CN203781849U - Electronic grade phosphoric acid infrared heating crystallization device - Google Patents
Electronic grade phosphoric acid infrared heating crystallization device Download PDFInfo
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- CN203781849U CN203781849U CN201320882495.6U CN201320882495U CN203781849U CN 203781849 U CN203781849 U CN 203781849U CN 201320882495 U CN201320882495 U CN 201320882495U CN 203781849 U CN203781849 U CN 203781849U
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Abstract
The utility model discloses an electronic grade phosphoric acid infrared heating crystallization device. The crystallization device comprises a crystallizer, an acid outlet pump, an acid mixing tank and a circulating pump and is characterized in that the crystallizer comprises a crystallization box, a U-shaped crystallizer, an infrared heater, a crystal washing device, connecting pipes and a reinforcing ring; the crystallizer (5) is also provided with a seed crystal feeding hole (54), an acid outlet (58), a cold medium inlet (51) and a cold medium outlet (55); the acid outlet (58) of the crystallizer (5) is connected with the acid outlet pump (6) via a valve; a feeding hole (21), a water inlet (22), an air outlet (23) and a circulating acid inlet (25) are formed in the upper part and top of the acid mixing tank (2); a circulating acid outlet (24) and a phosphoric acid product outlet (20) are formed in the lower part of the acid mixing tank (2); the phosphoric acid product outlet (20) is connected with a product tank (1). The device is easy to operate, is suitable for large-scale industrial production, and has better economic benefits. The product has stable quality and high purity.
Description
Technical field
The utility model belongs to technical field of inorganic chemical industry, relates to a kind of electron-level phosphoric acid infrared heating crystallization apparatus.
Background technology
Phosphoric acid is the important component part of chemical industry, is important basic chemical industry raw material.The production method of phosphoric acid is divided into two kinds of thermal phosphoric acid and phosphoric acid by wet processes.Thermal phosphoric acid refers to take Rock Phosphate (72Min BPL) as raw material, is first processed into element phosphor, then the phosphoric acid processing with element phosphor; Phosphoric acid by wet process refers to that take Rock Phosphate (72Min BPL) and mineral acid is raw material, the phosphoric acid directly processing.The thick product of phosphoric acid by wet process is impure more, mainly for the production of fertilizer; Thermal phosphoric acid but has the advantages such as product concentration is high, impurity is few, can be used for manufacturing food and PHOSPHORIC ACID TECH.GRADE product salt.The production method of thermal phosphoric acid has three kinds: method one is the perfect combustion method that after directly burning with phosphorous furnace gas, water absorbs phosphoric acid processed; Method two is by phosphorous furnace gas and appropriate air mixed, makes phosphorus steam and phosphine gas oxidized, then gas oxidation products Vanadium Pentoxide in FLAKES is made to phosphoric acid with dilute phosphoric acid absorption; Method three is that the phosphorus in phosphorous furnace gas is condensed into liquid phosphorus, with air combustion, generates Vanadium Pentoxide in FLAKES, and then water (or acid) absorbs the liquid phosphorus combustion method that makes phosphoric acid.At present, adopt liquid phosphorus combustion method to produce thermal phosphoric acid more.In thermal phosphoric acid is produced, existing phosphorus supply method is high-order phosphorus supply method.With high-pressure pump or pressurized air, the molten phosphorus in phosphorus-melting groove melting is transported to after header tank, with high pressure spraying, flows into roasting kiln epimere, spraying and burning.The advantage of this method is: molten phosphorus is through sprinkling, sufficient combustion; But its shortcoming is: owing to adopting power machine to carry, and the one, the input of increase equipment funds; The 2nd, strengthened energy consumption; The 3rd, delivery safety performance requriements is high.In thermal phosphoric acid is produced, the quality of the combustion position of yellow phosphorus in roasting kiln, the yield important to the quality of phosphoric acid product and phosphorus.The problems such as yellow phosphorus burning is insufficient may cause that the color of phosphoric acid product is partially yellow, readily oxidizable substance exceeds standard, chimney emits tobacco, acid glue is too much at the bottom of roasting kiln.In currently available technology, adopt liquid phosphorus combustion method to produce thermal phosphoric acid more.With high-pressure pump or pressurized air, the molten phosphorus in phosphorus-melting groove melting is transported to after header tank, with high pressure spraying, flows into roasting kiln burning.Though yellow phosphorus enters roasting kiln in the mode of high pressure spraying in this method, better dispersed, the yellow phosphorus that enters roasting kiln is still droplet-like, and it is difficult to reach with air the state fully contacting, and then has affected to a certain extent the combustion efficacy of yellow phosphorus.Given this, we are from phosphoric acid production reality for many years, and a kind of electron-level phosphoric acid dividing plate crystallization apparatus has been invented in research, through reading up the literature, do not have this electron-level phosphoric acid dividing plate crystallization apparatus of use.Adopt apparatus of the present invention to make yellow phosphorus gasification fully mix afterfire with air, avoided in traditional combustion mode, the disadvantageous effect that yellow phosphorus burning does not thoroughly bring, creates good economic benefit and social benefit.
Chinese patent: number of patent application 201120108876.X, notification number CN202390205 U, day for announcing 2012.08. 22, this utility model discloses a kind of device of producing electron-level phosphoric acid, comprise phosphoric acid subsider, crystallizer A, crystallizer B and product groove, it is characterized in that: phosphoric acid subsider is connected to crystallizer A by pipeline A, crystallizer A below is connected with strainer A, strainer A discharge port connects complex acid groove A, complex acid groove A is connected to crystallizer B by pipeline, crystallizer B below is connected with filter B, filter B discharge port connects complex acid groove B, complex acid groove B is connected to product groove by pipeline B, crystallizer A, crystallizer B5 with chuck respectively with refrigerating unit, heating unit is connected.Also there is complex structure, inconvenient operation in this utility model, the shortcoming that efficiency is not high.
Chinese patent: number of patent application 201110096758.6, notification number CN102198937 A, day for announcing 2011.09. 28, this invention has proposed a kind of multi-stage static and has dissolved crystallization process and prepare electron-level phosphoric acid.Raw material phosphor acid solution body disposable is added in prilling tower, the logical cool/heat medium of prilling tower chuck is controlled phosphoric acid liquid temperature: when the cooling of phosphoric acid liquid reaches 15 ~ 280C, constant temperature adds crystal seed to prilling tower: two every grade of operations that dissolve crystallization to level Four static state thereafter comprise: material decrease temperature crystalline → constant temperature → discharge portion adheres to dissolve → constant temperature of mother liquor → intensification separately, then at this temperature, proceed again the operation of next stage, in process, mother liquor divides the inferior quality of N to discharge, discharge step by step mother liquor, progressively improve the purity of phosphoric acid crystal.In last tower, last crystal is product, and heating makes crystal melting, and collects.The crystallizer complex structure of this invention, inconvenient operation, shortcoming high, that efficiency is not high consumes energy.
Summary of the invention
The purpose of this utility model is the deficiency for existing phosphoric acid crystallizer, a kind of crystalline rate that can improve phosphoric acid is provided, reduce energy consumption, can obtain the electron-level phosphoric acid product of multiple pureness specifications to meet the different demands in market simultaneously, create the electron-level phosphoric acid infrared heating crystallization apparatus of good economic benefit.
To achieve these goals, the utility model has adopted following technical scheme:
An electron-level phosphoric acid infrared heating crystallization apparatus, comprises crystallizer, goes out sour pump, acid-regulating tank and recycle pump, it is characterized in that: described crystallizer includes crystallization case, U-shaped crystallizer, washes brilliant device, pipe connecting, infrared heater and stiffening ring; Described crystallizer is also provided with crystal seed input port, acid mouth, cold medium inlet and cold media outlet; The acid mouth of described crystallizer by valve with go out sour pump and be connected; The top of described acid-regulating tank and top are provided with opening for feed, water-in, venting port and recycle acid import, and the bottom of acid-regulating tank is provided with recycle acid outlet and phosphoric acid product outlet; Described phosphoric acid product outlet connects products pot; The outlet of described recycle acid import and recycle acid is connected with recycle acid valve by recycle pump with acid-proof pipe, described recycle pump also with wash brilliant device and be connected; The described sour pump that goes out is connected with liquid discharge pipe with opening for feed respectively.
