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CN-122015526-A - Heat exchanger for organic chemical waste gas treatment and application method thereof

CN122015526ACN 122015526 ACN122015526 ACN 122015526ACN-122015526-A

Abstract

The invention relates to the technical field of organic chemical waste gas treatment equipment, in particular to a heat exchanger for treating organic chemical waste gas and a use method thereof, comprising a heat exchanger shell, an air inlet and an air outlet, wherein a plurality of heat exchange components are uniformly distributed in the shell, the heat exchange assembly is characterized in that a triggering assembly is arranged on one side, close to the air inlet, of the heat exchange assembly, a changing assembly is arranged in the heat exchange assembly, a matching assembly is arranged on one side of the changing assembly, and an auxiliary assembly is arranged at the side end of the matching assembly. According to the invention, the heat exchange assembly and the change assembly work, so that the gas-liquid contact time can be adjusted according to the exhaust emission while the later maintenance is convenient, and the convenience and the heat exchange effect are greatly improved.

Inventors

  • GAO LIXIA

Assignees

  • 淄博德辰化工有限公司

Dates

Publication Date
20260512
Application Date
20260331

Claims (8)

  1. 1. A heat exchanger for treating organic chemical waste gas comprises a heat exchanger shell (1), an air inlet (2) and an air outlet (3); The heat exchanger is characterized in that a plurality of heat exchange assemblies (4) are uniformly distributed in the heat exchanger shell (1), a triggering assembly (5) is arranged on one side, close to the air inlet (2), of each heat exchange assembly (4), a changing assembly (6) is arranged in each heat exchange assembly (4), a matching assembly (8) is arranged on one side of each changing assembly (6), and an auxiliary assembly (9) is arranged at the side end of each matching assembly (8).
  2. 2. A heat exchanger for treatment of waste gases in organic chemical industry according to claim 1, characterized in that the heat exchange assembly (4) comprises a heat exchange tube (41) fixed inside the heat exchanger housing (1); The side end of the heat exchange tube (41) is connected with the inner wall of the heat exchanger shell (1), and a fixed tube (42) is arranged in the center of the heat exchange tube (41); The end part of the fixed pipe (42) is detachably connected with the inner wall of the heat exchange pipe (41); The fixing pipe (42) is made of PTFE fluoroplastic, and a plurality of annular sleeves (43) are equidistantly arranged on the fixing pipe (42); the annular sleeve (43) is embedded in a sliding groove (45) at the side end of the fixed pipe (42) through an arc-shaped block (44) and is in sliding fit with the fixed pipe; Sealing gaskets are laid on the outer sides of the two ends of the annular sleeve (43) and are positioned at the gap between the annular sleeve (43) and the fixed pipe (42); The outer side of one side of the fixed pipe (42) close to the air inlet (2) is fixedly connected with a main flow dividing blade (46) which is obliquely arranged.
  3. 3. A heat exchanger for treatment of waste gases in organic chemical industry according to claim 2, characterized in that the triggering assembly (5) comprises an air inlet chamber (51) arranged at the end of the heat exchanger housing (1); The air inlet cavity (51) is positioned below the air inlet (2), and a plurality of horn-shaped drainage covers (52) are uniformly distributed in the air inlet cavity (51); the side end of each drainage cover (52) is connected with the end part of one heat exchange tube (41) respectively; the end part of the heat exchange tube (41) positioned in the drainage cover (52) is arranged in an open mode.
  4. 4. A heat exchanger for treatment of organic chemical waste gas according to claim 3, characterized in that the variation assembly (6) comprises a control rod (61) located at the inner center of the fixed pipe (42); one end of the control rod (61) is positioned in the drainage cover (52) and is connected with the end part of the stress piece (62); The other end of the control rod (61) is positioned in the fixed pipe (42) and is sleeved with a guide frame (63), and the outer side of the guide frame (63) is symmetrically provided with a blocking block (64); The two blocking blocks (64) are positioned in a first annular groove (65) on the inner wall of the fixed pipe (42); the outer side of the blocking block (64) is in sliding fit with the inner wall of a first annular groove (65), and a second annular groove (66) is arranged on one side, away from the stress piece (62), of the first annular groove (65); the first annular groove (65) and the second annular groove (66) are communicated through symmetrically arranged communication grooves (67); the outer side of the blocking block (64) is in sliding fit with the inner wall of the communication groove (67).
  5. 5. The heat exchanger for treating organic chemical waste gas according to claim 4, wherein the control rod (61) is provided with a plurality of arc-shaped sliding grooves (68) at equal intervals, and the position of each arc-shaped sliding groove (68) corresponds to the position of one arc-shaped block (44); A moving groove (69) which is communicated with the end part of the arc chute (68); a vertically arranged moving rod (70) is arranged in the end part of the moving groove (69) far away from the arc-shaped sliding groove (68); the other end of the moving rod (70) is connected with a matching sleeve (71); The bottom of the moving rod (70) is in sliding fit with the inner walls of the moving groove (69) and the arc-shaped sliding groove (68); The matching sleeve (71) is arranged between the control rod (61) and the fixed pipe (42) in a sliding way; the outer side of the matching sleeve (71) is connected with the bottom of the arc-shaped block (44); the outer side of each annular sleeve (43) is provided with a sub-flow dividing blade (72) which is obliquely arranged; two adjacent ends of each two auxiliary flow dividing blades (72) are connected through a flexibly arranged connecting arc-shaped sheet (73); two ends of the connecting arc-shaped piece (73) are respectively hinged with two ends of the adjacent auxiliary flow dividing blade (72); wherein the end part of the auxiliary flow dividing blade (72) close to one side of the main flow dividing blade (46) is hinged with a connecting arc-shaped sheet (73), and the other end of the connecting arc-shaped sheet (73) is hinged with the end part of the main flow dividing blade (46); The main flow dividing blades (46), the connecting arc-shaped sheets (73) and the auxiliary flow dividing blades (72) form continuous spiral line flow grooves (74) in the heat exchange tube (41); The side ends of the main flow dividing blades (46), the connecting arc-shaped sheets (73) and the auxiliary flow dividing blades (72) are in sliding fit with the inner wall of the heat exchange tube (41).
  6. 6. A heat exchanger for treatment of waste gas in organic chemical industry according to claim 5, characterized in that the mating assembly (8) comprises a Laifu lever (81) arranged on one side of the second annular groove (66); the end part of the Laifu rod (81) is connected with the inner wall of the fixed pipe (42); the blessing rod (81) is positioned at the center of the control rod (61); A thread groove (82) matched with the control rod (61) is arranged on one side of the control rod (61) close to the blessing rod (81); the outer side of one end, far away from the air inlet (2), of the control rod (61) is rotationally connected with a chuck (83); The side end of the chuck (83) is movably connected with the inner wall of the fixed pipe (42) through a stress spring (84).
  7. 7. A heat exchanger for treating organic chemical waste gas according to claim 3, wherein the auxiliary assembly (9) comprises an expansion chamber (91) arranged at one end of the heat exchange tube (41) far away from the air inlet (2); A plurality of arc-shaped sealing gaskets (92) are arranged between the expansion cavity (91) and the inside of the heat exchange tube (41); A plurality of arc-shaped sealing gaskets (92) are combined to form a circle; The side end of the arc-shaped sealing gasket (92) is hinged with the inner wall of the heat exchange tube (41); the bottom of the heat exchange tube (41) is communicated with the air outlet (3) through an air duct (93).
  8. 8. A method of using a heat exchanger for organic chemical waste gas treatment according to any one of claims 1 to 7, comprising the steps of: S1, enabling waste gas to enter an air inlet cavity (51) through an air inlet (2), then enabling the waste gas to be shunted into a heat exchange tube (41) through a horn-shaped drainage cover (52), and enabling the gas to be commutated for multiple times in the flowing process through a spiral line flow groove (74) formed by a main shunt blade (46), a secondary shunt blade (72) and a connecting arc-shaped blade (73) in the heat exchange tube; S2, when the exhaust emission is increased, the stress piece (62) and the control rod (61) are driven to synchronously slide through the guide frame (63), the clamping block (64) is driven to enter the second annular groove (66) from the inside of the first annular groove (65) along the direction of the communication groove (67), the stress spring (84) is compressed through the chuck (83), when the moving rod (70) slides to the end part of the arc chute (68) along the moving groove (69), the thread groove (82) at the end part of the control rod (61) is embedded to the end part of the coming rod (81), the control rod (61) is enabled to rotate in the chuck (83) under the continuous action, the plurality of matching sleeves (71) are driven to synchronously move towards the direction of the main splitter blade (46) under the cooperation of the arc chute (68) and the moving rod (70), the plurality of arc blocks (44) are enabled to synchronously move towards the outer side of the fixed pipe (42) along the direction of the sliding groove (45), the plurality of auxiliary splitter blades (72) are driven to form a multi-angle steering path (74) under the action of the connecting piece (73), and the arc splitter blades (46) are enabled to form a more intensive steering path; S3, in the process of approaching, the auxiliary flow dividing blades (72) and the connecting arc-shaped sheets (73) which are originally positioned in the expansion cavity (91) move to the outer side of the expansion cavity (91) through the arc-shaped sealing gasket (92), the whole heat exchange path of the heat exchange assembly (4) is prolonged, waste gas after heat exchange is discharged from the air outlet (3) through the air duct (93), the collaborative propulsion of waste heat recovery and waste gas pretreatment is realized, and in the later maintenance, only the fixing pipe (42) is required to be detached from the heat exchange pipe (41), the main flow dividing blades (46), the auxiliary flow dividing blades (72) and the connecting arc-shaped sheets (73) are synchronously detached, so that dirt in the assembly can be comprehensively cleaned from the outside.

