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孙敏 《煤炭加工与综合利用》2014,(4):54-57
介绍了通过热回收炼焦炉的炼焦过程对高灰熔点粉煤进行提质,生产的化工焦满足鲁奇炉气化原料的粒度(5~50 mm)要求,解决了高灰熔点粉煤气化难问题,同时化解了过剩焦化产能,以盘活焦化行业存量资产。 相似文献
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采用连续式超临界水反应装置,以褐煤和焦化废水配制的水煤浆为原料,考察了温度(450℃~600℃)和水煤浆浓度(20%~50%)对褐煤-焦化废水在超临界水中连续气化制氢的影响.结果表明,在褐煤一焦化废水超临界水共气化制氢过程中,存在明显的协同效应.在浆浓度为20%,600℃,25 MPa条件下,褐煤-焦化废水共气化的氢气产率和碳气化率比相同条件下二者单独气化的加权平均值分别增加了141.9 mL/g和6.1%.反应温度是影响褐煤-焦化废水超临界水共气化制氢的关键因素,随着反应温度从450℃提高到600℃,氢气的体积分数与产率分别由21.5%和85.3 mL/g增加到42.3%和371.8 mL/g,碳气化率由18.2%增大到29.8%.碳的气化率随水煤浆浓度的升高而降低,最高进浆浓度可达50%(质量分数),无堵塞现象发生. 相似文献
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从灵活焦化装置包含的反应气化、分馏吸收稳定、干气液化气精制、灵活气净化、焦炭处理五个部分介绍了灵活焦化工艺流程,并与热加工技术的代表延迟焦化技术相比,从原料适应性、生产连续性、油品产率等六个方面论证了灵活焦化技术优势。结论显示,灵活焦化技术具有较广泛的应用,装置可以平稳运行3~4a,是一种技术成熟,运行可靠的重质油加工技术;灵活焦化技术通过气化将焦炭改质为清洁的灵活气,有效的解决了高硫焦的出路问题;灵活焦化技术全过程封闭,减少了粉尘及污染物的排放,是一种环境友好的技术;灵活焦化技术利用灵活气替代工厂的燃料气,在天然气价格高的地区具有明显的经济效益。 相似文献
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钾、钙对煤焦气化反应性具有重要影响,秸秆灰中含有丰富的钾、钙。以神木煤为制焦原料,通过STA409PC同步热分析仪研究了秸秆灰对煤焦气化反应性的影响,并通过测定煤焦的碘吸附值对其比表面积及孔隙结构进行了分析。结果表明:煤与玉米秸秆共焦化所得煤焦的气化反应性明显优于单独煤焦,且与玉米秸秆的添加比例有关;采用脱灰玉米秸秆与煤共焦化所得煤焦的气化反应性与单纯煤焦相近;将与玉米秸秆等效的秸秆灰添加到煤焦中,煤焦的气化效果明显优于等效玉米秸秆与煤共焦化所得煤焦。煤焦碘吸附值测定结果表明,脱灰秸秆与煤共焦化所得煤焦的碘吸附值最大,单纯煤焦的碘吸附值最小,说明玉米秸秆及秸秆灰对煤焦的比表面积及孔隙结构具有重要的影响,与煤焦的气化反应性评价结果基本一致。 相似文献
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煤的气化及其影响因素综述 总被引:1,自引:0,他引:1
论述了煤气化过程(热解和气化阶段)中煤炭的焦化、气化以及与CO2的反应机理,分析了原煤的煤化程度、显微组成等因素对煤热解和气化过程的影响。 相似文献
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讨论了21世纪炼厂发展高硫石油焦制氢工艺的必要性和可能性,介绍了华东理工大学开发的以多喷嘴对置式水煤浆气化技术为主的湿法石油焦(煤)气化技术,建议开发具有自主知识产权的高硫石油焦气化制氢技术,发展延迟焦化.石油焦制氢组合工艺技术,达到以焦代油的目的。 相似文献
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Several pitch materials and a petroleum coke were added to coke oven charges in an attempt to make good metallurgical coke from Canadian coal of poor coking quality. Coal and petroleum pitches were added to a low fluid western Canadian coal of medium volatile bituminous rank, and the blends coked in a technical-scale moveable wall test oven having a 230-kg charge capacity. Pitches improved coke tumble test indices, the principal coke quality parameter related to blast furnace performance. Varying levels of petroleum coke were added to an eastern Canadian coal of high volatile bituminous rank, and the blends, some partially briquetted, were carbonized in a test oven. Tumble indices of coke from the partially briquetted charges approached an acceptable level. These investigations confirm that petroleum products as well as coal derivative can play a useful part in the production of a metallurgical strength coke from poor or non-coking coals. 相似文献
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通过检测焦炭的M40、M10、CRI、CSR、焦炭的气孔结构、光学组织结构,分析了干熄焦工艺对顶装焦和捣固焦质量的影响程度,检测表明,捣固焦炉配干熄焦工艺技术不但可提高焦炭质量,还可提高弱黏煤比例,节约优质焦煤。 相似文献
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K. Singh M.V.P. Menon B.C. Mitra S.K. Chatterjee S.R. Sarkar S. Biswas R.B. Paul S.T. Raghavan 《Fuel Processing Technology》1984,9(1):79-89
Assessment of the coking behaviour of coals and blends by conducting coking tests in experimental coke ovens still continues to be the most reliable method and is extensively used all over the world. The oil-cum-gas fired experimental coke oven developed at CFRI has a coal charging capacity of 1100 kg and simulates industrial carbonising conditions. The oven is capable of intermittent operation and can be brought up to working temperature within 36 hours.Correlation studies of coke quality were carried out by conducting a series of coking tests on the same blend, carbonised under similar conditions in the CFRI experimental coke oven and the commercial coke ovens of Bokaro Steel Plant. The study has revealed that the physical strength of the CFRI oven coke compares favourably with the Bokaro oven coke. M40 and M10 indices of the commercial oven coke can be predicted fairly accurately from the results of CFRI oven coke.T-tests performed on the shatter results showed that at 5% probability level there was no significant variation between the shatter indices of both cokes. The quality of the gas produced from the CFRI test oven was very similar to that of the gas produced from the Bokaro ovens. 相似文献
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根据干熄焦系统生产运行参数,采用多种方法核算焦炭烧损率,并分析烧损率与吨焦产汽量的关系,通过计算得出降低焦炭烧损率对企业经济效益的影响。 相似文献
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Papers regarding Russia’s coke furnaces—in particular, their construction and reconstruction and issues of preservation and operational stability—presented at the Seventeenth Annual Seminar of Coke-Industry Specialists are summarized. The seminar was hosted by OOO EvrazKoksSibir’, a subdivision of OAO ZSMK. 相似文献