CN202654912U - Device for recycling phosphoric acid in active carbon tail gas by using phosphoric acid way - Google Patents
Device for recycling phosphoric acid in active carbon tail gas by using phosphoric acid way Download PDFInfo
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- CN202654912U CN202654912U CN 201220286959 CN201220286959U CN202654912U CN 202654912 U CN202654912 U CN 202654912U CN 201220286959 CN201220286959 CN 201220286959 CN 201220286959 U CN201220286959 U CN 201220286959U CN 202654912 U CN202654912 U CN 202654912U
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- phosphoric acid
- absorption tower
- tail gas
- active carbon
- water pump
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Abstract
The utility model relates to a device for recycling phosphoric acid in active carbon tail gas by using a phosphoric acid way. The device comprises a carbonization furnace tail part connecting member, a gas flue, a first-level spraying packing absorption tower, a second-level spraying packing absorption tower, a fan, a chimney, a recycle acid pond, a water pump and a frame filter, wherein the carbonization furnace tail part connecting member, the chimney, the first-level spraying packing absorption tower, the second-level spraying packing absorption tower, the fan and the chimney are communicated sequentially through pipelines; both the first-level spraying packing absorption tower and the second-level spraying packing absorption tower form a circulatory connection with the recycle acid pond through pipelines and the water pump; and the recycle acid pond is also connected with the frame filter through the water pump and a pipeline. By adoption of the utility model, the practice shows that most phosphoric acid in the active carbon tail gas can be recycled by using the phosphoric acid way. Therefore, the phosphoric acid recycle rate is improved, and the device for recycling the phosphoric acid in the active carbon tail gas by using the phosphoric acid way can be applied to the production of food-level active carbon.
Description
Technical field
The utility model relates to the phosphoric acid reclaimer in a kind of activated carbon of phosphoric acid method tail gas.
Background technology
At present, usually adopt the internal heat type converter to produce activated carbon of phosphoric acid method, but also there is drawback in the internal heat type converter, phosphoric acid can be taken away along with high-temperature flue gas, thereby causes the consumption of phosphoric acid to increase.At Granted publication CN201235274Y, name is called in " a kind of process the environmental protecting device with non-metal electrode electrostatic field that waste gas is used ", utilize finish up the back and forth phosphoric acid of gas of static demist method, this Apparatus and method for shows that through practice the rate of recovery of phosphoric acid tail gas is at most also only about 60%.The acid of producing active carbon by phosphoric acid method consumption forms the metal phosphate except a part and metal ion in the wood chip, this part seldom, active carbon per ton need to consume phosphoric acid about 0.05 ton; A part is discharged into the atmosphere along with high-temperature tail gas exactly in addition, and this part is the main cause that phosphoric acid consumes in the active carbon, and active carbon per ton need to consume phosphoric acid about the 0.1-0.2 ton.
Summary of the invention
The purpose of this utility model provides and can improve the phosphoric acid rate of recovery, and can be applicable to the phosphoric acid reclaimer in a kind of activated carbon of phosphoric acid method tail gas of food-grade Activated Carbon Production.
The technical scheme that the utility model is taked is: the phosphoric acid reclaimer in a kind of activated carbon of phosphoric acid method tail gas, it is characterized in that it comprises retort afterbody connector, flue, one-level spraying filler absorption tower, secondary spraying filler absorption tower, blower fan, chimney, recycle acid pond, water pump and plate filter, retort afterbody connector, flue, one-level spraying filler absorption tower, secondary spraying filler absorption tower, blower fan and chimney are connected successively by pipeline; One-level spraying filler absorption tower and secondary spraying filler absorption tower all form circulation by pipeline, water pump with the recycle acid pond and are connected; The recycle acid pond also is connected with plate filter by water pump, pipeline.
Adopt the utility model, trample factually and show, can reclaim the phosphoric acid in the activated carbon of phosphoric acid method tail gas is most of, thereby improve the phosphoric acid rate of recovery, and can be applied to the food-grade Activated Carbon Production.
Description of drawings
Fig. 1 is still uninstalled schematic diagram of the utility model.
Sequence number represents among the figure: retort afterbody connector 1, flue 2, one-level spraying filler absorption tower 3, secondary spraying filler absorption tower 4, recycle acid pond 5, water pump 6, blower fan 7, chimney 8 and plate filter 9.
The specific embodiment
The utility model is described in further detail below in conjunction with specific embodiment.
With reference to Fig. 1, it comprises retort afterbody connector 1, flue 2, one-level spraying filler absorption tower 3, secondary spraying filler absorption tower 4, blower fan 7, chimney 8, recycle acid pond 5, water pump 6 and plate filter 9 phosphoric acid reclaimer in this activated carbon of phosphoric acid method tail gas, and retort afterbody connector 1, flue 2, one-level spraying filler absorption tower 3, secondary spraying filler absorption tower 4, blower fan 7 and chimney 8 are connected successively by pipeline; Are connected with secondary spraying filler absorption tower all and form circulation by pipeline, water pump 6 with recycle acid pond 5 and be connected in one-level spraying filler absorption tower 3; Recycle acid pond 5 also is connected with plate filter 9 by water pump 6, pipeline.
