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CN-224207434-U - High-efficient condensing equipment of perfluoropolyether distillation process

CN224207434UCN 224207434 UCN224207434 UCN 224207434UCN-224207434-U

Abstract

The utility model relates to the technical field of distillation gas condensation, in particular to a high-efficiency condensing device for a perfluoropolyether distillation process. The condensing device comprises a condensing box body, wherein an air inlet pipe is arranged at one end of the condensing box body, a liquid outlet pipe is arranged at the other end of the condensing box body, and an air return component for recycling uncondensed gas is arranged on the liquid outlet pipe. The method avoids the raw material loss caused by direct discharge of uncondensed gas, effectively reduces the production cost, simultaneously reduces the pollution to the environment possibly caused by the discharge of the uncondensed gas, and meets the environmental protection requirement.

Inventors

  • WANG XUEHU

Assignees

  • 上海派胜信息科技有限公司

Dates

Publication Date
20260508
Application Date
20250604

Claims (7)

  1. 1. The efficient condensing device for the perfluoropolyether distillation process is characterized by comprising a condensing box body (110), wherein a condensing assembly for cooling distilled steam is arranged in the condensing box body (110), a cooling circulation assembly for keeping the condensing assembly in a low-temperature state is arranged on the side wall of the condensing box body (110), an air inlet pipe (120) is arranged at one end of the condensing box body (110), a liquid outlet pipe (130) is arranged at the other end of the condensing box body (110), and an air return assembly for recycling uncondensed gas is arranged on the liquid outlet pipe (130); The air return assembly comprises an air return pipe (210), one end of the air return pipe (210) is arranged on the liquid outlet pipe (130), and the other end of the air return pipe (210) is arranged on the air inlet pipe (120).
  2. 2. The device for efficiently condensing a perfluoropolyether during distillation as set forth in claim 1, wherein a check valve is disposed in said return pipe (210), said check valve being disposed at an end of said return pipe (210) adjacent to said intake pipe (120).
  3. 3. The high-efficiency condensing device for a perfluoropolyether distillation process according to claim 2 wherein said condensing assembly comprises a condensing tube (410) and a cooling medium, said condensing tube (410) is disposed in a condensing box (110), two ends of said condensing tube (410) are respectively connected to an air inlet tube (120) and a liquid outlet tube (130), said condensing tube (410) has a spiral structure, and said cooling medium is disposed in said condensing box (110).
  4. 4. A high-efficiency condensing apparatus for a perfluoropolyether distillation process as set forth in claim 3 wherein said cooling circulation assembly comprises a cooling tank (310), said cooling tank (310) being mounted on a side wall of said condensing tank (110), both ends of said cooling tank (310) being connected to said condensing tank (110) by connecting pipes (320).
  5. 5. A perfluoropolyether distillation process high efficiency condensing apparatus as defined in claim 4, wherein said cooling cycle assembly further comprises a temperature sensor (340), said temperature sensor (340) being mounted on an inner wall of said condensing tank (110).
  6. 6. The high-efficiency condensing apparatus for a perfluoropolyether distillation process as set forth in claim 5, wherein a refrigerating mechanism is disposed in said cooling tank (310), a circulating pump (330) is installed at one end of said cooling tank (310), and said circulating pump (330) is connected to one of said sets of connecting pipes (320).
  7. 7. A perfluoropolyether distillation process high efficiency condensing apparatus as defined in claim 6, wherein said cooling means comprises a semiconductor cooling fin mounted on an inner wall of one side of a cooling tank (310).

Description

High-efficient condensing equipment of perfluoropolyether distillation process Technical Field The utility model belongs to the technical field of distillation gas condensation, and particularly relates to a high-efficiency condensing device for a perfluoropolyether distillation process. Background The perfluoropolyether is used as a high-performance synthetic lubricating oil and has wide application in the fields of aerospace, semiconductors, chemical industry and the like. In the production process of perfluoropolyether, distillation is an important link of separation and purification, and a condensing device is used as a key part of a distillation system, and the performance of the condensing device directly influences the recovery rate and the product quality of the perfluoropolyether. According to the prior art, the patent application number is CN202321185288.5, a cooling device for extracting perfluoropolyether liquid is disclosed, the cooling device comprises a water cooling tank, a water inlet pipe, a water outlet pipe and a condensing assembly, the condensing assembly is arranged in the water cooling tank, the condensing assembly comprises a pair of split pipes and a plurality of cooling pipes, and the cooling pipes are fixedly connected between the two split pipes. Through with the perfluoropolyether liquid distillation gas after letting in the shunt tubes air current respectively get into a plurality of cooling tubes in, the distillation gas in a plurality of cooling tubes is simultaneously by dispersed cooling, has increased cooling area, has greatly improved cooling efficiency, and overall structure is compact, and occupation space is little, easy to assemble and maintenance. However, the cooling device for extracting the perfluoropolyether liquid still has the following defects: The device does not normally have the gas recovery function, when distillation gas is not completely condensed in the cooling pipe, a small amount of uncondensed gas directly enters the collecting pipeline, and the uncondensed gas is directly discharged without recovery, so that not only is the raw material loss increased, but also the production cost is increased, and the environment is possibly polluted. Therefore, there is a need to provide an efficient condensing device for the distillation process of perfluoropolyether to solve the above problems. Disclosure of utility model The utility model aims to provide an efficient condensing device for a perfluoropolyether distillation process, which is characterized in that by arranging a gas return assembly, when distillation steam is not completely condensed in the condensing assembly, uncondensed gas can flow back to an air inlet pipe from a liquid outlet pipe through a gas return pipe, so that the uncondensed gas can be recycled. The method has the advantages of avoiding raw material loss caused by direct discharge of uncondensed gas, effectively reducing production cost, reducing pollution to the environment possibly caused by the discharge of uncondensed gas, meeting the environmental protection requirement and solving the problems in the background technology. The efficient condensing device for the perfluoropolyether distillation process comprises a condensing box body, wherein a condensing assembly for cooling distilled steam is arranged in the condensing box body, a cooling circulation assembly for keeping the condensing assembly in a low-temperature state is arranged on the side wall of the condensing box body, an air inlet pipe is arranged at one end of the condensing box body, a liquid outlet pipe is arranged at the other end of the condensing box body, and an air return assembly for recycling uncondensed gas is arranged on the liquid outlet pipe; the air return assembly comprises an air return pipe, one end of the air return pipe is arranged on the liquid outlet pipe, and the other end of the air return pipe is arranged on the air inlet pipe. Further, a one-way valve is arranged in the air return pipe, and the one-way valve is positioned at one end of the air return pipe, which is close to the air inlet pipe. Further, the condensing assembly comprises a condensing pipe and a cooling medium, the condensing pipe is arranged in the condensing box body, two ends of the condensing pipe are respectively connected to the air inlet pipe and the liquid outlet pipe, the condensing pipe is in a spiral structure, and the cooling medium is arranged in the condensing box body. Further, the cooling circulation assembly comprises a cooling box, the cooling box is arranged on the side wall of the condensing box body, and two ends of the cooling box are connected with the condensing box body through connecting pipes. Further, the cooling circulation assembly further comprises a temperature sensor, and the temperature sensor is mounted on the inner wall of the condensing box body. Further, a refrigerating mechanism is arranged in the cooling box, a circulating pump is arranged