AU2018101927A4 - Lauryl thiodipropionate production plant - Google Patents

Lauryl thiodipropionate production plant Download PDF

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Publication number
AU2018101927A4
AU2018101927A4 AU2018101927A AU2018101927A AU2018101927A4 AU 2018101927 A4 AU2018101927 A4 AU 2018101927A4 AU 2018101927 A AU2018101927 A AU 2018101927A AU 2018101927 A AU2018101927 A AU 2018101927A AU 2018101927 A4 AU2018101927 A4 AU 2018101927A4
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Australia
Prior art keywords
tank
store
kettle
production plant
lauryl
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Ceased
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AU2018101927A
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genan guan
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Chengdu Wei En Si Technology Co Ltd
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Chengdu Wei En Si Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides
    • C07C319/20—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides by reactions not involving the formation of sulfide groups
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C319/00—Preparation of thiols, sulfides, hydropolysulfides or polysulfides
    • C07C319/14—Preparation of thiols, sulfides, hydropolysulfides or polysulfides of sulfides

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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

Lauryl thiodipropionate production plant Abstract 5 Lauryl thiodipropionate production plant, including: tank (F101), tank (F102), tank (F103), feedstock pump (J1O-J103), transfer pump (J104~J107), dissolving tank (LIO), condensation kettle (DI01), washing tank (L102), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer pump (JIO ~ J113), esterification reactor (D103), condenser (ClOl), neutralization 10 kettle (D104), pressure filter (L104), crystallization kettle (DI05), centrifuge (LI05), dryer (L106); among them, tank (FlOl) is used to store acrylonitrile, tank (F102) is used to store water, tank (F103) is used to store sulfuric acid, tank (F104) is used to store lauryl alcohol, tank (F104) is used to store acetone; among them, nominal volume of tank (F102) is 3.3-3.5 in3 . Figure 1 . - -Sodium sul fdei lot )2OI Al, F 1mI0 2! AI O ()J I 0b [ 1 03 11041 - [rCotI ~~ j~Thd caronate{1J IT12 VI 3Pro)duct FigureI

Description

Lauryl thiodipropionate production plant
FIELD OF THE INVENTION
The present invention relates to a kind of pharmaceutical synthesis plant, more particularly, relates to lauryl thiodipropionate production plant.
GENERAL BACKGROUND
As an excellent auxiliary antioxidant, lauryl thio dipropionate has the effect of producing a stable structure to prevent oxidation in decomposition of hydroperoxide. It can be used as antioxidant and stabilizer for polyethylene, polypropylene, polyvinyl chloride, ABS resin, etc. It can also be used for natural rubber and synthetic rubber. Using with phenolic antioxidants, lauryl thiodipropionate can produce a synergistic effect, with excellent flex cracking resistance. Because of non-coloring and non-polluting, it is suitable for white or chromic products. It is also used as antioxidants for greases, soaps, lubricating oils and lubricating greases. It is often used with alkylphenol antioxidants or UV absorbers. Used as a thermal stabilizer in polypropylene processing, it is particularly effective. Most of the existing production plant processes are complex. Thus, as an antioxidant, the advantages and disadvantages of production equipment of lauryl thiodipropionate have a great economic significant for improving product quality and reducing the by-product contents.
SUMMARY
The purpose of the present invention is to provide lauryl thiodipropionate production plant, including: tank (Fl01), tank (Fl02), tank (Fl03), feedstock pump (J101-J103), transfer pump (J104-J107), dissolving tank (LI01), condensation kettle (D101), washing tank (L102), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer pump (JI 10 ~ JI 13), esterification reactor (DI03), condenser (Cl01), neutralization kettle (DI04), pressure filter (LI04), crystallization kettle (DI05), centrifuge (LI05), dryer (LI06); among them, tank (Fl01) is used to store acrylonitrile, tank (Fl02) is used to store water, tank (Fl03) is
2018101927 03 Dec 2018 used to store sulfuric acid, tank (F104) is used to store lauryl alcohol, tank (F104) is used to store acetone; among them, nominal volume of tank (F102) is 3.3-3.5 m3, inner pot diameter of condensation kettle (D101) is 650-680 mm, inlet diameter of feedstock pump (J101) is 170-190 mm.
Lauryl thiodipropionate production plant, the production process is: dissolved sodium sulfide in dissolving tank L101 to make aqueous solution, reacted with acrylonitrile in condensation kettle D101 at about 30-36 °C, transferred the obtained thioacrylonitrile into washing tank LI02, washed and separated off alkaline water, then sent the materials into hydrolysis kettle DI02, used sulfuric acid for hydrolysis to obtain thiodipropionic acid. Filtered the materials through LI03 to remove ammonium sulfate, and then sent to esterification reactor DI03, esterification reacted with lauryl alcohol at 20-26 MPa, after esterification, added acetone to dissolve the product, then neutralized with soda ash in neutralization kettle DI04. Removed sodium sulfate by pressure filter LI04, crystalized the crude crystals by crystallization kettle DI05, centrifugal filtered by centrifuge LI05, dried by LI06 and obtained the finished product. The advantages of this invention are that the reaction time is reduced and the reaction rate is improved.
DESCRIPTION OF THE DRAWINGS
Figure 1 is lauryl thiodipropionate production plant.
Include: tank (Fl01), tank (Fl02), tank (Fl03), feedstock pump (J101-J103), transfer pump (J104-J107), dissolving tank (L101), condensation kettle (D101), washing tank (L102), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer pump (J110 ~ J113), esterification reactor (DI03), condenser (Cl01), neutralization kettle (DI04), pressure filter (LI04), 25 crystallization kettle (DI05), centrifuge (LI05), dryer (LI06);
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The following examples with reference to specific embodiments of the present invention are further illustrated:
Embodiment 1
Raw materials and dosages
2018101927 03 Dec 2018
Acrylonitrile Industrial grade 1400kg Lauryl alcohol Industrial grade 2200 kg
Sodium sulfide Industrial grade 1800 kg Acetone Industrial grade Appropriate amount
Sulfuric acid Industrial grade, 55% 1400 kg Soda ash Industrial grade Appropriate amount
Lauryl thiodipropionate production plant, including: tank (Fl01), tank (Fl02), tank (Fl03), feedstock pump (J101-J103), transfer pump (J104-J107), dissolving tank (LI01), condensation kettle (DI01), washing tank (LI02), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer 5 pump (JI 10 ~ JI 13), esterification reactor (DI03), condenser (Cl01), neutralization kettle (DI04), pressure filter (LI04), crystallization kettle (DI05), centrifuge (LI05), dryer (L106); among them, tank (F101) is used to store acrylonitrile, tank (F102) is used to store water, tank (Fl03) is used to store sulfuric acid, tank (Fl04) is used to store lauryl alcohol, tank (F104) is used to store acetone; among them, nominal 10 volume of tank (F102) is 3.3 m3, inner pot diameter of condensation kettle (D101) is
650 mm, inlet diameter of feedstock pump (JI 01) is 170 mm.
Lauryl thiodipropionate production plant, the production process is: dissolved sodium sulfide in dissolving tank L101 to make aqueous solution, reacted with acrylonitrile in condensation kettle D101 at about 30 °C, transferred the obtained 15 thioacrylonitrile into washing tank LI02, washed and separated off alkaline water, then sent the materials into hydrolysis kettle DI02, used sulfuric acid for hydrolysis to obtain thiodipropionic acid. Filtered the materials through LI03 to remove ammonium sulfate, and then sent to esterification reactor DI03, esterification reacted with lauryl alcohol at 20 MPa, after esterification, added acetone to dissolve the product, then 20 neutralized with soda ash in neutralization kettle DI04. Removed sodium sulfate by pressure filter LI04, crystalized the crude crystals by crystallization kettle DI05, centrifugal filtered by centrifuge LI05, dried by LI06 and obtained the finished product.
2018101927 03 Dec 2018
The qualities of the product are as follows:
Exterior White flaky crystalline solid
Melting point >39 °C
Density 0.913
Solubility/ (g/lOOg solvent) Acetone 20, carbon tetrachloride 100, benzene 133, petroleum ether 40
Embodiment 2
Raw materials and dosages
Acrylonitrile Industrial grade 1500kg Lauryl alcohol Industrial grade 2300 kg
Sodium sulfide Industrial grade 1900 kg Acetone Industrial grade Appropriate amount
Sulfuric acid Industrial grade, 55% 1500 kg Soda ash Industrial grade Appropriate amount
Lauryl thiodipropionate production plant, including: tank (F101), tank (F102), tank (Fl03), feedstock pump (J101-J103), transfer pump (J104-J107), dissolving tank (LI01), condensation kettle (D101), washing tank (LI02), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer pump (JI 10 ~ JI 13), esterification reactor (D103), condenser (Cl01), neutralization 10 kettle (D104), pressure filter (LI04), crystallization kettle (D105), centrifuge (LI05), dryer (L106); among them, tank (F101) is used to store acrylonitrile, tank (F102) is used to store water, tank (Fl03) is used to store sulfuric acid, tank (Fl04) is used to store lauryl alcohol, tank (F104) is used to store acetone; among them, nominal volume of tank (F102) is 3.5 m3, inner pot diameter of condensation kettle (D101) is 15 680 mm, inlet diameter of feedstock pump (JI 01) is 190 mm.
Lauryl thiodipropionate production plant, the production process is: dissolved sodium sulfide in dissolving tank L101 to make aqueous solution, reacted with acrylonitrile in condensation kettle D101 at about 36 °C, transferred the obtained
2018101927 03 Dec 2018 thioacrylonitrile into washing tank LI02, washed and separated off alkaline water, then sent the materials into hydrolysis kettle DI02, used sulfuric acid for hydrolysis to obtain thiodipropionic acid. Filtered the materials through LI03 to remove ammonium sulfate, and then sent to esterification reactor DI03, esterification reacted with lauryl 5 alcohol at 26 MPa, after esterification, added acetone to dissolve the product, then neutralized with soda ash in neutralization kettle DI04. Removed sodium sulfate by pressure filter LI04, crystalized the crude crystals by crystallization kettle DI05, centrifugal filtered by centrifuge LI05, dried by LI06 and obtained the finished product.
The qualities of the product are as follows:
Exterior White flaky crystalline solid
Melting point >40 °C
Density 0.914
Solubility/ (g/lOOg solvent) Acetone 20, carbon tetrachloride 100, benzene 133, petroleum ether 40
The embodiments of the present invention are merely preferred embodiments of the present invention, but the range of the present invention is not limited this, and any person who is familiar with those skilled in the arts, within the technical range of the present invention. It is intended that the technical solution and its inventive 15 concept be replaced or modified equivalently with reference to the range of the invention.

Claims (2)

  1. Claims
    1. Lauryl thiodipropionate production plant, including: tank (F101), tank (F102), tank (Fl03), feedstock pump (J101-J103), transfer pump (J104-J107), dissolving
    5 tank (LI01), condensation kettle (DI01), washing tank (LI02), hydrolysis reactor (D102), filter (L103), tank (F104), tank (F105), feedstock pump (J108, J109), transfer pump (JI 10 ~ JI 13), esterification reactor (DI03), condenser (Cl01), neutralization kettle (DI04), pressure filter (LI04), crystallization kettle (DI05), centrifuge (LI05), dryer (L106); among them, tank (F101) is used to store acrylonitrile, tank (F102) is 10 used to store water, tank (Fl03) is used to store sulfuric acid, tank (Fl04) is used to store lauryl alcohol, tank (F104) is used to store acetone; among them, nominal volume of tank (F102) is 3.3-3.5 m3.
  2. 2. Lauryl thiodipropionate production plant, according to claim 1 wherein inner pot diameter of condensation kettle (D101) is 650-680 mm.
    15 3. Lauryl thiodipropionate production plant, according to claim 1 wherein inlet diameter of feedstock pump (JI 01) is 170-190 mm.
AU2018101927A 2017-12-16 2018-12-03 Lauryl thiodipropionate production plant Ceased AU2018101927A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2017113492794 2017-12-16
CN201711349279.4A CN108239002A (en) 2017-12-16 2017-12-16 The process units of thio-2 acid bay alcohol ester

Publications (1)

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AU2018101927A4 true AU2018101927A4 (en) 2019-01-24

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AU2018101927A Ceased AU2018101927A4 (en) 2017-12-16 2018-12-03 Lauryl thiodipropionate production plant

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AU (1) AU2018101927A4 (en)
GB (1) GB201722066D0 (en)

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CN108239002A (en) 2018-07-03
GB201722066D0 (en) 2018-02-14

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