Waste heat utilization device for incinerator
By installing a water storage tank and heat exchanger after the incinerator, the high-temperature waste gas is used to heat water and recycle it, which solves the problem of heat energy waste and equipment failure caused by the direct emission of high-temperature waste gas from the incinerator, and realizes the efficient reuse of heat energy and stable operation of the equipment.
Patent Information
- Application Number
- CN202520047405.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-09
AI Technical Summary
The direct emission of high-temperature exhaust gas from existing incinerators leads to frequent malfunctions of high-temperature exhaust fans and waste of thermal energy.
A water storage tank and heat exchanger are installed after the incinerator. Water is heated by the incinerator exhaust gas and then recycled. A backup heating device is provided to meet the heat energy demand.
It enables the reuse of high-temperature exhaust gas heat energy, avoids heat energy waste, reduces equipment energy consumption, saves space, and meets heat energy requirements in low-temperature environments.
Smart Images
Figure CN223869206U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of waste heat utilization devices for incinerator, belong to waste heat recovery technical field. BACKGROUND
[0002] After the workpiece of electrophoretic coating line is solidified after electrophoresis, benzene and VOC gas are generated, which need to be treated to reach standard before being discharged into atmosphere, and the most effective treatment process is to discharge after cracking VOC in waste gas by high temperature, so harmful substances in solidification furnace waste gas are treated by setting incinerator.
[0003] The waste gas of the existing oven is directly discharged into atmosphere by fan after passing through incinerator, and this direct discharge mode has the following problems: 1, the temperature of waste gas after incineration reaches 780℃, and the high-temperature exhaust fan frequently fails, which causes the incinerator to be unable to be normally used; 2, the high-temperature waste gas after incineration directly discharges the heat, causing heat energy waste; in view of the above problems, we propose a waste heat utilization device for incinerator. UTILITY MODEL CONTENT
[0004] The utility model aims at overcoming the insufficient of prior art and providing a waste heat utilization device for incinerator.
[0005] To achieve the above object, the utility model adopts the technical scheme that a waste heat utilization device for incinerator includes an incinerator body, a water storage tank and two heating tanks; a waste gas conveying pipeline is arranged at the waste gas outlet end of the incinerator body, a heat exchanger is arranged in the water storage tank, and the incinerator body is connected with the air inlet of the heat exchanger through the waste gas conveying pipeline; a first waste gas discharge pipeline is arranged at the air outlet of the heat exchanger, the first waste gas discharge pipeline leads to outside of the water storage tank, and a first waste gas discharge fan is arranged at the outer end of the first waste gas discharge pipeline; a hot water circulating pipeline and a hot water return pipeline are arranged between the water storage tank and the two heating tanks, the starting end of the hot water circulating pipeline is communicated with the water storage tank, and the terminal end of the hot water circulating pipeline is respectively communicated with the two heating tanks; the starting end of the hot water return pipeline is respectively communicated with the two heating tanks, and the terminal end of the hot water return pipeline extends into the water storage tank.
[0006] Preferably, a standby heating device is further arranged in the water storage tank, the standby heating device is located at one side of the heat exchanger, a second waste gas discharge pipeline is arranged on the standby heating device, the second waste gas discharge pipeline leads to outside of the water storage tank, and a second waste gas discharge fan is arranged at the outer end of the second waste gas discharge pipeline.
[0007] Preferably, a first combustion-supporting fan is arranged at one end of the standby heating device away from the second waste gas discharge pipeline.
[0008] Preferably, the standby heating device is a combustion machine.
[0009] Preferably, a hot water circulation pump is installed on the hot water circulation pipe, and the hot water circulation pump is located near the starting end of the hot water circulation pipe.
[0010] Preferably, a second combustion-supporting fan is provided at the exhaust gas inlet end of the incinerator body.
[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0012] This utility model discloses a waste heat recovery device for an incinerator. A water storage tank is installed behind the incinerator body, and a heat exchanger is installed inside the tank. High-temperature waste gas passing through the incinerator body transfers heat to the water in the storage tank via the heat exchanger. The heated water is then pumped to other heat-demanding workstations within the equipment via a hot water circulation pump, thus realizing the reuse of the high-temperature waste gas's thermal energy and effectively avoiding heat waste. Simultaneously, a backup heating device is also installed. When the waste gas heat cannot meet the equipment's thermal energy consumption in winter, the backup heating device can be activated to meet the equipment's thermal energy needs. Attached Figure Description
[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings:
[0014] Appendix Fig. 1 This is a schematic diagram of the structure of a waste heat recovery device for an incinerator according to the present invention;
[0015] Appendix Fig. 2 This is a schematic diagram of the structure of a waste heat recovery device for an incinerator according to the present invention, which removes waste heat from the incinerator body.
[0016] In the diagram: 1. Incinerator body; 11. Exhaust gas conveying pipeline; 12. Second combustion-supporting blower; 2. Water storage tank; 3. Heating tank; 4. Heat exchanger; 41. First exhaust gas discharge pipeline; 42. First exhaust gas discharge blower; 5. Hot water circulation pipeline; 51. Hot water circulation pump; 6. Hot water return pipeline; 7. Backup heating device; 71. Second exhaust gas discharge pipeline; 72. Second exhaust gas discharge blower; 73. First combustion-supporting blower. Detailed Implementation
[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0018] As attached Figs. 1-2 As shown, the waste heat utilization device for an incinerator according to this utility model includes an incinerator body 1, a water storage tank 2, and two heating tanks 3.
[0019] The incinerator body 1 is provided with an exhaust gas conveying pipe 11 at the exhaust gas outlet end, and a heat exchanger 4 is provided in the water storage tank 2. The incinerator body 1 is connected to the air inlet of the heat exchanger 4 through the exhaust gas conveying pipe 11 to convey the high-temperature exhaust gas in the incinerator body 1 to the heat exchanger 4. When the heat exchanger 4 is working, it transfers the heat of the high-temperature exhaust gas to the water in the water storage tank 2 to heat the water in the water storage tank 2.
[0020] The incinerator body 1 is equipped with a second combustion-supporting fan 12 at the exhaust gas inlet end to provide sufficient oxygen to the interior of the incinerator body 1, so as to ensure that the combustion inside the incinerator body 1 can be fully completed.
[0021] The heat exchanger 4 is provided with a first exhaust gas discharge pipe 41 at its air outlet. The first exhaust gas discharge pipe 41 leads to the outside of the water storage tank 2. The exhaust gas treated by the heat exchanger 4 is discharged to the outside through the first exhaust gas discharge pipe 41. The outer end of the first exhaust gas discharge pipe 41 is provided with a first exhaust gas discharge fan 42 to help accelerate the exhaust gas discharge.
[0022] A hot water circulation pipe 5 and a hot water return pipe 6 are provided between the water storage tank 2 and the two heating tanks 3. The starting end of the hot water circulation pipe 5 is connected to the water storage tank 2, and the ending end of the hot water circulation pipe 5 is connected to the two heating tanks 3 respectively. A hot water circulation pump 51 is provided on the hot water circulation pipe 5, and the hot water circulation pump 51 is close to the starting end of the hot water circulation pipe 5. When working, the hot water circulation pump 51 draws the heated water from the water storage tank 2, and the water flows from the starting end of the hot water circulation pipe 5 to the two heating tanks 3 respectively. The hot water in the two heating tanks 3 can be transported to other heat energy demand positions through pipes and other structures to realize the heat energy reuse of high-temperature waste gas and effectively avoid heat energy waste.
[0023] The starting end of the hot water return pipe 6 is connected to two heating tanks 3 respectively, and the end of the hot water return pipe 6 extends into the water storage tank 2. The water from the two heating tanks 3 flows back to the water storage tank 2 through the hot water return pipe 6 and continues to convert heat energy with the high-temperature exhaust gas, thus forming a heat conversion loop that can continuously convert heat.
