CN115646117A - VOC waste gas purification system and method for setting machine - Google Patents
VOC waste gas purification system and method for setting machine Download PDFInfo
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- CN115646117A CN115646117A CN202211323433.1A CN202211323433A CN115646117A CN 115646117 A CN115646117 A CN 115646117A CN 202211323433 A CN202211323433 A CN 202211323433A CN 115646117 A CN115646117 A CN 115646117A
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Abstract
The invention belongs to the technical field of waste gas purification, and particularly relates to a VOC waste gas purification system and a VOC waste gas purification method for a setting machine. The invention changes the traditional white-removing treatment mode of the waste gas, the energy consumption of the whole system is less, the equipment operation cost is lower, the treatment operation cost is less, and the gas discharged into the atmosphere after treatment has better sensory effect, namely the color is close to the surrounding atmosphere, thereby being beneficial to improving the environment-friendly image of enterprises.
Description
Technical Field
The invention belongs to the technical field of waste gas purification, and particularly relates to a VOC waste gas purification system and method for a setting machine.
Background
The setting machine is a common cloth processing device in the textile field, is used for drying and setting cloth, and therefore can generate waste gas with higher temperature (the temperature is more than 150 ℃) and high humidity (the relative humidity is more than 85%), and the waste gas needs to pass through
And discharging after spraying and purifying processes.
The process can make the gas discharged from chimney look less dense with naked eyes, and has been widely popularized and applied with the continuous improvement of scientific technology and the requirement of environmental protection and industrialization. However, in the traditional waste gas de-whitening treatment, steam is used for heating waste gas, a large amount of steam is needed, the energy consumption is high, the equipment operation cost is high, and large treatment and operation cost needs to be invested.
In view of this, the present invention is proposed.
Disclosure of Invention
The invention hopes to provide a system and a method for purifying VOC waste gas of a setting machine, and the specific scheme is as follows:
the utility model provides a forming machine VOC exhaust gas purification system, includes water spray set, cooling device, high-voltage electrostatic precipitator device, spray cooling who communicates in proper order and takes off white device and exhaust device, spray cooling takes off white device and includes the storehouse body, the storehouse internal a plurality of mechanisms that spray that set up side by side that are equipped with, spray the mechanism including setting up a plurality of shower heads on same water pipe, it is provided with first defogging net to spray the cooperation of mechanism one side.
The spraying mechanism is provided with at least 3, the number of the spraying heads arranged on the same water pipe in the spraying mechanism is about 9, and the water spraying angle of the spraying heads is 120 degrees, so that the white-removing and cooling of waste gas are facilitated.
Be equipped with first spray space, second in the water spray set and spray space and filter the defogging space, be equipped with a plurality of shower heads in the first spray space, be equipped with two perforated plates in the second spray space, two be equipped with a plurality of shower heads between the perforated plate, be equipped with filter screen and second defogging net in the filtration defogging space, set up the shower head and be in order to cool down the cooling to waste gas, set up the perforated plate and be in order to make the waste gas evenly distributed who flows through, can be better cool off and purification treatment (filtration and water smoke).
The cooling and temperature-reducing device is one of a tube cooler, a plate cooler or an air-cooled cooler, and the high-voltage electrostatic dust removal device is one of a high-voltage electrostatic tower or a high-voltage electrostatic dust remover.
The exhaust device comprises an induced draft fan and a chimney and is used for discharging the cooled and de-whitened smoke into the atmosphere.
One side of the spray cooling and de-whitening device is sequentially connected with a water storage tank, a tube type heat exchanger and a refrigerator, and the refrigerator is communicated with the spray cooling and de-whitening device.
A cooling tower is arranged between the tubular heat exchanger and the cooling device, and the tubular heat exchanger is communicated with the cooling device and the cooling tower to form a loop, wherein the cooling tower is an air cylinder type cooling tower, outside air is used as cooling air, and the cooling device is communicated with the cooling tower to reduce the temperature of gas to the temperature required by electrostatic treatment, remove water vapor and protect electrostatic facilities from being damaged and prevent the possibility of fire in the electrostatic tower; the tubular heat exchanger is communicated with the cooling tower, so that the circulating water flowing through the tubular heat exchanger and coming out from the spray cooling and whitening device is cooled for the first time by the water cooled by the cooling tower, the temperature of the circulating water entering the refrigerating machine is reduced, the energy consumption and the cost generated by directly cooling by the refrigerating machine are reduced, and the secondary cooling of the refrigerating machine is realized by utilizing the refrigerating function of the refrigerating machine to ensure that the circulating water entering the spray header reaches a specific temperature.
And a first circulating water pump is arranged between the water storage tank and the tube type heat exchanger, and a second circulating water pump is arranged between the cooling device and the cooling tower.
One side of the water spraying device and one side of the high-voltage electrostatic dust removal device are provided with a shared oil-water separation tank.
