Device and method for prolonging operation cycle of compressor

Abstract

The invention relates to the technical field of recycle gas recovery, and provides equipment and a method for prolonging the operation cycle of a compressor, the equipment for prolonging the operation cycle of the compressor comprises a sieve-plate tower, a mixed solution of white oil and oleic acid is stored in the sieve-plate tower, the sieve-plate tower is provided with a gas inlet and a gas outlet, process gas enters the sieve-plate tower from the gas inlet, and the process gas enters the sieve-plate tower from the gas outlet; after reacting with the mixed liquid, discharging from a gas outlet; the first circulating pump is communicated with the sieve-plate tower and is used for pressurizing the mixed liquid at the tower bottom of the sieve-plate tower and then returning the pressurized mixed liquid to the tower top of the sieve-plate tower; the liquid separation tank is arranged at the top of the sieve-plate tower and is used for gas-liquid separation; and the cooler communicates with the gas outlet and is used for cooling the gas entering the compressor.

Description

Technical Field

[0001] The present application relates to the technical field of circulating gas recovery, and in particular to a device and method for extending the operating cycle of a compressor. Background Art

[0002] In the related technology, the process gas is plasticized under the action of a catalyst to form a polymer. After the process gas enters the compressor, the polymer will clog the compressor components, causing equipment failure and significantly shortening the equipment operation cycle. Summary of the invention

[0003] In view of this, the present application provides a device and method for extending the operating cycle of a compressor.

[0004] Specifically, the present application is implemented through the following technical solutions: According to a first aspect of the present application, there is provided a device for extending the operating cycle of a compressor, comprising: a sieve plate tower, in which a mixture of white oil and oleic acid is stored, the sieve plate tower is provided with an air inlet and an air outlet, a process gas enters the sieve plate tower through the air inlet, reacts with the mixture and is discharged from the air outlet; a first circulation pump, connected to the sieve plate tower, the first circulation pump is used to pressurize the mixture at the bottom of the sieve plate tower and return it to the top of the sieve plate tower; a separator tank, arranged at the top of the sieve plate tower, the separator tank is used for gas-liquid separation; a cooler, connected to the air outlet, the cooler is used to cool the gas entering the compressor.

[0005] The compressor provided in this application is mainly used for circulating gas recovery, and can be used to recover ethylene, butene, pentane, hydrogen and other components in the process gas. The gas is directly returned to the fluidized circuit after being pressurized by the compressor. The equipment for extending the operating cycle of the compressor includes a sieve plate tower, a first circulating pump, a separator tank and a cooler. Specifically, this application replaces the washing tower in the related art with a sieve plate tower, and utilizes the working principle of the sieve plate tower. The sieve plate tower has a simple structure and a smaller pressure drop than the washing tower.

[0006] Furthermore, a mixture of white oil and oleic acid is added to the sieve plate tower, and the mixing ratio of the mixture of white oil and oleic acid is 9:1. The first circulation pump is connected to the bottom and the top of the sieve plate tower. The first circulation pump is used to pressurize the mixed liquid at the bottom of the sieve plate tower and return it to the top of the sieve plate tower. The first circulation pump is continuously operated, the mixed liquid is in countercurrent contact with the process gas, the white oil in the mixed liquid overflows from plate to plate, and the triethylaluminum in the process gas reacts and adsorbs with the mixed liquid to produce a slightly viscous yellow fluid, reducing the content of triethylaluminum in the process gas, thereby reducing the reaction with the residual active fine powder in the compressor system, forming protection for the compressor components, and achieving the effect of extending the compressor operation cycle.

[0007] In some embodiments, the device for extending the operating cycle of the compressor further includes: a coalescer disposed on the pipeline between the cooler and the air outlet, and the coalescer is used to prevent liquid from entering the compressor.

[0008] In some embodiments, the device for extending the operating cycle of the compressor further includes: a demister disposed in the liquid separator tank, the demister being used to separate liquid entrained in the process gas.

[0009] In some embodiments, the device for extending the operating cycle of the compressor also includes: a temperature detection device, which is arranged in the sieve plate tower; a heating system, which is connected to the sieve plate tower, and the heating system is used to ensure that the temperature in the sieve plate tower is not lower than a preset temperature.

[0010] In some embodiments, the device for extending the operating cycle of the compressor further includes: a safety valve, which is arranged at the air inlet of the sieve plate tower, and the safety valve is used to control the opening or closing of the air inlet.

[0011] In some embodiments, the device for extending the operation cycle of the compressor further includes: a flow meter, which is arranged at the outlet of the first circulation pump, and the flow meter is used to monitor the outlet circulation flow of the first circulation pump.

