Production system and production method for scale inhibitor of oil gathering and transportation pipe network

Abstract

The invention discloses a scale inhibitor production system for an oil product gathering and transportation pipe network and a production method thereof. The scale inhibitor production system for the oil product gathering and transportation pipe network comprises a feeding section, a polymerization section, a cooling section, a crushing section and a finished product section. The feeding section comprises a raw material conveying unit used for conveying raw materials and a main catalyst conveying unit used for conveying a main catalyst. And conveying the raw materials and the main catalyst into a polymerization kettle in a polymerization section to generate a polymerization reaction to generate a polymer. And the polymer is conveyed to a cooling box of a cooling section for cooling, and the cooled polymer is conveyed to a crushing unit of a crushing section for crushing. And a blending tank of the finished product section is used for mixing the crushed polymer with the alcohol-containing solution to form a scale inhibitor finished product. Through a feeding section, a polymerization section, a cooling section, a crushing section and a finished product section, automatic addition of raw materials, a main catalyst and an alcohol-containing solution can be realized, the safety is high, and the production efficiency of the scale inhibitor can be improved.

Description

Technical Field

[0001] This application belongs to the technical field of olefin polymerization, and specifically relates to a scale inhibitor production system for an oil product gathering and transportation pipeline network and its production method. Background Art

[0002] Scale inhibitors are chemical agents widely used in oil product gathering and transportation pipeline networks, which inhibit the turbulence degree during the long-distance transportation of oil products through their inherent chemical properties. Adding scale inhibitors into the oil product gathering and transportation pipeline network through the end of the pipeline can effectively slow down the scaling rate of the gathering and transportation pipeline network and reduce the pressure drop loss of the pipeline. When maintaining the head of the transfer pump, it can effectively increase the pipeline transportation volume, reduce the pipeline diameter, improve the safety operation coefficient of the pipeline, thereby saving power consumption and reducing the cost of oil product transportation.

[0003] In related technologies, the production efficiency of scale inhibitors is low, affecting the supply of scale inhibitors. Therefore, how to improve the production efficiency of scale inhibitors has become an urgent problem to be solved. Summary of the Invention

[0004] To solve the technical problem of low production efficiency of scale inhibitors in related technologies, this application provides a scale inhibitor production system for an oil product gathering and transportation pipeline network and its production method.

[0005] The first aspect of this application provides a scale inhibitor production system for an oil product gathering and transportation pipeline network, and the scale inhibitor production system for an oil product gathering and transportation pipeline network includes:

[0006] A feeding section, including a raw material conveying unit and a main catalyst conveying unit, where the raw material conveying unit is used to convey raw materials, and the main catalyst conveying unit is used to convey the main catalyst;

[0007] A polymerization section, including a polymerization kettle, where the polymerization kettle is located downstream of the raw material conveying unit and the main catalyst conveying unit. The raw material conveying unit conveys the raw materials to the polymerization kettle, and the main catalyst conveying unit conveys the main catalyst to the polymerization kettle. The raw materials and the main catalyst undergo a polymerization reaction in the polymerization kettle to generate polymers;

[0008] A cooling section, including a cooling tank, where the cooling tank is located downstream of the polymerization kettle, and the cooling tank is used to cool the polymers;

[0009] A crushing section, including a crushing unit, where the crushing unit is located downstream of the cooling tank, and the crushing unit is used to crush the cooled polymers;

[0010] A finished product section, including a blending tank, where the blending tank is located downstream of the crushing unit, and the blending tank is used to react the crushed polymers with an alcohol-containing solution to generate a finished scale inhibitor.

[0011] In some embodiments, the raw material conveying unit includes a first conveying section and a second conveying section;

[0012] The first conveying section includes a first storage tank for storing short-chain α-olefins and a first feed pump, and the first storage tank is connected to the polymerization kettle through the first feed pump;

[0013] The second conveying section includes a second storage tank for storing long-chain α-olefins and a second feed pump, and the second storage tank is connected to the polymerization kettle through the second feed pump.

[0014] In some embodiments, the raw material conveying unit further includes:

[0015] A cooler, the inlet of the cooler is connected to the first feed pump and the second feed pump, and the outlet of the cooler is connected to the polymerization kettle.

[0016] In some embodiments, the raw material conveying unit further includes a first buffer tank and a second buffer tank;

[0017] The inlet of the first buffer tank is connected to the first feed pump, and the outlet of the first buffer tank is connected to the cooler;

[0018] The inlet of the second buffer tank is connected to the second feed pump, and the outlet of the second buffer tank is connected to the cooler.

[0019] In some embodiments, the feeding section further includes:

[0020] A cocatalyst conveying unit, located upstream of the polymerization kettle, for conveying the cocatalyst into the polymerization kettle to participate in the polymerization reaction.

[0021] In some embodiments, the cocatalyst conveying unit includes:

[0022] A cocatalyst cylinder;

[0023] A cocatalyst metering tank, connected to the cocatalyst cylinder;

[0024] A cocatalyst feed pump, the inlet of the cocatalyst feed pump is connected to the cocatalyst metering tank, and the outlet of the cocatalyst feed pump is connected to the polymerization kettle.

[0025] In some embodiments, the crushing unit includes:

[0026] A first crushing tank, located downstream of the cooling box, for crushing the cooled polymer;

[0027] A second crushing tank, located downstream of the first crushing tank, is used to crush the polymer that has been crushed by the first crushing tank. The particles obtained by crushing in the second crushing tank are smaller than the particles obtained by crushing in the second crushing tank.

[0028] In some embodiments, the crushing section further includes:

[0029] A dispersant adding device, located upstream of the second crushing tank, is used to add a dispersant into the second crushing tank.

[0030] In some embodiments, the finished product section further includes:

[0031] An alcohol-containing solution storage tank for storing the alcohol-containing solution;

[0032] An alcohol-containing solution feed pump, the inlet of which is connected to the alcohol-containing solution storage tank, and the outlet of which is connected to the blending tank, is used to transport the alcohol-containing solution in the alcohol-containing solution storage tank to the blending tank.

[0033] The second aspect of the present application provides a method for producing a scale inhibitor for an oil product gathering and transportation pipeline network. The method for producing a scale inhibitor for an oil product gathering and transportation pipeline network includes:

[0034] In the raw material transportation unit, the mixed alpha olefins formed by mixing long-chain alpha olefins and short-chain alpha olefins are cooled to -10°C;

[0035] The cooled mixed alpha olefins are transported into a polymerization kettle;

[0036] The main catalyst TiCl4-based Ziegler-Natta is transported into the polymerization kettle. In the polymerization kettle, the long-chain alpha olefins and the short-chain alpha olefins generate alpha olefin dimers under the catalytic action of the main catalyst TiCl4-based Ziegler-Natta;

[0037] The alpha olefin dimers are packed into bags and transported to a -5°C atmospheric pressure cooling box and placed for 48 hours;

[0038] The cooled alpha olefin dimers are transported into a crushing unit for crushing. In the crushing unit, a dispersant methyl ether is added to the alpha olefin dimers so that the methyl ether is mixed with the crushed alpha olefin dimers to form a scale inhibitor powder;

[0039] The scale inhibitor powder is transported to a blending tank, and an alcohol-containing solution is added to the blending tank to be mixed with the scale inhibitor powder to form a mixed suspension, and the mixed suspension is transported into a product plastic barrel tank for storage to obtain a finished scale inhibitor product.

[0040] An oil gathering and transportation pipeline scale inhibitor production system and its production method provided according to one or more embodiments of the present application. The oil gathering and transportation pipeline scale inhibitor production system includes a feeding section, a polymerization section, a cooling section, a crushing section, and a finished product section. The feeding section includes a raw material conveying unit for conveying raw materials and a main catalyst conveying unit for conveying a main catalyst. The raw materials and the main catalyst are conveyed into a polymerization kettle in the polymerization section to carry out a polymerization reaction to generate a polymer. The polymer is conveyed to a cooling tank in the cooling section for cooling, and the cooled polymer is conveyed to a crushing unit in the crushing section for crushing. A blending tank in the finished product section is used to mix the crushed polymer with an alcohol-containing solution to form a finished scale inhibitor. Through the feeding section, the polymerization section, the cooling section, the crushing section, and the finished product section, automatic addition of raw materials, the main catalyst, and the alcohol-containing solution can be achieved, with high safety, and the production efficiency of the scale inhibitor can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic flow chart of an oil gathering and transportation pipeline scale inhibitor production system in one or more embodiments of the present application;

[0042] Figure 2 It is another schematic flow chart of an oil gathering and transportation pipeline scale inhibitor production system in one or more embodiments of the present application;

[0043] Figure 3 It is a schematic flow chart of an oil gathering and transportation pipeline scale inhibitor production method in one or more embodiments of the present application.

[0044] DESCRIPTION OF REFERENCE NUMERALS:

[0045] 10. Feeding section; 11. Raw material conveying unit; 111. First conveying section; 112. First storage tank; 113. First buffer tank; 114. First feed pump; 115. Second conveying section; 116. Second storage tank; 117. Second buffer tank; 118. Second feed pump; 12. Cooler; 13. Main catalyst conveying unit; 131. Main catalyst injection system; 14. Promoter conveying unit; 141. Promoter cylinder; 142. Promoter metering tank; 143. Promoter feed pump;

[0046] 20. Polymerization section; 21. Polymerization kettle;

[0047] 30. Cooling section; 31. Cooling tank;

[0048] 40. Crushing section; 412. First crushing tank; 413. Second crushing tank;

[0049] 50. Finished product section; 51. Blending tank; 52. Alcohol-containing solution storage tank; 53. Alcohol-containing solution feed pump; 54. Finished product delivery pump; 55. Finished scale inhibitor bucket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] To enable those skilled in the art to which this application pertains to more clearly understand this application, the following will, in conjunction with the accompanying drawings in the embodiments of this application, clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this application.

[0051] Scale inhibitors are chemical agents widely used in oil product gathering and transportation pipe networks, and they inhibit the turbulence degree during the long-distance transportation of oil products through their inherent chemical properties. Adding scale inhibitors into the oil product gathering and transportation pipe network through the end of the pipeline can effectively slow down the scaling rate of the gathering and transportation pipe network and reduce the pressure drop loss of the pipeline. While maintaining the head of the transfer pump, it can effectively increase the transportation volume of the pipeline, reduce the pipe diameter of the pipeline, and improve the safety operation coefficient of the pipeline, thereby saving power consumption and reducing the cost of oil product transportation.

[0052] In the related art, the production efficiency of scale inhibitors is low, which affects the supply of scale inhibitors. Therefore, how to improve the production efficiency of scale inhibitors has become an urgent problem to be solved.

[0053] To solve the technical problem of low production efficiency of scale inhibitors in the related art, this application provides a production system for scale inhibitors in an oil product gathering and transportation pipe network. Please refer to Figures 1 to 2 , the production system for scale inhibitors in an oil product gathering and transportation pipe network includes a feeding section 10, a polymerization section 20, a cooling section 30, a pulverizing section 40, and a finished product section 50.

[0054] The feeding section 10 is used for the transportation of raw materials and the main catalyst. Please refer to Figure 2 , the feeding section 10 includes a raw material transportation unit 11 and a main catalyst transportation unit 13. The raw material transportation unit 11 is used for transporting raw materials. The raw materials for generating scale inhibitors may include short-chain α-olefins and long-chain α-olefins. Short-chain α-olefins include C8α-olefins and C6α-olefins, etc., and long-chain α-olefins include C12α-olefins and C14α-olefins, etc. The types of short-chain α-olefins and long-chain α-olefins can be selected according to actual needs, and this application does not make any limitations.

[0055] The polymerization section 20 includes a polymerization kettle 21, and the polymerization kettle 21 provides a reaction site for the dimerization reaction of short-chain α-olefins and long-chain α-olefins. The polymerization kettle 21 is located downstream of the raw material transportation unit 11, and the raw material transportation unit 11 transports short-chain α-olefins and long-chain α-olefins to the polymerization kettle 21 respectively, which facilitates the transportation of short-chain α-olefins and long-chain α-olefins into the polymerization kettle 21 for dimerization reaction to generate α-olefin dimer slurry.

[0056] To effectively control the progress of the dimerization reaction, the feeding section 10 further includes a main catalyst delivery unit 13. The main catalyst delivery unit 13 is located upstream of the polymerization kettle 21. The main catalyst can be delivered into the polymerization kettle 21 through the main catalyst delivery unit 13 to participate in the dimerization reaction, enabling the short-chain α-olefins and long-chain α-olefins to undergo a dimerization reaction under the action of the catalyst. The main catalyst includes TiCl4-based Ziegler-Natta, etc., and the main catalyst can also be set according to actual needs, which is not limited in this application.

[0057] To facilitate the transfer of the α-olefin dimer slurry generated in the polymerization kettle 21, the α-olefin dimer slurry can be packaged into bags, and the bagged α-olefin dimer slurry can be transported to the downstream cooling section 30 for cooling to cool the α-olefin dimer slurry to a gel state.

[0058] Please refer to Figures 1 to 2 , the cooling section 30 includes a cooling tank 31. The cooling tank 31 contains a coolant, which is conducive to cooling the bagged α-olefin dimer slurry in a low-temperature environment. The cooling tank 31 is located downstream of the polymerization kettle 21, and the cooling tank 31 provides a cooling site for the bagged α-olefin dimer slurry. Placing the bagged α-olefin dimer slurry in the coolant for a cold bath can increase the contact area between the bagged α-olefin dimer slurry and the coolant, ensuring the cooling effect. The coolant can be an ethylene glycol aqueous solution, and the ethylene glycol aqueous solution has a good cooling effect in a low-temperature environment. In some embodiments, the coolant can also be other solutions, which can be selected according to actual needs and are not limited in this application.

[0059] It should be noted that to ensure the cooling and forming quality of the gel-like α-olefin dimer slurry, the bagged α-olefin dimer slurry can be manually placed in an atmospheric cooling tank 31 at -5°C to -15°C for 48 hours. Usually, the temperature in the cooling tank 31 is set to -5°C. The ethylene glycol aqueous solution in the cooling tank 31 cools the α-olefin dimer slurry and can also ensure the stability of the α-olefin dimer slurry. Too high or too low a temperature will affect the stability of the α-olefin dimer slurry. Placing for 48 hours can make the α-olefin dimer slurry have better dispersibility and can also ensure that the α-olefin dimer slurry is more stable. If the placement time is less than 48 hours, it will affect the dispersibility of the α-olefin dimer slurry and thus affect the stability of the α-olefin dimer slurry.

[0060] The α-olefin dimer slurry cooled to a gel state is convenient for the crushing section 40 located downstream of the cooling tank 31 to crush. The crushing section 40 includes a crushing unit, and the crushing unit is used to crush the cooled polymer, so that it is convenient for the crushing unit to crush the gel-like formed α-olefin dimer slurry.

[0061] A dispersant is added to the pulverized colloidal molded α-olefin dimer, and the two are mixed evenly. The dispersant may include methyl ether, etc. The dispersant can be selected according to actual needs, and this application does not make any limitations. The pulverized colloidal molded α-olefin dimer added with the dispersant is transported to the finished product section 50. The finished product section 50 includes a blending tank 51. The blending tank 51 is located downstream of the pulverizing unit. The blending tank 51 is used to mix the pulverized polymer with an alcohol-containing solution to prepare a mixed suspension, and the mixed suspension can also be understood as the finished scale inhibitor product.

[0062] It should be noted that an alcohol-containing solution is added to the blending tank 51 to be configured with the α-olefin dimer and the dispersant to obtain the finished scale inhibitor product as a mixed suspension. The alcohol-containing solution can be ethanol, propylene glycol, isobutanol, amyl alcohol, isooctyl alcohol, etc., and can be selected according to actual needs. This application does not make any limitations. The alcohol-containing solution is used to prepare the suspension, and the dispersant can make the alcohol-containing solution and the α-olefin dimer mix evenly.

[0063] The raw materials and the main catalyst pass through the feeding section 10, the polymerization kettle 21, the cooling tank 31, the pulverizing unit and the blending tank 51 in sequence to prepare the scale inhibitor in the form of a mixed suspension. The scale inhibitor production system for the oil product gathering and transportation pipeline network can realize the automatic addition of raw materials, the main catalyst and the alcohol-containing solution, has high safety, and can improve the production efficiency of the scale inhibitor.

[0064] Please refer to Figures 1 to 2 , the raw material conveying unit 11 includes a first conveying section 111 and a second conveying section 115. The first conveying section 111 includes a first storage tank 112 for storing short-chain α-olefins. The first storage tank 112 is connected to the polymerization kettle 21 through a first feed pump 114 to transport the short-chain α-olefins into the polymerization kettle 21. The second conveying section 115 includes a second storage tank 116 for storing long-chain α-olefins. The second storage tank 116 is connected to the polymerization kettle 21 through a second feed pump 118 to transport the long-chain α-olefins into the polymerization kettle 21.

[0065] To prevent the reaction rate of short-chain α-olefins and long-chain α-olefins from being too fast in the polymerization kettle 21, the raw material conveying unit 11 further includes a cooler 12. The inlet of the cooler 12 is connected to the first feed pump 114 and the second feed pump 118, and the outlet of the cooler 12 is connected to the polymerization kettle 21. In this way, the short-chain α-olefins can be conveyed to the cooler 12 by the first feed pump 114. At the same time, the long-chain α-olefins are conveyed to the cooler 12 by the second feed pump 118. The cooler 12 cools the mixed α-olefins formed by mixing the short-chain α-olefins and the long-chain α-olefins, and then conveys the cooled mixed α-olefins into the polymerization kettle 21 for dimerization reaction. By reducing the temperature of the short-chain α-olefins and the long-chain α-olefins, the reaction rate of the dimerization reaction can be reduced, ensuring the stability of the dimerization reaction, and enabling the short-chain α-olefins and the long-chain α-olefins to fully react to generate α-olefin dimers. Then, the mixed α-olefins formed by mixing the short-chain α-olefins and the long-chain α-olefins in the cooler 12 are conveyed into the polymerization kettle 21 by means of pressure difference through the chilled water jacket.

[0066] It should be noted that in the cooler 12, the mixed α-olefins composed of short-chain α-olefins and long-chain α-olefins are usually cooled to -5°C to -15°C. By reducing the temperature of the short-chain α-olefins and the long-chain α-olefins, the stability of the dimerization reaction can be ensured. When the temperature of the short-chain α-olefins and the long-chain α-olefins is higher than -5°C, the dimerization reaction is intense and it is not easy to control the reaction rate of the dimerization reaction. When the temperature of the short-chain α-olefins and the long-chain α-olefins is lower than -15°C, the dimerization reaction is slow, affecting the reaction rate of the dimerization reaction.

[0067] Please refer to Figures 1 to 2 , the raw material conveying unit 11 further includes a first buffer tank 113 and a second buffer tank 117. The inlet of the first buffer tank 113 is connected to the first feed pump 114, and the outlet of the first buffer tank 113 is connected to the cooler 12. The short-chain α-olefins output through the first buffer tank 113 can reduce the pressure fluctuation of the short-chain α-olefins and improve the stability of the short-chain α-olefins conveyed into the polymerization tank through the first buffer tank 113. The inlet of the second buffer tank 117 is connected to the second feed pump 118, and the outlet of the second buffer tank 117 is connected to the cooler 12. The long-chain α-olefins output through the second buffer tank 117 can reduce the pressure fluctuation of the long-chain α-olefins and improve the stability of the long-chain α-olefins conveyed into the polymerization tank through the second buffer tank 117. In this way, the short-chain α-olefins and the long-chain α-olefins can be continuously and stably conveyed into the polymerization kettle 21.

[0068] To accurately control the ratio of short-chain α-olefins and long-chain α-olefins, flow meters are provided at the outlet positions of the first feed pump 114 and the second feed pump 118. When the flow accumulates to the set value, the corresponding feed pump is shut down.

[0069] To facilitate the transportation of the main catalyst into the polymerization kettle 21, the main catalyst transportation unit 13 includes a main catalyst injection system 131. The main catalyst injection system 131 is located upstream of the polymerization kettle 21, so that the main catalyst can inject the main catalyst solid powder into the polymerization kettle 21 through the continuous disk-type main catalyst injection system 131. The addition amount and addition speed of the main catalyst are controlled by the main catalyst injection system 131, so that the dimerization reaction can be effectively controlled.

[0070] Please refer to Figures 1 to 2 , the feed section 10 further includes a cocatalyst transportation unit 14. The cocatalyst transportation unit 14 is located upstream of the polymerization section 20 and is connected to the polymerization kettle 21 for transporting the cocatalyst into the polymerization kettle 21 to participate in the polymerization reaction. The cocatalyst can be diethylaluminum chloride, etc., and can be selected according to actual needs, which is not limited in this application.

[0071] The cocatalyst transportation unit 14 includes a cocatalyst cylinder 141, a cocatalyst metering tank 142 and a cocatalyst feed pump 143. The cocatalyst metering tank 142 is communicated with the cocatalyst cylinder 141. The inlet of the cocatalyst feed pump 143 is communicated with the cocatalyst metering tank 142, and the outlet is communicated with the polymerization kettle 21. The cocatalyst is pressed into the cocatalyst metering tank 142 by low-pressure nitrogen, and the cocatalyst is pressurized and metered by the cocatalyst feed pump 143 and injected into the polymerization kettle 21. The cooled mixed α-olefin undergoes a dimerization reaction under the action of the main catalyst and the cocatalyst to generate α-olefin dimers.

[0072] The cocatalyst in the cocatalyst cylinder 141 is pressed into the cocatalyst metering tank 142 by low-pressure liquid nitrogen, and the cocatalyst is injected into the polymerization kettle 21 by the cocatalyst feed pump 143. Flow meters are respectively arranged at the outlets of the main catalyst injection system 131 and the cocatalyst feed pump 143. The flow rates of the main catalyst injection system 131 and the cocatalyst feed pump 143 can be set through the DCS (Distributed Control System). By adjusting the injection amounts of the main catalyst and the cocatalyst in the polymerization kettle 21, the ratio of the main catalyst and the cocatalyst is controlled, and thus the dimerization reaction is effectively controlled. The output flow rates of the main catalyst injection system 131 and the cocatalyst feed pump 143 can be respectively set through the DCS, or the flow rate of one of the main catalyst injection system 131 and the cocatalyst feed pump 143 and the ratio of the main catalyst and the cocatalyst can be set, and the flow rate of the other is controlled by calculation. The flow rate control modes of the main catalyst injection system 131 and the cocatalyst feed pump 143 can be selected according to actual needs, which is not limited in this application.

[0073] The main catalyst can promote the dimerization reaction by inhibiting or accelerating the reaction rate, while the co-catalyst enhances the catalytic effect on the basis of the main catalyst and accelerates the reaction process. The combined action of the main catalyst and the co-catalyst can effectively control the progress of the dimerization reaction.

[0074] The crushing unit includes a first crushing tank 412 and a second crushing tank 413. The first crushing tank 412 and the second crushing tank 413 are located downstream of the cooling tank 31 and are used to crush the cooled polymer.

[0075] The first crushing tank 412 can be a large-piece crushing tank. The α-olefin dimer slurry cooled to a gel state taken out from the cooling tank 31 can be manually transported to the large-piece crushing tank and preliminarily crushed into α-olefin dimer granular materials under the action of low-temperature nitrogen and the stirrer in the large-piece crushing tank. The second crushing tank 413 can be a fine-powder crushing tank, and the particles obtained by crushing in the fine-powder crushing tank are smaller than those obtained by crushing in the large-piece crushing tank. The fine-powder crushing tank is located downstream of the large-piece crushing tank, and the α-olefin dimer granular materials are transported to the fine-powder crushing tank by gravity and crushed into fine-powdered α-olefin dimers.

[0076] Please refer to Figures 1 to 2 , the crushing section 40 further includes a dispersant adding device (not shown in the figure). The dispersant adding device is located upstream of the second crushing tank 413 and is used to add a dispersant into the second crushing tank 413. Scale inhibitor powder is prepared in the fine-powder crushing tank by adding a dispersant through the dispersant adding device, and the scale inhibitor powder is transported to the downstream blending tank 51 by gravity.

[0077] The finished product section 50 further includes an alcohol-containing solution storage tank 52 and an alcohol-containing solution feed pump 53. The alcohol-containing solution storage tank 52 is used to store the alcohol-containing solution. The alcohol-containing solution storage tank 52 is connected to the blending tank 51 through the alcohol-containing solution feed pump 53 and is used to transport the alcohol-containing solution in the alcohol-containing solution storage tank 52 into the blending tank 51.

[0078] The alcohol stored in the alcohol storage tank is transported to the blending tank 51 after being pressurized by the alcohol-containing solution feed pump 53. The alcohol-containing solution and the scale inhibitor powder in the blending tank 51 are fully mixed and blended in proportion to prepare a mixed suspension (which can also be understood as the finished scale inhibitor). The mixed suspension can be transported to the finished scale inhibitor drum 55 for storage through the finished product transfer pump 54.

[0079] The addition of raw materials, main catalyst, co-catalyst, dispersant, and regulator in the scale inhibitor production system for oil gathering and transportation pipelines can be automated, with high safety, convenient operation and maintenance, and can improve the production efficiency of the scale inhibitor.

[0080] Please refer to Figure 3, the second aspect of the present application provides a production method of a scale inhibitor for an oil product gathering and transportation pipeline network, and the production method of the scale inhibitor for the oil product gathering and transportation pipeline network includes:

[0081] S102. In the raw material conveying unit 11, cool the mixed α-olefins formed by mixing long-chain α-olefins and short-chain α-olefins to -10°C.

[0082] The short-chain α-olefins are stored in the first storage tank 112, and the short-chain α-olefins are conveyed to the cooler 12 through the first feed pump 114 and the first buffer tank 113. The long-chain α-olefins are stored in the second storage tank 116, and the long-chain α-olefins are conveyed to the cooler 12 through the second feed pump 118 and the second buffer tank 117. Cool the mixed α-olefins formed by mixing long-chain α-olefins and short-chain α-olefins to -10°C.

[0083] S104. Convey the cooled mixed α-olefins to the polymerization kettle 21.

[0084] The mixed α-olefins formed by mixing short-chain α-olefins and long-chain α-olefins in the cooler 12 are conveyed to the polymerization kettle 21 by means of pressure difference through the chilled water jacket.

[0085] S106. Convey the main catalyst TiCl4-based Ziegler-Natta to the polymerization kettle 21. In the polymerization kettle 21, the long-chain α-olefins and the short-chain α-olefins generate α-olefin dimers under the catalytic action of the main catalyst TiCl4-based Ziegler-Natta.

[0086] While adding the main catalyst TiCl4-based Ziegler-Natta, diethylaluminum chloride as a cocatalyst can be added to the polymerization kettle 21 at the same time. The long-chain α-olefins and the short-chain α-olefins can increase the rate of generating α-olefin dimers under the catalytic action of the main catalyst TiCl4-based Ziegler-Natta, and can facilitate the effective control of the rate of generating α-olefin dimers.

[0087] S108. Package the α-olefin dimers into bags and convey them to a -5°C atmospheric pressure cooling box 31 for 48 hours to cool the α-olefin dimer slurry into a gel state.

[0088] S110. Convey the cooled α-olefin dimers to a crushing unit for crushing. In the crushing unit, add a dispersant methyl ether to the α-olefin dimers to mix the methyl ether with the crushed α-olefin dimers to form a scale inhibitor powder.

[0089] S112. Convey the scale inhibitor powder to a blending tank 51, add an alcohol-containing solution to the blending tank 51 to mix with the scale inhibitor powder to form a mixed suspension, and convey the mixed suspension to a product plastic barrel for storage to obtain a finished scale inhibitor.

[0090] In the oil product gathering and transportation pipeline scale inhibitor production system, the addition of raw materials, main catalysts, co-catalysts, dispersants, and regulators can all achieve automation, high safety, convenient operation and maintenance, and can improve the production efficiency of scale inhibitors.

[0091] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0092] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to this application.

[0093] In this application, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0094] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise clearly specifically defined.

[0095] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A production system for scale inhibitors in an oil gathering and transportation pipeline network, characterized in that, The scale inhibitor production system for oil product gathering and transportation pipeline network includes: The feeding section, including a raw material conveying unit and a main catalyst conveying unit. The raw material conveying unit is used to convey raw materials, and the main catalyst conveying unit is used to convey the main catalyst; The polymerization section, including a polymerization kettle. The polymerization kettle is located downstream of the raw material conveying unit and the main catalyst conveying unit. The raw material conveying unit conveys the raw materials to the polymerization kettle, and the main catalyst conveying unit conveys the main catalyst to the polymerization kettle. The raw materials and the main catalyst undergo a polymerization reaction in the polymerization kettle to generate polymers; The cooling section, including a cooling tank. The cooling tank is located downstream of the polymerization kettle, and the cooling tank is used to cool the polymers; The crushing section, including a crushing unit. The crushing unit is located downstream of the cooling tank, and the crushing unit is used to crush the cooled polymers; The finished product section, including a blending tank. The blending tank is located downstream of the crushing unit, and the blending tank is used to react the crushed polymers with an alcohol-containing solution to generate the finished scale inhibitor.

2. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 1, wherein The raw material conveying unit includes a first conveying section and a second conveying section; The first conveying section includes a first storage tank for storing short-chain α-olefins and a first feed pump. The first storage tank is connected to the polymerization kettle through the first feed pump; The second conveying section includes a second storage tank for storing long-chain α-olefins and a second feed pump. The second storage tank is connected to the polymerization kettle through the second feed pump.

3. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 2, characterized in that, The raw material conveying unit further includes: A cooler. The inlet of the cooler is connected to the first feed pump and the second feed pump, and the outlet of the cooler is connected to the polymerization kettle.

4. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 3, wherein The raw material conveying unit further includes a first buffer tank and a second buffer tank; The inlet of the first buffer tank is connected to the first feed pump, and the outlet of the first buffer tank is connected to the cooler; The inlet of the second buffer tank is connected to the second feed pump, and the outlet of the second buffer tank is connected to the cooler.

5. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 1, characterized in that, The feeding section further includes: A co-catalyst conveying unit, located upstream of the polymerization kettle, for conveying the co-catalyst into the polymerization kettle to participate in the polymerization reaction.

6. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 5, wherein, The co-catalyst conveying unit includes: A co-catalyst cylinder; A co-catalyst metering tank, connected to the co-catalyst cylinder; A co-catalyst feed pump. The inlet of the co-catalyst feed pump is connected to the co-catalyst metering tank, and the outlet of the co-catalyst feed pump is connected to the polymerization kettle.

7. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 1, wherein The crushing unit includes: A first crushing tank, located downstream of the cooling tank, for crushing the cooled polymers; A second crushing tank, located downstream of the first crushing tank, for crushing the polymers crushed by the first crushing tank. The particles obtained by crushing in the second crushing tank are smaller than the particles obtained by crushing in the second crushing tank.

8. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 7, characterized in that, The crushing section further includes: A dispersant adding device, located upstream of the second crushing tank, for adding dispersant into the second crushing tank.

9. The scale inhibitor production system for oil gathering and transportation pipeline network according to claim 1, characterized in that, The finished product section further includes: An alcohol-containing solution storage tank, for storing the alcohol-containing solution; An alcohol-containing solution feed pump, the inlet of the alcohol-containing solution feed pump is communicated with the alcohol-containing solution storage tank, and the outlet of the alcohol-containing solution feed pump is communicated with the blending tank, for conveying the alcohol-containing solution in the alcohol-containing solution storage tank into the blending tank.

10. A method for producing a scale inhibitor for an oil gathering and transportation pipeline network, characterized in that, The production method is applied to the production system according to any one of claims 1-9, and the production method includes: In the raw material conveying unit, cooling the mixed α-olefins formed by mixing long-chain α-olefins and short-chain α-olefins to -10°C; Conveying the cooled mixed α-olefins into a polymerization kettle; Conveying the main catalyst TiCl4-based Ziegler-Natta into the polymerization kettle. In the polymerization kettle, the long-chain α-olefins and the short-chain α-olefins generate α-olefin dimers under the catalytic action of the main catalyst TiCl4-based Ziegler-Natta; Packing the α-olefin dimers into bags and conveying them into a -5°C atmospheric pressure cooling box and placing them for 48 hours; Conveying the cooled α-olefin dimers into a crushing unit for crushing. In the crushing unit, adding a dispersant methyl ether to the α-olefin dimers so that the methyl ether is mixed with the crushed α-olefin dimers to form a scale inhibitor powder; Conveying the scale inhibitor powder to a blending tank, adding an alcohol-containing solution into the blending tank to be mixed with the scale inhibitor powder to form a mixed suspension, and conveying the mixed suspension into a product plastic barrel for storage to obtain a finished scale inhibitor.

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