CN204689811U - A kind of preliminary water treatment system for gasification - Google Patents
A kind of preliminary water treatment system for gasification Download PDFInfo
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- CN204689811U CN204689811U CN201520353912.7U CN201520353912U CN204689811U CN 204689811 U CN204689811 U CN 204689811U CN 201520353912 U CN201520353912 U CN 201520353912U CN 204689811 U CN204689811 U CN 204689811U
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Abstract
The utility model discloses a kind of preliminary water treatment system for gasification, belong to water treatment field, comprise middle pressure flash tank, low pressure flash chamber, vacuum flasher, vacuum flashing separating tank, middle pressure flash separation tank and deoxygenator.Described middle pressure flash tank bottom liquid outlet is connected with low pressure flash chamber upper entrance, described low pressure flash chamber bottom liquid outlet is connected with vacuum flasher upper entrance, the outlet of low pressure flash chamber head gas is connected with deoxygenator entrance, and described vacuum flasher pneumatic outlet is connected with vacuum flashing separating tank middle and upper part entrance by vacuum flashing water cooler; Described middle pressure flash drum overhead outlet is connected with middle pressure flash separation tank entrance by grey water heater, middle pressure flash cooler, and middle pressure flash separation pot bottom outlet is connected with deoxygenator.The utility model has the cost that economizes on resources, to environmental benefits, and the maximized feature of resource.
Description
Technical field
The utility model belongs to water treatment field, is specifically related to a kind of preliminary water treatment system for gasification.
Background technology
Coal is one of main fossil energy of China, in China's energy production structure, occupy considerable status, and in current energy consumption structure at different levels, coal consumption accounts for 2/3 of total amount consumed.World petroleum resource is in short supply, makes the development trend of Coal Chemical Industry petroleum replacing chemical industry day by day rapid.Modern New Coal Chemical Industry is to produce the product of clean energy and alternative petrochemical complex, and it represents technology shell, Texaco, GSP, space flight stove etc.In these coal gasification apparatus, because many places produce trade effluent as slag bath system hydrocyclone, gasification system Quench tank, the hydrocyclone washing workshop section and washing tower etc., and trade effluent contains solid and gas dissolved, in coal coal gasification apparatus, be all provided with preliminary water treatment system.
For the preliminary water treatment device of Shell Coal Gasification, Shell Coal Gasification carries out preliminary stripping and process to the waste water that device discharges.The recirculated water washing system from Quench slag removing system, synthetic gas is the recirculated water being rich in sour gas, is again the grey pulp-water that solid content (i.e. suspended substance in water comprises unburn fine breeze, coal ash, tiny cinder completely) is higher.Its preliminary water treatment system comprises acid mortar stripping and pulp concentration system two portions, can be divided into two steps: the first step is that acid mortar stripping system comprises acid mortar flash distillation and stripping, and it carries out in two flash tanks and acid mortar stripping tower.The discharge water washing system from Quench slag removing system, synthetic gas enters two preliminary flash distillations of flash tank respectively, and flash tank is connected with sour torch house steward, and the acid gas flashed off enters flare system; Mud buck after flash distillation is sent into from top and middle part respectively in acid mortar stripping tower to slip through acid mortar at the bottom of tank, the temperature of stripping tower controls at 135 ~ 140 DEG C, pressure-controlling is at 0.18 ~ 0.20MPa, enter two strands of sewage in tower and the low-pressure steam counter current contact on filling batch added from tower bottom, after carrying out mass transfer and heat transfer, CO
2, H
2s, NH
3, the sour gas such as HCN, HCl by stripping out, enter flare system; Second step is that the recirculated water after stripping is joined clarifying tank with the recirculated water come from slag dewatering tank, in clarifying tank, add flocculation agent simultaneously, its suspended solid is made to concentrate, grow up, precipitate, realize solid-liquor separation, clean water overflows from clarifying tank and flows into overflow groove, then recycles by being pumped into distribution system.Bottom mortar out continues concentrated, and form mortar cake finally by vacuum band-type filter machine, solid content reaches 50%, and this filter cake is finally back to feed coal system recoveries and utilizes.
Its preliminary water treatment system flow process is comparatively complicated, and cost is higher, and not only energy recovery is incomplete, and need consume more energy.
Utility model content
The purpose of this utility model is: the shortcoming overcoming prior art, provides one to economize on resources cost, to environmental benefits, and the maximized preliminary water treatment system for gasification of resource.
The purpose of this utility model is realized by following technical proposals:
A kind of preliminary water treatment system for gasification, comprise middle pressure flash tank, low pressure flash chamber, vacuum flasher, vacuum flashing separating tank, middle pressure flash separation tank and deoxygenator, described middle pressure flash tank gray water outlet is connected with low pressure flash chamber grey water inlet, described low pressure flash chamber gray water outlet is connected with vacuum flasher grey water inlet, the flashed vapour outlet of low pressure flash chamber is connected with deoxygenator, and described vacuum flasher flashed vapour outlet is connected with vacuum flashing separating tank flashed vapour entrance; Described middle pressure flash tank flashed vapour outlet is connected with middle pressure flash separation tank flashed vapour entrance, and middle pressure flash separation tank liquid exit is connected with deoxygenator.
As selection, also comprise grey water heater and middle pressure flash cooler, described middle pressure flash tank flashed vapour outlet is connected with middle pressure flash separation tank flashed vapour entrance by described grey water heater, middle pressure flash cooler.
As further selection, also comprise washing tower, described deoxygenator gray water outlet is connected with described washing tower through described grey water heater.
As further selection, described deoxygenator gray water outlet is connected with described grey water heater through high pressure ash water pump.
In such scheme, deoxygenator is connected with grey water heater by high pressure ash water pump, and buck out bottom deoxygenator is carried out heat recovery and utilization.
As selection, also comprise clarifying tank, described vacuum flasher is connected with described clarifying tank respectively with vacuum flashing separating tank liquid exit.
As further selection, the clear liquid pipeline of described clarifying tank is connected with described deoxygenator.
Select further as another, described vacuum flasher liquid exit is connected with described clarifying tank through vacuum flashing Heisui River pump, described vacuum flashing separating tank liquid exit is connected with described clarifying tank through vacuum flashing condensate pump, and vacuum flashing separating tank pneumatic outlet is direct emptying after flash vacuum pump.
As selection, also comprise desulphurization system, described middle pressure flash separation tank pneumatic outlet is connected with described desulphurization system.
As selection, described middle pressure flash tank gray water outlet is also connected with vacuum flasher grey water inlet.
As selection, described vacuum flasher flashed vapour outlet is connected with vacuum flashing separating tank flashed vapour entrance through vacuum flashing water cooler.
The main scheme of aforementioned the utility model and each further selection scheme thereof can independent assortment to form multiple scheme; be the utility model can adopt and claimed scheme: as the utility model; each selection can select arbitrary combination with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the present invention program; be the claimed technical scheme of the utility model, do not do exhaustive at this.
The beneficial effects of the utility model:
(1) the utility model adopts three grades of flash distillations, although cost drops into comparatively large, energy recovery rate is higher, plays energy-conserving action, and the value that energy recovery is played far exceedes cost, makes maximum revenue;
(2) the utility model makes acid gas CO2, H2S, NH3, HCN, HCl equal size of direct emptying significantly reduce through three grades of flash distillations, makes it well below emission standard, to environment advantageously;
(3) carry out the heat recuperation from deoxygenator buck out in the utility model, and the water after process in clarifying tank has been carried out recycle, save resources costs.
Accompanying drawing explanation
Fig. 1 is preliminary water treatment process schematic diagram of the present utility model;
Wherein:
Device flag in schema: press flash tank in V1-, V2-low pressure flash chamber, V3-vacuum flasher, V4-vacuum flashing separating tank, flash separation tank is pressed, U1-deoxygenator, E1-ash water heater in V5-, flash cooler is pressed in E2-, E3-vacuum flashing water cooler, P1-vacuum flashing Heisui River pump, P2-vacuum flashing condensate pump, P3-flash vacuum pump, P4-high pressure ash water pump.
