Denitration catalyst production waste gas treatment device

Abstract

The utility model belongs to the technical field of waste gas treatment, and particularly relates to a denitration catalyst production waste gas treatment device. Comprising an electrostatic dust collector, a condenser, an acid-base absorption tower, an oxidation absorption tower, an activated carbon adsorption device and a chimney which are sequentially connected, and a waste gas condensate water outlet and a circulating cooling water outlet of the condenser are connected with a condensate water recovery pool through pipelines respectively; the device further comprises a mixing mill and roller bed type calcining equipment, and air outlets of the mixing mill and the roller bed type calcining equipment are respectively connected with the electrostatic dust collector through pipelines. By integrating multiple purification technologies, the waste gas treatment quality is remarkably improved, it is ensured that waste gas emission reaches the standard, and pollution to the environment is effectively relieved. Condensate and circulating cooling water are recycled to serve as cleaning water in the waste gas treatment process, and the resource utilization rate is increased while the equipment cleaning requirement is met through real-time adjustment of pH.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and in particular relates to a waste gas treatment device for production of denitration catalysts. Background Art

[0002] During the production process of denitrification catalysts, a large amount of waste gas will be generated due to the chemical reaction of the raw materials and the characteristics of the processing technology. These waste gases have complex components and usually contain dust, water vapor, acid and alkali components, oxidizing substances and other harmful substances. The presence of these harmful substances not only causes serious pollution to the environment, but also may pose a potential threat to the health of surrounding residents. Traditional waste gas treatment methods, such as simple filtration, adsorption or combustion, often have problems such as low treatment efficiency, high energy consumption, and high operating costs. These methods are often unsatisfactory when treating waste gases containing multiple complex components, and it is difficult to meet environmental protection standards and emission requirements. Therefore, the development of an efficient and reliable waste gas treatment device is crucial to the sustainable development of denitrification catalyst production. Utility Model Content

[0003] In view of the above shortcomings in the prior art, the purpose of the utility model is to provide a denitration catalyst production waste gas treatment device, which integrates multiple purification technologies to significantly improve the quality of waste gas treatment, ensure that waste gas emissions meet standards, and effectively reduce environmental pollution. In the process of waste gas treatment, condensate and circulating cooling water are recycled as cleaning water. Through real-time adjustment of pH, the equipment cleaning needs are met while improving resource utilization.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] The denitration catalyst production waste gas treatment device comprises an electrostatic precipitator, a condenser, an acid-base absorption tower, an oxidation absorption tower, an activated carbon adsorption device and a chimney which are connected in sequence, wherein the waste gas condensate outlet and the circulating cooling water outlet of the condenser are respectively connected to the condensate recovery pool through pipelines; and also comprises a mixing machine and a roller calcining equipment, and the gas outlets of the mixing machine and the roller calcining equipment are respectively connected to the electrostatic precipitator through pipelines.

[0006] The outlet of the activated carbon adsorption device is provided with a gas online monitor.

[0007] The outlet of the condensed water recovery pool is connected to the cleaning water inlet of the mixer and the roller calcining equipment through pipelines.

[0008] The condensate water recovery pool is provided with a pH monitoring device and a liquid level meter.

[0009] The condensate recovery pool is connected to an acid-base regulator storage tank through a pipeline, and a regulator control valve is arranged on the pipeline.

[0010] A condensate control valve is provided on the pipeline from the circulating cooling water outlet of the condenser to the condensate recovery tank.

[0011] The pH monitoring device, liquid level meter, regulator control valve and condensate control valve are electrically connected through a control system.

[0012] The working principle of the denitration catalyst production waste gas treatment device is as follows:

[0013] The waste gas generated during the mixing and calcining process of the denitrification catalyst production first enters the electrostatic precipitator through the pipeline to remove large particles of dust in the waste gas. The waste gas treated by the electrostatic precipitator enters the condenser, and the waste gas is cooled by cooling water to condense the water vapor and other condensable substances in the waste gas into liquid, and then recovered to the condensate recovery pool through the pipeline. The waste gas after condensation treatment enters the acid-base absorption tower to absorb the acidic gas (such as HCl, SO2, etc.) in the waste gas. The waste gas treated by the acid-base absorption tower enters the oxidation absorption tower, which is filled with oxidants that can react with organic matter or reducing substances in the waste gas to further purify the waste gas. After being treated by the oxidation absorption tower, the waste gas enters the activated carbon adsorption device, which uses the adsorption properties of activated carbon to adsorb and remove residual harmful substances in the waste gas. The outlet of the activated carbon adsorption device is equipped with a gas online monitor for real-time monitoring of the emission quality of the waste gas after treatment. The waste gas that meets the standards is finally discharged through the chimney.

[0014] In addition, the exhaust gas condensate produced by the condenser and the circulating cooling water are used to prepare the cleaning water. By adding acid-base regulators, the pH value of the cleaning water can be accurately adjusted to meet the specific cleaning requirements of the mixer and roller calcining equipment. At the same time, based on the real-time feedback signal of the liquid level meter, the control system controls the opening and closing of the condensate control valve to ensure that the liquid level in the condensate recovery pool remains at a safe and appropriate level.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] The denitration catalyst production waste gas treatment device described in the utility model integrates multiple waste gas purification technologies to achieve efficient and comprehensive treatment of waste gas generated in the denitration catalyst production process. Through real-time monitoring and control systems, it ensures that the emission quality of the waste gas after treatment meets the standards, greatly reducing pollution to the environment. In addition, the device also realizes the recovery and reuse of condensed water, and meets the cleaning requirements of the mixer and roller calcining equipment by accurately adjusting the pH value of the cleaning water, effectively saving water resources and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a structural schematic diagram of the waste gas treatment device for producing denitration catalysts according to the utility model;

[0018] In the figure: 1. Electrostatic precipitator; 2. Condenser; 3. Acid-base absorption tower; 4. Oxidation absorption tower; 5. Activated carbon adsorption device; 6. Chimney; 7. Condensate recovery tank; 8. Mixer; 9. Roller calcining equipment; 10. Gas online monitor; 11. pH monitoring device; 12. Liquid level meter; 13. Regulator control valve; 14. Condensate control valve. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Example 1

[0021] like Figure 1 As shown, the denitration catalyst production waste gas treatment device includes an electrostatic precipitator 1, a condenser 2, an acid-base absorption tower 3, an oxidation absorption tower 4, an activated carbon adsorption device 5 and a chimney 6 connected in sequence, wherein the waste gas condensate outlet and the circulating cooling water outlet of the condenser 2 are respectively connected to the condensate recovery tank 7 through pipelines; and also includes a mixer 8 and a roller calcining equipment 9, and the gas outlets of the mixer 8 and the roller calcining equipment 9 are respectively connected to the electrostatic precipitator 1 through pipelines.

[0022] The outlet of the activated carbon adsorption device 5 is provided with a gas online monitor 10 .

[0023] The outlet of the condensed water recovery tank 7 is connected to the cleaning water inlet of the mixer 8 and the roller calcining equipment 9 through pipelines.

[0024] The condensate recovery tank 7 is provided with a pH monitoring device 11 and a liquid level meter 12 .

[0025] The condensate recovery pool 7 is connected to an acid-base regulator storage tank through a pipeline, and a regulator control valve 13 is provided on the pipeline.

[0026] A condensate control valve 14 is provided on the pipeline from the circulating cooling water outlet of the condenser 2 to the condensate recovery tank 7 .

[0027] The pH monitoring device 11, the liquid level meter 12, the regulator control valve 13 and the condensate control valve 14 are electrically connected through a control system.

[0028] When working, the specific steps are as follows:

[0029] During the production process of the denitration catalyst, the mixer 8 and the roller calcining device 9 continuously generate exhaust gas. The exhaust gas is first introduced into the electrostatic precipitator 1. The high voltage electric field inside the electrostatic precipitator 1 charges the large dust particles in the exhaust gas, and then the electric field force is used to effectively capture the dust particles, thereby preliminarily purifying the exhaust gas and removing the large impurities therein.

[0030] After the initial treatment by the electrostatic precipitator 1, the exhaust gas will enter the condenser 2 for further treatment. In the condenser 2, cooling water is used to reduce the temperature of the exhaust gas. In this process, the water vapor and other condensable substances in the exhaust gas condense into liquid due to the temperature reduction. These condensates are then recovered to the condensate recovery pool 7 through pipelines for subsequent treatment and utilization.

[0031] The waste gas after condensation treatment enters the acid-base absorption tower 3. The acid-base absorption tower 3 is filled with alkaline absorption liquid, which can react chemically with the acid gas (such as HCl, SO2, etc.) in the waste gas, thereby effectively removing it and further purifying the waste gas.

[0032] The waste gas treated by the acid-base absorption tower 3 enters the oxidation absorption tower 4 for further treatment. The oxidation absorption tower 4 is filled with oxidants, which can react with organic matter or reducing substances in the waste gas to convert them into harmless substances, thereby further purifying the waste gas.

[0033] After being processed by the oxidation absorption tower 4, the waste gas enters the activated carbon adsorption device 5. The strong adsorption performance of the activated carbon is utilized to adsorb and remove the trace harmful substances remaining in the waste gas, ensuring that the emission quality of the waste gas meets the standards. A gas online monitor 10 is installed at the outlet of the activated carbon adsorption device 5, which can monitor the quality of the waste gas in real time and ensure that the waste gas is discharged through the chimney 6 in compliance with the standards.

[0034] The exhaust gas condensate generated by the condenser 2 and part of the circulating cooling water are recycled into the condensate recovery pool 7, and the pH value thereof is adjusted by adding an acid-base regulator to meet the cleaning requirements of the mixer 8 and the roller calcining equipment 9. In addition, based on the real-time feedback signal of the liquid level meter 12, the control system can accurately control the opening and closing of the condensate control valve, thereby ensuring that the liquid level in the condensate recovery pool 7 is always maintained at a safe and appropriate level, and avoiding the adverse effects of excessively high or low liquid levels on the system.

Claims

1. A denitration catalyst production waste gas treatment device, characterized in that: The invention comprises an electrostatic precipitator (1), a condenser (2), an acid-base absorption tower (3), an oxidation absorption tower (4), an activated carbon adsorption device (5) and a chimney (6) which are connected in sequence, wherein the exhaust gas condensate outlet and the circulating cooling water outlet of the condenser (2) are respectively connected to a condensate recovery pool (7) through pipelines; and further comprises a mixer (8) and a roller calcining device (9), wherein the gas outlets of the mixer (8) and the roller calcining device (9) are respectively connected to the electrostatic precipitator (1) through pipelines.

2. The denitration catalyst production waste gas treatment device according to claim 1, characterized in that: The outlet of the activated carbon adsorption device (5) is provided with a gas online monitor (10).

3. The denitration catalyst production waste gas treatment device according to claim 1, characterized in that: The outlet of the condensed water recovery tank (7) is connected to the cleaning water inlet of the mixer (8) and the roller calcining equipment (9) through pipelines.

4. The denitration catalyst production waste gas treatment device according to claim 1, characterized in that: The condensed water recovery pool (7) is provided with a pH monitoring device (11) and a liquid level meter (12).

5. The denitration catalyst production waste gas treatment device according to claim 4, characterized in that: The condensate recovery pool (7) is connected to an acid-base regulator storage tank via a pipeline, and a regulator control valve (13) is provided on the pipeline.

6. The denitration catalyst production waste gas treatment device according to claim 5, characterized in that: A condensate control valve (14) is provided on the pipeline from the circulating cooling water outlet of the condenser (2) to the condensate recovery tank (7).

7. The denitration catalyst production waste gas treatment device according to claim 6, characterized in that: The pH monitoring device (11), the liquid level meter (12), the regulator control valve (13) and the condensate control valve (14) are electrically connected via a control system.

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