CN115253343A - Flash evaporation device used in alumina evaporation process - Google Patents
Flash evaporation device used in alumina evaporation process Download PDFInfo
- Publication number
- CN115253343A CN115253343A CN202210879864.XA CN202210879864A CN115253343A CN 115253343 A CN115253343 A CN 115253343A CN 202210879864 A CN202210879864 A CN 202210879864A CN 115253343 A CN115253343 A CN 115253343A
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- China
- Prior art keywords
- flash
- flash tank
- fixed surface
- evaporation
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001704 evaporation Methods 0.000 title claims abstract description 49
- 230000008020 evaporation Effects 0.000 title claims abstract description 48
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008569 process Effects 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims 3
- 238000007701 flash-distillation Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 34
- 230000000694 effects Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 238000001802 infusion Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/06—Flash distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides a flash evaporation device used in an alumina evaporation process, and relates to the technical field of flash evaporation devices. This a flash distillation plant for in aluminium oxide evaporation flow, including the flash tank, the last fixed surface of flash tank is connected with flange, flange's last fixed surface is connected with the air extractor, the equal fixedly connected with gas-supply pipe of output and input of air extractor, the input that the air extractor was kept away from to the gas-supply pipe extends through flange and extends to the inside of flash tank, the inboard fixed surface of flash tank is connected with the buffer board, the through-hole has been seted up on the surface of buffer board, the left side fixed surface of flash tank is connected with the inlet pipe, the fixed surface of inlet pipe is connected with the relief pressure valve. Through setting up the air extractor, can accelerate the exhaust velocity of steam effectively, prevent that steam from gathering in the flash tank is inside, can make the flash tank remain the state of negative pressure throughout simultaneously for flash evaporation efficiency remains stable for a long time, is favorable to improving the efficiency of flash evaporation.
Description
Technical Field
The invention relates to the technical field of flash evaporation devices, in particular to a flash evaporation device used in an alumina evaporation process.
Background
In the alumina hydrometallurgy production process, bauxite slurry and caustic soda are subjected to high-temperature and high-pressure digestion reaction in an autoclave (or a pipeline digester device) to generate a mixture of sodium aluminate and red mud with high temperature and high pressure, the high-pressure digestion is taken as a relatively important process and commonly used in a flash tank, the flash tank is used for flashing materials with high temperature and high pressure, so that the materials fully release secondary steam after the materials subjected to high-pressure digestion are flashed in a plurality of stages, the temperature and the pressure of the materials are reduced, the flash is that high-pressure saturated liquid enters a relatively low-pressure container, the saturated liquid becomes a part of saturated steam and saturated liquid under the container pressure due to sudden pressure reduction, the boiling point of the materials is increased along with the increase of the pressure, the lower the pressure is lower, the boiling point of the high-pressure high-temperature fluid is reduced and enters the flash tank, and the fluid is quickly boiled and vaporized in the flash tank and separated into two phases.
Use flash distillation plant when evaporating the smelting to aluminium oxide at present, be the state that belongs to the ordinary pressure in the flash tank, because the fluid is the high-temperature high-pressure state, still can reach the effect that the fluid carries out the decompression in the fluid process relief pressure valve entering flash tank, and the steam that the fluid evaporation produced also is naturally through the gas-supply pipe discharge, can exist the insufficient flash evaporation operation that needs carry out many times of fluid evaporation like this, thereby reduce fluidic flash vaporization efficiency, steam exhaust's speed is also slower simultaneously, the internal pressure that can lead to the flash tank from the time operation becomes high, thereby reduce the flash vaporization effect.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a flash evaporation device used in an alumina evaporation process, which solves the problems that the steam generated by fluid evaporation is naturally discharged through a gas pipe, so that the fluid evaporation is insufficient and multiple flash evaporation operations are required, the flash evaporation efficiency of the fluid is reduced, meanwhile, the steam discharge speed is low, and the internal pressure of a flash evaporation tank is increased due to time operation, so that the flash evaporation effect is reduced.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a flash distillation device for among alumina evaporation flow, includes the flash tank, the last fixed surface of flash tank is connected with flange, flange's last fixed surface is connected with the air exhauster, the output and the equal fixedly connected with gas-supply pipe of input of air exhauster, the input that the air exhauster was kept away from to the gas-supply pipe extends through flange and extends to the inside of flash tank, the inboard fixed surface of flash tank is connected with the buffer board, the through-hole has been seted up on the surface of buffer board, the left side fixed surface of flash tank is connected with the inlet pipe, the fixed surface of inlet pipe is connected with the relief pressure valve.
