CN203307051U - Phosphoric acid concentration system - Google Patents
Phosphoric acid concentration system Download PDFInfo
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- CN203307051U CN203307051U CN2013204422840U CN201320442284U CN203307051U CN 203307051 U CN203307051 U CN 203307051U CN 2013204422840 U CN2013204422840 U CN 2013204422840U CN 201320442284 U CN201320442284 U CN 201320442284U CN 203307051 U CN203307051 U CN 203307051U
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- fluorine
- phosphoric acid
- resorber
- gas
- difluoro
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Abstract
The utility model provides a phosphoric acid concentration system which comprises a graphite heat exchanger, a flash chamber, a flash evaporation cyclone foam remover, a fluorine absorber I, a fluorine absorber II, a fluorine recovery cyclone foam remover, an atmospheric condenser and a return water tank connected in sequence, wherein after heat exchange is carried out on fluid by the graphite heat exchanger, the fluid is sent into the flash chamber and then is evaporated; gas obtained by evaporation in the flash chamber is sent into the flash evaporation cyclone foam remover and then is treated; after that, fluorine-containing gas sequentially passes through the fluorine absorber I and the fluorine absorber II so as to be subjected to fluorine absorption. According to the phosphoric acid concentration system, dilute phosphoric acid is indirectly heated in a vacuum state according to the principle that a dilute phosphoric acid solution has different boiling points under the different pressures, water is evaporated by boiling, and the phosphoric acid is concentrated, so that the phosphoric acid with high concentration can be obtained.
Description
Technical field
The utility model relates to a kind of Phosphoric Acid Concentration system.
Background technology
Phosphoric acid is a kind of readily avaiable fertilizer of high density, is applicable to various crops and soil, is specially adapted to like the crop that ammonium needs phosphorus, make base manure or topdress all can, should deep placement.Thereby be widely used industrial.
Due to the industrial application value of phosphoric acid, at present increasing producer starts to produce phosphoric acid to meet the need of market.Owing in phosphoric acid, containing some insoluble impurity, as silicate, carbonate etc., these impurity need to obtain effectively removing just can know high-quality phosphoric acid.
Phosphoric Acid Concentration system of the prior art, can not effectively absorb the HF in the vaporised gas in phosphoric acid and SiF4, thereby can not prepare the phosphoric acid of high density.
The utility model content
Therefore, the utility model provides a kind of Phosphoric Acid Concentration system that can prepare the phosphoric acid of high density.
The utility model is by the following technical solutions:
A kind of Phosphoric Acid Concentration system, comprise and connect successively graphite heat exchanger, flashing chamber, flash distillation whirlwind scum dredger, a fluorine resorber, difluoro resorber, fluorine recovery whirlwind scum dredger, barometric condenser and return flume, wherein, after described graphite heat exchanger convection cell carries out heat exchange, sending into described flashing chamber evaporates, gas after described flashing chamber evaporation is sent into described flash distillation whirlwind scum dredger and is processed, and the fluoro-gas after described flash distillation whirlwind scum dredger is processed is inhaled the fluorine processing through a described fluorine resorber and difluoro resorber successively.
Preferably, also comprise that the fluorine be connected with a described fluorine resorber absorbs sealing groove, the difluoro be connected with described difluoro resorber absorbs sealing groove, and the concentrated vacuum pump be connected with described barometric condenser.
Preferably,, also comprise the concentrated acid storage tank be connected with described flashing chamber.
Preferably, gas after inhaling fluorine and process by a described fluorine resorber and difluoro resorber circulate to absorb by fluorine silicic acid aqueous solution and generates qualified silicofluoric acid and be sent to described concentrated acid storage tank storage, a large amount of water vapors enter described fluorine recovery whirlwind scum dredger with residual fluoro-gas and again carry out gas-liquid separation, fluorine-containing liquid enters in described difluoro absorption tube sealing groove by lower liquid pipe, carry out fluorine and reclaim circulation, residue water vapor and a small amount of fluoro-gas enter described accumulator tank by described barometric condenser condensation, and noncondensable gas effluxes after described concentrated vacuum pump absorbs.
Preferably, also comprise the circulating water pool be connected with described return flume, and described circulating water pool is connected to described barometric condenser.
