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Anti-caking acesulfame potassium and preparation method thereof

A technology of acesulfame potassium and acesulfame acid, applied in the field of preparation of acesulfame potassium, can solve the problems of easy entry of foreign matter, low production efficiency, increased cost and the like, and achieves the advantages of preventing caking, reducing cost and improving production efficiency. Effect

Pending Publication Date: 2022-04-29
NANTONG ACETIC ACID CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most manufacturers adopt the method of cooling the cold material with the open mouth, breaking it into pieces after agglomeration, and then packaging it. Although it can reduce the agglomeration of acesulfame honey in the short term, it has the following disadvantages: (1) Foreign matter is easy to enter during the process of opening the cold material , which affects the use of customers; (2) The production efficiency of the crushing and repackaging process is low and the cost is increased

Method used

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  • Anti-caking acesulfame potassium and preparation method thereof
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  • Anti-caking acesulfame potassium and preparation method thereof

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preparation example Construction

[0039] A kind of preparation method of anti-caking acesulfame potassium provided by the invention comprises the following steps:

[0040] (1) Provide raw materials for acesulfame potassium;

[0041] (2) In a sealed desiccator, fully contact with acesulfame-potassium with nitrogen, so that the drying weight loss of the dried acesulfame-potassium is ≤0.05%;

[0042] (3) The dried acesulfame potassium enters the packaging process to obtain the finished product.

[0043] In a specific embodiment, the volume fraction of nitrogen used in step (2) is ≥99.9%, which can also be called pure nitrogen. Moisture content in pure nitrogen is 15ppm (mass percentage composition 0.0015%), because moisture is almost absent in pure nitrogen, without other impurity again, the moisture (loss on drying) of acesulfame potassium raw material can be reduced to 500ppm after being treated by pure nitrogen (mass percentage content 0.05%) below, no agglomeration phenomenon is seen in storage 3 years unde...

Embodiment 1

[0085] The acesulfame potassium raw material that is 0.8% by the loss on drying prepared by the above-mentioned method enters the box type dryer of sealing continuously at 15 ℃; Above-mentioned acesulfame potassium raw material and temperature are 20 ℃, and pressure is the pure nitrogen of 0.2Mpa Volume fraction ≥ 99.9%) full contact, the volume ratio of acesulfame potassium raw material and pure nitrogen is 1:1, the residence time is 10min, the drying weight loss of the dried acesulfame potassium is 0.02%; the dried acesulfame potassium The finished product of acesulfame potassium is obtained from the conveyor belt into the packaging process, and no caking phenomenon has been seen in 3 years of storage at room temperature.

Embodiment 2

[0087] The acesulfame potassium raw material that is 0.5% by the loss on drying prepared by the above-mentioned method enters the box type drier of sealing continuously at 20 ℃; Above-mentioned acesulfame potassium raw material and temperature are 30 ℃, and pressure is the pure nitrogen of 0.4Mpa ( Volume fraction ≥ 99.9%) is fully contacted, the volume ratio of acesulfame potassium to pure nitrogen is 1:5, the residence time is 30min, and the drying weight loss of the dried acesulfame potassium is 0.005%; the dried acesulfame potassium is obtained by The conveyor belt enters the packaging process to obtain the finished product of acesulfame potassium, which has been stored at room temperature for 3 years without agglomeration.

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Abstract

The invention relates to anti-caking acesulfame potassium and a preparation method thereof. The preparation method comprises the following steps: (1) providing an acesulfame potassium raw material; (2) in a sealed dryer, nitrogen is in full contact with acesulfame potassium; and (3) packaging the dried acesulfame potassium finished product. Wherein the weight loss on drying of the acesulfame potassium dried in the step (2) is less than or equal to 0.05%. According to the method, the acesulfame potassium raw material is purged by adopting nitrogen, so that the drying weight loss of acesulfame potassium is controlled, and the occurrence of the acesulfame potassium caking phenomenon can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing anti-caking acesulfame potassium. Background technique [0002] Acesulfame potassium, the chemical name is 6-methyl-1,2,3-oxathiazin-4(3)-one-2,2-potassium dioxide, commonly known as acesulfame potassium, AK sugar (Acesulfame-K) . [0003] In a conventional acesulfame potassium production process, sulfamic acid is reacted with an amine (eg, triethylamine) to form an ammonium sulfamate. The ammonium sulfamate is then reacted with diketene to form the acesulfame triethylamine salt. Acesulfame potassium is cyclized, hydrolyzed and neutralized to form acesulfame potassium. The patent with application number 201780001641.0 specifically discloses the production method of acesulfame potassium. [0004] Typically, the acesulfame triethylamine salt is cyclized to form a cyclic sulfur trioxide adduct by reaction with sulfur trioxide in an inorganic or o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D291/06
CPCC07D291/06
Inventor 朱小刚庆九俞新南刘芳
Owner NANTONG ACETIC ACID CHEM