Desulfurization catalyst dispensing and supplementing device

Abstract

A main body of the desulfurization catalyst dispensing and supplementing device is a stainless steel dispensing tank, the top of the tank is slightly higher than the ground, a magnetic floater liquid level meter is arranged on a tank body of the dispensing tank, a desulfurization liquid adding pipe and a catalyst feeding port are arranged above the tank body, one end of the desulfurization liquid adding pipe is communicated with a desulfurization circulating liquid tank arranged at the high position, and the other end of the desulfurization liquid adding pipe is communicated with a desulfurization circulating liquid tank. A compressed air stirring device and a VOCs (Volatile Organic Compounds) collecting port are also arranged on the dosing tank; a medicine supplementing pipe is further arranged on the medicine dispensing tank body, and a self-suction type medicine adding pump is further arranged at the end, connected into the medicine dispensing tank, of the medicine supplementing pipe. According to the utility model, the problems of high catalyst filling labor intensity, low working efficiency, high safety risk and non-uniform dispensing in the production process of the gas desulfurization system are solved.

Description

Technical Field

[0001] The utility model relates to a catalyst dispensing and replenishing device in a coke oven desulfurization system, belonging to the field of coal chemical industry. Background Art

[0002] In the coal gas desulfurization system of the coal chemical coke oven, a desulfurization catalyst is needed to promote the oxidation reaction of the desulfurization liquid and remove sulfur-containing compounds such as hydrogen sulfide and hydrogen cyanide. In order to ensure the normal progress of the catalytic reaction, the catalyst needs to be replenished in time according to the consumption of the catalyst in the desulfurization liquid to ensure that the catalyst content in the desulfurization liquid is within the specified range.

[0003] In actual operation, the catalyst is generally in powder form and packaged in bags, and the catalyst preparation tank is usually set on the top of the desulfurization circulating liquid tank. The staff is required to complete the dissolution and preparation of the catalyst on the top of the desulfurization circulating liquid tank, and pour it into the desulfurization circulating liquid tank after preparation. Since the top of the desulfurization circulating liquid tank is at a high position, the operator is required to carry the bagged catalyst and climb the ladder or inclined ladder to the preparation tank set on the top of the desulfurization circulating liquid tank for on-site preparation.

[0004] The problem with this approach is that the labor intensity is high, the work efficiency is low, the high-altitude operation is dangerous, the dosage is uneven, the dosage cannot be accurately measured, and the desulfurizer and catalyst in the working environment also have a certain impact on the health of the operators. A safe, reliable and accurate measurement automation equipment is urgently needed to replace the above manual operations. Summary of the invention

[0005] In view of the above problems, the utility model provides a desulfurization catalyst dispensing and replenishing device, which achieves the purpose of safely, quickly and accurately replenishing catalyst in the coal gas desulfurization system, and solves the problems of high labor intensity, low work efficiency, high safety risk and uneven dispensing in traditional manual operations.

[0006] The utility model solves the above-mentioned problems through the following scheme: a desulfurization catalyst dispensing and replenishing device, the main body of which is a dispensing tank made of stainless steel. In order to facilitate operation and maintenance, the tank top is slightly higher than the ground. A magnetic float level gauge is arranged on the tank body of the dispensing tank for observing the liquid height in the tank. A desulfurization liquid adding pipe and a catalyst feeding port are arranged above the tank body. One end of the desulfurization liquid adding pipe is communicated with a desulfurization circulating liquid tank arranged at a high place, and the other end is communicated with the dispensing tank. A feeding solenoid valve and a feeding flow meter are arranged in the middle of the desulfurization liquid adding pipe. A specified amount of catalyst is added to the dispensing tank through the catalyst feeding port, and then the desulfurization liquid in the desulfurization circulating liquid tank is directly introduced through the desulfurization liquid adding pipe. The control system controls the solenoid valve to add an appropriate amount of desulfurization liquid to the dispensing tank to dissolve the catalyst. The operator can also read the liquid level data of the dispensing tank through the magnetic float level gauge.

[0007] The preparation tank is also provided with a compressed air stirring device and a VOCs collecting port. The compressed air stirring device is used to stir the liquid in the preparation tank to form a uniformly proportioned high-concentration mixed liquid of desulfurization liquid and catalyst. The VOCs collecting port is used to collect the VOCs gas generated in the tank.

[0008] A drug-replenishing pipe is also provided on the drug-dispensing tank body. One end of the drug-replenishing pipe is connected to the desulfurization circulating liquid tank at a high position, and the other end is connected to the drug-dispensing tank and extends to the bottom of the drug-dispensing tank. A self-priming drug-replenishing pump is also provided at the end of the drug-replenishing pipe connected to the drug-dispensing tank. A feed flow meter and a check valve are also provided in the middle of the drug-replenishing pipe between the desulfurization circulating liquid tank and the drug-dispensing tank. By starting the self-priming drug-replenishing pump, coordinating with the drug-replenishing flow meter, and referring to the known ratio in the drug-dispensing tank, a quantitative desulfurization liquid and a high-concentration catalyst mixed liquid can be added to the desulfurization circulating liquid tank, and the concentration of the catalyst in the desulfurization circulating liquid tank can be accurately controlled to ensure the efficiency of the catalytic reaction.

[0009] Furthermore, in order to ensure that the liquid in the dispensing tank is fully stirred, a mechanical stirring device may be provided in the dispensing tank to stir the liquid together with the compressed air stirring device.

[0010] Furthermore, in order to prevent the liquid in the desulfurization circulating liquid tank from flowing back through the drug replenishing pipe and affecting the replenishment accuracy and the liquid ratio in the drug dispensing tank, a check valve is also provided in the middle of the drug replenishing pipe between the desulfurization circulating liquid tank and the drug dispensing tank.

