CN103335445B - System and method for utilizing gas-driven compressor waste heat - Google Patents
System and method for utilizing gas-driven compressor waste heat Download PDFInfo
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- CN103335445B CN103335445B CN201310280054.3A CN201310280054A CN103335445B CN 103335445 B CN103335445 B CN 103335445B CN 201310280054 A CN201310280054 A CN 201310280054A CN 103335445 B CN103335445 B CN 103335445B
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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Abstract
The invention discloses a system and method for utilizing gas-driven compressor waste heat. The system comprises a smoke-type lithium bromide refrigeration unit, a pipe shell type heat exchanger and a cooling device. Due to the fact that a first electric control valve and a second electric control valve are arranged on a burn-driving smoke pipeline, the two control valves are in mutual linkage, part or all of the waste heat of smoke is recycled, heat pollution to the environment is reduced, and meanwhile recycled heat is converted into cooling capacity to be used for reducing conveying cost of technological gas. Further, due to the fact that a cold water bypass regulating valve is arranged, temperature of natural gas which is conveyed to the outside can be controlled according to requirements. The system and method for utilizing the gas-driven compressor waste heat has the advantages that heat of the high-temperature smoke can be recycled to the maximum, heat emission is reduced, pollution to the environment is reduced, the heat value of the natural gas is fully utilized, energy utilizing efficiency is improved, the temperature of the natural gas which is conveyed to the outside is lowered, the amount of the natural gas which is conveyed to the outside is improved, and energy consumption of per unit of the natural gas which is conveyed to the outside is reduced.
Description
Technical field
The present invention relates to a kind of gas driven heat of compressor and utilize system and method.
Background technology
At present, the defeated Natural Gas of domestic length drives the UTILIZATION OF VESIDUAL HEAT IN of compressor station little, or is not used effectively at all, and high-temperature flue gas is directly discharged in air.
Usually, the capacity usage ratio of gas driven compressor is between 30-39%, and remaining most of heat emits with the form of high-temperature flue gas, general high-temperature flue-gas 460-520
0between C, normal operating temperature is 480-500
0c.If station is located in non-heating region, the high-temperature flue gas that generation is driven in combustion is do not carry out any recovery substantially; If station is located in northern area, general consideration arranges afterheat of hot water boiler and produces 95--70
0c heating hot water, but this part waste heat be utilized is less than 10% of whole fume afterheat.Therefore a large amount of high-temperature flue gas is directly discharged, and directly causes the thermal pollution of environment on the one hand, and being that a large amount of natural gas heat energy is not fully utilized on the other hand, is the huge waste of the energy.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of gas driven heat of compressor and utilize system and method, by arranging flue gas type lithium bromide cooling-water machine group, utilize the high-temperature flue gas of gas driven compressor outlet, produce the water at low temperature of 7 DEG C ~ 14 DEG C (also can regulate setting according to actual needs), water at low temperature carries out heat exchange by the high-temperature natural gas of 60 DEG C ~ 70 DEG C of shell-and-tube heat exchanger and compressor outlet, to reduce the temperature of outer defeated natural gas, improve outer displacement, reduce the energy consumption of gas transmission outside unit.
The technical solution adopted for the present invention to solve the technical problems is: a kind of gas driven heat of compressor utilizes system, comprises flue gas type BrLi chiller, shell-and-tube heat exchanger and cooling device; Flue gas from gas compressor group is divided into two-way, first electric control valve of leading up to directly enters tail gas funnel discharge, second electric control valve of separately leading up to enters flue gas type BrLi chiller, and the exhanst gas outlet then through flue gas type BrLi chiller enters tail gas funnel discharge; The low-temperature cold water of described flue gas type BrLi chiller output, successively by shell-and-tube heat exchanger, cold water circulation pump, then gets back to flue gas type BrLi chiller, forms the chilled water circuit circulatory system; The cooling fluid of flue gas type BrLi chiller, successively by cooling device, coolant recirculation pump, then gets back to flue gas type BrLi chiller, forms the coolant circuit circulatory system.
Present invention also offers a kind of gas driven heat of compressor Application way, comprise the steps:
When system starts, the first electric control valve is opened, and the second electric control valve is in closed condition; Along with improving constantly of gas driven compressor load, open the second electric control valve gradually, turn down the first electric control valve gradually, when the temperature of circulating chilled water pump intake reaches setting value simultaneously, stop adjustment two electric control valves, make two electric control valves be in stable open and-shut mode; The high-temperature flue gas of 500 DEG C of gas driven compressor discharge enters flue gas type BrLi chiller and carries out waste heat recovery, and after heat recovery, flue-gas temperature is down to 160 DEG C ~ 190 DEG C and is discharged through tail gas funnel; 7 DEG C ~ 14 DEG C low-temperature cold waters of flue gas type BrLi chiller output enter shell-and-tube heat exchanger by cold water circulation pump simultaneously, heat exchange is carried out with 60 DEG C ~ 70 DEG C high-temperature natural gas from gas driven compressor outlet, outer defeated after high-temperature natural gas being cooled to design temperature; The cooling fluid of flue gas type BrLi chiller, successively by cooling device, coolant recirculation pump, then gets back to flue gas type BrLi chiller.
Compared with prior art, good effect of the present invention is: by arranging the first electric control valve and the second electric control valve on gas driven compressor flue, two control valves link each other: when system starts, first electric control valve is opened, and the second electric control valve is in closed condition; Along with the load of gas driven compressor improves gradually, progressively close the first electric control valve, open the second electric control valve, and final realization is reclaimed the full dose of flue gas or the waste heat of partial amount, to greatest extent whole waste heat can be reclaimed as required, reduce the thermal pollution to environment, the heat of recovery is converted to the outer throughput rate of cold for increasing process gas simultaneously; The present invention is also by arranging cold water bypass valve, and the temperature that can realize external defeated natural gas as required controls.
After adopting system and method for the present invention, when increasing a small amount of investment, the heat of high-temperature flue gas can be reclaimed to greatest extent, reducing hot driving, alleviating the pollution to environment; Take full advantage of the calorific value of natural gas, improve efficiency of energy utilization; Reduce the temperature of outer defeated natural gas, improve outer throughput rate, reduce the energy consumption (operating cost) of gas transmission outside unit.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the process chart that gas driven heat of compressor utilizes system.
Detailed description of the invention
A kind of gas driven heat of compressor utilizes system, as shown in Figure 1, comprise: flue gas type BrLi chiller 1, shell-and-tube heat exchanger 2, cold water circulation pump 3, cooling device 4, cooling fluid (water) circulating pump 5, tail gas funnel 6, first electric control valve 7, second electric control valve 8, cold water bypass valve 9, first cooling fluid (water) bypass valve 10, second cooling fluid (water) bypass valve 11 etc., wherein:
Flue gas from gas compressor group is divided into two-way, one tunnel directly enters tail gas funnel 6 by the first electric control valve 7 and discharges, another road enters flue gas type BrLi chiller 1 by the second electric control valve 8, then enters tail gas funnel 6 through the exhanst gas outlet of flue gas type BrLi chiller 1 and discharges; The low-temperature cold water of flue gas type BrLi chiller 1 output, successively by shell-and-tube heat exchanger 2, cold water circulation pump 3, then gets back to flue gas type BrLi chiller 1 through cooling water inlet, forms the chilled water circuit circulatory system; Between the cooling water inlet and outlet of the shell-and-tube heat exchanger 2 of the chilled water circuit circulatory system, be also arranged in parallel cold water bypass, cold water bypass has been provided with cold water bypass valve 9; Cooling fluid (water) passes through cooling device 4, cooling fluid (water) circulating pump 5 successively from the cooling liquid outlet of flue gas type BrLi chiller 1, then get back to flue gas type BrLi chiller 1 through cooling fluid (water) import, form cooling fluid (water) loop circulation system.Between the cooling water outlet and cooling fluid (water) import of flue gas type BrLi chiller 1, be provided with the second cooling fluid (water) bypass valve 11, between cooling fluid (water) outlet and the entrance of cold water circulation pump 3 of flue gas type BrLi chiller 1, be provided with the first cooling fluid (water) bypass valve 10.
