CN103011108B - Continuous arsenic removal reactor - Google Patents
Continuous arsenic removal reactor Download PDFInfo
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- CN103011108B CN103011108B CN201210580534.7A CN201210580534A CN103011108B CN 103011108 B CN103011108 B CN 103011108B CN 201210580534 A CN201210580534 A CN 201210580534A CN 103011108 B CN103011108 B CN 103011108B
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- CN
- China
- Prior art keywords
- reactive tank
- dearsenification
- phosphoric acid
- valve
- acid
- Prior art date
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- 229910052785 arsenic Inorganic materials 0.000 title abstract description 22
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title abstract description 21
- 239000002253 acid Substances 0.000 claims abstract description 40
- 238000001914 filtration Methods 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 132
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 66
- 238000006243 chemical reaction Methods 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 17
- CYQAYERJWZKYML-UHFFFAOYSA-N phosphorus pentasulfide Chemical compound S1P(S2)(=S)SP3(=S)SP1(=S)SP2(=S)S3 CYQAYERJWZKYML-UHFFFAOYSA-N 0.000 abstract description 16
- 239000007921 spray Substances 0.000 abstract description 9
- 238000003756 stirring Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 description 61
- 239000003795 chemical substances by application Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 14
- 239000012535 impurity Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 5
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000137 polyphosphoric acid Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 230000001351 cycling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000003016 phosphoric acids Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- -1 after filtration Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000013355 food flavoring agent Nutrition 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Landscapes
- Distillation Of Fermentation Liquor, Processing Of Alcohols, Vinegar And Beer (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a continuous arsenic removal reactor. An arsenic removal reactive tank, a circulating pump and an oblique-angle spray head are mainly arranged in the continuous arsenic removal reactor and are sequentially and circularly connected; a liquid-sealing venting port, a feeding port and a P2S5 feeding port are respectively formed on the top of the arsenic removal reactive tank; an acid outlet and an acid inlet of the oblique-angle spray head are respectively formed in the lower part of the arsenic removal reactive tank; and the acid outlet is connected with the acid inlet by the circulating pump. By the reactor, the industrial phosphoric acid of the arsenic removal reactive tank is delivered from the acid outlet to the oblique-angle spray head by using the circulating pump, the industrial phosphoric acid is severely ejected from the oblique-angle spray head under a pressurization condition, and the industrial phosphoric acid mixed with phosphorus pentasulfide is severely ejected into the arsenic removal reactive tank to integrally stir in a turbulent flow mode, so that the industrial phosphoric acid fully reacts with the phosphorus pentasulfide in a mixing mode. By the continuous arsenic removal reactor, the circulation time of arsenic removal reaction is shortened, the production efficiency and the production continuity of food-grade phosphoric acid are improved, and the continuous arsenic removal reactor has good economic benefit and social benefit.
Description
technical field:
The invention belongs to technical field of phosphorous chemical industry, relate to a kind of dearsenification reactor continuously.
background technology:
Phosphorus is important bioelement, and foodstuff additive phosphoric acid, as the nutrition agent of acidic flavoring agent, yeast, is widely used in foodstuffs industry.Impurity index request in food grade phosphoric acid is strict especially.At present, food grade phosphoric acid produces that main to adopt industrial phosphoric acid be raw material, and in production process, the technology that removes that removes arsenic especially of impurity is very important.
The method of phosphoric acid dearsenification mainly contains: 1. sulphide precipitation: by add certain precipitation agent in phosphate raw material, its production indissoluble or insoluble compound are separated out, be then isolated low-arsenic phosphorus acid product by strainer.2. solvent extration: dissolve in organic solvent based on phosphoric acid, arsenic impurities is extracted out, thus make its separation.3. ion exchange method: process phosphoric acid with strong-acid ion exchange resin, thereby remove arsenic impurities.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, 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 is all removing of impurity.As Chinese patent 200910062940.2 has proposed a kind of method with producing food grade phosphoric acid with refined wet phosphoric acid, by adding active silica to do defluorinating agent, add sodium sulfide solution or thiophosphoric anhydride solid to do dearsenification deleading reagent, after filtration, filtrate is sent to aeration workshop section, constantly blast air and stir, finally filtering 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 a literary composition, introduce the difference of polyphosphoric acid and common thermal phosphoric acid physico-chemical property and at present both at home and abroad present situation and the market outlook of polyphosphoric acid, proposed the impact of arsenic impurities on polyphosphoric acid and summarized several arsenic removing methods that current phosphoric acid extensively adopts.This article is pointed out, the dearsenic agent of preparation is joined in reactor and reacted with the arsenus acid in phosphoric acid, generates As
2s
3precipitation, then will be containing As
2s
3phosphoric acid be pumped into and in degassing tower, slough unnecessary H
2s gas, then deliver in strainer and filter, phosphoric acid product enters pan tank, filter residue As
2s
3enter slag cylinder, tail gas is discharged in atmosphere through blower fan after washing tower washing is up to standard." producing food grade phosphoric acid by industrial phosphoric acid operate continuously " (design of sulphur phosphorus and powder technology, 2005,6:27～30) literary composition and " brief talking Continuous Heat method food grade phosphoric acid produces " (guizhou chemical industry, 2005,30(4): 43～45) in a literary composition, all mentioned the removal methods of the rear remaining hydrogen sulfide of dearsenification reaction during food grade phosphoric acid is produced.This method is to blast air by gas blower dearsenification phosphoric acid stripping is removed to hydrogen sulfide, and the hydrogen sulfide of stripping absorbs with sodium carbonate solution, gained sodium sulfide solution for the production of other to the less demanding phosphoric acid salt of sulphur content.The arsenic slag that filtration is collected transports Shen Pin factory to after washing, being dried.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 uses sodium carbonate, introduces sodium ion, causes to a certain extent secondary pollution.From economic benefit and social benefit analysis, this method is not optimal selection.
We,, according to for many years to having the research for food grade phosphoric acid dearsenification reaction technology, set out in conjunction with phosphoric acid production is actual, and a kind of continuous dearsenification reactor has been invented in research.Through looking into all the other documents, in food grade phosphoric acid dearsenification reaction, all there is not the conversion unit that uses oblique angle jet agitation.Adopt the continuous dearsenification reactor of the present invention, can obtain stirring reaction effect more fully efficiently, greatly shorten the cycling time of the dearsenification reaction of industrial phosphoric acid, improve the production efficiency of food grade phosphoric acid and the continuity of production.
summary of the invention:
Object of the present invention: be the problems of the prior art that purify in order to solve the dearsenification of food grade phosphoric acid production process, improve the stirring condition of reaction mass, shorten the time of dearsenification reaction, improve the production efficiency of food grade phosphoric acid and the continuity of production, a kind of dearsenification reactor is continuously provided.
Technical scheme of the present invention is:
Adopt recycle pump that industrial phosphoric acid is delivered to oblique angle shower nozzle, industrial phosphoric acid under high pressure at full speed penetrates through nozzle, strongly spray to the industrial phosphoric acid that has been mixed with thiophosphoric anhydride dearsenic agent in reactive tank, realizing entirety turbulent flow stirs, make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid can be fast hybrid reaction fully, thereby shorten the cycling time of industrial phosphoric acid dearsenification reaction, improve the production efficiency of food grade phosphoric acid and the continuity of production.
The present invention is achieved in that
A kind of dearsenification reactor continuously, is mainly provided with dearsenification reactive tank, recycle pump and oblique angle shower nozzle and circulates and be connected successively; Described dearsenification reactive tank is provided with acid inlet, fluid-tight drain, acid mouth, opening for feed, the P of oblique angle shower nozzle
2s
5dog-house, valve I and valve II, the top of dearsenification reactive tank arranges respectively fluid-tight drain, opening for feed and P
2s
5dog-house, arranges valve I between fluid-tight drain and dearsenification reactive tank, between opening for feed and dearsenification reactive tank, valve II is set, P
2s
5dog-house arranges respectively the top of dearsenification reactive tank, flange and P for top cover
2s
5dog-house connects, and valve IV is arranged at the acid mouth of dearsenification reactive tank, and valve IV is connected with the opening for feed of recycle pump with flange, and oblique angle shower nozzle is arranged at the bottom of dearsenification reactive tank.
Above-described oblique angle shower nozzle arranges relative with the acid mouth of dearsenification reactive tank, and has a certain degree with dearsenification reactive tank bottom surface shape, and the acid inlet of oblique angle shower nozzle is connected with circulation tube by valve III.
Above-described certain angle is that the angle of oblique angle shower nozzle and dearsenification reactive tank bottom surface is 10 ~ 45 degree.
Above-described circulating-pump outlet arranges Y-tube, Y-tube wherein one be connected successively with acid inlet, valve III and the circulation tube of oblique angle shower nozzle, another is connected with the filtration unit that leads to peripheral hardware through valve V and discharge port, the 3rd is connected with circulating-pump outlet.
Above-described oblique angle shower nozzle, dearsenification reactive tank, circulation tube, fluid-tight blow-down pipe, recycle pump, flange are selected stainless material.
Advantage of the present invention and positively effect:
Adopt recycle pump that industrial phosphoric acid is delivered to oblique angle shower nozzle, industrial phosphoric acid penetrates at a high speed adding to depress from nozzle, to the industrial phosphoric acid sharp spray that is mixed with thiophosphoric anhydride in dearsenification reactive tank, realizing turbulent flow entirety stirs, make the abundant hybrid reaction of industrial phosphoric acid and thiophosphoric anhydride, shorten the cycling time of dearsenification reaction, improved the production efficiency of food grade phosphoric acid and the continuity of production.
accompanying drawing explanation:
Accompanying drawing 1: be structural representation of the present invention.
In figure, identify: 1, dearsenification reactive tank; 2, P
2s
5dog-house; 3, top cover; 4, fluid-tight drain; 5, valve I; 6, opening for feed; 7, valve II; 8, oblique angle shower nozzle; 9, acid inlet; 10, valve III; 11, circulation tube; 12, acid mouth; 13, valve IV; 14, recycle pump; 15, valve V; 16, discharge port.
embodiment:
Below in conjunction with embodiment, the present invention is described in detail.
embodiment 1:
This device is mainly provided with dearsenification reactive tank 1, recycle pump 14 and oblique angle shower nozzle 8 and circulates and be connected successively; Dearsenification reactive tank 1 is provided with acid inlet 9, fluid-tight drain 4, acid mouth 12, opening for feed 6, the P of oblique angle shower nozzle 8
2s
5dog-house 2, valve I 5 and valve II 7, the top of dearsenification reactive tank 1 arranges respectively fluid-tight drain 4, opening for feed 6 and P
2s
5dog-house 2, arranges valve I 5 between fluid-tight drain 4 and dearsenification reactive tank 1, between opening for feed 6 and dearsenification reactive tank 1, valve II 7 is set, P
2s
5dog-house 2 arranges top cover 3, top cover 3 use flange and P
2s
5dog-house 2 connects, and valve IV 13 is arranged at the acid mouth 12 of dearsenification reactive tank 1 bottom, and valve IV 13 use flanges are connected with the opening for feed of recycle pump 14, and oblique angle shower nozzle 8 is arranged at the bottom of dearsenification reactive tank 1 and has a certain degree with dearsenification reactive tank 1 bottom surface shape.
Oblique angle shower nozzle 8 arranges relative with the acid mouth 12 of dearsenification reactive tank 1, and the acid inlet 9 of oblique angle shower nozzle 8 is connected with circulation tube 11 by valve III 10.Oblique angle shower nozzle 8 is 25 degree with the angle of dearsenification reactive tank 1 bottom surface.Recycle pump 14 outlets arrange Y-tube, Y-tube wherein one be connected successively with acid inlet 9, valve III 10 and the circulation tube 11 of oblique angle shower nozzle 8, another is connected with the filtration unit that leads to peripheral hardware with discharge port 16 through valve V 15, and the 3rd is connected with recycle pump 14 outlets.
Oblique angle shower nozzle 8, dearsenification reactive tank 1, circulation tube 11, fluid-tight drain 4, recycle pump 14, flange are selected stainless material.
When work, from dearsenification reactive tank 1 opening for feed 6, industrial phosphoric acid is delivered to dearsenification reactive tank 2/3 liquid level, and keeps temperature 70 C, from P
2s
5dog-house 2 adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid, then close discharge valve V 15, ON cycle pump 14, industrial phosphoric acid is delivered to oblique angle shower nozzle 8 through circulation tube 11, industrial phosphoric acid under high pressure at full speed penetrates through oblique angle shower nozzle 8, strongly spray to the industrial phosphoric acid that has been mixed with thiophosphoric anhydride dearsenic agent in dearsenification reactive tank 1, realizing turbulent flow entirety stirs, make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, the phosphoric acid that completes dearsenification reaction is delivered to oblique angle shower nozzle 8 through recycle pump 14 parts and carries out internal recycle, a part is delivered to filtration plant and filters.
