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Efficient lime clarifier for sugar solution and its prepn and use

A production method and clarifier technology, applied in sugar production, sugar juice purification, application, etc., can solve the problems of low effective CaO content, low lime utilization rate, and poor quality of sugar solution, so as to achieve high utilization rate and reduce The effect of evaporative steam consumption and fast response speed

Inactive Publication Date: 2006-08-02
黄永春 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is: the above-mentioned hazards caused by the incomplete lime emulsification, low effective CaO content, many ash particles and serious hysteresis reaction in the existing common lime clarifier, and incomplete lime decontamination, resulting in lime utilization To solve the problem of low efficiency and poor quality of sugar solution, provide a high-efficiency lime clarifier for sugar with high effective content of CaO, fast precipitation reaction speed, thorough lime digestion and high lime utilization rate, which can effectively improve the clarification effect and improve the quality of sugar juice. And preparation method and application method in sugar solution clarification

Method used

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  • Efficient lime clarifier for sugar solution and its prepn and use

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A high-efficiency lime clarifier for sugar, the high-efficiency active lime clarifier is a powdery lime compound, the content of each component in the compound is calculated as:

[0072] Effective CaO≥85% MgO≤4.5% SiO 2 ≤2.0%

[0073] Fe 2 o 3 ≤0.3% Al 2 o 3 ≤0.5% CaSO 4 ≤1.0%

[0074] Sucrose≤1×10 -3 % NaCl≤1×10 -3 %

[0075] The physical and chemical indicators are as follows:

[0076] Activity 250~300mL

[0077] Particle size≤125μm

Embodiment 2

[0079] The preparation method of above-mentioned high-efficiency lime clarifying agent for sugar comprises the following steps:

[0080] a, material preparation: take the following component raw materials in proportion for subsequent use, and the content of each component is calculated in parts by weight:

[0081] Limestone-CaCO 3 100 parts by weight

[0082] Industrial salt-NaCl 0.05 parts by weight

[0083] 10 parts by weight of ordinary industrial coal

[0084] b. Calcination:

[0085] Put the raw materials of the above components into a lime kiln and calcinate at 900°C-1250°C for 2-6 hours;

[0086] c. Pulverization: Put the calcined quicklime into a mill and pulverize it so that its particle size is less than 125 μm;

[0087] d. Classification: The pulverized quicklime is classified by a classifier, and the particle size is less than 125 μm, which is the high-efficiency lime clarifier for sugar of the present invention.

[0088] As a transformation of the...

Embodiment 3

[0092] The method for using the high-efficiency lime clarifier for sugar described in claim 1 in clarifying the sugar solution comprises making milk of lime, adding milk of lime, neutralization process, and said making milk of lime comprises the following steps:

[0093] A. The first step of elimination:

[0094] Put the high-efficiency lime clarifier for sugar into the first disinfection tank, add 60°C hot water according to the ratio of high-efficiency lime clarifier for sugar: water=100 parts by weight: 100 parts by weight, and stir evenly;

[0095] B. The second step of cancellation:

[0096]Take out the lime milk from the first disinfection tank, put it into the second disinfection tank, add a certain amount of cold water at 30°C, stir, and dilute the lime milk to 8-20Be;

[0097] As a transformation of the embodiment of the present invention, in the first step of elimination and process, the ratio of high-efficiency lime clarifying agent for sugar and water can also be ...

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Abstract

The present invention is efficient lime clarifier for sugar solution and it preparation and use, and relates to sugar production technology. The lime clarifier as powdered lime compound consists of CaO not less than 85 wt%, MgO not more than 4.5 wt%, SiO2 not more than 2.0 wt%, Fe2O3 not more than 0.3 wt%, Al2O3 not more than 0.5 wt%, CaSO4 not more than 1.0 wt% and cane sugar and NaCl not more than 0.001 wt%. It has the physical and chemical indexes of activity 250-300 mL and granularity not greater than 125 microns. The lime clarifier is prepared through the steps of preparing material, calcining, crushing and sieving. It has the advantages of high activity, high effective CaO content, fast deposition reaction speed, complete lime slaking, high lime utilization rate, high sugar juice clarifying effect and simple preparation process.

Description

Technical field: [0001] The invention relates to a sugar production technology, that is, a sugar liquid clarifier and its preparation method, and the application of the sugar liquid clarifier in the process of sugar liquid clarification. Background technique: [0002] At present, the methods of clarifying sugar liquid in sugar factories mainly adopt two kinds of sulfurous acid method or carbonic acid method. Their clarification mechanism is to add milk of lime to the sugar liquid, and then pass through SO 2 or CO 2 Gas, therefore, quicklime is the most commonly used fining agent in sugar factories and it produces several important chemical reactions in sugar juice. In the clarification process, lime is added to cane juice through lime milk, and SO 2 , Phosphoric acid forms calcium sulfite precipitation and calcium phosphate precipitation to remove the colloids and pigments in the sugar juice by adsorption. Therefore, the quality of milk of lime directly affects the adsorp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13D3/00C13B20/00
Inventor 黄永春蓝胜宇张鲁宾梁逢海
Owner 黄永春
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