Above-described infrared heater mainly includes Infrared Heating fluorescent tube, power supply and glass bushing, and described Infrared Heating fluorescent tube is located in glass bushing; Described Infrared Heating fluorescent tube and glass bushing are uniformly distributed to cross and are located in crystallizer, and Infrared Heating fluorescent tube connects power supply.
Above-described U-shaped crystallizer uses pipe connecting connect rear parallel connection and/or be composed in series by several U-shaped pipes, is suspended in crystallizer.
Above-describedly wash brilliant device and comprise water inlet pipe, shower, the parallel U-shaped pipe top that is located at of shower, is evenly provided with spray header on shower; Described wash brilliant device by valve with go out sour pump and be connected.
Above-described shower is stainless steel tube.
Principle of work:
By adopting U-shaped pipe to add cold medium as crystallization carrier, xln is suspended on U-shaped pipe, at brilliant, liquid two, while being separated, can make the liquid phase that foreign matter content is high thoroughly discharge.By arranging in crystallizer, wash brilliant device, the spray washing to crystal column surface and the remaining liquid phase of crystallizer tank, avoids the situation of liquid phase that foreign matter content is higher and the miscible quality product decline causing of pure crystal.Temperature while adopting infrared heating technology to guarantee heating and melting when molten brilliant in crystallizer can whole balanced rising, guaranteed the effect that sweating is purified on largely, thereby improved the purification efficiency of phosphoric acid crystallization.
The beneficial effects of the utility model:
1. the utility model is by adopting U-shaped pipe to add cold medium as making crystallization carrier, xln is suspended on U-shaped pipe, at brilliant, liquid two, while being separated, can make the liquid phase that foreign matter content is high thoroughly discharge, the crystalline substance, the liquid separation that have solved the existence of straight tube crystallization in the past thoroughly do not cause product quality not high, the problem that purification efficiency is lower.
2. the utility model arranges and washes brilliant device in crystallizer, and the spray washing to the remaining liquid phase of crystal column surface and crystallizer has been avoided the situation of liquid phase that foreign matter content is higher and the miscible quality product decline causing of pure crystal.
3. the utility model adopts the crystallization of infrared heating technology heating and melting, guarantees that temperature in crystallizer can whole balanced rising, has guaranteed the effect that sweating is purified on largely, thereby has improved the purification efficiency of phosphoric acid crystallization.
Accompanying drawing explanation
Accompanying drawing 1 is assembly structure schematic diagram of the present utility model;
Accompanying drawing 2 is the brilliant device schematic diagram of washing of the present utility model.
In figure, identify: 1. products pot, 2. acid-regulating tank, 3. recycle pump, 4. wash brilliant device, 5. crystallizer, 6. go out sour pump, 20. phosphoric acid product outlets, 21. opening for feeds, 22. water-ins, 23. venting ports, 24. recycle acid outlets, 25. recycle acid imports, 41. showers, 42. spray headers, 50. raw material acid entrances, 51. cold medium inlets, 52. pipe connectings, 53.U type pipe, 54. crystal seed input ports, 55. cold media outlets, 56. infrared heaters, 57. stiffening rings, 58. acid mouths, 60. liquid discharge pipes.
Embodiment
With reference to the accompanying drawings, embodiment of the present utility model is further described in detail.
Embodiment 1:
An electron-level phosphoric acid infrared heating crystallization apparatus, also includes infrared heater 56; Described crystallizer 5 includes crystallization case, U-shaped crystallizer, washes brilliant device 4, pipe connecting 52, infrared heater 56 and stiffening ring 57; Described U-shaped crystallizer composes in parallel after using pipe connecting 52 to connect by several U-shaped pipes 53, is suspended in crystallizer 5; Infrared heater 56 mainly includes Infrared Heating fluorescent tube, power supply and glass bushing, and Infrared Heating fluorescent tube is located in glass bushing, and Infrared Heating fluorescent tube and glass bushing transcrystallization device 5 are uniformly distributed, and Infrared Heating fluorescent tube connects power supply; Described crystallizer 5 is also provided with crystal seed input port 54, acid mouth 58, cold medium inlet 51 and cold media outlet 55; Wash brilliant device 4 and comprise water inlet pipe, shower 41 and spray pump, parallel U-shaped pipe 53 tops that are located at of shower 41, shower 41 is stainless steel tube, is evenly provided with spray header 42 on shower 41, wash brilliant device 4 by valve with go out sour pump 6 and be connected; U-shaped pipe 53, crystallization case are high strength glass material; The acid mouth 58 of described crystallizer 5 by valve with go out sour pump 6 and be connected; The top of described acid-regulating tank 2 and top are provided with opening for feed 21, water-in 22, venting port 23 and recycle acid import 25, and the bottom of acid-regulating tank 2 is provided with recycle acid outlet 24 and phosphoric acid product outlet 20; Described phosphoric acid product outlet 20 connects products pot 1; Described recycle acid import 25 and recycle acid outlet 24 use acid-proof pipes are connected with recycle acid valve by recycle pump 3, described recycle pump 3 also with wash brilliant device 4 and be connected; The described sour pump 6 that goes out is connected with liquid discharge pipe 60 with opening for feed 21 respectively.
