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Clean modified briquette and method for preparing same

A modified and clean technology, which is applied in the field of clean modified coal and its preparation, can solve the problems of increasing the amount of solid waste, insufficient emission of sulfur dioxide, and consumption of laterite resources, etc., and achieves low cost, low pollution discharge rate, and reasonable The effect of the preparation process

Inactive Publication Date: 2006-04-19
KUNMING JUJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology needs to use a large amount of laterite as a binder. First, it consumes laterite resources (many southern cities are now strictly prohibited from using laterite), and second, it increases the amount of solid waste, and the emission of sulfur dioxide is not yet optimal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Sieve and pulverize the coal powder to obtain superfine coal powder for later use, the fineness of which is ≤20 μm;

[0028] 2) Sieve and crush the oil shale to 100-200 mesh for later use;

[0029] 3) 2) pulverized matter 30% and 1) superfine coal powder 20%, Huang's purified powder 5%, complexing agent aluminum oxide (Al 2 o 3 ) 1% mixed;

[0030] 4) Add (binder) 2% calcium oxide, 6% humic acid, 15% water, and 23% anthracite to the above mixture and knead;

[0031] 5) After kneading, stack the modification reaction, cover for 24 hours, and shape it with a pressure molding machine at a pressure of 5 to 7 mPa;

[0032] 6) After molding, dry to make the water content less than 10%, then pack and store.

Embodiment 2

[0034] 1) same as embodiment 1;

[0035] 2) select peat for subsequent use;

[0036] 3) 2) peat 50% and 1) superfine powder 15%, Huangshi purification powder 1%, complexing agent aluminum oxide 3%, (bonding agent) active dicalcium silicate by weight percentage 2%, organic wastewater 8% (such as slaughterhouse wastewater, or printing and dyeing factory waste liquid, etc.), anthracite 21% kneading;

[0037] 4) After kneading, stack the modification reaction, cover for 36 hours, and shape it with a pressure molding machine at a pressure of 5 to 7 mPa;

[0038] 5) Same as 6) of Example 1.

Embodiment 3

[0040] 1) same as embodiment 1;

[0041] 2) Sieve and crush the coal gangue to 100-200 for later use;

[0042] 3) 70% of pulverized matter of 2) is mixed with 11% of ultra-fine coal powder of 1), 4% of Huang's purified powder, and 5% of complexing agent Al2O3 by weight percentage;

[0043] 4) Add (bonding agent) 7% of papermaking black liquor and 3% of waste residue from metal magnesium factory to the above mixture and knead;

[0044] 5) After kneading, stack the modification reaction, cover for 48 hours, and shape in front of the furnace.

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Abstract

The invention relates to a clean modified briquette and method for preparing same, wherein the briquette is prepared from (by weight ratio) the following raw materials, super fine coal powder 10-20%, coal gangue or stone coal or kerosene shale or mushy coal 30-70%, purification powder 1-5%, complexing agent 1-5%, adhesive 8-10%, water 0-15, and balancing glance coal. The invention can be applied for diminishing pollution discharge.

Description

technical field [0001] The invention relates to the production technology of clean coal, in particular to clean modified shaped coal and its preparation method. Background technique [0002] Coal is the most important primary energy source in my country. my country's resource conditions determine that coal will remain the main energy source in the next 50 years. At present, more than 75% of the smoke and dust discharged into the atmosphere in my country's cities, SO 2 75-85% of the total comes directly from coal combustion, and coal gangue is the largest solid waste in my country, so it is very important to study the rational utilization of coal resources. In addition to the global warming effect and the harm of acid rain, the clean combustion of coal has become an urgent problem to be solved. [0003] Although the briquette with saving as the main goal has been studied for many years at home and abroad for many years, there is still no ideal solution for the purification...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/04
Inventor 刘桓钟爱国
Owner KUNMING JUJIE SCI & TECH
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