CN203284212U - Novel industrial-grade phosphorous acid production device - Google Patents
Novel industrial-grade phosphorous acid production device Download PDFInfo
- Publication number
- CN203284212U CN203284212U CN2013202482584U CN201320248258U CN203284212U CN 203284212 U CN203284212 U CN 203284212U CN 2013202482584 U CN2013202482584 U CN 2013202482584U CN 201320248258 U CN201320248258 U CN 201320248258U CN 203284212 U CN203284212 U CN 203284212U
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- phosphorous acid
- novel industrial
- phosphorus trichloride
- acid production
- centrifugal drier
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Abstract
The utility model discloses a novel industrial-grade phosphorous acid production device which belongs to the field of fine chemical engineering. The novel industrial-grade phosphorous acid production device comprises a hydrolysis reaction kettle, a concentration and crystallization kettle and a centrifugal drier, wherein a water inlet, a phosphorous acid saturated liquid inlet, a phosphorus trichloride inlet and a hydrogen chloride gas outlet are formed in the hydrolysis reaction kettle; a first slurry pump pipeline is arranged between the hydrolysis reaction kettle and the concentration and crystallization kettle; a water outlet is formed in the concentration and crystallization kettle; a first conveyor is arranged between the concentration and crystallization kettle and the centrifugal drier; a water outlet and a finished product outlet are formed in the centrifugal drier. The device takes phosphorus trichloride, phosphorous acid saturated liquid and water as raw materials to produce phosphorous acid through the procedures of hydrolysis of phosphorus trichloride, crystallization of phosphorous acid crude products, centrifugal drying and the like. The device has the main advantages that the general equipment is used, reaction conditions are mild, and purity of the product is high.
Description
Technical field
The utility model belongs to field of fine chemical, relates in particular to a kind of Novel industrial phosphorous acid production equipment.
Background technology
Phosphorous acid is a kind of oxygen acid of phosphorus, and molecular formula is H3PO3, and molecular weight is 82.00, and fusing point is 74 ℃, and boiling point is 200 ℃, and outward appearance is clear crystal; Phosphorous acid is diprotic acid, belongs to mineral compound, and its acidity is slightly stronger than phosphoric acid, and it has strong reducing property, easily silver ion reduction is become argent, sulfate reduction can be become sulfurous gas, and strong water absorbability and deliquescence are arranged, and is corrosive; Soluble in water and pure, in air, slow oxidation becomes phosphoric acid, is decomposed into phosphuret-(t)ed hydrogen and phosphoric acid in the time of 180 ℃.The synthetic route of phosphorous acid generally adopts: 1. hydrolysis method, be about to the phosphorus trichloride hydrolysis, and through steam refining, crystallisation by cooling and obtaining; 2. be dissolved in concentrated hydrochloric acid by phosphorus trichloride, then in low temperature, boil off hydrochloric acid and obtain; Also can by phosphorus trioxide slowly with water effect generation; The purposes of phosphorous acid is: be used as reductive agent and pesticide intermediate, nylon whitening agent; Being the raw material of making phosphite, is also the raw material of making stabilizer for plastics and organophosphorus pesticide; , as the stablizer of polycarbonate, also be used as the antioxidant of nylon 1010; , as chemical reagent, also can be used for producing High-efficient Water treatment agent Amino Trimethylene Phosphonic Acid.The utility model is a kind of Novel industrial phosphorous acid production equipment, this device is take hydrolytic reaction pot, condensing crystal still, centrifugal drier as equipment, take phosphorus trichloride, phosphorous acid saturated solution, water as raw material, the operation such as the hydrolysis by phosphorus trichloride, the crystallization of phosphorous acid crude product, centrifugal drying makes phosphorous acid.This equipment of using of device is hydrogenchloride as general-purpose equipment, with short production cycle, expellant gas, and recovery can be made into hydrochloric acid, and the liquid of discharge is harmless liquid, and the product that obtains is technical grade phosphorous acid.
Summary of the invention
The problem that the utility model mainly solves is to provide a kind of new device of producing technical grade phosphorous acid in batches, this device is take hydrolytic reaction pot, condensing crystal still, centrifugal drier as equipment, take phosphorus trichloride, phosphorous acid saturated solution, water as raw material, the operations such as the hydrolysis by phosphorus trichloride, the crystallization of phosphorous acid crude product, centrifugal drying make phosphorous acid, and the major advantage of this device is: the equipment that uses as general-purpose equipment, reaction conditions is gentle, product purity is high.
The technical solution adopted in the utility model is:
A kind of Novel industrial phosphorous acid production equipment comprises: hydrolytic reaction pot, condensing crystal still, centrifugal drier; It is characterized in that: hydrolytic reaction pot is provided with water inlet, the import of phosphorous acid saturated solution, phosphorus trichloride import, hydrogen chloride gas outlet, be provided with the first shurry pump pipeline between hydrolytic reaction pot and condensing crystal still, the condensing crystal still is provided with water out, be provided with the first transfer roller between condensing crystal still and centrifugal drier, centrifugal drier is provided with water out and product outlet.
Further technical scheme of the present utility model is:
Described the first shurry pump is stainless steel; Pipeline is the polyethylene material.
Described the first transfer roller is rotary conveyor.
The beneficial effects of the utility model are: the mechanism that a kind of manufacture level phosphorous acid is provided, this equipment of using of device as general-purpose equipment, with short production cycle, product is high as technical grade phosphorous acid yield, expellant gas is hydrogenchloride, recovery can be made into hydrochloric acid, and the liquid of discharge is harmless liquid.
Description of drawings:
Be structure iron of the present utility model as Fig. 1.
Embodiment
Further illustrate the particular content that uses this new device manufacture level phosphorous acid most preferred embodiment below in conjunction with accompanying drawing:
1, a kind of mechanism of manufacture level phosphorous acid comprises: hydrolytic reaction pot 1, condensing crystal still 2, centrifugal drier 3; It is characterized in that: hydrolytic reaction pot 1 is provided with water inlet 4, phosphorous acid saturated solution import 5, phosphorus trichloride import 6, hydrogen chloride gas outlet 7,2 of hydrolytic reaction pot 1 and condensing crystal stills are provided with the first shurry pump pipeline 8, condensing crystal still 2 is provided with water out 9,3 of condensing crystal still 2 and centrifugal driers are provided with the first transfer roller 10, and centrifugal drier 3 is provided with water out 11 and product outlet 12.Described the first shurry pump is stainless steel; Pipeline is the polyethylene material; Described the first transfer roller is rotary conveyor.
2, with the water of formula ratio and phosphorous acid saturated solution by being arranged at the water inlet 4 on hydrolytic reaction pot 1, phosphorous acid saturated solution import 5 adds respectively hydrolytic reaction pot 1, starting agitator stirs, the rotating speed of agitator is 35-45 rev/min, the phosphorus trichloride of formula ratio is splashed in hydrolytic reaction pot 1 slowly by the phosphorus trichloride import 6 that is arranged on hydrolytic reaction pot 1, exothermic heat of reaction, the speed that drips phosphorus trichloride by control comes temperature of reaction in controlled hydrolysis reactor 1 between 82-86 ℃, after dropwising, phosphorus trichloride stops stirring, insulation reaction 1.2-1.4 hour, the hydrogen chloride gas that reaction obtains is made hydrochloric acid by hydrogen chloride gas outlet 7 recovery that are arranged on hydrolytic reaction pot 1, remaining liquid is phosphorous acid aqueous solution.
3, phosphorous acid aqueous solution is sent into condensing crystal still condensing crystal by the first shurry pump pipeline 8 that is arranged at 2 of hydrolytic reaction pot 1 and condensing crystal stills, after the phosphorous acid crystallization, remaining moisture is by after being arranged at water out 9 discharges on condensing crystal still 2, and remaining in still is the phosphorous acid crude product; Phosphorous acid crude product after crystallization is sent into centrifugal drier 3 by the first transfer roller 10 that is arranged at 3 of condensing crystal still 2 and centrifugal driers carry out the high speed drying, the moisture that throws away is discharged by the water out 11 that is arranged on centrifugal drier 3, the water content of remaining phosphorous acid is to stop after 0.5-1% drying, get final product by the product outlet discharging storage that is arranged on centrifugal drier 3, finished product is technical grade phosphorous acid.
Claims (3)
1. a Novel industrial phosphorous acid production equipment, comprising: hydrolytic reaction pot (1), condensing crystal still (2), centrifugal drier (3); It is characterized in that: hydrolytic reaction pot (1) is provided with water inlet (4), phosphorous acid saturated solution import (5), phosphorus trichloride import (6), hydrogen chloride gas outlet (7), be provided with the first shurry pump pipeline (8) between hydrolytic reaction pot (1) and condensing crystal still (2), condensing crystal still (2) is provided with water out (9), be provided with the first transfer roller (10) between condensing crystal still (2) and centrifugal drier (3), centrifugal drier (3) is provided with water out (11) and product outlet (12).
2. a kind of Novel industrial phosphorous acid production equipment as claimed in claim 1, it is characterized in that: described the first shurry pump is stainless steel; Pipeline is the polyethylene material.
3. a kind of Novel industrial phosphorous acid production equipment as claimed in claim 1, it is characterized in that: described the first transfer roller is rotary conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202482584U CN203284212U (en) | 2013-05-09 | 2013-05-09 | Novel industrial-grade phosphorous acid production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202482584U CN203284212U (en) | 2013-05-09 | 2013-05-09 | Novel industrial-grade phosphorous acid production device |
Publications (1)
| Publication Number | Publication Date |
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| CN203284212U true CN203284212U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013202482584U Expired - Fee Related CN203284212U (en) | 2013-05-09 | 2013-05-09 | Novel industrial-grade phosphorous acid production device |
Country Status (1)
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| CN (1) | CN203284212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964406A (en) * | 2014-06-02 | 2014-08-06 | 宜昌凯翔化工有限公司 | Phosphorous acid production system |
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2013
- 2013-05-09 CN CN2013202482584U patent/CN203284212U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964406A (en) * | 2014-06-02 | 2014-08-06 | 宜昌凯翔化工有限公司 | Phosphorous acid production system |
| CN103964406B (en) * | 2014-06-02 | 2016-05-11 | 宜昌凯翔化工有限公司 | Phosphorous acid production system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131113 Termination date: 20140509 |