Waste gas treatment system for regeneration and calcination of catalyst

Abstract

The invention discloses a waste gas treatment system for regeneration and calcination of a catalyst. The waste gas treatment system comprises an air inlet pipe, a bag-type dust collector, an ammonia absorption tower, a centrifugal fan and an exhaust funnel which are sequentially connected in series, and the ammonia absorption tower comprises a tower body, a spraying device and a circulating device; the tower body is sequentially provided with an air inlet, an air dispersing device, a filler assembly, a dewatering device and an air outlet from bottom to top, the air inlet and the air outlet communicate with the bag-type dust collector and the centrifugal fan respectively, and the air dispersing device is connected with a swing mechanism so that the air dispersing device can change the flowing direction of waste gas under the action of the swing mechanism; and the spraying device is mounted in the tower body, is positioned above the filler assembly, and is connected with the bottom of the tower body through the circulating device so as to realize circulating liquid spraying. By adopting the system, the situation of waste gas drift in the ammonia absorption tower is reduced, the time of waste gas staying in the tower body is prolonged, and the treated gas is ensured to meet the emission requirement.

Description

Technical field [0001] The present invention relates to the technical field of exhaust gas treatment equipment, and more particularly to an exhaust gas treatment system for catalyst regeneration calcination. Background technique [0002] The reactor used a catalyst for a long time, and the focus generated by carbonization can cover the surface of the catalyst. As the catalyst surface area is reduced, the activity of the catalyst also is lowered. In order to restore the activity of the catalyst, the catalyst regeneration is carried out, and most of the catalyst regeneration is accomplished using high temperature calcination, and the catalyst is used to calcinate the catalyst using the calcining furnace. The exhaust gas with ammonia, dust is produced during the baking process, generally using centrifugal fan suction exhaust gas, and the exhaust gas is sequentially treated by the dust collector and the ammonia absorbent tower. However, the diameter of the ammonia absorbent tower in ...

AI Technical Summary

Problems solved by technology

However, the diameter of the ammonia absorption tower in the existing exhaust gas treatment system is often relatively large, and there is an exhaust gas inlet on the side of the bottom. The water of the agent is fully contacted, so that the absorption rate of the water to the gas is low, resulting in the substandard treatment of the waste gas

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