共查询到20条相似文献,搜索用时 296 毫秒
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石家庄焦化厂焦炉加热采用计算机模糊控制系统石家庄焦化厂与北京科技大学联合在国内首次将模糊控制理论应用于焦炉加热过程控制,并进一步把系统扩展为生产控制机与上位管理机综合为一体的生产、管理优化管理系统。该系统对焦炉直行平均温度控制,空气过剩系数的控制,焦... 相似文献
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邬显青 《能源技术(上海)》1994,(3):19-21
焦炉每年耗费大量的煤气用于加热,是一个消耗能量的大沪。在技术迅速发展的当今世界,各种冶金炉都采用计算机控制加热使之处于最佳状态,从而节能(降低耗热量)。应该说焦炉在这方面发展还是属于慢的,特别是我国这方面起步已是八十年代前期.至今建成使用的为数也不多,而且往往使用一个时期以后就因种种原因则停止使用。宝钢1,2号焦炉是1979年从新日铁引进的设备,但当时没有设置加热控制计算机。3,4号焦炉在1987年筹建时从美国凯塞(Kaiser)公司引进了COHC(焦炉加热控制计算机)系统。根据COHC的特点:可以在已生产的焦炉上安… 相似文献
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陈浩鸣 《能源技术(上海)》2001,22(5):212-212
介绍了浦东煤气制气有限公司蓄热室封墙改造,红外测温计算机调节和炉头补充加热三厂节能改造项目的做法,使该公司焦炉耗热量达到国内领先,国际一流的水平。 相似文献
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炼焦炉加热产生的烟道气中SO_2和NO_x是大气的主要污染物,新的《环境保护法》对烟道废气SO_2和NO_x排放规定了限值,控制炼焦炉烟囱排放废气中的SO_2和NO_x达标排放,成为焦化工作者工作的一个重要努力方向。通过对我厂焦炉不同加热煤气下烟囱废气质量浓度排放成分的实时监测数据,发现不同加热煤气对焦炉烟囱达标排放影响很大,采用合适的加热煤气有利于焦炉烟囱废气达标排放。 相似文献
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《International Journal of Hydrogen Energy》2022,47(34):15282-15295
This study concentrates on entrainment effects to achieve distributed regime for different syngas compositions (coke oven gas, biogas, and blast-furnace gas). For this purpose, numerical modeling has been performed through a computational fluid dynamics commercial code. In the modeling, The PDF/Mixture Fraction combustion model, standard k-? turbulence model, and P-1 radiation model have been selected to be used. Entrainment without decreasing oxygen concentration in air was provided from the flame holder wall of the newly generated burner at 10%, 20%, and 30% entrainment rates. For only coke oven gas, oxygen concentration was reduced to 15% O2 with the entrainment in order to achieve ultra-low pollutant emissions level.The results showed that the temperature distributions were achieved more uniform for all cases. The flame zones became more thinner for all cases studied. This provided more invisible or colorless flame appearance, and as a result of this, more uniform thermal field was achieved without substantial decrease in combustion performance. Namely, the temperature values between the outlet temperatures for all entrainments have been close to each other (about 1200–1300 K). In terms of evaluation of distributed regime achievement on NOX and CO pollutant emission levels, one can say that ultra-low emission levels (less than 1 ppm) were achieved with entrainment effects without decrease in oxygen concenration in air excluding coke oven gas. Distributed regime could be achieved at lower oxygen concentration with entrainment for coke oven gas combustion. 相似文献
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本文着重阐述了干熄焦红焦烘炉的理论依据、原理、方案等,并对红焦烘炉和煤气烘炉的实施效果进行了评价比较,指出了对年修后的干熄炉红焦烘炉的优点,这对焦化干熄焦系统具有很好的推广价值。 相似文献
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针对钢铁生产流程中焦化及烧结工序的能量平衡、热效率及火用效率等展开研究,并对各种余热资源的能级等进行了计算和评价。在焦炉产生的余热资源中,红焦的焓值和火用值均高于其他两项,说明红焦余热量大,并且余热品质好。焦炉煤气的比焓值和比火用值均大于焦炉烟气,说明焦炉煤气的能量品质要好于焦炉烟气,而焦炉烟气的焓值大于焦炉煤气。烧结矿的比焓值和比火用值均比烧结烟气和环冷废气的比焓值和比火用值高,说明烧结矿的余热资源量和余热品质均高于烧结烟气和环冷废气。这项研究为焦化工序及烧结工序余热利用等奠定了基础。 相似文献
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The reactive sorption-enhanced reforming process of simulated coke oven gas (ReSER-COG) was investigated in a laboratory-scale fixed-bed reactor with Ni–CaO/Al2O3 complex catalyst. Simulated coke oven gases that are free of or contain C2+ hydrocarbons (C2H4, C2H6, C3H6, C3H8) have been studied as feed materials of the ReSER process for hydrogen production. The effects of temperature, steam to methane molar ratio (S/CH4) and carbon space velocity on the characteristics of ReSER-COG were studied. The results showed that the hydrogen concentration reaches up to 95.8% at a reaction temperature of 600 °C and a S/CH4 of 5.8 under normal atmospheric pressure conditions. This reaction temperature was approximately 200 °C lower than that of the coke oven gas steam reforming (COGSR) processes used for the hydrogen production. The amount of H2 generated by ReSER-COG was approximately 4.4 times more than that produced by the pressure-swing adsorption (PSA) method per unit volume of COG. The reaction temperature was 50 °C lower when simulated COG with C2+ was used, as opposed to when COG without C2+ was used. The complex catalyst has a better resistance of coking during the ReSER-COG process when C2+ gas is present. 相似文献
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