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Compound modified water coal slurry additive prepared from landfill leachate raw material and preparation method

A technology for landfill leachate and modified water, applied in the field of coal-water slurry additives, can solve problems such as difficulties, and achieve the effects of reducing energy consumption, increasing shear stress, and preventing particle precipitation

Inactive Publication Date: 2016-02-10
XINJIANG SHENGHENGQING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since coal water slurry is a suspension of coarse particles and coal is a hydrophobic substance, it is very difficult to maintain good rheology and stability of coal water slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A composite modified coal-water slurry additive prepared from landfill leachate as a raw material, prepared from the following raw materials in parts by weight:

[0036] 20-50 parts of landfill leachate, 10-25 parts of activated sludge, 1-15 parts of crude naphthalene, 20-35 parts of industrial waste liquid, 10-25 parts of weathered coal or coal slime, H 2 SO 4 or Na 2 SO 3 10-20 parts, 5-15 parts of formaldehyde;

[0037] Wherein, the industrial waste liquid is a mixture of one or more of papermaking black liquor, monosodium glutamate waste liquid or sugar factory fermentation waste liquid;

[0038]The fineness of the weathered coal is required to have a particle size ≤ 300um, wherein the weathered coal with a particle size less than 74um accounts for at least 75% of the total weight of the weathered coal;

[0039] The H 2 SO 4 It is a concentrated sulfuric acid solution with a mass fraction of 98%.

Embodiment 2

[0041] A composite modified coal-water slurry additive prepared from landfill leachate as a raw material, prepared from the following raw materials in parts by weight:

[0042] 35 parts of landfill leachate, 20 parts of activated sludge, 10 parts of crude naphthalene, 30 parts of industrial waste liquid, 20 parts of weathered coal or coal slime, H 2 SO 4 or Na 2 SO 3 15 parts, 10 parts of formaldehyde.

Embodiment 3

[0044] A composite modified coal-water slurry additive prepared from landfill leachate as a raw material, prepared from the following raw materials in parts by weight:

[0045] 20 parts of landfill leachate, 10 parts of activated sludge, 1 part of crude naphthalene, 20 parts of industrial waste liquid, 10 parts of weathered coal or coal slime, H 2 SO 4 or Na 2 SO 3 10 parts, 5 parts of formaldehyde.

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Abstract

The invention discloses a compound modified water coal slurry additive prepared from a landfill leachate raw material and a preparation method. The additive is prepared from 20-50 parts of landfill leachate, 10-25 parts of active sludge, 1-15 parts of coarse naphthalene, 20-35 parts of industrial waste liquor, 10-25 parts of decomposed coal or coal slime, 10-20 parts of H2SO4 or Na2SO3 and 5-15 parts of formaldehyde. The preparation method comprises the steps of: preparing materials; mixing the materials; sulfonating the materials; condensing the materials; carrying out graft copolymerization; carrying out subsequent steps and the like. The additive disclosed by the invention has the advantages that resourceful treatment is carried out on various wastes to turn wastes into wealth, so that the influence on the environment is avoid and the utilization value of wastes is improved; the obtained product is high and good in quality, the stability and slurry forming concentration of industrial water coal slurry are effectively improved, the use level of additives is reduced, and the pulping cost is lowered.

Description

technical field [0001] The invention relates to a coal-water slurry additive, in particular to a composite modified coal-water slurry additive prepared from landfill leachate as a raw material and a preparation method, belonging to the field of coal-water slurry additives. Background technique [0002] Coal water slurry is a new, efficient and clean coal-based fuel. It is a mixture made of 60-70% coal of different particle sizes, 30-40% water and about 1% additives. It not only keeps the coal The original physical properties, but also has the same fluidity and stability as oil, can be easily stored, pipelined and atomized combustion like oil, and is called a liquid coal product. The world's energy industry has started research on coal-water slurry since the 1970s. my country is the country that developed this project earlier in the world. ” are listed as national key scientific and technological projects. Since the combustion efficiency of coal water slurry can be as high a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/24
Inventor 郑刚赵锋
Owner XINJIANG SHENGHENGQING ENVIRONMENTAL PROTECTION TECH CO LTD
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