A performance detection method for a quenching tower packing support plate

Abstract

The present invention relates to a performance detection method for a quenching tower packing support plate, comprising the following steps: Step 1, connecting a special detection device; Step 2, assembling the packing support plate; Step 3, pre-detection; Step 4, air pressure detection; Step 5, water-gas mixing impact; Step 6, water pressure detection; Step 7, crack detection; Step 8, cleaning the packing support plate. The present invention can simulate the real working environment of the packing support plate, making the detection data representative, and can accurately judge whether there are cracks on the wall surface of the packing support plate, thereby facilitating the screening of defective products of the packing support plate.

Description

Technical Field

[0001] The present invention relates to the technical field of quencher processing, and particularly to a method for detecting the performance of a packing support plate of a quench tower. Background Art

[0002] A quench tower is a high-temperature harmful gas cooling and purification device. In the quench tower, water is sprayed on the high-temperature harmful gas. The water absorbs a large amount of heat and turns into steam and enters. At this stage, the temperature of the high-temperature harmful gas drops sharply, and the water content rises sharply. Large-particle dust and heavy tar settle down and are carried away by the cooling water, forming semi-clean gas. The main problems solved by the quench tower are as follows: First, it realizes a sharp drop in the flue gas temperature in a very short time, thereby avoiding the late synthesis problem of dioxin (a carcinogen) during the cooling process of high-temperature flue gas during waste incineration; Second, it cools the high-temperature flue gas to the corresponding saturation temperature instantaneously. While cooling and reducing the temperature, it can also achieve the purpose of rough dust removal, without the energy consumption and cooling pipe blockage problems of subsequent forced coolers.

[0003] The main components constituting the quench tower include several tower sections for forming the tower body, a bottom cover of the tower kettle, a top cover of the tower, and a spray pipe and a packing support plate arranged inside the tower body. The packing support plate is used to support the packing, achieving the effect of rough dust removal and avoiding blocking subsequent equipment such as forced coolers. A number of holes for fluid passage are opened on the packing support plate. Since there is reverse flow of liquid and gas in the quench tower to exchange heat, each component of the quench tower needs to have a certain strength to meet the requirements of fluid flow impact and pressurized environment. Especially for the packing support plate with multiple holes, its strength is relatively weaker than that of other components. It is necessary to detect the pressure-bearing performance after the packing support plate is processed to avoid strength defects, resulting in a short service life of the packing support plate and frequent replacement, which affects the normal use of the quench tower.

[0004] Currently, there are two methods for detecting the performance of quench tower components. One is hydraulic pressure detection. By injecting water into the component to 1.25 times the operating pressure and maintaining the pressure for 30 minutes without pressure leakage, it indicates that the component has good performance. The other is air pressure detection. By injecting gas into the component to the operating pressure + 0.05 MPa and maintaining the pressure for 30 minutes without pressure leakage, it indicates that the component has good performance.

[0005] The above performance detection methods still have some defects:

[0006] (1)The above water pressure detection and air pressure detection are both implemented independently, which can only represent the situation of single air intake or single water intake in the quench tower. This situation usually only occurs at the beginning or near the end of the operation of the quench tower. However, the actual long-term working environment of the packing support plate is the impact of both liquid and gas, and this process is extremely likely to affect the strength of the packing support plate. The detection environments of the two detection methods cannot simulate the real working environment of the packing support plate, and the performance detection data is not representative.

[0007] (2)Whether it is water pressure detection or air pressure detection, the only criterion for performance determination is to read the value of the pressure gauge. When there are strength defects on the wall surface of the packing support plate, micro-cracks are likely to occur under the impact of both liquid and gas. The value shown on the pressure gauge will not change significantly due to the generation of slight cracks, and it is very difficult to observe with the naked eye. As a result, it is impossible to determine whether there are cracks on the surface of the packing support plate and it becomes a defective product. After these defective products with micro-cracks are put into use, the fluid scours the micro-cracks, shortening the service life of the packing support plate rapidly and causing serious adverse effects.

