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Natural Gas Compressor for Oil Fields/ Refineries/ Chemical Plants

Coalbed methane compressors are mainly devices with water-injected screw compressors as the air end, which are used in coal mine gas recovery, natural gas secondary recovery, oil fields, refineries, natural gas chemical plants, vinylon plants, chemical fiber plants, and other petrochemical enterprises, as well as combustible gas recycling at liquefied gas stations and strategic combat readiness oil depots. This natural gas compressor product can not only recycle energy but also significantly reduce environmental pollution. It has reliable quality, good cost performance, and is highly competitive in the domestic market.

Category: Special Gas Compressor

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Additional information

Coalbed methane compressors are mainly devices with water-injected screw compressors as the air end, which are used in coal mine gas recovery, natural gas secondary recovery, oil fields, refineries, natural gas chemical plants, vinylon plants, chemical fiber plants, and other petrochemical enterprises, as well as combustible gas recycling at liquefied gas stations and strategic combat readiness oil depots.

This natural gas compressor product can not only recycle energy but also significantly reduce environmental pollution. It has reliable quality, good cost performance, and is highly competitive in the domestic market. So far, coalbed methane recovery devices have been promoted and applied in petrochemical enterprises such as oil fields, refineries, natural gas chemical plants, vinylon plants, and chemical fiber plants. As a natural gas compressor manufacturer, EPG-CMN provides excellent compressors that effectively reduce pollution.

Natural Gas Compressor

Natural Gas Compressor Technical Parameters

Model	Working Pressure		Flow Rate		Power		Noise	Weight	Overall Dimension
	MPa	Psi	m³/min	cfm	kW	HP	dB(A)	kg	LWH
	MPa	Psi	m³/min	cfm	kW	HP	dB(A)	kg	mm
CM08PVF	0.8	116	0.45-1.15	16-41	7.5	10	58	630	1550×775×1445
CM08PVF	1	145	0.41-1.02	14-36	7.5	10	58	500	1350×774×1150
CM11PVF	0.8	116	0.62-1.55	22-55	11	15	58	650	1550×775×1445
	1	145	0.53-1.32	19-47				520	1350×774×1150
	1.25	181	0.48-1.02	17-36				520	1350×774×1150
CM15PVF	0.8	116	0.96-2.40	34-85	15	20	63	900	1900×1000×1635
	1	145	0.85-2.12	30-75				900	1900×1000×1635