[0012] In some embodiments, the device for extending the operation cycle of the compressor further includes: a control valve, which is arranged at the outlet of the first circulation pump, and the control valve is used to control the outlet circulation flow of the first circulation pump.

[0013] In some embodiments, the device for extending the operating cycle of the compressor further includes: a liquid level meter, which is arranged in the sealing tank of the first circulating pump, and the liquid level meter is used to monitor the liquid level of the sealing tank of the first circulating pump.

[0014] In some embodiments, the device for extending the operating cycle of the compressor further includes: a viscometer, which is arranged in the coalescer, and the viscometer is used to monitor the viscosity of the oil when the bottom of the coalescer is drained.

[0015] In some embodiments, the device for extending the operating cycle of the compressor further includes: a second circulating pump connected to the sieve plate tower, the second circulating pump being used to pressurize the mixed liquid at the bottom of the sieve plate tower and return it to the top of the sieve plate tower.

[0016] In some embodiments, the sieve plate tower and the separator tank are an integrated structure.

[0017] In some embodiments, the device for extending the operating cycle of the compressor further includes: a liquid blocking plate, disposed between the sieve plate tower and the liquid separation tank, and the liquid blocking plate is used to block liquid.

[0018] According to a second aspect of the present application, a method for extending the operating cycle of a compressor is provided, and the method is implemented by any of the above-mentioned devices for extending the operating cycle of the compressor, and the method for extending the operating cycle of the compressor comprises: adding a mixture of white oil and oleic acid into a sieve plate tower; controlling the operation of a first circulation pump to continuously pressurize the mixed liquid at the bottom of the sieve plate tower and return it to the top of the sieve plate tower, confirming that the equipment is operating normally; sending the process gas into the sieve plate tower and reacting with the mixed liquid and then entering a separatory tank, and being discharged from the outlet of the sieve plate tower after gas-liquid separation treatment in the separatory tank; sending the process gas discharged from the sieve plate tower to the compressor after being treated in a cooler.

[0019] In some embodiments, before the process gas discharged from the sieve plate tower is processed by the cooler, the method further includes: processing the process gas discharged from the sieve plate tower by a coalescer to prevent liquid from entering the compressor.

[0020] In some embodiments, the step of confirming that the equipment is operating normally specifically includes: monitoring the outlet circulation flow rate of the first circulation pump, and adjusting the control valve at the outlet of the first circulation pump to control the circulation flow rate to be between 22 tons / hour and 28 tons / hour.

[0021] In some embodiments, the step of confirming that the equipment is operating normally further includes: monitoring the liquid level of the sealing tank of the first circulating pump to ensure that the amount of sealing oil in the sealing tank can meet the normal operation of the first circulating pump.

[0022] In some embodiments, the step of confirming that the equipment is operating normally further includes: detecting the temperature in the sieve plate tower, and when the temperature is lower than a preset temperature, controlling the operation of a heating system connected to the sieve plate tower.

[0023] In some embodiments, after the step of adding a mixture of white oil and oleic acid to the sieve plate tower, the step further includes: monitoring the oil viscosity when discharging liquid from the bottom of the coalescer, and adding oleic acid to the sieve plate tower when the oil viscosity is lower than a preset oil viscosity.

[0024] In some embodiments, the step of feeding the process gas into the sieve plate tower and reacting with the mixed liquid specifically includes: the process gas enters the sieve plate tower from the middle of the sieve plate tower, and enters the top of the sieve plate tower after countercurrent contact with the mixed liquid.

[0025] In some embodiments, the mixing ratio of the mixture of white oil and oleic acid is 9:1.

[0026] The technical solution provided by this application brings at least the following beneficial effects: In the related technology, due to the change of process conditions, the conveying medium of the three-stage reciprocating horizontal compressor has undergone significant changes. The process gas carries fine powder and triethyl aluminum, which are plasticized under the action of the catalyst to form polymers, which clog the compressor filter, interstage heat exchanger, air valve and other components, resulting in severe wear of the piston ring and support ring, cylinder damage, and a significant shortening of the operating cycle.

