阅读说明：本技术 一种安赛蜜生产中重结糖的脱色方法 (Decolorizing method of heavy sugar in acesulfame potassium production ) 是由 陈永旭 杨金树 刘瑞元 于 2019-11-16 设计创作，主要内容包括：本发明涉及一种安赛蜜生产中重结糖的脱色方法,其特征在于包括以下步骤：(1)向煮料釜加重结糖和去离子水,控制重结糖与去离子水质量比1：1-1.3,搅拌、加热至85-95℃；(2)脱色柱塔内预先加入颗粒状活性炭500Kg/台,糖液以30-40M<Sup>3</Sup>/h送入脱色柱塔,脱色后糖液返至煮料釜,维持温度一直在85-95℃；(3)控制精滤机夹套水温95-100℃,将糖液与活性炭混合液以1.2–1.6 M<Sup>3</Sup>/h送入精滤机,滤出液澄清后送入结晶工段结晶。本发明优点：操作简单、降低劳动强度；原料利用率更高,活性炭可热解再生,更清洁环保；通过强制循环泵循环升温,煮料时间缩短至少半小时,为工段连续生产提供保障,生产效率大幅提高；能在线操作,有效减少杂质,提高品质。(The invention relates to a method for decoloring heavy crusted sugar in acesulfame potassium production, which is characterized by comprising the following steps of: (1) adding heavy sugar and deionized water into the material boiling kettle, and controlling the mass ratio of the heavy sugar to the deionized water to be 1: 1 to 1.3, stirring and heating to 85 to 95 ℃; (2) 500Kg of granular activated carbon per column is added in advance into the decolorizing column tower, and the sugar solution is added in an amount of 30-40M 3 Feeding the sugar solution into a decoloring column tower, returning the decolored sugar solution to a material boiling kettle, and maintaining the temperature at 85-95 ℃; (3) controlling the temperature of jacket water of the fine filter to 95-100 ℃, and mixing the sugar solution and the active carbon at a ratio of 1.2-1.6M 3 And h, sending the filtrate into a fine filter, and sending the filtrate into a crystallization working section for crystallization after the filtrate is clarified. The invention has the advantages that: the operation is simple, and the labor intensity is reduced; the raw material utilization rate is higher, and the activated carbon can be pyrolyzed and regenerated, so that the method is cleaner and more environment-friendly; the material boiling time is shortened by at least half an hour through the circulating temperature rise of the forced circulating pump, so that the continuous production of the working sections is guaranteed, and the production efficiency is greatly improved; can be operated on line, effectively reduces impurities and improves the quality.)

1. A method for decoloring heavy crusted sugar in acesulfame potassium production comprises a boiling kettle and a fine filter, and is characterized in that the following devices are adopted: the outlet of the boiling kettle is respectively connected to a decolorizing column and a fine filter through pipelines, and the outlet of the decolorizing column is connected to the inlet of the boiling kettle through a pipeline;

the method comprises the following steps:

(1) adding the heavy crud sugar and deionized water into the material boiling kettle, and controlling the mass ratio of the heavy crud sugar to the deionized water to be 1: 1-1.3, starting a material boiling kettle for stirring, opening a steam valve, and introducing steam to heat the material boiling kettle to 85-95 ℃;

(2) adding 500Kg of granular activated carbon per tower into a decolorizing column, and starting a circulating pump to circulate 30-40M of sugar solution in a material boiling kettle³Feeding the sugar solution into a decoloring column tower for decoloring in a volume of/h, returning the decolored sugar solution to a material boiling kettle, and maintaining the temperature of the material boiling kettle at 85-95 ℃;

(3) controlling the temperature of hot water in a jacket of the fine filter to be 95-100 ℃, starting a circulating pump, and controlling the mixture of the sugar liquid and the active carbon in the boiling kettle to be 1.2-1.6M³The volume of the filtrate per hour is sent to a fine filter for filtration, and the obtained filtrate is sent to a crystallization working section for crystallization after being clarified.

