CN210568495U - Organic waste gas catalytic combustion waste heat recovery device - Google Patents
Organic waste gas catalytic combustion waste heat recovery device Download PDFInfo
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- CN210568495U CN210568495U CN201921107314.6U CN201921107314U CN210568495U CN 210568495 U CN210568495 U CN 210568495U CN 201921107314 U CN201921107314 U CN 201921107314U CN 210568495 U CN210568495 U CN 210568495U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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Abstract
The utility model relates to an enameled wire production facility field specifically is an organic waste gas catalytic combustion waste heat recovery device. The recovery device comprises a catalytic oxidizer, a baking furnace, an annealing furnace, a fan, a deionized water tank, a waste gas output pipe and a fresh air input pipe, wherein the annealing furnace comprises a steam input pipe, an air inlet of the catalytic oxidizer is communicated with the waste gas input pipe, and the recovery device further comprises a gas-gas heat exchanger, a gas-water heat exchanger for preparing water vapor and a heat pump device. The recovery device can realize three-level waste heat recovery of tail gas by utilizing the gas-gas heat exchanger, the gas-water heat exchanger and the heat pump equipment, the recovered heat can serve different production links of the enameled wire, all levels of recovery and utilization ways are feasible and reasonable in layout, and the comprehensive utilization rate of the tail gas heat energy is higher.
Description
Technical Field
The utility model relates to an enameled wire production facility field specifically is an organic waste gas catalytic combustion waste heat recovery device.
Background
Paint used in the enameled wire industry is basically solvent-based paint, a paint film needs to be baked in an oven to remove a solvent and realize self-curing, organic waste gas generated in the paint baking process needs to be subjected to catalytic combustion treatment to remove solvent components so as to avoid pollution, and tail gas generated by catalytic combustion is generally about 500 ℃, belongs to low-grade heat energy, is low in energy density and is difficult to use.
At present mainly through the heat energy that sets up heat transfer device in order recycle tail gas in enamelling machine inside, the current utilization mode of this type of enamelling machine tail gas heat energy is limited to the new trend in the heating benefit drying oven only, and remaining heat energy behind the tail gas heating new trend is still very considerable, consequently still is not ideal enough to the utilization ratio of tail gas heat energy.
Disclosure of Invention
The utility model aims to provide a can be applied to the high utilization ratio organic waste gas catalytic combustion waste heat recovery device of the different production links of enameled wire with the heat energy of catalytic combustion tail gas.
In order to achieve the above object, the utility model provides an organic waste gas catalytic combustion waste heat recovery device, including catalytic oxidation ware, baker, annealing stove, fan and deionized water tank, the baker includes waste gas output tube and new trend input tube, and the annealing stove includes the steam input tube, and the waste gas output tube is connected to catalytic oxidation ware's air inlet, and its special character lies in, still includes gas-gas heat exchanger, the gas-water heat exchanger and the heat pump equipment that are used for preparing vapor.
An exhaust port of the catalytic oxidizer is communicated with a hot side inlet of the gas-gas heat exchanger, a hot side outlet of the gas-gas heat exchanger is communicated with a hot side inlet of the gas-water heat exchanger, a cold side inlet of the gas-gas heat exchanger is communicated with the fan through a pipeline, and a cold side outlet of the gas-gas heat exchanger is communicated with the fresh air input pipe.
The hot side outlet of the gas-water heat exchanger is communicated with the low-temperature heat source inlet of the heat pump equipment, the cold side inlet of the gas-water heat exchanger is communicated with the high-temperature heat source outlet of the heat pump equipment, the cold side outlet of the gas-water heat exchanger is communicated with the steam input pipe, and the high-temperature heat source inlet of the heat pump equipment is communicated with the deionized water tank through a pipeline.
According to the scheme, the high-temperature tail gas generated by catalytic combustion of the organic waste gas is used for heating the fresh air of the drying oven through the gas-gas heat exchanger to realize primary waste heat recovery, and a large amount of heat energy is still contained in the fresh air heated to 300-400 ℃ from normal temperature by the tail gas in the process. In the enameled wire production, in the copper wire annealing link, steam needs to be introduced into an annealing furnace to provide a protective atmosphere to avoid oxidation of bare copper wires, the temperature of the steam is far lower than that of fresh air of a baking oven, the temperature of tail gas after the fresh air of the baking oven is heated can be controlled to be about 150 ℃ by optimizing related process conditions, and the tail gas at the temperature can be used as a heat source of heat exchange equipment for preparing the steam to realize secondary waste heat recovery of the tail gas.
