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Denitration catalyst regeneration cyclic utilization method

A denitration catalyst and catalyst technology, which are applied in catalyst regeneration/reactivation, chemical instruments and methods, physical/chemical process catalysts, etc. Cycle efficiency, ensure catalytic efficiency, and ensure the effect of qualified rate

Inactive Publication Date: 2018-06-01
GUANGZHOU DEV GRP CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, with the prolongation of the use time of the catalyst, the catalyst will gradually deactivate. The deactivated catalyst cannot achieve the effect of catalyzing the denitrification reaction, but it is wasteful to throw away the deactivated catalyst. Now, there are also denitrification Catalyst regeneration and recycling methods, but these methods do not separate qualified catalysts from unqualified recycled catalysts, and are directly used again in the denitrification reaction without guaranteeing their pass rate, which will greatly affect the denitrification reaction. efficiency

Method used

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  • Denitration catalyst regeneration cyclic utilization method
  • Denitration catalyst regeneration cyclic utilization method

Examples

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Embodiment 1

[0028] Such as figure 1 As shown, this embodiment provides a method for denitrification catalyst regeneration and recycling, including:

[0029] Step 1, soot blowing, use a vacuum cleaner to suck off the floating ash on the surface of the catalyst, or use compressed air to blow off the floating ash on the surface of the catalyst;

[0030] Step 2, washing with water, soaking the catalyst in deionized water, and starting ultrasonic cleaning to remove stains on the surface of the catalyst;

[0031] Step 3, pickling, soaking the catalyst in the pickling solution;

[0032] Also includes the following steps:

[0033] Step 4, first-level drying, placing the catalyst in a first-level drying furnace, and performing a first-level drying treatment;

[0034] Step 5, active implantation, immersing the catalyst in the active agent, performing active implantation, realizing activity recovery, and obtaining a regenerated catalyst;

[0035] Step 6, secondary drying, put the regenerated cat...

Embodiment 2

[0044] The difference between this example and Example 1 lies in that the temperature of the primary drying is 320° C. and the drying time is 80 minutes.

Embodiment 3

[0046] The difference between this example and Example 1 is that the secondary drying temperature is 360° C. and the drying time is 100 minutes.

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Abstract

The invention discloses a denitration catalyst regeneration cyclic utilization method. By using the method, the activity recovery of an inactivated denitration catalyst can be realized and the activity detection is performed on the denitration catalyst; the effective screening on unqualified and qualified catalysts is realized; the qualification rate of the finally obtained regenerated catalyst iseffectively ensured; the catalysis efficiency of the catalyst during the denitration catalysis for a next time is ensured; the regeneration cyclic utilization circulation efficiency of the whole denitration catalyst is improved.

Description

technical field [0001] The invention relates to a method for regeneration and recycling, in particular to a method for regeneration and recycling of a denitrification catalyst. Background technique [0002] Nowadays, in order to improve people's living environment and improve people's quality of life, our country has designated and implemented various environmental protection policies and measures, among which, in order to increase the control of polluting gas NO x The relevant standards will be promulgated accordingly. Since the power plant is NO x In order to reduce environmental pollution, it is necessary to carry out denitrification treatment when discharging flue gas. [0003] The mainstream technologies in the denitrification treatment methods are selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR). Since the selective non-catalytic reduction (SNCR) method is too dependent on temperature and the denitrification efficiency is low, the actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/96B01D53/86B01J38/60B01D53/56
CPCB01D53/8625B01D53/96B01D2251/2062B01J38/60
Inventor 李清伍郑龙阔邹卫平
Owner GUANGZHOU DEV GRP CO LTD
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