CN214436602U - Novel rectifying tower is used in lactate preparation - Google Patents
Novel rectifying tower is used in lactate preparation Download PDFInfo
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- CN214436602U CN214436602U CN202023249852.4U CN202023249852U CN214436602U CN 214436602 U CN214436602 U CN 214436602U CN 202023249852 U CN202023249852 U CN 202023249852U CN 214436602 U CN214436602 U CN 214436602U
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Abstract
The utility model discloses a lactate preparation is with novel rectifying column, including dividing wall rectifying column divide wall rectifying column on one's body, be located divide wall rectifying column to be provided with on one's body and be located divide the side line sampling end of wall rectifying column division wall section tower upper segment, side line sampling end is being located through back flow and setting divide wall rectifying column lactic acid extraction pipe one side's the body on the back flow end fluid turn-on connection. The utility model discloses with the feed liquid of the wall rectifying column wall section tower upper segment at feed end place, extract partly and flow back to division board opposite side wall rectifying column in, reduce the backward flow of product in the top of the tower product and tower in the feed end distolateral to can improve the purity of product and tower bottom product in top of the tower product, the tower.
Description
Technical Field
The utility model relates to a lactate preparation facilities field, in particular to lactate preparation is with novel rectifying column.
Background
When the ternary miscible substances are subjected to rectification separation, the ternary miscible substances are generally subjected to fractionation at different temperatures according to different boiling points. However, when a plurality of substances having similar boiling points are fractionated, a dividing wall column is often used for the purpose of improving the purity. However, in the existing dividing-wall rectifying tower, a partition plate is usually arranged on the inner side of a tower body to divide the rectifying tower into two rectifying regions, which can be sufficiently dealt with for the rectifying separation of conventional ternary mutual solvents, but for azeotrope, more processing time needs to be consumed in order to obtain a product with higher purity, the produced liquid of a rectifying section contains more tower top products and tower bottom products, and the number of tower plates has to be increased in order to improve the separation effect of the rectifying section and the stripping section of the dividing-wall section.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a novel rectifying column is used in lactate preparation, with the partial wall rectifying column that the feed end was located in the feed liquid of the partial wall rectifying column partial wall section tower body upper segment partially extracted and flow back to division board opposite side partial wall rectifying column in, reduce among the top of the tower product and the tower product in the distolateral backward flow of feed end to can improve the purity of top of the tower product, product and tower bottom product in the tower.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the novel rectifying tower for preparing lactate comprises a dividing wall rectifying tower, wherein a side line collecting end which is positioned at the upper section of a dividing wall section tower body of the dividing wall rectifying tower is arranged on the tower body at one side of a feeding end of the dividing wall rectifying tower, and the side line collecting end is in fluid conduction connection with a backflow end arranged on the tower body at one side of a lactic acid collecting pipe of the dividing wall rectifying tower through a backflow pipe.
In the novel rectifying tower for preparing lactate, the reflux end is positioned below the lactic acid extraction pipe.
In the novel rectifying tower for preparing lactate, 2 or 3 tower plates are arranged between the reflux end and the lactic acid extraction pipe.
In the novel rectifying tower for preparing lactate, the partition plates comprise a first partition plate, a second partition plate and a transition plate, wherein the first partition plate is positioned above the second partition plate and is fixedly connected with the second partition plate through the transition plate; on the tower body located on one side of the feeding end of the dividing wall rectifying tower, the ratio of the cross section area of the tower body where the first partition plate is located to the cross section area of the tower body where the second partition plate is located is 1: 0.8-0.6.
The novel rectifying tower for preparing lactate is characterized in that the feeding ends comprise a first feeding end, a second feeding end and a third feeding end which are respectively in fluid conduction connection with the feeding pipe, and the lateral line collecting end, the first feeding end, the second feeding end and the third feeding end are arranged on the wall section tower body of the dividing wall rectifying tower from top to bottom once.
In the novel rectifying tower for preparing lactate, the first feed-end liquid outlet is located above the transition plate, and the second feed-end liquid outlet and the third feed-end liquid outlet are respectively located below the transition plate.
Above-mentioned novel rectifying column is used in lactate preparation, be provided with 3 ~ 5 column plates between first feed end liquid outlet and the second feed end liquid outlet.
The utility model has the advantages as follows:
1. a part of feed liquid of a rectifying section in a divided wall section tower body positioned on one side of a feeding end is extracted by using a side line material extracting method and flows back to the divided wall section tower body on the other side of a partition plate, so that the transfer of a mixture of a tower top product and a product in a tower (containing a part of a tower bottom product) is realized, the conversion of the tower top product in the feed liquid in a stripping section and the product in the tower from liquid to gas is facilitated, the separation of the tower top product and the product in the tower from the tower bottom product is facilitated, the purity of the tower bottom product is improved, and the purity of the tower top product and the product in the tower can also be improved.
2. The adoption of the feeding end side wall partition section with the wide upper part and the narrow lower part is beneficial to the separation of products at the top of the tower and products in the tower from products at the bottom of the tower, is beneficial to improving the purity of products at the bottom of the tower, and is particularly suitable for scenes that the products at the bottom of the tower are reaction products.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the novel rectifying tower for preparing lactate according to the present invention.
In the figure, 1-a dividing wall rectifying tower; 2-side line take-off end; 3-a reflux end; 4-a return pipe; 5-a first feed end; 6-a second feed end; 7-a third feed end; 8-feeding pipe; a 9-ethyl lactate production pipe; a condenser is used for extracting the 10-ethyl lactate; 11-ethyl lactate reflux pump; a 12-lactic acid production pipe; a condenser for extracting 13-lactic acid; 14-lactic acid reflux pump; a 15-ethanol production pipe; a condenser is used for extracting the 16-ethanol; 17-ethanol reflux pump; 18-a first divider plate; 19-a transition plate; 20-second divider plate.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, the utility model discloses novel rectifying column is used in lactate preparation, including dividing wall rectifying column 1 on dividing wall rectifying column 1 divides the wall section tower, be located be provided with on the body of the tower of the feed end one side of dividing wall rectifying column 1 and be located divide wall rectifying column 1 to divide the side line sampling end 2 of wall section tower upper segment, side line sampling end 2 is being located through back flow 4 and setting 3 fluid turn-on connections of back flow end on the body of the 12 one sides of branch wall rectifying column 1 lactic acid sampling pipe.
In order to improve the content of ethyl lactate in the rectified lactic acid, in this embodiment, the reflux end 3 is located below the lactic acid production pipe 12, and 3 trays are arranged between the reflux end 3 and the lactic acid production pipe 12.
In the present embodiment, in the dividing wall rectifying column 1, the partition plates include a first partition plate 18, a second partition plate 20 and a transition plate 19, the first partition plate 18 is located above the second partition plate 20 and is fixedly connected with the second partition plate 20 through the transition plate 19; on the column body located on the feed end side of the divided-wall rectifying column 1, the ratio of the cross-sectional area of the column body where the first dividing plate 18 is located to the cross-sectional area of the column body where the second dividing plate 20 is located is 4: 3. Due to the structure, the volume of the steam below the transition plate 19 expands when the steam rises above the transition plate 19, so that the steam below the transition plate 19 can enter the tower body above the transition plate 19 more, the lactic acid and the ethanol can be separated from the feed liquid, and the purity of the ethyl lactate can be improved.
The feed end comprises a first feed end 5, a second feed end 6 and a third feed end 7 which are respectively in fluid communication connection with a feed pipe 8, and the lateral line sampling end 2, the first feed end 5, the second feed end 6 and the third feed end 7 are arranged on the wall section tower body of the dividing wall rectifying tower 1 from top to bottom once. Wherein the liquid outlet of the first feeding end 5 is positioned above the transition plate 19, and the liquid outlet of the second feeding end 6 and the liquid outlet of the third feeding end 7 are respectively positioned below the transition plate 19; 3 tower plates are arranged between the liquid outlet of the first feeding end 5 and the liquid outlet of the second feeding end 6. The dispersed feeding can improve the efficiency of separating lactic acid from feed liquid, and can reduce the content of ethyl lactate in steam, thereby improving the purity and the output ratio of the ethyl lactate.
In the utility model, the ethanol extraction pipe 15 is in fluid conduction connection with the ethanol extraction condenser 16, and the ethanol extraction condenser 16 is in fluid conduction connection with the ethanol return pipe through the ethanol return pump 17; the lactic acid production pipe 12 is in fluid communication connection with a lactic acid production condenser 13, and the lactic acid production condenser 13 is in fluid communication connection with a lactic acid return pipe through a lactic acid return pump 14; the ethyl lactate production pipe 9 is in fluid communication connection with an ethyl lactate production condenser 10, and the ethyl lactate production condenser 10 is in fluid communication connection with an ethyl lactate return pipe through an ethyl lactate return pump 11.
And the feed liquid obtained after the reaction for preparing the ethyl lactate enters the wall dividing section tower body of the dividing wall rectifying tower 1 through the feed pipe 8, the first feed end 5, the second feed end 6 and the third feed end 7. A part of reflux liquid in the tower body upper section of which the dividing wall section is positioned on one side of the feeding end is extracted through the lateral line extracting end 2, and the part of reflux liquid is injected into the tower body on the other side of the separation plate through the reflux end 3, so that lactic acid and ethanol in the part of reflux liquid can be promoted to be changed into steam, and simultaneously, ethyl lactate originally positioned in the separation plate but not in the tower body on one side of the feeding end is condensed, and the extraction of the ethyl lactate is favorably improved.
In the tower body positioned on one side of the feeding end, the cross-sectional area of the tower body positioned on the plate section of the first partition plate 18 is larger than that of the tower body positioned on the plate section of the second partition plate 20, so that the gas partial pressure is changed by enlarging the gas flow cross-sectional area, and the conversion of the lactic acid and the ethanol in the reflux liquid from a liquid state to a gas state is facilitated, and the separation of the lactic acid, the ethanol and the ethyl lactate is facilitated. On the other hand, in the tower body positioned on the opposite side of the feeding end, the gas flow cross section area is reduced, so that the ethyl lactate and the lactic acid are condensed into liquid drops to flow back, and the separation of the ethanol from the lactic acid and the ethyl lactate is facilitated.
The above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and for those skilled in the art, other variations or changes in different forms can be made on the basis of the above descriptions, and all embodiments cannot be exhausted here, and all the obvious variations or changes introduced by the technical solution of the present invention are still in the scope of protection of the present invention.
Claims (7)
1. The utility model provides a lactate preparation is with novel rectifying column, includes dividing wall rectifying column (1), its characterized in that on dividing wall rectifying column (1) dividing wall section shaft, be located be provided with on the shaft of the feed end one side of dividing wall rectifying column (1) and be located lateral line sampling end (2) of dividing wall rectifying column (1) dividing wall section shaft upper segment, lateral line sampling end (2) are in through back flow (4) and the setting back flow end (3) fluid turn-on connection on being located the shaft of dividing wall rectifying column (1) lactic acid extraction pipe (12) one side.
2. The new rectification column for lactate production according to claim 1, characterized in that the reflux end (3) is located below the lactic acid production pipe (12).
3. The novel rectification column for lactate production according to claim 2, characterized in that there are 2 or 3 trays between the reflux end (3) and the lactic acid withdrawal pipe (12).
4. The novel rectifying column for lactate production according to any one of claims 1 to 3, wherein, in the dividing wall rectifying column (1), the partition plates comprise a first partition plate (18), a second partition plate (20) and a transition plate (19), and the first partition plate (18) is positioned above the second partition plate (20) and is fixedly connected with the second partition plate (20) through the transition plate (19); on the tower body positioned on the side of the feed end of the dividing wall rectifying tower (1), the ratio of the cross-sectional area of the tower body where the first dividing plate (18) is positioned to the cross-sectional area of the tower body where the second dividing plate (20) is positioned is 1: 0.8-0.6.
5. The novel rectification column for lactate production according to claim 4, characterized in that the feed ends comprise a first feed end (5), a second feed end (6) and a third feed end (7) which are respectively connected in fluid communication with a feed pipe (8), and the side draw end (2), the first feed end (5), the second feed end (6) and the third feed end (7) are arranged on the divided wall section body of the divided wall rectification column (1) from top to bottom once.
6. The new rectification column for lactate production according to claim 5, characterized in that the first feed end (5) liquid outlet is located above the transition plate (19), and the second feed end (6) liquid outlet and the third feed end (7) liquid outlet are located below the transition plate (19), respectively.
7. The novel rectification column for lactate production according to claim 6, characterized in that 3-5 trays are arranged between the first feed end (5) liquid outlet and the second feed end (6) liquid outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023249852.4U CN214436602U (en) | 2020-12-26 | 2020-12-26 | Novel rectifying tower is used in lactate preparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023249852.4U CN214436602U (en) | 2020-12-26 | 2020-12-26 | Novel rectifying tower is used in lactate preparation |
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| CN214436602U true CN214436602U (en) | 2021-10-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653087A (en) * | 2022-03-23 | 2022-06-24 | 北京泽华化学工程有限公司 | Partition wall tower |
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- 2020-12-26 CN CN202023249852.4U patent/CN214436602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114653087A (en) * | 2022-03-23 | 2022-06-24 | 北京泽华化学工程有限公司 | Partition wall tower |
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