CN103011107B - Injection type arsenic removal reaction method - Google Patents
Injection type arsenic removal reaction method Download PDFInfo
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- CN103011107B CN103011107B CN201210580531.3A CN201210580531A CN103011107B CN 103011107 B CN103011107 B CN 103011107B CN 201210580531 A CN201210580531 A CN 201210580531A CN 103011107 B CN103011107 B CN 103011107B
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- phosphoric acid
- industrial phosphoric
- dearsenification
- pump
- industrial
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 32
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 17
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 title abstract 7
- 239000007924 injection Substances 0.000 title abstract 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 222
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 110
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000007872 degassing Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- CYQAYERJWZKYML-UHFFFAOYSA-N phosphorus pentasulfide Chemical compound S1P(S2)(=S)SP3(=S)SP1(=S)SP2(=S)S3 CYQAYERJWZKYML-UHFFFAOYSA-N 0.000 claims description 25
- 238000001914 filtration Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000007789 gas Substances 0.000 abstract description 6
- 230000001351 cycling effect Effects 0.000 abstract description 4
- RJJZTJWLEZHXMS-UHFFFAOYSA-N [As].P12(=S)SP3(=S)SP(=S)(S1)SP(=S)(S2)S3 Chemical compound [As].P12(=S)SP3(=S)SP(=S)(S1)SP(=S)(S2)S3 RJJZTJWLEZHXMS-UHFFFAOYSA-N 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 3
- 235000011007 phosphoric acid Nutrition 0.000 description 88
- 239000012535 impurity Substances 0.000 description 7
- 238000001556 precipitation Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011067 equilibration Methods 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
- 239000002253 acid Substances 0.000 description 3
- 239000000796 flavoring agent 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
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 239000000203 mixture Substances 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
- 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
- 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
- 238000007599 discharging Methods 0.000 description 1
- HMYQBVIBTIXKEW-UHFFFAOYSA-L disodium hydrogen carbonate sulfanide Chemical compound S.C([O-])([O-])=O.[Na+].[Na+] HMYQBVIBTIXKEW-UHFFFAOYSA-L 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000706 filtrate 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
- 238000000746 purification Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 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
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- Fertilizers (AREA)
Abstract
The invention discloses an injection type arsenic removal reaction method. According to the method, industrial phosphoric acid is conveyed to an injection pump by adopting a circulating pump; the industrial phosphoric acid is ejected at a high speed under high pressure via a nozzle of the injection pump; negative pressure is generated in a mixing chamber of the injection pump to ensure that hydrogen sulfide gas in the phosphoric acid degassing process is sucked into the mixing chamber by the injection pump and fully mixed and reacted with the industrial phosphoric acid, strong injection is carried out on the industrial phosphoric acid mixed with a phosphorus pentasulfide arsenic removal catalyst in a reaction kettle; and turbulent stirring is formed to ensure that the phosphorus pentasulfide arsenic removal catalyst can be rapidly and fully mixed and reacted with the industrial phosphoric acid. Therefore, the cycling time of arsenic removal reaction is shortened; the production efficiency and the production continuity of the food-grade phosphoric acid are increased; the hydrogen sulfide gas in the phosphoric acid degassing process is fully recycled; the consumption of the phosphorus pentasulfide arsenic removal catalyst is reduced; the secondary pollution of harmful hydrogen sulfide gas is avoided; the factory and surrounding environments are effectively protected; and the economic benefit, the social benefit and the ecological benefit are increased.
Description
technical field:
The invention belongs to phosphorous chemical industry technology and environmental protection technical field, relate to a kind of jet-type dearsenification reaction method.
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, it is raw material that food grade phosphoric acid produces main employing industrial phosphoric acid, and in production process, the removing sulfuldioxide removing especially arsenic of impurity is very important.
The method of phosphoric acid dearsenification mainly contains: 1. sulphide precipitation: by adding certain precipitation agent in phosphate raw material, makes it produce indissoluble or the precipitation of insoluble compound, is then isolated low-arsenic phosphorus acid product by strainer.2. solvent extration: dissolve in organic solvent based on phosphoric acid, arsenic impurities is then extracted out, thus make it be separated.3. ion exchange method: with strong-acid ion exchange resin process phosphoric acid, thus go out arsenic impurities.Sulphide precipitation, because required step and equipment are 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↓
By adding P in industrial phosphoric acid
2s
5carry out dearsenification reaction, namely filter precipitation obtains dearsenification phosphoric acid excessively.After this method dearsenification, nubbin hydrogen sulfide in phosphoric acid, must remove through stripping.
In prior art, food grade phosphoric acid production process route is divided into Re Fa and wet method two kinds.The gordian technique of two kinds of route production food grade phosphoric acids is all removing of impurity.As Chinese patent 200910062940.2 proposes a kind of method of producing food grade phosphoric acid with refined wet phosphoric acid, defluorinating agent is done by adding active silica, add sodium sulfide solution or thiophosphoric anhydride solid does 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, describe difference and the at present both at home and abroad present situation of polyphosphoric acid and the market outlook of polyphosphoric acid and common thermal phosphoric acid physico-chemical property, propose arsenic impurities to the impact of polyphosphoric acid and outline several arsenic removing methods that current phosphoric acid extensively adopts.This article is pointed out, is joined by the dearsenic agent of preparation in reactor and reacts with the arsenus acid in phosphoric acid, generates As
2s
3precipitation, then will containing As
2s
3phosphoric acid be pumped in degassing tower and 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 air through blower fan after washing tower washing is up to standard." producing food grade phosphoric acid by industrial phosphoric acid operate continuously " (sulphur phosphorus designs and powder technology, 2005,6:27 ~ 30) civilian and " brief talking Continuous Heat method food grade phosphoric acid to produce " (guizhou chemical industry, 2005,30(4): 43 ~ 45) in a literary composition, all refer to the removal methods of remaining hydrogen sulfide after dearsenification reaction in food grade phosphoric acid production.This method be by gas blower blast air to dearsenification phosphoric acid stripping removing hydrogen sulfide, the hydrogen sulfide sodium carbonate solution of stripping absorbs, gained sodium sulfide solution for the production of other to the less demanding phosphoric acid salt of sulphur content.Collecting by filtration to arsenic slag through washing, transport Shen Pin factory to after drying.This method is simple to operate, good impurity removing effect, avoids hydrogen sulfide directly to discharge and causes environmental pollution, but its absorption agent uses sodium carbonate, introduces sodium ion, causes secondary pollution to a certain extent.From economic benefit and social benefit analysis, this method is not optimal selection.
The present inventor, according to for many years to the research had for food grade phosphoric acid dearsenification reaction technology, sets out in conjunction with phosphoric acid production is actual, and jet-type dearsenification reaction method has been invented in research.Through looking into all the other documents, in food grade phosphoric acid dearsenification reaction, all there is not the dearsenification reaction method using jet-type to stir.The hydrogen sulfide adopting jet-type dearsenification reaction method of the present invention not only fully can recycle degassing process to be fallen by stripping, avoid secondary pollution, greatly can also shorten the cycling time of the dearsenification reaction of industrial phosphoric acid in reactive tank, there is good economic benefit and social benefit.
summary of the invention:
Object of the present invention: be the problems of the prior art in order to solve food grade phosphoric acid production process dearsenification purification, shorten the time of dearsenification reaction, improve the production efficiency of food grade phosphoric acid and the continuity of production, hydrogen sulfide in abundant recycling 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 and a kind of jet-type dearsenification reaction method is provided.
Technical scheme of the present invention is:
The industrial phosphoric acid penetrated at a high speed from squirt pump forms strong turbulent mixing effect in reactive tank, enable thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, greatly shorten the cycling time of the dearsenification reaction of industrial phosphoric acid in reactive tank, improve the production efficiency of food grade phosphoric acid and the continuity of production.The hydrogen sulfide that the negative pressure that squirt pump produces simultaneously can be used for reclaiming degassing process generation is used; decrease the consumption of thiophosphoric anhydride dearsenic agent; avoid obnoxious flavour hydrogen sulfide to secondary pollution; effectively protect factory and surrounding enviroment, increase economic efficiency, social benefit and ecological benefits.
The present invention is achieved in that
A kind of jet-type dearsenification reaction method, adopt recycle pump that industrial phosphoric acid is delivered to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through the nozzle of squirt pump, in the mixing section of squirt pump, produce negative pressure makes the injected pump of the hydrogen sulfide in phosphoric acid degassing process suck in mixing section, and hybrid reaction abundant with industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactor sprays strongly, form turbulent flow to stir, enable thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, technological operation step is as follows:
(1) a certain amount of industrial phosphoric acid is delivered in dearsenification reactive tank, heat and keep certain temperature;
(2) dearsenic agent thiophosphoric anhydride is added by a certain percentage;
(3) ON cycle pump, phosphoric acid in pressurized circulation reactive tank, utilize squirt pump to spray abundant stirring to the industrial phosphoric acid in reactive tank, complete the phosphoric acid part internal recycling of dearsenification reaction, a part is sent to filtration plant and carries out filtration and obtain dearsenification phosphoric acid.
Above-described a certain amount of industrial phosphoric acid is the liquid level of dearsenification reactive tank volume 1/2 ~ 4/5.
Above-described certain temperature is control 60-100 DEG C.
Above-described certain proportion is dearsenic agent thiophosphoric anhydride is 1.3:1 with the ratio of arsenic content in industrial phosphoric acid.
Above-described dearsenification reactive tank, recycle pump circulate successively with squirt pump and are connected.
Advantage of the present invention and positively effect:
1, the negative pressure that jet-type dearsenification reaction method utilizes squirt pump to produce fully absorbs the hydrogen sulfide that degassing process produces, and both avoids secondary pollution, and reduces again the use cost of dearsenic agent, and had good economic benefit, social benefit and ecological benefits;
2, hydrogen sulfide and industrial phosphoric acid are after the abundant hybrid reaction of the mixing section of squirt pump, the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactive tank sprays strongly, reach the effect that turbulent flow stirs, enable thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, substantially reduce the cycling time of the dearsenification reaction of industrial phosphoric acid in reactor, improve the production efficiency of food grade phosphoric acid and the continuity of production, there is good economic benefit.
accompanying drawing illustrates:
Accompanying drawing 1: be present invention process schematic flow sheet.
As shown in the figure, this technical process mainly comprises: charging, pressurized jet stirring reaction, vacuum suction, discharging.
embodiment:
Below in conjunction with drawings and Examples, the present invention is further described, and institute splits embodiment and is only the present invention is described and is not limited to the present invention.
embodiment one:
From dearsenification reactive tank opening for feed, industrial phosphoric acid is squeezed in dearsenification reactive tank, to reactive tank 2/3 liquid level, and keep temperature 80 DEG C, then from P
2s
5dog-house adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid and reacts 30 minutes, open recycle pump, the valve of equilibration tube and circulation tube, ON cycle pump, by the industrial phosphoric acid positive delivery of dearsenification reactive tank to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through nozzle, the negative pressure produced in squirt pump mixing section makes the hydrogen sulfide in phosphoric acid degassing process enter squirt pump suction chamber, and in squirt pump mixing section and the abundant hybrid reaction of industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactor sprays strongly, form turbulent flow to stir, thiophosphoric anhydride dearsenic agent and the quick hybrid reaction fully of industrial phosphoric acid, the phosphoric acid completing dearsenification reaction is delivered to squirt pump through a recycle pump part and carries out internal recycle, a part is delivered to filtration plant and filters.
embodiment two:
From dearsenification reactive tank opening for feed, industrial phosphoric acid is squeezed in dearsenification reactive tank, to reactive tank 1/2 liquid level, and keep temperature 95 DEG C, then from P
2s
5dog-house adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid and reacts 30 minutes, open recycle pump, the valve of equilibration tube and circulation tube, ON cycle pump, by the industrial phosphoric acid positive delivery of dearsenification reactive tank to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through nozzle, the negative pressure produced in squirt pump mixing section makes the hydrogen sulfide in phosphoric acid degassing process enter squirt pump suction chamber, and in squirt pump mixing section and the abundant hybrid reaction of industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactor sprays strongly, form turbulent flow to stir, thiophosphoric anhydride dearsenic agent and the quick hybrid reaction fully of industrial phosphoric acid, the phosphoric acid completing dearsenification reaction is delivered to squirt pump through a recycle pump part and carries out internal recycle, a part is delivered to filtration plant and filters.
embodiment three:
From dearsenification reactive tank opening for feed, industrial phosphoric acid is squeezed in dearsenification reactive tank, to reactive tank 4/5 liquid level, and keep temperature 65 DEG C, then from P
2s
5dog-house adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid and reacts 30 minutes, open recycle pump, the valve of equilibration tube and circulation tube, ON cycle pump, by the industrial phosphoric acid positive delivery of dearsenification reactive tank to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through nozzle, the negative pressure produced in squirt pump mixing section makes the hydrogen sulfide in phosphoric acid degassing process enter squirt pump suction chamber, and in squirt pump mixing section and the abundant hybrid reaction of industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactor sprays strongly, form turbulent flow to stir, thiophosphoric anhydride dearsenic agent and the quick hybrid reaction fully of industrial phosphoric acid, the phosphoric acid completing dearsenification reaction is delivered to squirt pump through a recycle pump part and carries out internal recycle, a part is delivered to filtration plant and filters.
