Waste gas treatment device for screw extruder

Abstract

The invention provides a waste gas treatment device for a screw extruder, and relates to the technical field of rubber regeneration equipment. The waste gas treatment device comprises a spraying chamber, a preheating chamber and a primary combustion chamber, wherein a pipeline for communicating the spraying chamber and the preheating chamber is arranged between the spraying chamber and the preheating chamber, and a first gas supply pipe for communicating the preheating chamber and the primary combustion chamber is arranged between the preheating chamber and the primary combustion chamber; thespraying chamber is communicated with an intake pipe, a plurality of spraying heads are arranged at the top in the spraying chamber, and a preheating electric heating pipe is arranged on the inner wall of the preheating chamber; a plurality of layers of catalytic beds arranged up and down are arranged in the primary combustion chamber, a combustion electric heating pipe is arranged on the inner wall of the primary combustion chamber, and the primary combustion chamber is further connected to a first outlet pipe. A plurality of small heat transfer pipes which are parallel to each other and arearranged above the catalytic bed at the uppermost layer are further arranged in the primary combustion chamber, and penetrate through the primary combustion chamber and are communicated with a main heat transfer pipe for connecting the small heat transfer pipes. When the device is used, waste gas can be effectively treated, waste gas emission is guaranteed to be clean and free of pollution, heat generated by waste gas combustion can be fully utilized, and the energy utilization rate is increased.

Description

technical field [0001] The invention relates to the technical field of rubber regeneration equipment, in particular to a waste gas treatment device of a screw extruder. Background technique [0002] Regenerated rubber is made of waste rubber as raw material by recycling technology. The regeneration process needs to go through a desulfurization process to change the plastic state of the waste rubber particle network structure and restore its soft rubber-like structure. Therefore, the waste gas discharged from the regeneration process contains carbon dioxide, H 2 S, benzene, toluene, xylene, non-methane total hydrocarbons and other pollutants, as well as water vapor, a small amount of rubber powder particles, etc., the direct discharge of exhaust gas will affect the surrounding environment and have a foul smell. [0003] The Chinese patent with the authorized announcement number CN209519586U discloses a waste tire refining waste gas desulfurization and dust removal equipment....

AI Technical Summary

Problems solved by technology

Therefore, the waste gas discharged from the regeneration process contains carbon dioxide, H 2 S, benzene, toluene, xylene, non-methane total hydrocarbons and other pollutants, as well as water vapor, a small amount of rubber powder particles, etc., the direct emission of exhaust gas will affect the surrounding environment and have a foul smell

[0003] The Chinese patent with the authorized announcement number CN209519586U discloses a waste tire refining waste gas desulfurization and dust removal equipment. The patent solves the problem that the waste gas discharged by the existing technology contains a large amount of Sulfur, acid, dust and other harmful components, the emissions are not up to standard, which affects the living environment of residents and air quality problems, but the effect of spraying to treat exhaust gas still has certain limitations

The authorized announcement number is a waste gas treatment device disclosed in CN206285676U. Although the waste gas treatment device is processed by filtering, burning and re-filtering, most of the pollution in the waste gas is removed, and the pollution of the waste gas to the environment is greatly alleviated. , however, the exhaust gas treatment device does not make good use of the heat generated by the combustion exhaust gas in the combustion process

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