CN209464738U - A kind of device for realizing Cyanuric Chloride tail gas recycling - Google Patents
A kind of device for realizing Cyanuric Chloride tail gas recycling Download PDFInfo
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- CN209464738U CN209464738U CN201821986398.0U CN201821986398U CN209464738U CN 209464738 U CN209464738 U CN 209464738U CN 201821986398 U CN201821986398 U CN 201821986398U CN 209464738 U CN209464738 U CN 209464738U
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Abstract
The utility model belongs to Cyanuric Chloride technical field in fine chemistry industry, provides a kind of device for realizing Cyanuric Chloride tail gas recycling, including dust-extraction unit, Alkali absorption device and dechlorination cyanogen device.The device of the utility model realizes Cyanuric Chloride containing Cyanuric Chloride, cyanogen chloride, the processing of chlorine tail gas hazard-free, pernicious gas in Cyanuric Chloride is by bag-type dust, Alkali absorption, the processing of dechlorination cyanogen, by the Cyanuric Chloride product separation in tail gas, chlorine in tail gas reacts the sodium hypochlorite for being converted into high added value with sodium hydroxide, cyanogen chloride reuse is used as raw material into Cyanuric Chloride technique, more existing conventional equipment tail gas realizes the recycling of the three wastes, have many advantages, such as that processing cost is low, high treating effect, three wastes valueization.
Description
Technical field
The utility model belongs to Cyanuric Chloride technical field in fine chemistry industry, is related to a kind of realization Cyanuric Chloride tail gas resource
The device of change.
Background technique
In Cyanuric Chloride production process, monomer cyanogen chloride polymerize to obtain gaseous Cyanuric Chloride in polyfurnace high temperature, then
It meets with dry cold air, condensation becomes solid Cyanuric Chloride, can constantly generate tail gas in process of production.It is removed in the tail gas
Also containing the chlorine etc. excessively put into unpolymerized cyanogen chloride monomer, a small amount of Cyanuric Chloride and previous step process outside air
Toxic gas can cause great harm environment if being directly discharged in atmosphere, also not meet the mark of national gas discharge
It is quasi-.
The prior art uses Alkali absorption, the processing modes such as innoxious, but need to put into the resources such as raw material, equipment, manpower, makes to produce
The increased costs of product.Contain harmful substance in Alkali absorption liquid, it also can not direct emission, it is still necessary to enter waste liquid environment-friendly disposal system
Middle further progress harmless treatment, and more difficult complete processing.
It is had the disadvantage that in the traditional treatment method of the Tail Gas generated in Cyanuric Chloride production process
(1) tail gas treatment process route is long, equipment is cumbersome；
(2) resources, higher cost such as consumption of raw material, equipment, artificial；
(3) it handles second-rate.
Utility model content
To solve the problems, such as traditional handicraft, the utility model provides a kind of Cyanuric Chloride tail gas synthesis hypochlorous acid
Sodium treatment process, realizes Cyanuric Chloride polymerization tail gas recycling, and harmful tail gas is changed into the valuable byproduct of tool.It mentions
A kind of Cyanuric Chloride tail gas recycles to obtain the sodium hypochlorite of by-product and realizes chlorination by bag-type dust-tail gas absorption-degassing out
Cyanogen recycles, and can significantly reduce production cost, improves byproduct profit, while saving processing step and production equipment.
The technical solution of the utility model includes:
A kind of device for realizing Cyanuric Chloride tail gas recycling, including dust-extraction unit, Alkali absorption device and dechlorination cyanogen dress
It sets；
The dust-extraction unit includes bag filter 1, and Cyanuric Chloride tail gas enters cloth through bag filter air inlet 2
Bag dust collector 1, Cyanuric Chloride tail gas realize that solid-state Cyanuric Chloride is separated with gas chlorination cyanogen, chlorine in bag filter 1, Gu
State Cyanuric Chloride is discharged from bag filter feed opening 4, and gas chlorination cyanogen and chlorine enter alkali through bag filter gas outlet 3 and inhales
In receiving apparatus；
The Alkali absorption device includes the first alkali adsorption tower 5, the second alkali adsorption tower 7 and third alkali adsorption tower 9, each
Alkali adsorption tower changes between level-one alkali adsorption tower, second level alkali adsorption tower, stand-by still；First alkali adsorption tower, 5 bottom and top pass through
Pipeline is connected, and pipeline is equipped with first circulation pump 6, realizes alkali interior circulation in the first alkali adsorption tower 5；First alkali adsorption tower 5
Top is equipped with gas vent, is switched between the first tail gas gas outlet and cyanogen chloride exhaust outlet by valve；First tail gas goes out
Port is connected by pipeline with the second tail gas air intake of the second alkali adsorption tower 7；Cyanogen chloride exhaust outlet and Cyanuric Chloride technique
Middle feed(raw material)inlet is connected, and recycles as raw material；Internal recycle pipeline connection alkali is passed through pipeline, is controlled by valve to the first alkali
Lye is added in absorption tower 5；The pipeline connection type of second alkali adsorption tower 7 and third alkali adsorption tower 9 and the first alkali adsorption tower 5
Pipeline connection type is identical；The tail gas come out from bag filter gas outlet 3 is entered to by pipeline through the first tail gas air intake
In first alkali adsorption tower 5；The gas come out at the top of third alkali adsorption tower 9, into Cyanuric Chloride technique as raw material or entrance
First alkali adsorption tower 5 is handled again；
The dechlorination cyanogen device includes dechlorination cyanogen device 11, from the first alkali adsorption tower 5, the second alkali adsorption tower 7 and
The sodium hypochlorite semi-finished product of three alkali adsorption towers, 9 bottom solid outlet discharge, which are passed through through pipeline into dechlorination cyanogen device 11, to be handled, and is located
Finished product sodium hypochlorite after reason is discharged through sodium hypochlorite discharge port 12, and the cyanogen chloride gas of vacuum removal dissolution in the solution returns
It is recycled into Cyanuric Chloride technique as raw material.
The utility model has the beneficial effects that the utility model provides a kind of dress for realizing Cyanuric Chloride tail gas recycling
It sets, realize Cyanuric Chloride is handled containing Cyanuric Chloride, cyanogen chloride, chlorine tail gas hazard-free, the pernicious gas warp in Cyanuric Chloride
Cloth bag dedusting, Alkali absorption, the processing of dechlorination cyanogen, the Cyanuric Chloride product in tail gas are separated, the chlorine and hydrogen-oxygen in tail gas
Change the sodium hypochlorite that sodium reaction is converted into high added value, cyanogen chloride reuse is used as raw material into Cyanuric Chloride technique, more existing normal
Rule device exhaust realizes the recycling of the three wastes, has many advantages, such as that processing cost is low, high treating effect, three wastes valueization.
Detailed description of the invention
Fig. 1 is a kind of device flow chart for realizing Cyanuric Chloride tail gas recycling of the utility model.
In figure: 1 bag filter；2 bag filter air inlets；3 bag filter gas outlets；4 bag filter blankings
Mouthful；5 first alkali adsorption towers；6 first circulations pump；7 second alkali adsorption towers；8 second circulations pump；9 third alkali adsorption towers；10 thirds are followed
Ring pump；11 dechlorination cyanogen devices；12 sodium hypochlorite discharge ports；13 vacuum pipelines；14 blow-down pipes.
Specific embodiment
Below in conjunction with technical solution and attached drawing, specific embodiment of the present utility model is further illustrated.
