CN203653283U - Device for removing ammonia by flash steam stripping instead of steam stripping - Google Patents
Device for removing ammonia by flash steam stripping instead of steam stripping Download PDFInfo
- Publication number
- CN203653283U CN203653283U CN201320872649.3U CN201320872649U CN203653283U CN 203653283 U CN203653283 U CN 203653283U CN 201320872649 U CN201320872649 U CN 201320872649U CN 203653283 U CN203653283 U CN 203653283U
- Authority
- CN
- China
- Prior art keywords
- steam
- flash
- stripping tower
- ammonia
- replaces
- 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.)
- Expired - Lifetime
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 102
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 51
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002351 wastewater Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- 239000003245 coal Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The utility model discloses a device for removing ammonia by flash steam stripping instead of steam stripping. The device comprises a flash tank, a steam stripper and a storage tank containing ammonia wastewater, and is characterized in that a steam inlet located at the lower part of the steam stripper is connected with the flash steam outlet of the flash tank by virtue of a pipeline, a feed inlet located at the upper part of the steam stripper is connected with the storage tank by virtue of a feeding pipe, and an outlet pipeline located at the bottom of the steam stripper is connected to a wastewater treatment pipeline. The device disclosed by the utility model utilizes the evacuated flash steam in the original process to replace steam so as to remove ammonia in the steam stripper by steam stripping, the flash steam pressure is 0.6-0.8MP, the temperature is about 140 DEG C, and the operational requirements of ammonia removal by steam striping in the steam stripper can be met. The recycling of flash steam can be realized by adopting the ammonia removal device provided by the utility model, the use of the steam energy is reduced, the energy is saved and the production cost is decreased.
Description
Technical field
The utility model relates to the device except ammonia of stripping in a kind of coal methanol technics processed, be specifically related to a kind of flash steam and replace the device of steam stripped except ammonia, utilize flash system flash steam to maintain except the steam stripped production of ammonia tower, be suitable for converting in coal methanol technics processed the stripping of refining plant except ammonia tower.
Background technology
Coal methyl alcohol processed is take solid coal as raw material, through gas making, purifies, and conversion, removing carbon dioxide, is mixed with the synthetic gas of certain proportioning, and methanol under the effect of catalyzer, as important industrial chemicals.
In the crude synthesis gas scavenging process of coal methyl alcohol processed, owing to containing the impurity such as ammonia and hydrogen sulfide in synthetic gas, thereby absorbed by water, containing the long-term operation in system of the waste water of ammonia, easily corroded pipeline, is unfavorable for the long-term stability operation of producing.So in coal methanol technics processed, conversion refining plant has except ammonia tower, stripping tower stripping is except the device of ammonia.
Stripping tower stripping is except the device of ammonia is the steam by adding 0.5MP, allows the waste water that contains ammonia heating except in ammonia tower, and in tower, temperature is controlled at 110 degree left and right, changes its solvability, and ammonia is fully discharged.
In existing coal methanol device processed, the flash steam pressure that pulp water system flashes off is at 0.6--0.8MP, and temperature, in 140 degree left and right, is not recycled, directly the emptying torch that reduces internal heat.
Summary of the invention
The purpose of this utility model is to provide a kind of flash steam and replaces the device of steam stripped except ammonia, and device of the present utility model can be realized waste gas comprehensive utilization, and save energy also can reach the effect of stripping except ammonia.
For achieving the above object, the utility model adopts following technical scheme:
Flash steam of the present utility model replaces the device of steam stripped except ammonia, comprise the storage tank of flash tank, stripping tower and ammonia-containing water, it is characterized in that, stripping tower bottom steam inlet connects the outlet of flash tank flashed vapour by pipeline, stripping tower top opening for feed connects storage tank by feed-pipe, and stripping tower bottom outlet conduit connects wastewater treatment pipeline.
Flash steam of the present utility model replaces the device of steam stripped except ammonia, the waste water that contains ammonia (and hydrogen sulfide) (phlegma) is joined on the tower tray of stripping tower, the flash steam of introducing with bottom flash tank mixes fully on tower tray, make phlegma heating, change the solvability of ammonia in water, thereby fully parsed.The flash steam pressure of introducing is at 0.6-0.8MP, and temperature, in 140 degree left and right, regulates flash steam flow can guarantee the stable of stripping tower temperature, meets the operational requirement of stripping tower stripping except ammonia.
The device that described flash steam replaces steam stripped to remove ammonia is provided with temperature-detecting device at stripping tower top.
Described flash steam replaces the device of steam stripped except ammonia, on flash tank flashed vapour outlet conduit, increases threeway, and tee branch pipeline connects stripping tower bottom steam inlet.
On the connecting tube of described stripping tower bottom steam inlet and the outlet of flash tank flashed vapour, flash vapor stream control valve is set.
Described stripping tower top exit is by the pipeline emptying torch that reduces internal heat.
Described stripping tower is tray column, preferably valve tray column.Stripping tower preferably arranges 12 layers of tower tray.
Preferably, stripping tower top arranges scum dredger.Described scum dredger is wire mesh demister or baffle formula scum dredger.
