CN203079695U - Injection type dearsenification reactor - Google Patents
Injection type dearsenification reactor Download PDFInfo
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- CN203079695U CN203079695U CN 201220734345 CN201220734345U CN203079695U CN 203079695 U CN203079695 U CN 203079695U CN 201220734345 CN201220734345 CN 201220734345 CN 201220734345 U CN201220734345 U CN 201220734345U CN 203079695 U CN203079695 U CN 203079695U
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- dearsenification
- reactive tank
- valve
- pump
- phosphoric acid
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Abstract
The utility model discloses an injection type dearsenification reactor. The injection type dearsenification reactor is mainly provided with a dearsenification reaction slot, a circulating pump and an injection pump which are sequentially connected in a circulating manner. The dearsenification reaction slot is provided with a reaction slot top cover, a liquid-sealed emptying port, a feed port, a P2S5 putting port, an acid outlet port and a reaction slot gas outlet port, and the injection pump is arranged on the reaction slot top cover. As the circulating pump is adopted for conveying the industrial phosphoric acid to the injection pump, produced negative pressure is used for sucking hydrogen sulfide gas, full reaction with the industrial phosphoric acid is further performed in an injection pump mixing chamber, turbulent flow stirring is realized in the dearsenification reaction slot, the circulation time of dearsenification reaction is shortened, the production efficiency of food grade phosphoric acid and the continuity in production are improved, the hydrogen sulfide gas in the degassing process step is fully recovered and utilized, the using quantity of a phosphorus pentasulfide dearsenification agent is reduced, the secondary pollution is avoided, a factory and a surrounding environment are effectively protected, and the injection type dearsenification reactor has good economic benefits, social benefits and ecological benefits.
Description
Technical field:
The utility model belongs to phosphorous chemical industry technology and environmental protection technical field, relates to a kind of jet-type dearsenification reactor.
Background technology:
Phosphorus is important bioelement, and foodstuff additive phosphoric acid is widely used in foodstuffs industry as acidic flavoring agent, zymic nutrition agent.Impurity index request in the food grade phosphoric acid is strict especially.At present, it is raw material that industrial phosphoric acid is mainly adopted in food grade phosphoric acid production, and the technology that removes that removes arsenic especially of impurity is very important in the production process.
The method of phosphoric acid dearsenification mainly contains: 1. sulphide precipitation: by add certain precipitation agent in phosphate raw material, make it produce indissoluble or insoluble compound is separated out, separate obtaining the low-arsenic phosphorus acid product then by strainer.2. solvent extration: dissolve in the organic solvent based on phosphoric acid, impurity arsenic then is extracted out, thereby makes its separation.3. ion exchange method: handle phosphoric acid with strong-acid ion exchange resin, thereby remove impurity arsenic.Sulphide precipitation is because of required step and equipment is simple and dearsenification is effective, is the most frequently used arsenic removing method.The principle of phosphoric acid sulphide precipitation dearsenification is as follows:
2P
2S
5+?16H
2O→4H
3PO
4?+?10H
2S↑
H
3AsO
4?+?H
2S→H
3AsO
3?+?H
2O?+?S↓
H
3AsO
3?+?3H
2S→6H
2O?+?As
2S
3↓
In prior art, the food grade phosphoric acid production process route is divided into two kinds of Re Fa and wet methods.The gordian technique of two kinds of route production food grade phosphoric acids all is removing of impurity.As Chinese patent 200910062940.2 a kind of method with producing food grade phosphoric acid with refined wet phosphoric acid has been proposed, do defluorinating agent by adding active silica, add sodium sulfide solution or thiophosphoric anhydride solid and do the dearsenification deleading reagent, after the filtration, filtrate is sent to aeration workshop section, constantly blast air and stirring, filter at last and obtain food grade phosphoric acid.This method is with low cost, less energy consumption, pollution-free." polyphosphoric acid and dearsenicating technology research thereof " (Yunnan chemical, 2007,34(4): 63～66) in the literary composition, introduce the difference of polyphosphoric acid and common thermal phosphoric acid physico-chemical property and the at present both at home and abroad present situation and the market outlook of polyphosphoric acid, proposed impurity arsenic to the influence of polyphosphoric acid and summarized several arsenic removing methods that present phosphoric acid extensively adopts.This article points out, with the dearsenic agent of preparation join in the reactor with phosphoric acid in the arsenus acid reaction, generate As
2S
3Precipitation will contain As then
2S
3Phosphoric acid be pumped into and slough unnecessary H in the degassing tower
2S gas is delivered in the strainer and is filtered, and phosphoric acid product enters pan tank, filter residue As
2S
3Enter the slag tube, tail gas washs up to standard after blower fan is discharged in the atmosphere through washing tower." producing food grade phosphoric acid " (design of sulphur phosphorus and powder technology by the industrial phosphoric acid operate continuously, 2005,6:27～30) literary composition and " brief talking the production of Continuous Heat method food grade phosphoric acid " (guizhou chemical industry, 2005,30(4): 43～45) in the literary composition, all mentioned the removal methods of the remaining hydrogen sulfide in dearsenification reaction back during food grade phosphoric acid is produced.This method is to blast air by gas blower dearsenification phosphoric acid stripping is removed hydrogen sulfide, and the stink damp body and function sodium carbonate solution of stripping absorbs, and the gained sodium sulfide solution is used to produce other to the less demanding phosphoric acid salt of sulphur content.The arsenic slag that filtration is collected transports arsenic product factory to after washing, drying.This method is simple to operate, and good impurity removing effect avoid hydrogen sulfide directly to discharge and cause environmental pollution, but its absorption agent is used yellow soda ash, introduces sodium ion, causes secondary pollution to a certain extent.From economic benefit and social benefit analysis, this method is not optimal selection.
We, set out in conjunction with phosphoric acid production is actual to the existing research that is used for food grade phosphoric acid dearsenification reaction technology according to for many years, have studied jet-type dearsenification reactor.Through looking into all the other documents, in food grade phosphoric acid dearsenification reaction, the reaction and the treating plant that use jet-type to stir are not arranged all.Adopt this jet-type dearsenification reactor, not only can fully recycle the hydrogen sulfide that degassing process is fallen by stripping, avoid secondary pollution, can also shorten the cycling time of the dearsenification reaction of industrial phosphoric acid in the reactive tank greatly, have good economic benefit and social benefit.
Summary of the invention:
The purpose of this utility model: be in order to solve the problems of the prior art that the dearsenification of food grade phosphoric acid production process purifies, shorten the time of dearsenification reaction, improve the production efficiency of food grade phosphoric acid and the continuity of production, fully recycle the hydrogen sulfide in the degassing process, reduce the use cost of dearsenic agent, avoid the secondary pollution of obnoxious flavour hydrogen sulfide, increase economic efficiency, social benefit and ecological benefits, a kind of jet-type dearsenification reactor is provided.
The technical solution of the utility model is:
Adopt recycle pump that industrial phosphoric acid is delivered to squirt pump; when industrial phosphoric acid under high pressure at full speed penetrates through nozzle; the negative pressure that produces in the mixing section of squirt pump makes the hydrogen sulfide in the phosphoric acid degassing process enter the squirt pump suction chamber; hydrogen sulfide and in the mixing section of squirt pump and the reaction of industrial phosphoric acid thorough mixing; the industrial phosphoric acid that has been mixed with the thiophosphoric anhydride dearsenic agent in the directive reactor sprays strongly then; reach the effect that turbulent flow stirs; make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid can be fast hybrid reaction fully; thereby shortened the cycling time of the dearsenification reaction of industrial phosphoric acid in the reactive tank; the production efficiency of food grade phosphoric acid and the continuity of production have been improved; fully recycle the hydrogen sulfide in the degassing process; reduced the consumption of thiophosphoric anhydride dearsenic agent; avoid obnoxious flavour hydrogen sulfide to secondary pollution; protect factory and surrounding enviroment effectively, improved economic and social benefit.
The utility model is achieved in that
This reactor mainly is provided with dearsenification reactive tank, recycle pump and squirt pump and circulates successively and is connected.Described dearsenification reactive tank is provided with reactive tank top cover, fluid-tight drain, opening for feed, P
2S
5Dog-house, valve I, valve II and air outlet, the reactive tank top cover is provided with squirt pump, and the reactive tank top cover is connected with flange with the dearsenification reactive tank, and the top of reactive tank is provided with fluid-tight drain, opening for feed, P respectively
2S
5Dog-house and air outlet are provided with the valve I between fluid-tight drain and the dearsenification reactive tank, and the air outlet is provided with valve VI, P
2S
5Dog-house is provided with top cover, and the valve V is arranged at the bottom of dearsenification reactive tank, and the valve V is connected with the opening for feed of recycle pump with flange.
Described squirt pump is provided with squirt pump acid inlet, nozzle, injection and pumps acid mouthful and H
2The S inlet pipe; The squirt pump acid inlet is connected with the discharge port of recycle pump by the valve III with circulation tube, and injection is pumped the acid mouth and extended to dearsenification reactive tank middle and lower part, and it is hydraucone that an acid mouth hypomere is pumped in injection, H
2The S inlet pipe is arranged on squirt pump top, H
2The S inlet pipe is provided with valve VII and H
2The S inlet mouth connects, H
2The S inlet pipe is connected with the valve VI of dearsenification reactive tank with equilibration tube in addition.
Described circulating-pump outlet is provided with Y-tube, Y-tube wherein one be connected with circulating-pump outlet, another filtration unit that leads to peripheral hardware connects, the 3rd is connected successively with valve III, circulation tube and squirt pump acid inlet.
Described squirt pump, dearsenification reactive tank, equilibration tube, circulation tube, fluid-tight blow-down pipe, recycle pump, flange are all selected stainless material for use.
Above-described squirt pump adopts negative-pressure operation to suck hydrogen sulfide.
Advantage of the present utility model and positively effect:
1, this jet-type dearsenification reactor, the negative pressure of utilizing squirt pump to produce fully absorbs the hydrogen sulfide that degassing process produces, and has both avoided secondary pollution, reduces the use cost of dearsenic agent again, has good economic benefit, social benefit and ecological benefits;
2, the squirt pump of this reactor setting, can be with industrial phosphoric acid through in reactive tank, spraying strongly behind the squirt pump, reach the effect that turbulent flow stirs, make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid can be fast hybrid reaction fully, shortened the cycling time of the dearsenification reaction of industrial phosphoric acid in the reactive tank greatly, improve the production efficiency of food grade phosphoric acid and the continuity of production, had good economic benefit.
Description of drawings:
Accompanying drawing 1: be the utility model structural representation.
Identify among the figure: 1, squirt pump; 2, squirt pump acid inlet; 3, nozzle; 4, reactive tank top cover; 5, fluid-tight drain; 6, valve I; 7, opening for feed; 8, valve II; 9, top cover; 10, P
2S
5Dog-house; 11, dearsenification reactive tank; 12, the acid mouth is pumped in injection; 13, circulation tube; 14, valve III; 15, valve IV; 16, go out the acid mouth; 17, valve V; 18, recycle pump; 19, air outlet; 20, valve VI; 21, equilibration tube; 22, H2S inlet mouth; 23, valve VII.
Embodiment:
Below in conjunction with embodiment the utility model is described in detail.
Embodiment 1:
This reactor mainly is provided with dearsenification reactive tank 11, recycle pump 18 and squirt pump 1 and circulates successively and is connected.Dearsenification reactive tank 11 is provided with reactive tank top cover 4, fluid-tight drain 5, opening for feed 7, P
2S
5Dog-house 10, valve I 6, valve II 8 and air outlet 19, reactive tank top cover 4 is provided with squirt pump 1, and reactive tank top cover 4 is connected with dearsenification reactive tank 11 usefulness flanges, and the top of reactive tank is provided with fluid-tight drain 5, opening for feed 7, P respectively
2S
5Dog-house 10 and air outlet 19 are provided with valve I 6 between fluid-tight drain 5 and the dearsenification reactive tank 11, and air outlet 19 is provided with valve VI 20, P
2S
5Dog-house 10 is provided with top cover 9, and valve V 17 is arranged at going out of dearsenification reactive tank 11 bottoms sour mouthful 16, and valve V 17 usefulness flanges are connected with the opening for feed of recycle pump 18.
Squirt pump 1 is provided with squirt pump acid inlet 2, nozzle 3, sprays and pump acid mouth 12 and H
2The S inlet pipe; The acid inlet 2 usefulness circulation tubes 13 of squirt pump 1 are connected with the discharge port of recycle pump 18 by valve III 14, and the acid mouthfuls 12 that goes out of squirt pump 1 extends to dearsenification reactive tank 11 middle and lower parts, squirt pump 1 to go out sour mouth 12 hypomeres be hydraucone, H
2The S inlet pipe is arranged on squirt pump 1 top, H
2The S inlet pipe is provided with valve VII 23 and H
2 S inlet mouth 22 connects H
2The S inlet pipe is connected with the valve VI 20 of dearsenification reactive tank 11 with equilibration tube 21 in addition.
Described squirt pump 1, dearsenification reactive tank 11, equilibration tube 21, circulation tube 13, fluid-tight blow-down pipe, recycle pump 18, flange are all selected stainless material for use.
During work, industrial phosphoric acid is delivered to reactive tank 2/3 liquid level, and keeps 70 ℃ of temperature, from P from dearsenification reactive tank opening for feed 7
2S
5Dog-house adds thiophosphoric anhydride dearsenic agent ON cycle pump 18 then by 1.3 times of arsenic content in the industrial phosphoric acid, open the interior air pressure of valve VI 20 balanced reaction grooves of equilibration tube 21, industrial phosphoric acid is delivered to squirt pump 1 through recycle pump 18, industrial phosphoric acid under high pressure at full speed penetrates through nozzle 3, the negative pressure that produces in squirt pump 1 mixing section makes the hydrogen sulfide in the phosphoric acid degassing process enter the suction chamber of squirt pump 1, and in the mixing section of squirt pump 1 and the reaction of industrial phosphoric acid thorough mixing, the industrial phosphoric acid that has been mixed with the thiophosphoric anhydride dearsenic agent again in reactor sprays strongly, reach the effect that turbulent flow stirs, thiophosphoric anhydride dearsenic agent and industrial phosphoric acid be hybrid reaction fully fast, the phosphoric acid of finishing the dearsenification reaction is delivered to squirt pump 1 through recycle pump 18 parts and carries out internal recycle, and a part is delivered to filtration plant and filters.
Embodiment 2:
This reactor mainly is provided with dearsenification reactive tank 11, recycle pump 18 and squirt pump 1 and circulates successively and is connected.Dearsenification reactive tank 11 is provided with reactive tank top cover 4, fluid-tight drain 5, opening for feed 7, P
2S
5Dog-house 10, valve I 6, valve II 8 and air outlet 19, reactive tank top cover 4 is provided with squirt pump 1, and reactive tank top cover 4 is connected with dearsenification reactive tank 11 usefulness flanges, and the top of reactive tank is provided with fluid-tight drain 5, opening for feed 7, P respectively
2S
5Dog-house 10 and air outlet 19 are provided with valve I 6 between fluid-tight drain 5 and the dearsenification reactive tank 11, and air outlet 19 is provided with valve VI 20, P
2S
5Dog-house 10 is provided with top cover 9, and valve V 17 is arranged at going out of dearsenification reactive tank 11 bottoms sour mouthful 16, and valve V 17 usefulness flanges are connected with the opening for feed of recycle pump 18.
Squirt pump 1 is provided with acid inlet 2, nozzle 3, the injection of squirt pump 1 and pumps acid mouth 12 and H
2The S inlet pipe; Squirt pump acid inlet 2 usefulness circulation tubes 13 are connected with the discharge port of recycle pump 18 by valve III 14, spray to pump acid mouthfuls 12 and extend to dearsenification reactive tank 11 middle and lower parts, squirt pump 1 to go out sour mouth 12 hypomeres be hydraucone, H
2The S inlet pipe is arranged on squirt pump 1 top, H
2The S inlet pipe is provided with valve VII 23 and H
222 of S inlet mouth 1 connects H
2The S inlet pipe is connected with the valve VI 20 of dearsenification reactive tank 11 with equilibration tube 21 in addition.
Described squirt pump 1, dearsenification reactive tank 11, equilibration tube 21, circulation tube 13, fluid-tight blow-down pipe, recycle pump 18, flange are all selected stainless material for use.
During work, industrial phosphoric acid is delivered to reactive tank 3/4 liquid level, and keeps 80 ℃ of temperature, from P from dearsenification reactive tank opening for feed 7
2S
5Dog-house adds thiophosphoric anhydride dearsenic agent ON cycle pump 18 then by 1.3 times of arsenic content in the industrial phosphoric acid, open the interior air pressure of valve VI 20 balanced reaction grooves of equilibration tube 21, industrial phosphoric acid is delivered to squirt pump 1 through recycle pump 18, industrial phosphoric acid under high pressure at full speed penetrates through nozzle 3, the negative pressure that produces in squirt pump 1 mixing section makes the hydrogen sulfide in the phosphoric acid degassing process enter the suction chamber of squirt pump 1, and in the mixing section of squirt pump 1 and the reaction of industrial phosphoric acid thorough mixing, the industrial phosphoric acid that has been mixed with the thiophosphoric anhydride dearsenic agent again in reactor sprays strongly, reach the effect that turbulent flow stirs, thiophosphoric anhydride dearsenic agent and industrial phosphoric acid be hybrid reaction fully fast, the phosphoric acid of finishing the dearsenification reaction is delivered to squirt pump 1 through recycle pump 18 parts and carries out internal recycle, and a part is delivered to filtration plant and filters.
Claims (3)
1. jet-type dearsenification reactor is characterized in that: dearsenification reactive tank (11), recycle pump (18) and squirt pump (1) mainly are set circulate successively and be connected; Described dearsenification reactive tank (11) is provided with reactive tank top cover (4), fluid-tight drain (5), opening for feed (7), valve I (6), valve II (8), P
2S
5Dog-house (10) and air outlet (19), reactive tank top cover (4) is provided with squirt pump (1), and reactive tank top cover (4) is connected with flange with dearsenification reactive tank (11), and the top of reactive tank is provided with fluid-tight drain (5), opening for feed (7), P respectively
2S
5Dog-house (10) and air outlet (15) are provided with valve I (6) between fluid-tight drain (5) and the dearsenification reactive tank, air outlet (19) are provided with valve VI (20), P
2S
5Dog-house (10) is provided with top cover (9), and valve V (17) is arranged at going out of dearsenification reactive tank bottom sour mouthful (16), and valve V (17) is connected with the opening for feed of recycle pump (18) with flange.
2. a kind of jet-type dearsenification reactor according to claim 1 is characterized in that: described squirt pump (1) be provided with squirt pump (1) acid inlet (2), nozzle (3), squirt pump (1) go out acid mouthful (12) and H
2The S inlet pipe; Nozzle (3) uses circulation tube (13) to be connected with the discharge port of recycle pump (18) by valve III (14), and injection is pumped acid mouthful (12) and extended to dearsenification reactive tank (11) middle and lower part, and it is hydraucone that acid mouth (a 12) hypomere is pumped in injection, H
2The S inlet pipe is arranged on squirt pump (1) top, H
2The S inlet pipe sets gradually valve VII (23) and H
2S inlet mouth (22) connects, H
2The S inlet pipe is connected with the valve VI (20) of dearsenification reactive tank (11) with equilibration tube (21) in addition.
3. a kind of jet-type dearsenification reactor according to claim 1, it is characterized in that: described recycle pump (18) outlet is provided with Y-tube, Y-tube wherein one be connected with squirt pump acid inlet (2), another is connected with the filtration unit of peripheral hardware by valve IV (15), and the 3rd is connected successively with valve III (14), circulation tube (13) and squirt pump acid inlet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734345 CN203079695U (en) | 2012-12-27 | 2012-12-27 | Injection type dearsenification reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734345 CN203079695U (en) | 2012-12-27 | 2012-12-27 | Injection type dearsenification reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203079695U true CN203079695U (en) | 2013-07-24 |
Family
ID=48825553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734345 Withdrawn - After Issue CN203079695U (en) | 2012-12-27 | 2012-12-27 | Injection type dearsenification reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203079695U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011110A (en) * | 2012-12-27 | 2013-04-03 | 广西明利化工有限公司 | Injection type arsenic removal reactor |
-
2012
- 2012-12-27 CN CN 201220734345 patent/CN203079695U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011110A (en) * | 2012-12-27 | 2013-04-03 | 广西明利化工有限公司 | Injection type arsenic removal reactor |
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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 |
Granted publication date: 20130724 Effective date of abandoning: 20140528 |
|
| RGAV | Abandon patent right to avoid regrant |