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A kind of ring-opening reaction device of alkylene oxide

A technology of alkylene oxide and ring-opening reaction, applied in the preparation of ether from alkylene oxide, preparation of organic compounds, preparation of ether, etc., can solve the problem of unsuitable propylene oxide addition reaction, high requirements for public works, and increased equipment investment, etc. question

Active Publication Date: 2022-03-11
LIAONING OXIRANCHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the Buss process also has some disadvantages such as: high operating pressure, increased equipment investment; production of high molecular weight products needs to be carried out in batches; high requirements for public works; no tail gas treatment system, not suitable for the addition of propylene oxide reaction

Method used

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  • A kind of ring-opening reaction device of alkylene oxide
  • A kind of ring-opening reaction device of alkylene oxide
  • A kind of ring-opening reaction device of alkylene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] First rectifying column 10 is installed tray, leak test and pressure-holding guarantee device airtightness afterwards; In reboiler 14, add the butyl alcohol of 10kg and the butanol of 10kg, N 2 Replace the tower 3 to 5 times, and maintain the tower pressure at 0.16 MPa after the completion; the raw material tank is filled with ethylene oxide and n-butanol solution with 10% sodium butoxide content respectively.

[0050] Warming up the reboiler 14, the butanol is heated and vaporized, and operates in full reflux, and the pressure is maintained at 0.16 MPa through the automatic adjustment and control of the pressure stabilizing-back pressure valve. After running stably for 1 hour, each tray of the catalytic rectification tower 10 is covered with butanol.

[0051] The n-butanol solution of the initiator is pumped into the upper part of the rectification column 10 through the feed inlet of the initiator at an accurate metering rate of 8 ml / min. When the alcohol feed line wa...

Embodiment 2

[0071] First rectifying column 10 is installed tray, leak test afterwards and pressure-holding guarantees device airtightness; In reboiler 14, add 10kg ethylene glycol methyl ether and 10kg methyl alcohol, N 2 Replace the tower 3 to 5 times, and maintain the tower pressure at 0.50 MPa after the completion; the raw material tank is filled with ethylene oxide and methanol solution with a content of 10% sodium methoxide.

[0072] Raise the temperature of the reboiler 14, the methanol is heated and vaporized, and the total reflux operation is performed, and the pressure is maintained at 0.50 MPa through the automatic adjustment and control of the pressure stabilizing-back pressure valve. After running stably for 1 hour, methanol is distributed in the column section of reaction section 12.

[0073] The initiator methanol solution is injected into the upper part of the rectification column 10 through the initiator feed port with 22ml / min precise metering by the pump, and when the al...

Embodiment 3

[0086] Filling is installed to rectifying column 10, leak test and pressure keeping ensure device airtightness afterwards; In reboiler 14, add 20kg ethylenediamine, N 2 Replace the tower 3 to 5 times, and maintain the pressure of the tower at 0.20MPa after the end; fill the raw material tank with ethylene oxide and the initiator ethylenediamine respectively.

[0087] The reboiler 14 is heated up, ethylenediamine is vaporized by heat, and the total reflux operation is performed, and the pressure is maintained at 0.20 MPa through the automatic adjustment and control of the pressure stabilizing-back pressure valve. After running stably for 1 hour, ethylenediamine is distributed in the column section of the reaction section 12.

[0088]Ethylene oxide is pumped into the lower part of the rectification tower 10 via the alkylene oxide feed port with 6ml / min accurate metering by the pump. When the content of hydroxyethylethylenediamine in the tower tank is detected to be close to 60%,...

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Abstract

The invention provides a ring-opening reaction device of alkylene oxide, comprising: a rectification tower and a tubular reactor, wherein the rectification tower includes a reaction section, a rectification section and a stripping section; the reaction section is used to provide The initiator and alkylene oxide are reacted; the rectification section is connected with the tubular reactor, and the unreacted initiator and alkylene oxide in the reaction section enter the tubular reactor through the rectification section. The reactor reacts. The ring-opening reaction device of alkylene oxide in one embodiment of the present invention improves the conversion rate, selectivity and safety of the ring-opening reaction process of alkylene oxide.

Description

technical field [0001] The invention relates to an alkylene oxide ring-opening reaction device, in particular to an alkylene oxide ring-opening reaction device which can improve the conversion rate, selectivity and safety of the alkylene oxide ring-opening reaction. Background technique [0002] Alkoxylated products are excellent solvents and cleaning agents, widely used in coatings, paints, inks, resins and other industrial fields. In industry, the initiator and alkylene oxide are usually used as raw materials to synthesize alkoxylated products under the action of a catalyst. This is a special type of reaction (alkoxylation reaction) with a strong exothermic feature. At the same time, because the reactant alkylene oxide is very active, explosive and easy to decompose, the safety requirements for the production device are very high. [0003] At present, the reaction production technology used in the field of alkoxylation (ethyl / propoxylation) production at home and abroad i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C41/03C07C43/13C07C213/04C07C217/08
CPCC07C41/03C07C213/04C07C43/13C07C217/08
Inventor 董振鹏朱建民刘兆滨贾宁
Owner LIAONING OXIRANCHEM INC