Device of the present utility model utilizes the flash steam of emptying in former technique to replace steam, for removing ammonia except ammonia tower stripping, having reduced to a certain extent the use of the energy, be provided with blow-off valve and flash vapor stream control valve in flash steam outlet, is the temperature-stable in order to guarantee stripping tower top.In the vicissitudinous situation of wastewater flow rate, can open blow-off valve or regulate flash vapor stream control valve, increase or reduce the add-on of flash steam.Adopt ammonia removal device of the present utility model, the most direct effect is the use that has reduced steam energy, has realized the recycling of flashed vapour, saves production cost.When waste gas is fully recycled, can make the temperature at stripping tower top reach design temperature, improve the optimization of device, production status is optimized more.The utility model is suitable for industrial applications in coal methanol device processed, has good economic benefit and environmental benefit.
Describe the present invention below by embodiment, protection scope of the present invention is not limited with embodiment, but is limited with claims.
Accompanying drawing explanation
Fig. 1 is the structural representation that flash steam of the present utility model replaces steam stripped ammonia removal device.
Embodiment
Be described in further detail of the present utility model below in conjunction with accompanying drawing.
In conversion refining plant, stripping tower ammonia removal device as shown in Figure 1, comprise flash tank 1, the storage tank 6 of stripping tower 4 and ammonia-containing water, the storage tank 6 of ammonia-containing water joins by feed-pipe 5 on the tower tray of stripping tower 4, provide ammonia-containing water to stripping tower 4, the flash steam that flash tank 1 flashes off joins stripping tower 4 bottom steam inlets by pipeline 2, the flash steam of bottom and the ammonia-containing water on top fully mix on stripping tower 4 tower trays, ammonia-containing water is heated, ammonia by stripping out, after stripping, gas is by the stripping tower 4 top exit pipeline 7 emptying torch that reduces internal heat, the waste water that remove after ammino lattice stripping tower bottom is discharged to Sewage treatment systems by outlet conduit 8.Said process circular flow.
In the time that stripping tower 4 operating modes change, the stopping valve 9 that can open on pipeline 3 regulates, and regulates the flash vapor stream control valve 10 on pipeline 2, regulates the temperature of stripping tower 4, guarantee the temperature-stable on stripping tower 4 outlet lines 7, meet the operational requirement of stripping tower 4.
Claims (8)
1. a flash steam replaces the device of steam stripped except ammonia, comprise the storage tank of flash tank, stripping tower and ammonia-containing water, it is characterized in that, stripping tower bottom steam inlet connects the outlet of flash tank flashed vapour by pipeline, stripping tower top opening for feed connects storage tank by feed-pipe, and stripping tower bottom outlet conduit connects wastewater treatment pipeline.
2. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, described flash steam replaces the device of steam stripped except ammonia, on flash tank flashed vapour outlet conduit, increases threeway, and tee branch pipeline connects stripping tower bottom steam inlet.
3. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, on the connecting tube of described stripping tower bottom steam inlet and the outlet of flash tank flashed vapour, flash vapor stream control valve is set.
4. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, the device that described flash steam replaces steam stripped to remove ammonia is provided with temperature-detecting device at stripping tower top.
5. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, described stripping tower top exit is by the pipeline emptying torch that reduces internal heat.
6. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, described stripping tower is tray column.
7. flash steam according to claim 6 replaces the device of steam stripped except ammonia, it is characterized in that, described stripping tower is valve tray column.
8. flash steam according to claim 1 replaces the device of steam stripped except ammonia, it is characterized in that, described stripping tower top arranges wire mesh demister or baffle formula scum dredger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872649.3U CN203653283U (en) | 2013-12-27 | 2013-12-27 | Device for removing ammonia by flash steam stripping instead of steam stripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872649.3U CN203653283U (en) | 2013-12-27 | 2013-12-27 | Device for removing ammonia by flash steam stripping instead of steam stripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203653283U true CN203653283U (en) | 2014-06-18 |
Family
ID=50919697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320872649.3U Expired - Lifetime CN203653283U (en) | 2013-12-27 | 2013-12-27 | Device for removing ammonia by flash steam stripping instead of steam stripping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203653283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330571A (en) * | 2015-06-19 | 2016-02-17 | 上海珈叶实业有限公司 | Preparation method of hydroxyethylurea crystal or aqueous solution |
-
2013
- 2013-12-27 CN CN201320872649.3U patent/CN203653283U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105330571A (en) * | 2015-06-19 | 2016-02-17 | 上海珈叶实业有限公司 | Preparation method of hydroxyethylurea crystal or aqueous solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee after: NANJING CHENGZHI CLEAN ENERGY Co.,Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee before: Nanjing Zhicheng clean energy Limited by Share Ltd. Address after: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee after: Nanjing Zhicheng clean energy Limited by Share Ltd. Address before: 210047 No. 118, Tai Fang Road, Nanjing chemical industry park, Jiangsu, Nanjing Patentee before: WISON (NANJING) CLEAN ENERGY CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |