Method and device for producing granulated sugar and refined sugar by membrane method

A production method and technology for refining sugar, which is applied in sucrose production, sugar production, sugar juice purification, etc., can solve problems such as single industrial operation mode, weak ability to resist market risks, and failure to satisfy consumers, etc., and achieve a solution Effects of sugar safety hazards

Pending Publication Date: 2018-07-06
GUANGXI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although my country is the third largest sugar producing country in the world, the product form is mainly white granulated sugar, the product structure and industrial

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  • Method and device for producing granulated sugar and refined sugar by membrane method
  • Method and device for producing granulated sugar and refined sugar by membrane method

Examples

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Embodiment 1

[0030] A method for membrane production of granulated sugar and refined sugar, comprising the following steps:

[0031] (1) Liming: add lime milk to the sugarcane mixed juice to adjust the pH to 7.4, prevent the sucrose in the sugarcane juice from being converted and lost under slightly acidic conditions, and obtain the limed sugarcane juice;

[0032] (2) Heating: heating the ash-added sugarcane juice to 95°C to obtain heated sugarcane juice;

[0033] (3) Coarse filtration: the heated sugarcane juice is successively filtered through a 40-order linear sieve and an 80-order curved sieve to obtain coarsely filtered sugarcane juice;

[0034] (4) Inorganic membrane ultrafiltration: after the coarsely filtered sugarcane juice is ultrafiltered through an inorganic membrane with a pore size of 0.02 μm, clarified sugarcane juice is obtained;

[0035] (5) Evaporation and concentration: the sugarcane clarified juice is evaporated and concentrated to 60°Brix to obtain syrup;

[0036] (6...

Embodiment 2

[0039] A method for membrane production of granulated sugar and refined sugar, comprising the following steps:

[0040] (1) Liming: add lime milk to the sugarcane mixed juice to adjust the pH to 7.6, prevent the sucrose in the sugarcane juice from being converted and lost under slightly acidic conditions, and obtain limed sugarcane juice;

[0041] (2) Heating: heating the ash-added sugarcane juice to 100°C to obtain heated sugarcane juice;

[0042] (3) coarse filtration: the heated sugarcane juice is successively filtered through a 60-order linear sieve and a 100-order curved sieve to obtain coarsely filtered sugarcane juice;

[0043] (4) Inorganic membrane ultrafiltration: after the coarsely filtered sugarcane juice is ultrafiltered through an inorganic membrane with a pore size of 0.2 μm, clarified sugarcane juice is obtained;

[0044] (5) Evaporation and concentration: the sugarcane clarified juice is evaporated and concentrated to 65°Brix to obtain syrup;

[0045] (6) Bo...

Embodiment 3

[0049] A method for membrane production of granulated sugar and refined sugar, comprising the following steps:

[0050] (1) Liming: add lime milk to the sugarcane mixed juice to adjust the pH to 7.5, prevent the sucrose in the sugarcane juice from being converted and lost under slightly acidic conditions, and obtain the limed sugarcane juice;

[0051] (2) Heating: heating the ash-added sugarcane juice to 98°C to obtain heated sugarcane juice;

[0052] (3) Coarse filtration: the heated sugarcane juice is successively filtered through a 50-order linear sieve and a 90-order curved sieve to obtain coarsely filtered sugarcane juice;

[0053] (4) Inorganic membrane ultrafiltration: the coarsely filtered sugarcane juice is obtained after the inorganic membrane ultrafiltration with a pore size of 0.01 μm to obtain clarified sugarcane juice;

[0054] (5) Evaporation and concentration: sugarcane clarified juice is evaporated and concentrated to 62°Brix to obtain syrup;

[0055] (6) Boil...

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Abstract

The invention provides a method for producing granulated sugar and refined sugar by a membrane method. The method comprises the following steps: adding ash, heating, carrying out coarse filtration, carrying out ultra-filtration by utilizing an inorganic membrane with the pore diameter of 0.02 to 0.2mu m, separating molasses and drying and recrystallizing to obtain membrane-method refined sugar. Adevice for producing the granulated sugar and the refined sugar by the membrane method comprises a sugarcane mixed juice source, an ash adding stirring tank, a heat exchanger, a linear sieve with thesize of 40 to 60 meshes, a bent sieve with the size of 80 to 100 meshes, inorganic membrane ultra-filtration equipment with the pore diameter of 0.02 to 0.2mu m, evaporation and concentration equipment, a first sugar boiling tank, a first crystallization-assisting box, first centrifuging and molasses separating equipment and first frying equipment, which are connected in sequence. In a granulatedsugar production process, less lime cream is used and any chemical auxiliary agent is not added, so that the problem of hidden dangers of sugar safety is solved.

Description

technical field [0001] The invention relates to the field of machinery, in particular to a method and device for producing granulated sugar and refined sugar by a membrane method. Background technique [0002] At present, in the production of sugarcane sugar in my country, most sugar enterprises still use the traditional sulfite method to produce farmland white granulated sugar, and need to add a large amount of chemical additives to sugarcane juice, such as CaO, SO 2 、H 3 PO 3 And polyacrylamide (PAM), etc., not only increase the processing cost of sugar, but also the chemical additives (especially SO 2 And the monomer of synthetic PAM) will also become the hidden danger of sugar safety. "Made in China 2025" clearly pointed out that the comprehensive implementation of green manufacturing is one of the important tasks for my country to achieve the goal of manufacturing a powerful country, and vigorously developing green processing technology is the key to solving the reso...

Claims

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Application Information

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IPC IPC(8): C13B20/02C13B20/16C13B25/00C13B30/02C13B30/06C13B40/00
CPCC13B20/02C13B20/16C13B20/165C13B25/00C13B30/02C13B30/021C13B30/06C13B40/00
Inventor 李凯谢彩锋杭方学李文陆海勤史昌蓉潘莉莉
Owner GUANGXI UNIV
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