CN211753899U - Waste gas purifying device of pulp washer - Google Patents
Waste gas purifying device of pulp washer Download PDFInfo
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- CN211753899U CN211753899U CN202020425756.1U CN202020425756U CN211753899U CN 211753899 U CN211753899 U CN 211753899U CN 202020425756 U CN202020425756 U CN 202020425756U CN 211753899 U CN211753899 U CN 211753899U
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Abstract
The utility model relates to a pulp washer exhaust purification device belongs to pulp washer exhaust-gas treatment technical field. The waste gas purification device of the pulp washer comprises a high-efficiency chemical wet purifier, a high-density static filter is arranged above the high-efficiency chemical wet purifier, and the high-density static filter is sequentially connected with a low-temperature plasma cracking oxidation device, an exhaust funnel and a draught fan; the liquid caustic soda storage tank is connected with the high-efficiency chemical wet purifier; and a high-efficiency mixed flow nozzle is arranged in the high-density static filter and connected with a circulating water pump. The utility model has the advantages of being scientific and reasonable in design, the simple operation has reduced manufacturing cost, has improved purifying effect.
Description
Technical Field
The utility model relates to a pulp washer exhaust purification device belongs to pulp washer exhaust-gas treatment technical field.
Background
The waste gas of pulp washer in paper making industry contains complex components, generally chlorine dioxide or other chlorides, some hydrogen sulfide and thiol substances with low odor threshold, and the concentration of VOCs is generally 10-30mg/m3The temperature of the waste gas is about 75-85 ℃, and the concentration of the odor can reach more than 10000.
At present, waste gas of a pulp washer in the domestic papermaking industry is directly discharged at high altitude without any treatment measure, or non-targeted treatment equipment and a process system are adopted, so that the success cases are few, and the stable treatment effect on the waste gas is difficult to achieve.
The high-concentration impact resistance is difficult to be realized by adopting a conventional biological method; the removal efficiency of the odor concentration by a pure spraying method and a photo-oxidation method is not obvious; the investment and operation costs of the combustion method and the activated carbon adsorption method are too high, the combustion method is easy to generate dioxin, and the activated carbon adsorption method causes the treatment cost of hazardous waste to be too high, so that secondary pollution is generated.
In view of the above, it is necessary to develop a safe and efficient exhaust gas treatment device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pulp washer exhaust gas purification device, its design scientific and reasonable, the simple operation has reduced manufacturing cost, has improved purifying effect.
The waste gas purification device of the pulp washer comprises a high-efficiency chemical wet purifier, a high-density static filter is arranged above the high-efficiency chemical wet purifier, and the high-density static filter is sequentially connected with a low-temperature plasma cracking oxidation device, an exhaust funnel and a draught fan; the liquid caustic soda storage tank is connected with the high-efficiency chemical wet purifier; and a high-efficiency mixed flow nozzle is arranged in the high-density static filter and connected with a circulating water pump.
The high-density static filter is internally provided with a plurality of layers of wire meshes, preferably 3-6 layers.
And the high-density static filter is internally provided with a filler.
The thickness of each layer of the filler is 160-200 mm.
The liquid caustic soda storage tank is connected with the high-efficiency chemical wet purifier through the dosing pump.
A coil pipe is arranged in a water storage tank of the high-efficiency chemical wet-type purifier.
The exhaust gas of the pulp washer has complex components and contains hydrogen sulfide, chloride, mercaptan and the like. The single pure device is difficult to achieve standard emission. When the utility model is applied, the draught fan, the dosing pump and the circulating water pump are started, the waste gas of the pulp washer firstly passes through the high-efficiency chemical wet purifier, and most of hydrogen sulfide and chloride in the waste gas are absorbed under the action of alkali liquor, so that the odor concentration is preliminarily reduced; meanwhile, a coil is designed in the water storage tank of the efficient chemical wet-type purifier, circulating water is cooled through condensate water, and waste gas is cooled through the circulating water, wherein the temperature can be reduced from 75 ℃ to 50 ℃; the waste gas after passing through the high-efficiency chemical wet purifier contains heavier water vapor, and liquid water is removed through a high-density static filter, so that the running condition with lower relative humidity is provided for a subsequent treatment unit; then the waste gas passes through the double-medium barrier type low-temperature plasma cracking oxidation device, active particles such as high-energy electrons and free radicals and pollutants in the waste gas act in a double-medium barrier type low-temperature plasma decomposition area, so that pollutant molecules such as hydrogen sulfide and mercaptan are decomposed in a very short time, and subsequent various reactions are carried out to achieve the purpose of degrading the pollutants.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the targeted treatment effect on the waste gas of the pulp washer is proved by practical cases that the odor concentration removal rate reaches 90 percent and the exhaust completely reaches related standard indexes;
(2) the whole device has low operation costGenerally, it is 0.001-0.002 yuan/m3About 1/20 of the running cost of the combustion method and the activated carbon method;
(3) the debugging period is only 2-3 days, which is about 1/10 of the debugging period of the biological method and the combustion method;
(4) the service life is long, and can reach 5-10 years generally;
(5) safe and environment-friendly, and has no secondary pollution.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. a liquid caustic soda storage tank; 2. a dosing pump; 3. a high density static filter; 4. a filler; 5. a low-temperature plasma cracking oxidation device; 6. an induced draft fan; 7. an exhaust funnel; 8. a water circulating pump; 9. a high efficiency chemical wet scrubber; 10. a coil pipe; 11. a high-efficiency mixed flow spray head; 12. the washer exhaust.
Detailed Description
The present invention is further described with reference to the following examples, which are not intended to limit the practice of the invention.
