CN203653282U - Device for reducing ammonia nitrogen in grey water - Google Patents
Device for reducing ammonia nitrogen in grey water Download PDFInfo
- Publication number
- CN203653282U CN203653282U CN201320872619.2U CN201320872619U CN203653282U CN 203653282 U CN203653282 U CN 203653282U CN 201320872619 U CN201320872619 U CN 201320872619U CN 203653282 U CN203653282 U CN 203653282U
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- CN
- China
- Prior art keywords
- stripping tower
- ammonia nitrogen
- pressure flash
- low pressure
- grey water
- 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.)
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000010797 grey water Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims description 20
- 230000009467 reduction Effects 0.000 claims description 20
- 239000010865 sewage Substances 0.000 abstract description 13
- 239000002351 wastewater Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000003245 coal Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Physical Water Treatments (AREA)
Abstract
The utility model discloses a device for reducing ammonia nitrogen in grey water. The device comprises a low-pressure flash tank and a grey water groove and is characterized by aslo comprising a stripping tower, wherein a vapor inlet in the lower part of the stripping tower is connected to a low-pressure flash vapor outlet of the low-pressure flash tank through a pipeline, and a low-pressure flash vapor flow control valve and a flowmeter are arranged on the connecting pipeline; a feed port in the upper part of the stripping tower is connected to a grew water groove outlet through a pipeline, and a grey water flow control valve and a flowmeter are arranged on the connecting pipeline; a discharge port in the bottom of the stripping tower is connected to a grey water treating pipeline through a stripping sewage pump. The device for reducing ammonia nitrogen in grey water, disclosed by the utility model, has the advantages that the stripping tower is additionally arranged in the device and is used for stripping the grey water so as to reduce the content of the ammonia nitrogen in the grey water, the excess low-pressure flash vapor in the original device can be recycled, and the flash vapor can also be used for reducing the content of the ammonia nitrogen in the grey water, thus the treatment cost of the wastewater is greatly reduced.
Description
Technical field
The utility model belongs to Coal Gasification Technology field, relates to the water-purification plant in a kind of coal gasifying process, relates in particular to a kind of device that reduces ammonia nitrogen in buck.
Background technology
The grey water handing operation of texaco coal gasification technology is mainly made up of multistage flash evaporation, comprises high pressure flash, low pressure flash, vacuum flashing etc.The Main Function of flash distillation purifies Heisui River exactly, makes it to recycle.For keeping system water quality, also must arrange part buck outward to guarantee the water conditioning of system.
Ammonia-nitrogen content is about 400mg/L under normal circumstances for buck after multistage flash evaporation, and ammonia-nitrogen content changes on a small quantity with the variation of water amount of blowdown conventionally.Outer row's buck is sent to professional sewage work, and processing costs changes with the variation of ammonia-nitrogen content.And on the other hand, it is most of more than needed that the low pressure flash gas of system has, normally, by all emptying after deoxygenator, not only cause very large waste, also increase on-the-spot noise pollution.
In existing technique, outer ash discharge water directly passes through buck pumping toward professional sewage work, and a very expensive part for sewage disposal is determined by the content of ammonia nitrogen in buck, if adopt rational method can reduce ammonia-nitrogen content in buck, the expense of sewage disposal will reduce greatly so.
Summary of the invention
The purpose of this utility model is to provide a kind of device that reduces ammonia nitrogen in buck, solves the higher technical problem of existing coal gasifying process China and foreign countries' ash discharge water ammonia-nitrogen content, can reduce ammonia-nitrogen content in buck, and the processing costs of sewage is reduced greatly; Simultaneously described device has been realized the recycling of low pressure flash gas more than needed, reduces the noise pollution that residue steam emptying causes, and makes in Coal Gasification Technology grey water handing technique and installs more environmental protection and more economical.
For achieving the above object, the utility model adopts following technical scheme:
A kind of device that reduces ammonia nitrogen in buck, comprise low pressure flash chamber and ash water tank, it is characterized in that, described device also comprises stripping tower, stripping tower bottom steam inlet connects the outlet of low pressure flash chamber low pressure flash gas by pipeline, stripping tower top opening for feed connects ash water tank outlet by pipeline, and stripping tower bottom discharge opening pipeline connects grey water handing pipeline.
Described stripping tower is tray column, contains some layers of tower tray.Stripping tower preferably arranges 35 layers of tower tray, the preferred float-valve type of stripping tower tower tray.
Preferably, stripping tower top arranges scum dredger.Described scum dredger is wire mesh demister or baffle formula scum dredger.