The material mark of this flow process is entered from outside: 1-is from the buck of synthetic gas humid-cool system in schema; 2-is from the buck of chilling train; 17-fresh water; 18-is from the water in clarifying tank; 19-low-pressure steam.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
Shown in figure 1, the buck 1 from synthetic gas humid-cool system and the buck 2 from chilling train enter middle pressure flash tank V1 and carry out preliminary flash distillation, isolate flashed vapour 11 and buck 3; Buck 3 enters low pressure flash chamber V2 and carries out two-stage flash, and the buck 4 obtained after two-stage flash enters vacuum flasher V3 tri-grades of flash distillations, and buck 3 also directly can enter vacuum flasher V3 flash distillation simultaneously; Bottom vacuum flasher V3, buck 7 out enters in clarifying tank by vacuum flashing Heisui River pump P1, vacuum flasher V3 top flashed vapour 6 enters vacuum flashing separating tank V4 through vacuum flashing water cooler and isolates gas 9 and buck 8, gas 9 is by flash vacuum pump P3 emptying, and buck 8 enters in clarifying tank by vacuum flashing condensate pump P2; The flashed vapour 11 of therefrom pressing flash tank V1 to separate enters middle pressure flash separation tank V5 isolate gas 14 and liquid by entering middle pressure flash cooler E2 cooling after grey water heater E1, gas directly enters desulphurization system, liquid enters in deoxygenator, pass into fresh water 17 to deoxygenator, the clear water 18 overflowed after treatment in clarifying tank and low-pressure steam 19 simultaneously; Deoxygenator U1 is connected with grey water heater E1 by high pressure ash water pump P4, carries out the heat recovery and utilization of buck 15, then enters in washing tower and wash.The gas that low pressure flash chamber V2 flashes off directly enters deoxygenator U1, utilizes the heat heating deoxygenator U1 of low pressure flash gas, reduces steam consumption.Wherein, described middle pressure, low pressure is the usual saying of this area equipment, operation, and typically, pressure is about 0.5MPa, and low pressure is less than 0.1MPa.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. the preliminary water treatment system for gasification, it is characterized in that: comprise middle pressure flash tank, low pressure flash chamber, vacuum flasher, vacuum flashing separating tank, middle pressure flash separation tank and deoxygenator, described middle pressure flash tank gray water outlet is connected with low pressure flash chamber grey water inlet, described low pressure flash chamber gray water outlet is connected with vacuum flasher grey water inlet, the flashed vapour outlet of low pressure flash chamber is connected with deoxygenator, and described vacuum flasher flashed vapour outlet is connected with vacuum flashing separating tank flashed vapour entrance; Described middle pressure flash tank flashed vapour outlet is connected with middle pressure flash separation tank flashed vapour entrance, and middle pressure flash separation tank liquid exit is connected with deoxygenator.
2. as claimed in claim 1 for the preliminary water treatment system of gasification, it is characterized in that: also comprise grey water heater and middle pressure flash cooler, described middle pressure flash tank flashed vapour outlet is connected with middle pressure flash separation tank flashed vapour entrance by described grey water heater, middle pressure flash cooler.
3., as claimed in claim 2 for the preliminary water treatment system of gasification, it is characterized in that: also comprise washing tower, described deoxygenator gray water outlet is connected with described washing tower through described grey water heater.
4. as claimed in claim 3 for the preliminary water treatment system of gasification, it is characterized in that: described deoxygenator gray water outlet is connected with described grey water heater through high pressure ash water pump.
5., as claimed in claim 1 for the preliminary water treatment system of gasification, it is characterized in that: also comprise clarifying tank, described vacuum flasher is connected with described clarifying tank respectively with vacuum flashing separating tank liquid exit.
6., as claimed in claim 5 for the preliminary water treatment system of gasification, it is characterized in that: the clear liquid pipeline of described clarifying tank is connected with described deoxygenator.
7. as claimed in claim 5 for the preliminary water treatment system of gasification, it is characterized in that: described vacuum flasher liquid exit is connected with described clarifying tank through vacuum flashing Heisui River pump, described vacuum flashing separating tank liquid exit is connected with described clarifying tank through vacuum flashing condensate pump, and vacuum flashing separating tank pneumatic outlet is direct emptying after flash vacuum pump.
8., as claimed in claim 1 for the preliminary water treatment system of gasification, it is characterized in that: also comprise desulphurization system, described middle pressure flash separation tank pneumatic outlet is connected with described desulphurization system.
9., as claimed in claim 1 for the preliminary water treatment system of gasification, it is characterized in that: described middle pressure flash tank gray water outlet is also connected with vacuum flasher grey water inlet.