The industrial gas-liquid heat exchanger can be used for heating deionized water by utilizing heat source gas to prepare water vapor, the temperature of tail gas after secondary waste heat recovery is still obviously higher than room temperature, but conventional heat exchange equipment cannot utilize the heat energy of the tail gas, so that the heat pump equipment can be considered to recover the heat energy of the heat exchanger to preheat the deionized water for preparing the water vapor, and further the tertiary waste heat recovery of the tail gas is realized, and the supply amount of the water vapor can be increased by introducing the tertiary waste heat recovery, so that the high-speed production of enameled wires is met.
The heat pump equipment comprises an evaporator, a condenser, a compressor and a throttle valve, wherein the evaporator comprises a low-temperature heat source inlet and a low-temperature heat source outlet, the condenser comprises a high-temperature heat source inlet and a high-temperature heat source outlet, a refrigerant outlet of the evaporator is communicated with an air inlet end of the compressor, an air outlet end of the compressor is connected with a refrigerant inlet of the condenser, a refrigerant outlet of the condenser is communicated with an air inlet end of the throttle valve, and an air outlet end of the throttle valve is communicated with a refrigerant inlet of the evaporator.
Therefore, the purpose of preheating deionized water by utilizing low-temperature tail gas through three-stage waste heat recovery can be realized by a typical heat pump unit consisting of an evaporator, a condenser, a compressor and a throttle valve, and the heat pump unit can be used as heat pump equipment in a waste heat recovery device.
In a further scheme, the heat pump equipment is an air source heat pump water heater.
Therefore, the air source heat pump water heater is a heat pump device special for heating water, comprises a typical heat pump unit consisting of an evaporator, a condenser, a compressor and a throttle valve, is a mature technology in the prior art, has high operation efficiency and low power consumption of an internal unit, can fully utilize heat energy in tail gas with lower temperature to preheat deionized water, and can be used as heat energy supplement in a steam preparation link.
The further proposal is that the gas-gas heat exchanger is a plate-shell type heat exchanger.
Therefore, the plate-shell heat exchanger is compact in structure, small in size, high in heat transfer coefficient generally more than twice that of the plate-shell heat exchanger, simple to disassemble and convenient to clean, has the advantages of high temperature and high pressure resistance and is suitable for being used as a gas-gas heat exchanger for primary recovery of waste heat of tail gas.
In a further scheme, the gas-water heat exchanger is a shell-and-tube heat exchanger.
From top to bottom, shell and tube type heat exchanger can use under high temperature, high pressure condition, can utilize high temperature tail gas heating deionized water to produce vapor, all possesses higher heat exchange efficiency from common fixed tube plate heat exchanger to comparatively advanced vortex hot film heat exchanger in this type of heat exchanger, and can satisfy the technological requirement of second grade waste heat recovery to temperature and pressure.
Drawings
FIG. 1 is a structural diagram of an embodiment of the waste heat recovery device for catalytic combustion of organic waste gas of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Referring to fig. 1, the utility model provides an organic waste gas catalytic combustion waste heat recovery device, including catalytic oxidation ware 1, baker 2, annealing stove 3, fan 4, deionized water tank 5, gas-gas heat exchanger 6, be used for preparing vapor gas-water heat exchanger 7 and heat pump equipment 8.
The baking furnace 2 comprises a waste gas output pipe 9 and a fresh air input pipe 10, the annealing furnace 3 comprises a steam input pipe 11, an air inlet of the catalytic oxidizer 1 is connected with the waste gas output pipe 9, an air outlet of the catalytic oxidizer 1 is connected with a hot side inlet of the gas-gas heat exchanger 6, a hot side outlet of the gas-gas heat exchanger 6 is connected with a hot side inlet of the gas-water heat exchanger 7, a cold side inlet of the gas-gas heat exchanger 6 is connected with the fan 4 through a pipeline, and a cold side outlet of the gas-gas heat exchanger 6 is connected with the fresh air input pipe 10.
A hot side outlet of the gas-water heat exchanger 7 is connected with a low-temperature heat source inlet of the heat pump device 8, a cold side inlet of the gas-water heat exchanger 7 is connected with a high-temperature heat source outlet of the heat pump device 8, a cold side outlet of the gas-water heat exchanger 7 is connected with a steam input pipe 11, and a high-temperature heat source inlet of the heat pump device 8 is connected with the deionized water tank 5 through a pipeline.
High-temperature tail gas generated by catalytic combustion of organic waste gas is used for heating fresh air of the drying furnace through the gas-gas heat exchanger 6 to realize primary waste heat recovery, and in the process, the tail gas heats the fresh air to 300-400 ℃ from normal temperature, and a large amount of heat energy is still contained. In the enameled wire production, in the copper wire annealing link, water vapor needs to be introduced into the annealing furnace 3 to provide a protective atmosphere to avoid oxidation of bare copper wires, the temperature of the water vapor is far lower than that of fresh air of the oven, the temperature of tail gas after the fresh air of the oven is heated can be controlled to be about 150 ℃ by optimizing related process conditions, and the tail gas at the temperature can be used as a heat source of heat exchange equipment for preparing the water vapor to realize secondary waste heat recovery of the tail gas. The gas-liquid heat exchanger 7 can be industrially used for heating deionized water by utilizing heat source gas to prepare water vapor, the temperature of tail gas after secondary waste heat recovery is still obviously higher than room temperature, but the conventional heat exchange equipment cannot utilize the heat energy of the tail gas.
The heat pump device 8 can enable heat to flow from a low-temperature object to a high-temperature object, and can obtain larger heat supply amount only by consuming a small amount of inverse Carnot cycle net work, and can effectively utilize low-grade heat energy, so that the heat pump device 8 can be used for recovering tail gas heat energy subjected to secondary waste heat recovery to preheat deionized water for preparing water vapor, and therefore three-stage waste heat recovery of the tail gas is realized. The third stage of waste heat recovery is introduced, so that the supply amount of water vapor can be increased, and the high-speed production of the enameled wire is met. The temperature of the tail gas after the heat pump device 8 finishes the three-stage waste heat recovery is close to the room temperature, almost no harmful components are contained, the tail gas can be directly emptied, and the tail gas can also be used for cooling in a take-up link.
In specific implementation, the catalytic oxidizer 1 can be an oxidation combustion chamber integrated in an enamelling machine, the gas-gas heat exchanger 6 can be considered to be arranged in the enamelling machine, and the gas-water heat exchanger 7 and the heat pump device 8 serve as the annealing furnace 3, so that the catalytic oxidizer is more suitable for being arranged beside the annealing furnace 3 in an external mode.
Meanwhile, it is easy to think that the heat pump device 8 can also utilize low-temperature tail gas to preheat boiler water or heat domestic water, and only needs to connect the high-temperature heat source inlet and outlet of the heat pump into the corresponding water using pipe network. The heat pump defaults to heating a high-temperature heat source by using a low-temperature heat source, so that the high-temperature heat source of the heat pump device 8 in the embodiment is deionized water, the low-temperature heat source is tail gas, and the difference between the high-temperature heat source and the low-temperature heat source in the name does not represent the actual temperature of the deionized water and the tail gas.
The heat pump device 8 includes an evaporator 81, a condenser 82, a compressor 83, and a throttle valve 84, the evaporator 81 includes a low-temperature heat source inlet and a low-temperature heat source outlet, the condenser 82 includes a high-temperature heat source inlet and a high-temperature heat source outlet, a refrigerant outlet of the evaporator 81 is communicated with an air inlet end of the compressor 83, an air outlet end of the compressor 83 is connected with a refrigerant inlet of the condenser 82, a refrigerant outlet of the condenser 82 is communicated with an air inlet end of the throttle valve 84, and an air outlet end of the throttle valve 84 is communicated with a refrigerant inlet of the evaporator 81.
The purpose of preheating deionized water by using low-temperature tail gas can be realized by using a typical heat pump unit consisting of an evaporator 81, a condenser 82, a compressor 83 and a throttle valve 84, and therefore, the heat pump unit can be used as heat pump equipment in a waste heat recovery device. The heat pump device 8 is an air source heat pump water heater, the air source heat pump water heater is a heat pump device special for heating water, the existing mature technology is adopted, the operation efficiency of an internal unit is high, the power consumption is low, the heat energy of tail gas with lower temperature can be fully utilized to preheat deionized water, and the heat energy can be used for supplementing heat energy in a steam preparation link.