[0027] The present application changes the washing tower in the related art into a sieve plate tower, and utilizes the working principle of the sieve plate tower, which has the characteristics of simple structure and small pressure drop. A mixture of white oil and oleic acid is added to the sieve plate tower, which can be countercurrently contacted with the process gas, and triethylaluminum in the process gas reacts and adsorbs with the mixed liquid to produce a slightly viscous yellow fluid, reducing the content of triethylaluminum in the process gas, thereby reducing the reaction with the residual active fine powder in the compressor system, forming a protection for the compressor components, and achieving the effect of extending the compressor operation cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0030] Figure 1 A schematic diagram of the structure of a device for extending the operating cycle of a compressor provided in an embodiment of the present application; Figure 2 A schematic diagram of the connection of structural components of a device for extending the operating cycle of a compressor provided in an embodiment of the present application; Figure 3 One of the flow charts of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Figure 4 A second flow chart of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Figure 5 A third flow chart of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Figure 6 A fourth flow chart of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Figure 7 A fifth flow chart of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Figure 8A sixth flow chart of a method for extending the operation cycle of a compressor provided in an embodiment of the present application; Fig. 9 FIG7 is a flow chart of a method for extending the operating cycle of a compressor provided in an embodiment of the present application.

[0031] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and component names in the figure is: 100 a device for extending the operating cycle of the compressor, 110 a sieve plate tower, 112 an air inlet, 114 an air outlet, 120 a first circulation pump, 130 a cooler, 140 a coalescer, 150 a safety valve. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] like Figure 1 and Figure 2 As shown, according to the first aspect of the present application, there is provided a device 100 for extending the operating cycle of a compressor, comprising: a sieve plate tower 110, in which a mixture of white oil and oleic acid is stored, the sieve plate tower 110 is provided with an air inlet 112 and an air outlet 114, the process gas enters the sieve plate tower 110 through the air inlet 112, reacts with the mixed liquid and is discharged from the air outlet 114; a first circulating pump 120, connected to the sieve plate tower 110, the first circulating pump 120 is used to pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110; a separator tank, arranged at the top of the sieve plate tower 110, the separator tank is used for gas-liquid separation; a cooler 130, connected to the air outlet 114, the cooler 130 is used to cool the gas entering the compressor.

[0034] The device 100 for extending the operation cycle of the compressor provided in the present application includes a sieve plate tower 110, a first circulation pump 120, a liquid separation tank and a cooler 130. Specifically, the present application replaces the washing tower in the related art with the sieve plate tower 110, and utilizes the working principle of the sieve plate tower 110. The sieve plate tower 110 has a simple structure and a smaller pressure drop than the washing tower, and will not cause the compressor to shut down due to low inlet pressure caused by fluctuations in operating pressure during normal production.

[0035] Furthermore, a mixture of white oil and oleic acid is added to the sieve plate tower 110, and the mixture ratio of white oil to oleic acid is 9:1. The first circulating pump 120 is connected to the bottom and the top of the sieve plate tower 110, and the first circulating pump 120 is used to pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110. The first circulating pump 120 is continuously operated, and the mixed liquid contacts the process gas in countercurrent, and the white oil in the mixed liquid overflows from plate to plate, and the triethylaluminum in the process gas reacts and adsorbs with the mixed liquid to produce a slightly viscous yellow fluid, thereby reducing the content of triethylaluminum in the process gas, thereby reducing the reaction with the residual active fine powder in the compressor system, forming protection for the compressor components, and achieving the effect of extending the compressor operation cycle.

[0036] like Figure 1 and Figure 2 As shown, in some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a coalescer 140, which is disposed on the pipeline between the cooler 130 and the gas outlet 114, and the coalescer 140 is used to prevent liquid from entering the compressor.

[0037] In this embodiment, the device 100 for extending the operating cycle of the compressor further includes a coalescer 140. The coalescer 140 is disposed on the pipeline between the cooler 130 and the gas outlet 114. The coalescer 140 can fully remove liquid and aggregate fine powder, prevent liquid from entering the compressor, play a role in protecting the compressor, improve the stability of the compressor operation, and extend the operating cycle.

[0038] In some embodiments, the device 100 for extending the operation cycle of the compressor further includes: a demister disposed in the liquid separator tank, and the demister is used to separate the liquid entrained in the process gas.

[0039] In this embodiment, the device 100 for extending the operation cycle of the compressor further includes a demister. The demister is disposed in the liquid separator tank and is a gas-liquid separation device that can separate the liquid entrained in the process gas and filter out the mist entrained in the process gas.

[0040] In some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a temperature detection device, disposed in the sieve plate tower 110; a heating system, connected to the sieve plate tower 110, and the heating system is used to ensure that the temperature in the sieve plate tower 110 is not lower than a preset temperature.

[0041] In this embodiment, the device 100 for extending the operation cycle of the compressor further includes a temperature detection device and a heating system. The temperature detection device may be a thermometer, which is disposed in the sieve plate tower 110 to detect the temperature in the sieve plate tower 110 .

[0042] The heating system is connected to the sieve plate tower 110 . When the temperature detection device detects that the temperature in the sieve plate tower 110 is lower than the preset temperature, the heating system is controlled to operate to heat the sieve plate tower 110 .

[0043] The heating system may be a hot water system with a preset temperature of 40°C. In winter, the hot water system needs to be put into use in time to ensure that the temperature in the sieve plate tower 110 is not lower than 40°C.

[0044] In some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a safety valve 150 disposed at the air inlet 112 of the sieve plate tower 110 , and the safety valve 150 is used to control the opening or closing of the air inlet 112 .

[0045] In this embodiment, the device 100 for extending the compressor operation cycle further includes a safety valve 150. The safety valve 150 is disposed at the air inlet 112 of the sieve plate tower 110, and the safety valve 150 is used to control the opening or closing of the air inlet 112, and the air intake speed can be controlled by adjusting the opening of the safety valve 150.

[0046] In some embodiments, the device 100 for extending the operation cycle of the compressor further includes: a flow meter disposed at the outlet of the first circulation pump 120 , and the flow meter is used to monitor the outlet circulation flow of the first circulation pump 120 .

[0047] In this embodiment, the device 100 for extending the operation cycle of the compressor further includes a flow meter. A flow meter is provided at the outlet of the first circulating pump 120, and the flow meter is used to monitor the outlet circulation flow rate of the first circulating pump 120. The outlet circulation flow rate of the first circulating pump 120 generally needs to meet 22 tons / hour to 28 tons / hour. When the outlet circulation flow rate of the first circulating pump 120 is not within this range, it needs to be adjusted in time.

[0048] In some embodiments, the device 100 for extending the operation cycle of the compressor further includes: a control valve disposed at the outlet of the first circulation pump 120 , and the control valve is used to control the outlet circulation flow of the first circulation pump 120 .

[0049] In this embodiment, the device 100 for extending the operation cycle of the compressor further includes a control valve, which is mainly used to control the outlet circulation flow rate of the first circulation pump 120. Specifically, the control valve is arranged at the outlet of the first circulation pump 120, and when the flow meter detects that the outlet circulation flow rate of the first circulation pump 120 is not within the range of 22 tons / hour to 28 tons / hour, the control valve needs to be adjusted in time.

[0050] In some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a liquid level meter, which is arranged in the sealing tank of the first circulating pump 120 , and the liquid level meter is used to monitor the liquid level of the sealing tank of the first circulating pump 120 .

[0051] In this embodiment, the device 100 for extending the operation cycle of the compressor further includes a liquid level meter. A liquid level meter is provided in the sealing tank of the first circulating pump 120 to monitor the liquid level of the sealing tank of the first circulating pump 120. When it is detected that the liquid level of the sealing tank is too low, sealing oil is added to the sealing tank to ensure that the first circulating pump 120 can operate normally.

[0052] In some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a viscometer disposed in the coalescer 140 , the viscometer being used to monitor the viscosity of the oil when the bottom of the coalescer 140 is drained.

[0053] In this embodiment, the device 100 for extending the compressor operation cycle further includes a viscometer. A viscometer is provided at the bottom of the coalescer 140, and the viscometer is used to monitor the change in oil viscosity when the bottom of the coalescer 140 is drained, and oil acid is added according to the change in oil viscosity. In normal production, 1 / 3 barrel of oil acid needs to be added every 2 months.

[0054] In some embodiments, the device 100 for extending the compressor operation cycle further includes: a second circulation pump connected to the sieve plate tower 110 , and the second circulation pump is used to pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110 .

[0055] In this embodiment, the device 100 for extending the operating cycle of the compressor also includes a second circulating pump, which can be used as a backup circulating pump. The second circulating pump has the same function as the first circulating pump 120. Similarly, the second circulating pump is connected to the bottom and top of the sieve plate tower 110 through a pipeline. The second circulating pump is used to pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110 to achieve countercurrent contact between the mixed liquid and the process gas.

[0056] In some embodiments, the sieve plate tower 110 and the separator tank are an integrated structure.

[0057] In this embodiment, the sieve plate tower 110 and the liquid separator tank are integrated into a structure. The liquid separator tank is located above the sieve plate tower 110. After being processed by the sieve plate tower 110, the process gas directly enters the liquid separator tank for gas-liquid separation, thereby saving space occupied by the equipment.

[0058] In some embodiments, the device 100 for extending the operating cycle of the compressor further includes: a liquid blocking plate, which is arranged between the sieve plate tower 110 and the liquid separation tank, and the liquid blocking plate is used to block liquid.

[0059] In this embodiment, a liquid retaining plate is arranged between the top of the sieve plate tower 110 and the bottom of the liquid separation tank, and the liquid retaining plate can play a role in retaining liquid and reduce the amount of liquid as much as possible.

[0060] According to a second aspect of the present application, a method for extending the operating cycle of a compressor is provided, and the method is implemented by the device for extending the operating cycle of the compressor in any one of the above embodiments, such as Figure 3 As shown, the method may include the following steps: S302, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S304, controlling the first circulation pump 120 to operate, continuously pressurizing the mixed liquid at the bottom of the sieve plate tower 110 and returning it to the top of the sieve plate tower 110, confirming that the equipment operates normally; S306, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator, and then being discharged from the gas outlet of the sieve plate tower 110 after gas-liquid separation treatment in the liquid separator; S308, the process gas discharged from the sieve plate tower 110 is processed by the cooler 130 and then sent to the compressor.

[0061] The method for extending the compressor operation cycle provided in the present application is implemented by the device for extending the compressor operation cycle in any of the above embodiments, and the method for extending the compressor operation cycle specifically includes: adding a mixture of white oil and oleic acid to the sieve plate tower 110, and after the mixture is added, controlling the first circulating pump 120 connected to the bottom and the top of the sieve plate tower 110 to operate, and the first circulating pump 120 operates to continuously pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110. After confirming that the equipment is operating normally, the process gas is sent to the sieve plate tower 110 from the air inlet, the mixed liquid contacts the process gas in countercurrent, the white oil in the mixed liquid overflows from plate to plate, the triethyl aluminum in the process gas reacts and adsorbs with the mixed liquid, and a slightly viscous yellow fluid is produced. After the process gas reacts with the mixed liquid, it enters the liquid separator, and is discharged from the gas outlet of the sieve plate tower 110 after gas-liquid separation treatment in the liquid separator, and the process gas discharged from the sieve plate tower 110 is sent to the compressor after being treated by the cooler 130. This reduces the content of triethylaluminum in the process gas, reduces the reaction with residual active fine powder in the compressor system, protects the compressor components, and achieves the effect of extending the compressor operation cycle.

[0062] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Figure 4 As shown, the method may include the following steps: S402, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S404, controlling the first circulation pump 120 to operate, continuously pressurizing the mixed liquid at the bottom of the sieve plate tower 110 and returning it to the top of the sieve plate tower 110, and confirming that the equipment operates normally; S406, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator tank, and then being discharged from the gas outlet of the sieve plate tower 110 after gas-liquid separation treatment in the liquid separator tank; S408, treating the process gas discharged from the sieve plate tower 110 through the coalescer 140 to prevent liquid from entering the compressor; S410, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0063] In this embodiment, a coalescer 140 is further provided on the pipeline between the cooler 130 and the gas outlet 114. The coalescer 140 can fully remove the liquid and polymer fine powder in the process gas, prevent the liquid from entering the compressor, and play a role in protecting the compressor.

[0064] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Figure 5 As shown, the method may include the following steps: S502, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S504, controlling the operation of the first circulation pump, continuously pressurizing the mixed liquid at the bottom of the sieve plate tower 110 and returning it to the top of the sieve plate tower 110, monitoring the outlet circulation flow rate of the first circulation pump 120, and adjusting the control valve at the outlet of the first circulation pump 120 to control the circulation flow rate to be between 22 tons / hour and 28 tons / hour; S506, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator, and then being discharged from the gas outlet 114 of the sieve plate tower 110 after gas-liquid separation in the liquid separator; S508, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0065] In this embodiment, the step of confirming that the equipment is operating normally includes confirming that the outlet circulation flow of the first circulation pump 120 is normal. Specifically, the outlet circulation flow of the first circulation pump 120 is monitored by a flow meter. When the flow meter detects that the outlet circulation flow of the first circulation pump 120 is not within the range of 22 tons / hour to 28 tons / hour, the control valve at the outlet of the first circulation pump 120 needs to be adjusted in time.

[0066] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Figure 6 As shown, the method may include the following steps: S602, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S604, control the operation of the first circulation pump 120, continuously pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110, monitor the outlet circulation flow rate of the first circulation pump 120, adjust the control valve at the outlet of the first circulation pump 120 to control the circulation flow rate between 22 tons / hour and 28 tons / hour, monitor the liquid level of the sealing tank of the first circulation pump 120, and ensure that the amount of sealing oil in the sealing tank can meet the normal operation of the first circulation pump 120; S606, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator, and then being discharged from the gas outlet of the sieve plate tower 110 after gas-liquid separation treatment in the liquid separator; S608, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0067] In this embodiment, the step of confirming that the equipment is operating normally also includes confirming that the amount of sealing oil in the sealing tank of the first circulating pump 120 is normal. Specifically, a liquid level gauge is provided in the sealing tank of the first circulating pump 120, and the liquid level of the sealing tank of the first circulating pump 120 is monitored by the liquid level gauge. When it is detected that the liquid level of the sealing tank is too low, sealing oil is added to the sealing tank.

[0068] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Figure 7 As shown, the method may include the following steps: S702, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S704, control the operation of the first circulation pump 120, continuously pressurize the mixed liquid at the bottom of the sieve plate tower 110 and return it to the top of the sieve plate tower 110, monitor the outlet circulation flow rate of the first circulation pump 120, adjust the control valve at the outlet of the first circulation pump 120 to control the circulation flow rate between 22 tons / hour and 28 tons / hour, monitor the liquid level of the sealing tank of the first circulation pump 120, ensure that the amount of sealing oil in the sealing tank can meet the normal operation of the first circulation pump 120, detect the temperature in the sieve plate tower 110, and control the operation of the heating system connected to the sieve plate tower 110 when the temperature is lower than the preset temperature; S706, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator tank, and then being discharged from the gas outlet 114 of the sieve plate tower 110 after gas-liquid separation treatment in the liquid separator tank; S708, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0069] In this embodiment, the step of confirming that the equipment is operating normally also includes confirming that the temperature in the sieve plate tower 110 is normal. Specifically, the temperature in the sieve plate tower 110 is detected by a thermometer, and when the temperature in the sieve plate tower 110 is lower than a preset temperature, the heating system connected to the sieve plate tower 110 is controlled to operate. The heating system can be a heating water system, and the preset temperature is 40°C. In winter, the heating water system needs to be put into use in time to make the temperature in the sieve plate tower 110 not lower than 40°C.

[0070] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Figure 8 As shown, the method may include the following steps: S802, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S804, monitoring the oil viscosity when the bottom of the coalescer 140 is drained, and when the oil viscosity is lower than a preset oil viscosity, adding oil and acid to the sieve plate tower 110; S806, controlling the first circulation pump 120 to operate, continuously pressurizing the mixed liquid at the bottom of the sieve plate tower 110 and returning it to the top of the sieve plate tower 110, confirming that the equipment operates normally; S808, sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid and then entering the liquid separator, and then being discharged from the gas outlet 114 of the sieve plate tower 110 after gas-liquid separation in the liquid separator; S810, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0071] In this embodiment, after the step of adding the mixed liquid of white oil and oleic acid to the sieve plate tower 110, it is necessary to promptly replenish oleic acid into the sieve plate tower 110. Specifically, a viscometer is provided at the bottom of the coalescer 140, and the viscometer is used to monitor the change of oil viscosity when the bottom of the coalescer 140 is drained. Oleic acid is replenished according to the change of oil viscosity. In normal production, 1 / 3 barrel of oleic acid needs to be replenished every 2 months.

[0072] Based on the same inventive concept, the embodiment of the present application provides a method for extending the operation cycle of a compressor, such as Fig. 9 As shown, the method may include the following steps: S902, adding a mixture of white oil and oleic acid to the sieve plate tower 110; S904, controlling the first circulation pump 120 to operate, continuously pressurizing the mixed liquid at the bottom of the sieve plate tower 110 and returning it to the top of the sieve plate tower 110, and confirming that the equipment operates normally; S906, the process gas enters the sieve plate tower 110 from the middle of the sieve plate tower 110, contacts with the mixed liquid in countercurrent, enters the top of the sieve plate tower 110, and then enters the liquid separator, and is discharged from the gas outlet 114 of the sieve plate tower 110 after gas-liquid separation in the liquid separator; S908, the process gas discharged from the sieve plate tower 110 is sent to the compressor after being processed by the cooler 130.

[0073] In this embodiment, the step of sending the process gas into the sieve plate tower 110 and reacting with the mixed liquid specifically includes: an air inlet 112 is provided in the middle of the sieve plate tower 110, the process gas enters the sieve plate tower 110 from the middle of the sieve plate tower 110, the first circulation pump 120 continuously pressurizes the mixed liquid at the bottom of the sieve plate tower 110 and returns it to the top of the sieve plate tower 110, so that the mixed liquid in the sieve plate tower 110 flows from top to bottom, and the process gas enters the top of the sieve plate tower 110 after countercurrent contact with the mixed liquid. The white oil in the mixed liquid overflows from plate to plate, and the triethylaluminum in the process gas reacts and adsorbs with the mixed liquid to produce a slightly viscous yellow fluid, thereby reducing the content of triethylaluminum in the process gas, thereby reducing the reaction with the residual active fine powder in the compressor system and damaging the compressor components, thereby achieving the effect of extending the compressor operation cycle.

[0074] In some embodiments, the mixing ratio of the mixture of white oil and oleic acid is 9:1.

[0075] In this embodiment, the mixing ratio of the mixed liquid of white oil and oleic acid in the sieve plate tower is 9:1. If the mixing ratio of white oil and oleic acid is too high, it will not be effective in washing triethyl aluminum; if the mixing ratio of white oil and oleic acid is too low, the viscosity of the mixed liquid is high and the fluidity is poor, and the tower operation is unstable.

[0076] In a specific embodiment: After the equipment 100 for extending the operating cycle of the compressor has completed the final acceptance, it needs to be purged, airtight and replaced. The qualified replacement indicators are: oxygen content <6mL / m³, dew point <-74℃.

[0077] After the replacement is completed, a pneumatic pump is used to add white oil and oleic acid into the sieve plate tower 110. The mass ratio of white oil to oleic acid is 9:1. After the white oil and oleic acid mixture is added, the first circulation pump 120 or the second circulation pump is started, and the system oil is circulated. During the oil transportation, the equipment instruments and machine pump switching are debugged to confirm that the equipment is operating normally and the instruments and safety accessories are in good condition.

[0078] The process gas is sent to the equipment 100 for extending the operation cycle of the compressor for replacement, and after qualified replacement, it is incorporated into the reactor fluidization loop. The qualified replacement indicators are: oxygen content ≤4.0mL / m³, dew point: ≤-74℃.

[0079] During the operation of the equipment 100 that extends the operating cycle of the compressor, it is necessary to monitor the operating conditions of the equipment. Specifically, the outlet circulation flow rate of the first circulating pump 120 or the second circulating pump is monitored to be 22 tons / hour to 28 tons / hour, which can be adjusted through the control valve at the outlet of the circulating pump. Monitor the temperature of the sieve plate tower 110, which is required to be no less than 40°C, and put the hot water system into use in time in winter. Monitor the change in oil viscosity when the bottom of the coalescer 140 is drained, and add oil and acid according to the change in oil viscosity. During normal production, 1 / 3 barrel of oil and acid needs to be added every 2 months. Monitor the liquid level of the sealing tank of the first circulating pump 120, and add sealing oil in time when it is lacking. To ensure the safe and stable operation of the equipment.

[0080] Although this specification includes many specific implementation details, these should not be interpreted as limiting the scope of any invention or the scope of protection claimed, but are mainly used to describe the features of the specific embodiments of specific inventions. Certain features described in multiple embodiments in this specification may also be implemented in combination in a single embodiment. On the other hand, the various features described in a single embodiment may also be implemented separately in multiple embodiments or in any suitable sub-combination. In addition, although features may work in certain combinations as described above and even initially claim protection, one or more features from the claimed combination may be removed from the combination in some cases, and the claimed combination may point to a sub-combination or a variation of a sub-combination.

[0081] Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that these operations be performed in the particular order shown or performed sequentially, or requiring that all illustrated operations be performed to achieve the desired results. In some cases, multitasking and parallel processing may be advantageous. In addition, the separation of various system modules and components in the above-described embodiments should not be understood as requiring such separation in all embodiments, and it should be understood that the described program components and systems can generally be integrated together in a single software product, or packaged into multiple software products.

[0082] Thus, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In some implementations, multitasking and parallel processing may be advantageous.

[0083] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0084] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A device for extending the operating cycle of a compressor, characterized in that: include: A sieve plate tower (110), wherein a mixed liquid of white oil and oleic acid is stored in the sieve plate tower (110), and the sieve plate tower (110) is provided with an air inlet (112) and an air outlet (114); a process gas enters the sieve plate tower (110) through the air inlet (112), reacts with the mixed liquid, and is discharged from the air outlet (114); a first circulation pump (120) connected to the sieve plate tower (110), the first circulation pump (120) being used to pressurize the mixed liquid at the bottom of the sieve plate tower (110) and return it to the top of the sieve plate tower (110); A liquid separator tank is disposed at the top of the sieve plate tower (110), and is used for gas-liquid separation; A cooler (130) is communicated with the gas outlet (114), and the cooler (130) is used to cool the gas entering the compressor; a coalescer (140) disposed on a pipeline between the cooler (130) and the gas outlet (114), the coalescer (140) being used to prevent liquid from entering the compressor; A temperature detection device, disposed on the sieve plate tower (110); a heating system, connected to the sieve plate tower (110), the heating system being used to ensure that the temperature in the sieve plate tower (110) is not lower than a preset temperature; The sieve plate tower (110) and the liquid separation tank are an integrated structure.

2. The device for extending the operating period of a compressor according to claim 1, characterized in that: Also includes: A demister is arranged in the liquid separator tank, and is used to separate the liquid entrained in the process gas.

3. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A safety valve (150) is arranged at the air inlet (112) of the sieve plate tower (110), and the safety valve (150) is used to control the opening or closing of the air inlet (112).

4. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A flow meter is arranged at the outlet of the first circulation pump (120), and the flow meter is used to monitor the outlet circulation flow rate of the first circulation pump (120).

5. The device for extending the operation period of a compressor according to claim 4, characterized in that: Also includes: A control valve is arranged at the outlet of the first circulation pump (120), and the control valve is used to control the outlet circulation flow rate of the first circulation pump (120).

6. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A liquid level meter is arranged in the sealing tank of the first circulating pump (120), and the liquid level meter is used to monitor the liquid level in the sealing tank of the first circulating pump (120).

7. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A viscometer is arranged on the coalescer (140), and is used to monitor the viscosity of the oil when the bottom of the coalescer (140) is drained.

8. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A second circulation pump is connected to the sieve plate tower (110), and is used to pressurize the mixed liquid at the bottom of the sieve plate tower (110) and return it to the top of the sieve plate tower (110).

9. The device for extending the operation period of a compressor according to any one of claims 1 to 2, characterized in that: Also includes: A liquid blocking plate is arranged between the sieve plate tower (110) and the liquid separation tank, and the liquid blocking plate is used to block liquid.

10. A method for extending the operating period of a compressor, characterized in that: The method is implemented by a device for extending the operation period of a compressor according to any one of claims 1 to 9, and the method comprises: Adding a mixture of white oil and oleic acid into the sieve plate tower (110); Controlling the operation of the first circulation pump (120) to continuously pressurize the mixed liquid at the bottom of the sieve plate tower (110) and return it to the top of the sieve plate tower (110), confirming that the equipment is operating normally; The process gas is sent into the sieve plate tower (110) and reacts with the mixed liquid before entering the liquid separator tank, and is discharged from the gas outlet of the sieve plate tower (110) after gas-liquid separation treatment in the liquid separator tank; The process gas discharged from the sieve plate tower (110) is sent to a compressor after being treated in the cooler (130).

11. The method for extending the operation period of a compressor according to claim 10, characterized in that: Before the process gas discharged from the sieve plate tower (110) is processed by the cooler (130), the method further comprises: The process gas discharged from the sieve plate column (110) is treated by a coalescer (140) to prevent liquid from entering the compressor.

12. The method for extending the operation period of a compressor according to claim 10, characterized in that: The step of confirming that the device is operating normally specifically includes: The outlet circulation flow rate of the first circulation pump (120) is monitored, and a control valve at the outlet of the first circulation pump (120) is adjusted to control the circulation flow rate to be between 22 tons / hour and 28 tons / hour.

13. The method for extending the operation period of a compressor according to claim 12, characterized in that: The step of confirming that the device is operating normally also includes: The liquid level of the sealing tank of the first circulating pump (120) is monitored to ensure that the amount of sealing oil in the sealing tank is sufficient for the normal operation of the first circulating pump (120).

14. The method for extending the operation period of a compressor according to claim 12, characterized in that: The step of confirming that the device is operating normally also includes: The temperature in the sieve plate tower (110) is detected, and when the temperature is lower than a preset temperature, the heating system connected to the sieve plate tower (110) is controlled to operate.

15. The method for extending the operation period of a compressor according to claim 10, characterized in that: After the step of adding the mixed liquid of white oil and oleic acid into the sieve plate tower (110), the method further comprises: The oil viscosity during the discharge from the bottom of the coalescer (140) is monitored, and when the oil viscosity is lower than a preset oil viscosity, oil and acid are added to the sieve plate tower (110).

16. The method for extending the operation period of a compressor according to claim 10, characterized in that: The step of feeding the process gas into the sieve plate tower (110) and reacting the process gas with the mixed liquid specifically comprises: The process gas enters the sieve plate tower (110) from the middle of the sieve plate tower (110), and enters the top of the sieve plate tower (110) after countercurrent contact with the mixed liquid.

17. The method for extending the operation period of a compressor according to any one of claims 10 to 16, characterized in that: The mixing ratio of the mixed liquid of white oil and oleic acid is 9:1.

Images