CN205461089U - Gasification buck low pressure flash distillation heat utilization device - Google Patents
Gasification buck low pressure flash distillation heat utilization device Download PDFInfo
- Publication number
- CN205461089U CN205461089U CN201620123834.6U CN201620123834U CN205461089U CN 205461089 U CN205461089 U CN 205461089U CN 201620123834 U CN201620123834 U CN 201620123834U CN 205461089 U CN205461089 U CN 205461089U
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- low pressure
- steam
- heat exchanger
- oxygen
- pressure flash
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Abstract
The utility model belongs to a gasification buck low pressure flash distillation heat utilization device, including the gasifier, the ash water discharging tube of gasifier shock chamber says and links to each other through the import of first relief pressure valve with the low pressure flash tank, the bottom liquid phase export of low pressure flash tank links to each other through the import of second relief pressure valve with the vacuum flash tank, the liquid phase export of the bottom of vacuum flash tank links to each other with the import at subsider top, the bottom of subsider is equipped with the lime -ash discharge port, the liquid outlet of the subsider upper portion one side tube side through first pump and first heat exchanger links to each other with the inlet on strip tower upper portion, the gas outlet of strip top of the tower portion passes through the pipeline and links to each other with the shell side of first heat exchanger and vapour and liquid separator's import in proper order, have simple structure, reasonable in design, messenger's low pressure flash -off steam and played the deoxidization simultaneously, heat transfer, evacuation and strip effect for the low pressure steam of whole device by -product obtains equitable high -efficient the utilization, improves the advantage of whole grey water system quality of water simultaneously.
Description
Technical field
This utility model belongs to the heat energy utilization field of gasification ash water, is specifically related to a kind of gasification ash water low pressure flash heat-energy utilizing device.
Background technology
Gasification installation many employings chilling process of Present Domestic coal chemical industry is as the wash cooling technique of gasification synthesis gas, effect is to utilize water chilling high-temperature synthesis gas, after then reclaiming heat by flash system, removing the impurity in water by sedimentation, this process is called for short pulp water treatment process.In pulp water treatment process, High Temperature High Pressure dust-laden chilled water passes through flash distillation, more steam can be produced, it is whether reasonable that this some vapor utilizes, directly influence the efficiency of gasification installation, it is unreasonable generally to there is this steam utilization in current process technology, need some vapor emptying, the problems such as gasification installation efficiency is low, buck water quality inferiority.
Utility model content
The purpose of this utility model be to overcome defect of the prior art and provide a kind of simple in construction, reasonable in design, make low pressure flash steam simultaneously work as deoxygenation, heat exchange, evacuation and stripping effect, the low-pressure steam making whole device by-product obtains the most efficiently utilizing, and improves a kind of gasification ash water low pressure flash heat-energy utilizing device of whole ash water system water quality simultaneously.
The purpose of this utility model is achieved in that and includes gasification furnace, gasification furnace shock chamber buck discharge line is connected with the import of low pressure flash chamber by the first air relief valve, the bottom liquid phases outlet of low pressure flash chamber is connected with the import of vacuum flasher by the second air relief valve, the bottom liquid phases outlet of vacuum flasher is connected with the import at subsider top, the bottom of described subsider is provided with ash slag outlet, the liquid outlet of side, subsider top is connected with the inlet on stripper top with the tube side of First Heat Exchanger by the first pump, the gas outlet of stripper top is connected with the shell side of First Heat Exchanger and the import of gas-liquid separator successively by pipeline；The gas outlet of described low pressure flash tank top respectively with the air inlet of the first oxygen-eliminating device, the shell side import of the second heat exchanger, the air inlet of steam bleeding point and stripper bottom that steam is drawn device is connected, the gas outlet of vacuum flashing tank top passes sequentially through steam and is drawn the steam bleeding point of device, steam is drawn the steam exhaust-gas mouth of device, the shell side of the 3rd heat exchanger is connected with the inlet on stripper top, moisturizing pipeline passes through the 3rd heat exchanger tube pass, the tube side of the second heat exchanger and the water inlet of the first oxygen-eliminating device are connected, the shell-side outlet of the second heat exchanger is connected by the air inlet of pipeline and the first oxygen-eliminating device, liquid-phase outlet bottom described stripper is connected by the water inlet of the second pump and the first oxygen-eliminating device, the outlet of described first oxygen-eliminating device is connected with shock chamber's water inlet of gasification furnace by the 3rd pump.
Described gas-liquid separator is provided with sour gas outlet and outfall, and the outlet of described sour gas is connected with burning torch by pipeline, and described outfall is connected with sewerage or water-coal-slurry preparation system by pipeline.
Being provided with threeway between tube side and the water inlet of the first oxygen-eliminating device of described second heat exchanger, the 3rd end of described threeway is connected with boiler feedwater mouth by the second oxygen-eliminating device.
This utility model has the advantage that
1, low pressure flash vapour is originated as stripper stripping gas, can fully be stripped off H in condensed fluid2The sour gas such as S, are prevented effectively from stripper and are corroded by sour gas, moreover it is possible to obtain meeting the oxygen-eliminating device moisturizing source of water quality requirement；
2, low pressure flash vapour is drawn device power resources as steam, it is possible to decrease steam is drawn the load of device pump, improves steam and is drawn device work efficiency；
3, low pressure flash vapour is as the first oxygen-eliminating device heating source, can heat water in the first oxygen-eliminating device, and meanwhile, solubilized removes the oxygen gas component in water, makes water oxygen gas discharge with steam；
4, low pressure flash vapour heats moisturizing by heat exchanger, improves system water supplement temperature, makes boiler feed temperature improve, and reduces boiler coal consumption, makes production cost effectively reduce.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In order to be more clearly understood from technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing illustrates detailed description of the invention of the present utility model, and the most identical label represents identical parts.For making simplified form, only schematically show the part relevant to utility model in each figure, they do not represent its practical structures as product.
As shown in Figure 1, this utility model includes gasification furnace 1, gasification furnace 1 shock chamber buck discharge line is connected with the import of low pressure flash chamber 3 by the first air relief valve 2, the bottom liquid phases outlet of low pressure flash chamber 3 is connected with the import of vacuum flasher 5 by the second air relief valve 4, the bottom liquid phases outlet of vacuum flasher 5 is connected with the import at subsider 6 top, the bottom of described subsider 6 is provided with ash slag outlet, the liquid outlet of side, subsider 6 top is connected with the inlet on stripper 9 top with the tube side of First Heat Exchanger 8 by the first pump 7, the gas outlet at stripper 9 top is connected with the shell side of First Heat Exchanger 8 and the import of gas-liquid separator 10 successively by pipeline；nullThe gas outlet at described low pressure flash chamber 3 top respectively with the air inlet of the first oxygen-eliminating device 11、The shell side import of the second heat exchanger 12、The air inlet of steam bleeding point and stripper 9 bottom that steam is drawn device 13 is connected，The gas outlet at vacuum flasher 5 top passes sequentially through steam and is drawn the steam bleeding point of device 13、Steam is drawn the steam exhaust-gas mouth of device 13、The shell side of the 3rd heat exchanger 14 is connected with the inlet on stripper 9 top，Moisturizing pipeline passes through the 3rd heat exchanger 14 tube side、The tube side of the second heat exchanger 12 and the water inlet of the first oxygen-eliminating device 11 are connected，The shell-side outlet of the second heat exchanger 12 is connected by the air inlet of pipeline and the first oxygen-eliminating device 11，Liquid-phase outlet bottom described stripper 9 is connected with the water inlet of the first oxygen-eliminating device 11 by the second pump 15，The outlet of described first oxygen-eliminating device 11 is connected with shock chamber's water inlet of gasification furnace 1 by the 3rd pump 16.Described gas-liquid separator 10 is provided with sour gas outlet and outfall, and the outlet of described sour gas is connected with burning torch 17 by pipeline, and described outfall is connected with sewerage or water-coal-slurry preparation system 18 by pipeline.Being provided with threeway between tube side and the water inlet of the first oxygen-eliminating device 11 of described second heat exchanger 12, the 3rd end of described threeway is connected with boiler feedwater mouth 20 by the second oxygen-eliminating device 19.
The heat energy utilization method of a kind of gasification ash water low pressure flash heat-energy utilizing device, comprises the steps:
Step one: the High Temperature High Pressure buck in gasification furnace 1 shock chamber enters in low pressure flash chamber 3 by shock chamber's buck discharge line and the first air relief valve 2, the pressure of described High Temperature High Pressure buck is: 1.0-8.7MPa, temperature is: 180-300 DEG C, and its inside containing part coal ash and is dissolved with H2The sour gas of S；Described by the pressure of buck after the first air relief valve 2 it is: 0.15-0.9MPa；
Step 2: the buck described in step one carries out flash distillation in entering low pressure flash chamber 3, flashing off 0.15-0.9MPa, temperature is that the low pressure steam of 120-175 DEG C respectively enters the air inlet of the first oxygen-eliminating device 11, the shell side import of the second heat exchanger 12, steam are drawn in the steam bleeding point of device 13 and the air inlet of stripper 9 bottom；Remaining reduced pressure by the second air relief valve 4 containing solid waste water after enter in vacuum flasher 5 and carry out vacuum flash；
Step 3: carry out vacuum flash after entering vacuum flasher 5 containing solid waste water in described step 2, flash off 60-80 DEG C, pressure is: the steam bleeding point entrance steam that the vacuum flashing vapour of-0.08～-0.05MPa is drawn device 13 by steam is drawn in device 13, high concentration after flash distillation enters containing coal ash buck that subsider 6 is settlement separate to be gone out to sell outside coal ash transmitting system, and subsider 6 supernatant is entered in stripper 9 by the inlet on the first pump 7, the tube side of First Heat Exchanger 8 and stripper 9 top；
Step 4: low pressure steam described in step 2 is drawn the steam bleeding point of device 13 by steam and enters in steam is drawn device 13 and provide vacuumizing condition for vacuum flasher 5, and being entered in stripper 9 by the inlet on stripper 9 top after entering the water heat exchange in shell side and the 3rd heat exchanger 14 tube side of the 3rd heat exchanger 14 with the vacuum flashing vapour described in step 3 after mixing, the steam after water heat exchange in described and the 3rd heat exchanger 14 tube side becomes the condensed water of 55-75 DEG C；
Step 5: low pressure steam described in step 2 occurs stripping reaction with the supernatant in entrance stripper 9 described in step 3 and the condensed water after the heat exchange described in step 4 in being entered stripper 9 by the air inlet of stripper 9 bottom, and the steam and the temperature that generate 90-120 DEG C are the high-temperature-hot-water of 80-90 DEG C；Described temperature is that the water inlet of the high-temperature-hot-water of 80-90 DEG C and the first oxygen-eliminating device 11 is connected；
Step 6: the steam of 90-120 DEG C described in step 5 is by carrying out gas-liquid separation in entering gas-liquid separator 10 after the shell side heat exchange of First Heat Exchanger 8, sour gas after gas-liquid separation burns in entering burning torch 17 by sour gas outlet, and the sewage after gas-liquid separation enters subsequent handling by outfall sewerage or water-coal-slurry preparation system 18；
Step 7: after water enters the 3rd heat exchanger 14 tube side heat exchange by moisturizing pipeline, the low pressure steam entered in the tube side of the second heat exchanger 12 and the shell side of the second heat exchanger 12 carries out secondary heat exchange, water after secondary heat exchange respectively enters in water inlet and second oxygen-eliminating device 19 of the first oxygen-eliminating device 11, and the water in described entrance the second oxygen-eliminating device 19 is entered in boiler by boiler feedwater mouth 20；
Step 8: low pressure steam described in step 2 is entered in the shell side of the second heat exchanger 12 by the shell side import of the second heat exchanger 12 and enters the air inlet of the first oxygen-eliminating device 11 with after the water heat exchange in step 7；
Step 9: the low pressure steam described in step 2 is entered in the first oxygen-eliminating device 11 by the air inlet of the first oxygen-eliminating device 11；In described step 5, temperature is that the high-temperature-hot-water of 80-90 DEG C is entered in the first oxygen-eliminating device 11 by the water inlet of the first oxygen-eliminating device 11；In described step 7, the water after secondary heat exchange is entered in the first oxygen-eliminating device 11 by the water inlet of the first oxygen-eliminating device 11；Entered in the first oxygen-eliminating device 11 by the air inlet of the first oxygen-eliminating device 11 after low pressure steam heat exchange in described step 8；Material in above-mentioned entrance the first oxygen-eliminating device 11 is entered in the shock chamber being entered gasification furnace 1 in the first oxygen-eliminating device 11 after deoxygenation by shock chamber's water inlet of the outlet of the first oxygen-eliminating device 11, the 3rd pump 16 and gasification furnace 1.
The a series of detailed description of those listed above is only for illustrating of feasibility embodiment of the present utility model; they are also not used to limit protection domain of the present utility model, within all equivalent implementations made without departing from this utility model skill spirit or change should be included in protection domain of the present utility model.It is to be noted in this article, " first ", " second " etc. are only used for differentiation each other, rather than represent their significance level and order etc..
Claims (3)
1. a gasification ash water low pressure flash heat-energy utilizing device, including gasification furnace (1), it is characterised in that:
Gasification furnace (1) shock chamber buck discharge line is entered by the first air relief valve (2) and low pressure flash chamber (3)
Mouth is connected, and the bottom liquid phases of low pressure flash chamber (3) exports by the second air relief valve (4) and vacuum flasher
(5) import is connected, the bottom liquid phases outlet of vacuum flasher (5) and the import at subsider (6) top
Be connected, the bottom of described subsider (6) be provided with ash slag outlet, subsider (6) side, top go out liquid
Mouth is connected with the inlet on stripper (9) top with the tube side of First Heat Exchanger (8) by the first pump (7),
The gas outlet at stripper (9) top by pipeline successively shell side and gas-liquid with First Heat Exchanger (8) divide
Import from device (10) is connected；The gas outlet at described low pressure flash chamber (3) top respectively with the first deoxygenation
The air inlet of device (11), the shell side import of the second heat exchanger (12), steam are drawn the steam of device (13)
Bleeding point is connected with the air inlet of stripper (9) bottom, and the gas outlet at vacuum flasher (5) top depends on
Secondary be drawn the steam bleeding point of device (13) by steam, steam is drawn the steam exhaust-gas mouth of device (13),
The shell side of three heat exchangers (14) is connected with the inlet on stripper (9) top, and moisturizing pipeline changes by the 3rd
The water inlet of hot device (14) tube side, the tube side of the second heat exchanger (12) and the first oxygen-eliminating device (11) is connected,
The shell-side outlet of the second heat exchanger (12) is connected by the air inlet of pipeline and the first oxygen-eliminating device (11), institute
State the liquid-phase outlet water inlet by the second pump (15) with the first oxygen-eliminating device (11) of stripper (9) bottom
Being connected, the outlet of described first oxygen-eliminating device (11) is by the Quench of the 3rd pump (16) with gasification furnace (1)
Room water inlet is connected.
A kind of gasification ash water low pressure flash heat-energy utilizing device, it is characterised in that:
Described gas-liquid separator (10) is provided with sour gas outlet and outfall, and described sour gas exports
Being connected with burning torch (17) by pipeline, described outfall is by pipeline and sewerage or water coal
Slurry preparation system (18) is connected.
A kind of gasification ash water low pressure flash heat-energy utilizing device, it is characterised in that:
It is provided with threeway, institute between tube side and the water inlet of the first oxygen-eliminating device (11) of described second heat exchanger (12)
The 3rd end stating threeway is connected with boiler feedwater mouth (20) by the second oxygen-eliminating device (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620123834.6U CN205461089U (en) | 2016-02-04 | 2016-02-04 | Gasification buck low pressure flash distillation heat utilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620123834.6U CN205461089U (en) | 2016-02-04 | 2016-02-04 | Gasification buck low pressure flash distillation heat utilization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205461089U true CN205461089U (en) | 2016-08-17 |
Family
ID=56674385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620123834.6U Withdrawn - After Issue CN205461089U (en) | 2016-02-04 | 2016-02-04 | Gasification buck low pressure flash distillation heat utilization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205461089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561616A (en) * | 2016-02-04 | 2016-05-11 | 河南心连心化肥有限公司 | Gasification ash water low-pressure flash heat energy utilizing device and heat energy utilizing method thereof |
| 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 |
-
2016
- 2016-02-04 CN CN201620123834.6U patent/CN205461089U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105561616A (en) * | 2016-02-04 | 2016-05-11 | 河南心连心化肥有限公司 | Gasification ash water low-pressure flash heat energy utilizing device and heat energy utilizing method thereof |
| CN105561616B (en) * | 2016-02-04 | 2017-11-14 | 河南心连心化肥有限公司 | A kind of gasification ash water low pressure flash heat-energy utilizing device and its heat energy utilization method |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20171114 |