Gas phase reaction device for chemical production

Abstract

The utility model relates to the technical field of chemical production reaction devices, in particular to a gas phase reaction device for chemical production. Comprising a tank body, a mixed gas inlet is formed in the lower portion of the side wall of the tank body, and a mixed gas outlet is formed in the upper portion of the side wall of the tank body. According to the utility model, the technical measure that the equipartition pore plate for dividing the internal space of the tank body is arranged in the tank body is adopted, so that the mixing uniformity of all components of mixed gas can be effectively improved; by adopting the technical measures of arranging the mixed gas acceleration assembly at the bottom of the tank body and arranging the mixed gas heat transfer assembly in the tank body, the mixed gas acceleration assembly can increase the flow rate of the mixed gas in the tank body, and the mixed gas heat transfer assembly can provide the temperature required by the reaction of the mixed gas in the tank body; the combination of the two can effectively improve the reaction efficiency among the components of the mixed gas, thereby effectively shortening the time of the process flow of the gas phase reaction and effectively improving the overall operation efficiency of the device.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical production reaction device technical field, concretely relates to a gas phase reaction device for chemical production. BACKGROUND

[0002] Gas phase reaction refers to the chemical reactions that occur between mixed gases, which are usually carried out under high temperature, high pressure or in the presence of specific catalysts, aiming to convert raw gas (such as hydrocarbons, synthesis gas, etc.) into more valuable chemicals, fuels and intermediate products.

[0003] Among them, the processes of ethylene oxidation to prepare ethylene oxide, propylene ammoxidation to prepare acrylonitrile, etc. rely on efficient gas phase oxidation technology. These technologies not only require catalysts with high activity and selectivity, but also need to strictly control the space velocity and reaction temperature to ensure product quality and yield.

[0004] However, in the prior art, some of the mixed gases that react in the gas phase reaction device are light gases, and some are heavy gases. During the reaction, light gases naturally gather at the top end of the inner cavity of the reaction device, and heavy gases deposit at the bottom end of the inner cavity of the reaction device. This physical separation seriously hinders the effective contact and uniform mixing of gas molecules. This leads to uneven reaction between the components of the mixed gas, and severely limits the improvement of the efficiency of the gas phase reaction. SUMMARY

[0005] The utility model provides a gas phase reaction device for chemical production, which aims to optimize the gas mixing and distribution mechanism to solve the technical problems of uneven reaction between the components of the mixed gas and low reaction efficiency in the device applied in the gas phase reaction in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] The utility model provides a gas phase reaction device for chemical production, which comprises a tank body, a mixed gas inlet is arranged at the lower part of the side wall of the tank body, and a mixed gas outlet is arranged at the upper part of the side wall of the tank body.

[0008] The inside of the tank body is provided with a uniform distribution hole plate that divides the internal space, the lower part of the uniform distribution hole plate is a mixed gas premixing chamber, and the upper part of the uniform distribution hole plate is a mixed gas reaction chamber.

[0009] The bottom of the tank body is provided with a mixed gas acceleration assembly, the mixed gas acceleration assembly comprises a driving motor and a fan blade, the driving motor is arranged at the center of the bottom surface of the tank body, and the driving end of the driving motor penetrates the bottom surface of the tank body and enters the inside of the tank body to drive the fan blade.

[0010] The inside of the tank body is provided with a mixed gas heat transfer assembly, which comprises a heat transfer medium inlet installed at the top of the tank body, a heat transfer medium coil extending from the top of the tank body to the inside of the tank body, and a heat transfer medium outlet arranged in the lower part of the side wall of the tank body.

[0011] As a further supplement to the utility model, the middle part of the tank body is provided with a nitrogen inlet.

[0012] As a further supplement to the utility model, the middle part of the tank body is provided with a thermometer port.

[0013] As a further supplement to the utility model, one end of the mixed gas inlet extends to the inside of the tank body, and the end located in the inside of the tank body is provided with a hollow and surface-opening several through holes even distribution ball.

[0014] As a further supplement to the utility model, the diameter of the through hole on the even distribution ball is smaller than that of the through hole on the even distribution hole plate.

[0015] As a further supplement to the utility model, the bottom of the tank body is provided with a supporting leg.

[0016] As a further supplement to the utility model, the lower part of the side wall of the tank body is provided with an inspection hole.

[0017] The utility model discloses reached the beneficial effects are:

[0018] The utility model discloses the technical measures that even distribution ball is arranged on the mixed gas inlet and the even distribution hole plate that divides the space in the tank body is arranged in the inside of the tank body, the mixed gas premixing chamber is below the even distribution hole plate, and the mixed gas reaction chamber is above the even distribution hole plate, so that the mixed gas is premixed before entering the reaction operation, and the uniformity of the mixed gas between the components can be effectively improved, the reaction between the components of the mixed gas is more complete, and the stability of the gas phase reaction is improved.

[0019] The utility model discloses the technical measures that the mixed gas accelerating assembly is arranged at the bottom of the tank body and the mixed gas heat transfer assembly is arranged in the inside of the tank body, the mixed gas accelerating assembly can improve the flow rate of the mixed gas in the tank body, the mixed gas heat transfer assembly can provide the temperature required for the reaction of the mixed gas in the tank body, and the above two can effectively improve the reaction efficiency between the components of the mixed gas, and the time of the gas phase reaction process is effectively shortened, and the overall operation efficiency of the device is effectively improved.

[0020] The temperature monitoring part installed on the thermometer port can transmit the temperature data inside the tank to the control chip in real time, the control chip can adjust the flow of the heat transfer medium inside the mixed gas heat transfer assembly in real time according to the required temperature of the mixed gas operation, keep the temperature inside the tank at a stable level, improve the operation stability of the mixed gas operation, and when the temperature inside the tank exceeds the upper limit value set by the control chip, the control chip controls the nitrogen inlet to introduce nitrogen into the tank, since the nitrogen is inert gas, the further expansion of the safety accident can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the structures shown in these drawings without creative labor.

[0022] Figure 1 is a front view of the structure of the present application.

[0023] Figure 2 is Figure 1 is an enlarged structure diagram of part B in the figure.

[0024] Figure 3 is a top view of the uniform hole plate of the present application.

[0025] Figure 4 is a front view of the structure of the present application.

[0026] In the figure, 1 is a tank, 2 is a mixed gas inlet, 3 is a mixed gas outlet, 4 is a uniform hole plate, 5 is a mixed gas accelerating assembly, 501 is a driving motor, 502 is a fan blade, 6 is a mixed gas heat transfer assembly, 601 is a heat transfer medium inlet, 602 is a heat transfer medium coil, 603 is a heat transfer medium outlet, 7 is a nitrogen inlet, 8 is a thermometer port, 9 is a uniform ball, 10 is a supporting leg, and 11 is an inspection hole. DETAILED DESCRIPTION

[0027] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0028] It should be noted that if the present application embodiments involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0029] In addition, if the present application embodiments involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B schemes that satisfy at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0030] The following will be combined with the drawings of the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Figures 1-4To make further detailed description of the application, the application embodiment discloses a kind of gas phase reaction device for chemical production, refer to the drawing shown, including tank body 1, the lower part of the side wall of the tank body 1 is provided with mixed gas inlet 2, the mixed gas inlet 2 is fixedly connected with mixed gas inlet pipeline.The upper part of the side wall of the tank body 1 is provided with mixed gas outlet 3, and the mixed gas outlet 3 is fixedly connected with mixed gas outlet pipeline.The inside of the tank body 1 is provided with the equal division orifice plate 4 that divides its internal space, and the equal division orifice plate 4 below is mixed gas premixing chamber, and the equal division orifice plate 4 above is mixed gas reaction chamber.The bottom of the tank body 1 is provided with mixed gas acceleration assembly 5, and the mixed gas acceleration assembly 5 includes drive motor 501 and fan blade 502;The drive motor 501 is arranged at the center of the bottom surface of the tank body 1, and the driving end of the drive motor 501 penetrates the bottom surface of the tank body 1 into the inside of the tank body 1 and is transmissionally connected with the fan blade 502, and the drive motor 501 and the fan blade 502 are both explosion-proof components.The inside of the tank body 1 is provided with mixed gas heat transfer assembly 6, and the mixed gas heat transfer assembly 6 includes heat transfer medium inlet 601 installed on the top of the tank body 1, heat transfer medium coil 602 extending from the top of the tank body 1 to the inside of the tank body 1 and heat transfer medium outlet 603 arranged in the middle and lower part of the side wall of the tank body 1;The inlet end of the heat transfer medium coil 602 is communicated with the heat transfer medium inlet 601, and the outlet end of the heat transfer medium coil 602 is communicated with the heat transfer medium outlet 603;The heat transfer medium inlet 601 is fixedly connected with steam pipeline, and the heat transfer medium outlet 603 is fixedly connected with condensate pipeline.

[0031] Specifically, the working principle of the utility model is:

[0032] First, mixed gas enters the mixed gas premixing chamber of the tank body 1 through the mixed gas inlet 2 for preliminary mixing, and then the drive motor 501 drives the fan blade 502 to rotate to form upward airflow, so as to accelerate the flow of mixed gas from the mixed gas premixing chamber to the mixed gas reaction chamber for reaction.In this process, the mixed gas flows through the equal division orifice plate 4, which can divide the mixed gas into several slender gas streams, thereby effectively improving the uniformity of the mixed gas entering the mixed gas reaction chamber.Further, when the mixed gas reacts in the mixed gas reaction chamber, the high-temperature steam flowing through the heat transfer medium coil 602 can heat the mixed gas reacting in the mixed gas reaction chamber, thereby effectively improving the reaction efficiency between the components of the mixed gas, and the mixed gas after reaction leaves the tank body through the mixed gas outlet 3.

[0033] The middle part of the tank body 1 is provided with a nitrogen inlet 7, and the nitrogen inlet 7 is fixedly connected with a nitrogen pipeline, and an electromagnetic valve is arranged on the nitrogen pipeline.Because nitrogen is an inert gas, this design can introduce nitrogen into the inside of the tank body 1 when a safety hazard occurs in the tank body 1, thereby avoiding the occurrence of safety accidents.

[0034] The middle part of the tank body 1 is provided with a thermometer port 8, and the temperature monitoring part installed in the thermometer port 8 can transmit the temperature data inside the tank body 1 to the control chip (not shown in the figure) in real time, and the control chip can adjust the flow of the medium inside the mixed gas heat transfer assembly 6 according to the required temperature of the mixed gas operation in real time (specifically by controlling the electromagnetic valve on the steam pipeline to control the steam flow), so as to keep the temperature inside the tank body 1 at a stable level, improve the stability of the mixed gas operation, and improve the stability of the operation. And when the temperature inside the tank body 1 exceeds the upper limit value set by the control chip, the control chip controls the nitrogen inlet 8 to introduce nitrogen into the tank body 1, and since nitrogen is an inert gas, it can effectively avoid further expansion of the safety accident.

[0035] The mixed gas inlet 2 extends to the inside of the tank body 1 at one end, and the end located in the tank body 1 is provided with a hollow and surface-opening several through holes of the equal division ball 9, which is used to divide the mixed gas into small air flow when the mixed gas enters the mixed gas premixing chamber.

[0036] The diameter of the through hole on the equal division ball 9 is smaller than that of the through hole on the equal division hole plate 4. In this way, the flow rate of the mixed gas flowing through the equal division hole plate 4 can be effectively avoided. The flow rate is slowed down due to the obstruction.

[0037] The bottom of the tank body 1 is provided with a supporting leg 10 for supporting the tank body 1.

[0038] The lower part of the side wall of the tank body 1 is provided with an inspection hole 11, which facilitates the workers to enter the inside of the tank body 1 when the inside of the tank body 1 is inspected.

[0039] The above-mentioned is only the optional embodiment of the present application, and is not limited to the patent range of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields under the inventive concept of the present application. It is included in the patent protection range of the present application.

Claims

1. A gas-phase reaction apparatus for chemical production, characterized in that, include: The tank (1) has a mixed gas inlet (2) on the lower part of its side wall and a mixed gas outlet (3) on the upper part of its side wall; A uniformly distributed perforated plate (4) is installed inside the tank (1) to divide the tank (1) into two cavities, the lower one named the mixed gas premixing chamber and the upper one named the mixed gas reaction chamber. The mixed gas acceleration component (5) includes a drive motor (501) and a fan blade (502); the drive motor (501) is located at the center of the bottom surface of the tank (1), and the drive end of the drive motor (501) penetrates the bottom surface of the tank (1) and enters the interior of the tank (1) before being connected to the fan blade (502). The mixed gas heat transfer assembly (6) includes a heat transfer medium inlet (601) installed on the top of the tank (1), a heat transfer medium coil (602) extending from the top of the tank (1) into the interior of the tank (1), and a heat transfer medium outlet (603) disposed in the lower part of the side wall of the tank (1).

2. The gas-phase reaction apparatus for chemical production according to claim 1, characterized in that: A nitrogen inlet (7) is provided in the middle of the tank (1).

3. The gas-phase reaction apparatus for chemical production according to claim 1, characterized in that: A thermometer port (8) is provided in the middle of the tank (1).

4. A gas-phase reaction apparatus for chemical production according to claim 1, characterized in that: One end of the mixed gas inlet (2) extends into the interior of the tank (1), and the end located inside the tank (1) is provided with a hollow, equally distributed sphere (9) with several through holes on its surface.

5. A gas-phase reaction apparatus for chemical production according to claim 4, characterized in that: The diameter of the through hole on the equal-dividing sphere (9) is smaller than the diameter of the through hole on the equal-dividing perforated plate (4).

6. A gas-phase reaction apparatus for chemical production according to claim 1, characterized in that: The bottom of the tank (1) is provided with support legs (10).

7. A gas-phase reaction apparatus for chemical production according to claim 1, characterized in that: The lower part of the side wall of the tank (1) is provided with an inspection hole (11).

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