Description

Heat exchanger for organic chemical waste gas treatment and application method thereof Technical Field The invention relates to the technical field of organic chemical waste gas treatment equipment, in particular to a heat exchanger for organic chemical waste gas treatment and a use method thereof. Background In the existing waste gas treatment process, the heat exchanger is used as core equipment for waste heat recovery and medium adjustment, and the running state of the heat exchanger directly determines the waste gas treatment efficiency and the overall running cost, so that the heat exchanger is a key link in the treatment process of VOCs in the chemical industry. In the prior art, a heat exchanger mostly adopts a twisted pipeline structure, long-time contact between waste gas and liquid in a machine body is realized by prolonging a gas flow path, so that the heat exchange process is finished, but the structure has obvious defects that firstly, a large amount of dust contained in the waste gas is easy to remain on the inner wall of a twisted pipeline to form dirt, the interior of the pipeline is difficult to clean thoroughly during maintenance, the mechanical maintenance efficiency is low, the convenience is insufficient, secondly, when the emission amount of the waste gas is increased, the heat exchange time of the waste gas in a shell cannot be flexibly adjusted according to the actual emission amount, the gas-liquid contact is easy to be uneven, the heat exchange effect is poor, the waste heat recovery efficiency is influenced, and the operation cost is increased. Disclosure of Invention The invention aims to provide a heat exchanger for treating organic chemical waste gas and a use method thereof, so as to solve the problems in the background art. In order to achieve the purpose, the heat exchanger for treating the organic chemical waste gas comprises a heat exchanger shell, an air inlet and an air outlet, wherein a plurality of heat exchange assemblies are uniformly distributed in the heat exchanger shell, a triggering assembly is arranged on one side, close to the air inlet, of each heat exchange assembly, a changing assembly is arranged in each heat exchange assembly, a matching assembly is arranged on one side of each changing assembly, and an auxiliary assembly is arranged at the side end of each matching assembly. Preferably, the heat exchange assembly comprises a heat exchange tube fixed inside the heat exchanger shell, the side ends of the heat exchange tube are connected with the inner wall of the heat exchanger shell, a fixed tube is arranged at the center of the inside of the heat exchange tube, the end part of the fixed tube is detachably connected with the inner wall of the heat exchange tube, the fixed tube is made of PTFE fluoroplastic, a plurality of annular sleeves are arranged on the fixed tube at equal intervals, the annular sleeves are embedded in sliding grooves of the side ends of the fixed tube through arc blocks and are in sliding fit with the sliding grooves, sealing gaskets are paved at the outer sides of the two ends of the annular sleeves and are located at the gap between the annular sleeves and the fixed tube, and a main flow dividing blade which is obliquely arranged is fixedly connected with the outer side of one side of the fixed tube, which is close to an air inlet. Preferably, the trigger assembly comprises an air inlet cavity arranged at the end part of the heat exchanger shell, the air inlet cavity is positioned below the air inlet, a plurality of horn-shaped drainage covers are uniformly distributed in the air inlet cavity, the side ends of each drainage cover are respectively connected with the end part of one heat exchange tube, and the end parts of the heat exchange tubes positioned in the drainage covers are in an open arrangement. Preferably, the change subassembly is including being located the control lever of the inside center department of fixed pipe, the one end of control lever is located the drainage cover and with the end connection of atress spare, the other end of control lever is located the fixed intraductal and outside cover is equipped with the guide frame, guide frame outside symmetry is equipped with the card movable block, two the card movable block is located the first ring channel of fixed intraductal wall, card movable block outside and first ring channel inner wall sliding fit, one side that the atress spare was kept away from to first ring channel is equipped with the second ring channel, the intercommunication through the intercommunication groove that the symmetry set up between first ring channel and the second ring channel, card movable block outside and intercommunication groove inner wall sliding fit. Preferably, a plurality of arc spout has been seted up to the equidistance on the control lever, every the position of arc spout corresponds with the position of an arc piece respectively, the shifting chute that the tip intercommun