CN213885484U - Kiln gas washing device - Google Patents
Kiln gas washing device Download PDFInfo
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- CN213885484U CN213885484U CN202022677560.4U CN202022677560U CN213885484U CN 213885484 U CN213885484 U CN 213885484U CN 202022677560 U CN202022677560 U CN 202022677560U CN 213885484 U CN213885484 U CN 213885484U
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- washing tower
- perforated plate
- kiln gas
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- plate washing
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Abstract
The utility model discloses a kiln gas washing device, which comprises a perforated plate washing tower, wherein a kiln gas inlet is arranged on the perforated plate washing tower, the perforated plate washing tower is connected with a water mist separator through a cyclone washing tower, and a fan is arranged on the water mist separator; the perforated plate washing tower is a closed tank body, a kiln gas inlet is formed in the top of the perforated plate washing tower, the bottom of the perforated plate washing tower is connected with the lower portion of the cyclone washing tower, a precipitation separation box is arranged at the bottom of the cyclone washing tower, and the top of the cyclone washing tower is connected with the water mist separator; four perforated plates are arranged from top to bottom in the perforated plate washing tower, a first spray head is arranged in the perforated plate washing tower, a spray circulating pump connected with the first spray head is arranged on the outer side of the perforated plate washing tower, and the spray circulating pump is connected with the upper portion of the precipitation separation box. The utility model has the advantages of high purification rate of kiln gas dust and low water consumption, and can improve the product quality and prolong the service life of equipment.
Description
Technical Field
The utility model belongs to the kiln gas processing apparatus field of lime kiln especially relates to a kiln gas washing device of lime kiln.
Background
The kiln gas discharged by the lime kiln is used for a carbonization working section in the production of calcium carbonate after being washed. The indexes of the kiln gas discharged by the lime kiln are generally as follows: the dust content is less than 600mg/m3Sulfur dioxide less than 400mg/m3. In order to meet the requirements, the kiln gas treatment device is required to purify the kiln gas. The existing kiln gas treatment device is of a two-section type and comprises a stone packed tower, a gas-liquid separation tank and a conveying fan, wherein the stone packed tower is adopted to spray and wash kiln gas, then the kiln gas is subjected to moisture removal through the gas-liquid separation tank, and then the kiln gas is conveyed to a production line through the conveying fan for use; the existing kiln gas treatment device is too simple to treat kiln gas, so that the dust purification efficiency of the kiln gas is low, the water carrying amount is large, the whiteness of a calcium carbonate product is low, black spots exist, and the product quality is influenced; in addition, the kiln gas has large water volume, which is easy to damage the rear-stage conveying fan and shorten the service life of the equipment. Therefore, the existing kiln gas treatment device has the defects of low kiln gas dust purification rate and large water carrying amount, and can cause low product quality and short service life of equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a kiln gas washing device. The utility model has the advantages of high purification rate of kiln gas dust and low water consumption, and can improve the product quality and prolong the service life of equipment.
The technical scheme of the utility model: a kiln gas washing device comprises a perforated plate washing tower, wherein a kiln gas inlet is formed in the perforated plate washing tower, the perforated plate washing tower is connected with a water mist separator through a cyclone washing tower, and a fan is arranged on the water mist separator; the perforated plate washing tower is an airtight tank body, a kiln gas inlet is formed in the top of the perforated plate washing tower, the bottom of the perforated plate washing tower is connected with the lower portion of the cyclone washing tower, a precipitation separation box is arranged at the bottom of the cyclone washing tower, and the top of the cyclone washing tower is connected with the water mist separator.
In the kiln gas washing device, four perforated plates are arranged from top to bottom in the perforated plate washing tower, a first spray head is arranged in the perforated plate washing tower, a spray circulating pump connected with the first spray head is arranged on the outer side of the perforated plate washing tower, and the spray circulating pump is connected with the upper part of the precipitation separation box.
