High-temperature tail gas quenching reaction tower of refuse combustion furnace

Abstract

The invention discloses a high-temperature tail gas quenching reaction tower of a refuse combustion furnace. The high-temperature tail gas quenching reaction tower comprises a tower body, wherein an anticorrosion and fireproof layer is arranged on the inner wall of the tower body; a high-temperature tail gas inlet is formed on the top of the tower body, a tail gas outlet is formed on the lower part of the tower body and a dust discharging opening is formed at the bottom of the tower body; and at least one cooling water atomizer is inserted on the top and the middle-upper part in the tower body respectively. The temperature of high-temperature tail gas can be quickly reduced to 150 to 170 DEG C, so the problem that the generation of dioxin cannot be prevented in the prior art is solved; meanwhile, an effect of removing HCL, SO2 and other harmful substances by a subsequent cloth bag dust remover is enhanced, water drops are prevented from being attached to the surface of a cloth bag and the service life of the cloth bag is prolonged. The concentration of harmful substances at the inlet of a chimney is lower than 1 / 3 or 1 / 5 of a national specified value.

Description

technical field [0001] The invention relates to a high-temperature tail gas cooling treatment device for a garbage incinerator, in particular to a high-temperature tail gas quenching reaction tower for a garbage incinerator. Background technique [0002] Now, waste incineration power generation has become the main way to deal with domestic waste in developed countries. However, waste incinerator exhaust gas contains a large amount of SO 2 , HCl and other acid gases and toxic and harmful components such as Dioxin (Dioxin) and heavy metals; especially after the problem of Dioxin was discovered, the bag filter completely replaced the electrostatic precipitator in the waste incineration device. However, at present, the domestic waste incineration tail gas is mainly treated by semi-dry method. However, there are following problems in the semi-dry method: 1, the lime slurry production system is complicated, and the investment cost is high. 2. The lime slurry conveying and spray...

AI Technical Summary

Problems solved by technology

However, there are following problems in the semi-dry method: 1, the lime slurry production system is complicated, and the investment cost is high

2. The lime slurry conveying and spraying systems are severely worn, and the energy consumption is high, and the operating cost is high in the morning

3. Due to the use of lime slurry, it is easy to cause fouling and blockage of the reaction tower and flue

4. The use of lime slurry is also easy to cause hardening on the surface of the bag

The dry harmful gas treatment method that is more commonly used in the world to form a mixed film of chemicals on the surface of the bag is an advanced method, but it still cannot prevent the formation of dioxins

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