Online denitration catalyst regeneration device and method

Abstract

The invention relates to an online denitration catalyst regeneration device and method. At present, offline operation is usually adopted, and lots of manpower and material resources and financial resources are needed to be input. The online denitration catalyst regeneration device includes a denitration device and rake type steam soot blowers and is characterized by further including ultrasonic transmitters, pressure sensors, an ultrasonic generator and a central control system, wherein the ultrasonic transmitters and the pressure sensors are both fixed to steam branch pipes of the rake type steam soot blowers. The method comprises the following steps that if the difference of upper-layer and lower-layer pressure parameters in the denitration device is larger, no obvious improvement is obtained before and after the rake type steam soot blowers operate and the denitration effect of the denitration device is reduced somewhat, it means that a denitration catalyst is blocked and inactive, and an ultrasonic system is started to perform online denitration catalyst regeneration till the regeneration effect meets the requirements. The online denitration catalyst regeneration device is simple in structure, reasonable in design, low in cost and capable of saving energy and reducing the consumption.

Description

technical field [0001] The invention relates to an online regeneration device and method for a denitrification catalyst, belonging to the technical field of air pollution control. Background technique [0002] With the increasingly stringent national environmental protection policies, domestic thermal power units in service and new thermal power units are equipped or plan to be equipped with denitrification devices to ensure that the boiler NO X Discharge. At present, most of the denitrification devices installed in active thermal power units at home and abroad adopt the SCR process, which requires the use of denitrification catalysts. However, the activity of the catalysts gradually decreases during operation. Increasing, more and more deactivated catalyst will be produced, requiring catalyst replacement. For the replaced catalyst, determine the cause of catalyst deactivation and determine whether there is a possibility of regeneration of the deactivated catalyst by testi...

AI Technical Summary

Problems solved by technology

However, the processes and devices of the existing denitration catalyst on-line regeneration technology are relatively complicated, the cost is high, and the regeneration effect of the denitration catalyst is poor.

Images