CN202030522U - Recycling system for hydrochloric acid production - Google Patents
Recycling system for hydrochloric acid production Download PDFInfo
- Publication number
- CN202030522U CN202030522U CN2011200724081U CN201120072408U CN202030522U CN 202030522 U CN202030522 U CN 202030522U CN 2011200724081 U CN2011200724081 U CN 2011200724081U CN 201120072408 U CN201120072408 U CN 201120072408U CN 202030522 U CN202030522 U CN 202030522U
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- CN
- China
- Prior art keywords
- tank
- liquid seal
- acid
- film absorber
- hydrochloric acid
- 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
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Abstract
The utility model relates to a recycling system for hydrochloric acid production, which comprises a falling film absorber, a three-in-one graphite oven, a hydraulic injector, a liquid seal tank, a finished acid tank and a diluted waste acid recycling tank. The falling film absorber is respectively provided with pipelines and is connected with the three-in-one graphite oven and the hydraulic injector through the pipelines. An outlet of the three-in-one graphite oven is provided with a finished product pipeline and is connected with the finished product acid tank through the finished product pipeline. The hydraulic injector is connected with the liquid seal tank through a pipeline. The liquid seal tank is provided with a supplementing water pipe and an overflow port. The overflow port is communicated with the diluted waste acid recycling tank through an overflow pipeline. The diluted waste acid recycling tank is provided with a return pipeline and is communicated with the falling film absorber through the return pipeline. In the utility model, overflow water of the liquid seal tank is stored into the diluted waste acid recycling tank, then is sent into the falling film absorber and replaces the original deionized water; and after the overflow water absorbs hydrogen chloride, the mixture is further processed into qualified hydrochloric acid, so that waste acid and waste water in diluted waste acid are effectively utilized, and thus, the zero emission of production in the hydrochloric acid industry is realized.
Description
Technical field
The utility model relates to the reclaiming system in a kind of chemical process, specifically is meant the reclaiming system that a kind of hydrochloric acid is produced.
Technical background
At present, in the industrialization production process of hydrochloric acid, the hydrogenchloride of the deionized water of out-of-bounds sending into through flow control valve enters absorption and flows to from the falling-film absorber top under forms dilute hydrochloric acid, enters three-in-one graphite furnace continuation absorbing hydrogen chloride again and flows out qualified hydrochloric acid from the bottom, flows into acid storage tank.Take away with hydraulic ejector from falling-film absorber bottom tail gas discharged, behind liquid seal can absorption portion tail gas, do not coagulate waste gas and enter atmosphere, the water of liquid seal can is beaten toward hydraulic ejector through the water topping-up pump again, be the hydrogen chloride gas bulk absorption back emptying fully that guarantees that tail gas contains, the liquid seal can top replenishes service water with industrial water pipe, and overflow port overflow diluted acid waste water enters side bilge, send sewage disposal.
In the large-scale production process of hydrochloric acid, liquid seal can overflows a large amount of acid waste water that contains and delivers to sewage disposal workshop section in the unit time, so not only produced huge waste, but also has increased the burden of sewage disposal.
The utility model content
The purpose of this utility model is to provide a kind of diluted acid that can reclaim in the acid-bearing wastewater, and can make the reclaiming system of a kind of hydrochloric acid production that recycles of waste water.
In order to realize this purpose, the utility model has adopted following technical scheme:
The reclaiming system that a kind of hydrochloric acid is produced, comprise falling-film absorber, three-in-one graphite furnace, hydraulic ejector, liquid seal can, finished product acid tank, described falling-film absorber is respectively equipped with pipeline and links to each other with described three-in-one graphite furnace and described hydraulic ejector, the outlet of described three-in-one graphite furnace is provided with a finished product pipeline and links to each other with described finished product acid tank, and the outlet of described three-in-one graphite furnace also is provided with first circulating line and links to each other with described falling-film absorber; Described hydraulic ejector links to each other with described liquid seal can by pipeline, second circulating line that is provided with a band water topping-up pump in the bottom of described liquid seal can links to each other with described hydraulic ejector, form a round-robin loop, described liquid seal can also is provided with an overflow port, the reclaiming system of this hydrochloric acid production also comprises rare spent acid accumulator tank, described overflow port is connected with described rare spent acid accumulator tank by overflow spout, this rare spent acid accumulator tank is provided with a backpass ductwork, and this backpass ductwork is connected with described falling-film absorber.
Preferably, described backpass ductwork is provided with diluted acid pump, variable valve and under meter successively along the direction of described falling-film absorber.
Preferably, described liquid seal can is provided with one and replenishes water pipe.
The utility model changes the make up water of liquid seal can into deionized water, overflow water (spent acid) with liquid seal can is stored to described rare spent acid accumulator tank simultaneously, with the diluted acid pump spent acid in the dilute acid bath is sent into falling-film absorber again, replace original deionized water, further be processed into qualified hydrochloric acid behind the absorbing hydrogen chloride.
The utility model has the advantages that and to alleviate the burden of sewage disposal workshop section effectively, can also effectively utilize simultaneously spent acid and waste water in the useless diluted acid, thereby realized the zero release of hydrochloric acid industrial production, can reduce production costs well, and environmental compatibility has preferably been arranged.
Description of drawings
Accompanying drawing 1 is a structure iron of the present utility model.
Embodiment
Describe the utility model in detail referring now to accompanying drawing.
As shown in Figure 1, the reclaiming system that a kind of hydrochloric acid is produced comprises falling-film absorber 1, three-in-one graphite furnace 2, hydraulic ejector 3, liquid seal can 4, finished product acid tank 5 and rare spent acid accumulator tank 6.
The bottom of falling-film absorber 1 is provided with pipeline 71 and links to each other with three-in-one graphite furnace 2, and the outlet of three-in-one graphite furnace 2 is provided with a finished product pipeline 72 and links to each other with finished product acid tank 5, and the outlet of three-in-one graphite furnace 2 also is provided with first circulating line 73 and links to each other with falling-film absorber 1.Absorbing hydrogen chloride forms dilute hydrochloric acid in falling-film absorber 1, enter three-in-one graphite furnace 2 continuation absorbing hydrogen chlorides again and flow out qualified hydrochloric acid from the bottom, flow into finished product acid tank 5, simultaneously, be provided with first circulating line 73 between three-in-one graphite furnace 2 and the falling-film absorber 1, can make system more cmpletely the absorption of hydrogenchloride.
The top of falling-film absorber 1 is provided with exhaust pipe 74 and links to each other with hydraulic ejector 3, hydraulic ejector 3 links to each other with liquid seal can 4 by pipeline 75, second circulating line 76 that is provided with a band water topping-up pump 81 in the bottom of liquid seal can 4 links to each other with hydraulic ejector 3, form a round-robin loop, for guarantee water in the liquid seal can fully, liquid seal can 4 also is provided with one and replenishes water pipe 77.From falling-film absorber 1 tail gas discharged under the suction of hydraulic ejector 3, in liquid seal can behind the 4 absorption portion tail gas, the water of liquid seal can 4 is delivered to hydraulic ejector 3 again through water topping-up pump 81, so circulation, can make 4 absorptions in liquid seal can fully of falling-film absorber 1 tail gas discharged effectively, simultaneously, the make up water of liquid seal can 4 adopts deionized water, can make the waste water in the liquid seal can 4 also can be used for follow-up hydrochloric acid production process like this.
Liquid seal can 4 is provided with an overflow port, overflow port is connected with rare spent acid accumulator tank 6 by overflow spout 78, rare spent acid accumulator tank 6 also is provided with a backpass ductwork 79, backpass ductwork 79 is connected with falling-film absorber 1, and backpass ductwork 79 is provided with diluted acid pump 82, variable valve 83 and under meter 84 successively along the direction of falling-film absorber 1.The useless diluted acid water that overflow port 41 overflows is stored to rare spent acid accumulator tank 6, and useless diluted acid water is delivered to falling-film absorber 1 through diluted acid pump 82, and its flow can be according to practical condition, thereby controls by variable valve 83 and under meter 84.
The reclaiming system of this hydrochloric acid production can be sent the useless diluted acid water that overflows of liquid seal can 4 into falling-film absorber 1 effectively, replace original deionized water, further be processed into qualified hydrochloric acid behind the absorbing hydrogen chloride, make useless diluted acid water circulation use, thereby reduced the waste of water resources, also reclaim spent acid simultaneously, alleviated the load of sewage disposal workshop section, reached the purpose of energy-saving and emission-reduction.
Above-described the utility model embodiment does not constitute the qualification to the utility model protection domain.Any modification of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the claim protection domain of the present utility model.
Claims (3)
1. the reclaiming system produced of a hydrochloric acid, comprise falling-film absorber, three-in-one graphite furnace, hydraulic ejector, liquid seal can, finished product acid tank, described falling-film absorber is respectively equipped with pipeline and links to each other with described three-in-one graphite furnace and described hydraulic ejector, the outlet of described three-in-one graphite furnace is provided with a finished product pipeline and links to each other with described finished product acid tank, and the outlet of described three-in-one graphite furnace also is provided with first circulating line and links to each other with described falling-film absorber; Described hydraulic ejector links to each other with described liquid seal can by pipeline, second circulating line that is provided with a band water topping-up pump in the bottom of described liquid seal can links to each other with described hydraulic ejector, form a round-robin loop, described liquid seal can also is provided with an overflow port, it is characterized in that:
The reclaiming system of this hydrochloric acid production also comprises rare spent acid accumulator tank, and described overflow port is connected with described rare spent acid accumulator tank by overflow spout, and this rare spent acid accumulator tank is provided with a backpass ductwork, and this backpass ductwork is connected with described falling-film absorber.
2. the reclaiming system that a kind of hydrochloric acid according to claim 1 is produced, it is characterized in that: described backpass ductwork is provided with diluted acid pump, variable valve and under meter successively along the direction of described falling-film absorber.
3. the reclaiming system that a kind of hydrochloric acid according to claim 2 is produced is characterized in that: described liquid seal can is provided with one and replenishes water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200724081U CN202030522U (en) | 2011-03-10 | 2011-03-10 | Recycling system for hydrochloric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200724081U CN202030522U (en) | 2011-03-10 | 2011-03-10 | Recycling system for hydrochloric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202030522U true CN202030522U (en) | 2011-11-09 |
Family
ID=44892829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200724081U Expired - Fee Related CN202030522U (en) | 2011-03-10 | 2011-03-10 | Recycling system for hydrochloric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202030522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858608A (en) * | 2015-01-23 | 2016-08-17 | 新疆丰泰化工科技有限公司 | Method and equipment for vacuum negative-pressure hydrogen chloride absorption to produce hydrochloric acid |
-
2011
- 2011-03-10 CN CN2011200724081U patent/CN202030522U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858608A (en) * | 2015-01-23 | 2016-08-17 | 新疆丰泰化工科技有限公司 | Method and equipment for vacuum negative-pressure hydrogen chloride absorption to produce hydrochloric acid |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20160310 |