Acrolein dehydration device

Abstract

The utility model discloses an acrolein dehydration device, relates to the technical field of chemical equipment, and can solve the problem that the existing acrolein dehydration device is high in energy consumption but not high in dehydration efficiency. The acrolein dehydration device provided by the embodiment of the utility model comprises a dehydration box body and further comprises a plurality of heat exchange plates which are obliquely arranged, one end of each heat exchange plate is a fixed end fixed on the side wall of the dehydration box body, and the other end of each heat exchange plate is a free end of a horizontal fixed end; the multiple heat exchange plates are vertically distributed up and down and arranged on the two opposite side walls of the dehydration box body in a staggered mode, and in every two adjacent heat exchange plates, the free end of the heat exchange plate at the higher position is higher than the fixed end of the heat exchange plate at the lower position; and the plurality of staggered heat exchange plates form a bent dehydration channel for acrolein dehydration.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, and particularly relates to an acrolein dehydration device. Background Art

[0002] Acrolein is a colorless, strongly pungent-smelling, volatile and toxic liquid, which can be dissolved in a variety of organic solvents at room temperature and is widely used in the chemical industry.

[0003] In the production process of acrolein, it is necessary to carry out dehydration treatment to improve various indexes such as purity and chemical stability. At present, the dehydration treatment device of acrolein generally uses an extractive distillation valve to dehydrate acrolein, and is assisted by a stirring mechanism to achieve rapid and stable dehydration treatment. Reference patent number: CN202023026650.3, the utility model patent with the patent name of a kind of acrolein absorption tower.

[0004] For the existing stirring and heating type dehydration technical route of acrolein, the contact area between its heat exchange structure and acrolein is small. Therefore, it is necessary to drive the motor to continuously stir the dehydrated material inside, so that acrolein at each position contacts with the heat exchange structure for heat exchange to improve the dehydration efficiency. However, for the structure of the existing dehydration device, the heat exchange structure is small, and the driving motor needs to run continuously, which not only has high energy consumption, but also the dehydration efficiency is not ideal.

[0005] Based on the above background, the inventor designed an acrolein dehydration device, which can solve at least one of the above problems. Thus, this application is proposed. Summary of the Invention

[0006] The purpose of this application is to provide an acrolein dehydration device, which is used to solve the problem that the existing acrolein dehydration device has high energy consumption but low dehydration efficiency.

[0007] To solve the above technical problems, the utility model adopts the following solutions:

[0008] This application provides an acrolein dehydration device, including a dehydration tank body, and further including:

[0009] Multiple inclined heat exchange plates, one end of the heat exchange plate is a fixed end fixed on the side wall of the dehydration tank body, and the other end is a free end with a fixed horizontal height of the fixed end;

[0010] Multiple heat exchange plates are vertically distributed up and down and are staggered on the opposite side walls of the dehydration tank body, and among two adjacent heat exchange plates, the free end of the heat exchange plate with a higher position is higher than the fixed end of the heat exchange plate with a lower position;

[0011] Multiple staggered heat exchange plates form a bent dehydration channel for acrolein dehydration.

[0012] Optionally, the included angle between the heat exchange plate and the horizontal plane ranges from 3° to 20°.

[0013] Optionally, for multiple heat exchange plates arranged vertically from top to bottom, the included angle between each heat exchange plate and the horizontal plane gradually increases.

[0014] Optionally, a number of wavy structures for reducing the flow rate are provided on one side of the heat exchange plate located above.

[0015] Optionally, both sides of the heat exchange plate along the flow direction of acrolein are respectively fixed on the side walls of the dehydration tank body, or an anti-overflow border for preventing acrolein overflow is provided.

[0016] Optionally, it further includes a heating circuit and an electric heating structure arranged in the heat exchange plate, and the electric heating structure is electrically connected to the heating circuit.

[0017] Optionally, the electric heating structure is a resistance heating wire or a resistance heating tube in an S shape.

[0018] Optionally, a feed buffer tank for receiving acrolein and buffering is further provided at the top of the dehydration tank body, and a discharge slit located above the heat exchange plate is provided at the bottom of the feed buffer tank.

[0019] Optionally, light component discharge ports are distributed on the side walls of the dehydration tank body above the heat exchange plates;

[0020] It further includes a confluence pipe structure communicated with all the light component discharge ports;

[0021] A heavy component discharge port is further provided at the bottom of the dehydration tank body.

[0022] Advantages of the present utility model:

[0023] An acrolein dehydration device of the present application includes a dehydration tank body, and further includes:

[0024] Multiple inclined heat exchange plates, one end of the heat exchange plate is a fixed end fixed on the side wall of the dehydration tank body, and the other end is a free end with a fixed horizontal height;

[0025] Multiple heat exchange plates are arranged vertically up and down and staggered on two opposite side walls of the dehydration tank body, and among two adjacent heat exchange plates, the free end of the heat exchange plate at a higher position is higher than the fixed end of the heat exchange plate at a lower position;

[0026] Multiple staggered heat exchange plates form a bent dehydration channel for acrolein dehydration.

[0027] The design concept is that by arranging multiple heat exchange plates staggered on two opposite side walls of the dehydration tank body and all inclined, a bent dehydration channel for acrolein dehydration can be formed by the multiple heat exchange plates. Utilizing the self-gravity and certain viscosity characteristics of acrolein, acrolein can slowly flow on the heat exchange plates and directly exchange heat and distill with the heat exchange plates, thus solving the problems in the prior art that a driving motor needs to continuously operate to make acrolein at each position fully exchange heat with the heat exchange structure as much as possible, but still with poor dehydration efficiency and huge energy consumption. Brief Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of an embodiment of the present application.

[0029] Figure 2 It is a schematic cross-sectional structural diagram of the heat exchange plate in an embodiment of the present application.

[0030] Figure 3 It is Figure 2 The cross-sectional structural diagram of A-A in

[0031] Description of the reference numerals: 1 - dehydration tank body, 101 - light component discharge port, 12 - heavy component discharge port, 13 - material passing gap, 2 - feed buffer tank, 21 - discharge slit, 3 - heat exchange plate, 301 - wavy structure, 31 - electric heating structure, 32 - anti-overflow border, 4 - collecting pipe structure, 5 - heating circuit. Detailed Embodiments

[0032] The following combines embodiments and the drawings to further elaborate on the present utility model in detail, but the implementation manners of the present utility model are not limited thereto.

[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0034] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", "linked" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0036] As Figures 1 to 3 shown, this embodiment provides an acrolein dehydration device, including a dehydration tank body 1, and further including:

[0037] Multiple heat exchange plates 3 arranged obliquely, one end of the heat exchange plate 3 is a fixed end fixed on the side wall of the dehydration tank body 1, and the other end is a free end with a fixed horizontal height of the fixed end;

[0038] Multiple heat exchange plates 3 are vertically distributed up and down and are staggered on the opposite side walls of the dehydration tank body 1, and among two adjacent heat exchange plates 3, the free end of the heat exchange plate 3 with a higher position is higher than the fixed end of the heat exchange plate 3 with a lower position;

[0039] Multiple staggered heat exchange plates 3 form a bent dehydration channel for acrolein dehydration.

[0040] In this embodiment, by arranging multiple heat exchange plates 3 that are staggered on the opposite side walls of the dehydration tank body 1 and are all arranged obliquely, multiple heat exchange plates 3 form a bent dehydration channel for acrolein dehydration. Utilizing the self-gravity and certain viscosity characteristics of acrolein, acrolein can slowly flow on the heat exchange plates 3 and directly exchange heat and distill with the heat exchange plates 3, which solves the problems in the prior art that a driving motor needs to continuously operate to make acrolein at each position fully exchange heat with the heat exchange structure as much as possible, but the dehydration efficiency is still not good and the energy consumption is huge.

[0041] Specifically, in this embodiment, the included angle range between the heat exchange plate 3 and the horizontal plane is: 3° to 20°. In this embodiment, the included angle between the heat exchange plate 3 and the horizontal plane is 5°, ensuring a moderate flow rate. Technicians can set it to angles such as 5°, 6°, 7°, 8°, etc. as needed, which will not be elaborated here.

[0042] Specifically, in this embodiment, the included angles between the multiple heat exchange plates 3 distributed vertically from top to bottom and the horizontal plane gradually increase, so as to maintain the flow rate of the remaining materials as much as possible after the light components volatilize and avoid accumulation.

[0043] Specifically, in this embodiment, a number of wavy structures 301 for reducing the flow rate are provided on one side of the heat exchange plate 3 located above, to avoid insufficient dehydration. Those skilled in the art can also set other structures that can reduce the flow, such as setting S-shaped channels on the heat exchange plate 3, etc., which will not be elaborated here.

[0044] Optionally, both sides of the heat exchange plate 3 along the flow direction of acrolein are respectively fixed on the side walls of the dehydration tank body 1, or an anti-overflow border 32 for preventing acrolein overflow is provided, to avoid acrolein directly dripping to the bottom of the dehydration tank body 1 and affecting the dehydration effect of acrolein. In this embodiment, as Figure 3 shown, the side of the heat exchange plate 3 is provided with an anti-overflow border 32.

[0045] Specifically, in this embodiment, it further includes a heating circuit 5 and an electric heating structure 31 arranged in the heat exchange plate 3. The electric heating structure 31 is electrically connected to the heating circuit 5, which is convenient for heating the heat exchange plate 3.

[0046] Specifically, in this embodiment, the electric heating structure 31 is a resistance heating wire or a resistance heating tube in an S shape. The electric heating structure 31 is prior art and will not be elaborated here.

[0047] Specifically, in this embodiment, a feed buffer tank 2 for receiving acrolein and buffering is further provided at the top of the dehydration tank body 1. A discharge slit 21 located above the heat exchange plate 3 is provided at the bottom of the feed buffer tank 2, so that the flow rate of acrolein flowing onto the heat exchange plate 3 is stable, avoiding problems such as excessive or too small flow rate.

[0048] Specifically, in this embodiment, light component discharge ports 101 are evenly distributed on the side walls of the dehydration tank body 1 above the heat exchange plate 3;

[0049] It further includes a confluence pipe structure communicated with all the light component discharge ports 101;

[0050] A heavy component discharge port 12 is further provided at the bottom of the dehydration tank body 1. In this embodiment, light component discharge pipes are provided for all the light component discharge ports 101, and the light component discharge pipes are communicated with the confluence pipe structure, which is convenient for centralized treatment.

[0051] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various deformations and improvements can be made without departing from the spirit and essence of the present invention, and these deformations and improvements are also regarded as the protection scope of the present invention.

Claims

1. An acrolein dehydration device, comprising a dehydration tank body (1), characterized in that, It further includes: Multiple heat exchange plates (3) arranged obliquely, one end of the heat exchange plate (3) is a fixed end fixed to the side wall of the dehydration tank body (1), and the other end is a free end with a fixed horizontal height; Multiple heat exchange plates (3) are vertically distributed up and down and staggered on the opposite side walls of the dehydration tank body (1), and among two adjacent heat exchange plates (3), the free end of the heat exchange plate (3) with a higher position is higher than the fixed end of the heat exchange plate (3) with a lower position; Multiple staggered heat exchange plates (3) form a bent dehydration channel for acrolein dehydration.

2. The acrolein dehydration device according to claim 1, characterized in that, The included angle range between the heat exchange plate (3) and the horizontal plane is: 3° to 20°.

3. An acrolein dehydration device according to claim 1, characterized in that, The included angles between the multiple heat exchange plates (3) distributed from top to bottom in the vertical direction and the horizontal plane gradually increase.

4. The acrolein dehydration device according to claim 1, wherein On one side of the heat exchange plate (3) located above, a number of wavy structures (301) for reducing the flow rate are provided.

5. The acrolein dehydration device according to claim 1, characterized in that, Both sides of the heat exchange plate (3) along the acrolein flow direction are respectively fixed on the side walls of the dehydration tank body (1), or an anti-overflow border (32) for preventing acrolein overflow is provided.

6. An acrolein dehydration device according to claim 1, characterized in that, It further includes a heating circuit (5), and an electric heating structure (31) arranged in the heat exchange plate (3), and the electric heating structure (31) is electrically connected to the heating circuit (5).

7. An acrolein dehydration device according to claim 6, characterized in that, The electric heating structure (31) is a resistance heating wire or a resistance heating tube in an S shape.

8. The acrolein dehydration device according to claim 1, characterized in that, At the top of the dehydration tank body (1), a feed buffer tank (2) for receiving acrolein and buffering is further provided, and a discharge slit (21) located above the heat exchange plate (3) is provided at the bottom of the feed buffer tank (2).

9. The acrolein dehydration device according to claim 1, characterized in that, Above the heat exchange plate (3), light component discharge ports (101) located on the side walls of the dehydration tank body (1) are evenly distributed; It further includes a confluence pipe structure communicated with all the light component discharge ports (101); At the bottom of the dehydration tank body (1), a heavy component discharge port (12) is further provided.

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