CN103527314B - A kind of overall gas combustion natural gas compressor multistage compression energy-saving system - Google Patents
A kind of overall gas combustion natural gas compressor multistage compression energy-saving system Download PDFInfo
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- CN103527314B CN103527314B CN201310489029.6A CN201310489029A CN103527314B CN 103527314 B CN103527314 B CN 103527314B CN 201310489029 A CN201310489029 A CN 201310489029A CN 103527314 B CN103527314 B CN 103527314B
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The present invention relates to a kind of for overall gas combustion natural gas compressor multistage compression energy-saving system, this system mainly comprises gas compressor set gas engine tail gas surplus energy utility system I and is separated with rock gas and heat-exchange system II, motor exhaust surplus energy utility system I is mainly converted into the kinetic energy of pneumatic motor motor exhaust high temperature heat and then drives chiller plant cooling tube to remit gas, rock gas be separated and heat-exchange system II be the initial gross separation of normal temperature gravitational separator after rock gas cool afterwards low temperature and is separated again, and be again separated after gas before entering one-level supercharging with supercharging after gas in heat exchanger, carry out exchange heat, and then enter stage separation device and carry out next stage supercharging.Undertaken just being separated by carrying out gas to manifold, cryogenic separation and stage separation can not only improve compressor bank working efficiency, reduce unit specific yield gas consumption energy saving, also can reduce hydrops in compression cylinder, improve the working life of unit compression cylinder and air inlet and exhaust valve.
Description
Technical field
The invention belongs to natural gas compressor power-saving technology and utilize field, relate to a kind of petrochemical industry supercharging, collect defeated use overall gas combustion natural gas compressor energy-saving system, overall gas combustion natural gas compressor is that gas engine and compressor share a bent axle, and compressor power is provided by gas engine.
Background technique
Reusing of energy source and energy conservation have become whole world question of common concern.In energy consuming equipment field, power-saving technology is mainly reflected in two aspects, and one is for treasuring energy saving and complementary energy recycling, and it two is increase work efficiency to reduce specific yield energy consumption power-saving technology.Wherein reduce to increase work efficiency the major embodiment that specific yield energy consumption is energy saving, the present invention utilizes Compressor Group complementary energy to recycle and gas engine exhaust heat-energy is converted into kinetic energy, then kinetic energy for improving unit working efficiency and then reducing the energy consumption of unit specific yield to reach the object of energy saving.
Overall gas combustion natural gas compressor is that the integrated type sharing a bent axle by gas engine and compressor becomes to prize supercharging collection transfer device, gas engine consumes combustion gas and provides power for compressor, and driven plunger acting is by low-pressure gas supercharging and by manifold output well station.Gas engine discharges the high-temperature tail gas of more than 380 DEG C, carries away a large amount of energy emission in air, if this portion of energy can fully recycle will save the very considerable energy.Gas compressor group is owing to containing liquid in gas in addition, unit efficiency will be caused lower, utilizing gas engine using waste heat from tail gas to freeze and improve the gas-liquid separation efficiency of pressurized gas, is a very effective energy conservation of compressor technology to the system works efficiency of raising compressor bank.Current heat of compressor utilizes technology to have people to carry out relevant theoretical research, in the consumption of reduction engine power, be also in conceptual phase, but improves the technology of unit working efficiency from the surplus energy utility of unit own not yet someone studies.
Summary of the invention
The object of this invention is to provide a kind of overall gas combustion natural gas compressor multistage compression energy-saving system, energy-conservation effect is reached, to solve high, the ineffective problem of this integrally-built reciprocal compressor energy consumption by improving unit working efficiency to the further separation of the impurity such as rock gas steam.
