CN204173938U - A kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system - Google Patents
A kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system Download PDFInfo
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- CN204173938U CN204173938U CN201420647839.XU CN201420647839U CN204173938U CN 204173938 U CN204173938 U CN 204173938U CN 201420647839 U CN201420647839 U CN 201420647839U CN 204173938 U CN204173938 U CN 204173938U
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Abstract
The utility model relates to a kind of shale gas and returns sewer process and internal combustion unit tail gas waste heat recovering system.Solve existing treatment system exist when disposing of sewage process not thoroughly, can secondary pollution be produced, thus the technical problem of substantial pollution is caused to environment.Comprise plate-type heat exchanger, fore-warmer tank, fresh feed pump and recycle pump, horizontal-type evaporator, compressor, tail gas, the plate-type heat exchanger of internal combustion engine generator group are connected with fore-warmer tank, fore-warmer tank is connected with horizontal-type evaporator, compressor is connected with horizontal-type evaporator, and horizontal-type evaporator is connected with condensing crystallizer.A set of shale gas returns discharge opeing Sewage treatment systems, utilize function of mechanical steam recompression machine (MVR) technology, accomplish that whole system is brief, reliable, energy-conservation, the water of condensation that final output is clean and salt-pepper noise crystal, make full use of the tail gas preheating of supporting internal combustion engine generator group, to improve energy-saving effect and the operation life of system, whole system, in conjunction with automation design, can realize unmanned state.
Description
Technical field
The utility model relates to shale gas exploitation and returns discharge opeing Sewage treatment systems, especially adopts the exploitation of MVR system process shale gas to return discharge opeing sewage.
Background technology
Shale gas is as very important unconventional gas resources, developed rapidly in recent years in China, but a large amount of fracturing liquids inputted during drilling well can be discharged into earth's surface again, this part fracturing liquid contains a large amount of inorganic salt (mainly Repone K), organism (some auxiliary substances inputted during well-digging), calcium ions and magnesium ions and part heavy metal ion etc.If these return discharge opeing and do not process, will cause substantial pollution to environment, other process means existing are just by water and other component simple separation, then solidification treatment, this process means still can leave secondary pollution and a large amount of solid wastes, process not thorough.
Utility model content
In order to overcome shortcoming and the weak point of background technology, the utility model provides a kind of shale gas to return sewer process and internal combustion unit tail gas waste heat recovering system, solve existing treatment system exist when disposing of sewage process not thoroughly, can secondary pollution be produced, thus the technical problem of substantial pollution is caused to environment.
The technical solution of the utility model is: a kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system, comprise plate-type heat exchanger, fore-warmer tank, fresh feed pump and evaporation major circulatory system, described evaporation major circulatory system comprises the first recycle pump, horizontal-type evaporator, compressor, the tail gas of described supporting internal combustion engine generator group or other types waste heat gas pipeline, plate-type heat exchanger is connected with fore-warmer tank, described fore-warmer tank passes through fresh feed pump successively, first recycle pump is connected with horizontal-type evaporator, described compressor is connected with horizontal-type evaporator, described horizontal-type evaporator is connected with condensing crystallizer by the second recycle pump.
Also comprise condensation pump, one end of described condensation pump is connected with compressor, and the other end is connected with plate-type heat exchanger.
Described condensing crystallizer is connected with fore-warmer tank.
the utility model has following beneficial effect:utilize function of mechanical steam recompression machine (MVR) technology, accomplish that whole system is brief, reliable, energy-conservation, the water of condensation that final output is clean and salt-pepper noise crystal, make full use of the tail gas preheating of supporting internal combustion engine generator group, to improve energy-saving effect and the operation life of system, whole system, in conjunction with automation design, can realize unmanned state.
Accompanying drawing explanation
Accompanying drawing 1 is system flowchart of the present utility model.
Accompanying drawing 2 is structural representations of the present utility model.
In figure, plate-type heat exchanger 1, fore-warmer tank 2, fresh feed pump 3, the first recycle pump 4, horizontal-type evaporator 5, compressor 6, the second recycle pump 7, condensing crystallizer 8, condensation pump 9.
Embodiment
For accompanying drawing, embodiment of the present utility model is described further below:
As shown in the figure, a kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system, comprise plate-type heat exchanger 1, fore-warmer tank 2, fresh feed pump 3 and evaporation major circulatory system, described evaporation major circulatory system comprises the first recycle pump 4, horizontal-type evaporator 5 and compressor 6, described plate-type heat exchanger 1 is connected with fore-warmer tank 2, tail gas or the combustion gas of other types waste heat of described supporting internal combustion engine generator group enter fore-warmer tank 2, fore-warmer tank 2 is successively by fresh feed pump 7, first recycle pump 4 is connected with horizontal-type evaporator 5, described compressor 6 is connected with horizontal-type evaporator 5, described horizontal-type evaporator 5 is connected with condensing crystallizer 8 by the second recycle pump 7, described condensing crystallizer 8 is connected with fore-warmer tank 2.According to such scheme, utilize function of mechanical steam recompression machine (MVR) technology, accomplish that whole system is brief, reliable, energy-conservation, the water of condensation that final output is clean and salt-pepper noise crystal, make full use of the tail gas preheating of supporting internal combustion engine generator group, to improve energy-saving effect and the operation life of system, whole system, in conjunction with automation design, can realize unmanned state.During use, the utility model is intended to design a set of Sewage treatment systems, mainly for returning the sewage of discharge opeing after electrochemical treatment degraded, sewage is first through water of condensation preheating, again by tail gas or the other types waste heat gas-preheating of internal combustion engine generator group, stoste is fully preheating to boiling point under normal pressure in fore-warmer tank, to reach the object removing calcium ions and magnesium ions, enter into evaporation major circulatory system through fresh feed pump at circulation tube from fore-warmer tank, evaporation major circulatory system is made up of recycle pump, horizontal-type evaporator, compressor.Recycle pump drives feed liquid constantly to circulate in vaporizer tube side, compressor is then by evaporator evaporation secondary steam temperature-pressure out, and be again transported to vaporizer shell side as thermal source second stage employ, thus realize substantially not needing extraneous input energy also can keep continuing evaporation.When feed liquid circulating and evaporating is to saturated mode, feed liquid is discharged to condensation-crystallization groove, feed liquid is in condensation-crystallization groove natural cooling crystallization, and cooled mother liquor passes through liquid level difference natural back flow in fore-warmer tank.Salt crystal in crystallizer tank is deposited in bottom land, human at periodic intervals's cleaning at regular intervals.
