A distillation tower equipment

Abstract

The invention relates to a distillation tower device, comprising a cylindrical distillation tower body, the top and bottom of the distillation tower body are sealed by a head, the top head of the distillation tower body is connected to a material inlet pipe, the bottom head of the distillation tower body is connected to a material outlet, a plurality of longitudinally arranged material evaporation components are arranged in the distillation tower body, the material evaporation components comprise a material evaporation annular plate a and a material evaporation annular plate b arranged in the distillation tower body, the edges of the material evaporation annular plate a and the material evaporation annular plate b are provided with through holes, the through hole position of the edge of the material evaporation annular plate a is provided with an annular baffle with two ends opened, the inner diameter edge of the material evaporation annular plate b is provided with an annular baffle with two ends opened; the outer diameter surface of the material evaporation annular plate a is fixedly connected to the inner wall of the distillation tower body, an annular gap is left between the edge through hole of the material evaporation annular plate a and the circumferential surface of the annular baffle, the production is continuous, the time for the material to pass through the heating surface is short, and the product quality is good.

Description

Technical Field

[0001] The present invention relates to a device for distilling, purifying and separating different components of edible oil products, oil chemical products, petrochemical products, other chemical products and plant extracts, in particular to a distillation tower device. Background Art

[0002] The distillation tower is a chemical equipment made of rare metal titanium and its alloy materials. It has the characteristics of high strength, high toughness, high temperature resistance, corrosion resistance, and light specific gravity. Therefore, it is widely used in chemical, petrochemical, metallurgical, light industry, textile, alkali, pharmaceutical, pesticide, electroplating, electronics and other fields. There are many types of tower equipment. The distillation tower is a tower-type gas-liquid contact device for distillation. There are two main types of plate towers and packed towers. The comparison between plate towers and packed towers is a complex issue, involving many factors. When selecting, the material properties, operating conditions, performance of tower equipment, and manufacturing, installation, operation and maintenance of tower equipment should be considered. The principle of distillation in a distillation tower is to partially vaporize the liquid mixture and use the different volatility of each component to achieve separation. The bottom of the tower is liquid, and the gas is distilled from the top of the tower, and the gas is condensed and recovered.

[0003] The main function of a distillation tower is to separate mixed liquids by utilizing the principle that different liquids have different volatilities (boiling points) under different conditions, such as different temperatures, to separate the liquids, thereby achieving a purification effect.

[0004] All existing distillation towers heat materials outside the tower, and often require a reboiler for forced circulation and reheating outside the tower, which fully demonstrates that the thermal energy utilization rate of the distillation tower is not high. In addition, the output is large and the material is large, the material cannot form a film well and cannot evaporate well, and steam stripping or other forms of stirring are required, which increases energy consumption and affects the vacuum. Summary of the invention

[0005] The purpose of the present invention is to solve the defects of the prior art and provide a distillation tower device.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A distillation tower device comprises a cylindrical distillation tower body, the top and bottom of the distillation tower body are sealed by a head, the top head of the distillation tower body is connected to a material inlet pipe, and the bottom head of the distillation tower body is connected to a material outlet, a plurality of longitudinally arranged material evaporation components are arranged in the distillation tower body, the material evaporation components comprise a material evaporation annular plate a and a material evaporation annular plate b arranged in the distillation tower body, through holes are arranged at the edges of the material evaporation annular plate a and the material evaporation annular plate b, an annular baffle with openings at both ends is arranged at the through hole position of the edge of the material evaporation annular plate a, and an annular baffle with openings at both ends is arranged at the inner diameter edge of the material evaporation annular plate b;

[0008] The outer diameter surface of the material evaporation annular plate a is fixedly connected to the inner wall of the distillation tower body, and an annular gap is left between the edge through hole of the material evaporation annular plate a and the circumferential surface of the annular baffle, and the annular gap forms a material flow channel;

[0009] The inner diameter edge of the material evaporation annular plate b is fixedly connected to the annular baffle, and an annular gap is left between the outer diameter surface of the material evaporation annular plate b and the inner wall of the distillation tower body, and the annular gap forms a material flow channel.

[0010] In the above-mentioned distillation tower equipment, the outer diameter of the material evaporation annular plate b is smaller than the outer diameter of the material evaporation annular plate a, and the material evaporation annular plate a and the material evaporation annular plate b are alternately arranged in the distillation tower body.

[0011] In the above-mentioned distillation tower equipment, the front end of the material inlet pipe is connected to the material heat exchanger, and the rear end is connected to the annular tube material distributor, and the bottom of the annular tube material distributor is provided with a plurality of small holes.

[0012] In the above-mentioned distillation tower equipment, the top cover is connected to a vacuum tube, and one end of the vacuum tube is connected to the inner cavity of the distillation tower body.

[0013] In the above-mentioned distillation tower equipment, a material auxiliary heating device is provided in the distillation tower body, and the material auxiliary heating device is arranged on the upper surface or the back surface of the material evaporation circular ring plate a and the material evaporation circular ring plate b.

[0014] In the above-mentioned distillation tower equipment, the material auxiliary heating device is a heating tube arranged on the material evaporation ring plate a and the material evaporation ring plate b, one end of the heating tube is provided with a heating medium inlet, and the other end is provided with a heating medium outlet, forming a heating system.

[0015] In the above-mentioned distillation tower equipment, the material auxiliary heating device is an electric heating wire or electric heating rod arranged in a ring shape and arranged on the material evaporation ring plate a and the material evaporation ring plate b.

[0016] In the above-mentioned distillation tower equipment, a packing body or a tower plate is provided on the top of the distillation tower body, and a vacuum tube is connected to the top of the packing body or the tower plate.

[0017] The beneficial effects of the present invention are as follows: the equipment has good sealing effect, low equipment manufacturing and operation and maintenance costs, it does not require a stirring device, the material automatically forms a thin film from top to bottom along the internal material evaporation component, the production is continuous, the time for the material to pass through the heating surface is short, the product quality is good, and at the same time, it saves power resources, has high thermal energy utilization rate, and has low production costs. If it can be promoted and applied in related industries, it will be a strong guarantee for related industries to improve equipment and process technology. The internal structure of the present invention is compact, and the maximum evaporation area is achieved with the smallest volume. The manufacturing cost of several distillation equipment originally designed by the author can be further reduced. It is especially suitable for the manufacturing and processing of large and extra-large distillation equipment and suitable for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic vertical cross-sectional view of a distillation tower according to Example 1 of the present invention.

[0019] Figure 2 for Figure 1 Schematic cross-sectional view.

[0020] Figure 3 This is a vertical cross-sectional schematic diagram of a distillation tower device with an auxiliary heating device on a circular ring plate according to the present invention.

[0021] Figure 4 for Figure 3 Schematic cross-sectional view of .

[0022] Figure 5 This is a schematic vertical cross-sectional view of a distillation tower device in which the auxiliary heating device of the present invention is located below the circular ring plate.

[0023] Figure 6 for Figure 5 Schematic cross-sectional view of .

[0024] Figure 7 It is a schematic vertical cross-sectional view of a distillation tower apparatus with packing.

[0025] Figure 8 for Figure 7 Schematic cross-sectional view of .

[0026] Fig. 9 for Figure 1 Magnified view of area A in .

[0027] Fig.10 for Figure 1 Magnified view of area B in .

[0028] Fig.11 It is a top view schematic diagram of the combination of the material evaporation circular plate a and the circular baffle.

[0029] Fig.12 It is a top view schematic diagram of the combination of the material evaporation annular plate b and the distillation tower body. DETAILED DESCRIPTION

[0030] like Figures 1 to 12 As shown, a distillation tower device comprises a cylindrical distillation tower body 3, the top and bottom of the distillation tower body 3 are sealed by a head, the top head of the distillation tower body is connected to a material inlet pipe 1, the bottom head of the distillation tower body 3 is connected to a material outlet 2, a plurality of longitudinally arranged material evaporation components are arranged in the distillation tower body 3, the material evaporation components comprise a material evaporation annular plate a and a material evaporation annular plate b arranged in the distillation tower body 3, the edges of the material evaporation annular plate a and the material evaporation annular plate b are provided with through holes, a circular baffle 5 with openings at both ends is provided at the through hole position of the edge of the material evaporation annular plate a, and a circular baffle 5 with openings at both ends is provided at the inner diameter edge of the material evaporation annular plate b;

[0031] The outer diameter surface of the material evaporation annular plate a is fixedly connected to the inner wall of the distillation tower body 3, and an annular gap 10 is left between the edge through hole of the material evaporation annular plate a and the circumferential surface of the annular baffle 5, and the annular gap forms a material flow channel. The annular baffle 5 is fixedly connected to the edge of the material evaporation annular plate a through a connecting rod (rod, steel bar) 12;

[0032] The inner diameter edge of the material evaporation annular plate b is fixedly connected to the annular baffle 5, and an annular gap 11 is left between the outer diameter surface of the material evaporation annular plate b and the inner wall of the distillation tower body 3. The annular gap 11 forms a material flow channel, and the material evaporation annular plate b is fixedly connected to the inner wall of the distillation tower body 3 through a connecting rod (rod, steel bar) 12.

[0033] The outer diameter of the material evaporation annular plate b is smaller than the outer diameter of the material evaporation annular plate a, and the material evaporation annular plate a and the material evaporation annular plate b are alternately arranged in the distillation tower body 3 .

[0034] The front end of the material inlet pipe 1 is connected to the material heat exchanger, and the rear end is connected to the annular tube material distributor. There are several small holes at the bottom of the annular tube material distributor. The material supplied by the material inlet pipe 1 is first heated by the material heat exchanger and then evenly distributed by the annular tube material distributor before entering the distillation tower body 3. Among them, the material heat exchanger and the annular tube material distributor are existing equipment.

[0035] Furthermore, the top cover is connected to a vacuum tube 4 , and one end of the vacuum tube 4 is connected to the inner cavity of the distillation tower body 3 .

[0036] The following is further described in conjunction with specific embodiments:

[0037] Example 1

[0038] Take corn oil distillation deacidification as an example. Figure 1 Figure 2As shown, the corn oil has been heated to 260 degrees by the material heat exchanger outside the distillation tower, and enters the distillation tower body 3 of the distillation tower from the material inlet pipe 1. The corn oil first flows on the annular plate a, flows downward along the inner edge annular gap 10 of the annular plate a, and naturally flows into a thin film. Under the action of the annular baffle 5, it flows to the surface of the annular plate b through the annular gap 10, and a part of the low-boiling fatty acid evaporates first; then it continues to flow downward along the outer edge annular gap 11 of the annular plate b, and the low-boiling fatty acid continues to evaporate. This evaporation process is repeated many times to evaporate the free fatty acid. The annular baffle 5 in the distillation tower body 3 can keep the bottom cavity and the top cavity of the distillation tower body 3 connected, and the evaporated fatty acid gas in the distillation tower body 3 can rise to the top of the distillation tower body 3. The fatty acid gas is extracted by the vacuum tube 4 to the condenser outside the distillation equipment for condensation and recovery. The remaining high-boiling corn oil is collected at the bottom and collected and utilized through the material outlet 2.

[0039] Example 2

[0040] The difference between the present invention and Example 1 is that a material auxiliary heating device is provided in the distillation tower body 3, and the material auxiliary heating device is arranged on the upper surface or the back surface of the material evaporation annular plate a and the material evaporation annular plate b. In this embodiment, the material auxiliary heating device includes two types, one material auxiliary heating device is a heating tube arranged on the material evaporation annular plate a and the material evaporation annular plate b, one end of the heating tube is provided with a heating medium inlet 6, and the other end is provided with a heating medium outlet 7, forming a heating system, and the other material auxiliary heating device is an electric heating wire or electric heating rod arranged in a ring on the material evaporation annular plate a and the material evaporation annular plate b. Since the evaporation of the fatty acid material takes away a lot of energy, it is necessary to give the material auxiliary heating again;

[0041] Take the distillation and deacidification of sunflower oil as an example. Figure 3 Figure 4 As shown, the sunflower oil has been heated to 230 degrees by a heat exchanger outside the distillation tower, enters the annular plate a inside the distillation tower from the material inlet pipe 1, flows downward along the inner edge annular gap 10 of the annular plate a, and naturally flows into a thin film. Under the action of the annular plate baffle 5, it flows through the annular gap 10 to the surface of the annular plate b, and a part of the low-boiling fatty acids evaporates first. The sunflower oil is continuously heated by the material auxiliary heating device to be kept above the boiling point of the fatty acids; then it continues to flow downward along the outer edge annular gap 11 of the annular plate b, and the low-boiling fatty acids continue to evaporate. This evaporation process is repeated many times to evaporate the free fatty acids. The fatty acids are all extracted by the vacuum tube 4 to the condenser outside the distillation equipment for condensation and recovery, and the remaining high-boiling sunflower oil is collected at the bottom and collected and utilized through the material outlet 2.

[0042] Example 3

[0043] Take palm oil distillation deacidification as an example. Figure 5 Figure 6 As shown, palm oil has been heated to 200 degrees by a heat exchanger outside the distillation tower, enters the annular plate a inside the distillation tower from the material inlet pipe 1, flows downward along the inner edge annular gap 10 of the annular plate a, and naturally flows into a thin film. Under the action of the annular baffle 5, it flows through the annular gap 10 to the surface of the annular plate b, and a part of the low-boiling point fatty acids evaporate first, and the material auxiliary heating device continues to heat the palm oil to keep it above the boiling point of the fatty acids; then it continues to flow downward along the outer edge annular gap 11 of the annular plate b, and the low-boiling point fatty acids continue to evaporate. This evaporation process is repeated many times to evaporate the free fatty acids. The fatty acids are extracted by the vacuum tube 4 to the condenser outside the distillation equipment for condensation and recovery, and the remaining high-boiling point palm oil is collected at the bottom and collected and utilized through the material outlet 2.

[0044] Example 4

[0045] The difference between this embodiment and embodiment 1 is that a packing body 8 or a tower plate is provided on the top of the distillation tower body, and the vacuum tube 4 is connected to the top of the packing body 8 or the tower plate.

[0046] Taking glycerol distillation and purification as an example, Figure 7 Figure 8 As shown, glycerol has been heated to 160-200 degrees by a heat exchanger outside the distillation tower, and enters the annular plate a inside the distillation tower from the material inlet pipe 1, flows down along the inner edge of the annular gap 10 of the annular plate a, and flows naturally into a thin film. Under the action of the annular baffle 5, it flows to the surface of the annular plate b through the annular gap 10, and a part of the glycerol evaporates first; because the evaporation of the material takes away a lot of energy, it is necessary to give the material auxiliary heating to ensure that the material reaches the evaporation temperature on the entire annular plate evaporation surface. The low-boiling point material on the annular plate evaporates first, and the vapor of the evaporated material encounters the filler body 8. Affected by the resistance and temperature of the filler, the higher the height of the filler, the higher the purity of the material. This meets the needs and requirements of enterprises that need to produce a content (purity) of 95%, 98%, 99%, or even 99.5%, 99.9%. It is extracted from the vacuum tube 4 to the condenser outside the distillation equipment for condensation and recovery, and the remaining high-boiling point substances are finally collected at the bottom and collected and utilized through the material outlet 2.

[0047] The equipment has good sealing effect, low equipment manufacturing and operation and maintenance costs, does not require a stirring device, and the material automatically forms a film from top to bottom along the internal material evaporation component, the production is continuous, the time for the material to pass through the heating surface is short, the product quality is good, and at the same time it saves power resources, has high thermal energy utilization, and has low production costs. If it can be promoted and applied in related industries, it will be a strong guarantee for related industries to improve equipment and process technology. The internal structure of the present invention is compact, and the maximum evaporation area is achieved with the smallest volume. The manufacturing cost of several distillation equipment originally designed by the author can be further reduced. It is especially suitable for the manufacturing and processing of large and extra-large distillation equipment and suitable for large-scale production.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A distillation tower device, comprising a cylindrical distillation tower body, the top and bottom of the distillation tower body are sealed by a head, the top head of the distillation tower body is connected to a material inlet pipe, and the bottom head of the distillation tower body is connected to a material outlet, characterized in that: The distillation tower body is provided with a plurality of longitudinally arranged material evaporation components, the material evaporation components include a material evaporation annular plate a and a material evaporation annular plate b arranged in the distillation tower body, the edges of the material evaporation annular plate a and the material evaporation annular plate b are provided with through holes, the through hole position of the edge of the material evaporation annular plate a is provided with an annular baffle with openings at both ends, and the inner diameter edge of the material evaporation annular plate b is provided with an annular baffle with openings at both ends; The outer diameter surface of the material evaporation annular plate a is fixedly connected to the inner wall of the distillation tower body, and an annular gap is left between the edge through hole of the material evaporation annular plate a and the circumferential surface of the annular baffle, and the annular gap forms a material flow channel; The inner diameter edge of the material evaporation annular plate b is fixedly connected to the annular baffle, and an annular gap is left between the outer diameter surface of the material evaporation annular plate b and the inner wall of the distillation tower body, and the annular gap forms a material flow channel; The outer diameter of the material evaporation annular plate b is smaller than the outer diameter of the material evaporation annular plate a, and the material evaporation annular plate a and the material evaporation annular plate b are alternately arranged in the distillation tower body; The front end of the material inlet pipe is connected to the material heat exchanger, and the rear end is connected to the annular tube material distributor, and the bottom of the annular tube material distributor has a plurality of small holes; The top cover is connected to a vacuum tube, and one end of the vacuum tube is connected to the inner cavity of the distillation tower body.

2. A distillation tower device according to claim 1, characterized in that: The distillation tower body is provided with a material auxiliary heating device, which is arranged on the upper surface or the back surface of the material evaporation circular ring plate a and the material evaporation circular ring plate b.

3. A distillation tower device according to claim 2, characterized in that: The material auxiliary heating device is a heating tube arranged on the material evaporation annular plate a and the material evaporation annular plate b. One end of the heating tube is provided with a heating medium inlet and the other end is provided with a heating medium outlet to form a heating system.

4. A distillation tower device according to claim 2, characterized in that: The material auxiliary heating device is an electric heating wire or electric heating rod arranged in a ring shape and arranged on the material evaporation ring plate a and the material evaporation ring plate b.

5. A distillation tower device according to claim 2, characterized in that: The top of the distillation tower body is provided with a packing body or a tower plate, and the vacuum tube is connected to the top of the packing body or the tower plate.

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