CN214830025U - Continuous production equipment for trifluoro monochloro chrysanthemic acid - Google Patents
Continuous production equipment for trifluoro monochloro chrysanthemic acid Download PDFInfo
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- CN214830025U CN214830025U CN202023325343.5U CN202023325343U CN214830025U CN 214830025 U CN214830025 U CN 214830025U CN 202023325343 U CN202023325343 U CN 202023325343U CN 214830025 U CN214830025 U CN 214830025U
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Abstract
The utility model relates to a continuous production equipment of trifluoro monochloro chrysanthemic acid, including material blending tank (1), retort (2), first rectifying column (3), heat exchanger (4), loop reactor (5), buffer tank (6), second rectifying column (7), tubular reactor (8), extraction jar (9). The utility model discloses carry out the heat exchange with the material that comes out in the hot material that first rectifying column came out and the cold loop reactor, effectively utilized the heat in the rectifying column of first step, simultaneously, reduce and use a heat exchanger, reduced manufacturing cost, saved the space, improved production efficiency simultaneously. The hot gas exhausted from the tops of the two rectifying towers passes through the buffer tank, so that the further preheating of the substances in the buffer tank is realized, and the heat in the whole set of equipment is effectively utilized.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, concretely relates to continuous production equipment of trifluoro monochloro chrysanthemic acid.
Background
Trifluoro-monochloro chrysanthemic acid is called cyhalothrin, the chemical name of which is 3- (2-chloro-3, 3, 3-trifluoro-propen-1-yl) -2, 2-dimethyl cyclopropane carboxylic acid, and is an important intermediate of pyrethroids such as cyhalothrin, bifenthrin, heptafluoropenthrin, heptafluoromethyl ether and the like. The structural formula is as follows:
the methyl ester of cardiac acid and trifluoro trichloroethane are used as initial raw materials to prepare 3, 3-dimethyl-4, 6, 6-trichloro-7, 7, 7-trifluoro heptanoate through addition reaction; then the cis-trans-3- (2, 2-dichloro-3, 3, 3-trifluoropropyl) -2, 2-dimethyl cyclic carboxylate is prepared by cyclization reaction of the cis-trans-3- (2, 2-dichloro-3, 3, 3-trifluoropropyl) -potassium tert-butoxide; finally, the 3- (2-chlorine-3, 3, 3-trifluoro-propylene-1-group) -2, 2-dimethyl cyclopropane carboxylic acid, namely trifluoro monochloro chrysanthemic acid, is produced by saponification reaction with potassium hydroxide.
Although the existing continuous production equipment for the monochlorotrifluoroanthemic acid realizes the continuous production of the monochlorotrifluoroanthemic acid, the existing continuous production equipment is not enough to save space and is inconvenient for effectively utilizing materials and heat. Therefore, the utility model designs a continuous production device of trifluoro monochloro chrysanthemic acid which saves space and is convenient for effectively utilizing heat.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model provides a continuous production equipment of trifluoro monochloro chrysanthemic acid, the concrete technical scheme is as follows:
a continuous production device of trifluoro monochloro chrysanthemic acid comprises a material mixing tank (1), a reaction tank (2), a first rectifying tower (3), a heat exchanger (4), a loop reactor (5), a buffer tank (6), a second rectifying tower (7), a tubular reactor (8) and an extraction tank (9),
the material mixing tank (1) is connected with the reaction tank (2) through a pipeline, the bottom end of the reaction tank (2) is connected with the first rectifying tower (3) through a pipeline, the bottom end of the first rectifying tower (3) is connected with a hot liquid inlet of the heat exchanger (4) through a pipeline, a hot liquid outlet of the heat exchanger (4) is connected with the loop reactor (5) through a pipeline, the discharge hole of the loop reactor (5) is connected with the first cold liquid inlet of the heat exchanger (4) through a pipeline, the first cold liquid outlet of the heat exchanger (4) is connected with the buffer tank (6) through a pipeline, the buffer tank (6) is connected with the second rectifying tower (7) through a pipeline, the second rectifying tower (7) is connected with the tubular reactor (8) through a pipeline, the liquid outlet of the tubular reactor (8) is connected with the extraction tank (9) through a pipeline, and the material discharged from the extraction tank (9) is the liquid of the monochlorotrifluoroanthemic acid.
Furthermore, the heat exchanger (4) comprises a first cooling liquid pipeline (401) and a second cooling liquid pipeline (402), common cooling oil is introduced into the second cooling liquid pipeline (402), and low-temperature materials discharged from the loop reactor are introduced into the first cooling liquid pipeline (401).
Further, the outer wall of loop reactor (5) on be provided with coolant oil intermediate layer (501), inlet and the liquid outlet of coolant oil intermediate layer (501) pass through the pipeline and be connected with cooling oil tank (502), be provided with measuring pump (503) on the pipeline, be convenient for the loop reactor cooling, loop reactor (5) inside be provided with a plurality of temperature detect probe (504), temperature detect probe (504) and measuring pump (503) all be connected with automatic control device through the pipeline, guarantee that the temperature in the loop reactor is even.
Furthermore, the outer wall of the buffer tank (6) is provided with a heat insulation layer (601) to prevent the temperature of the heated material from being reduced in low-temperature weather.
Further, buffer tank (6) in be provided with two heating tube way (602), the import of a heating tube way is connected with the upper end gas outlet of first rectifying tower (3), the import of another heating tube way is connected with the gas outlet of second rectifying tower (7), further heats the material in buffer tank (6), realizes thermal effective utilization.
The utility model has the advantages that: the utility model discloses in involve 3 and not react, one of them step reaction is gone on in cold loop reactor, and the material that comes out from loop reactor needs through the heating, then gets into the rectifying column rectification, obtains trifluoro monochloro chrysanthemic acid at last. The utility model discloses carry out the heat exchange with the material that comes out in the hot material that first rectifying column came out and the cold loop reactor, effectively utilized the heat in the rectifying column of first step, simultaneously, reduce and use a heat exchanger, reduced manufacturing cost, saved the space, improved production efficiency simultaneously.
The hot gas exhausted from the tops of the two rectifying towers passes through the buffer tank, so that the further preheating of the substances in the buffer tank is realized, and the heat in the whole set of equipment is effectively utilized.
Drawings
Fig. 1 is a schematic structural diagram of a continuous production apparatus of trifluoro monochloro chrysanthemic acid in an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a loop reactor of a continuous production apparatus for trifluoro monochloro chrysanthemic acid according to an embodiment of the present invention.
FIG. 3 is a schematic diagram showing a detailed structure of a loop reactor of a continuous production apparatus for trifluoro monochloro chrysanthemic acid according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a buffer tank of a continuous production apparatus for trifluoro monochloro chrysanthemic acid according to an embodiment of the present invention.
The method comprises the following steps of 1-a material mixing tank, 2-a reaction tank, 3-a first rectifying tower, 4-a heat exchanger, 401-a first cooling liquid pipeline, 402-a second cooling liquid pipeline, 5-a loop reactor, 501-a cooling oil interlayer, 502-a cooling oil tank, 503-a metering pump, 504-a temperature detection probe, 6-a buffer tank, 601-a heat insulation layer, 602-a heating pipeline, 7-a second rectifying tower, 8-a tubular reactor and 9-an extraction tank.
The specific implementation mode is as follows:
in order to deepen understanding of the present invention, the following detailed description is made on the embodiments of the present invention with reference to the accompanying drawings.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve.
Examples
With reference to figures 1 to 4 of the drawings,
a continuous production device of trifluoro monochloro chrysanthemic acid comprises a material mixing tank 1, a reaction tank 2, a first rectifying tower 3, a heat exchanger 4, a loop reactor 5, a buffer tank 6, a second rectifying tower 7, a tubular reactor 8 and an extraction tank 9,
the material mixing tank 1 is connected with the reaction tank 2 through a pipeline, the bottom end of the reaction tank 2 is connected with the first rectifying tower 3 through a pipeline, the bottom end of the first rectifying tower 3 is connected with a hydrothermal solution inlet of the heat exchanger 4 through a pipeline, a hydrothermal solution outlet of the heat exchanger 4 is connected with the loop reactor 5 through a pipeline, a discharge port of the loop reactor 5 is connected with a first cold solution inlet of the heat exchanger 4 through a pipeline, a first cold solution outlet of the heat exchanger 4 is connected with the buffer tank 6 through a pipeline, the buffer tank 6 is connected with the second rectifying tower 7 through a pipeline, the second rectifying tower 7 is connected with the tubular reactor 8 through a pipeline, a liquid outlet of the tubular reactor 8 is connected with the extraction tank 9 through a pipeline, and the material discharged from the extraction tank 9 is trifluoro monochloro chrysanthemic acid liquid.
Further, the heat exchanger 4 comprises a first cooling liquid pipeline 401 and a second cooling liquid pipeline 402, wherein common cooling oil is introduced into the second cooling liquid pipeline 402, and the low-temperature material from the loop reactor is introduced into the first cooling liquid pipeline 401.