An operation method of a VOC waste gas purification system of a setting machine comprises the following steps:
s1: VOC exhaust flow direction in purification system
(1) The VOC waste gas generated by the setting machine is primarily purified by a water spraying device and is cooled by a cooling device;
(2) Introducing the treated waste gas into a high-voltage electrostatic dust removal device for secondary purification, and then carrying out cooling and de-whitening treatment through a spraying mechanism and a first demisting net in a spraying, cooling and de-whitening device;
(3) Finally, the smoke after cooling and whitening treatment is discharged into the atmosphere through an exhaust device;
s2: flow direction of waterway generated in purification system
(1) Cooling water sprayed out of a spray header in the spray cooling and whitening device is firstly collected and enters a water storage tank, then circulating water in the water storage tank is sent to a tubular heat exchanger by a first circulating water pump, and the circulating water is introduced into a refrigerator for secondary cooling after primary heat exchange and cooling in the tubular heat exchanger, and finally is reused for spraying water by the spray header in the spray cooling and whitening device;
(2) The water way after being subjected to heat exchange by circulating water in the tube type heat exchanger is introduced into a cooling device through a second circulating water pump, is cooled in the cooling device and then is introduced into a cooling tower for cooling, and finally returns to the tube type heat exchanger for heat exchange again;
s3: waste oil flow direction generated in the purification system
(1) Waste oil is generated when the waste gas passes through the water spraying device and the high-voltage electrostatic dust removal device;
(2) And introducing the waste oil produced by the two into the same oil-water separation tank for oil-water separation, and collecting and recycling the waste oil.
The invention has the following beneficial effects:
(1) The waste gas enters a spray cooling and de-whitening device, part of the smoke gas is condensed into water drops after being sprayed and cooled by a spray head and is adsorbed by a first de-whitening net, and the temperature of the smoke gas after multiple spray cooling and adsorption treatments is close to the ambient temperature, so that the de-whitening function is realized;
(2) The cooling device is adopted to condense part of oil smoke particles in the waste gas into water drops for settlement, so that the concentration of VOC in the waste gas is reduced, and the odor concentration of the discharged waste gas is reduced;
(3) This application has changed the tradition to waste gas and has taken off white processing mode, and entire system's energy consumption is less, and equipment operation cost is lower, and it is less to handle the working costs, and it is better to handle the gaseous sensory effect of discharging in the atmosphere after moreover, and is close with atmosphere on every side promptly in the colour, helps promoting the image of enterprise's environmental protection.
Drawings
FIG. 1 is a schematic structural diagram of a VOC waste gas purification system of a setting machine according to the present invention;
FIG. 2 is a schematic view showing a part of the structure of a VOC waste gas purification system of a setting machine of the present invention;
FIG. 3 is a schematic diagram of a part of the structure of a VOC exhaust gas purification system of a setting machine of the invention;
FIG. 4 is a process flow diagram of the VOC waste gas purification system of the setting machine of the present invention;
wherein the reference numbers: 1 is water spray set, 2 is cooling device, 3 is high voltage electrostatic precipitator device, 4 is spray cooling white device that takes off, 5 is exhaust device, 6 is the storage water tank, 7 is shell and tube heat exchanger, 8 is the refrigerator, 9 is the cooling tower, 10 is first circulating water pump, 11 is second circulating water pump, 13 is the water oil separating box, 14 is first spray space, 15 is the second spray space, 16 is for filtering the defogging space, 17 is the perforated plate, 18 is the filter screen, 19 is the second defogging net, 41 is the storehouse body, 42 is the shower head, 43 is first defogging net, 51 is the draught fan, 52 is the chimney.
Detailed Description
The present invention will be further described with reference to the following embodiments.
As shown in fig. 1-3, a forming machine VOC exhaust gas purification system, including the water spray set 1 that communicates in proper order, cooling device 2, high voltage electrostatic precipitator device 3, spray cooling and take off white device 4 and exhaust apparatus 5, spray cooling and take off white device 4 and include the storehouse body 41, the storehouse is internal to be equipped with a plurality of spray mechanisms that set up side by side, spray the mechanism and include setting up a plurality of shower heads 42 on same water pipe, spray mechanism 42 one side cooperation and be provided with first defogging net 43 (one set of spray mechanism sets up a defogging net promptly). At least 3 spraying mechanisms are generally arranged, the number of the spraying heads 42 arranged on the same water pipe in the spraying mechanisms is about 9, and the spraying angle of each spraying head 42 is set to be 120 degrees.
