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

A composite additive and attapulgite technology, which is applied to fuel additives, coke ovens, solid fuels, etc., can solve the problems of lowering the ignition temperature of civil coke and the inability to use coal-fired combustion accelerants, and achieves remarkable results, improves environmental quality, reduces The effect of foggy weather

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 coal-fired combustion aid of the prior art
After searching, there is no report on additives that reduce the ignition temperature of civil coke

Method used

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  • Attapulgite composite additive for reducing ignition temperature of civilian coke, preparation method and application
  • Attapulgite composite additive for reducing ignition temperature of civilian coke, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] ⑴The dried attapulgite (chemical composition SiO 2 55.5wt%; Al 2 o 3 10.1wt%; Fe 2 o 3 6.7wt%; Na 2 O0.11wt%; K 2 O1.30wt%; CaO1.93wt%; MgO11.35wt%; MnO0.61wt%; TiO 2 0.6wt%; LOI11.8wt%), limestone additive raw materials are respectively through coarse crushing, fine crushing to particle size≤3mm;

[0030] (2) Weigh respectively 60kg of crushed attapulgite and 40kg of limestone in turn, and mix them together and stir evenly;

[0031] (3) The uniformly stirred mixture is dry-ground 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 attapulgite composite additive;

[0032] (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%;

[0033]⑸According to th...

Embodiment 2

[0040] ⑴The dried attapulgite (chemical composition SiO 2 53.2wt%; Al 2 o 3 14.8wt%; Fe 2 o 3 6.4wt%; Na 2 O0.09wt%; K 2 O1.20wt%; CaO1.63wt%; MgO11.1wt%; MnO0.49wt%; TiO 2 0.52wt%; LOI10.57wt%), the limestone additive raw material is respectively through coarse crushing, fine crushing to particle size≤3mm;

[0041] (2) Weigh respectively 52.5kg of crushed attapulgite and 47.5kg of limestone in turn, and mix them together and stir evenly;

[0042] (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 attapulgite composite additive;

[0043] (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%;

[0044] ⑸According to the at...

Embodiment 3

[0050] ⑴The dried attapulgite (chemical composition SiO 2 50.6wt%; Al 2 o 3 19.6wt%; Fe 2 o 3 6.1wt%; Na 2 O0.07wt%; K 2 O1.15wt%; CaO1.21wt%; MgO10.92wt%; MnO0.34wt%; TiO 2 0.47wt%; LOI9.54wt%), limestone additive raw materials are respectively through rough crushing, fine crushing to particle size≤3mm;

[0051] (2) Weigh respectively 45kg of crushed attapulgite and 55kg of limestone in turn, and mix them together and stir evenly;

[0052] (3) The uniformly stirred mixture is dry-milled 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 attapulgite composite additive;

[0053] (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%;

[0054] ⑸Acc...

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Abstract

The invention provides an attapulgite composite additive for reducing the ignition temperature of civilian coke. The composite additive is prepared from, by weight, 30-60 parts of attapulgite and 40-70 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 an attapulgite composite additive for reducing the ignition temperature of civil coke, a preparation method and application thereof. 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...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L9/10C10L10/02C10B57/06
CPCC10B57/06C10L5/04C10L9/10C10L10/02C10L2230/04C10L2230/22
Inventor 杜文广刘守军张智聪杨颂上官炬
Owner TAIYUAN UNIV OF TECH
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