Preferably, in described flashing chamber, has forced circulation pump.Preferably, also comprise the concentrated vacuum pump be connected with described barometric condenser.
Phosphoric Acid Concentration system of the present utility model, by repeatedly after foam removal and defluorination, concentrating condensation, can access the phosphoric acid of high density, and simple in structure, can be recycled, economic and practical, is applicable in large-scale Phosphoric Acid Concentration technique.
The accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of Phosphoric Acid Concentration system of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is introduced.
Fig. 1 is the frame structure schematic diagram of Phosphoric Acid Concentration system of the present utility model.As shown in Figure 1, Phosphoric Acid Concentration system of the present utility model, comprise and connect successively graphite heat exchanger 1, flashing chamber 2, flash distillation whirlwind scum dredger 3, a fluorine resorber 4, difluoro resorber 5, fluorine recovery whirlwind scum dredger 6, barometric condenser 7 and return flume 8.
Wherein, graphite heat exchanger 1 is at concentration systems countercurrent heat-transfer of the present utility model, and it has high heat transfer coefficient.Low fouling, corrosion-resistant, wear-resistant and be enough to bear the physical strength because of unlikely damages such as mechanical cleaning tubulation, shipments, thereby play an important role in Phosphoric Acid Concentration system of the present utility model.3 pairs of flashing chambers 2 of flash distillation whirlwind scum dredger out fluoro-gas carry out gas-liquid separation, reclaim the phosphorus in mixed gas, improve simultaneously the quality of silicofluoric acid.One fluorine resorber 4 and difluoro resorber 5 HF and the SiF4 for absorbing vaporised gas.
In order to prevent the fluorine absorbed effusion, preferred, Phosphoric Acid Concentration system of the present utility model also comprises that the fluorine be connected with a described fluorine resorber 4 for sealing absorbs sealing groove 10, and the difluoro be connected with described difluoro resorber 5 absorbs sealing groove 9.
In addition, Phosphoric Acid Concentration of the present utility model also comprises be used to storing the concentrated acid storage tank 11 be connected with described flashing chamber 2 of strong phosphoric acid.And for the circulating water pool 12 be connected with described return flume 8 of water cycle, and described circulating water pool 12 is connected to described barometric condenser 7.
In order to make the phosphoric acid more uniform temperature in system, in described flashing chamber 8, has the forced circulation pump (not shown) of low lift high flow capacity propeller pump.
In addition, Phosphoric Acid Concentration system of the present utility model also comprises the concentrated vacuum pump 13 be connected with described barometric condenser, is used to form certain vacuum, gives the concentrated pressure reduction that vapor-liquid separation is provided, and certain pressure reduction is provided and non-condensable gas is discharged for the concentrated gas condensation.
The principle of work of Phosphoric Acid Concentration system of the present utility model is: will be from the dilute phosphoric acid of dilute phosphoric acid clarifying tank and low-pressure steam after graphite heat exchanger 1 carries out heat exchange, forced circulation pump circulation in evaporator room 2, it is rear for diammonium phosphate (DAP) that after vacuum-evaporation, the qualified strong phosphoric acid of generation is sent to 11 clarifications of concentrated acid storage tank.
The gas that leaves evaporator room 2 carries out gas-liquid separation by flash distillation whirlwind scum dredger 3, liquid circulates again by the lower liquid pipe system that enters, the fluoro-gas of overflowing passes through successively, one fluorine resorber 4, difluoro resorber 5, by fluorine silicic acid aqueous solution, circulate and absorb to generate qualified silicofluoric acid and be sent to the silicofluoric acid groove and store, a large amount of water vapors enter fluorine recovery whirlwind scum dredger 6 with residual fluoro-gas and again carry out gas-liquid separation, fluorine-containing liquid enters difluoro absorption tube sealing groove 9 and a fluorine absorption tube sealing groove 10 by lower liquid pipe, carry out fluorine and reclaim circulation, residue water vapor and a small amount of fluoro-gas enter accumulator tank 8 by barometric condenser 7 condensations, then enter into circulating water pool 12 to get back to barometric condenser 7, carry out water cycle, noncondensable gas effluxes after concentrated vacuum pump 13 absorbs.
The phlegma that after heat exchange, the steam of condensation forms enters condensate receiver (not shown), squeezes into respectively and pollutes hot well (not shown), peace and quiet hot well (not shown) or enter trench by specific conductivity and pH value analysis.
