CN105089975A - Compressor suitable for coalbed methane and manufacturing method of compressor - Google Patents
Compressor suitable for coalbed methane and manufacturing method of compressor Download PDFInfo
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- CN105089975A CN105089975A CN201510619787.4A CN201510619787A CN105089975A CN 105089975 A CN105089975 A CN 105089975A CN 201510619787 A CN201510619787 A CN 201510619787A CN 105089975 A CN105089975 A CN 105089975A
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Abstract
The invention discloses a compressor suitable for coalbed methane and a manufacturing method of the compressor. According to the method, an existing compressor suitable for coalbed methane serves as a machine body, and a medium pressure dewaterer is arranged in a multi-stage cylinder in the compressor so that the dewatering technology can be completed while a compression technology is performed on the coalbead methane. Conventional practice of natural gas deep watering in the prior art is changed, and front low pressure deep dewatering or rear high pressure deep dewatering is changed into medium pressure deep dewatering. The compressor suitable for coalbed methane and the manufacturing method of the compressor have the beneficial effects that investment of the medium pressure dewaterer is more than 100,000 yuan less than that of a low pressure deep dewatering device, the investment of the medium pressure dewaterer is equivalent to that of a high pressure deep dewatering device, the equipment size of medium pressure dewaterer is far smaller than that of the low pressure deep dewatering device, and arrangement is easier when the compressor is pried up; the dual-machine dual-drive structural design is adopted, a motor can perform implementation step by step during operation, starting current is smaller, and safety is improved; and meanwhile the rotating torque is small when the equipment is started, vibration and noise are small in the running process, and the equipment can run more stably.
Description
Technical field
The present invention relates to a kind of compressor being applicable to coal-seam gas and preparation method thereof, be mainly used in coal-seam gas and produce CNG, belong to coal-seam gas compression technique area.
Background technique
In the exploration and development of coal gas field in earlier stage, because well-digging quantity is few, methane output is low, and does not concentrate, and usual way is emptying of coal-seam gas being burnt.In order to protection of the environment, realize energy-saving and emission-reduction, need to take small-sized coalbed methane recovery equipment that coal-seam gas is made CNG, to reach the object of comprehensive utilization.
At present, produce CNG by coal-seam gas, its common practice is:
(1) coal-seam gas compression: take single-row compressor Pyatyi cylinder series, its defect is:
Because the pressure of coal-seam gas is lower, when device processes amount is 1000m
3/ d ~ 3000m
3during/d, take single-row compressor Pyatyi cylinder series, the power of motor configuration of compressor will reach 45KW.In fact, under many circumstances, user only needs the middle pressure CNG of 4MPa.If produce the middle pressure CNG of 4MPa, single-row compressor three-stage cylinder series just can realize, the power of motor configuration 37KW of compressor.Obviously, take to press CNG in single-row compressor Pyatyi cylinder produced in series, its energy consumption obviously increases many than single-row compressor three-stage cylinder series.
(2) coal-seam gas dehydration: depth of depression dehydration or high-pressure deep dehydration after compressing before existing generally employing air inlet, all there is some problems in these two kinds of dehydration ways, its defect is:
1. preposition depth of depression dehydration: its dewatering unit volume is large, take into the sled device space large, invest high, in running, energy consumption is high, molecular sieve and filter core short for working life, maintenance cost is high.
2. rearmounted high-pressure deep dehydration: through the inlet pressure of high pressure dewatering unit and the pressure reduction of outlet pressure restive, isobaric regeneration is difficult to realize, very easily cause the molecular sieve in high pressure dewatering unit to brush, broken, efflorescence, so that cause molecular sieve to lose efficacy, high pressure dewatering unit cannot work, and then the moisture making the molecular sieve dust containing fragmentation in CNG product and cannot remove, make CNG quality of product reach requirement.
Summary of the invention
The object of the invention is: for the defect of prior art, a kind of compressor being applicable to coal-seam gas and preparation method thereof is provided, deep dehydrator is pressed in arranging between multi-stage cylinder series, more easily can realize isobaric regeneration, better control inlet/outlet pressure, reduces inlet/outlet pressure reduction, reduces molecular sieve and filter core damage, extend its working life, reduce maintenance cost; Equipment working efficiency can be improved, reduce electric power energy consumption; Can improve the quality of products, overcome the deficiency existed in prior art processes.
Technological scheme of the present invention
Be applicable to a compressor making method for coal-seam gas, the method is using the existing compressor being applicable to coal-seam gas as body, and in arranging between the multi-stage cylinder of compressor inside, pressure-off hydrophone is to realize completing dewatering process when carrying out compression process to coal-seam gas.
Aforesaidly a kind ofly be applicable in the compressor making method of coal-seam gas, specific implementation process is, cylinder in whole compressor is divided into low-pressure cylinder series and high pressure air pressure series, and adopt two-shipper independently to drive low-pressure cylinder series and high pressure air pressure series, pressure-off hydrophone in arranging between low-pressure cylinder series and high pressure air pressure series is also together in series by pipeline one, be provided with pipeline two and this pipeline two is connected with compressor output end at middle pressure-off hydrophone outlet end, pipeline two forms coordination with high pressure cylinder series.
Aforesaidly a kind ofly be applicable in the compressor making method of coal-seam gas, set gradually gas-liquid separator, piping filter, dust removal filter, knock out drum etc. in low-pressure cylinder series front end, realized coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing.
Aforesaidly a kind ofly be applicable in the compressor making method of coal-seam gas, one-way valve two and stop valve two be set at the afterbody of pipeline two, the pipeline one between high pressure cylinder series and middle pressure-off hydrophone arranges one-way valve one and stop valve one.
A kind of compressor being applicable to coal-seam gas, comprise the multi-stage cylinder series being positioned at compressor inside, multi-stage cylinder series is divided into low-pressure cylinder series and high pressure cylinder series, it is characterized in that: middle pressure-off hydrophone be arranged on low-pressure cylinder series and high pressure cylinder serial between and be together in series by pipeline one, during pipeline two connects, pressure-off hydrophone outlet end also forms coordination with high pressure cylinder series.
Aforesaidly a kind ofly be applicable in the compressor of coal-seam gas, one-way valve two and stop valve two be set at the afterbody of pipeline two, the pipeline one between high pressure cylinder series and middle pressure-off hydrophone arranges one-way valve one and stop valve one.
Aforesaidly a kind ofly be applicable in the compressor of coal-seam gas, set gradually gas-liquid separator, piping filter, dust removal filter, knock out drum in low-pressure cylinder series front end, realized coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing.
Owing to have employed technique scheme, compared with prior art, the present invention changes the Normal practice of single-row compressor, deep natural gas dehydration in the past, and change preposition depth of depression dehydration or the dehydration of rearmounted high-pressure deep into middle pressure deep dehydration, its advantage is:
1. take the structural design of two row compressor Dual Drive, can implement step by step during starting electrical machinery, inrush current is less, and Security is higher, and during device start, torque is little simultaneously, and vibrate little during operation, noise is little, and equipment runs more steady.
2. export CNG product more flexible, the middle pressure CNG product that low pressure compressor exports separately 4MPa can be opened, also can open the ultrahigh pressure CNG product that height compressor exports separately 25MPa.
When pressing CNG product if 3. export in 4MPa, opening low-pressure cylinder series of compression can realize, and compressor configuration power of motor 37KW, its energy consumption is obviously little many than unlatching two row compressor.
4. middle pressure deep dehydrator is taked; its investment fewer than depth of depression dewatering unit more than 10 ten thousand yuan; suitable with high-pressure deep dewatering unit foundation of investment; and plant bulk is much less than depth of depression dewatering unit; easier layout when becoming to prize; using effect is better; simultaneously; coal-seam gas after low-pressure cylinder series of compression and middle pressure deep dehydration is purer; better protective action can be played to the compressor of high pressure cylinder series; extend the working life of the compressor of high pressure cylinder series, reduce maintenance maintenance cost.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing to the present invention with being described in further detail, but not as any limitation of the invention.
Embodiments of the invention: a kind of compressor making method being applicable to coal-seam gas, the method is using the existing compressor being applicable to coal-seam gas as body, and in arranging between the multi-stage cylinder of compressor inside, pressure-off hydrophone is to realize completing dewatering process when carrying out compression process to coal-seam gas.
Specific implementation process is, cylinder in whole compressor is divided into low-pressure cylinder series and high pressure air pressure series, and adopt two-shipper independently to drive low-pressure cylinder series and high pressure air pressure series, pressure-off hydrophone in arranging between low-pressure cylinder series and high pressure air pressure series is also together in series by pipeline one, pipeline two is provided with and this pipeline two is connected with compressor output end at middle pressure-off hydrophone outlet end, pipeline two forms coordination with high pressure cylinder series, gas-liquid separator has been set gradually in low-pressure cylinder series front end, piping filter, dust removal filter, knock out drum etc., realize coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing, at the afterbody of pipeline two, one-way valve two and stop valve two are set, pipeline one between high pressure cylinder series and middle pressure-off hydrophone arranges one-way valve one and stop valve one.
