Modélisation d'un four de calcination du coke de pétrole: II. Simulation du procédé

A one-dimensional steady-state mathematical model has been developed to simulate the process of calcination of petroleum coke in a rotary kiln. A simulation is made to reproduce the operating conditions prevailing during a normal working day, in order to validate the model, and to study the effects of the main process control variables. It has been found that of the energy provided by combustion, 59.5 % comes from hydrogen, 14.6 % from the carbon of the coke bed, 13.8 % from coke dust, 11.3 % from methane and 0.8 % from tar. A comparison with existing models is made to identify eventual similarities between the various kilns under study. It appears that maximum coke temperature occurs at 45 to 55 % of kiln length, while volatile matters evolution takes place between 5 and 60 % of kiln length, measured from feed end.     

高硫石油焦燃烧固硫基础性研究及工业技术的进展

本文概述了高硫石油焦固硫的基础性研究及工业上的最新进展。     

Aspects of gasification and structure in cokes from coals

Cokes were prepared from nine coals of different rank and characterized by surface area measurement, reactivity to carbon dioxide at 1473K and Raman-laser spectroscopy. Rates of gasification of cokes on a unit surlface area basis (K¹ = g m^?2 min^?1) decreased with increasing rank of parent coal based on maximum oil reflectances. However rates of gasification could not be related to coke structure as measured by Raman-laser spectroscopy.     

K-T流化床转鼓造粒工艺及其应用

简述K—T流化床转鼓造粒技术的设计原理及工艺特点，详细介绍此造粒技术在化肥和化工领域中的广泛应用及其使用效果。     

Gasification kinetics of oil sands coke

Kinetics of steam gasification of delayed and fluid cokes derived from Athabasca bitumen have been studied in 6.35 cm diameter stirred and fixed bed reactors. Experiments were carried out at atmospheric pressure and at temperatures between 800°C and 930°C. The coke particle size ranged from 0.1 to 3.5 mm, and the steam partial pressure was varied from 15.2 to 60.6 kPa. Scanning electron microscopy, surface area analysis, and mercury porosimetry were employed to relate physical structure changes in the solids to experimental kinetic data. Several kinetic models for gasification were tested with the experimental gasification data. Rate expressions are presented for carbon conversion and for the release of sulphur.     

国内外型焦生产工艺及发展前景

介绍了国内外型焦技术的生产工艺、型煤碳化的过程和影响因素,以及国内目前几种碳化窑炉,通过对型焦和焦炭的对比分析,指出洁净型焦生产技术的优势必然会使它在未来具有巨大的发展空间。     

离子色谱法测定配煤、焦炭和焦油中的氯含量

研究了用带电导检测器的离子色谱对配煤、焦炭和焦油中的Cl- 进行测定的方法。在YSA型8126A-4# 阴离子分离柱上用3.5mmol/LNa2CO3、5.3mmol/LNaHCO3做淋洗液对Cl-进行测定,方法简便快速。Cl-的检出限为2×10-6。该法也适用于F-、NO2-、NO3-、SO42-等的测定。     

焦炭颗粒的粒度分布及其微观结构研究

焦炭颗粒是生产碳石墨制品的主要原料，它的粒度组成、分布及其微观结构不仅对碳石墨制品的机械性能和理化性能有一定的影响，而且还直接影响到各生产工序的成品率．为此，主要对粉碎后几种焦炭颗粒的粒度组成、分布及其微观结构进行了研究．并通过分析，确立了焦炭颗粒的粒度组成及其分布规律与粉碎方式和焦炭强度之间的内在关系．     

我国炼焦炉改造与发展的取向

本文从我国煤炭资源特点、节能及技术进步出发，描绘出我国炼焦炉改造与发展的未来轨迹。即焦炉大型化，开发捣固焦炉；铸造焦生产及专业生产铸造焦焦炉；推广多种低热值燃气加热焦炉技术；添加粘结剂炼焦与煤预热炼焦工业化。     

生产甲醇是山西焦炉气利用的有效途径

通过因地制宜的市场分析和技术经济分析 ,阐述了焦炉煤气制取甲醇是一条有效的化工利用途径