Be equipped with first spray space 14 in the water spray set 1, second spray space 15 and filtration defogging space 16, be equipped with a plurality of shower heads 42 in the first spray space 14, be equipped with two perforated plates 17 in the second spray space 15, be equipped with a plurality of shower heads 42 between two perforated plates 17, be equipped with filter screen 18 and second defogging net 19 in the filtration defogging space 16, it is cooling in order to lower the temperature to waste gas to set up shower head 42, it is in order to make the waste gas evenly distributed who flows through to set up perforated plate 17, can be better cool off and purification treatment (filtration and remove water smoke).
The cooling device 2 is one of a tube cooler, a plate cooler or an air-cooled cooler, and the high-voltage electrostatic dust collector 3 is one of a high-voltage electrostatic tower or a high-voltage electrostatic dust collector. The exhaust device 5 comprises an induced draft fan 51 and a chimney 52, and is used for discharging the cooled and de-whitened flue gas into the atmosphere. One side of the spray cooling and de-whitening device 4 is sequentially connected with a water storage tank 6, a tubular heat exchanger 7 and a refrigerator 8, and the refrigerator 8 is communicated with the spray cooling and de-whitening device 4.
A cooling tower 9 is arranged between the tubular heat exchanger 7 and the cooling device 2, and the tubular heat exchanger 7 is communicated with the cooling tower 9 and the cooling device 2 to form a loop, wherein the cooling tower 9 is a wind-barrel cooling tower and adopts outside air as cooling air. A first circulating water pump 10 is arranged between the water storage tank 6 and the tubular heat exchanger 7, and a second circulating water pump 11 is arranged between the cooling device 2 and the cooling tower 9. One side of the water spraying device 1 and one side of the high-voltage electrostatic dust removal device 3 are provided with a shared oil-water separation tank 13.
Examples
Utilize the system that this application provided to carry out purification treatment to forming machine VOC waste gas, process flow is as shown in figure 4, and concrete operating procedure is as follows:
s1: VOC exhaust flow direction in purification system
(1) The VOC waste gas generated by the setting machine is subjected to preliminary purification (temperature reduction, filtration and water mist removal treatment) by a water spraying device 1 and cooling treatment by a cooling device 2;
(2) The treated waste gas is introduced into the high-voltage electrostatic dust removal device 3 for secondary purification (after the high-voltage electrostatic dust removal device 3 is subjected to purification treatment, the temperature of the gas at the outlet is about 50 ℃), and then the waste gas is subjected to cooling and whitening treatment by 3 spraying mechanisms in the spraying cooling and whitening device 4 and 3 first demisting nets 43 correspondingly arranged;
(3) Finally, the cooled and de-whitened flue gas is blown into a chimney 52 through a draught fan 51 and is discharged into the atmosphere, and the temperature and the color of the cooled and de-whitened flue gas are similar to the atmospheric temperature and color;
s2: flow direction of waterway generated in purification system
(1) Cooling water sprayed out of a spray header 42 in the spray cooling and whitening device 4 is firstly collected and enters a water storage tank 6, then circulating water in the water storage tank 6 is sent to a tubular heat exchanger 7 by a first circulating water pump 10, the circulating water is subjected to primary heat exchange and cooling in the tubular heat exchanger 7 and then is introduced into a refrigerator 8 for secondary cooling, and finally the circulating water is reused for spraying water to the spray header 42 in the spray cooling and whitening device 4 (the water temperature after being cooled by the refrigerator 8 is about 5 ℃, the gas in the spray cooling and whitening device 4 is cooled by water spraying, so that the temperature of the gas is reduced to 10 ℃ to realize the whitening function);
(2) Wherein the water path after being subjected to heat exchange by the circulating water in the tubular heat exchanger 7 is introduced into the cooling device 2 through the second circulating water pump 11, is cooled in the cooling device 2 and then introduced into the cooling tower 9 for cooling, and finally returns to the tubular heat exchanger 7 for heat exchange again;
s3: waste oil flow direction generated in the purification system
(1) Waste oil is generated when the waste gas passes through the water spraying device 1 and the high-voltage electrostatic dust removal device 3;
(2) And the waste oil produced by the two is introduced into the same oil-water separation box 13 for oil-water separation, and the waste oil is collected for recycling.
The waste gas generated by the setting machine is mainly condensed into water drops through the cooling device 2 to be settled, so that the concentration of VOC in the waste gas is reduced, and the odor concentration of the discharged waste gas is reduced; then the flue gas enters a spray cooling and de-whitening device 4, part of the flue gas is condensed into water drops after being sprayed and cooled by a spray header 42 and is absorbed by a first demisting net 43, and the temperature of the flue gas after multiple spray cooling and absorption treatment is close to the temperature of the surrounding atmosphere, so that the de-whitening function is realized; this application has changed the tradition to waste gas and has taken off white processing mode, and entire system's energy consumption is less, and equipment operation cost is lower, and it is less to handle the working costs.
