Dividing wall column and rectification device

Abstract

The utility model relates to the technical field of chemical separation, and provides a dividing wall column and a rectification device.The dividing wall column comprises a column body, a partition plate, a first distributor and a first liquid collection tray, the partition plate is arranged in the column body and extends in the height direction of the column body, and the top face of the partition plate and the inner top wall of the column body are arranged at intervals in the height direction of the column body; the bottom surface of the partition plate and the inner bottom wall of the tower body are arranged at intervals; in the height direction intersecting with the tower body, one side wall face of the partition plate and a part of the inner wall of the tower body define a feeding section, the other side wall face of the partition plate and the other part of the tower body define a discharging section, the first distributor is arranged in the feeding section and connected with the tower body and the partition plate, and the first liquid collecting disc is arranged in the discharging section and connected with the tower body and the partition plate. According to the invention, the problems of high energy consumption and large occupied area when silicate ester is separated in a double-tower rectification mode can be solved.

Description

Technical Field

[0001] This application relates to the field of chemical separation technology, and in particular to a partition wall column and distillation apparatus. Background Technology

[0002] In the direct synthesis of silicate esters from silicon powder, silicon powder and alcohol compounds are mixed in a reactor and reacted under predetermined conditions to produce silicate esters. After the reaction, the product is produced in gaseous form in the reactor. After condensation, the product contains alcohol, silicate esters, and high-boiling-point substances. The product is then separated by distillation to obtain high-purity silicate esters and high-purity alcohols.

[0003] In related technologies, a dual-tower distillation mode is used to separate silicates in a mixture. First, the product is fed into the first tower, and the alcohol is collected at the top of the first tower for recycling. After the silicates and high-boiling substances are collected from the bottom of the first tower, they enter the second tower. The silicates are collected at the top of the second tower, and the high-boiling substances are collected at the bottom.

[0004] However, using a dual-tower distillation method to separate silicates has the problems of high energy consumption and large footprint. Utility Model Content

[0005] This application provides a partitioned column and distillation apparatus, which can solve the problems of high energy consumption and large footprint in the separation of silicates using a dual-column distillation mode.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] In a first aspect, this application provides a partition tower, comprising:

[0008] tower body;

[0009] A baffle plate is installed inside the tower body, extending along the height direction of the tower body. Along the height direction of the tower body, the top surface of the baffle plate is spaced apart from the inner top wall of the tower body, and the bottom surface of the baffle plate is spaced apart from the inner bottom wall of the tower body. Along the height direction intersecting the tower body, one side wall of the baffle plate and a part of the inner wall of the tower body enclose a feeding section, and the other side wall of the baffle plate and another part of the inner wall of the tower body enclose a discharging section.

[0010] The first distributor is located in the feed section and is connected to the tower body and the baffle plate respectively;

[0011] The first liquid collection tray is located in the discharge section and is connected to the tower body and the baffle plate respectively.

[0012] In some embodiments, the tower body has a first liquid inlet and a first liquid outlet, which are spaced apart along the circumferential direction of the tower body;

[0013] The neighboring tower also includes:

[0014] The first pipeline is located in the tower body and is connected to the first liquid collection tray through the first liquid outlet.

[0015] The second pipeline is located in the tower body and is connected to the first distributor through the first liquid inlet;

[0016] The first heat exchanger has a first heat exchange channel and a second heat exchange channel, which are thermally connected. The first heat exchange channel is connected to one of the first pipeline and the second pipeline, and the second heat exchange channel is connected to the other of the first pipeline and the second pipeline.

[0017] In some implementations, the adjacent tower also includes:

[0018] The product buffer container is connected to the first pipeline;

[0019] The product pump is connected to the first pipeline and is located between the product buffer tank and the first heat exchanger along the arrangement direction of the first pipeline.

[0020] In some implementations, the adjacent tower also includes:

[0021] The second distributor is located in the feed section and is connected to the tower body and the baffle plate respectively. Along the height direction of the tower body, the second distributor is spaced above the first distributor.

[0022] The second liquid collection tray is located in the discharge section and is connected to the tower body and the baffle plate respectively. Along the height direction of the tower body, the second liquid collection tray is spaced above the first liquid collection tray.

[0023] In some embodiments, the tower body has a second liquid inlet and a second liquid outlet. The second liquid inlet and the second liquid outlet are spaced apart along the circumferential direction of the tower body. The second liquid outlet is positioned higher than the second liquid inlet along the height direction of the tower body. The second liquid inlet is spaced above the first liquid inlet along the height direction of the tower body. The second liquid outlet is spaced above the first liquid outlet along the height direction of the tower body.

[0024] The neighboring tower also includes:

[0025] The third pipeline has one end connected to the second liquid collection tray through the second liquid outlet, and the other end connected to the second distributor through the second liquid inlet.

[0026] The first regulating valve is located on the third pipeline.