Described cooling device 4 can be dry air cooled heat exchanger or cooling tower.
Present invention also offers a kind of gas driven heat of compressor Application way:
When system starts, the first electric control valve 7 is opened, and the second electric control valve 8 is in closed condition, along with the load of gas driven compressor improves gradually, open the second electric control valve gradually, turn down the first electric control valve gradually simultaneously, after defeated process gas progressively reaches design temperature outside (when namely the temperature of cold water circulation pump 3 entrance reaches setting value), stop adjustment two electric control valves, two electric control valves are made to be in stable open and-shut mode, that is: the second electric control valve 8 is in stable open mode (can all or part ofly as required open), first electric control valve 7 is in stable closed condition (with all or part of cut out in linkage of the second electric control valve 8).Residual neat recovering system improves constantly along with gas driven compressor load and progressively reaches steady operational status, the high-temperature flue gas of 500 DEG C of gas driven compressor discharge progressively enters flue gas type BrLi chiller 1, carry out waste heat recovery, after heat recovery, flue-gas temperature is down to 160 DEG C ~ 190 DEG C and is discharged through tail gas funnel 6; The low-temperature cold water of flue gas type BrLi chiller 1 output is (generally between 7 DEG C ~ 14 DEG C simultaneously, also can regulate as required) enter shell-and-tube heat exchanger 2 by cold water circulation pump 3, carry out heat exchange with 60 DEG C ~ 70 DEG C high-temperature natural gas of gas driven compressor outlet, high-temperature natural gas is cooled to after requiring temperature or ground temperature outer defeated.Cooling circulation liquid (water) carries out closed or opened refrigerating cycle by cooling fluid (water) circulating pump 5, and cooling device 4 region residing for engineering is different, and dry air cooled heat exchanger is selected in water-deficient area, and (closing) formula cooling tower is selected out in plentiful area, water source.Cooling device 4(dry air cooled heat exchanger or cooling tower) adopt VFC, regulate the running frequency of blower fan according to the change of cooling fluid (water) temperature, reduce consumption of electric energy to greatest extent.
By arranging cold water bypass valve 9, the temperature realizing external defeated natural gas controls.
Whole system is at summer and transition season, and the first cooling fluid (water) bypass valve 10 and the second cooling fluid (water) bypass valve 11 are closed, and flue gas type BrLi chiller 1, cold water circulating system, cooling fluid (water) circulatory system are all in running status.Now the high-temperature flue gas waste heat of gas driven compressor as much as possible is recovered, and is used to refrigeration, and this cold is used for cooling gas driven compressor high-temperature natural gas out.
In the winter time, open the first cooling fluid (water) bypass valve 10 and the second cooling fluid (water) bypass valve 11, flue gas type BrLi chiller 1, cold water circulation pump 3 are out of service, cooling fluid (water) circulating pump 5, cooling device 4(dry air cooled heat exchanger or cooling tower) and shell-and-tube heat exchanger 2 work, by intermediate medium (i.e. cooling fluid (water)), Cryogenic air is utilized to realize the cooling of outer defeated natural gas.
Claims (4)
1. a gas driven heat of compressor Application way, is characterized in that: comprise the steps:
When system starts, the first electric control valve is opened, and the second electric control valve is in closed condition; Along with improving constantly of gas driven compressor load, open the second electric control valve gradually, turn down the first electric control valve gradually, when the temperature of circulating chilled water pump intake reaches setting value simultaneously, stop adjustment two electric control valves, make two electric control valves be in stable open and-shut mode; The high-temperature flue gas of 500 DEG C of gas driven compressor discharge enters flue gas type BrLi chiller and carries out waste heat recovery, and after heat recovery, flue-gas temperature is down to 160 DEG C ~ 190 DEG C and is discharged through tail gas funnel; 7 DEG C ~ 14 DEG C low-temperature cold waters of flue gas type BrLi chiller output enter shell-and-tube heat exchanger by cold water circulation pump simultaneously, heat exchange is carried out with 60 DEG C ~ 70 DEG C high-temperature natural gas from gas driven compressor outlet, outer defeated after high-temperature natural gas being cooled to design temperature; The cooling fluid of flue gas type BrLi chiller, successively by cooling device, coolant recirculation pump, then gets back to flue gas type BrLi chiller.
2. gas driven heat of compressor Application way according to claim 1, is characterized in that: described cooling fluid carries out closed or opened refrigerating cycle by coolant recirculation pump.
3. gas driven heat of compressor Application way according to claim 1, is characterized in that: in water-deficient area, and described cooling device is dry air cooled heat exchanger, the plentiful area at water source, and described cooling device is open type or closed cooling tower.
4. gas driven heat of compressor Application way according to claim 1, is characterized in that: described cooling device adopts VFC.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310280054.3A CN103335445B (en) | 2013-07-05 | 2013-07-05 | System and method for utilizing gas-driven compressor waste heat |
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| CN201310280054.3A CN103335445B (en) | 2013-07-05 | 2013-07-05 | System and method for utilizing gas-driven compressor waste heat |
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| CN103335445B true CN103335445B (en) | 2015-06-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716325A (en) * | 2016-03-16 | 2016-06-29 | 碧海舟（北京）节能环保装备有限公司 | Natural gas compressor conveying and refrigerating system |
| CN107339687B (en) * | 2016-12-30 | 2019-09-06 | 上海晟煜科技有限公司 | It is a kind of to utilize gas compressor waste heat for station area's heating technique |
| CN106958495B (en) * | 2017-04-13 | 2019-08-27 | 中煤科工集团重庆研究院有限公司 | Method for generating power by using low-concentration gas of coal mine |
| CN110260698B (en) * | 2019-05-20 | 2024-03-05 | 华电电力科学研究院有限公司 | Device and method for reducing heat pollution of distributed energy station of gas internal combustion engine |
| CN111005792B (en) * | 2019-10-09 | 2021-02-26 | 中石化石油机械股份有限公司研究院 | Exhaust gas waste heat utilization system of fuel-drive compressor unit engine |
| CN114870579A (en) * | 2022-05-16 | 2022-08-09 | 江苏新世纪江南环保股份有限公司 | Method and device for recovering waste heat of ammonia desulphurization and decarbonization system |
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| CN1536294A (en) * | 2003-04-11 | 2004-10-13 | 清华大学 | Heat pump type heat and electricity combined supply system by using internal combustion engine as power |
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| CN102350432A (en) * | 2011-08-08 | 2012-02-15 | 南京大学 | Energy comprehensive utilization system for solid waste processing based on arc plasma |
| CN202194726U (en) * | 2011-08-16 | 2012-04-18 | 上海申能能源服务有限公司 | Distributed cooling-heating power combined supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090031999A1 (en) * | 2007-08-02 | 2009-02-05 | Donald Charles Erickson | Charge air chiller |
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- 2013-07-05 CN CN201310280054.3A patent/CN103335445B/en active Active
Patent Citations (4)
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| CN1536294A (en) * | 2003-04-11 | 2004-10-13 | 清华大学 | Heat pump type heat and electricity combined supply system by using internal combustion engine as power |
| CN1536293A (en) * | 2003-04-11 | 2004-10-13 | 清华大学 | Dual-section heat pump type heat-electricity combined supply system by using gas turbine as power |
| CN102350432A (en) * | 2011-08-08 | 2012-02-15 | 南京大学 | Energy comprehensive utilization system for solid waste processing based on arc plasma |
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Effective date of registration: 20180110 Address after: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee after: China Petroleum Engineering Construction Co Ltd Address before: 610041 Chengdu high tech Zone, Sichuan province sublimation Road No. 6 Patentee before: Engineering Design Co., Ltd., China Petroleum Group |
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Effective date of registration: 20210209 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Address before: No. 6, Sichuan hi tech Zone, sublime Road, Chengdu, Sichuan Patentee before: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. |
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