Waste gas multi-stage treatment device for combined polyether production

Abstract

The utility model discloses a waste gas multi-stage treatment device for combined polyether production. The waste gas multi-stage treatment device comprises a dust removal mechanism and a driving motor mounted in the dust removal mechanism, a limiting mechanism is arranged on one side of the dust removal mechanism, and one end of the limiting mechanism is fixedly connected to one side of the alkali absorption chamber; the dust removal mechanism comprises a reaction kettle, and one side of the reaction kettle is fixedly connected with a breather pipe; wherein the end, away from the reaction kettle, of the ventilation pipe is fixedly connected with a dry type electrostatic dust collection box, one end of the dry type electrostatic dust collection box is fixedly connected with an air outlet pipe, and one end of the air outlet pipe is fixedly connected with the alkali absorption chamber; wherein a water absorption chamber is arranged on the side, away from the gas outlet pipe, of the alkali absorption chamber, an acid absorption chamber is arranged on the side, away from the alkali absorption chamber, of the water absorption chamber, accumulated dust can be rapidly cleaned through the dust removal mechanism, and therefore the dust collection capacity of the equipment is improved, and tail gas backflow can be avoided through the limiting mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, concretely for a kind of waste gas multistage treatment device for combined polyether production. BACKGROUND

[0002] Combined polyether is one of the main raw materials of polyurethane rigid foam, also known as white material, and is collectively referred to as black and white material with polymeric MDI, suitable for building insulation, cold, solar, water heater, cold storage, constant temperature warehouse, beer tank, refrigeration and other occasions requiring insulation.

[0003] Publication No. CN215388308U discloses a VOC waste gas treatment device for producing combined polyether, which realizes good filtration of waste gas through the filtration of the filter plate in the filter box and the multiple filtration of the photocatalytic plate in the catalytic box. The device improves the filtration efficiency of waste gas as a whole, and the filter plate prolongs the service life of the device. During the process, the waste gas filtered by the filter plate enters the water tank, where it is effectively filtered and purified by the microbial solution in the water tank. The liquid can be combined with the filtered gas, which can remove impurities from the gas and leave them in the microbial solution. The purified gas then enters the catalytic box through the auxiliary air pipe. The cleaning mechanism regularly cleans the impurities, i.e. dust, on the filter screen to ensure the subsequent processing effect of the device. However, the patent still has the following problems in actual use:

[0004] Although the VOC waste gas treatment device for producing combined polyether realizes good filtration of waste gas through the filtration of the filter plate in the filter box and the multiple filtration of the photocatalytic plate in the catalytic box, it is not convenient to clean the dust accumulated in the filter plate during the dust removal process, and the filter plate needs to be replaced regularly to ensure good dust removal effect of the device.

[0005] A waste gas multistage treatment device for combined polyether production is proposed to solve the problems mentioned above. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a waste gas multistage treatment device for combined polyether production to solve the problem that the current filter plate in the filter box and the multiple photocatalytic plate in the catalytic box realize good filtration of waste gas, but it is not convenient to clean the dust accumulated in the filter plate during the dust removal process, and the filter plate needs to be replaced regularly to ensure good dust removal effect of the device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a waste gas multistage treatment device for combined polyether production, comprising a dust removal mechanism and a driving motor installed inside the dust removal mechanism.

[0008] The dust removal mechanism is provided with a limiting mechanism on one side, and one end of the limiting mechanism is fixedly connected to one side of the alkali absorption chamber;

[0009] Further comprising:

[0010] The dust removal mechanism comprises a reaction kettle, and a ventilation pipe is fixedly connected to one side of the reaction kettle;

[0011] Wherein, one end of the ventilation pipe away from the reaction kettle is fixedly connected with a dry electrostatic dust removal box, one end of the dry electrostatic dust removal box is fixedly connected with an air outlet pipe, and one end of the air outlet pipe is fixedly connected with the alkali absorption chamber.

[0012] Wherein, the alkali absorption chamber is provided with a water absorption chamber on the side away from the air outlet pipe, and the water absorption chamber is provided with an acid absorption chamber on the side away from the alkali absorption chamber.

[0013] Preferably, a plurality of supports are fixedly connected to the top side inside the dry electrostatic dust removal box, the number of supports is four, and the supports are uniformly distributed on the top side inside the dry electrostatic dust removal box, the bottom side of the support is fixedly connected with a first top plate, the bottom side of the first top plate is fixedly connected with a plurality of anode plates, the number of anode plates is one hundred and thirty-two, and the anode plates are uniformly distributed on the bottom side of the first top plate.

[0014] Preferably, the anode plate is provided with a cathode rod on one side, the top end of the cathode rod penetrates through the first top plate and is fixedly connected with a second top plate, the dry electrostatic dust removal box is symmetrically provided with a limiting slot on both sides close to the second top plate, a first spring is fixedly connected inside each of the two limiting slots, one end of the first spring is fixedly connected with the second top plate, and a first frame is arranged at the center position of the top of the second top plate.

[0015] Preferably, the top end of the first frame is fixedly connected with the dry electrostatic dust removal box, a support seat is fixedly connected to the top of the first frame, the bottom side of the support seat is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a disc, a groove is formed in the inside of one side of the disc, and a sliding block is slidably connected in the inside of the groove.

[0016] Preferably, a first connecting rod is rotatably connected to the outside of the sliding block, a second connecting rod is rotatably connected to the end of the first connecting rod away from the sliding block, the outside of the second connecting rod is slidably connected with the first frame, and a second frame is fixedly connected below the dry electrostatic dust removal box close to the groove.

[0017] Preferably, the limiting mechanism comprises a connecting pipe, one end of the connecting pipe is fixedly connected with the alkali absorption chamber, the other end of the connecting pipe is fixedly connected with the water absorption chamber, a limiting block is threadedly connected inside the end of the connecting pipe close to the alkali absorption chamber, and a through hole is formed in the inside of the limiting block.

[0018] Preferably, one end of the through hole is fixedly connected with a fixed ring, one side of the fixed ring is connected with a baffle in a matched mode, one side of the baffle is fixedly connected with a connecting column, the outer side of one end of the connecting column is clamped with a sealing ring, the outer side of the sealing ring is connected with a limiting block in a matched mode, and the other end of the connecting column is sleeved with a second spring.

[0019] Compared with the prior art, the waste gas multistage treatment device for combined polyether production has the advantages that: the dust accumulated can be quickly cleaned through the dust removal mechanism, thereby improving the dust collection capacity of the equipment, and the tail gas backflow can be avoided through the limiting mechanism, thereby improving the purification efficiency of the device.

[0020] 1. The dust accumulated can be quickly cleaned through the dust removal mechanism, thereby improving the dust collection capacity of the equipment, when the anode plate and the cathode rod input high-voltage direct current, the electrode space generates positive and negative electrons, and acts on the surface of the flue gas particles passing through the electrostatic field, and under the action of the electric field force, moves to the opposite electrode and deposits on the electrode, thereby achieving the purpose of dust collection, the driving motor drives the disc to rotate, thereby moving the sliding block in the groove, that is, the first connecting rod can be driven to rotate, and at the same time, the limiting action of the first frame on the second connecting rod can convert the rotary force of the first connecting rod into the linear force of the second connecting rod, thereby being able to knock and shake the anode plate and the cathode rod, and when the knocking hammer periodically knocks the two-stage device, the dust adhered thereto is shaken off and falls into the ash bucket below and is comprehensively utilized through the ash discharge device;

[0021] 2. The tail gas backflow can be avoided through the limiting mechanism, thereby improving the purification efficiency of the device, and the cooperation between the sealing ring, the baffle, the second spring and the connecting column can realize one-way flow of the tail gas in the connecting pipe and avoid the backflow of the tail gas. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of the utility model;

[0023] Figure 2 It is a whole structure schematic view of the utility model Figure 1 It is an internal structure schematic view of the dry electrostatic precipitation box in the utility model;

[0024] Figure 3 It is a whole structure schematic view of the utility model Figure 2 It is a side view structure schematic view of the first top plate in the utility model;

[0025] Figure 4 It is a whole structure schematic view of the utility model Figure 1 It is an enlarged structure schematic view of the limiting mechanism in the utility model;

[0026] Figure 5 It is a whole structure schematic view of the utility modelFigure 2 Enlarged structural schematic view at A;

[0027] Figure 6 The utility model discloses Figure 2 Enlarged structural schematic view at B;

[0028] Figure 7 The utility model discloses Figure 2 Enlarged structural schematic view at C.