[0008] Therefore, the present invention proposes a performance detection method for the packing support plate of a quench tower to solve the above problems. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to provide a performance detection method for the packing support plate of a quench tower, which can simulate the real working environment of the packing support plate, make the detection data representative, and can accurately judge whether there are cracks on the wall surface of the packing support plate, so as to facilitate the screening of defective products of the packing support plate.

[0010] To solve the above technical problem, the technical solution of the present invention is: a performance detection method for the packing support plate of a quench tower, and its innovation lies in: including the following steps:

[0011] Step 1: Connect the special detection equipment. The special detection equipment includes a sealing unit, a clean water supply unit, a fluorescent water supply unit, a gas supply unit and a drainage unit. The top of the sealing unit has a water inlet and an air outlet, and the bottom of the sealing unit has a water outlet and an air inlet;

[0012] Step 2: Assemble the packing support plate, and seal and install the packing support plate in the middle of the sealing unit;

[0013] Step 3: Pre-detection. Close the air inlet, air outlet and water outlet. After the clean water supply unit injects clean water into the sealing unit through the water inlet to a certain pressure, observe whether there is water leakage and the pressure change, check the sealing performance of the sealing unit and the sealing performance between the packing support plate and the sealing unit;

[0014] Step 4, air pressure detection: Open the water outlet to drain the water in the sealing unit, close the water inlet and the water outlet, open the air inlet, and inject gas into the sealing unit through the air inlet by the gas supply unit until the first pressure is reached. Then, keep the pressure stable for 30 minutes and observe the pressure change in the sealing unit.

[0015] Step 5, water-vapor mixing impact: Release the pressure in the sealing unit. Open the air inlet, the air outlet, the water inlet, and the water outlet. Inject clear water into the sealing unit at a certain flow rate through the water inlet by the clear water supply unit. The clear water flows downward and exits from the water outlet. At the same time, inject gas into the sealing unit at a certain flow rate through the air inlet by the gas supply unit. The gas flows upward and exits from the air outlet, and maintain for a certain period of time.

[0016] Step 6, water pressure detection: The clear water supply unit stops injecting water and the gas supply unit stops injecting gas. Close the air inlet, the air outlet, and the water outlet. Inject fluorescent water into the sealing unit by the fluorescent water supply unit until the second pressure is reached. Then, keep the pressure stable for 30 minutes and observe the pressure change in the sealing unit.

[0017] Step 7, crack detection: Open the water outlet to drain the fluorescent water in the sealing unit. Open the sealing unit, remove the packing support plate, and move it to a dark environment. Irradiate the end face and the inner wall of the holes of the packing support plate with an ultraviolet lamp, observe whether there are fluorescent cracks, and make waterproof marks at the fluorescent crack positions.

[0018] Step 8, cleaning of the packing support plate: Rinse the remaining fluorescent water on the packing support plate clean and repair the packing support plate with cracks.

[0019] Further, in the said Step 4, after draining the water in the sealing unit, first close the water inlet, open the air outlet, and blow air into the sealing unit through the air outlet by the evacuation unit to drain the remaining water droplets in the sealing unit through the water outlet, and then close the air outlet and the water outlet.

[0020] Further, in the said Step 5, the maintenance time is 1 - 2 hours.

[0021] Further, in the said Step 6, after the clear water supply unit stops injecting water and the gas supply unit stops injecting gas, first close the air inlet, blow air into the sealing unit through the air outlet by the evacuation unit to drain the remaining water droplets in the sealing unit through the water outlet, and then close the air outlet and the water outlet.

[0022] Further, in the said Step 4 and Step 5, the gas injected into the sealing unit by the gas supply unit is high-temperature gas, and the temperature of the gas is the same as the temperature of the flue gas actually to be treated by the quench tower.

[0023] In the said Step 3 and Step 5, the clear water injected into the sealing unit by the clear water supply unit is cooling water, and the temperature of the clear water is the same as the temperature of the cooling water injected during the actual operation of the quench tower.