Also comprise condensation pump 9, one end of described condensation pump 9 is connected with compressor 6, and the other end is connected with plate-type heat exchanger 1.Water vapour is condensation after heat exchange in horizontal heat exchanger, and condensed water of condensation is discharged by condensate pump, before discharge system is outer, first through water of condensation interchanger and feed liquid heat exchange, reclaims certain heat energy.
As shown in the figure, stock liquid is first through water of condensation interchanger and evaporation condensed water heat exchange, about improving temperature to 80 DEG C, then fore-warmer tank is entered, stock liquid in fore-warmer tank by the tail gas of internal combustion engine generator group or other types waste heat gas heating to 100 DEG C, at high operating temperatures, calcium ions and magnesium ions in stock liquid will with the isolated in form of incrustation scale out, fore-warmer tank design becomes easy to clean structure, with easy cleaning incrustation scale, stock liquid after heating is transported in evaporation circulating system through fresh feed pump, stock liquid is under the driving of recycle pump, circulating and evaporating in horizontal-type evaporator, the secondary steam be evaporated improves temperature and pressure after being compressed by vapour compressor, be transported to again in horizontal-type evaporator and re-use as thermal source, to ensure the continual and steady of evaporative process.On circulating line, continued the feed liquid of arranging outward after evaporation by discharging pump, feed liquid enters natural cooling crystallization in cooling crystallizer, crystallographic is deposited in water cooler, clear up a crystal at set intervals, uncrystallized feed liquid is back to fore-warmer tank again, gets back in system.
Whole system, by becoming clean distilled water and salt crystal after feed liquid process, can reach the recovery levels of technical grade.Because shale gas well is general all outside mountain is outside of the city, native system, in conjunction with automation design, can accomplish unmanned state.The energy consumption of system directly utilizes the shale gas gas-to electricity of shale gas well, COMPREHENSIVE CALCULATING, processes one ton of waste water and about consumes gas 15m.
Embodiment should not be considered as the restriction to utility model, but anyly done based on spirit of the present utility model
Improvement, all should within protection domain of the present utility model.
Claims (4)
1. a shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system, it is characterized in that: comprise plate-type heat exchanger (1), fore-warmer tank (2), fresh feed pump (3) and evaporation major circulatory system, described evaporation major circulatory system comprises the first recycle pump (4), horizontal-type evaporator (5) and compressor (6), described plate-type heat exchanger (1) is connected with fore-warmer tank (2), described fore-warmer tank (2) is successively by described fresh feed pump (3), first recycle pump (4) is connected with horizontal-type evaporator (5), described compressor (6) is connected with horizontal-type evaporator (5), described horizontal-type evaporator (5) is connected with condensing crystallizer (8) by the second recycle pump (7).
2. a kind of shale gas according to claim 1 returns sewer process and internal combustion unit tail gas waste heat recovering system, it is characterized in that: described fore-warmer tank (2) is for being connected with the tail gas of supporting internal combustion engine generator group.
3. a kind of shale gas according to claim 1 returns sewer process and internal combustion unit tail gas waste heat recovering system, it is characterized in that: also comprise condensation pump (9), one end of described condensation pump (9) is connected with compressor (6), and the other end is connected with plate-type heat exchanger (1).
4. a kind of shale gas according to claim 1 or 2 or 3 returns sewer process and internal combustion unit tail gas waste heat recovering system, it is characterized in that: described condensing crystallizer (8) is connected with fore-warmer tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647839.XU CN204173938U (en) | 2014-11-03 | 2014-11-03 | A kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420647839.XU CN204173938U (en) | 2014-11-03 | 2014-11-03 | A kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system |
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| CN204173938U true CN204173938U (en) | 2015-02-25 |
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| CN201420647839.XU Active CN204173938U (en) | 2014-11-03 | 2014-11-03 | A kind of shale gas returns sewer process and internal combustion unit tail gas waste heat recovering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917603A (en) * | 2017-04-29 | 2017-07-04 | 贵州大学 | A kind of heat recovery system that blowdown water process is returned for shale gas |
| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
-
2014
- 2014-11-03 CN CN201420647839.XU patent/CN204173938U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917603A (en) * | 2017-04-29 | 2017-07-04 | 贵州大学 | A kind of heat recovery system that blowdown water process is returned for shale gas |
| CN108217795A (en) * | 2017-11-28 | 2018-06-29 | 中石化石油工程技术服务有限公司 | Gas water evaporative crystallization processing unit with high salt |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065000 Industrial Road two, Chao Bai He Industrial Park, Dachang Hui Autonomous County, Langfang, Hebei Patentee after: Hebei Le Heng energy saving equipment Co., Ltd. Address before: 065000 Industrial Road two, Chao Bai He Industrial Park, Dachang Hui Autonomous County, Langfang, Hebei Patentee before: Hebei Le Heng chemical industry equipment Manufacturing Co., Ltd |
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| CP01 | Change in the name or title of a patent holder |