Waste gas low-temperature degradation mechanism for waste incineration

Abstract

The utility model discloses a waste gas low-temperature degradation mechanism for waste incineration, which comprises a reaction tank, a waste outlet pipe is arranged at the bottom of the reaction tank, a catalyst inlet pipe, a flue gas inlet pipe and a flue gas outlet pipe are respectively connected outside the reaction tank, a discharge tank and an air pump are respectively connected outside the catalyst inlet pipe, and the discharge tank and the air pump are respectively connected outside the flue gas outlet pipe. The catalyst inlet pipe and the reaction tank are connected with each other through a mounting assembly, and a nozzle is detachably connected to the mounting assembly; the mounting assembly comprises a sleeve, one end of the sleeve is arranged outside the catalyst inlet pipe in a sleeving manner, the other end of the sleeve extends to the outer side of the catalyst inlet pipe and is connected with a sealing pipe, the sleeve and the sealing pipe are arranged in an inner and outer nesting manner, one end of the sealing pipe is fixedly connected with the reaction tank, and the sleeve on the inner side of the sealing pipe is connected with a mounting plate; the end part of the nozzle is detachably connected to the mounting plate, and a gap for dismounting the nozzle is reserved between the sealing pipe and the catalyst inlet pipe. According to the utility model, the difficulty of assembling, disassembling and cleaning the nozzle by operators can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste gas treatment mechanism, especially a waste gas low-temperature degradation mechanism for garbage incineration. BACKGROUND

[0002] Garbage can produce high-temperature flue gas containing dioxin in the incineration process, and the current treatment method of dioxin in high-temperature flue gas is generally low-temperature degradation method, that is, the high-temperature flue gas is rapidly cooled in a short time, so that the dioxin in the flue gas produces pyrolysis reaction in the cooling process, thereby decomposing into a series of organic matter and gas products, such as CO, CO2, HCI, H20, coke, ash and other substances. At the same time, manufacturers will also add catalysts in the pyrolysis process of flue gas, so as to accelerate the reaction rate of dioxin by using catalysts and improve the decomposition efficiency. After pyrolysis, the flue gas continues to flow to the next station for subsequent treatment through the gas pipe, and the solid waste produced by pyrolysis is discharged from the bottom of the reaction tank and collected by the operator.

[0003] On the basis of the above, in order to improve the catalytic effect of catalyst on dioxin in flue gas, manufacturers will also use atomizing nozzles, sand blasting nozzles and other tools to spray the catalyst, so as to improve the uniformity and coverage range of the catalyst in the reaction tank. However, since the flue gas contains different types of impurities such as tar and fly ash, and the nozzle cannot be in a continuous spraying state during the flue gas treatment process, the impurities in the flue gas are easy to adhere to the surface of the nozzle and cause blockage, thereby reducing the subsequent spraying effect of the nozzle. On the other hand, in order to improve the overall sealing performance of the device and prevent the leakage of flue gas, the nozzle is directly fixed to the inner side of the reaction tank or pipeline after installation, which makes it difficult for manufacturers to disassemble and clean the nozzle without damaging the equipment structure when the nozzle is blocked during use, further reducing the spraying effect of the nozzle.

[0004] Therefore, the existing waste gas low-temperature degradation mechanism has the problem that the nozzle cannot be cleaned. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a waste gas low-temperature degradation mechanism for garbage incineration. It can reduce the difficulty of disassembling and cleaning the nozzle for the operator.

[0006] The utility model discloses a technical scheme: waste gas low temperature degradation mechanism for garbage incineration, including the reaction tank, the bottom of reaction tank is equipped with the waste pipe, and the outer portion of reaction tank is connected with catalyst inlet pipe, flue gas inlet pipe and flue gas outlet pipe respectively, and the heat exchanger is connected on flue gas inlet pipe, and the outer portion of catalyst inlet pipe is connected with discharge tank and air pump respectively, the mutual connection between catalyst inlet pipe and reaction tank is through the installation component, and the detachable connection of nozzle is established on the installation component, the installation component includes the sleeve, and one end of sleeve is sleeved in the outer portion of catalyst inlet pipe, and the other end of sleeve extends to the outside of catalyst inlet pipe and is connected with the sealed pipe, and the inside of sealed pipe is nested with sleeve, and one end of sealed pipe is fixedly connected with reaction tank, and the sleeve on the inside of sealed pipe is connected with mounting plate, and the end of nozzle is detachably connected on mounting plate, and the interval for taking out nozzle is left between sealed pipe and catalyst inlet pipe.

[0007] In the foregoing waste gas low temperature degradation mechanism for garbage incineration, one end of the sleeve is connected with the catalyst inlet pipe through a sealing ring, and the connection part of the sleeve is coated with sealing glue.

[0008] In the foregoing waste gas low temperature degradation mechanism for garbage incineration, the catalyst inlet pipe is connected with a waste discharge pipe at an end away from the sleeve, the end of the waste discharge pipe is connected with an air pump, the middle part of the waste discharge pipe is in communication with the waste pipe, a vertically downward collecting pipe is connected to the waste discharge pipe on the side of the waste pipe, and a waste box is connected to the lower end of the collecting pipe.

[0009] In the foregoing waste gas low temperature degradation mechanism for garbage incineration, the middle part of the waste discharge pipe forms a vertical drop pipe, the collecting pipe is located at the bottom of the drop pipe, and a filter screen is connected in the drop pipe.

[0010] In the foregoing waste gas low temperature degradation mechanism for garbage incineration, the outer portion of the catalyst inlet pipe is threadedly connected with a limiting bolt, and the end of the limiting bolt is in close contact with the end of the sleeve.

[0011] In the foregoing waste gas low temperature degradation mechanism for garbage incineration, a baffle is rotatably connected to the inner wall of the reaction tank on the inside of the sealed pipe, and the baffle is used for plugging the sealed pipe after the sleeve is pulled out.

[0012] Compared with the prior art, the utility model has the following characteristics:

[0013] (1) The utility model discloses a structure limitation through the installation component, so that the nozzle can be installed at the end of the catalyst inlet pipe and face the reaction tank through the sleeve, and the nozzle is sealed by the sealed pipe and the catalyst inlet pipe, so that the nozzle is separated from the external environment, preventing the overflow of flue gas; when the nozzle needs to be taken out, the operator can pull out the sleeve from the sealed pipe horizontally, and the nozzle is moved to the interval between the sealed pipe and the catalyst inlet pipe, so that the operator can manually take out and clean the sleeve.

[0014] (2)On the basis of the above, through the setting of the baffle, it can also be rotated to the hanging state after the sleeve is pulled out and block the sealing pipe, so as to prevent the waste gas in the reaction tank from overflowing outside during the disassembly and assembly of the nozzle, and improve the environmental protection effect of the utility model;

[0015] (3) Through the cooperation of the connection structure of the exhaust pipe, the air pump and the exhaust pipe, the air pump can also blow the bottom of the exhaust pipe when blowing, so that when the waste material is discharged from the bottom of the exhaust pipe, it can fall into the waste material box under the blowing action of the air flow, so as to realize the discharge and collection of the waste material from the reaction tank; and under the above cooperation, since the waste material box can be separated from the reaction tank, the manufacturer can also realize the discharge and collection of the waste material during the operation of the reaction tank, that is, the discharge and collection effect of the waste material is improved, and the continuous accumulation of the waste material in the reaction tank is prevented;

[0016] Therefore, the utility model can reduce the difficulty of the operator in assembling and disassembling and cleaning the nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of example 1;

[0018] Figure 2 is Figure 1 A sectional view of

[0019] Figure 3 is a structural schematic view of example 2.

[0020] The marks in the drawings are: 1-reaction tank, 2-exhaust pipe, 3-catalyst inlet pipe, 4-flue gas inlet pipe, 5-flue gas outlet pipe, 6-heat exchanger, 7-discharge tank, 8-air pump, 9-nozzle, 10-sleeve, 11-sealing pipe, 12-mounting plate, 13-exhaust pipe, 14-collecting pipe, 15-waste material box, 16-falling pipe, 17-limit bolt, 18-baffle. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and examples, but not as the basis for limiting the utility model.

[0022] Example 1. Waste gas low-temperature degradation mechanism for garbage incineration, constitutes as Figures 1-2As shown, including reaction tank 1, the bottom of reaction tank 1 is provided with waste pipe 2, the outer part of reaction tank 1 is connected with catalyst inlet pipe 3, flue gas inlet pipe 4 and flue gas outlet pipe 5 respectively, heat exchanger 6 is connected on flue gas inlet pipe 4, heat exchanger 6 is used for first cooling when flue gas flows, so that flue gas is reduced to below 600℃ after heat exchange, the outer part of catalyst inlet pipe 3 is connected with discharge tank 7 and air pump 8 respectively, discharge tank 7 is used for quantitative discharge of catalyst, so that catalyst enters catalyst inlet pipe 3 after discharge, air pump 8 is used for conveying catalyst falling into catalyst inlet pipe 3, so that catalyst is fully contacted with flue gas after being sprayed from the top side of reaction tank 1.

[0023] The installation assembly is connected between the catalyst inlet pipe 3 and the reaction tank 1, and the nozzle 9 is detachably connected on the installation assembly, the nozzle 9 can be selected from an atomizing nozzle, a fan-shaped nozzle or a sand blasting nozzle; the installation assembly comprises a sleeve 10, one end of the sleeve 10 is sleeved on the outside of the catalyst inlet pipe 3, the other end of the sleeve 10 extends to the outside of the catalyst inlet pipe 3 and is connected with a sealing pipe 11, the sleeve 10 and the sealing pipe 11 are arranged in an inner and outer nested manner, one end of the sealing pipe 11 is fixedly connected with the reaction tank 1, the sleeve 10 on the inside of the sealing pipe 11 is connected with a mounting plate 12, the end of the nozzle 9 is detachably connected on the mounting plate 12 and faces the reaction tank 1, and a space for taking out the nozzle 9 is left between the sealing pipe 11 and the catalyst inlet pipe 3.

[0024] The reaction tank 1 can be a conventional heat exchange reactor, so that the flue gas is secondarily cooled after entering the reaction tank 1, and the flue gas is continuously cooled to a specified degradation temperature in the reaction tank 1.

[0025] One end of the sleeve 10 is connected with the catalyst inlet pipe 3 through a sealing ring, and the sleeve 10 and the connection part of the sleeve 10 are covered with sealing glue or sealing tape.

[0026] The waste pipe 2 is provided with an electric valve.

[0027] The outer part of the catalyst inlet pipe 3 is threadedly connected with a limiting bolt 17, and the end of the limiting bolt 17 is in close contact with the end of the sleeve 10.

[0028] The inner wall of the reaction tank 1 in the sealing pipe 11 is rotatably connected with a baffle 18, the end of the sleeve 10 passes through the sealing pipe 11 and extrudes and limits the baffle 18, so that the baffle 18 is in an open state; the baffle 18 is used for plugging the sealing pipe 11 after the sleeve 10 is pulled out.

[0029] In use, the flue gas first enters the heat exchanger 6 after being discharged from the furnace, and the heat exchanger 6 is used to cool the flue gas for the first time, so that the flue gas is cooled to below 600℃; the flue gas enters the reaction tank 1 after passing through the heat exchanger 6, and the catalyst is poured into the catalyst inlet pipe 3 from the discharge tank 7, and the catalyst is pressurized and delivered by the air pump 8, so that the catalyst is uniformly sprayed into the reaction tank 1 through the nozzle 9, so as to contact and react with the flue gas in the reaction tank 1 to realize the low-temperature degradation function. When the flue gas is degraded in the reaction tank 1, the reaction tank 1 can be used to cool the flue gas inside for the second time, so that the flue gas reaches the specified degradation temperature. After the flue gas is degraded, it is discharged from the flue gas outlet pipe 5 to the next station for treatment, and the solid-liquid waste generated during the reaction falls into the bottom of the reaction tank 1, and is collected by the operator through the waste outlet pipe 2 at regular intervals.

[0030] When the nozzle 9 is blocked after long-term use, the operator can remove the sealing glue between the sleeve 10 and the sealing pipe 11, then move the sleeve 10 transversely, so that the nozzle 9 on the mounting plate 12 can be moved to the interval between the sealing pipe 11 and the catalyst inlet pipe 3, facilitating the disassembly of the nozzle 9. After the sleeve 10 is pulled out, the baffle 18 falls and blocks the sealing pipe 11, so as to prevent the flue gas in the reaction tank 1 from overflowing outward, and ensure the environmental protection effect of the utility model.

[0031] Embodiment 2. The waste gas low-temperature degradation mechanism for waste incineration, as shown in Figure 3 The bottom of the reaction tank 1 is provided with a waste outlet pipe 2, and the outside of the reaction tank 1 is respectively connected with a catalyst inlet pipe 3, a flue gas inlet pipe 4 and a flue gas outlet pipe 5. The flue gas inlet pipe 4 is connected with a heat exchanger 6, which is used to cool the flue gas for the first time when the flue gas flows through, so that the flue gas is cooled to below 600℃ after heat exchange. The outside of the catalyst inlet pipe 3 is respectively connected with a discharge tank 7 and an air pump 8. The discharge tank 7 is used to discharge the catalyst quantitatively, so that the catalyst enters the catalyst inlet pipe 3 after being discharged. The air pump 8 is used to deliver the catalyst falling into the catalyst inlet pipe 3, so that the catalyst is sprayed into the reaction tank 1 from one side of the top of the reaction tank 1 and fully contacts with the flue gas;

[0032] The catalyst inlet pipe 3 and the reaction tank 1 are connected with each other through a mounting assembly, and a nozzle 9 is detachably connected to the mounting assembly, wherein the nozzle 9 can be selected from an atomizing nozzle, a fan-shaped nozzle or a sand blasting nozzle; the mounting assembly comprises a sleeve 10, one end of the sleeve 10 is sleeved on the outside of the catalyst inlet pipe 3, the other end of the sleeve 10 extends to the outside of the catalyst inlet pipe 3 and is connected with a sealing pipe 11, the sleeve 10 and the sealing pipe 11 are arranged in an inner-outer nested mode, one end of the sealing pipe 11 is fixedly connected with the reaction tank 1, the sleeve 10 on the inside of the sealing pipe 11 is connected with a mounting plate 12, the end of the nozzle 9 is detachably connected to the mounting plate 12 and faces the reaction tank 1, and a space for taking out the nozzle 9 is left between the sealing pipe 11 and the catalyst inlet pipe 3.

[0033] The reaction tank 1 can be a conventional heat exchange reactor, so that the flue gas is subjected to secondary cooling after entering the reaction tank 1, and the flue gas continues to be cooled to a specified degradation temperature in the reaction tank 1.

[0034] One end of the sleeve 10 is connected with the catalyst inlet pipe 3 through a sealing ring, and the sleeve 10 and the connection part of the sleeve 10 are coated with sealing glue.

[0035] The catalyst inlet pipe 3 is connected with a waste discharge pipe 13 at the end away from the sleeve 10, the end of the waste discharge pipe 13 is connected with the air pump 8, the middle part of the waste discharge pipe 13 is in communication with the waste outlet pipe 2, the waste discharge pipe 13 on one side of the waste outlet pipe 2 is connected with a vertically downward collecting pipe 14, the lower end of the collecting pipe 14 is connected with a waste box 15, and a pressure relief valve or a pressure relief pipe can be arranged on the waste box 15 as needed.

[0036] The middle part of the waste discharge pipe 13 forms a vertical drop pipe 16, the collecting pipe 14 is located at the bottom of the drop pipe 16, and a filter screen is connected in the drop pipe 16.

[0037] Electric valves are arranged on the collecting pipe 14, the drop pipe 16 and the waste outlet pipe 2.

[0038] A limiting bolt 17 is threadedly connected to the outside of the catalyst inlet pipe 3, and the end of the limiting bolt 17 is in close contact with the end of the sleeve 10.

[0039] A baffle 18 is rotatably connected to the inner wall of the reaction tank 1 on the inside of the sealing pipe 11, the end of the sleeve 10 passes through the sealing pipe 11 and extrudes and limits the baffle 18, so that the baffle 18 is in an open state; the baffle 18 is used for plugging the sealing pipe 11 after the sleeve 10 is pulled out.