	1	145	0.85-2.12	30-75				750	1680×1000×1335
	1.25	181	0.64-1.61	23-57				750	1680×1000×1335
CM18PVF	0.8	116	1.24-3.10	44-109	18.5	25	65	970	1900×1000×1635
	1	145	1.05-2.62	37-93				970	1900×1000×1635
	1	145	1.05-2.62	37-93				820	1680×1000×1335
	1.25	181	0.85-2.13	30-75				820	1680×1000×1335
CM22PVF	0.8	116	1.40-3.50	49-124	22	30	65	1000	1900×1000×1635
	1	145	1.25-3.13	44-111				1000	1900×1000×1635
	1	145	1.25-3.13	44-111				850	1680×1000×1335
	1.25	181	1.04-2.61	37-92				850	1680×1000×1335
CM30PVF	0.8	116	2.00-5.00	71-177	30	40	66	1150	1950×1050×1780
	1	145	1.68-4.20	59-148				1150	1950×1050×1780
	1	145	1.68-4.20	59-148				1080	1900×1050×1430
	1.25	181	1.52-3.18	54-112				1080	1900×1050×1430
CM37PVF	0.8	116	2.44-6.10	86-215	37	50	67	1170	1950×1050×1780
	1	145	2.09-5.22	74-184				1170	1950×1050×1780
	1	145	2.09-5.22	74-184				1100	1900×1050×1430
	1.25	181	1.92-4.81	68-170				1100	1900×1050×1430
CM45PVF	0.8	116	3.12-7.80	110-275	45	60	68	1930	3040×1280×1800
	1	145	2.45-6.13	87-216				1930	3040×1280×1800
	1	145	2.45-6.13	87-216				1430	1880×1260×1430
	1.25	181	2.26-5.65	80-200				1430	1880×1260×1430
CM55PVF	0.8	116	3.84-9.60	136-339	55	75	70	2050	3040×1280×1800
	1	145	3.44-8.60	121-304				2050	3040×1280×1800
	1	145	3.44-8.60	121-304				1550	1880×1260×1430
	1.25	181	2.97-7.42	105-262				1550	1880×1260×1430
CM75PVF	0.8	116	5.16-12.90	182-455	75	100	73	2450	3040×1280×1800
	1	145	4.57-11.42	161-403				2450	3040×1280×1800
	1	145	4.57-11.42	161-403				1790	1880×1260×1430
	1.25	181	3.93-9.83	139-347				1790	1880×1260×1430
CM90PVF	0.8	116	6.52-16.30	230-576	90	125	73	2160	2500×1400×1580
	1	145	5.81-14.52	205-513				2160
	1.25	181	4.92-12.30	174-434				2160
CM110PV	0.8	116	7.76-19.40	274-685	110	150	78	2270	2500×1400×1580
	1	145	6.76-16.90	239-597
	1.25	181	6.04-15.10	213-533
CM132PV	0.8	116	8.88-22.21	314-784	132	180	78	2350	2500×1400×1580
	1	145	8.15-20.38	288-720
	1.25	181	7.31-18.29	258-646
CM160PV	0.8	116	11.54-28.85	407-1019	160	220	78	3720	3100×1700×2090
	1	145	9.81-24.52	346-866
	1.25	181	8.87-22.17	313-783
CM200PV	0.8	116	14.65-36.63	517-1293	200	270	78	3750	3100×1700×2090
	1	145	13.10-32.70	463-1155
	1.25	181	11.09-27.72	392-979
CM250PV	0.8	116	17.15-42.88	606-1514	250	340	78	3900	3100×1700×2090
	1	145	15.60-39.00	551-1377
	1.25	181	13.87-34.64	490-1223
CM320PV	0.8	116	23.64-59.10	835-2087	320	430	80	4850	3600×2800×2000
	1	145	21.40-53.50	756-1889
	1.25	181	19.30-48.25	681-1704

