Unlock instant, AI-driven research and patent intelligence for your innovation.

A reaction device and its application in continuous preparation of vegetable oil polyols

A technology of vegetable oil polyol and reaction device, which is applied in the chemical industry, can solve the problems of high performance requirements, high viscosity and low product quality, and achieves the effects of low performance requirements, solving the problem of pressure difference and good mixing effect.

Active Publication Date: 2022-01-28
NANJING TECH UNIV
View PDF33 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is a new method for continuous preparation of vegetable oil polyols which is proposed in view of the large viscosity, low product quality and high performance requirements of domestic pumps in the prior art for the continuous preparation of vegetable oil polyols in the scale-up production. equipment problem, providing a reaction device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A reaction device and its application in continuous preparation of vegetable oil polyols
  • A reaction device and its application in continuous preparation of vegetable oil polyols
  • A reaction device and its application in continuous preparation of vegetable oil polyols

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: reaction device

[0043] A reaction device consisting of 4 to 10 glass reactors connected in series; the body of each glass reactor is 500mL; wherein, such as image 3 As shown, a jacket 2 is provided outside the still body 1 of the reaction kettle; a partition 3 is provided inside the kettle body 1 of the reaction kettle, and several arcs are arranged between each adjacent two-layer partition 3 The baffle 4, the arc baffle 4 is fixed on the partitions 3 on both sides; the two sides of the reactor body 1 are provided with hanging lugs.

[0044] Wherein, the top of the kettle body 1 is respectively provided with a thermometer interface 5, a material inlet 8 and a pressure gauge interface 7; the bottom of the kettle body 1 is provided with a material outlet 6; An outlet 9, a heat medium inlet 10 is provided at the lower part of the side wall of the jacket, and an emptying port 11 is provided at the bottom of the jacket.

[0045] Wherein, the kettle body 1 ...

Embodiment 2

[0053] Dissolve 22.0L epoxy olive oil in 66.0L tetrahydrofuran to make component A, and dissolve 1.4L sulfuric acid in 26.4L water to make component B. At the same time, pump them into 8-stage series glass reaction kettles, kettles 1, 2, and 3 The reaction temperature is 40°C, the reaction temperature of kettle 4, 5, 6, and 7 is 45°C, the reaction temperature of kettle 8 is 50°C, and the injection rates of components A and B are 102.0mL / min and 32.8mL / min, respectively. min, the reaction time is 30min, the reaction product is left to separate the liquid, the water phase is recovered, and the oil phase is used with 5wt%Na 2 CO 3 The aqueous solution was washed to neutrality, and then liquid-separated and rotary steamed to obtain olive oil polyol with a hydroxyl value of 222 mg KOH / g and a viscosity of 5440 mPa·s.

Embodiment 3

[0055] Dissolve 22.0L of epoxy peanut oil in 110.0L of tetrahydrofuran to form component A, and dissolve 2.2L of fluoroboric acid in 48.4L of water to form component B. At the same time, pump them into 6-stage series glass reactors. The reaction temperature of kettle 1 is 65°C, the reaction temperature of kettles 2 and 3 is 70°C, the reaction temperature of kettles 4 and 5 is 75°C, the reaction temperature of kettle 6 is 80°C, the injection rates of components A and B are 143.1mL / min, 56.8mL / min, the reaction time is 15min, the reaction product is left to separate liquids, the water phase is recovered, and the oil phase is 5wt%Na 2 CO 3 The aqueous solution was washed to neutrality, and then subjected to liquid separation and rotary evaporation to obtain a peanut oil polyol with a hydroxyl value of 265 mg KOH / g and a viscosity of 5710 mPa·s.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
angleaaaaaaaaaa
radiusaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a reaction device and its application in the continuous preparation of vegetable oil polyols. The reaction device is composed of several reaction kettles connected in series; wherein, the outside of the reaction kettle body is provided with a jacket The interior of the kettle body of the reaction kettle is provided with partitions, and several arc baffles are arranged between each adjacent two layers of partitions, and the arc baffles are fixed on the partitions on both sides. The preparation process of the invention is easy to operate and control, and the reaction temperature of the multi-stage reaction kettle is intervalized, so that side reactions are effectively weakened. The design of the baffle in the production equipment effectively solves the problem of viscosity in the scale-up production of continuous preparation of vegetable oil polyols, and produces a good mixing effect. At the same time, the design of the baffle effectively solves the problem of pressure difference. It is shown that the pressure difference of the reactors at all levels can be controlled within 1 atmosphere, and the performance requirements of the pump are low.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a reaction device and its application in continuous preparation of vegetable oil polyols. Background technique [0002] With the increase of petroleum consumption, the decrease of petrochemical resource reserves and the continuous rise of petrochemical product prices, people pay more and more attention to the use of renewable resources to produce materials and fuels, and the use of renewable resources as raw materials for chemical products has attracted people's attention. Vegetable oil polyols are substitutes for petroleum-based polyols with outstanding environmental protection value. According to biosphere analysis data, compared with petroleum-based polyols, the overall energy consumption of vegetable oil polyols is reduced by 23%, the consumption of non-renewable resources is reduced by 61%, and the emission of greenhouse gases to the atmosphere is reduced by 36%....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/00B01J19/24C07C67/31C07C69/675
CPCB01J19/0053B01J19/245B01J19/0013B01J19/0006C07C67/31C07C69/675
Inventor 郭凯方正何伟陶俊杰刘成扣陈可泉陶惠新欧阳平凯
Owner NANJING TECH UNIV