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CN-121988058-A - Intelligent separation device for rectifying aromatic hydrocarbon solvent

CN121988058ACN 121988058 ACN121988058 ACN 121988058ACN-121988058-A

Abstract

The invention relates to the technical field of rectification and discloses an intelligent separation device for rectifying aromatic hydrocarbon solvents, which comprises a rectifying tower, wherein the bottom of the rectifying tower is connected with a reboiler, a multichannel gas phase diversion mechanism is connected to the top of the rectifying tower and is connected with a condenser through the multichannel gas phase diversion mechanism, the multichannel gas phase diversion mechanism comprises a multichannel diversion component, a closing-opening component and a cleaning component, the closing-opening component and the cleaning component are arranged on the multichannel diversion component, and the multichannel gas phase diversion mechanism is arranged and can adjust the conduction or closing state of a specified gas phase flow channel in the multichannel gas phase diversion mechanism according to the using time length or detection data, so that the stability of gas phase flow can be kept all the time, the closed channel can be cleaned with high efficiency, the inner wall of the used channel can be cleaned on the premise of ensuring the continuous flow of the gas phase, the product loss rate can be effectively reduced, and the production benefit can be improved.

Inventors

  • LIN ZHONGYING
  • LIU SHIQING
  • LI HUI

Assignees

  • 茂名市鸿信精细化工有限公司

Dates

Publication Date
20260508
Application Date
20260306

Claims (10)

  1. 1. An intelligent separation device for rectifying aromatic hydrocarbon solvent, which is characterized by comprising: The device comprises a rectifying tower (1), wherein the bottom of the rectifying tower (1) is connected with a reboiler; The multi-channel gas-phase diversion mechanism (2), the multi-channel gas-phase diversion mechanism (2) is connected to the top of the rectifying tower (1), and the rectifying tower (1) is connected with the condenser through the multi-channel gas-phase diversion mechanism (2); The multi-channel gas-phase flow guiding mechanism (2) comprises a multi-channel flow guiding component, a closing and opening component and a cleaning component, wherein the closing and opening component and the cleaning component are arranged on the multi-channel flow guiding component, the rectifying tower (1) is communicated with the condenser through a set channel in the multi-channel flow guiding component, the closing and opening component is used for adjusting the set channel to be in a closed or starting state, and the cleaning component is used for cleaning the set channel in the closed state.
  2. 2. The intelligent separation device for rectifying aromatic hydrocarbon solvent according to claim 1, wherein the multi-channel flow guiding component comprises a main pipe (201) connected to the rectifying tower (1), a steering connecting pipe (202) connected to the other end of the main pipe (201), a first tee pipe (203) connected to the other end of the steering connecting pipe (202), a second tee pipe (204) symmetrically arranged with the first tee pipe (203), and two flow guiding pipes (205) connected between the first tee pipe (203) and the second tee pipe (204), the two flow guiding pipes (205) are symmetrically arranged, one ends of the two flow guiding pipes (205) are respectively connected with the remaining two ports of the first tee pipe (203), the other ends of the two flow guiding pipes (205) are respectively connected with two ports of the second tee pipe (204), and the remaining one port of the second tee pipe (204) is connected with the condenser.
  3. 3. The intelligent separation device for rectifying an aromatic hydrocarbon solvent according to claim 2, wherein the closing and opening assembly comprises two first electric control valves (206) arranged on a first tee pipe (203) and two second electric control valves (208) arranged on a second tee pipe (204), the two first electric control valves (206) are respectively arranged at the remaining two ports of the first tee pipe (203), and the two second electric control valves (208) are respectively arranged on two ports of the second tee pipe (204).
  4. 4. The intelligent separation device for rectifying an aromatic hydrocarbon solvent according to claim 3, wherein the cleaning assembly comprises two inlet pipes (207) arranged on the first tee pipe (203) and two outlet pipes (209) arranged on the second tee pipe (204), the two inlet pipes (207) are respectively arranged at positions, close to the first electric control valve (206), on the remaining two ports of the first tee pipe (203), and the two outlet pipes (209) are respectively arranged at positions, close to the second electric control valve (208), on the two ports of the second tee pipe (204).
  5. 5. The intelligent separation device for rectifying aromatic hydrocarbon solvent according to claim 4, wherein a telescopic quick-filling and slow-releasing mechanism (3) is connected between the other end of the flow guide pipe (205) and the second three-way pipe (204), the telescopic quick-filling and slow-releasing mechanism (3) comprises a telescopic unidirectional pumping assembly and an expansion assembly arranged on the second three-way pipe (204), the flow guide pipe (205) is communicated with the second three-way pipe (204) through the telescopic unidirectional pumping assembly, and the expansion assembly is communicated with the outside through the unidirectional pumping assembly.
  6. 6. The intelligent separation device for rectifying aromatic hydrocarbon solvent according to claim 5, wherein the telescopic unidirectional pumping assembly comprises a first flange plate (301), a second flange plate (304) which is arranged in parallel with the first flange plate (301), a first telescopic pipe (302) and a second telescopic pipe (303) which are connected between the first flange plate (301) and the second flange plate (304), a first channel (305) which is arranged on the first flange plate (301), a unidirectional air inlet piece (306) which is connected on the inner wall of the first channel (305), a second channel (307) and a fifth channel (310) which are arranged on the second flange plate (304), and a unidirectional air outlet piece (311) which is connected on the inner wall of the fifth channel (310), wherein a pumping chamber is formed between the first flange plate (301), the first telescopic pipe (302), the second telescopic pipe (303) and the second flange plate (304), two ends of the first channel (305) are respectively communicated with the outside and the pumping chamber, two ends of the second channel (307) are respectively communicated with the expansion assembly and the pumping chamber, two ends of the fifth channel (310) are respectively communicated with the expansion assembly and the fifth channel (310) and the unidirectional air inlet piece (311) which can be used for limiting the flow of air from the outside into the first channel (310) only through the unidirectional pumping assembly, the first flange plate (301) is fixedly connected with the flow guide pipe (205), and the second flange plate (304) is detachably connected with the second three-way pipe (204).
  7. 7. The intelligent separation device for rectifying aromatic hydrocarbon solvent according to claim 6, wherein the one-way air inlet piece (306) comprises a first annular plate connected to the inner wall of the first channel (305) and a first plastic sealing piece connected to one end of the first annular plate close to the pumping chamber, wherein the first plastic sealing piece covers a round hole in the first annular plate, only one side area of the first plastic sealing piece is connected with the first annular plate, the one-way air outlet piece (311) comprises a second annular plate connected to the inner wall of the fifth channel (310) and a second plastic sealing piece connected to one end of the second annular plate close to the outside, the second plastic sealing piece covers the round hole in the second annular plate, only one side area of the second plastic sealing piece is connected with the second annular plate, and the diameter of the round hole in the first annular plate is larger than that in the second annular plate.
  8. 8. The intelligent separation device for rectifying an aromatic hydrocarbon solvent according to claim 7, wherein the expansion assembly comprises a channel III (308) and a channel IV (309) which are arranged on the inner wall of the tee pipe II (204), a ring groove arranged on the inner wall of the tee pipe II (204), and an annular bag body (312) connected in the ring groove, two ends of the channel III (308) are respectively communicated with the channel II (307) and the annular bag body (312), two ends of the channel IV (309) are respectively communicated with the channel V (310) and the annular bag body (312), and when the annular bag body (312) is in an initial state, the inner diameter of the annular bag body is the same as that of the tee pipe II (204).
  9. 9. The intelligent separation device for rectifying an aromatic hydrocarbon solvent according to claim 8, wherein a telescopic auxiliary mechanism (4) is connected between one end of the flow guide pipe (205) and the first tee pipe (203), the telescopic auxiliary mechanism (4) comprises a sixth channel (405), a seventh channel (406) which is arranged in parallel with the sixth channel (405), a third telescopic pipe (402) and a fourth telescopic pipe (403) which are connected between the sixth channel (405) and the seventh channel (406), a sixth channel (405) which is arranged on the third flange (401) and a seventh channel (406) which is arranged on the fourth flange (404), a sealing chamber is formed among the third flange (401), the third telescopic pipe (402), the fourth telescopic pipe (403) and the fourth flange (404), and two ends of the sixth channel (405) and the seventh channel (406) are respectively communicated with the sealing chamber and the outside.
  10. 10. The intelligent separation device for rectifying aromatic hydrocarbon solvent according to claim 9, wherein a synchronous driving mechanism (5) is connected between the telescopic quick-charging and slow-discharging mechanism (3) and the telescopic auxiliary connecting mechanism (4), the synchronous driving mechanism (5) is used for driving the telescopic quick-charging and slow-discharging mechanism (3) and the telescopic auxiliary connecting mechanism (4) to stretch or shorten in the same direction, the synchronous driving mechanism (5) comprises a first connecting plate (501), a second connecting plate (503) symmetrically arranged with the first connecting plate (501), an electric telescopic rod (502) connected to the first connecting plate (501), a third connecting plate (504) connected to the other end of the electric telescopic rod (502) and an auxiliary telescopic rod (505) connected between the second connecting plate (503) and the third connecting plate (504), the first connecting plate (501) is fixedly connected with a second flange plate (304), the second connecting plate (503) is fixedly connected with a fourth flange plate (404), and two ends of the third connecting plate (504) are fixedly connected with a first flange plate (301) and a third flange plate (401) respectively.

