共查询到18条相似文献,搜索用时 140 毫秒
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介绍了大型甲醇厂采用的气相低压甲醇合成工艺:ICI甲醇合成工艺因其床层温度难控制。难以大规模应用,已被Topsφe和Lurgi工艺取代;Lurgi和Topsφe工艺中热量有效利用和合成反应器很相似,但是Topsφe工艺增加了硫保护器,对催化剂起到了防止中毒,延长使用寿命的作用。 相似文献
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《煤质技术》2006,(6):69-70
煤化工期页关于中国煤化工发展的几点讨论1 1神华煤制氢技术发展现状1 4煤制烯烃—乙烯工业发展的新途径2 20球红假单胞菌诱变育种及用于煤炭降解转化试验研究2 23Lurgi MTP工艺的技术经济分析3 45华亭煤液化性能分析4 70Shell煤气化技术及其在我国的应用6 41褐煤地区煤化工产业发展模式探索6 44煤炭标准探讨我国煤炭工业标准化现状与发展需求分析1 8煤质评价与煤质标准化1 12煤炭国际标准化发展现状与展望2 1我国煤炭检测方法标准化现状及其发展2 4炼焦煤机械化采样方法的探讨2 37煤炭行业标准《动力配煤导则》及编制说明3 17浅谈商品煤… 相似文献
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针对百吨级MTP实验项目基本情况,从控制系统构成、硬件配置、控制方式、上位机功能以及MTP关键工序的控制策略和实现方法方面讨论了基于OPTO PAC22的计算机控制系统。 相似文献
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煤制甲醇过程中煤气化技术的选取 总被引:3,自引:0,他引:3
概述了国外合成甲醇工艺中5种煤气化技术:HTW流化床气化工艺、Texaco水煤浆气化工艺、SCGP气化工艺、GSP干煤粉气化工艺、Lurgi块煤加压气化工艺,并对5种煤气化技术进行了比较。 相似文献
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创新煤炭开发利用技术以降低煤炭从生产到利用全生命周期内的碳排放,是符合我国能源禀赋特点的煤基清洁能源路线。地下气化是深部煤炭原位开采的潜力方式之一,耦合CCS/CCUS(碳捕集与封存/碳捕集、利用及封存)的深部煤炭地下气化制氢技术路线不仅可以利用丰富的深部煤炭资源,而且有望成为一种理想的煤基低成本制氢路线。基于世界上唯一的千米级深部煤炭地下气化试验数据,结合Aspen Plus过程模拟,开展了深部煤炭地下气化制氢碳排放核算及碳减排潜力分析。与商业化的Lurgi煤炭地面气化制氢路线作对比,利用生命周期评价方法建立了2种工艺的全生命周期碳排放计算模型,比较了2种制氢路线的生命周期碳排放。评估了深部煤炭地下气化制氢的CCS/CCUS路径及碳减排潜力。研究结果表明,在氢气生产能力为12亿Nm3/a情形下,深部煤炭地下气化制氢和Lurgi煤炭地面气化制氢生命周期内的碳排放分别为3.29×106 t CO2-eq (当量二氧化碳)和3.93×106 t CO2-eq,其中以废气形式直接排放... 相似文献
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为了实现双通道气流式雾化喷嘴在工业化MTP多段激冷固定床内的应用,将其配置于固定床进料分布器组中,在直径12 m反应器第四级床层开展工业适应性研究,分析了不同运行周期内侧线反应物料、反应器床层出入口温度、不同位置处床层温度等变化规律。结果表明:诱导期内,液相物料进料量达1 297 kg/h,气相物料进料量为10 070 m3/h,对应床层入口温度和出口温度分别为460℃和485℃;稳定期内,液相物料进料量降至1 069 kg/h,气相物料进料量增至10 811 m3/h,对应床层入口温度和出口温度分别为459℃和490℃;失活期内,气相物料进料量略微降低,达10 006 m3/h,而液相物料进料量增至1 302 kg/h,此时床层入口和出口温度依次为466℃和490℃,双通道气流式雾化喷嘴较鲁奇公司的喷嘴更易调控反应器床层温度。 相似文献
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为了有效提高鲁奇气化炉经济运行效果,对影响气化炉能耗的原因进行了分析,从改善入炉煤煤质到节能技术的应用等方面对鲁奇气化工艺进行了优化控制,提出了根据灰熔点分类堆放、降低灰分加强矸石手选能力、选择合适汽氧比等气化炉稳定经济运行的措施.研究结果表明,通过改变原料煤煤质、优化气化炉工艺控制以及采用节能技术,有效降低了鲁奇气化炉的能耗指标. 相似文献
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云南瑞气化工有限公司15万t/a二甲醚项目采用碎煤加压气化(鲁奇炉)工艺技术,煤种选用云南小龙潭褐煤。设计就其备煤的筛分、破碎、输送等进行了系统优化设计。 相似文献
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煤焦-水蒸气气化是鲁奇加压气化的重要工艺过程,水蒸气气化特性对于确定气氧比及预测水蒸气分解率具有重要意义。以右玉元堡长焰煤为研究对象,采用自制立式管式炉在800~1 100℃范围内进行了块煤煤焦水蒸气气化实验,比较了不同热解终温煤焦样品的比表面积及孔径分布特征,并利用气相色谱对不同时刻的煤气组分进行了检测。研究结果表明,煤焦内孔隙主要为2~10 nm的中孔,随热解终温的升高煤焦的比表面积降低。依据煤焦的二氧化碳反应性,以不同温度下水蒸气的还原率β作为评价煤焦-水蒸气气化反应性的指标,低温时温度对水蒸气反应性影响较大,温度由800℃升至900℃,β增大22.74%。 相似文献
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《Minerals Engineering》2006,19(3):256-261
The formation of clinkers in a Sasol–Lurgi fixed bed dry bottom (FBDB) gasifier is a complex process controlled by coal mineralogy and operating conditions. This paper explores the link between the coal mineralogy and the mineralogy of the corresponding clinkers/coarse ash. CCSEM and XRD results indicate that kaolinite (Al2Si2O5(OH)4) and to a lesser extent quartz (SiO2) are the major coal minerals. Minor minerals are calcite (CaCO3), dolomite (CaMg(CO3)2) and pyrite (FeS2). Kaolinite and quartz are associated with rock fragments (“stone”) or as fine inclusions in organic rich coal particles. Calcite/dolomite and pyrite occur in coarse and fine cleats or fine inclusions in carbon-rich particles. The coarse ash and clinker samples contain the following phases: (1) Ca- and Fe-bearing aluminosilicate glass, (2) Crystallised phases in glass (anorthite and mullite), (3) Remnant rock fragments, (4) Large extraneous Fe-oxide/pyrrhotite/Fe–S–O particles (originally coarse pyrite cleat fragments), (5) Large extraneous Ca-oxide/Ca–Mg-oxide/carbonate particles (originally coarse carbonate cleat fragments) and (6) Uncombusted carbon-rich particles (char) with their associated minerals (kaolinite, quartz and carbonates). The equilibrium phases (as calculated with Factsage) for temperatures above 1220 °C correspond approximately to the phases which were identified in ash and clinker by CCSEM. 相似文献
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《Minerals Engineering》2007,20(9):854-861
The world wide discussion on climate change caused by CO2 and other greenhouse gases (GHGs) attributable to human activities has put the focus on the energy intensive production technologies for iron and steelmaking. Taking into account the enormous production increase for these versatile materials in the last years, modern technologies with lower CO2 and GHGs emissions are imperative to keep at least today’s status, though a decrease is challenged.Outokumpu Technology has developed direct reduction technologies that allow in combination with smelting reduction processes or electric arc furnaces a substantial lowering of CO2 emissions.In the presented contribution to MMME 06 three examples will be given:The Circofer® process, already demonstrated in pilot plant scale, uses coal as reductant in a two stage CFB (circulating fluidized bed)/FB (fluidized bed) reactor configuration to obtain a highly metallized product suitable for charging into smelting processes.One possible application of Circofer is, in a single stage configuration, as prereduction unit in combination with HIsmelt®, a smelting reduction technology to produce hot metal using iron ore and coal fines. Using Circofer as prereduction step, the capacity of a given HIsmelt installation can be increased by the factor three to four compared to cold feed and CO2 emission can be lowered to values about 20% below the standard of a modern blast furnace, as this combination of technologies requires no agglomeration plant or coke ovens.A second application of Circofer is the combination with an electric arc furnace (EAF) to produce steel directly from direct reduced iron (DRI). The direct charging of metallic fines into an EAF was successfully tested, observing no increased dust emission from the furnace. Charging hot DRI into an EAF decreases drastically electric power consumption and thus further lowers CO2 emission.Applying Circosmelt, the combination of a single stage Circofer system with an electric reduction furnace for ilmenite processing, only half of the electric power consumption required today for titania slag production using cold, unreduced feed material is required.A common additional advantage of all Circofer based routes is that a 99% pure CO2 stream is removed for process reasons from the process gas and can be used for enhanced crude oil production or sequestration methods.The paper will report on the status of the different developments and its market introduction.Outokumpu Technology GmbH (formerly Lurgi Metallurgie) has been involved in the development, design and supply of plants for processing iron bearing ores in fluidized bed reactor systems for more than 30 years. 相似文献
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介绍微孔精密过滤机处理重金属废水新技术。采用微孔PE管压滤机可对化学处理后的重金属废水进行高效精密固液分离与污泥脱水。微孔PE管精密过滤机过滤分离效率高、效果稳定,重金属废水经一次过滤可达到排放要求,能对污泥脱水,渣干度达30%~40%,操作迅速、方便、机械化程度高,使用寿命长,占地面积小,动力消耗省。国内已有1000多家企业成功应用。 相似文献
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鄂西某鲕状赤铁矿石铁品位为43.50%,铁主要以赤铁矿形式存在,铁在赤铁矿中分布率为96.34%。矿石主要有用矿物为赤铁矿,脉石矿物主要为石英、高岭土和鲕绿泥石。矿石结构主要为针状-纤维棉絮状结构、交代结构、隐晶质结构、鳞片状结构、自形-半自形粒状结构;矿石构造主要为鲕状构造和浸染状结构。赤铁矿主要呈鲕粒状集合体形式产出,直径0.08~0.8 mm;部分呈不规则粒状、细脉状或与脉石镶嵌状形式产出,粒度0.02~0.2 mm,部分小于0.005 mm;少量呈浸染状形式产出,粒度小于0.005 mm。赤铁矿的粒度极细,+75 μm粒级仅占23.87%,-5 μm粒级含量达39.20%。赤铁矿粒度极细,部分胶磷矿呈鲕环或鲕核分布在赤铁矿鲕粒内部,要通过常规选矿工艺实现磷的脱除,需磨细至5~10 μm以下。因此建议采用选冶联合方式进行选矿。 相似文献