CN109762156A - A kind of deodorizing methods in esters synthesis - Google Patents
A kind of deodorizing methods in esters synthesis Download PDFInfo
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- CN109762156A CN109762156A CN201811636741.3A CN201811636741A CN109762156A CN 109762156 A CN109762156 A CN 109762156A CN 201811636741 A CN201811636741 A CN 201811636741A CN 109762156 A CN109762156 A CN 109762156A
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Abstract
The present invention provides the deodorizing methods in a kind of synthesis of esters, which comprises the following steps: the synthetic reaction of S1. progress polyglycerol ester in reaction kettle using temperature-gradient method by the way of；S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06-0.099MPa；S3. exhaust phase passes through riser exhaust and recovery section material；In step S3, offending smell is removed by the column plate group being arranged in riser.The present invention solves the unhappy smell that polyglycerol ester generates in process of production, has protection to a certain extent to environment and human body personal safety；It solves the distillate progress object that polyglycerol ester distills out in the synthesis process to recycle, reduces the discharge of water consumption and water.
Description
Technical field
The invention belongs to chemical industry processing technology fields, and in particular to the deodorizing methods in a kind of synthesis of esters.
Background technique
Polyglyceryl fatty acid ester abbreviation polyglycerol ester is that one kind is novel, efficient, function admirable polyhydroxy esters are non-ionic
Surfactant.Since they have the multiple surface property such as good emulsification, dispersion, wetting, stable, in body metabolism mistake
It can decompose in journey, to participate in being metabolized, be immediately used by the body, there is tight security, application field is very extensive.Especially in food
In industry, for food hygiene and safety increasingly by today concerned by people, developing nontoxic, environment-friendly type surfactant becomes food
Important content in additive agent field research, polyglyceryl fatty acid ester just belongs to additive a kind of in this way, with its brilliant safety
Property and excellent surface-active are accepted by people.FDA/WHO Expert C-on Food Additive has been acknowledged more than 30 kinds of polies
Fatty acid glyceride food emulsifying agent, the approveds polyglyceryl fatty acid ester such as the U.S., Japan, Europe, China are emulsified as food
Agent.It has also been widely used the various fields such as pharmaceutical products, daily-use chemical industry and material additive simultaneously.With other polyhydroxy base class
Aliphatic ester is compared, it not only has very strong salt tolerant, acidproof and temperature capacity, and surface application performance also belongs to wherein
Outstanding person.Polyglyceryl fatty acid ester is a kind of surfactant of safety and environmental protection, has very wide HLB because of the difference of structure
Distribution value, thus application range is very wide.Existing polyglycerol ester preparation process is usually carried out in two steps: the first step, glycerol acetonide
Conjunction or glyceride and glycerol addition reaction prepare polyglycereol；Second step polyglycereol by with fatty acid carry out direct esterification reaction,
This is a kind of method most widely used on present industrial, or carries out ester exchange reaction with triglycerides, obtains corresponding polyglycerol ester.
The crucial production in polyglycereol of the production of polyglycerol ester, polyglycereol polymerization need to carry out at high temperature, with the degree of polymerization of polyglycereol
Bigger, reaction time consumption constantly lengthens, and the color of product is constantly deepened, while with serious side reaction, leading to polymerizate gas
Taste aggravates.The production of current polyglycerol ester is unavoidable, and to be that polyglycerol ester can generate during high―temperature nuclei offending
Smell has seriously affected the application and popularization of polyglycerol ester.Therefore, production technology is improved, improving product quality has important meaning
Justice, while also contributing to pushing the development in the other applications fields such as food, medicine, cosmetics.
Summary of the invention
In view of this, the present invention provides the deodorizing methods in a kind of synthesis of esters, the present invention solves polyglycerol ester in life
The unhappy smell generated during producing, has protection to a certain extent to environment and human body personal safety；Solve gather it is sweet
The distillate that grease distills out in the synthesis process carries out object and recycles, and reduces the discharge of water consumption and water.
The technical solution of the present invention is as follows:
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06-0.099MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S2, the vacuum degree is -0.01-0.06MPa.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 50-105 DEG C, basic catalyst is added, stirring is warming up to 80-180 DEG C, and fatty acid response is added at 60-130 DEG C in temperature,
It is warming up at 180-230 DEG C and is kept for 0.5-1 hours, then slowly promote temperature to 240-298 DEG C of progress fast reaction, adjust anti-
Answer the vacuum degree inside kettle for -0.08-0.099MPa, reaction was completed after metering generation water to the 80% of predetermined value, keeps reaction
240-298 DEG C of temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body, and the central area of the tube body is equipped with support column, the support column in
Tubular body is symmetrically arranged with column plate group.
Further, the column plate group includes the first column plate, the second column plate, and first column plate is staggeredly set with the second column plate
It sets.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove, described
Mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole, and first column plate is hollow structure, first tower
Intralamellar part is equipped with adsorption layer.
Further, the adsorption layer is active carbon layer or molecular sieve layer.Particularly, the adsorption layer material inside the column plate
Material reuses after can activating, and is good for the environment.
Further, the molecular sieve layer is adopted as A type molecular sieve, Y type molecular sieve or X type molecular sieve.Preferably,
The molecular sieve is A type molecular sieve.In the present invention, the active carbon layer or molecular sieve layer of use limited can be reused,
Detergent power is strong, good purification.
Further, second column plate is consistent with the first tower plate structure.
Particularly, the riser top is connected with vacuum pipe.
Riser in the present invention can make substance, moisture, volatilization of the boiling point at 100-800 DEG C after column plate separates
Property gas be discharged through the vacuum pipe on riser top, and boiling point stays in reaction kettle as far as possible in 800-2000 DEG C of substance.
Particularly, heretofore described basic catalyst, active carbon layer, molecular sieve layer can pass through any prior art reality
It is existing.
In the present invention, temperature-gradient method is first used in polyglycerol ester synthesis, it is possible to reduce material coking uses high vacuum afterwards
Remove the smell that partial material coking generates.Since high vacuum can take away a part of material, separated by column plate group in riser,
Using the boiling-point difference of substance, recycling quilt can be carried out by increasing the contact area of column plate group and steam and the length of riser
The partial material that vacuum is taken away；In the present invention by using active carbon layer/molecular sieve layer adsorption treatment after, solve polyglycerol ester
The unhappy smell generated in synthesis process.The present invention is Promethean to use tower in polyglycerol ester in process of production reaction kettle
The adsorption layer being arranged in plate isolation technics and column plate organically combines, and can either achieve the purpose that the offending smell of removal, simultaneously
The distillate distilled out can be effectively recycled, good technological effect can be reached.
For present inventor by a large amount of creative tests, the phase after the reaction that obtains adjusts the vacuum degree inside reaction kettle
The generation that malodorous elements in product can effectively be controlled, reaches good deodorizing effect.
The beneficial effects of the present invention are:
1. solving the unhappy smell that polyglycerol ester generates in process of production, have centainly to environment and human body personal safety
Protection in degree；
It is recycled 2. solving the distillate that polyglycerol ester distills out in the synthesis process and carrying out object, reduces water consumption and water
Discharge.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of riser of the invention；
Fig. 2 is the partial structural diagram of riser of the invention；
Fig. 3 is the partial structural diagram of riser of the invention；
Fig. 4 is the partial structural diagram of riser of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06-0.099MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S2, the vacuum degree is -0.01MPa.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 50 DEG C, basic catalyst is added, stirring is warming up to 80 DEG C, and fatty acid response is added at 60 DEG C in temperature, is warming up at 180 DEG C
Kept for 0.5 hour, then slowly promote temperature to 240 DEG C of progresss fast reactions, adjust the vacuum degree inside reaction kettle for-
0.08MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 240 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body 1, and the central area of the tube body is equipped with support column 2, the support column
Column plate group 3 is symmetrically arranged in tubular body.
Further, the column plate group includes the first column plate 31, the second column plate 32, and first column plate and the second column plate are handed over
Mistake setting.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove 311,
The mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole 312, and first column plate is hollow structure, and described the
Adsorption layer 313 is equipped with inside one column plate.
Further, the adsorption layer is molecular sieve layer.
Further, the molecular sieve layer is adopted as A type molecular sieve.
In the present invention, the active carbon layer or molecular sieve layer of use limited can be reused, and detergent power is strong, purification
Effect is good.
Further, second column plate is consistent with the first tower plate structure.
Particularly, the riser top is connected with vacuum pipe (not marking).
Riser in the present invention can make substance, moisture, volatilization of the boiling point at 100-800 DEG C after column plate separates
Property gas be discharged through the vacuum pipe on riser top, and boiling point stays in reaction kettle as far as possible in 800-2000 DEG C of substance.
In the present invention, temperature-gradient method is first used in polyglycerol ester synthesis, it is possible to reduce material coking uses high vacuum afterwards
Remove the smell that partial material coking generates.Since high vacuum can take away a part of material, separated by column plate group in riser,
Using the boiling-point difference of substance, recycling quilt can be carried out by increasing the contact area of column plate group and steam and the length of riser
The partial material that vacuum is taken away；In the present invention by using active carbon layer/molecular sieve layer adsorption treatment after, solve polyglycerol ester
The unhappy smell generated in synthesis process.The present invention is Promethean to use tower in polyglycerol ester in process of production reaction kettle
The adsorption layer being arranged in plate isolation technics and column plate organically combines, and can either achieve the purpose that the offending smell of removal, simultaneously
The distillate distilled out can be effectively recycled, good technological effect can be reached.
The beneficial effects of the present invention are:
1. solving the unhappy smell that polyglycerol ester generates in process of production, have centainly to environment and human body personal safety
Protection in degree；
It is recycled 2. solving the distillate that polyglycerol ester distills out in the synthesis process and carrying out object, reduces water consumption and water
Discharge.
Embodiment 2
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06-0.099MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S2, the vacuum degree is 0.06MPa.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 105 DEG C, basic catalyst is added, stirring is warming up to 180 DEG C, and fatty acid response is added at 130 DEG C in temperature, is warming up to 230
It is kept at DEG C 1 hour, then slowly promotes temperature to 298 DEG C of progress fast reactions, adjusting the vacuum degree inside reaction kettle is
0.099MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 298 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body 1, and the central area of the tube body is equipped with support column 2, the support column
Column plate group 3 is symmetrically arranged in tubular body.
Further, the column plate group includes the first column plate 31, the second column plate 32, and first column plate and the second column plate are handed over
Mistake setting.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove 311,
The mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole 312, and first column plate is hollow structure, and described the
Adsorption layer 313 is equipped with inside one column plate.
Further, the adsorption layer is active carbon layer.
Embodiment 3
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 65 DEG C, basic catalyst is added, stirring is warming up to 95 DEG C, and fatty acid response is added at 75 DEG C in temperature, is warming up at 195 DEG C
Kept for 0.6 hour, then slowly promote temperature to 260 DEG C of progresss fast reactions, adjust the vacuum degree inside reaction kettle for-
0.01MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 255 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body 1, and the central area of the tube body is equipped with support column 2, the support column
Column plate group 3 is symmetrically arranged in tubular body.
Further, the column plate group includes the first column plate 31, the second column plate 32, and first column plate and the second column plate are handed over
Mistake setting.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove 311,
The mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole 312, and first column plate is hollow structure, and described the
Adsorption layer 313 is equipped with inside one column plate.
Further, the adsorption layer is molecular sieve layer.
Further, the molecular sieve layer is adopted as Y type molecular sieve.
Embodiment 4
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is 0.099MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 90 DEG C, basic catalyst is added, stirring is warming up to 160 DEG C, and fatty acid response is added at 110 DEG C in temperature, is warming up to 200 DEG C
It is lower to be kept for 0.8 hour, temperature is then slowly promoted to 275 DEG C of progress fast reactions, and adjusting the vacuum degree inside reaction kettle is
0.06MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 265 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body 1, and the central area of the tube body is equipped with support column 2, the support column
Column plate group 3 is symmetrically arranged in tubular body.
Further, the column plate group includes the first column plate 31, the second column plate 32, and first column plate and the second column plate are handed over
Mistake setting.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove 311,
The mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole 312, and first column plate is hollow structure, and described the
Adsorption layer 313 is equipped with inside one column plate.
Further, the adsorption layer is molecular sieve layer.
Further, the molecular sieve layer is adopted as X type molecular sieve.
Embodiment 5
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is 0.015MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 80 DEG C, basic catalyst is added, stirring is warming up to 120 DEG C, and fatty acid response is added at 90 DEG C in temperature, is warming up to 190 DEG C
It is lower to be kept for 0.7 hour, temperature is then slowly promoted to 270 DEG C of progress fast reactions, and adjusting the vacuum degree inside reaction kettle is
0.02MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 260 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body, and the central area of the tube body is equipped with support column, the support column in
Tubular body is symmetrically arranged with column plate group.
Further, the column plate group includes the first column plate, the second column plate, and first column plate is staggeredly set with the second column plate
It sets.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove, described
Mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole, and first column plate is hollow structure, first tower
Intralamellar part is equipped with adsorption layer.
Further, the adsorption layer is active carbon layer.
Further, second column plate is consistent with the first tower plate structure.
Embodiment 6
A kind of deodorizing methods in esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is 0.032MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
Further, in step S1, the processing method of the temperature-gradient method are as follows: polyglycereol is added to reaction kettle, is heated up
To 85 DEG C, basic catalyst is added, stirring is warming up to 135 DEG C, and fatty acid response is added at 95 DEG C in temperature, is warming up to 205 DEG C
It is lower to be kept for 0.75 hour, temperature is then slowly promoted to 280 DEG C of progress fast reactions, and adjusting the vacuum degree inside reaction kettle is
0.05MPa, metering generate water to the 80% of predetermined value after reaction was completed, keep 255 DEG C of reaction temperature.
Further, in step S3, exhaust phase is that under vacuum conditions, raw material unreacted in material is distilled
It is recycled, evaporates excess by molecular distillation and isolate polyglycerol ester.
Further, the riser includes tube body, and the central area of the tube body is equipped with support column, the support column in
Tubular body is symmetrically arranged with column plate group.
Further, the column plate group includes the first column plate, the second column plate, and first column plate is staggeredly set with the second column plate
It sets.
Further, the horizontal cross-section of first column plate is semicircle, and the middle part of the column plate is equipped with mounting groove, described
Mounting groove and support column are cooperatively connected.
Further, first column plate is symmetrically arranged with liquid reducing hole, and first column plate is hollow structure, first tower
Intralamellar part is equipped with adsorption layer.
Further, the adsorption layer is molecular sieve layer.
Further, the molecular sieve layer is adopted as A type molecular sieve.
Further, second column plate is consistent with the first tower plate structure.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.It is noted that the technical characteristic being not described in detail in the present invention, it can be by appointing
One prior art is realized.
Claims (10)
1. the deodorizing methods in a kind of esters synthesis, which comprises the following steps:
S1. the synthetic reaction of polyglycerol ester is carried out in reaction kettle by the way of temperature-gradient method；
S2. phase after the reaction, adjusting the vacuum degree inside reaction kettle is -0.06-0.099MPa；
S3. exhaust phase passes through riser exhaust and recovery section material；
In step S3, offending smell is removed by the column plate group being arranged in riser.
2. the deodorizing methods in esters synthesis according to claim 1, which is characterized in that in step S2, the vacuum degree
For -0.01-0.06MPa.
3. the deodorizing methods in esters synthesis according to claim 1, which is characterized in that in step S1, the segmentation is risen
The processing method of temperature are as follows: polyglycereol is added to reaction kettle, is warming up to 50-105 DEG C, basic catalyst is added, stirring is warming up to
80-180 DEG C, fatty acid response is added at 60-130 DEG C in temperature, is warming up at 180-230 DEG C and is kept for 0.5-1 hours, is then delayed
For the slow temperature that promoted to 240-298 DEG C of progress fast reaction, adjusting the vacuum degree inside reaction kettle is -0.08-0.099MPa, metering
Reaction was completed after generation water to the 80% of predetermined value, is kept for 240-298 DEG C of reaction temperature.
4. the deodorizing methods in esters synthesis according to claim 1, which is characterized in that in step S3, exhaust phase is
Under vacuum conditions, raw material unreacted in material is distilled and is recycled, evaporate excess isolated by molecular distillation it is poly-
Glyceride.
5. the deodorizing methods in esters synthesis according to claim 1, which is characterized in that the riser includes tube body,
The central area of the tube body is equipped with support column, and the support column is symmetrically arranged with column plate group in tubular body.
6. the deodorizing methods in esters synthesis according to claim 5, which is characterized in that the column plate group includes the first tower
Plate, the second column plate, first column plate are staggered with the second column plate.
7. the deodorizing methods in esters synthesis according to claim 6, which is characterized in that the level of first column plate is cut
Face is semicircle, and the middle part of the column plate is equipped with mounting groove, and the mounting groove and support column are cooperatively connected.
8. the deodorizing methods in esters synthesis according to claim 7, which is characterized in that first column plate is symmetrically arranged with
Liquid reducing hole, first column plate are hollow structure, are equipped with adsorption layer inside first column plate.
9. the deodorizing methods in esters synthesis according to claim 8, which is characterized in that the adsorption layer is active carbon layer
Or molecular sieve layer.
10. the deodorizing methods in esters synthesis according to claim 9, which is characterized in that second column plate and first
Tower plate structure is consistent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145046A (en) * | 2021-03-04 | 2021-07-23 | 佛山市银美联合科技有限公司 | Equipment for preparing polyglycerol isomerous fatty acid ester and operation method thereof |
| CN113230985A (en) * | 2021-03-04 | 2021-08-10 | 佛山市银美联合科技有限公司 | Equipment for preparing polyglycerol n-fatty acid ester and operation method thereof |
| CN114869828A (en) * | 2022-04-27 | 2022-08-09 | 广州禾力生物科技有限公司 | Pet deodorant composition and application thereof |
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| CN114869828A (en) * | 2022-04-27 | 2022-08-09 | 广州禾力生物科技有限公司 | Pet deodorant composition and application thereof |
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