焦炭质量的预测与应用

根据焦炭的结构模式和成焦机理对配煤质量和焦炭质量数据进行采集及初步处理，利用现代计算机技术和大型数学研究软件Maple V4对现有生产资料进行处理、开发焦炭质量的预测与应用软件包，建立准确可靠的回归方程，来指导配煤生产，稳定提高焦炭质量，满足炼铁高炉的生需求。     

Microscopy of porosity in metallurgical cokes

The importance of the porous structure of coke in industrial usage has been recognized for many years but the difficulties involved in determining by manual microscopic methods, quantitative details of the structure precluded comprehensive and detailed studies. With the advent of computerized image analysis systems it has become possible to overcome many of the practical difficulties associated with the determination of structural data for a material as heterogeneous as metallurgical coke. Techniques based on reflected light microscopy and automatic image analysis have been developed to the extent that representative and reliable structural characterization of coke can be achieved. The data so obtained have been used to derive strength/structure relationships which enable coke strength to be predicted with a standard error comparable with that of the experimental determination and the structural characterization now offers an additional means of defining coke quality with potentially significant industrial applications.     

SiO2/S涂层与硫磷抑制剂对轻石脑油裂解结焦的影响

引言乙烯裂解炉辐射段炉管结焦是制约乙烯装置长周期运行的主要因素。裂解炉管的结焦会引起[1]:①管壁热阻增加,传热效率降低,裂解炉能耗增加;②炉管内径变小,流体压降增加,装置处理量减少;③炉管内壁渗碳,材料性能弱化;④周期性的清焦引起炉管热疲劳现象,而清焦过程中焦炭的     

Carbon-based novel sorbent for removing gas-phase mercury

The purpose of the present study is to develop a carbon-based sorbent for removing gaseous mercury. Existing commercial activated carbon for removing mercury is superior in efficiency but expensive. This study attempted to develop a cost-effective sorbent using petroleum coke, which is low-priced carbon source. It took note that the sulfur content of domestic petroleum coke is around 7%. Sulfur is a superior reaction material in removing mercury and it has been usually impregnated into activated carbon for use. Sulfur in petroleum coke is strongly stuck to carbon matrix, so it is not reactive as itself. This study applied high-temperature pyrolysis to petroleum coke to make its sulfur take out of the surface of the petroleum coke and used the sulfur in removing mercury. According to the result of the experiment, the specific surface area of petroleum coke increased around 10 times in the course of pyrolysis and the efficiency of mercury removal was significantly improved as part of sulfur taken out. Thus, pyrolyzed petroleum coke was considered to have high potential as a sorbent for removing mercury.     

石墨化度对锂离子电池炭负极性能影响的研究

研究了两种不同的石油焦经不同温度热处理后，其石墨化度随温度的变化关系。将石墨化后的石油焦应用于１ｍｏｌ／Ｌ ＬｉＣｌＯ４／ＥＣ＋ＤＥＣ（１：１）溶液体系中作为了子电池负极，考察了石墨化度对充放电性能的影响。利用喇曼光谱（Ｒａｍａｎ）解释了石墨化度影响锂离子电池炭负极性能的原因。     

Gasification reactivities of optical textures of metallurgical cokes

Optical textures of ten typical cokes before and after gasification in CO₂ were quantified by point counting under a polarized microscope to quantify the reactivities of each type of optical texture. Although absolute values of gasification rate for each texture varied considerably from coke to coke, their relative values were constant regardless of the origin of the cokes. The relative reactivities of flow, mosaic, isotropic and inert textures were 1,1.8,2.8 and 3.0, respectively. The relative reactivity of a single coke calculated from a knowledge of optical textures, was monotonicly correlated with the mean maximum reflectance ($\text{R}\text{?}{}_0$) of the parent coal. This indicates that the high reactivity of coke from a high-rank coal ($\text{r}\text{?}{}_0\text{= 1.8\%}$) is due to factors other than its optical texture. The crystallite height, L_c(002)' of the coke correlated with $\text{R}\text{?}{}_0$ of the parent coal, although the values of L_c(002) varied only from 1.5 to 2.1 nm.     

特种焦炭生产的热工特性(一)

本文探讨了生产特种焦炭炼焦炉在原料、产品、产率、耗热量及炭化机理等方面的特殊性,并与常规炼焦生产进行了对比分析。通过标定和计算,初步剖析了降低耗热量的途径,每年可节约标准煤507.1吨。     

Structure in cokes from coals of different rank

A range of bituminous coals has been carbonized to 1273 K. Polished surfaces of the solid products, carbons or cokes, are examined for optical texture by optical microscopy. Fracture surfaces of the carbons are examined by scanning electron microscopy (SEM). The carbon from the lowest rank coal (NCB Code No. 702) is isotropic and fracture surfaces are featureless. Carbons from coals of ranks 602, 502 are optically isotropic but fracture surfaces are granular (size 0.1–0.2 μm), indicating small growth units of mesophase. In the carbon/coke from a 401 coal, the anisotropic optical texture and grain size are both ≈0.5–10 μm diameter. Coke from a coking coal (301a, 301b) has a layered structure extending in units of at least 20 μm diameter with sub-structures ~ 1.5 μm within the layers, indicating perhaps that the bedding anisotropy of these coals is not totally lost in the fluid phase of carbonization. The carbons from the higher rank coals have the bedding anisotropy of the parent coal. The combined techniques of optical microscopy and SEM (both before and after etching of the fracture surfaces of coke in chromic acid solution) reveal useful detail of structure in carbons/cokes and of the mechanism of carbonization of coking coals.     

CO2 gasification of coal cokes using internally circulating fluidized bed reactor by concentrated Xe-light irradiation for solar gasification

For the solar thermochemical gasification of coal coke to produce CO + H₂ synthetic gas using concentrated solar radiation, a windowed reactor prototype is tested and demonstrated at laboratory scale for CO₂ gasification of coal coke using concentrated Xe light from a 3-kW_th sun simulator. The reactor was designed to be combined with a solar reflective tower or beam-down optics. The results for gasification performance (CO production rate, carbon conversion, and light-to-chemical efficiency) are shown for various CO₂ flow rates and ratios. A kinetics analysis based on homogeneous and shrinking core models and the temperature distributions of the prototype particle bed are compared with those for a conventional fluidized bed reactor tested under the same Xe light irradiation and CO₂ flow-rate conditions. The effectiveness and potential impacts of internally circulating fluidized bed reactors for enhancing gasification performance levels and inducing consistently higher bed temperatures are discussed in this paper.     

论南钢公司焦炭质量与高炉生产的关系

叙述南钢焦化厂焦炭质量的不断提高与南钢高炉生产的发展关系，提出了今后改善焦炭质量的措施和途径。