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CN-122010216-A - Catalyst recovery unit is produced to antioxidant 1520

CN122010216ACN 122010216 ACN122010216 ACN 122010216ACN-122010216-A

Abstract

The invention belongs to the field of antioxidant production, in particular to a catalyst recovery device for antioxidant 1520 production, which aims at the problems that the existing technology adopting direct water washing directly substitutes a solvent and a catalyst into wastewater to cause that ammonia nitrogen and COD in the wastewater exceed standards and increase the sewage treatment difficulty, and provides the following proposal which comprises a frame, the top of frame is fixed in proper order and is provided with reation kettle, washing cauldron, rectifying column, condenser, reflux ratio controller, buffer tank and receiving tank, the cauldron lid is all installed through the bolt seal at reation kettle and washing cauldron's top, reflux ratio controller is provided with two delivery outlets, rectifying column's bottom is provided with the reboiler. According to the invention, the amine catalyst and the solvent methanol are directly distilled out for recycling in a rectification mode, and byproduct water and products are continuously left in the kettle for water washing, so that the catalyst and the solvent can be recycled repeatedly, the COD and ammonia nitrogen amount in the water washing water can be effectively reduced, and the water washing water consumption can be reduced.

Inventors

  • ZHUO QICONG
  • LIU YONGGUI
  • Kou Zongxiao
  • Shen Guangbao
  • WU YONGBAI
  • Wang Suixiong

Assignees

  • 兰州志一化工有限公司

Dates

Publication Date
20260512
Application Date
20260408

Claims (9)

  1. 1. An antioxidant 1520-produced catalyst recovery apparatus, comprising: Frame (1), the top of frame (1) is fixed in proper order and is provided with reation kettle (2), washing cauldron (3), rectifying column (4), condenser (5), reflux ratio controller (6), buffer tank (7) and receiving tank (8), cauldron lid (24) are all installed through the bolt seal at the top of reation kettle (2) and washing cauldron (3), reflux ratio controller (6) are provided with two delivery outlets, the bottom of rectifying column (4) is provided with the reboiler.
  2. 2. The antioxidant 1520 catalyst recycling device for production of the catalyst according to claim 1, wherein the top of the frame (1) is fixedly provided with a pneumatic diaphragm pump I (10) between the reaction kettle (2) and the water washing kettle (3), a connecting pipe I (9) is fixedly communicated with the bottom of the reaction kettle (2), one end of the connecting pipe I (9) is fixedly communicated with the input end of the pneumatic diaphragm pump I (10), the output end of the pneumatic diaphragm pump I (10) is fixedly communicated with a connecting pipe II (11), and the other end of the connecting pipe II (11) is fixedly communicated with one side above the water washing kettle (3).
  3. 3. The antioxidant 1520 catalyst recycling device for production of the catalyst according to claim 2, wherein the top of the frame (1) is fixedly arranged between the water washing kettle (3) and the rectifying tower (4), a connecting pipe III (12) is fixedly communicated with the bottom of the water washing kettle (3), the other end of the connecting pipe III (12) is fixedly communicated with the input end of the pneumatic diaphragm pump II (13), the output end of the pneumatic diaphragm pump II (13) is fixedly communicated with a connecting pipe IV (14), the other end of the connecting pipe IV (14) is fixedly communicated with one side of the middle part of the rectifying tower (4), a connecting pipe XII (23) is fixedly communicated with the bottom of the rectifying tower (4), and the other end of the connecting pipe XII (23) is fixedly communicated with one side of the bottom of the water washing kettle (3).
  4. 4. The antioxidant 1520 producing catalyst recycling apparatus according to claim 3, wherein a connecting pipe V (15) is fixedly communicated with the top of the rectifying tower (4), the connecting pipe V (15) is fixedly communicated with the input end of the condenser (5), a connecting pipe VIII (18) is fixedly communicated with one side of the rectifying tower (4) positioned above, and the connecting pipe VIII (18) is fixedly communicated with one output port of the reflux ratio controller (6).
  5. 5. The antioxidant 1520 producing catalyst recycling apparatus as set forth in claim 4, wherein the output end of the condenser (5) is fixedly connected with a connecting pipe VI (16), the other end of the connecting pipe VI (16) is connected with the top of the buffer tank (7), the bottom of the buffer tank (7) is fixedly connected with a connecting pipe VII (17), and the other end of the connecting pipe VII (17) is fixedly connected with the input port of the reflux ratio controller (6).
  6. 6. The apparatus for recovering catalyst from antioxidant 1520 according to claim 1, wherein the other outlet of said reflux ratio controller (6) is fixedly connected to a connection pipe IX (19), and the other end of said connection pipe IX (19) is fixedly connected to the top of the receiving tank (8).
  7. 7. The antioxidant 1520 producing catalyst recycling apparatus according to claim 1, wherein a connecting pipe X (20) is fixedly communicated with the bottom of the receiving tank (8), a pneumatic diaphragm pump III (21) is fixedly communicated with the top of the frame (1), the other end of the connecting pipe X (20) is fixedly communicated with the input end of the pneumatic diaphragm pump III (21), a connecting pipe XI (22) is fixedly communicated with the output end of the pneumatic diaphragm pump III (21), and the other end of the connecting pipe XI (22) is fixedly communicated with one side above the reaction kettle (2).
  8. 8. The antioxidant 1520 catalyst recycling device for production of the catalyst is characterized in that the tops of the two kettle covers (24) are respectively provided with a rotary column (25) in a sealing penetrating and rotating mode, the bottom ends of the rotary columns (25) are fixedly provided with hollow tubes (26), the hollow tubes (26) are respectively provided with a plurality of rotary rods (27) in a longitudinal penetrating and rotating mode, the two ends of the rotary rods (27) are respectively fixedly provided with stirring blades (28), the rotary rods (27) are respectively fixedly provided with a linkage frame (29) in the hollow tubes (26), one side of each linkage frame (29) is hinged with one connecting rod (30), the top wall of each hollow tube (26) is fixedly provided with an electric push rod (31), the output ends of the electric push rods (31) are hinged with the top ends of the connecting rods (30), the tops of the two kettle covers (24) are respectively fixedly provided with motors (32), and the output shafts of the two motors (32) are respectively fixedly connected with the tops of the two rotary columns (25).
  9. 9. The catalyst recovery device for antioxidant 1520 production of claim 1, wherein a plurality of trays (401) are longitudinally and fixedly arranged in the rectifying tower (4).

