CN215539759U - A spray scrubbing tower for burning flue gas retreatment - Google Patents
A spray scrubbing tower for burning flue gas retreatment Download PDFInfo
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- CN215539759U CN215539759U CN202120748675.XU CN202120748675U CN215539759U CN 215539759 U CN215539759 U CN 215539759U CN 202120748675 U CN202120748675 U CN 202120748675U CN 215539759 U CN215539759 U CN 215539759U
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Abstract
The utility model discloses a spray washing tower for reprocessing incineration flue gas, which comprises a tower body, wherein the tower body is sequentially provided with a demisting area, a spraying area and a washing liquid storage area from top to bottom, the top end of the tower body is provided with a smoke outlet pipe, the demisting device is arranged inside the demisting area, the spraying device is arranged inside the spraying area, the left side of the spraying area is provided with a washing liquid supplementing device, the washing liquid storage area is internally provided with an inclined filter plate, the bottom of the filter plate is abutted against the left side wall of the washing liquid storage area, the top of the filter plate is abutted against the right side wall of the washing liquid storage area, the outer sides of the spraying area and the washing liquid storage area are sleeved with a heat preservation device, the heat preservation device is sleeved outside the tower body, the heat preservation device can maintain the temperature in the tower body within a certain range, the continuous chemical reaction in the tower body can be prevented, other waste gases are generated, and the square spraying area can enable the spraying area to be wider, the spraying effect becomes good, the structure is simple, the operation is convenient, and the use of fresh air and the exhaust emission are reduced.
Description
Technical Field
The utility model relates to a spray washing tower for reprocessing incineration flue gas.
Background
The deacidification mode mostly adopted by incineration flue gas is a dry method, a semi-dry method and a wet method treatment process and treatment equipment. Wherein, the deacidification effect of the flue gas treated by the dry method and the semi-dry method is not ideal and can not reach the European Union 2000 standard. The problems of the washing tower in the existing wet flue gas treatment technology are as follows: 1. the wet process has strict requirements on the material of the washing tower, high equipment cost and large investment. 2. The flue gas and NaOH solution are subjected to neutralization reaction, the generated Na2SO3 is unstable and reacts with SO3 in the flue gas to generate SO2 again, SO that the deacidification efficiency of the washing tower is reduced, the consumption of washing liquid is increased, and the discharge amount of sewage is increased. 3. The inlet flue of the tower body is unreasonably arranged, the flue gas can not be uniformly distributed, the flue gas is not fully contacted with the washing liquid, and the flue gas deacidification and cooling dehumidification efficiency is low. The design of a washing liquid spraying device in the tower body is imperfect, the recycling temperature of the washing liquid is continuously increased, the deacidification rate of the flue gas and the cooling and dehumidifying efficiency are continuously reduced, the energy consumption of the whole process is increased, and the discharge amount of sewage is increased
Incineration of refuse is generally carried out using incinerators, and the flue gases produced by the incinerators have a major environmental impact of dust and pollutants, including large pollutants and micro-pollutants, which are emitted into the atmosphere and are in a gaseous or vapor state. "macrocontaminants" refers to higher concentrations of substances in flue gas, expressed in mg/Nm3, such as ash, sulfur oxides (primarily sulfur dioxide, SO2), nitrogen oxides (NOx), carbon monoxide, total organic carbon, and halogen acids (primarily hydrochloric and hydrofluoric acids). "micropollutants" refer to substances at much lower concentrations, including inorganic components such as heavy metals (cadmium, calcium, mercury, lead, nickel, etc.), and organic components such as dioxins, furans, and polycyclic aromatic hydrocarbons, with emission limits expressed in g/Nm3 and even ng/Nm3 for some substances (e.g., dioxins). Dioxins are formed between 400 ℃ and 800 ℃, above which pyrolysis begins and oxygen reacts. The flue gas may be "de novo synthesized" to form dioxins between 250 ℃ and 450 ℃ when it is cooled.