In the kiln gas washing device, a cyclone washing separator is arranged at the lower part of the cyclone washing tower, a gas-liquid separation plate is arranged at the upper part of the cyclone washing tower, a second spray head is arranged between the cyclone washing separator and the gas-liquid separation plate, a washing circulating pump connected with the second spray head is arranged at the outer side of the cyclone washing tower, and the washing circulating pump is connected with the upper part of the precipitation separation box.
In the kiln gas washing device, the bottom of the precipitation separation tank is connected with a slurry discharge pump.
Compared with the prior art, the utility model discloses earlier wash the dust in the kiln gas with the washing separator, reduce the dust content in the kiln gas, then further wash through whirl washing separator, the dust content in the further reduction kiln gas, the kiln gas is through twice washing, dust content greatly reduced. The utility model discloses earlier with the moisture of gas-liquid separation board in to kiln gas and carry out the first filtration, the moisture of reuse water smoke separator in to kiln gas carries out the filtration of second for steam content greatly reduced in the kiln gas, the area water yield of kiln gas is little. Because the kiln gas dust content of the treatment of the utility model is low and the water carrying amount is small, the whiteness of the calcium carbonate product can be improved, and the black spots are reduced, thereby improving the product quality. In addition, the kiln gas has small water carrying amount, is not easy to damage a rear-stage conveying fan, and can prolong the service life of equipment. Therefore, the utility model has the advantages of the kiln gas dust purification rate is high and take the water yield to hang down, can improve product quality and improve equipment life.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figures are: 1-perforated plate washing tower, 2-cyclone washing tower, 3-water mist separator, 4-fan, 5-precipitation separation box, 6-spray circulating pump, 7-washing circulating pump, 8-slurry discharge pump, 10-kiln gas inlet, 11-perforated plate, 12-first spray header, 20-cyclone washing separator, 21-second spray header, and 22-gas-liquid separation plate.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. A kiln gas washing device is shown in figure 1 and comprises a perforated plate washing tower 1, a kiln gas inlet 10 is formed in the perforated plate washing tower 1, the perforated plate washing tower 1 is connected with a centrifugal water mist separator 3 through a cyclone washing tower 2, a fan 4 is arranged on the water mist separator 3, and the fan 4 is a Roots fan.
The perforated plate washing tower 1 is an airtight tank body, a kiln gas inlet 10 is formed in the top of the perforated plate washing tower 1, the bottom of the perforated plate washing tower 1 is connected with an inlet in the lower portion of the cyclone washing tower 2, a precipitation separation box 5 is arranged at the bottom of the cyclone washing tower 2, and the top of the cyclone washing tower 2 is connected with the water mist separator 3.
Four perforated plates 11 are arranged from top to bottom in the perforated plate washing tower 1, a first spray header 12 is arranged in the perforated plate washing tower 1, a spray circulating pump 6 connected with the first spray header 12 is arranged on the outer side of the perforated plate washing tower 1, and the spray circulating pump 6 is connected with the upper part of the precipitation separation box 5.
The lower part of the cyclone washing tower 2 is provided with a second-stage cyclone washing separator 20, the upper part of the cyclone washing tower 2 is provided with a gas-liquid separation plate 22, a second spray header 21 is arranged between the second-stage cyclone washing separator 20 and the gas-liquid separation plate 22, the outer side of the cyclone washing tower 2 is provided with a washing circulating pump 7 connected with the second spray header 21, and the washing circulating pump 7 is connected with the upper part of the precipitation separation box 5.
The bottom of the precipitation separation tank 5 is connected with a slurry discharge pump 8.
The working principle is as follows: kiln gas and a small amount of washing water are mixed and enter the perforated plate washing tower 1 from the kiln gas inlet 10, the kiln gas is in mixed contact with the water, dust in the kiln gas is dissolved in water flow, the dust is washed from top to bottom and then enters the rotational flow washing tower 2, and the perforated plate 11 plays a role in delaying the water flow speed.