Embodiment 2:
An electron-level phosphoric acid infrared heating crystallization apparatus, also includes infrared heater 56; Described crystallizer 5 includes crystallization case, U-shaped crystallizer, washes brilliant device 4, pipe connecting 52, infrared heater 56 and stiffening ring 57; Described U-shaped crystallizer is composed in series after using pipe connecting 52 to connect by several U-shaped pipes 53, is suspended in crystallizer 5; Infrared heater 56 mainly includes Infrared Heating fluorescent tube, power supply and glass bushing, and Infrared Heating fluorescent tube is located in glass bushing, and Infrared Heating fluorescent tube and glass bushing transcrystallization device 5 are uniformly distributed, and Infrared Heating fluorescent tube connects power supply; Described crystallizer 5 is also provided with crystal seed input port 54, acid mouth 58, cold medium inlet 51 and cold media outlet 55; Wash brilliant device 4 and comprise water inlet pipe, shower 41 and spray pump, parallel U-shaped pipe 53 tops that are located at of shower 41, shower 41 is stainless steel tube, is evenly provided with spray header 42 on shower 41, wash brilliant device 4 by valve with go out sour pump 6 and be connected; U-shaped pipe 53, crystallization case are high strength glass material; The acid mouth 58 of described crystallizer 5 by valve with go out sour pump 6 and be connected; The top of described acid-regulating tank 2 and top are provided with opening for feed 21, water-in 22, venting port 23 and recycle acid import 25, and the bottom of acid-regulating tank 2 is provided with recycle acid outlet 24 and phosphoric acid product outlet 20; Described phosphoric acid product outlet 20 connects products pot 1; Described recycle acid import 25 and recycle acid outlet 24 use acid-proof pipes are connected with recycle acid valve by recycle pump 3, described recycle pump 3 also with wash brilliant device 4 and be connected; The described sour pump 6 that goes out is connected with liquid discharge pipe 60 with opening for feed 21 respectively.
Embodiment 3:
An electron-level phosphoric acid infrared heating crystallization apparatus, also includes infrared heater 56; Described crystallizer 5 includes crystallization case, U-shaped crystallizer, washes brilliant device 4, pipe connecting 52, infrared heater 56 and stiffening ring 57; Described U-shaped crystallizer uses pipe connecting 52 connect rear parallel connection and be composed in series by several U-shaped pipes 53, is suspended in crystallizer 5; Infrared heater 56 mainly includes Infrared Heating fluorescent tube, power supply and glass bushing, and Infrared Heating fluorescent tube is located in glass bushing, and Infrared Heating fluorescent tube and glass bushing transcrystallization device 5 are uniformly distributed, and Infrared Heating fluorescent tube connects power supply; Described crystallizer 5 is also provided with crystal seed input port 54, acid mouth 58, cold medium inlet 51 and cold media outlet 55; Wash brilliant device 4 and comprise water inlet pipe, shower 41 and spray pump, parallel U-shaped pipe 53 tops that are located at of shower 41, shower 41 is stainless steel tube, is evenly provided with spray header 42 on shower 41, wash brilliant device 4 by valve with go out sour pump 6 and be connected; U-shaped pipe 53, crystallization case are high strength glass material; The acid mouth 58 of described crystallizer 5 by valve with go out sour pump 6 and be connected; The top of described acid-regulating tank 2 and top are provided with opening for feed 21, water-in 22, venting port 23 and recycle acid import 25, and the bottom of acid-regulating tank 2 is provided with recycle acid outlet 24 and phosphoric acid product outlet 20; Described phosphoric acid product outlet 20 connects products pot 1; Described recycle acid import 25 and recycle acid outlet 24 use acid-proof pipes are connected with recycle acid valve by recycle pump 3, described recycle pump 3 also with wash brilliant device 4 and be connected; The described sour pump 6 that goes out is connected with liquid discharge pipe 60 with opening for feed 21 respectively.
