CN103694143A - Device for continuously producing urea phosphate from wet-process phosphoric acid - Google Patents
Device for continuously producing urea phosphate from wet-process phosphoric acid Download PDFInfo
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- CN103694143A CN103694143A CN201310726346.5A CN201310726346A CN103694143A CN 103694143 A CN103694143 A CN 103694143A CN 201310726346 A CN201310726346 A CN 201310726346A CN 103694143 A CN103694143 A CN 103694143A
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Abstract
The invention discloses a device for continuously producing urea phosphate from wet-process phosphoric acid, and belongs to the technical field of chemical production. The device comprises a wet-process phosphoric acid storage tank, a phosphoric acid supply pump, a centrifugal machine, a synthesis tank, a raw material bin, a slurry pump, a cooling crystallization device, a circulating water cooling system, a crystal slurry buffer tank, a finished product centrifugal machine, a mother liquid tank and a drying machine. According to the device, the continuous discharging operation is performed through the cooling crystallization device, so that the effects of increasing the automation degree and the production level, reducing operators and the labor intensity and improving the production efficiency are achieved; the circulating water cooling system is adopted for cooling, so that the heat exchange amount is large, the cooling effect is good, the working environment is greatly improved, and the cooling water treatment cost is reduced.
Description
Technical field
The invention belongs to Chemicals production technical field, relate to a kind of production unit, specifically relate to the device that a kind of phosphoric acid by wet process is produced Ureaphil continuously.
Background technology
Ureaphil contains nitrogen, two kinds of nutritive elements of phosphorus, is the compound nitrogen phosphate fertilizer of high density, also can be used as ignition dope, metal conditioner, Nutrious fermented dose, clean-out system and purifying phosphoric acid used additives, in addition, is commonly used for the fodder additives of ruminating animal.The synthesis technique of Ureaphil is mainly thermal phosphoric acid method by phosphate raw material used, at present more to the academic report of using the synthesis condition of thermal phosphoric acid or wet process phosphoric acid for preparing Ureaphil to study, but its main method is the TVA technique etc. that comes from the secondary crystallization process of USSR (Union of Soviet Socialist Republics), urea, polyphosphoric acid technique and come from the U.S..Through the development of nearly decades, as the most basic technique---thermal phosphoric acid and urea reaction, in suitability for industrialized production, obtained a lot of invaluable experiences, still, consult the phosphorous chemical industry periodical information after nineteen ninety, almost there is no the report of its industrialization technology.Because its technical process is simple, therefore most enterprises is all oneself to design and develop, there is no to form fixing and complete production unit, in actual production process, many practical problemss are considered not enough, cause respectively installing running condition and directly the unimpeded of whole technical process are impacted.The production equipment of current Ureaphil belongs to intermittent operation mostly, has some defects in production process, adopts interchanger direct heat exchange cooling during crystallisation by cooling in process of production, the heat interchanging area of interchanger is limited, the cooling time needing is long, and cooling water amount is large, is difficult to process; Because cooling time is long and batch operation, cause throughput little, production capacity is difficult to improve; The level of automation of device is low, and the operator that need are many, and labour intensity is large, causes human resources waste, and cost of labor increases; Equipment of crystallisation by cooling adopts open type operation, and quantity of steam is large, and operating environment is poor.
Summary of the invention
In order to address the above problem, to the invention provides the device that a kind of phosphoric acid by wet process is produced Ureaphil continuously, thereby reach the effect that continuous high-efficient is produced.
The present invention is achieved by following technical solution.
A kind of phosphoric acid by wet process is produced the device of Ureaphil continuously, comprise phosphoric acid by wet process storage tank, phosphoric acid is for sour pump, whizzer, synthetic groove, raw material cabin, shurry pump, equipment of crystallisation by cooling, circulating water cooling system, magma dashpot, finished product whizzer, mother liquor tank and drying machine, the outlet of described phosphoric acid by wet process storage tank is communicated with the import of phosphoric acid for sour pump, described phosphoric acid is communicated with the material inlet of whizzer for sour pump outlet, the liquid phase discharge port of described whizzer is communicated with the liquid phase feeding mouth of synthetic groove, the solid phase opening for feed at described synthetic groove top is communicated with raw material cabin by hopper and measuring belt, the synthetic discharge port of trench bottom and the import of shurry pump are communicated with, slip pump outlet is communicated with equipment of crystallisation by cooling, described equipment of crystallisation by cooling is communicated with circulating water cooling system, the opening for feed of described finished product whizzer is communicated with the discharge port of magma dashpot hypomere, described magma dashpot is communicated with equipment of crystallisation by cooling, the solid phase exit of finished product whizzer is connected with the opening for feed of drying machine by conveying belt, the liquid-phase outlet of finished product whizzer is communicated with the opening for feed of mother liquor tank.
Described equipment of crystallisation by cooling comprises recycle pump, interchanger, flashing chamber and Oslo crystallizer, the outlet conduit of opening for feed binder stock pump of described recycle pump and the liquid-phase outlet of Oslo crystallizer epimere, circulation pump outlet is communicated with the import of interchanger, the outlet of described interchanger is communicated with the circulation fluid import on flashing chamber, the tremie pipe of described flashing chamber bottom is communicated with Oslo crystallizer, and inserts the bottom of Oslo crystallizer.
Described circulating water cooling system comprises barometric condenser, water cooling tower, circulating water channel and water circulating pump, the gas phase import of described barometric condenser hypomere is communicated with the gaseous phase outlet of flashing chamber, the liquid-phase outlet pipe of bottom is communicated with the liquid phase import at circulating water channel top, the water outlet of described circulating water channel hypomere is communicated with the water-in of water circulating pump, described recirculated water pump outlet is communicated with water cooling tower epimere entrance, and the water outlet of water cooling tower hypomere is communicated with the water-in of barometric condenser epimere.
Described Oslo crystallizer hypomere and bottom have magma outlet, and outlet is communicated with the opening for feed at magma dashpot top.
The invention has the beneficial effects as follows:
A kind of phosphoric acid by wet process of the present invention is produced the device of Ureaphil continuously, by equipment of crystallisation by cooling continuous discharge, reached raising level of automation and throughput, reduce operator, reduce labour intensity, thereby the effect of enhancing productivity, meanwhile, it is cooling that the technical program employing circulating water cooling system carries out vacuum cool-down, heat is large, good cooling results, operating environment is greatly improved, and has reduced cooling water amount and has shortened cooling time.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1-phosphoric acid by wet process storage tank, 2-phosphoric acid supplies sour pump, 3-whizzer, 4-synthesizes groove, 5-raw material cabin, 6-shurry pump, 7-equipment of crystallisation by cooling, 71-recycle pump, 72 interchanger, 73-flashing chamber, 74-Oslo crystallizer, 8-circulating water cooling system, 81-barometric condenser, 82-water cooling tower, 83-circulating water channel, 84-water circulating pump, 9-magma dashpot, 10-finished product whizzer, 11-mother liquor tank, 12-drying machine.
Embodiment
Below in conjunction with accompanying drawing, further describe technical scheme of the present invention, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of phosphoric acid by wet process of the present invention is produced the device of Ureaphil continuously, comprise phosphoric acid by wet process storage tank 1, phosphoric acid is for sour pump 2, whizzer 3, synthetic groove 4, raw material cabin 5, shurry pump 6, equipment of crystallisation by cooling 7, circulating water cooling system 8, magma dashpot 9, finished product whizzer 10, mother liquor tank 11 and drying machine 12, the outlet of described phosphoric acid by wet process storage tank 1 is communicated with the import of phosphoric acid for sour pump 2, described phosphoric acid is communicated with the material inlet of whizzer 3 for the outlet of sour pump 2, the liquid phase discharge port of described whizzer 3 is communicated with the liquid phase feeding mouth of synthetic groove 4, the solid phase opening for feed at described synthetic groove 4 tops is communicated with raw material cabin 5 by hopper and measuring belt, the discharge port of synthetic groove 4 bottoms is communicated with the import of shurry pump 6, the outlet of shurry pump 6 is communicated with equipment of crystallisation by cooling 7, described equipment of crystallisation by cooling 7 is communicated with circulating water cooling system 8, the opening for feed of described finished product whizzer 10 is communicated with the discharge port of magma dashpot 9 hypomeres, described magma dashpot 9 is communicated with equipment of crystallisation by cooling 7, the solid phase exit of finished product whizzer 10 is connected with the opening for feed of drying machine 12 by conveying belt, the liquid-phase outlet of finished product whizzer 10 is communicated with the opening for feed of mother liquor tank 11.