The flue gas purification system comprises a bag-type dust collector, a fiber filter for removing large-particle pollutants, and a purification system. The purification system usually adopts spraying equipment, and soluble pollutants in the flue gas are absorbed by spraying solution, so that the purified flue gas can meet the emission standard of waste incineration flue gas.
However, the incinerated garbage not only comprises domestic garbage, but also comprises medical garbage, organic sludge generated by industrial and mining enterprises and the like, and smoke pollutants generated after incineration are various, and the smoke pollutants are purified only by conventional spraying equipment and can not meet the emission standard far away.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects of the prior art and provides a spray washing tower for reprocessing incineration flue gas.
A spray washing tower for reprocessing incineration flue gas comprises a tower body, wherein the tower body is sequentially provided with a demisting area, a spraying area and a washing liquid storage area from top to bottom, the top end of the tower body is provided with a smoke outlet pipe, the demisting zone is internally provided with a demisting device, the spraying zone is internally provided with a spraying device, the left side of the spraying zone is provided with a washing liquid supplementing device, the washing liquid storage zone is internally provided with an inclined filter plate, the bottom of the filter plate is abutted against the left side wall of the washing liquid storage zone, the top of the filter plate is abutted against the right side wall of the washing liquid storage zone, the outer sides of the spraying area and the washing liquid storage area are sleeved with heat preservation devices, the right side of the spraying area is provided with a purification device, the purification device is sequentially connected with a circulating device and a cooling device, the cooling device is connected with a spraying device, and a water pumping and draining device is arranged on the left side of the washing liquid storage area.
As a further improvement, the spraying device consists of a spraying pipe and a plurality of spraying nozzles, the spraying pipe is square, and the spraying pipe is provided with the plurality of spraying nozzles.
As a further improvement, the demisting device consists of a demisting water spray pipe and a wire mesh demister.
As a further improvement, the cooling device is respectively connected with the upper end and the lower end of the right side of the spraying device through two water conveying pipes.
As a further improvement, throttle valves are arranged between the washing liquid supplementing device and the spraying device and between the cooling device and the spraying device.
As a further improvement, the side surface of the washing liquid supplementing device is provided with a transparent observation window.
Has the advantages that:
this device establishes heat preservation device at the tower body overcoat, and heat preservation device can maintain the temperature in the tower body and maintain in certain extent, can prevent to continue to take place chemical reaction in the tower body, produces other waste gas, and square spraying area can make the spraying region more extensive, and the effect that sprays becomes good, simple structure, convenient operation reduces and uses fresh air and exhaust emissions, the environmental protection of being of benefit to.
Drawings
FIG. 1 is a schematic view of the general structure of a spray scrubber for incineration flue gas reprocessing;
1. the tower body 2, the demisting area 3, the spraying area 4, the demisting device 5, the spraying device 6, the cleaning solution supplementing device 7, the heat preservation device 8, the pumping and draining device 9, the filter plate 10, the cleaning solution storage area 11, the cooling device 12, the circulating device 13, the purifying device 14 and the smoke outlet pipe.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in figure 1, the spray washing tower for reprocessing incineration flue gas comprises a tower body 1, a demisting area 2, a spraying area 3, a demisting device 4, a spraying device 5, a washing liquid supplementing device 6, a heat preservation device 7, a pumping and draining device 8, a filtering plate 9, a washing liquid storage area 10, a cooling device 11, a circulating device 12, a purifying device 13 and a smoke outlet pipe 14.
