CN101774560B - Device for preparing lithium dihydrogen phosphate - Google Patents
Device for preparing lithium dihydrogen phosphate Download PDFInfo
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- CN101774560B CN101774560B CN2010101278622A CN201010127862A CN101774560B CN 101774560 B CN101774560 B CN 101774560B CN 2010101278622 A CN2010101278622 A CN 2010101278622A CN 201010127862 A CN201010127862 A CN 201010127862A CN 101774560 B CN101774560 B CN 101774560B
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- vacuum evaporator
- heating cycle
- negative pressure
- monometallic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention discloses a device for preparing lithium dihydrogen phosphate, which can slow down the corrosion to a negative pressure evaporator. The device for preparing the lithium dihydrogen phosphate comprises the negative pressure evaporator and a heating circulation chamber, wherein a circulating pump is arranged between the heating circulation chamber and the negative pressure evaporator; the negative pressure evaporator, the circulating pump and the heating circulation chamber are connected together in sequence to form a circulation loop; and the heating circulation chamber is connected with a heating device. When the device works, solution of the lithium dihydrogen phosphate is circulated between the negative pressure evaporator and the heating circulation chamber so as to avoid an over-high temperature appearing on the inner wall of the negative pressure evaporator and greatly reduce the corrosion to the negative pressure evaporator; and simultaneously, in the circulation process, internal circulation spaces of the negative pressure evaporator and the heating circulation chamber can be used fully, so the device improves the heat exchange efficiency, is more favorable for the evaporation concentration of the solution of the lithium dihydrogen phosphate, can avoid product deposition caused after the concentration of the solution of the lithium dihydrogen phosphate, can make crystals uniform, and is suitable to be popularized and used in preparing various acidic chemical substances.
Description
Technical field
The invention discloses a kind of device for preparing chemical substance, be specifically related to a kind of preparation facilities of monometallic.
Background technology
At present, the preparation of monometallic mainly adopts monohydrate lithium hydroxide and phosphatase reaction to obtain, and carries out evaporation concentration after obtaining monometallic solution in evaporation concentration device.Mainly concentrate on erosion resistance and two aspects of temperature controlling of device both at home and abroad for the research of evaporation concentration device.The higher novel material of tolerate P-levels acid corrosion is mainly studied in the corrodibility aspect, has developed enamel, stainless steel, evaporation concentration devices such as plastics; The influence of temperature to phosphoric acid corrosion mainly studied in the temperature aspect, and it is even more serious to draw in high-temperature heating process the corrosion of evaporation concentration device, based on this, has developed the negative pressure of vacuum vaporizer, reduces the boiling temperature of water, improves vaporization efficiency.During work, the monometallic solution that will obtain by reaction joins in the cavity volume of vacuum evaporator from the top of vacuum evaporator, vacuum evaporator is carried out direct heating, after being heated to certain temperature, make the monometallic solution evaporation concentrate, the monometallic slurry of evaporation concentration obtains the monometallic product after separating, dry at separator.The subject matter that this method exists is: when monometallic solution is carried out evaporation concentration, because vacuum evaporator is carried out direct heating, make the contact position temperature very high (this temperature is greater than the fluid temperature in the vacuum evaporator) of inwall and monometallic solution of vacuum evaporator, cause the corrosion of vacuum evaporator comparatively seriously, one cover vacuum evaporator is promptly scrapped after using less than 3 months; In addition, after the upper liquid in the vacuum evaporator cavity volume evaporated, the space on its top can not effectively utilize carried out heat exchange to monometallic solution, so production efficiency is lower.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation facilities that slows down vacuum evaporator corrosive monometallic.
The technical solution adopted for the present invention to solve the technical problems is: the preparation facilities of monometallic, comprise vacuum evaporator, also comprise the heating cycle chamber, between heating cycle chamber and vacuum evaporator, be provided with recycle pump, vacuum evaporator, recycle pump and the heating cycle chamber formation circulation loop that is linked in sequence, the heating cycle chamber is connected with heating installation.
As the preferred version of technique scheme, described heating cycle chamber comprises heating cycle chamber body and is arranged on the intravital heat exchange bend pipe of heating cycle chamber that the inlet of heat exchange bend pipe connects recycle pump, outlet connection vacuum evaporator.
As optimized technical scheme, described heating installation comprises vapor generation boiler, cylinder, water tank and water pump, boiler, cylinder, heating cycle chamber body, water tank and the water pump formation circulation loop that is linked in sequence.
Further be that the top exit of vacuum evaporator has cooling chamber by pipe connection.
Further be, pipeline passes cooling chamber, and cooling chamber is provided with cooling water inlet and cooling water outlet.
Further be, be connected with steam-pipe on the heat exchange bend pipe, the pipeline of vacuum evaporator top exit is communicated with steam-pipe.
Further be, the vacuum evaporator bottom is connected with cooling room, and cooling room is connected with whizzer, and whizzer is connected with mother liquor tank.
The invention has the beneficial effects as follows: in the course of the work, monometallic solution circulates between vacuum evaporator and heating cycle chamber, thereby the too high phenomenon of temperature appears in the inwall that can avoid vacuum evaporator, reduced corrosion greatly, improved the work-ing life of vacuum evaporator vacuum evaporator; Simultaneously, in working cycle, can be fully used in the internal recycling space of vacuum evaporator and heating cycle chamber, improved heat exchange efficiency, be more conducive to the evaporation concentration of monometallic solution, improved production efficiency greatly, also can avoid causing the product deposition after the monometallic solution concentration, can make xln even, be adapted at applying in the preparation of various acidic chemical materials.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Be labeled as among the figure: vacuum evaporator 1, heating cycle chamber 2, recycle pump 3, vapor generation boiler 4, cylinder 5, water tank 6, water pump 7, heating cycle chamber body 8, heat exchange bend pipe 9, cooling chamber 10, pipeline 11, cooling water inlet 12, cooling water outlet 13, steam-pipe 14, cooling room 15, whizzer 16, mother liquor tank 17.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the preparation facilities of monometallic of the present invention, comprise vacuum evaporator 1, also comprise heating cycle chamber 2, between heating cycle chamber 2 and vacuum evaporator 1, be provided with recycle pump 3, vacuum evaporator 1, recycle pump 3 and the heating cycle chamber 2 formation circulation loop that is linked in sequence, heating cycle chamber 2 is connected with heating installation.During work, earlier the top of monometallic solution from vacuum evaporator 1 joined the cavity volume of vacuum evaporator 1, start recycle pump 3 then, monometallic solution is circulated between vacuum evaporator 1 and heating cycle chamber 2, adopt heating installation that heating cycle chamber 2 is heated then, make round-robin monometallic solution in heating cycle chamber 2, reach vaporization temperature, in working cycle, enter into vacuum evaporator 1 start vaporizer and concentrate.In this working process, because monometallic solution circulates between vacuum evaporator 1 and heating cycle chamber 2, thereby the too high phenomenon of temperature appears in the inwall that can avoid vacuum evaporator 1, reduced corrosion greatly to vacuum evaporator 1, improved the work-ing life of vacuum evaporator 1, simultaneously, in working cycle, vacuum evaporator 1 can be fully used with the internal recycling space of heating cycle chamber 2, improve heat exchange efficiency, be more conducive to the evaporation concentration of monometallic solution, improved production efficiency widely, also can avoid causing the product deposition after the monometallic solution concentration, can make xln even.
In the above-described embodiment, heating cycle chamber 2 can adopt a container with inlet and outlet to get final product, but in order to improve the heat exchange efficiency of monometallic solution to greatest extent, described heating cycle chamber 2 comprises heating cycle chamber body 8 and is arranged on heat exchange bend pipe 9 in the heating cycle chamber body 8, the inlet of heat exchange bend pipe 9 connects recycle pump 3, and outlet connects vacuum evaporator 1.When monometallic solution flows in heating cycle chamber 2, be in heat exchange bend pipe 9, to flow then, can better improve heat interchanging area, the corresponding heat exchange efficiency that also just improves monometallic solution.
In the above-mentioned embodiment,, can adopt magnetic induction loop to heat or adopts high-temp liquid to put into heating cycle chamber body 8 interior heat exchanging bend pipes 9 and heat in when heating.As optimal way, described heating installation comprises vapor generation boiler 4, cylinder 5, water tank 6 and water pump 7, boiler 4, cylinder 5, heating cycle chamber body 8, water tank 6 and the water pump 7 formation circulation loop that is linked in sequence.During work, water pump 7 is with the water suction boiler 4 in the water tank 6, heating obtains high-temperature steam in boiler 4, arrive heating cycle chamber body 8 through cylinder 5 then, utilize high-temperature steam heat exchanging bend pipe 9 to heat, finish the heat exchange with monometallic solution, exchange that later steam is got back to again in the water tank 6 and recycle.
In the above embodiment, because the steam in the vacuum evaporator 1 is the gas that is evaporated in the monometallic solution, have higher degree of cleaning, therefore, reusable edible prepares monometallic solution.Then the top exit at vacuum evaporator 1 is connected with cooling chamber 10 by pipeline 11, makes that the gas after vacuum evaporator 1 evaporated on top is finished cooling formation phlegma to cooling chamber 10, utilizes this phlegma to dispose monometallic solution again.
In the above-described embodiment, cooling chamber 10 can be a big cavity volume, directly in this cavity volume the gas after the evaporation is cooled off, as preferred implementation, pipeline 11 passes cooling chamber 10, and cooling chamber 10 is provided with cooling water inlet 12 and cooling water outlet 13.During work, water coolant is passed in the cooling chamber 10 from cooling water inlet 12, when the gas after the evaporation in the vacuum evaporator 1 enters in the cooling chamber 10 by pipeline 11, this water coolant is forced cooling heat transferring to vaporized gas, the phlegma that is the formation of cooling back that from pipeline 11, comes out, and discharge from cooling water outlet 13 through the water coolant after the heat exchange.