[0029] In the drawing: 1, dust removal mechanism;101, reaction kettle;102, air pipe;103, dry type electrostatic dust removal box;104, gas outlet pipe;105, alkali absorption chamber;106, water absorption chamber;107, acid absorption chamber;108, support;109, first roof;110, anode plate;111, cathode stick;112, second roof;113, limit groove;114, first spring;115, first frame;116, support seat;117, drive motor;118, disc;119, recess;120, sliding block;121, first connecting rod;122, second connecting rod;123, second frame;2, limiting mechanism;201, connecting pipe;202, limiting block;203, through hole;204, fixed ring;205, baffle;206, connecting column;207, sealing ring;208, second spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0031] Please refer to Figures 1-7 The utility model provides technical scheme: a kind of waste gas multistage processing device for combined polyether production, including dust removal mechanism 1 and drive motor 117 installed in dust removal mechanism 1 interior;The side of dust removal mechanism 1 is provided with limiting mechanism 2, and one end of limiting mechanism 2 is fixedly connected to the side of alkali absorption chamber 105;Dust removal mechanism 1 includes reaction kettle 101, and the side of reaction kettle 101 is fixedly connected with air pipe 102;The end of air pipe 102 away from reaction kettle 101 is fixedly connected with dry type electrostatic dust removal box 103, and one end of dry type electrostatic dust removal box 103 is fixedly connected with gas outlet pipe 104, and one end of gas outlet pipe 104 is fixedly connected with alkali absorption chamber 105;By being provided with dry type electrostatic dust removal box 103, dust can be absorbed;

[0032] The water absorption chamber 106 is provided on the side away from the alkali absorption chamber 105 of the gas outlet pipe 104, and the acid absorption chamber 107 is provided on the side away from the water absorption chamber 106 of the alkali absorption chamber 105; the alkali absorption chamber 105 and the water absorption chamber 106 are connected through a connecting pipe 201, and the water absorption chamber 106 and the acid absorption chamber 107 are also connected through a connecting pipe 201;

[0033] A plurality of supports 108 are fixedly connected to the top side of the interior of the dry electrostatic precipitation box 103, the number of the supports 108 is four, and the supports 108 are uniformly distributed on the top side of the interior of the dry electrostatic precipitation box 103; a first top plate 109 is fixedly connected to the bottom side of the support 108, and a plurality of anode plates 110 are fixedly connected to the bottom side of the first top plate 109; the number of the anode plates 110 is one hundred and thirty-two, and the anode plates 110 are uniformly distributed on the bottom side of the first top plate 109; the position of the anode plate 110 can be limited by the support 108; the one hundred and thirty-two anode plates 110 can form twelve columns, each column has eleven anode plates, and the anode plates are uniformly distributed in the interior of the dry electrostatic precipitation box 103;

[0034] A cathode rod 111 is arranged on one side of the anode plate 110; the top end of the cathode rod 111 penetrates through the first top plate 109 and is fixedly connected with a second top plate 112; the dry electrostatic precipitation box 103 is symmetrically provided with a limiting groove 113 on both sides close to the second top plate 112; a first spring 114 is fixedly connected in the limiting groove 113; one end of the first spring 114 is fixedly connected with the second top plate 112; a first frame 115 is arranged at the center position of the top of the second top plate 112; the second top plate 112 has a tendency to vibrate up and down by the first spring 114;

[0035] The top end of the first frame 115 is fixedly connected with the dry electrostatic precipitation box 103; a support seat 116 is fixedly connected to the top of the first frame 115; the bottom side of the support seat 116 is fixedly connected with a driving motor 117; a disc 118 is fixedly connected to the output end of the driving motor 117; a groove 119 is arranged in the interior of one side of the disc 118; a sliding block 120 is slidably connected in the interior of the groove 119; a first connecting rod 121 is rotatably connected to the outer side of the sliding block 120; a second connecting rod 122 is rotatably connected to one end of the first connecting rod 121 away from the sliding block 120; the outer side of the second connecting rod 122 is slidably connected with the first frame 115; a second frame 123 is fixedly connected below the dry electrostatic precipitation box 103 close to the groove 119; the internal structure of the second frame 123 is consistent with the internal structure of the first frame 115;

[0036] The limiting mechanism 2 includes a connecting pipe 201, one end of the connecting pipe 201 is fixedly connected with the alkali absorption chamber 105, the other end of the connecting pipe 201 is fixedly connected with the water absorption chamber 106, the connecting pipe 201 is internally threadedly connected with a limiting block 202 near the one end of the alkali absorption chamber 105, the limiting block 202 is internally provided with a through hole 203, and the connecting pipe 201 is arranged to facilitate the communication in the device;

[0037] One end of the through hole 203 is fixedly connected with a fixed ring 204, one side of the fixed ring 204 is connected with a baffle 205 in a matched mode, one side of the baffle 205 is fixedly connected with a connecting column 206, the outer side of one end of the connecting column 206 is clampedly connected with a sealing ring 207, the outer side of the sealing ring 207 is connected with the limiting block 202 in a matched mode, the other end of the connecting column 206 is sleeved with a second spring 208, and the sealing ring 207, the baffle 205, the second spring 208 and the connecting column 206 are matched to realize one-way circulation of the tail gas in the connecting pipe 201.

[0038] Working principle: before using the waste gas multistage treatment device for combined polyether production, the overall situation of the device needs to be checked to determine whether the device can normally work, according to Figure 1 Figure 7 As shown, first, the tail gas generated by the reaction kettle 101 enters the dry electrostatic dust removal box 103 through the air pipe 102, when the anode plate 110 and the cathode rod 111 input high-voltage direct current, the electrode space generates positive and negative electrons, and acts on the surface of the flue gas particles passing through the electrostatic field, and under the action of the electric field force, moves to the opposite electrode and deposits on the electrode, so as to achieve the purpose of dust collection.

[0039] Secondly, the driving motor 117 is started to drive the disc 118 to rotate, so that the sliding block 120 moves in the groove 119, that is, the first connecting rod 121 can be driven to rotate, and at the same time, the limiting action of the first frame 115 on the second connecting rod 122 can convert the rotary force of the first connecting rod 121 into the linear force of the second connecting rod 122, so as to knock and shake the anode plate 110 and the cathode rod 111, and when the dust adhered to the two-stage device is knocked by the periodic knocking of the knocking hammer, the dust falls into the ash bucket below and is discharged to the ash storage for comprehensive utilization.

[0040] ​Finally, the tail gas after dedusting passes through the alkali absorption chamber 105, the water absorption chamber 106 and the acid absorption chamber 107 in turn, and the cooperation among the sealing ring 207, the baffle 205, the second spring 208 and the connecting column 206 can realize the one-way flow of the tail gas in the connecting pipe 201, the tail gas can absorb the acidic gas such as carbon dioxide and sulfur dioxide in the tail gas when passing through the alkali absorption chamber 105, the acidic gas is converted into salt and water by chemical reaction with the alkali solution, so that the purpose of removing the acidic gas is achieved, the tail gas can absorb the water-soluble gas such as ammonia when passing through the water absorption chamber 106, the water-soluble gas is dissolved in water when contacting with water, so that the absorption of the gas is realized, the tail gas can absorb the alkaline gas such as ammonia when passing through the acid absorption chamber 107, the alkaline gas is converted into salt and water by neutralization reaction with the acid solution, so that the alkaline gas is removed.

