CN202105563U - Hydrogen chloride gas circulatory recovery system - Google Patents
Hydrogen chloride gas circulatory recovery system Download PDFInfo
- Publication number
- CN202105563U CN202105563U CN2011201329272U CN201120132927U CN202105563U CN 202105563 U CN202105563 U CN 202105563U CN 2011201329272 U CN2011201329272 U CN 2011201329272U CN 201120132927 U CN201120132927 U CN 201120132927U CN 202105563 U CN202105563 U CN 202105563U
- Authority
- CN
- China
- Prior art keywords
- hydrogen chloride
- tank
- film tower
- circulating tank
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a hydrogen chloride gas circulatory recovery system, which is characterized in that a main body comprises a hydrogen chloride tail gas tank, a first-stage falling film tower, a second-stage falling film tower, a third-stage packing tower and a vacuum buffer tank forming a circulatory system; the hydrogen chloride tail gas tank, the first-stage falling film tower, the second-stage falling film tower and the third-stage packing tower are installed in parallel; the gas outlet of the vacuum buffer tank is connected with the gas inlet of a water ring vacuum unit; the discharge hole of the water ring vacuum unit is respectively connected to the feeding hole of a first circulatory tank, the feeding hole of a second circulatory tank and the feeding hole of a third circulatory tank; the discharge hole at the left side of the third circulatory tank is connected with a circulatory finished product tank; hydrogen chloride tail gas generated in the process of producing industrial sulphanilamide is absorbed through the structure in a circulatory manner; obtained hydrochloric acid can be repetitively utilized; the resource utilization rate is sufficiently increased; the clean production is facilitated; the production cost is reduced; and the zero emission of the hydrogen chloride gas is achieved.
Description
Technical field
The utility model relates to the hydrogen chloride gas that produces in a kind of manufacture sulfanilamide (SN), to its hydrogen chloride gas recirculation system that reclaims.
Background technology
At present; Be applied to chemical industry, in the industry workshop of manufacture sulfanilamide (SN), handle for the hydrogen chloride tail gas that produces; Adopt frame mode shown in Figure 2 to absorb processing; This structure comprises hydrogen chloride tail gas pipe 1, film-falling absorption tower 10, condenser 11 and the finished product recycling can 9 that the order installation connects, and this structural manufacturing process is simple, and the hydrogen chloride gas of absorption can only carry out the immersion method absorption on absorption tower and two simple parts of condenser; For the concentration of hydrochloric acid content that reclaims less than, the hydrochloric acid of absorption utilizes and does not also reach specified value.So the gas of getting rid of in the tail gas also contains a large amount of hydrogen chloride gas, do not reach and carry out the industrialization accepted standard, utilization rate is not high.For not being absorbed, the hydrogen chloride gas that gives off carries out the treatment cost that vent gas treatment also needs high amount.
Summary of the invention
The utility model technical problem to be solved provides a kind of hydrogen chloride gas recirculation system that tail gas is all absorbed, reaches hydrogen chloride gas zero-emission index.
The technical scheme that its technical problem of the utility model solution is taked is: a kind of hydrogen chloride gas recirculation system; Main body comprises hydrogen chloride tail gas jar, one-level falling-film tower, secondary falling-film tower and three grades of packed towers of installation arranged side by side, and the gas outlet of said hydrogen chloride tail gas jar is connected with the air inlet on one-level falling-film tower top; The discharging opening of one-level falling-film tower lower end connects circulating tank three, and the gas outlet of one-level falling-film tower bottom connects the air inlet on secondary falling-film tower top; The discharging opening of secondary falling-film tower lower end connects circulating tank two, and the gas outlet of secondary falling-film tower bottom connects the air inlet of three grades of packed tower bottoms; The gas outlet that the discharging opening of three grades of packed tower lower ends connects one, three grade of packed tower upper end of circulating tank connects the vacuum buffer tank air inlet; The gas outlet of vacuum buffer tank connects the air inlet of water ring vacuum unit; One side of water ring vacuum unit air inlet offers water inlet, and the discharging opening of water ring vacuum unit connects the charging aperture of the charging aperture of circulating tank one, circulating tank two and the charging aperture of circulating tank three respectively; The discharging opening in circulating tank three left sides connects circulation finished product jar.
For absorption that the hydrogen chloride gas that concentration is not high in the last tail gas is circulated, said circulating tank one right-hand member gas outlet is connected with pump one; Pump one connects the air inlet of three grades of packed tower upper right.
In order the secondary falling-film tower to be absorbed the absorption that circulates of incomplete hydrogen chloride gas, said circulating tank two right-hand member gas outlets are connected with pump two; Pump two connects the air inlet of secondary falling-film tower upper right.
For absorption that the incomplete hydrogen chloride gas of absorption in the one-level falling-film tower is circulated, said circulating tank three right-hand member gas outlets are connected with pump three; Pump three connects the air inlet of one-level falling-film tower upper right
The beneficial effect of the utility model is: adopt this structure; Improved the rate of recovery of hydrogen chloride gas; Can reach hundred-percent recycling for the hydrogen chloride gas in the tail gas; And improved the quality and the content of hydrochloric acid, concentration of hydrochloric acid can arrive 30%, and the hydrochloric acid of recovery can be as the acid-base titration agent raw material of products such as the raw material of producing the hydroxylamine hydrochloride product and sulfadimidine.Reduced the pollution of hydrogen chloride, need not add the treating apparatus of hydrogen chloride in the vent gas treatment, better promoted cleaner production, reduced the pollution treatment cost air.
Description of drawings
Fig. 1 is the connection sketch map of the utility model;
Fig. 2 is the sketch map of original absorption plant.
Among the figure: 1, hydrogen chloride tail gas jar 2, one-level falling-film tower 3, secondary falling-film tower 4, three grades of packed towers 5, vacuum buffer tank 6, water ring vacuum unit 6-1, water inlet 7-1, pump one 7-2, pump two 7-3, pump three 8-1, circulating tank one 8-2, circulating tank two 8-3, circulating tank 39, finished product recycling can 10, film-falling absorption tower 11, condenser.
The specific embodiment
A kind of hydrogen chloride gas recirculation system shown in Figure 1; Main body comprises hydrogen chloride tail gas jar 1, one-level falling-film tower 2, secondary falling-film tower 3 and three grades of packed towers 4 of installation arranged side by side, and the gas outlet of said hydrogen chloride tail gas jar 1 is connected with the air inlet on one-level falling-film tower 2 tops; The discharging opening of one-level falling-film tower 2 lower ends connects circulating tank three 8-3, and the gas outlet of one-level falling-film tower 2 bottoms connects the air inlet on secondary falling-film tower 3 tops; The discharging opening of secondary falling-film tower 3 lower ends connects circulating tank two 8-2, and the gas outlet of secondary falling-film tower 3 bottoms connects the air inlet of three grades of packed tower 4 bottoms; The discharging opening of three grades of packed tower 4 lower ends connects circulating tank one 8-1, and the gas outlet of three grades of packed tower 4 upper ends connects vacuum buffer tank 5 air inlets; The gas outlet of vacuum buffer tank 5 connects the air inlet of water ring vacuum unit 6; One side of water ring vacuum unit 6 air inlets offers water inlet 6-1, and the discharging opening of water ring vacuum unit 6 connects the charging aperture of the charging aperture of circulating tank one 8-1, circulating tank two 8-2 and the charging aperture of circulating tank three 8-3 respectively; The discharging opening in circulating tank three 8-3 left side connects circulation finished product jar 9.
Said circulating tank one 8-1 right-hand member gas outlet is connected with pump one 7-1; Pump one 7-1 connects the air inlet of three grades of packed tower 4 upper right.
Said circulating tank two 8-2 right-hand member gas outlets are connected with pump two 7-2; Pump two 7-2 connect the air inlet of secondary falling-film tower 3 upper right.
Said circulating tank three 8-3 right-hand member gas outlets are connected with pump three 7-3; Pump three 7-3 connect the one-level falling-film tower (air inlet of upper right.
The hydrogen chloride gas that comes out from hydrogen chloride tail gas pipe 1; Entering into one-level falling-film tower 2 absorbs; The hydrochloric acid that absorbs is flow among circulating tank three 8-3 by discharging opening; Through pump three 7-3 the hydrochloric acid solution that absorbs among circulating tank three 8-3 is extracted back in the one-level falling-film tower 2, carry out absorbing hydrogen chloride gas once more, the concentration of hydrochloric acid that enters into circulating tank three 8-3 after circulating with this will reach 30%; Entering into secondary falling-film tower 3 through one-level falling-film tower 2 unabsorbed hydrogen chloride gas along tracheae absorbs; Hydrochloric acid after the absorption enters into circulating pump 8-2 along discharging opening; Through pump two 7-2 the hydrochloric acid solution among circulating tank two 8-2 is withdrawn in the secondary falling-film tower 3 and absorbs once more, the concentration of hydrochloric acid solution among last circulating tank two 8-2 can reach 10%～30%; Entering into three grades of packed towers 4 through the residual hydrogen chloride gas in secondary falling-film tower 3 backs absorbs; The hydrochloric acid that makes after the absorption gets among circulating tank one 8-1 along discharging opening; Through pump one 7-1 the solution among circulating tank one 8-1 is drawn back in three grades of packed towers 4; The absorption that repeatedly circulates, the concentration of hydrochloric acid in last circulating tank one 8-1 can reach 5%～10%; The a small amount of hydrogen chloride gas that comes out by three grades of packed tower 4 tops at last; Be drawn in the water ring vacuum unit 6 via vacuum buffer tank 5; By water inlet 6-1 water inlet absorbing hydrogen chloride gas; The hydrochloric acid that makes is returned respectively in circulating tank one 8-1, circulating tank two 8-2 and the circulating tank 8-3 again, enters into the absorption that circulates of corresponding falling-film tower and absorption tower.
Adopt this structure; Improved the rate of recovery of hydrogen chloride gas; Can reach hundred-percent recycling for the hydrogen chloride gas in the tail gas; And improved the quality and the content of hydrochloric acid, concentration of hydrochloric acid can arrive 30%, and the hydrochloric acid of recovery can be as the acid-base titration agent raw material of products such as the raw material of producing the hydroxylamine hydrochloride product and sulfadimidine.Reduced the pollution of hydrogen chloride, need not add the treating apparatus of hydrogen chloride in the vent gas treatment, better promoted cleaner production, reduced the pollution treatment cost air.
Claims (4)
1. hydrogen chloride gas recirculation system; It is characterized in that: main body comprises hydrogen chloride tail gas jar (1), one-level falling-film tower (2), secondary falling-film tower (3) and three grades of packed towers (4) of installation arranged side by side, and the gas outlet of said hydrogen chloride tail gas jar (1) is connected with the air inlet on one-level falling-film tower (2) top; The discharging opening of one-level falling-film tower (2) lower end connects circulating tank three (8-3), and the gas outlet of one-level falling-film tower (2) bottom connects the air inlet on secondary falling-film tower (3) top; The discharging opening of secondary falling-film tower (3) lower end connects circulating tank two (8-2), and the gas outlet of secondary falling-film tower (3) bottom connects the air inlet of three grades of packed towers (4) bottom; The discharging opening of three grades of packed towers (4) lower end connects circulating tank one (8-1), and the gas outlet of three grades of packed towers (4) upper end connects vacuum buffer tank (5) air inlet; The gas outlet of vacuum buffer tank (5) connects the air inlet of water ring vacuum unit (6); One side of water ring vacuum unit (6) air inlet offers water inlet (6-1), and the discharging opening of water ring vacuum unit (6) connects the charging aperture of the charging aperture of circulating tank one (8-1), circulating tank two (8-2) and the charging aperture of circulating tank three (8-3) respectively; The discharging opening in circulating tank three (8-3) left side connects circulation finished product jar (9).
2. hydrogen chloride gas recirculation system according to claim 1 is characterized in that: said circulating tank one (8-1) right-hand member gas outlet is connected with pump one (7-1); Pump one (7-1) connects the air inlet of three grades of packed towers (4) upper right.
3. hydrogen chloride gas recirculation system according to claim 1 is characterized in that: said circulating tank two (8-2) right-hand member gas outlet is connected with pump two (7-2); Pump two (7-2) connects the air inlet of secondary falling-film tower (3) upper right.
4. hydrogen chloride gas recirculation system according to claim 1 is characterized in that: said circulating tank three (8-3) right-hand member gas outlet is connected with pump three (7-3); Pump three (7-3) connects the air inlet of one-level falling-film tower (2) upper right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201329272U CN202105563U (en) | 2011-04-29 | 2011-04-29 | Hydrogen chloride gas circulatory recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201329272U CN202105563U (en) | 2011-04-29 | 2011-04-29 | Hydrogen chloride gas circulatory recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202105563U true CN202105563U (en) | 2012-01-11 |
Family
ID=45431012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201329272U Expired - Fee Related CN202105563U (en) | 2011-04-29 | 2011-04-29 | Hydrogen chloride gas circulatory recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202105563U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302890A (en) * | 2011-04-29 | 2012-01-04 | 苏州市吴赣药业有限公司 | Hydrogen chloride gas circulating recovery system |
| CN104289087A (en) * | 2014-04-22 | 2015-01-21 | 江苏大明科技有限公司 | Recovery system for tail gas generated by triethyl phosphate production |
| CN110075669A (en) * | 2019-05-29 | 2019-08-02 | 湖南长宏新能源材料有限责任公司 | A kind of purification treatment of nonferrous smelting HCl exhaust gas and recycle technique |
-
2011
- 2011-04-29 CN CN2011201329272U patent/CN202105563U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102302890A (en) * | 2011-04-29 | 2012-01-04 | 苏州市吴赣药业有限公司 | Hydrogen chloride gas circulating recovery system |
| CN104289087A (en) * | 2014-04-22 | 2015-01-21 | 江苏大明科技有限公司 | Recovery system for tail gas generated by triethyl phosphate production |
| CN110075669A (en) * | 2019-05-29 | 2019-08-02 | 湖南长宏新能源材料有限责任公司 | A kind of purification treatment of nonferrous smelting HCl exhaust gas and recycle technique |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102302890A (en) | Hydrogen chloride gas circulating recovery system | |
| CN106348374B (en) | Deamination treatment method and treatment device for wastewater | |
| CN202105563U (en) | Hydrogen chloride gas circulatory recovery system | |
| CN103833049A (en) | Device and process for stilling ammonia with negative pressure | |
| CN203990292U (en) | A kind of viscose rayon emission-control equipment | |
| CN101792447B (en) | Device for preparing urotropine by using gas phase method | |
| CN205760480U (en) | The device for absorbing tail gas that a kind of benzyl alcohol produces | |
| CN109650568A (en) | The sudden and violent qi exhaustion ammonia system of one kind vacuum of waste liquid containing ammonia and method | |
| CN201686637U (en) | Hexamethylenetetramine preparing device by gas phase method | |
| CN203938477U (en) | The chlorine dioxide generator under vacuum condition with evaporation, reactive crystallization | |
| CN206751389U (en) | A kind of chlorine recovery system during pyridine compounds and their continuous chlorination | |
| CN203437019U (en) | Acid gas recovery tower | |
| CN214020023U (en) | Preparation facilities of hydrogen chloride methanol solution | |
| CN211255244U (en) | Recycling system of hydrogen chloride water mixed gas | |
| CN214862376U (en) | Ammonia gas recovery system | |
| CN201990481U (en) | Concentration device for dilute hydrochloric acid | |
| CN205500780U (en) | Dirty sour enrichment facility that purifies of flue gas relieving haperacidity in -process | |
| CN211536560U (en) | Regeneration system containing tar waste acid | |
| CN203923396U (en) | A kind of electrodeposited cobalt anolyte vacuum-evaporation dechlorination apparatus | |
| CN204380452U (en) | The device of fumed silica tail gas recycle | |
| CN204079524U (en) | A kind of high salt high ammonia-nitrogen sewage treatment system | |
| CN102814056A (en) | Treating method for tail gas containing nitrogen dioxide | |
| CN104529003B (en) | A kind of acid regeneration equipment | |
| CN208727126U (en) | A kind of alcohol ethers and aromatic solvent VOCs treatment system | |
| CN203017976U (en) | Concentrated nitric acid mist recycling device |
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: 20120111 Termination date: 20180429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |