CN203620498U - Rare-earth waste gas treatment system - Google Patents
Rare-earth waste gas treatment system Download PDFInfo
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- CN203620498U CN203620498U CN201320838922.0U CN201320838922U CN203620498U CN 203620498 U CN203620498 U CN 203620498U CN 201320838922 U CN201320838922 U CN 201320838922U CN 203620498 U CN203620498 U CN 203620498U
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- ammonia
- waste gas
- treatment system
- spray tower
- spray
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Abstract
The utility model relates to a waste gas treatment system, in particular to a rare-earth waste gas treatment system. The rare-earth waste gas treatment system comprises a cooling system, an ammonia water spray tower, an alkali liquor spray tower and an ammonia water collecting device, wherein a waste gas generated by an acid dissolving workshop and a separating workshop enters the ammonia water spray tower after being cooled by the cooling system; the waste gas processed by the ammonia water spray tower enters the alkali liquor spray tower, and is discharged up to the standard after being processed; the ammonia water collecting device comprises an ammonia-nitrogen wastewater storage pond and an ammonia absorption pond; the ammonia-nitrogen wastewater generated with a carbon forming workshop and ammonia respectively enter the ammonia-nitrogen wastewater storage pond and the ammonia absorption pond; the ammonia water inside an ammonia water absorption pond is led to the ammonia-nitrogen wastewater storage pond to form a mixed solution; the mixed solution in the ammonia-nitrogen wastewater storage pond is spraying water provided by the ammonia water spray tower. By adopting the rare-earth waste gas treatment system provided by the utility model, ingredients in the waste gas and the wastewater are comprehensively utilized, the ammonia inside the waste gas is prepared into the ammonia water, and the waste gas containing an acid is neutralized by using the ammonia water. Thus, the waste gas treatment cost is reduced.
Description
Technical field
The utility model relates to a kind of exhaust treatment system, is specially rare earth exhaust treatment system.
Background technology
In rare earth purification separating technology, multiple workshop sections can produce different waste gas, such as acid-soluble workshop and separation plants produce containing sour waste gas, the waste water that carbon becomes workshop to produce ammonia and contain ammonia nitrogen, and sintering mill (plant) can produce the waste gas that contains in a large number rare earth dust, traditional waste gas processing method is that the gas sampling of each blowdown point is got up to unify to process.Due to many places gas sampling together, exhaust gas constituents complexity, need to pass through multiple working procedure processing, process exhausted air quantity larger, cost is high.
Utility model content
According to above-mentioned technical problem, the utility model provides the waste gas treatment process that a kind of cost is low, and concrete technical scheme is:
Rare earth exhaust treatment system, comprise cooling system, ammonia spray tower, alkali lye spray column and ammoniacal liquor gathering-device, the waste gas that acid-soluble workshop and separation plants produce enters ammonia spray tower after cooling system cooling, the waste gas of processing through ammonia spray tower enters into the processing of alkali lye spray column, processes rear discharge up to standard;
Described ammoniacal liquor gathering-device comprises ammonia nitrogen waste water reservoir and ammonia absorption cell, ammonia nitrogen waste water and ammonia that carbon becomes workshop to produce enter respectively ammonia nitrogen waste water reservoir and ammonia absorption cell, and the ammoniacal liquor in ammonia absorption pond is passed into ammonia nitrogen waste water reservoir and forms mixed liquor; Mixed liquor in ammonia nitrogen waste water reservoir provides spray-water for ammonia spray tower;
Described sintering mill (plant) and the waste gas of boiler shop are by the processing of alkali lye spray column.
The waste gas of described sintering mill (plant) first reclaims the rare earth particle in waste gas through cyclone separator after over-heat-exchanger reclaims heat, and then waste gas enter the processing of alkali lye spray column.
The waste gas of described boiler shop first enters the processing of alkali lye spray column after boiler heat exchanger reclaims heat.
The heat that described cooling system, heat exchanger and boiler heat exchanger reclaims is for preheating device before boiler feed water.
Described ammonia spray tower comprises tower body, there is tail gas outlet on tower body top, and exhaust gas inlet and shower water outlet are arranged at bottom, and in tower body, topmost has steam diffusion barrier, steam diffusion barrier below is laminated with the spray chamber that is no less than two, and spray chamber includes shower and is positioned at the packing layer of shower below; There is condensation reflux unit in described tail gas exit.
The rare earth exhaust treatment system that the utility model provides, comprehensive utilizes composition in waste gas, waste water, utilizes the ammonia in waste gas to make ammoniacal liquor, then goes neutralization to contain sour waste gas with ammoniacal liquor, has reduced the cost of exhaust-gas treatment.
Accompanying drawing explanation
Fig. 1 is rare earth exhaust treatment system structural representation of the present utility model;
Fig. 2 is ammonia spray tower structure schematic diagram of the present utility model.
The specific embodiment
The accompanying drawings specific embodiment of the present utility model, as shown in Figure 1, rare earth exhaust treatment system, comprise cooling system 6, ammonia spray tower 7, alkali lye spray column 8 and ammoniacal liquor gathering-device, the waste gas that acid-soluble workshop 1 and separation plants 2 produce enters ammonia spray tower 7 after cooling system 6 coolings, the waste gas of processing through ammonia spray tower 7 enters into alkali lye spray column 8 and processes, and processes rear discharge up to standard;
Described ammoniacal liquor gathering-device comprises ammonia nitrogen waste water reservoir 10 and ammonia absorption cell 9, carbon becomes ammonia nitrogen waste water and the ammonia that workshop 3 produces to enter respectively ammonia nitrogen waste water reservoir 10 and ammonia absorption cell 9, and the ammoniacal liquor in ammonia absorption pond 9 is passed into ammonia nitrogen waste water reservoir 10 and forms mixed liquor; Mixed liquor in ammonia nitrogen waste water reservoir 10 provides spray-water for ammonia spray tower 7;
Described sintering mill (plant) 4 and the waste gas of boiler shop 5 are processed by alkali lye spray column 8.
