Method and device for continuously and stably preparing acesulfame potassium crystal

Abstract

The invention relates to a method and a device for continuously and stably preparing an acesulfame potassium crystal. The device comprises a decompressing evaporator, a heat exchanger, a crystal kettle, a scraper-type centrifugal machine and a mother liquor tank, wherein the decompressing evaporator is provided with the heat exchanger. The decompressing evaporator is communicated with the crystalkettle. The crystal kettle is communicated with the scraper-type centrifugal machine. The scraper-type centrifugal machine is communicated with the mother liquor tank. The mother liquor tank is communicated with the decompressing evaporator. The device for continuously and stably preparing the acesulfame potassium crystal is capable of solving a series of technical problems existing in an acesulfame potassium crystallization process that the process is tedious, multiple device crossings are existed, crystallization time is long, the crystal is non-uniform, quality is unstable and the like, andproviding a crystallizing device which is continuous in crystallization, uniform in crystal form, stable in technology quality, efficient in production, and high in industrialization degree, and capable of realizing remote control.

Description

technical field [0001] The invention provides a continuous and stable method and device for preparing acesulfame potassium crystals. Background technique [0002] Acesulfame K is an important sugar-free sweetener, its sweetness is 200 times that of sucrose, it has a good taste, and does not participate in the physiological metabolism in the human body, does not accumulate, and is beneficial to the quality of life of diabetic patients and obese people. It is an ideal, safe and economical food additive, which is widely used in daily chemical, food, beverage, pharmaceutical manufacturing and other aspects. At present, the production of acesulfame-K basically adopts the technological route using sulfamic acid and diketene as raw materials, and the reaction process includes synthesis, acylation, cyclization, hydrolysis and neutralization. Due to the addition of an appropriate amount of water in the hydrolysis process and the water washing process and the water produced in the ne...

AI Technical Summary

Problems solved by technology

[0006] The continuous and stable device for preparing acesulfame potassium crystals of the present invention solves a series of technical problems in the crystallization process of acesulfame potassium, such as cumbersome process, many equipment crossovers, long crystallization time, uneven crystals, and unstable quality, and provides a A process of continuous crystallization, uniform crystal form, stable quality and high-efficiency production, high degree of industrialization, crystallization device that can realize remote control

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