A kind of coal preparation collector and preparation method thereof

A technology for collectors and coal preparation, applied in flotation, solid separation and other directions, can solve the problems of not being reasonably recovered and utilized, the recycling value of by-products is not high, and the economic benefits are poor, so as to achieve efficient recovery and utilization. Problems, good collection and foaming ability, effect of development promotion

Active Publication Date: 2017-01-25
SHENZHEN RUICHENG SHIDAI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex composition of the raffinate, it has not been reasonably recovered and utilized for a long time. It is usually sold as fuel and low-grade solvent after simple separation. The recovery and utilization value of by-products is not high, and the economic benefit is poor

Method used

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  • A kind of coal preparation collector and preparation method thereof
  • A kind of coal preparation collector and preparation method thereof
  • A kind of coal preparation collector and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Add 100 parts of butanol raffinate (parts by mass, the same below), 20 parts of phthalic anhydride, and 0.5 parts of concentrated sulfuric acid (catalyst) into the reactor with reflux and stirring, and start stirring; first, the temperature is raised to 105°C Under the esterification reaction for 2 hours, then continue to heat up to 240 ° C for 4 hours, so that the fatty alcohol in the butanol raffinate and phthalic anhydride fully react to form a mixed ester of phthalic acid; the esterification reaction ends Finally, the product is cooled, left to stand for layering, and the water is separated, and the target product is left in the organic phase; 3 parts of anhydrous sodium sulfate (solid desiccant) are added to the organic phase, stirred to make it fully absorb the residual moisture in the organic phase, and then Separate the bottom solid (sodium sulfate containing crystal water), and the obtained organic phase product is the synthesized composite coal preparation coll...

Embodiment 2

[0049] Add 100 parts of butanol raffinate (refer to the mass, the same below), 70 parts of phthalic anhydride, and 0.9 parts of antimony trichloride (Lewis solid acid, catalyst) into the reactor with reflux and stirring, and start stirring; First, the temperature is raised to 95°C for 3 hours of esterification reaction, and then the temperature is continued to be raised to 250°C for 3 hours of esterification reaction, so that the fatty alcohol in the butanol raffinate and phthalic anhydride fully react to form a phthalic acid mixed ester ; After the esterification reaction is finished, the product is cooled, left to stand for layering, and the water is separated, and the target product is left in the organic phase; 8 parts of anhydrous magnesium sulfate (solid desiccant) are added to the organic phase, and stirred to make it fully absorbed in the organic phase. The residual moisture, and then separate the bottom solid (magnesium sulfate containing crystal water), and the upper ...

Embodiment 3

[0052] Add 100 parts of butanol raffinate (referring to the mass, the same below), 50 parts of phthalic anhydride, and 0.5 parts of p-toluenesulfonic acid (Lewis solid acid, catalyst) into the reaction kettle with reflux and stirring, and start Stir; first raise the temperature to 110°C for 2 hours of esterification reaction, then continue to raise the temperature to 220°C for 4 hours of esterification reaction; after the esterification reaction is completed, cool the product, let it stand and separate the water, and the target product remains in the organic phase Add 2 parts of molecular sieves (solid desiccant) to the organic phase, stir to make it fully absorb the residual moisture in the organic phase, then separate the bottom solid (molecular sieve with water), and the upper organic phase is the composite collector product of synthesis.

[0053] Using the above-mentioned synthetic products as collectors, the test of flotation and recovery of carbon from steel plant soot wa...

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Abstract

The invention relates to a coal dressing collecting agent and a preparing method of the coal dressing collecting agent, in particular to a coal collecting agent with butyl-octyl alcohol residual liquid in petrochemical enterprises as raw materials and a preparing method of the coal collecting agent and belongs to the technical field of preparing of coal slime flotation collecting agents. According to the coal dressing collecting agent, the butyl-octyl alcohol residual liquid in the petrochemical enterprises and phthalic anhydride serve as raw materials, under the action of catalysts, firstly, the temperature is raised to 70-150 DEG C, and a backflow reaction is performed for 1-5 hours; then, the temperature is raised to 120-300 DEG C, water phases and organic phases are separated after the backflow reaction is performed for 1-5 hours, drying and dewatering are performed on the organic phases, and the coal dressing collecting agent can be obtained. According to the coal dressing collecting agent and the preparing method of the coal dressing collecting agent, the preparing process is simple, the obtained product is good in flotation capacity, and industrialized production and industrialized application are facilitated. Meanwhile, the problem that the butyl-octyl alcohol residual liquid cannot be easily processed with high efficiency and high yield is well solved.

Description

technical field [0001] The invention relates to a coal preparation collector and a preparation method thereof; in particular to a coal collector which takes the raffinate of butanol and octanol in a petrochemical enterprise as a raw material and a preparation method thereof; it belongs to the technical field of preparation of coal slime flotation collectors . Background technique [0002] The ash and sulfur in coal are very unfavorable to the utilization of coal. At present, physical methods are mostly used for deashing, desulfurization and upgrading of coal and coal slime. The most common methods are gravity separation and flotation. This type of method has large processing capacity, low cost and low pollution. The separation between sulfur and sulfur is more precise and adjustable, which is the focus and trend of the development of coal and coal slime deep deashing and desulfurization technology. [0003] Flotation is a method of sorting according to the difference in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/004B03D101/02
Inventor 符剑刚
Owner SHENZHEN RUICHENG SHIDAI IND CO LTD
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