Chlorination reactor

Abstract

The utility model discloses a chlorination reactor which comprises a reaction tank, a feed port is formed in the top of the reaction tank, and a discharge port is formed in the bottom; a stirring mechanism is arranged in the reaction tank; a plurality of air inlets are formed in the bottom of the reaction tank; a gas distributor is fixed on the gas inlet; the gas distributor is used for introducing gas into the reaction tank and enabling the gas to be uniformly distributed into liquid in the reaction tank to react with the liquid. According to the chlorination reactor disclosed by the utility model, the gas distributor is arranged at the bottom of the reaction tank, so that gas is uniformly distributed around after entering the reaction tank and reacts with liquid, the stirring structure is improved, and under the action of the stirring component, the mixing degree between gas and liquid phases is improved, the gas and liquid reaction in the reaction tank is more sufficient, and the reaction efficiency is improved. Finally, the reaction efficiency and the product quality and purity are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of chemical equipment, concretely relates to a chlorination reactor. BACKGROUND

[0002] The production raw material of chlorinated paraffin-70 mainly includes 95% liquid paraffin containing linear normal alkane as raw material and chlorine gas, is prepared through chlorination reaction, and the chlorine content is 70+2%. In the production process of chlorinated paraffin-70, the chlorination reactor plays a vital role. The process mainly depends on the gas-liquid two-phase reaction between chlorine gas and molten paraffin, and the target product chlorinated paraffin-70 is generated through this chemical reaction. In the traditional production process, chlorine gas is usually introduced into the reactor through the discharge port at the bottom of the reactor, and the reactor is not equipped with a special gas distributor. In this case, the mixing and reaction of chlorine gas and molten paraffin mainly depend on the stirring action of the stirrer in the reactor.

[0003] However, this direct chlorine gas introduction method has significant limitations. Due to the lack of effective gas distribution mechanism, the distribution of chlorine gas in the reactor is often not uniform, and flow deviation may occur. This not only limits the contact area between chlorine gas and molten paraffin, but also greatly shortens the residence time of chlorine gas in the liquid layer. Due to insufficient mixing between the gas-liquid two phases, the reaction efficiency is severely affected, manifested as insufficient reaction, waste of raw material chlorine gas, and prolonged reaction period. Specifically, the uneven distribution of chlorine gas will cause the chlorine gas concentration in some areas to be too high, while in other areas, there may be insufficient chlorine gas. The high concentration area may produce by-products due to excessive reaction, while the low concentration area may reduce overall yield due to insufficient reaction. In addition, the shortening of the residence time of chlorine gas in the liquid layer also means a reduction in reaction time, further exacerbating the problem of insufficient reaction.

[0004] In summary, the traditional chlorination reactor has significant problems such as uneven distribution of chlorine gas, insufficient reaction, waste of raw materials, and long production cycle in the production process of chlorinated paraffin-70. These problems not only affect the quality and yield of the product, but also increase the production cost and limit the further improvement of production capacity. Therefore, it is necessary to improve the chlorination reactor to solve the above technical problems and improve the production efficiency and economic benefit of chlorinated paraffin-70. INVENTION CONTENTS

[0005] The utility model aims at the above-mentioned insufficient place and provides a kind of chlorination reactor, while realizing paraffin chlorination reaction preparation chlorinated paraffin-70, it is guaranteed that gas is uniformly distributed in the reactor interior, expand the contact area between chlorine gas and molten paraffin, make the mixing and reaction between gas-liquid two phases be sufficient, to improve the quality and purity of product. To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model relates to a chlorination reactor, including reaction jar, the top of reaction jar is equipped with inlet, and the bottom is equipped with discharge gate, be equipped with stirring mechanism in reaction jar, reaction jar bottom is equipped with a plurality of gas inlets, gas distributor is fixed on gas inlet, and gas distributor is used for introducing gas to reaction jar and makes gas even distribution to all directions with liquid and carries out the reaction.

[0007] Further, the gas distributor is a circular tube, the top is closed, the bottom is open, and a plurality of gas inlets are arranged on the side wall.

[0008] Further, the gas inlets are inclined downward and form an angle of 30-60° with the center line of the gas distributor.

[0009] Further, the gas distributor is fixed to the gas inlet of the reaction tank by a detachable flange.

[0010] Further, the stirring mechanism includes a rotating shaft, a driving member, and a stirring assembly. The top end of the rotating shaft penetrates the top of the reaction tank and is connected to the driving member. The bottom end of the rotating shaft is connected to the stirring assembly. The driving member drives the rotating shaft to rotate, and the rotating shaft drives the stirring assembly to rotate to stir the liquid and gas in the reaction tank.

[0011] Further, the stirring assembly includes a support rod and a stirring rod. The support rod is connected to the bottom of the rotating shaft. A plurality of stirring rods are arranged on the upper and lower surfaces of the support rod.

[0012] Further, the outer wall of the reaction tank is provided with a jacket. The jacket is connected to an external cooling mechanism. The cooling mechanism cools the shell through the jacket.

[0013] Further, the cooling mechanism includes a cooling liquid storage tank and a liquid pump. The cooling liquid storage tank is connected to the jacket through a pipeline. The pipeline is provided with a liquid pump. The liquid pump drives the cooling liquid in the cooling liquid storage tank to circulate in the jacket through the pipeline.

[0014] Further, the reaction tank is provided with a liquid level sensor and a temperature sensor.

[0015] The utility model has the advantages of:

[0016] The utility model discloses a kind of chlorination reactors, including reaction tank;The top of the reaction tank is equipped with inlet, bottom is equipped with discharge port;Stirring mechanism is equipped in the reaction tank;The bottom of the reaction tank is equipped with several gas inlets;Gas distributor is fixed on the gas inlet;The gas distributor is used to introduce gas into reaction tank, and make gas evenly distributed to liquid in reaction tank around, react with liquid.The utility model discloses a kind of chlorination reactors by setting gas distributor in the bottom of reaction tank, make gas enter reaction tank and evenly distribute around, react with liquid, and improve stirring structure, under the action of stirring assembly, the mixing degree between gas-liquid two phases is improved, the gas-liquid reaction in reaction tank is more sufficient, finally improve reaction efficiency and the quality and purity of product. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structural diagram of the utility model chlorination reactor;

[0018] Fig. 2 It is the structural diagram of gas distributor;

[0019] In the drawing, 1-reaction tank, 2-stirring mechanism, 21-rotating shaft, 22-driving part, 23-supporting rod, 24-stirring rod, 3-jacket, 4-gas distributor, 41-gas inlet hole, 6-discharge port, 7-inlet. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings; although example embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly understood, and so that the scope of the present disclosure can be conveyed to those skilled in the art.

[0021] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order of performance. It is also to be understood that additional or alternative steps can be employed.

[0022] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0023] Spatially relative terms, such as "inner," "outer," "inward," "outward," "lower," "bottom," "top," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0024] Embodiment One

[0025] See attached Figs. 1-2The chlorination reactor of this invention includes a reaction tank 1. An inlet 7 is located at the top of the reaction tank 1, through which liquid paraffin enters the reaction tank 1. An outlet 6 is located at the bottom, through which the product obtained from the solid-liquid chlorination reaction in the reaction tank 1 is discharged. Several gas inlets are located at the bottom of the reaction tank 1, evenly distributed along the centerline. A gas distributor 4 is fixed to each gas inlet using a detachable flange, facilitating disassembly, maintenance, and replacement. The number of gas inlets can be rationally set according to the gas flow rate and the specific dimensions of the gas distributor 4. Gas enters the reaction tank 1 through the gas distributor 4, ensuring even distribution of the gas and liquid within the tank, thus achieving thorough gas-liquid mixing, improving the conversion rate of the raw material chlorine, and shortening the reaction cycle. A stirring mechanism 2 is also provided inside the reaction tank 1. The stirring mechanism 2 agitates the gas and liquid within the reaction tank 1, enhancing gas-liquid mixing, increasing the contact area between the two, and improving the efficiency and yield of the chlorination reaction. The chlorination reactor of this invention uses a gas distributor 4 installed at the bottom of the reaction tank 1 to distribute the gas evenly around the tank after it enters, thus ensuring thorough mixing of the gas and liquid phases. In addition, the stirring structure further enhances the mixing of the gas and liquid phases, resulting in a more complete gas-liquid reaction in the reaction tank 1. Ultimately, this improves the reaction efficiency and the quality and purity of the product.

[0026] Specifically, the gas distributor 4 is a cylindrical tube made of polytetrafluoroethylene, such as... Fig. 2 As shown, the top of the gas distributor 4 is closed, while the bottom is open. Several air inlets 41 are formed on the side wall of the gas distributor 4, extending 200-400 mm from the air inlet of the reaction tank 1. These air inlets 41 are arranged in an equilateral triangle on the side wall of the gas distributor 4, with the outlet direction of the air inlets 41 angled downwards at 30-60° to the centerline of the gas distributor 4. The diameter of the air inlets 41 is 2-10 mm, preferably 5-6 mm. The number of air inlets 41 is preferably such that the total cross-sectional area of ​​the air inlets 41 is close to the cross-sectional area of ​​the gas distributor 4. Through the gas distributor 4, the gas is evenly distributed downwards and outwards into the liquid. Combined with the mixing action of the stirring mechanism 2, this improves mass transfer problems such as uneven gas distribution and flow deviation, ensuring thorough mixing of the gas and liquid phases. This increases the conversion rate of the raw material chlorine, shortens the reaction cycle, and improves product purity.

[0027] Specific, stirring mechanism 2 includes the rotating shaft 21, drive 22 and stirring assembly, wherein the stirring assembly is support rod 23 and stirring rod 24, rotating shaft 21 top end through the top of the reaction tank 1 and drive 22 is connected, the bottom end is connected with support rod 23, support rod 23 upper and lower surface along the length direction of support rod 23 is respectively provided with a plurality of stirring rod 24, wherein the stirring rod 24. By improving the stirring mechanism 2, to increase the stirring area of gas-liquid two-phase, so that gas-liquid two-phase fully mixed, improve the conversion rate of raw material chlorine, shorten the reaction period.

[0028] Specific, jacket 3 is provided on the outside wall of the reaction tank 1, jacket 3 is hollow structure, jacket 3 is provided with liquid inlet and outlet, the liquid inlet and outlet of jacket 3 is connected with external cooling mechanism, external cooling mechanism is used for controlling the temperature of reaction tank 1, avoid the temperature in the reaction tank 1 because of chlorination reaction rises too fast, influence chlorination reaction process and equipment utilization. Cooling mechanism includes cooling liquid storage tank and liquid pump, cooling liquid storage tank is connected with the liquid inlet and outlet of jacket 3 through pipeline, cooling liquid storage tank is used for storing cooling liquid, liquid pump is provided on the pipeline, cooling liquid pump is pumped out from the inside of cooling liquid storage tank, and is transported to the liquid inlet of jacket 3 through pipeline and enters jacket 3, and the reaction tank 1 is cooled, and the cooling liquid flows out from the liquid outlet of jacket 3 and flows back to the cooling liquid storage tank through the pipeline. The cooling liquid in the cooling liquid storage tank is driven by the liquid pump to circulate in the jacket 3 through the pipeline, so that the reaction tank 1 is cooled.

[0029] Specific, liquid level sensor and temperature sensor are arranged on the reaction tank 1. The liquid level sensor is used to measure the liquid level of the material in the reaction tank 1, so that the operator can know the filling condition of the material in the reaction tank 1, and ensure that the material does not overflow or is lower than the safe operation level. The temperature sensor is used to measure the temperature of the material in the reaction tank 1, so as to control the temperature in the reaction tank 1 and ensure the smooth progress of the reaction.

[0030] All the technical features in the embodiment can be freely combined according to actual needs. The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the utility model, which should be covered in the claim scope of the utility model. The technical, shape and structure parts not described in detail in the utility model are known technologies.

[0031] The above embodiments are the preferred implementation of the utility model, in addition to this, other ways of implementation are also included, any obvious replacement without departing from the technical solution concept is within the protection scope of the utility model.

Claims

1. A chlorination reactor characterized by: The utility model provides a kind of reaction tank, including reaction tank (1);The top of the reaction tank (1) is equipped with inlet (7), bottom is equipped with discharge port (6);The reaction tank (1) is equipped with stirring mechanism (2) inside;The bottom of the reaction tank (1) is equipped with several gas inlets;Gas distributor (4) is fixed on the gas inlet;The gas distributor (4) is used to introduce gas into the reaction tank (1), and makes gas evenly distributed to the periphery, and reacts with liquid.

2. A chlorination reactor according to claim 1, characterized in that: The gas distributor (4) is circular tube, top is closed arrangement, bottom is open arrangement, and a plurality of gas inlets (41) are arranged on the side wall;The gas inlets (41) are distributed in equilateral triangle on the side wall of the gas distributor (4).

3. A chlorination reactor according to claim 2, characterized in that: The gas outlet direction of the gas inlet (41) is obliquely downward and forms an angle of 30-60° with the center line of the gas distributor (4);The diameter of the gas inlet (41) is 2-10mm.

4. A chlorination reactor according to any one of claims 1 to 3, characterized in that: The gas distributor (4) is fixed on the gas inlet of the reaction tank (1) by detachable flange.

5. A chlorination reactor according to claim 1, characterized in that: The stirring mechanism (2) includes rotating shaft (21), driving part (22) and stirring assembly;The top end of the rotating shaft (21) penetrates the top of the reaction tank (1) and is connected with the driving part (22), and the bottom end is connected with the stirring assembly;The driving part (22) drives the rotating shaft (21) to rotate, and the rotating shaft (21) drives the stirring assembly to rotate to stir the liquid and gas in the reaction tank (1).

6. A chlorination reactor according to claim 5, characterized in that: The stirring assembly includes support rod (23) and stirring rod (24);The support rod (23) is connected with the bottom of the rotating shaft (21);A plurality of stirring rods (24) are arranged on the upper and lower surfaces of the support rod (23).

7. A chlorination reactor according to claim 1, characterized in that: The outer side wall of the reaction tank (1) is provided with a jacket (3);The jacket (3) is connected with an external cooling mechanism;The cooling mechanism cools the shell through the jacket (3).

8. A chlorination reactor according to claim 7, characterized in that: The cooling mechanism includes a cooling liquid storage tank and a liquid pump;The cooling liquid storage tank is connected with the jacket (3) through a pipeline;A liquid pump is arranged on the pipeline;The liquid pump is used to drive the cooling liquid in the cooling liquid storage tank to circulate in the jacket (3) through the pipeline.

9. A chlorination reactor according to claim 1, characterized in that: The reaction tank (1) is provided with a liquid level sensor and a temperature sensor.

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