Preparation system of diesel oil anti-wear agent

Abstract

The utility model provides a preparation system of a diesel oil anti-wear agent, and relates to the technical field of oil product production systems. The unsaturated dicarboxylic anhydride storage tank and the fatty alcohol storage tank are arranged, fatty alcohol from the fatty alcohol storage tank is introduced into the dynamic tubular reactor and reacts with unsaturated dicarboxylic anhydride in the dynamic tubular reactor, and the unsaturated dicarboxylic monoester composition diesel oil anti-wear agent is obtained. Besides, according to the diesel oil anti-wear agent preparation system provided by the utility model, the dynamic tubular reactor is adopted as a main device for reaction, so that the continuous reaction process can be realized, the continuous production process of the diesel oil anti-wear agent is realized, and the diesel oil anti-wear agent preparation system has the advantages of simplicity and convenience in production, high production efficiency and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of oil product production systems, in particular to a preparation system for a diesel anti-wear agent. Background Art

[0002] In recent years, with the continuous upgrading of diesel product quality standards and increasingly stringent environmental protection index requirements, reducing the sulfur content in diesel is an inevitable trend. At present, the sulfur mass fraction of National VI diesel products is required to be no more than 10 mg / kg. Usually, the hydrogenation process is used for desulfurization in the diesel refining and production process. However, the hydrogenation process will also simultaneously reduce the content of naturally occurring lubricating substances such as polar nitrogen-containing, oxygen-containing compounds and polycyclic aromatic hydrocarbons in diesel while desulfurizing, resulting in the attenuation of diesel lubricity, which will in turn increase the wear of the engine during vehicle use and shorten the service life of the engine. Therefore, at present, diesel anti-wear agents are generally added to diesel to make up for the lack of lubricity of hydrogenated diesel, thereby improving the lubrication performance of diesel.

[0003] Diesel anti-wear agents mainly include derivatives of long-chain alcohols, ethers, amides, fatty acids, fatty acid esters or salts. The existing low-sulfur diesel anti-wear agents used in industry mainly include fatty acid type and fatty acid ester type anti-wear agents. Although the cost of using fatty acid type anti-wear agents to solve the problem of diesel lubricity is relatively low, with the upgrading of diesel emission standards and the deterioration of lubricity, the dosage is too large, resulting in excessive diesel acidity and increased corrosion risk. Fatty acid ester anti-wear agents have the advantages of good anti-wear performance and low dosage. However, in the existing fatty acid ester type diesel anti-wear agent production system, the reaction time is still long, and some reactions are carried out intermittently in a reactor with mechanical stirring, and continuous production cannot be achieved.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model aims to provide a preparation system of a diesel antiwear agent, which can realize continuous production and improve production efficiency.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a system for preparing a diesel antiwear agent, comprising an unsaturated dicarboxylic acid anhydride storage tank, a fatty alcohol storage tank, a static mixer, a dynamic tubular reactor, a heat exchanger and a product storage tank.

[0008] The outlet of the fatty alcohol storage tank is connected to the inlet of the static mixer, the outlet of the static mixer and the outlet of the unsaturated dicarboxylic anhydride storage tank are both connected to the inlet of the dynamic tubular reactor, and the outlet of the dynamic tubular reactor is connected to the heat exchanger and the product storage tank in sequence.

[0009] Optionally, an anhydride metering pump is also included, and the outlet end of the unsaturated dicarboxylic acid anhydride storage tank is connected to the inlet end of the anhydride metering pump through a pipeline, and the outlet end of the anhydride metering pump is connected to the inlet end of the unsaturated dicarboxylic acid anhydride storage tank and the inlet end of the dynamic tubular reactor through pipelines.

[0010] Optionally, an alcohol metering pump is further included, the outlet end of the fatty alcohol storage tank is connected to the inlet end of the alcohol metering pump through a pipeline, and the outlet end of the alcohol metering pump is connected to the inlet end of the fatty alcohol storage tank and the inlet end of the static mixer through pipelines.

[0011] Optionally, it also includes a solvent storage tank and a solvent metering pump, the outlet end of the solvent storage tank is connected to the inlet end of the static mixer, the outlet end of the solvent storage tank is connected to the inlet end of the solvent metering pump through a pipeline, and the outlet end of the solvent metering pump is respectively connected to the inlet end of the fatty alcohol storage tank and the inlet end of the static mixer through pipelines.

[0012] Optionally, a product metering pump is also included, the outlet end of the product storage tank is connected to the inlet end of the product metering pump through a pipeline, and the outlet end of the product metering pump is connected to the inlet end of the product storage tank and the discharge pipe through pipelines respectively.

[0013] Optionally, the dynamic tubular reactor includes any one of a silicon carbide dynamic tubular reactor, an optical glass dynamic tubular reactor, a Hastelloy dynamic tubular reactor and a 316L dynamic tubular reactor.

[0014] Optionally, a sampling device is also included, and the sampling device is connected to a discharge pipe connected to the outlet end of the product storage tank.

[0015] The beneficial effects of the embodiments of the utility model are:

[0016] The utility model provides a diesel antiwear agent preparation system, which provides an unsaturated dicarboxylic acid anhydride storage tank and a fatty alcohol storage tank, passes the fatty alcohol from the fatty alcohol storage tank into a dynamic tubular reactor, and reacts with the unsaturated dicarboxylic acid anhydride in the dynamic tubular reactor to obtain an unsaturated dicarboxylic acid monoester composition diesel antiwear agent. In addition, the diesel antiwear agent preparation system provided by the utility model can realize continuous reaction process by adopting a dynamic tubular reactor as the main reaction device, thereby realizing continuous production process of diesel antiwear agent, and has the advantages of simple production, high production efficiency, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A process flow chart of a system for preparing a diesel antiwear agent provided in the first embodiment of the utility model.

[0019] Icons: 100-preparation system of diesel antiwear agent; 101-unsaturated dicarboxylic acid anhydride storage tank; 102-anhydride metering pump; 103-solvent storage tank; 104-solvent metering pump; 105-fatty alcohol storage tank; 106-alcohol metering pump; 107-static mixer; 108-dynamic tubular reactor; 109-heat exchanger; 110-product storage tank; 111-product metering pump. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] First embodiment

[0027] Please refer to Figure 1 The present embodiment provides a system 100 for preparing a diesel antiwear agent, comprising an unsaturated dicarboxylic acid anhydride storage tank 101, an anhydride metering pump 102, a solvent storage tank 103, a solvent metering pump 104, a fatty alcohol storage tank 105, an alcohol metering pump 106, a static mixer 107, a dynamic tubular reactor 108, a heat exchanger 109, a product storage tank 110 and a product metering pump 111.

[0028] The unsaturated dicarboxylic anhydride storage tank 101 is used to store C4-C6 unsaturated dicarboxylic anhydride, such as itaconic anhydride, tertaconic anhydride, maleic anhydride, etc. The unsaturated dicarboxylic anhydride storage tank 101 has an inlet and an outlet, the outlet of the unsaturated dicarboxylic anhydride storage tank 101 is located at the bottom of the tank, and the inlet of the unsaturated dicarboxylic anhydride storage tank 101 is located at the top of the tank. The outlet of the unsaturated dicarboxylic anhydride storage tank 101 is connected to the inlet end of the anhydride metering pump 102 through a pipeline, and the outlet end of the anhydride metering pump 102 is connected to the inlet end of the unsaturated dicarboxylic anhydride storage tank 101 and the inlet end of the dynamic tubular reactor 108 through pipelines.

[0029] The anhydride metering pump 102 can calculate the content of the material passing through the anhydride metering pump 102, so as to quantitatively transport the material in the unsaturated dicarboxylic anhydride storage tank 101 to the dynamic tubular reactor 108. When the volume of the material calculated by the anhydride metering pump 102 to pass meets the quantitative transportation requirement, the excess material will return to the unsaturated dicarboxylic anhydride storage tank 101 along the pipeline, and the anhydride metering pump 102 will stop pumping out the material.

[0030] The control process of whether the material in the unsaturated dicarboxylic anhydride storage tank 101 flows into the dynamic tubular reactor 108 or flows back to the unsaturated dicarboxylic anhydride storage tank 101 can be controlled by a machine control system, or the corresponding control valve can be manually closed.

[0031] Fatty alcohol storage tank 105 is used to store C2-C18 fatty alcohol, such as ethanol, propanol, butanol, amyl alcohol, hexanol, heptanol, octanol, etc. Fatty alcohol storage tank 105 has two inlets and one outlet, and the two inlets of fatty alcohol storage tank 105 are both located at the top of the tank, one is the alcohol feed port, and the other is the solvent feed port, and the outlet of fatty alcohol storage tank 105 is located at the bottom of the tank. The outlet end of fatty alcohol storage tank 105 is connected to the inlet end of alcohol metering pump 106 through a pipeline, and the outlet end of alcohol metering pump 106 is connected to the alcohol feed port of fatty alcohol storage tank 105 and the inlet end of static mixer 107 through a pipeline.

[0032] The alcohol metering pump 106 can calculate the content of the material passing through the alcohol metering pump 106, so as to quantitatively transport the material in the fatty alcohol storage tank 105 to the static mixer 107. When the volume of the material calculated by the alcohol metering pump 106 to pass meets the quantitative transportation requirements, the excess material will return to the fatty alcohol storage tank 105 along the pipeline, and the alcohol metering pump 106 will stop pumping out the material.

[0033] The control process of whether the material in the fatty alcohol storage tank 105 flows into the static mixer 107 or flows back to the fatty alcohol storage tank 105 can be controlled by the control system of the machine, or the corresponding control valve can be closed manually.

[0034] The solvent storage tank 103 is used to store solvents, such as water and other solvents. The solvent storage tank 103 has an outlet, and the outlet of the solvent storage tank 103 is located at the bottom of the tank. The outlet of the solvent storage tank 103 is connected to the inlet end of the solvent metering pump 104 through a pipeline, and the outlet end of the solvent metering pump 104 is respectively connected to the solvent feed port of the fatty alcohol storage tank 105 and the inlet end of the static mixer 107 through pipelines.

[0035] The solvent in the solvent storage tank 103 can flow into the static mixer 107 through the pipeline and the solvent metering pump 104 to be mixed with the alcohol in the static mixer 107, or can flow directly into the fatty alcohol storage tank 105 to be pre-mixed with the fatty alcohol, and then enter the static mixer 107 through the pipeline for mixing. Further, the outlet end of the static mixer 107 and the outlet end of the unsaturated dicarboxylic anhydride storage tank 101 are both connected to the inlet end of the dynamic tubular reactor 108, and the outlet end of the dynamic tubular reactor 108 is connected to the heat exchanger 109 and the product storage tank 110 in sequence.

[0036] The anhydride material from the unsaturated dicarboxylic acid anhydride storage tank 101 enters the dynamic tubular reactor 108, and reacts with the alcohol-solvent mixture flowing out of the static mixing heat exchanger 109 in the dynamic tubular reactor 108 to generate an unsaturated dicarboxylic acid monoester composition diesel antiwear agent. The diesel antiwear agent is cooled by heat exchange in the heat exchanger 109 and enters the product storage tank 110 for temporary storage.

[0037] In this embodiment, the outlet end of the product storage tank 110 is connected to the inlet end of the product metering pump 111 through a pipeline, and the outlet end of the product metering pump 111 is connected to the inlet end of the product storage tank 110 and the discharge pipe through pipelines.

[0038] Therefore, the volume of the diesel anti-wear agent stored in the product storage tank 110 pumped out to the discharge pipe can be calculated by the product metering pump 111 , and the excess diesel anti-wear agent returns to the product storage tank 110 .

[0039] The discharge pipe can be directly connected to the packaging barrel of the diesel anti-wear agent, or it can be connected to the pipeline of the next process. The destination of the diesel anti-wear agent can be selected according to actual needs.

[0040] In this embodiment, the dynamic tubular reactor 108 is a 316L dynamic tubular reactor 108 .

[0041] The present embodiment provides a system 100 for preparing a diesel antiwear agent, and its working principle is as follows:

[0042] The anhydride metering pump 102 pumps out the material in the unsaturated dicarboxylic anhydride storage tank 101 and transports it to the dynamic tubular reactor 108 through a pipeline. The excess material will return to the unsaturated dicarboxylic anhydride storage tank 101 along the pipeline, and the anhydride metering pump 102 stops pumping out the material. The alcohol metering pump 106 pumps out the material in the fatty alcohol storage tank 105 and transports it to the static mixer 107 through a pipeline. The excess material will return to the fatty alcohol storage tank 105 along the pipeline, and the alcohol metering pump 106 stops pumping out the material. The solvent metering pump 104 pumps out the solvent in the solvent storage tank 103 and transports it to the static mixer 107 through a pipeline. The fatty alcohol and the solvent are evenly mixed in the static mixer 107 to form an alcohol-solvent mixture, which then enters the dynamic tubular reactor 108 along the pipeline. The anhydride material and the alcohol-solvent mixture react in the dynamic tubular reactor 108 to generate an unsaturated dicarboxylic acid monoester composition diesel anti-wear agent, which is cooled by heat exchanger 109 and temporarily stored in the product storage tank 110. When the diesel anti-wear agent needs to be pumped out, the product metering pump 111 is used to pump out the diesel anti-wear agent for packaging, storage, testing or further purification.

[0043] Alternatively, the anhydride metering pump 102 pumps out the material in the unsaturated dicarboxylic anhydride storage tank 101, and transports it to the dynamic tubular reactor 108 through a pipeline, and the excess material returns to the unsaturated dicarboxylic anhydride storage tank 101 along the pipeline, and the anhydride metering pump 102 stops pumping out the material. The solvent metering pump 104 pumps out the solvent in the solvent storage tank 103, and transports it to the fatty alcohol storage tank 105 through a pipeline, and the solvent and the alcohol material are preliminarily mixed in the fatty alcohol storage tank 105 to form a mixture, and then the alcohol metering pump 106 pumps out the mixture in the fatty alcohol storage tank 105, and transports it to the static mixer 107 through a pipeline, and the excess material returns to the fatty alcohol storage tank 105 along the pipeline, and the alcohol metering pump 106 stops pumping out the material. The mixture of the alcohol material and the solvent is fully mixed in the static mixer 107 to form an alcohol-solvent mixture, and then enters the dynamic tubular reactor 108 along the pipeline. The anhydride material and the alcohol-solvent mixture react in the dynamic tubular reactor 108 to generate an unsaturated dicarboxylic acid monoester composition diesel anti-wear agent, which is cooled by heat exchanger 109 and temporarily stored in the product storage tank 110. When the diesel anti-wear agent needs to be pumped out, the product metering pump 111 is used to pump out the diesel anti-wear agent for packaging, storage, testing or further purification.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A system for preparing a diesel antiwear agent, characterized in that: Including unsaturated dicarboxylic anhydride storage tanks, fatty alcohol storage tanks, static mixers, dynamic tubular reactors, heat exchangers and product storage tanks; The outlet end of the fatty alcohol storage tank is connected to the inlet end of the static mixer, the outlet end of the static mixer and the outlet end of the unsaturated dicarboxylic acid anhydride storage tank are both connected to the inlet end of the dynamic tubular reactor, and the outlet end of the dynamic tubular reactor is connected to the heat exchanger and the product storage tank in sequence.

2. The preparation system of diesel antiwear agent according to claim 1, characterized in that: It also includes an anhydride metering pump, the outlet end of the unsaturated dicarboxylic acid anhydride storage tank is connected to the inlet end of the anhydride metering pump through a pipeline, and the outlet end of the anhydride metering pump is connected to the inlet end of the unsaturated dicarboxylic acid anhydride storage tank and the inlet end of the dynamic tubular reactor through pipelines.

3. The preparation system of diesel antiwear agent according to claim 1, characterized in that: It also includes an alcohol metering pump, the outlet end of the fatty alcohol storage tank is connected to the inlet end of the alcohol metering pump through a pipeline, and the outlet end of the alcohol metering pump is connected to the inlet end of the fatty alcohol storage tank and the inlet end of the static mixer through pipelines.

4. The preparation system of diesel antiwear agent according to claim 1, characterized in that: It also includes a solvent storage tank and a solvent metering pump, wherein the outlet end of the solvent storage tank is communicated with the inlet end of the static mixer, the outlet end of the solvent storage tank is connected to the inlet end of the solvent metering pump through a pipeline, and the outlet end of the solvent metering pump is respectively connected to the inlet end of the fatty alcohol storage tank and the inlet end of the static mixer through pipelines.

5. The preparation system of diesel antiwear agent according to claim 1, characterized in that: It also includes a product metering pump, the outlet end of the product storage tank is connected to the inlet end of the product metering pump through a pipeline, and the outlet end of the product metering pump is connected to the inlet end of the product storage tank and the discharge pipe through pipelines respectively.

6. The system for preparing diesel antiwear agent according to any one of claims 2 to 5, characterized in that: The dynamic tubular reactor includes any one of a silicon carbide dynamic tubular reactor, an optical glass dynamic tubular reactor, a Hastelloy dynamic tubular reactor and a 316L dynamic tubular reactor.

7. The system for preparing diesel antiwear agent according to claim 6, characterized in that: The dynamic tubular reactor is a 316L dynamic tubular reactor.

8. The system for preparing diesel antiwear agent according to claim 1, characterized in that: It also includes a sampling device, which is communicated with a discharge pipe connected to the outlet end of the product storage tank.

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