Waste gas purification method for liquid-containing hazardous chemicals
A technology for purification of waste gas and hazardous chemicals, applied in chemical instruments and methods, separation methods, separation of dispersed particles, etc., can solve problems such as easy scaling, and achieve the effects of not easy scaling, good technical effects, and easy maintenance
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Embodiment 1
[0020] A packing type purification device for waste gas treatment of liquid-containing hazardous chemicals, such as figure 1 As shown, it includes a ring-shaped processing chamber, a gas processing chamber, and a gas discharge buffer chamber. Between the inner and outer shells is a ring-shaped processing chamber for waste gas containing liquid hazardous chemicals. The upper end of the chamber is closed, and the side of the shell is provided with a gas phase inlet. The waste liquid collection tank is connected, and the side of the inner shell is provided with openings to connect with the gas treatment chamber; the gas treatment chamber is composed of a barrel-shaped structure formed by the inner shell, the upper part is provided with a liquid phase inlet and is directly connected to the liquid distributor, and the middle part is provided with a filler Layer, packing layer and liquid distributor are in close contact with the inner shell wall, the bottom is a liquid receiving tank...
Embodiment 2
[0027] According to the conditions and steps described in Embodiment 1, only the gas phase inlet is in vertical contact with the outer cylinder wall, as figure 2 shown. The main component of hazardous chemicals exhaust gas is hydrogen sulfide with a concentration of 5000ppm, and the main liquid phase components are water mist and gasoline mist droplets, accounting for about 50% of the total mass fraction. The diameter ratio of the annular processing chamber to the gas processing chamber is 2:1. The packing is Mellapak 500Y stainless steel structured packing. The toxic gas decontamination agent or absorbent is 4% sodium hydroxide solution. The mass flow ratio of the toxic gas decontamination agent or absorbent to the waste gas of liquid hazardous chemicals is 100:1. The height of the packing layer is 90% of the total height of the gas processing chamber.
[0028] During operation, the liquid-containing hazardous chemical waste gas enters the annular processing chamber radi...
Embodiment 3
[0033] According to the conditions and steps described in Example 1, the main component of hazardous chemicals waste gas is hydrogen sulfide with a concentration of 5000ppm, and the main components of the liquid phase are water mist and gasoline mist, accounting for about 20% of the total mass fraction. The diameter ratio of the annular processing chamber to the gas processing chamber is 2:1. The packing is Mellapak 500Y stainless steel structured packing. The toxic gas decontamination agent or absorbent is 4% hydrogen peroxide solution. The mass flow ratio of the toxic gas decontamination agent or absorbent to the waste gas of liquid hazardous chemicals is 100:1. The height of the packing layer is 90% of the total height of the gas processing chamber.
[0034] The liquid content of the treated gas is reduced to 2.1%, and the hydrogen sulfide concentration is 31ppm.
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