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Copper slag composite additive for reducing ignition temperature of civilian coke, preparation method and application

A technology of composite additives and ignition temperature, which is applied in fuel additives, solid fuels, petroleum industry, etc., can solve the problems of inability to use coal-fired combustion aids, reduce the ignition temperature of civil coke, etc., and achieve environmental quality improvement with remarkable effect and low price Effect

Active Publication Date: 2016-07-06
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because civil coke needs to go through a special process of high-temperature dry distillation, most of the components in the coal-fired combustion aid will be invalidated due to pyrolysis; therefore, civil coke cannot use the existing technology coal-fired combustion aid
After searching, there is no report on additives that reduce the ignition temperature of civil coke

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ⑴The dried blast furnace copper slag (chemical composition SiO 2 31.0wt%, FeO4 2.0wt%, Fe 2 o 3 3.0wt%, CaO13.0wt%, MgO5.0wt%, Al 2 o 3 5.45wt%, S0.2wt%, Cu0.35wt%), and limestone additive raw materials are respectively coarsely crushed and finely crushed to a particle size of ≤3mm;

[0027] (2) Weigh 70kg of broken blast furnace copper slag and 30kg of limestone respectively in turn, and mix them together and stir evenly;

[0028] (3) The uniformly stirred mixture is dry-milled to make the particle size of the raw material ≤ 150 mesh (0.1mm); then calcined at 260°C for 2 hours and cooled to room temperature, which is the copper slag composite additive;

[0029] (4) Furnace coal is mixed with 20wt% long-flame coal, 15wt% lean coal, 30wt% 1 / 3 coking coal, 20wt% fat coal and 15wt% main coking coal; the quality index of the blended coal For: V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%; cohesion index G=74, fineness (≤3mm)=73.6%;

[0030] ⑸According to the cop...

Embodiment 2

[0036] ⑴The dried converter copper slag (chemical composition SiO 2 16.0wt%, FeO57.8wt%, Fe 2 o 3 12.0wt%, CaO1.1wt%, MgO0.53wt%, Al 2 o 3 10.0wt%, S1.51wt%, Cu1.06wt%), and limestone additive raw materials are respectively coarsely crushed and finely crushed to a particle size of ≤3mm;

[0037] (2) Weigh respectively 57.5kg of broken converter copper slag and 42.5kg of limestone in turn, and mix them together and stir evenly;

[0038] (3) The uniformly stirred mixture is dry-ground to make the particle size of the raw material ≤ 150 mesh (0.1mm); then calcined at 270°C for 1.8 hours, cooled to room temperature and packaged, which is the copper slag composite additive;

[0039] (4) Furnace coal is blended with 30wt% weak caking coal, 40wt% long-flame coal, 20wt% gas fertilizer coal and 10wt% non-caking coal; its quality index (wt%): V adf 35.0%, A d 13.5%, FC d 56.2%, S t,d 0.84%, cohesion index G=40, fineness (≤3mm)=86.5%;

[0040] ⑸According to the weight ratio of c...

Embodiment 3

[0046] ⑴The dried blast furnace copper slag (chemical composition SiO 2 35.0wt%, FeO3 6.0wt%, Fe 2 o 3 6.5wt%, CaO17.0wt%, MgO0.8wt%, Al 2 o 3 4.08wt%, S0.21wt%, Cu0.41wt%), and limestone additive raw materials are respectively coarsely crushed and finely crushed to a particle size of ≤3mm;

[0047] (2) Weigh respectively 45kg of broken blast furnace copper slag and 55kg of limestone in turn, and mix them together and stir evenly;

[0048] (3) The uniformly stirred mixture is dry-ground to make the particle size of the raw material ≤ 150 mesh (0.1mm); then calcined at 280°C for 1.5 hours, cooled to room temperature and packaged, which is the copper slag composite additive;

[0049] (4) Furnace coal is mixed with 20wt% long-flame coal, 15wt% lean coal, 30wt% 1 / 3 coking coal, 20wt% fat coal and 15wt% main coking coal; the quality index of the blended coal For: V adf 30.0%, A d 13.5%, FC d 60.6%, S t,d 0.67%; cohesion index G=74, fineness (≤3mm)=73.6%;

[0050] ⑸Accordi...

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Abstract

The invention provides a copper slag composite additive for reducing the ignition temperature of civilian coke. The composite additive is prepared from, by weight, 20-70 parts of copper slag and 30-80 parts of limestone. The source of the raw materials is wide and rich, the price is low, the cooling effect on the ignition temperature is remarkable, emissions of sulfur oxide and nitrogen oxide are reduced by 70% or above, emissions of smoke are reduced by 96% or above, and great practical significance is achieved for solving the life coal problem in rural areas around cities, improving rural and urban environment quality and reducing haze weather.

Description

technical field [0001] The invention relates to a copper slag composite additive for reducing the ignition temperature of civil coke, a preparation method and application. Background technique [0002] Coal combustion is the main way for my country to obtain energy at present and for a long time in the future. A large amount of dust, sulfur dioxide, and nitrogen oxides emitted by direct combustion of coal have caused serious harm to the ecological environment, especially the atmospheric environment, leading to air pollution in our country. Severe, hazy weather occurs frequently. Based on the current situation of coal-burning pollution, the state has issued a series of laws and regulations, and adopted strong punishment measures. Although the implementation of these regulations has played a certain role in curbing the aggravation of coal-burning pollution, it is still far from the goal of environmental protection. [0003] In fact, the environmental pollution caused by coal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C10L10/02
CPCC10L9/10C10L10/02
Inventor 杜文广刘守军张智聪杨颂上官炬
Owner TAIYUAN UNIV OF TECH
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