On the connecting tube of described stripping tower bottom steam inlet and the outlet of low pressure flash chamber low pressure flash gas, low pressure flash airshed control valve and under meter are set.Described low pressure flash airshed meter is preferably orifice-plate flowmeter.
Particularly, increase by the 1st threeway on low pressure flash gas outlet conduit, tee branch pipeline connects stripping tower bottom steam inlet.
On the connecting tube of described stripping tower top opening for feed and ash water tank outlet, grey Water flow control valve and under meter are set.Described grey water ga(u)ge is preferably Venturi tube.
Particularly, increase by the 2nd threeway on ash water tank outlet conduit, tee branch pipeline connects stripping tower top opening for feed.
Particularly, stripping tower bottom discharge port arranges stripping sump pump.As preferably, described stripping sump pump is impeller pump.
Described device can be applicable to grey water handing in coal gasifying process, to reduce the content of ammonia nitrogen in buck, comprises the following steps:
Step a) reclaims unnecessary low pressure flash gas;
The low pressure flash gas pre-treatment buck that step b) utilization is reclaimed;
Pretreated buck is sent raw waste water processing pipeline by step c).
Utilize the device of ammonia nitrogen in reduction buck of the present utility model, described step a) is directly taken low pressure flash gas more than needed from low pressure flash chamber top.Step a) is got low pressure flash gas can pass through under meter quantitative fetching, can guarantee the deaerating effect of deoxygenator, can guarantee again the Srteam Stripping effect of stripping tower.The processed buck of described step b) is directly introduced from former grey exit of pump; Measurable the taking of buck that step b) is introduced.The buck of described step c) after by stripping can directly be sent into raw waste water processing pipeline.
In reduction buck of the present utility model, the device of ammonia nitrogen increases a stripping tower, buck stripping is processed to reduce to the content of its ammonia nitrogen, in described reduction buck, the device of ammonia nitrogen comprises gageable low pressure flash gas taking device, gageable buck taking device, and the stripping tower of stripping buck.Introduce low pressure flash gas more than needed as steam stripping agent in former low pressure flash chamber outlet, the buck that stripping is introduced from ash water tank in stripping tower, reaches the effect that reduces ammonia nitrogen in buck.The external ash discharge water of this utility model carries out stripping processing, can reduce ammonia-nitrogen content in buck, thereby not only greatly reduce the expense of grey water handing by ammonia nitrogen in reduction buck, and realized the recycling of low pressure flash gas more than needed, more reduce the noise pollution that low pressure flash vapour emptying more than needed causes.The utility model is suitable for industrial applications in coal gasification apparatus, 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 that existing waste water treatment device mesolow flashed vapour and buck are arranged schematic diagram outward.
Fig. 2 is the device schematic diagram of ammonia nitrogen in reduction buck of the present utility model;
Wherein: 1,2,3,5 is valve, 4, be low pressure flash airshed control valve, 6, low pressure ash exit of pump valve, 7, be grey Water flow control valve, 8, stripping sump pump, the grey water pumps of 9 low pressure, 10, stripping tower.
Embodiment
With reference to figure 1, Fig. 1 is that existing waste water treatment device mesolow flashed vapour and buck are sent schematic diagram outside, and in existing technique, low pressure flash gas has very large having more than needed, and has very large waste after deoxygenator emptying, has increased on-the-spot noise pollution simultaneously.
In reduction buck of the present utility model, the device of ammonia nitrogen as shown in Figure 2.Put it briefly, in described reduction buck, the device of ammonia nitrogen comprises gageable low pressure flash gas taking device, gageable buck taking device, and the stripping tower of stripping buck, and buck after stripping is sent into raw waste water and process the stripping sump pump of pipe network.
The device of ammonia nitrogen in described reduction buck, between low pressure flash chamber and ash water tank, increase stripping tower 10, stripping tower 10 bottom steam inlets connect the outlet of low pressure flash chamber low pressure flash gas by pipeline, stripping tower 10 top opening for feeds connect ash water tank outlet by pipeline, and stripping tower 10 bottom discharge mouth pipelines connect grey water handing pipeline.
For improving Srteam Stripping effect, if described stripping tower 10 arranges 35 layers of tower tray and scum dredger, the preferred valve tray column of tower tray, the preferred wire mesh demister of scum dredger.
Particularly, remove oxygen pipeline valve 1 rear increase valve 2 in former low pressure flash chamber, and at middle the 1st threeway T1 that increases of valve 1 and valve 2, tee branch connects stripping tower bottom steam inlet.After the 1st threeway T1, increase valve 3, follow-up pipeline increases low pressure flash airshed adjusting control valve door 4.Before former low pressure ash exit of pump valve 6, increase by the 2nd threeway T2, tee branch pipeline connects stripping tower top opening for feed, and on pipeline, increases buck flow regulating and controlling valve door 7 after the 2nd threeway T2.In stripping tower bottom, discharge port arranges stripping sump pump 8, after former low pressure ash exit of pump valve 6, increases by the 3rd threeway T3, and stripping sump pump 8 pipelines connect the 3rd threeway T3 arm, increase valve 5 on described connection line.
