Naphtha To Gasoline Production Guide: Process Routes, Catalysts, Equipment And Plant Design

Naphtha to Gasoline Production Guide: Process Routes, Catalysts, Equipment and Plant Design

How is gasoline produced from naphtha? Which process should you choose? What reactors, heaters, heat exchangers, towers and separation equipment are required?

Producing gasoline from naphtha is not simply a matter of heating hydrocarbons and sending them through a reactor.

A commercial naphtha to gasoline production system is a coordinated combination of feed pretreatment, molecular conversion, heat integration, separation, stabilization and product blending. The correct process route depends heavily on the composition of the naphtha, the required gasoline octane number, sulfur specification, aromatic limits, gasoline yield, hydrogen availability, catalyst selection and project economics.

For refinery owners, EPC contractors and equipment buyers, the most important question is therefore not:

"Which reactor should we buy?"

It is:

"Which process configuration can convert our specific naphtha feed into the required gasoline pool with the best balance of octane, yield, energy consumption, equipment investment and long-term operating stability?"

This guide explains the major routes for naphtha gasoline production, the role of catalysts, the most important equipment, common engineering mistakes and how to evaluate a manufacturing partner before ordering the equipment.

1. What Does Naphtha to Gasoline Production Mean?

Naphtha is a broad hydrocarbon fraction rather than a single chemical.

Depending on its source, naphtha can contain different proportions of:

Normal paraffins

Isoparaffins

Naphthenes

Aromatics

Olefins

C5–C6 light hydrocarbons

C7+ hydrocarbons

Sulfur compounds

Nitrogen compounds

Trace contaminants

Water and other impurities

The gasoline value of these molecules is not the same.

Some components have relatively low octane numbers but can be upgraded through isomerization. Other components can be converted into higher-octane aromatics through catalytic reforming or aromatization.

This is why modern naphtha upgrading is better understood as molecular management rather than simple conversion.

2. The First Decision: What Kind of Naphtha Do You Have?

Before selecting a reactor, catalyst or equipment supplier, characterize the feedstock.

This is one of the most important lessons in naphtha to gasoline production.

Two naphtha streams with the same boiling range may require completely different processing strategies.

Key feedstock parameters

Buyer insight

A common procurement mistake is to ask a manufacturer:

"Can you manufacture a naphtha gasoline reactor?"

without providing the actual feed properties.

A serious equipment manufacturer should instead ask for the process basis first.

If a supplier can quote a major reactor package without understanding the feed composition, operating pressure, temperature, catalyst, flow rate and process duty, the buyer should be cautious.

3. Three Major Routes for Producing Gasoline from Naphtha

There is no universal "best" naphtha-to-gasoline technology.

The major upgrading approaches include:

C5/C6 isomerization

Catalytic reforming

Naphtha aromatization or hydrogen-free upgrading

These routes can also be combined.

The best configuration depends on the molecule distribution in the feedstock.

4. Route One: C5/C6 Naphtha Isomerization

Isomerization is one of the most important technologies for upgrading light naphtha.

The basic reaction converts normal paraffins into branched-chain isomers.

For example, n-pentane can be converted into isopentane, while normal C6 paraffins can be rearranged into branched C6 isomers.

The objective is not necessarily to increase the carbon number.

Instead, the molecular structure is changed to obtain a higher-octane gasoline component.

Why Isomerization Matters

A refinery may have a large quantity of light naphtha that has relatively limited value as a direct gasoline blend component.

Isomerization can upgrade these molecules while avoiding the same type of aromatic increase associated with some other octane-enhancement routes.

This makes C5/C6 isomerization particularly interesting when the refinery needs:

Higher gasoline octane

Low-aromatic gasoline components

Better utilization of light naphtha

High gasoline yield

Reduced dependence on traditional octane boosters

5. Low-Temperature Isomerization

Low-temperature isomerization commonly uses platinum/chlorinated-alumina-type catalysts.

GYRO's current gasoline catalyst information identifies Pt/Cl-Al₂O₃ as one of the low-temperature isomerization catalyst systems, with typical process conditions and strict feed pretreatment requirements. The catalyst is particularly sensitive to water and sulfur, making upstream purification an important part of the overall process design.

The process normally requires close control of:

Feed drying

Desulfurization

Denitrification

Hydrogen circulation

Reaction temperature

Reaction pressure

Catalyst environment

Chlorine management where applicable

The advantage of low-temperature isomerization is strong catalyst activity and favorable equilibrium performance.

However, the catalyst can be highly sensitive to contaminants such as water and sulfur.

Engineering consequence

The buyer is not only purchasing an isomerization reactor.

The buyer is purchasing a complete operating environment for the catalyst.

That can include:

Feed pretreatment

Drying

Desulfurization

Hydrogen circulation

Reactor system

Heat exchangers

Separation equipment

Stabilization

Corrosion control

Catalyst management

Therefore, equipment design cannot be separated from catalyst requirements.

6. Medium-Temperature Isomerization

Medium-temperature isomerization commonly uses platinum-loaded molecular-sieve catalysts.

GYRO's published catalyst information describes Pt-loaded acidic molecular-sieve systems, including zeolite, mordenite and beta-zeolite catalyst families. Compared with chlorine-alumina systems, these catalysts can offer higher feed tolerance and eliminate continuous chlorine supplementation.

Typical considerations include:

Higher reaction temperature

Lower catalyst sensitivity to certain contaminants

Simpler operation

Good process stability

Potential recycling of unconverted normal paraffins

A typical configuration can therefore include a fractionation or recycle section.

The recycle loop is important because the reactor does not need to convert every molecule in one pass.

Instead, the process can use molecular recycle to increase overall conversion.

This creates another equipment requirement: the fractionation and recycle system must be designed together with the reactor.

 

 

7. Route Two: Catalytic Reforming

Catalytic reforming is fundamentally different from isomerization.

Instead of mainly rearranging C5/C6 paraffins, reforming upgrades heavier naphtha through reactions such as:

Dehydrogenation

Isomerization

Dehydrocyclization

Hydrogen transfer

The result can include:

High-octane reformate

Aromatic hydrocarbons

Hydrogen-rich gas

Catalytic reforming is particularly relevant when the feed contains sufficient C6+ reformable hydrocarbons and the refinery wants to produce a high-octane reformate.

However, reforming also introduces a major engineering requirement: thermal management.

Many reforming reactions are strongly endothermic, so temperature falls through the reactor system must be managed.

This is why the fired heater and heat exchanger system can be just as important as the reactor itself.

8. Why the Heater Matters More Than Many Buyers Expect

When people search for a "naphtha gasoline reactor," they often focus almost entirely on reactor specifications.

That is a mistake.

For an endothermic upgrading process, the heater affects:

Reaction temperature

Temperature profile

Catalyst performance

Conversion

Energy consumption

Tube-metal temperature

Furnace reliability

Operating safety

A poorly designed heating system can create hot spots, unstable operation or excessive energy consumption even when the reactor itself is correctly designed.

For this reason, a complete project may require a combination of:

 Fired Heater

Chemical Reactor

Heat Exchanger

and downstream separation equipment.

GYRO's current product scope includes fired heaters, chemical reactors and heat exchangers for chemical and petrochemical applications.

9. Route Three: Naphtha Aromatization

Aromatization provides another route for converting suitable naphtha into higher-octane gasoline components.

The chemistry can involve combinations of:

Dehydrogenation

Cyclization

Hydrogen transfer

Isomerization

Controlled cracking

Aromatization can be attractive for feedstocks where the project objective includes:

Increasing gasoline octane

Producing aromatic-rich products

Utilizing low-aromatic-potential naphtha

Processing alternative light hydrocarbon streams

Producing hydrogen-rich fuel gas in certain process configurations

GYRO's published catalyst information identifies naphtha, reformer raffinate, straight-run gasoline, coker gasoline and other hydrocarbon feeds as potential aromatization feedstocks. It also distinguishes non-hydrogen-rich Zn/Ga-ZSM-5 aromatization systems from conventional hydrogen-rich catalytic reforming.

This distinction is important because catalytic reforming and hydrogen-free aromatization are not interchangeable technologies.

