WO2019041063A1 - Dispositif de système de réaction d'estérification d'acrylate d'isooctyle - Google Patents

Dispositif de système de réaction d'estérification d'acrylate d'isooctyle Download PDF

Info

Publication number
WO2019041063A1
WO2019041063A1 PCT/CN2017/000554 CN2017000554W WO2019041063A1 WO 2019041063 A1 WO2019041063 A1 WO 2019041063A1 CN 2017000554 W CN2017000554 W CN 2017000554W WO 2019041063 A1 WO2019041063 A1 WO 2019041063A1
Authority
WO
WIPO (PCT)
Prior art keywords
reboiler
tower
pipe
condenser
evaporation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/000554
Other languages
English (en)
Chinese (zh)
Inventor
李军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/CN2017/000554 priority Critical patent/WO2019041063A1/fr
Publication of WO2019041063A1 publication Critical patent/WO2019041063A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/62—Use of additives, e.g. for stabilisation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
    • C07C69/533—Monocarboxylic acid esters having only one carbon-to-carbon double bond
    • C07C69/54—Acrylic acid esters; Methacrylic acid esters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

Definitions

  • the invention relates to the field of production of isooctyl acrylate, and in particular to an isooctyl acrylate esterification reaction system device.
  • Isooctyl acrylate a colorless transparent body. Melting point -90 ° C, boiling point 215-219 ° C, 123-127 ° C (8.0 kPa), relative density 0.8859 (20 / 4 ° C), refractive index 1.4358, flash point 82 ° C. It is miscible with alcohol: ether, almost insoluble in water, and has a solubility of 0.01% in water at 25 °C. Easy to polymerize, industrial products can use 100ppm hydroquinone or 50-100ppm hydroquinone monomethyl ether as a polymerization inhibitor.
  • Isooctyl acrylate yellow color is isooctyl acrylate, alias: 2-ethylhexyl acrylate, formula: C11H20O2, molecular weight (Molecular Weight): 184.28, CAS No.: 103-11-7, quality Specification (Purity): 99.50%, Physical Properties density 0.885, melting point -90 ° C, boiling point 215-219 ° C, refractive index 1.443-1.436, flash point 82 ° C, water solubility ⁇ 0.1 g / 100 mL At22 ° C.
  • 2-ethylhexyl acrylate is a monomer of high molecular polymer, copolymerized, crosslinked, grafted with other monomers to acrylic resin products, used in synthetic fiber fabric processing, adhesives, coatings, plastic modification And so on.
  • Preparation method of isooctyl acrylate Direct esterification method Acrylic acid and 2-ethylhexanol are esterified by using sulfuric acid as a catalyst, followed by neutralization, dealcoholization and rectification to obtain a finished product.
  • the transesterification method uses methyl acrylate and 2-ethylhexanol to transesterify in the presence of titanium tetrachloride as a catalyst to form 2-ethylhexyl acrylate.
  • the finished product is obtained by distillation.
  • the present invention proposes an isooctyl acrylate esterification reaction system device, which is simple and ingenious in design, rationally utilizes all available resources, saves energy, reduces production cost, and has high production efficiency and reaction effect. it is good.
  • the isooctyl acrylate esterification reaction system device comprises a de-lighting tower, a de-weighting tower, a condenser, a reboiler, a feeding tube is arranged at an intermediate position on one side of the de-lighting tower, and a condenser is connected at the top of the de-lighting tower to condense
  • a condenser is connected at the top of the de-lighting tower to condense
  • One end of the device is connected to the upper end side of the de-lighting tower, the top of the de-weighting tower is equipped with a condenser, one end of the condenser is connected to the upper end side of the de-weighting tower, and the lower end side of the de-lighting tower is equipped with a reboiler, and the lower end of the de-lighting tower is passed.
  • the pipeline is connected to the lower end of the reboiler, and the upper end of the reboiler is connected to the lower middle part of the light tower through the pipeline.
  • the lower end of the de-weighting tower is also equipped with a reboiler.
  • the lower end of the de-weighting tower is connected to the lower end of the reboiler through the pipeline, and the reboiler is connected.
  • the upper end is connected to the de-weighting tower through a pipeline
  • a preheater is arranged on the feeding pipe on the side of the de-lighting tower
  • a branch connecting the reboiler at the lower end of the de-lighting tower is divided into a branch to connect the middle of the de-weighting tower
  • a circulation pump is arranged on the inlet end of the reboiler.
  • the inlet end of the reboiler at the lower end of the de-weighting tower is connected with a branch pipe leading to the evaporator, the upper end of the evaporator is connected to the condenser through the pipeline, the outlet of the condenser is connected to the transfer pump, and the condenser is sent to the de-weighting tower through the transfer pump
  • one side of the evaporator is provided with a steam inlet pipe and a steam condensate outlet pipe
  • one side of the preheater is provided with a heating inlet pipe and a condensed water outlet pipe, and the steam outlet pipe of the evaporator is connected.
  • the heating inlet pipe of the preheater and the condensate outlet pipe of the preheater are connected to the circulating water tank.
  • the reboiler is disposed at the bottom of the de-weighting tower, and includes a casing.
  • the two ends of the casing are sealingly connected with an upper cover and a lower cover, and the upper cover is provided with a gas outlet pipe, and the lower cover a liquid inlet pipe is disposed, and the lower cover is fixedly mounted with a distribution plate disposed on the liquid inlet pipe spraying path for spraying the liquid inlet pipe into a liquid uniform distribution plate, and the distribution plate comprises a disk body.
