Method and system for preventing carbonate poisoning by heating catalyst in different blocks

Abstract

The invention relates to the field of industrial catalyst application, in particular to a method and system for preventing carbonate poisoning by heating a catalyst in different blocks. The method and system mainly used for preventing catalyst carbonate poisoning. The method comprises the following steps: (1) dividing the whole sectional area of a catalyst box body into a plurality of blocks or dozens or hundreds of blocks; (2) adopting a heating device to independently and circularly heat the blocks one by one; and (3) heating the waste gas subjected to catalytic reaction to a temperature suitable for instant desorption of carbonate. According to the system, the heating device is arranged on a horizontal rail. The heating device comprises a power cam driven by a motor and a frame body, an arch-shaped suspension arm is arranged on the side face of the power cam shaft, and the arch-shaped suspension arm is connected with a heating barrel with the upper end and the lower end not closed. The catalyst is heated by blocks, time periods and areas, only one or more heaters are used, the power consumption is low, and economy and reasonability are achieved.

Description

technical field [0001] The invention relates to the application field of industrial catalysts, namely a method and a system for heating catalyst blocks to prevent carbonate poisoning. In order to prevent catalyst carbonate poisoning, the method and system for heating the catalyst in different blocks and in different time periods are adopted. Not only suitable for waste incineration boilers, biomass boilers, coal-fired boilers, catalytic CO, CO 2 , and hydrocarbons, to prevent catalyst carbonate poisoning, also applicable to chemical industry, chemical fertilizer industry, petroleum refining industry to remove catalyst carbonate poisoning. Background technique [0002] In the existing technology, since the second half of the 20th century, due to the rapid development of catalytic science and technology, various catalysts have been continuously infiltrated in many fields such as chemical industry, chemical fertilizer industry, petroleum refining industry and environmental pro...

AI Technical Summary

Problems solved by technology

Taking a 600-ton boiler as an example, the exhaust gas volume per hour is nearly one million meters³, and the power consumption cost for heating from 120°C to 350°C is unacceptable

Numerous experts and scholars have published papers stating that the removal efficiency of CO, dioxin, benzene series, polycyclic aromatic hydrocarbons, VOC and other toxic and harmful carbon-containing gases in boiler exhaust gas in a short period of time is the best, but in the face of Carbonate poisoning, either using noble metal catalysts or increasing reaction temperature is not cost acceptable

Although there are tens of thousands of papers, they are actually invisible in engineering. The fundamental problem is that no effective method to prevent catalyst carbonate poisoning has been found.

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