[0024] The water storage tank 2 is also equipped with a backup heating device 7, which is located on one side of the heat exchanger 4. In this embodiment, the backup heating device 7 is set as a burner. When the waste heat from the exhaust gas cannot meet the equipment's heat energy consumption in winter, the backup heating device 7 can be started to meet the equipment's heat energy consumption.
[0025] The backup heating device 7 is equipped with a first combustion-supporting fan 73 at the end away from the second exhaust pipe 71 to provide sufficient oxygen for the backup heating device 7, so that the backup heating device 7 can burn completely.
[0026] In addition, the standby heating device 7 is equipped with a second exhaust gas pipe 71, which leads to the outside of the water storage tank 2 to discharge the exhaust gas generated when the standby heating device 7 is heating. The outer end of the second exhaust gas pipe 71 is equipped with a second exhaust gas fan 72 to accelerate the exhaust gas discharge.
[0027] In summary, this application achieves the reuse of the thermal energy of the high-temperature waste gas by setting a water storage tank 2 after the incinerator body 1 and installing a heat exchanger 4 in the water storage tank 2. The high-temperature waste gas passing through the incinerator body 1 transfers heat to the water in the water storage tank 2 through the heat exchanger 4. The heated water is then transported to other heat-demanding work positions of the equipment by a hot water circulation pump 51, thereby effectively avoiding the waste of thermal energy. At the same time, a backup heating device 7 is also installed. When the waste heat from the waste gas cannot meet the thermal energy consumption of the equipment in winter, the backup heating device 7 can be activated to meet the thermal energy consumption needs of the equipment.
[0028] In addition, this application can effectively save space and space, and reduce the energy consumption required for heating.
[0029] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.
Claims
1. A waste heat recovery device for an incinerator, characterized in that: The incinerator includes an incinerator body (1), a water storage tank (2), and two heating tanks (3). An exhaust gas conveying pipe (11) is provided at the exhaust gas outlet of the incinerator body (1). A heat exchanger (4) is installed inside the water storage tank (2). The incinerator body (1) is connected to the air inlet of the heat exchanger (4) via the exhaust gas conveying pipe (11). A first exhaust gas discharge pipe (41) is provided at the air outlet of the heat exchanger (4). The first exhaust gas discharge pipe (41) leads to the outside of the water storage tank (2), and the first exhaust gas discharge pipe... (41) is provided with a first exhaust fan (42) at its outer end; a hot water circulation pipe (5) and a hot water return pipe (6) are provided between the water storage tank (2) and the two heating tanks (3). The starting end of the hot water circulation pipe (5) is connected to the water storage tank (2), and the end of the hot water circulation pipe (5) is connected to the two heating tanks (3) respectively; the starting end of the hot water return pipe (6) is connected to the two heating tanks (3) respectively, and the end of the hot water return pipe (6) extends into the water storage tank (2).
2. The waste heat recovery device for an incinerator according to claim 1, characterized in that: The water storage tank (2) is also equipped with a backup heating device (7). The backup heating device (7) is located on one side of the heat exchanger (4). The backup heating device (7) is equipped with a second exhaust gas pipe (71). The second exhaust gas pipe (71) leads to the outside of the water storage tank (2), and a second exhaust gas fan (72) is installed at the outer end of the second exhaust gas pipe (71).
3. The waste heat recovery device for an incinerator according to claim 2, characterized in that: The backup heating device (7) is equipped with a first combustion-supporting fan (73) at the end away from the second exhaust pipe (71).
4. A waste heat recovery device for an incinerator according to claim 2 or 3, characterized in that: The backup heating device (7) is a burner.
5. The waste heat recovery device for an incinerator according to claim 1, characterized in that: A hot water circulation pump (51) is installed on the hot water circulation pipe (5), and the hot water circulation pump (51) is close to the starting end of the hot water circulation pipe (5).
6. The waste heat recovery device for an incinerator according to claim 1, characterized in that: The incinerator body (1) is equipped with a second combustion-supporting fan (12) at the exhaust gas inlet end.