Recovery method of catalyst triethylamine in acesulfame potassium production

A technology of acesulfame potassium and recovery method, which is applied in the field of recovery of catalyst triethylamine in the production of acesulfame potassium, which can solve the problems of environmental pollution and low recovery rate, and achieve the effects of reducing ammonia content and reducing the difficulty of wastewater treatment

Active Publication Date: 2014-12-10
ANHUI JINGHE IND
View PDF2 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the low recovery rate and environmental pollution problem in the recovery of catalyst triethylamine in the production of existing acesulfame potassium, and provide a method for recovery of catalyst triethylamine in the production of acesulfame potassium

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
  • Recovery method of catalyst triethylamine in acesulfame potassium production
  • Recovery method of catalyst triethylamine in acesulfame potassium production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method for recovering catalyst triethylamine in the production of acesulfame potassium, which is mainly characterized in that it comprises the following steps ：

[0016] a. Preheat the waste acid (65-75°C) by passing the cold waste acid generated in the production through the pump, flow meter, and waste acid heater (65-75°C) for gas-liquid separation. The steam is dichloromethane and cooled by brine Recycling, as raw material for the production of acesulfame potassium; while the hot acid liquid is sent to the hot acid storage tank for use;

[0017] b. Mix the mother liquid water and stone powder (calcium carbonate) according to the ratio of 3:2.6 into the batching machine for stirring, mix evenly and then pump into the neutralization tank; then put about 6800 liters of hot acid in the hot acid storage tank at a speed of 20m3 / t Pumped into the neutralization tank, the mixture of hot acid, mother liquor, water and stone powder is neutralized at a ratio of 5.6:6.8, th...

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 belongs to the technical field of acesulfame potassium production and relates to a recovery method of catalyst triethylamine in the acesulfame potassium production. A one-step one-kettle reaction is changed into a two-kettle three-step reaction, and the purpose of recovering triethylamine is achieved by the following steps: (1) preheating, and recovering methylene dichloride; (2) carrying out neutralization reaction; (3) reacting in an alkali separation kettle and dropwise adding sulfuric acid; (4) carrying out heat preservation and water distribution. Compared with a traditional method, the recovery method has the advantages that the recovery rate is greatly improved, the labor intensity of workers is reduced at the same time, and produced wastes also reach the environmental treatment standards.

Description

technical field [0001] The invention belongs to the technical field of acesulfame potassium production and relates to a method for recovering catalyst triethylamine in the production of acesulfame potassium. Background technique [0002] Acesulfame potassium is a sweetener commonly used in the market today, widely used in the food and beverage industry, and has a broad market prospect. As the main catalyst for the production of acesulfame potassium, triethylamine has huge market potential. Today, when safety, environmental protection, and efficiency dominate the fate of enterprises, optimizing and integrating resources, saving energy and reducing consumption, and technological innovation and transformation are the needs of vigorous development of enterprises. Judging from the market development in recent years, the application fields of acesulfame potassium are constantly expanding, the market demand is increasing, and foreign trade and export sales are also on the rise. O...

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): C07C211/05C07C209/82C07C19/03C07C17/38C01F11/46
Inventor 周睿贺玉陈月安
Owner ANHUI JINGHE IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap