CN202605961U - Ammonium dihydrogen phosphate production tail gas processing system - Google Patents
Ammonium dihydrogen phosphate production tail gas processing system Download PDFInfo
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- CN202605961U CN202605961U CN 201220242268 CN201220242268U CN202605961U CN 202605961 U CN202605961 U CN 202605961U CN 201220242268 CN201220242268 CN 201220242268 CN 201220242268 U CN201220242268 U CN 201220242268U CN 202605961 U CN202605961 U CN 202605961U
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Abstract
An ammonium dihydrogen phosphate production tail gas processing system provides a device for processing tail gas produced in the ammonium dihydrogen phosphate production process. The device comprises a drying cyclone dust remover, a dust collection cyclone dust collector, a pelleting prewashing tower, a pelleting dust collection washing tower, a drying washing tower, a tail gas washing tower, a pelleting fan, a drying fan, a pelleting prewashing pump, a pelleting dust collection washing pump, a drying washing pump, a tail gas washing pump and a tail gas chimney. Each washing tower is provided with a venturi pipe and a spraying system, a rotational flow plate foam remover is further arranged on the tail gas washing tower, and a temperature, pressure and flow monitor is respectively arranged on pipelines at two ends around each washing tower and is connected into a distributed control system (DCS)/ fire control system (FCS). The system is simple in technical process, convenient to use, easy to modify and high in automation degree. By means of the technology, the process is good in tail gas washing effect, achieves advanced level in the same industry and simultaneously achieves the aims of saving energy and reducing consumption.
Description
Technical field
The utility model relates to Chemical Manufacture, is specially a kind of device that the tail gas that produces in the ammonium phosphate production process flow process is handled.
Background technology
Chemical industry always is manufacture very important in the commercial production, because the waste gas, waste water and the waste residue that are produced in its production process all have very strong pollution character, polluting with administering is the emphasis and the difficult point of most of chemical enterprise.The phosphorus ammonium is by phosphoric acid by wet process and ammonia react; Form through preneutralization, tubular reactor, granulation, drying, fragmentation, screening, cooling; Produce a large amount of dried tail gas, tail gas generated by granulation, cooled exhaust gas, dedusting tail gas etc. in process of production; Its complicated component mainly contains poisonous, harmful substances such as dust, ammonia, fluorine, severe contamination environment.At present, most of phosphorus ammonium manufacturing enterprise adopts pickling, bag-type dust or " doing wet " to combine processing method, but strict gradually along with to the industrial discharge standard; Present measure can not meet the demands; Therefore, need improve, to adapt to energy conservation and environment protection to prior art.
The utility model content
The technical problem that the utility model solved is to provide a kind of phosphorus ammonium to produce exhaust treatment system, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solved adopts following technical scheme to realize:
The phosphorus ammonium is produced exhaust treatment system; Comprise dry cyclone dust collectors, the cyclone dust collectors that gather dust, granulation prewashing column, granulation gather dust scrubbing tower, dry scrubbing tower, tail gas washing tower, granulation blower fan, drying air fan, granulation pre-wash pump, granulation gather dust washing pump, dry washing pump, washing tail gas pump and tail gas funnel; Said dry cyclone dust collectors connect dry scrubbing tower, and the cyclone dust collectors that gather dust connect the granulation scrubbing tower that gathers dust, and the granulation prewashing column connects the granulation scrubbing tower that gathers dust; Granulation is gathered dust scrubbing tower through granulation blower fan connection tail gas washing tower; Dry scrubbing tower connects tail gas washing tower through drying air fan, and tail gas washing tower connects tail gas funnel, wherein; Granulation prewashing column and granulation pre-wash pump are formed the loop; Granulation scrubbing tower and the granulation washing pump that gathers dust that gathers dust is formed the loop, and dry scrubbing tower is formed the loop with dry washing pump, tail gas washing tower and washing tail gas pump composition loop; Be equipped with Venturi tube and spray system on each scrubbing tower, on tail gas washing tower, also be provided with eddy flow plate demister.
In the utility model, each scrubbing tower is pipeline with connected mode between the washing pump and is connected.
In the utility model, be provided with temperature, pressure, flow monitoring on the pipeline of each scrubbing tower rear and front end, and insert DCS/FCS (scattered control system/field bus control system) system.
In the utility model, flow to irreversible in the pipeline.