According to a kind of compressor being applicable to coal-seam gas that said method is formed, as shown in drawings, comprise the multi-stage cylinder series being positioned at compressor inside, multi-stage cylinder series is divided into low-pressure cylinder series 16 and high pressure cylinder series 15, it is characterized in that: middle pressure-off hydrophone 8 to be arranged between low-pressure cylinder series 16 and high pressure cylinder series 15 and to be together in series by pipeline 1, and during pipeline 2 18 connects, pressure-off hydrophone 8 outlet end also forms coordination with high pressure cylinder series 15.
Wherein safety check 2 13 and stop valve 2 14 are set at the afterbody of pipeline 2 18, pipeline 1 between high pressure cylinder series 15 and middle pressure-off hydrophone 8 arranges safety check 1 and stop valve 1, set gradually gas-liquid separator 1, piping filter 2, dust removal filter 3, knock out drum 4 in low-pressure cylinder series 16 front ends, realize coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing.
Concrete working process, the compressor model adopted in the present invention is VWF-1/ (0.5 ~ 2.5)-(40 ~ 50)+ZF-0.06/(35 ~ 50)-250, the cylinder series of this compressor is total up to Pyatyi, whole compressor apparatus is divided into two (namely distinguishes low-pressure cylinder series 16 and high pressure cylinder series 15, take two Column Layouts, two-shipper Dual Drive is run, low-pressure cylinder series 16(can be described as the 1st row compressor) comprise one-level cylinder 5, secondary cylinder 6 and three-stage cylinder 7, high pressure cylinder series 17(can be described as the 2nd row compressor) comprise level Four cylinder 11 and Pyatyi cylinder 12, middle pressure-off hydrophone 8 is provided with between two series, the model that in this, pressure-off hydrophone 8 adopts is STQ150-5.0-6.0/6.6-FBBD.Set gradually gas-liquid separator 1, piping filter 2, dust removal filter 3, knock out drum 4 etc. entering the 1st row compressor air inlet front end, realize coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing etc., wherein after cylinder at different levels, be all disposed with cooler 19 and separator-filter 20.
The outlet port of above-mentioned middle pressure-off hydrophone 8 is provided with pipeline 2 18 and pipeline 1 and is coordination each other, by pipeline one 17(GL-1) the 1st row compressor, middle pressure deep dehydrator, the 2nd row compressor are together in series, output products is the ultrahigh pressure CNG of 20MPa; By pipeline two 18(and GL-2) the 1st row compressor, middle pressure deep dehydrator are together in series, output products is the middle pressure CNG of 4MPa.
(1), on pipeline GL-1, arrange safety check 1, stop valve 1, when closedown 9 and 10 liang of valves, its technological process is: coal-seam gas, by the 1st row compressor and middle pressure deep dehydration 8, exports the middle pressure CNG of 4MPa; This process the 2nd row compressor is in closed condition.
(2), safety check 2 13, stop valve 2 14 are set on pipeline GL-2; When closedown 13 and 14 liang of valves, its technological process is: coal-seam gas, by the 1st row compressor, middle pressure deep dehydration, the 2nd row compressor, exports the ultrahigh pressure CNG of 20MPa.
With reference to concrete accompanying drawing: when pressing CNG in production 4MPa, close safety check 1, stop valve 1, open safety check 2 13, stop valve 2 14, open the 1st row compressor, make technological process be: in coal-seam gas air inlet → 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 13 → 14 → output, press CNG;
When producing 20MPa ultrahigh pressure CNG, close safety check 2 13, stop valve 2 14, open safety check 1, stop valve 1, substep opens the 1st row, the 2nd row compressor, makes technological process be: coal-seam gas air inlet → 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10 → 11 → 12 → output ultrahigh pressure CNG.
The supplementary equipment such as such as separator, cooler, separator-filter, drive motor, filling pump involved by equipment of the present invention all adopts existing conventional process techniques equipment.
For person of an ordinary skill in the technical field; can also make other changes in different forms on the basis of the above description; here exhaustive without the need to also giving all mode of executions, and thus the apparent change of amplifying out or variation be still among the protection domain of patent of the present invention.
Claims (7)
1. one kind is applicable to the compressor making method of coal-seam gas, it is characterized in that: the method is using the existing compressor being applicable to coal-seam gas as body, and in arranging between the multi-stage cylinder of compressor inside, pressure-off hydrophone is to realize completing dewatering process when carrying out compression process to coal-seam gas.
