WO2015009117A1 - 분리벽형 증류탑 - Google Patents
분리벽형 증류탑 Download PDFInfo
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- WO2015009117A1 WO2015009117A1 PCT/KR2014/006574 KR2014006574W WO2015009117A1 WO 2015009117 A1 WO2015009117 A1 WO 2015009117A1 KR 2014006574 W KR2014006574 W KR 2014006574W WO 2015009117 A1 WO2015009117 A1 WO 2015009117A1
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- distillation column
- dividing wall
- region
- raw material
- wall distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
Definitions
- the present application relates to a dividing wall distillation column and a method for separating 2-ethylhexyl acrylate using the same.
- Various raw materials such as crude oil, etc., are a mixture of various substances, for example various compounds, which raw materials can typically be used after being separated into the respective compounds.
- a typical chemical process for separating the mixture is a distillation process.
- the mixture may be distilled through one or more distillation towers, in which part or all of the flow may pass through a condenser or reboiler and then refluxed to the distillation tower, through which the compounds of high purity Can be obtained.
- raw materials comprising at least three components can be separated into their respective components by passing through at least two distillation columns, for example, at the top of the first distillation column, low boiling point components are preferentially separated from the raw materials, and the first distillation column At the top and bottom of the second distillation column connected to the middle boiling point component and the high boiling point component can be separated from the raw material, respectively. In this case, remixing of the middle boiling point component may occur in the lower region of the first distillation column, and thus additional energy consumption may occur.
- An object of the present application is to provide a method for separating 2-ethylhexyl acrylate with high purity using a dividing wall distillation column and the dividing wall distillation column.
- the present application relates to a dividing wall distillation column.
- the dividing wall distillation column of the present application it is possible to minimize the energy loss generated during the purification of the mixture, for example, a raw material including the compound of Formula 1 below, and distillation than when using two distillation columns, Since the installation cost of the device can be reduced, the economics of the process can be improved.
- the dividing wall distillation column 100 is a dividing wall distillation column 100 into which the raw material F 1 containing the compound of Formula 1 is introduced and purified.
- R 1 represents hydrogen, an alkyl group having 1 to 10 carbon atoms, for example, 1 to 8 carbon atoms, 1 to 6 carbon atoms, or 1 to 4 carbon atoms
- R 2 is an alkyl group, for example, carbon atoms Linear or branched alkyl groups having 1 to 24, 1 to 20 carbon atoms, 1 to 16 carbon atoms, 1 to 12 carbon atoms or 1 to 8 carbon atoms.
- the component of Formula 1 is not particularly limited as long as it is a compound satisfying Formula 1.
- a compound satisfying Formula 1 for example, butyl acrylate, methyl acrylate, methyl methacrylate, 2-ethylhexyl acrylate, acrylic acid , Ethylene glycol, butyl alcohol, methyl alcohol or isopropyl alcohol, preferably 2-ethylhexyl acrylate.
- the dividing wall distillation column 100 is a device designed for the distillation of the raw material F 1 including three components of low boiling point, middle boiling point, and high boiling point, and is similar to a thermodynamic distillation column. .
- the thermocomposite distillation column is designed to separate low boiling point and high boiling point materials in a preliminary separator and to separate low boiling point, middle boiling point and high boiling point materials in a main separator, respectively.
- the dividing wall distillation column 100 is a form in which a preliminary separator is integrated into the main separator by installing a dividing wall in the tower.
- the dividing wall distillation column 100 of the present application may have a structure as shown in FIG. 1.
- an exemplary dividing wall distillation column 100 is divided by a dividing wall 101 and includes a first condenser 102, a second condenser 103 and a reboiler 104. do.
- the dividing wall type distillation column 100 may have a structure in which the dividing wall 101 is in contact with the top of the distillation column 100 and is spaced apart from the bottom of the column. Accordingly, the inside of the dividing wall distillation column 100 is divided into a first dotted line 110 and a second region 120 divided by the dividing wall 101, as shown in FIG.
- the partition wall 101 is not positioned and may be divided into a third region 130 at the bottom of the first region 110 and the second region 120.
- the first region 110, the second region 120, and the third region 130 may be divided into upper and lower portions, respectively. Therefore, the inside of the dividing wall distillation column 100 of the present application is an upper portion of the first region 110, a lower portion of the first region 110, an upper portion of the second region 120, a lower portion of the second region 120, and a third portion. It may be divided into an upper portion of the region 130 and a lower portion of the third region 130.
- the dividing wall distillation column 100 of the present application has a structure in which the dividing wall 101 is in contact with the top of the column, so that the upper portion of the first region 110 and the upper portion of the second region 120 are the dividing wall ( 101 may be separated or isolated from each other. Accordingly, the flow flowing out of the upper portion of the first region 110 and the flow flowing out of the upper portion of the second region 120 may be prevented from being mixed with each other.
- the terms "upper and lower portion of the first region” mean a relatively upper portion and a relatively lower portion in the first region, respectively.
- first region 110 divided by the dividing wall 101 in the dividing wall type distillation column 100 is divided into two parts in the height or length direction of the distillation column 100, among the two divided regions. It can mean the upper portion and the lower portion, respectively.
- first and lower part of the second area mean a relatively upper part and a relatively lower part in the second area, respectively, and are divided by the separating wall 101 in the dividing wall distillation column 100.
- the second region 120 to be divided into two equal parts in the height or length direction of the distillation column 100 may mean an upper portion and a lower portion, respectively.
- the upper part and the lower part of a 3rd area mean the upper part and the lower part relatively in the said 3rd area 130, respectively, and the 3rd area 130 is the height of the distillation column 100, or When divided into two in the longitudinal direction it may mean the upper portion and the lower portion of the two divided areas.
- the term "separation or isolation" above means that the flow in each region flows or exists independently in the region divided by the separation wall 101.
- the fluid flow in the first region 110 of the dividing wall distillation column 100 flows out from the upper portion of the first region 110 or flows out from the lower portion of the first region 110 to form the third region ( 130
- the fluid flow in the second region 120 flows out of the upper portion of the second region 120 or flows out of the lower portion of the second region 120 and flows into the third region 130. Since the flows of the first region 110 and the second region 120 are not mixed with each other and can be mixed only in the third region 130, they may flow independently of each other.
- the dividing wall distillation column 100 is a first inflow outflow from the upper portion of the raw material inlet 111, the raw material (F 1 ) is supplied, the first region 110 of the dividing wall distillation column (100). flow a first top product which is (F 2), the outflow outlet (112), said first effluent stream first upper reflux inlet 113, a part or all of the (F 2) is refluxed with separation Wall distillation column 100 , A second upper product outlet 121 through which the second outlet stream F 3 flowing out from the upper portion of the second region 120 of the dividing wall distillation column 100 flows out, and the second outlet stream F 3 .
- Third lower reflux that flows back to the inlet may include a portion 132.
- the raw material inlet 111 may be located in the first region 110 of the dividing wall distillation column 100, and preferably, of the first region 110 of the dividing wall distillation column 100. It may be located at the bottom.
- first upper product outlet 112 and the first upper reflux inlet 113 may be located above the first region 110 of the dividing wall distillation column 100, preferably the first The first product outlet 112 may be located at the top of the first region 110 of the dividing wall distillation column 100.