10. Hydrogen-Free Naphtha Upgrading: An Important Alternative

One area that deserves more attention from project developers is hydrogen-free naphtha upgrading.

GYRO's catalyst technology portfolio includes hydrogen-free isomerization systems based on modified molecular sieves and other catalyst families, with process conditions selected according to feedstock and product objectives.

Possible catalyst families include:

Zn-modified ZSM-5

Ga-modified ZSM-5

Ni-modified ZSM-5

Modified mordenite

Solid superacid systems

Shape-selective molecular sieves

The underlying concept is to increase gasoline octane through combinations of:

Isomerization

Aromatization

Mild cracking

Hydrogen transfer

Molecular restructuring

This route can be particularly interesting where hydrogen availability is limited or where the owner wants to evaluate alternatives to conventional hydrogen-based upgrading.

But there is an important warning:

Hydrogen-free does not mean equipment-free.

The process may still require substantial thermal management, catalyst regeneration, separation and product recovery systems.

11. Catalyst Selection Is a Process Decision, Not a Chemical Purchase

The catalyst determines much of the process behavior.

But selecting a catalyst only according to its advertised activity is not enough.

A buyer should evaluate at least five parameters.

1. Activity

How much conversion can be achieved under the intended conditions?

2. Selectivity

Where do the converted molecules go?

High conversion with excessive cracking may not be economically attractive.

3. Stability

How rapidly does the catalyst deactivate?

4. Regeneration

How frequently must the catalyst be regenerated, and what regeneration system is required?

5. Feed Tolerance

How sensitive is the catalyst to:

Sulfur?

Water?

Nitrogen?

Metals?

Olefins?

Heavy compounds?

The best catalyst is therefore not necessarily the catalyst with the highest initial activity.

It is the catalyst that produces the best lifetime economics under the actual feed conditions.

12. Why Feed Pretreatment Can Determine the Success of the Whole Plant

Catalyst protection begins upstream.

For many catalytic naphtha upgrading routes, sulfur and other contaminants can reduce catalyst activity.

Therefore, feed purification should be treated as an integral part of the process rather than an auxiliary package.

For sensitive catalysts, the buyer may need to consider:

Hydrotreating

Desulfurization

Denitrification

Drying

Water removal

Filtration

Feed stabilization

If the buyer only specifies the reactor and leaves feed purification to a later engineering stage, the project may experience:

Catalyst deactivation

Shorter cycle length

Lower conversion

Product quality instability

Higher catalyst consumption

Unexpected operating costs

This is one of the strongest arguments for selecting an equipment manufacturer that understands process-unit interfaces rather than simply fabricating vessels from drawings.

13. The Core Equipment in a Naphtha Gasoline Production Plant

A complete naphtha-to-gasoline project can involve many equipment categories.

13.1 Feed Treatment Equipment

Depending on the feed and process:

Feed surge vessels

Hydroprocessing reactors

Separators

Filters

Drying systems

Heat exchangers

Pumps

Compressors

13.2 Reaction Equipment

The reaction section can contain:

 Chemical Reactor

Potential applications include:

Naphtha isomerization

Hydrogenation

Hydrotreating

Aromatization

Other catalytic upgrading reactions

The reactor mechanical design should consider:

Design pressure

Design temperature

Operating pressure

Operating temperature

Catalyst loading

Catalyst support

Gas/liquid distribution

Internal structures

Hydrogen service

Corrosion allowance

Material compatibility

Welding requirements

Inspection requirements

GYRO states that it designs and manufactures medium- and high-pressure reaction vessels, chemical reactors and customized reaction vessels.

14. Reactor Internals Are Critical

A reactor is not just a pressure shell.

The internal structure can directly affect catalyst performance.

Depending on the process, the reactor may require:

Feed distributors

Gas distribution systems

Catalyst support grids

Hold-down systems

Thermowells

Internal screens

Collector systems

Regeneration gas distribution

Inlet diffusers

Poor flow distribution can create:

Channeling

Hot spots

Uneven catalyst utilization

Localized deactivation

Poor conversion

Excessive pressure drop

Therefore, when comparing two reactor suppliers, do not compare only:

diameter × length × wall thickness × price

Ask what engineering has been done inside the vessel.