  • the reboiler further includes a plurality of tubes sealed and mounted on the two ends of the casing, and sealed at both ends and the tube plate;
  • the liquid inlet pipe is connected to the bottom of the de-weighting tower, and the gaseous outlet pipe is connected to the middle and lower part of the de-weighting tower; the upper end of the casing is provided with a steam inlet pipe, and the lower end is provided with a steam outlet pipe.
  • the evaporator is provided with a motor reducer, a material distributor, a rotor, a scraper, an evaporation can, an evaporation can II, a vacuum pump connection port, a steam inlet, a steam condensate outlet, a material inlet, a discharge port, and an upper end of the rotor.
  • the motor reducer is provided, the lower end extends into the material distributor, the material distributor is connected to the external vacuum pump through the vacuum pump connection port provided thereon, the scraper is arranged at the lower end of the material distributor, and the scraper is mounted on the rotor, and the material is distributed.
  • the material is imported near the upper end of the scraper, and the lower end of the material distributor is fixed with an evaporation tank 1 and an evaporation tank.
  • the two evaporation tanks are provided with two inner and outer layers, and the inside of the material distributor is connected with the evaporation tank and the evaporation tank.
  • the inner layer is connected, and the scraper is close to the upper end of the inner wall of the evaporation can.
  • the inner and outer walls of the two evaporation cans have a hollow structure, and the outer wall is provided with a steam inlet and a steam condensate outlet, and is disposed at the bottom of the evaporation can 2 There is a discharge port.
  • the de-weighting tower comprises a top, a middle part and a bottom part, a reflux liquid distributor is arranged inside the top part, a middle part is a stripping section and a side stream rectifying section, and a partition wall is arranged between the stripping section and the side stream rectifying section, and the stripping is carried out.
  • the connection between the upper end and the top of the section is a mesh-shaped plate
  • the connection between the lower end and the bottom of the stripping section is a mesh-shaped plate
  • the connection between the upper end and the top of the side-line rectifying section is a solid partition
  • the connection between the side rectification section and the bottom is a net. Hole plate.
  • the reflux distributor includes a nozzle and a distributor, the bottom end of the nozzle is fixed with a distributor, the top of the nozzle is fixed to the upper joint by an elbow, and the end of the upper joint is provided a flange; the distributor is in the shape of a disk, wherein the disk body is provided with a distribution manifold, and the distribution manifold is uniformly provided with a distribution pipe perpendicular thereto, the distribution main pipe and the distribution pipe Each of the tops is uniformly provided with a through hole.
  • the invention has the advantages of simple design, high resource utilization, reduced energy waste, reduced production cost, installation of a preheater at the front end of the light tower, and heating by using the waste heat of the steam condensate of the evaporator, not only preheating the material , the thermal energy is fully utilized, and the final condensed water is sent to the circulating water tank for recycling;
  • Figure 1 is a schematic illustration of the invention.
  • Figure 2 is a schematic illustration of a reboiler of the present invention.
  • Figure 3 is a schematic illustration of an evaporator of the present invention.
  • Figure 4 is a schematic illustration of the de-weighting column of the present invention.
  • Figure 5 is a side elevational view of the reflux distributor of the present invention.
  • Figure 6 is a bottom plan view of a reflux distributor of the present invention.
  • an isooctyl acrylate esterification reaction system device comprises a de-lighting tower 1, a de-weighting tower 2, a condenser 3, a reboiler 4, and a feeding tube is disposed at an intermediate position on one side of the stripping tower 1
  • the top of the light tower 1 is connected with a condenser 3, one end of which is connected to the upper end side of the de-lighting tower 1, the top end of the de-weighting tower 2 is equipped with a condenser 3, and one end of the condenser 3 is connected to the upper end side of the de-weighting tower 2,
  • the lower end side of the light tower 1 is equipped with a reboiler 4, the lower end of the de-lighting tower 1 is connected to the lower end of the reboiler 4 through a pipeline, and the upper end of the reboiler 4 is connected to the lower middle part of the light tower 1 through a pipeline, and the de-weighting tower 2 is The lower end side of the
  • the lower end of the de-lighting tower 1 is connected to the reboiler 4, and a branch is connected to the middle of the de-weighting tower 2.
  • the lower end of the reboiler 4 is equipped with a circulation pump 6 on the inlet end of the reboiler 4, and the de-weighting tower 2
  • the inlet end of the reboiler 4 at the lower end is connected with a branch pipe leading to the evaporator 7, the upper end of the evaporator 7 is connected to the condenser 3 through a pipeline, and the outlet of the condenser 3 is connected to the transfer pump 8, and condensing 3 is transported to the intermediate position of the de-weighting tower 2 by the transfer pump 8, one side of the evaporator 7 is provided with a steam inlet pipe and a steam condensate outlet pipe, and one side of the preheater 5 is provided with a heating inlet pipe And a condensate outlet pipe, the steam outlet pipe of the evapor
  • the reboiler 4 is disposed at a lower portion of the de-lighting tower 1 or the de-weighting tower 2, and includes a casing 41.
  • the two ends of the casing 41 are sealingly connected with an upper cover 44 and a lower cover 45.
  • the cover 44 is provided with a gas outlet pipe 46.
  • the lower cover 45 is provided with a liquid inlet pipe 47.
  • the lower cover 45 is fixedly mounted on the injection path of the liquid inlet pipe 47 for the liquid inlet pipe. 47 is sprayed into a liquid-distributed distribution plate 48.
  • the distribution plate 48 includes a disk body 49.
  • the disk body 49 is provided with a plurality of through holes centered on the center of the disk body; the cross section of the disk body 49 is An arc shape; an opening area of the disc body 49 is larger than a cross-sectional area of the liquid inlet tube 47; a diameter of the disc body 49 is a cross section of the housing 41
  • the reboiler 4 further includes a tube plate 42 sealed at both ends of the casing 41, and a plurality of rows of tubes 43 sealed at both ends and the tube plate 42; at the same time, the liquid inlet pipe 47 is connected to At the bottom of the de-weighting tower 1, a gaseous outlet pipe 47 is connected to the lower middle portion of the de-weighting tower 1, and the upper end of the casing 41 is provided with a steam inlet pipe 410 and the lower end is provided with a steam outlet pipe 411.
  • the evaporator 7 is provided with a motor reducer 71, a material distributor 72, a rotor 73, a scraper 76, an evaporation can 74, an evaporation can II 75, a vacuum pump connection port 77, a steam inlet 79, and a steam condensate outlet 710.
  • the material inlet 711 and the discharge port 78 are provided with a motor reducer 71 at the upper end of the rotor 73, and the lower end extends into the material distributor 72.
  • the material distributor 72 is connected to the external vacuum pump through the vacuum pump connection port 77 provided thereon, and the material distribution
  • the lower end of the device 72 is provided with a scraper 76.
  • the scraper 76 is mounted on the rotor 73.
  • the material distributor 72 is provided with a material inlet 711 near the upper end of the scraper 76.
  • the lower end of the material distributor 72 is sequentially fixed with an evaporation can 74 and an evaporation can.
  • Two 75, two evaporation cans are provided with two inner and outer layers, the material distributor 72 is internally connected with the inner layers of the evaporation can 74 and the evaporation can II 75, and the scraper 76 abuts the upper end of the inner wall of the evaporation can 74, two A hollow structure is formed between the inner and outer walls of the evaporation can, and a steam inlet 79 and a steam condensate outlet 710 are disposed on the outer wall, and a discharge port 78 is provided at the bottom of the evaporation can II 75.
  • the de-weighting tower 2 comprises a top portion 21, a middle portion 22 and a bottom portion 23.
  • the top portion 21 is internally provided with a reflux liquid distributor 29, the middle portion is a stripping section 24 and a side stream rectifying section 25, and the stripping section 24 and the side line are fine.
  • a partition wall 27 is arranged between the distillation section 25, and a mesh-shaped plate 26 is connected at the upper end and the top of the stripping section 24, and a mesh-shaped plate 26 is connected at the lower end and the bottom of the stripping section 24, and the upper end and the top of the side-line rectifying section 25
  • the junction 21 is a solid partition 28, and the junction of the side rectifying section 25 and the bottom is a mesh-like plate 26.
  • the reflux distributor 28 includes a nozzle 291 and a distributor 292.
  • the bottom end of the nozzle 291 is fixed with a distributor 292, and the top of the nozzle 291 is fixed to the upper joint 294 by an elbow 293.
  • the end of the upper connector 294 is provided with a flange 295;
  • the distributor 292 is in the shape of a disk, and the distribution body 296 is disposed in the disk body, and the distribution manifold 296 is evenly disposed thereon.
  • a vertical distribution branch 297 is disposed, and the distribution main pipe 296 and the distribution branch pipe 297 are respectively provided with through holes 298.
  • the heavy component material at the bottom of the de-weighting tower is transported to the evaporator through the transfer pump for heating and evaporation, and a gaseous substance polymerization inhibitor is generated, and the gaseous substance polymerization inhibitor is externally vacuumed from the vacuum pump connection port. It is pumped out, sent to the condenser, turned into a liquid polymerization inhibitor by condensation, and finally sent to the middle of the de-weighting tower through the transfer pump, and the polymerization inhibitor is placed in the middle of the de-weighting tower, which can effectively stabilize the effect.
  • the steam passing through the evaporator including the gaseous and liquid condensed water, contains a large amount of heat, which is used to pass into the preheater.
  • the material passing through the preheater is heated to a certain temperature of about 100 degrees, so that not only the heat energy is fully utilized, but also the cold material is prevented from being put into the light tower to cause low material separation efficiency, and the gaseous and liquid condensed water passes through the preheater. , completely cooled into a liquid, can be directly put into the recycling water tank for recycling, and does not need