[0027] In some embodiments, the tower body has a first opening and a second opening, which are spaced apart along the circumferential direction of the tower body, and the second opening is higher than the first opening along the height direction of the tower body; the first opening is spaced above the second liquid inlet along the height direction of the tower body; and the second opening is spaced above the second liquid outlet along the height direction of the tower body.

[0028] The neighboring tower also includes:

[0029] A first connecting member is provided in the tower body. One end of the first connecting member is connected to the inner cavity of the tower body through a second opening, and the other end of the first connecting member is connected to the feeding section through a first opening.

[0030] The second regulating valve is located on the first connecting member.

[0031] In some embodiments, the tower body has a third liquid inlet and a third liquid outlet, with the third liquid inlet positioned higher than the third liquid outlet along the height direction of the tower body; and the third liquid outlet is spaced above the second opening along the height direction of the tower body.

[0032] The neighboring tower also includes:

[0033] The third distributor is located in the inner cavity and is spaced above the second liquid collection tray along the height direction of the tower.

[0034] The fourth pipeline has one end connected to the inner cavity through the third inlet, and the other end connected to the third distributor through the third outlet.

[0035] Condenser, thermally connected to the third distributor;

[0036] The reflux tank is connected to the fourth pipeline;

[0037] The top reflux pump is connected to the fourth pipeline. Along the extension direction of the fourth pipeline, the top reflux pump is located at the end of the reflux tank away from the condenser.

[0038] The fifth pipeline is connected to the fourth pipeline and extends along the direction of the fourth pipeline. The fifth pipeline is located between the top reflux pump and the third inlet.

[0039] In some embodiments, the tower body has a third opening and a fourth opening, which are spaced apart along the circumferential direction of the tower body, and the fourth opening is positioned higher than the third opening along the height direction of the tower body; the third opening is spaced below the first liquid inlet along the height direction of the tower body; and the fourth opening is spaced below the first liquid outlet along the height direction of the tower body.

[0040] The neighboring tower also includes:

[0041] The second connecting piece has one end connected to the discharge section through the fourth opening, and the other end connected to the feed section through the third opening.

[0042] The third regulating valve is located on the second connecting member.

[0043] In some embodiments, the tower body has a fourth liquid inlet and a fourth liquid outlet, with the fourth liquid outlet spaced below the fourth liquid inlet along the height direction of the tower body; and the fourth liquid inlet spaced below the third opening along the height direction of the tower body.

[0044] The neighboring tower also includes:

[0045] The sixth pipeline has one end connected to the inner cavity of the tower body through the fourth liquid inlet, and the other end connected to the inner cavity through the fourth liquid outlet.

[0046] The second heat exchanger is connected to the sixth pipeline;

[0047] The seventh pipeline is connected to the sixth pipeline and is located between the fourth liquid outlet and the second heat exchanger along the extension direction of the sixth pipeline.

[0048] The tower bottom pump is connected to the seventh pipeline.

[0049] Secondly, this application provides a distillation apparatus, including a partition column.

[0050] This partitioned column structure, by incorporating a first distributor, allows the products to be separated to be conveyed into the interior of the column. Specifically, the light component (alcohol) of the product can move through the feed section towards the gap between the top surface of the partition and the inner top wall of the column. The intermediate component (silica esters) and the heavy component (high-boiling compounds) of the product can move through the feed section towards the gap between the bottom surface of the partition and the inner bottom wall of the column. The partition ensures that the silicates and high-boiling compounds within the gap between the bottom surface of the partition and the inner bottom wall of the column are properly separated. The abrupt change in cross-section occurs when passing through the partition. Because the cross-sectional area of ​​the inner cavity of the column is larger than that of the second chamber, the flow velocity of the products to be separated entering the second chamber increases, thus enabling the separation of silicates and high-boiling-point substances. A first collecting tray collects the silicates. This allows alcohols in the products to be separated to be distributed in the gap between the top surface of the partition and the inner top wall of the column, while silicates are distributed at the first collecting tray, and high-boiling-point substances are distributed in the gap between the bottom surface of the partition and the inner bottom wall of the column. Compared to the traditional two-tower distillation method for separating silicates, using a single partition column reduces energy consumption and floor space requirements during the silicate separation process.

[0051] Therefore, the partition tower provided in the embodiments of this application can solve the problems of high energy consumption and large footprint in the separation of silicates using the dual-tower distillation mode. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 This is a schematic diagram of the main structure of the partition tower provided in an embodiment of this application.

[0054] Explanation of reference numerals in the attached figures:

[0055] 100 - Tower body; 101 - First liquid inlet; 102 - First liquid outlet; 103 - Second liquid inlet; 104 - Second liquid outlet; 105 - First opening; 106 - Second opening; 107 - Third liquid inlet; 108 - Third liquid outlet; 109 - Third opening; 110 - Fourth opening; 111 - Fourth liquid inlet; 112 - Fourth liquid outlet;

[0056] 200 - Baffle; 201 - Feeding section; 202 - Discharge section;

[0057] 300-First distributor; 301-First collection tray; 302-First pipeline; 303-Second pipeline; 304-First heat exchanger; 305-Product buffer tank; 306-Product pump;

[0058] 400 - Second distributor; 401 - Second collection tray;

[0059] 500 - Third pipeline; 501 - First regulating valve;

[0060] 600 - First connecting element; 601 - Second regulating valve;

[0061] 700 - Third distributor; 701 - Fourth pipeline; 702 - Condenser; 703 - Reflux tank; 704 - Top reflux pump; 705 - Fifth pipeline;

[0062] 800 - Second connecting element; 801 - Third regulating valve;

[0063] 900 - Sixth pipeline; 901 - Second heat exchanger; 902 - Seventh pipeline; 903 - Boiler pump. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0065] In the existing technology, the boiling points of silicates and high-boiling substances are close, while the boiling point of alcohols is lower than that of silicates and high-boiling substances. Therefore, it is necessary to use a first column to separate alcohols and then use a second column to separate silicates. However, using a dual-column distillation mode to separate silicates has the problems of high energy consumption and large footprint.

[0066] To overcome the shortcomings of existing technologies, a first distributor is incorporated, allowing the products to be separated to be conveyed into the interior of the tower. Specifically, the light component (alcohol) in the product can move through the feed section towards the gap between the top surface of the baffle and the inner top wall of the tower. The intermediate component (silicate) and the heavy component (high-boiling-point substances) can move through the feed section towards the gap between the bottom surface of the baffle and the inner bottom wall of the tower. The baffle ensures that the silicates and high-boiling-point substances within the gap between the bottom surface of the baffle and the inner bottom wall of the tower are properly separated. A sudden change in cross-sectional area occurs when passing through the partition. Because the cross-sectional area of ​​the inner cavity of the column is larger than that of the second chamber, the flow velocity of the product to be separated entering the second chamber increases, thus enabling the separation of silicates and high-boiling-point substances. A first collecting tray is used to collect the silicates. This allows alcohols in the product to be separated to be distributed in the gap between the top surface of the partition and the inner top wall of the column, while silicates are distributed at the first collecting tray, and high-boiling-point substances are distributed in the gap between the bottom surface of the partition and the inner bottom wall of the column. Compared to the traditional two-tower distillation method for separating silicates, using a single partition column reduces energy consumption and floor space requirements during the silicate separation process.

[0067] Therefore, the partition tower provided in the embodiments of this application can solve the problems of high energy consumption and large footprint in the separation of silicates using the dual-tower distillation mode.

[0068] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0069] like Figure 1As shown, this application provides a partitioned tower, including a tower body 100, a partition plate 200, a first distributor 300, and a first collection tray 301. The partition plate 200 is disposed inside the tower body 100 and extends along the height direction of the tower body 100. Along the height direction of the tower body 100, the top surface of the partition plate 200 is spaced apart from the inner top wall of the tower body 100, and the bottom surface of the partition plate 200 is spaced apart from the inner bottom wall of the tower body 100. In the height direction of 100, one side wall of the partition 200 and a part of the inner wall of the tower body 100 enclose a feeding section 201, and the other side wall of the partition 200 and another part of the tower body 100 enclose a discharging section 202. The first distributor 300 is located in the feeding section 201 and is connected to the tower body 100 and the partition 200 respectively. The first liquid collecting tray 301 is located in the discharging section 202 and is connected to the tower body 100 and the partition 200 respectively.

[0070] The following sections provide detailed descriptions of the specific structure of the adjacent tower and its various possible implementation methods.

[0071] It should be noted that the tower body 100 can be a plate tower, a packed tower, or a plate-packed hybrid tower. There are no restrictions here, and it can be selected according to the actual use requirements.

[0072] It should be noted that the feeding section 201 and the discharging section 202 can be connected through the gap between the top surface of the partition 200 and the inner top wall of the tower body 100, and the feeding section 201 and the discharging section 202 can also be connected through the gap between the bottom surface of the partition 200 and the inner bottom wall of the tower body 100.

[0073] It should be noted that, along the radial direction of the tower body 100, the ratio of the cross-sectional area of ​​the feed section 201 to the cross-sectional area of ​​the discharge section 202 is 1:5.

[0074] It is understood that the above-described embodiments can increase the flow rate of the products to be separated entering the second chamber, thereby enabling the separation of silicates and high-boiling substances.

[0075] In one embodiment, the ratio of the cross-sectional area of ​​the feed section 201 to the cross-sectional area of ​​the discharge section 202 along the radial direction of the tower body 100 is 1:3.

[0076] It is understood that the above-described embodiments can increase the flow rate of the products to be separated entering the second chamber, thereby enabling the separation of silicates and high-boiling substances.

[0077] It should be noted that the gap between the top surface of the partition 200 and the inner top wall of the column body 100 forms a common rectification section, with an internal temperature of 60℃ to 90℃ and an internal pressure of 0.01MPaG to 0.03MPaG. The gap between the bottom surface of the partition 200 and the inner bottom wall of the column body 100 forms a common stripping section, with an internal temperature of 160℃ to 180℃. The temperature in the discharge section 202 is 130℃ to 150℃. The reflux ratio of the products to be separated in the column body 100 is 10 to 50.

[0078] It is understood that, through the above embodiments, the alcohol in the product to be separated can be distributed in the gap between the top surface of the partition 200 and the inner top wall of the tower body 100, the silicate ester in the product to be separated can be distributed at the first collection plate 301, and the high-boiling substances in the product to be separated can be distributed in the gap between the bottom surface of the partition 200 and the inner bottom wall of the tower body 100.

[0079] In one embodiment, the temperature at the gap between the top surface of the partition 200 and the inner top wall of the tower body 100 is 80°C, the pressure between the top surface of the partition 200 and the inner top wall of the tower body 100 is 0.02 MPaG, the temperature at the gap between the bottom surface of the partition 200 and the inner bottom wall of the tower body 100 is 175°C, the temperature in the discharge section 202 is 145°C, and the reflux ratio of the product to be separated in the tower body 100 is 20.

[0080] It is understood that, through the above embodiments, the alcohol in the product to be separated can be distributed in the gap between the top surface of the partition 200 and the inner top wall of the tower body 100, the silicate ester in the product to be separated can be distributed at the first collection plate 301, and the high-boiling substances in the product to be separated can be distributed in the gap between the bottom surface of the partition 200 and the inner bottom wall of the tower body 100.

[0081] The tower body 100 provided in the embodiments of this application has a first liquid inlet 101 and a first liquid outlet 102, which are spaced apart along the circumferential direction of the tower body 100. The partition tower also includes: a first pipeline 302, a second pipeline 303, and a first heat exchanger 304. The first pipeline 302 is located in the tower body 100 and is connected to the first liquid collection tray 301 through the first liquid outlet 102. The second pipeline 303 is located in the tower body 100 and is connected to the first distributor 300 through the first liquid inlet 101. The first heat exchanger 304 has a first heat exchange channel and a second heat exchange channel, which are thermally connected. The first heat exchange channel is connected to one of the first pipeline 302 and the second pipeline 303, and the second heat exchange channel is connected to the other of the first pipeline 302 and the second pipeline 303.

[0082] It is understood that, through the above implementation method, the first pipeline 302 and the second pipeline 303 can be thermally connected through the first heat exchanger 304, thereby recovering the heat energy of the silicate ester in the first pipeline 302, thereby reducing the energy consumption of the partition tower in the separation process of silicate ester, alcohol and high boiling point substances.

[0083] It should be noted that the first heat exchanger 304 can be a double-tube heat exchanger, a double-channel plate-fin heat exchanger, a spiral plate heat exchanger, or other components that can perform heat exchange. There are no restrictions here, and it can be selected according to actual usage requirements.

[0084] It should be noted that the end of the first pipeline 302 away from the tower body 100 is used for an external conveying device for receiving the separated products, and the end of the second pipeline 303 away from the tower body 100 is used for an external output device for silicate ester.

[0085] It should be noted that after heat exchange through the first heat exchanger 304, the fluid temperature of the silicate ester in the first pipeline 302 is 40°C to 60°C, and the fluid temperature of the product to be separated, which is transported to the first distributor 300 through the second pipeline 303, is 140°C to 160°C.

[0086] It is understood that, through the above implementation method, the thermal energy of the silicate ester in the first pipeline 302 can be recovered, thereby reducing the energy consumption of the adjacent tower in the separation process of silicate ester, alcohol and high-boiling substances.

[0087] Furthermore, in one embodiment, after heat exchange through the first heat exchanger 304, the fluid temperature of the silicate ester in the first pipeline 302 is 50°C, and the fluid temperature of the product to be separated, which is transported to the first distributor 300 through the second pipeline 303, is 150°C.

[0088] It is understood that, through the above implementation method, the thermal energy of the silicate ester in the first pipeline 302 can be recovered, thereby reducing the energy consumption of the adjacent tower in the separation process of silicate ester, alcohol and high-boiling substances.

[0089] It should be noted that the first heat exchange channel can be connected to the first pipeline 302 and the second heat exchange channel can be connected to the second pipeline 303, or the first heat exchange channel can be connected to the second pipeline 303 and the second heat exchange channel can be connected to the first pipeline 302. There are no restrictions on the connection method of the first heat exchange channel and the second heat exchange channel, and they can be selected according to the actual use requirements.

[0090] The partition tower provided in the embodiments of this application further includes a product buffer tank 305 and a product pump 306. The product buffer tank 305 is connected to the first pipeline 302, and the product pump 306 is connected to the first pipeline 302. Along the arrangement direction of the first pipeline 302, the product pump 306 is located between the product buffer tank 305 and the first heat exchanger 304.

[0091] It is understandable that by setting up the product buffer tank 305, the silicate can be stored, and by setting up the product pump 306, the silicate in the product buffer tank 305 can be transported to the first heat exchanger 304 under the pressure of the product pump 306.

[0092] The partition tower provided in the embodiments of this application further includes: a second distributor 400 and a second collection tray 401. The second distributor 400 is disposed in the feed section 201 and is connected to the tower body 100 and the partition plate 200 respectively. Along the height direction of the tower body 100, the second distributor 400 is spaced above the first distributor 300. The second collection tray 401 is disposed in the discharge section 202 and is connected to the tower body 100 and the partition plate 200 respectively. Along the height direction of the tower body 100, the second collection tray 401 is disposed above the first collection tray 301.

[0093] Understandably, by setting up the second distributor 400, the second distributor 400 can uniformly distribute the products to be separated within the feed section 201, thereby improving the mass transfer or heat transfer efficiency of the products to be separated in the diverter column. By setting up the second collecting tray 401, the second collecting tray 401 can collect the fluid flowing down from the top of the diverter column, thereby facilitating the separation of silicates and alcohols in the products to be separated.

[0094] The tower body 100 provided in the embodiments of this application has a second liquid inlet 103 and a second liquid outlet 104. Along the axial direction of the tower body 100, the second liquid inlet 103 and the second liquid outlet 104 are spaced apart. Along the height direction of the tower body 100, the second liquid outlet 104 is positioned higher than the second liquid inlet 103. Along the height direction of the tower body 100, the second liquid inlet 103 is spaced above the first liquid inlet 101. Along the height direction of the tower body 100, the second liquid outlet 104 is spaced above the first liquid outlet 102. The partition tower also includes a third pipeline 500 and a first regulating valve 501. One end of the third pipeline 500 is connected to the second liquid collection tray 401 through the second liquid outlet 104, and the other end of the third pipeline 500 is connected to the second distributor 400 through the second liquid inlet 103. The first regulating valve 501 is located on the third pipeline 500.

[0095] Understandably, by setting up the third pipeline 500, the product to be separated in the second collecting tray 401 can be transported to the second distributor 400 under its own gravity after passing through the third pipeline 500. This allows the second distributor 400 to evenly distribute the product to be separated from the second collecting tray 401, thereby improving the mass transfer or heat transfer efficiency of the product to be separated in the adjacent column. Furthermore, it allows for mass transfer between the product to be separated in the feed section 201 and the discharge section 202, thereby accelerating the separation of silicates and alcohols from the product. By setting up the first regulating valve 501, the connection between the first pipeline 302 and the second collecting tray 401 and the second distributor 400 can be opened or closed.

[0096] It should be noted that the first regulating valve 501 can be a first check valve, a first ball valve, a first butterfly valve, or other valves that can perform a switching function. There are no restrictions here, and it can be selected according to actual usage requirements.

[0097] The tower body 100 provided in the embodiments of this application has a first opening 105 and a second opening 106. The first opening 105 and the second opening 106 are spaced apart along the circumferential direction of the tower body 100. The second opening 106 is positioned higher than the first opening 105 along the height direction of the tower body 100. The first opening 105 is spaced above the second liquid inlet 103 along the height direction of the tower body 100. The second opening 106 is spaced above the second liquid outlet 104 along the height direction of the tower body 100. The partition tower also includes: a first connecting member 600 and a second regulating valve 601. The first connecting member 600 is disposed in the tower body 100. One end of the first connecting member 600 is connected to the inner cavity of the tower body 100 through the second opening 106. The other end of the first connecting member 600 is connected to the feed section 201 through the first opening 105. The second regulating valve 601 is disposed in the first connecting member 600.

[0098] Understandably, by setting the first connecting member 600, the product to be separated within the inner cavity can be conveyed to the feed section 201 under its own gravity after passing through the first connecting member 600. This allows the product to be separated within the gap between the top surface of the partition 200 and the inner top wall of the tower body 100 to be conveyed to the feed section 201 through the first connecting member 600. Since the cross-section of the feed section 201 along the radial direction of the partition tower is smaller than the cross-section of the gap between the top surface of the partition 200 and the inner top wall of the tower body 100 along the radial direction, the product to be separated moves at a slower speed as it moves from the feed section 201 to the gap between the top surface of the partition 200 and the inner top wall of the tower body 100. This allows the silicate ester and alcohol in the product to be separated. By setting the second regulating valve 601, the connection between the first connecting member 600 and the inner cavity and feed section 201 can be opened or closed.

[0099] It should be noted that the second regulating valve 601 can be a second check valve, a second ball valve, a second butterfly valve, or other valves that can perform a switching function. There are no restrictions here, and it can be selected according to actual usage requirements.

[0100] The tower body 100 provided in the embodiments of this application has a third liquid inlet 107 and a third liquid outlet 108. Along the height direction of the tower body 100, the third liquid inlet 107 is set higher than the third liquid outlet 108. Along the height direction of the tower body 100, the third liquid outlet 108 is spaced above the second opening 106. The adjacent tower also includes: a third distributor 700, a fourth pipeline 701, a condenser 702, a reflux tank 703, a tower top reflux pump 704, and a fifth pipeline 705. The third distributor 700 is located in the inner cavity along the height direction of the tower body 100. The third distributor 700 is spaced above the second liquid collection tray 401. One end of the fourth pipeline 701 is connected to the inner cavity through the third liquid inlet 107, and the other end of the fourth pipeline 701 is connected to the third distributor 700 through the third liquid outlet 108. The condenser 702 is thermally connected to the third distributor 700. The reflux tank 703 is connected to the fourth pipeline 701. The top reflux pump 704 is connected to the fourth pipeline 701. Along the extension direction of the fourth pipeline 701, the top reflux pump 704 is located at the end of the reflux tank 703 away from the condenser 702. The fifth pipeline 705 is connected to the fourth pipeline 701. Along the extension direction of the fourth pipeline 701, the fifth pipeline 705 is located between the top reflux pump 704 and the third liquid inlet 107.

[0101] Understandably, by setting up the fourth pipeline 701, the alcohol in the product to be separated in the inner cavity can enter the interior of the fourth pipeline 701, and after heat exchange in the condenser 702, it is condensed into liquid alcohol, and then stored in the interior of the reflux tank 703. By setting up the top reflux pump 704, the liquid alcohol in the reflux tank 703 can be transported to the liquid alcohol conveying device through the fifth pipeline 705, or it can be transported to the third distributor 700 through the third liquid outlet 108. By transporting the liquid alcohol to the third distributor 700 through the third liquid outlet 108, the liquid alcohol can be heated and vaporized in the inner cavity, thereby increasing the pressure in the inner cavity, which makes it easier to maintain the stable gas pressure in the inner cavity, so that the silicate ester in the product to be separated can be distributed at the first liquid collection tray 301.

[0102] It should be noted that the end of the fifth pipeline 705 opposite to the fourth pipeline 701 is used to connect to an external liquid alcohol conveying device.

[0103] The tower body 100 provided in the embodiments of this application has a third opening 109 and a fourth opening 110. The third opening 109 and the fourth opening 110 are spaced apart along the circumferential direction of the tower body 100. The fourth opening 110 is positioned higher than the third opening 109 along the height direction of the tower body 100. The third opening 109 is spaced below the first liquid inlet 101 along the height direction of the tower body 100. The fourth opening 110 is spaced below the first liquid outlet 102 along the height direction of the tower body 100. The partition tower also includes a second connecting member 800 and a third regulating valve 801. One end of the second connecting member 800 is connected to the discharge section 202 through the fourth opening 110, and the other end of the second connecting member 800 is connected to the feed section 201 through the third opening 109. The third regulating valve 801 is disposed on the second connecting member 800.

[0104] Understandably, by setting the second connecting member 800, the product to be separated in the discharge section 202 can be transported to the feed section 201 under its own gravity after passing through the first connecting member 600. This means the product to be separated in the discharge section 202 can be transported to the feed section 201 via the second connecting member 800. During this process, the change in cross-sectional area between the feed section 201, the discharge section 202, and the second connecting member 800 accelerates the mass transfer between silicates and high-boiling-point substances, thus accelerating their separation. By setting the third regulating valve 801, the connection between the second connecting member 800 and the feed section 201 and the discharge section 202 can be opened or closed.

[0105] It should be noted that the third regulating valve 801 can be a third check valve, a third ball valve, a third butterfly valve, or other valves that can perform a switching function. There are no restrictions here, and it can be selected according to the actual use requirements.

[0106] The tower body 100 provided in the embodiments of this application has a fourth liquid inlet 111 and a fourth liquid outlet 112. Along the height direction of the tower body 100, the fourth liquid outlet 112 is spaced below the fourth liquid inlet 111. Along the height direction of the tower body 100, the fourth liquid inlet 111 is spaced below the third opening 109. The adjacent tower also includes: a sixth pipeline 900, a second heat exchanger 901, a seventh pipeline 902, and a bottom pump 903. One end of the sixth pipeline 900 is connected to the inner cavity through the fourth liquid inlet 111, and the other end of the sixth pipeline 900 is connected to the inner cavity through the fourth liquid outlet 112. The second heat exchanger 901 is connected to the sixth pipeline 900, and the seventh pipeline 902 is connected to the sixth pipeline 900. Along the extension direction of the sixth pipeline 900, the seventh pipeline 902 is located between the fourth liquid outlet 112 and the second heat exchanger 901. The bottom pump 903 is connected to the seventh pipeline 902.

[0107] It is understood that, through the above-described embodiments, high-boiling-point substances can be transported to the high-boiling-point substance conveying device after passing through the sixth pipeline 900, the seventh pipeline 902, and the bottom pump 903. Furthermore, after heat exchange through the sixth pipeline 900 and the second heat exchanger 901, the high-boiling-point substances can return to the inner cavity, thereby making the temperature at the gap between the bottom surface of the partition plate 200 and the inner bottom wall of the tower body 100 more stable. As a result, the silicate esters in the product to be separated can be distributed at the first collection tray 301.

[0108] The partition wall column provided in the embodiments of this application can separate the product to be separated into alcohols, silicates, and high-boiling substances. The separation steps are as follows:

[0109] The product to be separated is conveyed to the feed section 201 through the second pipeline 303. The product to be separated is separated into a first intermediate product and a second intermediate product in the feed section 201. The first intermediate product is conveyed to the discharge section 202 through the feed section 201 and the common distillation section. The second intermediate product is conveyed to the discharge section 202 through the feed section 201 and the common lifting section.

[0110] Open the second regulating valve 601 to transport the first intermediate product in the common distillation section to the feed section 201 through the first connecting member 600; open the first regulating valve 501 to transport the first intermediate product in the discharge section 202 to the feed section 201 through the third pipeline 500; so that the first intermediate product can be separated into a light component of alcohol and an intermediate component of silicate ester.

[0111] The third regulating valve 801 is opened, and the second intermediate product in the discharge section 202 is conveyed to the feed section 201 through the second connecting member 800, so that the second intermediate product can be separated into the intermediate component silicate ester and the heavy component high boiling point.

[0112] Therefore, the product to be separated can be separated into alcohols, silicates, and high-boiling-point substances. In this case, the alcohols, silicates, and high-boiling-point substances can also be collected, and the collection steps are as follows:

[0113] The alcohol at the top of the column is condensed and liquefied into liquid alcohol through the fourth pipeline 701, condenser 702 and reflux tank 703. A portion of the liquid alcohol is transported to the outside through the top reflux pump 704 and the fifth pipeline 705, and another portion of the liquid alcohol is returned to the column body 100 through the top reflux pump 704 and the fourth pipeline 701.

[0114] The silicate ester at the first collection tray 301 is transported to the outside through the first pipeline 302, the product buffer tank 305 and the product pump 306, and the second pipeline 303 and the first pipeline 302 exchange heat through the first heat exchanger 304;

[0115] A portion of the high-boiling-point substance at the bottom of the column is refluxed back to the bottom of the column via the sixth pipeline 900 and the second heat exchanger 901, while another portion of the high-boiling-point substance is transported to the outside via the column bottom pump 903 and the seventh pipeline 902.

[0116] Embodiments of this application provide a distillation apparatus, including the partition column provided in any of the above embodiments.

[0117] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0118] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0119] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0120] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A partition tower, characterized in that, include: Tower (100); A partition (200) is disposed inside the tower body (100). The partition (200) extends along the height direction of the tower body (100). Along the height direction of the tower body (100), the top surface of the partition (200) and the inner top wall of the tower body (100) are spaced apart, and the bottom surface of the partition (200) and the inner bottom wall of the tower body (100) are spaced apart. Along the height direction intersecting the tower body (100), one side wall of the partition (200) and a part of the inner wall of the tower body (100) enclose a feeding section (201), and the other side wall of the partition (200) and another part of the inner wall of the tower body (100) enclose a discharging section (202). The first distributor (300) is located in the feed section (201) and is connected to the tower body (100) and the partition (200) respectively. The first liquid collection tray (301) is located in the discharge section (202) and is connected to the tower body (100) and the partition plate (200) respectively.

2. The partition tower according to claim 1, characterized in that, The tower body (100) has a first liquid inlet (101) and a first liquid outlet (102), and the first liquid inlet (101) and the first liquid outlet (102) are spaced apart along the circumferential direction of the tower body (100); The adjacent tower also includes: A first pipeline (302) is provided in the tower body (100), and the first pipeline (302) is connected to the first liquid collection tray (301) through the first liquid outlet (102); The second pipeline (303) is provided in the tower body (100), and the second pipeline (303) is connected to the first distributor (300) through the first liquid inlet (101); A first heat exchanger (304) has a first heat exchange channel and a second heat exchange channel, the first heat exchange channel and the second heat exchange channel are thermally connected, the first heat exchange channel is connected to one of the first pipeline (302) and the second pipeline (303), and the second heat exchange channel is connected to the other of the first pipeline (302) and the second pipeline (303).

3. The partition tower according to claim 2, characterized in that, The adjacent tower also includes: Product buffer container (305) is connected to the first pipeline (302); The product pump (306) is connected to the first pipeline (302) and is located between the product buffer tank (305) and the first heat exchanger (304) along the arrangement direction of the first pipeline (302).

4. The partition tower according to claim 2 or 3, characterized in that, The adjacent tower also includes: The second distributor (400) is located in the feed section (201) and is connected to the tower body (100) and the partition (200) respectively. Along the height direction of the tower body (100), the second distributor (400) is spaced above the first distributor (300). The second liquid collection tray (401) is located in the discharge section (202) and is connected to the tower body (100) and the partition plate (200) respectively. Along the height direction of the tower body (100), the second liquid collection tray (401) is spaced above the first liquid collection tray (301).

5. The partition tower according to claim 4, characterized in that, The tower body (100) has a second liquid inlet (103) and a second liquid outlet (104). Along the circumferential direction of the tower body (100), the second liquid inlet (103) and the second liquid outlet (104) are spaced apart. Along the height direction of the tower body (100), the second liquid outlet (104) is positioned higher than the second liquid inlet (103). Along the height direction of the tower body (100), the second liquid inlet (103) is spaced above the first liquid inlet (101). Along the height direction of the tower body (100), the second liquid outlet (104) is spaced above the first liquid outlet (102). The adjacent tower also includes: The third pipeline (500) has one end connected to the second liquid collection tray (401) through the second liquid outlet (104), and the other end connected to the second distributor (400) through the second liquid inlet (103). The first regulating valve (501) is located on the third pipeline (500).

6. The partition tower according to claim 5, characterized in that, The tower body (100) has a first opening (105) and a second opening (106). Along the circumferential direction of the tower body (100), the first opening (105) and the second opening (106) are spaced apart. Along the height direction of the tower body (100), the second opening (106) is higher than the first opening (105). Along the height direction of the tower body (100), the first opening (105) is spaced above the second liquid inlet (103). Along the height direction of the tower body (100), the second opening (106) is spaced above the second liquid outlet (104). The adjacent tower also includes: A first connecting member (600) is provided on the tower body (100). One end of the first connecting member (600) is connected to the inner cavity of the tower body (100) through the second opening (106), and the other end of the first connecting member (600) is connected to the feeding section (201) through the first opening (105). The second regulating valve (601) is located on the first connecting member (600).

7. The partition tower according to claim 6, characterized in that, The tower body (100) has a third liquid inlet (107) and a third liquid outlet (108). Along the height direction of the tower body (100), the third liquid inlet (107) is set higher than the third liquid outlet (108). Along the height direction of the tower body (100), the third liquid outlet (108) is spaced above the second opening (106). The adjacent tower also includes: The third distributor (700) is located in the inner cavity and is arranged at intervals above the second liquid collection tray (401) along the height direction of the tower body (100). The fourth pipeline (701) has one end connected to the inner cavity through the third inlet (107), and the other end connected to the third distributor (700) through the third outlet (108). The condenser (702) is thermally connected to the third distributor (700); A reflux tank (703) is connected to the fourth pipeline (701). A top reflux pump (704) is connected to the fourth pipeline (701). Along the extension direction of the fourth pipeline (701), the top reflux pump (704) is located at the end of the reflux tank (703) away from the condenser (702). The fifth pipeline (705) is connected to the fourth pipeline (701) and is located between the top reflux pump (704) and the third inlet (107) along the extension direction of the fourth pipeline (701).

8. The partition tower according to claim 2 or 3, characterized in that, The tower body (100) has a third opening (109) and a fourth opening (110). The third opening (109) and the fourth opening (110) are spaced apart along the circumferential direction of the tower body (100). The fourth opening (110) is higher than the third opening (109) along the height direction of the tower body (100). The third opening (109) is spaced apart below the first liquid inlet (101) along the height direction of the tower body (100). The fourth opening (110) is spaced apart below the first liquid outlet (102) along the height direction of the tower body (100). The adjacent tower also includes: The second connecting member (800) has one end connected to the discharge section (202) through the fourth opening (110), and the other end connected to the feed section (201) through the third opening (109). The third regulating valve (801) is located on the second connecting member (800).

9. The partition tower according to claim 8, characterized in that, The tower body (100) has a fourth liquid inlet (111) and a fourth liquid outlet (112). Along the height direction of the tower body (100), the fourth liquid outlet (112) is spaced below the fourth liquid inlet (111); along the height direction of the tower body (100), the fourth liquid inlet (111) is spaced below the third opening (109). The adjacent tower also includes: The sixth pipeline (900) has one end connected to the inner cavity of the tower body (100) through the fourth liquid inlet (111), and the other end connected to the inner cavity through the fourth liquid outlet (112). The second heat exchanger (901) is connected to the sixth pipeline (900). The seventh pipeline (902) is connected to the sixth pipeline (900) and is located between the fourth liquid outlet (112) and the second heat exchanger (901) along the extension direction of the sixth pipeline (900). The tower bottom pump (903) is connected to the seventh pipeline (902).

10. A distillation apparatus, characterized in that, Includes a partition tower according to any one of claims 1-9.

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