A kind of device for realizing Cyanuric Chloride tail gas recycling, including dust-extraction unit, Alkali absorption device and dechlorination cyanogen dress
It sets；
The dust-extraction unit includes bag filter 1, and Cyanuric Chloride tail gas enters cloth through bag filter air inlet 2
Bag dust collector 1, Cyanuric Chloride tail gas realize that solid-state Cyanuric Chloride is separated with gas chlorination cyanogen, chlorine in bag filter 1, Gu
State Cyanuric Chloride is discharged from bag filter feed opening 4, and gas chlorination cyanogen and chlorine enter alkali through bag filter gas outlet 3 and inhales
In receiving apparatus；
The Alkali absorption device includes the first alkali adsorption tower 5, the second alkali adsorption tower 7 and third alkali adsorption tower 9, each alkali
Absorption tower changes between level-one alkali adsorption tower, second level alkali adsorption tower, stand-by still；First alkali adsorption tower, 5 bottom and top pass through pipe
Road is connected, and pipeline is equipped with first circulation pump 6, realizes alkali interior circulation in the first alkali adsorption tower 5；First alkali adsorption tower 5 top
Portion is equipped with gas vent, is switched between the first tail gas gas outlet and cyanogen chloride exhaust outlet by valve；First tail gas outlet
Mouth is connected by pipeline with the second tail gas air intake of the second alkali adsorption tower 7；In cyanogen chloride exhaust outlet and Cyanuric Chloride technique
Feed(raw material)inlet is connected, and recycles as raw material；Internal recycle pipeline connection alkali is passed through pipeline, is controlled by valve to the first alkali and is inhaled
It receives in tower 5 and adds lye；The pipe of the pipeline connection type of second alkali adsorption tower 7 and third alkali adsorption tower 9 and the first alkali adsorption tower 5
Road connection type is identical；The tail gas come out through bag filter gas outlet 3 enters to the through the first tail gas air intake by pipeline
In one alkali adsorption tower 5；The gas come out at the top of third alkali adsorption tower 9, into Cyanuric Chloride technique as raw material or into the
One alkali adsorption tower 5 is handled again；
The dechlorination cyanogen device includes dechlorination cyanogen device 11, from the first alkali adsorption tower 5, the second alkali adsorption tower 7 and
The sodium hypochlorite semi-finished product of three alkali adsorption towers, 9 bottom solid outlet discharge, which are passed through through pipeline into dechlorination cyanogen device 11, to be handled, and is located
Finished product sodium hypochlorite after reason is discharged through sodium hypochlorite discharge port 12, and the cyanogen chloride gas of vacuum removal dissolution in the solution returns
It is recycled into Cyanuric Chloride technique as raw material.
Specific embodiment: Cyanuric Chloride chloride containing cyanogen, Cyanuric Chloride, chlorine tail gas recycling treatment process, three polychlorostyrene
Pernicious gas in cyanogen is recycled through bag-type dust-tail gas absorption-degassing, realizes the purpose of recycling, steps are as follows:
(1) bag-type dust: Cyanuric Chloride tail gas is passed through through bag filter air inlet 2 into bag filter 1, trimerization
Solid-state Cyanuric Chloride in chlorine cyanogen tail gas is separated with gas chlorination cyanogen, chlorine, and Cyanuric Chloride is as Product recycling from bag-type dust
The discharge of device feed opening 4 is collected, and gas chlorination cyanogen and chlorine go successively to subsequent processing；
(2) Alkali absorption: Alkali absorption includes three alkali adsorption towers, and each alkali adsorption tower is inhaled in level-one alkali adsorption tower, second level alkali
It receives and changes between tower, stand-by still；Firstly, will by condensed in two stages device processing after remaining gas by 5 tower bottom of the first alkali adsorption tower into
Enter in the first alkali adsorption tower 5, sprays sodium hydrate aqueous solution on 5 top of the first alkali adsorption tower, gas sufficiently connects with sodium hydroxide
Touching is reacted, and the chlorine in gas is reacted with sodium hydrate aqueous solution generates sodium hypochlorite, the Alkali absorption of 5 tower bottom of the first alkali adsorption tower
Liquid is passed through 5 tower top of the first alkali adsorption tower through 6 circulation of first circulation pump, realizes cyclic absorption；First alkali adsorption tower, 5 tower top residue gas
Body enters 7 tower bottom of the second alkali adsorption tower, realizes that gas second level absorbs, and the tower top residual gas in the second alkali adsorption tower 7 is mainly
Cyanogen chloride, cyanogen chloride are used as raw material to recycle as in Cyanuric Chloride technique；In the above process, the first alkali adsorption tower 5 is used as one
Grade alkali adsorption tower, the second alkali adsorption tower 7 are used as second level alkali adsorption tower, and third alkali adsorption tower 9 is used as stand-by still, and gas passes through second level
Alkali absorption, chlorine conversion are collected at sodium hypochlorite, and the cyanogen chloride separated is used again as raw material；When the first alkali is inhaled
When the pH for receiving Alkali absorption liquid in tower 5 is 12.5-13.5, reaction terminating；Close the admission line of the first alkali adsorption tower 5, and by
Semi-finished product liquor natrii hypochloritis in one alkali adsorption tower 5 is transferred in dechlorination cyanogen device 11；Then, the second alkali adsorption tower 7 is made
For level-one alkali adsorption tower, third alkali adsorption tower 9 is used as second level alkali adsorption tower, and the first alkali adsorption tower 5 is used as stand-by still, repeats above-mentioned
Alkali absorption operation；When semi-finished product liquor natrii hypochloritis's qualification in the second alkali adsorption tower 7, by the air inlet pipe of the second alkali adsorption tower 7
Line is closed；Again, it regard third alkali adsorption tower 9 as level-one alkali adsorption tower, the first alkali adsorption tower 5 is used as second level alkali adsorption tower, the
Two alkali adsorption towers 7 are used as stand-by still, and sodium hydroxide solution is put into the first alkali adsorption tower 5 and is recycled as two-level absorption tower and is inhaled
It receives, is used with continuous, the switching that this continues to repeat aforesaid operations three alkali adsorption towers of realization；
(3) dechlorination cyanogen: the sodium hypochlorite semi-finished product in step (2) are transferred in dechlorination cyanogen device 11, turn to close after material
Material inlet valve is closed, vacuum pipeline 13 is opened, further the cyanogen chloride of removing dissolution in the solution, the cyanogen chloride after removing are back to
It is recycled in Cyanuric Chloride technique as raw material.