Basic principle of the present invention gas engine tail gas high temperature heat is converted into motor kinetic energy to drive the air inlet of chiller plant cooling unit, being separated further by unit air inlet cryogenic separation normal temperature being failed the impurity such as the part steam separated, improving compressor compresses efficiency and avoiding compression cylinder " liquid hammer " to damage cylinder body and air inlet and exhaust valve.It is multiple that overall gas combustion natural gas compressor exhaust heat-energy utilizes technology and device to have, the collection of high-temperature tail gas heat energy of the present invention and utilization exhaust heat-energy are converted to steam-energy by heat exchanging evaporator to pass to pneumatic motor and be converted into kinetic energy, drive chiller plant cooling wellhead manifold to carry out gas by the high speed rotating of pneumatic motor, by cooling wellhead manifold come gas carry out low temperature again separation and purification pressurized gas improve unit efficiency and working life.It is general in rock gas well head pressurizing processes flow process at the scene that only carrying out gas to wellhead manifold carries out normal temperature gravity separation, then compressor buffer tank and compression cylinder supercharging is entered, directly header is exported after supercharging, because before entering compressor compresses cylinder, gas normal-temperature is separated not thorough, the impurity such as a small amount of hydrogen sulfide, steam can be left, not only affect compressor boost efficiency and also in compression cylinder, cylinder body and air inlet and exhaust valve life-span can be affected for hydrops, thus to the gas before entering compression cylinder carry out cooling be separated to raising unit working efficiency and working life significant.
A kind of overall gas combustion natural gas compressor multistage compression energy-saving system of the present invention comprises gas engine tail gas surplus energy utility system I and is separated with rock gas and heat-exchange system II.Gas engine tail gas surplus energy utility system I is composed in series by gas engine 14, exhaust pipe line 15, heat exchanging evaporator 16, pneumatic motor 17 and chiller plant 18; Rock gas is separated and heat-exchange system II is composed in series by gravitational separator 2, cooling unit 3, cold catch pot 4, heat exchanger 5 and stage separation device 9.The working procedure of overall gas combustion natural gas compressor multistage compression energy saving technology is that the high-temperature tail gas that gas engine 14 is discharged enters heat exchanging evaporator 16 by the unified guiding of exhaust pipe line 15, carry out thermal energy collecting and steam energy be converted into pneumatic motor 17 kinetic energy drive chiller plant 18 cool the rock gas of manifold 1 after gravitational separator 2 initial gross separation, enter cold catch pot 4 by the cooled gas of cooling unit 3 and realize cryogenic separation, then heat exchanger 5 is entered, one-level air inlet knock out drum 6 and one stage of compression cylinder 7, the gas of discharging through primary outlet knock out drum 8 and low temperature carry out gas and carry out exchange heat in heat exchangers 5, heat exchanger 5 be by one-level supercharging after gas and cooled low temperature carry out gas and carry out exchange heat and improve one stage of compression intake temperature, avoid gas to cross the cold unit that affects normally to work, be separated further through stage separation device 9 after gas converting heat after one-level supercharging, then secondary inlet knock out drum 10 is entered, two-stage compression cylinder 11 and secondary exhaust knock out drum 12, the gas of discharging enters next stage supercharging or exports booster station by high pressure pipe joint 19, wherein one stage of compression cylinder 7, the compressed action of two-stage compression cylinder 11 piston has been driven by a crankshaft & connecting 13 shared with gas engine 14.
The beneficial effect of patent of the present invention is: the rock gas that the kinetic energy that the present invention utilizes gas engine tail gas complementary energy to be converted into pneumatic motor drives chiller plant cooling tube to remit, carry out temperature degree by reduction manifold and carry out cryogenic separation, the gas of a small amount of water vapour still contained after rock gas initial gross separation and other impurity is separated further, and then the working efficiency of compressor and the working life of compression cylinder can be improved.Its advantage is that (1) reduces temperature and carries out low temperature and be separated impurity such as can removing water vapor that rock gas carries further again, not only improves unit efficiency, and reduces " hydrops " in compression cylinder, reduce the infringement to cylinder body and valve; (2) gas engine tail gas surplus energy utility is come to the energy of compressor inlet air temperatures cooling, do not increase other energy ezpenditure; (3) rock gas that cryotronl is remitted is carried out one-level supercharging before with supercharging after the gas of temperature rise carry out exchange heat and normally work to avoid the too low unit that affects of intake temperature.
Accompanying drawing explanation
Fig. 1 is a kind of overall gas combustion natural gas compressor multistage compression energy-saving system schematic diagram.
Be labeled as in Fig. 1: manifold carrys out gas 1, gravitational separator 2, cooling unit 3, cold catch pot 4, heat exchanger 5, one-level air inlet knock out drum 6, one stage of compression cylinder 7, primary outlet knock out drum 8, stage separation device 9, secondary inlet knock out drum 10, two-stage compression cylinder 11, secondary exhaust knock out drum 12, crankshaft & connecting 13, gas engine 14, exhaust pipe line 15, heat exchanging evaporator 16, pneumatic motor 17, chiller plant 18, next stage compression or natural gas high pressure manifold export gas 19.
Embodiment
Below in conjunction with accompanying drawing, the present invention's overall gas combustion natural gas compressor multistage compression energy-saving system is described further.
The present invention is that the high-temperature tail gas surplus energy utility utilizing overall gas combustion gas compressor set gas engine to discharge carries out with by carrying out gas to manifold the power-economizing method that low temperature is separated to improve unit working efficiency again, mainly comprises machine set system gas engine tail gas surplus energy utility system I and is separated with rock gas and heat-exchange system II.Gas compressor set system gas engine tail gas surplus energy utility system I is composed in series by gas engine 14, exhaust pipe line 15, heat exchanging evaporator 16, pneumatic motor 17 and chiller plant 18; Rock gas is separated and heat-exchange system II is composed in series by gravitational separator 2, cooling unit 3, cold catch pot 4, heat exchanger 5 and stage separation device 9.Wherein the chiller plant 18 of gas engine surplus energy utility system I is separated with rock gas and is connected with the cooling unit 3 of heat-exchange system II, and the reciprocating compression acting of one stage of compression cylinder 7, two-stage compression cylinder 11 piston has been driven by a crankshaft & connecting 13 shared with gas engine 14.
The present invention's overall gas combustion natural gas compressor multistage compression energy-saving system is that exhaust heat-energy is converted to steam-energy by heat exchanging evaporator by gas engine tail gas high temperature heat, drive pneumatic motor high speed rotating, drive chiller plant cooling tube to remit gas again, remove rock gas moisture and impurity raising unit compression efficiency further by cold catch pot and avoid cylinder body " liquid hammer " to damage.On-the-spot natural gas boosting technological process generally just carrys out gas at wellhead manifold and realizes first separation by gravitational separator, enters compressor buffer tank and compression cylinder carries out supercharging, is directly exported by high pressure header after supercharging; Because before entering compression cylinder, gas normal-temperature is separated not thorough, the impurity such as a small amount of hydrogen sulfide, steam can be left, not only affect compressor boost efficiency also can in compression cylinder hydrops, affect cylinder body compression efficiency and air inlet and exhaust valve life-span, thus to manifold come gas 1 carry out low temperature be separated again to raising unit working efficiency and working life significant.Working procedure of the present invention is that the high-temperature tail gas that gas engine 14 is discharged enters into heat exchanging evaporator 16 by exhaust pipe line 15 is unified, the kinetic energy being pneumatic motor 17 thermal energy drives chiller plant 18 to cool the rock gas of manifold 1 after gravitational separator 2 initial gross separation, enter cold catch pot 4 after being cooled by cooling unit 3 to be separated the impurity such as steam and then to enter heat exchanger 5, one-level air inlet knock out drum 6 and one stage of compression cylinder 7, the gas of discharging from primary outlet knock out drum 8 and low temperature air inlet carry out exchange heat heat exchanger 5, heat exchanger 5 be by one-level supercharging after gas and cooled low temperature carry out gas and carry out exchange heat and improve one stage of compression cylinder intake temperature, cold gases affect unit was avoided normally to work, then by stage separation device 9, the gas after supercharging is separated further, then secondary inlet knock out drum 10 is entered, two-stage compression cylinder 11, secondary exhaust knock out drum 12, gas after supercharging enters next stage supercharging or by high pressure pipe joint 19 output well station.Wherein the reciprocating compression acting of one stage of compression cylinder 7, two-stage compression cylinder 11 piston has been driven by a crankshaft & connecting 13 shared with gas engine 14.
Below only just the know-why of the present invention program is described in conjunction with a kind of embodiment of overall gas combustion natural gas compressor multistage compression energy-saving system, can have multiple for carrying out subcooled driving mode by the rock gas after initial gross separation, this programme utilizes gas engine tail gas complementary energy reutilization technology to drive chiller plant work, also chiller plant 18 can be driven by overall gas combustion compressor common crankshaft or alternate manner such as electric energy etc., cooling unit 3, reach and gas is come to wellhead manifold carry out cooling low temperature and be separated again and improve unit efficiency and reduce the object of energy consumption.
