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Method for coal-blending coking by using waste plastics

A technology for blending coal for coking and waste plastics, used in coke ovens, petroleum industry, etc.

Inactive Publication Date: 2008-09-03
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem to be solved is to solve the unavoidable segregation problem of the conventional coking method of waste plastic blending with coal under the condition that the performance of the refined metallurgical coke is basically unchanged or even improved

Method used

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  • Method for coal-blending coking by using waste plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: 40Kg test coke oven coking

[0020] (1) Add coal tar medium-temperature asphalt with a temperature of about 380°C from the tar processing workshop of the coking plant into the melting tank, then add waste plastics, and stir at the same time to melt the waste plastics in a liquid state at a temperature of 150-380°C In asphalt, the time is 10-20 minutes; the mass ratio of waste plastics to coal tar asphalt is 1:4;

[0021] (2) After melting, the waste plastic asphalt mixture is cooled to 30°C, and then crushed to a particle size below 3 mm with a pulverizer; the crushed waste plastic asphalt mixture is added to the coal blending chamber of the coking plant in a mass ratio of 5%. It is taken from the blended coal after the pulverizer in the coking plant;

[0022] (3) pulverize and mix the above-mentioned mixed coal blended with the mixture through the pulverizer of the existing coking coal pulverizing process first; then utilize the original transport belt t...

Embodiment 2

[0023] Embodiment 2: As described in Embodiment 1, the difference is that the mass ratio of waste plastics to coal tar pitch is 2:3 in step (1).

Embodiment 3

[0024] Embodiment 3: As described in Embodiment 1, the difference is that in step (2), the waste plastic asphalt mixed powder is added to the blended coal in a mass ratio of 2%.

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Abstract

The invention relates to a coal blending and coke making process using waste plastic, which includes adding waste plastic and coal-tar pitch into melting furnace with a weight ratio of 1: 1.5-5, congruent melting at temperature of 150-380 DEG C; cooling to 20-40 DEG C, grinding to obtain mixture powder of waste plastic then adding into mixed coal, the weight of adding mixed powder is 2-6% of total weight of mixed coal, mixed coal charged with mixture powder of plastic is grinded by grinder and then delivered to coal tower of coke oven to make coke finally. The inventive process combines with conventional procedure, fully utilizes residual heat of coal-tar pitch.

Description

technical field [0001] The invention relates to the co-coking technology of waste plastics and coal, in particular to a method of using waste plastics for coal blending and coking. Background technique [0002] Based on the consideration of environmental protection, the 21st century is an era that strongly requires the establishment of a "recycling society" that effectively utilizes resources. The amount of waste plastics incinerated as garbage is increasing rapidly year by year. According to statistics, waste plastics in domestic garbage in my country account for about 4% to 10% of the total garbage. In 2006, the amount of waste plastics in China reached nearly 14 million tons. , In recent years, it is growing at a rate of nearly 15% every year, thus forming a social problem. From the perspective of effective use of resources, the recycling of waste plastics has become an important issue. [0003] The use of coke ovens to treat waste plastics generated in daily life, if the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/06
Inventor 孙业新江丹宋尊国魏宝忠董晓春李志峰管山吉宋宪峰李明富王梅
Owner SHANDONG IRON & STEEL CO LTD
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