- second upper product outlet 121 and the second upper reflux inlet 122 may be located above the second region 120 of the dividing wall distillation column 100, and preferably The upper product outlet 121 may be located at the top of the second region 120 of the dividing wall distillation column 100.
- the third bottom product outlet 131 and the third bottom reflux inlet 132 may be located below the third region 130 of the dividing wall distillation column 100, and preferably the third The bottom product outlet 131 may be located at the bottom of the third region 130 of the dividing wall distillation column 100.
- “Top column” of the dividing wall distillation column 100 means the top portion of the column of the dividing wall distillation column 100, and may be included in the upper portion of the dividing wall distillation column 100 described above, and the dividing wall distillation column 100 "Top” means the bottom of the column of the dividing wall distillation column 100, and may be included in the lower portion of the dividing wall distillation column 100 described above.
- a material having a relatively low boiling point may flow out of the components included in the raw material F 1
- the second upper product outlet may flow out.
- a material having a relatively middle boiling point may flow out of the components included in the raw material F 1
- the third upper product outlet 152 may include the components contained in the raw material F 1 . Relatively high boiling point materials can be released.
- low boiling point flow is discharged from the upper portion of the first region 110 of the dividing wall distillation column 100, and is relatively low among the raw material (F 1 ) component containing three components of low boiling point, middle boiling point and high boiling point
- the low boiling point component having a boiling point means a rich flow
- the term “high boiling point flow” is discharged from the lower portion of the third region 130 of the dividing wall distillation column 100, and has a low boiling point, a middle boiling point and a high boiling point.
- the raw material (F 1 ) component containing three components means a high flow of the high boiling point component having a relatively high boiling point.
- the term "middle boiling point flow” flows out from the upper portion of the second region 120 of the dividing wall distillation column 100, and has a low boiling point component among the raw material (F 1 ) components including three components of low boiling point, middle boiling point and high boiling point.
- the heavy boiling point component having a boiling point between and the high boiling point component means a rich flow.
- the term "rich flow” means a low boiling point component included in the flow discharged from the upper portion of the first region 110, a middle boiling point component contained in the flow discharged from the upper portion of the second region 120, and a third region ( The content of each of the high boiling point components included in the stream discharged from the bottom of 130) is higher than the content of each of the low boiling point component, the high boiling point component and the middle boiling point component included in the raw material F 1 .
- the low boiling point component included in the first effluent stream discharged from the upper portion of the first region 110 of the dividing wall distillation column 100 is included in the second effluent stream discharged from the upper portion of the second region 120.
- the content of each of the high boiling point components and the high boiling point components included in the third effluent stream discharged from the lower portion of the third region 130 are 50% by weight, 80% by weight, 90% by weight, 95% by weight. It may mean a flow of more than or 99% by weight or more.
- the low boiling point flow and the first outflow stream F 2 may be used in the same sense, and the middle boiling point flow and the second outflow stream F 3 may be used in the same sense, and the high boiling point flow and the third outflow stream may be used.
- Flow F 4 may be used in the same sense.
- the raw material F 1 is the first region 110 of the dividing wall distillation column 100 as shown in FIG. 1.
- the raw material (F 1 ) may be introduced into the raw material inlet 111 of the lower portion of the first region 110, and has a relatively low boiling point among the components included in the raw material (F 1 ).
- the low boiling point component flows out of the upper portion of the first region 110, and the middle boiling point and high boiling point component having a relatively high boiling point flows into the third region 130.
- the flow of the middle boiling point component having a relatively low boiling point among the flows introduced into the third region 130 flows into the second region 120, and the flow of the high boiling point component having the relatively high boiling point is controlled by the third region ( From the bottom of 130).
- a component having a relatively low boiling point in the flow introduced into the second region 120 flows out of the upper portion of the second region 120.
- the raw material F 1 introduced into the raw material inlet 111 positioned below the first region 110 of the dividing wall distillation column 100 has a relatively low boiling point in the first region 110.
- the separating Wall distillation column 100 in the first upper product outlet 112 a low boiling point component in the composition of the raw material (F 1) comprising the three components a first outlet flow from the ( F 2 ) is discharged, and the middle boiling point component and the high boiling point component having a relatively high boiling point flow into the third region 130.
- the component introduced into the third region 130 is separated into a component having a relatively low boiling point and a component having a high boiling point, and in the third lower product outlet 131 of the dividing wall distillation column 100, the third region (
- the high boiling point component among the components of the raw material F 1 including three components, that is, the relatively high boiling point component introduced into 130, is discharged to the third outflow stream F 4 .
- the middle boiling point components among the components of the raw material F 1 including the three components that is, the relatively low boiling point among the components introduced into the third region 130 flow into the second region 120.
- a component having a relatively low boiling point and a component having a high boiling point may be separated, and some may be re-introduced into the first region 110.
- the relatively low boiling point component that is, the middle boiling point component among the components of the raw material F 1 including the three components is the second upper product of the dividing wall distillation column 100.
- the second outlet stream F 3 may be discharged from the outlet 121, and a component having a relatively high boiling point among components introduced into the second region 120 may be introduced into the third region 130 again. have.
- the distillation column 100 when the raw material F 1 including 2-ethylhexyl acrylate flows into the dividing wall distillation column 100, the distillation column 100 is located at the top of the first region 110 of the dividing wall distillation column 100.
- a first and a first effluent stream (F 2) is ejected from the upper product outlet (112), said first effluent stream (F 2) is a second of the through the first condenser 102, some separation Wall distillation column 100 1 is refluxed to the upper reflux inlet 113, the remaining portion may be stored as a product.
- the third outlet stream F 4 is discharged from the third lower product outlet 131 located at the bottom of the third region 130 of the dividing wall distillation column 100, and the third outlet stream F is discharged. 4 ) is passed through the reboiler 104, a part of which is refluxed to the third bottom reflux inlet 132 of the dividing wall distillation column 100, and the other part may be stored as a product.
- the second effluent stream F 3 comprising 2-ethylhexyl acrylate, which is a relatively middle boiling point component, of the components of the raw material F 1 is the second region 120 of the dividing wall distillation column 100.
- the condenser may be a device installed separately from the distillation column, and may be a device for cooling the flow flowing out of the dividing wall distillation column 100 by contacting the coolant introduced from the outside. Specifically, the condenser may cool the flow flowing out of the dividing wall distillation column 100 by using sensible heat of cooling water.
- the dividing wall distillation column includes a first condenser 102 and a second condenser 103.
- the first condenser 102 is a device for condensing the first effluent stream F 2 flowing out of the upper portion of the first region 110 of the dividing wall distillation column 100
- the second condenser ( 103 may be a device for condensing the second outlet stream F 3 flowing out of the upper portion of the second region 120 of the dividing wall distillation column 100.
- the "reboiler” is a heating device installed on the outside of the distillation column, may be a device for heating and evaporating again the high boiling point flowing out of the dividing wall distillation column (100).
- the reboiler 104 may be a device for heating the third outlet stream (F 4 ) flowing out from the lower portion of the third region 130 of the dividing wall distillation column (100).
