Your Professional Gas Compressor Manufacturer in China
Over 30 years of research and development, Comair has developed a wide range of gas compressors for different discharging pressures, flow rates and gas media, including centrifugal gas compressors, diaphragm compressors, piston gas compressors, and oil-free screw gas compressors.
Comair gas compressors are designed strictly in accordance with API618, ISO class-zero standard, ISO 9001:2015. It is tested and constructed to be of strictest safety standards and highest purity level without any contamination to the gas to be compressed.
Industry best warranty has been offered. 100% of Comair gas compressors are under warranty for 12 months from start-up or 18 months from shipment. Moreover, an extended warranty could be further offered for any Comair compressors using 100% Comair parts for maintenance.
Types of Gas Compressors
For LNG, natural gas processing, marine LNG, fertilizer, Downstream / Refinery, Power Generation
For onshore or offshore LNG duty, efficiently handling methane / biomethane and LNG
For industrial, gas transportation and gas storage processes. Compressing CNG to CO2 with pressures up to 350 bar.
For compressing your precious gases with highest purity level and zero leakage.
Gas Compressors By Different Gas Media
For CNG mother station & daughter station of various flow rates & inlet pressures.
For natural gas collection, transportation and storage; oil gas well injection and lift.
Hydrogen production & refueling, meeting major international & local safety codes.
Zero leakage & 100% purity for your helium compressing and collection.
Corrosion proofing solution for safety compressing, and collecting clean energy.
Highest safety level with zero leakage, your reliable efficient solution.
Your power heart, providing high energy efficiency and ultra low temperature operation.
Lifecycle Services for Your Gas Compressors
During the whole running lifecycle, timely and professional services are always ready for Comair gas compressors.
On arriving, free guidance on gas compressor installation and debugging will be provided; annual operation & maintenance training will be offered to your operating engineers; lifecycle maintenance and trouble shooting on your gas compressors is guaranteed; sufficient common spares will be stored and provided fastest by DHL; regular door-to-door visits or online video visits will be made for your gas compressor inspection services.
Customized Turnkey Gas Compressor Solution
We begin with analysis of your needs, working environment, concerns or expectations, ensuring best possible outcome on cost, quality and performance; Customized gas compressor and accessories will be designed only for your project and a delegated team will be responsible for successful delivery; on-site commissioning and training will be made with focus on each client actual needs; 24/7 after sales services are provided with full set of technical clarification video.
Covering All Your Compressed Gas Needs
As a professional and experienced gas compressor manufacturer, we can cover a wide range of gases and gas mixtures. Under your request, we can also customize our gas compressors to meet your specific project or factory requirements.
Some common gases handled by our gas compressor are listed below:
Compressed Natural Gas (CNG), CO/CO2, Nitrogen, Methane, Hydrogen, Argon, Helium and other noble gases.
The gas compressor is a quite complicated machine. It is a specially designed solution and its price varies.
We shall firstly decide which type of gas compressors shall be the ideal choice based on client’s requirements. Centrifugal gas compressor is suitable for large flow rate @ low or medium working pressure; Piston compressor with quite low initial investment has a very large range of working pressures and flow rates; diaphragm compressor is a good choice for noble gases and poisonous gases because of its high air tightness; oil free screw gas compressor couldn’t discharge a very high working pressure and very large flow rate, because of its working philosophy.
We shall design a gas compressor based on clients’ project details case by case. Information like inlet pressure, discharging pressure, flow rate, driven method, cooling methods, working condition etc will all influence a gas compressor design and its final price.
Other requirements including explosion proof, pipe materials requirements, core parts brands will also have an influence on the gas compressor final price.
Just leave your project information to us. We will design a tailored gas compressor solution specifically for your project.
Gas compressor working process is similar to normal air compressor. However, it is more complicated because most gases have a more active chemical property and are easier to have chemical reactions with other substances. So gas compressors internal structures are built to prevent such reactions and leakage.
Let’s detailly check the compression process for a special gas, Methylene Dichloride. Its compression process is quite complicated but its liquid form is a very important organic solvent, widely used in paint removal & coating, pharmaceuticals, metal cleaning & degreasing etc.
Low pressure methylene dichloride vapor will be sucked into the air end after it flows through the inlet filter. Inside the air end, its pressure increases as the screw rotor and star wheels run. Also increased is its temperature. With the water injected, it not only cools down the mixture temperature, but also acts as sealing material and lubricating material. When the gas pressure reaches the designed discharging pressure, it will be discharged and flow to the gas water separator where most cooling water will be separated and relatively dry gas will flow to the next precooler. If some methylene dichloride is still in the gas form, it will be further collected and sent to the air end for compression; but most methylene dichloride will flow to the condenser where it will be condensed into liquid form. Finally, the liquid methylene dichloride will be collected and stored.
Comair gas compressors could be driven by diesel engine, electric motor, gas combustion engine.
Electric motor: most of our compressors are driven by electric motors of highest protection grade and energy efficiency. The electric motor used to power our gas compressors are usually of IP55 protection grade and IE4 96% energy efficiency. Electric motor is much more energy efficient than diesel engine or gas combustion engine. In areas where electricity supply is sufficient, we shall firstly consider electric motor driven gas compressors.
Diesel engine: diesel engine could be chosen where there is limited electricity supply on the project site. However, its running cost could be much higher because the thermal efficiency of even the most advanced diesel engine could just be around 50%-55%, far lower than the electric motor efficiency.
Gas engine: Gas Engine or we can also call it Natural Gas Engine. For natural gas enriching countries, especially those African countries where there is limited access to electricity, gas engine driven compressor is a preferred choice. Comair has already supplied many natural gas engine driven gas compressors to the Nigeria market.
Piston gas compressor uses pistons to compress the gas. The compressing chamber made by cylinder internal wall,cylinder cover and piston top side changes periodically when the piston reciprocating moves happen. The air inlet, air compressing and air discharging make a complete working cycle, which happens due to the piston reciprocating move.
Boil-off gas compressor is named by its special application. Let’s take natural gas as the example.
For long distance transportation, natural gas as cryogenic liquid is stored in the tank at the temperature of -165℃ or below. However, even slightest temperature rise will lead to natural evaporation of the natural gas, which is called boil-off gas. The compressor used to collect and compress this boil-off gas is called boil-off gas compressor. The compressed boil-off gas is either stored in cylinders again or used as fuel for engines.
Flash gas compressor is used to compress and collect flash gas. Flash gas is produced when the pressure of their liquid mixture undergoes heating or depressurization. This often happens in oil & gas extraction activities but flash gas poses potential risks to staffs health or neighbouring residents. Moreover, those hydrocarbon flash gas will contribute heavily to the greenhouse effects if released into the atmosphere.