During use, when out about 100 ℃ tail gas from retort afterbody connector 1, through after the sedimentation of flue 2, carbon granule and dust are retained down, the hot flue gas that contains phosphoric acid tail gas passes in the one-level spraying filler absorption tower 3, contain certain density phosphoric acid through the sour water after once spraying, but still lower, the concentration that must circulated sprinkling could improve gradually phosphoric acid, therefore the low concentration acid solution behind the spray can enter recycle acid pond 5, then by water pump 6 acid solution is wherein squeezed in the one-level spraying filler absorption tower 3 again, continue to absorb phosphoric acid as absorption liquid, after reaching 10～15 Baume degrees concentration, concentration saturated vapor pressure and the phosphoric acid gas in the acid mist of phosphoric acid liquid reach a balance, and at this moment continuing spray will not have effect, therefore when liquid reaches this concentration, just these sour waters are entered plate filter 9 by water pump 6, remove the insoluble impurities such as tar wherein, give over to batching and use.The phosphoric acid that also has considerable part through the inside of the phosphoric acid acid mist behind the one-level spray still in flue gas, therefore must carry out secondary absorption.Through the tail gas behind the one-level spraying filler absorption tower 3 from the top of tower along with pipeline is introduced secondary spraying filler absorption tower 4, after the processing identical with one-level filler spray column 3,90% above phosphoric acid in the tail gas is absorbed complete substantially, then, is incorporated into chimney 8 by blower fan 7 and emits.
Reached the requirement of food grade phosphoric acid by the impurity metal ion in the phosphoric acid of 10～15 Baume degrees obtained above, after plate filter 9 filtrations, after sour water is concentrated to 40 Baume degrees, with the impregnating ratio 1.7:1 wood chip of kneading, the methylene blue value of the active carbon that obtains after the charcoal activation is 17mL/0.1g, the caramel percent of decolourization is about 110%, and is substantially suitable with the result of food grade phosphoric acid charcoal activation test.
Claims (1)
1. the phosphoric acid reclaimer in the activated carbon of phosphoric acid method tail gas, it is characterized in that it comprises retort afterbody connector, flue, one-level spraying filler absorption tower, secondary spraying filler absorption tower, blower fan, chimney, recycle acid pond, water pump and plate filter, retort afterbody connector, flue, one-level spraying filler absorption tower, secondary spraying filler absorption tower, blower fan and chimney are connected successively by pipeline; One-level spraying filler absorption tower and secondary spraying filler absorption tower all form circulation by pipeline, water pump with the recycle acid pond and are connected; The recycle acid pond also is connected with plate filter by water pump, pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220286959 CN202654912U (en) | 2012-06-19 | 2012-06-19 | Device for recycling phosphoric acid in active carbon tail gas by using phosphoric acid way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220286959 CN202654912U (en) | 2012-06-19 | 2012-06-19 | Device for recycling phosphoric acid in active carbon tail gas by using phosphoric acid way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202654912U true CN202654912U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220286959 Expired - Fee Related CN202654912U (en) | 2012-06-19 | 2012-06-19 | Device for recycling phosphoric acid in active carbon tail gas by using phosphoric acid way |
Country Status (1)
| Country | Link |
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| CN (1) | CN202654912U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112836A (en) * | 2013-01-30 | 2013-05-22 | 项瑞芳 | Method for recycling phosphoric acid in tail gas generated in process of producing activated carbon by phosphoric acid process and utilizing afterheat of tail gas |
| CN103446851A (en) * | 2013-08-21 | 2013-12-18 | 泉州市天龙环境工程有限公司 | Recovery and purification device and method for phosphoric acid from tail gases generated in chemical method activated carbon production process |
| CN104437062A (en) * | 2014-12-17 | 2015-03-25 | 福建元力活性炭股份有限公司 | Device and method for recovering phosphoric acid from phosphoric-acid-method activated carbon tail gas |
| CN107551718A (en) * | 2017-09-27 | 2018-01-09 | 湖州南丰机械制造有限公司 | A kind of concentration casting workshop for being provided with centralized dust-removing system |
| CN109279589A (en) * | 2018-11-09 | 2019-01-29 | 贵州森环活性炭有限公司 | A kind of activated carbon of phosphoric acid method workshop high efficiente callback phosphoric acid plant |
-
2012
- 2012-06-19 CN CN 201220286959 patent/CN202654912U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112836A (en) * | 2013-01-30 | 2013-05-22 | 项瑞芳 | Method for recycling phosphoric acid in tail gas generated in process of producing activated carbon by phosphoric acid process and utilizing afterheat of tail gas |
| CN103112836B (en) * | 2013-01-30 | 2014-12-17 | 项瑞芳 | Method for recycling phosphoric acid in tail gas generated in process of producing activated carbon by phosphoric acid process and utilizing afterheat of tail gas |
| CN103446851A (en) * | 2013-08-21 | 2013-12-18 | 泉州市天龙环境工程有限公司 | Recovery and purification device and method for phosphoric acid from tail gases generated in chemical method activated carbon production process |
| CN104437062A (en) * | 2014-12-17 | 2015-03-25 | 福建元力活性炭股份有限公司 | Device and method for recovering phosphoric acid from phosphoric-acid-method activated carbon tail gas |
| CN107551718A (en) * | 2017-09-27 | 2018-01-09 | 湖州南丰机械制造有限公司 | A kind of concentration casting workshop for being provided with centralized dust-removing system |
| CN109279589A (en) * | 2018-11-09 | 2019-01-29 | 贵州森环活性炭有限公司 | A kind of activated carbon of phosphoric acid method workshop high efficiente callback phosphoric acid plant |
| CN109279589B (en) * | 2018-11-09 | 2023-12-12 | 贵州森环活性炭有限公司 | Phosphoric acid method active carbon production workshop high-efficient phosphoric acid recovery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20160619 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |