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Stable ash-free method for preparing nano coal slurry

A coal slurry and nano technology, which is applied in the field of stable ashless nano coal slurry preparation, can solve the problems of insufficient combustion, ash accumulation and slagging, nozzle blockage, etc., and achieves high energy utilization rate, low cost and good stability. Effect

Inactive Publication Date: 2008-05-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of coal slurry is very effective in replacing heavy oil in large boilers in power stations. However, the application of this coal slurry on diesel engines and gas turbines is likely to cause many problems such as nozzle blockage, wear, insufficient combustion, and slagging.

Method used

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  • Stable ash-free method for preparing nano coal slurry

Examples

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Effect test

Embodiment 1

[0022] (1) 1000 grams of Shandong washed clean coal in 1000 grams of mixed solvent 1 (400 grams of NMP, 200 grams of DMSO, 140 grams of carbon disulfide, 100 grams of DMF, 10 grams of THF, 10 grams of pyridine, 40 grams of LCO, 40 grams of cyclohexanone , 20 gram phenylenediamine, 10 gram ethylenediamine, 10 gram triethylenetetramine, 10 gram TCNE, 10 gram TCNQ) after swelling, ball milling prepared superfine organic coal slurry in 120 minutes;

[0023] (2) 2000 grams of ultrafine organic coal slurry and 5000 grams of mixed solvent 2 (1000 grams of NMP, 1000 grams of carbon disulfide, 500 grams of DMSO, 500 grams of DMF, 500 grams of heavy oil, 500 grams of LCO, 100 grams of tetralin, 100 grams of ten Hydronaphthalene, 100 grams of cyclohexane, 100 grams of petroleum ether, 100 grams of washing oil, 100 grams of phenol oil, 50 grams of cyclohexanone, 50 grams of TCNE, 50 grams of TCNQ, 50 grams of pyridine, 50 grams of indole, 50 grams of ethyl Diamine, 50 grams of phenylenedi...

Embodiment 2

[0026] (1) 1000 grams of Shenhua washed clean coal in 500 grams of organic solvent 1 (100 grams of NMP, 100 grams of carbon disulfide, 60 grams of LCO, 50 grams of DMF, 50 grams of pyridine, 30 grams of tetrahydronaphthalene, 30 grams of decahydronaphthalene, After swelling in 10 grams of TCNE, 10 grams of TCNQ, 10 grams of phenylenediamine, 10 grams of cresol, 10 grams of naphthol, 10 grams of pyrene, 10 grams of phenanthrene, and 10 grams), the superfine organic coal slurry was prepared after ball milling for 60 minutes ;

[0027] (2) 1500 grams of ultrafine organic coal slurry and 4500 grams of organic solvent 2 (1500 grams of NMP, 500 grams of DMF, 1000 grams of carbon disulfide, 400 grams of cyclohexanone, 200 grams of petroleum ether, 100 grams of decahydronaphthalene, 100 grams of Tetralin, 100 grams of diesel oil, 100 grams of LCO, 100 grams of pyridine, 50 grams of TCNE, 50 grams of TCNQ, 30 grams of ethylenediamine, 20 grams of phenylenediamine, 10 grams of triethyle...

Embodiment 3

[0030] (1) 1000 grams of Shanxi washed clean coal in 2000 grams of organic solvent 1 (500 grams of methyl naphthalene oil, 300 grams of tetrahydronaphthalene, 200 grams of decahydronaphthalene, 200 grams of NMP, 100 grams of LCO, 100 grams of quinoline, 100 grams of DMSO, 100 grams of cresol, 100 grams of anthracene oil, 100 grams of washing oil, 100 grams of phenol oil, 50 grams of TCNE, 20 grams of TCNQ, 10 grams of pyridine, 10 grams of pyrene, 10 grams of phenanthrene), and then through Prepare superfine organic coal slurry after ball milling for 300 minutes;

[0031] (2) 3000 grams of ultrafine organic coal slurry and 3000 grams of organic solvent 2 (1000 grams of methyl naphthalene oil, 500 grams of naphthalene oil, 200 grams of tetrahydronaphthalene, 200 grams of decahydronaphthalene, 100 grams of heavy oil, 150 grams of LCO , 50 grams of TCNE, 50 grams of TCNQ, 100 grams of cresol, 100 grams of naphthol, 100 grams of anthracene oil, 100 grams of washing oil, 100 grams ...

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Abstract

The invention discloses a preparation method of stable ashless nano coal slurry. The method includes: (1) preparing ultra-fine organic coal slurry by ball milling after the coal is swollen in an organic solvent; (2) removing the ash in the coal by organic solvent extraction; (3) removing the ash-free coal from the The organic solution is separated, and the structure control agent is used to control the growth process of coal molecules to form nano-coal particles with adjustable particle size. Finally, a stable ashless nano-coal slurry is prepared by adding a dispersion stabilizer. The dispersion medium can be water, alcohol , oil or a mixture of solvents. This method uses solvent extraction-precipitation method to prepare coal-based liquid fuel. Compared with traditional coal direct liquefaction and indirect liquefaction, it has the advantages of simple process, high energy utilization rate and low cost. The prepared coal slurry can be directly used in diesel engines, Gas turbines, central air-conditioning, oil-fired boilers, etc. are used to replace fuel oil and vaporize to prepare oxygen.

Description

technical field [0001] The invention relates to a preparation method of a coal-based oil-substituting fuel, in particular to a preparation method of a stable ashless nano-coal slurry that can be directly used in diesel engines and gas turbines. Background technique [0002] The basic characteristics of my country's energy resources are coal-rich, oil-poor, and gas-poor. Coal reserves account for about 90% of the total petrochemical energy reserves, while oil and natural gas reserves only account for 10%. Therefore, coal is the most reliable and guaranteed in my country. energy. However, the direct combustion of coal has caused serious pollution to the environment, and clean coal technology is the only way for the development of the coal industry. Coal-to-oil is a better clean coal technology, which uses coal as raw material to produce oil products through physical and chemical methods. Coal-to-oil technology can be divided into two categories: dire...

Claims

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Application Information

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IPC IPC(8): C10L1/32
Inventor 王卫星
Owner SOUTH CHINA UNIV OF TECH
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