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un dispositif de système de réaction d'estérification d'acrylate d'isooctyle. Le dispositif comprend une tour d'élimination d'alcanes légers, une tour d'élimination d'alcanes lourds, un condenseur, un rebouilleur et un préchauffeur. Un préchauffeur est disposé sur une conduite d'alimentation d'un côté de la tour d'élimination d'alcanes légers, et une conduite de ramification se raccordant au milieu de la tour d'élimination d'alcanes lourds est dérivée à partir d'une canalisation au niveau de l'extrémité inférieure de la tour d'élimination d'alcanes légers se connectant au rebouilleur. Une pompe de circulation est disposée sur une canalisation d'entrée au niveau de l'extrémité inférieure du rebouilleur. La canalisation d'entrée du rebouilleur à l'extrémité inférieure de la tour d'élimination d'alcanes lourds est reliée à une conduite de ramification conduisant à un évaporateur. L'extrémité supérieure de l'évaporateur est reliée au condenseur par l'intermédiaire d'une canalisation, et une sortie du condenseur est reliée à une pompe de transfert. Les produits condensés provenant du condenseur sont transférés vers une position intermédiaire de la tour d'élimination d'alcanes lourds par l'intermédiaire de la pompe de transfert. Un côté de l'évaporateur est équipé d'une conduite d'entrée de vapeur et d'une conduite de sortie de condensat de vapeur. Une conduite de sortie de vapeur de l'évaporateur est reliée à une conduite d'entrée de chauffage du préchauffeur. Une conduite de sortie de condensat du préchauffeur est reliée à un réservoir d'eau de circulation. La présente invention a les avantages d'une conception simple et ingénieuse, d'une utilisation appropriée de toutes les ressources disponibles, d'une économie d'énergie, d'une réduction des coûts de production, d'une efficacité de production élevée et d'un bon effet de réaction.
PCT/CN2017/000554 2017-09-04 2017-09-04 Dispositif de système de réaction d'estérification d'acrylate d'isooctyle Ceased WO2019041063A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/000554 WO2019041063A1 (fr) 2017-09-04 2017-09-04 Dispositif de système de réaction d'estérification d'acrylate d'isooctyle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/000554 WO2019041063A1 (fr) 2017-09-04 2017-09-04 Dispositif de système de réaction d'estérification d'acrylate d'isooctyle

Publications (1)

Publication Number Publication Date
WO2019041063A1 true WO2019041063A1 (fr) 2019-03-07

Family

ID=65524875

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/000554 Ceased WO2019041063A1 (fr) 2017-09-04 2017-09-04 Dispositif de système de réaction d'estérification d'acrylate d'isooctyle

Country Status (1)

Country Link
WO (1) WO2019041063A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104225942A (zh) * 2014-09-24 2014-12-24 南通中泰化工有限公司 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN104262144A (zh) * 2014-09-24 2015-01-07 南通中泰化工有限公司 丙烯酸异辛酯酯化反应系统装置
CN204170436U (zh) * 2014-09-24 2015-02-25 南通中泰化工有限公司 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN204174129U (zh) * 2014-09-24 2015-02-25 南通中泰化工有限公司 丙烯酸异辛酯酯化反应系统装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104225942A (zh) * 2014-09-24 2014-12-24 南通中泰化工有限公司 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN104262144A (zh) * 2014-09-24 2015-01-07 南通中泰化工有限公司 丙烯酸异辛酯酯化反应系统装置
CN204170436U (zh) * 2014-09-24 2015-02-25 南通中泰化工有限公司 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN204174129U (zh) * 2014-09-24 2015-02-25 南通中泰化工有限公司 丙烯酸异辛酯酯化反应系统装置

Similar Documents

Publication Publication Date Title
US4369097A (en) Method and apparatus of distillation for readily polymerizable liquid
CN100384808C (zh) 含易聚合成分物质的精制方法及其设备
CN103059892B (zh) 直接生产改质沥青的焦油加工蒸馏工艺
CN107501126A (zh) 一种高性能碳纤维生产中高效回收丙烯腈的方法和系统
CN206853157U (zh) 一种自动循环式脂肪酸酯残渣蒸馏器
WO2019041063A1 (fr) Dispositif de système de réaction d'estérification d'acrylate d'isooctyle
CN204170436U (zh) 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN204174129U (zh) 丙烯酸异辛酯酯化反应系统装置
CN109731361A (zh) 一体式升膜蒸发器
CN209663256U (zh) 一种酯化反应装置
CN104225945B (zh) 丙烯酸异辛酯酯化反应中脱重塔回流液分布器系统装置
CN205832658U (zh) 一种木糖生产工艺中的废热回收利用装置
CN104225942A (zh) 丙烯酸异辛酯酯化反应中蒸发器冷凝水再利用系统装置
CN104262144B (zh) 丙烯酸异辛酯酯化反应系统装置
CN208611833U (zh) 多级蒸馏装置
CN214714410U (zh) 一种用于制备乙二醇二乙酸酯的降膜蒸发器
CN104262144A (zh) 丙烯酸异辛酯酯化反应系统装置
CN215312379U (zh) 一种酯化反应釜的分水装置
CN211585268U (zh) 一种能提高甘油纯度的粗甘油分子蒸馏装置
CN108371825A (zh) 一种微膜蒸发器、包含微膜蒸发器的精馏系统及使用微膜蒸发器的精馏方法
CN104258589A (zh) 丙烯酸异辛酯酯化反应中塔釜再沸器冷却系统装置
CN118121957A (zh) 一种双环戊二烯丙烯酸酯制备系统的反应液降膜装置
CN204644245U (zh) 一种用于不饱和聚酯树脂的反应系统
CN224056695U (zh) 减压蒸馏系统
CN204170449U (zh) 丙烯酸异辛酯酯化反应中塔釜再沸器冷却系统装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17923467

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205N DATED 24/06/2020)

122 Ep: pct application non-entry in european phase

Ref document number: 17923467

Country of ref document: EP

Kind code of ref document: A1