Claims (4)
1. an overall gas combustion natural gas compressor multistage compression energy-saving system, it is characterized in that rock gas separation mainly provides motivational drive chiller plant to cool wellhead manifold by unit gas engine tail gas surplus energy utility system I with heat-exchange system II and carrys out gas (1), by the steam impurity contained in cold catch pot (4) further removing rock gas, to improve unit working efficiency, reduce specific yield gas consumption, gas engine surplus energy utility system I is separated with unit rock gas and is connected with the cooling unit of heat-exchange system II (3), one stage of compression cylinder (7), the reciprocating compression acting of two-stage compression cylinder (11) piston has been driven by a crankshaft & connecting (13) shared with gas engine (14).
2. one according to claim 1 overall gas combustion natural gas compressor multistage compression energy-saving system, it is characterized in that unit rock gas is separated with heat-exchange system II is be composed in series by gravitational separator (2), cooling unit (3), cold catch pot (4), heat exchanger (5) and stage separation device (9).
3. one according to claim 1 overall gas combustion natural gas compressor multistage compression energy-saving system, is characterized in that unit gas engine tail gas surplus energy utility system I is composed in series by gas engine (14), exhaust pipe line (15), heat exchanging evaporator (16), pneumatic motor (17) and chiller plant (18).
4. overall gas combustion natural gas compressor multistage compression energy-saving system according to claim 1, it is characterized in that heat exchanger (5) be supercharging after cryogenic separation before rock gas and one-level supercharging heat up after rock gas carry out exchange heat, the intake temperature making intake temperature reach compressor to specify.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310489029.6A CN103527314B (en) | 2013-10-18 | 2013-10-18 | A kind of overall gas combustion natural gas compressor multistage compression energy-saving system |
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| CN201310489029.6A CN103527314B (en) | 2013-10-18 | 2013-10-18 | A kind of overall gas combustion natural gas compressor multistage compression energy-saving system |
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| CN103527314A CN103527314A (en) | 2014-01-22 |
| CN103527314B true CN103527314B (en) | 2016-01-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453007A2 (en) * | 1990-03-23 | 1991-10-23 | Adviesbureau Amerconsult B.V. | Gas heating system |
| WO2002090726A2 (en) * | 2001-05-02 | 2002-11-14 | Praxair Technology, Inc. | Work recovery from process involving steam generation |
| CN201891477U (en) * | 2010-11-26 | 2011-07-06 | 中国重汽集团济南动力有限公司 | Exhaust afterheat utilization system for natural gas engine |
| JP2012007500A (en) * | 2010-06-23 | 2012-01-12 | Hino Motors Ltd | Exhaust heat recovery device of internal combustion engine |
| CN102493851A (en) * | 2011-12-22 | 2012-06-13 | 吉林大学 | Energy-saving technology utilizing device of integrated type natural gas compressor |
| CN102937086A (en) * | 2012-10-26 | 2013-02-20 | 西南石油大学 | Method for testing system efficiency of integrated gas reciprocating natural gas compressor set |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6729133B1 (en) * | 2003-02-03 | 2004-05-04 | Chapeau, Inc. | Heat transfer system for a co-generation unit |
-
2013
- 2013-10-18 CN CN201310489029.6A patent/CN103527314B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0453007A2 (en) * | 1990-03-23 | 1991-10-23 | Adviesbureau Amerconsult B.V. | Gas heating system |
| WO2002090726A2 (en) * | 2001-05-02 | 2002-11-14 | Praxair Technology, Inc. | Work recovery from process involving steam generation |
| JP2012007500A (en) * | 2010-06-23 | 2012-01-12 | Hino Motors Ltd | Exhaust heat recovery device of internal combustion engine |
| CN201891477U (en) * | 2010-11-26 | 2011-07-06 | 中国重汽集团济南动力有限公司 | Exhaust afterheat utilization system for natural gas engine |
| CN102493851A (en) * | 2011-12-22 | 2012-06-13 | 吉林大学 | Energy-saving technology utilizing device of integrated type natural gas compressor |
| CN102937086A (en) * | 2012-10-26 | 2013-02-20 | 西南石油大学 | Method for testing system efficiency of integrated gas reciprocating natural gas compressor set |
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