[0041] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multi-stage waste gas treatment device for the production of composite polyethers, comprising a dust removal mechanism (1) and a drive motor (117) installed inside the dust removal mechanism (1); A limiting mechanism (2) is provided on one side of the dust removal mechanism (1), and one end of the limiting mechanism (2) is fixedly connected to one side of the alkali absorption chamber (105). Its features are, Also includes: The dust removal mechanism (1) includes a reaction vessel (101), and a vent pipe (102) is fixedly connected to one side of the reaction vessel (101); Among them, the end of the vent pipe (102) away from the reactor (101) is fixedly connected to a dry electrostatic precipitator (103), the end of the dry electrostatic precipitator (103) is fixedly connected to an outlet pipe (104), and the end of the outlet pipe (104) is fixedly connected to the alkali absorption chamber (105). Among them, a water absorption chamber (106) is provided on the side of the alkali absorption chamber (105) away from the gas outlet pipe (104), and an acid absorption chamber (107) is provided on the side of the water absorption chamber (106) away from the alkali absorption chamber (105).

2. The multi-stage waste gas treatment device for the production of composite polyethers according to claim 1, characterized in that: The top side of the dry electrostatic precipitator (103) is fixedly connected to a number of supports (108). There are four supports (108), and the supports (108) are evenly distributed on the top side of the dry electrostatic precipitator (103). The bottom side of the supports (108) is fixedly connected to a first top plate (109). The bottom side of the first top plate (109) is fixedly connected to a number of anode plates (110). There are one hundred and thirty-two anode plates (110), and the anode plates (110) are evenly distributed on the bottom side of the first top plate (109).

3. A multi-stage waste gas treatment device for the production of composite polyethers according to claim 2, characterized in that: A cathode rod (111) is provided on one side of the anode plate (110). The top end of the cathode rod (111) passes through the first top plate (109) and is fixedly connected to the second top plate (112). The dry electrostatic precipitator (103) has symmetrically opened limiting grooves (113) on both sides near the second top plate (112). A first spring (114) is fixedly connected inside both limiting grooves (113). One end of the first spring (114) is fixedly connected to the second top plate (112). A first frame (115) is provided at the center of the top of the second top plate (112).

4. A multi-stage waste gas treatment device for the production of composite polyethers according to claim 3, characterized in that: The top of the first frame (115) is fixedly connected to the dry electrostatic dust collector (103). A support base (116) is fixedly connected to the top of the first frame (115). The bottom side of the support base (116) is fixedly connected to the drive motor (117). A disc (118) is fixedly connected to the output end of the drive motor (117). A groove (119) is provided inside one side of the disc (118). A slider (120) is slidably connected inside the groove (119).

5. A multi-stage waste gas treatment device for the production of composite polyethers according to claim 4, characterized in that: The outer side of the slider (120) is rotatably connected to a first connecting rod (121), and the end of the first connecting rod (121) away from the slider (120) is rotatably connected to a second connecting rod (122). The outer side of the second connecting rod (122) is slidably connected to the first frame (115). The dry electrostatic dust collector (103) is fixedly connected to a second frame (123) below the groove (119).

6. A multi-stage waste gas treatment device for the production of composite polyethers according to claim 1, characterized in that: The limiting mechanism (2) includes a connecting pipe (201), one end of which is fixedly connected to the alkali absorption chamber (105), and the other end of which is fixedly connected to the water absorption chamber (106). A limiting block (202) is internally threaded to the end of the connecting pipe (201) near the alkali absorption chamber (105), and a through hole (203) is provided inside the limiting block (202).

7. A multi-stage waste gas treatment device for the production of composite polyethers according to claim 6, characterized in that: A fixing ring (204) is fixedly connected to one end of the through hole (203). A baffle (205) is attached to one side of the fixing ring (204). A connecting post (206) is fixedly connected to one side of the baffle (205). A sealing ring (207) is engaged with the outer side of one end of the connecting post (206). The outer side of the sealing ring (207) is attached to the limiting block (202). A second spring (208) is sleeved on the other end of the connecting post (206).

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