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煤调湿技术不但可以增加焦炉生产能力和焦炭产品质量,还可以减少炼焦时所需的能源,从而起到节能环保的作用。本文对煤调湿这种技术进行了系统的简介,并阐述了煤调湿技术的几种主要工艺,以及每种工艺的优点和缺点,最后又分析了煤调湿技术在炼焦工业中的应用效果。以期该技术能够在今后的发展中得到大力的推广。 相似文献
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改善焦炭质量的若干措施 总被引:2,自引:0,他引:2
介绍了焦炭的用途和国内外质量标准,提出了改善焦炭质量的有效途径:合理选择配煤煤种和配比;配型煤炼焦;装炉煤调湿炼焦;预热煤炼焦;捣固炼焦;干法熄焦;选择粉碎;添加黏结剂和瘦化剂炼焦;焦炉大型化。 相似文献
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节能转筒煤调湿技术的研究和应用 总被引:1,自引:1,他引:0
我国现有焦炉生产能力居世界第一,但炼焦煤水分偏高,而且优质炼焦煤日益短缺.煤调湿技术可以降低入炉煤水分,降低炼焦耗热量,增加入炉煤堆密度,提高焦炭质量.我公司采用节能转筒煤调湿工艺技术对河南天宏焦化公司的炼焦煤进行调湿处理,取得了良好的经济和社会效益. 相似文献
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我国现有焦炉生产能力居世界第一,但炼焦煤水分偏高,而且优质炼焦煤日益短缺。煤调湿技术可以降低人炉煤水分,降低炼焦耗热量,增加入炉煤堆密度,提高焦炭质量。我公司采用节能转筒煤调湿工艺技术对河南天宏焦化公司的炼焦煤进行调湿处理,取得了良好的经济和社会效益。 相似文献
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配型煤炼焦技术可以改善煤料的粘结性,增强焦炭强度,节约优质煤资源。文章分析了配型煤炼焦对炼焦煤料性能的影响机理,介绍了新日铁配型煤和住友金属配型煤炼焦工艺,以及各焦化厂通过焦炉实验和生产实践总结的配型煤炼焦的结果。 相似文献
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S. K. Das A. S. Nandy A. Paul B. K. Sahoo B. Chakraborty A. Das 《Coke and Chemistry》2013,56(4):126-136
A by-product coke making plant is required to supply sufficient coke of good quality and adequate gas of high calorific value for the integrated steel plant to be a going concern. The one element that influences the handling of coal and impacts the operation and efficiency of the plant is moisture. Compared to other important properties of the coal blend, moisture can be easily manipulated. The coal moisture can be increased simply by adding water through hose pipes. Also, it can be reduced to 5–6 mass percent using Coal Moisture Control (CMC) and 2–4 mass percent using Dry-cleaned & Agglomerated Pre-compaction System (DAPS). Moisture content is one among the many variables affecting the bulk density of coal blend and those controlling the coke qualities and yield. Increase in moisture reduces coal grindability, coking pressure and internal gas pressure; helps in dust suppression during charging and hence reduces jamming of ascension pipes and hydraulic main. Batteries charging coals with high moisture content are not troubled with roof carbon deposits. It was observed that when moisture content in coal blend of SAIL-Bokaro Steel Plant increased to more than 8.50%, the calorific value of coke oven gas improved. In the working moisture range of 9–11%, the increase of the yield of coke oven gas per 1% of working moisture is 5.2 m3. Studies have shown, however, that the increase in moisture content of coal beyond 8% hampers strong coke formation. Pre-carbonization preheating process generally showed an increase in the proportion of 40–80 mm coke, compared with wet charges. For SAILBokaro coke ovens, driving out 1% moisture from coal blend requires 125 Mega-calories of heat/oven. With lesser moisture, the emission of NO x in atmosphere will also be low. On using dry to low moisture coal blend, the swelling of coke mass increases leading to difficulty in oven pushings. Hence, an optimum level of moisture content of charge coal needs to be maintained for improving coke oven productivity, coke quality and operational smoothness. The coke oven managers all around the globe maintain this optimum level according to their requirement, the operating conditions, the quality of product and by products, the oven health & age and the ease of handling. 相似文献
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随着捣固炼焦大型化的推进,煤饼的成型率越来越受到人们的关注,而煤饼成型率的好坏很大程度决定于入炉煤的水分控制。利用烟道气的热量及适当的外加热源进行煤调湿,可以提高煤饼成型率,增加焦炭产量,有效地降低回炉煤气量、减小污水及CO2的排放量。 相似文献
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针对云煤能源公司下属焦化公司生产中因配煤水分高而造成的煤饼剥蚀量大、易坍塌、捣固成型困难等问题,进行了煤调湿工艺开发,以焦炉烟道气余热为热源或动力源,开发的"焦炉烟道废气-流化床"和"焦炉烟道废气-滚筒干燥机"煤调湿技术,可以控制配煤水分在10%左右,并且在节能、降耗、减排方面效益显著。 相似文献
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对几种焦炉烟道气余热利用技术即煤调湿技术、应用热管技术加热除盐水和副产蒸汽分别进行了分析探讨。结合山西焦化集团有限公司焦炉装置生产实际情况,对以上3种焦炉烟道气余热利用方案,分别从工艺技术的可行性、实施的难易程度、投资、效益等方面进行比对分析,提出了相关的建议。 相似文献
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