Waste gas treatment high-temperature waste heat recycling device

Abstract

The utility model relates to the technical field of waste gas waste heat recycling, in particular to a high-temperature waste heat recycling device for waste gas treatment. Comprising a waste heat recovery mechanism installed at the rear end of a filter, the waste heat recovery mechanism takes a cylindrical heat preservation barrel as a shell, eight U-shaped pipe grooves are formed in the inner wall of the heat preservation barrel in a circumferential array mode, a heat absorption pipe capable of conducting heat transfer is installed in each pipe groove, and a waste gas conveying pipe allowing waste gas to flow through is installed on the innermost side of the heat preservation barrel; the tail end of the waste heat recovery mechanism is connected with a drainage device, and the other end of the drainage device is provided with a Laval pipe; according to the waste heat recovery mechanism, the flowing speed of waste gas is reduced, meanwhile, hedging is carried out, heat in the waste gas can be further excited, heat can be fully dissipated, heat can be transferred in a balanced mode through the arranged soaking plate and soaking strips, heat can be effectively prevented from being lost through the arranged arc-shaped heat resistance forks, and it is guaranteed that the heat absorption pipe makes contact with waste heat for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas waste heat recycling, in particular to a waste gas treatment high-temperature waste heat recycling device. Background Art

[0002] Waste gas generally refers to the gas generated by industrial production. At the current stage, these gases are usually purified by filtering devices and then converted into non-toxic and harmless gases for discharge. In this process, the filtering device only plays a filtering and purification role, but the heat in the waste gas is not fully utilized; in the existing waste gas waste heat treatment device, since the main body structure of the heat exchange device is relatively simple, part of the heat will be transferred with the device body (or shell) as the medium, and this part of the heat can actually also be utilized.

[0003] In this regard, there is an urgent need for an improved high-temperature exhaust gas waste heat treatment device that can reduce the heat loss rate based on the structure of the device itself and fully achieve the effect of heat exchange and reuse. Utility Model Content

[0004] In order to solve the above problems and realize the above functions, the utility model provides a waste gas treatment high-temperature waste heat recycling device.

[0005] The utility model is realized through the following technical solutions:

[0006] A high-temperature waste heat recycling device for waste gas treatment, comprising a waste heat recovery mechanism installed at the rear end of a filter, the waste heat recovery mechanism using a cylindrical heat preservation tube as an outer shell, the inner wall of the heat preservation tube having eight U-shaped pipe grooves in a circumferential array and each pipe groove being equipped with a heat absorbing pipe capable of heat transfer, and an exhaust gas delivery pipe allowing exhaust gas to flow through being installed at the innermost side of the heat preservation tube;

[0007] A drainage device is connected to the tail end of the waste heat recovery mechanism, and a Laval tube is installed at the other end of the drainage device.

[0008] Furthermore, a heat-equalizing wall is connected between the exhaust gas conveying pipe and the heat-insulating cylinder, and eight heat-resistant branches connected to the heat-equalizing wall are installed in the inner wall of the heat-insulating cylinder, and each heat-resistant branch is distributed in a circular array, and the heat-resistant branches run through the front and back of the heat-insulating cylinder.

[0009] Furthermore, the heat-resistant branches are divided into upper and lower parts, the lower part is a heat-scaling strip connected to the outer side of the heat-scaling wall, and the upper part is two inwardly concave arc-shaped heat-resistant branches; each heat-resistant branch is located between two adjacent pipe grooves.

[0010] Furthermore, a plurality of counter-blocks are staggeredly arranged on the inner wall of the exhaust gas conveying pipe. The counter-blocks are in a triangular arc shape, and the right-angled faces thereof face in the opposite direction to the exhaust gas flow direction.

[0011] Furthermore, a water pipe that allows water to flow through is arranged below the drainage device, and the water pipe is connected to a water pump below.

[0012] Furthermore, a water inlet is provided at the end of the heat absorption pipe at the tail position of the waste heat recovery mechanism, and a water outlet is provided at the end of the heat absorption pipe at the front position of the waste heat recovery mechanism.

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

[0014] The waste heat recovery mechanism in the utility model can reduce the flow speed of the exhaust gas while hedging to further stimulate the heat in the exhaust gas so that the heat can be fully dissipated. The heat spreader and heat strip can transfer heat evenly. The arc-shaped heat-blocking fork can also effectively prevent heat loss, thereby ensuring long-term contact between the heat absorption pipe and the waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the waste heat recovery mechanism of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the end face of the waste heat recovery mechanism;

[0018] Figure 4 It is a half-section schematic diagram of the waste heat recovery mechanism of the utility model.

[0019] In the figure:

[0020] 1. Filter, 2. Waste heat recovery mechanism, 201. Insulation tube, 202. Heat-averaging wall, 203. Exhaust gas delivery pipe, 2031. Counter-block, 204. Heat-resistant branch, 2041. Heat-averaging strip, 2042. Arc-shaped heat-resistant branch, 205. Branch groove, 206. Pipe groove, 3. Drainage device, 301. Water pipe, 302. Water pump, 4. Laval tube, 5. Heat-absorbing pipe, 501. Water inlet, 502. Water outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 4 As shown, the utility model includes a waste heat recovery mechanism 2 installed at the rear end of the filter 1. This mechanism is a core component and is mainly used for waste heat recovery. The waste heat recovery mechanism 2 uses a cylindrical insulation tube 201 as an outer shell. The inner wall of the insulation tube 201 has eight U-shaped pipe grooves 206 in a circumferential array and each pipe groove 206 is installed with a heat absorption tube 5 capable of absorbing heat. The innermost side of the insulation tube 201 is installed with an exhaust gas conveying pipe 203 allowing exhaust gas to flow through. Due to the complexity of the inner wall structure of the insulation tube 201, it is difficult to use one raw material for processing during manufacturing, so it can be synthesized by splicing. The insulation tube 201 does not directly contact the exhaust gas, so there is no need to consider leakage.

[0024] A drainage device 3 is connected to the tail end of the waste heat recovery mechanism 2. The drainage device 3 is a conventional condensate discharge device and will not be described in detail here. Its function in this device is to discharge the waste water that has been liquefied due to the temperature reduction of the comparative part. A Laval tube 4 is installed at the other end of the drainage device 3. The inner diameter of the Laval tube 4 is characterized by being narrow at first and then wide, which is used to accelerate the flow rate of the exhaust gas passing through.

[0025] A heat-sparing wall 202 is connected between the exhaust gas delivery pipe 203 and the heat-insulating cylinder 201. Eight heat-resisting branches 204 connected to the heat-sparing wall 202 are also installed in the inner wall of the heat-insulating cylinder 201. Each heat-resisting branch 204 is distributed in a circular array. The heat-resisting branches 204 run through the front and back of the heat-insulating cylinder 201. The heat-resisting branches 204 are divided into upper and lower parts. The lower part is a heat-sparing strip 2041 connected to the outer side of the heat-sparing wall 202, and the upper part is two inwardly concave arc-shaped heat-resisting branches 2042. The position of each heat-resisting branch 204 is between two adjacent pipe grooves 206, which makes each heat-sparing strip 2041 Located between the two pipe grooves 206, when the exhaust gas conveying pipe 203 transfers the heat in the exhaust gas to the heat-averaging wall 202, the heat-averaging strips 2041 will continue to extend the heat to the surrounding areas. Since the shape of each heat-averaging strip 2041 is like a fin structure, the water pipes 206 next to it can absorb the waste heat very well. At the same time, in order to prevent the heat in the inner wall of the insulation tube 201 from dissipating outward, the inwardly concave arc-shaped heat-resistant fork 2042 will prevent the heat from continuing to spread; the heat-averaging wall 202 and the heat-averaging strips 2041 use the same material, which is a combination of conventional graphene and copper sheets, and the arc-shaped heat-resistant fork 2042 is a conventional insulation board.

[0026] A plurality of counter-blocks 2031 are staggeredly arranged on the inner wall of the exhaust gas delivery pipe 203. The counter-blocks 2031 are triangular arc-shaped, and the right-angled faces thereof face in the opposite direction to the exhaust gas flow direction. Figure 4 As shown, in this structure, when the exhaust gas flows from left to right, the impact block 2031 will reduce the flow speed of the exhaust gas and at the same time, the exhaust gas will be blocked and rebounded, impacting each other, further stimulating the residual heat temperature in the exhaust gas.

[0027] A water pipe 301 that allows water to flow through is arranged below the drainage device 3. The water pipe 301 is connected to a water pump 302 below. The water pump 302 and the drainage device 3 are both conventional devices, which function to discharge the wastewater formed by liquefying the waste gas after the temperature is subsequently cooled.

[0028] A water inlet 501 is provided at the end of the heat absorption tube 5 at the tail position of the waste heat recovery mechanism 2, and a water outlet 502 is provided at the end of the heat absorption tube 5 at the front position of the waste heat recovery mechanism 2, that is, the flow direction of the water flow for waste heat absorption in the heat absorption tube 5 is opposite to the flow direction of the exhaust gas in the exhaust gas conveying pipe 203, so as to ensure that the water flow in the heat absorption tube 5 can be gradually heated from low temperature to high temperature.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A waste gas treatment high-temperature waste heat recycling device, comprising a waste heat recovery mechanism (2) installed at the rear end of a filter (1), characterized in that: The waste heat recovery mechanism (2) has a cylindrical heat-insulating cylinder (201) as an outer shell, the inner wall of the heat-insulating cylinder (201) has eight U-shaped pipe grooves (206) arranged in a circumferential array, and each pipe groove (206) is installed with a heat-absorbing pipe (5) capable of heat transfer, and an exhaust gas conveying pipe (203) is installed at the innermost side of the heat-insulating cylinder (201) to allow exhaust gas to flow through; A drainage device (3) is connected to the tail end of the waste heat recovery mechanism (2), and a Laval tube (4) is installed at the other end of the drainage device (3).

2. The high-temperature waste heat recycling device for waste gas treatment according to claim 1 is characterized in that: A heat-averaging wall (202) is connected between the exhaust gas delivery pipe (203) and the heat-insulating cylinder (201), and eight heat-resistant branches (204) connected to the heat-averaging wall (202) are also installed in the inner wall of the heat-insulating cylinder (201), and each heat-resistant branch (204) is distributed in a circular array, and the heat-resistant branches (204) run through the front and back of the heat-insulating cylinder (201).

3. The high-temperature waste heat recycling device for waste gas treatment according to claim 2 is characterized in that: The heat-resistant branches (204) are divided into two parts, the lower part is a heat-sparing strip (2041) connected to the outside of the heat-sparing wall (202), and the upper part is two inwardly concave arc-shaped heat-resistant branches (2042); each heat-resistant branch (204) is located between two adjacent pipe grooves (206).

4. The high-temperature waste heat recycling device for waste gas treatment according to claim 1 is characterized in that: A plurality of counter-blocks (2031) are arranged in an alternating manner on the inner wall of the exhaust gas delivery pipe (203); the counter-blocks (2031) are in a triangular arc shape, and their right-angled surfaces face in the opposite direction to the exhaust gas flow direction.

5. The high-temperature waste heat recycling device for waste gas treatment according to claim 1 is characterized in that: A water pipe (301) capable of allowing water to flow through is arranged below the drainage device (3). The water pipe (301) is connected to a water pump (302) below.

6. The high-temperature waste heat recycling device for waste gas treatment according to claim 1 is characterized in that: A water inlet (501) is provided at the end of the heat absorbing pipe (5) at the rear portion of the waste heat recovery mechanism (2), and a water outlet (502) is provided at the end of the heat absorbing pipe (5) at the front portion of the waste heat recovery mechanism (2).

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