Example 1
As shown in fig. 1, the waste gas purifying device of the pulp washer of the present invention comprises a high-efficiency chemical wet purifier 9, a high-density static filter 3 is disposed above the high-efficiency chemical wet purifier 9, and the high-density static filter 3 is sequentially connected with a low-temperature plasma cracking oxidation device 5, an exhaust funnel 7 and a draught fan 6; the liquid caustic soda storage tank 1 is connected with the high-efficiency chemical wet purifier 9; the high-density static filter 3 is internally provided with a high-efficiency mixed flow nozzle 11, and the high-efficiency mixed flow nozzle 11 is connected with the circulating water pump 8.
And 4 layers of silk screens are arranged inside the high-density static filter 3.
The high-density static filter 3 is internally provided with a filler 4.
The thickness of each layer of the filler 4 is 180 mm.
The liquid caustic soda storage tank 1 is connected with the high-efficiency chemical wet purifier 9 through the dosing pump 2.
A coil pipe 10 is arranged in the water storage tank of the high-efficiency chemical wet-type purifier 9.
The exhaust gas of the pulp washer has complex components and contains hydrogen sulfide, chloride, mercaptan and the like. The single pure device is difficult to achieve standard emission. When the utility model is applied, the draught fan 6, the dosing pump 2 and the circulating water pump 8 are started, the waste gas of the pulp washer firstly passes through the high-efficiency chemical wet purifier 9, most of hydrogen sulfide and chloride in the waste gas are absorbed under the action of alkali liquor, and the odor concentration is preliminarily reduced; meanwhile, a coil 10 is designed in a water storage tank of the efficient chemical wet-type purifier 9, circulating water is cooled through condensed water, and waste gas is cooled by utilizing the circulating water, wherein the temperature can be reduced from 75 ℃ to 50 ℃; the waste gas after passing through the high-efficiency chemical wet purifier 9 contains heavier water vapor, and liquid water needs to be removed through the high-density static filter 3, so that the running condition with lower relative humidity is provided for a subsequent treatment unit; then the waste gas passes through the double-medium barrier type low-temperature plasma cracking oxidation device 5, in the double-medium barrier type low-temperature plasma decomposition area, active particles such as high-energy electrons and free radicals and pollutants in the waste gas are acted, so that pollutant molecules such as hydrogen sulfide and mercaptan are decomposed in a very short time, and subsequent various reactions are carried out to achieve the purpose of degrading the pollutants.
The waste gas inlet odor concentration of a pulp washer is 17000 (dimensionless), the exhaust temperature is 80 ℃, and after the purification of the utility model, the odor concentration removal efficiency is 90%.
Claims (6)
1. The utility model provides a pulp washer exhaust gas purification device which characterized in that: the device comprises a high-efficiency chemical wet purifier (9), wherein a high-density static filter (3) is arranged above the high-efficiency chemical wet purifier (9), and the high-density static filter (3) is sequentially connected with a low-temperature plasma cracking oxidation device (5), an exhaust funnel (7) and an induced draft fan (6); the liquid caustic soda storage tank (1) is connected with the high-efficiency chemical wet purifier (9); the high-density static filter (3) is internally provided with a high-efficiency mixed flow nozzle (11), and the high-efficiency mixed flow nozzle (11) is connected with the circulating water pump (8).
2. A washer exhaust gas purification apparatus as claimed in claim 1, characterized in that: the high-density static filter (3) is internally provided with a plurality of layers of silk screens.
3. A washer exhaust gas purification apparatus as claimed in claim 1, characterized in that: the high-density static filter (3) is internally provided with a filler (4).
4. A washer exhaust gas purification apparatus as claimed in claim 3, characterized in that: the thickness of each layer of the filler (4) is 160-200 mm.
5. A washer exhaust gas purification apparatus as claimed in claim 1, characterized in that: the liquid caustic soda storage tank (1) is connected with the high-efficiency chemical wet purifier (9) through the dosing pump (2).
6. A washer exhaust gas purification apparatus as claimed in claim 1, characterized in that: a coil pipe (10) is arranged in a water storage tank of the high-efficiency chemical wet-type purifier (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425756.1U CN211753899U (en) | 2020-03-27 | 2020-03-27 | Waste gas purifying device of pulp washer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020425756.1U CN211753899U (en) | 2020-03-27 | 2020-03-27 | Waste gas purifying device of pulp washer |
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| Publication Number | Publication Date |
|---|---|
| CN211753899U true CN211753899U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020425756.1U Active CN211753899U (en) | 2020-03-27 | 2020-03-27 | Waste gas purifying device of pulp washer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532040A (en) * | 2022-08-30 | 2022-12-30 | 金发科技股份有限公司 | Efficient low-resistance waste gas washing device and waste gas washing method |
-
2020
- 2020-03-27 CN CN202020425756.1U patent/CN211753899U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115532040A (en) * | 2022-08-30 | 2022-12-30 | 金发科技股份有限公司 | Efficient low-resistance waste gas washing device and waste gas washing method |
| WO2024045497A1 (en) * | 2022-08-30 | 2024-03-07 | 金发科技股份有限公司 | Efficient low-resistance exhaust gas scrubbing apparatus and exhaust gas scrubbing method |
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Address after: 6 / F, building 7, Zhangjiang Industrial Park, economic development zone, Zibo City, Shandong Province 255300 Patentee after: Shuimu Qingyan ecological environmental protection (Shandong) Co.,Ltd. Address before: 6 / F, building 7, Zhangjiang Industrial Park, economic development zone, Zibo City, Shandong Province 255300 Patentee before: Shandong pailidi Environmental Technology Co.,Ltd. |