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

Device and method for removing trimethylamine in production process of glycine betaine

A technology of trimethylamine and betaine, applied in organic chemistry, purification/separation of amino compounds, etc., can solve problems affecting product quality, waste of resources, air pollution, etc., and achieve the goal of avoiding high ammonia nitrogen wastewater, avoiding waste of resources, and reducing costs Effect

Active Publication Date: 2014-01-22
QINGDAO UNIV OF SCI & TECH
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The defects and deficiencies in the above-mentioned existing separation technology are: the energy consumption of the evaporation separation process is relatively high; the removal of trimethylamine is not thorough, which affects the product quality; Wastewater, the content of trimethylamine in this wastewater is low, and it can only be discharged as high-ammonia nitrogen wastewater treatment, resulting in waste of resources; the evaporation process can easily cause trimethylamine to be discharged into the air, causing air pollution

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
  • Device and method for removing trimethylamine in production process of glycine betaine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The processing capacity of the feed liquid is 500g. After adding sodium hydroxide to adjust the pH to 10, the temperature reaches 55°C after being preheated by the preheater. The preheated feed liquid is passed into the stripping tower to remove trimethylamine, and the reflux ratio is controlled The concentration of trimethylamine in the production liquid at the top of the tower is 15.8%, the temperature is 41.5 °C, the temperature of the production liquid at the bottom of the tower is 85.5 °C, the content of trimethylamine is 3 ppm, and the removal rate of trimethylamine reaches 99.8%.

Embodiment 2

[0043] The processing capacity of the feed liquid is 1kg. After adding sodium hydroxide to adjust the pH to 10.5, the temperature reaches 65°C after being preheated by the preheater, and the preheated feed liquid is passed into the stripping tower for the removal of trimethylamine. is 10, the feeding position is the second plate, the reflux ratio is controlled to be 2, the concentration of trimethylamine in the top production liquid is 23.2%, the temperature is 40.8°C, the temperature of the bottom production liquid is 85.7°C, and the content of trimethylamine is 1ppm. The removal rate of trimethylamine reached 99.9%.

Embodiment 3

[0045] The processing capacity of the feed liquid is 5kg. After adding sodium hydroxide to adjust the pH to 10.5, the temperature reaches 60°C after being preheated by the preheater, and the preheated feed liquid is passed into the stripping tower for the removal of trimethylamine. reflux ratio is 2.5, the concentration of trimethylamine in the production liquid at the top of the tower is 21.5%, the temperature is 41.2°C, the temperature of the production liquid at the bottom of the tower is 85.7°C, the content of trimethylamine is 1ppm, and the trimethylamine content is 1ppm. The amine removal rate reaches 99.9%.

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

No PUM Login to View More

Abstract

The invention relates to a device for removing trimethylamine in the production process of glycine betaine through stripping, and a method for removing the trimethylamine in the production process of the glycine betaine by using the device. The device comprises the following components: a stripping tower (T), a reboiler (R), a preheater (C1), a condenser (C2) and a backflow tank (A). The method for removing the trimethylamine in the glycine betaine by using the stripping device comprises the following steps: adding sodium hydroxide into a glycine betaine material liquid, adjusting the pH value to be 10-11, firstly feeding the material liquid into the preheater (1), wherein the temperature at the material liquid outlet is 55-75 DEG C, feeding the preheated material liquid into the stripping tower (T) to remove the trimethylamine, collecting steam from the tower top and condensing by the condenser (C2) to obtain a trimethylamine solution, backflowing part of the solution to the stripping tower, collecting the other part to be used as the trimethylamine for next chemical synthesis reaction, collecting a material liquid which nearly contains no trimethylamine at the bottom of the tower, and feeding into a next procedure.

Description

【Technical field】 [0001] The invention belongs to the field of chemical separation and purification, and relates to the removal of trimethylamine in a betaine feed liquid containing trimethylamine, in particular to a stripping separation device and a method for removing trimethylamine in the feed liquid using the device. 【Background technique】 [0002] Betaine is a quaternary ammonium water-soluble alkaloid widely present in animal and plant tissues, and plays an important role in metabolism. It is the oxidation product of choline in organisms. Has been widely used in medicine, daily chemical and other fields. It can relieve stress, regulate osmotic pressure, increase appetite, stabilize microorganisms, prevent coccidiosis, reduce fat, and can also be used as a methyl donor, becoming a substitute for methionine and choline chloride; One of the most effective osmotic dissolving agents, it has an important substance metabolism effect, and can improve the palatability of the f...

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 Applications(China)
IPC IPC(8): C07C211/04C07C209/86
Inventor 朱兆友朱峰王英龙
Owner QINGDAO UNIV OF SCI & TECH