Gas Processing (LNG GTL)


Howden products play an important role supporting the treatment and processing of gas into all saleable products whether natural gas, LNG or GTL

​LNG is a main energy source for power generation and transportation fuel.  Howden products support multiple processes within onshore and offshore (FLNG) production facilities.

In a gas processing plant, there may be multiple trains or production units processing a wide variety of gas feeds.  From the moment the gas enters the plant to exiting as a saleable product, compression is needed to transfer the gas through the process. 

Howden products are used extensively within gas treatment - boosting and recycling gas in acid gas removal, sulfur recovery and tail gas treatment units; providing air for combustion and cooling; regenerating dehydration systems; and processing refrigerants in cooling applications such as dew point control and NGL recovery. 

Power supply onsite is often provided by gas turbine generators.  Howden compressors enhance the efficiency of gas turbine generators by boosting fuel gas and cooling inlet air.  

Howden fans ensure buildings ventilation and aeration, combustion air, desulphurization, incineration and process cooling.


Comprehensive, Customized Services

Every Howden product is backed by an absolute commitment to lifetime support and service that covers all spare parts, troubleshooting, scheduled maintenance and emergency response. We are dedicated to maintaining your plant at peak performance and, above all, keeping it in continuous production.

Bespoke Packages

Every project has different specific needs and operating conditions. Our ability to deliver custom-design solutions is extremely valuable. Whether supplied as a stand-alone unit or a complete package, our products are designed to match the rigors of its environment, and engineered to offer continuous uninterrupted operations.

In-House Expertise

Howden engineering teams and field engineers have access to our 160 years of learning, meaning we can offer our expertise at every step of the process from product selection to ongoing support. Our world organisation provide local responsive support to end users and customers

Natural Gas brochure

The natural gas value chain relies on availability and safety. We are a single source for LNG production, processing, transport and storage technology.

  • Gas processing / Feed Gas Compressor

    Certain gas plants may not have the required pressure of gas entering the plant process units and so require a low pressure inlet system. Compressor used to increase the pressure of gas coming into the plant for liquefaction.

    • Screw compressors
  • Gas processing / Flash Gas compressor

    Also known as low pressure compressor. Used to recover gas flashed from the separators to the process (condensate removal unit).

    • Screw compressors
  • Gas processing / Off Gas

    Compressor used to recover the gas contained in the liquid (condensate) after the separation stage.

    • Screw compressors
  • NGL treatment / Overhead

    Compressor used to recover NGLs from the gas stream.  If using mechanical refrigeration method - refrigerant compressor. And recycling overhead from fractionation towers (deethaniser).

    • Oil injected screw compressors
  • Gas processing / Regeneration Gas

    Compressor used to recover NGLs from the gas stream. If using mechanical refrigeration method - refrigerant compressor and recycling overhead from fractionation towers (deethaniser).

    • Centrifugal compressors
  • Gas processing / CO2

    Also known as acid gas compressors. Used to process CO2 recovered from the treatment section and then potentially inject into storage points (e.g. underground) in order to reduce CO2 emissions. Howden supplies CO2 Boost oil injected screw compressors.

    • Oil injected screw compressors, Compressor Centrifugal
  • Gas processing / Liquefaction Pre-Cooling (OSMR)

    Refrigerant. Liquefaction Pre-Cooling (OSMR).

    • Screw compressors
  • Gas processing / SMR mixed refrigerant processes

    Mixed refrigeration system for smaller capacities use a range of compression technologies. Howden supplies oil injected screw compressors  for the mixed flow refrigerant unit.

    • Oil injected screw compressors
  • Gas processing / Helium plant

    Compressors are used to process the crude helium prior to liquefaction. Howden supplies oil-injected screw compressors.

    • Oil injected screw compressors
  • Liquefaction/C3 Refrigerant compressor

    Compressor used within the process the refrigerant gas circulated within the cooling system required to liquefy the gas into LNG.  Depending on the process used this could be processing propane (C3), ethylene, methane or a mixed refrigerant. On some processes ammonia pre-cooling can also be used.  Propylene may also be used as refrigerant for re-liquefaction.

    • Oil injected screw compressors, Centrifugal compressors
  • Liquefaction /End Flash Gas compressor

    Compress low pressure gas vapour after the liquefaction process and feed it to the fuel gas system or other processes (when vapours are from storage tanks, this is BOG).

    • Centrifugal compressors
  • Liquefaction/Boil off gas compressor

    Compressor used to recycle gas that is formed from the LNG held in storage tanks for use as fuel gas or reliquefaction back into LNG and storage (or to export pipeline).

    • Screw compressors
  • Process cooling

    Site utilities/Cooling ACHE Air Cooled Heat Exchanger. Process cooling.

    • Cooling fans
  • Desuphurisation Incineration fan

    Combustor & start up.

    • Centrifugal fan
  • Site utilities/Fuel Gas turbines

    Site utilities/Gas turbines are commonly used for power generation and drives within LNG facilities (typically under 50MW). Modern gas turbines (Heavy frame) generally operate at 35-42 bar g, while Aeroderivative turbines operate at 48-69 bar g. To reach these operational pressures the feed is often required to be boosted. Howden supplies oil free or oil injected screw compressors. Howden deliver also HP recip and centrifugal compressor solutions.

    • Oil injected screw compressors, Oil-free screw compressors, API618, Centrifugal Compressors
  • Site utilities/Turbine Inlet Cooling

    Site utilities/Turbine Inlet Cooling -  TIC refrigerant compressor. Howden provide API oil-injected screw compressors.

    • Oil injected screw compressors
  • If you would like to submit an enquiry please get in touch.