Description

Intelligent separation device for rectifying aromatic hydrocarbon solvent Technical Field The invention relates to the technical field of rectification, in particular to an intelligent separation device for rectifying aromatic hydrocarbon solvent. Background Aromatic hydrocarbon solvents can be obtained by cracking heavy oil or petroleum, are important petrochemical products, and have wide application in the chemical industry due to their relatively high boiling point and relatively low molecular weight. When the aromatic hydrocarbon solvent is rectified, the adopted rectifying tower is in the actual use process, the gas phase diversion pipeline is positioned at the position close to the condenser, and the condition of advanced condensation is easy to occur due to the reduction of temperature gradient or abnormal performance of the heat preservation layer, so that trace colloid or impurities contained in the aromatic hydrocarbon solvent are attached to the gas phase diversion pipeline, the pipeline is blocked or corroded and the like due to long-time accumulation, the product loss rate is increased, the rectification process is required to be continuously carried out, and the economic benefit is reduced if the pipeline is cleaned by stopping the rectification process. Disclosure of Invention The invention aims to solve the problems and provide an intelligent separation device for rectifying aromatic hydrocarbon solvent. The invention provides an intelligent separation device for rectifying aromatic hydrocarbon solvent, which comprises: the bottom of the rectifying tower is connected with a reboiler; The multichannel gas phase diversion mechanism is connected to the top of the rectifying tower, and the rectifying tower is connected with the condenser through the multichannel gas phase diversion mechanism; The multi-channel gas-phase flow guiding mechanism comprises a multi-channel flow guiding component, a closing and opening component and a cleaning component, wherein the closing and opening component and the cleaning component are arranged on the multi-channel flow guiding component, the rectifying tower is communicated with the condenser through a set channel in the multi-channel flow guiding component, the closing and opening component is used for adjusting the set channel to be in a closed or starting state, and the cleaning component is used for cleaning the set channel in the closed state. As a further optimization scheme of the invention, the multichannel flow guiding component comprises a main pipeline connected to the rectifying tower, a steering connecting pipe connected to the other end of the main pipeline, a first tee pipe connected to the other end of the steering connecting pipe, a second tee pipe symmetrically arranged with the first tee pipe, and two flow guiding pipes connected between the first tee pipe and the second tee pipe, wherein the two flow guiding pipes are symmetrically arranged, one ends of the two flow guiding pipes are respectively connected with the remaining two ports of the first tee pipe, the other ends of the two flow guiding pipes are respectively connected with two ports of the second tee pipe, and the remaining one port of the second tee pipe is connected with the condenser. As a further optimization scheme of the invention, the closing and opening assembly comprises two electric control valves I arranged on a first three-way pipe and two electric control valves II arranged on a second three-way pipe, wherein the two electric control valves I are respectively arranged at the remaining two ports of the first three-way pipe, and the two electric control valves II are respectively arranged on two ports of the second three-way pipe. As a further optimization scheme of the invention, the cleaning assembly comprises two ingress pipes arranged on the first three-way pipe and two egress pipes arranged on the second three-way pipe, wherein the two ingress pipes are respectively arranged at the positions, close to the first electric control valve, of the remaining two ports of the first three-way pipe, and the two egress pipes are respectively arranged at the positions, close to the second electric control valve, of the two ports of the second three-way pipe. As a further optimization scheme of the invention, a telescopic quick-filling and slow-releasing mechanism is connected between the other end of the flow guide pipe and the second three-way pipe, the telescopic quick-filling and slow-releasing mechanism comprises a telescopic unidirectional pumping assembly and an expansion assembly arranged on the second three-way pipe, the flow guide pipe is communicated with the second three-way pipe through the telescopic unidirectional pumping assembly, and the expansion assembly is communicated with the outside through the unidirectional pumping assembly. As a further optimization scheme of the invention, the telescopic unidirectional pumping assembly comprises a first flange plate,