15. Heat Exchangers: The Hidden Energy-Efficiency Lever

Naphtha upgrading involves multiple hot and cold streams.

The opportunity for heat recovery can therefore be substantial.

 Heat Exchanger

Potential applications include:

Feed/effluent heat recovery

Product cooling

Feed preheating

Condensation

Reboiling

Waste heat recovery

Hydrogen-rich gas cooling

Process thermal integration

A well-designed heat exchanger network can reduce furnace duty and improve overall energy efficiency.

This is why a supplier capable of manufacturing both reactors and heat exchangers can contribute more value than a supplier that only fabricates one pressure vessel.

GYRO's official product scope includes shell-and-tube heat exchangers, process heat exchangers and customized heat-transfer equipment.

16. Separation and Fractionation: Where Product Quality Is Finalized

After reaction, the product stream is usually not yet finished gasoline.

It can contain:

Unconverted hydrocarbons

Light gases

Hydrogen

LPG-range components

Water

Gasoline-range hydrocarbons

Heavier hydrocarbons

Separation equipment determines how these molecules are recovered.

Typical equipment can include:

Stabilizers

Fractionation columns

Debutanizers

Deisopentanizers

Deisobutanizers

Depentanizers

Product separators

Condensers

Reboilers

Chemical Tower

becomes particularly important here.

A separation tower that is mechanically well fabricated but poorly matched to the actual process can create:

Excessive pressure drop

Poor separation

High reflux demand

High reboiler duty

Product contamination

Reduced throughput

Therefore, tower design must begin with process data.

GYRO's tower manufacturing scope includes distillation columns, absorption towers, scrubbing towers and customized process towers.

17. Product Stabilization Matters for Gasoline Quality

A gasoline product stream normally needs controlled removal of light components.

The design objective is not simply "maximum separation."

The real objective is to achieve the required product specification while controlling:

Vapor pressure

Gasoline recovery

Energy consumption

Light-end loss

Column pressure

Reflux ratio

This is another reason why process simulation and equipment design need to work together.

18. A Major Engineering Insight: Optimize Molecules Before Optimizing Equipment

One of the most important lessons in naphtha gasoline production is:

Do not start with equipment. Start with molecules.

Consider three feedstocks.

Feed A

High C5/C6 normal paraffin content.

A C5/C6 isomerization route may be attractive.

Feed B

Heavy naphtha rich in reformable components.

Catalytic reforming may provide a stronger value proposition.

Feed C

Low-aromatic-potential naphtha with a requirement for high-octane gasoline.

Alternative aromatization or hydrogen-free upgrading may deserve evaluation.

The equipment list changes because the process route changes.

Therefore, process development should follow this sequence:

Feed Composition → Molecular Distribution → Process Route → Catalyst → Reaction Conditions → Heat Integration → Separation Scheme → Equipment Specification → Manufacturing

not:

"Customer asks for reactor → manufacturer builds reactor → engineer tries to make process work."

19. How Operating Conditions Influence Equipment Design

The equipment specification should reflect actual operating conditions.

Important variables include:

Temperature

Higher temperatures can increase reaction rates but may also accelerate:

Coke formation

Catalyst deactivation

Material degradation

Energy consumption

Pressure

Pressure affects:

Reaction equilibrium

Hydrogen partial pressure

Gas density

Compressor requirements

Vessel wall thickness

Mechanical design

LHSV / WHSV

Space velocity influences:

Reactor volume

Conversion

Catalyst loading

Throughput

Hydrogen-to-Hydrocarbon Ratio

For hydrogen-assisted processes, this affects:

Catalyst stability

Reaction environment

Compressor duty

Gas circulation

Residence Time

Too little residence time may reduce conversion.

Too much residence time can increase unwanted reactions.

Therefore, reactor sizing is an optimization problem rather than a simple volume calculation.

