Heat energy recovery structure of pyrolysis gasifier

Abstract

This utility model relates to the field of waste incineration technology, specifically to a heat recovery structure for a pyrolysis gasification furnace. The heat recovery structure for a pyrolysis gasification furnace includes: a pyrolysis gasification furnace; a support frame, the support frame being disposed on one side of the pyrolysis gasification furnace; and an auger conveyor, the auger conveyor being mounted on the support frame, the auger conveyor including a conveying pipe and an auger shaft disposed within the conveying pipe. The beneficial effects of this utility model are: this device covers the outside of the conveying pipe of the auger conveyor with a heating hood, and connects the exhaust port of the pyrolysis gasification furnace to the sealed chamber between the heating hood and the conveying pipe through an inlet pipe, allowing high-temperature flue gas to directly fill the sealed chamber, and then heat the conveying pipe through heat conduction, thereby achieving preheating treatment of the waste in the conveying pipe. This not only effectively recovers the heat energy in the flue gas and reduces heat loss, but also ensures that the waste reaches a higher temperature and a drier state before entering the pyrolysis gasification furnace.

Description

Technical Field

[0001] This utility model relates to the field of waste incineration technology, specifically to a heat energy recovery structure for a pyrolysis gasification furnace. Background Technology

[0002] With the acceleration of urbanization and the surge in the amount of domestic waste generated, pyrolysis gasification furnaces, as a highly efficient waste treatment device, are widely used in the field of waste incineration.

[0003] Existing pyrolysis gasification furnaces generate large amounts of high-temperature flue gas during waste incineration. Traditional treatment methods typically involve directly feeding this flue gas into a flue gas purification system for filtration to meet environmental emission requirements. However, since the emitted flue gas carries a considerable amount of heat energy, this treatment method results in a significant amount of heat energy in the flue gas not being effectively utilized, leading to energy waste. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a heat energy recovery structure for a pyrolysis gasification furnace. This solves the problem that the emitted flue gas carries a considerable amount of heat energy, but a large amount of heat energy in the flue gas is not effectively utilized, resulting in energy waste.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A heat energy recovery structure for a pyrolysis gasification furnace, comprising:

[0006] Pyrolysis gasification furnace:

[0007] A support frame is provided on one side of the pyrolysis gasification furnace;

[0008] An auger conveyor, the auger conveyor being mounted on a support frame, the auger conveyor including a conveying pipe and an auger shaft disposed within the conveying pipe;

[0009] A heating cover is fitted over the outside of a conveying pipe, wherein the heating cover and the conveying pipe are spaced apart to form a sealed chamber;

[0010] The feed pipe has one end located at the feed inlet of the pyrolysis gasification furnace, and the other end of the feed pipe passes through the heating hood and is connected to the discharge outlet of the conveying pipeline.

[0011] An inlet pipe, one end of which is connected to the exhaust port of the pyrolysis gasification furnace, and the other end of the first conduit is connected between the heating hood and the conveying pipe.

[0012] An outlet tube, one end of which is connected between the heating cover and the delivery pipe.

[0013] The beneficial effects of this utility model are:

[0014] 1) This device installs a heating hood around the conveying pipe of the auger conveyor, and connects the exhaust port of the pyrolysis gasification furnace to the sealed chamber between the heating hood and the conveying pipe through an inlet pipe. This allows the high-temperature flue gas to directly fill the sealed chamber and heat the conveying pipe through heat conduction, thereby achieving preheating treatment of the waste in the conveying pipe. This not only effectively recovers the heat energy in the flue gas and reduces heat loss, but also ensures that the waste reaches a higher temperature and drier state before entering the pyrolysis gasification furnace, improving the incineration efficiency and reducing fuel consumption in the furnace.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, the delivery pipe is also equipped with multiple heating components.

[0017] Furthermore, each of the heating components includes a heating ring, a friction block, and an elastic telescopic rod, with the heating ring embedded in the inner wall of the delivery pipe.

[0018] Furthermore, one end of the elastic telescopic rod is fixed to one side of the auger shaft, one side of the friction block abuts against the inner wall of the heating ring, and the other side of the friction block is fixed to the other end of the elastic telescopic rod.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, by using the heating component added in the conveying pipeline, when the auger shaft rotates at high speed to convey garbage, the friction block at one end of the elastic telescopic rod is driven by the rotation of the auger shaft to contact the heating ring, thereby generating high temperature through friction. This enables the heat from the heating ring to be transferred to the conveying pipeline, which can further enhance the preheating effect on the garbage inside the conveying pipeline. This allows the garbage inside the conveying pipeline to receive a double preheating effect, resulting in a higher temperature and a drier state, thus improving the incineration and decomposition efficiency.

[0020] Furthermore, both the heating ring and the friction block are made of tungsten-nickel alloy.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the materials of both the heating ring and the friction block are selected as tungsten-nickel alloy, which is suitable for use in high friction environments and has good wear resistance and thermal conductivity.

[0022] Furthermore, the friction block is arc-shaped.

[0023] The beneficial effect of adopting the above-mentioned further solution is that it fits the ring-shaped heating ring more closely. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a side sectional view of the present invention;

[0026] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 10. Pyrolysis gasification furnace; 20. Support frame; 30. Screw conveyor; 301. Screw shaft; 302. Conveying pipe; 40. Heating cover; 50. Feed pipe; 60. Inlet pipe; 70. Outlet pipe; 80. Heating component; 801. Heating ring; 802. Friction block; 803. Elastic telescopic rod. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] With the acceleration of urbanization and the surge in the amount of domestic waste generated, pyrolysis gasification furnaces, as a highly efficient waste treatment device, are widely used in the field of waste incineration.

[0031] Existing pyrolysis gasification furnaces generate a large amount of high-temperature flue gas during waste incineration. Traditional treatment methods typically involve directly feeding this flue gas into a flue gas purification system for filtration to meet environmental emission requirements. However, since the emitted flue gas carries a considerable amount of heat energy, this treatment method results in a significant amount of heat energy remaining unutilized, leading to energy waste. To address this issue, the inventor has proposed a heat recovery structure for pyrolysis gasification furnaces.

[0032] The present invention provides the following preferred embodiments.

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a heat recovery structure for a pyrolysis gasification furnace 10 includes:

[0034] Pyrolysis gasification furnace 10:

[0035] Support frame 20 is located on one side of pyrolysis gasification furnace 10;

[0036] The screw conveyor 30 is mounted on the support frame 20 and includes a conveying pipe 302 and a screw shaft 301 disposed in the conveying pipe 302.

[0037] Heating cover 40 (which may be made of stainless steel) is fitted over the outside of conveying pipe 302, wherein the heating cover 40 and the conveying pipe 302 are spaced apart to form a sealed chamber.

[0038] The feed pipe 50 has one end located at the feed inlet of the pyrolysis gasification furnace 10, and the other end of the feed pipe 50 passes through the heating hood 40 and is connected to the discharge outlet of the conveying pipe 302.

[0039] The inlet pipe 60 has one end connected to the exhaust port of the pyrolysis gasification furnace 10, and the other end of the first conduit is connected between the heating cover 40 and the conveying pipe 302.

[0040] The outlet pipe 70 has one end connected between the heating cover 40 and the conveying pipe 302, while the other end of the outlet pipe 70 can be connected to an external smoke purification device so that the smoke carrying heat can be fully utilized and then purified.

[0041] This device installs a heating hood 40 around the conveying pipe 302 of the screw conveyor 30, and connects the exhaust port of the pyrolysis gasification furnace 10 to the sealed chamber between the heating hood 40 and the conveying pipe 302 through the inlet pipe 60. This allows high-temperature flue gas to directly fill the sealed chamber and heat the conveying pipe 302 through heat conduction, thereby achieving preheating treatment of the waste in the conveying pipe 302. This not only effectively recovers the heat energy in the flue gas and reduces heat loss, but also ensures that the waste reaches a higher temperature and drier state before entering the pyrolysis gasification furnace 10, improving the incineration efficiency and reducing fuel consumption in the furnace.

[0042] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, in order to further enhance the preheating effect on the waste inside the conveying pipe 302, multiple heating components 80 are also provided inside the conveying pipe 302. Each heating component 80 includes a heating ring 801, a friction block 802, and an elastic telescopic rod 803. The heating ring 801 is embedded in the inner wall of the conveying pipe 302. One end of the elastic telescopic rod 803 is fixed to one side of the auger shaft 301. One side of the friction block 802 abuts against the inner wall of the heating ring 801, and the other side of the friction block 802 is fixed to the other end of the elastic telescopic rod 803.

[0043] By utilizing the heating element 80 added inside the conveying pipe 302, when the auger shaft 301 rotates at high speed to convey waste, the rotation of the auger shaft 301 drives the friction block 802 at one end of the elastic telescopic rod 803 to contact the heating ring 801, thereby generating high temperature through friction. This enables the heating ring 801 to conduct heat to the conveying pipe 302, resulting in a double preheating effect on the waste inside the conveying pipe 302, achieving a higher temperature and a drier state, thus improving the incineration decomposition efficiency.

[0044] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, both the heating ring 801 and the friction block 802 are made of tungsten-nickel alloy. The materials chosen for both the heating ring 801 and the friction block 802 are tungsten-nickel alloy, which is suitable for use in high-friction environments and has good wear resistance and thermal conductivity.

[0045] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the friction block 802 is arc-shaped, which fits more closely to the annular heating ring 801.

[0046] The specific working process of this utility model is as follows:

[0047] (1) First preheating

[0048] First, a heating cover 40 is installed outside the conveying pipe 302 of the screw conveyor 30, and the exhaust port of the pyrolysis gasification furnace 10 is connected to the sealed chamber between the heating cover 40 and the conveying pipe 302 through the inlet pipe 60, so that the high-temperature flue gas directly fills the sealed chamber, and then heats the conveying pipe 302 through heat conduction, thus achieving the first preheating treatment of the waste in the conveying pipe 302.

[0049] (2) Second preheating

[0050] The heating element 80 added inside the conveying pipe 302, when the auger shaft 301 rotates at high speed to convey garbage, drives the friction block 802 at one end of the elastic telescopic rod 803 to contact the heating ring 801, thereby generating high temperature through friction. This enables the heating ring 801 to conduct heat to the conveying pipe 302, which can further enhance the preheating effect on the garbage inside the conveying pipe 302, so that the garbage inside the conveying pipe 302 receives a second preheating treatment.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat recovery structure for a pyrolysis gasification furnace, characterized in that, include: Pyrolysis gasification furnace: A support frame is provided on one side of the pyrolysis gasification furnace; An auger conveyor, the auger conveyor being mounted on a support frame, the auger conveyor including a conveying pipe and an auger shaft disposed within the conveying pipe; A heating cover is fitted over the outside of a conveying pipe, wherein the heating cover and the conveying pipe are spaced apart to form a sealed chamber; The feed pipe has one end located at the feed inlet of the pyrolysis gasification furnace and the other end passing through the heating hood and connected to the discharge outlet of the conveying pipeline. An inlet pipe, one end of which is connected to the exhaust port of the pyrolysis gasification furnace, and the other end of the first conduit is connected between the heating hood and the conveying pipe. An outlet tube, one end of which is connected between the heating cover and the delivery pipe.

2. The heat recovery structure of a pyrolysis gasification furnace according to claim 1, characterized in that, The delivery pipeline is also equipped with multiple heating components.

3. The heat recovery structure of a pyrolysis gasification furnace according to claim 2, characterized in that, Each of the heating components includes a heating ring, a friction block, and an elastic telescopic rod, wherein the heating ring is embedded in the inner wall of the delivery pipe.

4. The heat recovery structure of a pyrolysis gasification furnace according to claim 3, characterized in that, One end of the elastic telescopic rod is fixed to one side of the auger shaft, one side of the friction block abuts against the inner wall of the heating ring, and the other side of the friction block is fixed to the other end of the elastic telescopic rod.

5. The heat recovery structure of a pyrolysis gasification furnace according to claim 4, characterized in that, Both the heating ring and the friction block are made of tungsten-nickel alloy.

6. The heat recovery structure of a pyrolysis gasification furnace according to claim 5, characterized in that, The friction block is arc-shaped.

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