Nitrogen water precooling air cooling tower filler online cleaning device and using method

Abstract

The invention discloses a nitrogen water pre-cooling air cooling tower filler on-line cleaning device and a use method, which can realize the cleaning of filler without stopping and disassembling a nitrogen water pre-cooling air cooling tower, solve the problems of long-time stopping and inconvenience in cleaning in common means, improve the cleaning effect and adapt to the cleaning requirements of different types of dirt. The technical scheme comprises a cleaning pump, a cleaning agent water tank, a matched valve, a water inlet pipe and a water outlet pipe, one end of the water inlet pipe is connected with the cleaning agent water tank, the other end of the water inlet pipe is connected with a cooling water inlet pipeline valve on the nitrogen water pre-cooling air cooling tower, one end of the water outlet pipe is connected with the cleaning agent water tank, and the other end of the water outlet pipe is connected with a cooling water outlet pipeline valve on the nitrogen water pre-cooling air cooling tower; matched valves and the cleaning pump are arranged on the water inlet pipe and the water outlet pipe, and a steam pipeline is further arranged on the cleaning agent water tank and used for heating a cleaning agent in the cleaning agent water tank.

Description

Technical Field

[0001] The present invention belongs to the technical field of industrial equipment, and particularly relates to an on-line cleaning device and a using method for the packing of a nitrogen-water precooling air cooling tower. Background Art

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] At present, large-scale air separation systems are all equipped with nitrogen-water precooling devices. The main function is to cool the compressed air step by step and remove the solid particles in the air to ensure that the temperature of the air entering the molecular sieve is around the optimal temperature of 8-15 °C, reduce the dew point of the air entering the molecular sieve, reduce the adsorption load of the molecular sieve, better purify the air, and ensure the cleanliness of the air entering the tower. In daily life, affected by the differences in the circulating water quality and temperature of production enterprises, there will be varying degrees of crystallization phenomena in the packing inside the air cooling tower of the nitrogen-water precooling device. In the long term, it will lead to too large a pressure drop after the air passes through the air cooling tower, resulting in an increase in the energy consumption of the air separation system and bringing great potential safety hazards to the safe and stable operation of the air separation device. In order to reduce the system resistance of the nitrogen-water precooling device and reduce the device energy consumption, many enterprises will regularly remove the packing inside the air cooling tower and clean the nozzles and related partitions, but this method has a long maintenance time and high cost. Summary of the Invention

[0004] In view of the above problems, the present invention provides an on-line cleaning device and a using method for the packing of a nitrogen-water precooling air cooling tower, which can realize the cleaning of the packing without shutting down and disassembling the nitrogen-water precooling air cooling tower, solve the problems of long shutdown time and inconvenient cleaning in common means, improve the cleaning effect, and can meet the cleaning requirements for different types of dirt.

[0005] In order to achieve the above object, the present invention is realized by the following technical solutions:

[0006] In a first aspect, the present invention provides an on-line cleaning device for the packing of a nitrogen-water precooling air cooling tower, including: a cleaning pump, a cleaning agent water tank, supporting valves, a water inlet pipe and a water outlet pipe; one end of the water inlet pipe is connected to the cleaning agent water tank, the other end of the water inlet pipe is connected to the cooling water inlet pipe valve on the nitrogen-water precooling air cooling tower, one end of the water outlet pipe is connected to the cleaning agent water tank, and the other end of the water outlet pipe is connected to the cooling water outlet pipe valve on the nitrogen-water precooling air cooling tower; supporting valves and the cleaning pump are arranged on the water inlet pipe and the water outlet pipe, and a steam pipe is further arranged on the cleaning agent water tank for heating the cleaning agent in the cleaning agent water tank.

[0007] Further, the nitrogen-water precooling air cooling tower is a carbon steel cylindrical pressure vessel, and an intake pipe valve and an outlet pipe valve are further arranged on the vessel.

[0008] Furthermore, the supporting valves include a manual butterfly valve, a residual liquid recovery butterfly valve, and a cleaning pump inlet butterfly valve. The cleaning pump inlet butterfly valve, the cleaning pump, and the manual butterfly valve are sequentially arranged on the water inlet pipe between the cleaning agent water tank and the nitrogen water pre-cooling air cooling tower, and the residual liquid recovery butterfly valve is arranged on the water outlet pipe; all the supporting valves are manual carbon steel butterfly valves, and the nominal pressure and diameter of the supporting valves are determined according to the specific size of the packing in the air cooling tower.

[0009] Furthermore, a pressure gauge is also arranged on the water inlet pipe. The pressure gauge is arranged between the cleaning pump and the manual butterfly valve, and the pressure gauge is a corrosion-resistant stainless steel pressure gauge for observing the outlet pressure of the cleaning pump.

[0010] Furthermore, a steam stop valve is also arranged on the steam pipeline. The steam stop valve is a manual steam inlet stop valve, and the steam stop valve is a valve made of cast steel.

[0011] Furthermore, a steam heating pipeline is arranged inside the cleaning agent water tank. The cleaning agent water tank is welded by steel plates and is used to hold the cleaning agent for circulation.

[0012] Furthermore, a water inlet and a steam pipeline are arranged at the top of the cleaning agent water tank, and a water outlet is arranged on the side of the cleaning agent water tank.

[0013] In a second aspect, the present invention also provides a method for using an on-line cleaning device for the packing of a nitrogen water pre-cooling air cooling tower, including: when the nitrogen water pre-cooling air cooling tower needs to be cleaned, connecting the on-line cleaning device to the nitrogen water pre-cooling air cooling tower; adding a mixed solution of a cleaning agent into the cleaning agent water tank, and introducing steam through the steam stop valve to heat the cleaning agent; after heating to the set temperature, opening the cleaning pump inlet butterfly valve and the manual butterfly valve, and starting the on-line cleaning device to make the cleaning agent enter the inside of the nitrogen water pre-cooling air cooling tower; using the distributor of the air cooling tower to evenly disperse the cleaning agent on the packing to clean the packing; finally, the cleaning agent at the bottom of the air cooling tower is recycled to the cleaning agent water tank through the water outlet pipe for recycling until the process cleaning requirements are met.

[0014] Furthermore, the mixed solution of the cleaning agent is prepared according to a set ratio.

[0015] Furthermore, during the cleaning process, the outlet pressure of the cleaning pump is monitored in real time through the pressure gauge, and the cleaning process is adjusted according to the pressure condition; during the recycling process of the cleaning agent, the components of the cleaning agent are periodically detected and supplemented to maintain the cleaning effect.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] By forming a closed-loop circuit with a cleaning pump, a cleaning agent water tank, a water inlet pipe, a water outlet pipe, and a nitrogen-water pre-cooling air-cooled tower, the cleaning agent can be recycled back to the cleaning agent water tank after cleaning, reducing the usage cost of the cleaning agent; enabling a solution for cleaning the packing of the air-cooled tower without shutting down and disassembling the air-cooled tower, thus solving problems such as long downtime and inconvenient cleaning that may be brought about by traditional cleaning methods.

[0018] The water inlet pipe is also provided with a pressure gauge and a manual butterfly valve. The outlet pressure of the cleaning pump is monitored in real time through the pressure gauge, facilitating the adjustment of the cleaning process according to the pressure situation. At the same time, the recycled cleaning agent can be monitored and supplemented, maintaining the cleaning effect and ensuring the cleaning quality; there is a steam heating pipeline inside the cleaning agent water tank, and the steam pipeline and steam stop valve can heat the cleaning agent, improving the cleaning effect by controlling the temperature to meet different cleaning requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic drawings forming a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0020] Figure 1 It is the overall structure diagram of the double-beam welding auxiliary device of the present invention.

[0021] In the figure: 1. Nitrogen-water pre-cooling air-cooled tower; 2. Cleaning agent water tank; 3. Cleaning pump; 4. Water inlet pipe; 5. Water outlet pipe; 6. Manual butterfly valve; 7. Residual liquid recovery butterfly valve; 8. Pressure gauge; 9. Steam pipeline; 10. Steam stop valve; 11. Cleaning pump inlet butterfly valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the present invention clearly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0024] An on-line cleaning device for the packing of a nitrogen-water pre-cooling air-cooled tower disclosed in this embodiment, as Figure 1As shown in the figure, it includes: a cleaning pump 3, a cleaning agent water tank 2, supporting valves, a water inlet pipe 4 and a water outlet pipe 5; one end of the water inlet pipe 4 is connected to the cleaning agent water tank 2, and the other end of the water inlet pipe 4 is connected to the valve of the cooling water inlet pipe 4 on the nitrogen water precooling air-cooled tower 1. One end of the water outlet pipe 5 is connected to the cleaning agent water tank 2, and the other end of the water outlet pipe 5 is connected to the valve of the cooling water outlet pipe 5 on the nitrogen water precooling air-cooled tower 1; thus, the device forms a closed-loop circuit, and the cleaning agent can be recycled to the cleaning agent water tank 2 after cleaning for recycling, reducing the use cost of the cleaning agent; supporting valves and the cleaning pump 3 are arranged on the water inlet pipe 4 and the water outlet pipe 5, and a steam pipe 9 is also arranged on the cleaning agent water tank 2 for heating the cleaning agent in the cleaning agent water tank 2. This enables a solution for cleaning the packing without shutting down and disassembling the air-cooled tower during the cleaning of the air-cooled tower, solving problems such as long downtime and inconvenient cleaning that may be brought about by traditional cleaning methods.

[0025] Specifically, the nitrogen water precooling air-cooled tower 1 is a carbon steel cylindrical pressure vessel, and an intake pipe valve and an outlet pipe valve are also arranged on the vessel.

[0026] Specifically, the supporting valves include a manual butterfly valve 6, a residual liquid recovery butterfly valve 7, and a cleaning pump 3 inlet butterfly valve. A cleaning pump inlet butterfly valve 11, a cleaning pump 3, and a manual butterfly valve 6 are sequentially arranged on the water inlet pipe 4 from the cleaning agent water tank 2 to the nitrogen water precooling air-cooled tower 1, and the residual liquid recovery butterfly valve is arranged on the water outlet pipe 5; the supporting valves are all manual carbon steel butterfly valves, and the nominal pressure and diameter of the supporting valves are determined according to the specific size of the packing in the air-cooled tower.

[0027] Specifically, a pressure gauge 8 is also arranged on the water inlet pipe 4, and the pressure gauge 8 is arranged between the cleaning pump 3 and the manual butterfly valve 6. The pressure gauge 8 is a corrosion-resistant stainless steel pressure gauge 8 for observing the outlet pressure of the cleaning pump 3; the pressure gauge 8 can not only monitor the outlet pressure of the cleaning pump 3 in real time, facilitate adjusting the cleaning process according to the pressure situation, ensure the stability and safety of the cleaning process, but also monitor and supplement the recycled cleaning agent, maintain the cleaning effect, and ensure the cleaning quality.

[0028] Specifically, a steam stop valve 10 is also arranged on the steam pipe 9. The steam stop valve 10 is a manual steam inlet stop valve, and the steam stop valve 10 is a valve made of cast steel.

[0029] Specifically, a steam heating pipeline is arranged inside the cleaning agent water tank 2. The cleaning agent water tank 2 is welded by steel plates and is used to hold the recycled cleaning agent; specifically, the steam pipe 9 and the steam stop valve 10 can heat the cleaning agent, and by controlling the temperature, the cleaning effect can be improved to meet different cleaning requirements.

[0030] Specifically, a water inlet and a steam pipe 9 are provided at the top of the cleaning agent water tank 2, and a water outlet is provided at the side of the cleaning agent water tank 2.

[0031] In a second aspect, the present invention also provides a method for using an on-line cleaning device for the packing of the nitrogen water precooling air cooling tower 1, including: when the nitrogen water precooling air cooling tower 1 needs to be cleaned, connecting the on-line cleaning device to the nitrogen water precooling air cooling tower 1; adding a mixed solution of a cleaning agent into the cleaning agent water tank 2, and introducing steam through the steam stop valve 10 to heat the cleaning agent; after heating to a set temperature, opening the cleaning pump inlet butterfly valve 11 and the manual butterfly valve 6, and starting the on-line cleaning device to make the cleaning agent enter the interior of the nitrogen water precooling air cooling tower 1; using the distributor of the air cooling tower to evenly distribute the cleaning agent on the packing to clean the packing; finally, the cleaning agent is recycled to the cleaning agent water tank 2 through the water outlet pipe 5 at the bottom of the air cooling tower until the process cleaning requirements are met.

[0032] Specifically, the mixed solution of the cleaning agent is prepared according to a specific ratio, and the specific ratio is determined according to the material of the packing in the air cooling tower, the type and degree of dirt.

[0033] Specifically, during the cleaning process, the outlet pressure of the cleaning pump 3 is monitored in real time through the pressure gauge 8, and the cleaning process is adjusted according to the pressure condition; during the recycling process of the cleaning agent, the composition of the cleaning agent is periodically detected and supplemented to maintain the cleaning effect.

[0034] Although the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present invention.

Claims

1. An on-line cleaning device for the packing of an air-cooled tower with nitrogen water precooling, characterized in that Including: A cleaning pump, a cleaning agent water tank, supporting valves, a water inlet pipe and a water outlet pipe; one end of the water inlet pipe is connected to the cleaning agent water tank, the other end of the water inlet pipe is connected to the cooling water inlet pipe valve on the nitrogen water precooling air cooling tower, one end of the water outlet pipe is connected to the cleaning agent water tank, and the other end of the water outlet pipe is connected to the cooling water outlet pipe valve on the nitrogen water precooling air cooling tower; supporting valves and the cleaning pump are arranged on the water inlet pipe and the water outlet pipe, and a steam pipe is also arranged on the cleaning agent water tank for heating the cleaning agent in the cleaning agent water tank.

2. The on-line cleaning device for the packing of an air-cooled tower with nitrogen water precooling according to claim 1, wherein, The nitrogen water precooling air cooling tower is a carbon steel cylindrical pressure vessel, and an intake pipe valve and an outlet pipe valve are also arranged on the vessel.

3. The on-line cleaning device for the packing of the air-cooled tower with nitrogen water precooling according to claim 2, characterized in that, The supporting valves include a manual butterfly valve, a residual liquid recovery butterfly valve, and a cleaning pump inlet butterfly valve. The cleaning pump inlet butterfly valve, the cleaning pump, and the manual butterfly valve are sequentially arranged on the water inlet pipe between the cleaning agent water tank and the nitrogen water precooling air cooling tower, and the residual liquid recovery butterfly valve is arranged on the water outlet pipe; the supporting valves are all manual carbon steel butterfly valves, and the nominal pressure and diameter of the supporting valves are determined according to the specific size of the packing in the air cooling tower.

4. The on-line cleaning device for the packing of the air cooling tower with nitrogen water precooling according to claim 3, characterized in that, A pressure gauge is also arranged on the water inlet pipe, and the pressure gauge is arranged between the cleaning pump and the manual butterfly valve. The pressure gauge is a corrosion-resistant stainless steel pressure gauge for observing the outlet pressure of the cleaning pump.

5. The on-line cleaning device for the packing of the air cooling tower with nitrogen water precooling according to claim 1, characterized in that, A steam stop valve is also arranged on the steam pipe. The steam stop valve is a manual steam inlet stop valve, and the steam stop valve is a valve made of cast steel.

6. The on-line cleaning device for the packing of the air cooling tower with nitrogen water precooling according to claim 1, characterized in that, A steam heating pipeline is arranged inside the cleaning agent water tank. The cleaning agent water tank is welded by steel plates and is used to hold the cleaning agent for circulation.

7. An on-line cleaning device for the packing of an air-cooled tower with nitrogen water precooling, as described in claim 6, wherein An inlet and a steam pipe are arranged at the top of the cleaning agent water tank, and an outlet is arranged on the side of the cleaning agent water tank.

8. A method for using an on-line cleaning device for a packing in an air cooling tower with nitrogen water precooling according to any one of claims 2-7, characterized in that, Including: When the nitrogen water precooling air cooling tower needs to be cleaned, connect the on-line cleaning device to the nitrogen water precooling air cooling tower; add a mixed solution of the cleaning agent to the cleaning agent water tank, introduce steam through the steam stop valve to heat the cleaning agent; after heating to the set temperature, open the cleaning pump inlet butterfly valve and the manual butterfly valve, and turn on the on-line cleaning device to make the cleaning agent enter the inside of the nitrogen water precooling air cooling tower; use the distributor of the air cooling tower to evenly distribute the cleaning agent on the packing to clean the packing; finally, the cleaning agent at the bottom of the air cooling tower recovers the cleaning agent through the water outlet pipe to the cleaning agent water tank for recycling until the process cleaning requirements are met.

9. The usage method of an on-line cleaning device for the packing of an air-cooled tower with nitrogen water precooling, as described in claim 8, is characterized in that, The mixed solution of the cleaning agent is prepared according to a set ratio.

10. The method of using an on-line cleaning device for the packing of an air-cooled tower with nitrogen water precooling according to claim 8, characterized in that, During the cleaning process, the outlet pressure of the cleaning pump is monitored in real time through the pressure gauge, and the cleaning process is adjusted according to the pressure situation; During the recycling process of the cleaning agent, the components of the cleaning agent are regularly detected and supplemented to maintain the cleaning effect.

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