Described equipment of crystallisation by cooling 7 comprises recycle pump 71, interchanger 72, flashing chamber 73 and Oslo crystallizer 74, the outlet conduit of the opening for feed binder stock pump 6 of described recycle pump 71 and the liquid-phase outlet of Oslo crystallizer 74 epimeres, the outlet of recycle pump 71 is communicated with the import of interchanger 72, the outlet of described interchanger 72 is communicated with the circulation fluid import on flashing chamber 73, the tremie pipe of described flashing chamber 73 bottoms is communicated with Oslo crystallizer 74, and inserts the bottom of Oslo crystallizer 74.
Described circulating water cooling system 8 comprises barometric condenser 81, water cooling tower 82, circulating water channel 83 and water circulating pump 84, the gas phase import of described barometric condenser 81 hypomeres is communicated with the gaseous phase outlet of flashing chamber 73, the liquid-phase outlet pipe of bottom is communicated with the liquid phase import at circulating water channel 83 tops, the water outlet of described circulating water channel 83 hypomeres is communicated with the water-in of water circulating pump 84, the outlet of described water circulating pump 84 is communicated with water cooling tower 82 epimere entrances, and the water outlet of water cooling tower 82 hypomeres is communicated with the water-in of barometric condenser 81 epimeres.
Described Oslo crystallizer 74 hypomeres and bottom have magma outlet, and outlet is communicated with the opening for feed at magma dashpot 9 tops.
Start phosphoric acid for sour pump 2, phosphoric acid in phosphoric acid by wet process storage tank 1 is sent in whizzer 3, by after solid impurity separation in phosphoric acid, phosphoric acid enters in synthetic groove 4 by the liquid phase discharge port of whizzer 3 bottoms, the urea of metering was synthesized groove 4 from adding of raw material cabin 5, and in synthetic groove 4 abundant stirring and dissolving, after mixing, by shurry pump 6, the mixed slurry in synthetic groove 4 is sent into the inlet pipeline of recycle pump 71, slip is transported in flashing chamber 73 by recycle pump 71 routed through heat exchanger 72, under the effect of circulating water cooling system 8, slip in flashing chamber 73 is separated out Ureaphil crystal, tremie pipe through flashing chamber 73 bottoms enters the bottom of Oslo crystallizer 74, crystal enters in magma dashpot 9 through the magma outlet of Oslo crystallizer 74 bottoms, finally enter the interior centrifugation of finished product whizzer 10, solid phase is packed to obtain Ureaphil finished product after entering drying machine 12 inner dryings by conveying belt, liquid phase enters in mother liquor tank 11, finally deliver to compound fertilizer facility production composite fertilizer.
Claims (4)
1. a phosphoric acid by wet process is produced the device of Ureaphil continuously, comprise phosphoric acid by wet process storage tank (1), phosphoric acid is for sour pump (2), whizzer (3), synthetic groove (4), raw material cabin (5), shurry pump (6), equipment of crystallisation by cooling (7), circulating water cooling system (8), magma dashpot (9), finished product whizzer (10), mother liquor tank (11) and drying machine (12), it is characterized in that: the outlet of described phosphoric acid by wet process storage tank (1) is communicated with the import of phosphoric acid for sour pump (2), described phosphoric acid is communicated with the material inlet of whizzer (3) for the outlet of sour pump (2), the liquid phase discharge port of described whizzer (3) is communicated with the liquid phase feeding mouth of synthetic groove (4), the solid phase opening for feed at described synthetic groove (4) top is communicated with raw material cabin (5) by hopper and measuring belt, the discharge port of synthetic groove (4) bottom is communicated with the import of shurry pump (6), the outlet of shurry pump (6) is communicated with equipment of crystallisation by cooling (7), described equipment of crystallisation by cooling (7) is communicated with circulating water cooling system (8), the opening for feed of described finished product whizzer (10) is communicated with the discharge port of magma dashpot (9) hypomere, described magma dashpot (9) is communicated with equipment of crystallisation by cooling (7), the solid phase exit of finished product whizzer (10) is connected with the opening for feed of drying machine (12) by conveying belt, the liquid-phase outlet of finished product whizzer (10) is communicated with the opening for feed of mother liquor tank (11).
2. a kind of phosphoric acid by wet process according to claim 1 is produced the device of Ureaphil continuously, it is characterized in that: described equipment of crystallisation by cooling (7) comprises recycle pump (71), interchanger (72), flashing chamber (73) and Oslo crystallizer (74), the liquid-phase outlet of the outlet conduit of the opening for feed binder stock pump (6) of described recycle pump (71) and Oslo crystallizer (74) epimere, the outlet of recycle pump (71) is communicated with the import of interchanger (72), the outlet of described interchanger (72) is communicated with the circulation fluid import on flashing chamber (73), the tremie pipe of described flashing chamber (73) bottom is communicated with Oslo crystallizer (74), and insert the bottom of Oslo crystallizer (74).
