Glyoxal spray cooling device

Abstract

The utility model discloses a glyoxal spray cooling device which comprises a barrel body which is vertically arranged, a plurality of water curtain barrels are coaxially arranged in the barrel body, an inner cavity of the barrel body is divided into a central cavity and a plurality of annular cavities by the water curtain barrels, through holes are formed in the water curtain barrels, a spray dripping assembly is arranged on the barrel body, and the spray dripping assembly is arranged in the central cavity. The spraying and dripping assembly is used for spraying water to the inner wall and the outer wall of the barrel body; the spray cooling equipment has the beneficial effects that the plurality of water curtain cylinders which are coaxially arranged are designed for mass transfer, and the mass transfer space of the spray cooling equipment can be effectively separated, so that the mass transfer path is increased, the mass transfer time is prolonged, the mass transfer is more sufficient and thorough, the consumption of spray water is small, the energy is saved, and the glyoxal cooling absorption efficiency is high.

Description

Technical field:

[0001] The utility model relates to the technical field of glyoxal production equipment, in particular to a glyoxal spray cooling device. Background technology:

[0002] The gas-phase oxidation of ethylene glycol is a traditional method for producing glyoxal. The production process involves preheating ethylene glycol, mixing it with circulating gas, and introducing it into a reaction catalyst to generate a glyoxal product. The gaseous glyoxal is then spray-cooled and absorbed by water to form a glyoxal aqueous solution. The glyoxal product is then obtained after dehydration, vacuum filtration, and other treatments. In the prior art, the general structure of a spray cooling device is a simple countercurrent contact mass transfer structure, in which the gaseous glyoxal rises in a container and countercurrently contacts the falling cooling spray water, allowing the glyoxal to be cooled and absorbed. However, spray cooling equipment with this structure generally has the following disadvantages: due to limited mass transfer space and the rapid falling speed of the spray water and the rising speed of the gaseous glyoxal, the countercurrent mass transfer time is short, the cooling and absorption efficiency is low, and a large amount of spray water is consumed, which urgently needs to be improved. Utility model content:

[0003] The utility model aims to provide a glyoxal spray cooling device to solve the technical problems of low mass transfer efficiency and large water resource consumption in the existing spray cooling device.

[0004] The present invention relates to a glyoxal spray cooling device, comprising a vertically arranged barrel body, wherein a plurality of water curtain cylinders are coaxially installed in the barrel body, wherein the water curtain cylinders divide the inner cavity of the barrel body into a central cavity and a plurality of annular cavities, through holes are opened on the water curtain cylinders, and a droplet spray assembly is installed on the barrel body, wherein the droplet spray assembly is used to spray water onto the inner wall and the outer wall of the barrel body, and an air inlet pipe and a liquid outlet pipe are installed at the bottom of the barrel body.

[0005] Furthermore, the spray drop assembly includes several water inlet ring pipes that match the position of the water curtain tube, and several pairs of spray drop tubes are evenly installed on the water inlet ring pipe along the circumferential direction. Each pair of spray drop tubes is arranged on the inner wall and outer wall of the water curtain tube, and the water inlet ring pipe is connected to the water inlet pipe.

[0006] Furthermore, the through holes on any adjacent water curtain tubes are arranged in a staggered manner.

[0007] Furthermore, the air inlet pipe is communicated with the central cavity, and the liquid outlet pipe is communicated with the outermost annular cavity.

[0008] Furthermore, the wall thickness of the water curtain tube gradually increases from top to bottom.

[0009] Furthermore, the barrel body and the water curtain tube are made of glass fiber reinforced plastics.

[0010] The beneficial effects of the utility model are as follows: the utility model designs several coaxially arranged water curtain tubes for mass transfer, which can effectively separate the mass transfer space of the spray cooling equipment, thereby improving the mass transfer path and mass transfer time, making the mass transfer more sufficient and thorough, reducing the consumption of spray water, saving energy, and achieving high glyoxal cooling and absorption efficiency. Description of the drawings:

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0014] Figure 4 for Figure 2 Section view along BB;

[0015] In the figure, there are a barrel body 1, a water curtain tube 2, a central cavity 3, an annular cavity 4, an air inlet pipe 5, a liquid outlet pipe 6, a water inlet pipe 7, a water inlet annular pipe 8, a spray and drip pipe 9, and a through hole 10. Specific implementation method:

[0016] like Figure 1 and Figure 2 As shown, a glyoxal spray cooling device includes a vertically arranged barrel body 1, in which a plurality of water curtain cylinders 2 are coaxially installed, and the water curtain cylinder 2 divides the inner cavity of the barrel body 1 into a central cavity 3 and a plurality of annular cavities 4. A through hole 10 is opened on the water curtain cylinder 2, and a droplet spray assembly is installed on the barrel body 1. The droplet spray assembly is used to spray water onto the inner and outer walls of the barrel body 1, and an air inlet pipe 5 and a liquid outlet pipe 6 are installed at the bottom of the barrel body 1.

[0017] like Figure 3 As shown, the spray drop assembly includes several water inlet ring pipes 8 that match the position of the water curtain tube 2, and several pairs of spray drop pipes 9 are evenly installed on the water inlet ring pipe 8 along the circumferential direction. Each pair of the spray drop pipes 9 is arranged on the inner wall and outer wall of the water curtain tube 2, and the water inlet ring pipe 8 is connected to the water inlet pipe 7.

[0018] In order to further increase the mass transfer path, such as Figure 2 and Figure 3 As shown, the through holes 10 on any adjacent water curtain tubes 2 are staggered so that the gaseous glyoxal takes a serpentine route, the air inlet pipe 5 is connected to the central cavity 3, and the liquid outlet pipe 6 is connected to the outermost annular cavity 4.

[0019] like Figure 2 and Figure 4As shown, the wall thickness of the water curtain tube 2 gradually increases from top to bottom, so that it has a slope, which facilitates the formation of the water curtain. The barrel body 1 and the water curtain tube 2 are made of fiberglass.

[0020] When doing specific work, such as Figures 1 to 4 As shown, gaseous glyoxal enters the central cavity 3 from the air inlet pipe 5, and then flows through multiple rings 4 in a zigzag path. During this process, cooling water passes through the water inlet pipe 7, the water inlet ring pipe 8, and the spray and drip pipe 9 in sequence, and is sprayed or dripped on the inner and outer walls of the water curtain tube 2. Since the water curtain tube 2 has a certain slope, the cooling water forms a water curtain on the inner and outer walls of the water curtain tube 2, and contacts with the gaseous glyoxal flowing in the zigzag path through mass transfer, so that the gaseous glyoxal is gradually cooled and absorbed, forming a glyoxal aqueous solution that is discharged from the liquid outlet pipe 6.

[0021] The above are only preferred examples of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A glyoxal spray cooling device, characterized in that: The invention comprises a barrel body (1) arranged vertically, a plurality of water curtain cylinders (2) being coaxially installed in the barrel body (1), the water curtain cylinders (2) dividing the inner cavity of the barrel body (1) into a central cavity (3) and a plurality of annular cavities (4), a through hole (10) being opened on the water curtain cylinder (2), a spray assembly being installed on the barrel body (1), the spray assembly being used for spraying water onto the inner wall and the outer wall of the barrel body (1), and an air inlet pipe (5) and a liquid outlet pipe (6) being installed at the bottom of the barrel body (1).

2. The glyoxal spray cooling device according to claim 1, characterized in that: The spray drop assembly comprises a plurality of water inlet ring pipes (8) that match the positions of the water curtain tube (2), and a plurality of pairs of spray drop pipes (9) are evenly distributed along the circumferential direction on the water inlet ring pipe (8), each pair of the spray drop pipes (9) being arranged on the inner wall and the outer wall of the water curtain tube (2), and the water inlet ring pipe (8) is connected to the water inlet pipe (7).

3. The glyoxal spray cooling device according to claim 1, characterized in that: The through holes (10) on any adjacent water curtain tubes (2) are arranged in a staggered manner.

4. The glyoxal spray cooling device according to claim 3, characterized in that: The air inlet pipe (5) is connected to the central cavity (3), and the liquid outlet pipe (6) is connected to the outermost annular cavity (4).

5. The glyoxal spray cooling device according to claim 1, characterized in that: The wall thickness of the water curtain tube (2) gradually increases from top to bottom.

6. The glyoxal spray cooling device according to claim 1, characterized in that: The barrel body (1) and the water curtain tube (2) are made of glass fiber reinforced plastics.

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