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Preparation method of coal water slurry additive

An additive, coal-water slurry technology, applied in the field of coal-water slurry additives, can solve the problems of poor coal and process adaptability, restricting coal-water slurry technology, unsatisfactory slurry effect, etc., to improve atomization combustion performance, excellent dispersion effect, effect of wide applicability

Inactive Publication Date: 2020-09-15
朱建余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Commonly used coal water slurry additives in the prior art include lignin sulfonate series, humate series, acrylate series, naphthalene sulfonate series, etc. These coal water slurry additives are more or less adaptable to coal and process Poor performance, unsatisfactory slurrying effect, poor stability, easy to produce hard deposits, high price and other problems restrict the further development of my country's coal water slurry technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A coal-water slurry additive, which is made of the following raw materials in parts by weight: 5 parts of carboxyl-modified ionic triazole nano-microspheres, 5 parts of sulfobutyl β-cyclodextrin sodium, modified sorbyl trioleate 10 parts of ester, 1 part of lauryl ether sulfate, 30 parts of water.

[0033] The preparation method of the carboxyl-modified ionic triazole nano-microspheres comprises the following steps:

[0034] Step S1 Preparation of triazole nanospheres: 10 g of 1-vinyl-1,2,4-triazole, 20 g of poly(ethylene glycol) phenyl ether acrylic acid, 10 g of itaconic acid and azobisisobutyronitrile Add 0.4 g to 400 g of chloroform, heat and reflux at 80°C in a nitrogen atmosphere, and after precipitation polymerization for 3 hours, wash the product with ethanol centrifugation for 3 times, and then dry it in a vacuum oven at 80°C for 12 hours to obtain imidazole nanoparticles Microspheres;

[0035] Step S2 Ionization of triazole nanospheres: add 10 g of triazole ...

Embodiment 2

[0041]A coal water slurry additive, which is made of the following raw materials in parts by weight: 7 parts of carboxyl-modified ionic triazole nano-microspheres, 7 parts of sulfobutyl β-cyclodextrin sodium, modified sorbic acid trioleate 11 parts of ester, 2 parts of lauryl ether sulfate, 33 parts of water.

[0042] The preparation method of the carboxyl-modified ionic triazole nano-microspheres comprises the following steps:

[0043] Step S1 Preparation of triazole nanospheres: 10 g of 1-vinyl-1,2,4-triazole, 23 g of poly(ethylene glycol) phenyl ether acrylic acid, 10 g of itaconic acid and azobisisoheptanonitrile Add 0.45 g to 450 g of acetonitrile, heat and reflux at 82 °C in a helium atmosphere, and after precipitation polymerization for 3.5 hours, wash the product with ethanol centrifugation for 4 times, and then dry it in a vacuum oven at 83 °C for 13 hours to obtain imidazole nanospheres;

[0044] Step S2 Ionization of triazole nanospheres: add 10 g of triazole nano...

Embodiment 3

[0050] A coal water slurry additive, which is made of the following raw materials in parts by weight: 8 parts of carboxyl-modified ionic triazole nano-microspheres, 8 parts of sulfobutyl β-cyclodextrin sodium, modified sorbic acid trioleate 13 parts of ester, 3 parts of laureth sulfate, 35 parts of water.

[0051] The preparation method of the carboxyl-modified ionic triazole nano-microspheres comprises the following steps:

[0052] Step S1 Preparation of triazole nanospheres: 10 g of 1-vinyl-1,2,4-triazole, 25 g of poly(ethylene glycol) phenyl ether acrylic acid, 10 g of itaconic acid and azobisisobutyronitrile Add 0.5 g to 500 g of ether, heat and reflux at 85°C in a neon atmosphere, undergo precipitation polymerization for 4 hours, then centrifuge and wash the product with ethanol for 4 times, and then dry it in a vacuum oven at 85°C for 13 hours to obtain imidazole nanospheres;

[0053] Step S2 Ionization of triazole nanospheres: add 10 g of triazole nanospheres and 30 g...

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Abstract

The invention discloses a preparation method of a coal water slurry additive. The method comprises the following steps: uniformly mixing 5-10 parts of carboxyl modified ionic triazole nano-microspheres, 5-10 parts of sodium sulfobutyl beta-cyclodextrin, 10-15 parts of modified sorbitan trioleate, 1-3 parts of lauryl alcohol polyether sulfate and 30-40 parts of water, adding sodium hydroxide to adjust the pH value to 7-8, and sieving with a 200-300-mesh sieve to obtain the coal water slurry additive. The coal water slurry additive prepared by the preparation method disclosed by the invention islow in production cost and stable in performance, and is high in slurry concentration, low in viscosity, good in flowability and stability, low in dosage and wide in adaptability when being used forpreparing coal water slurry.

Description

[0001] This invention is a divisional application of the Chinese patent "A Coal-Water Slurry Additive and Its Preparation Method". The application date is September 28, 2018, and the application number is 201811138085.4. technical field [0002] The invention relates to the technical field of coal-water slurry additives, in particular to a coal-water slurry additive and a preparation method thereof. Background technique [0003] Coal water slurry is a new type of low-pollution oil substitute fuel, and it can also be used as a new raw material for the production of syngas. On the basis of maintaining the original physical and chemical properties of coal, it also has the same fluidity and stability as petroleum. It is known as a liquid coal product precisely because of its economy, safety, environmental protection, high efficiency and universality. It is widely used in the combustion and gasification of industrial boilers, power plant boilers, industrial furnaces and gasifiers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L1/19C10L1/232C10L1/24
CPCC10L1/1915C10L1/232C10L1/2462C10L1/326
Inventor 朱建余
Owner 朱建余
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