Above-described embodiment, is more preferably one of concrete mode of the present utility model, and the common variation that those skilled in the art carry out within the scope of technical solutions of the utility model and replacement all should be included in protection domain of the present utility model.
Claims (5)
1. an electron-level phosphoric acid infrared heating crystallization apparatus, comprise crystallizer (5), go out sour pump (6), acid-regulating tank (2) and recycle pump (3), it is characterized in that: described crystallizer (5) includes crystallization case, U-shaped crystallizer, washes brilliant device (4), pipe connecting (52), infrared heater (56) and stiffening ring (57); Described crystallizer (5) is also provided with crystal seed input port (54), acid mouth (58), cold medium inlet (51) and cold media outlet (55); The acid mouth (58) of described crystallizer (5) by valve with go out sour pump (6) and be connected; The top of described acid-regulating tank (2) and top are provided with opening for feed (21), water-in (22), venting port (23) and recycle acid import (25), and the bottom of acid-regulating tank (2) is provided with recycle acid outlet (24) and phosphoric acid product outlet (20); Described phosphoric acid product outlet (20) connects products pot (1); Described recycle acid import (25) and recycle acid outlet (24) is connected with recycle acid valve by recycle pump (3) with acid-proof pipe, described recycle pump (3) also with wash brilliant device (4) and be connected; The described sour pump (6) that goes out is connected with liquid discharge pipe (60) with opening for feed (21) respectively.
2. electron-level phosphoric acid infrared heating crystallization apparatus according to claim 1, is characterized in that: described infrared heater (56) mainly includes Infrared Heating fluorescent tube, power supply and glass bushing, and described Infrared Heating fluorescent tube is located in glass bushing; Described Infrared Heating fluorescent tube and glass bushing are uniformly distributed to cross and are located in crystallizer (5), and Infrared Heating fluorescent tube connects power supply.
3. electron-level phosphoric acid infrared heating crystallization apparatus according to claim 1, is characterized in that: described U-shaped crystallizer uses pipe connecting (52) connect rear parallel connection and/or be composed in series by several U-shaped pipes (53), is suspended in crystallizer (5).
4. electron-level phosphoric acid infrared heating crystallization apparatus according to claim 1, it is characterized in that: the described brilliant device (4) of washing comprises water inlet pipe and shower (41), parallel U-shaped pipe (53) top that is located at of shower (41), is evenly provided with spray header (42) on shower (41); Described wash brilliant device (4) by valve with go out sour pump (6) and be connected.
5. electron-level phosphoric acid infrared heating crystallization apparatus according to claim 4, is characterized in that: described shower (41) is stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320882495.6U CN203781849U (en) | 2013-12-30 | 2013-12-30 | Electronic grade phosphoric acid infrared heating crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320882495.6U CN203781849U (en) | 2013-12-30 | 2013-12-30 | Electronic grade phosphoric acid infrared heating crystallization device |
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| Publication Number | Publication Date |
|---|---|
| CN203781849U true CN203781849U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320882495.6U Withdrawn - After Issue CN203781849U (en) | 2013-12-30 | 2013-12-30 | Electronic grade phosphoric acid infrared heating crystallization device |
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| CN (1) | CN203781849U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754849A (en) * | 2013-12-30 | 2014-04-30 | 广西明利化工有限公司 | Electronic grade phosphoric acid infrared heating crystallizing device |
-
2013
- 2013-12-30 CN CN201320882495.6U patent/CN203781849U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754849A (en) * | 2013-12-30 | 2014-04-30 | 广西明利化工有限公司 | Electronic grade phosphoric acid infrared heating crystallizing device |
| CN103754849B (en) * | 2013-12-30 | 2015-09-16 | 广西明利化工有限公司 | A kind of electron-level phosphoric acid infrared heating crystallization apparatus |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20150916 |
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| RGAV | Abandon patent right to avoid regrant |