Waste incineration waste heat recovery device

Abstract

The utility model discloses a waste incineration waste heat recovery device, and relates to the technical field of flue gas waste heat recovery, the waste incineration waste heat recovery device comprises a heat resistance tank, one side of the heat resistance tank is also fixedly provided with a flow dividing box, the flow dividing box is fixedly connected with an upper sealing cover, and one end of the flow dividing box connected with the upper sealing cover is also fixedly provided with a water outlet box; the water outlet tank is connected with an external heat energy utilization device, a circulation tank is fixedly installed in the flow dividing box, the end, close to the inner circulation tank, of the circulation tank is fixedly connected with the inner circulation tank, the circulation tank is further fixedly connected with an inclined sealing cover, and the circulation tank is obliquely arranged in the flow dividing box. A gas outlet is fixedly formed in the end, away from the inner circulation tank, of the circulation box, the gas outlet is connected with an external waste gas purification device, a plurality of heating pipes are fixedly installed in the circulation box, the contact range with waste gas is enlarged through the heating pipes and the side flow dividing pipes, and therefore heat in the waste gas can be fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas waste heat recovery, in particular to a waste incineration waste heat recovery device. Background Art

[0002] With the rapid increase in the amount of urban domestic waste, how to scientifically deal with these wastes and effectively reduce pollution to the environment has become the focus of public attention. Waste incineration, as a treatment method, can save land, kill bacteria and reduce treatment costs, so it has been widely used.

[0003] Waste incineration is the burning of waste through high-temperature oxidation, which generates heat and ash. During the incineration process, a large amount of flue gas and heat are generated. The flue gas generated during the waste incineration process contains a large amount of waste heat, which is usually released into the atmosphere in the form of high temperature. If the heat energy contained in these high-temperature flue gases is not utilized, it will cause a waste of energy. The flue gas waste heat recovery technology aims to transfer the waste heat in the flue gas to other media, such as water or air, through different heat exchange devices, thereby generating energy in the form of hot water, steam or hot air. Common heat exchange devices include heat exchangers, heat pipes, steam generators, etc.

[0004] The Chinese utility model patent with publication number: CN220135473U discloses a waste heat recovery device for garbage incineration, which can fully utilize the heat of the outer wall of the combustion box and avoid the waste of heat energy caused by heat loss on the outer wall of the combustion box.

[0005] In the prior art, heat recovery is performed by setting a circulation device outside the flue gas duct for recycling. However, this method does not expand the contact area between the flue gas duct and the circulation duct, resulting in a decrease in the utilization rate of waste gas in the flue gas. Utility Model Content

[0006] In view of the above technical problems, the utility model proposes the following technical solutions:

[0007] A waste incineration waste heat recovery device comprises a heat-resistant tank, a diverter box is fixedly installed on one side of the heat-resistant tank, the diverter box is fixedly connected to an upper cover, a water outlet box is fixedly installed on the end of the diverter box connected to the upper cover, the water outlet box is connected to an external heat energy utilization device, a circulation box is fixedly installed in the diverter box, the end of the circulation box close to the inner circulation tank is fixedly connected to the inner circulation tank, the circulation box is also fixedly connected to the inclined cover, the circulation box is inclined in the diverter box, an air outlet is fixedly installed on the end of the circulation box away from the inner circulation tank, the air outlet is connected to an external exhaust gas purification device, and a plurality of heating pipes are fixedly installed in the circulation box.

[0008] Furthermore, the heating pipe is composed of a plurality of vertical pipes, a plurality of water inlet pipes, and a transverse pipe. The transverse pipe is arranged in the circulation box to distribute the flow of water. In addition, the vertical pipes and the water inlet pipes are staggered on the transverse pipe. Side diverter pipes are also arranged on both sides of the circulation box. The side diverter pipes are used to expand the contact range between water and exhaust gas.

[0009] Furthermore, a plurality of heat distribution pipes are fixedly installed at the bottom end of the heat-resistant tank, an internal circulation tank is fixedly installed inside the heat-resistant tank, one end of the heat distribution pipe is connected to the external incinerator exhaust gas pipe, and the other end of the heat distribution pipe is fixedly installed in the internal circulation tank. The heat distribution pipe is used to put the exhaust gas with heat into the internal circulation tank. A plurality of circulation heating pipes are also fixedly installed on the internal circulation tank, and an inclined cover is fixedly installed on the end of the circulation heating pipe away from the heat distribution pipe, the inclined cover is fixedly connected to the internal circulation tank, and the inclined cover is fixedly connected to the inner wall of the heat-resistant tank, and an upper cover is fixedly installed on the end of the heat-resistant tank away from the heat distribution pipe.

[0010] Furthermore, the inner wall of the internal circulation tank, the inclined cover and the inner wall of the circulation box form a waste gas channel. The waste gas enters the waste gas channel through the heat distribution pipe. After passing through the internal circulation tank and the circulation box, the waste gas is discharged from the device through the outlet.

[0011] Furthermore, the outer wall of the inner circulation tank and the inner wall of the heat-resistant tank also have a diversion box, an upper cover, and a water outlet box to form a water circulation chamber. Circulating water is put into this water circulation chamber through the water inlet pipe at the bottom of the heat-resistant tank, and then the water is allowed to flow in the water circulation chamber. The water can pass through the circulating heating tube and the heating tube, and then flow out of the device from the water outlet box.

[0012] Compared with the prior art, the present invention has the following advantages: (1) the present invention increases the contact range with the exhaust gas by means of the heating pipe and the side diversion pipe, so that the heat in the exhaust gas can be fully utilized; (2) the present invention reduces the heat in the exhaust gas by adding a water circulation chamber in the exhaust gas pipe, allowing the exhaust gas to contact the water circulation pipe multiple times, and passing water through the water circulation chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a cross-sectional view of the heat-resistance tank, heat distribution pipe, upper cover, water outlet box, air outlet, circulation box, diversion box, inclined cover, and inner circulation tank structure of the utility model.

[0015] Figure 3 This is a cross-sectional view of the heat-resistance tank, heat distribution pipe, upper cover, inclined cover, circulation heating pipe, and inner circulation tank structure of the utility model.

[0016] Figure 4This is a cross-sectional view of the water outlet box, circulation box, diversion box, and heating pipe structure of the utility model.

[0017] Figure numerals: 101, heat-resistant tank; 102, heat distribution pipe; 103, upper cover; 104, water outlet box; 105, air outlet; 106, circulation box; 107, diversion box; 108, side diversion pipe; 201, heating pipe; 202, inclined cover; 203, circulating heating pipe; 204, inner circulation tank; 2011, vertical pipe; 2012, horizontal pipe; 2013, water inlet pipe. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figures 1 to 3 As shown, a waste incineration waste heat recovery device includes a heat-resistant tank 101, a circulating water pipe is fixedly installed at the bottom of the heat-resistant tank 101, a plurality of heat-dividing pipes 102 are fixedly installed at the bottom of the heat-resistant tank 101, an inner circulation tank 204 is fixedly installed in the heat-resistant tank 101, one end of the heat-dividing pipe 102 is connected to the external incinerator exhaust gas pipeline, and the other end of the heat-dividing pipe 102 is fixedly installed in the inner circulation tank 204, and the heat-dividing pipe 102 is used to put the exhaust gas with heat into the inner circulation tank 204, and a plurality of circulating heating pipes 203 are also fixedly installed on the inner circulation tank 204. An inclined cover 202 is fixedly installed on one end of the heating tube 203 away from the heat distribution tube 102, and the inclined cover 202 is fixedly connected to the internal circulation tank 204, and the inclined cover 202 is fixedly connected to the inner wall of the heat-resistant tank 101, and an upper cover 103 is fixedly installed on one end of the heat-resistant tank 101 away from the heat distribution tube 102. A diverter box 107 is also fixedly installed on one side of the heat-resistant tank 101, and the diverter box 107 is fixedly connected to the upper cover 103. A water outlet box 104 is also fixedly installed on the end of the diverter box 107 connected to the upper cover 103, and the water outlet box 104 is connected to an external heat energy utilization device.

[0020] like Figures 1 to 3 As shown, a circulation box 106 is fixedly installed in the diverter box 107, and the end of the circulation box 106 close to the inner circulation tank 204 is fixedly connected to the inner circulation tank 204. The circulation box 106 is also fixedly connected to the inclined cover 202. The circulation box 106 is tilted in the diverter box 107, and the end of the circulation box 106 away from the inner circulation tank 204 is fixedly installed with an air outlet 105, and the air outlet 105 is connected to an external exhaust gas purification device.

[0021] like Figures 2 to 4As shown, the heating pipe 201 is composed of a plurality of vertical pipes 2011, a plurality of water inlet pipes 2013, and a transverse pipe 2012. The transverse pipe 2012 is arranged in a circulation box 106 to distribute the flow of water. In addition, the vertical pipes 2011 and the water inlet pipes 2013 are staggered on the transverse pipe 2012, so as to allow the water to fully contact with the exhaust gas carrying heat. Side diverter pipes 108 are also arranged on both sides of the circulation box 106, and the side diverter pipes 108 are used to expand the contact range between water and exhaust gas.

[0022] like Figures 1 to 4 As shown, the inner wall of the inner circulation tank 204 and the inclined cover 202 and the inner wall of the circulation box 106 form a waste gas channel. The waste gas enters the waste gas channel through the heat distribution pipe 102. The waste gas passes through the inner circulation tank 204 and the circulation box 106 and then is discharged from the device through the gas outlet 105. The outer wall of the inner circulation tank 204 and the inner wall of the heat-resistant tank 101 as well as the diversion box 107, the upper cover 103, and the water outlet box 104 form a water circulation chamber. Circulating water is placed in this water circulation chamber through the water inlet pipe at the bottom of the heat-resistant tank 101, and then the water is allowed to flow in the water circulation chamber. The water can pass through the circulating heating tube 203 and the heating tube 201, and then flow out of the device from the water outlet box 104.

[0023] Working principle: When the device is in use, the heat distribution pipe 102 needs to be connected to the external incinerator exhaust pipe, and the air outlet 105 needs to be connected to the external exhaust gas purification device. Then the circulating water pipe and the water outlet box 104 need to be connected to the external heat energy utilization device, so that the water in the device can circulate.

[0024] After the exhaust gas enters the device through the heat distribution pipe 102, the exhaust gas flows from the inner circulation tank 204 to the circulation box 106, and then flows out from the air outlet 105, during which the exhaust gas will heat the water on the outer wall of the inner circulation tank 204, and also heat the water in the circulation heating pipe 203. Such hot water will enter the external heat energy utilization device through the water outlet box 104, and the exhaust gas will heat the water on the outer wall of the circulation box 106 when passing through the circulation box 106. At the same time, the exhaust gas will also heat the water in the side diversion pipe 108 and the heating pipe 201. In this way, the utilization efficiency is increased by allowing the water to come into indirect contact with the exhaust gas for multiple times.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A waste incineration waste heat recovery device, comprising a heat-resistant tank (101), characterized in that: A diverter box (107) is also fixedly installed on one side of the heat-resisting tank (101), and the diverter box (107) is fixedly connected to the upper cover (103). A water outlet box (104) is also fixedly installed on one end of the diverter box (107) connected to the upper cover (103), and the water outlet box (104) is connected to an external heat energy utilization device. A circulation box (106) is fixedly installed in the diverter box (107), and the circulation box (106) is close to the inner circulation tank (20 4) is fixedly connected to the inner circulation tank (204), the circulation box (106) is also fixedly connected to the inclined cover (202), the circulation box (106) is inclined in the diversion box (107), an end of the circulation box (106) away from the inner circulation tank (204) is fixedly installed with an air outlet (105), the air outlet (105) is connected to an external exhaust gas purification device, and a plurality of heating pipes (201) are fixedly installed in the circulation box (106).

2. A waste incineration waste heat recovery device according to claim 1, characterized in that: The heating pipe (201) is composed of a plurality of vertical pipes (2011), a plurality of water inlet pipes (2013), and a transverse pipe (2012). The transverse pipe (2012) is arranged in a circulation box (106) to distribute the flow of water. In addition, the vertical pipes (2011) and the water inlet pipes (2013) are staggered on the transverse pipe (2012). Side diversion pipes (108) are also arranged on both sides of the circulation box (106). The side diversion pipes (108) are used to expand the contact range between water and exhaust gas.

3. The waste incineration waste heat recovery device according to claim 1, characterized in that: A plurality of heat distribution pipes (102) are fixedly mounted at the bottom end of the heat-resisting tank (101), an internal circulation tank (204) is fixedly mounted inside the heat-resisting tank (101), one end of the heat distribution pipe (102) is connected to an external incinerator waste gas pipeline, and the other end of the heat distribution pipe (102) is fixedly mounted inside the internal circulation tank (204), the heat distribution pipe (102) is used to put waste gas with heat into the internal circulation tank (204), and the internal circulation tank (204) is used to store waste gas with heat. 4) and a plurality of circulating heating pipes (203) are fixedly mounted thereon; an inclined cover (202) is fixedly mounted on one end of the circulating heating pipe (203) away from the heat distribution pipe (102); the inclined cover (202) is fixedly connected to the inner circulation tank (204); the inclined cover (202) is fixedly connected to the inner wall of the heat-resistant tank (101); and an upper cover (103) is fixedly mounted on one end of the heat-resistant tank (101) away from the heat distribution pipe (102).

4. The waste incineration waste heat recovery device according to claim 2, characterized in that: The inner wall of the inner circulation tank (204) and the inner wall of the inclined cover (202) and the circulation box (106) form a waste gas channel. The waste gas enters the waste gas channel through the heat distribution pipe (102). After passing through the inner circulation tank (204) and the circulation box (106), the waste gas is discharged from the device through the outlet (105).

5. The waste incineration waste heat recovery device according to claim 2, characterized in that: The outer wall of the inner circulation tank (204) and the inner wall of the heat-resistant tank (101) also have a diverter box (107), an upper cover (103), and a water outlet box (104) to form a water circulation chamber. The water in the water circulation chamber flows in the water circulation chamber. The water can pass through the circulation heating pipe (203) and the heating pipe (201), and then flow out of the device from the water outlet box (104).

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