The waste gas of described sintering mill (plant) 4 first reclaims the rare earth particle in waste gas through cyclone separator 12 after over-heat-exchanger 11 reclaims heat, and then waste gas enter alkali lye spray column 8 and process.
The waste gas of described boiler shop 5 first enters alkali lye spray column 8 and processes after boiler heat exchanger 13 reclaims heat.
The heat that described cooling system 6, heat exchanger 11 and boiler heat exchanger 13 reclaims for boiler feed water before preheating device 14.
Described ammonia spray tower 7 comprises tower body, there is tail gas outlet 70 on tower body top, exhaust gas inlet 76 and shower water outlet 77 are arranged at bottom, in tower body, topmost has steam diffusion barrier 72, steam diffusion barrier 72 belows are laminated with the spray chamber 75 that is no less than two, and spray chamber 75 includes shower 73 and is positioned at the packing layer 74 of shower 73 belows; Described tail gas exports 70 places condensation reflux unit 71.
Claims (4)
1. rare earth exhaust treatment system, it is characterized in that: comprise cooling system, ammonia spray tower, alkali lye spray column and ammoniacal liquor gathering-device, the waste gas that acid-soluble workshop and separation plants produce enters ammonia spray tower after cooling system cooling, the waste gas of processing through ammonia spray tower enters into the processing of alkali lye spray column, processes rear discharge up to standard;
Described ammoniacal liquor gathering-device comprises ammonia nitrogen waste water reservoir and ammonia absorption cell, ammonia nitrogen waste water and ammonia that carbon becomes workshop to produce enter respectively ammonia nitrogen waste water reservoir and ammonia absorption cell, and the ammoniacal liquor in ammonia absorption pond is passed into ammonia nitrogen waste water reservoir and forms mixed liquor; Mixed liquor in ammonia nitrogen waste water reservoir provides spray-water for ammonia spray tower;
Described sintering mill (plant) and the waste gas of boiler shop are by the processing of alkali lye spray column.
2. rare earth exhaust treatment system according to claim 1, is characterized in that: the waste gas of described sintering mill (plant) first reclaims the rare earth particle in waste gas through cyclone separator after over-heat-exchanger reclaims heat, and then waste gas enter the processing of alkali lye spray column; The waste gas of described boiler shop first enters the processing of alkali lye spray column after boiler heat exchanger reclaims heat.
3. rare earth exhaust treatment system according to claim 2, is characterized in that: the heat that described cooling system, heat exchanger and boiler heat exchanger reclaims is for preheating device before boiler feed water.
4. according to the rare earth exhaust treatment system described in claim 1 to 3 any one, it is characterized in that: described ammonia spray tower comprises tower body, there is tail gas outlet on tower body top, exhaust gas inlet and shower water outlet are arranged at bottom, in tower body, topmost has steam diffusion barrier, steam diffusion barrier below is laminated with the spray chamber that is no less than two, and spray chamber includes shower and is positioned at the packing layer of shower below; There is condensation reflux unit in described tail gas exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320838922.0U CN203620498U (en) | 2013-12-19 | 2013-12-19 | Rare-earth waste gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320838922.0U CN203620498U (en) | 2013-12-19 | 2013-12-19 | Rare-earth waste gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620498U true CN203620498U (en) | 2014-06-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320838922.0U Withdrawn - After Issue CN203620498U (en) | 2013-12-19 | 2013-12-19 | Rare-earth waste gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620498U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638803A (en) * | 2013-12-19 | 2014-03-19 | 宜兴新威利成稀土有限公司 | Rare-earth waste gas treatment system |
| CN104056523A (en) * | 2014-07-07 | 2014-09-24 | 宁波复能新材料股份有限公司 | System for processing exhaust gas of rare earth electrolysis process |
| CN110252095A (en) * | 2019-07-26 | 2019-09-20 | 李明东 | A kind of concentrated sulfuric acid decomposes the processing method for the acid waste gas that rare earth ore concentrate generates |
-
2013
- 2013-12-19 CN CN201320838922.0U patent/CN203620498U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103638803A (en) * | 2013-12-19 | 2014-03-19 | 宜兴新威利成稀土有限公司 | Rare-earth waste gas treatment system |
| CN103638803B (en) * | 2013-12-19 | 2015-07-15 | 宜兴新威利成稀土有限公司 | Rare-earth waste gas treatment system |
| CN104056523A (en) * | 2014-07-07 | 2014-09-24 | 宁波复能新材料股份有限公司 | System for processing exhaust gas of rare earth electrolysis process |
| CN110252095A (en) * | 2019-07-26 | 2019-09-20 | 李明东 | A kind of concentrated sulfuric acid decomposes the processing method for the acid waste gas that rare earth ore concentrate generates |
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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 |
Granted publication date: 20140604 Effective date of abandoning: 20150715 |
|
| RGAV | Abandon patent right to avoid regrant |