CN211158679U - Gas-liquid two-phase continuous reaction crystallization device - Google Patents
Gas-liquid two-phase continuous reaction crystallization device Download PDFInfo
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- CN211158679U CN211158679U CN201922238931.6U CN201922238931U CN211158679U CN 211158679 U CN211158679 U CN 211158679U CN 201922238931 U CN201922238931 U CN 201922238931U CN 211158679 U CN211158679 U CN 211158679U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 238000002425 crystallisation Methods 0.000 title claims abstract description 27
- 230000008025 crystallization Effects 0.000 title claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims description 26
- 230000008602 contraction Effects 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 10
- 238000004062 sedimentation Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 239000007921 spray Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
The utility model relates to a double-phase continuous reaction crystallization device of gas-liquid belongs to the chemical plant field. The reaction crystallization device comprises a crystallizer, wherein a jet reactor is arranged at the top of the crystallizer, the lower part of the crystallizer is connected with the upper part of the jet reactor through a circulating pump, and an input system of raw material gas is arranged at the top of the jet reactor. The utility model provides a crystallization reactor collects reaction, crystallization integrative, but continuous operation, and the formation is efficient, and the reaction is thorough, and the product granularity that makes is even, purity is good.
Description
Technical Field
The utility model relates to a chemical industry device field, concretely relates to double-phase reaction crystallization device of gas-liquid.
Background
Gas-liquid two-phase reaction crystallization is a common production technology in industrial production of chemical industry, pharmacy, light industry and the like, and the gas-liquid two-phase reaction crystallization comprises a gas-liquid two-phase reaction process and a crystallization process, and the whole process is complex.
The technology disclosed at present, gas-liquid two-phase reaction crystallization is operated in a reaction kettle with a stirrer, gas is directly introduced into the bottom of the reaction kettle, and the gas is mixed and contacted with liquid to react under the action of the stirrer in the reaction kettle, and the process is intermittent operation. This production process suffers from several disadvantages: 1) the gas distribution is not uniform, the gas-liquid reaction at the position of aeration in the stirring reaction kettle is sufficient, the reaction is insufficient due to the lack of sufficient gas in the region far away from the gas inlet, the reaction in the whole reaction kettle is not uniform, and the crystal granularity distribution and the product purity are not ideal; 2) the residence time of the crystals is different, the residence time of the crystals generated by the reaction of the slurry and the gas-liquid is different from that of the crystals generated near the end point of the reaction, so that the sizes of the crystals are not uniform; 3) because of intermittent operation, the production process needs to be stopped periodically to discharge crystals, the labor intensity is high, and the reaction kettle is in unstable operation, which is not beneficial to controlling the product quality, and each batch of products are not identical; 4) the gas phase resistance is large, and the gas is introduced into the bottom of the reaction kettle, so that the liquid level resistance needs to be overcome, the gas resistance is large, and the energy consumption is high; 5) the absorption is incomplete, and the liquid level fluctuation is large under the double actions of the stirrer and the gas bubbling, so that the retention time of the gas is not completely the same, and the incomplete absorption is easily caused.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough or defect, the utility model aims to provide a double-phase continuous reaction crystallization device of gas-liquid, the double-phase reaction process of the device integration gas-liquid, crystallization process to continuous operation has been realized.
The purpose of the utility model can be realized by the following technical scheme:
the gas-liquid two-phase continuous reaction crystallization device comprises a crystallizer, wherein a jet reactor is arranged at the top of the crystallizer, the lower part of the crystallizer is connected with the upper part of the jet reactor through a circulating pump, and a feed gas input system is arranged at the top of the jet reactor.
The utility model discloses among the technical scheme: the bottom of the crystallizer is a crystal discharge section, and the crystal discharge section is output through a crystal discharge pump.
The utility model discloses among the technical scheme: the upper part of the crystallizer is also provided with a raw material liquid interface.
The utility model discloses among the technical scheme: the top of the crystallizer is also provided with a washing device for reaction tail gas, the lower middle part of the device is provided with a defoaming device, a washing water interface is also arranged above the defoaming device, and the top of the washing device is a discharge port for the reaction tail gas.
The utility model discloses among the technical scheme: the lower part of the crystallizer is of a contracted conical surface structure, the included angle of the contraction is 60-100 degrees, the lower part of the conical surface structure is connected with a settling tube, and the conical surface structure and the settling tube form a crystal discharge section.
The utility model discloses among the technical scheme: the injection reactor is provided with a discharge pipe, an expansion pipe, a choke, a contraction pipe and an air inlet pipe from bottom to top in sequence, the top of the air inlet pipe is provided with a raw material gas connector, and the lower part of the air inlet pipe is provided with a liquid connector.
The utility model discloses among the technical scheme: the jet reactor is inserted from the top of the crystallizer, gas and liquid are quickly mixed in the jet reactor to perform gas-liquid reaction, the gas-liquid mixture after the reaction is discharged into the crystallizer, reaction tail gas is discharged after the defoaming of the defoaming device, and crystal feed liquid generated by the reaction is discharged from the lower part of the crystallizer.
The utility model discloses among the technical scheme: the crystallizer, the circulating pump and the jet reactor are sequentially connected to form a first closed loop which is used for realizing a reaction process.
The utility model discloses among the technical scheme: the jet reactor is of a Venturi structure and comprises an air inlet pipe, a contraction pipe, a throat pipe, an expansion pipe and a discharge pipe, wherein the air inlet pipe, the contraction pipe, the throat pipe, the expansion pipe and the discharge pipe are sequentially connected, the air inlet pipe, the throat pipe and the discharge pipe are of cylindrical pipe structures, and the contraction pipe and the expansion pipe are of conical pipe structures.
Preferably, the method comprises the following steps: the shrinkage angle of the shrinkage pipe of the jet reactor is 10-60 degrees, and the expansion angle of the expansion pipe of the jet reactor is 5-30 degrees.
Preferably, the method comprises the following steps: the upper part of an air inlet pipe of the jet reactor is provided with an air inlet, a spraying device is arranged in the air inlet pipe, gas and liquid are sprayed into a throat pipe from top to bottom, and the air speed in the throat pipe is 10-50 m/s.
Preferably, the method comprises the following steps: and a discharge pipe of the jet reactor extends out of the top cover of the crystallizer, and the extension length of the discharge pipe is 1000-4000 mm.
The utility model discloses among the technical scheme: the lower part of the crystallizer is of a contracted conical surface structure, the included angle of the contraction is 60-100 degrees, the lower part of the conical surface structure is connected with a settling tube, and the conical surface structure and the settling tube form a crystal discharge section. The crystal with the required grain diameter is obtained by adjusting the angle of the conical surface and the diameter of the settling tube.
The utility model has the advantages that:
1) the utility model provides a gas-liquid two-phase continuous reaction crystallization device, which couples the reaction process and the crystallization process, the gas and the liquid are fully contacted in the injection reactor, the reaction is thorough, and then the gas and the liquid enter the crystallizer, and the bottom of the crystallizer is also provided with a crystal discharge structure;
2) the utility model has the advantages that the obtained crystal has good granularity and high product purity, and realizes continuous production and steady operation, and the quality difference of products in each batch is controllable;
3) the utility model discloses the resistance is little, and the energy consumption is low, and the resistance hardly fluctuates.
4) The utility model has novel process, safety and reliability; and the adopted device has simple structure and convenient maintenance.
Drawings
The technical scheme of the utility model is further described below with the attached drawings:
FIG. 1 is a schematic structural view of a gas-liquid two-phase continuous reaction crystallization apparatus according to the present invention;
wherein: 1-crystallizer, 2-raw material liquid interface, 3-defoaming device, 4-washing water interface, 5-reaction tail gas discharge port, 6-jet reactor, 7-raw material gas interface, 8-circulating liquid interface, 9-circulating pump, 10-crystal discharge section, 11-crystal discharge interface and 12-crystal discharge pump.
FIG. 2 is a schematic view of the structure of a spray reactor.
Wherein: 13-raw material gas interface, 14-air inlet pipe, 15-contraction pipe, 16-throat pipe, 17-expansion pipe, 18-discharge pipe and 19-liquid interface.
Detailed Description
The present invention will be further explained with reference to the following embodiments, but the scope of the present invention is not limited thereto:
referring to fig. 1-2, the gas-liquid two-phase continuous reaction crystallization device comprises a crystallizer 1, wherein a spray reactor 6 is arranged at the top of the crystallizer 1, the lower part of the crystallizer 1 is connected with the upper part of the spray reactor 6 through a circulating pump 9, and a feed gas input system is arranged at the top of the spray reactor 6.
