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Preparation method of gasified water-coal slurry additive

A technology for additive preparation and gasification of coal-water slurry, which is applied in the fields of fuel additives, petroleum industry, liquid carbon-containing fuels, etc., can solve the problems that the improvement effect of gasification coal-water slurry additives is not obvious and the cost of raw materials is high.

Active Publication Date: 2018-11-23
SHANGHAI RES INST OF CHINA SHENHUA COALTO LIQUID & CHEM +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of preparation method of gasification coal-water slurry additive, to solve the raw material cost of preparing gasification coal-water slurry additive existing in the prior art is high, the prepared gasification coal-water slurry additive can improve the slurry Problems with little effect

Method used

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  • Preparation method of gasified water-coal slurry additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]10t of papermaking waste liquid reacts with 4t of concentrated sulfuric acid with a mass concentration of 90% in the stirring tank 1 for 10h, then reacts with 4t of milk of lime in the settling tank 2 and settles for 20h, the supernatant in the settling tank 2 enters the belt type Filter press, filter at a pressure of 0.1MPa to obtain the filtrate; 3t of washing oil and 1t of concentrated sulfuric acid are reacted in the sulfonation reactor 5 at a reaction temperature of 80°C for 8h, and the obtained reaction liquid and 1t of deionized water enter the hydrolysis Hydrolyze in tank 6 for 20 hours, the obtained hydrolyzate and 2.5t formaldehyde enter the condensation reactor 7, and carry out polycondensation reaction at a reaction temperature of 105°C for 8 hours, and the obtained condensate and the filtrate filtered out by the belt filter press are mixed and stirred Tank 4, the reaction solution obtained by mixing and stirring reaction and 5t of sodium hydroxide solution wi...

Embodiment 2

[0035] 8t of papermaking waste liquid and 3t of concentrated sulfuric acid with a mass concentration of 95% reacted in the stirring tank 1 for 13h, then reacted with 4t of milk of lime in the settling tank 2 and left to settle for 24h, the supernatant in the settling tank 2 entered the belt type Filter press, filter under the pressure of 0.2MPa to obtain the filtrate; 5t of washing oil and 2t of concentrated sulfuric acid are reacted in the sulfonation reactor 5 at a reaction temperature of 80°C for 10h, and the obtained reaction liquid is hydrolyzed with 1t of deionized water Hydrolyze in tank 6 for 24 hours, the obtained hydrolyzate and 3t formaldehyde enter the condensation reactor 7, carry out the polycondensation reaction at a reaction temperature of 105°C for 10 hours, the obtained condensate and the filtrate filtered out by the belt filter press enter the mixing tank 4. The reaction solution obtained by mixing and stirring reaction is neutralized with 6 tons of sodium hy...

Embodiment 3

[0038] 12t of papermaking waste liquid reacted with 4t of concentrated sulfuric acid with a mass concentration of 98% in the stirring tank 1 for 16h, then reacted with 5t of milk of lime in the settling tank 2 and left to settle for 28h, the supernatant in the settling tank 2 entered the belt type Filter press, filter under the pressure of 0.3MPa to obtain the filtrate; 2t of washing oil and 1t of concentrated sulfuric acid are reacted in the sulfonation reactor 5 at a reaction temperature of 80°C for 12h, and then enter the hydrolysis tank 6 with 1t of deionized water Hydrolyze for 28 hours, the obtained hydrolyzate and 2t of formaldehyde enter the condensation reactor 7, carry out the polycondensation reaction at a reaction temperature of 105°C for 12 hours, the obtained condensate and the filtrate filtered out by the belt filter press enter the mixing tank 4, mix The reaction solution obtained by the stirring reaction is neutralized with 4t of sodium hydroxide solution with ...

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Abstract

The invention discloses a preparation method of gasified water-coal slurry additive, which belongs to the technical field of the preparation of water-coal slurry additives. The method comprises the following steps: enabling papermaking waste solution to react with a sufficient amount of thick sulfuric acid for 10 to 16 hours, obtaining a reaction solution A, enabling the reaction solution A to react with a sufficient amount of lime milk, settling, obtaining supernatant B, pressing filtering the supernatant B, obtaining filtrate C; performing the sulfonation reaction for wash oil and sufficientthick sulfuric acid at 70 to 120 DEG C for 8 to 12 hours, obtaining a reaction solution D, performing the hydrolytic reaction for the reaction solution D and sufficient deionized water, obtaining hydrolyte E, performing the polycondensation for the hydrolyte E and sufficient formaldehyde at 90 to 110 DEG C for 8 to 12 hours, obtaining a condensation compound F, stirring and mixing the condensation compound F and the filtrate C to react, obtaining a reaction solution G, enabling the reaction solution G to have neutralization reaction with a sodium hydroxide solution, and obtaining the gasifiedwater-coal slurry additive, wherein the mass ratio of the papermaking waste solution and the wash oil is 1: 9 to 9: 1. The preparation method adopts the papermaking waste solution as a raw material which is cheap and easy to obtain, and the prepared gasified water-coal slurry additive has good effect for improving the prepared slurry.

Description

technical field [0001] The invention relates to the technical field of preparation of additives for coal-water slurry, in particular to a method for preparing additives for gasified coal-water slurry. Background technique [0002] Low-rank coal (including lignite, long-flame coal, weakly caking coal and non-caking coal) accounts for more than 50% of my country's coal reserves and production, and has become an important part of my country's coal processing and utilization. Low-rank coal has high oxygen content , the content of heteroatoms is high, such as for combustion, the thermal efficiency is low and the environment is polluted, and there are many disadvantages for power generation. On the other hand, because low-rank coal is rich in precious organic components such as aromatic hydrocarbons and heteroatom aromatic compounds, if it is used as a chemical raw material to produce organic chemicals, it has a unique material basis. [0003] Patent CN106520231A relates to a prep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/14C10L1/32C10L10/00
CPCC10L1/14C10L1/326C10L10/00
Inventor 何国锋李永伦段清兵万豪杰吕向阳张玉斌张胜局王冉柳金秋赵力明徐明磊刘烨炜陈浩
Owner SHANGHAI RES INST OF CHINA SHENHUA COALTO LIQUID & CHEM
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