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Liquid fuel for industrial boiler by using diesel oil slurry of powdered coal as raw material, and preparation method

A technology for industrial boilers and liquid fuels, which is used in liquid carbon-containing fuels, petroleum industry, fuels, etc. to achieve the effects of good fluidity, lower costs, and improved coal utilization.

Inactive Publication Date: 2009-06-17
LIAOHE GASOLINEEUM EXPLORATION BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the long run, it has high economic value and social value. This liquid fuel and its preparation method have not been reported in Chinese patents and other documents after checking.

Method used

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  • Liquid fuel for industrial boiler by using diesel oil slurry of powdered coal as raw material, and preparation method

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Experimental program
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Effect test

Embodiment 1

[0016] The selected raw material composition distribution ratio (quality) of the present invention is pulverized coal: 50-60%, the best quality: 53%, diesel oil: 5-10%, the best quality: 5%, oil slurry: 30-40%, the best Best quality: 40%, anionic and nonionic surfactants 0.5-3.0%, best quality: 2%.

[0017] Prepare liquid fuel method of the present invention by above-mentioned each component is:

[0018] Put the oil slurry dispersant and diesel oil into the container tank according to the given ratio at normal temperature and pressure, and blend evenly, then add coal powder ground to a certain particle size into the container tank in batches, and then fully stir until The product can be made when the viscosity is 1000-1800MPa·S in the vortex state.

[0019] The dispersant is composed of two compounds, that is, an anionic surfactant and a nonionic surfactant, and the volume fractions of the two compounds are 70-92% and 8-30% or 80-97% and 3-20% respectively.

[0020] The dies...

Embodiment 2

[0022] 1. Screening of dispersant types

[0023] The main function of the dispersant is to change the lipophilicity of the surface of coal particles, enhance the electrostatic repulsion, promote the uniform dispersion of coal particles in the composite system of oil slurry and diesel oil, prevent coal particles from agglomerating, and Characteristics Select the following anionic surfactants and nonionic surfactants (cationic surfactants are rarely used as dispersants) as the main research objects. 55% of coal powder (200 mesh), 35% of oil slurry, 8% of diesel oil, and 2% of dispersant are fully mixed to a slurry state at room temperature. The specific results of the apparent viscosity and stability of the test system are as follows:

[0024]

[0025] Note: The stability in the table refers to the product system standing at room temperature for 48 hours to see if it is delaminated

[0026] It can be seen from the results that non-ionic surfactants have good stability while ...

Embodiment 3

[0040] 6. Preparation method:

[0041] Blend the oil slurry, dispersant and diesel oil according to the given ratio at normal temperature and pressure. After blending evenly under closed conditions, add coal powder ground to a certain particle size in batches, and stir until the vortex is closed. Can.

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Abstract

This invention relates to a method for preparing liquid fuel for industrial boiler from coal powder, diesel oil and oil slurry. The liquid fuel is prepared from: coal powder, diesel oil, oil slurry and dispersant. The liquid fuel can improve the utility of coal by complete combustion of oil slurry and coal powder, and can substitute for heavy oil used in oil field injection boilers. The liquid fuel has such advantages as little pollution, high efficiency, high fluidity, convenient storage and usage, and direct atomization. The method does not need modify present boilers, thus is widely used for industrial boiler combustion.

Description

Technical field: [0001] The invention relates to an industrial boiler liquid fuel and a preparation method thereof using pulverized coal diesel oil slurry as a raw material, and belongs to the category of liquid fuel and its preparation method. Background technique: [0002] With the development of the national economy, the problem of oil shortage has become increasingly prominent. At present, most hot injection boilers in oil fields still use heavy oil and emulsified oil as the main fuel. These fuels have high added value. A product of practical value. Using these materials as fuel will undoubtedly cause huge waste. According to the World Energy Resources Statistical Report in 1992, the reserves of coal in the world greatly exceed the reserves of oil, and the exploitation of oil can only last for 30-40 years, while the exploitation of coal can still last for 200-300 years. Combustion utilization is not only inefficient, but also seriously pollutes the environment. Althou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/32
Inventor 张飘石李金权
Owner LIAOHE GASOLINEEUM EXPLORATION BUREAU
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