Water Lubricated Screw Compressor Vs Dry Oil-Free Screw Compressor

1	Water lubricated oil free screw compressor	Dry oil free screw compressor
2	Entire machine has no oil	Compression chamber has no oil, relies on sealing
3	One-stage compression, structure is simple, system is reliable	Two-stage compression, complicated structure leads to the high failure rate
4	Low energy consumption(saving 8~15%)	High energy consumption (Mechanical loss and leakage)
5	Low maintenance cost(1/3 of dry oil free)	High maintenance cost(increase every year)
6	Low noise	High noise
7	Low vibration	High vibration
8	The air end rotation speed is as low as 2950r/min	The air end rotation speed is as high as 18000r/min
9	Operating temperature is 30℃	Operating temperature is 200℃
Shortcut	If room temperature is lower than 0℃, water needs to be drained manually, otherwise there is a risk that the water and gas barrels may freeze.	If it is shut down for a long time, it needs to be turned on frequently to drive away the tide. If there is a power outage, the air end needs to be turned manually, otherwise it has the risk of the air end cracking.

(1) Structure Comparison

Item	Water lubricated oil free screw compressor	Dry oil free screw compressor
Bearing quantity	7	14
Speed increasing gear	Motor and air end are directly connected with rotation speed 3000r/m, no speeding increasing gears	With speeding increasing gears, rotation speed is over 18000r/m
Synchronized gear	N/A	The synchronization gear is used to ensure that the male and female rotor gears are slightly worn and the rotor will be damaged
Sealing system	2 groups	8 groups
Compression stage	One stage compression	Two stages compression
Efficiency	High efficiency, minimum efficiency can reach 7.5KW	Low efficiency, minimum efficiency 37kW

(2) Compressed Air Solution Quality Comparison

Item	Water lubricated oil free screw compressor	Dry oil free screw compressor
Impurities	In addition to the filter at the air inlet, pure water washes away impurities in the air, leaving the air almost free of impurities.	Only adopts the inlet air filter, and the peeling off of the screw rotor coating will mix with the compressed air
Oil	Absolutely oil free	Semi-oil-free; there is no oil in the compression chamber, but there is oil in the gear box. The air and oil are separated by the seal. If the seal is damaged, the compressed air will be polluted.
Exhaust Temperature	Lower than 50 ℃	Higher than 180℃
Corrosive gas	Pure water neutralizes corrosive gases in the air, and some harmful gases have been dissolved in the water	Inhaled corrosive gases cannot be processed
Moisture	The outlet temperature is not higher than 50℃, and the atmospheric dew point moisture content at this temperature is 83g/m³	Because the outlet temperature is ober 180°C, it is over 90°C even after cooling. The atmospheric dew point moisture content at this temperature is 230 g/m³.

(3) Operation Cost

Item	Water lubricated oil free screw compressor	Dry oil free screw compressor
Electricity	Low, taking 55kW model as example, 8kW electricity saved per hour	High
Maintenance consumable	Water filter, air filter	Lubricating oil, oil filters, seals, air filters, rotor coatings
Maintenance cost	Low. Taking 30kw as an example, the annual maintenance cost is no more than 3,000 yuan.	High, taking 37KW as an example, the annual maintenance cost is about 10,000 yuan, and will increase year by year. After three years, the rotor coating maintenance cost is over 50,000 yuan.
Oil free safety	Because there is no lubricating oil in the air end, it is absolutely safe.	Replacement of the air end bearings, improper installation, or overtime maintenance may cause oil contamination of the compressed air.

CM-PV Oil-Free Screw Air Compressor

Natural Gas Compressor Applications

Natural gas compressors play a critical role in various industries and applications, primarily by increasing the pressure of natural gas to facilitate its transportation, storage, and use. Here are some common applications:

Coal Mine Gas Recovery: Natural gas compressors are vital in coal mines for capturing methane gas released during mining. This gas, often a byproduct, is compressed for safe transport or conversion into energy, reducing emissions and enhancing safety by preventing underground gas buildup while providing a valuable fuel source.
Natural Gas Secondary Recovery: In secondary recovery, compressors boost the pressure of natural gas from depleted reservoirs. This process extends the life of gas fields by extracting residual gas, making it economically viable to recover resources that would otherwise remain trapped, supporting energy production and sustainability efforts.
Oil Fields: Compressors in oil fields pressurize associated natural gas extracted alongside crude oil. This enables efficient transportation through pipelines or reinjection into reservoirs to enhance oil recovery, minimizing flaring, optimizing resource use, and maintaining pressure for continued extraction operations.
Refineries: In refineries, natural gas compressors handle gas streams for processing, fuel supply, or chemical production. They ensure steady pressure for refining operations, enabling the conversion of raw hydrocarbons into usable products like gasoline, while maintaining efficiency and meeting strict environmental standards.
Natural Gas Chemical Plants: Compressors in these plants pressurize natural gas for use as a feedstock in producing chemicals like ammonia or methanol. This high-pressure gas is critical for catalytic reactions, ensuring consistent supply and optimizing yields in large-scale chemical manufacturing processes.
Chemical Fiber Plants: In chemical fiber production, natural gas compressors support processes like polymerization by delivering pressurized gas for energy or as a raw material. This ensures stable operations, enhances efficiency, and supports the creation of synthetic fibers like nylon or polyester for textiles and industrial uses.