20. Why Material Selection Cannot Be an Afterthought

A naphtha upgrading plant may involve:

Hydrogen

Sulfur compounds

High temperature

Hydrocarbon mixtures

Acidic catalyst environments

Chloride-containing systems

Regeneration gases

Corrosive contaminants

Material selection should therefore consider the complete process environment.

The buyer should ask the equipment supplier to confirm:

Material grade

Design temperature

Design pressure

Corrosion allowance

Weldability

PWHT requirements where applicable

Cladding or lining requirements

Internal material selection

Inspection requirements

NDT requirements

The cheapest material specification is not necessarily the lowest-cost solution over the equipment lifecycle.

21. Welding and NDT Can Directly Affect Project Risk

For pressure equipment, manufacturing quality is part of process reliability.

Important fabrication activities can include:

Material receiving inspection

Material identification

Cutting

Forming

Welding preparation

Welding

Heat treatment where required

Dimensional inspection

NDT

Pressure testing

Internal inspection

Surface treatment

Final inspection

Documentation

Packing and transportation

GYRO's current manufacturing capability includes 14 certified welders covering 36 qualified welding items and four qualified NDT personnel covering 13 RT, UT, MT and PT inspection items.

For an international buyer, this matters because manufacturing quality should be demonstrated through documentation and inspection records rather than marketing language.

22. How GYRO Approaches Naphtha Gasoline Production Equipment

GYRO's role should not be viewed simply as:

"A factory that makes pressure vessels."

Its stronger value proposition is the integration of:

Process understanding + equipment engineering + fabrication + inspection + project coordination.

GYRO has an established manufacturing base and engineering team, with more than 150 manufacturing and processing equipment units and annual designed production capacity exceeding 8,000 tons.

The company holds an A2-level Pressure Vessel Design and Manufacturing License and manufactures customized pressure vessels, reactors, towers and heat-transfer equipment.

For a naphtha gasoline project, this allows equipment requirements to be considered as an interconnected system rather than as isolated pressure vessels.

23. What GYRO Can Manufacture for a Naphtha-to-Gasoline Project

Depending on the selected process, the equipment scope may include:

Reaction Section

Chemical Reactor

For:

Isomerization

Hydrogenation

Hydrotreating

Aromatization

Other catalytic upgrading services

Heating Section

 Fired Heater

For:

Feed heating

Reaction temperature control

Interstage heating

High-temperature process services

Heat Recovery

Heat Exchanger

For:

Feed/effluent heat exchange

Cooling

Condensation

Waste heat recovery

Process heat integration

Separation

 Chemical Tower

For:

Fractionation

Stabilization

Light-end separation

Product recovery

Customized distillation services

This equipment integration is especially relevant for EPC contractors that want to reduce the number of independent equipment interfaces.

24. Why Equipment Interface Management Is So Important

Imagine purchasing:

Reactor from Supplier A

Heater from Supplier B

Heat exchanger from Supplier C

Tower from Supplier D

Each supplier may manufacture excellent equipment.

But the interfaces can still create problems.

For example:

Reactor outlet temperature does not match exchanger duty.

Nozzle orientation conflicts with piping.

Equipment support dimensions differ from the plot plan.

Design pressure classes are inconsistent.

Maintenance clearance is insufficient.

Instrument connections are positioned incorrectly.

Shipping dimensions are incompatible with site access.

Vendor drawings are delayed.

These problems are expensive because they usually appear during engineering or construction rather than during initial procurement.

A coordinated equipment manufacturer can reduce these interface risks.

GYRO's current company profile emphasizes project-oriented equipment solutions and coordination among engineering, production, quality and commercial departments for large or customized equipment.

25. Common Naphtha Gasoline Production Problems

Problem 1: Low Gasoline Octane

Possible causes include:

Incorrect feed routing

Insufficient conversion

Catalyst deactivation

Incorrect operating conditions

Poor fractionation

Excessive low-octane components in the final blend

Solution

Start with molecular composition rather than immediately increasing reactor temperature.

Problem 2: Excessive Dry Gas

Possible causes:

Excessive cracking

Over-severe operating conditions

Unsuitable catalyst

Excessive reaction temperature

Poor feed distribution

Solution

Optimize selectivity, not only conversion.

