Coal dressing collecting agent and preparing method thereof

A technology of collector and coal preparation, applied in flotation, solid separation and other directions, can solve the problems of low value of recycling and utilization of by-products, not being reasonably recycled and utilized, and poor economic benefits, and achieve efficient recycling and utilization. Problems, good collection and foaming ability, effect of development promotion

Active Publication Date: 2015-04-22
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

Method used

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  • Coal dressing collecting agent and preparing method thereof
  • Coal dressing collecting agent and preparing method thereof
  • Coal dressing collecting agent and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example 1:

[0042] Add 100 parts of butanol residue (referring to parts by mass, the same below), 20 parts of phthalic anhydride, and 0.5 parts of concentrated sulfuric acid (catalyst) into the refluxing and stirring reaction kettle, and start stirring; firstly, the temperature is raised to 105°C The esterification reaction is lowered for 2h, and then the temperature is increased to 240°C and the esterification reaction is continued for 4h, so that the fatty alcohol in the butanol raffinate and phthalic anhydride fully react to produce phthalic acid mixed ester; the esterification reaction is over Afterwards, the product was cooled and left to stand for stratification, water was separated, and the target product remained in the organic phase; 3 parts of anhydrous sodium sulfate (solid desiccant) were added to the organic phase, stirred to fully absorb the remaining moisture in the organic phase, and then The bottom solid (sodium sulfate containing crystal water) is separa...

Example Embodiment

[0048] Example 2:

[0049] Add 100 parts of butanol residue (referring to the mass, the same below), 70 parts of phthalic anhydride, 0.9 parts of antimony trichloride (Lewis solid acid, catalyst) into the refluxed and stirred reactor, and start stirring; Firstly, the temperature is raised to 95°C for the esterification reaction for 3 hours, and then the temperature is increased to 250°C for the esterification reaction for 3 hours, so that the fatty alcohol in the butanol residue and the phthalic anhydride fully react to form the phthalic acid mixed ester ; After the esterification reaction is over, cool the product, stand still for layering, separate water, and leave the target product in the organic phase; add 8 parts of anhydrous magnesium sulfate (solid desiccant) to the organic phase, stir to fully absorb the organic phase The remaining water in the water, and then the bottom solid (magnesium sulfate containing crystal water) is separated, and the upper organic phase is the s...

Example Embodiment

[0051] Example 3:

[0052] Add 100 parts of butanol residue (referring to mass, the same below), 50 parts of phthalic anhydride, and 0.5 parts of p-toluenesulfonic acid (Lewis solid acid, catalyst) into the refluxing and stirring reaction kettle, and start Stirring; firstly heat the esterification reaction at 110°C for 2h, then continue to heat up to 220°C for the esterification reaction 4h; after the esterification reaction is over, cool the product, stand still for layering, separate water, and leave the target product in the organic phase ; Add 2 parts of molecular sieve (solid desiccant) to the organic phase, stir to fully absorb the residual moisture in the organic phase, and then separate the bottom solid (hydrous molecular sieve), the upper organic phase is the synthetic composite collector product.

[0053] Using the above-mentioned synthetic products as collectors, a test of flotation and recovery of charcoal from the soot of a steel plant was carried out. The process and ...

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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, it relates to a coal collector using petrochemical enterprise butanol residue as a raw material and a preparation method thereof; and belongs to the technical field of coal flotation collector preparation . Background technique [0002] The ash and sulfur in coal are very unfavorable to the utilization of coal. At present, most of the deashing, desulfurization and quality improvement of coal and coal slime use physical methods. The most common methods are gravity separation and flotation. This type of method has large processing capacity, low cost, and low pollution. Among them, flotation is more effective than coal and ash. , The separation of sulfur is more precise and adjustable, which is the focus and trend of the development of coal and slime deep deashing and desulfurization technology. [0003] Flotation is a method of sorting according to the diffe...

Claims

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Application Information

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IPC IPC(8): B03D1/004B03D101/02
Inventor 符剑刚
Owner SHENZHEN RUICHENG SHIDAI IND CO LTD
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