CN110947341A - Continuous catalytic esterification dehydration fixed bed reactor - Google Patents
Continuous catalytic esterification dehydration fixed bed reactor Download PDFInfo
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- CN110947341A CN110947341A CN201911395364.3A CN201911395364A CN110947341A CN 110947341 A CN110947341 A CN 110947341A CN 201911395364 A CN201911395364 A CN 201911395364A CN 110947341 A CN110947341 A CN 110947341A
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- 238000005886 esterification reaction Methods 0.000 title claims abstract description 33
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 26
- 230000032050 esterification Effects 0.000 title claims abstract description 26
- 230000018044 dehydration Effects 0.000 title claims abstract description 24
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000012528 membrane Substances 0.000 claims abstract description 24
- 239000002808 molecular sieve Substances 0.000 claims abstract description 23
- 238000005373 pervaporation Methods 0.000 claims abstract description 23
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 239000007795 chemical reaction product Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000006555 catalytic reaction Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 230000002045 lasting effect Effects 0.000 abstract 1
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 6
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000011973 solid acid Substances 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- -1 dibutyl (octyl) phthalate Chemical compound 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009969 flowable effect Effects 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- BSBCMEBZVMSTOL-UHFFFAOYSA-N butane-1,1-diol;hexane-1,1-diol Chemical compound CCCC(O)O.CCCCCC(O)O BSBCMEBZVMSTOL-UHFFFAOYSA-N 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of fixed bed reactors, in particular to a continuous catalytic esterification dehydration fixed bed reactor, which comprises a reactor outer cylinder, wherein a reactor inner cylinder is arranged in the reactor outer cylinder, a heating cavity is arranged between the reactor outer cylinder and the reactor inner cylinder, a heating medium inlet is arranged in the heating cavity extending from the lower end of one side surface of the reactor outer cylinder, a plurality of molecular sieve pervaporation membranes are distributed in the reactor inner cylinder, and a catalyst is filled between each molecular sieve pervaporation membrane in the reactor inner cylinder. The invention carries out continuous catalytic esterification reaction through the integrated fixed bed reactors connected in series, discharges water generated by the reaction through the molecular sieve pervaporation membrane, has low water content and high material conversion rate, can carry out continuous and lasting catalytic reaction, saves cost and reduces environmental pollution.
Description
Technical Field
The invention relates to the technical field of fixed bed reactors, in particular to a continuous catalytic esterification dehydration fixed bed reactor.
Background
The fixed bed reactor is also called a packed bed reactor and is a reactor filled with a solid catalyst or a solid reactant and used for realizing a heterogeneous reaction process, most of conventional esterification production methods are catalytic reactions of inorganic acid such as concentrated sulfuric acid, acid needs to be neutralized in post-treatment, a large amount of salt-containing wastewater is generated, equipment corrosion exists, continuous production cannot be realized, the environmental pollution is serious, and the like, and high-salt wastewater is a worldwide environment-friendly water treatment problem and has the problems of high environment-friendly treatment cost and the like under the existing environment-friendly policy.
However, the esterification conversion rate of the existing solid bed reactor is low, and needs to be further improved, the continuous recycling of the catalyst needs to be improved, meanwhile, the treatment of water generated during the reaction in the reactor is not complete, and other equipment is needed to treat the generated water, so that the environmental pollution is easily caused, and the cost is increased. Accordingly, one skilled in the art provides a continuous catalytic esterification dehydration fixed bed reactor to solve the problems set forth in the background art described above.
Disclosure of Invention
The invention aims to provide a continuous catalytic esterification dehydration fixed bed reactor to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the fixed bed reactor comprises a reaction outer cylinder and a reactor inner cylinder, a heating cavity is formed between the reactor outer cylinder and the reactor inner cylinder, and a plurality of molecular sieve pervaporation membranes for reaction dehydration are arranged in the reactor inner cylinder.
As a further scheme of the invention: an upper cover is arranged at the upper end of the outer cylinder of the reactor, an arc-shaped lower sealing cover is arranged at the lower end of the outer cylinder of the reactor, and a water outlet is arranged in the middle of the lower end of the lower sealing cover.
As a still further scheme of the invention: the reactor comprises a reactor outer barrel, a heating cavity is arranged in the reactor outer barrel, a reaction material inlet is formed in the inner part, extending to the reactor inner barrel, of the upper end of one side face of the reactor outer barrel, a heating medium inlet is formed in the inner part, extending to the heating cavity, of the lower end of one side face of the reactor outer barrel, a heating medium outlet is formed in the inner part, extending to the heating cavity, of the upper end of the other side face of the reactor outer barrel, and a reaction product outlet is formed in the.
As a still further scheme of the invention: each molecular sieve pervaporation membrane is of a hollow round structure, a drain hole is formed in the position, corresponding to the molecular sieve pervaporation membrane, of the bottom end of the inner cylinder of the reactor, and the drain hole is communicated with the inside of the lower sealing cover.
As a still further scheme of the invention: one end of the reaction product outlet extends to the inner position of the reactor inner cylinder and is provided with a filter screen.
As a still further scheme of the invention: catalyst is filled between the adjacent molecular sieve pervaporation membranes.
Compared with the prior art, the invention has the beneficial effects that: the invention designs a continuous catalytic esterification dehydration fixed bed reactor, which carries out continuous catalytic esterification reaction through an integrated fixed bed reactor connected in series, and discharges water generated by the reaction out of a system through a molecular sieve pervaporation membrane. The material conversion rate is high, the produced water content is low, and the water can be directly discharged or recycled through simple treatment, so that the cost is saved, and the environmental pollution is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a continuous catalytic esterification dehydration fixed bed reactor;
FIG. 2 is a schematic view of the internal structure of a fixed bed reactor for dehydration by continuous catalytic esterification;
FIG. 3 is a schematic diagram of the distribution of a molecular sieve pervaporation membrane in a continuous catalytic esterification dehydration fixed bed reactor.
In the figure: 1. an outer reactor barrel; 2. an inner cylinder of the reactor; 3. a heating cavity; 4. a reaction material inlet; 5. a heating medium inlet; 6. a lower sealing cover; 7. a water outlet; 8. a molecular sieve pervaporation membrane; 9. a heating medium outlet; 10. a reaction product outlet; 11. an upper cover; 12. a catalyst; 13. a drain hole; 14. and (4) a filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, a continuous catalytic esterification dehydration fixed bed reactor includes a reactor outer cylinder 1, a reactor inner cylinder 2 is disposed inside the reactor outer cylinder 1, a heating chamber 3 is disposed between the reactor outer cylinder 1 and the reactor inner cylinder 2, a reaction material inlet 4 is disposed inside one side surface of the reactor outer cylinder 1 extending to the reactor inner cylinder 2, a heating medium inlet 5 is disposed inside one side surface of the reactor outer cylinder 1 extending to the heating chamber 3, a heating medium outlet 9 is disposed inside the other side surface of the reactor outer cylinder 1 extending to the heating chamber 3, the heating medium may be steam, and during operation, hot steam is introduced into the heating chamber 3 inside the reactor outer cylinder 1 from the heating medium inlet 5 through an external steam heating device, so that the hot steam is distributed around the outer wall of the reactor inner cylinder 2, the interior of the reactor is heated, so that the reaction materials can be conveniently heated to a certain temperature after entering the inner reactor cylinder 2 in the outer reactor cylinder 1 and can be subjected to esterification reaction by being matched with the catalysis of the catalyst 12.
The lower end of the other side surface of the reactor outer cylinder 1 extends to the inside of the reactor inner cylinder 2 and is provided with a reaction product outlet 10, a plurality of molecular sieve pervaporation membranes 8 are distributed in the reactor inner cylinder 2, gaps exist between every two molecular sieve pervaporation membranes 8, the molecular sieve pervaporation membranes 8 are of a hollow cylinder structure, the bottom end of the inside of the reactor inner cylinder 2 corresponding to the positions of the molecular sieve pervaporation membranes 8 is provided with a drain hole 13, the drain hole 13 is communicated with the inside of the lower sealing cover 6, one end of the reaction product outlet 10 extends to the inside of the reactor inner cylinder 2 and is provided with a filter screen 14, the upper end of the reactor outer cylinder 1 is provided with an upper cover 11, the lower end of the reactor outer cylinder 1 is provided with an arc-shaped lower sealing cover 6, the middle part of the lower end of the lower sealing cover 6 is provided with a water outlet 7, wherein one end of the water outlet 7 is externally connected with a, the water is removed through a molecular sieve pervaporation membrane 8 under the traction of vacuum, enters a lower sealing cover 6 through a drain hole 13 at the lower end of the membrane, and is discharged through a drain outlet 7, thereby realizing continuous catalytic esterification dehydration.
The catalyst 12 is filled between each molecular sieve pervaporation membrane 8 in the inner cylinder 2 of the reactor, the catalyst 12 is general solid acid or supported solid acid, wherein the supported solid acid is silica gel solid acid catalyst loaded with sulfonic acid groups preferentially, the reaction of reaction materials can be accelerated under the action of the catalyst 12, and the catalyst 12 can be continuously and durably used, so that the continuous catalytic action of the reaction materials is further improved.
The reactor is used in single-stage or multi-stage series connection, is suitable for continuous catalytic esterification reaction of organic acid (anhydride) and organic alcohol, and particularly comprises the following steps: continuous catalytic esterification dehydration of phthalic anhydride with butanol (or octanol) to produce dibutyl (octyl) phthalate, continuous esterification of phthalic acid with butanol (or octanol) to produce dibutyl (octyl) phthalate, continuous esterification of (meth) acrylic acid with monohydric alcohols to produce monohydric (meth) acrylates, such as the C1-C8 esters of (meth) acrylic acid;
the continuous catalytic esterification reaction described above also means in particular: continuous esterification of (meth) acrylic acid with a diol to produce a diol di (meth) acrylate such as diethylene glycol di (meth) acrylate, dipropylene glycol di (meth) acrylate, hexanediol (butanediol) di (meth) acrylate, and the like;
the continuous catalytic esterification reaction described above also means in particular: continuous esterification of (meth) acrylic acid with a polyol to produce polyol poly (meth) acrylates, such as trimethylolpropane tri (meth) acrylate, pentaerythritol tetra (meth) acrylate;
the reactor designed by the invention has the following specific experiments, and the specific operation steps are as follows:
s1, adding 10mol of phthalic anhydride and 25mol of n-butanol into 5L of reaction ingredients, heating to 80-90 ℃, and fully dissolving the materials to form a flowable homogeneous liquid;
s2, then filling a silica gel solid catalyst 12 loaded with sulfonic acid groups in a reactor inner cylinder 2 in a reactor outer cylinder 1, and injecting hot steam into a heating cavity 3 in the reactor outer cylinder 1 through a heating medium inlet 5 to heat the temperature in the reactor inner cylinder 2 to 110-120 ℃;
s3, slowly injecting the reaction materials into the inner reactor cylinder 2 in the outer reactor cylinder 1 by using the reaction material inlet 4, continuously separating moisture generated by the reaction through the molecular sieve pervaporation membrane 8 in the inner reactor cylinder 2, and further allowing the generated moisture to enter the hollow part of the molecular sieve pervaporation membrane 8, and discharging the moisture into the lower sealing cover 6 through the water discharge hole 13 at the bottom of the inner reactor cylinder 2 and then discharging the moisture through the water discharge hole 7;
s4, filtering the reacted materials through a filter screen 14, collecting the materials in a 5L collecting tank through a reaction product outlet 10, treating all the materials after 3 hours, separating 179 g of water to obtain the dehydration rate of 99.4%, distilling the reacted materials to distill out unreacted n-butyl alcohol to obtain the product dibutyl phthalate.
The working principle of the invention is as follows: firstly, a reaction material (which is composed of organic acid (anhydride) and organic alcohol according to a certain proportion) is heated to a certain temperature to become a flowable homogeneous liquid (if the liquid can not be formed, a proper solvent is added for dilution), then the liquid is sent into a reactor inner cylinder 2 in a reactor outer cylinder 1 through a reaction material inlet 4, steam is injected into a heating cavity 3 in cooperation with a heating medium inlet 5 to heat the reactor inner cylinder 2, so that the reaction material in the reactor inner cylinder 2 generates an esterification reaction in cooperation with the catalysis of a catalyst 12 at a certain temperature, water generated by the reaction is removed through a molecular sieve pervaporation membrane 8 under the traction of vacuum and is discharged through a water outlet 7, thereby realizing continuous catalytic esterification dehydration, needing no treatment such as neutralization, water washing and the like, basically generating no waste water, shortening the process flow time, and having high efficiency, the dehydration rate reaches 99.4 percent, the conversion efficiency of the materials reaches more than 99 percent, and the reactors are used in series, so that the conversion rate of the materials can be further improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a continuous catalytic esterification dehydration fixed bed reactor, its characterized in that, fixed bed reactor is including reacting urceolus (1) and reactor inner tube (2), be formed with between reactor urceolus (1) and reactor inner tube (2) heating chamber (3), be provided with a plurality of molecular sieve pervaporation membranes (8) that are used for the reaction dehydration in reactor inner tube (2).
2. The continuous catalytic esterification dehydration fixed bed reactor according to claim 1, characterized in that the upper end of the outer reactor cylinder (1) is provided with an upper cover (11), the lower end of the outer reactor cylinder (1) is provided with an arc-shaped lower sealing cover (6), and the middle part of the lower end of the lower sealing cover (6) is provided with a water outlet (7).
3. The continuous catalytic esterification dehydration fixed bed reactor according to claim 1, characterized in that a reaction material inlet (4) is arranged inside the reactor outer cylinder (1) from one side upper end to the reactor inner cylinder (2), a heating medium inlet (5) is arranged inside the reactor outer cylinder (1) from one side lower end to the heating chamber (3), a heating medium outlet (9) is arranged inside the reactor outer cylinder (1) from the other side upper end to the heating chamber (3), and a reaction product outlet (10) is arranged inside the reactor outer cylinder (1) from the other side lower end to the reactor inner cylinder (2).
4. The continuous catalytic esterification dehydration fixed bed reactor according to claim 2, characterized in that each molecular sieve pervaporation membrane (8) is a hollow round structure, a drain hole (13) is formed at the position of the bottom end of the inner reactor cylinder (2) corresponding to the molecular sieve pervaporation membrane (8), and the drain hole (13) is connected with the inside of the lower cover (6) in a penetrating manner.
5. A continuous catalytic esterification dehydration fixed bed reactor according to claim 3, characterized in that a filter screen (14) is provided at a position where one end of the reaction product outlet (10) extends to the inside of the reactor inner tube (2).
6. A continuous catalytic esterification dehydration fixed bed reactor according to claim 4 characterized in that catalyst (12) is filled between adjacent molecular sieve pervaporation membranes (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911395364.3A CN110947341A (en) | 2019-12-30 | 2019-12-30 | Continuous catalytic esterification dehydration fixed bed reactor |
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| CN201911395364.3A CN110947341A (en) | 2019-12-30 | 2019-12-30 | Continuous catalytic esterification dehydration fixed bed reactor |
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| CN110947341A true CN110947341A (en) | 2020-04-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181963A (en) * | 2021-05-14 | 2021-07-30 | 安庆精益精化工有限公司 | Preparation method of solid alkyl sulfonic acid catalyst |
| CN113967448A (en) * | 2021-10-28 | 2022-01-25 | 中国石油化工股份有限公司 | Internal circulation catalytic wet oxidation reactor and water treatment system |
| CN116251540A (en) * | 2023-02-15 | 2023-06-13 | 常州瑞华化工工程技术股份有限公司 | Bubbling bed reactor and method for continuous dehydration and esterification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103553921A (en) * | 2013-11-20 | 2014-02-05 | 山东理工大学 | Continuous dehydration esterification reaction device as well as continuous esterification reaction method |
| CN106631647A (en) * | 2016-11-02 | 2017-05-10 | 中溶科技股份有限公司 | Method for removing water in continuous esterifying process |
| CN211514463U (en) * | 2019-12-30 | 2020-09-18 | 安庆精益精化工有限公司 | Continuous catalytic esterification dehydration fixed bed reactor |
-
2019
- 2019-12-30 CN CN201911395364.3A patent/CN110947341A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553921A (en) * | 2013-11-20 | 2014-02-05 | 山东理工大学 | Continuous dehydration esterification reaction device as well as continuous esterification reaction method |
| CN106631647A (en) * | 2016-11-02 | 2017-05-10 | 中溶科技股份有限公司 | Method for removing water in continuous esterifying process |
| CN211514463U (en) * | 2019-12-30 | 2020-09-18 | 安庆精益精化工有限公司 | Continuous catalytic esterification dehydration fixed bed reactor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113181963A (en) * | 2021-05-14 | 2021-07-30 | 安庆精益精化工有限公司 | Preparation method of solid alkyl sulfonic acid catalyst |
| CN113181963B (en) * | 2021-05-14 | 2022-10-11 | 安庆精益精化工有限公司 | Preparation method of solid alkyl sulfonic acid catalyst |
| CN113967448A (en) * | 2021-10-28 | 2022-01-25 | 中国石油化工股份有限公司 | Internal circulation catalytic wet oxidation reactor and water treatment system |
| CN116251540A (en) * | 2023-02-15 | 2023-06-13 | 常州瑞华化工工程技术股份有限公司 | Bubbling bed reactor and method for continuous dehydration and esterification |
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