Antistatic agent preparation system, antistatic agent preparation method and antistatic agent

Abstract

The invention discloses an antistatic agent preparation system and a preparation method thereof and an antistatic agent, the system comprises a reaction kettle, a first circulating pipeline, an air inlet pipeline, a first exhaust pipeline, a driving pump, a first valve, a second valve, a third valve and a control mechanism, one end of the first circulating pipeline is connected to an air inlet of the reaction kettle, the other end of the first circulating pipeline is connected to an air outlet of the reaction kettle, one end of the air inlet pipeline is connected with an air source, the other end of the air inlet pipeline is connected with the first circulating pipeline, a first valve is arranged on the air inlet pipeline, and a driving pump and a second valve are arranged on the section, close to the air inlet, of the first circulating pipeline. A third valve is arranged on the section, close to the air outlet, of the first circulating pipeline, a first exhaust pipeline is connected to the position, between the air outlet and the third valve, of the first circulating pipeline, and the driving pump, the first valve, the second valve and the third valve are electrically connected with the control mechanism. According to the method, SO2 waste is avoided, solvent loss is avoided, and the problem of SO2 and solvent waste is solved.

Description

Technical Field

[0001] The present application relates to the fields of petroleum product storage and transportation and antistatic technology, and in particular to an antistatic agent preparation system and a preparation method thereof. Background Art

[0002] During the storage and transportation of petroleum and petroleum products, such as oil depots, oil tanks, pipelines, tankers and oil tanks, especially light oil products such as kerosene, gasoline and aviation kerosene, due to their high resistivity, they are more likely to accumulate charges and cause electrostatic disasters. Because disasters caused by static electricity are common, we need to have a high awareness of the hazards caused by electrostatic discharge and attach great importance to the prevention and control of static electricity. In order to effectively reduce or eliminate the static electricity generated by fuel during production and transportation, ensure the safe transportation of fuel and petroleum products, and reduce static electricity accidents, the research and development of antistatic agents is an important topic in petrochemical industry.

[0003] In the prior art, when preparing the antistatic agent, long-chain olefins, maleic anhydride, and solvents are put into a reactor at a certain molar ratio, and then an initiator is added; first, N2 is passed to replace the air in the reactor, and then SO2 is passed according to a predetermined pressure. The reactor is sealed and reacted for 24 to 48 hours at a certain temperature. After the reaction is completed, the exhaust valve is opened to discharge the unreacted SO2, and the crude product is a viscous liquid. Finally, the temperature is raised to 50°C, and the solvent and unreacted olefins are removed under reduced pressure, and then the lost solvent is replenished.

[0004] The above-mentioned prior art process needs to manually adjust the SO2 gas valve according to the established reaction pressure, which will cause pressure replenishment and pressure relief operations, resulting in a waste of SO2. In addition, the SO2 passage time is long, the manual operation is cumbersome, and there are potential safety hazards. The production of antistatic agents is a process of gradually becoming viscous, and the ability to dissolve SO2 becomes poor, resulting in a longer production time and a higher time cost. After the production is completed, the SO2 needs to be removed under reduced pressure, and the solvent will also be removed at the same time, resulting in a secondary waste of raw material solvents. Summary of the invention

[0005] Based on this, it is necessary to provide an antistatic agent preparation system. The antistatic agent preparation system of the present invention can promote the reaction speed, save time and cost, and after the reaction is completed, the product can be pumped with air through the pump body to remove excess SO2 and retain the solvent, thereby avoiding SO2 waste and solvent loss, and solving the problem of SO2 and solvent waste.

[0006] An embodiment of the present application provides an antistatic agent preparation system.

[0007] A system for preparing an antistatic agent comprises a reactor, a first circulation pipeline, an air intake pipeline, a first exhaust pipeline, a driving pump, a first valve, a second valve, a third valve and a control mechanism, wherein one end of the first circulation pipeline is connected to the air inlet of the reactor and the other end is connected to the air outlet of the reactor, one end of the air intake pipeline is connected to an air source and the other end is connected to the first circulation pipeline, the air intake pipeline is provided with the first valve, a section of the first circulation pipeline close to the air inlet is provided with the driving pump and the second valve, a section of the first circulation pipeline close to the air outlet is provided with the third valve, a position of the first circulation pipeline between the air outlet and the third valve is connected to the first exhaust pipeline, and the driving pump, the first valve, the second valve and the third valve are electrically connected to the control mechanism respectively.

[0008] In some embodiments, one end of the first circulation pipe connected to the air inlet of the reactor extends to the bottom of the reactor.

