CN205442663U - Follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production - Google Patents
Follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production Download PDFInfo
- Publication number
- CN205442663U CN205442663U CN201620217968.4U CN201620217968U CN205442663U CN 205442663 U CN205442663 U CN 205442663U CN 201620217968 U CN201620217968 U CN 201620217968U CN 205442663 U CN205442663 U CN 205442663U
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- Prior art keywords
- tower
- ammonia
- absorption
- analytic
- waste gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses a follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production, the system is including absorbing a tower, two towers of absorption, lean solution groove, analytic tower and ammonia recovery tower, and the lean solution inslot adds good ammonium phosphate and forms the absorption liquid, and absorption liquid pump is in proper order gone into two towers of absorption and is absorbed a tower, the analytic tower of pump income is analyzed after absorbing the absorption of two a towers and absorption tower, and pump income ammonia recovery tower is retrieved after the analysis. The utility model provides an exhaust -gas treatment difficult problem of the high -concentration ammonia gas that produces of present benzene cyanogen class device, the circulated apparatus for producing that is used for benzene cyanogen class of ammonia of recovery, absorption liquid monoammonium phosphate returns the lean solution groove and recycles, and the material recycles the consumption that has reduced the technology material, has protected the environment, has reduced the energy resource consumption, saves the engineering cost of whole device and uses.
Description
Technical field
This utility model relates to ammoniacal liquor reclaimer technical field, is specifically related to a kind of containing the system reclaiming ammonia in ammonia mother solution.
Background technology
Produce the waste gas produced in the device of benzene cyanogen series products at present to mainly contain: substantial amounts of ammonia, carbon dioxide, nitrogen and micro-benzene or the congener etc. of benzene.Owing in waste gas, ammonia level is relatively big, waste gas does not deal with and does not allows to be emitted into air, and the waste gas not processed can cause the significant wastage of raw material.The traditional treatment method of this kind of waste gas utilizes absorbing liquid to absorb ammonia, carbon dioxide and micro-benzene or the benzene etc. in waste gas, and traditional absorbing liquid is mainly selected: water, sulfuric acid solution and hydrochloric acid solution etc..Choosing mainly produces problems with when using water as absorbing liquid: the existence of carbon dioxide in waste gas reduces the water trap to ammonia, causes water consumption relatively big, produces the most accessible waste liquid amount more.When selecting sulfuric acid solution, hydrochloric acid solution as absorbing liquid, the saline solution containing benzene or the congener of benzene generated after absorption cannot be sold, can not recycle, and the material of equipment, pipeline and the pipe fitting that acidity absorbing liquid is to absorbing requires higher, especially the price of equipment, pipeline and the pipe fitting selected by the acid solution of chloride ion-containing is costly, causes expense bigger of absorption plant.
Existing equipment technical disadvantages: 1, select water bigger as the consumption of water during absorbing liquid, add whole waste gas recovering device engineering cost, select sulfuric acid solution and hydrochloric acid solution cannot process as the saline solution containing benzene or the congener of benzene produced during absorbing liquid and installation cost is higher；2, the trap of ammonia of the CO 2 reduction in waste gas, causes waste liquid amount to strengthen, and waste liquid cannot process, and causes rugged environment to pollute and great energy waste；3, it is absorbed in substantial amounts of ammonia in absorbing liquid to fail to be recycled, adds process stream consume.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, described system includes absorbing a tower, absorb two towers, lean liquid bath, Analytic Tower and recovery ammonia tower, add ammonium phosphate in described lean liquid bath and form absorbing liquid, absorbing liquid pumps into absorption two towers successively and absorbs a tower, described absorption two tower and absorption one tower pump into Analytic Tower after absorbing and resolve, pump into recovery ammonia tower after parsing to reclaim, described Analytic Tower relies on Analytic Tower vaporizer to control temperature, cooled down by Analytic Tower cooler, described recovery ammonia tower passes through recovery ammonia tower heat exchanger temperature control, cooled down by recovery ammonia tower cooler device.
The charging of described Analytic Tower is preheated by Analytic Tower feed preheater.
Described absorption two tower and absorbing connects between a tower and absorbs a tower reflux pump, absorbs a tower reactor liquid pump and carry out material exchange.
Described absorption one tower connects absorption one tower reflux cooler.
Described Analytic Tower vaporizer carries out heat exchange by Analytic Tower heat exchanger.
The beneficial effects of the utility model: 1, solve an exhaust-gas treatment difficult problem for the high concentration ammonia that current benzene cyanogen class device produces.2, the ammonia reclaimed is circularly used for the process units of benzene cyanogen class, and absorbing liquid-MAP returns lean liquid bath and recycles, and Matter Transfer uses the consumption reducing process stream.3, produce the waste water of the biochemical treatment delivered to of trace, poisonous and harmful waste liquid can not be processed and produce.4, the recycling of process stream decreases waste discharge, protects environment, reduces energy resource consumption, saves the engineering cost of whole device.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
In figure: 1-absorbs a tower, 2-absorbs two towers, 3-Analytic Tower, 4-recovery ammonia tower, 5-Analytic Tower vaporizer, 6-resolves liquid bath, 7-Analytic Tower cooler, 8-recovery ammonia tower cooler device, 9-absorbs a tower reflux cooler, the lean liquid bath of 10-, 11-Analytic Tower heat exchanger, 12-recovery ammonia tower heat exchanger, 13-absorbs a tower reflux pump, 14-absorbs a tower reactor liquid pump, 15-Analytic Tower feed preheater.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
nullAs shown in Figure 1，A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces，Described system includes absorbing a tower 1、Absorb two towers 2、Lean liquid bath 10、Analytic Tower 3 and recovery ammonia tower 4，Add ammonium phosphate in described lean liquid bath 10 and form absorbing liquid，Absorbing liquid pumps into absorption two tower 2 successively and absorbs a tower 1，Described absorption two tower 2 and absorption one tower 1 pump into Analytic Tower 3 after absorbing and resolve，Pump into recovery ammonia tower 4 after parsing to reclaim，Described Analytic Tower 3 relies on Analytic Tower vaporizer 5 to control temperature，Cooled down by Analytic Tower cooler 7，Described recovery ammonia tower 4 is by recovery ammonia tower heat exchanger 12 temperature control，Cooled down by recovery ammonia tower cooler device 8，Described Analytic Tower 3 is fed and is preheated by Analytic Tower feed preheater 15，Connect between described absorption two tower 2 and absorption one tower 1 and absorb a tower reflux pump 13、Absorb a tower reactor liquid pump 14 and carry out material exchange，Described absorption one tower 1 connects absorption one tower reflux cooler 9，Described Analytic Tower vaporizer 5 carries out heat exchange by Analytic Tower heat exchanger 11.
Operation principle: during work, first configures absorbing liquid: added ammonium phosphate in lean liquid bath 10, and sample analysis raw material phosphor acid amide concentration reaches 30%-35%；
nullOpen the terminal valve absorbing two tower lean pumps，To absorbing two tower 2 feedings，When absorb two tower 2 tower liquid levels be shown to liquidometer 60% time，Open the valve before and after absorption two tower reactor liquid pumps and pump，Feed to absorbing a tower 1，Control to absorb two tower 2 still liquid liquid levels at the 80% of liquidometer simultaneously，When absorb a tower 1 tower liquid level be shown to liquidometer 30% time，Open the valve before and after absorption one tower reflux pump 13 and pump，Absorb a tower reflux pump 13 properly functioning，When absorb a tower 1 tower liquid level be shown to liquidometer 80% time，Open the valve before and after absorption one tower reactor liquid pump 14 and pump，To desorber 3 feeding，Desorber 3 material conveying liquid measure is by absorbing a tower Liquid level (absorb the level stability of a tower 80%)，When the liquid level of desorber vaporizer 5 buries heat exchanger tube，Desorber vaporizer 5 leads to steam heating，Control the temperature 165 DEG C of desorber vaporizer 5；Desorber 3 adds the operation Stress control 0.55MPa of vapours, desorber 3 normal operating, Liquid level desorbing base of evaporator discharging, and discharging returns lean liquid bath 10 after heat exchanger；
When absorbing a tower 1, two towers 2 and Analytic Tower 3 stable after, waste gas enters absorption one, two towers, react with MAP in absorbing liquid at the ammonia absorbed in a tower in waste gas, in making tower, liquid temp rises, pH value also rises, open absorption one tower reflux cooler 9, logical cooling water, by strengthening capacity of returns, the rising of temperature of liquid in control tower, ammonia and the MAP in absorbing liquid react generation Diammonium phosphate (DAP), the pH value of tower liquid is risen to about 6.5 by the 4.5 of initial start-up, the pH value 6.5 of control tower liquid, the effect of desorber 3 is that Diammonium phosphate (DAP) decomposes ammonification and MAP, and ammonia is steamed recovery ammonia tower 4 reclaim, MAP returns to lean liquid bath reuse；