To sum up, Phosphoric Acid Concentration system of the present utility model, by the repeatedly recycling of the fluorine in phosphoric acid, can concentrate out the phosphoric acid of high density.
Phosphoric Acid Concentration system of the present utility model, by repeatedly after foam removal and defluorination, concentrating condensation, can access the phosphoric acid of high density, and simple in structure, can be recycled, economic and practical, is applicable in large-scale Phosphoric Acid Concentration technique.
Finally it should be noted that: above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (4)
1. Phosphoric Acid Concentration system, it is characterized in that, comprise and connect successively graphite heat exchanger, flashing chamber, flash distillation whirlwind scum dredger, one fluorine resorber, the difluoro resorber, fluorine reclaims the whirlwind scum dredger, barometric condenser and return flume, wherein, after described graphite heat exchanger convection cell carries out heat exchange, sending into described flashing chamber evaporates, gas after described flashing chamber evaporation is sent into described flash distillation whirlwind scum dredger and is processed, fluoro-gas after described flash distillation whirlwind scum dredger is processed is inhaled the fluorine processing through a described fluorine resorber and difluoro resorber successively,
Wherein, in described flashing chamber, has forced circulation pump.
2. Phosphoric Acid Concentration system according to claim 1, it is characterized in that, also comprise that the fluorine be connected with a described fluorine resorber absorbs sealing groove, the difluoro be connected with described difluoro resorber absorbs sealing groove, and the concentrated vacuum pump be connected with described barometric condenser.
3. Phosphoric Acid Concentration system according to claim 2, is characterized in that, also comprises the concentrated acid storage tank be connected with described flashing chamber.
4. Phosphoric Acid Concentration system according to claim 3, it is characterized in that, gas after inhaling fluorine and process by a described fluorine resorber and difluoro resorber circulate to absorb by fluorine silicic acid aqueous solution and generates qualified silicofluoric acid and be sent to described concentrated acid storage tank storage, a large amount of water vapors enter described fluorine recovery whirlwind scum dredger with residual fluoro-gas and again carry out gas-liquid separation, fluorine-containing liquid enters in described difluoro absorption tube sealing groove by lower liquid pipe, carry out fluorine and reclaim circulation, residue water vapor and a small amount of fluoro-gas enter described accumulator tank by described barometric condenser condensation, noncondensable gas effluxes after described concentrated vacuum pump absorbs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204422840U CN203307051U (en) | 2013-07-22 | 2013-07-22 | Phosphoric acid concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204422840U CN203307051U (en) | 2013-07-22 | 2013-07-22 | Phosphoric acid concentration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203307051U true CN203307051U (en) | 2013-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204422840U Expired - Fee Related CN203307051U (en) | 2013-07-22 | 2013-07-22 | Phosphoric acid concentration system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203307051U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293460A (en) * | 2015-11-18 | 2016-02-03 | 贵州开磷集团股份有限公司 | Energy source recovery system for ammonium phosphate production |
| CN105668535A (en) * | 2015-12-31 | 2016-06-15 | 贵州开磷集团股份有限公司 | Concentration method and concentration apparatus for wet method phosphorus acid |
| CN108726494A (en) * | 2017-04-20 | 2018-11-02 | 艺康美国股份有限公司 | Dirt control in phosphoric acid production and processing equipment |
-
2013
- 2013-07-22 CN CN2013204422840U patent/CN203307051U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293460A (en) * | 2015-11-18 | 2016-02-03 | 贵州开磷集团股份有限公司 | Energy source recovery system for ammonium phosphate production |
| CN105668535A (en) * | 2015-12-31 | 2016-06-15 | 贵州开磷集团股份有限公司 | Concentration method and concentration apparatus for wet method phosphorus acid |
| CN108726494A (en) * | 2017-04-20 | 2018-11-02 | 艺康美国股份有限公司 | Dirt control in phosphoric acid production and processing equipment |
| CN108726494B (en) * | 2017-04-20 | 2023-05-02 | 艺康美国股份有限公司 | Scale control in phosphoric acid production and treatment plants |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Hubei Yihua Songzi financial industry limited company Document name: Notification of Approving Refund |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131127 Termination date: 20180722 |