In the above embodiment, for better the steam of monometallic solution being discharged, be connected with steam-pipe 14 on heat exchange bend pipe 9, the pipeline 11 of vacuum evaporator 1 top exit is communicated with steam-pipe 14.Then the gas after the evaporation can directly enter into the pipeline 11 at vacuum evaporator 1 top by steam-pipe 14 in heat exchange bend pipe 9, and enters cooling chamber 10 and carry out condensation.
For obtaining the monometallic product, vacuum evaporator 1 bottom is connected with cooling room 15, and cooling room 15 is connected with whizzer 16, and whizzer 16 is connected with mother liquor tank 17.Monometallic slurry after concentrating reaches (one temperature reaches about 120 degree) after the suitable degree, it can be emitted from vacuum evaporator 1 and enter into cooling room 15 and cool off, in whizzer 16, carry out centrifugally operated then and reach product, mother liquor separation, mother liquor enters in the mother liquor tank 17, and the product in the whizzer 16 enters baking operation and obtains the monometallic product.
Claims (6)
1. the preparation facilities of monometallic, comprise vacuum evaporator (1), also comprise heating cycle chamber (2), between heating cycle chamber (2) and vacuum evaporator (1), be provided with recycle pump (3), vacuum evaporator (1), recycle pump (3) and heating cycle chamber (2) the formation circulation loop that is linked in sequence, heating cycle chamber (2) is connected with heating installation, it is characterized in that: vacuum evaporator (1) bottom is connected with cooling room (15), cooling room (15) is connected with whizzer (16), and whizzer (16) is connected with mother liquor tank (17).
2. the preparation facilities of monometallic as claimed in claim 1, it is characterized in that: described heating cycle chamber (2) comprises heating cycle chamber body (8) and is arranged on the interior heat exchange bend pipe (9) of heating cycle chamber body (8), the inlet of heat exchange bend pipe (9) connects recycle pump (3), and outlet connects vacuum evaporator (1).
3. the preparation facilities of monometallic as claimed in claim 2, it is characterized in that: described heating installation comprises vapor generation boiler (4), cylinder (5), water tank (6) and water pump (7), boiler (4), cylinder (5), heating cycle chamber body (8), water tank (6) and water pump (7) the formation circulation loop that is linked in sequence.
4. as the preparation facilities of claim 1,2 or 3 described monometallics, it is characterized in that: the top exit of vacuum evaporator (1) is connected with cooling chamber (10) by pipeline (11).
5. the preparation facilities of monometallic as claimed in claim 4, it is characterized in that: pipeline (11) passes cooling chamber (10), and cooling chamber (10) is provided with cooling water inlet (12) and cooling water outlet (13).
6. the preparation facilities of monometallic as claimed in claim 5, it is characterized in that: be connected with steam-pipe (14) on heat exchange bend pipe (9), the pipeline (11) of vacuum evaporator (1) top exit is communicated with steam-pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101278622A CN101774560B (en) | 2010-03-19 | 2010-03-19 | Device for preparing lithium dihydrogen phosphate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101278622A CN101774560B (en) | 2010-03-19 | 2010-03-19 | Device for preparing lithium dihydrogen phosphate |
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| Publication Number | Publication Date |
|---|---|
| CN101774560A CN101774560A (en) | 2010-07-14 |
| CN101774560B true CN101774560B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101278622A Active CN101774560B (en) | 2010-03-19 | 2010-03-19 | Device for preparing lithium dihydrogen phosphate |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202609970U (en) * | 2012-06-11 | 2012-12-19 | 蔡晓虎 | Normal-temperature water spontaneous boiling evaporation energy-conversion device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2159250Y (en) * | 1993-05-27 | 1994-03-23 | 山东牟平化工厂 | Standard forced circulation evaporator |
| CN101311108A (en) * | 2007-05-22 | 2008-11-26 | 上海比亚迪有限公司 | Separation method of lithium dihydrogen phosphate and preparation method thereof |
| CN101391784A (en) * | 2007-09-19 | 2009-03-25 | 中国铝业股份有限公司 | Full forced circulation type evaporator |
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2010
- 2010-03-19 CN CN2010101278622A patent/CN101774560B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2159250Y (en) * | 1993-05-27 | 1994-03-23 | 山东牟平化工厂 | Standard forced circulation evaporator |
| CN101311108A (en) * | 2007-05-22 | 2008-11-26 | 上海比亚迪有限公司 | Separation method of lithium dihydrogen phosphate and preparation method thereof |
| CN101391784A (en) * | 2007-09-19 | 2009-03-25 | 中国铝业股份有限公司 | Full forced circulation type evaporator |
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| Publication number | Publication date |
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| CN101774560A (en) | 2010-07-14 |
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