Adopt the device of ammonia nitrogen in reduction buck of the present utility model to process buck, comprise the following steps:
Step a) reclaims unnecessary low pressure flash gas, is measured and is taken by under meter, can guarantee the deaerating effect of downstream deoxygenator, can guarantee again the effect of sewage reduction ammonia nitrogen in stripping tower.
The low pressure flash gas pretreating sewage that step b) utilization is reclaimed, processed sewage takes into account by flow the flow that valve control enters, and coordinates the amount of low pressure flash vapour to carry out quantitative fetching, thereby guarantees Srteam Stripping effect.
Pretreated sewage is sent raw waste water processing pipeline by step c), by stripping sump pump, the sewage after stripping is sent to raw waste water processing pipeline.
Embodiment is in detail: open valve 1,2,3, the flash distillation tolerance that enters stripping tower 10 by low pressure flash airshed adjusting control valve door 4 and under meter control, control by buck flow regulating and controlling valve door 7 the grey water yield that enters stripping tower 10, by temperature and the pressure-controlling Srteam Stripping effect of stripping tower 10 upper and lower parts; Open valve 5, open stripping sump pump 8 sewage after treatment stripping is sent to raw waste water processing pipeline.
The utility model is applied in actual production, has both greatly reduced the processing costs of sewage, has also reduced on-the-spot noise pollution, reached kill two birds with one stone, the good result of energy-saving and emission-reduction.
Above the device of ammonia nitrogen in reduction buck provided by the utility model is described in detail, application specific embodiment is set forth principle of the present utility model and embodiment.The explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof.It should be pointed out that for those skilled in the art, do not departing under the prerequisite of inventive principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of claim of the present utility model.
Claims (10)
1. one kind is reduced the device of ammonia nitrogen in buck, comprise low pressure flash chamber and ash water tank, it is characterized in that, described device also comprises stripping tower, stripping tower bottom steam inlet connects the outlet of low pressure flash chamber low pressure flash gas by pipeline, stripping tower top opening for feed connects ash water tank outlet by pipeline, and stripping tower bottom discharge opening pipeline connects grey water handing pipeline.
2. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, described stripping tower is tray column.
3. the device of ammonia nitrogen in reduction buck according to claim 2, is characterized in that, described stripping tower is valve tray column.
4. the device of ammonia nitrogen in reduction buck according to claim 2, is characterized in that, described stripping tower arranges 35 layers of tower tray.
5. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, described stripping tower top arranges wire mesh demister or baffle formula scum dredger.
6. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, on the connecting tube of described stripping tower bottom steam inlet and the outlet of low pressure flash chamber low pressure flash gas, low pressure flash airshed control valve and under meter is set.
7. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, in described device, increases by the 1st threeway on low pressure flash gas outlet conduit, and tee branch pipeline connects stripping tower bottom steam inlet.
8. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, on the connecting tube of described stripping tower top opening for feed and ash water tank outlet, grey Water flow control valve and under meter is set.
9. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, in described device, increases by the 2nd threeway on ash water tank outlet conduit, and tee branch pipeline connects stripping tower top opening for feed.
10. the device of ammonia nitrogen in reduction buck according to claim 1, is characterized in that, stripping tower bottom discharge port arranges stripping sump pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872619.2U CN203653282U (en) | 2013-12-27 | 2013-12-27 | Device for reducing ammonia nitrogen in grey water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320872619.2U CN203653282U (en) | 2013-12-27 | 2013-12-27 | Device for reducing ammonia nitrogen in grey water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203653282U true CN203653282U (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320872619.2U Expired - Lifetime CN203653282U (en) | 2013-12-27 | 2013-12-27 | Device for reducing ammonia nitrogen in grey water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203653282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673292A (en) * | 2017-03-15 | 2017-05-17 | 赵昱昊 | Coal gasification greywater pretreatment method |
-
2013
- 2013-12-27 CN CN201320872619.2U patent/CN203653282U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106673292A (en) * | 2017-03-15 | 2017-05-17 | 赵昱昊 | Coal gasification greywater pretreatment method |
| CN106673292B (en) * | 2017-03-15 | 2019-12-10 | 赵昱昊 | Coal gasification ash water pretreatment method |
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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 | ||
| 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. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |