CN217979961U - Waste gas heat energy recovery device - Google Patents
Waste gas heat energy recovery device Download PDFInfo
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- CN217979961U CN217979961U CN202221832557.8U CN202221832557U CN217979961U CN 217979961 U CN217979961 U CN 217979961U CN 202221832557 U CN202221832557 U CN 202221832557U CN 217979961 U CN217979961 U CN 217979961U
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Abstract
The utility model relates to a waste gas heat recovery unit, it has solved the phenomenon that printing and dyeing industry comdenstion water heat is wasted and water quality is wasted, forming machine waste gas heat energy is wasted, it is equipped with waste gas heat transfer device, flash evaporation exhaust apparatus, heat accumulation buffer and steam booster compressor, waste gas heat transfer device installs on waste gas air exit pipeline, waste gas heat transfer device is equipped with the waste gas pipeline and the water pipeline that are used for the heat transfer, waste gas heat transfer device through water pipeline with flash evaporation exhaust apparatus's pipeline intercommunication and constitute the hydrologic cycle pipeline, the hydrologic cycle pipeline is equipped with circulating water pump and back pressure valve; the flash evaporation exhaust device is provided with a flash evaporation tank, the flash evaporation tank is provided with a water replenishing port, and the water replenishing port is communicated with a condensate pipeline; the flash evaporation exhaust device is communicated with the heat storage buffer device through a steam pipeline, and the heat storage buffer device is communicated with the steam booster through a steam pipeline. The utility model discloses but wide application in printing and dyeing forming machine equipment heat recovery.
Description
Technical Field
The utility model relates to a waste heat recovery field especially relates to a waste gas heat recovery device.
Background
The setting machine is a machine for setting textile products, is one of main energy consumption devices in the textile printing and dyeing industry, and is a device for drying, finishing and setting fabrics by utilizing hot air. The temperature of hot air required in a common setting machine is about 220 ℃, the temperature of waste gas of the setting machine is about 150-200 ℃, a large amount of waste heat is discharged into the air, and the waste gas contains oil and floc, so that a waste gas heat exchanger is blocked, and the waste gas waste heat is difficult to be effectively utilized. High-energy-consumption equipment such as a setting machine and a dyeing machine can produce a large amount of condensate water, most enterprises cannot efficiently recycle high-quality high-temperature condensate water due to the technical difficulty of waste heat recovery of the condensate water in the conventional waste heat recovery system, and a large amount of condensate water is directly used as dye vat hot water.
Disclosure of Invention
The utility model discloses a solve the thermal recycle of current forming machine flue gas low, the heat exchanger easily blocks up, the technical problem of high-quality comdenstion water recovery efficiency low, the extravagant energy provides a waste gas heat recovery unit that recovery efficiency is high.
The utility model provides a waste gas heat recovery device is equipped with waste gas heat transfer device in printing and dyeing forming machine waste gas air exit, waste gas heat transfer device rear end is equipped with flash evaporation exhaust apparatus, heat accumulation buffer and steam booster compressor, waste gas heat transfer device is equipped with waste gas pipeline and the water pipeline that is used for the heat transfer, waste gas heat transfer device passes through the water pipeline with the pipeline intercommunication of flash evaporation exhaust apparatus and constitutes the hydrologic cycle pipeline, two pipelines are equipped with circulating water pump and back pressure valve respectively on the hydrologic cycle pipeline, circulating water pump carries the circulating water from the flash evaporation exhaust apparatus to waste gas heat transfer apparatus, flash evaporation exhaust apparatus is equipped with the flash drum, the flash drum is equipped with the moisturizing mouth, the moisturizing mouth passes through the pipeline with the comdenstion water of comdenstion water production facility and communicates; the flash evaporation exhaust device is communicated with the heat storage buffer device through a steam pipeline, and the heat storage buffer device is communicated with the steam booster through a steam pipeline.
Preferably, a flue gas valve is arranged at the inlet end and the outlet end of a flue gas pipeline of the waste gas heat exchange device, a bypass is connected in parallel with the waste gas heat exchange device, and the bypass is provided with the flue gas valve.
Preferably, waste gas in the waste gas heat exchange device flows from top to bottom, and an overflow oil discharge device is arranged at the lowest point of an outlet end of the waste gas heat exchange device to discharge oil.
Preferably, the waste gas heat exchange device is further provided with an automatic steam cleaning device for cleaning oil in waste gas.
Preferably, the water circulation pipeline still is equipped with check valve, balanced valve, flowmeter, pressure transmitter, the check valve is installed circulating water pump export one end, balanced valve, flowmeter, pressure transmitter install between back pressure valve and the exhaust gas cooling device.
Preferably, the flash evaporation exhaust device is further provided with an overflow port, and the overflow port is communicated with the overflow back pressure tank.
Preferably, the flash evaporation exhaust device, the heat accumulation buffer device and the steam booster are equal in number and are assembled into a whole.
Preferably, the heat storage buffer device and the flash evaporation exhaust device are equal in number, the flash evaporation exhaust device is larger than the heat storage buffer device in number, and the heat storage buffer device is communicated with more than two flash evaporation exhaust devices simultaneously.
The utility model has the advantages that:
the waste gas heat exchange device is arranged on the setting machine, waste heat recovery is carried out as soon as hot waste gas goes out of the setting machine, the temperature of the waste gas is reduced, heat loss is reduced, and the waste heat recovery efficiency is high; the utility model adopts the condensed water as the water supplement of the flash tank, fully recycles the heat of the condensed water, reduces the reheating process of the condensed water, saves energy, reduces emission and reduces the waste of heat energy conversion; the waste gas heat exchange device and the flash evaporation exhaust device are isolated by utilizing a back pressure valve and a check valve to ensure that the two devices run safely and stably; the utility model discloses recycle's steam gets into jet mixer and middling pressure steam mixing after heat accumulation buffer and steam pressure boost, becomes suitable low pressure steam and recycles, has greatly improved thermal utilization ratio, compares tradition.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the process of the present invention.
Description of the figures the symbols:
1. an exhaust gas cooling device; 10. an exhaust gas heat exchanger; 11. a first flue gas valve; 12. a second flue gas valve; 13. a third flue gas valve; 14. a balancing valve; 15. a temperature transmitter; 16. an automatic steam cleaning device; 17. an overflow oil discharge device; 2. a flash evaporation exhaust device; 20. a flash tank; 21. a flow meter; 22. a back pressure valve; 23. a pneumatic steam valve; 24. a check valve; 25. a circulating water pump; 26. an overflow backpressure tank; 27. a water inlet pneumatic valve; 28. a pressure transmitter; 29. a flash tank pressure transmitter; 3. a heat storage buffer device; 4. a steam booster; 5. a multi-nozzle pressure matcher; 51. a jet mixer; 52. a pressure regulating valve; 6. setting machine; 61. a condenser; 62. a drain valve; 63. adjusting a valve; 64. a water discharge pneumatic valve; 65. a condensate water tank; 7. a medium pressure steam pipe network; 8. low-pressure steam pipe network.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, so that those skilled in the art can easily implement the present invention.
Example 1:
as shown in fig. 1, the utility model discloses a waste gas heat energy recovery device, it is equipped with waste gas heat transfer device 1, flash evaporation exhaust apparatus 2, heat accumulation buffer device 3, steam booster 4 and multiinjector pressure adapter 5, waste gas cooling device 1 is equipped with waste gas cooler 10, first flue gas valve 11, second flue gas valve 12, third flue gas valve 13, balance valve 14 and pipeline, waste gas cooler 10 sets up on the exhaust gas pipeline of forming machine 6, waste gas heat exchanger 10 is inside to be equipped with waste gas pipeline and water pipeline, be used for reducing the exhaust gas temperature, the temperature in the heating water pipeline, waste gas heat exchanger 10 waste gas pipeline entrance point is equipped with third flue gas valve 13, the exit end is equipped with second flue gas valve 12, waste gas heat exchanger 10 still connects in parallel with first flue gas valve 11, second flue gas valve 12 and third flue gas valve 13 are used for switching the operating condition of waste gas heat exchanger 10, close second flue gas valve 12 and third flue gas valve 13 when waste gas heat exchanger 10 needs to shut down or overhaul, open first flue gas valve 11; the balance valve 14 controls the pressure difference between the flash evaporation exhaust device 2 and the heat accumulation buffer device 3. And the rear end of the second flue gas valve 12 and the front end of the third flue gas valve 13 are respectively provided with a temperature transmitter 15 for monitoring the temperature change on the flue gas pipeline and controlling the opening or closing of a valve or a water pump.