[0040] Compared with the embodiment 1, the embodiment is characterized in that the catalyst inlet pipe 3 is connected with the air pump 8 through the dropping pipe 16 and the waste discharge pipe 13, and the collecting pipe 14 arranged at the bottom of the dropping pipe 16 and the waste tank 15 are matched; when the solid-liquid waste at the bottom of the reaction tank 1 needs to be discharged, the electric valve on the waste discharge pipe 2 and the collecting pipe 14 can be opened at the same time, so that the solid-liquid waste falls into the waste discharge pipe 13 below. After the waste falls, the electric valves on the waste discharge pipe 2 and the dropping pipe 16 are closed, and the air pump 8 is opened, so that the waste is blown into the collecting pipe 14 under the action of air flow, and falls into the waste tank 15 along the collecting pipe 14, thereby realizing the centralized collection of the waste.

[0041] When the waste in the waste tank 15 needs to be taken out, the electric valve on the collecting pipe 14 can be closed to separate the waste tank 15 and the catalyst inlet pipe 3 from each other, thereby ensuring the stable use of the low-temperature degradation mechanism.

Claims

1. A low-temperature degradation mechanism for waste incineration exhaust gas, comprising a reaction tank (1), a waste outlet pipe (2) at the bottom of the reaction tank (1), a catalyst inlet pipe (3), a flue gas inlet pipe (4) and a flue gas outlet pipe (5) connected to the outside of the reaction tank (1), a heat exchanger (6) connected to the flue gas inlet pipe (4), and a discharge tank (7) and a gas pump (8) connected to the outside of the catalyst inlet pipe (3), characterized in that: The catalyst inlet pipe (3) and the reaction tank (1) are connected with each other through an installation assembly, and a nozzle (9) is detachably connected to the installation assembly; the installation assembly comprises a sleeve (10), one end of the sleeve (10) is sleeved outside the catalyst inlet pipe (3), the other end of the sleeve (10) extends to the outside of the catalyst inlet pipe (3) and is connected with a sealing pipe (11), the sleeve (10) and the sealing pipe (11) are arranged in an inner-outer nested mode, one end of the sealing pipe (11) is fixedly connected with the reaction tank (1), the sleeve (10) on the inner side of the sealing pipe (11) is connected with a mounting plate (12), the end of the nozzle (9) is detachably connected to the mounting plate (12), and a space for taking out the nozzle (9) is left between the sealing pipe (11) and the catalyst inlet pipe (3).

2. The waste gas low-temperature degradation mechanism for waste incineration according to claim 1, characterized by: One end of the sleeve (10) is connected with the catalyst inlet pipe (3) through a sealing ring, and the sleeve (10) and the connection part of the sleeve (10) are coated with sealing glue.

3. The waste gas low-temperature degradation mechanism for waste incineration according to claim 1, characterized by: The catalyst inlet pipe (3) is connected with a waste pipe (13) at the end away from the sleeve (10), the end of the waste pipe (13) is connected with an air pump (8), the middle part of the waste pipe (13) is in communication with the waste outlet pipe (2), the waste pipe (13) on one side of the waste outlet pipe (2) is connected with a vertically downward collecting pipe (14), and the lower end of the collecting pipe (14) is connected with a waste box (15).

4. The waste gas low-temperature degradation mechanism for waste incineration according to claim 3, characterized by: The middle part of the waste pipe (13) forms a vertical drop pipe (16), the collecting pipe (14) is located at the bottom of the drop pipe (16), and a filter screen is connected in the drop pipe (16).

5. The waste gas low-temperature degradation mechanism for waste incineration according to claim 1, characterized by: The outer part of the catalyst inlet pipe (3) is threadedly connected with a limiting bolt (17), and the end of the limiting bolt (17) is in close contact with the end of the sleeve (10).

6. The waste gas low-temperature degradation mechanism for waste incineration according to claim 1, characterized by: A baffle (18) is rotatably connected to the inner wall of the reaction tank (1) on the inner side of the sealing pipe (11), and the baffle (18) is used for plugging the sealing pipe (11) after the sleeve (10) is pulled out.

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