CN105154157B - Landfill gas produces the pretreatment unit and method of compressed natural gas - Google Patents
Landfill gas produces the pretreatment unit and method of compressed natural gas Download PDFInfo
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- CN105154157B CN105154157B CN201510519155.0A CN201510519155A CN105154157B CN 105154157 B CN105154157 B CN 105154157B CN 201510519155 A CN201510519155 A CN 201510519155A CN 105154157 B CN105154157 B CN 105154157B
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- 239000007789 gas Substances 0.000 title claims abstract description 123
- 238000000034 method Methods 0.000 title claims abstract description 59
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000003345 natural gas Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 165
- 239000007788 liquid Substances 0.000 claims abstract description 107
- 239000007921 spray Substances 0.000 claims abstract description 54
- 210000004907 gland Anatomy 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000010865 sewage Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 18
- 230000003020 moisturizing effect Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 230000008901 benefit Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000011261 inert gas Substances 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 239000010813 municipal solid waste Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002361 compost Substances 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Processing Of Solid Wastes (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides the pretreatment unit and method of a kind of landfill gas production compressed natural gas.The pretreatment unit includes landfill gas pipeline, water supply line, product gas pipeline, water spray helical-lobe compressor, liquid filter, gas-liquid cooler and gas-liquid separator；Entrance of the technique water out of the landfill gas pipeline, the water supply line and the gas-liquid separator with the water spray helical-lobe compressor is connected；The technique water out is connected by the liquid filter with the entrance of the water spray helical-lobe compressor；The outlet of the water spray helical-lobe compressor is connected by the gas-liquid cooler with the entrance of the gas-liquid separator；The product gas pipeline is connected with the balance sealing gland air inlet of the water spray helical-lobe compressor.The present invention can simplify technique, reduce equipment and operating cost, and reduce sewage yield.
Description
Technical field
The present invention relates to landfill gas process field, more particularly to a kind of pretreatment unit of landfill gas production compressed natural gas
And method.
Background technology
Averagely everyone produces 0.8~1.1kg rubbish daily, and annual still with 8%~10% speed increasing in China at present
It is long.1.72 hundred million tons of the Our Country Primary Cities house refuse amount of clearing in 2013, it is contemplated that will reach 4.09 hundred million tons to the year two thousand thirty, arrive
The year two thousand fifty is up to 5.28 hundred million tons.Garbage disposal includes the various ways such as sanitary landfills, burning disposal and aerobic compost.To 2013
End of the year China's application of city life garbage harmless treatment rate is up to 89.3%, wherein carrying out concentration sanitary landfills, burning and compost
Ratio is respectively 68.2%, 30.1% and 1.7%.Although burning proportion in recent years to have been lifted, sanitary landfills is still
It is the main processing ways from now in longer period of time.Increasing rubbish enters landfill yard, and filled
Rubbish, substantial amounts of landfill gas will certainly be produced.
Organic waste in the refuse landfill caused landfill gas (LFG) after anaerobic digestion be it is a kind of have contaminative and
Explosion hazard gas, its main component are (CH4) and carbon dioxide (CO2), and wherein methane accounts for 45~60%, and carbon dioxide accounts for
40~60%, in addition also include nitrogen, hydrogen, hydrogen sulfide, minimum gas and granule foreign.If landfill gas is not added
To collect processing and utilize, it is allowed to be directly discharged into air, pernicious gas therein can also aggravate greenhouse while environment is polluted
Effect, and be that one kind has volatile hazardous gas again under certain conditions.Meanwhile contain in landfill gas it is main into
It is the high clean fuel of value to divide methane, has very high calorific value.At present, the Land use systems of landfill gas mainly have generating
With production compressed natural gas used as vehicle fuel etc..Because the economic benefit for producing compressed natural gas used as vehicle fuel is higher than generating electricity, therefore, increasingly
More landfill yards is using the Land use systems for producing compressed natural gas.
For the landfill gas come out from refuse landfill extraction, for its composition feature, common landfill gas production compression
The technique of natural gas is：Pretreatment (landfill gas be pressurized+wash dedusting)+desulfurization+deoxidation+decarburization+natural gas compressing (high pressure).With
Past landfill gas pretreating process is using once supercharging (low pressure, for subsequently washing)+washing dedusting+gas-liquid separation+secondary increasing
Press (middle pressure, for follow-up decarburization), and secondary booster uses piston compressor.Not only process procedure is more for the pretreating process,
And because piston compressor has following deficiency：1) consumable accessory is more, year maintenance cost it is higher, generally compressor price sheet
The 10% of body；2) volume is larger, causes floor space larger；3) the continuous cycle of operation is shorter, and generally 3-6 months, it is necessary to standby
Machine；4) higher is required to footing foundation.In summary, as landfill gas produces the extensive use of compressed natural gas, it is necessary to open
Simple, investment of sending out technique a kind of and the relatively low preprocess method of operating cost.
The content of the invention
It is an object of the invention to provide the landfill gas production compression that a kind of technique is simple, investment and operating cost are relatively low is natural
The pretreatment unit and method of gas.
The invention provides a kind of pretreatment unit of landfill gas production compressed natural gas, including landfill gas pipeline, moisturizing
Pipeline, product gas pipeline, water spray helical-lobe compressor, liquid filter, gas-liquid cooler and gas-liquid separator；The landfill tracheae
Entrance of the technique water out of line, the water supply line and the gas-liquid separator with the water spray helical-lobe compressor is connected；
The technique water out is connected by the liquid filter with the entrance of the water spray helical-lobe compressor；The water spray screw rod pressure
The outlet of contracting machine is connected by the gas-liquid cooler with the entrance of the gas-liquid separator；The product gas pipeline and the spray
The balance sealing gland air inlet connection of water helical-lobe compressor.
Preferably, the landfill gas pipeline, water supply line, be respectively arranged with valve, the water spray spiral shell on product gas pipeline
Between bar compressor and the gas-liquid cooler, between the gas-liquid cooler and the gas-liquid separator, the gas-liquid separation
Valve is provided between device and the liquid filter and between the liquid filter and the water spray helical-lobe compressor
Door.
Present invention also offers a kind of preprocess method of landfill gas production compressed natural gas, there is provided above-mentioned pretreatment dress
Put, including：In system start-up phase, the landfill gas that extraction is obtained and come from the gas that the water of the water supply line mixes
Aqueous mixtures input the water spray helical-lobe compressor；The air-water mixture is pressurized to using the water spray helical-lobe compressor
0.45-0.8MPa, so as to which the dust in landfill gas is transferred in water from landfill gas；By the air-water mixture after supercharging
It is passed through after being cooled down by the gas-liquid cooler in the gas-liquid separator；Make the process water warp that the gas-liquid separator separates go out
Come from the water of the water supply line instead of at least a portion after crossing the liquid filter and the water spray helical-lobe compressor enters
Landfill gas at mouthful is mixed so as to obtain the air-water mixture and input the water spray helical-lobe compressor so that system enters just
The normal operation phase；Landfill gas after making the dedusting of the gas-liquid separator generation and being pressurized makes the gas-liquid separator from described
Top discharge, using the water isolated in the middle part of the gas-liquid separator as the process water, and make the water containing dust through drop
Fall and be stored in the bottom of the gas-liquid separator, periodically discharged from the outfall of the gas-liquid separator bottom；Will production
Product gas is passed through the balance sealing gland air inlet of the water spray helical-lobe compressor, to utilize the product gas to the water spray screw compression
Machine carries out sealing gland.
Preferably, by adjusting the process water or water from the water supply line, control from the gas-liquid separation
The temperature of landfill gas is less than or equal to 45 DEG C after pretreatment at the top of device out.
Preferably, the product gas is methane.
Compared with prior art, the present invention can simplify technique, reduce equipment and operating cost, and reduces sewage and produce
Amount.
Brief description of the drawings
Fig. 1 is the structural representation of the pretreatment unit of the landfill gas production compressed natural gas in the present invention；
Fig. 2 is the flow chart of the preprocess method of the landfill gas production compressed natural gas in the present invention.
Reference in figure：1st, gas pipeline is filled；2nd, water supply line；3rd, product gas pipeline；4th, water spray helical-lobe compressor；5、
Liquid filter；6th, gas-liquid cooler；7th, gas-liquid separator；8th, Sewage outlet；9th, gas discharge outlet.
Embodiment
In order to further illustrate the principle and structure of the present invention, the preferred embodiments of the present invention are carried out in conjunction with Fig. 1 detailed
Describe in detail bright, but the embodiment is only to provide explanation to be used with explanation, it is impossible to for limiting scope of patent protection of the invention.
Fig. 1 is refer to, the invention provides a kind of pretreatment unit of landfill gas production compressed natural gas, including landfill gas
Pipeline 1, water supply line 2, product gas pipeline 3, water spray helical-lobe compressor 4, liquid filter 5, gas-liquid cooler 6 and gas-liquid separation
Device 7；The landfill gas pipeline 1, the water supply line 2 and the gas-liquid separator 7 technique water out with the water spray spiral shell
The entrance connection of bar compressor 4；The technique water out passes through the liquid filter 5 and the water spray helical-lobe compressor 4
Entrance connects；The outlet of the water spray helical-lobe compressor 4 passes through the gas-liquid cooler 6 and the entrance of the gas-liquid separator 7
Connection；The product gas pipeline 3 is connected with the balance sealing gland air inlet of the water spray helical-lobe compressor 4.
Wherein, helical-lobe compressor 4 of spraying water is used for landfill gas supercharging and dedusting, and helical-lobe compressor 4 of on the one hand spraying water will fill
Atmospheric pressure increases to 0.45-0.8MPa, and on the other hand, air-water mixture is in the cavity of water spray helical-lobe compressor 4, by apart
Nearer stator and running at high speed for rotor increases gas-liquid-solid contact area, strengthens gas-liquid-solid mass transfer, so as to by landfill gas
Dust water is transferred to from landfill gas, realize high-effective dust-removing.
Gas-liquid cooler 6 is used to cool down air-water mixture after compression, facilitates follow-up gas-liquid separation.
Gas-liquid separator 7 is used to air-water mixture being separated into clean landfill gas and water containing dust, and will contain ash
The water of dirt is divided into sewage rich in dust and more clean water through settlement action.
Liquid filter 5 is used to that more process water will to be obtained after the further filtering and impurity removing of clean water in gas-liquid separator,
Technique waterpipe is connected for blended landfill gas and process water with landfill gas pipeline 1.Water supply line 2 connects with landfill gas pipeline 1
For blended landfill gas and moisturizing.
Gas discharge outlet 9 is set at the top of gas-liquid separator, for discharging the landfill gas after removing dust is pressurized；Gas-liquid separator
Bottom sets Sewage outlet 8, is same as periodically discharging the sewage containing dust.
Product gas pipeline 3 connects with the balance sealing gland air inlet for helical-lobe compressor 4 of spraying water, convenient to use product gas (methane)
The inert gases such as traditional nitrogen are substituted to realize the balance sealing gland of compressor.
During work, the landfill gas that extraction is obtained and the process water mixing for coming from liquid filter utilize screw rod of spraying water
Air-water mixture is pressurized to 0.45-0.8MPa by compressor, and the air-water mixture after supercharging is cooled down by gas-liquid cooler, and is led to
Cross gas-liquid separator to separate the water in air-water mixture, and be finally completed the supercharging removal of impurities pretreatment of landfill gas, so as to obtain
Meet the landfill gas of subsequent technique requirement.Further, the water in the middle part of gas-liquid separator is collected to filter by liquid filter
It is used as process water, and the periodically sewage of drainage gas-liquid separator bottom afterwards.In addition, when boot system starts, can by from
The moisturizing of water supply line 2 mixes with the landfill gas that extraction obtains, and when system runs well, recycles process water to replace at least one
Part moisturizing.In addition, it can be less than or equal to by the temperature of landfill gas after adjusting the water rate control pretreatment of process water or moisturizing
45℃；Finally, the balance sealing gland of helical-lobe compressor of spraying water substitutes the inert gases such as traditional nitrogen by using product gas (methane)
To realize.
It can be seen that compared with prior art, supercharging and dust removal integrated can be achieved in the present invention, reduces technique unit equipment,
Overcoming other compressor types needs the deficiency of extra increase cleaner；Process water and landfill gas are entered into water spray spiral shell simultaneously
Bar compressor, compared with pretreating process of the prior art, transported by the stator for helical-lobe compressor of spraying water and the high speed of rotor
Turn to increase liquid-solid contact area, strengthen gas-liquid-solid mass transfer, it is achieved thereby that the high accuracy of landfill gas dedusting, high efficiency, and remove
The energy-conservation of dirt process, water saving；The inert gases such as water spray helical-lobe compressor generally use nitrogen of the prior art realize Balance Air
Envelope, causes inert gas to enter product gas, influences the purity of product gas, and in the present invention, put down using product gas (methane)
Weigh sealing gland, improves product gas quality, and eliminate inert gas preparation facilities.
In summary, compared with prior art, the present invention can simplify technique, reduce equipment and operating cost, and reduce
Sewage yield.
Operated for ease of adjusting process, it is preferable that the landfill gas pipeline 1, water supply line 2, on product gas pipeline 3 respectively
Valve is provided with, between the water spray helical-lobe compressor 4 and the gas-liquid cooler 6, the gas-liquid cooler 6 and the gas-liquid
Between separator 7, between the gas-liquid separator 7 and the liquid filter 5 and the liquid filter 5 and the spray
Valve is provided between water helical-lobe compressor 4.
Fig. 2 is refer to, present invention also offers a kind of preprocess method of landfill gas production compressed natural gas, there is provided above-mentioned
Pretreatment unit, including：In system start-up phase, the landfill gas that extraction is obtained and the water for coming from the water supply line 2
The air-water mixture input water spray helical-lobe compressor 4 mixed；Using the water spray helical-lobe compressor 4 by the air water
Mixture is pressurized to 0.45-0.8MPa, so as to which the dust in landfill gas is transferred in water from landfill gas；By the institute after supercharging
State after air-water mixture is cooled down by the gas-liquid cooler 6 and be passed through in the gas-liquid separator 7；Make the gas-liquid separator 7
The process water isolated replaces water and the institute for coming from the water supply line 2 at least partially after the liquid filter 5
The landfill gas for stating water spray helical-lobe compressor 4 porch is mixed so as to obtain the air-water mixture and input the water spray screw rod pressure
Contracting machine 4 is so that system enters normal operating phase；Landfill gas after making the dedusting that the gas-liquid separator 7 generates and being pressurized from
The top for making the gas-liquid separator 7 is discharged, and the water that the middle part of gas-liquid separator 7 is isolated is as the technique
Water, and make the water containing dust through dripping and being stored in the bottom of the gas-liquid separator 7, periodically from the gas-liquid separator 7
The outfall discharge of bottom；Product gas is passed through to the balance sealing gland air inlet of the water spray helical-lobe compressor 4, to utilize institute
State product gas and sealing gland is carried out to the water spray helical-lobe compressor 4.
Preferably, by adjusting the process water or water from the water supply line, control from the gas-liquid separation
The temperature of landfill gas is less than or equal to 45 DEG C after the pretreatment of the top of device 7 out.
Preferably, the product gas is methane.
Below, working process and principle of the invention are described in detail.
The landfill gas for carrying out extraction during the first starting up of system and running water moisturizing are mixed, and air-water mixture is passed through
The inlet end of water spray helical-lobe compressor 4.In the cavity of water spray helical-lobe compressor 4, by spray water in helical-lobe compressor 4 at a distance of compared with
Near stator and running at high speed for rotor increases gas-liquid-solid contact area, strengthens gas-liquid-solid mass transfer, so as to will efficiently fill
Dust in gas is transferred in running water from landfill gas, meanwhile, under the compression of water spray helical-lobe compressor, mixing wastewater with air
Thing is pressurized to 0.45-0.8MPa.
Air-water mixture after supercharging is discharged from the outlet side of water spray helical-lobe compressor 4 and is passed through gas-liquid cooler 6.Through gas
After liquid cooler 6 cools down, the import on air-water mixture from the top of gas-liquid separator 7 is passed through gas-liquid separator 7.
After gas-liquid separation, the landfill gas after dedusting and supercharging is discharged from the gas discharge outlet 9 at the top of gas-liquid separator 7
Enter subsequent treatment process；Running water containing dust is dripped after gas-liquid separator 7 and is stored under gas-liquid separator 7
Portion, dust falls to the bottom of gas-liquid separator 7 and periodically can thus discharged from Sewage outlet 8 under gravity contains dust
Sewage；More clean running water is discharged from the middle part of gas-liquid separator 7, and carries out filtering and impurity removing by liquid filter 5
Afterwards, the inlet end of water spray helical-lobe compressor 4 is recycled back to as process water, and air-water mixture is mixed to form with landfill gas.
In normal course of operation, mainly it can be mixed using process water with landfill gas, it is only necessary to pass through water supply line 2
A small amount of running water is supplemented, for making up because of sewage discharge and being landfilled the part of running water loss that gas takes away.
Moisturizing or process water also have the function of cooling in compression process, by the water control for adjusting process water or moisturizing
Temperature≤45 DEG C of landfill gas after pretreatment of the system at the top of gas-liquid separator out.
In the running of water spray helical-lobe compressor, it balances sealing gland and substitutes traditional nitrogen by using product gas (methane)
The inert gases such as gas are realized, improve the quality of product gas, are avoided because realizing balance sealing gland using inert gases such as traditional nitrogen
And cause inert gas to enter product gas, influence the purity of product gas.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of pretreatment unit of landfill gas production compressed natural gas, it is characterised in that including landfill gas pipeline (1), moisturizing
Pipeline (2), product gas pipeline (3), water spray helical-lobe compressor (4), liquid filter (5), gas-liquid cooler (6) and gas-liquid separation
Device (7)；Gas discharge outlet (9) is set at the top of gas-liquid separator (7), for discharging the landfill gas after removing dust is pressurized；Gas-liquid point
Sewage outlet (8) is set from device (7) bottom, for periodically discharging the sewage containing dust；
The landfill gas pipeline (1), the water supply line (2) and the gas-liquid separator (7) technique water out with it is described
The entrance connection of water spray helical-lobe compressor (4)；The technique water out passes through the liquid filter (5) and the water spray screw rod
The entrance connection of compressor (4)；
The outlet of the water spray helical-lobe compressor (4) passes through the gas-liquid cooler (6) and the entrance of the gas-liquid separator (7)
Connection；
The product gas pipeline (3) is connected with the balance sealing gland air inlet of the water spray helical-lobe compressor (4).
2. pretreatment unit according to claim 1, it is characterised in that it is described landfill gas pipeline (1), water supply line (2),
Valve is respectively arranged with product gas pipeline (3), between the water spray helical-lobe compressor (4) and the gas-liquid cooler (6), institute
State between gas-liquid cooler (6) and the gas-liquid separator (7), the gas-liquid separator (7) and the liquid filter (5) it
Between and the liquid filter (5) and water spray helical-lobe compressor (4) between be provided with valve.
A kind of 3. preprocess method of landfill gas production compressed natural gas, there is provided the pretreatment unit described in claim 1 or 2,
It is characterised in that it includes：
In system start-up phase, the landfill gas that extraction is obtained and come from the gas that the water of the water supply line (2) mixes
The aqueous mixtures input water spray helical-lobe compressor (4)；
The air-water mixture is pressurized to 0.45-0.8MPa using the water spray helical-lobe compressor (4), so as to by landfill gas
Dust be transferred to from landfill gas in water；
The gas-liquid separator (7) is passed through after the air-water mixture after supercharging is cooled down by the gas-liquid cooler (6)
In；
The process water that the gas-liquid separator (7) is isolated is set to replace at least a portion after the liquid filter (5)
Mix from the water in the water supply line (2) with the landfill gas of described water spray helical-lobe compressor (4) porch so as to described in obtaining
Air-water mixture simultaneously inputs the water spray helical-lobe compressor (4) so that system enters normal operating phase；
Landfill gas after making the dedusting that the gas-liquid separator (7) generates and being pressurized makes the gas-liquid separator (7) from described
Top discharge, using the water isolated in the middle part of the gas-liquid separator (7) as the process water, and pass through the water containing dust
Drip and be stored in the bottom of the gas-liquid separator (7), periodically arranged from the outfall of the gas-liquid separator (7) bottom
Go out；
Product gas is passed through to the balance sealing gland air inlet of the water spray helical-lobe compressor (4), to utilize the product gas to described
Helical-lobe compressor (4) of spraying water carries out sealing gland.
4. preprocess method according to claim 3, it is characterised in that by adjusting the process water or from the benefit
The water of water pipeline, the temperature of landfill gas after the pretreatment at the top of the gas-liquid separator (7) out is controlled to be less than or equal to
45℃。
5. the preprocess method according to claim 3 or 4, it is characterised in that the product gas is methane.
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| CN108300530A (en) * | 2018-01-30 | 2018-07-20 | 孙吉毅 | A kind of Marsh-gas desulfurizer |
| CN113803637B (en) * | 2020-06-11 | 2023-07-04 | 中国石油化工股份有限公司 | High-pressure gas pressure control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048880A (en) * | 1989-07-19 | 1991-01-30 | 上海船用柴油机研究所 | Recovery device for wet screw compressor torch gas |
| CN1740628A (en) * | 2005-08-23 | 2006-03-01 | 胜利油田胜利动力机械有限公司 | Coal mine gas and fine spray mixed conveying method and apparatus |
| CN201627725U (en) * | 2010-04-15 | 2010-11-10 | 广东正力精密机械有限公司 | Water-cooled single-screw air compressor |
-
2015
- 2015-08-23 CN CN201510519155.0A patent/CN105154157B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048880A (en) * | 1989-07-19 | 1991-01-30 | 上海船用柴油机研究所 | Recovery device for wet screw compressor torch gas |
| CN1740628A (en) * | 2005-08-23 | 2006-03-01 | 胜利油田胜利动力机械有限公司 | Coal mine gas and fine spray mixed conveying method and apparatus |
| CN201627725U (en) * | 2010-04-15 | 2010-11-10 | 广东正力精密机械有限公司 | Water-cooled single-screw air compressor |
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