An online regeneration device and method for a denitrification catalyst

A denitration catalyst and regeneration device technology, which is applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost, poor regeneration effect of denitration catalyst, complex process and device, etc. Low cost, simple device structure, and environmentally friendly process

Active Publication Date: 2018-01-19
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • An online regeneration device and method for a denitrification catalyst
  • An online regeneration device and method for a denitrification catalyst
  • An online regeneration device and method for a denitrification catalyst

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0021] Example.

[0022] see Figure 1 to Figure 3 , The denitrification catalyst online regeneration device in this embodiment includes a denitrification device 1 , a rake steam soot blower 3 , an ultrasonic transmitter 6 , a pressure sensor 7 , an ultrasonic generator 8 , ancillary facilities 9 and a central control system 10 .

[0023] The rake steam soot blower 3 in this embodiment includes a steam main pipe 4 and several steam branch pipes, and several steam branch pipes are all fixed on the steam main pipe 4, and several soot blowing holes 5 are arranged on the steam branch pipes. The type steam soot blower 3 and the denitrification device 1 are fixed, and the steam branch pipes are located in the denitrifica...

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Abstract

The invention relates to an on-line regeneration device and method of a denitration catalyst. At present, it is usually operated offline, which requires a lot of human, material and financial resources. The device of the invention includes a denitration device and a rake-type steam sootblower, and is characterized in that it also includes an ultrasonic transmitter, a pressure sensor, an ultrasonic generator and a central control system, and the ultrasonic transmitter and the pressure sensor are both fixed on the rake-type steam sootblower. on the steam branch of the appliance. The method of the invention is as follows: if the difference between the pressure parameters of the upper and lower layers in the denitration device is relatively large, the rake steam sootblower is not significantly improved before and after the operation, and the denitration effect of the denitration device is reduced to some extent, then the denitration catalyst is blocked. , deactivate, turn on the ultrasonic system, and regenerate the denitration catalyst online until the regeneration effect meets the requirements. The invention has the advantages of simple structure, reasonable design, low cost, energy saving and consumption reduction.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/88B01D53/56B01J38/00
Inventor 朱跃杨用龙蒋志强张杨杜振晏敏
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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