Design and Validation of a Laboratory-Scale System for Investigating Coking Byproducts
Christian Manera, Guilherme Liziero Ruggio Da Silva, Bruno Deves Flores, Eduardo Osório, Marcelo Godinho, Antônio Cezar Faria Vilela
TL;DR
This paper describes a lab system that accurately replicates industrial coking processes to study byproduct yields like coke, coal tar, and gas.
Contribution
A validated lab-scale coking system is developed to replicate industrial yields and gas composition with high accuracy.
Findings
Coke yields in the lab differed by only 1.6% from industrial results.
COG methane and hydrogen concentrations matched industrial values within 5%.
The system showed high repeatability and mass balance consistency (99.7–100.2%).
Abstract
The byproducts of metallurgical coke production play a significant role in the economic well-being of integrated steel mills. In this context, this study aimed to design, construct and validate a laboratory-scale system to investigate the yields of the three main coking products: coke, coal tar and coke oven gas (COG). Laboratory yields of coke, coal tar and COG, as well as the COG composition, were validated against industrial values obtained with the same coking blend. The apparatus, comprising a coking retort and a cracking column, was designed based on systems described in the literature. The coking process was carried out at 1000 °C with a heating rate of 3 °C/min. The optimal cracking temperature and residence time for reproducing industrial conditions were determined to be 800 °C and 30 min, respectively. Under these conditions, laboratory coke yields differed by 1.6% from…
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Taxonomy
TopicsCoal and Coke Industries Research · Petroleum Processing and Analysis · Thermochemical Biomass Conversion Processes