embodiment 2:
This device is mainly provided with dearsenification reactive tank 1, recycle pump 14 and oblique angle shower nozzle 8 and circulates and be connected successively; Dearsenification reactive tank 1 is provided with acid inlet 9, fluid-tight drain 4, acid mouth 12, opening for feed 6, the P of oblique angle shower nozzle 8
2s
5dog-house 2, valve I 5 and valve II 7, the top of dearsenification reactive tank 1 arranges respectively fluid-tight drain 4, opening for feed 6 and P
2s
5dog-house 2, arranges valve I 5 between fluid-tight drain 4 and dearsenification reactive tank 1, between opening for feed 6 and dearsenification reactive tank 1, valve II 7 is set, P
2s
5dog-house 2 arranges top cover 3, top cover 3 use flange and P
2s
5dog-house 2 connects, and valve IV 13 is arranged at the acid mouth 12 of dearsenification reactive tank 1 bottom, and valve IV 13 use flanges are connected with the opening for feed of recycle pump 14, and oblique angle shower nozzle 8 is arranged at the bottom of dearsenification reactive tank 1 and has a certain degree with dearsenification reactive tank 1 bottom surface shape.
Oblique angle shower nozzle 8 arranges relative with the acid mouth 12 of dearsenification reactive tank 1, and the acid inlet 9 of oblique angle shower nozzle 8 is connected with circulation tube 11 by valve III 10.Oblique angle shower nozzle 8 is 30 degree with the angle of dearsenification reactive tank 1 bottom surface.Recycle pump 14 outlets arrange Y-tube, Y-tube wherein one be connected successively with acid inlet 9, valve III 10 and the circulation tube 11 of oblique angle shower nozzle 8, another is connected with the filtration unit that leads to peripheral hardware with discharge port 16 through valve V 15, and the 3rd is connected with recycle pump 14 outlets.
Above-described oblique angle shower nozzle 8, dearsenification reactive tank 1, circulation tube 11, fluid-tight drain 4, recycle pump 14, flange are selected stainless material.
When work, from dearsenification reactive tank 1 opening for feed 6, industrial phosphoric acid is delivered to dearsenification reactive tank 3/4 liquid level, and keeps 80 ℃ of temperature, from P
2s
5dog-house 2 adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid, then close discharge valve V 15, ON cycle pump 14, industrial phosphoric acid is delivered to oblique angle shower nozzle 8 through circulation tube 11, industrial phosphoric acid under high pressure at full speed penetrates through oblique angle shower nozzle 8, strongly spray to the industrial phosphoric acid that has been mixed with thiophosphoric anhydride dearsenic agent in dearsenification reactive tank 1, realizing turbulent flow entirety stirs, make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, the phosphoric acid that completes dearsenification reaction is delivered to oblique angle shower nozzle 8 through recycle pump 14 parts and carries out internal recycle, a part is delivered to filtration plant and filters.
embodiment 3:
This device is mainly provided with dearsenification reactive tank 1, recycle pump 14 and oblique angle shower nozzle 8 and circulates and be connected successively; Dearsenification reactive tank 1 is provided with acid inlet 9, fluid-tight drain 4, acid mouth 12, opening for feed 6, the P of oblique angle shower nozzle 8
2s
5dog-house 2, valve I 5 and valve II 7, the top of dearsenification reactive tank 1 arranges respectively fluid-tight drain 4, opening for feed 6 and P
2s
5dog-house 2, arranges valve I 5 between fluid-tight drain 4 and dearsenification reactive tank 1, between opening for feed 6 and dearsenification reactive tank 1, valve II 7 is set, P
2s
5dog-house 2 arranges top cover 3, top cover 3 use flange and P
2s
5dog-house 2 connects, and valve IV 13 is arranged at the acid mouth 12 of dearsenification reactive tank 1 bottom, and valve IV 13 use flanges are connected with the opening for feed of recycle pump 14, and oblique angle shower nozzle 8 is arranged at the bottom of dearsenification reactive tank 1 and has a certain degree with dearsenification reactive tank 1 bottom surface shape.
Oblique angle shower nozzle 8 arranges relative with the acid mouth 12 of dearsenification reactive tank 1, and the acid inlet 9 of oblique angle shower nozzle 8 is connected with circulation tube 11 by valve III 10.Oblique angle shower nozzle 8 is 40 degree with the angle of dearsenification reactive tank 1 bottom surface.Recycle pump 14 outlets arrange Y-tube, Y-tube wherein one be connected successively with acid inlet 9, valve III 10 and the circulation tube 11 of oblique angle shower nozzle 8, another is connected with the filtration unit that leads to peripheral hardware with discharge port 16 through valve V 15, and the 3rd is connected with recycle pump 14 outlets.
Above-described oblique angle shower nozzle 8, dearsenification reactive tank 1, circulation tube 11, fluid-tight drain 4, recycle pump 14, flange are selected stainless material.
When work, from dearsenification reactive tank 1 opening for feed 6, industrial phosphoric acid is delivered to dearsenification reactive tank 4/5 liquid level, and keeps 90 ℃ of temperature, from P
2s
5dog-house 2 adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid, then close discharge valve V 15, ON cycle pump 14, industrial phosphoric acid is delivered to oblique angle shower nozzle 8 through circulation tube 11, industrial phosphoric acid under high pressure at full speed penetrates through oblique angle shower nozzle 8, strongly spray to the industrial phosphoric acid that has been mixed with thiophosphoric anhydride dearsenic agent in dearsenification reactive tank 1, realizing turbulent flow entirety stirs, make thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, the phosphoric acid that completes dearsenification reaction is delivered to oblique angle shower nozzle 8 through recycle pump 14 parts and carries out internal recycle, a part is delivered to filtration plant and filters.
Claims (4)
1. a continuous dearsenification reactor, is characterized in that: be mainly provided with dearsenification reactive tank (1), recycle pump (14) and oblique angle shower nozzle (8) and circulate and be connected successively; Described dearsenification reactive tank (1) is provided with acid inlet (9), fluid-tight drain (4), acid mouth (12), opening for feed (6), the P of oblique angle shower nozzle (8)
2s
5dog-house (2), valve I (5) and valve II (7), the top of dearsenification reactive tank (1) arranges respectively fluid-tight drain (4), opening for feed (6) and P
2s
5dog-house (2), between fluid-tight drain (4) and dearsenification reactive tank (1), valve I (5) is set, between opening for feed (6) and dearsenification reactive tank (1), valve II (7) is set, P
2s
5dog-house (2) arranges respectively the top of dearsenification reactive tank (1), flange and P for top cover (3)
2s
5dog-house (2) connects, valve IV (13) is arranged at the acid mouth (12) of dearsenification reactive tank (1), valve IV (13) is connected with the opening for feed of recycle pump (14) with flange, and oblique angle shower nozzle (8) is arranged at the bottom of dearsenification reactive tank (1).
2. the continuous dearsenification reactor of one according to claim 1, it is characterized in that: described oblique angle shower nozzle (8) arranges relative with the acid mouth (12) of dearsenification reactive tank (1), and have a certain degree with dearsenification reactive tank (1) bottom surface shape, the acid inlet (9) of oblique angle shower nozzle (8) is connected with circulation tube (11) by valve III (10).
3. the continuous dearsenification reactor of one according to claim 2, is characterized in that: described certain angle is that oblique angle shower nozzle (8) is 10-45 degree with the angle of dearsenification reactive tank (1) bottom surface.
4. the continuous dearsenification reactor of one according to claim 1 and 2, it is characterized in that: the outlet of described recycle pump (14) arranges Y-tube, Y-tube wherein one be connected successively with acid inlet (9), valve III (10) and the circulation tube (11) of oblique angle shower nozzle (8), another is connected with the filtration unit that leads to peripheral hardware with discharge port (16) through valve V (15), and the 3rd is connected with the outlet of recycle pump (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580534.7A CN103011108B (en) | 2012-12-27 | 2012-12-27 | Continuous arsenic removal reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580534.7A CN103011108B (en) | 2012-12-27 | 2012-12-27 | Continuous arsenic removal reactor |
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| Publication Number | Publication Date |
|---|---|
| CN103011108A CN103011108A (en) | 2013-04-03 |
| CN103011108B true CN103011108B (en) | 2014-05-28 |
Family
ID=47960292
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210580534.7A Active CN103011108B (en) | 2012-12-27 | 2012-12-27 | Continuous arsenic removal reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103011108B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203018093U (en) * | 2012-12-27 | 2013-06-26 | 广西明利化工有限公司 | Continuous arsenic-removal reactor |
-
2012
- 2012-12-27 CN CN201210580534.7A patent/CN103011108B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203018093U (en) * | 2012-12-27 | 2013-06-26 | 广西明利化工有限公司 | Continuous arsenic-removal reactor |
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| Publication number | Publication date |
|---|---|
| CN103011108A (en) | 2013-04-03 |
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