2. The method for decoloring heavy crusted sugar in acesulfame potassium production according to claim 1, wherein the method comprises the following steps: in the step (2), 3 decolorizing columns are preferably connected in series.

Technical Field

The invention belongs to the technical field of acesulfame potassium production, and relates to a method for decoloring heavy crusted sugar in acesulfame potassium production.

Background

The traditional decolorization process in the production of acesulfame potassium is shown in figure 1, and the decolorization section in the current acesulfame potassium production process uses powdered activated carbon to carry out recrystallization decolorization. Adding the heavy crusted sugar into a material boiling kettle from a bin, manually adding active carbon for boiling, keeping the temperature of the material boiling to be more than 95 ℃, filtering the material boiling kettle by a coarse filter and a fine filter after preserving the heat for one hour, and entering a fine crusting working section. The whole process has long operation time, needs manual auxiliary material feeding, wastes time and labor, has higher production cost, serious raw material waste, discontinuous production and lower decolorization rate, and cannot obtain high-quality products.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a method for decoloring heavy crusted sugar in acesulfame potassium production.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a method for decoloring heavy crusted sugar in acesulfame potassium production comprises a boiling kettle and a fine filter, and is characterized in that the following devices are adopted: the outlet of the boiling kettle is respectively connected to a decolorizing column and a fine filter through pipelines, and the outlet of the decolorizing column is connected to the inlet of the boiling kettle through a pipeline;

the method comprises the following steps:

(1) adding the heavy crud sugar and deionized water (or decolorization mother liquor) into a material boiling kettle, and controlling the mass ratio of the heavy crud sugar to the deionized water to be 1: 1-1.3, starting a material boiling kettle for stirring, opening a steam valve, and introducing steam to heat the material boiling kettle to 85-95 ℃;

(2) adding 500Kg of granular activated carbon per tower into a decolorizing column, and starting a circulating pump to circulate 30-40M of sugar solution in a material boiling kettle³Feeding the sugar solution into a decoloring column tower for decoloring in a volume of/h, returning the decolored sugar solution to a material boiling kettle, and maintaining the temperature of the material boiling kettle at 85-95 ℃;

(3) controlling the temperature of hot water in a jacket of the fine filter to be 95-100 ℃, starting a circulating pump, and controlling the mixture of the sugar liquid and the active carbon in the boiling kettle to be 1.2-1.6M³The volume of the filtrate per hour is sent to a fine filter for filtration, and the obtained filtrate is sent to a crystallization working section for crystallization after being clarified.

Further, in the step (2), it is preferable that 3 decoloring columns are connected in series.

In the invention, only a small amount of active carbon exists in the mixed liquid of the sugar liquid and the active carbon, a coarse filter is removed, the clarified sugar liquid can be obtained only by fine filtration, the manual labor of feeding the powdery active carbon into the material boiling kettle is reduced, the manual control is effectively avoided, the online operation can be realized, the post personnel is simplified, the impurities in the product can be effectively reduced, and the product quality is improved.

The invention has the advantages that:

1. the decoloring method is mature and reliable, reduces the operation complexity and reduces the labor intensity of personnel;

2. compared with the original decoloring method, the decoloring method has higher utilization rate of raw materials, and the replaced activated carbon particles are pyrolyzed and regenerated, so that the decoloring method is cleaner and more environment-friendly, saves a large amount of raw material cost for enterprises, and has obvious economic benefit;

3. the process circularly heats by the forced circulation pump, shortens the material boiling time by at least half an hour compared with the prior art, provides guarantee for continuous production of front and rear working sections, and greatly improves the production efficiency;

4. the online operation can be realized, the impurities in the product can be effectively reduced, and the product quality is improved.

Drawings

FIG. 1 is a flow chart of the decolorization process of heavy sugar in acesulfame potassium production according to the present invention;

FIG. 2 is a process diagram of the decolorization of heavy sugar in the production of acesulfame K.

Detailed Description

With reference to fig. 1, a method for decoloring heavy sugar in acesulfame potassium production comprises the following specific implementation steps: