CN-224222171-U - Device for regenerating denitration catalyst

Abstract

The utility model discloses a device for regenerating a denitration catalyst, and relates to the technical field of catalysts. The technical scheme includes that the device comprises a cleaning tank and a wastewater treatment tank, a catalyst to be regenerated and a cleaning agent are placed in the cleaning tank, a bubbler, a pH meter I and a conductivity meter are arranged in the cleaning tank, the cleaning tank is connected with the wastewater treatment tank through a pipeline, the wastewater treatment tank is connected with a sewage discharge pipeline and is connected with a flocculant storage tank through a pipeline, and the cleaning tank and the wastewater treatment tank are respectively connected with an acid storage tank and an alkali storage tank through pipelines. According to the utility model, harmful elements in the waste catalyst are removed in a physical and chemical cleaning combined mode, and the degree of catalyst cleaning is judged according to the conductivity and the pH value detected in real time, so that the cleaning parameters are optimized, and the cleaning efficiency and the cleaning effect are improved.

Inventors

• MU SHIQUAN
• Leng Yuyan
• LI ZHIQIANG
• YU NING
• HUANG YAWEI
• WANG JINFENG
• WU TIANWEI
• ZHANG YONGSHENG
• WANG JIANZHAO
• WEI NA

Assignees

• 华电哈密环保科技有限公司

Dates

Publication Date

20260512

Application Date

20250514

Claims (9)

1. 1. The device for regenerating the denitration catalyst is characterized by comprising a cleaning tank (1) and a wastewater treatment tank (2), wherein the catalyst to be regenerated and a cleaning agent are placed in the cleaning tank (1), a bubbler (101), a pH meter I (102) and a conductivity meter 103 are arranged in the cleaning tank (1), the cleaning tank (1) is connected with the wastewater treatment tank (2) through a pipeline, the wastewater treatment tank (2) is connected with a sewage drainage pipeline (201) and the wastewater treatment tank (2) is connected with a flocculant storage tank (3) through a pipeline, and the cleaning tank (1) and the wastewater treatment tank (2) are respectively connected with an acid storage tank (4) and an alkali storage tank (5) through pipelines.
2. 2. The apparatus for denitration catalyst regeneration according to claim 1, characterized in that a heating mechanism (104) and a temperature sensor (105) are provided in the cleaning tank (1).
3. 3. The apparatus for denitration catalyst regeneration as claimed in claim 2, wherein the heating mechanism (104) employs an electric heating wire.
4. 4. The apparatus for denitration catalyst regeneration as claimed in claim 1, characterized in that an ultrasonic generator (106) is provided in the cleaning tank (1).
5. 5. The apparatus for denitration catalyst regeneration as claimed in claim 4, wherein the ultrasonic generator (106) is provided on the bottom and inner wall of the washing tank (1).
6. 6. The apparatus for denitration catalyst regeneration as claimed in claim 1, characterized in that the cleaning tank (1) is provided with a level gauge one (107).
7. 7. The apparatus for denitration catalyst regeneration as claimed in claim 1, characterized in that the wastewater treatment tank (2) is provided with a second level gauge (202).
8. 8. The apparatus for denitration catalyst regeneration as claimed in claim 1, characterized in that the wastewater treatment tank (2) is provided with a stirring mechanism (203).
9. 9. The apparatus for denitration catalyst regeneration as claimed in claim 1, wherein a pH meter two (204) is provided in the wastewater treatment tank (2).

Description

Device for regenerating denitration catalyst Technical Field The utility model relates to the technical field of catalysts, in particular to a device for regenerating a denitration catalyst. Background Denitration catalysts gradually lose their catalytic activity during long-term use, a phenomenon called catalyst deactivation. The main cause of the deactivation of the catalyst is the gradual accumulation of a series of harmful elements such As arsenic (As), thallium (Tl), phosphorus (P) and the like in the pores on the surface of the catalyst and in the interior thereof. The accumulation of these deleterious elements not only prevents effective contact of the catalyst with the reactants, but can also severely impact catalyst performance by poisoning the active sites. To solve this problem, the catalyst is generally regenerated by a cleaning method, and the existing cleaning methods are mainly divided into two main types, namely physical cleaning and chemical cleaning. The physical cleaning method can remove part of harmful elements on the surface of the catalyst to a certain extent. However, physical cleaning methods tend to be limited in effectiveness with respect to deleterious elements that penetrate into the interior of the catalyst pores or are intimately associated with the catalyst active components. Therefore, chemical cleaning methods become critical in removing these stubborn harmful elements. Chemical cleaning generally involves stripping or converting harmful elements from the surface or internal pores of the catalyst into soluble substances by chemical reactions such as oxidation, reduction, etc. using chemical reagents such as acids, alkalis, etc., thereby achieving the purpose of cleaning. However, there are still significant limitations to the current cleaning process of denitration catalysts. This process relies mainly on the experience of the operator, lacking scientific, systematic data support. For example, the time required for cleaning, the amount of chemical agent, the heating temperature during cleaning, and other key parameters are often empirically set. This empirical mode of operation results in an unstable cleaning effect and sometimes even secondary damage to the catalyst due to improper control of cleaning conditions, shortening its useful life. Therefore, in order to improve the cleaning efficiency and effect of the denitration catalyst and to extend the service life thereof, it is highly desirable to develop a device capable of precisely controlling the cleaning parameters and optimizing the cleaning process. Disclosure of utility model The utility model aims to solve the technical problems of overcoming the defects of the prior art, providing a device for regenerating a denitration catalyst, removing harmful elements in a waste catalyst in a physical and chemical cleaning combined mode, judging the degree of catalyst cleaning according to the conductivity and the pH value detected in real time, and optimizing cleaning parameters according to the degree of catalyst cleaning, so that the cleaning efficiency and the cleaning effect are improved. The technical scheme of the utility model is as follows: The device for regenerating the denitration catalyst comprises a cleaning tank and a wastewater treatment tank, wherein the catalyst to be regenerated and a cleaning agent are placed in the cleaning tank, a bubbler, a pH meter I and a conductivity meter are arranged in the cleaning tank, the cleaning tank is connected with the wastewater treatment tank through a pipeline, the wastewater treatment tank is connected with a sewage discharge pipeline and is connected with a flocculant storage tank through a pipeline, and the cleaning tank and the wastewater treatment tank are respectively connected with an acid storage tank and an alkali storage tank through pipelines. Preferably, a heating mechanism and a temperature sensor are provided in the cleaning tank. Preferably, the heating mechanism adopts an electric heating wire. Preferably, an ultrasonic generator is disposed in the cleaning tank. Preferably, the ultrasonic generator is disposed at the bottom and on the inner wall of the cleaning tank. Preferably, the cleaning tank is provided with a first liquid level meter. Preferably, the wastewater treatment tank is provided with a second liquid level meter. Preferably, the wastewater treatment tank is provided with a stirring mechanism. Preferably, a second pH meter is arranged in the wastewater treatment tank. Compared with the prior art, the utility model has the following beneficial effects: The device for regenerating the denitration catalyst disclosed by the utility model can infer the cleaning effect and the reaction process according to the pH value and the conductivity change when the catalyst is regenerated by the cleaning agent, can more accurately control the parameters such as the cleaning time, the chemical agent dosage and the like, improves the accuracy of catalyst reg