Beneficial effect: this novel technological process is simple, and is easy to use, and repacking is easy, and automatization level is high.After adopting present technique, washing tail gas is effective, and efficiency of dust collection is greater than 99%, and ammonia recovery is greater than 99%, and fluorine removing rate is greater than 95%), reach advanced level of the same trade, can save energy simultaneously.
Description of drawings
Fig. 1 is the structural representation of the utility model preferred embodiment.
Among the figure: granulation prewashing column 1, granulation gather dust scrubbing tower 2, dry scrubbing tower 3, tail gas washing tower 4, granulation blower fan 5, drying air fan 6, granulation pre-wash pump 7, granulation gather dust washing pump 8, dry washing pump 9, washing tail gas pump 10, tail gas funnel 11.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Produce exhaust treatment system referring to the phosphorus ammonium of Fig. 1, comprise dry cyclone dust collectors, the cyclone dust collectors that gather dust, granulation prewashing column 1, granulation gather dust scrubbing tower 2, dry scrubbing tower 3, tail gas washing tower 4, granulation blower fan 5, drying air fan 6, granulation pre-wash pump 7, granulation gather dust washing pump 8, dry washing pump 9, washing tail gas pump 10 and tail gas funnel 11.
In the utility model, carry out the granulation prewashing column to producing more reaction, the tail gas generated by granulation of ammonia effusion, absorb the back with sulfuric acid, phosphoric acid washing and together get into granulation dedusting scrubbing tower with dedusting tail gas, gas wash tower again truncates; Drying machine tail gas gets into tail gas washing tower through dry cyclone dust collectors, dry scrubbing tower with acidic cleaning liquid washing back; Above-mentioned gas just discharges through tail gas funnel after tail gas washing tower washs absorption respectively with a small amount of sulfuric acid, fresh water (FW).The tail gas such as ammonia, fluorine, dirt that contain that this technology will be reacted, granulation partly produces are handled the back qualified discharge to greatest extent, have increased the rate of recovery of ammonia effectively, have reduced the pollution of harmful substance to environment.
Granulation and preneutralization tail gas: granulation and preneutralization tail gas contain a large amount of ammonia, dirt; Absorb with phosphoric acid, sulfuric acid, the washing of cleaning solution secondary with after removing the components such as grit and ammonia in the gas phase through granulation prewashing column, the granulation scrubbing tower that gathers dust, deliver to tail gas washing tower by the granulation blower fan.
Dried tail gas: the dried tail gas through behind the cyclone dust collectors contains a certain amount of ammonia, fluorine and dust; Get into dry scrubbing tower; The cleaning solution that contains phosphoric acid and sulfuric acid with a large amount of washs, and after removing components such as grit and ammonia in the gas phase, delivers to tail gas washing tower by drying air fan.
Tail gas gathers dust: the dusty gas in all solids material setting point is delivered to granulation by blower fan and is gathered dust scrubbing tower with phosphoric acid, sulfuric acid, cleaning solution washing absorption after dedusting cyclone dust removal, and tail gas is delivered to exhaust scrubber by the granulation blower fan.
Cooled exhaust gas: tail gas generated by granulation, dried tail gas, dedusting tail gas after cooled exhaust gas after the cyclone dust collectors dedusting and secondary washing merge the back and get into tail gas washing tower; Wash through pipeline churning tower with vitriolated washings at tail gas washing tower; Use the technology water washing again; After fluorine, ammonia, dirt etc. are up to standard, behind the further separate entrained droplet of cyclone by the chimney qualified discharge.
The utility model can reach following effect:
Reach advanced level of the same trade.This new technique adopts two, three grades of washings (different vent gas treatment progression are different); In the end the one-level tail gas washing tower is provided with eddy flow plate demister simultaneously, and optimizes each tower venturi, trunnion and cell body spray facility, facts have proved; Reach best clean result, reach advanced level of the same trade.
Energy-saving and cost-reducing, meet national industrial policies.This new technique is more domestic of the same type, short with scale device flow process, and equipment is few, and energy consumption is low.With 600,000 tons of/year monoammonium phosphate devices is example, and washing system per hour reduces 245KW than domestic device power consumption of the same type, annually is enterprise's 176.4 ten thousand degree electricity that economize on electricity, and energy-saving effect is very remarkable; The device cycle of operation is long; Domestic device general continuous of the same type running time is 7～10 days, and present technique can guarantee that operation continuously 15 days need clean with the top, and be 1.7 times of other colleague service cycle; Improve production stability, security greatly; Reduce maintenance cost, reduce production cost, increase the performance of enterprises.