Preferably, the output end of the air pipe far away from the air extractor is fixedly connected with a check valve, the surface of the air pipe is fixedly connected with a stop valve, and the stop valve is positioned above the check valve.
Preferably, the feed pipe is communicated with the inside of the flash tank, and the position of the feed pipe is above the buffer plate.
Preferably, the buffer plates are respectively and fixedly connected to the left and right inner side surfaces of the flash tank, the buffer plates are arranged in an alternating manner, and the buffer plates are arranged in an inclined manner.
Preferably, the lower surface of the flash tank is fixedly connected with an infusion tube, the surface of the infusion tube is fixedly connected with an electromagnetic valve, and the infusion tube is communicated with the inside of the flash tank.
Preferably, the lower fixed surface of flash tank is connected with the pillar, the lower fixed surface that the pillar kept away from the flash tank is connected with the backup pad.
Preferably, the left side fixed surface of flash tank is connected with the manometer, the sense terminal of manometer extends to the inside of flash tank, the position of manometer is located the top of inlet pipe.
The working principle is as follows: when the flash tank is used, firstly, air in the flash tank 1 is extracted through the air extractor 6, so that the inside of the flash tank 1 is in a negative pressure state, fluid is introduced into the flash tank 1 through the feed pipe 2 after being subjected to pressure reduction treatment through the pressure reducing valve 3, the boiling point of the fluid is reduced along with the reduction of pressure when the fluid enters the inside of the flash tank 1, the temperature change condition of the fluid is negligible, therefore, the temperature of the fluid is higher than that of the fluid, the fluid is rapidly evaporated into steam which is rapidly extracted under the action of the air extractor 6, and the circulation which cannot be evaporated is discharged from the infusion pipe 12 after being buffered through the buffer plate 14.
(III) advantageous effects
The invention provides a flash evaporation device used in an alumina evaporation process. The method has the following beneficial effects:
1. through setting up the air extractor, can accelerate the exhaust velocity of steam effectively, prevent that steam from gathering in the flash tank is inside, can make the flash tank remain the state of negative pressure throughout simultaneously for flash distillation efficiency remains stable for a long time, is favorable to improving the efficiency of flash distillation.
2. The flow speed of the fluid can be effectively reduced by arranging the buffer plate, and the time of the fluid inside the flash tank can be well prolonged, so that the fluid is evaporated more thoroughly, the number of times of fluid flash evaporation is reduced, and the efficiency of fluid flash evaporation is improved.
Drawings
FIG. 1 is a perspective view showing the external structure of a flash evaporation apparatus used in an alumina evaporation process according to the present invention;
FIG. 2 is a front view of the internal structure of a flash evaporation apparatus used in the alumina evaporation process according to the present invention;
FIG. 3 is a front view of the external structure of a flash evaporation apparatus used in the alumina evaporation process according to the present invention;
fig. 4 is an enlarged view of a in fig. 2 according to the present invention.