Check instrument and the valve of recovery ammonia tower 4 system: open the cooling water outlet and inlet valve of recovery ammonia tower top cooler 8, logical cooling water.Regulation recovery ammonia tower 4 temperature and pressure, open the steam inlet valve of recovery ammonia tower, begin to warm up liquid in tower, when after material boiling in tower, material steam rises along tower body, liquid is gradually hung on filler, in tower, liquid level declines, open desorbing liquid pump, recovery ammonia tower is entered after material is preheated, maintain tower reactor liquid level at the 50% of still liquidometer, after material steam arrives tower top, tower top temperature displays temperature rapidly rises to 122 DEG C, the a part of backflow that is condensed in recovery ammonia tower top cooler of material, the uncooled ammonia gas of another part passes through overhead extraction, control temperature≤40 DEG C of vapor-phase material, the operation pressure 0.5MPa of control tower, water sample in sample analysis tower, when tower reactor material meets the concentration of biochemical treatment waste water requirement, tower reactor starts discharging.
Above content is only to this utility model structure example and explanation; described specific embodiment is made various amendment or supplements or use similar mode to substitute by affiliated those skilled in the art; without departing from the structure of utility model or surmount scope defined in the claims, protection domain of the present utility model all should be belonged to.
Claims (5)
1. the new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, described system includes absorbing a tower (1), absorb two towers (2), lean liquid bath (10), Analytic Tower (3) and recovery ammonia tower (4), it is characterized in that, add ammonium phosphate in described lean liquid bath (10) and form absorbing liquid, absorbing liquid pumps into absorption two towers (2) successively and absorbs a tower (1), described absorption two tower (2) and absorption one tower (1) pump into Analytic Tower (3) after absorbing and resolve, pump into recovery ammonia tower (4) after parsing to reclaim, described Analytic Tower (3) relies on Analytic Tower vaporizer (5) to control temperature, cooled down by Analytic Tower cooler (7), described recovery ammonia tower (4) passes through recovery ammonia tower heat exchanger (12) temperature control, cooled down by recovery ammonia tower cooler device (8).
A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, it is characterised in that described Analytic Tower (3) charging is preheated by Analytic Tower feed preheater (15).
A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, it is characterized in that, described absorption two tower (2) and absorbing connects between a tower (1) and absorbs a tower reflux pump (13), absorbs a tower reactor liquid pump (14) and carry out material exchange.
A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, it is characterised in that described absorption one tower (1) connects absorption one tower reflux cooler (9).
A kind of new system reclaiming ammonia from the waste gas that benzene cyanogen class device produces, it is characterised in that described Analytic Tower vaporizer (5) carries out heat exchange by Analytic Tower heat exchanger (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217968.4U CN205442663U (en) | 2016-03-18 | 2016-03-18 | Follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620217968.4U CN205442663U (en) | 2016-03-18 | 2016-03-18 | Follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production |
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| Publication Number | Publication Date |
|---|---|
| CN205442663U true CN205442663U (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620217968.4U Withdrawn - After Issue CN205442663U (en) | 2016-03-18 | 2016-03-18 | Follow new system that retrieves ammonia in waste gas of benzene cyanogen class device production |
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| CN (1) | CN205442663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645436A (en) * | 2016-03-18 | 2016-06-08 | 安徽省化工设计院 | Novel system for recycling ammonia from waste gas produced by benzene and cyanogen device |
-
2016
- 2016-03-18 CN CN201620217968.4U patent/CN205442663U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645436A (en) * | 2016-03-18 | 2016-06-08 | 安徽省化工设计院 | Novel system for recycling ammonia from waste gas produced by benzene and cyanogen device |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160810 Effective date of abandoning: 20171017 |