2. a kind of compressor making method being applicable to coal-seam gas according to claim 1, it is characterized in that: specific implementation process is, cylinder in whole compressor is divided into low-pressure cylinder series and high pressure air pressure series, and adopt two-shipper independently to drive low-pressure cylinder series and high pressure air pressure series, pressure-off hydrophone in arranging between low-pressure cylinder series and high pressure air pressure series is also together in series by pipeline one, be provided with pipeline two and this pipeline two is connected with compressor output end at middle pressure-off hydrophone outlet end, pipeline two forms coordination with high pressure cylinder series.
3. a kind of compressor making method being applicable to coal-seam gas according to claim 1, it is characterized in that: set gradually gas-liquid separator, piping filter, dust removal filter, knock out drum etc. in low-pressure cylinder series front end, realized coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing.
4. a kind of compressor making method being applicable to coal-seam gas according to claim 1, it is characterized in that: one-way valve two and stop valve two are set at the afterbody of pipeline two, the pipeline one between high pressure cylinder series and middle pressure-off hydrophone arranges one-way valve one and stop valve one.
5. one kind is applicable to the compressor of coal-seam gas, comprise the multi-stage cylinder series being positioned at compressor inside, multi-stage cylinder series is divided into low-pressure cylinder series (16) and high pressure cylinder series (15), it is characterized in that: middle pressure-off hydrophone (8) is arranged between low-pressure cylinder series (16) and high pressure cylinder series (15) and is also together in series by pipeline one (17), during pipeline two (18) connects, pressure-off hydrophone (8) outlet end also forms coordination with high pressure cylinder series (15).
6. a kind of compressor being applicable to coal-seam gas according to claim 5, it is characterized in that: safety check two (13) and stop valve two (14) are set at the afterbody of pipeline two (18), the pipeline one (17) between high pressure cylinder series (15) and middle pressure-off hydrophone (8) is arranged safety check one (9) and stop valve one (10).
7. a kind of compressor being applicable to coal-seam gas according to claim 5, it is characterized in that: set gradually gas-liquid separator (1), piping filter (2), dust removal filter (3), knock out drum (4) in low-pressure cylinder series (16) front end, realized coal-seam gas gas-liquid separation, contaminant filter, buffering voltage stabilizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619787.4A CN105089975A (en) | 2015-09-25 | 2015-09-25 | Compressor suitable for coalbed methane and manufacturing method of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510619787.4A CN105089975A (en) | 2015-09-25 | 2015-09-25 | Compressor suitable for coalbed methane and manufacturing method of compressor |
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| CN105089975A true CN105089975A (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510619787.4A Pending CN105089975A (en) | 2015-09-25 | 2015-09-25 | Compressor suitable for coalbed methane and manufacturing method of compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627087A (en) * | 2016-01-13 | 2016-06-01 | 庆城中旖新能源有限公司 | Comprehensive recycling system for high-pressure and low-pressure associated gas of gas field |
Citations (5)
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| CN201953618U (en) * | 2011-02-17 | 2011-08-31 | 重庆气体压缩机厂有限责任公司 | Medium-pressure dewatering equipment of coke oven gas compressor |
| CN202417889U (en) * | 2011-12-08 | 2012-09-05 | 四川金星压缩机制造有限公司 | Natural gas compressor and recovery system |
| US20130019633A1 (en) * | 2012-09-26 | 2013-01-24 | Pierce Jeffrey L | Method for production of a compressed natural gas equivalent from landfill gas and other biogases |
| CN203962350U (en) * | 2014-06-25 | 2014-11-26 | 四川金科环保科技有限公司 | Associating compressor for natural gas |
| CN204984773U (en) * | 2015-09-25 | 2016-01-20 | 贵州天然气能源投资股份有限公司 | Compressor suitable for coal bed gas |
-
2015
- 2015-09-25 CN CN201510619787.4A patent/CN105089975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201953618U (en) * | 2011-02-17 | 2011-08-31 | 重庆气体压缩机厂有限责任公司 | Medium-pressure dewatering equipment of coke oven gas compressor |
| CN202417889U (en) * | 2011-12-08 | 2012-09-05 | 四川金星压缩机制造有限公司 | Natural gas compressor and recovery system |
| US20130019633A1 (en) * | 2012-09-26 | 2013-01-24 | Pierce Jeffrey L | Method for production of a compressed natural gas equivalent from landfill gas and other biogases |
| CN203962350U (en) * | 2014-06-25 | 2014-11-26 | 四川金科环保科技有限公司 | Associating compressor for natural gas |
| CN204984773U (en) * | 2015-09-25 | 2016-01-20 | 贵州天然气能源投资股份有限公司 | Compressor suitable for coal bed gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105627087A (en) * | 2016-01-13 | 2016-06-01 | 庆城中旖新能源有限公司 | Comprehensive recycling system for high-pressure and low-pressure associated gas of gas field |
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Application publication date: 20151125 |