Further, be provided with coolant oil intermediate layer 501 on the outer wall of loop reactor 5, coolant oil intermediate layer 501's inlet and liquid outlet pass through the pipeline and are connected with cooling oil tank 502, are provided with measuring pump 503 on the pipeline, are convenient for cool down for loop reactor, and loop reactor 5 is inside to be provided with a plurality of temperature detect probe 504, and temperature detect probe 504 and measuring pump 503 all are connected with automatic control device through the pipeline, guarantee that the temperature in the loop reactor is even.
Further, the outer wall of the buffer tank 6 is provided with a heat insulation layer 601, so that the temperature of the material after temperature rise is prevented from being reduced in low-temperature weather.
Further, be provided with two heating tube 602 in the buffer tank 6, the import of a heating tube is connected with the upper end gas outlet of first rectifying column 3, and the import of another heating tube is connected with the gas outlet of second rectifying column 7, further heats the material in the buffer tank 6, realizes thermal effective utilization.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (5)
1. A continuous production device of trifluoro monochloro chrysanthemic acid is characterized by comprising a material mixing tank (1), a reaction tank (2), a first rectifying tower (3), a heat exchanger (4), a loop reactor (5), a buffer tank (6), a second rectifying tower (7), a tubular reactor (8) and an extraction tank (9),
the material mixing tank (1) is connected with the reaction tank (2) through a pipeline, the bottom end of the reaction tank (2) is connected with the first rectifying tower (3) through a pipeline, the bottom end of the first rectifying tower (3) is connected with a hot liquid inlet of the heat exchanger (4) through a pipeline, a hot liquid outlet of the heat exchanger (4) is connected with the loop reactor (5) through a pipeline, the discharge hole of the loop reactor (5) is connected with the first cold liquid inlet of the heat exchanger (4) through a pipeline, the first cold liquid outlet of the heat exchanger (4) is connected with the buffer tank (6) through a pipeline, the buffer tank (6) is connected with the second rectifying tower (7) through a pipeline, the second rectifying tower (7) is connected with the tubular reactor (8) through a pipeline, the liquid outlet of the tubular reactor (8) is connected with the extraction tank (9) through a pipeline, and the material discharged from the extraction tank (9) is the liquid of the monochlorotrifluoroanthemic acid.
2. A plant for the continuous production of trifluoro-monochloro-chrysanthemic acid according to claim 1, characterized in that said heat exchanger (4) comprises a first cooling fluid conduit (401) and a second cooling fluid conduit (402), said second cooling fluid conduit (402) being fed with a common cooling oil, said first cooling fluid conduit (401) being fed with the cryogenic material coming out of the loop reactor.
3. The continuous production equipment of trifluoro monochloro chrysanthemic acid according to claim 1, characterized in that, the outer wall of the loop reactor (5) is provided with a cooling oil interlayer (501), the liquid inlet and the liquid outlet of the cooling oil interlayer (501) are connected with a cooling oil tank (502) through a pipeline, a metering pump (503) is arranged on the pipeline, which is convenient for cooling the loop reactor, a plurality of temperature detection probes (504) are arranged inside the loop reactor (5), and the temperature detection probes (504) and the metering pump (503) are both connected with an automatic control device through a pipeline, thereby ensuring the uniform temperature inside the loop reactor.
4. The continuous production equipment of trifluoro monochloro chrysanthemic acid according to claim 1, characterized in that the outer wall of the buffer tank (6) is provided with an insulating layer (601) to prevent the temperature of the material from decreasing after the temperature is raised in low temperature weather.
5. The continuous production equipment of the trifluoro monochloro chrysanthemic acid according to claim 2, characterized in that, two heating pipelines (602) are arranged in the buffer tank (6), the inlet of one heating pipeline is connected with the upper end gas outlet of the first rectifying tower (3), the inlet of the other heating pipeline is connected with the gas outlet of the second rectifying tower (7), and the materials in the buffer tank (6) are further heated, so as to realize the effective utilization of heat.
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CN112661601A (en) * | 2020-12-31 | 2021-04-16 | 南京伟鑫生物医药有限公司 | Continuous production equipment for trifluoro monochloro chrysanthemic acid |
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Cited By (1)
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CN112661601A (en) * | 2020-12-31 | 2021-04-16 | 南京伟鑫生物医药有限公司 | Continuous production equipment for trifluoro monochloro chrysanthemic acid |
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