A process producing more conversion but losing valuable carbon to gas may have worse economics.

Problem 3: Rapid Catalyst Deactivation

Possible causes:

Sulfur

Water

Nitrogen

Coke

Heavy contaminants

Incorrect regeneration

Solution

Investigate the complete catalyst environment.

Problem 4: High Energy Consumption

Possible causes:

Poor heat integration

Excessive furnace duty

Inefficient heat exchangers

High reflux

Poor separation strategy

Unnecessary recycle

Solution

Review the entire energy network instead of focusing only on the fired heater.

Problem 5: Product Specification Instability

Possible causes:

Feed composition variation

Reactor temperature fluctuation

Catalyst aging

Separation instability

Inadequate process control

Solution

Design sufficient operating flexibility into the equipment and control system.

26. How to Choose the Right Naphtha-to-Gasoline Process

Use the following decision framework.

This table should not be interpreted as a universal technology-selection rule.

Actual selection requires feed analysis and product specifications.

27. What Information Should You Send a Manufacturer for a Quote?

If you are requesting a quotation for a naphtha to gasoline production plant or equipment package, provide as much of the following information as possible.

Feed Data

Feed name

Flow rate

Density

Composition

C5/C6/C7/C8+ distribution

Sulfur

Nitrogen

Water

Olefins

Aromatics

Boiling range

Product Requirements

Gasoline capacity

Target RON

MON if applicable

Sulfur specification

Aromatic limit

Benzene requirement

Vapor pressure

Gasoline yield target

Reaction Conditions

Operating temperature

Design temperature

Operating pressure

Design pressure

LHSV/WHSV

Hydrogen/hydrocarbon ratio

Catalyst type

Catalyst loading

Regeneration requirements

Equipment Data

Equipment list

Vessel dimensions

Design code

Material specification

Corrosion allowance

Nozzle requirements

Insulation requirements

Internal components

NDT requirements

Pressure-test requirements

Project Data

New plant or retrofit

Site location

Transportation limits

Installation conditions

Delivery schedule

Inspection requirements

Documentation requirements

Third-party inspection requirements

The more complete the process information, the more meaningful the quotation will be.

28. Naphtha Gasoline Production Equipment RFQ Checklist

Before sending an RFQ, the buyer should check:

Process

Feed composition available

Product specification defined

Target gasoline RON defined

Capacity defined

Catalyst selected or process route identified

Operating conditions available

Reactor

Design pressure

Design temperature

Catalyst loading

Internals

Distributor

Support grid

Material specification

NDT requirements

Heater

Duty

Fuel type

Outlet temperature

Tube material

Burner requirements

Emission requirements

Heat Exchanger

Hot-side flow

Cold-side flow

Inlet/outlet temperature

Pressure drop

Design pressure

Materials

Tower

Diameter

Height

Number of stages

Tray or packing type

Reflux

Reboiler duty

Condenser duty

Design pressure

29. The Difference Between a Low-Cost Supplier and a Low-Lifecycle-Cost Supplier

Equipment price is only one part of the project economics.

Consider:

CAPEX + Energy Consumption + Catalyst Consumption + Maintenance + Downtime + Product Loss + Replacement Cost + Modification Cost = Lifecycle Cost

A reactor that costs less initially but creates higher pressure drop, poorer heat integration or more difficult maintenance may become more expensive over several years.

For refinery and petrochemical projects, the correct procurement question is therefore:

"What is the lowest total lifecycle cost that can reliably meet my process specification?"

not:

"Which supplier has the lowest quotation?"

30. Five Questions to Ask Every Naphtha Gasoline Equipment Manufacturer

Before signing a purchase order, ask:

Question 1

Have you manufactured equipment for comparable hydrocarbon or petrochemical services?

Question 2

Can you design the equipment based on actual process conditions rather than only a generic drawing?

Question 3

How do you control welding quality and NDT?

Question 4

Can you coordinate interfaces between reactors, heaters, heat exchangers and towers?

Question 5

Can you support engineering changes, installation and technical issues after delivery?

These questions often reveal more than comparing product prices.