Claims (1)
1. a kind of device for realizing Cyanuric Chloride tail gas recycling, which is characterized in that the realization Cyanuric Chloride tail gas recycling
Device includes dust-extraction unit, Alkali absorption device and dechlorination cyanogen device；
The dust-extraction unit includes bag filter (1), and Cyanuric Chloride tail gas enters cloth bag through bag filter air inlet (2)
Deduster (1), Cyanuric Chloride tail gas realize that solid-state Cyanuric Chloride is separated with gas chlorination cyanogen, chlorine in bag filter (1),
Solid-state Cyanuric Chloride is discharged from bag filter feed opening (4), gas chlorination cyanogen and chlorine through bag filter gas outlet (3) into
Enter in Alkali absorption device；
The Alkali absorption device includes the first alkali adsorption tower (5), the second alkali adsorption tower (7) and third alkali adsorption tower (9), each
Alkali adsorption tower changes between level-one alkali adsorption tower, second level alkali adsorption tower, stand-by still；First alkali adsorption tower (5) bottom and top are logical
Piping is connected, and pipeline is equipped with first circulation pump (6), realizes alkali interior circulation in the first alkali adsorption tower (5)；First alkali is inhaled
It receives and is equipped with gas vent at the top of tower (5), switched between the first tail gas gas outlet and cyanogen chloride exhaust outlet by valve；First
Tail gas gas outlet is connected by pipeline with the second tail gas air intake of the second alkali adsorption tower (7)；Cyanogen chloride exhaust outlet and trimerization
Feed(raw material)inlet is connected in chlorine cyanogen process；Internal recycle pipeline connection alkali is passed through pipeline, is controlled by valve to the first alkali adsorption tower
(5) lye is added in；The pipeline connection type of second alkali adsorption tower (7) and third alkali adsorption tower (9) and the first alkali adsorption tower (5)
Pipeline connection type it is identical；From bag filter gas outlet (3) come out tail gas by pipeline through the first tail gas air intake into
Enter into the first alkali adsorption tower (5)；
The dechlorination cyanogen device includes dechlorination cyanogen device (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821986398.0U CN209464738U (en) | 2018-11-29 | 2018-11-29 | A kind of device for realizing Cyanuric Chloride tail gas recycling |
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| CN201821986398.0U CN209464738U (en) | 2018-11-29 | 2018-11-29 | A kind of device for realizing Cyanuric Chloride tail gas recycling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195511A (en) * | 2020-01-17 | 2020-05-26 | 中国航空工业集团公司济南特种结构研究所 | Environment-friendly synthesis system of cyanate ester resin |
| CN114950105A (en) * | 2021-09-16 | 2022-08-30 | 深圳市图灵科创产业发展有限公司 | Chlorine gas multistage conversion treatment system and treatment method |
-
2018
- 2018-11-29 CN CN201821986398.0U patent/CN209464738U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195511A (en) * | 2020-01-17 | 2020-05-26 | 中国航空工业集团公司济南特种结构研究所 | Environment-friendly synthesis system of cyanate ester resin |
| CN111195511B (en) * | 2020-01-17 | 2021-05-11 | 中国航空工业集团公司济南特种结构研究所 | Environment-friendly synthesis system of cyanate ester resin |
| CN114950105A (en) * | 2021-09-16 | 2022-08-30 | 深圳市图灵科创产业发展有限公司 | Chlorine gas multistage conversion treatment system and treatment method |
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