WO2014073843A1 - 박막증류 및 단경로 증류의 순차적 조합을 이용한 고순도 무수당 알코올의 제조방법 - Google Patents
박막증류 및 단경로 증류의 순차적 조합을 이용한 고순도 무수당 알코올의 제조방법 Download PDFInfo
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- WO2014073843A1 WO2014073843A1 PCT/KR2013/009988 KR2013009988W WO2014073843A1 WO 2014073843 A1 WO2014073843 A1 WO 2014073843A1 KR 2013009988 W KR2013009988 W KR 2013009988W WO 2014073843 A1 WO2014073843 A1 WO 2014073843A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
- C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
- C07D493/04—Ortho-condensed systems
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/222—In rotating vessels; vessels with movable parts
- B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
- B01D1/225—In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
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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
- B01D3/009—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in combination with chemical reactions
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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
- B01D3/12—Molecular distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
- C07C31/26—Hexahydroxylic alcohols
Definitions
- the present invention relates to a technique for producing anhydrosugar alcohols using a hydrogenated sugar as a raw material, and more specifically, after converting to anhydrosugar alcohol by adding an acid to the hydrogenated sugar (eg, hexitol),
- the distillation reaction resultant is distilled in two or more stages by using a combination of a condenser external thin film evaporator and an internal condenser type short path evaporator.
- High purity anhydrosugar alcohols (particularly isosorbide, isomannide, isoidide, etc.) having an amount of sorbitol and sorbitan isomers of less than 0.1% in high distillation yield of 94% or more (more preferably 95% or more) It relates to a technology that can be produced.
- Hydrogenated sugar means a compound obtained by adding hydrogen to a reducing end group of a saccharide, and generally HOCH 2 (CHOH) n CH 2 OH, where n is an integer of 2 to 5 ) And are classified according to carbon number to trititol, pentitol, hexitol and heptitol (4, 5, 6 and 7 carbon atoms, respectively).
- hexitol having 6 carbon atoms includes sorbitol, mannitol, iditol, galactitol and the like, and sorbitol and mannitol are particularly useful substances.
- Anhydrosugar alcohols have a diol form having two hydroxyl groups in the molecule, and may be prepared using hexitol derived from starch (eg, Korean Patent No. 10-1079518, Korean Patent Publication No. 10). -2012-0066904).
- Anhydrosugar alcohols have been studied for a long time with a great deal of interest in that they are environmentally friendly materials derived from renewable natural resources.
- isosorbide made from sorbitol has the widest range of industrial applications at present.
- anhydrosugar alcohols is very diverse, such as treatment of heart and vascular diseases, adhesives of patches, mouthwashes and the like, solvents of the composition in the cosmetic industry, emulsifiers in the food industry.
- it can also be used as an environmentally friendly solvent of adhesives, environmentally friendly plasticizers, biodegradable polymers, water-soluble lacquer.
- anhydrosugar alcohols are receiving a lot of attention due to their various applicability, and their use in actual industries is also gradually increasing.
- the existing anhydrosugar alcohol manufacturing method has a high cost of the catalyst used in the dehydration reaction, and has a low conversion rate, distillation and purification yield.
- a simple distillation technique in which a distillation of anhydrosugar alcohol is carried out under reduced pressure immediately in a reactor after batch distillation or a conversion reaction.
- Batch distillation or simple distillation has a disadvantage in that it is difficult to economically produce on a commercial scale due to a long distillation time.
- distillation of the conversion reaction liquid at a low temperature takes a long time distillation, when distilling at a relatively high temperature (for example 170 °C or more), distillation time is shortened, but anhydrous sugars
- the alcohol is pyrolyzed at a temperature of 170 ° C. or higher to generate by-products such as formic acid and furfural, resulting in lower purity and lower pH of the distillate.
- the residence time of the distillate is relatively long, and the distillation should be performed at a higher temperature than the thin film distillation method described later, thereby causing thermal decomposition of the anhydrosugar alcohol to lower the purity and yield of the distillate.
- additives must be used to prevent such pyrolysis.
- an anhydrosugar alcohol such as isosorbide is thermally decomposed at a distillation temperature of 170 ° C or higher, and as a result, distillation yield and distillation purity are lowered.