10. as claimed in claim 1 for the preliminary water treatment system of gasification, it is characterized in that: described vacuum flasher flashed vapour outlet is connected with vacuum flashing separating tank flashed vapour entrance through vacuum flashing water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353912.7U CN204689811U (en) | 2015-05-28 | 2015-05-28 | A kind of preliminary water treatment system for gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520353912.7U CN204689811U (en) | 2015-05-28 | 2015-05-28 | A kind of preliminary water treatment system for gasification |
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| Publication Number | Publication Date |
|---|---|
| CN204689811U true CN204689811U (en) | 2015-10-07 |
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| CN201520353912.7U Expired - Fee Related CN204689811U (en) | 2015-05-28 | 2015-05-28 | A kind of preliminary water treatment system for gasification |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967425A (en) * | 2016-07-04 | 2016-09-28 | 天津晟远环境有限公司 | Coal chemical industry grey water flashing treatment system capable of reducing ammonia accumulation and coal chemical industry grey water flashing treatment process capable of reducing ammonia accumulation |
| CN106365372A (en) * | 2016-11-11 | 2017-02-01 | 中国五环工程有限公司 | Solid-particle-containing acidic black water treatment method |
| CN106946394A (en) * | 2017-05-05 | 2017-07-14 | 北京清创晋华科技有限公司 | The coal gasified black water and grey water treatment system and method for a kind of high heat organic efficiency |
| CN107541294A (en) * | 2016-06-28 | 2018-01-05 | 通用电气神华气化技术有限公司 | Hydrocarbon gasification system and internal heat integrate Application way |
| CN108913208A (en) * | 2018-08-21 | 2018-11-30 | 北京迈未科技有限公司 | A kind of cold grey formula high efficient heat recovery gasification system of wet process and technique |
| CN112624471A (en) * | 2020-12-17 | 2021-04-09 | 华东理工大学 | Short-process coal gasification black water purification method and device |
| CN113060785A (en) * | 2021-03-17 | 2021-07-02 | 宁夏神耀科技有限责任公司 | Coal gasification flash distillation device and coal gasification flash distillation process |
| CN113087262A (en) * | 2021-03-29 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Coal gasification wastewater pretreatment system |
| CN113998747A (en) * | 2020-07-27 | 2022-02-01 | 山西潞安煤基清洁能源有限责任公司 | Steam stripping method for high-sulfur coal washing water |
-
2015
- 2015-05-28 CN CN201520353912.7U patent/CN204689811U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107541294A (en) * | 2016-06-28 | 2018-01-05 | 通用电气神华气化技术有限公司 | Hydrocarbon gasification system and internal heat integrate Application way |
| CN105967425A (en) * | 2016-07-04 | 2016-09-28 | 天津晟远环境有限公司 | Coal chemical industry grey water flashing treatment system capable of reducing ammonia accumulation and coal chemical industry grey water flashing treatment process capable of reducing ammonia accumulation |
| CN106365372A (en) * | 2016-11-11 | 2017-02-01 | 中国五环工程有限公司 | Solid-particle-containing acidic black water treatment method |
| CN106946394A (en) * | 2017-05-05 | 2017-07-14 | 北京清创晋华科技有限公司 | The coal gasified black water and grey water treatment system and method for a kind of high heat organic efficiency |
| CN108913208A (en) * | 2018-08-21 | 2018-11-30 | 北京迈未科技有限公司 | A kind of cold grey formula high efficient heat recovery gasification system of wet process and technique |
| CN113998747A (en) * | 2020-07-27 | 2022-02-01 | 山西潞安煤基清洁能源有限责任公司 | Steam stripping method for high-sulfur coal washing water |
| CN112624471A (en) * | 2020-12-17 | 2021-04-09 | 华东理工大学 | Short-process coal gasification black water purification method and device |
| CN113060785A (en) * | 2021-03-17 | 2021-07-02 | 宁夏神耀科技有限责任公司 | Coal gasification flash distillation device and coal gasification flash distillation process |
| CN113060785B (en) * | 2021-03-17 | 2022-11-15 | 宁夏神耀科技有限责任公司 | Coal gasification flash distillation device and coal gasification flash distillation process |
| CN113087262A (en) * | 2021-03-29 | 2021-07-09 | 中国华能集团清洁能源技术研究院有限公司 | Coal gasification wastewater pretreatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190408 Address after: 610000 No. 30, 6th Floor, Unit 1, Building 4, Chadianzi Anrong Road, Jinniu District, Chengdu City, Sichuan Province Patentee after: Sichuan Yuexin Dake New Energy Technology Co., Ltd. Address before: 610041 No. 2 Yuan Lane, Wuhou District, Chengdu City, Sichuan Province Patentee before: Chengdu height Kodak Science and Technology Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20200528 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |