CN107014104A - Waste heat cooling and mechanical combined dewatering device - Google Patents
Waste heat cooling and mechanical combined dewatering device Download PDFInfo
- Publication number
- CN107014104A CN107014104A CN201710239208.2A CN201710239208A CN107014104A CN 107014104 A CN107014104 A CN 107014104A CN 201710239208 A CN201710239208 A CN 201710239208A CN 107014104 A CN107014104 A CN 107014104A
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- CN
- China
- Prior art keywords
- gas
- dehydration device
- waste heat
- heat exchanger
- refrigeration unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 76
- 230000018044 dehydration Effects 0.000 claims abstract description 67
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 67
- 238000010521 absorption reaction Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000005057 refrigeration Methods 0.000 claims description 32
- 230000005611 electricity Effects 0.000 claims description 26
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 15
- 239000003546 flue gas Substances 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 16
- 229940059936 lithium bromide Drugs 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/06—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a waste heat cooling and mechanical combined dehydration device, which comprises a heat exchanger for condensing gas, a post dehydration device for dehydrating the condensed gas, a gas generator set for generating power by using the dehydrated gas and an absorption type refrigerating unit for refrigerating by using smoke discharged by the gas generator set.
Description
Technical field
The present invention relates to low concentration coal-bed gas power field, specifically a kind of waste heat cooling and mechanically combining dehydration device.
Background technology
At present, there is the problem of Homes Using TV is low, generating efficiency is low in China's coal bed gas power generation project.And influence generating set to open
One main cause of probability and generating efficiency is exactly the presence (the particularly water of free state) of moisture content in coal bed gas source of the gas, domestic
The dehydration device overwhelming majority installed in gas electricity station air delivering pipeline is all single mechanical dehydration, such as whirlwind dehydration and gravity
Formula is dehydrated；Also have using electricity refrigeration to gas cooling and dewatering mode；Gas electricity unit tail gas is most of directly to be discharged.It is existing
Single mechanical gas dehydrating effect is poor, and upgrading effect is undesirable；It is larger using electric refrigeration cool-down dehydration power load, it is comprehensive
Energy consumption is higher；Gas electricity unit exhaust temperature between 450 DEG C to 550 DEG C, direct exhaust emission environment and cause the energy wave
Take.
Accordingly, it would be desirable to it is a kind of using gas UTILIZATION OF VESIDUAL HEAT IN and mechanically combining dehydration technique and equipment, utilize generating set tail
Gas waste heat carries out deep dehydration to low concentration coal-bed gas, improves generating set Homes Using TV and generating efficiency.
The content of the invention
In view of this, the purpose of the present invention is to overcome defect of the prior art to use gas UTILIZATION OF VESIDUAL HEAT IN there is provided one kind
With mechanically combining dehydration technique and equipment, deep dehydration is carried out to low concentration coal-bed gas using generating set waste heat from tail gas, improved
Generating set Homes Using TV and generating efficiency.
The present invention waste heat cooling with mechanically combining dehydration device, including for device in Gas is condensed heat exchanger,
For the rear dehydration device being dehydrated to condensed device in Gas, the gas electricity generated electricity using the gas after dehydration
The absorption refrigeration unit that unit and the flue gas discharged using the gas electricity unit are freezed；The heat exchanger passes through cold
Waterpipe receives the recirculated cooling water that the absorption refrigeration unit is produced；The rear dehydration device air inlet is connected to described change
Hot device exhaust outlet, rear dehydration device exhaust outlet is connected to the inlet end of the gas electricity unit, the gas electricity unit
Exhanst gas outlet is connected to the air inlet of the absorption refrigeration unit；
The waste heat cooling of the present invention also includes being used to enter to entering the device in Gas before heat exchanger with mechanically combining dehydration device
The preceding dehydration device of row dehydration, the exhaust outlet of the preceding dehydration device is connected to the air inlet of the heat exchanger；
Further, the absorption refrigeration unit is BrLi chiller；
Further, the heat exchanger is shell-and-tube methane gas heat exchanger；
Waste heat cooling and the mechanically combining dehydration device of the present invention also includes automatic control system；The automatic control system
Including the water content detecting instrument being arranged in the gas pipeline between the rear dehydration device and generating set and for receiving
The parameter of the water content detecting instrument collection and the controller for controlling the absorption refrigeration unit refrigerating capacity；
Further, set in the flue between the exhanst gas outlet of the generating set and absorption refrigeration unit air inlet
There is the electric gas check that aperture control is carried out by the controller；
Further, the preceding dehydration device and rear dehydration device are mechanical dehydration device.