- the temperature of the first outflow (F 2 ) may be 80 to 115 °C, 85 to 100 °C, or 90 to 130 °C
- the second outlet stream ( The temperature of F 3 ) may be 100 to 130 ° C., 120 to 125 ° C., or 108 to 120 ° C.
- the temperature of the third outflow stream F 4 is 120 to 160 ° C., 130 to 155 ° C., or 140 to 147 ° C.
- the separation reflux ratio of Wall Distillation Column second effluent stream (F 3) that flows back to the top of the second region 120 of the system 100 may be in the range of 0.01 to 5.0, wherein thermodynamic From a viewpoint, Preferably it may be 0.05-1.0, or 0.1-2.0.
- the term "reflux ratio” as used herein refers to the ratio of the flow rate refluxed with respect to the outflow flow rate flowing out of the distillation column (100).
- the raw material inlet 111, the first upper reflux inlet 113, the second upper reflux inlet 122 and the third lower reflux inlet of the dividing wall distillation column 100 may be formed of two or more openings that are spaced apart from each other. Accordingly, by blocking the channeling generated in the purification process of the raw material (F 1 ) it is possible to minimize the energy loss and to improve the economics of the process.
- the "drift phenomenon” refers to a phenomenon in which a contact between a vapor and a liquid mixture does not occur smoothly in a distillation column, or in the case of a dividing wall distillation column, a fluid flow phenomenon in which a fluid flows to a specific part of a wall surface. Silver significantly reduces the separation efficiency of raw materials and causes additional energy consumption.
- the two or more openings may be positioned such that the flow into or out of the dividing wall distillation column 100 may flow in two or more directions or flow in two or more directions.
- the first region 110 of the dividing wall distillation column 100 may include two or more first subregions 110 that divide the horizontal cross-sectional area of the distillation column 100 evenly.
- 2 is a cross-sectional view parallel to the ground of an exemplary dividing wall distillation column 100. As shown in FIG.
- the dividing wall distillation column 100 is divided into a first region 110 and a second region 120 divided by the dividing wall 101, and the first region 110 is a distillation column ( An arbitrary small area, for example, a plurality of first small areas 110a and 110b, which divides the horizontal cross-sectional area of 100 into an equal area, and the second area 120 likewise has a distillation column ( It may include any of a plurality of second subregions (120a, 120b) to divide the horizontal cross-sectional area of 100 by an equal area.
- the first subregions 110a and 110b and the second subregions 120a and 120b are areas in which the horizontal cross-sectional areas of the first region 110 and the second region 120 are divided by an equal width, respectively. Can be.
- At least one of the raw material inlet 111 and the first upper reflux inlet 113 of the first region 110 of the dividing wall distillation column 100 is formed of two or more openings spaced apart from each other.
- the two or more openings may be located in the two or more first subregions, respectively.
- the two or more openings may be “each located” may mean that one opening is located in one small region in a plurality of small regions equally divided by the number of the openings.
- 3 is a diagram illustrating a cross section parallel to the ground of the upper part of the dividing wall distillation column 100 according to the present application, in which two openings are formed. For example, as divided by a virtual dotted line in FIG.
- the first region 110 may include two even first subregions 110a and 110b, and the dividing wall distillation column 100 may be used.
- the raw material inlet 111 and the first upper reflux inlet 113 is formed of two openings spaced apart from each other, one opening is two of the first small region (110a, 110b) Is located in one small region 110a and the other one opening is located in the other small region 110b adjacent to the small region 110a where the one opening is located, thereby opening one opening in each region. Can be located.
- the raw material F 1 or the reflux flow is supplied in only one direction. In this case, a drift phenomenon may occur. However, when at least one of the raw material inlet 111 and the first upper reflux inlet 113 of the dividing wall distillation column 100 is formed with two or more openings, the raw material F 1 or the reflux flow is two or more The drift phenomenon can be prevented by flowing in evenly in the direction.
- the drift phenomenon can be effectively suppressed by adjusting the position of each opening, the flow rate and the direction of each flow according to the number of two or more openings.
- the two raw material inflow The unit 111 and the first upper reflux inlet 113 may be located in the first small regions 110a and 110b divided into two evenly divided sections parallel to the ground of the first region 110. .
- the angle of the extension line extending from the one of the two openings to the center of the distillation column 100 and the extension line extending from the other opening to the center of the distillation column 100 is 85 ° to 95 °, It may be 87 ° to 93 °, or 89 ° to 91 °, by adjusting the angle in the above range, it is possible to maximize the blocking of the drift phenomenon. Also, in this case, the direction of the vector component of each raw material (F 1 ) flow flowing through the two raw material inlet 111 may all be toward the center point of the cross section parallel to the ground of the dividing wall distillation column 100.
- the inflow velocity vector component projected in the cross section of each of the raw material streams is perpendicular to the partition wall 101 passing through the center point of the cross section parallel to the ground of the dividing wall distillation column 100.
- the surfaces 1011 may be symmetrical to each other.
- the direction of the vector component of each reflux flow introduced through the two first upper reflux inlets 113 may all be directed toward the center point of the cross section parallel to the ground of the dividing wall distillation column 100.
- the inflow velocity vector component projected on the cross section of each reflux stream is a plane 1011 perpendicular to the partition wall 101 passing through the center point of the cross section parallel to the ground of the dividing wall distillation column 100. May be symmetrical with each other as a reference.
- the "inflow velocity vector component injected into the cross section” means a vector component projected on a cross section of the dividing wall distillation column 100 in which an inflow velocity (distance per unit time) vector through each inflow portion is parallel to the ground. In this case, it is possible to substantially prevent the occurrence of the drift phenomenon by adjusting the flow rate and the inflow rate of the flow flowing into the two openings, respectively.
- FIG. 4 is a diagram illustrating a cross section parallel to the ground of the upper part of the dividing wall distillation column 100 according to the present application in which three openings are formed.
- one or more of the raw material inlet 111 and the first upper reflux inlet 113 of the dividing wall distillation column 100 may be formed of three openings spaced apart from each other.
- the three openings may be located in the first subregions 110a, 110b, and 110c that are equally divided into three sections in parallel with the ground of the first region 110.
- an extension line extending from one of the three openings of the dividing wall distillation column 100 to the center of the distillation column 100 extends from the opening adjacent to the one opening to the center of the distillation column 100.
- the angle formed with may be 55 ° to 65 °, 57 ° to 63 °, or 59 ° to 61 °, by adjusting the angle in the above range, it is possible to maximize the blocking of the drift phenomenon. In this case, by adjusting the flow rate and the inflow rate of the flow flowing into each of the three openings in the same manner, it is possible to substantially prevent the occurrence of the drift phenomenon.
- FIG. 5 is a view exemplarily illustrating a cross section parallel to the ground of the dividing wall distillation column 100 having four openings.
- one or more of the raw material inlet 111 and the first upper reflux inlet 113 of the dividing wall distillation column 100 may be formed of four openings spaced apart from each other.
- the four openings may be located in the first subregions 110a, 110b, 110c, and 110d that are equally divided into four sections in parallel with the ground of the first region 110.
- an extension line extending from one of the four openings of the dividing wall distillation column 100 to the center of the distillation column 100 extends from the opening adjacent to the one opening to the center of the distillation column 100.
- the angle may be 40 ° to 50 °, 42 ° to 48 ° or 44 ° to 46 °, by adjusting the angle in the above range, it is possible to maximize the blocking of the drift phenomenon. In this case, by adjusting the flow rate and the inflow rate of the flow flowing into the four openings, respectively, it is possible to substantially prevent the occurrence of the drift phenomenon.
- the raw material inlet 111 of the dividing wall distillation column 100 may be formed of two or more openings are spaced apart from each other, the two or more openings and the ground of the dividing wall distillation column 100 It may be located in two or more first subregions that divide the parallel cross section evenly, preferably dividing the horizontal cross-sectional area of the first region 110 by an equal area.
- the dividing wall distillation column 100 in which the raw material inlet 111 is formed with one opening the liquid flow falling into the lower region of the supply end of the dividing wall distillation column does not fall evenly, and a drift phenomenon may occur. Accordingly, the separation efficiency of the raw material (F 1 ) may be lowered.
- the raw material inlet 111 of the dividing wall distillation column 100 is formed with two or more openings, it is possible to maintain the flow of the liquid falling down the raw material supply stage of the dividing wall distillation column 100 evenly, Since the drift phenomenon is suppressed, the raw material F 1 can be separated efficiently.
- the two or more openings may be located at the same end in the first region 110. Accordingly, the raw material (F 1 ) flowing into each of the two or more openings is introduced to facilitate the hydraulic flow (hydraulics) can be effectively prevented the drift phenomenon.
- the two or more raw material inlet 111 may be located at the same stage below the first region 110 of the dividing wall distillation column 100, the theoretical stage 30 to 80 stage, 40 to 70 stage
- the raw material inlet 111 formed of the two or more openings is 5 to 30 stages of the dividing wall distillation column 100, preferably 5 to 25 stages.
- it may be located at 10 to 20 steps.
- the raw material F 1 is introduced into the raw material inlet 111 formed of two or more openings at the same flow rate, it is easy to block the drift phenomenon, and the operation ease of the distillation column is excellent, thereby making the raw material F 1 highly efficient. Can be separated.
- the first upper reflux inlet 113 of the dividing wall distillation column 100 may be formed of two or more openings spaced apart from each other. In this case, as described above in the raw material inlet 111, the two or more openings equally divide the cross section parallel to the ground of the dividing wall distillation column 100, preferably, the dividing wall distillation column 100 It may be located in each of the two or more first subregions equally dividing the horizontal cross-sectional area of the first region (110).
- the first outflow flow exited from the upper portion of the first region 110 of the dividing wall distillation column 100 As the reflux flow of F 2 ) flows into the dividing wall distillation column 100 in one direction, a drift phenomenon may occur. As a result, the separation efficiency of the raw material F 1 may be lowered. In this case, additional energy is consumed to maintain the low boiling point concentration of the first outflow stream F 2 .
- the first upper reflux inlet 113 of the dividing wall distillation column 100 is formed with two or more openings, the first outflow stream flowing out from the upper portion of the first region 110 of the dividing wall distillation column 100 ( Since the flow of reflux of F 2 ) flows into the dividing wall distillation column 100 in two or more directions, the drift phenomenon is suppressed, and thus the raw material F 1 may be efficiently separated.
- the two or more first upper reflux inlets 113 may be located at the same stage above the first region 110 of the dividing wall distillation column 100, preferably the first region ( 110 may be located at the top.
- the first upper reflux inlet 113 formed of the two or more openings may be It may be located at the top of the dividing wall distillation column 100, for example, may be located at one end of the dividing wall distillation column (100).
- first upper reflux inlet 113 formed by the two or more openings are the same as those described for the two or more raw material inlets 111, and thus will be omitted.
- the second region 120 of the dividing wall distillation column 100 divides the horizontal cross-sectional area of the distillation column 100 by an equal area, preferably, the horizontal of the second region 120 It may include a plurality of second subregions that divide the cross-sectional area into equal areas.
- the second upper reflux inlet portion 122 of the dividing wall distillation column 100 may be formed of two or more openings which are spaced apart from each other, and the two or more openings may be the two or more second small regions 120. Can be located at each. 6 exemplarily shows a cross section parallel to the ground of the dividing wall distillation column 100 having two openings. For example, as divided by a virtual dotted line in FIG.
- the second region 120 may include two even second subregions 120a and 120b, and the dividing wall distillation column 100 may be used.
- the second upper reflux inlet 122 is formed of two openings spaced apart from each other, one opening is located in one small region 120a of one of the two second small regions 120a and 120b. The other one opening may be positioned in the other small region 120b adjacent to the small region 120a in which the one opening is positioned, thereby allowing one opening in each region.
- the dividing wall distillation column 100 in which the second upper reflux inlet 122 is formed as one opening, the reflux flow is supplied only in one direction, in which case, a drift phenomenon may occur.
- the separation efficiency of the raw material F 1 may be lowered, in which case additional energy is consumed to maintain the middle boiling point concentration of the second outflow stream F 3 .
- the second upper reflux inlet 122 of the dividing wall distillation column 100 is formed with two or more openings, the reflux flow may be evenly introduced in two or more directions to prevent the drift phenomenon.
- the two or more second upper reflux inlets 122 may be located at the same stage above the second region 120 of the dividing wall distillation column 100, preferably the second region ( It may be located at the top of the (120).
- the second upper reflux inlet 122 formed of the two or more openings It may be located at the top of the dividing wall distillation column 100, for example, may be located at one end of the dividing wall distillation column (100).
- both the first upper reflux inlet 113 and the second upper reflux inlet 122 of the dividing wall distillation column 100 is formed of two or more openings of the drift phenomenon may be caused by the reflux flow Maximize blocking.
- Embodiments of the first upper reflux inlet 113 and the second upper reflux inlet 122 of the dividing wall distillation column 100 described above may include the first upper product outlet 112 and the second upper product outlet ( The same may also be applied to the same as that of 121). Detailed description thereof will be omitted as it is the same as described above.
- the third region 130 of the dividing wall distillation column 100 divides the horizontal cross-sectional area of the distillation column 100 evenly, preferably, the horizontal cross-sectional area of the third region 130 It may include a plurality of third subregions dividing by an equal area.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 may be formed of two or more openings which are spaced apart from each other, and the two or more openings are respectively located in the two or more third small regions. can do.
- 7 is a view exemplarily showing a cross section parallel to the ground of the bottom of the dividing wall distillation column 100 according to the present application in which two openings are formed. For example, as divided by a virtual dotted line in FIG.
- the third region 130 may include two even third subregions 130a and 130b, and the dividing wall distillation column 100 may be used.
- the third lower reflux inlet 132 is formed of two openings spaced apart from each other, one opening is located in one small region 130a of the two third small regions 130a and 130b. The other one opening may be positioned in the other small region 130b adjacent to the small region 130a in which the one opening is positioned, so that one opening may be positioned in each region.
- the dividing wall distillation column 100 in which the third lower reflux inlet 132 is formed as one opening the reflux flow is supplied only in one direction, in which case, a drift phenomenon may occur.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 is formed with two or more openings, the reflux flow can be evenly introduced in two or more directions to prevent the drift phenomenon.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 may be formed of two or more openings that are spaced apart from each other, and the two or more openings of the dividing wall distillation column 100 Each of the third regions 130 may be positioned in two or more third subregions equally dividing the horizontal cross-sectional area.
- the third outflow flowed out from the lower portion of the third region 130 of the dividing wall distillation column.
- a drift phenomenon may occur.
- the separation efficiency of the raw material F 1 may be reduced, in which case additional energy is consumed to maintain the high boiling point concentration of the third outflow stream 102.
- the third lower reflux inlet 132 is formed with two or more openings, the third outlet stream F 4 flowed out from under the third region 130 of the dividing wall distillation column is refluxed in two or more directions. since being drift phenomenon is suppressed to maintain the separating efficiency of the material (F 1).
- the two or more third lower reflux inlets 132 may be located at the same stage below the third region 130 of the dividing wall distillation column 100, preferably the third region ( It may be located at the bottom of the 130).
- the third lower reflux inlet 132 formed of the two or more openings may be It may be located at the lowest end of the dividing wall distillation column 100, for example, may be located at 80, 70 or 60 stages of the dividing wall distillation column (100).
- the dividing wall distillation column 100 including a third lower reflux inlet 132 formed of two or more openings, the position of each opening and the flow rate of the flow flowing into each opening according to the number of the openings. And drift can be effectively suppressed by adjusting the direction.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 is formed of two openings, as described above, the two third lower reflux inlet 132 may be separated from the separation.
- the sections parallel to the ground of the wall distillation column 100 may be located in two third subregions 130a and 130b evenly divided. For example, as shown in FIG.
- the third outlet stream F 4 may be respectively refluxed to a third bottom reflux inlet 132 formed by two openings of the dividing wall distillation column 100, only It is possible to effectively suppress the drift phenomenon that may occur when reflux in one direction.
- an extension line extending from one of the two openings to the center of the distillation column 100 forms an extension line extending from the other opening to the center of the distillation column 100.
- it may be 175 ° to 185 °, preferably 177 ° to 183 °, more preferably 179 ° to 181 °.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 may be formed with three openings, and the three third lower reflux inlet 132 may be the dividing wall distillation column 100. 3) may be located in three third subregions 130a, 130b, and 130c which are equally divided in cross section parallel to the ground.
- the third outflow stream F 4 may be refluxed to the third lower reflux inlet 132 formed by the three openings of the dividing wall distillation column 100, respectively.
- an extension line extending from one of the three openings to the center of the distillation column 100 forms an extension line extending from the remaining two openings to the center of the distillation column 100.
- it may be 115 ° to 125 °, preferably 117 ° to 123 °, more preferably 119 ° to 121 °.
- the third lower reflux inlet 132 of the dividing wall distillation column 100 may be formed with four openings, and the four third lower reflux inlet 132 may be the dividing wall distillation column ( 100 may be positioned in four third subregions 130a, 130b, 130c, and 130d that are equally divided in cross section parallel to the ground.
- the third outflow stream F 4 may be refluxed to the third lower reflux inlet 132 formed by the four openings of the dividing wall distillation column 100, respectively. The drift phenomenon can be effectively suppressed. In this case, as shown in FIG.
- an extension line extending from one of the four openings to the center of the distillation column 100 extends from two openings adjacent to the one opening to the center of the distillation column 100.
- the angle formed with can be, for example, 85 ° to 95 °, preferably 87 ° to 93 °, more preferably 89 ° to 91 °.
- 9, 11 and 13 are views exemplarily showing a cross section parallel to the ground of the bottom of the dividing wall distillation column 100 according to the exemplary embodiment of the present application.
- 9, 11, and 13 in the dividing wall distillation column 100 of the present application, all the inflow velocity vector components projected on the cross section parallel to the ground of the dividing wall distillation column 100 are the center points of the cross section.
- flow rate F means the flow rate (volume per unit time) flowing through each opening.
- FIG. 14 is a view exemplarily showing a dividing wall distillation column according to an embodiment of the present application.
- the dividing wall distillation column 100 may include a heater 200 for preheating the raw material F 1 .
- the heater 200 may be positioned at a front end of a portion into which the raw material of the dividing wall distillation column 100 flows, and may heat the raw material F 1 flowing into the dividing wall distillation column 100.
- the separation Wall Distillation Column 100 including the heater 200 may raise the temperature of the raw material (F 1), before the raw material (F 1) flowing into the separation Wall Distillation Column 100, the raw material It is possible to minimize the size of the distillation column used for purification while minimizing the loss of energy generated in the separation process (F 1 ).
- the raw material F 1 at a temperature of 20 to 40 ° C. may be heated to a temperature of 50 to 110 ° C., 60 to 100 ° C., or 70 to 90 ° C. in the heater 200.
- the preheated raw material F 1 may flow into the lower portion of the first region 110 of the dividing wall distillation column 100, and the components included in the raw material F 1 may flow in a first outlet flow according to boiling points. (F 2 ), the second outlet stream F 3 and the third outlet stream F 4 may be separated and discharged.
- pre-heating the raw material (F 1) through the heater 200.
- the heater 200 is a device capable of raising the temperature of the raw material (F 1 ) may use a variety of devices known in the art, can be appropriately selected according to the type and temperature of the raw material to be separated, but is particularly limited no.
- 15 is a view exemplarily illustrating the dividing wall distillation column 100 according to another embodiment of the present application.
- the dividing wall distillation column 100 may further include a first heat exchanger 300.
- the first heat exchanger 300 is located at the front end of the first condenser 102 of the dividing wall distillation column 100 to heat-exchange some or all of the raw material F 1 and the first effluent stream F 2 .
- the first heat exchanger 300 may be positioned to be directly or indirectly connected to a pipe through which the first outlet flow F 2 of the dividing wall distillation column 100 flows.
- the first heat exchanger 300 includes a first effluent stream (F 2) is thereby passing directly to the pipe, efficient heat exchange with the raw material (F 1) and a first effluent stream (F 2) You can.
- the first outflow stream F 2 passes through the first heat exchanger 300 and the first heat exchanger.
- the heat is supplied to the device 300.
- the first outflow stream F 2 flowing out of the dividing wall distillation column 100 may be refluxed to the dividing wall distillation column 100 at a relatively low temperature.
- the amount of heat condensing the first outflow stream F 2 flowing out from the upper portion of the first region 110 may be reduced. . Accordingly, by reducing the amount of cooling water used in the condensation process using the first condenser 102, the cost required for the condensation process can be reduced.
- the temperature of the raw material F 1 can be raised. Accordingly, the consumption amount of steam used in the reboiler 104 to heat a part of the third outflow stream F 4 flowing out from the dividing wall distillation column 100 to be returned to the lower portion of the third region 130. Can be reduced.
- the temperature of the raw material can be efficiently increased even with a small amount of thermal energy as compared with utilizing the sensible heat of the liquid. As such, by utilizing the waste heat that is discarded, the energy efficiency can be increased, and the compound can be separated with high purity while minimizing the size of the distillation column used for purification.
- the raw material F 1 at a temperature of 20 to 40 ° C. may be heated to a temperature of 50 to 110 ° C., 60 to 100 ° C., or 70 to 90 ° C. in the first heat exchanger 300, The preheated raw material F 1 may flow into the lower portion of the first region 110 of the dividing wall distillation column 100.
- the first effluent stream (F 2 ) of 80 to 115 °C heat exchanged with the raw material (F 1 ) is passed through the first condenser 102, and then condensed at 25 to 40 °C stored as a product or the separation wall type It may be refluxed to an upper portion of the first region 110 of the distillation column 100.
- 16 is a view showing the dividing wall distillation column 100 according to another embodiment of the present application by way of example.
- the dividing wall distillation column 100 may further include a second heat exchanger 400.
- the second heat exchanger 400 is positioned at the front end of the second condenser 103 of the dividing wall distillation column 100 to heat-exchange some or all of the raw material F 1 and the second effluent stream F 3 .
- the second heat exchanger 400 may be positioned to be directly or indirectly connected to a pipe through which the second outlet flow F 3 of the dividing wall distillation column 100 flows.
- the second heat exchanger 400, the second outlet flow (F 3) by being directly connected to the passing pipe, efficient heat exchange with the raw material (F 1) and the second outlet flow (F 3) You can.
- the second outflow stream F 3 passes through the second heat exchanger 400 and the second heat exchanger.
- the heat is supplied to the machine 400.
- the second outlet stream F 3 may be refluxed to the dividing wall distillation column 100 at a relatively low temperature.
- the temperature of the raw material F 1 is increased by heat exchange with part or all of the relatively high temperature of the second outflow stream F 3 . You can.
- the amount of cooling water used in the second condenser 103 and the steam used in the reboiler 104 may be reduced. . Detailed description thereof will be omitted since it is the same as described above.
- the raw material F 1 at a temperature of 20 to 40 ° C. may be heated to a temperature of 50 to 110 ° C., 60 to 120 ° C., or 90 to 110 ° C. in the second heat exchanger 400,
- the preheated raw material F 1 may flow into the lower portion of the first region 110 of the dividing wall distillation column 100.
- the second effluent stream F 3 of 100 to 130 ° C. which is heat-exchanged with the raw material F 1 , passes through the second condenser 103 and is then condensed at 40 to 95 ° C. to be stored as a product or the separation wall type. It may be refluxed to an upper portion of the second region 120 of the distillation column 100.
- the present application also relates to a separation method of raw materials, for example, the separation method may be performed by the distillation column 100 provided with the aforementioned separation wall.
- How to remove the raw material (F 1) of the present application involves the purification of the raw material (F 1) as a raw material for introducing (F 1).
- the above-mentioned “inflow” or “inflow” is used in the same sense as the inflow step below, and the “purification” or “purification” is used in the same meaning as the purification step below.
- the inflow step is performed by introducing the raw material (F 1 ) into the dividing wall distillation column (100).
- the raw material (F 1 ) flowing into the dividing wall distillation column 100 may include the compound of Formula 1, for example, butyl acrylate, methyl acrylate, methyl methacrylate, 2-ethylhexyl acrylate , Acrylic acid, ethylene glycol, butyl alcohol, methyl alcohol or isopropyl alcohol, preferably 2-ethylhexyl acrylate.
- Description of the raw material (F 1 ) is the same as described above, it will be omitted.
- the inflow phase of the raw material (F 1), the raw material (F 1) a, which is divided by the separating wall 101, the first region 110 and second region 120, a separating wall 101 is not a position It may be introduced into the dividing wall distillation column 100 divided into the third region 130, for example, may be introduced into the lower portion of the first region 110 of the dividing wall distillation column 100. Further, in the purification step, the raw material F 1 introduced into the dividing wall distillation column 100 is separated into a first outflow stream F 2 , a second outflow stream F 3 , and a third outflow stream F 4 . This step is to flow out.
- a relatively low boiling flow of the introduced raw material F 1 flows out from the upper portion of the first region 110 to the first outflow flow F 2 , and has a relatively high boiling point.
- the high boiling point flow may flow into the third region 130.
- the flow of the relatively low boiling middle boiling point component into the second region 120 is introduced into the third region 130, and the flow of the relatively high boiling point component is generated in the third region 130. May flow out to the third outflow stream F 4 .
- a relatively middle boiling point component of the flow introduced into the second region 120 may flow out of the second region 120 into the second outflow flow F 3 .
- the first outflow stream F 2 flowing out of the upper portion of the first region 110 of the dividing wall distillation column 100, the second outflow stream F 3 flowing out of the upper portion of the second region 120, and the third Detailed descriptions of the temperature and the reflux ratio of the third outflow stream F 4 flowing out of the region 130 are the same as described above with respect to the dividing wall distillation column 100, and thus will be omitted.
- the raw material (F 1 ) may further include preheating before flowing into the distillation column (100).
- preheating or “preheating” is used by the same meaning as a preheating step below.
- the preheating step is performed before the inflow step described above, and the raw material F 1 may be heated before entering the lower portion of the first region 110 of the dividing wall distillation column 100, and thus, the raw material F 1 . Minimize the energy loss caused by the separation process.
- the raw material F 1 flowing into the dividing wall distillation column 100 may be preheated using an external heat source.
- An exemplary preheating step may be to heat the raw material F 1 using the heater 200.
- the heater 200 by heating the raw material F 1 before the distillation column 100 is introduced using the heater 200, a part of the third outlet stream F 4 is refluxed to the lower portion of the third region 130.
- the amount of heat used in reboiler 104 to heat the flow can be reduced. Details of the heater 200 are the same as described above, and thus will be omitted.
- the preheating step uses a heat exchanger to flow out of the top of the first region 110 of the distillation column 100 and / or outflow from the top of the second region 120 of the distillation column 100.
- the flow may be to heat exchange with the raw material (F 1 ).
- the first outflow stream F 2 flowing out of the first region 110 of the distillation column 100 and / or the second outflow flowing out of the second region 120 of the distillation column 100.
- the stream F 3 is supplied with heat via the heat exchanger.
- the waste heat flowing out of the separation process of the raw material (F 1 ) it is possible to heat the low-temperature raw material (F 1 ) flowing into the distillation column 100, and minimize the energy loss generated during the separation process. .
- the first condenser 102 and the first outlet stream F 2 and the second outlet stream F 3 of the dividing wall distillation column 100 are respectively refluxed into the distillation column 100 before The amount of cooling water used in the second condenser 103 can be reduced.
- the consumption of heat used in the reboiler 104 to heat the part or all of the flow of the reflux to the lower portion of the third region 130 of the third outflow flow (F 4 ) of the dividing wall distillation column (100). Can be reduced.
- the temperature and the reflux ratio of the second outflow stream F 3 and the third outflow stream F 4 flowing out of the third region 130 are the same as those described in the dividing wall distillation column 100 described above. Omit them.
- the dividing wall distillation column 100 of the present application and the separation method using the same, it is possible to reduce the energy consumption and to improve the economics of the process by minimizing the size of the distillation column used for the purification of the raw materials.
- a substance to be separated for example, 2-ethylhexyl acrylate
- 2-ethylhexyl acrylate can be separated at high purity in the separation of a mixture of three or more components, and is separated and purified from the 2-ethylhexyl acrylate. Energy saving can be achieved in the process.
- FIG. 1 exemplarily shows a dividing wall distillation column according to an embodiment of the present application.
- 2 to 13 are views exemplarily showing a cross section parallel to the ground of the dividing wall distillation column according to one embodiment of the present application.
- FIG. 14 is a view exemplarily showing a cross section parallel to the ground of the dividing wall distillation column according to one embodiment of the present application.
- 15 and 16 exemplarily illustrate the dividing wall distillation column according to another embodiment of the present application.
- FIG. 17 is a view showing a general dividing wall distillation column used in Comparative Example 1.
- 2-ethylhexyl acrylate was prepared using the dividing wall distillation column of FIG. 1. Specifically, a raw material containing 2-ethylhexyl acrylate was introduced into a dividing wall distillation column to perform a separation process.
- the operating pressure of the upper portion of the first wall of the dividing wall distillation column is about 20 to 30 torr, the operating temperature is about 90 to 105 °C, the operating pressure of the upper portion of the second region is about 20 to 30 torr, the operating temperature is It was about 108 to 120 °C, the operating pressure of the lower portion of the third region is about 80 to 90 torr, the operating temperature was about 140 to 147 °C.
- the raw material inlet and the first upper reflux inlet are formed by two openings, and the two raw material inlets are located in 15 stages of the dividing wall distillation column having a theoretical stage of 60 stages.
- a separation process of the raw materials was carried out in the same manner as in Example 1, except that the dividing wall distillation column formed to be located at the first stage was used.
- the raw material inlet and the second upper reflux inlet are formed by two openings, and the two raw material inlets are located in 15 stages of the dividing wall distillation column having a theoretical stage of 60 stages, and the two second upper reflux inlet units are the dividing wall distillation column.
- a separation process of the raw materials was carried out in the same manner as in Example 1, except that the dividing wall distillation column formed to be located at the first stage was used.
- the raw material inlet and the third lower reflux inlet are formed by two openings, and the two raw material inlets are located at the 15th stage of the dividing wall distillation column having a theoretical stage of 60 stages, and the two third lower reflux inlet units are the dividing wall distillation column.
- a separation process of the raw materials was carried out in the same manner as in Example 1, except that a dividing wall distillation column formed to be located at 60 stages was used.
- the two raw material inlets are located at 15 stages of the dividing wall distillation column having a theoretical stage of 60 stages, and the two first top reflux inlets are located at the first stage of the dividing wall distillation column, and the two second top reflux inflows are performed.
- the part is located at the first stage of the dividing wall distillation column, and the third lower reflux inlet is located at the 60 stage of the dividing wall distillation column.
- the heater was installed so that the raw material of the dividing wall distillation column can be heated before supplying, it was purified in the same manner as in Example 1.
- the temperature of the raw material flowing into the lower portion of the first region of the dividing wall distillation column was set to about 70 to 90 °C.
- raw materials were separated using a dividing wall distillation column including a first heat exchanger. That is, in the same manner as in Example 1, except that the first effluent stream discharged from the upper portion of the first region of the dividing wall distillation column undergoes heat exchange with the raw material introduced into the dividing wall distillation column before passing through the first condenser. Thereby the raw material was purified. In this case, it set so that the temperature of the raw material which flows into the lower part of a 1st area might be about 70-90 degreeC.
- raw materials were separated using a dividing wall distillation column including a second heat exchanger. That is, in the same manner as in Example 1, except that the second outlet stream discharged from the upper portion of the second column of the dividing wall distillation column undergoes heat exchange with the raw material introduced into the dividing wall distillation column before passing through the second condenser. Thereby the raw material was purified. In this case, it set so that the temperature of the raw material which flows in into the lower part of a 1st area might be about 90-110 degreeC.
- 2-ethylhexyl acrylate was purified using a dividing wall distillation column in which the dividing wall was not in contact with the column top.
- the stream discharged from the column top region of the dividing wall distillation column is returned to the top of the dividing wall distillation column via a condenser, and the other part is produced as a product.
- the flow discharged from the column bottom region of the dividing wall distillation column was recirculated to the bottom of the dividing wall distillation column, and the other part was produced as a product.
- the reflux ratio of the overhead flow of the dividing wall distillation column was set to 2.5 to 5.5.
- 2-ethylhexyl acrylate was purified using a distillation apparatus connected to two distillation columns.
- the low-boiling stream and water from the top of the first distillation column pass through the condenser and part of it is returned to the first distillation column, the other part is produced as a product, and the flow from the bottom of the first distillation column is part of the first It was refluxed to the bottom region of the distillation column and the remaining part was introduced to the second distillation column.
- the mid-boiling stream exiting the top of the second distillation column is condensed using a condenser, partly refluxed to the top of the second distillation column, the other part is separated into the product, and the high-boiling stream exiting the bottom of the second distillation column Some were used to reflux back to the bottom region of the second distillation column.
- the reflux ratio of the overhead flow of the second distillation column was set to be 0.2 to 1.2.
- Example 2 Example 3
- Example 4 Example 5
- Example 6 The degree of drift ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
- the total amount of energy input in the purification process according to Examples 1 and 7 to 9 are respectively 0.91 Gcal / hr, 0.91 Gcal / hr, 0.84 Gcal / hr, 0.81 Gcal / hr, the purification process according to Comparative Example 1 Compared to 0.92 Gcal / hr, the total amount of energy consumed is significantly reduced. That is, when the 2-ethylhexyl acrylate is separated by the dividing wall distillation column according to the embodiment of the present application, energy savings up to 33% are shown as compared with the case of the comparative example.
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Abstract
Description
비교예 1 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 | 실시예 5 | 실시예 6 | |
편류현상의 발생 정도 | ○ | ○ | × | × | × | × | × |
비교예 1 | 비교예 2 | 실시예 1 | 실시예 7 | 실시예 8 | 실시예 9 | |
제품 순도 (중량%) | 99.95 | 99.95 | 99.96 | 99.96 | 99.96 | 99.96 |
제품 내 저비점 물질 함량 | 10 ppm | 10 ppm | 3 ppb | 3 ppb | 3 ppb | 3 ppb |
에너지 소비량 (Gcal/hr) | 0.92 | 1.2 | 0.91 | 0.91 | 0.84 | 0.81 |
Claims (30)
- 제 1 응축기, 제 2 응축기, 재비기, 및 분리벽이 구비된 증류탑을 포함하고,상기 분리벽은 상기 증류탑의 탑정과 맞닿아 있고 탑저와 이격되어 있으며,상기 증류탑은 상기 분리벽에 의하여 나누어지는 제 1 영역 및 제 2 영역과, 상기 분리벽이 위치하지 않으며 상기 제 1 영역 및 제 2 영역의 하단의 제 3 영역으로 구분되고,원료가 상기 제 1 영역으로 유입되고, 유입된 상기 원료는, 상기 제 1 영역의 상부에서 유출되는 제 1 유출 흐름; 상기 제 1 영역의 하부에서 유출되고, 상기 제 3 영역을 통과하여, 상기 제 2 영역으로 유입되며, 상기 제 2 영역의 상부에서 유출되는 제 2 유출 흐름; 및 상기 제 3 영역의 하부에서 유출되는 제 3 유출 흐름으로 분리되어 유출되며,상기 제 1 유출 흐름 및 상기 제 2 유출 흐름의 일부 또는 전부는 각각 제 1 응축기 및 제 2 응축기를 통과하여 상기 제 1 영역의 상부 및 상기 제 2 영역의 상부로 환류되고,상기 제 3 유출 흐름의 일부 또는 전부는 재비기를 통과하여 상기 제 3 영역의 하부로 환류되는 분리벽형 증류탑.
- 제 2 항에 있어서, 화학식 1의 화합물은 2-에틸헥실 아크릴레이트인 분리벽형 증류탑.
- 제 1 항에 있어서, 원료는 제 1 영역의 하부로 유입되는 분리벽형 증류탑.
- 제 1 항에 있어서, 제 1 영역 상부의 온도는 80 내지 115℃인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 1 영역의 환류비는 1 내지 10인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 2 영역 상부의 온도는 100 내지 130℃인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 2 영역의 환류비는 0.01 내지 5인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 3 영역 하부의 온도는 120 내지 160℃인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 3 영역의 환류비는 1 내지 30인 분리벽형 증류탑.
- 제 1 항에 있어서, 원료가 유입되기 전에 상기 원료를 예열하는 히터를 추가로 포함하는 분리벽형 증류탑.
- 제 1 항에 있어서, 제 1 응축기의 전단에 위치하며, 제 1 유출 흐름과 원료를 열교환시키는 제 1 열교환기를 추가로 포함하는 분리벽형 증류탑.
- 제 1 항에 있어서, 제 2 응축기의 전단에 위치하며, 제 2 유출 흐름과 원료를 열교환시키는 제 2 열교환기를 추가로 포함하는 분리벽형 증류탑.
- 제 11 항 내지 제 13 항 중의 어느 하나에 있어서, 원료는 50 내지 110℃의 온도로 제 1 영역으로 유입되는 분리벽형 증류탑.
- 제 2 항에 있어서, 제 2 유출 흐름 내의 화학식 1의 화합물의 함량이 99 중량% 이상인 분리벽형 증류탑.
- 제 1 항에 있어서, 제 1 영역은 원료 유입부, 제 1 상부 생성물 유출부 및 제 1 상부 환류 유입부를 포함하고, 제 2 영역은 제 2 상부 생성물 유출부 및 제 2 상부 환류 유입부를 포함하며, 제 3 영역은 제 3 하부 생성물 유출부 및 제 3 하부 환류 유입부를 포함하고,원료가 상기 원료 유입부로 유입되고, 제 1 유출 흐름은 상기 제 1 상부 생성물 유출부에서 유출되며, 제 2 유출 흐름은 상기 제 2 상부 생성물 유출부에서 유출되고, 제 3 유출 흐름은 상기 제 3 하부 생성물 유출부에서 유출되며,상기 제 1 유출 흐름의 일부 또는 전부는 상기 제 1 상부 환류 유입부로 유입되고, 상기 제 2 유출 흐름의 일부 또는 전부는 상기 제 2 상부 환류 유입부로 유입되며, 상기 제 3 유출 흐름의 일부 또는 전부는 제 3 하부 환류 유입부로 유입되고,상기 원료 유입부, 제 1 상부 환류 유입부, 제 2 상부 환류 유입부 및 제 3 하부 환류 유입부 중 하나 이상은 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되는 분리벽형 증류탑.
- 제 16 항에 있어서, 제 1 영역은 증류탑의 수평 단면적을 균등하게 나누는 2 이상의 제 1 소영역을 포함하고, 원료 유입부 및 제 1 상부 환류 유입부 중 하나 이상은 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되며, 상기 2 이상의 개구부는 상기 2 이상의 제 1 소영역에 각각 위치하고 있는 분리벽형 증류탑.
- 제 17 항에 있어서, 제 1 상부 환류 유입부는 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되며, 상기 2 이상의 개구부는 제 1 영역 내의 동일한 단에 위치하고 있는 분리벽형 증류탑.
- 제 17 항에 있어서, 원료 유입부는 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되며, 상기 2 이상의 개구부는 제 1 영역 내의 동일한 단에 위치하고 있는 분리벽형 증류탑.
- 제 16 항에 있어서, 제 2 영역은 증류탑의 수평 단면적을 균등하게 나누는 2 이상의 제 2 소영역을 포함하고, 제 2 상부 환류 유입부는 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되며, 상기 2 이상의 개구부는 상기 2 이상의 제 2 소영역에 각각 위치하고 있는 분리벽형 증류탑.
- 제 20 항에 있어서, 상기 2 이상의 개구부는 제 2 영역 내의 동일한 단에 위치하고 있는 분리벽형 증류탑.
- 제 16 항에 있어서, 제 3 영역은 증류탑의 수평 단면적을 균등하게 나누는 2 이상의 제 3 소영역을 포함하고, 제 3 하부 환류 유입부는 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되며, 상기 2 이상의 개구부는 상기 2 이상의 제 3 소영역에 각각 위치하고 있는 분리벽형 증류탑.
- 제 22 항에 있어서, 제 3 하부 환류 유입부는 서로 이격되어 위치하고 있는 2 이상의 개구부로 형성되고, 상기 2 이상의 개구부는 제 3 영역 내의 동일한 단에 위치하고 있는 분리벽형 증류탑.
- 응축기, 재비기, 및 증류탑의 탑정과 맞닿아 있고 탑저와 이격되어 있는 분리벽이 구비되는 증류탑을 포함하고, 상기 증류탑이 상기 분리벽에 의하여 나누어지는 제 1 영역 및 제 2 영역과, 상기 분리벽이 위치하지 않으며 상기 제 1 영역 및 제 2 영역의 하단의 제 3 영역으로 구분되는 제조장치의 상기 제 1 영역으로 원료를 유입하여 정제하는 것을 포함하는 분리방법.
- 제 25 항에 있어서, 화학식 1의 화합물은 2-에틸헥실 아크릴레이트인 제조방법.
- 제 24 항에 있어서, 원료를 증류탑으로 유입하기 전에 원료를 예열하는 것을 추가로 포함하는 분리방법.
- 제 27 항에 있어서, 히터를 사용하여 원료를 가열하는 분리방법.
- 제 27 항에 있어서, 증류탑의 제 1 영역 상부의 흐름을 열교환기를 사용하여 원료와 열교환시키는 분리방법.
- 제 27 항에 있어서, 증류탑의 제 2 영역 상부의 흐름을 열교환기를 사용하여 원료와 열교환시키는 분리방법.
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CN201480051770.7A CN105555379B (zh) | 2013-07-18 | 2014-07-18 | 分隔壁蒸馏塔 |
JP2016527942A JP2016530086A (ja) | 2013-07-18 | 2014-07-18 | 分離壁型蒸留塔 |
US14/905,245 US10384146B2 (en) | 2013-07-18 | 2014-07-18 | Divided wall distillation column |
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KR10-2014-0091328 | 2014-07-18 | ||
KR1020140091328A KR101583146B1 (ko) | 2013-07-18 | 2014-07-18 | 분리벽형 증류탑 |
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