Description

Catalyst recovery unit is produced to antioxidant 1520 Technical Field The invention relates to the technical field of antioxidant production, in particular to a catalyst recovery device for antioxidant 1520 production. Background The antioxidant 1520 (chemical name 2, 4-di (n-octyl thiomethylene) -6-methylphenol) is prepared by condensation reaction under the protection of nitrogen gas by taking o-cresol, n-octyl mercaptan and paraformaldehyde as raw materials and piperidine as a catalyst. At present, catalysts such as dimethylamine, diethylamine and the like, methanol solvent and the like are used in the synthesis process of 1520 antioxidants, the reaction is transferred to a receiving kettle along with products after the reaction is finished, a direct water washing process is usually adopted in industrial production, and the solvents and the catalysts are directly substituted into wastewater, so that ammonia nitrogen and COD in the wastewater exceed standards, and the wastewater treatment difficulty is increased. In view of the above, the present disclosure proposes an antioxidant 1520 production catalyst recovery apparatus for solving the above-mentioned problems. Disclosure of Invention The invention provides a catalyst recovery device for antioxidant 1520 production, which solves the defects that in the prior art, a direct water washing process is adopted, and a solvent and a catalyst are directly substituted into wastewater, so that ammonia nitrogen and COD in the wastewater exceed standards, and the wastewater treatment difficulty is increased. The invention provides the following technical scheme: An antioxidant 1520 production catalyst recovery apparatus comprising: The top of frame is fixed in proper order and is provided with reation kettle, washing cauldron, rectifying column, condenser, reflux ratio controller, buffer tank and receiving tank, the kettle cover is all installed through the bolt seal at reation kettle and washing cauldron's top, reflux ratio controller is provided with two delivery outlets, rectifying column's tower bottom is provided with the reboiler. In one possible design, the top of frame is located fixed being provided with pneumatic diaphragm pump I between reation kettle and the washing cauldron, reation kettle's bottom fixed intercommunication has connecting pipe I, connecting pipe I's one end and pneumatic diaphragm pump I's input fixed intercommunication, pneumatic diaphragm pump I's output fixed intercommunication has connecting pipe II, connecting pipe II's the other end and the top one side fixed intercommunication of washing cauldron. In one possible design, the top of frame is located and is fixed to be provided with pneumatic diaphragm pump II between washing cauldron and the rectifying column, the fixed intercommunication of bottom of washing cauldron has connecting pipe III, the other end of connecting pipe III and pneumatic diaphragm pump II's input fixed intercommunication, pneumatic diaphragm pump II's output fixed intercommunication has connecting pipe IV, connecting pipe IV's the other end and the middle part one side fixed intercommunication of rectifying column, the fixed intercommunication in bottom of rectifying column has connecting pipe XII, connecting pipe XII's the other end and the fixed intercommunication in bottom one side of washing cauldron. In one possible design, the top of the rectifying tower is fixedly connected with a connecting pipe V, the connecting pipe V is fixedly connected with the input end of the condenser, one side of the rectifying tower above is fixedly connected with a connecting pipe VIII, and the connecting pipe VIII is fixedly connected with one output port of the reflux ratio controller. In one possible design, the output end of the condenser is fixedly connected with a connecting pipe VI, the other end of the connecting pipe VI is connected with the top of the buffer tank, the bottom of the buffer tank is fixedly connected with a connecting pipe VII, and the other end of the connecting pipe VII is fixedly connected with the input port of the reflux ratio controller. In one possible design, the other outlet of the reflux ratio controller is fixedly connected with a connecting pipe IX, the other end of which is fixedly connected with the top of the receiving tank. In one possible design, the bottom of receiving tank is fixed to be linked together and is had connecting pipe X, the top of frame is fixed to be linked together and is had pneumatic diaphragm pump III, the other end of connecting pipe X is fixed to be linked together with pneumatic diaphragm pump III's input, pneumatic diaphragm pump III's output is fixed to be linked together and is had connecting pipe XI, connecting pipe XI's the other end and reation kettle's top one side fixed to be linked together. In a possible design, two the top of kettle cover is all sealed runs through and rotates and be provided with the dwang, the bottom mounting of dwang is provided