3. a kind of phosphoric acid by wet process according to claim 1 is produced the device of Ureaphil continuously, it is characterized in that: described circulating water cooling system (8) comprises barometric condenser (81), water cooling tower (82), circulating water channel (83) and water circulating pump (84), the gas phase import of described barometric condenser (81) hypomere is communicated with the gaseous phase outlet of flashing chamber (73), the liquid-phase outlet pipe of bottom is communicated with the liquid phase import at circulating water channel (83) top, the water outlet of described circulating water channel (83) hypomere is communicated with the water-in of water circulating pump (84), the outlet of described water circulating pump (84) is communicated with water cooling tower (82) epimere entrance, the water outlet of water cooling tower (82) hypomere is communicated with the water-in of barometric condenser (81) epimere.
4. a kind of phosphoric acid by wet process according to claim 1 is produced the device of Ureaphil continuously, it is characterized in that: described Oslo crystallizer (74) hypomere and bottom have magma outlet, and outlet is communicated with the opening for feed at magma dashpot (9) top.
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| CN201310726346.5A CN103694143B (en) | 2013-12-25 | 2013-12-25 | A kind of phosphoric acid by wet process produces the device of urea phosphate continuously |
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| CN201310726346.5A CN103694143B (en) | 2013-12-25 | 2013-12-25 | A kind of phosphoric acid by wet process produces the device of urea phosphate continuously |
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| CN103694143B CN103694143B (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715490A (en) * | 2017-09-19 | 2018-02-23 | 云南云天化股份有限公司 | A kind of liquid foam separation method suitable for phosphoric acid by wet process low level flash cooled system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1440056A (en) * | 1921-06-28 | 1922-12-26 | Clarkson Fuller | Method of making urea phosphate |
| GB1149924A (en) * | 1966-11-02 | 1969-04-23 | Power Gas Ltd | Improvements in or relating to the production of urea phosphate |
| DE1912125A1 (en) * | 1968-03-11 | 1969-10-09 | Power Gas Ltd | Process for the continuous production of urea phosphate |
| CN101318914A (en) * | 2008-07-23 | 2008-12-10 | 瓮福（集团）有限责任公司 | Method for preparing urea phosphoric acid with wet-process phosphoric acid |
| CN102040544A (en) * | 2010-11-15 | 2011-05-04 | 中化重庆涪陵化工有限公司 | Method for continuously producing feed grade urea phosphate by using wet purified phosphoric acid |
| CN102391155A (en) * | 2011-10-25 | 2012-03-28 | 贵州川恒化工有限责任公司 | Urea phosphate production method |
-
2013
- 2013-12-25 CN CN201310726346.5A patent/CN103694143B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1440056A (en) * | 1921-06-28 | 1922-12-26 | Clarkson Fuller | Method of making urea phosphate |
| GB1149924A (en) * | 1966-11-02 | 1969-04-23 | Power Gas Ltd | Improvements in or relating to the production of urea phosphate |
| DE1912125A1 (en) * | 1968-03-11 | 1969-10-09 | Power Gas Ltd | Process for the continuous production of urea phosphate |
| GB1208632A (en) * | 1968-03-11 | 1970-10-14 | Power Gas Ltd | Improvements in or relating to the production of urea phosphate |
| CN101318914A (en) * | 2008-07-23 | 2008-12-10 | 瓮福（集团）有限责任公司 | Method for preparing urea phosphoric acid with wet-process phosphoric acid |
| CN102040544A (en) * | 2010-11-15 | 2011-05-04 | 中化重庆涪陵化工有限公司 | Method for continuously producing feed grade urea phosphate by using wet purified phosphoric acid |
| CN102391155A (en) * | 2011-10-25 | 2012-03-28 | 贵州川恒化工有限责任公司 | Urea phosphate production method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106734064A (en) * | 2016-11-29 | 2017-05-31 | 贵阳开磷化肥有限公司 | The ardealite innocent processing unit and its method of a kind of phosphoric acid by wet process output |
| CN106734064B (en) * | 2016-11-29 | 2023-08-04 | 贵阳开磷化肥有限公司 | Phosphogypsum harmless treatment device and phosphogypsum harmless treatment method for wet-process phosphoric acid output |
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