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Filter for chlorothalonil production line

A filter and production line technology, applied in the fields of dispersed particle filtration, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of easy to be worn into fine powder, small powder storage capacity, system pressure rise, etc., and achieve the ability of cleaning dust. The effect of strengthening, improving production efficiency and reducing the number of maintenance

Pending Publication Date: 2017-12-26
JIANGSU XINHE AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the catalyst in the fluidized bed uses fine-grained activated carbon, it is easily worn into fine powder during the fluidization process. Although the airflow with fine particles is separated by the internal cyclone separator, some fine powder is still brought to the fixed bed and The cover accumulates on the fixed bed, and part of the fine powder penetrates into the fixed bed and the cover resistance increases rapidly, which causes the system pressure to rise rapidly, forcing the shutdown to clean. Although many domestic factories add a bag filter between the fluidized beds, due to common During the filtration process of the bag filter, the internal and external pressure difference is large, the powder storage capacity is small, and the pressure increases rapidly. After reaching a certain pressure, it will be broken, and the filtered fine-grained activated carbon will still enter the fixed bed, causing the system pressure to rise rapidly and forcing the machine to stop

Method used

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  • Filter for chlorothalonil production line
  • Filter for chlorothalonil production line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A filter used in a chlorothalonil production line, its main structure schematic diagram is as follows figure 1 As mentioned above, the schematic diagram of the top view structure is as follows figure 2 As shown, the filter includes a cylinder 4, an upper head 11 at the top of the cylinder and a cone 2 at the bottom. A flower plate 8 is arranged on the upper part of the filter, and a flower plate hole is opened on the flower plate 8. The flower plate 8 Divide the filter into an upper clean air chamber and a lower dust chamber. A filter bag 6 is provided in the dust chamber, and the opening of the filter bag is connected to the flower plate hole. The upper part of the flower plate 8 is provided with a nozzle 9. The nozzle 9 is connected to the external recoil gas injection assembly.

[0026] The dust chamber is also provided with a cage frame 7, the filter bag 6 is supported by the cage frame 7, and the top of the cage frame 7 is provided with a Venturi tube. The outsi...

Embodiment 2

[0030] The structure of the filter of this embodiment is basically the same as that of Embodiment 1.

[0031] The cylinder of the filter is cylindrical, with a diameter of 1300mm and a height of 5000mm; it is made of stainless steel with a wall thickness of 15mm, and the heat-conducting oil is passed through the jacket for heat preservation. The number of filter bags in the filter is 32, 6 high-temperature resistant gas pipelines, 6 solenoid valves, and the material of the filter bags is P84, the length of the filter bags is 4000mm, and the diameter is 50mm. The pulse length and pulse width are 10s and 20ms, respectively. The backflushing pressure is 0.5Mpa, and the filtration efficiency reaches 95%.

Embodiment 3

[0033] The structure of the filter of this embodiment is basically the same as that of Embodiment 1.

[0034] The cylinder of the filter is cylindrical, the diameter of the cylindrical filter is 2000mm, and the height is 6000mm; it is made of stainless steel, the wall thickness is 20mm, and the heat-conducting oil is kept in the jacket. The number of filter bags in the filter is 64, 8 high-temperature resistant gas pipelines, and 8 solenoid valves. The filter bag material is made of P84 material, the length of the filter bag is 500mm, and the diameter is 300mm. The pulse length and pulse width are 30s and 20ms, respectively. The backflushing pressure is 0.7Mpa, and the filtration efficiency reaches 97%.

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Abstract

The invention relates to a filter for a chlorothalonil production line. The filter comprises a cylinder, an upper sealing head on the top of the cylinder and a cone at the bottom. A tube bundle board is arranged on the upper part in the filter. The tube bundle board is provided with multiple tube bundle board holes. The tube bundle board divides the filter into an upper gas purification chamber and a lower dust gas chamber. Multiple filter bags are arranged in the dust gas chamber. The openings of the filter bags are connected to the tube bundle board. Multiple nozzles are arranged on the upper part of the tube bundle board and are connected to a backlash gas ejection assembly. Compared with the prior art, the filter has a strong cleaning capability and high filtration efficiency, greatly prolongs the working time of a single set of device, reduces the inspection frequency, increases the production efficiency and solves the problem that the system pressure rises and working time is short because of the accumulation of the fixed bed catalyst powder. Compared with the common bag-type filter, the filter provided by the invention has great advantages.

Description

technical field [0001] The invention relates to a pesticide production device, in particular to a filter used in a chlorothalonil production line. Background technique [0002] Chlorothalonil is a high-efficiency, low-toxicity, broad-spectrum, low-residue protective fungicide, which is widely used in the control of fungal diseases in agriculture and forestry, especially in vegetables, fruits and other economic crops. According to Japanese data, chlorothalonil can prevent and control fifty-two diseases of more than thirty kinds of crops. In addition, chlorothalonil also has important uses in the anti-mold industry, such as the manufacture of anti-mold paint, anti-mold wallpaper, anti-mold of electrical appliances, and anti-mold of apples and wood. The production scale of chlorothalonil in China is constantly expanding, and it has become one of the high-quality large-tonnage pesticide varieties in the world. [0003] The fluidized bed production process is mostly used abroad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/02B01D46/04B01D46/42B01D46/48
CPCB01D46/023B01D46/04B01D46/4263B01D46/4281B01D46/48B01D46/71
Inventor 王春云王海波胡清禚文峰
Owner JIANGSU XINHE AGROCHEM