[0024] In step 6, the temperature of the fluorescent water injected by the fluorescent water supply unit into the sealing unit is the same as the temperature of the clear water in steps 3 and 5;

[0025] In step 5, the injection flow rate of the clear water is the same as the actual injection flow rate of the cooling water during the actual operation of the quench tower, and the injection flow rate of the gas is the same as the actual injection flow rate of the flue gas during the actual operation of the quench tower.

[0026] Further, in step 7, after the packing support plate is removed, a hard sponge roller with a smooth surface is used to gently roll-brush the end face of the packing support plate and the inner wall of the holes to absorb the remaining fluorescent water droplets.

[0027] Further, the clear water supply unit includes a water storage tank and a first heat exchanger. The inlet of the water storage tank is connected to the water inlet of the sealing unit through a first delivery pump. The water outlet of the sealing unit is connected to the inlet of the first heat exchanger through a second delivery pump. The outlet of the first heat exchanger is connected to the inlet of the water storage tank;

[0028] The fluorescent water supply unit includes a fluorescent water storage tank. The outlet of the fluorescent water storage tank is connected to the water inlet of the sealing unit through a third delivery pump. The water outlet of the sealing unit is connected to the inlet of the fluorescent water storage tank through a fourth delivery pump;

[0029] The gas supply unit includes a gas storage tank and a second heat exchanger. The gas storage tank is connected to the gas inlet of the sealing unit through a fifth delivery pump. The gas outlet of the sealing unit is connected to the inlet of the second heat exchanger. The outlet of the second heat exchanger is connected to the inlet of the gas storage tank;

[0030] The evacuation unit includes an air pump and a residual liquid collection tank. The outlet of the air pump is connected to the gas outlet of the sealing unit. The residual liquid collection tank is connected to the water outlet of the sealing unit.

[0031] Further, the gas supply unit further includes an intermediate demister. The inlet of the intermediate demister is connected to the gas outlet of the sealing unit. The gas phase outlet of the intermediate demister is connected to the inlet of the second heat exchanger through a sixth delivery pump. The liquid phase outlet of the intermediate demister is connected to the inlet of the first heat exchanger through a seventh delivery pump.

[0032] Further, a first filter is connected between the seventh delivery pump and the intermediate demister, and a second filter is connected between the sixth delivery pump and the intermediate demister.

[0033] Further, the sealing unit includes an upper sealing head and a lower sealing head. The packing support plate is installed between the upper sealing head and the lower sealing head through a sealing ring, and the upper sealing head and the lower sealing head are connected and fixed by bolts;

[0034] The water inlet and the air outlet are both arranged at the top of the upper sealing pipe head. An annular spray pipe is arranged inside the upper sealing pipe head. The top of the annular spray pipe is communicated with the water inlet. A plurality of spray ports are arranged at the bottom of the annular spray pipe. The water outlet and the air inlet are both arranged at the bottom of the lower sealing pipe head. A pressure relief port is arranged on the lower sealing pipe head, and a pressure relief valve is arranged at the pressure relief port. Pressure gauges and thermometers are arranged on both the upper sealing pipe head and the lower sealing pipe head.

[0035] The advantages of the present invention are as follows:

[0036] (1) The present invention operates in the order of first performing air pressure detection, then water-vapor mixing impact, and finally water pressure detection. The air pressure detection is used to simulate the working environment where only high-temperature flue gas exists in the quench tower initially. The water-vapor mixing impact is used to simulate the working environment where the cooling water and the high-temperature flue gas flow in opposite directions in the quench tower for heat exchange and reverse impact on the packing support plate. The water pressure detection is used to simulate the working environment at the end of the flue gas treatment in the quench tower, where no high-temperature flue gas enters and only the cooling water flows in the quench tower. The performance detection method of the present invention accurately simulates the real working environment of each stage of the packing support plate, and the detection data is representative. In addition, during the water pressure detection, fluorescent water is used for detection. During the detection process, if cracks are formed in the packing support plate during the water-vapor mixing impact stage, the fluorescent water will be pressed into the cracks under the action of pressure to form fluorescent seams. After the water pressure detection is completed, the fluorescent seams can be accurately judged by irradiating with an ultraviolet lamp, so as to conveniently screen out defective products of the packing support plate.

[0037] (2) In the present invention, before the air pressure detection, the evacuation unit blows air into the sealing unit through the air outlet, and the residual water droplets in the sealing unit are evacuated through the water outlet, effectively avoiding the capillary phenomenon caused by the residual water droplets in the sealing unit entering the pores and affecting the accuracy of the subsequent air pressure detection results.

[0038] (3) In the present invention, before the water pressure detection, the evacuation unit blows air into the sealing unit through the air outlet, and the residual water droplets in the sealing unit are evacuated through the water outlet, avoiding the local dilution of the fluorescent water by the residual water droplets and affecting the fluorescence observation effect of the fluorescent water.

[0039] (4) In the present invention, after the packing support plate is removed, a smooth hard sponge roller is used to gently roll and brush the end face and the inner wall of the holes of the packing support plate to absorb the residual fluorescent water droplets, avoiding the influence of the fluorescent water droplets on the observation of the fluorescent lines.

[0040] (5) In the present invention, a clean water circulation loop is formed by the cooperation of the water storage tank, the sealing unit, and the first heat exchanger, and a gas circulation loop is formed by the cooperation of the gas storage tank, the sealing unit, and the second heat exchanger, improving the utilization rate of clean water and gas and the heat exchange efficiency. The water outlet of the sealing unit is connected to the inlet of the fluorescent water storage tank, realizing the recycling of fluorescent water and saving the detection cost.

[0041] (6) In the present invention, an intermediate defoaming tank is provided to remove a large amount of mist carried by the gas cooled by clean water in the sealed unit.

[0042] (7) In the present invention, the first filter and the second filter are provided to filter the clean water and gas flowing out of the intermediate defoaming tank respectively, thereby improving the quality of the clean water in the water storage tank and the gas in the gas storage tank.

[0043] (8) In the present invention, an annular spray pipe is provided to improve the uniformity of the distribution of clean water in the sealing unit. While the clean water is fully in contact with the gas for heat exchange, the clean water is evenly impacted on various locations of the packing support plate, thereby improving the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0045] Figure 1 It is a connection diagram of the special detection equipment in the present invention. DETAILED DESCRIPTION

[0046] The following embodiments can enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0047] The operating pressure of the quench tower in this embodiment is 0.12 MPa. The present invention provides a method for detecting the performance of a quench tower packing support plate, comprising the following steps:

[0048] Step 1: Connect the special detection equipment; the special detection equipment includes a sealing unit 1, a fresh water supply unit, a fluorescent water supply unit, a gas supply unit, and an evacuation unit; the sealing unit 1 includes an upper sealing head and a lower sealing head. An inlet 11 and an air outlet 12 are provided at the top of the upper sealing head. An annular spray pipe is provided inside the upper sealing head. The top of the annular spray pipe is connected to the inlet 11. A number of spray nozzles are provided at the bottom of the annular spray pipe. An outlet 13, an air inlet 14, and a pressure relief port 15 are provided at the bottom of the lower sealing head. A pressure relief valve 5 is provided at the pressure relief port. Pressure gauges and thermometers are provided on both the upper sealing head and the lower sealing head; the fresh water supply unit includes a water storage tank 2 and a first heat exchanger 3. The inlet of the water storage tank 2 is connected to the inlet 11 of the sealing unit 1 through a first transfer pump 21. The outlet 13 of the sealing unit 1 is connected to the inlet of the first heat exchanger 3 through a second transfer pump 22. The outlet of the first heat exchanger 3 is connected to the inlet of the water storage tank 2; the fluorescent water supply unit includes a fluorescent water storage tank 4. The outlet of the fluorescent water storage tank 4 is connected to the inlet 11 of the sealing unit 1 through a third transfer pump 23. The outlet 13 of the sealing unit 1 is connected to the inlet of the fluorescent water storage tank 4 through a fourth transfer pump 24; the gas supply unit includes a gas storage tank 5, a second heat exchanger 6, and an intermediate demister 7. The gas storage tank 5 is connected to the air inlet 14 of the sealing unit 1 through a fifth transfer pump 25. The air outlet 12 of the sealing unit 1 is connected to the inlet of the intermediate demister 7. The intermediate demister 7 is filled with fresh water. The inlet of the intermediate demister 7 is arranged below the water surface. The top of the intermediate demister 7 has a gas phase outlet. The gas phase outlet of the intermediate demister 7 is connected to the inlet of the second heat exchanger 6 through a sixth transfer pump 26. The outlet of the second heat exchanger 6 is connected to the inlet of the gas storage tank 4. The bottom of the intermediate demister 7 has a liquid phase outlet. The liquid phase outlet of the intermediate demister 7 is connected to the inlet of the first heat exchanger 3 through a seventh transfer pump 27. A first filter 28 is connected between the seventh transfer pump 27 and the intermediate demister 7. A second filter 29 is connected between the sixth transfer pump 26 and the intermediate demister 7. The evacuation unit includes an air pump 8 and a residual liquid collection tank 9. The outlet of the air pump 8 is connected to the air outlet of the sealing unit 1. The opening of the residual liquid collection tank 9 is connected to the outlet 13 of the sealing unit 1.

[0049] Step 2: Assemble the packing support plate. Install the packing support plate between the upper sealing head and the lower sealing head through a sealing ring. The upper sealing head and the lower sealing head are connected and fixed by bolts.

[0050] Step 3, pre-detection: Close the air inlet 14, air outlet 12, water outlet 13 and pressure relief port 15. Inject clear water into the sealing unit 1 through the water inlet 11 by the clear water supply unit until the pressure reaches 0.12 MPa, then observe whether there is water leakage and pressure change, check the sealing performance of the sealing unit 1 and the sealing performance between the packing support plate and the sealing unit 1. If there is no water leakage and the pressure remains unchanged for 1 minute, the sealing performance is good, and proceed to the next step. If there is water leakage or the pressure drops rapidly, conduct a leak point investigation. After the investigation is completed, re-conduct the pre-detection until the sealing inspection is qualified;

[0051] Step 4, air pressure detection: Open the water outlet 13, drain the clear water in the sealing unit 1 and transport it to the water storage tank 2. First, close the water inlet 11, open the air outlet 12, and blow air into the sealing unit 1 through the air outlet 12 by the evacuation unit to discharge the remaining water droplets in the sealing unit 1 through the water outlet 13 into the residual liquid collection tank 9, so as to avoid the remaining water droplets in the sealing unit entering the pores to generate capillary phenomenon and affecting the accuracy of the subsequent air pressure detection results. Close the air outlet 12 and the water outlet 13, open the air inlet 14, and inject gas into the sealing unit 1 through the air inlet 14 by the gas supply unit until the pressure reaches 0.17 MPa, then stabilize the pressure for 30 minutes, and observe the pressure change in the sealing unit 1. If the pressure does not change, the air pressure detection is qualified;

[0052] Step 5, water-gas mixing impact: Open the pressure relief port 15 to relieve the pressure in the sealing unit 1. Close the pressure relief port 15, open the air inlet 14, air outlet 12, water inlet 11 and water outlet 13. Inject clear water into the sealing unit at a certain flow rate through the water inlet 11 by the clear water supply unit. The clear water flows downward, passes through the packing support plate and then enters the bottom of the lower sealing head, and flows out through the water outlet 13 and returns to the water storage tank 2 to form a clear water circulation loop. At the same time, the gas supply unit injects gas into the sealing unit 1 at a certain flow rate through the air inlet 14. The gas flows upward, passes through the packing support plate and then enters the top of the upper sealing head, and flows out from the air outlet 12 and enters the intermediate demisting tank 7 to remove the mist and then returns to the gas storage tank 5 to form a gas circulation loop. The flowing directions of the clear water and the gas in the sealing unit 1 are opposite, and they exchange heat with each other and form a reverse impact on the packing support plate, and the duration is 1.5 h;

[0053] Step 6, water pressure detection: The clear water supply unit stops injecting water and the gas supply unit stops injecting gas. First, close the water inlet 11, open the air outlet 12, and blow air into the sealing unit 1 through the air outlet 12 by the evacuation unit to discharge the remaining water droplets in the sealing unit 1 through the water outlet 13 into the residual liquid collection tank 9. Then close the air outlet 12 and the water outlet 13 to avoid local dilution of the fluorescent water by the remaining water droplets and affecting the fluorescence observation effect of the fluorescent water. Inject fluorescent water into the sealing unit 1 by the fluorescent water supply unit until the pressure reaches 0.15 MPa, then stabilize the pressure for 30 minutes, and observe the pressure change in the sealing unit. If the pressure does not change, the water pressure detection is qualified;

[0054] Step 7, crack detection: Open the water outlet 13 to release the fluorescent water in the sealing unit 1. The fluorescent water is driven back into the fluorescent water storage tank 4 for recovery by the fourth delivery pump. Open the sealing unit 1, remove the packing support plate, and gently roll-brush the end face and the inner wall of the holes of the packing support plate with a hard sponge roller with a smooth surface to absorb the remaining fluorescent water droplets, so as to avoid the influence of the fluorescent water droplets on the observation of the fluorescent wire. Move the packing support plate to a dark environment, irradiate the end face and the inner wall of the holes of the packing support plate with an ultraviolet lamp, and observe whether there are fluorescent seams. If there are fluorescent seams, it indicates that there are cracks on the packing support plate, and make a waterproof mark at the position of the fluorescent seams;

[0055] Step 8, cleaning of the packing support plate: Rinse the remaining fluorescent water on the packing support plate clean, and repair the packing support plate with cracks.

[0056] In this embodiment, to better simulate the working environment of the packing support plate in the quench tower, in Steps 4 and 5, the gas injected by the gas supply unit into the sealing unit is high-temperature gas, the gas is air, and the temperature of the gas is the same as the temperature of the flue gas actually to be treated in the quench tower. In Steps 3 and 5, the clear water injected by the clear water supply unit into the sealing unit is cooling water, and the temperature of the clear water is the same as the temperature of the cooling water injected during the actual operation of the quench tower. In Step 6, the temperature of the fluorescent water injected by the fluorescent water supply unit into the sealing unit is the same as the temperature of the clear water in Steps 3 and 5; in Step 5, the injection flow rate of the clear water is the same as the actual injection flow rate of the cooling water during the actual operation of the quench tower, and the injection flow rate of the gas is the same as the actual injection flow rate of the flue gas during the actual operation of the quench tower.

[0057] In this embodiment, the outer sides of the gas storage tank 5, the water storage tank 2, and the fluorescent water storage tank 4 are all sleeved with jackets for heat exchange; by injecting a heat source into the jacket of the gas storage tank 5, the gas in the gas storage tank 5 is heated to the required temperature, and the gas returning to the gas storage tank 5 from the intermediate demisting tank 7 is heated by the second heat exchanger and then enters the gas storage tank 5, improving the heating efficiency, thus effectively ensuring that during the water-gas mixing and impact process, the gas quickly circulated and transported into the sealing system meets the temperature requirements; the outer sides of the water storage tank 2 and the fluorescent water storage tank 4 are both sleeved with jackets for heat exchange. By injecting a cold source into the jacket of the water storage tank 2 or the fluorescent water storage tank 4, the clear water in the water storage tank 2 or the fluorescent water in the fluorescent water storage tank 4 is cooled to the required temperature. Before the clear water flows out through the water outlet 13 and enters the water storage tank during the water-gas mixing and impact process, it is cooled by the first heat exchanger, improving the cooling efficiency of the clear water and ensuring that during the water-gas mixing and impact process, the clear water quickly circulated and transported into the sealing system meets the temperature requirements.

[0058] Using the performance detection method of the quenching tower packing support plate of the present invention to detect the packing support plate, the defective product detection rate of the packing support plate has been increased from the original 85% to 93%, effectively reducing the probability of defective packing support plates being put into use.

[0059] The performance detection method of the quenching tower packing support plate of the present invention operates in the order of first air pressure detection, then water-vapor mixed impact, and finally water pressure detection. The air pressure detection is used to simulate the working environment where only high-temperature flue gas exists in the quenching tower initially. The water-vapor mixed impact is used to simulate the working environment where cooling water and high-temperature flue gas flow in opposite directions for heat exchange in the quenching tower and reverse impact on the packing support plate. The water pressure detection is used to simulate the working environment at the end of the flue gas treatment in the quenching tower, where no high-temperature flue gas enters and only cooling water flows in the quenching tower. The performance detection method of the present invention accurately simulates the real working environment of each stage of the packing support plate, and the detection data is representative. In addition, fluorescent water is used for the water pressure detection. During the detection process, if cracks are formed in the packing support plate during the water-vapor mixed impact stage, the fluorescent water will be pressed into the cracks under the action of pressure to form fluorescent seams. After the water pressure detection is completed, the fluorescent seams can be accurately judged by irradiating with an ultraviolet lamp to determine whether there are cracks on the wall surface of the packing support plate, thus facilitating the screening of defective packing support plates.

[0060] Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance detection method for the packing support plate of a quench tower, characterized in that: It includes the following steps: Step 1: Connect the dedicated detection device. The dedicated detection device includes a sealing unit, a fresh water supply unit, a fluorescent water supply unit, a gas supply unit, and a drainage unit. The top of the sealing unit has a water inlet and an air outlet, and the bottom of the sealing unit has a water outlet and an air inlet; Step 2: Assemble the packing support plate. Sealingly install the packing support plate in the middle of the sealing unit; Step 3: Pre-detection. Close the air inlet, air outlet, and water outlet. After injecting fresh water into the sealing unit through the water inlet by the fresh water supply unit until a certain pressure is reached, observe whether there is water leakage and pressure change, check the sealing performance of the sealing unit, and the sealing performance between the packing support plate and the sealing unit; Step 4: Air pressure detection. Open the water outlet, drain the water in the sealing unit, close the water inlet and water outlet, open the air inlet, inject gas into the sealing unit through the air inlet by the gas supply unit until the first pressure is reached, stabilize the pressure for 30 minutes, and observe the pressure change in the sealing unit; Step 5: Water-gas mixing impact. Release the pressure in the sealing unit. Open the air inlet, air outlet, water inlet, and water outlet. Inject fresh water into the sealing unit through the water inlet by the fresh water supply unit at a certain flow rate. The fresh water flows downward and flows out from the water outlet. At the same time, the gas supply unit injects gas into the sealing unit through the air inlet at a certain flow rate. The gas flows upward and flows out from the air outlet, and maintain for a certain period of time; Step 6: Water pressure detection. Stop injecting water by the fresh water supply unit and stop injecting gas by the gas supply unit. Close the air inlet, air outlet, and water outlet. Inject fluorescent water into the sealing unit by the fluorescent water supply unit until the second pressure is reached, stabilize the pressure for 30 minutes, and observe the pressure change in the sealing unit; Step 7: Crack detection. Open the water outlet to drain the fluorescent water in the sealing unit. Open the sealing unit, remove the packing support plate, and move it to a dark environment. Irradiate the end face and the inner wall of the holes of the packing support plate with an ultraviolet lamp, observe whether there are fluorescent cracks, and make waterproof marks at the fluorescent crack locations; Step 8: Clean the packing support plate. Rinse the remaining fluorescent water on the packing support plate, and repair the packing support plate with cracks.

2. The performance detection method of the quenching tower packing support plate according to claim 1, characterized in that: In step 4, after draining the water in the sealing unit, first close the water inlet, open the air outlet, and blow air into the sealing unit through the air outlet by the drainage unit to drain the remaining water droplets in the sealing unit through the water outlet, and then close the air outlet and water outlet.

3. The performance detection method of the quenching tower packing support plate according to claim 1, characterized in that: In step 5, the maintenance time is 1 - 2 hours.

4. The performance detection method of the quench tower packing support plate according to claim 1, characterized in that: In step 6, after the fresh water supply unit stops injecting water and the gas supply unit stops injecting gas, first close the air inlet, and blow air into the sealing unit through the air outlet by the drainage unit to drain the remaining water droplets in the sealing unit through the water outlet, and then close the air outlet and water outlet.

5. The performance detection method of the quench tower packing support plate according to claim 1, characterized in that: In steps 4 and 5, the gas injected into the sealing unit by the gas supply unit is high-temperature gas, and the temperature of the gas is the same as the temperature of the flue gas actually to be treated by the quench tower; In steps 3 and 5, the fresh water injected into the sealing unit by the fresh water supply unit is cooling water, and the temperature of the fresh water is the same as the temperature of the cooling water injected during the actual operation of the quench tower; In step 6, the temperature of the fluorescent water injected into the sealing unit by the fluorescent water supply unit is the same as the temperature of the fresh water in steps 3 and 5; In step 5, the injection flow rate of clear water is the same as the actual injection flow rate of cooling water during the actual operation of the quench tower, and the injection flow rate of the injection gas is the same as the actual injection flow rate of the flue gas during the actual operation of the quench tower.

6. The performance detection method of the quenching tower packing support plate according to claim 1, characterized in that: In step 7, after the packing support plate is removed, use a hard sponge roller with a smooth surface to gently roll-brush the end face of the packing support plate and the inner wall of the holes to absorb the remaining fluorescent water droplets.

7. The performance detection method of the quenching tower packing support plate according to claim 1, characterized in that: The clear water supply unit includes a water storage tank and a first heat exchanger. The inlet of the water storage tank is connected to the water inlet of the sealing unit through a first delivery pump. The water outlet of the sealing unit is connected to the inlet of the first heat exchanger through a second delivery pump. The outlet of the first heat exchanger is connected to the inlet of the water storage tank. The fluorescent water supply unit includes a fluorescent water storage tank. The outlet of the fluorescent water storage tank is connected to the water inlet of the sealing unit through a third delivery pump. The water outlet of the sealing unit is connected to the inlet of the fluorescent water storage tank through a fourth delivery pump. The gas supply unit includes a gas storage tank and a second heat exchanger. The gas storage tank is connected to the gas inlet of the sealing unit through a fifth delivery pump. The gas outlet of the sealing unit is connected to the inlet of the second heat exchanger. The outlet of the second heat exchanger is connected to the inlet of the gas storage tank. The evacuation unit includes an air pump and a residual liquid collection tank. The outlet of the air pump is connected to the gas outlet of the sealing unit, and the residual liquid collection tank is connected to the water outlet of the sealing unit.

8. The performance detection method of the quench tower packing support plate according to claim 7, characterized in that: The gas supply unit further includes an intermediate demister. The inlet of the intermediate demister is connected to the gas outlet of the sealing unit. The gas phase outlet of the intermediate demister is connected to the inlet of the second heat exchanger through a sixth delivery pump. The liquid phase outlet of the intermediate demister is connected to the inlet of the first heat exchanger through a seventh delivery pump.

9. The performance detection method of the quench tower packing support plate according to claim 8, characterized in that: A first filter is connected between the seventh delivery pump and the intermediate demister, and a second filter is connected between the sixth delivery pump and the intermediate demister.

10. The performance detection method of the quench tower packing support plate according to claim 1, wherein: The sealing unit includes an upper sealing head and a lower sealing head. The packing support plate is installed between the upper sealing head and the lower sealing head through a sealing ring, and the upper sealing head and the lower sealing head are connected and fixed by bolts. Both the water inlet and the gas outlet are arranged at the top of the upper sealing head. There is an annular spray pipe inside the upper sealing head. The top of the annular spray pipe is communicated with the water inlet. A number of spray openings are provided at the bottom of the annular spray pipe. Both the water outlet and the gas inlet are arranged at the bottom of the lower sealing head. A pressure relief port is provided on the lower sealing head, and a pressure relief valve is provided at the pressure relief port. Pressure gauges and thermometers are provided on both the upper sealing head and the lower sealing head.

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