embodiment four:
From dearsenification reactive tank opening for feed, industrial phosphoric acid is squeezed in dearsenification reactive tank, to reactive tank 3/4 liquid level, and keep temperature 75 DEG C, then from P
2s
5dog-house adds thiophosphoric anhydride dearsenic agent by 1.3 times of arsenic content in industrial phosphoric acid and reacts 30 minutes, open recycle pump, the valve of equilibration tube and circulation tube, ON cycle pump, by the industrial phosphoric acid positive delivery of dearsenification reactive tank to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through nozzle, the negative pressure produced in squirt pump mixing section makes the hydrogen sulfide in phosphoric acid degassing process enter squirt pump suction chamber, and in squirt pump mixing section and the abundant hybrid reaction of industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in reactor sprays strongly, form turbulent flow to stir, thiophosphoric anhydride dearsenic agent and the quick hybrid reaction fully of industrial phosphoric acid, the phosphoric acid completing dearsenification reaction is delivered to squirt pump through a recycle pump part and carries out internal recycle, a part is delivered to filtration plant and filters.
Claims (4)
1. a jet-type dearsenification reaction method, it is characterized in that: adopt recycle pump that industrial phosphoric acid is delivered to squirt pump, industrial phosphoric acid under high pressure at full speed penetrates through the nozzle of squirt pump, in the mixing section of squirt pump, produce negative pressure makes the injected pump of the hydrogen sulfide in industrial phosphoric acid degassing process suck in mixing section, and hybrid reaction abundant with industrial phosphoric acid, then the industrial phosphoric acid being mixed with thiophosphoric anhydride dearsenic agent in dearsenification reactive tank sprays strongly, form turbulent flow to stir, enable thiophosphoric anhydride dearsenic agent and industrial phosphoric acid hybrid reaction fully fast, technological operation step is as follows:
(1) a certain amount of industrial phosphoric acid is delivered in dearsenification reactive tank, heat and keep certain temperature;
(2) dearsenic agent thiophosphoric anhydride is added by a certain percentage;
(3) industrial phosphoric acid in ON cycle pump pressurization dearsenification reactive tank, generation negative pressure in the mixing section of squirt pump is utilized to make the injected pump of the hydrogen sulfide in industrial phosphoric acid degassing process suck in mixing section, and hybrid reaction abundant with industrial phosphoric acid, again abundant stirring is sprayed to the industrial phosphoric acid in dearsenification reactive tank, complete the industrial phosphoric acid part internal recycling of dearsenification reaction, a part is sent to filtration plant and carries out filtration and obtain dearsenification industrial phosphoric acid.
2. a kind of jet-type dearsenification reaction method according to claim 1, is characterized in that: described a certain amount of industrial phosphoric acid is the liquid level of dearsenification reactive tank volume 1/2 ~ 4/5.
3. a kind of jet-type dearsenification reaction method according to claim 1, is characterized in that: described certain temperature is control 60 ~ 100 DEG C.
4. a kind of jet-type dearsenification reaction method according to claim 1, is characterized in that: described certain proportion is dearsenic agent thiophosphoric anhydride is 1.3: 1 with the ratio of arsenic content in industrial phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580531.3A CN103011107B (en) | 2012-12-27 | 2012-12-27 | Injection type arsenic removal reaction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580531.3A CN103011107B (en) | 2012-12-27 | 2012-12-27 | Injection type arsenic removal reaction method |
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| CN103011107B true CN103011107B (en) | 2015-04-22 |
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ID=47960291
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|---|---|---|---|
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032581C (en) * | 1992-09-08 | 1996-08-21 | 云南省磷业公司 | Continuous production technology for edible phosphoric acid |
| CN1180658A (en) * | 1997-11-18 | 1998-05-06 | 张瑞宁 | Technology for preparing high-purity phosphoric acid |
-
2012
- 2012-12-27 CN CN201210580531.3A patent/CN103011107B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032581C (en) * | 1992-09-08 | 1996-08-21 | 云南省磷业公司 | Continuous production technology for edible phosphoric acid |
| CN1180658A (en) * | 1997-11-18 | 1998-05-06 | 张瑞宁 | Technology for preparing high-purity phosphoric acid |
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| CN103011107A (en) | 2013-04-03 |
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