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Method for producing coal slime collecting agent by using waste oil fat

A waste oil and collector technology, which is applied in the direction of fat oil/fat refining, fat production, solid separation, etc., can solve the problems of high processing cost, large equipment investment, complicated separation and purification process, etc., and achieve the reduction of reaction temperature and pressure , reduce energy consumption, and prevent the effect of re-entering the food chain

Inactive Publication Date: 2014-08-06
河南省核力科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high quality requirements of biodiesel products, the process of separation and purification is relatively complicated, and most of them have the disadvantages of large equipment investment and high processing costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 100g of waste oil after dehydration and impurity removal, 20g of 2%Pt / Al 2 o 3 The catalyst (2% is the mass percentage of Pt in the catalyst, the same below) is added to the high-pressure catalytic reactor. Fill with hydrogen, the initial pressure is 1 MPa, heat up to 200°C with stirring, react for 5h, and separate the liquid product and the catalyst after the reaction has cooled down to room temperature. Add the separated liquid product into the saponification reaction kettle, raise the temperature to 50°C, add dropwise 1 g of sodium hydroxide solution with a mass percent concentration of 25%, and react for 20 minutes to separate impurities to obtain a coal slime collector with a flash point 110°C, freezing point -33°C, kinematic viscosity 5.0m 2 / s.

[0026] The coal from the No. 8 Mine of Hemei Coal Group is used as raw coal, the coal type is 1 / 3 coking coal, and the raw coal ash is 18.37%. Carry out small flotation test according to national standard GB / T 4757-...

Embodiment 2

[0029] 100g of waste oil after dehydration and removal of impurities, 10g of 5%Pd / Al 2 o 3 The catalyst is added to the high-pressure catalytic reactor. Fill with hydrogen, the initial pressure is 3 MPa, under the condition of stirring, the temperature is raised to 300 ° C for 3 hours, and after the reaction is lowered to room temperature, the liquid product and the catalyst are separated. Add the separated liquid product into a saponification reaction kettle, raise the temperature to 55°C, add dropwise 1 g of sodium hydroxide solution with a concentration of 30% by mass, react for 10 minutes, and separate impurities to obtain a coal slime collector with a flash point 95°C, freezing point -40°C, kinematic viscosity 4.2m 2 / s.

[0030] The coal from the No. 6 Mine of Hemei Coal Group is used as raw coal, the coal type is lean coal, and the raw coal ash is 18.2%. Carry out small flotation test according to national standard GB / T 4757-2001, the coal slime collector obtained b...

Embodiment 3

[0033] 100g of waste oil after dehydration and impurity removal, 15g of 8%Pt / SiO 2 The catalyst is added to the high-pressure catalytic reactor. Fill with hydrogen, the initial pressure is 0.5 MPa, under the condition of stirring, the temperature is raised to 250°C, and the reaction is carried out for 1 hour. After the reaction is lowered to room temperature, the liquid product and the catalyst are separated. Add the separated liquid product into a saponification reaction kettle, raise the temperature to 55°C, add dropwise 1 g of potassium hydroxide solution with a concentration of 30% by mass, react for 15 minutes, and separate impurities to obtain the coal slime collector of the present invention , flash point 102°C, freezing point -36°C, kinematic viscosity 4.7m 2 / s.

[0034] The coal from the fourth mine of Hemei Coal Group is used as raw coal, the coal type is lean coal, and the raw coal ash is 15.6%. According to the national standard GB / T 4757-2001, the small flotat...

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Abstract

The invention belongs to the technical field of preparation of coal slime collecting agents and particularly relates to a method for producing a coal slime collecting agent by using waste oil fat. The waste oil fat is subjected to hydrogenation decarboxylation and saponification to obtain the coal slime collecting agent. A new way for producing the coal slime collecting agent is developed, and the waste oil fat is prevented from being used in a food chain again, and a reasonable utilization way for the resource utilization of the waste oil fat is found.

Description

technical field [0001] The invention belongs to the technical field of preparation of coal slime collectors, in particular to a method for producing coal slime collectors by using waste oil. Background technique [0002] As a strategic resource, coal occupies an important proportion in world energy consumption. However, raw coal mined directly has disadvantages such as low calorific value, high ash content, and high sulfur content, which not only hinders its use in some fields that require high calorific value, but also produces toxic volatiles that seriously pollute the environment. Therefore, these raw coals need to undergo flotation to obtain clean coals with high calorific value, low ash content and low sulfur content. The collectors used in the flotation process of raw coal are mainly coal and diesel oil. As the largest coal producer and consumer in the world, my country consumes nearly one million tons of coal slime collectors every year, and the consumption is still ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/001B03D1/004C11B3/00
Inventor 路永广王军张晓丽杨胜杰梁峰曹佩高雪
Owner 河南省核力科技发展有限公司
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