[0011] The utility model can accurately prepare the catalyst and desulfurization liquid mixture through computer system control, and can accurately add the catalyst mixture with clear ratio and accurate measurement into the desulfurization circulating liquid tank, so as to ensure the catalyst concentration in the desulfurization circulating liquid tank and the catalytic effect. At the same time, the utility model also directly uses the desulfurization liquid in the desulfurization circulating liquid tank, so as to avoid the additional increase of water in the desulfurization circulating liquid tank and the increase of the catalyst usage due to the use of clean water to dissolve the catalyst. That is, automatic control is realized, and the safety, reliability and accurate measurement of the catalyst addition operation are also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solution of the utility model in conjunction with the accompanying drawings:

[0014] A desulfurization catalyst dispensing and replenishing device, the main body of which is a dispensing tank 1 made of stainless steel, the top of which is slightly higher than the ground 2, a magnetic float level gauge 3 is arranged on the tank body of the dispensing tank 1, a desulfurization liquid adding pipe 4 and a catalyst feeding port 5 are arranged above the tank body, one end of the desulfurization liquid adding pipe 4 is connected to the desulfurization circulating liquid tank arranged at a high place, and the other end is connected to the dispensing tank 1, a feeding solenoid valve 14 and a feeding flow meter 15 are arranged in the middle of the desulfurization liquid adding pipe 4, a specified amount of catalyst is added to the dispensing tank 1 through the catalyst feeding port 5, and then the catalyst is added to the dispensing tank 1 through the desulfurization The liquid adding pipe 4 directly introduces the desulfurization liquid in the desulfurization circulating liquid tank. The control system controls the feeding solenoid valve 14 to add an appropriate amount of desulfurization liquid to the dispensing tank 1 to dissolve the catalyst. The operator can also read the liquid level data of the dispensing tank 1 through the magnetic float level gauge 3. The dispensing tank 1 is also provided with a compressed air stirring device 6 and a VOCs collecting port 8. The compressed air stirring device 6 is used to stir the liquid in the dispensing tank 1 to form a uniformly proportioned desulfurization liquid and a high-concentration catalyst mixed liquid 12. The VOCs collecting port 8 is used to collect the VOCs gas generated in the tank.

[0015] A drug replenishing pipe 11 is also provided on the drug dispensing tank body 1, one end of the drug replenishing pipe 11 is communicated with the high desulfurization circulating liquid tank, and the other end is communicated with the drug dispensing tank 1 and extends to the bottom of the drug dispensing tank 1, and a self-priming drug adding pump 9 is also provided at the end of the drug replenishing pipe 11 connected to the drug dispensing tank 1, and a feed flow meter 13 and a check valve 17 are also provided in the middle of the drug replenishing pipe 11 between the desulfurization circulating liquid tank and the drug dispensing tank 1. By starting the self-priming drug adding pump 9, cooperating with the drug replenishing flow meter 13, and referring to the known ratio in the drug dispensing tank 1, the desulfurization circulating liquid tank can be quantitatively supplemented with a high-concentration mixed liquid 12 of desulfurization liquid and a catalyst, so as to achieve the purpose of accurately controlling the concentration of the catalyst in the desulfurization circulating liquid tank and ensuring the efficiency of the catalytic reaction.

[0016] Furthermore, in order to ensure sufficient stirring of the liquid in the dispensing tank 1 , a mechanical stirring device 7 may be provided in the dispensing tank to stir the liquid together with the compressed air stirring device 6 .

[0017] Furthermore, in order to prevent the liquid in the desulfurization circulating liquid tank from flowing back through the replenishing pipe 11 and affecting the replenishing accuracy and the liquid ratio in the dispensing tank, a check valve 16 is also provided in the middle of the replenishing pipe 11 between the desulfurization circulating liquid tank and the dispensing tank 1.

Claims

1. A desulfurization catalyst dispensing and replenishing device, the main body of which is a dispensing tank (1) made of stainless steel, the top of which is slightly higher than the ground (2), and a magnetic float level gauge (3) is arranged on the tank body of the dispensing tank (1), characterized in that: A desulfurization liquid addition pipe (4) and a catalyst addition port (5) are arranged above the tank body. One end of the desulfurization liquid addition pipe (4) is connected to a desulfurization circulating liquid tank arranged at a high position, and the other end is connected to a drug dispensing tank (1). A feeding solenoid valve (14) and a feeding flow meter (15) are arranged in the middle of the desulfurization liquid addition pipe (4). A compressed air stirring device (6) and a VOCs collection port (8) are also arranged on the drug dispensing tank (1). A drug replenishment pipe (11) is also arranged on the drug dispensing tank (1). One end of the drug replenishment pipe (11) is connected to the desulfurization circulating liquid tank arranged at a high position, and the other end is connected to the drug dispensing tank (1) and extends to the bottom of the drug dispensing tank (1). A self-priming drug dosing pump (9) is also arranged at the end of the drug replenishment pipe (11) connected to the inside of the drug dispensing tank (1). A feeding flow meter (13) and a check valve (17) are also arranged in the middle of the drug replenishment pipe (11) between the desulfurization circulating liquid tank and the drug dispensing tank (1).

2. A desulfurization catalyst dispensing and replenishing device as claimed in claim 1, characterized in that: A mechanical stirring device (7) is arranged in the medicine dispensing tank (1).

3. A desulfurization catalyst dispensing and replenishing device as claimed in claim 1 or 2, characterized in that: A check valve (16) is also provided in the middle of the medicine replenishing pipe (11) between the desulfurization circulating liquid tank and the medicine dispensing tank (1).

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