The foregoing is a detailed description of the preferred embodiments of the present patent, and it should be understood that this invention is not limited to the embodiments described above, but rather, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a forming machine VOC exhaust gas purification system which characterized in that: including the water spray set, cooling device, high-voltage electrostatic precipitator device, the white device of spray cooling and exhaust device that communicate in proper order, the white device of spray cooling takes off includes the storehouse body, the internal a plurality of mechanisms that spray that set up side by side that are equipped with of storehouse, spray the mechanism including setting up a plurality of shower heads on same water pipe, it is provided with first defogging net to spray the cooperation of mechanism one side.
2. A VOC exhaust gas purification system for forming machines according to claim 1, wherein: the spraying mechanism is at least provided with 3, and the water spraying angle of the spraying head is 120 degrees.
3. A VOC exhaust gas purification system for forming machines according to claim 1, wherein: the water spraying device is internally provided with a first spraying space, a second spraying space and a filtering demisting space, the first spraying space is internally provided with a plurality of spraying heads, the second spraying space is internally provided with two porous plates and two porous plates, a plurality of spraying heads are arranged between the porous plates, and the filtering demisting space is internally provided with a filter screen and a second demisting screen.
4. A VOC exhaust gas purification system for forming machines according to claim 1, wherein: the cooling and temperature-reducing device is one of a tube cooler, a plate cooler or an air-cooled cooler, and the high-voltage electrostatic dust removal device is one of a high-voltage electrostatic tower or a high-voltage electrostatic dust remover.
5. A VOC exhaust gas purification system for forming machines according to claim 1, wherein: the exhaust device comprises an induced draft fan and a chimney and is used for discharging the cooled and de-whitened smoke into the atmosphere.
6. A VOC exhaust gas purification system for forming machines according to claim 1, wherein: one side of the spray cooling and de-whitening device is sequentially connected with a water storage tank, a tube type heat exchanger and a refrigerator, and the refrigerator is communicated with the spray cooling and de-whitening device.
7. A forming machine VOC exhaust gas purification system as claimed in claim 6, wherein: and a cooling tower is arranged between the tube type heat exchanger and the cooling device, and the tube type heat exchanger is communicated with the cooling device and the cooling tower to form a loop.
8. A forming machine VOC exhaust gas purification system as claimed in claim 7, wherein: and a first circulating water pump is arranged between the water storage tank and the tube type heat exchanger, and a second circulating water pump is arranged between the cooling device and the tube type heat exchanger.
9. A setter VOC exhaust gas purification system as set forth in claim 8, wherein: one side of the water spraying device and one side of the high-voltage electrostatic dust removal device are provided with a shared oil-water separation tank.
10. A method of operating a waste gas purification system for VOC of a setting machine according to claim 9, comprising the steps of:
s1: VOC exhaust flow direction in purification system
(1) The VOC waste gas generated by the setting machine is subjected to primary purification by a water spraying device and cooling treatment by a cooling device;
(2) Introducing the treated waste gas into a high-voltage electrostatic dust removal device for secondary purification, and then carrying out cooling and de-whitening treatment through a spraying mechanism and a first demisting net in a spraying, cooling and de-whitening device;
(3) Finally, the smoke after cooling and whitening treatment is discharged into the atmosphere through an exhaust device;
s2: flow direction of water path generated in purification system
(1) Cooling water sprayed out of a spray header in the spray cooling and whitening device is firstly collected and enters a water storage tank, then circulating water in the water storage tank is sent to a tubular heat exchanger by a first circulating water pump, and the circulating water is introduced into a refrigerator for secondary cooling after primary heat exchange and cooling in the tubular heat exchanger, and finally is reused for spraying water by the spray header in the spray cooling and whitening device;
(2) The water way after being subjected to heat exchange by circulating water in the tube type heat exchanger is introduced into a cooling device through a second circulating water pump, is cooled in the cooling device and then is introduced into a cooling tower for cooling, and finally returns to the tube type heat exchanger for heat exchange again;
s3: waste oil flow direction generated in the purification system
(1) Waste oil is generated when the waste gas passes through the water spraying device and the high-voltage electrostatic dust removal device;
(2) And introducing the waste oil produced by the two into the same oil-water separation tank for oil-water separation, and collecting and recycling the waste oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211323433.1A CN115646117A (en) | 2022-10-27 | 2022-10-27 | VOC waste gas purification system and method for setting machine |
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| CN202211323433.1A CN115646117A (en) | 2022-10-27 | 2022-10-27 | VOC waste gas purification system and method for setting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771900A (en) * | 2024-02-01 | 2024-03-29 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
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- 2022-10-27 CN CN202211323433.1A patent/CN115646117A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117771900A (en) * | 2024-02-01 | 2024-03-29 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
| CN117771900B (en) * | 2024-02-01 | 2024-06-07 | 绍兴恒辉节能科技有限公司 | Industrial waste gas tail end whitening equipment and waste gas treatment process |
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