焦炭烧损率测定及降低烧损率措施

介绍了炼焦系统焦炭烧损的现状,提出焦炉系统和干熄焦系统焦炭烧损率的测定方法。通过提高系统严密性、优化工艺运行制度,可降低焦炭烧损率,提高经济效益。     

降低干熄焦焦炭烧损率的研究

分析了干熄焦焦炭烧损率的原因。通过控制影响烧损率的因素,使焦炭烧损率由1.2%下降到0.9%。按照生产焦炭100万t/a计算,每年可减少烧损1 000t,创经济效益100余万元,并延长了干熄炉的使用寿命和年修间隔时间。     

干熄焦焦炭烧损的研究

系统地分析了干熄焦焦炭烧损的过程及原因,提出了降低干熄焦焦炭烧损的措施及监测干熄焦烧损率的可用方法,有利于指导干熄焦运行。     

干熄焦焦炭烧损率与蒸汽产量的探讨

通过理论计算并结合生产实践,探讨了焦炭烧损率与干熄焦蒸汽产量的关系,提出了合理的烧损率及其控制手段.通过控制焦粉产率调整焦炭烧损率,当烧损率为0.825%左右时,蒸汽产能收益较好,这对焦化厂干熄焦系统有较好的推广价值.     

干熄焦烧损率的统计方法及烧损因素探讨

干熄焦烧损率的计算目前都采用碳平衡法,碳平衡法能确定干熄焦稳定运行时的烧损率,但进行生产统计时碳平衡法是不可取的。文中介绍了用干熄焦产汽率计算、统计干熄焦焦炭烧损的方法,该方法不需要进行碳排放量的测定,可随时进行统计计算,方便简单,精度能够满足生产统计需要,同时对干熄焦系统运行过程焦炭烧损的原因进行了分析和探讨。     

干熄焦焦炭烧损率的几种测定方法

利用不同测定方法测算干熄焦焦炭烧损率。从源头数据获取的难易程度、外部干扰因素等几个方面分析了4种方法在工业生产统计中的适用性。对比发现热平衡计算法测定焦炭烧损率获取数据简便、干扰因素少,更适用于工业企业统计分析。     

应用气体成分测算干熄焦系统中碳的烧损

2009年,三明焦化厂建成投产了1座125t/h干熄焦系统,该系统采用了空气导入法。按目前能源价格分析,焦炭烧损所占的价值比例约50%。因此,能否有效控制焦炭烧损是优化系统经济运行的关键。针对干熄焦各个子系统关联性强、调节滞后等特点,开发能够反映焦炭烧损率的实时化、可视化系统，将具有极其重要的意义。     

干熄焦烧损率及空气泄漏量计算方法研究

本文提出一种局部热平衡法计算干熄焦烧损率的方法,及利用碳平衡法反推干熄焦炉的空气泄漏量的方法。通过两种方法联立,成功计算出沙钢干熄焦焦炭的烧损率,以及整个系统中的空气泄漏量。根据烧损率原因,制定出循环气体管道补漏等措施,使干熄焦烧损率显著降低。     

安钢75t/h干熄焦焦炭烧损影响分析

安钢焦化厂75 t/h干熄焦于2008年3月开工建设,2009年7月28日投产,分析干熄炉焦炭烧损率的变化和存在的系列问题,提出了降低干熄焦烧损率的工艺措施和方法,为稳定干熄焦工序,延长炉体使用寿命,增加焦炭产量和改善冶金焦质量,提供了科学生产依据和改进方法。     

安钢75t/h干熄焦焦炭烧损影响分析

安钢焦化厂75 t/h干熄焦于2008年3月开工建设,2009年7月28日投产,分析干熄炉焦炭烧损率的变化和存在的系列问题,提出了降低干熄焦烧损率的工艺措施和方法,为稳定干熄焦工序,延长炉体使用寿命,增加焦炭产量和改善冶金焦质量,提供了科学生产依据和改进方法。     

焦炭气孔率对焦炭热性能的影响

通过研究40kg试验焦炉单种煤焦炭、配合煤焦炭及工业焦炉焦炭的气孔结构及焦炭热性能,得出气孔率对焦炭热性能的影响。焦炭气孔率对焦炭热性能有较大影响,随着气孔率的增加,CRI增加,CSR降低;工业焦炉焦炭气孔率与焦炭热强度之间关系密切,气孔率每增加1％,CRI增加0．48％,CSR降低1．46％。用气孔率预测焦炭热性能,对指导焦炭生产、控制焦炭热性能具有指导意义。     

Pitch and petroleum coke additions to coke oven charges

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.     

Production of coke with ore additives in coke furnaces

Coke with ore additive may be produced from Zarechnaya DG coal (Kuznets Basin) and high-sulfur Zh coal (from Samsonovskaya and Krasnolimanskaya enrichment facilities, Donets Basin), which is of low technological value and is used in small quantities in batch for the production of blast-furnace coke. The ore additive employed is dust from the dry gas purifiers in the production of commercial silicomanganese, manganese-carbonate concentrate, and manganese-oxide concentrate of the first and second kinds. In experimental batches, the content of the ore additive is adjusted in 5% increments over the range 0–15%. On introducing the ore additive in the batch, the corresponding quantity of G coal is removed, with constant content (40%) of Zh coal. Experimental batches are coked in a 5-kg laboratory furnace (designed by Ukrainian Coal-Chemistry Institute). The coke obtained is tested by methods including technical analysis and determination of the electrical resistivity, the reactivity, and the structural and mechanical strength. In the production of highly reactive coke with high electrical resistivity, the best ore additive is 10–15% manganese-oxide concentrate. The coke is suitable for transportation, transfer, sorting, and crushing to the required size.     

关于捣固炼焦焦饼收缩度的探讨

分析了捣固炼焦与顶装炼焦的焦饼收缩度差异性及其影响因素,探讨了低挥发分配煤在捣固炼焦设计和生产等方面的问题,并提出了下列措施:适当降低加热水平;设定合理的结焦时间;设计可调煤饼宽度的装煤车;根据配合煤Vdaf和X值调整煤饼宽度、高度及采用XD值指导生产,以保证煤饼与炉墙有足够的间隙和适宜的空间温度。     

干法熄焦和湿法熄焦工艺的对比分析

从环境保护、产品质量、装置投资和资源利用等角度,对比分析了焦化厂目前采用的湿法熄焦和干法熄焦两种工艺的优缺点.     

Assessing coke structure

The structural strength of the coke produced may be predicted on the basis of the coefficients V ^PM, K ^GL, K ^P, K ^SC, which, in turn, are calculated from measurements of A ^d , V ^daf , and y in coal and of A ^d , V ^daf , and S ^s in plastometric semicoke. If the coke yield (K ^co) is taken into account, those coefficients may be used to determine the coking capacity (K ^cc) of the coal and to predict the structural strength of the coke body (K ^ssc) produced from that coal. On the basis of K ^ssc, coking coal may be divided into two categories: coke-forming coal; and filler.     

Continuous coke production

A critical review reveals extensive experimental data on the continuous production of nonmetallurgical coke. In view of the large reserves of poorly clinkering coal in Ukraine and the need to produce sufficient coke for consumers outside of the metallurgical industry, the expansion of such research seems expedient.