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

A method and system for recovering and treating aspartame production mother liquor

A mother liquid recovery and treatment method technology, applied in natural water treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of high energy consumption, high salt content, difficult treatment, etc., to achieve simple system, High resource recovery rate and low energy consumption

Active Publication Date: 2016-06-01
SHAANXI LANSHEN SPECIAL RESIN
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The production methods of aspartame in China are mainly the internal anhydride method and the lactone method. The condensation mother liquor produced by these two methods contains a certain amount of aspartame and phenylalanine. Due to the large production volume and the mother liquor Contains organic matter and high salt content, so it faces difficult problems to deal with. Among them, the content of valuable organic matter such as aspartame is 0.9-1.4%, and the content of phenylalanine can reach 0.3-0.6%. The traditional "mother liquor concentration "Recycling" process not only consumes a lot of energy, but also affects the quality of aspartame after recycling
[0004] In the prior art, there is a method of using membrane to treat aspartame production wastewater, but this method limits its application due to the harsh conditions of membrane use.

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 method and system for recovering and treating aspartame production mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: a certain factory produces the aspartame condensation mother liquor that is slightly yellow, and the dipeptide content is 1.0%, and the phenylalanine content is 0.5%, and the implementation steps are as follows:

[0028] 1. Put 60ml of LS-206 resin into the iron clamp fixed resin column (Φ20ⅹ300mm), and pass 500ml of the filtered condensation mother liquor through the resin bed at a flow rate of 30ml / h (0.5BV / h) at 5°C to absorb the water Aspartame was not detected, and the content of phenylalanine was 0.02%.

[0029] 2. Rinse the resin with 120ml (2BV) of water at about 25-30°C to remove the condensation mother liquor and inorganic salts remaining in the resin channels.

[0030] 3. Drain the resin column until the liquid does not flow out, use 60°C, 120ml (2BV), 4% NaOH solution to elute the resin at a rate of 30ml / h (0.5BV / h), and collect all the eluted The content of aspartame in the attached liquid and the desorbed liquid is 3.3%, the content of pheny...

Embodiment 2

[0033] The aspartame condensation mother liquor produced by a factory is slightly yellow, the content of dipeptide is 1.0%, and the content of phenylalanine is 0.5%. The implementation steps are as follows:

[0034] 1. Put 60ml of LS-206 resin into the resin column (Φ20ⅹ300mm) fixed by iron clips, and pass 500ml of the filtered condensation mother liquor through the resin bed at a flow rate of 60ml / h (1BV / h) at 15°C to absorb the water. Spartame was not detected, and the content of phenylalanine was 0.02%.

[0035] 2. Rinse the resin with 180ml (3BV) of water at about 25-30°C to remove the condensation mother liquor and inorganic salts remaining in the resin channels.

[0036] 3. Drain the resin column until the liquid does not flow out, then use 80°C, 180ml (3BV), 2% NaOH solution to elute the resin at a rate of 60ml / h (1BV / h), and collect and desorb all Liquid, the content of aspartame in the desorption liquid is 3.3%, the content of phenylalanine is 1.5%, and the comprehen...

Embodiment 3

[0039] The aspartame condensation mother liquor produced by a factory is slightly yellow, the content of dipeptide is 1.0%, and the content of phenylalanine is 0.5%. The implementation steps are as follows:

[0040] 1. Put 60ml of LS-206 resin into the resin column (Φ20ⅹ300mm) fixed by iron clips, and pass 500ml of the filtered condensation mother liquor through the resin bed at a flow rate of 60ml / h (1BV / h) at 50°C to absorb the water. Spartame was not detected, and the content of phenylalanine was 0.02%.

[0041] 2. Rinse the resin with 240ml (4BV) of water at about 25-30°C to remove the condensation mother liquor and inorganic salts remaining in the resin channels.

[0042] 3. Drain the resin column until the liquid does not flow out, then use 90°C, 240ml (4BV), 5% KOH solution to elute the resin at a rate of 120ml / h (2BV / h), and collect and desorb all Liquid, the content of aspartame in the desorption liquid is 3.3%, the content of phenylalanine is 1.5%, and the comprehen...

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 provides an aspartame production mother solution recycling and treating method and system. The aspartame production mother solution recycling and treating system comprises an alkali liquid storage pot, a heat exchanger, a macroporous adsorbent resin column, an eluting solution storage pot, a filter and a sedimentation tank, wherein the alkali liquid storage pot is communicated with an eluting solution inlet of the macroporous adsorbent resin column; an eluting solution outlet of the macroporous adsorbent resin column is communicated with the eluting solution storage pot; the sedimentation tank is communicated with a condensation mother solution inlet of the macroporous adsorbent resin column through the filter; in the use process, a clarified mother solution of an aspartame condensation mother solution which passes through the sedimentation tank and the filter passes through a fixed bed adsorption column filled with a macroporous styrene adsorption column, so that aspartame and phenylalanine are adsorbed on adsorbent resin and an inorganic salt is not adsorbed on the resin; the adsorbed saturated resin is eluted by a hot alkali solution and an eluting solution is stored in the eluting solution storage pot to be used as a reaction medium and a raw material; the aspartame and the phenylalanine in the system are effectively recycled to realize the unification of wastewater management and resource utilization.

Description

technical field [0001] The invention relates to the field of food production, in particular to a method and system for recovering and treating aspartame production mother liquor. Background technique [0002] The chemical name of aspartame is L-aspartame-L-phenylalanine methylester (APM=L-aspartyl-L-phenylalaninemethylester), which is composed of L-phenylalanine (or L-methylphenylalanine Ester) and L-aspartic acid by chemical or enzyme-catalyzed reaction, is a sweetener about 200 times sweeter than sucrose, because it contains less calories to make people feel the sweetness of Aspen The amount of sweetener is so small that the calories contained in it can be ignored, so it is also widely used as a substitute for sucrose. [0003] The production methods of aspartame in China are mainly the internal anhydride method and the lactone method. The condensation mother liquor produced by these two methods contains a certain amount of aspartame and phenylalanine. Due to the large pr...

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): C02F9/02C02F103/36
Inventor 冯志军苟进锋邓茂盛孙冰杰
Owner SHAANXI LANSHEN SPECIAL RESIN