The bottom of the crystallizer 1 is a crystal discharge section 10, and the crystal discharge section 10 is output by a crystal discharge pump 12. The upper part of the crystallizer 1 is also provided with a raw material liquid interface 2. The top of the crystallizer 1 is also provided with a washing device for reaction tail gas, the middle lower part of the device is provided with a defoaming device 3, a washing water interface 4 is also arranged above the defoaming device 3, and the top of the washing device is a discharge port 5 for the reaction tail gas.
The lower part of the crystallizer is of a contracted conical surface structure, the included angle of contraction is 60-100 degrees, the lower part of the conical surface structure is connected with a section of sedimentation tube, and the conical surface structure and the sedimentation tube form a crystal discharge section 10.
The jet reactor 6 is provided with a discharge pipe 18, an expansion pipe 17, a throat pipe 16, a contraction pipe 15 and an air inlet pipe 14 in sequence from bottom to top, the top of the air inlet pipe is provided with a raw material gas connector 13, and the lower part of the air inlet pipe 14 is provided with a liquid connector 19. The contraction angle of the contraction pipe is 10-60 degrees, and the expansion angle of the expansion pipe is 5-30 degrees. And a discharge pipe of the jet reactor extends out of the top cover of the crystallizer, and the extension length of the discharge pipe is 1000-4000 mm.
The upper part of an air inlet pipe of the jet reactor is an air inlet, a spraying device is arranged in the air inlet pipe, gas and liquid are sprayed into a throat pipe from top to bottom, and the air speed in the throat pipe is 10-50 m/s.
Claims (8)
1. A gas-liquid two-phase continuous reaction crystallization device is characterized in that: the reaction crystallization device comprises a crystallizer (1), wherein a jet reactor (6) is arranged at the top of the crystallizer (1), the lower part of the crystallizer (1) is connected with the upper part of the jet reactor (6) through a circulating pump (9), and the top of the jet reactor (6) is provided with an input system of feed gas.
2. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: the bottom of the crystallizer (1) is a crystal discharge section (10), and the crystal discharge section (10) is output through a crystal discharge pump (12).
3. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: the upper part of the crystallizer (1) is also provided with a raw material liquid interface (2).
4. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: the top of the crystallizer (1) is also provided with a washing device for reaction tail gas, the middle lower part of the device is provided with a defoaming device (3), a washing water interface (4) is also arranged above the defoaming device (3), and the top of the washing device is a discharge port (5) for the reaction tail gas.
5. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: the lower part of the crystallizer is of a contracted conical surface structure, the included angle of the contraction is 60-100 degrees, the lower part of the conical surface structure is connected with a section of sedimentation tube, and the conical surface structure and the sedimentation tube form a crystal discharge section (10).
6. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: the injection reactor (6) is equipped with discharge pipe (18), expansion pipe (17), choke (16), shrink tube (15) and intake pipe (14) from the bottom up in proper order, the top of intake pipe is equipped with feed gas interface (13), and the lower part of intake pipe (14) is equipped with liquid interface (19).
7. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 6, characterized in that: the contraction angle of the contraction pipe is 10-60 degrees, and the expansion angle of the expansion pipe is 5-30 degrees.
8. The gas-liquid two-phase continuous reaction crystallization apparatus according to claim 1, characterized in that: and a discharge pipe (18) of the jet reactor (6) extends out of the top cover of the crystallizer (1), and the extension length of the discharge pipe is 1000-4000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922238931.6U CN211158679U (en) | 2019-12-13 | 2019-12-13 | Gas-liquid two-phase continuous reaction crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922238931.6U CN211158679U (en) | 2019-12-13 | 2019-12-13 | Gas-liquid two-phase continuous reaction crystallization device |
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| Publication Number | Publication Date |
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| CN211158679U true CN211158679U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922238931.6U Active CN211158679U (en) | 2019-12-13 | 2019-12-13 | Gas-liquid two-phase continuous reaction crystallization device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117632A (en) * | 2021-04-12 | 2021-07-16 | 南京硫研环保科技有限公司 | Sodium metabisulfite apparatus for producing |
-
2019
- 2019-12-13 CN CN201922238931.6U patent/CN211158679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113117632A (en) * | 2021-04-12 | 2021-07-16 | 南京硫研环保科技有限公司 | Sodium metabisulfite apparatus for producing |
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