[0009] In some embodiments, a first pressure detection component is provided on the first circulation pipeline, and the first pressure detection component is electrically connected to the control mechanism.

[0010] In some embodiments, a second exhaust pipe is provided at a section of the first circulation pipe close to the air outlet, and the second exhaust pipe is connected to a position on the first circulation pipe between the driving pump and the second valve.

[0011] In some embodiments, a fourth valve is disposed on the second exhaust pipe, and the fourth valve is electrically connected to the control mechanism.

[0012] In some embodiments, a second pressure detection component is provided on the second exhaust pipe, and the second pressure detection component is electrically connected to the control mechanism.

[0013] In some embodiments, a fifth valve is disposed on the first exhaust pipe, and the fifth valve is electrically connected to the control mechanism.

[0014] In some embodiments, the antistatic agent preparation system further includes a heat exchange component and a second circulation pipeline, wherein the heat exchange component is connected to the space between the outer shell and the inner shell of the reactor through the second circulation pipeline, and the heat exchange component is used to perform heat exchange on the reactor.

[0015] In some embodiments, the heat exchange component is a cooling tank.

[0016] In some of the embodiments, a discharge pipe is provided at the bottom of the reactor, a sixth valve is provided on the discharge pipe, and the sixth valve is electrically connected to the control mechanism.

[0017] An embodiment of the present application also provides a method for preparing an antistatic agent.

[0018] A method for preparing an antistatic agent, using the above-mentioned antistatic agent preparation system, comprises the following steps:

[0019] Setting a predetermined pressure of the reactor, and opening the first valve, the second valve, the third valve and the first exhaust pipe;

[0020] Putting long-chain olefin, maleic anhydride and solvent into a reaction kettle according to a predetermined molar ratio, and adding an initiator;

[0021] The control mechanism controls the driving pump to operate, passes N2 through the air intake pipe to replace the air in the reactor, and the replaced air is discharged from the first exhaust pipe; closes the first exhaust pipe, passes SO2 according to the predetermined pressure of the reactor, closes the first valve, closes the driving pump, and seals the reaction at a predetermined temperature; when the pressure in the reactor drops due to the dissolution or reaction of SO2, the control mechanism controls the driving pump to pump the SO2 in the first circulation pipe into the reactor, or opens the first valve to pump SO2 into the reactor until the predetermined pressure is reached;

[0022] The first exhaust pipe is opened, the first valve is opened, and the control mechanism controls the driving pump to introduce N2 through the air intake pipe to replace the unreacted SO2 in the reactor, and the replaced SO2 is discharged from the first exhaust pipe; the crude product in the reactor is a viscous liquid, the reactor is heated to 50°C~60°C, and the solvent and unreacted long-chain olefins are removed under reduced pressure.

[0023] In some embodiments, the method for preparing the antistatic agent further satisfies at least one of the following conditions:

[0024] (1) The molar ratio or mass ratio of long-chain olefin, solvent and initiator is (10-40): (58-89.5): (0.5-2);

[0025] (2) The predetermined pressure is -0.04Mpa~0Mpa;

[0026] (3) The predetermined temperature is 10°C to 15°C;

[0027] (4) The decompression condition is -0.1Mpa~0Mpa;

[0028] (5) The reaction time is 24h~48h;

[0029] (6) After replacing the air in the reactor, before introducing SO2 according to a predetermined pressure of the reactor, evacuate the reactor;

[0030] (7) After removing the solvent and unreacted long-chain olefin under reduced pressure, the solvent is retained.

[0031] An embodiment of the present application also provides an antistatic agent.

[0032] An antistatic agent is prepared by using the antistatic agent preparation system or the preparation method.

[0033] The above-mentioned antistatic agent preparation system adopts a gas-lift reactor to prepare the antistatic agent. SO2 can be added by controlling the upper limit of the pressure, avoiding the waste of SO2 caused by excessive introduction of SO2 when the reactor is introduced. The present application is based on the control of the upper limit of the pressure, which can ensure that the amount of SO2 introduced into the reactor is just right and will not be introduced in excess. During the reaction process, when the pressure in the reactor drops after SO2 dissolves or participates in the reaction, the automatic introduction of SO2 can be controlled to replenish gas to the reactor to reach a predetermined pressure or the driving pump can be controlled to pump the SO2 in the first circulation pipeline into the reactor, so that the residual part of the SO2 in the first circulation pipeline and the part of the SO2 overflowing into the first circulation pipeline when the viscous liquid is generated by the reaction can be utilized to the greatest extent, making full use of the SO2 in the sealing system, avoiding unnecessary waste of SO2; after the reaction is completed, N2 can be added by driving the pump to remove excess sulfur dioxide in the reactor, at this time, sulfur dioxide can be discharged through the first exhaust pipeline or collected to the recovery system for secondary recovery, and the solvent for removing sulfur dioxide can be retained for secondary use to avoid solvent waste. It can be seen that the present application can avoid SO2 waste, avoid solvent loss, and solve the problem of SO2 and solvent waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0035] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same figure numbers represent the same parts.

[0036] Figure 1 This is a schematic diagram of an antistatic agent preparation system according to an embodiment of the present invention.

[0037] Description of Reference Numerals

[0038] 10. Antistatic agent preparation system; 100. Reactor; 200. First circulation pipeline; 300. Second circulation pipeline; 400. Air intake pipeline; 500. First exhaust pipeline; 600. Second exhaust pipeline; 700. Discharge pipeline; 800. Drive pump; 900. Heat exchange component; 1010. First pressure detection component; 1020. Second pressure detection component; 101. First valve; 102. Second valve; 103. Third valve; 104. Fourth valve; 105. Fifth valve; 106. Sixth valve. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0044] In this article, "optionally", "optional", "optional" means optional, that is, it means to be selected from any of the two parallel solutions of "yes" or "no". If there are multiple "optional" in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent. In this application, the descriptions such as "optionally contain" and "optionally include" mean "contain or not contain".

[0045] In the present invention, unless otherwise stated, the sum of the parts of each component in the composition can be 100 parts by weight. Unless otherwise specified, the basis of the percentage (including weight percentage) of the present invention is the total weight of the composition, and "wt%" herein means mass percentage.

[0046] In this article, unless otherwise stated, each reaction step may be carried out in the order described herein or may not be carried out in the order described herein. For example, other steps may be included between each reaction step, and the order of the reaction steps may also be appropriately swapped. This can be determined by the technician based on common knowledge and experience. Preferably, the reaction method herein is carried out sequentially.

[0047] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values ​​in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical range disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. "Numerical interval" allows for a broad range of quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0049] The embodiment of the present application provides an antistatic agent preparation system to solve at least one of the following problems existing in the antistatic agent preparation process in the prior art: (1) After the reaction is completed, it is necessary to reduce the pressure to remove excess sulfur dioxide, and the solution will also be removed at the same time, which seriously causes waste of sulfur dioxide and solvent, not only increasing the production cost of the product, but also increasing the cost of tail gas treatment; (2) The prior art uses low temperature, and SO2 is introduced according to the established pressure and time, which requires manual continuous adjustment of the gas valve switch, which is cumbersome, time-consuming and labor-intensive to operate; (3) When the pressure in the reactor is too high, it is necessary to release the pressure, which not only increases the production safety risks, but also causes waste of SO2. The following will be described in conjunction with the accompanying drawings to describe the antistatic agent preparation system.

[0050] The antistatic agent preparation system provided in the embodiments of the present application is exemplary, please refer to Figure 1 As shown, Figure 1 The schematic diagram of the structure of the antistatic agent preparation system provided in the embodiment of the present application. The antistatic agent preparation system of the present application can be used for the preparation of antistatic agents.

[0051] In order to more clearly illustrate the structure of the antistatic agent preparation system, the antistatic agent preparation system will be introduced below with reference to the accompanying drawings.

[0052] For example, see Figure 1As shown, an antistatic agent preparation system 10 includes a reactor 100, a first circulation pipeline 200, an air inlet pipeline 400, a first exhaust pipeline 500, a driving pump 800, a first valve 101, a second valve 102, a third valve 103 and a control mechanism. One end of the first circulation pipeline 200 is connected to the air inlet of the reactor 100 and the other end is connected to the air outlet of the reactor 100. One end of the air inlet pipeline 400 is connected to the air source and the other end is connected to the first circulation pipeline 200. The first valve 101 is arranged on the air inlet pipeline 400. The driving pump 800 and the second valve 102 are arranged on a section of the first circulation pipeline 200 close to the air inlet. The third valve 103 is arranged on a section of the first circulation pipeline 200 close to the air outlet. The first exhaust pipeline 500 is connected to the position between the air outlet and the third valve 103 on the first circulation pipeline 200. The driving pump 800 , the first valve 101 , the second valve 102 , and the third valve 103 are electrically connected to the control mechanism respectively.

[0053] The air intake pipe 400 is connected to a nitrogen source and a sulfur dioxide source, and can introduce nitrogen gas or sulfur dioxide gas respectively.

[0054] In some embodiments, one end of the first circulation pipe 200 connected to the air inlet of the reactor 100 extends to the bottom of the reactor 100 .

[0055] In some embodiments, a first pressure detection component 1010 is disposed on the first circulation pipeline 200. The first pressure detection component 1010 is electrically connected to the control mechanism.

[0056] In some embodiments, a section of the first circulation pipeline 200 close to the gas outlet is provided with a second exhaust pipeline 600. The second exhaust pipeline 600 is connected to the first circulation pipeline 200 between the driving pump 800 and the second valve 102.

[0057] In some embodiments, a fourth valve 104 is disposed on the second exhaust pipe 600. The fourth valve 104 is electrically connected to the control mechanism.

[0058] In some embodiments, a second pressure detection component 1020 is disposed on the second exhaust pipe 600. The second pressure detection component 1020 is electrically connected to the control mechanism.

[0059] In some embodiments, a fifth valve 105 is disposed on the first exhaust pipe 500. The fifth valve 105 is electrically connected to the control mechanism.

[0060] In some embodiments, the antistatic agent preparation system 10 further includes a heat exchange component 900 and a second circulation pipeline 300. The heat exchange component 900 is connected to the space between the outer shell and the inner shell of the reactor 100 through the second circulation pipeline 300. The heat exchange component 900 is used to perform heat exchange on the reactor 100.

[0061] In some embodiments, the heat exchange component 900 is a cooling tank.

[0062] In some embodiments, a discharge pipe 700 is disposed at the bottom of the reactor 100. A sixth valve 106 is disposed on the discharge pipe 700, and the sixth valve 106 is electrically connected to the control mechanism.

[0063] In some embodiments, the first pressure detection component 1010 and the second pressure detection component 1020 may be pressure sensors respectively.

[0064] In some embodiments, the first valve 101 , the second valve 102 , the third valve 103 , the fourth valve 104 , and the fifth valve 105 may be pneumatic valves.

[0065] An embodiment of the present application also provides a method for preparing an antistatic agent.

[0066] A method for preparing an antistatic agent, using the above-mentioned antistatic agent preparation system 10, comprises the following steps:

[0067] Set a predetermined pressure of the reactor 100, and open the first valve 101, the second valve 102, the third valve 103 and the first exhaust pipe 500;

[0068] Long-chain olefin and solvent are put into the reaction kettle 100 according to a predetermined molar ratio, and an initiator is added.

[0069] The control mechanism controls the driving pump 800 to operate, and N2 is passed through the air intake pipe 400 to replace the air in the reactor 100, and the replaced air is discharged from the first exhaust pipe 500. The first exhaust pipe is closed, SO2 is introduced according to the predetermined pressure of the reactor 100, the first valve 101 is closed, the driving pump 800 is closed, and the reaction is sealed at a predetermined temperature. When the pressure in the reactor 100 decreases after SO2 dissolves or participates in the reaction, the control mechanism controls the driving pump 800 to operate to pump SO2 in the first circulation pipe 200 into the reactor 100, or opens the first valve 101 to pump SO2 into the reactor 100 until the predetermined pressure is reached.

[0070] The first exhaust pipe 500 is opened, the first valve 101 is opened, and the control mechanism controls the driving pump 800 to operate to introduce N2 through the intake pipe 400 to replace the unreacted SO2 in the reactor 100, and the replaced SO2 is discharged from the first exhaust pipe 500; the crude product in the reactor 100 is a viscous liquid, the reactor 100 is heated to 50°C~60°C, and the solvent and unreacted long-chain olefins are removed under reduced pressure.

[0071] In some of the embodiments, the molar ratio or mass ratio of the long-chain olefin, the solvent, and the initiator is (10-40):(58-89.5):(0.5-2).

[0072] In some embodiments, the predetermined pressure is -0.04Mpa to 0Mpa. The predetermined pressure value includes but is not limited to: -0.04Mpa, -0.03Mpa, -0.02Mpa, -0.01Mpa, 0Mpa or a range between any two of the foregoing. The upper limit of the predetermined pressure can be set to 0Mpa to 0.01Mpa.

[0073] In some embodiments, the predetermined temperature is 10° C. to 15° C. The value of the predetermined temperature includes but is not limited to: 10° C., 11° C., 12° C., 13° C., 15° C. or a range between any two of the foregoing.

[0074] In some embodiments, the reduced pressure condition is -0.1 MPa to 0 MPa. The value of the reduced pressure condition includes but is not limited to: -0.1 MPa, -0.06 MPa, -0.04 MPa, 0 MPa or a range between any two of the foregoing.

[0075] In some embodiments, the initiator includes azobisisobutyronitrile, benzoyl peroxide, dodecyl peroxide, and the like.

[0076] In some of the embodiments, the long-chain olefin includes alpha olefins of 8 to 24 carbon atoms, preferably 1-decene of 10 carbon atoms. It should be noted that alpha-olefins (Alpha-olefins or α-olefins) of 8 to 24 carbon atoms are an important class of organic compounds, which are characterized by having a double bond at one end of the molecular chain (i.e., between the first and second carbon atoms). Such compounds are important raw materials for linear low-density polyethylene (LLDPE), elastomers, plasticizers, synthetic lubricant base oils, and various surfactants.

[0077] In some embodiments, α-olefins specifically include: (1) 1-Octene: 8 carbons, commonly used in the production of LLDPE. (2) 1-Decene: 10 carbons, used to make fragrances, surfactants and as a comonomer in polymer synthesis. (3) 1-Dodecene: 12 carbons, also used to produce high-performance polyethylene plastics and as a lubricant additive. (4) 1-Tetradecene: 14 carbons, less common but also has specific application areas. (5) 1-Hexadecene: 16 carbons, can be used in specialty chemicals and polymer industries. (6) 1-Octadecene: 18 carbons, used to produce synthetic lubricants with high viscosity index and other specialty chemicals. (7) 1-Eicosene: 20 carbons, more specialized, may be used in specific chemical synthesis or research. (8) 1-Docosenes: 22 carbon atoms, similarly, it has specific application scenarios. (9) 1-Tetracosene: 24 carbon atoms, usually used in scientific research or special industrial applications.

[0078] In some embodiments, the solvent includes an aromatic solvent, preferably toluene or xylene. Aromatic solvents are organic compounds with a special aroma, which are usually used to dissolve other substances. Such solvents generally contain a benzene ring structure, which is a key factor that gives them aromatic properties.

[0079] In some of the embodiments, the solvent includes (1) Benzene: It is the simplest aromatic compound, but due to its known carcinogenicity, it has been replaced by safer alternatives in many applications. (2) Toluene: It is a commonly used aromatic solvent, commonly used in paints, coatings and adhesives. It is safer than benzene, but still needs to be used with caution. (3) Xylenes: It is a mixture of isomers (o-xylene, m-xylene and p-xylene) and is widely used in industrial solvents, printing inks and dyes. (4) Trimethylbenzene. (5) Ethylbenzene: It is mainly used in the production of styrene and is also used as a solvent. (6) Styrene: It is an important chemical raw material itself, used to make plastics and resins, and also has solvent properties. (7) Chlorobenzene and dichlorobenzene: These chlorinated aromatic solvents are used in specific industrial applications, such as as pesticide carriers or deodorant ingredients. (8) Alkylaromatics: such as dodecylbenzene. These compounds are often used as the base material for synthetic detergents.

[0080] In some embodiments, the reaction time is 24h~48h.

[0081] In some embodiments, the following step is further included: after replacing the air in the reactor 100, before introducing SO2 according to a predetermined pressure of the reactor 100, the reactor 100 is vacuumed. Vacuuming the reactor 100 can increase the dissolution of SO2 in the liquid and improve the reaction efficiency.

[0082] In some of the embodiments, the solvent removed under reduced pressure can be recycled and the solvent can enter a recycling system for reuse, thereby reducing solvent waste.

[0083] An embodiment of the present application also provides an antistatic agent.

[0084] An antistatic agent is prepared by using the antistatic agent preparation system 10 and the preparation method.

[0085] Example 1

[0086] This embodiment provides an antistatic agent preparation system 10.

[0087] An antistatic agent preparation system 10 includes a reactor 100, a first circulation pipeline 200, a second circulation pipeline 300, an air intake pipeline 400, a first exhaust pipeline 500, a second exhaust pipeline 600, a discharge pipeline 700, a driving pump 800, a heat exchange component 900, a first valve 101, a second valve 102, a third valve 103, a fourth valve 104, a fifth valve 105 and a control mechanism. One end of the first circulation pipeline 200 is connected to the air inlet of the reactor 100 and the other end is connected to the air outlet of the reactor 100. The end of the first circulation pipeline 200 connected to the air inlet of the reactor 100 extends to the bottom of the reactor 100. A first pressure detection component 1010 is provided on the first circulation pipeline 200.

[0088] One end of the air inlet pipeline 400 is connected to the air source and the other end is connected to the first circulation pipeline 200. A first valve 101 is provided on the air inlet pipeline 400. A section of the first circulation pipeline 200 close to the air inlet is provided with a driving pump 800 and a second valve 102. A section of the first circulation pipeline 200 close to the air outlet is provided with a third valve 103. A first exhaust pipeline 500 is connected to a position between the air outlet and the third valve 103 on the first circulation pipeline 200, and a fifth valve 105 is provided on the first exhaust pipeline 500. A section of the first circulation pipeline 200 close to the air outlet is provided with a second exhaust pipeline 600. The second exhaust pipeline 600 is connected to a position between the driving pump 800 and the second valve 102 on the first circulation pipeline 200. A fourth valve 104 is provided on the second exhaust pipeline 600. A discharge pipeline 700 is provided at the bottom of the reactor 100. A sixth valve 106 is provided on the discharge pipeline 700.

[0089] The heat exchange component 900 is connected to the space between the outer shell and the inner shell of the reactor 100 through the second circulation pipeline 300. The heat exchange component 900 is used to perform heat exchange on the reactor 100. The heat exchange component 900 is a cooling tank. The first pressure detection component 1010 and the second pressure detection component 1020 are pressure sensors. The first valve 101, the second valve 102, the third valve 103, the fourth valve 104, the fifth valve 105, and the fourth valve 104 can be pneumatic valves.

[0090] The first pressure detection component 1010 , the second pressure detection component 1020 , the driving pump 800 , the first valve 101 , the second valve 102 , the third valve 103 , the fourth valve 104 , the fifth valve 105 , and the sixth valve 106 are electrically connected to the control mechanism, respectively.

[0091] Example 2

[0092] This embodiment provides a method for preparing an antistatic agent.

[0093] The antistatic agent preparation method of this embodiment adopts the antistatic agent preparation system 10 of embodiment 1, and comprises the following steps:

[0094] (1) Set the predetermined pressure of the reactor 100 to -0.04 MPa, and open the first valve 101, the second valve 102, and the third valve 103.

[0095] (2) 800 g of 1-octene and 1300 g of xylene as solvent were put into a reaction kettle 100, and 34 g of azobisisobutyronitrile as initiator was added.

[0096] (3) The control mechanism controls the driving pump 800 to operate, and N2 is passed through the air inlet pipe 400 for 10 minutes to replace the air in the reactor 100, and the replaced air is discharged from the first exhaust pipe 500; the first exhaust pipe is closed, SO2 is passed according to the predetermined pressure of the reactor 100, the upper limit of the pressure of the reactor 100 is set to 0 MPa, the first valve 101 is closed, the driving pump 800 is closed, and the reaction is sealed at a predetermined temperature of 10°C for 24h~48h; when the pressure in the reactor 100 decreases due to the dissolution or participation of SO2 in the reaction, the control mechanism controls the driving pump 800 to operate to pump the SO2 in the first circulation pipe 200 into the reactor 100, or opens the first valve 101 to pump SO2 into the reactor 100 until the predetermined pressure reaches -0.04Mpa;

[0097] (4) The first exhaust pipe 500 is opened, the first valve 101 is opened, and the control mechanism controls the driving pump 800 to operate to introduce N2 through the air inlet pipe 400 to replace the unreacted SO2 in the reactor 100. The replaced SO2 is discharged from the first exhaust pipe 500. The crude product in the reactor 100 is a viscous liquid. The reactor 100 is heated to 50°C, and the solvent and unreacted long-chain olefins are removed under a reduced pressure condition of -0.09 MPa, and the lost solvent is replenished.

[0098] Example 3

[0099] This embodiment provides a method for preparing an antistatic agent.

[0100] The antistatic agent preparation method of this embodiment adopts the antistatic agent preparation system 10 of embodiment 1, and comprises the following steps:

[0101] (1) Set the predetermined pressure of the reactor 100 to -0.04 MPa, and open the first valve 101, the second valve 102, and the third valve 103.

[0102] (2) 800 g of 1-decene and 1300 g of solvent toluene were placed in a reaction kettle 100, and 34 g of initiator benzoyl peroxide was added.

[0103] (3) The control mechanism controls the driving pump 800 to operate, and N2 is passed through the air inlet pipe 400 for 10 minutes to replace the air in the reactor 100, and the replaced air is discharged from the first exhaust pipe 500; the first exhaust pipe is closed, SO2 is passed according to the predetermined pressure of the reactor 100, and the upper limit of the pressure of the reactor 100 is set to 0.01 MPa, the first valve 101 is closed, the driving pump 800 is closed, and the reaction is sealed at a predetermined temperature of 10°C for 48 hours; when the pressure in the reactor 100 decreases due to the dissolution or participation of SO2 in the reaction, the control mechanism controls the driving pump 800 to operate to pump the SO2 in the first circulation pipe 200 into the reactor 100, or opens the first valve 101 to pump SO2 into the reactor 100 until the predetermined pressure reaches -0.04 MPa;

[0104] (4) The first exhaust pipe 500 is opened, the first valve 101 is opened, and the control mechanism controls the driving pump 800 to operate to introduce N2 through the air inlet pipe 400 to replace the unreacted SO2 in the reactor 100. The replaced SO2 is discharged from the first exhaust pipe 500. The crude product in the reactor 100 is a viscous liquid. The reactor 100 is heated to 50°C, and the solvent and unreacted long-chain olefins are removed under a reduced pressure condition of -0.09 MPa, and the lost solvent is replenished.

[0105] Example 4

[0106] This embodiment provides a method for preparing an antistatic agent.

[0107] The antistatic agent preparation method of this embodiment adopts the antistatic agent preparation system 10 of embodiment 1, and comprises the following steps:

[0108] (1) Set the predetermined pressure of the reactor 100 to -0.05 MPa, and open the first valve 101, the second valve 102, and the third valve 103.

[0109] (2) 800 g of 1-hexadecene and 1300 g of solvent xylene were placed in a reaction kettle 100, and 34 g of initiator benzoyl peroxide was added.

[0110] (3) The control mechanism controls the driving pump 800 to operate, and N2 is passed through the air inlet pipe 400 for 10 minutes to replace the air in the reactor 100, and the replaced air is discharged from the first exhaust pipe 500; the first exhaust pipe is closed, SO2 is passed according to the predetermined pressure of the reactor 100, the upper limit of the pressure of the reactor 100 is set to 0 MPa, the first valve 101 is closed, the driving pump 800 is closed, and the reaction is sealed at a predetermined temperature of 10°C for 24 hours; when the pressure in the reactor 100 decreases due to the dissolution or participation of SO2 in the reaction, the control mechanism controls the driving pump 800 to operate to pump the SO2 in the first circulation pipe 200 into the reactor 100, or opens the first valve 101 to pump SO2 into the reactor 100 until the predetermined pressure reaches -0.05 MPa;

[0111] (4) The first exhaust pipe 500 is opened, the first valve 101 is opened, and the control mechanism controls the driving pump 800 to operate to introduce N2 through the air inlet pipe 400 to replace the unreacted SO2 in the reactor 100. The replaced SO2 is discharged from the first exhaust pipe 500. The crude product in the reactor 100 is a viscous liquid. The reactor 100 is heated to 50°C, and the solvent and unreacted long-chain olefins are removed under a reduced pressure condition of -0.09 MPa, and the lost solvent is replenished.

[0112] According to the detection method of the conductivity of the antistatic agent in GB / T6539-1997, the antistatic agent prepared in Examples 2-4 was compared with the antistatic agent purchased on the market. The results are shown in Table 1.

[0113] Table 1

[0114]

[0115] It can be seen from Table 1 that the antistatic agent prepared by the antistatic agent preparation system 10 and the antistatic agent preparation method of the present application has a relatively small attenuation of conductivity data at 2min and 30min, and has a good antistatic effect. The performance parameters of the antistatic agent prepared by the antistatic agent preparation system 10 and the antistatic agent preparation method of the present application meet market needs.

[0116] The above-mentioned antistatic agent preparation system 10 adopts an airlift reactor 100 to prepare the antistatic agent, and SO2 can be added by controlling the upper limit of pressure, thereby avoiding the waste of SO2 caused by excessive introduction of SO2 into the reactor 100. The present application is based on the control of the upper limit of pressure, which can ensure that the amount of SO2 introduced into the reactor 100 is just right and no excess is introduced. During the reaction process, when SO2 dissolves or participates in the reaction, causing the pressure in the reactor 100 to drop, it is possible to control the automatic introduction of SO2 to replenish the reactor 100 to reach a predetermined pressure, or control the driving pump 800 to pump the SO2 in the first circulation pipeline 200 into the reactor 100, so that the residual part of the SO2 in the first circulation pipeline 200 and the part of the SO2 that overflows into the first circulation pipeline 200 when the viscous liquid is produced by the reaction can be utilized to the greatest extent, making full use of the SO2 in the sealing system and avoiding unnecessary waste of SO2; after the reaction is completed, N2 can be added by driving the pump 800 to remove excess sulfur dioxide in the reactor 100, at which time the sulfur dioxide can be discharged through the first exhaust pipeline 500 or collected in the recovery system for secondary recovery, and the solvent that removes sulfur dioxide can be retained for secondary use to avoid solvent waste. It can be seen that the present application can avoid SO2 waste, avoid solvent loss, and solve the problem of SO2 and solvent waste.

