Method and system for judging and processing gas leakage of rotary valve

Abstract

The invention discloses a method for judging and processing the gas leakage of a rotary valve. The method comprises following steps: (1) introducing flue gas into an adsorption tower, adsorbing and purifying flue gas by active carbon in the adsorption tower, discharging processed flue gas, delivering the active carbon, which has adsorbed pollutants in the flue gas, to a desorption tower to carry out desorption, and after desorption, introducing the active carbon into the adsorption tower; (2) in the primary operation period of a second rotary valve, recording the frequency (F2) of the motor ofthe draught fan of a second dedusting system, and setting a display value (P2) of a second pressure meter; (3) keeping on running the second rotary valve, maintaining the value of the second pressuremeter, observing the change of the frequency of the motor of the draught fan of a second dedusting system; and (4) setting the change range of the frequency of the motor of the draught fan of the second dedusting system, if the frequency change is in the set frequency change range, judging that the second rotary valve is in a normal state; and if the frequency change exceeds the set frequency change range, judging that the gas leakage of the second rotary valve happens. The operation of the method is simple, and the method can effectively judge whether gas leakage of a rotary valve in the topor bottom of an adsorption tower happens or not.

Description

technical field [0001] The invention relates to a method for judging and treating air leakage of a rotary valve of an activated carbon system and a system for judging and treating air leakage of a rotary valve, belonging to the technical field of flue gas purification. Background technique [0002] After the sintering flue gas passes through the main exhaust fan, the discharge temperature is about 110-170 ° C, which contains SO 2 , NO x , dust, dioxins, heavy metals and other pollutants, and the activated carbon flue gas purification technology is just suitable for the sintering flue gas temperature emission range, which can realize the synergistic and efficient purification of multiple pollutants, and can simultaneously remove a variety of pollutants on a set of equipment Pollutants, achieving by-product SO 2 The utilization of resources, and this technology has the advantages of high pollutant removal efficiency, basically no consumption of water resources, and no second...

AI Technical Summary

Problems solved by technology

[0005] (1) The inside of the rotary valve cannot be seen. How to find out that the blades of the rotary valve are deformed and whether the air leakage is serious?

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