Wherein, 1, a flash tank; 2. a feed pipe; 3. a pressure reducing valve; 4. a pressure gauge; 5. a connecting flange; 6. an air extractor; 7. a gas delivery pipe; 8. a check valve; 9. a stop valve; 10. a pillar; 11. a support plate; 12. a transfusion tube; 13. an electromagnetic valve; 14. a buffer plate; 15. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, an embodiment of the present invention provides a flash evaporation apparatus for use in an alumina evaporation process, including a flash tank 1, a connection flange 5 is fixedly connected to an upper surface of the flash tank 1, the connection flange 5 is used for facilitating a sealing connection between an air pump 6 and a gas pipe 7, the upper surface of the connection flange 5 is fixedly connected with an air pump 6, the air pump is used for facilitating a pumping out of vapor generated by evaporation in the flash tank 1, and simultaneously, the inside of the flash tank 1 is always kept in a negative pressure state, an output end and an input end of the air pump 6 are both fixedly connected with the gas pipe 7, the gas pipe 7 is used for facilitating a delivery of vapor, the input end of the gas pipe 7 far from the air pump 6 extends into the flash tank 1 along the connection flange 5, a buffer plate 14 is fixedly connected to an inner side surface of the flash tank 1, the buffer plate 14 is used for buffering fluid so as to slow down a velocity of the fluid, and simultaneously, and for facilitating an impact force of the fluid when the fluid falls, a through the buffer plate 14 is provided for facilitating a through hole 15 is provided for uniformly distributing the fluid into a pressure reducing valve 2, and a pressure reducing valve 2 is provided for connecting the flash tank 1, and a pressure reducing valve 3 is provided for introducing the fluid into the fluid in the flash tank 1.
The gas pipe 7 is kept away from the output fixedly connected with check valve 8 of air extractor 6, is the effect in order to prevent that vapour from taking place the backward flow through setting up check valve 8, and the fixed surface of gas pipe 7 is connected with stop valve 9, is the effect of for the convenience of control vapour flow break-make through setting up stop valve 9, and the position of stop valve 9 is located the top of check valve 8.
The feed pipe 2 communicates with the inside of the flash tank 1, and the feed pipe 2 communicates with the flash tank 1 by being disposed so as to facilitate the introduction of the fluid into the inside of the flash tank 1, and the feed pipe 2 is located above the buffer plate 14.
The lower fixed surface of flash tank 1 is connected with transfer line 12, is convenient for the effect that the fluid that can not evaporate discharges through setting up transfer line 12, and the fixed surface of transfer line 12 is connected with solenoid valve 13, and you have just set up solenoid valve 13 in the bucket is convenient for the effect of control fluid break-make, and transfer line 12 is linked together with the inside of flash tank 1.
The lower surface of the flash tank 1 is fixedly connected with a support column 10, the support column is used for facilitating positioning and supporting, the support column 10 is far away from the lower surface of the flash tank 1 is fixedly connected with a support plate 11, and the support plate 11 is used for facilitating improvement of supporting stability.
The left side fixed surface of flash tank 1 is connected with manometer 4, and manometer 4's sense terminal extends to flash tank 1's inside, and manometer 4's position is located the top of inlet pipe 2, is for the effect of the pressure of conveniently detecting flash tank 1 inside through setting up manometer 4.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A flash evaporation device for an alumina evaporation process comprises a flash evaporation tank (1), and is characterized in that: the last fixed surface of flash tank (1) is connected with flange (5), the last fixed surface of flange (5) is connected with air extractor (6), the output and the equal fixedly connected with gas-supply pipe (7) of input of air extractor (6), the input that air extractor (6) were kept away from in gas-supply pipe (7) prolongs the inside that runs through flange (5) and extend to flash tank (1), the inboard fixed surface of flash tank (1) is connected with buffer board (14), through-hole (15) have been seted up on the surface of buffer board (14), the left side fixed surface of flash tank (1) is connected with inlet pipe (2), the fixed surface of inlet pipe (2) is connected with relief pressure valve (3).
2. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the air pump is characterized in that the air delivery pipe (7) is far away from an output end fixedly connected with check valve (8) of the air pump (6), the surface fixedly connected with stop valve (9) of the air delivery pipe (7), and the position of the stop valve (9) is located above the check valve (8).
3. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the feed pipe (2) is communicated with the inside of the flash tank (1), and the feed pipe (2) is positioned above the buffer plate (14).
4. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the flash tank is characterized in that the buffer plates (14) are respectively and fixedly connected to the left inner side surface and the right inner side surface of the flash tank (1), the buffer plates (14) are arranged alternately, and the buffer plates (14) are arranged obliquely.
5. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the lower surface of the flash tank (1) is fixedly connected with a liquid conveying pipe (12), the surface of the liquid conveying pipe (12) is fixedly connected with an electromagnetic valve (13), and the liquid conveying pipe (12) is communicated with the inside of the flash tank (1).
6. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the lower fixed surface of flash tank (1) is connected with pillar (10), the lower fixed surface that flash tank (1) was kept away from in pillar (10) is connected with backup pad (11).
7. A flash apparatus for use in an alumina evaporation process according to claim 1, wherein: the left side fixed surface of flash tank (1) is connected with manometer (4), the sense terminal of manometer (4) extends to the inside of flash tank (1), the position of manometer (4) is located the top of inlet pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879864.XA CN115253343A (en) | 2022-07-25 | 2022-07-25 | Flash evaporation device used in alumina evaporation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210879864.XA CN115253343A (en) | 2022-07-25 | 2022-07-25 | Flash evaporation device used in alumina evaporation process |
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| Publication Number | Publication Date |
|---|---|
| CN115253343A true CN115253343A (en) | 2022-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210879864.XA Pending CN115253343A (en) | 2022-07-25 | 2022-07-25 | Flash evaporation device used in alumina evaporation process |
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| CN (1) | CN115253343A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116459636A (en) * | 2023-05-05 | 2023-07-21 | 南通星球石墨股份有限公司 | Deep-resolution hydrochloric acid treatment device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202263409U (en) * | 2011-09-29 | 2012-06-06 | 淄博市临淄恒兴化工厂有限公司 | Distillation tower |
| CN104344149A (en) * | 2014-09-12 | 2015-02-11 | 徐东海 | Water pipe with flow slowing device |
| CN104784952A (en) * | 2014-12-21 | 2015-07-22 | 于桂菊 | A distillation tower |
| CN205569791U (en) * | 2016-04-07 | 2016-09-14 | 山东万福达化工有限公司 | Flash tank |
| KR101806498B1 (en) * | 2016-10-13 | 2017-12-08 | 한국에너지기술연구원 | A Flash Tank for Supplying Highly Dried Steam |
| CN214839157U (en) * | 2020-12-31 | 2021-11-23 | 安徽六国化工股份有限公司 | Leakage-proof structure of black water pipeline |
| CN215427374U (en) * | 2021-07-21 | 2022-01-07 | 临邑禹王植物蛋白有限公司 | Flash distillation system of serialization operation |
-
2022
- 2022-07-25 CN CN202210879864.XA patent/CN115253343A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202263409U (en) * | 2011-09-29 | 2012-06-06 | 淄博市临淄恒兴化工厂有限公司 | Distillation tower |
| CN104344149A (en) * | 2014-09-12 | 2015-02-11 | 徐东海 | Water pipe with flow slowing device |
| CN104784952A (en) * | 2014-12-21 | 2015-07-22 | 于桂菊 | A distillation tower |
| CN205569791U (en) * | 2016-04-07 | 2016-09-14 | 山东万福达化工有限公司 | Flash tank |
| KR101806498B1 (en) * | 2016-10-13 | 2017-12-08 | 한국에너지기술연구원 | A Flash Tank for Supplying Highly Dried Steam |
| CN214839157U (en) * | 2020-12-31 | 2021-11-23 | 安徽六国化工股份有限公司 | Leakage-proof structure of black water pipeline |
| CN215427374U (en) * | 2021-07-21 | 2022-01-07 | 临邑禹王植物蛋白有限公司 | Flash distillation system of serialization operation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116459636A (en) * | 2023-05-05 | 2023-07-21 | 南通星球石墨股份有限公司 | Deep-resolution hydrochloric acid treatment device |
| CN116459636B (en) * | 2023-05-05 | 2024-05-17 | 南通星球石墨股份有限公司 | Deep-resolution hydrochloric acid treatment device |
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