[0117] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0118] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An antistatic agent preparation system, characterized in that: The invention comprises a reactor, a first circulation pipeline, an air intake pipeline, a first exhaust pipeline, a driving pump, a first valve, a second valve, a third valve and a control mechanism, wherein one end of the first circulation pipeline is connected to the air inlet of the reactor and the other end is connected to the air outlet of the reactor, one end of the air intake pipeline is connected to a gas source and the other end is connected to the first circulation pipeline, the air intake pipeline is provided with the first valve, a section of the first circulation pipeline close to the air inlet is provided with the driving pump and the second valve, a section of the first circulation pipeline close to the air outlet is provided with the third valve, the first exhaust pipeline is connected to a position on the first circulation pipeline between the air outlet and the third valve, and the driving pump, the first valve, the second valve and the third valve are electrically connected to the control mechanism respectively.

2. The antistatic agent preparation system according to claim 1, characterized in that: One end of the first circulation pipeline connected to the air inlet of the reactor extends to the bottom of the reactor; And / or, a first pressure detection component is provided on the first circulation pipeline, and the first pressure detection component is electrically connected to the control mechanism.

3. The antistatic agent preparation system according to claim 1, characterized in that: A second exhaust pipe is provided at a section of the first circulation pipe close to the air outlet, and the second exhaust pipe is connected to a position on the first circulation pipe between the driving pump and the second valve.

4. The antistatic agent preparation system according to claim 3, characterized in that: The second exhaust pipe is provided with a fourth valve, and the fourth valve is electrically connected to the control mechanism; And / or, a second pressure detection component is provided on the second exhaust pipe, and the second pressure detection component is electrically connected to the control mechanism.

5. The antistatic agent preparation system according to any one of claims 1 to 4, characterized in that: The first exhaust pipe is provided with a fifth valve, and the fifth valve is electrically connected to the control mechanism.

6. The antistatic agent preparation system according to any one of claims 1 to 4, characterized in that: The antistatic agent preparation system further includes a heat exchange component and a second circulation pipeline. The heat exchange component is connected to the space between the outer shell and the inner shell of the reactor through the second circulation pipeline. The heat exchange component is used to perform heat exchange on the reactor.

7. The antistatic agent preparation system according to any one of claims 1 to 4, characterized in that: A discharge pipe is arranged at the bottom of the reactor, a sixth valve is arranged on the discharge pipe, and the sixth valve is electrically connected to the control mechanism.

8. A method for preparing an antistatic agent, characterized in that: The antistatic agent preparation system according to any one of claims 1 to 7 comprises the following steps: Setting a predetermined pressure of the reactor, and opening the first valve, the second valve, the third valve and the first exhaust pipe; Putting long-chain olefin and solvent into a reaction kettle according to a predetermined molar ratio, and adding initiator; The control mechanism controls the driving pump to operate, passes N2 through the air intake pipe to replace the air in the reactor, and the replaced air is discharged from the first exhaust pipe; closes the first exhaust pipe, passes SO2 according to the predetermined pressure of the reactor, closes the first valve, closes the driving pump, and seals the reaction at a predetermined temperature; when the pressure in the reactor drops due to the dissolution or reaction of SO2, the control mechanism controls the driving pump to pump the SO2 in the first circulation pipe into the reactor, or opens the first valve to pump SO2 into the reactor until the predetermined pressure is reached; The first exhaust pipe is opened, the first valve is opened, and the control mechanism controls the driving pump to introduce N2 through the air intake pipe to replace the unreacted SO2 in the reactor, and the replaced SO2 is discharged from the first exhaust pipe; the crude product in the reactor is a viscous liquid, the reactor is heated to 50°C~60°C, and the solvent and unreacted long-chain olefins are removed under reduced pressure.

9. The method for preparing an antistatic agent according to claim 8, characterized in that: The antistatic agent preparation method also meets at least one of the following conditions: (1) The molar ratio or mass ratio of long-chain olefin, solvent and initiator is (10-40): (58-89.5): (0.5-2); (2) The predetermined pressure is -0.04Mpa~0Mpa; (3) The predetermined temperature is 10°C to 15°C; (4) The decompression condition is -0.1Mpa~0Mpa; (5) The reaction time is 24h~48h; (6) After replacing the air in the reactor, the reactor is evacuated before SO2 is introduced according to a predetermined pressure of the reactor.

10. An antistatic agent, characterized in that The antistatic agent is prepared by using the antistatic agent preparation system described in any one of claims 1 to 7 or the preparation method described in any one of claims 8 to 9.

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