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CN-224221325-U - Jacket reaction kettle for chemical industry

CN224221325UCN 224221325 UCN224221325 UCN 224221325UCN-224221325-U

Abstract

The utility model provides a jacket reaction kettle for chemical industry, which comprises a reaction kettle body and a jacket, wherein the jacket is arranged on the outer side of the reaction kettle body, an inlet pipe is arranged on the upper part of the side surface of the jacket, an outlet pipe is arranged at the bottom of the side surface of the jacket, an annular uniform distributor is arranged in the jacket and communicated with the inlet pipe, the annular uniform distributor surrounds the reaction kettle body, second small holes are uniformly distributed on the lower side of the upper side of the annular uniform distributor, and the number of the second small holes is 2 to 4 times that of the first small holes. The utility model has the beneficial effects that the upper side and the lower side of the annular distributor are provided with the air holes, so that the steam completes radial balanced diffusion when flowing through the annular cavity, and then a uniform steam curtain is formed through dense micropores at the upper layer, thereby effectively eliminating a local overheating zone caused by the traditional single-point steam inlet, obviously improving the consistency of a thermal field in the reaction process and creating a uniform heat source environment for temperature-sensitive chemical reaction.

Inventors

  • Ren Caize
  • LI QINGCHAO
  • LIU XILIN
  • MA ZHENYU
  • ZHU JINWEI
  • HUANG CUNYING

Assignees

  • 山东阳谷华泰化工股份有限公司

Dates

Publication Date
20260512
Application Date
20250704

Claims (7)

  1. 1. The jacket reaction kettle for the chemical industry comprises a reaction kettle body (1) and a jacket (2), wherein the jacket (2) is arranged on the outer side of the reaction kettle body (1), an inlet pipe (3) is arranged on the upper portion of the side face of the jacket (2), and an outlet pipe (4) is arranged at the bottom of the jacket.
  2. 2. The jacketed reaction kettle for chemical industry as set forth in claim 1, wherein the second small holes (52) and the first small holes (51) are distributed in a staggered manner.
  3. 3. A jacketed reaction kettle for chemical industry according to claim 1, wherein the second small holes (52) have a pore diameter of 3 to 5mm, and the first small holes (51) have a pore diameter of 1 to 3 mm.
  4. 4. The jacket reaction kettle for chemical engineering according to claim 1, wherein a plurality of supports (6) are fixedly arranged on the side wall of the jacket (2), and the annular uniform distributor (5) is arranged on the supports (6).
  5. 5. The jacket reactor for chemical engineering according to claim 1, wherein the inlet pipe (3) is provided with a three-way pipe which is respectively communicated with the steam inlet and the circulating water outlet, and the outlet pipe (4) is provided with a three-way pipe which is respectively communicated with the steam outlet and the circulating water inlet, so that the circulation directions of the cold medium and the heat medium in the jacket layer are opposite.
  6. 6. The jacketed reaction kettle for chemical industry, as set forth in claim 5, is characterized in that the tee pipe is provided with a flange connected with an inlet pipe (3) or an outlet pipe (4).
  7. 7. The jacket reaction kettle for chemical engineering according to claim 1, wherein the top of the reaction kettle body (1) is provided with a stirrer opening (7), and the bottom is provided with a material outlet (8).

Description

Jacket reaction kettle for chemical industry Technical Field The utility model relates to the technical field of chemical equipment, in particular to a jacket reaction kettle for chemical industry. Background In chemical production, a jacketed reaction kettle is core equipment for temperature-sensitive unit operation. The temperature control performance directly determines the purity of the product, the reaction efficiency and the energy consumption level. However, due to the inherent defects of structural design and temperature control logic, the traditional jacket reaction kettle is faced with the problems of uneven temperature distribution, energy waste, system complexity and the like for a long time, and breakthrough needs to be realized through technical innovation. Particularly, part of the reaction needs to stand for liquid separation after stirring, and the introduced heat medium steam is unevenly distributed to cause local overheating because long-time materials in the reaction kettle do not flow, when the traditional jacket reaction kettle is introduced with steam, the steam directly enters from the bottom of the jacket, and high-temperature steam is rapidly accumulated at the lower part of the jacket due to density difference, so that the lower half area of the kettle body forms a local overheating area. And the heat transfer efficiency of the upper half area is reduced after the steam is condensed, and the temperature is obviously lower than the set value. This vertical temperature difference causes regional coking or reaction stagnation of the materials during the reaction. When the reaction is to be switched to the cooling stage, a refrigerant is usually injected from the top of the jacket. The reverse flow mode of the heat medium from bottom to top and the refrigerant from top to bottom ensures that cold and hot fluid forms opposite flushing in the jacket, thereby further preventing heat from uniformly diffusing. Particularly in the rapid exothermic reaction, the refrigerant cannot cover the high-temperature area in time, so that the safety accident is caused by local overtemperature. Meanwhile, the frequent switching of the cold and hot media requires compressed gas to purge the residual liquid of the jacket, so that the operation is complicated, and the risk of liquid mixing is easily caused by misoperation of a valve. Disclosure of utility model In order to solve the problem that partial reaction needs to be kept still for liquid separation after stirring, the distribution of the steam of the introduced heat medium is uneven and local overheating is caused because the materials in the reaction kettle do not flow for a long time; The utility model provides a jacket reaction kettle for chemical industry, which comprises a reaction kettle body and a jacket, wherein the jacket is arranged on the outer side of the reaction kettle body, an inlet pipe is arranged on the upper part of the side surface of the jacket, an outlet pipe is arranged at the bottom of the side surface of the jacket, an annular uniform distributor is arranged in the jacket and communicated with the inlet pipe, the annular uniform distributor surrounds the reaction kettle body, second small holes are uniformly distributed on the lower side of the upper side of the annular uniform distributor, and the number of the second small holes is 2 to 4 times that of the first small holes. As a preferred embodiment, the second small holes are offset from the first small holes. As a preferred embodiment, the second small hole has a pore diameter of 3 to 5mm, and the first small hole has a pore diameter of 1 to 3 mm. As a preferable scheme, the side wall of the jacket is fixedly provided with a plurality of supports, and the annular uniform distributor is arranged on the supports. As a preferable scheme, the inlet pipe is provided with a three-way pipe which is respectively communicated with the steam inlet and the circulating water outlet, and the outlet pipe is provided with a three-way pipe which is respectively communicated with the steam outlet and the circulating water inlet, so that the circulation directions of the cold medium and the hot medium in the jacket layer are opposite. As a preferable scheme, the tee pipe is provided with a flange connected with an inlet pipe or an outlet pipe. As a preferable scheme, the top of the reaction kettle body is provided with a stirrer opening, and the bottom of the reaction kettle body is provided with a material outlet. The utility model has the beneficial effects that: 1. According to the utility model, the upper side and the lower side of the annular distributor are provided with the air holes, so that the steam completes radial balanced diffusion when flowing through the annular cavity, and then a uniform steam curtain is formed through the dense micropores on the upper layer, so that a local overheating zone caused by the traditional single-point steam inlet is effectively eliminated, t