CN203048601U - Crystal ammonium phosphate cooling crystallization device - Google Patents
Crystal ammonium phosphate cooling crystallization device Download PDFInfo
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- CN203048601U CN203048601U CN 201320013786 CN201320013786U CN203048601U CN 203048601 U CN203048601 U CN 203048601U CN 201320013786 CN201320013786 CN 201320013786 CN 201320013786 U CN201320013786 U CN 201320013786U CN 203048601 U CN203048601 U CN 203048601U
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- ammonium phosphate
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- rotary shaft
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Abstract
The utility model discloses a crystal ammonium phosphate cooling crystallization device. The crystal ammonium phosphate cooling crystallization device comprises a motor, a crystal slurry slot and a material slurry circulating pump which is communicated with the crystal slurry slot, wherein the motor is arranged above the crystal slurry slot; the motor rotary shaft is arranged in the crystal slurry slot; a guide barrel is sleeved on the outer part of the motor rotary shaft; a rotary plate is fixed at the lower end of the motor rotary shaft; a hot air outlet is formed at the top end of the crystal slurry slot; and the rotary plate is a rotary plate with a hole or a filler layer with a hole. The crystal ammonium phosphate cooling crystallization device can be used for quickening up the low-temperature cooling process and thus greatly improving the yield of an ammonium phosphate plant by utilizing air as the cooling medium. The motor is used for driving the rotary plate to rotate at a high speed, so that the biggest resistance in a gas-liquid mass transfer heat transfer process is from gas-liquid contact surface dissociation by virtue of the high-speed rotation, and therefore, the heat exchange area is greatly increased and the low-temperature temperature difference heat transfer also can be quickly realized. The obtained ammonium phosphate product is fine and uniform in grain size and easy to dry.
Description
Technical field
The utility model belongs to the phosphorous chemical industry field of mechanical technique, relates to a kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling.
Background technology
At present, crystal phosphoric acid one ammonium on the market mainly contains two kinds of hot method crystal phosphoric acid one ammonium and wet method crystal phosphoric acid one ammoniums, hot method crystal phosphoric acid one ammonium is directly to be neutralized by high-purity phosphoric acid and liquefied ammonia or gas ammonium, mother liquor is through condensing crystal production, wet method crystal phosphoric acid one ammonium mainly is that the gained phosphor ammonium slurry is through condensing crystal production by phosphoric acid by wet process process purification and liquefied ammonia or gas ammonia neutralization.All relate to phosphor ammonium slurry crystallisation by cooling workshop section therebetween, most of little factories adopt water-cooled or cooling air mode, when phosphor ammonium slurry is cooled to certain temperature, by filtration or other equipment for separating liquid from solid phosphorus ammonium crystal is separated with mother liquor, make phosphorus ammonium crystal drying obtain desired product.Yet be the most consuming time at the slip cooling stages; especially to be lower than 60 ℃ of speed of cooling very slow for the phosphor ammonium slurry temperature; be under the heat-eliminating medium situation at 20 ℃ of water; probably need 3～5h just can be cooled to 30 ℃; because cooling time is very long to cause the monoammonium phosphate crystal very easily chap is big, even there is mass crystallization one ammonium to be attached to not easy to clean of stirring rake and heat-exchange equipment surface.
For solving very long problem of phosphor ammonium slurry crystallisation by cooling time, the phosphor ammonium slurry Study on Crystallization is of long duration, and various crystallizers emerge in an endless stream, but most of complex structure costs are higher.The device of realizing the quick crystallisation by cooling process of phosphor ammonium slurry at present mostly is to adopt Oslo crystallizer and draft tube baffle crystallizer, and these two kinds of crystallizers mainly are by adopting the flash distillation mode to replace crystallisation by cooling.Oslo crystallizer type evaporative crystallizer claims Krystal crystallizer again, is a kind of Recycling Mother Solution continuous crystallizer.The feed liquid of operation is added in the circulation tube, mixes with pipe internal recycle mother liquor, by being pumped to heating chamber.Solution after the heating evaporates in evaporator room and reaches supersaturation, enters the crystal fluidized-bed of evaporator room below through pipe core.In the crystal fluidized-bed, oversaturated solute is deposited in the suspended particle surface in the solution, and crystal is grown up.The crystal fluidized-bed carries out hydraulic classification to particle.Macrobead is following, and small-particle draws off granularity crystalline product comparatively uniformly last from the fluidized-bed bottom.Fine particle in the fluidized-bed flows into circulation tube with mother liquor, the molten small crystal that goes wherein when reheating.If replace the heating chamber of Oslo evaporative crystallizer and remove evaporator room etc. with cooling room, then constitute oslo cooler crystallizer.The main drawback of this equipment is that solute easily is deposited on the heating surface, and operation is trouble, thereby uses not extensive.DTB type crystallizer belongs to typical internal circulation crystallizer for crystal slurry, owing at crystallizer inner draft tube is set, formed circulation passage, make magma have the good mixing condition, only need very low pressure head, just can make and realize good internal recycle in the crystallizer, make the degree that to reach capacity on each flow section in the crystallizer, can make the degree of supersaturation of solution be in lower level, be specially adapted to the steeper product of solubility curve.
In sum, no matter be draft tube baffle crystallizer or Oslo crystallizer, all only suitable large-lot producer with good operator uses, and their complex structures need a large amount of auxiliary facilities simultaneously, and its cost can account for whole investment more than three one-tenth for general medium and small sized enterprises.And, very easily lump and stop up reacting pipe especially for by the Wet-process Phosphoric Acid Production slip for phosphor ammonium slurry.The most employing of therefore domestic present stage minicrystal ammonium phosphate plant is produced through the crystallisation by cooling mode after the phosphor ammonium slurry heating is concentrated into certain weight proportion, and operating method is intermittent operation.Crystallisation by cooling workshop section mainly adopts naturally cooling or water-cooling pattern, process of cooling is very long, because general concentration section is concentrated into high specific weight with phosphor ammonium slurry, a large amount of crystal produce, it is uneven that crystallite size very easily appears in product, crystal is attached to stirring rake or crystallizer, causes output to be had a strong impact on.
The utility model content
For addressing the above problem, the utility model provides a kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling.Adopt air as heat-eliminating medium, make the speed-raising of subcooling process, improved ammonium phosphate plant output greatly.
The utility model is achieved by following technical solution.
A kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling, the material that comprises electric motor, magma groove and be communicated with the magma groove is with recycle pump, and described electric motor mounting is above the magma groove, and motor rotary shaft places in the magma groove, the motor rotary shaft outer cover is equipped with guide shell, and fixedly there is rotating disk the lower end.
Described magma groove top is provided with hot air outlet.
Described rotating disk is rotating disk with holes or packing layer with holes.
The beneficial effects of the utility model are:
Compared with prior art, the utility model adopts air as heat-eliminating medium, makes the speed-raising of subcooling process, greatly improves ammonium phosphate plant output.Adopt motor drives rotating disk high speed rotating, make gas-liquid mass transfer heat transfer process maximum resistance derive from the disassociation of gas-to-liquid contact face by high speed rotating, increased heat interchanging area greatly, the low temperature different transfer of heat also can be realized fast, and resulting ammonium phosphate product, particle is tiny evenly, is easy to drying.
Description of drawings
Fig. 1 is the structural representation of the utility model crystal phosphoric acid one ammonium equipment of crystallisation by cooling.
Among the figure: the 1-electric motor, the 2-motor rotary shaft, the 3-guide shell, the 4-rotating disk, 5-expects recycle pump, 6-magma, 7-airflow, 8-magma groove, 9-hot air outlet.
Embodiment
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but that claimed scope is not limited to is described.
As shown in Figure 1, a kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling described in the utility model, the material that comprises electric motor 1, magma groove 8 and be communicated with magma groove 8 is with recycle pump 5, described electric motor 1 is installed in magma groove 8 tops, motor rotary shaft 2 places in the magma groove 8, motor rotary shaft 2 outer cover are equipped with guide shell 3, and fixedly there is rotating disk 4 lower end.
Described magma groove 8 tops are provided with hot air outlet 9.
Described rotating disk 4 is rotating disk with holes or packing layer with holes.
The utility model in use, at first will be cooled to 60～70 ℃ of phosphor ammonium slurries by slurry circulation pump 5, squeeze into guide shell 3, the phosphorus ammonium enters guide shell 3 back and enters rotating disk 4 in the high speed rotating at action of gravity lower edge motor rotary shaft 2, rotating disk 4 can be rotating disk with holes, also can be packing layer with holes, phosphor ammonium slurry be in rotating disk with holes or packing layer with holes.Because action of centrifugal force is broken the slip upper layer, slip presents vaporific, very easily scatter, and carries out heat exchange with bubbling air stream 7.Because be to adopt the normal temperature air heat transfer temperature difference less, driving force of heat transfer is poor, but vaporific phosphor ammonium slurry has very big heat interchanging area, still can realize very fast cooling rate.Phosphor ammonium slurry after the cooling contains a large amount of unstable nucleus, and magma groove 8 bottoms are the growing the grain groove, and when temperature arrival processing requirement, blanking obtains industrial monoammonium phosphate magma 6, and obtaining crystal diameter after the centrifuging drying is about 0.8mm, and the product size evenly.
Claims (3)
1. crystal phosphoric acid one ammonium equipment of crystallisation by cooling, the material that comprises electric motor (1), magma groove (8) and be communicated with magma groove (8) is with recycle pump (5), it is characterized in that: described electric motor (1) is installed in magma groove (8) top, motor rotary shaft (2) places in the magma groove (8), motor rotary shaft (2) outer cover is equipped with guide shell (3), and fixedly there is rotating disk (4) lower end.
2. a kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling according to claim 1, it is characterized in that: described magma groove (8) top is provided with hot air outlet (9).
3. a kind of crystal phosphoric acid one ammonium equipment of crystallisation by cooling according to claim 1, it is characterized in that: described rotating disk (4) is rotating disk with holes or packing layer with holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013786 CN203048601U (en) | 2013-01-10 | 2013-01-10 | Crystal ammonium phosphate cooling crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320013786 CN203048601U (en) | 2013-01-10 | 2013-01-10 | Crystal ammonium phosphate cooling crystallization device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203048601U true CN203048601U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320013786 Expired - Fee Related CN203048601U (en) | 2013-01-10 | 2013-01-10 | Crystal ammonium phosphate cooling crystallization device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203048601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276834A (en) * | 2016-08-05 | 2017-01-04 | 常熟市圆启晶体材料有限公司 | The stirring means of potassium dihydrogen phosphate crystallisation by cooling |
| CN114195316A (en) * | 2021-12-31 | 2022-03-18 | 中化(浙江)膜产业发展有限公司 | Iron phosphate wastewater treatment system and treatment method |
-
2013
- 2013-01-10 CN CN 201320013786 patent/CN203048601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106276834A (en) * | 2016-08-05 | 2017-01-04 | 常熟市圆启晶体材料有限公司 | The stirring means of potassium dihydrogen phosphate crystallisation by cooling |
| CN114195316A (en) * | 2021-12-31 | 2022-03-18 | 中化(浙江)膜产业发展有限公司 | Iron phosphate wastewater treatment system and treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUIYANG ZHONGHUA KAILIN FERTILIZER CO., LTD. Free format text: FORMER OWNER: KAILIN (GROUP) CO., LTD., GUIZHOU Effective date: 20130927 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 550002 GUIYANG, GUIZHOU PROVINCE TO: 551109 GUIYANG, GUIZHOU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130927 Address after: Xifeng County in Guizhou Province, Guiyang city town 551109 Patentee after: Zhonghuakai Phosphorous Chemical Fertilizer Co., Ltd., Guiyang Address before: 550002 Guizhou city in Guiyang Province, the Haitian Road No. 203 building 12 layer Patentee before: Guizhou Kailin (Group) Co.,Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: GUIZHOU KAILIN GROUP CO., LTD. Free format text: FORMER OWNER: GUIYANG ZHONGHUA KAILIN FERTILIZER CO., LTD. Effective date: 20150323 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 551109 GUIYANG, GUIZHOU PROVINCE TO: 550009 GUIYANG, GUIZHOU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150323 Address after: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Patentee after: Phosphorylcholine group limited-liability company is opened in Guizhou Address before: Xifeng County in Guizhou Province, Guiyang city town 551109 Patentee before: Zhonghuakai Phosphorous Chemical Fertilizer Co., Ltd., Guiyang |
|
| 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: 20130710 Termination date: 20190110 |