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Biomass fuel for iron ore sintering and preparation method and application of biomass fuel

A biomass fuel and biomass technology, applied in the direction of biofuel, waste fuel, fuel, etc., to achieve the effect of slowing down the burning speed, reducing emissions, and good compactness

Active Publication Date: 2018-05-08
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the whole preparation method of biomass fuel that suppresses sintering pollutants, especially the technology of filling and wrapping biomass fuel with urea solution and CaO powder, the SO 2 and NO x There are few reports on the emission reduction of pollutants such as

Method used

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  • Biomass fuel for iron ore sintering and preparation method and application of biomass fuel
  • Biomass fuel for iron ore sintering and preparation method and application of biomass fuel

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Embodiment 1

[0026] Present embodiment a kind of biomass fuel for iron ore sintering, its preparation process is specifically as follows:

[0027] Select sawdust as the raw material for preparing biomass fuel for iron ore sintering, carry out normal temperature molding on wood chips, the pressure of normal temperature molding is 30MPa, and the time of normal temperature molding is 80 seconds to obtain molded biomass; then carbonize the prepared molded biomass , the carbonization is divided into two stages. The conditions of the first stage carbonization are as follows: in a nitrogen environment, use a controlled atmosphere resistance furnace to raise the temperature of the formed biomass from room temperature to 400°C at a rate of 8°C / min; the second stage The carbonization conditions are as follows: in a nitrogen environment, use a controlled atmosphere resistance furnace to heat up to 600°C at a heating rate of 20°C / min, and then cool naturally to room temperature to obtain carbonized bio...

Embodiment 2

[0030] This embodiment is a biomass fuel for iron ore sintering, the preparation process of which is the same as that of embodiment 1, the only difference is that corn stalks are selected as the raw material for preparing the biomass fuel for iron ore sintering.

Embodiment 3

[0032] This embodiment is a kind of biomass fuel for iron ore sintering. Its preparation process is the same as that of Embodiment 1, except that the mass of CaO powder is 15% of the mass of infiltrating carbonized biomass.

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Abstract

The invention discloses biomass fuel for iron ore sintering and a preparation method and application of the biomass fuel. The biomass fuel is prepared through the steps that molding and carbonizing are conducted on the biomass fuel, and then filling and packing are conducted on the biomass fuel by means of a urea solution and CaO powder according to the requirements of iron ore sintered fuel. Theproblems that biomass is loose, porous, large in specific surface area, low in fixed carbon content, too fast in reaction and the like are solved, the performance index of the prepared biomass fuel isclose to that of coke powder, part of the coke powder can be replaced to conduct sintering production, and meanwhile the discharge amount of pollutant in the iron ore sintering production process canbe effectively inhibited.

Description

technical field [0001] The invention belongs to the technical field of sintered fuel for iron and steel metallurgy, and in particular relates to a biomass fuel for iron ore sintering and its preparation method and application. Background technique [0002] Atmospheric PM in 338 cities across the country in 2016 2.5 The annual average concentration is 47μg / m3, which is 34% higher than the limit value of the "Ambient Air Quality Standard GB3095-2012" and 4.7 times higher than the World Health Organization's guide value. It seriously deteriorates the living environment and endangers life and health, causing great concern and anxiety in the whole society. PM 2.5 It is the "culprit" of haze weather, including primary particulate matter such as smoke and dust and SO 2 , NO x Secondary particulate matter transformed from gaseous precursors is difficult to control. The process structure of my country's steel industry is dominated by the blast furnace-converter process. In 2016, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCC10L5/445Y02E50/10Y02E50/30
Inventor 刘超赵凯邢宏伟张玉柱康月张巧荣张伟
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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