Method for preparing high-performance coal water slurry from kettle bottom residues and waste emulsion

A waste emulsion, high-performance technology, applied in chemical instruments and methods, liquid carbon-containing fuels, other chemical processes, etc., can solve the problem of poor dispersion and stability of coal-water slurry, affecting waste treatment efficiency, solid Low content and other problems, to achieve the effect of improving the removal effect, improving the chelating performance, improving the dispersion and stability

Active Publication Date: 2021-05-07
梵境新能源科技(浙江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the poor slurrying performance and low solid content of the prepared coal-water slurry in the prior art when directly using the residue at the bottom of the tank to prepare the coal-water slurry; The coal-water slurry prepared by liquid solution has poor dispersibility and stability and the subsequent gasification performance is not good, which affects the efficiency of waste treatment. A method for preparing high-performance coal-water slurry by using the residue at the bottom of the kettle and the waste emulsion is provided. The compatibility and synergistic effect of bottom residue, waste emulsion and modified activated carbon can effectively improve the performance of coal water slurry

Method used

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  • Method for preparing high-performance coal water slurry from kettle bottom residues and waste emulsion
  • Method for preparing high-performance coal water slurry from kettle bottom residues and waste emulsion
  • Method for preparing high-performance coal water slurry from kettle bottom residues and waste emulsion

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Effect test

Embodiment 1

[0038] A method for preparing high-performance coal-water slurry by using bottom residue and waste emulsion, comprising the steps of:

[0039] (1) Dry the raw coal and the bottom residue of the production of monocyclic β-lactam antibiotics respectively, pulverize and pass through a 40-mesh sieve to obtain coal powder and the bottom residue powder; dry the activated carbon, pulverize and pass through a 500-mesh sieve Obtain activated carbon powder;

[0040] (2) After the waste steel rolling emulsion is pretreated by filtration and ultrafiltration, add activated carbon powder, stir and absorb for 10 minutes to obtain the pretreated waste emulsion, wherein the mass ratio of the activated carbon powder to the steel rolling waste emulsion is 5:65;

[0041] (3) In parts by weight, mix 66 parts of coal powder, 65 parts of pretreated waste emulsion, 28 parts of still bottom residue powder and 1 part of additive, and mix and stir for 10 minutes at a speed of 500 rpm after ball milling ...

Embodiment 2

[0043] A method for preparing high-performance coal-water slurry by using bottom residue and waste emulsion, comprising the steps of:

[0044] (1) drying the raw material coal and the bottom residue of the production of monocyclic β-lactam antibiotics respectively, pulverizing, and obtaining coal powder and the bottom residue powder after passing through a 40 mesh sieve;

[0045] (2) Add surface-modified activated carbon powder to the waste steel rolling emulsion after filtration and ultrafiltration pretreatment in sequence, and obtain the pretreated waste emulsion after stirring and absorbing for 10 minutes, wherein the mass of the surface-modified activated carbon powder and the steel rolling waste emulsion The ratio is 5:65; the preparation method of surface modified activated carbon powder is:

[0046] A) adding the activated carbon powder into a nitric acid solution with a mass concentration of 30%, the mass volume ratio of the activated carbon powder to nitric acid is 1g...

Embodiment 3

[0052] A method for preparing high-performance coal-water slurry by using bottom residue and waste emulsion, comprising the steps of:

[0053] (1) Dry the raw coal and the bottom residue of the production of monocyclic β-lactam antibiotics respectively, pulverize and pass through a 40-mesh sieve to obtain coal powder and the bottom residue powder; dry the activated carbon, pulverize and pass through a 500-mesh sieve Obtain activated carbon powder;

[0054] (2) After the waste steel rolling emulsion is pretreated by filtration and ultrafiltration, add activated carbon powder, stir and absorb for 10 minutes to obtain the pretreated waste emulsion, wherein the mass ratio of the activated carbon powder to the steel rolling waste emulsion is 5:65;

[0055] (3) In parts by weight, mix 66 parts of coal powder, 65 parts of pretreated waste emulsion, 28 parts of still bottom residue powder and 1 part of additive, and mix and stir for 10 minutes at a speed of 500 rpm after ball milling ...

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Abstract

The invention discloses a method for preparing high-performance coal water slurry from kettle bottom residues and waste emulsion. The method comprises the steps: (1) drying, crushing and screening raw material coal and kettle bottom residues to obtain coal powder and kettle bottom residue powder; (2) sequentially performing filtration and ultrafiltration pretreatment on the metal processing waste emulsion, adding activated carbon powder, and stirring and adsorbing to obtain pretreated waste emulsion; and (3) mixing 65-85 parts by weight of pulverized coal, 65-75 parts by weight of the pretreated waste emulsion, 15-28 parts by weight of kettle bottom residue powder and 1-2 parts by weight of an additive, carrying out ball milling, and uniformly stirring to obtain the high-performance coal water slurry. Through compatibility of the kettle bottom residues, the metal processing waste emulsion, the activated carbon and the pulverized coal, various properties of the coal water slurry are effectively improved by utilizing interaction among wastes, and the high-performance coal water slurry which is high in solid content, good in dispersity and stability and high in combustion efficiency is prepared.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a method for preparing high-performance coal-water slurry by using bottom residue and waste emulsion. Background technique [0002] According to the new version of the "National Hazardous Waste List", the bottom residue belongs to HW06 waste organic solvents and wastes containing organic solvents; (including) organic solvent wastes are mostly harmful, flammable, corrosive, volatile or reactive and other characteristics, which are extremely harmful to the environment and human health. At present, the disposal methods of waste organic solvents in my country mainly include incineration and safe landfill, etc., and it is difficult to realize the harmless treatment of the bottom residue. [0003] With the development of industry, my country has been facing the dual pressure of water resource shortage and water pollution. Among them, emulsion wastewater ranks first among all k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/236C10L10/18B01J20/22B01J20/30C08F283/06C08F220/06C08F220/58C08F226/06
CPCC10L1/326C10L1/2368C10L10/18B01J20/20B01J20/22C08F283/065C10L2290/548C10L2290/547C10L2290/542C08F220/06C08F220/585C08F226/06
Inventor 黄河周志江蔡波陈锋吴健郑小伦陈一菡
Owner 梵境新能源科技(浙江)有限公司
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