The beneficial effects of the invention are as follows：Waste heat cooling and the mechanically combining dehydration device of the present invention, before device in Gas is introduced into
Dehydration device removes aqueous water, enters back into cooling heat exchanger cooling, cooling heat exchanger, heat exchanger are directly entered compared to device in Gas
Required cold is substantially reduced；Condensed device in Gas is dehydrated by rear dehydration device, to remove the condensation in device in Gas
Water, is then passed through gas electricity unit by device in Gas and is generated electricity, and the flue gas of generating set discharge is directly entered refrigeration unit, profit
Absorbent solution (lithium-bromide solution) is heated as thermal source with flue gas, entering waste heat boiler compared to flue gas is made hot water
Or saturated vapor enters back into refrigeration unit, reduced using the gas electricity equipment investment of the dehydration device of the present invention, refrigeration unit
Efficiency is improved；Refrigeration unit is entered using flue gas cold water is made, cold water is produced compared to electricity, effectively using residual heat resources,
Power load is reduced, comprehensive energy consumption is reduced.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is structural representation of the invention.
Embodiment
Fig. 1 is structural representation of the invention；As illustrated, the cooling of the present embodiment waste heat and mechanically combining dehydration device bag
Include the rear dehydration dress including the heat exchanger 3 for being condensed to device in Gas, for being dehydrated to condensed device in Gas
The gas electricity unit 5 for put 4, being generated electricity using the gas after dehydration and the flue gas discharged using the gas electricity unit 5
The absorption refrigeration unit 2 freezed；The heat exchanger 3 receives the absorption refrigeration unit 2 by cold water pipes and produced
Recirculated cooling water；The air inlet of rear dehydration device 4 is connected to the exhaust outlet of heat exchanger 3, and the rear exhaust outlet of dehydration device 4 connects
The inlet end of the gas electricity unit 5 is connected to, the exhanst gas outlet of the gas electricity unit 5 is connected to the absorption refrigeration
The air inlet of unit 2；The waste heat cooling and mechanically combining dehydration device of the present embodiment, dehydration device 1 takes off before device in Gas is introduced into
Except aqueous water, enter back into cooling heat exchanger 3 and cool, condensed device in Gas is dehydrated by rear dehydration device 4, with removal watt
Condensed water in this gas, is then passed through gas electricity unit 5 by device in Gas and is generated electricity, and the flue gas that generating set 5 is discharged is direct
Into refrigeration unit 2, absorbent solution (lithium-bromide solution) is heated as thermal source using flue gas, entered compared to flue gas
Hot water is made in waste heat boiler or saturated vapor enters back into refrigeration unit 2, using the gas electricity equipment of the dehydration device of the present invention
Investment is reduced, and the efficiency of refrigeration unit 2 is improved；Cold water is made into refrigeration unit 2 using flue gas, produced compared to electricity cold
Water, effectively using residual heat resources, reduces power load, reduces comprehensive energy consumption.
The waste heat cooling of the present embodiment also includes being used for entering the device in Gas before heat exchanger 3 with mechanically combining dehydration device
The preceding dehydration device 1 being dehydrated, the exhaust outlet of the preceding dehydration device 1 is connected to the air inlet of the heat exchanger 3；Compared to
Device in Gas is directly entered heat exchanger 3, the cold needed for the heat exchanger 3 of the dehydration device of the present embodiment is substantially reduced.
In the present embodiment, the absorption refrigeration unit 2 is BrLi chiller 2, lithium bromide refrigerator lithium bromide
The aqueous solution is working medium, and its reclaimed water is refrigerant, and lithium bromide is absorbent.Lithium-bromide absorption-type refrigerating machine because being refrigerant with water,
Evaporating temperature can only be used to the apparatus of air conditioning and prepare the cold water of production process more than 0 DEG C.This refrigeration machine can use low
Water vapour or more than 75 DEG C of hot water are pressed as thermal source, the flue gas in the present embodiment by the use of the discharge of generating set 5 is right as thermal source
Lithium bromide weak solution in generator is heated, and concentrates lithium-bromide solution, so as to effectively utilize residual heat resources, reduces electricity consumption
Load, reduces comprehensive energy consumption.
In the present embodiment, the heat exchanger 3 is shell-and-tube methane gas heat exchanger 3；Shell-and-tube heat exchanger 3 is also known as shell and tube
Heat exchanger 3, be to close the wall restrained in the housing as the dividing wall type heat exchanger 3 of heat-transfer area, this structure of heat exchanger 3 compared with
Simply, operate reliable.
Waste heat cooling and the mechanically combining dehydration device of the present invention also includes automatic control system；The automatic control system
Including the water content detecting instrument being arranged in the gas pipeline between the rear dehydration device 4 and generating set 5 and for connecing
Receive the parameter of the water content detecting instrument collection and control the controller of the refrigerating capacity of absorption refrigeration unit 2, automatically control
System is measured using water content detecting instrument to gas water content, in system operation, and the device in Gas after measurement dehydration is aqueous
Amount, adjusts the flue gas air inflow of refrigeration unit 2, regulation cold water supply and return water temperature and flow, waste heat cooling is taken off with mechanically combining
Water installations operate in optimum condition.
