Method for producing clay coal water slurry

A production method and muddy water technology, which is applied in the field of oil sludge coal water slurry, kiln and coal water slurry gasifier, and coal water slurry boiler, can solve the problems of bulky, soil, water body air pollution, and occupying large cultivated land, etc., to achieve Simple operation, low cost, and the effect of improving the combustion rate

Inactive Publication Date: 2010-09-15
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because of its huge volume, the oil sludge not only occupies a large amo...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 23kg of oilfield scum and sludge with oil content of 29% and water content of 66% to a grinder equipped with stirring equipment, 51kg of Fuxin bituminous coal powder passing through a 200 mesh sieve accounting for more than 80%, 25kg of water, and 1kg of viscosity-reducing dispersant, stirring and mixing Filter after 30 minutes to obtain the oil sludge coal-water slurry of the present invention.

[0016] The viscosity-reducing dispersant is benzylnaphthalenesulfonic acid formaldehyde condensate, sulfonated sodium humate, polyethylene glycol and sodium carbonate, and the weight percentages of the raw material components are respectively 45% benzylnaphthalenesulfonic acid formaldehyde condensate, sulfonated Sodium Humate 36%, Polyethylene Glycol 16% and Sodium Carbonate 3%.

[0017] The prepared CWS has a viscosity of 520mPa·s, good fluidity, and no delamination or hard precipitation occurs after 20 days of storage.

Embodiment 2

[0019] Add 28kg of oil field tank bottom sludge with 34% oil content and 60% water content to the grinder equipped with stirring equipment, 47kg of Fuxin bituminous coal powder passing through a 200-mesh sieve accounting for more than 80%, 24kg of water, and 1kg of viscosity-reducing dispersant, stirring and mixing Filter after 30 minutes to obtain the oil sludge coal-water slurry of the present invention.

[0020] The viscosity-reducing dispersant is benzylnaphthalenesulfonic acid formaldehyde condensate, sulfonated sodium humate, polyethylene glycol and sodium carbonate, and the weight percentages of raw material components are respectively 34% benzylnaphthalenesulfonic acid formaldehyde condensate, sulfonated Sodium humate 48%, polyethylene glycol 13% and sodium carbonate 5%.

[0021] The prepared oil sludge coal water slurry has a viscosity of 440mPa·s and good fluidity, and no delamination or hard precipitation occurs after storage for 20 days.

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Abstract

The invention relates to a resource utilization technology for combining clay and clean coal and discloses a method for producing clay coal water slurry. The clay coal water slurry comprises the raw material components in percentage by weight: 15-35 percent of clay, 42-58 percent of pulverized bituminous coal over 80 percent of which passes through a 200-mesh sieve, 18-28 percent of water and 0.5-1.5 percent of viscosity-reducing dispersant. The invention has the advantages of simple operation, low energy consumption, low cost and no secondary pollution. The produced clay coal water slurry has favorable flowability, strong stability and high combustion efficiency, thereby meeting the requirement of a boiler for fuel combustion or gas making, not only relieving the problem that the current coal is in shortage, but also effectively using clay, achieving the requirements of reduction, reclamation and harmlessness on clay treatment and having favorable market and popularization value.

Description

Technical field: [0001] The invention relates to a resource utilization technology combining oil sludge and clean coal. Specifically, oil sludge and coal powder are mixed and stirred under the action of a small amount of additives to prepare oil sludge coal-water slurry, which can be widely used in coal-water slurry boilers, Kilns and coal-water slurry gasifiers. Background technique: [0002] Oil sludge is one of the important pollutants produced in the process of oilfield development, storage and transportation, and it is also a major problem that restricts the continuous improvement of oilfield environmental quality. The composition of oil sludge is extremely complex, mainly composed of three parts: water, sediment and oil, which are in a very stable suspended emulsification state, and contain a large amount of wax, asphaltene, colloid, bacteria, salt, heavy metal, corrosion products and Various water treatment agents, etc. According to its source, it is mainly divided ...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10J3/46F23K1/02
Inventor 高洪阁张大松贺龙韩广东王涛
Owner SHANDONG UNIV OF SCI & TECH
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