The air source heat pump water heater comprises a typical heat pump unit consisting of an evaporator 81, a condenser 82, a compressor 83 and a throttle valve 84, but certain optimization is made on the equipment level aiming at the self purpose, so the set of typical heat pump unit can also represent the air source heat pump water heater.
The gas-gas heat exchanger 6 is a plate-shell type heat exchanger which is compact in structure and small in size, the heat transfer coefficient is generally more than twice that of the plate-shell type heat exchanger, and the gas-gas heat exchanger has the advantages of high temperature and high pressure resistance, simplicity in disassembly and convenience in cleaning compared with the plate type heat exchanger, and is suitable for being used as the gas-gas heat exchanger 6 for primary recovery of waste heat of tail gas.
The gas-water heat exchanger 7 is a shell-and-tube heat exchanger which can be applied to high-temperature and high-pressure process conditions and can heat deionized water to generate steam by using high-temperature tail gas, and the common fixed tube plate heat exchanger to the more advanced eddy current heat film heat exchanger in the heat exchanger has higher heat exchange efficiency and can meet the process requirements of secondary waste heat recovery on temperature and pressure.
In conclusion, the organic waste gas catalytic combustion waste heat recovery device can serve different production links of the enameled wire aiming at three-level waste heat recovery of the tail gas, all levels of recycling ways are feasible and reasonable in layout, and the comprehensive utilization rate of the heat energy of the tail gas is high.
Claims (5)
1. Organic waste gas catalytic combustion waste heat recovery device, including catalytic oxidation ware, baker, annealing stove, fan and deionized water tank, the baker includes waste gas output tube and new trend input tube, the annealing stove includes the steam input tube, catalytic oxidation ware's air inlet is connected waste gas output tube, its characterized in that:
the recovery device also comprises a gas-gas heat exchanger, a gas-water heat exchanger for preparing water vapor and heat pump equipment, wherein an exhaust port of the catalytic oxidizer is communicated with a hot side inlet of the gas-gas heat exchanger, a hot side outlet of the gas-gas heat exchanger is communicated with a hot side inlet of the gas-water heat exchanger, a cold side inlet of the gas-gas heat exchanger is communicated with the fan through a pipeline, and a cold side outlet of the gas-gas heat exchanger is communicated with the fresh air input pipe;
and a hot side outlet of the gas-water heat exchanger is communicated with a low-temperature heat source inlet of the heat pump equipment, a cold side inlet of the gas-water heat exchanger is communicated with a high-temperature heat source outlet of the heat pump equipment, a cold side outlet of the gas-water heat exchanger is communicated with the steam input pipe, and a high-temperature heat source inlet of the heat pump equipment is communicated with the deionized water tank through a pipeline.
2. The catalytic combustion waste heat recovery device for organic waste gas according to claim 1, wherein:
the heat pump equipment comprises an evaporator, a condenser, a compressor and a throttle valve, wherein the evaporator comprises a low-temperature heat source inlet and a low-temperature heat source outlet, the condenser comprises a high-temperature heat source inlet and a high-temperature heat source outlet, a refrigerant outlet of the evaporator is communicated with an air inlet end of the compressor, an air outlet end of the compressor is connected with a refrigerant inlet of the condenser, a refrigerant outlet of the condenser is communicated with an air inlet end of the throttle valve, and an air outlet end of the throttle valve is communicated with a refrigerant inlet of the evaporator.
3. The organic waste gas catalytic combustion waste heat recovery device according to claim 2, characterized in that:
the heat pump equipment is an air source heat pump water heater.
4. The catalytic combustion waste heat recovery device for organic exhaust gas according to any one of claims 1 to 3, characterized in that:
the gas-gas heat exchanger is a plate-shell type heat exchanger.
5. The catalytic combustion waste heat recovery device for organic exhaust gas according to any one of claims 1 to 3, characterized in that:
the gas-water heat exchanger is a shell-and-tube heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107314.6U CN210568495U (en) | 2019-07-15 | 2019-07-15 | Organic waste gas catalytic combustion waste heat recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921107314.6U CN210568495U (en) | 2019-07-15 | 2019-07-15 | Organic waste gas catalytic combustion waste heat recovery device |
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| Publication Number | Publication Date |
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| CN210568495U true CN210568495U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921107314.6U Active CN210568495U (en) | 2019-07-15 | 2019-07-15 | Organic waste gas catalytic combustion waste heat recovery device |
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| CN (1) | CN210568495U (en) |
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