Title

STUDY CONCERNING THE INFLUENCE OF ADDING BIOMASS AND INCREASING THE COAL BLENDING BULK DENSITY OVER THE QUALITY OF HARD COKE PRODUCED IN THE PILOT COKING OVEN

STUDY CONCERNING THE INFLUENCE OF ADDING BIOMASS AND INCREASING THE COAL BLENDING BULK DENSITY OVER THE QUALITY OF HARD COKE PRODUCED IN THE PILOT COKING OVEN

Authorship

Silva, Agenor Medrado da; Oliveira, Andre Tarcizo de; Medrado, Swami Botelho; Oliveira, Paulo Roberto de

Silva, Agenor Medrado da

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Oliveira, Andre Tarcizo de

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Medrado, Swami Botelho

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Oliveira, Paulo Roberto de

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DOI

10.5151/2594-357x-0122

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Abstract

The herein paper presents the quality results of the coke produced in pilot coking oven by using blends of mineral coal and biomass (carbonized rice hull and charcoal) and varying the bulk density of the charging. On the first stage of the herein referred study, it was applied coal blends containing briquettes of charcoal fines, in the proportion of 2%, besides varying the charging bulk density from 34.7 to 52.4 lb/ft3. The quality results of the produced coke indicated a rise on the Drum Index from 80.4% to 84.1% and a fall on reactivity from 27.3% to 22.7%. In blends with up to 4% of charcoal addition and charging density established at 52.7 ± 0.1 lb/ft3, it was observed a rise on the Drum Index from 83.9% to 85.%, and an increase on the coke reactivity from 23.2% to 27.5%, as well as an increase on the coking pressure from 1.59 to 4.84 psi. On the second stage of such study, it was assessed the effect of using briquettes made from charcoal fines and rice hull coal over the quality of the produced coke. The results indicated a rise on the D.I. from 77.9% to 81.1%, and a reduction on the coke reactivity from 36.4% to 25.4%, besides an increase on the coking pressure from 0.89 to 2.99 psi.

The herein paper presents the quality results of the coke produced in pilot coking oven by using blends of mineral coal and biomass (carbonized rice hull and charcoal) and varying the bulk density of the charging. On the first stage of the herein referred study, it was applied coal blends containing briquettes of charcoal fines, in the proportion of 2%, besides varying the charging bulk density from 34.7 to 52.4 lb/ft3. The quality results of the produced coke indicated a rise on the Drum Index from 80.4% to 84.1% and a fall on reactivity from 27.3% to 22.7%. In blends with up to 4% of charcoal addition and charging density established at 52.7 ± 0.1 lb/ft3, it was observed a rise on the Drum Index from 83.9% to 85.%, and an increase on the coke reactivity from 23.2% to 27.5%, as well as an increase on the coking pressure from 1.59 to 4.84 psi. On the second stage of such study, it was assessed the effect of using briquettes made from charcoal fines and rice hull coal over the quality of the produced coke. The results indicated a rise on the D.I. from 77.9% to 81.1%, and a reduction on the coke reactivity from 36.4% to 25.4%, besides an increase on the coking pressure from 0.89 to 2.99 psi.

Keywords

Coal; Coke plant; Coke; Biomass; Reactivity; Coking pressure; Drum index; Bulk density.

Coal; Coke plant; Coke; Biomass; Reactivity; Coking pressure; Drum index; Bulk density.