Waste gas treatment system

Abstract

The invention discloses an off-gas handling system with a primary washing tower, a secondary turbulent flushing tower and a tertiary turbulent flushing tower, wherein, the primary washing tower, the secondary turbulent flushing tower and the tertiary turbulent flushing tower are respectively equipped with a first, a second and a third heat exchangers, and the system also has an alkali liquor main pipe, a water inlet, a cooling upper water main pipe, a cooling backwater main pipe and a discharge main pipe; the primary washing tower, the secondary turbulent flushing tower and the tertiary turbulent flushing tower is respectively provided with a liquid membrane foam area, and harmful waste gas passes through the liquid membrane foam areas of the primary washing tower, the secondary turbulent flushing tower and the tertiary turbulent flushing tower in order to be purified. As the waste gas passes through the three strongly turbulent liquid membrane foam areas, the invention achieves the effect of high efficient washing. As the gas-fluid exchange is not carried out in the towers, the structures of the towers are simple, the manufacturing and the maintenance are convenient, and the height of the towers can be greatly reduced. The consumption of the raw material can be greatly reduced, and the investment can be reduced. The circulation solution sprayed out by a spraying head is spiral shaped and is fully contacted with the harmful waste gas for absorption, and the spray nozzle is unlikely to be blocked because of the large size.

Description

technical field [0001] The invention relates to an exhaust gas treatment system. Background technique [0002] During the processing of non-ferrous metals and certain chemical products, it is inevitable to produce some waste gases, such as chlorine, hydrogen chloride, nitrogen oxides, etc. These gases will pollute the environment and endanger human health. The utility model patent specification of Chinese Patent Authorization Announcement No. CN2645753Y discloses a novel chlorine gas and exhaust gas absorption device. The turbulent tower is equipped with an air inlet pipe, the other tower is equipped with an air outlet pipe, the tower is connected with an air supply pipe, the lye tank is connected with a liquid outlet pipe, and the air inlet pipe is connected with the lower part of a turbulent tower. The air supply pipe connected from one turbulence tower to another turbulence tower is connected with the air supply interlayer under the turbulence tower, and the air supply i...

AI Technical Summary

Problems solved by technology

This is a spray-type turbulent tower, the gas-liquid contact time is short, the gas-liquid exchange is uneven, and the washing efficiency is low

Moreover, the tower body of this structure is relatively high, the production cost is high, the fixing of the spiral coil in the tower is troublesome, the number of nozzles is large, and the maintenance is inconvenient

In addition, the tower body of the turbulent tower is placed on the liquid storage tank, and the liquid storage tank is easy to change

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