In the present embodiment, the fume pipe between the exhanst gas outlet and the air inlet of absorption refrigeration unit 2 of the generating set 5
The electric gas check that aperture control is carried out by the controller is provided with road, according to gas tolerance and water content, regulation cold water is supplied
Return water temperature and flow, adjust the rotating speed of water supply pump, to change the circular flow of cold water, meet the refrigeration capacity requirement of heat exchanger 3,
Electric gas check is installed in the porch of refrigeration unit 2, by adjusting flue gas valve opening, adjusts flue gas flow.
In the present embodiment, the preceding dehydration device 1 and rear dehydration device 4 are mechanical dehydration device, mechanical dehydration dress
Install and be calculated as " deflection plate+silk screen " Combined separator, its dewatering efficiency is high and cost is relatively low.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this
Among the right of invention.
Claims (7)
1. a kind of waste heat cooling and mechanically combining dehydration device, it is characterised in that：Including for changing for being condensed to device in Gas
Hot device, for the rear dehydration device being dehydrated to condensed device in Gas, watt generated electricity using the gas after dehydration
The absorption refrigeration unit that this generating set and the flue gas discharged using the gas electricity unit are freezed；
The heat exchanger receives the recirculated cooling water that the absorption refrigeration unit is produced by cold water pipes；
The rear dehydration device air inlet is connected to the heat exchanger exhaust outlet, and rear dehydration device exhaust outlet is connected to the gas
The inlet end of generating set
The exhanst gas outlet of the gas electricity unit is connected to the air inlet of the absorption refrigeration unit.
2. waste heat cooling according to claim 1 and mechanically combining dehydration device, it is characterised in that：Also include being used for entering
Enter the preceding dehydration device that the device in Gas before heat exchanger is dehydrated, the exhaust outlet of the preceding dehydration device is connected to the heat exchanger
Air inlet.
3. waste heat cooling according to claim 2 and mechanically combining dehydration device, it is characterised in that：The absorption refrigeration
Unit is BrLi chiller.
4. waste heat cooling according to claim 3 and mechanically combining dehydration device, it is characterised in that：The heat exchanger is pipe
Shell-type methane gas heat exchanger.
5. waste heat cooling according to claim 4 and mechanically combining dehydration device, it is characterised in that：Also include automatically controlling
System；
The automatic control system is aqueous in the gas pipeline between the rear dehydration device and generating set including being arranged at
Measure detector and for receiving the parameter of the water content detecting instrument collection and controlling the absorption refrigeration unit refrigerating capacity
Controller.
6. waste heat cooling according to claim 5 and mechanically combining dehydration device, it is characterised in that：The generating set
It is provided with flue between exhanst gas outlet and absorption refrigeration unit air inlet and aperture control is carried out by the controller
Electric gas check.
7. waste heat cooling according to claim 6 and mechanically combining dehydration device, it is characterised in that：The preceding dehydration device
It is mechanical dehydration device with rear dehydration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710239208.2A CN107014104A (en) | 2017-04-13 | 2017-04-13 | Waste heat cooling and mechanical combined dewatering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710239208.2A CN107014104A (en) | 2017-04-13 | 2017-04-13 | Waste heat cooling and mechanical combined dewatering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107014104A true CN107014104A (en) | 2017-08-04 |
Family
ID=59445734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710239208.2A Pending CN107014104A (en) | 2017-04-13 | 2017-04-13 | Waste heat cooling and mechanical combined dewatering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107014104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717032A (en) * | 2022-04-06 | 2022-07-08 | 中煤科工集团重庆研究院有限公司 | Low-concentration coal bed gas power generation efficiency improving system and method |
| CN114774173A (en) * | 2022-04-06 | 2022-07-22 | 中煤科工集团重庆研究院有限公司 | Low-concentration gas source quality adjusting system and method |
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| CN109458320A (en) * | 2018-12-21 | 2019-03-12 | 四川翼源通用设备有限公司 | CNG gas station compressor assembly |
| CN209260028U (en) * | 2018-10-22 | 2019-08-16 | 湖南优卓牧业有限公司 | A kind of biogas comprehensive utilization system applied to dairy cow farm |
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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 |
| CN102383868A (en) * | 2010-08-30 | 2012-03-21 | 刘俊德 | Method and device for comprehensively utilizing energy of high-pressure natural gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114717032A (en) * | 2022-04-06 | 2022-07-08 | 中煤科工集团重庆研究院有限公司 | Low-concentration coal bed gas power generation efficiency improving system and method |
| CN114774173A (en) * | 2022-04-06 | 2022-07-22 | 中煤科工集团重庆研究院有限公司 | Low-concentration gas source quality adjusting system and method |
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Application publication date: 20170804 |