The utility model provides a spray washing tower for burning flue gas retreatment, includes tower body 1, tower body 1 is from last to being equipped with in proper order down defogging district 2, spraying district 3, washing liquid storage area 10, defogging device 4 comprises defogging spray pipe, silk screen defroster, spraying device 5 comprises spray pipe, a plurality of spray nozzle, the spray pipe be square, the spray pipe on be equipped with a plurality of spray nozzle, the top of tower body 1 is equipped with out tobacco pipe 14, defogging district 2 inside be equipped with defogging device 4, spraying district 3 inside be equipped with spraying device 5, spraying district 3's left side be equipped with washing liquid supplemental device 6, be equipped with inclined filter 9 in the washing liquid storage area 10, the bottom butt of filter 9 is on the left side wall in washing liquid storage area 10, the top butt of filter 9 is on the right side wall in washing liquid storage area 10, spraying district 3 on the right side wall of washing liquid storage area 10, the, The outer side cover of washing liquid storage area 10 is equipped with heat preservation device 7, the right side of spraying area 3 be equipped with purifier 13, purifier 13 connect gradually circulating device 12, cooling device 11 links to each other with the upper and lower both ends on spraying device 5's right side respectively through two raceway, cooling device 11 link to each other with spraying device 5, the left side of washing liquid storage area 10 be equipped with drainage device 8, the side of washing liquid supplementing device 6 is equipped with transparent observation window, all is equipped with the choke valve between washing liquid supplementing device 6 and spraying device 5, between cooling device 11 and spraying device 5.
When in use, the tower body is sequentially provided with a demisting area, a spraying area and a washing liquid storage area from top to bottom.
Be equipped with square spray set in the spray zone, can follow 4 face blowout with water, the defogging spray pipe in the defogging device, the silk screen defroster filters the aqueous vapor, the washing liquid storage area after will using is saved, filter, purify, at last through circulating device recirculation to spray set in, be equipped with 2 raceway in circulating device and the spray set, through throttle valve control, impurity after the filtration in the washing liquid storage area is through taking out drainage device, realized drawing water, the function of drainage, washing liquid supplementing device carries out the washing liquid to spray set and supplyes.
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 utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A spray washing tower for reprocessing incineration flue gas is characterized by comprising a tower body, the tower body is provided with a demisting area, a spraying area and a washing liquid storage area from top to bottom in sequence, the top end of the tower body is provided with a smoke outlet pipe, the demisting zone is internally provided with a demisting device, the spraying zone is internally provided with a spraying device, the left side of the spraying zone is provided with a washing liquid supplementing device, the washing liquid storage zone is internally provided with an inclined filter plate, the bottom of the filter plate is abutted against the left side wall of the washing liquid storage zone, the top of the filter plate is abutted against the right side wall of the washing liquid storage zone, the outer sides of the spraying area and the washing liquid storage area are sleeved with heat preservation devices, the right side of the spraying area is provided with a purification device, the purification device is sequentially connected with a circulating device and a cooling device, the cooling device is connected with a spraying device, and a water pumping and draining device is arranged on the left side of the washing liquid storage area.
2. The spray washing tower for the reprocessing of the incineration flue gas as recited in claim 1, wherein said spray device is composed of a spray pipe and a plurality of spray nozzles, said spray pipe is square, and said spray pipe is provided with a plurality of spray nozzles.
3. The spray washing tower for the reprocessing of the incineration flue gas as recited in claim 1, wherein said demisting device is composed of a demisting water spray pipe and a wire mesh demister.
4. The spray washing tower for the reprocessing of the incineration flue gas as recited in claim 1, wherein the cooling device is connected with the upper end and the lower end of the right side of the spraying device through two water pipes respectively.
5. The spray washing tower for the reprocessing of the incineration flue gas according to claim 1, wherein a throttle valve is arranged between the washing liquid supplementing device and the spraying device and between the cooling device and the spraying device.
6. The spray washing tower for the reprocessing of the incineration flue gas according to claim 1, wherein a transparent observation window is arranged on the side surface of the washing liquid supplementing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120748675.XU CN215539759U (en) | 2021-04-13 | 2021-04-13 | A spray scrubbing tower for burning flue gas retreatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120748675.XU CN215539759U (en) | 2021-04-13 | 2021-04-13 | A spray scrubbing tower for burning flue gas retreatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215539759U true CN215539759U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120748675.XU Active CN215539759U (en) | 2021-04-13 | 2021-04-13 | A spray scrubbing tower for burning flue gas retreatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215539759U (en) |
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2021
- 2021-04-13 CN CN202120748675.XU patent/CN215539759U/en active Active
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