Waste gas heat transfer device 1 still is equipped with automatic steam cleaning device 16 and overflow oil extraction device 17, steam cleaning device 16 installs on waste gas heat exchanger 10, waste gas heat exchanger 10 is vertical to be placed, waste gas heat exchanger 10 waste gas pipeline entrance point sets up at the top, the exit end sets up in the bottom, waste gas advances to get into waste gas heat exchanger 10 downwards through the pipeline entering entrance point, after the heat transfer, flow from waste gas heat exchanger 10 waste gas pipeline exit end, through U type pipeline discharge, overflow oil extraction device 17 installs at waste gas heat exchanger 10 waste gas pipeline exit end U type pipeline minimum. Waste gas in the waste gas heat exchanger 10 waste gas pipeline flows through the waste gas heat exchanger 10 from top to bottom inside, and the oil in the oily waste gas cools and condenses to form oil drips and attach to the waste gas heat exchanger 10 after the heat transfer, and steam cleaning device 16 utilizes steam to clean the oil drips on the cold heat transfer of waste gas 10, makes oil drips flow down along the waste gas pipeline exit end of waste gas heat exchanger 10 and gets into overflow oil discharge device 17, and overflow oil discharge device 17 passes through liquid seal waste gas, and the excessive fluid of accumulation discharges by oneself.
A water pipeline of the waste gas heat exchanger 10 is connected with a flash evaporation exhaust device 2 through a pipeline, the flash evaporation exhaust device 2 is provided with a flash evaporation tank 20, the flash evaporation tank 20 is provided with a water outlet, a water inlet, a steam outlet, a water replenishing port and an overflow port, a circulating water pump 25 is arranged at the water outlet of the flash evaporation tank 20, a check valve 24 is arranged at the front end of the circulating water pump 25, the check valve 24 is connected with the waste gas cooler 10 through a pipeline, and low-temperature water is used for cooling waste gas for the waste gas heat exchanger 10; a back pressure valve 22 is arranged at a water inlet of the flash tank 20, a flowmeter 21 is arranged at the front end of the back pressure valve 22, the front end of the flowmeter 21 is connected with the waste gas heat exchanger 10 and used for recycling circulating water heated by waste water, the flowmeter 21 provides a temperature signal to operate the flow, a shutdown system is reduced to a set temperature and then shuts down the circulating water pump 25, the back pressure valve 22 provides back pressure for a water pipeline of the waste gas cooling device 1 to ensure that the water pipeline has certain pressure, and a pressure transmitter 28 is arranged between the flowmeter 21 and the back pressure valve 22 and used for converting pressure parameters in the circulating pipeline into electric signals to control the action of the valve and the circulating water pump 25; the top of the flash tank 20 is provided with a steam outlet and a flash tank pressure transmitter 29, the steam outlet is communicated with the gas-liquid separator 3 through a pneumatic steam valve 23 and is used for discharging steam, and the flash tank pressure transmitter 29 monitors the pressure change in the flash tank; the mouth of moisturizing of flash tank 20 communicates with the governing valve 63 of forming machine 6 through the pneumatic valve 27 that intakes, and the overflow mouth communicates with condensate tank 65 through overflow backpressure jar 26, can provide the water level of setting for flash tank 20 through governing valve 63, the pneumatic valve 27 that intakes and overflow backpressure jar 26, guarantees that flash tank 20 has sufficient water volume, can in time discharge excessive water volume simultaneously.
After forming machine 6 utilized the steam of middling pressure steam pipe network 7, discharge high temperature waste gas and high temperature comdenstion water, high temperature waste gas gets into exhaust gas cooling device 1 heating cycle water, the high temperature comdenstion water gets into the pipeline from condenser 61 and flows out, condenser 61 rear end is equipped with trap 62 in proper order, governing valve 63, drainage pneumatic valve 64 and condensate water tank 65, trap 62, governing valve 63 can be for the moisturizing of flash tank 20, the loss of replenishment steam, all change over to the high temperature comdenstion water into the flash tank 20 in the heat extraction repeatedly simultaneously, the maximum utilizes the comdenstion water heat, almost no heat runs off.
The water replenishing port on the flash tank 20 can also be connected with other condensed water with a certain temperature, so as to fully recycle the heat of the condensed water, such as the condensed water discharged by a high-temperature dyeing machine.
Steam in the flash tank 20 is discharged through the steam outlet at the top, enter into and carry out gas-liquid separation behind the vapour and liquid separator 3, the vapour and liquid separator 3 rear end is equipped with steam booster 4, the steam after the separation passes through the pressure boost of steam booster 4, steam after the pressure boost gets into multiinjector pressure adapter 5, multiinjector pressure adapter 5 utilizes jet mixer 51 with steam and the steam homogeneous mixing of middling pressure steam pipe network 7, form low pressure steam through pressure regulating valve 52 and get into low pressure steam pipe network 8, make the heat make full use of retrieving.
The quantity of exhaust gas cooling device 1 arranges according to forming machine 6 actual conditions, and a plurality of exhaust gas cooling device 1 passes through the pipeline and connects in parallel, provides used heat for flash evaporation exhaust apparatus 2.
The flash evaporation exhaust device 2, the heat storage buffer device 3 and the steam booster 4 adopt 1:1:1, the flash evaporation exhaust device 2, the heat storage buffer device 3 and the steam booster 4 form a whole machine, steam generated by the flash evaporation exhaust device 2 enters the steam booster 4 for boosting after steam-water separation through the heat storage buffer device 3, and heat is recycled.
Example 2:
similar to embodiment 1 structure in this embodiment, its flash distillation exhaust apparatus 2, heat accumulation buffer 3 and steam booster 4 quantity are inequality, and a plurality of flash distillation exhaust apparatus 2 communicate with 1 vapour and liquid separator 3 simultaneously, and heat accumulation buffer 3 is buffer vapour and liquid separator, and steam-water separation later gathers, gets into the low pressure pipe network through steam booster 4 and multiinjector pressure adapter 5.
Example 3:
as shown in fig. 2, the present embodiment provides an exhaust gas heat energy recovery method using the exhaust gas heat energy recovery apparatus disclosed in embodiment 1 or 2, comprising the steps of:
1. condensed water generated by the setting machine directly enters a flash evaporation exhaust device to buffer, release pressure and supplement water, the condensed water is supplied to a waste gas cooling device for heating through a circulating water pump, and the circulating water absorbs heat in waste gas of the setting machine through the waste gas cooling device and is heated;
2. the heated circulating water enters a flash evaporation exhaust device for flash evaporation, the water-containing steam enters a steam booster for pressurization and discharge after steam-water separation of a heat storage buffer device, and the low-pressure steam discharged by pressurization of the steam booster is directly used or is lifted again for heating and pressurization to be used as medium-pressure steam;
3. after the flash-evaporated circulating water is supplemented with the water by the condensed water of the setting machine, the circulating pump returns to the waste gas cooling device to repeatedly absorb the heat of the waste gas, the steps 1-3 are repeated, and the excessive condensed water in the flash evaporation exhaust device 2 is discharged through overflow.
This embodiment comdenstion water source is not limited to forming machine self and produces, also can be other devices that can produce the comdenstion water, and the comdenstion water is after the heat transfer flash distillation, and the steam booster pressure boost of production is back, supplies vapour to the equipment that needs to use steam, and the equipment that uses steam includes but not limited to forming machine itself.
The waste gas heat exchange device is arranged on the setting machine, waste heat recovery is carried out as soon as hot waste gas goes out of the setting machine, the temperature of the waste gas is reduced, heat loss is reduced, and the waste heat recovery efficiency is high; the utility model adopts the condensed water on the setting machine as the water supplement of the flash tank, and fully recycles the heat of the condensed water; the waste gas cooling device and the flash evaporation exhaust device are isolated by utilizing a back pressure valve and a check valve to ensure that the two devices run safely and stably; the utility model discloses recycle's steam gets into jet mixer and middling pressure steam mixing after heat accumulation buffer and steam pressure boost, becomes suitable low pressure steam and recycles, has greatly improved thermal utilization ratio.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, as various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the scope defined by the claims of the present invention shall be within the protection scope of the present invention.
Claims (8)
1. A waste gas heat energy recovery device is characterized in that a waste gas heat exchange device is arranged at the outlet of a waste gas exhaust outlet of a printing and dyeing setting machine, a flash exhaust device, a heat storage buffer device and a steam booster are arranged at the rear end of the waste gas heat exchange device, the waste gas heat exchange device is provided with a waste gas pipeline and a water pipeline for heat exchange, the waste gas heat exchange device is communicated with the pipeline of the flash exhaust device through the water pipeline to form a water circulation pipeline, a circulating water pump and a back pressure valve are respectively arranged on the two pipelines of the water circulation pipeline, the circulating water pump conveys circulating water from the flash exhaust device to the waste gas heat exchange device, the flash exhaust device is provided with a flash tank, the flash tank is provided with a water replenishing port, and the flash tank is communicated with condensate water of condensate water generating equipment through a pipeline; the flash evaporation exhaust device is communicated with the heat storage buffer device through a steam pipeline, and the heat storage buffer device is communicated with the steam booster through a steam pipeline.
2. The waste gas heat energy recovery device of claim 1, wherein the waste gas heat exchange device is provided with a flue gas valve at the inlet end and the outlet end of the waste gas pipeline, and the waste gas heat exchange device is connected with a bypass in parallel, and the bypass is provided with a flue gas valve.
3. The waste gas heat energy recovery device of claim 2, wherein the waste gas in the waste gas heat exchange device flows from top to bottom, and an overflow oil discharge device is arranged at the lowest point of the outlet end of the waste gas heat exchange device to discharge oil.
4. The exhaust gas heat energy recovery device of claim 2, wherein the exhaust gas heat exchange device is further provided with an automatic steam scavenging device for scavenging oil in the exhaust gas.
5. The waste gas heat energy recovery device of claim 1, wherein the water circulation pipeline is further provided with a check valve, a balance valve, a flowmeter and a pressure transmitter, the check valve is arranged at one end of the outlet of the circulating pump, and the balance valve, the flowmeter and the pressure transmitter are arranged between the back pressure valve and the waste gas heat exchange device.
6. The waste gas heat energy recovery device of claim 1, further comprising an overflow back pressure tank, wherein the flash evaporation exhaust device is further provided with an overflow port, and the overflow port is communicated with the overflow back pressure tank.
7. The exhaust gas heat energy recovery device of claim 1, wherein the flash evaporation exhaust device, the heat storage buffer device and the steam booster are equal in number and are assembled into a whole.
8. The exhaust heat energy recovery device of claim 1, wherein the number of the heat storage buffers and the number of the flash evaporation exhaust devices are equal, the number of the flash evaporation exhaust devices is larger than that of the heat storage buffers, and the heat storage buffers are simultaneously communicated with more than two flash evaporation exhaust devices.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221012662 | 2022-04-27 | ||
| CN2022210126627 | 2022-04-27 |
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| Publication Number | Publication Date |
|---|---|
| CN217979961U true CN217979961U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221832557.8U Active CN217979961U (en) | 2022-04-27 | 2022-07-14 | Waste gas heat energy recovery device |
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| CN (1) | CN217979961U (en) |
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2022
- 2022-07-14 CN CN202221832557.8U patent/CN217979961U/en active Active
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