31. Why Choose GYRO for Naphtha Gasoline Production Equipment?

Choosing an equipment manufacturer for a naphtha upgrading project is different from buying a standard industrial vessel.

You need a manufacturer that understands that the equipment will eventually become part of a process unit.

GYRO combines engineering and manufacturing capabilities for petrochemical equipment, including:

Pressure vessels

Chemical reactors

Process towers

Heat exchangers

Fired heaters

Customized non-standard equipment

GYRO operates a 30,000 m² facility with a 20,000 m² workshop and has more than 150 manufacturing and processing equipment units. Its designed annual production capacity exceeds 8,000 tons.

GYRO also holds an A2-level Pressure Vessel Design and Manufacturing License.

More importantly for project buyers, GYRO approaches equipment manufacturing from the perspective of actual process conditions, equipment interfaces and project delivery rather than treating every vessel as an isolated fabrication order.

For naphtha gasoline projects, this can be valuable when the scope includes multiple connected equipment packages.

32. GYRO's Manufacturing Workflow for Naphtha Process Equipment

A typical project workflow includes:

Customer process data review

Technical review

Equipment specification

Mechanical design

Material procurement

Fabrication

Welding and NDT

Dimensional inspection

Pressure or functional testing

Final inspection

Documentation

Packing and delivery

Installation or technical support where required

For custom equipment, the earlier engineering decisions are made correctly, the less likely expensive changes become later.

GYRO's official company information states that its engineers can work from customer drawings, equipment specifications, process data, technical datasheets, project requirements, existing equipment information and customized design requirements.

33. New Plant vs Existing Refinery Retrofit

The procurement strategy should also change depending on the project type.

New Plant

A greenfield project gives more flexibility to optimize:

Equipment arrangement

Heat integration

Pipe routing

Reactor configuration

Tower dimensions

Maintenance access

Future expansion

Existing Plant Retrofit

A retrofit is usually more difficult.

You may have to work within:

Existing foundations

Existing piping

Existing equipment

Limited plot space

Existing utilities

Existing electrical systems

Existing control systems

Shutdown windows

For retrofit projects, equipment dimensions and nozzle orientation can become as important as process performance.

This is where customized manufacturing can provide a major advantage.

34. A Better Way to Think About Naphtha-to-Gasoline Projects

The strongest projects do not optimize one piece of equipment.

They optimize the complete chain:

Feed → Pretreatment → Molecular Conversion → Heat Integration → Separation → Product Recovery → Blending

A small improvement in one section can create a large effect elsewhere.

For example, better feed pretreatment can improve catalyst life and reactor stability, while better heat integration can reduce furnace duty and operating cost.

This systems-level perspective should guide equipment procurement.

35. Frequently Asked Questions About Naphtha to Gasoline Production

What is the main process for producing gasoline from naphtha?

There is no single universal process. Depending on feed composition and product requirements, the project may use C5/C6 isomerization, catalytic reforming, aromatization or combinations of these technologies.

Can light naphtha be converted into high-octane gasoline?

Yes. C5/C6 isomerization is one important route for increasing the octane value of suitable light naphtha while maintaining high liquid yield.

Can heavy naphtha be used for gasoline production?

Yes. Heavy naphtha can be processed through catalytic reforming or other upgrading routes depending on its composition and the required product specification.

Is hydrogen required?

Not necessarily. Some conventional naphtha upgrading routes use hydrogen, while certain hydrogen-free isomerization and aromatization technologies operate without added hydrogen.

What equipment is needed?

A complete plant can require reactors, fired heaters, heat exchangers, separators, fractionation columns, stabilizers and other auxiliary equipment.

Why is feed analysis important?

Because naphtha composition determines which molecules need to be converted and therefore which catalyst and process route are economically appropriate.

Can GYRO manufacture custom naphtha process equipment?

Yes. GYRO manufactures customized reactors, pressure vessels, process towers, heat exchangers, fired heaters and other petrochemical equipment according to project specifications and process requirements.

Can GYRO support EPC projects?

GYRO provides engineering and equipment solutions for refining, petrochemical, coal chemical and chemical projects, including equipment configuration, manufacturing, auxiliary integration and technical support.