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Filter mud containing clean coal and preparation method thereof

A mud filtering and cleaning technology, applied in the field of clean briquette and its preparation, can solve problems such as failing to meet the quality requirements of clean briquette, and achieve the effects of improving sulfur fixation, reducing emissions, and protecting the environment

Inactive Publication Date: 2013-05-22
广西桂晟新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing research has not fully combined the comprehensive utilization of filter mud with the clean production of coal briquettes, and still fails to meet people's quality requirements for clean briquettes with high calorific value and low emissions.

Method used

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  • Filter mud containing clean coal and preparation method thereof
  • Filter mud containing clean coal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for preparing clean briquettes containing filter mud, comprising the following steps:

[0034] 1. Weigh respectively according to the weight ratio of raw material components: bituminous coal powder 25kg, filter mud 10kg, potassium nitrate 0.002kg, sodium chloride 0.1kg, pregelatinized starch 0.2kg, kaolin 0.5kg, polyvinyl alcohol 0.1kg , calcium hydroxide 0.6kg, sodium carbonate 0.03kg, ascorbic acid 0.003kg, ferrous sulfate 0.1kg;

[0035] 2. Mix pregelatinized starch and kaolin evenly to obtain mixture A;

[0036] 3. Add mixture A to bituminous coal powder and filter mud, stir and mix evenly to obtain mixture B;

[0037] 4. Add water accounting for 6% of the total weight of raw material components into the reactor, add polyvinyl alcohol, heat to 80°C, stir to dissolve completely, and then add potassium nitrate, sodium chloride, calcium hydroxide, sodium carbonate, Ascorbic acid and ferrous sulfate are stirred to make the mixture uniform, and mixed solution ...

Embodiment 2

[0041] A method for preparing clean briquettes containing filter mud, comprising the following steps:

[0042] 1. Weigh respectively according to the weight ratio of raw material components: lignite powder 35kg, filter mud 55kg, potassium nitrate 0.003kg, sodium chloride 0.2kg, pregelatinized starch 0.3kg, kaolin 0.8kg, polyvinyl alcohol 0.2kg, Calcium hydroxide 0.9kg, sodium carbonate 0.06kg, ascorbic acid 0.005kg, ferrous sulfate 0.125kg;

[0043] 2. Mix pregelatinized starch and kaolin evenly to obtain mixture A;

[0044] 3. Add mixture A to lignite powder and filter mud, stir and mix evenly to obtain mixture B;

[0045] 4. Add water accounting for 10% of the total weight of raw material components into the reactor, add polyvinyl alcohol, heat to 85°C, stir to dissolve completely, and then add potassium nitrate, sodium chloride, calcium hydroxide, sodium carbonate, Ascorbic acid and ferrous sulfate are stirred to make the mixture uniform, and mixed solution C is obtained;...

Embodiment 3

[0048] A method for preparing clean briquettes containing filter mud, comprising the following steps:

[0049] 1. Weigh respectively according to the weight ratio of raw material components: 70kg of anthracite powder, 15kg of coal gangue powder, 65kg of filter mud, 0.05kg of potassium nitrate, 0.6kg of sodium chloride, 2.8kg of pregelatinized starch, 3kg of refractory mud, kaolin 3kg, polyvinyl alcohol 0.5kg, calcium hydroxide 1.5kg, sodium carbonate 0.5kg, ascorbic acid 0.02kg, ferrous sulfate 0.3kg;

[0050] 2. Mix pregelatinized starch, refractory clay and kaolin evenly to obtain mixture A;

[0051] 3. Add mixture A to anthracite powder, coal gangue powder and filter mud, stir and mix evenly to obtain mixture B;

[0052] 4. Add water accounting for 10% of the total weight of raw material components into the reactor, add polyvinyl alcohol, heat to 83°C, stir to dissolve completely, and then add potassium nitrate, sodium chloride, calcium hydroxide, sodium carbonate, Ascorb...

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Abstract

The invention discloses filter mud containing clean coal and a preparation method thereof. The filter mud containing clean coal comprises braize, filter mud, a combustion synergist, a composite binder, a sulphur-fixing agent and a deodorant. The filter mud is obtained by a cleaning process in a sulfurous method in the sugar industry. The combustion synergist is potash nitrate and sodium chloride. The composite binder is pregelatinized starch, clay and polyvinyl alcohol. The sulphur-fixing agent is calcium hydroxide and sodium carbonate. The deodorant is ascorbic acid and ferrous sulfate. According to the invention, filter mud of a sugar plant is adequately utilized, so that secondary pollution to the environment is avoided and waste is turned to wealth. The clean coal prepared has the advantages of inflammability, higher thermal efficiency, small discharge of harmful gas, high cold and hot strengths, good waterproof performance, low production cost, environmental-friendliness and the like.

Description

technical field [0001] The invention relates to the technical field of coal processing, in particular to a clean molded coal containing filter mud and a preparation method thereof. Background technique [0002] Filter mud is one of the bulk by-products obtained from the clarification process in the process of sugar production in the sugar industry. Among them, in the dry filter sludge obtained by the sulfite clarification process, the total amount of organic matter can reach about 80%, mainly including 5-14% of lipids (cane wax and sucrose resin), 15-30% of fiber, and 5-15% of sugar , 5-15% crude protein, 9-20% total ash, and contains SiO 2 5.25%, Al 2 o 3 1.3%, Fe 2 o 3 1.13% for CaO, 6.9% for CaO, and 1.3% for MgO. According to reports, sugarcane fat, sugarcane wax and chlorophyll can be extracted from filter mud, or sterols, octacosanol, etc. can be further refined from the crude extract, but the extraction steps are complicated, the consumption of organic solvents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/04C10L5/10
Inventor 谢万年江东吴亮杨超群
Owner 广西桂晟新能源科技有限公司
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