Method for improving stability of water-coke slurry

A technology for water coke slurry and stability, which is applied in the field of improving the stability of water coke slurry to achieve the effects of improving stability, solving poor stability and saving costs.

Active Publication Date: 2015-09-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to above-mentioned deficiencies, the purpose of the present invention is to provide a kind of method that improves the stability of water coke slurry, fundamentally solve the problem of the stability of water coke slurry, improve its stability, make slurry stand still for a long time Water precipitation occurs, making it meet the requirements of industrial applications

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  • Method for improving stability of water-coke slurry
  • Method for improving stability of water-coke slurry

Examples

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Embodiment 1

[0030] A method for improving the stability of water-coke slurry. The raw materials of water-coke slurry include 60 parts of petroleum coke, 7 parts of activated sludge, 33 parts of water, and 0.6 parts of dispersant in terms of mass parts; its operation steps are as follows :

[0031] (1) Use a sieve to sieve the petroleum coke, and keep the petroleum coke with a particle size less than 0.8mm for subsequent use;

[0032](2) Dissolving the dispersant in water, stirring evenly for subsequent use;

[0033] (3) Mix the dispersant solution in the step (2) with the activated sludge evenly, and pour it into the ball mill together with the petroleum coke treated in the step (1), and the large ball and the small ball in the ball mill The quantity ratio is 30:150, the ball milling speed is 230r / min, and the ball milling time is 30min; the large ball diameter is 20mm, and the small ball diameter is 10mm;

[0034] (4) After the ball milling is completed, filter the obtained slurry thro...

Embodiment 2

[0038] A method for improving the stability of water coke slurry. The raw materials of water coke slurry include 64 parts of petroleum coke, 24 parts of activated sludge, 12 parts of water, and 1.0 part of dispersant in terms of mass parts; its operation steps are as follows :

[0039] (1) Use a sieve to sieve the petroleum coke, and keep the petroleum coke with a particle size less than 0.8mm for subsequent use;

[0040] (2) Dissolving the dispersant in water, stirring evenly for subsequent use;

[0041] (3) Mix the dispersant solution in the step (2) with the activated sludge evenly, and pour it into the ball mill together with the petroleum coke treated in the step (1), and the large ball and the small ball in the ball mill The ratio of the quantity is 30:150, the ball milling speed is 380r / min, and the ball milling time is 50min; the diameter of the large ball is 20mm, and the diameter of the small ball is 10mm;

[0042] (4) After the ball milling is completed, filter th...

Embodiment 3

[0046] A method for improving the stability of water-coke slurry. The raw materials of water-coke slurry include 65 parts of petroleum coke, 11 parts of activated sludge, 24 parts of water, and 0.8 parts of dispersant in terms of mass parts; its operation steps are as follows :

[0047] (1) Use a sieve to sieve the petroleum coke, and keep the petroleum coke with a particle size less than 0.8mm for subsequent use;

[0048] (2) Dissolving the dispersant in water, stirring evenly for subsequent use;

[0049] (3) Mix the dispersant solution in the step (2) with the activated sludge evenly, and pour it into the ball mill together with the petroleum coke treated in the step (1), and the large ball and the small ball in the ball mill The number ratio of the ball is 30:150, the ball milling speed is 300r / min, and the ball milling time is 40min; the diameter of the large ball is 20mm, and the diameter of the small ball is 10mm;

[0050] (4) After the ball milling is completed, filte...

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Abstract

The invention relates to a method for improving stability of water-coke slurry. The water-coke slurry is prepared from the raw materials, including petroleum coke, activated sludge, water and a dispersing agent. The method comprises the steps of (1) sieving petroleum coke through a sieve, and remaining petroleum coke of which the particle size is less than 0.8mm; (2) dissolving the dispersing agent into water, and uniformly agitating for later use; (3) integrally uniformly mixing the dispersing agent solution obtained in step (2) and activated sludge, pouring into a ball mill tank together with the petroleum coke processed in step (1), wherein the quantity ratio of large balls to small balls in the ball mill tank is 30: 150; a ball mill rotates at the speed of 230 to 380r/min; the ball milling costs 30 to 50 minutes; (4) filtering the slurry obtained by ball milling through a sieve with 40 meshes so as to remove impurities and large particles and obtain water-coke slurry. According to the method, the activated sludge is doped into the water-coke slurry to greatly improve the stability of the water-coke slurry, so that the problem of poor stability of the water-coke slurry can be completely solved; meanwhile, a new treatment way is provided to the activated sludge of a melting plant, and the sludge treatment cost of the melting plant can be reduced.

Description

technical field [0001] The invention relates to the field of slurry fuel, in particular to a method for improving the stability of water coke slurry. Background technique [0002] The basis of petroleum coke pulping gasification is to be able to produce a slurry with high concentration, low viscosity, good fluidity and stability. Due to its low O / C ratio, low ash content, undeveloped pore structure, and strong surface hydrophobicity, petroleum coke will not absorb too much free water during the pulping process, so the pulping concentration is high. The slurry concentration can reach more than 70%. However, the surface hydrophobicity of petroleum coke is too strong, and after pulping, the particles are prone to hydrophobic agglomeration, and will settle quickly under the action of gravity, resulting in extremely poor stability of water coke slurry, which is difficult to meet the requirements of industrial storage and transportation. Therefore, how to improve the stability o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32
Inventor 卢磊赵东风崔海峰段潍超
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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