Method and device for continuously and stably preparing acesulfame potassium crystal

A kind of acesulfame potassium and stable technology, which is applied in the field of preparing acesulfame potassium crystals, can solve the problems of long crystallization time, many equipment crossings, unstable quality, etc., and achieve the effect of high degree of industrialization and uniform crystal form

Active Publication Date: 2018-12-21
山东亚邦化工科技有限公司
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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 crysta

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  • Method and device for continuously and stably preparing acesulfame potassium crystal

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specific Embodiment

[0028] The acesulfame potassium solution enters the decompression evaporator from the feed pipe, and forms a circulation under the action of the heat exchanger. The temperature of the acesulfame potassium solution is controlled at 80°C, and the flow control valve of the heating medium of the heat exchanger is adjusted by the temperature controller. The moisture in the material is evaporated and removed under vacuum, and the vacuum degree is controlled at -0.075MPa. The level gauge signal in the reduced pressure evaporator controls the feed valve. Set a liquid online density real-time monitor at 2 / 3 of the bottom of the cone in the decompression evaporator, and the density is 1.25g / cm 3 At this time, the signal is sent to the delivery pump motor to start, and the collected concentrated liquid is sent to the crystallization tank. The crystallization tank is composed of agitator, external circulation pump and cooler. The crystallization temperature of the material in the crystall...

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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...

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Application Information

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IPC IPC(8): B01D9/02C07D291/06
CPCB01D9/0022B01D9/0059B01D9/0063C07D291/06
Inventor 张照明袁利明
Owner 山东亚邦化工科技有限公司
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