Kiln gas entering the cyclone washing tower 2 rises under the suction effect of the fan 4 and passes through the second-stage cyclone washing separator 20, water sprayed from the second spray header 21 enters the second-stage cyclone washing separator 20 to further wash the kiln gas, residual dust in the kiln gas and water are mixed and enter the precipitation separation box 5, part of water vapor mixed in the kiln gas upwards passes through the gas-liquid separation plate 22, the water vapor content in the kiln gas is reduced, and the kiln gas after the water vapor is reduced enters the water mist separator 3.
The kiln gas entering the water mist separator 3 is further separated into water vapor in the water mist separator 3, so that the kiln gas is dried, and the dried kiln gas is conveyed to a carbonization working section in the production of calcium carbonate under the action of the fan 4.
The mixture of the dust and the water entering the precipitation separation box 5 is subjected to dry-wet separation after precipitation, and the dust is formed into slurry to be deposited at the bottom of the precipitation separation box 5 and discharged under the action of a slurry discharge pump 8.
The clear water at the upper part of the precipitation separation box 5 is extracted by the spray circulation pump 6, enters the perforated plate washing tower 1 from the first spray head 12, and is combined with the dust in the kiln gas again, so that the water consumption is reduced.
The washing circulating pump 7 pumps the clean water at the upper part of the precipitation separation box 5 and the clean water is discharged from the second spray header 21.
The utility model has the advantages of high purification rate of kiln gas dust and low water consumption, and can improve the product quality and prolong the service life of equipment.
Claims (4)
1. A kiln gas washing device is characterized in that: the device comprises a perforated plate washing tower (1), wherein a kiln gas inlet (10) is formed in the perforated plate washing tower (1), the perforated plate washing tower (1) is connected with a water mist separator (3) through a cyclone washing tower (2), and a fan (4) is arranged on the water mist separator (3); the perforated plate washing tower (1) is an airtight tank body, a kiln gas inlet (10) is formed in the top of the perforated plate washing tower (1), the bottom of the perforated plate washing tower (1) is connected with the lower portion of the cyclone washing tower (2), a precipitation separation box (5) is arranged at the bottom of the cyclone washing tower (2), and the top of the cyclone washing tower (2) is connected with the water mist separator (3).
2. The kiln gas scrubbing apparatus of claim 1, wherein: four perforated plates (11) are arranged from top to bottom in the perforated plate washing tower (1), a first spray header (12) is arranged in the perforated plate washing tower (1), a spray circulating pump (6) connected with the first spray header (12) is arranged on the outer side of the perforated plate washing tower (1), and the spray circulating pump (6) is connected with the upper portion of the precipitation separation box (5).
3. The kiln gas scrubbing apparatus of claim 1, wherein: the lower part of the cyclone washing tower (2) is provided with a cyclone washing separator (20), the upper part of the cyclone washing tower (2) is provided with a gas-liquid separation plate (22), a second spray header (21) is arranged between the cyclone washing separator (20) and the gas-liquid separation plate (22), the outer side of the cyclone washing tower (2) is provided with a washing circulating pump (7) connected with the second spray header (21), and the washing circulating pump (7) is connected with the upper part of the precipitation separation box (5).
4. The kiln gas scrubbing apparatus of claim 1, wherein: the bottom of the precipitation separation box (5) is connected with a slurry discharge pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022677560.4U CN213885484U (en) | 2020-11-18 | 2020-11-18 | Kiln gas washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022677560.4U CN213885484U (en) | 2020-11-18 | 2020-11-18 | Kiln gas washing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213885484U true CN213885484U (en) | 2021-08-06 |
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ID=77119857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022677560.4U Active CN213885484U (en) | 2020-11-18 | 2020-11-18 | Kiln gas washing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213885484U (en) |
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2020
- 2020-11-18 CN CN202022677560.4U patent/CN213885484U/en active Active
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