Environmental benefit is good.Micro-ammonia, dust and the fluorine of overflowing in the phosphorus ammonium production process obtains reclaiming in efficient treatment system; Adopt this new technique; Detersive efficiency improves (efficiency of dust collection is greater than 99%, and ammonia recovery is greater than 99%, and fluorine removing rate is greater than 95%) greatly; Make the inside and outside production environment in ammonium phosphate plant room obviously be better than other monoammonium phosphate devices, produce environmental benefit preferably.
More than show and described the advantage of basic principle, principal character and the utility model of the utility model.The technical staff of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model protection defined by the appended claims and their equivalents defined
.
Claims (2)
1. the phosphorus ammonium is produced exhaust treatment system; It is characterized in that comprise dry cyclone dust collectors, the cyclone dust collectors that gather dust, granulation prewashing column, granulation gather dust scrubbing tower, dry scrubbing tower, tail gas washing tower, granulation blower fan, drying air fan, granulation pre-wash pump, granulation gather dust washing pump, dry washing pump, washing tail gas pump and tail gas funnel, said dry cyclone dust collectors connect dry scrubbing tower; The cyclone dust collectors that gather dust connect the granulation scrubbing tower that gathers dust; The granulation prewashing column connects the granulation scrubbing tower that gathers dust, and the granulation scrubbing tower that gathers dust connects tail gas washing tower through the granulation blower fan, and dry scrubbing tower is through drying air fan connection tail gas washing tower; Tail gas washing tower connects tail gas funnel; Wherein, granulation prewashing column and granulation pre-wash pump are formed the loop, granulation scrubbing tower and the granulation washing pump composition loop of gathering dust of gathering dust; Dry scrubbing tower and dry washing pump are formed the loop; Tail gas washing tower and washing tail gas pump are formed the loop, are equipped with Venturi tube and spray system on each scrubbing tower, on tail gas washing tower, also are provided with eddy flow plate demister.
2. phosphorus ammonium according to claim 1 is produced exhaust treatment system, it is characterized in that, in the utility model, is provided with temperature, pressure, flow monitoring on the pipeline of each scrubbing tower rear and front end, and inserts the DCS/FCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242268 CN202605961U (en) | 2012-05-28 | 2012-05-28 | Ammonium dihydrogen phosphate production tail gas processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242268 CN202605961U (en) | 2012-05-28 | 2012-05-28 | Ammonium dihydrogen phosphate production tail gas processing system |
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| CN202605961U true CN202605961U (en) | 2012-12-19 |
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| CN 201220242268 Expired - Fee Related CN202605961U (en) | 2012-05-28 | 2012-05-28 | Ammonium dihydrogen phosphate production tail gas processing system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353337A (en) * | 2014-10-09 | 2015-02-18 | 宜兴市凯特净化设备有限公司 | Recovery processing system and processing method for ammonia-containing waste gas |
| CN105013310A (en) * | 2015-07-08 | 2015-11-04 | 瓮福（集团）有限责任公司 | Ammonium phosphate granulating tail gas washing device and method |
| CN105457449A (en) * | 2015-12-14 | 2016-04-06 | 湖北华毅化工有限公司 | Ammonium phosphate tail gas washing system and washing technology |
| CN112933826A (en) * | 2021-01-28 | 2021-06-11 | 云南中正化学工业有限公司 | Tail gas recycling method for compound fertilizer production |
-
2012
- 2012-05-28 CN CN 201220242268 patent/CN202605961U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353337A (en) * | 2014-10-09 | 2015-02-18 | 宜兴市凯特净化设备有限公司 | Recovery processing system and processing method for ammonia-containing waste gas |
| CN105013310A (en) * | 2015-07-08 | 2015-11-04 | 瓮福（集团）有限责任公司 | Ammonium phosphate granulating tail gas washing device and method |
| CN105457449A (en) * | 2015-12-14 | 2016-04-06 | 湖北华毅化工有限公司 | Ammonium phosphate tail gas washing system and washing technology |
| CN112933826A (en) * | 2021-01-28 | 2021-06-11 | 云南中正化学工业有限公司 | Tail gas recycling method for compound fertilizer production |
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| 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: 20121219 Termination date: 20150528 |
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| EXPY | Termination of patent right or utility model |