- the purity of the single-step distillation in the US patent was 97.1% and distillation yield was 80%, but this degree of purity and yield is still unsuitable for commercial scale large scale production processes.
- anhydrosugar alcohols of high purity e.g., 98% or higher
- impurities of sorbitol and sorbitan isomers of less than 0.1% can be provided in high total distillation yield (e.g., 94% or more, more preferably 95% or more).
- Anhydrous sugar alcohol manufacturing technology is required.
- An object of the present invention is to solve the above-mentioned problems of the prior art, it is possible to produce a high purity distillation yield of 94% or more of anhydrosugar alcohol having a high purity of more than 98% and impurities sorbitol and sorbitan isomer content of less than 0.1% In other words, it is a technical problem to provide a method for producing anhydrosugar alcohol which can achieve high purity and high yield at the same time.
- the present invention to solve the above technical problem, the step of dehydrating the hydrogenated sugar to anhydrosugar alcohol; And distilling the resultant of the conversion step in two or more stages by using a combination of a condenser external thin film evaporator and an internal condenser type short path evaporator. It provides a method for producing anhydrosugar alcohols comprising a.
- the condenser built-in short path distiller includes a built-in condenser, raw material input line, distillation residue discharge line, vacuum line and distillate discharge line.
- the inside of the distiller is further depressurized through the distillation residue discharge line together with the decompression through the vacuum line.
- an anhydrosugar alcohol having a high purity of 98% or more and impurities of sorbitol and sorbitan isomer content of less than 0.1% can be easily produced in high yield (total distillation yield of 94% or more, more preferably 95% or more). have.
- FIG. 1 is a view schematically showing a preferred embodiment of the condenser built-in short-path distiller structure usable in the anhydrosugar alcohol production method of the present invention.
- the method for producing anhydrosugar alcohols of the present invention includes the step of converting the hydrogenated sugars to anhydrosugar alcohols.
- the hydrogenated sugar is generally called a sugar alcohol, and means a compound obtained by adding hydrogen to a reducing end group of the sugar.
- Hydrogenated sugars are classified according to carbon number into tetratritol, pentitol, hexitol and heptitol (4, 5, 6 and 7 carbon atoms, respectively).
- hexitol having 6 carbon atoms includes sorbitol, mannitol, iditol, galactitol and the like, and sorbitol and mannitol are particularly useful substances.
- anhydrosugar alcohol means any substance obtained by removing one or more water molecules from the original internal structure of the hydrogenated sugar (or sugar alcohol) in one or more steps in any manner.
- hexitol is preferably used as the hydrogenated sugar, more preferably hydrogenated sugar selected from sorbitol, mannitol, iditol and mixtures thereof.
- dianhydrohexitol which is a dehydration product of hexitol is preferably obtained as the anhydrosugar alcohol, and more preferably isosorbide (1,4-3,6-dianhydrosorbitol), iso Anhydrosugar alcohols selected from mannide (1,4-3,6-dianhydromannitol), isoidide (1,4-3,6-dianhydroiditol) and mixtures thereof are obtained.
- isosorbide is particularly high in industrial and medical applications.
- the hydrogenated sugar is converted to anhydrosugar alcohol by dehydration reaction.
- dehydration reaction There is no particular limitation on the method of dehydrating hydrogenated sugars, and known methods known in the art may be used as they are or as appropriately modified.
- An acid catalyst is preferably used to dehydrate the hydrogenated sugar and convert it into anhydrosugar alcohol, more preferably a mixed acid of the first acid and the second acid can be used.
- the acid catalyst sulfuric acid, hydrochloric acid, phosphoric acid, etc. may be used in the case of a single acid catalyst, and sulfuric acid as the first acid in the case of mixed acid, p-toluene sulfonic acid, methane sulfonic acid, ethane sulfonic acid, benzene as the second acid.
- One or more sulfur-containing acid salts selected from the group consisting of sulfonic acid, naphthalene sulfonic acid and aluminum sulfate can be used.
- the amount of acid catalyst used is preferably 0.5 to 10 parts by weight per 100 parts by weight of hydrogenated sugar (eg, hexitol). If the amount of the acid catalyst is too small than this range, the conversion time to anhydrosugar alcohol may be too long, while if the amount of the acid catalyst is too large than this range, there is a problem that the production of saccharide polymer is increased and the conversion rate is lowered. have.
- the step of converting the hydrogenated sugars into anhydrosugar alcohols is carried out in the presence of an acid catalyst as described above at a temperature of 105 to 200 ° C. (more preferably 110 to 150 ° C.) and 1 to 100 mm Hg. It may be performed for 1 to 10 hours (more preferably 2 to 5 hours) under pressure conditions (more preferably 1 to 50mmHg), but is not necessarily limited thereto.
- the reaction resultant is preferably neutralized. Neutralization may be carried out after the dehydration reaction is completed by lowering the reaction resultant temperature (eg, 100 ° C. or lower) and adding a known alkali such as sodium hydroxide.
- the pH of the neutralized reaction resultant is preferably 6-8.
- the resultant liquid conversion step of the hydrogenated sugars to anhydrosugar alcohols may be pretreated before input to the initial distillation step.
- This pretreatment is intended to remove moisture and low-boiling substances remaining in the conversion step resultant liquid.
- the pre-treatment step is performed for 1 hour or more (eg, at a temperature of 90 ° C. to 110 ° C. and a pressure of 10 mmHg to 100 mmHg). , 1 to 4 hours) may be performed by stirring, but is not limited thereto.
- the resultant solution of the hydrogenated sugar conversion to anhydrosugar alcohol was performed by using a combination of an external condenser type thin film distiller and an internal condenser type short path evaporator. More than one distillation.
- wiped film distillation refers to distillation carried out using a conventional "wiped film evaporator (external condenser type)" as disclosed, for example, in US Pat. No. 7,439,352. This is a distinction from “short path distillation” which is subsequently performed. In short path distillation, a “short path evaporator (internal condenser type) as shown in FIG. It is characterized by using. The term “short path distillation” is also a different concept from “simple distillation” where distillation is performed without the formation of a thin film.
- the two-stage or three-stage distillation is appropriate, in the case of two-stage distillation, thin film distillation-short path distillation in the case of two-stage distillation, and in the case of three-stage distillation
- Thin film distillation-short path distillation-short path distillation may be performed in the order of, but is not limited thereto, and any combination thereof may be used as long as short path distillation is performed after thin film distillation.
- the condenser built-in short path distillator as shown in FIG. 1 when the condenser built-in short path distillator as shown in FIG. 1 is used, the desired high purity and high yield are simultaneously achieved by only two-stage distillation of thin film distillation-short path distillation. can do.
- the two-stage distillation is preferably made in a continuous form, where the continuous does not mean that two or more distillers are connected and treated without disconnection in time, even if there is a disconnection in time using one distillation machine.
- after distillation is a concept that includes the following distillation treatment without any other treatment.
- the built-in short path distillator 1 includes a built-in condenser 5, a raw material input line 6, a distillation residue discharge line 7, a vacuum forming side line 7-1, and a vacuum line 8. ) And a distillate discharge line (9), as well as a heating jacket (2), a wiper (3), a condenser guard (4) and a coolant inlet / outlet line (10 and 11, respectively) for heating. It includes.
- the condenser built-in short path distiller usable in the present invention is not limited to that of the structure shown in FIG. 1 (for example, the vacuum forming side line 7-1 can be omitted), and in addition to the above-described components, It may further include components, and their shapes may vary.
- condenser external thin film distillation apparatus that can be used in the method for producing anhydrosugar alcohols of the present invention.
- a suitable condenser external thin film distillation apparatus including those disclosed in US Pat. No. 7,439,352 can be selected and used.
- Distillation using a condenser external thin film distillation may be carried out effectively under temperature conditions of preferably 120 to 250 ° C, more preferably 120 to 220 ° C, even more preferably 150 to 200 ° C. If the distillation temperature is less than 120 °C when using the condenser external thin film distillation may not be effective distillation of the anhydrosugar alcohol.
- the distillation pressure condition (in the distillator) when using the condenser external thin film distillator is preferably 10 mmHg or less (e.g., 0.0001 to 10 mmHg, more specifically 0.0001 to 8 mmHg), and 5 mmHg or less (e.g., , 0.001 to 5 mmHg), more preferably 3 mmHg or less (eg, 0.01 to 3 mmHg, more specifically 0.01 to 2 mmHg).
- the distillation pressure is higher than 10 mmHg, in order to distill the anhydrosugar alcohol, the distillation temperature must be increased, in which case the above problems may occur.
- too low a distillation pressure is undesirable because a high vacuum device costs additionally to lower the distillation pressure.
- Distillation using a condenser built-in short path distillation may be performed effectively under temperature conditions of preferably 100 to 250 ° C, more preferably 100 to 200 ° C, even more preferably 110 to 170 ° C. If the distillation temperature is less than 100 °C when using a built-in condenser short path distillation may not be effective distillation of the anhydrosugar alcohol.
- the distillation pressure condition (in the distillator) when using a short path distillator built-in condenser is preferably 10 mmHg or less (eg, 0.0001 to 10 mmHg, more specifically 0.0001 to 8 mmHg), and 5 mmHg or less ( For example, it is more preferable that it is 0.001-5 mmHg, and it is still more preferable that it is 1 mmHg or less (for example, 0.01-1 mmHg, more specifically 0.01-0.8 mmHg).
- the distillation pressure is higher than 10 mmHg, in order to distill the anhydrosugar alcohol, the distillation temperature must be increased, in which case the above problems may occur.
- too low a distillation pressure is undesirable because a high vacuum device costs additionally to lower the distillation pressure.
- a vacuum pump connected to a vacuum line may also be connected to the vacuum forming side line of the residue discharge line so that the same degree of vacuum is applied to the distillation residue discharge line and the vacuum line, or alternatively to the vacuum formation of the distillation residue discharge line.
- a separate vacuum pump can be connected to the branch line to allow the degree of vacuum to be applied independently of the vacuum line.
- the flow of the distillation residue is disturbed because the pressure in the distillation residue discharge line 7 is higher than the inside and outside of the condenser guard 4.
- the method for producing anhydrosugar alcohol of the present invention further includes, after the two or more distillation steps, performing a post-treatment selected from crystallization, adsorbent treatment, ion purification, and a combination thereof for the anhydrosugar alcohol, which is a distillation product. It may include.
- the crystallization may be performed by a crystallization method using a solvent (eg, acetone solvent) or may be performed by a melt crystallization method using no solvent.
- a solvent eg, acetone solvent
- the adsorbent treatment is for decolorization, and may be performed according to a conventional adsorbent treatment method using a known adsorbent such as activated carbon.
- a known adsorbent such as activated carbon.
- the activated carbon one or more selected from the group of activated carbons obtained by activating plant-based raw materials such as wood and palm, and mineral-based raw materials such as lignite, bituminous coal, bituminous coal and anthracite coal can be used.
- the ion tablets are for removing ions that may be present in the anhydrosugar alcohol, and are selected from the group of strong cationic, weak cationic, strong anionic and weak anionic ion exchange resins according to the kind of ions that may be present. It may be carried out one or more times using one or more.
- the conversion reaction solution is distilled two-stage in the order of thin film distillation-short path distillation, purity 98% or more, sorbitol as an impurity And a high purity anhydrosugar alcohol having a sorbitan isomer content of less than 0.1% (more preferably, less than 0.05%) and improved in pale yellow color with a distillation yield of at least 94% (more preferably, 95%). Or more), and then white isosorbide can be obtained by further proceeding with crystallization, decolorization with an adsorbent, and ion purification.
- the temperature of the neutralized resultant solution was adjusted to 100 ° C., and then concentrated for at least 1 hour under reduced pressure of 40 mmHg or less to remove moisture and low boiling point material present in the resultant solution.
- the conversion rate of sorbitol was 74%, and the content of sorbitan and sorbitan isomer was 1% by weight, and the content of the other polymer was 15%.
- the conversion resultant solution which has been neutralized and removed from water, was introduced into a condenser external thin film distillator and subjected to a first stage distillation under conditions of a distillation temperature of 185 ° C. and an internal pressure of 1.3 mmHg. Subsequently, the distillate from the one-step distillation was introduced into a condenser built-in short path distillator having the structure shown in FIG. 1, and second stage distillation was carried out under conditions of a distillation temperature of 146 ° C. and an internal pressure of 1.3 mmHg. At this time, in addition to the vacuum line, the vacuum pump was additionally connected to the vacuum line of the distillation residue discharge line to perform distillation.
- the purity of isosorbide obtained through two-stage distillation was 98.2%, the color was pale yellow, and the distillation yield was 95% or more (about 95.2%).
- the total content of sorbitol and sorbitan isomers was less than 0.05% (about 0.048%).
- Example 1 The conversion resultant obtained in Example 1, which has been neutralized and removed from water, was introduced into a condenser external thin film distillator and subjected to a first stage distillation under conditions of a distillation temperature of 185 ° C. and an internal pressure of 1.3 mmHg. Subsequently, the distillate as a result of the one-stage distillation was introduced into a condenser built-in short path distillator having the structure shown in FIG. 1, and the second stage distillation was carried out under the condition of a distillation temperature of 100 ° C. and an internal pressure of 0.01 mmHg. At this time, in addition to the vacuum line, the vacuum pump was additionally connected to the vacuum line of the distillation residue discharge line to perform distillation.
- the purity of isosorbide obtained through two-stage distillation was 98.2%, the color was pale yellow, and the distillation yield was 95% or more (about 95.2%).
- the total content of sorbitol and sorbitan isomers was less than 0.05% (about 0.048%).
- Example 1 The conversion resultant obtained in Example 1, which has been neutralized and removed from water, was introduced into a condenser external thin film distillator and subjected to a first stage distillation under conditions of a distillation temperature of 185 ° C. and an internal pressure of 1.3 mmHg. Subsequently, the distillate as a result of the one-stage distillation was introduced into a condenser built-in short path distillator having the structure shown in FIG. At this time, in addition to the vacuum line, the vacuum pump was additionally connected to the vacuum line of the distillation residue discharge line to perform distillation.
- the purity of isosorbide obtained through two-stage distillation was 98.2%, the color was pale yellow, and the distillation yield was 95% or more (about 95.2%).
- the total content of sorbitol and sorbitan isomers was less than 0.05% (about 0.048%).
- Example 2 The conversion resultant obtained in Example 1, which has been neutralized and removed from water, was introduced into a condenser external thin film distillator and subjected to a first stage distillation under conditions of a distillation temperature of 185 ° C and a distillator internal pressure of 2.0 mmHg. Subsequently, as a result of the one-step distillation, the distillate was put back into the same condenser external thin film distillation, and the second stage distillation was performed under the conditions of the distillation temperature of 180 ° C. and the internal pressure of the distillator of 2.0 mmHg. Purity of isosorbide obtained through two-stage distillation was 96.1%, distillation yield 94%.
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Claims (13)
- 수소화 당을 탈수 반응시켜 무수당 알코올로 전환시키는 단계; 및상기 전환 단계의 결과액을, 응축기 외장형 박막증류기 및 응축기 내장형 단경로 증류기를 순차적으로 조합 사용하여 2단 이상 증류하는 단계;를 포함하는,무수당 알코올의 제조방법.
- 제1항에 있어서, 응축기 내장형 단경로 증류기가 내장형 응축기, 원료 투입라인, 증류 잔여물 배출 라인, 진공 라인 및 증류물 배출 라인을 포함하는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제2항에 있어서, 응축기 내장형 단경로 증류기를 사용한 증류의 수행시 증류기 내부가 진공 라인을 통한 감압과 함께 증류 잔여물 배출 라인을 통하여 추가로 감압되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제2항에 있어서, 응축기 내장형 단경로 증류기를 사용한 증류의 수행시 진공 라인의 진공도와 증류 잔여물 배출 라인의 진공도가 동일한 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 수소화 당이 헥시톨이며, 무수당 알코올이 디언하이드로헥시톨인 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 수소화 당을 탈수시켜 무수당 알코올로 전환하는 단계에서 산 촉매가 사용되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 수소화 당의 무수당 알코올로의 전환 단계 결과액이, 최초 증류 단계 투입 전에 수분 및 비점이 낮은 물질을 제거하기 위하여 전처리되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 응축기 외장형 박막증류기를 사용한 증류가 120~250℃의 온도 조건 하에서 수행되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 응축기 외장형 박막증류기를 사용한 증류가 10 mmHg 이하의 압력 조건 하에서 수행되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 응축기 내장형 단경로 증류기를 사용한 증류가 100~250℃의 온도 조건 하에서 수행되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항에 있어서, 응축기 내장형 단경로 증류기를 사용한 증류가 10 mmHg 이하의 압력 조건 하에서 수행되는 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항 내지 제11항 중 어느 한 항에 있어서, 2단 이상 증류후 증류액의 무수당 알코올 순도가 98% 이상이고, 불순물인 소르비톨 및 소르비탄 이성질체 함량이 0.1% 미만이며, 증류 수율이 94% 이상인 것을 특징으로 하는 무수당 알코올의 제조방법.
- 제1항 내지 제11항 중 어느 한 항에 있어서, 2단 이상 증류 단계 이후에, 증류 결과물인 무수당 알코올에 대하여 결정화, 흡착제 처리, 이온정제 및 이들의 조합으로부터 선택되는 후처리를 수행하는 단계를 추가로 포함하는 것을 특징으로 하는 무수당 알코올의 제조방법.
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US14/441,406 US9169263B1 (en) | 2012-11-08 | 2013-11-06 | Method for preparing high-purity anhydrosugar alcohol using sequential combination of thin film distillation and short path distillation |
CN201380058429.XA CN104768908B (zh) | 2012-11-08 | 2013-11-06 | 依次组合利用薄膜蒸馏及短程蒸馏的高纯度无水糖醇的制备方法 |
EP13854039.8A EP2918573B1 (en) | 2012-11-08 | 2013-11-06 | Method for preparing high-purity anhydrosugar alcohol using sequential combination of thin film distillation and short path distillation |
JP2015541681A JP6122504B2 (ja) | 2012-11-08 | 2013-11-06 | 薄膜蒸留と短行程蒸留を順に組み合わせて用いた高純度無水糖アルコールの製造方法 |
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CN105194897A (zh) * | 2015-10-12 | 2015-12-30 | 无锡市惠山合力传热设备厂 | 一种分馏传热设备 |
WO2016137833A1 (en) | 2015-02-24 | 2016-09-01 | Archer Daniel Midland Company | Isoidide manufacture and purification |
WO2017158303A1 (fr) | 2016-03-16 | 2017-09-21 | Roquette Freres | Procede de fabrication de dianhydrohexitol avec une etape de distillation sur un evaporateur a couche mince |
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KR102299182B1 (ko) * | 2014-10-16 | 2021-09-08 | 에스케이이노베이션 주식회사 | 고압 반응에 의한 무수당 알코올의 제조방법 |
US10752638B2 (en) | 2014-10-16 | 2020-08-25 | Sk Innovation Co., Ltd. | Method for producing anhydrosugar alcohol by high-pressure reaction |
PL428853A1 (pl) * | 2016-08-10 | 2020-06-15 | Stanislav Veniaminovich Savinskyi | Sposób rafinacji rektyfikowanego alkoholu i urządzenie do jego realizacji |
CN107513018B (zh) * | 2017-08-29 | 2020-09-29 | 山东清水化工有限公司 | 一种烯丙基二甘醇碳酸酯及其制备方法 |
CN113577810A (zh) * | 2021-06-24 | 2021-11-02 | 安徽佳先功能助剂股份有限公司 | 二苯甲酰甲烷生产的浓缩结晶用高真空分子蒸馏装置 |
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US20150307511A1 (en) | 2015-10-29 |
CN104768908B (zh) | 2016-10-19 |
EP2918573B1 (en) | 2017-07-12 |
EP2918573A4 (en) | 2016-03-30 |
CN104768908A (zh) | 2015-07-08 |
JP2015535301A (ja) | 2015-12-10 |
JP6122504B2 (ja) | 2017-04-26 |
KR20140059902A (ko) | 2014-05-19 |
US9169263B1 (en) | 2015-10-27 |
EP2918573A1 (en) | 2015-09-16 |
KR101435640B1 (ko) | 2014-08-29 |
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