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天然气制甲醇工艺技术措施的应用,以天然气作为原料,生产出优质的甲醇产品,满足天然气化工生产的技术要求。依据国内外天然气制甲醇工艺的发展状况,优化我国天然气制甲醇工艺的发展趋势,提高天然气制甲醇工艺的效益,满足我国天然气化工企业的经济性要求。 相似文献
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本文对GSP干粉煤和Texaco水煤浆入炉气化制甲醇进行了全面比较。在比较时,除煤气化工艺不一样外,其他工艺及基准条件完全一样。因此它能客观地反映两种气化工艺对生产甲醇所产生的影响。从比较结果可知,GSP工艺优于Texasco工艺。 相似文献
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研究天然气制甲醇装置工艺的主要提升策略。首先研究天然气制甲醇的主要工艺,然后以此为依据,对主要工艺提升策略进行了研究。经研究发现,在天然气制甲醇装置的实际运行中,通过水碳比、转化炉出口温度、合成塔出口温度及装置开停车的合理控制,可使其工艺得以有效提升。 相似文献
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介绍了以煤、油田气和渣油为原料联合生产甲醇的工艺流程及其特点。水煤浆气化有效气的n(H2)/n(CO)为0.4-0.5,天然一段蒸汽气转化有效气的n(H2)/n(CO)为2.7~3.0,根据H、C元素互补理论.联合生产甲醇工艺将水煤浆气化副产多余的CO、天然气转化过剩的H2和渣油催化裂解时副产的干气(分离回收的部分H2)3者结合使合成气中的生产甲醇的合成气【n(H2)-n(CO2)]/[n(CO)+n(CO2)]达到2.05-2.15,达到“氢碳互补”,从而实现节能减排目的。 相似文献
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A scale-up strategy for low-temperature methanol synthesis in a circulating slurry bubble reactor 总被引:1,自引:0,他引:1
Slurry bubble column reactors are being increasingly utilized in the large-scale conversion of coal or natural gas to liquid hydrocarbons and alcohols. A new suite of tools for developing low-temperature methanol synthesis in circulating slurry bubble reactors is explored in this study. The scale-up strategy consisting of hydrodynamics in cold flow units, catalyst performance evaluation in an autoclave, and process investigation in a pilot-scaled circulating slurry bubble reactor is presented. This methodology should be helpful for designing and scaling-up the low-temperature methanol synthesis and other related processes in slurry bubble column reactors, which will enhance and speed them towards commercial application. 相似文献
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G.H. Graaf A.A.C.M. Beenackers 《Chemical Engineering and Processing: Process Intensification》1996,35(6):413-427
A comparison is made between the ICI (two-phase) methanol synthesis process and a three-phase slurry process based on a multi-stage agitated reactor. The process calculations are based on a complete reactor system consisting of the reactor itself, a recycling system and a gas-liquid separator. The basic kinetic and thermodynamic data were taken from previous studies carried out in our laboratory. The results show that both reactor systems produce comparable methanol yields under the same process conditions except for the reactor temperature. Carbon conversion to methanol values close to 100% can be achieved. The three-phase process is more efficient in terms of heat recovery and power consumption. This is primarily caused by the fact that the three-phase process generates high-pressure steam and the ICI two-phase process yields boiler feed water of 90°C. Furthermore, the pressure drop in the three-phase reactor is smaller than in the two-phase reactor, resulting in a smaller duty of the recycle compressor. However, for the present low energy prices, the annual financial savings, coupled with these energetic aspects, are not sufficient to compensate for the higher capital investment of the three-phase reactor system relative to the ICI two-phase reactor system. A relatively high natural gas price of US $4.1 per gigajoule is needed to reach the economical break-even point between the two processes. More active catalysts may be developed in the near future. Our results show that a relative increase in the catalyst activity by a factor of 1.5 or more (for both processes) will make the three-phase process of economic interest at a natural gas price of US $2.5 per gigajoule. 相似文献
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煤制天然气示范项目存在产品生产模式单一、煤炭转化增值偏低等问题,在天然气面临价格下调的背景下,单一的产品结构已经成为制约煤制天然气项目健康发展的瓶颈问题。本文从煤基多联产的角度出发,探讨和分析煤制天然气工厂多联产化学品生产路径,旨在实现终端产品多样化和高值化,提高企业经济效益。本文通过对国内主要联产化学品需求和关键单元技术分析的基础上,结合现有煤制天然气工艺技术特点,提出了煤制天然气厂联产甲醇和联产甲醇、乙二醇两种联产方案,并对两种方案进行概念设计以及物料衡算。通过对两种联产方案进行技术经济分析发现,联产甲醇、乙二醇方案在内部收益率和投资回收期关键经济指标方面具有明显的优势。因此,在煤制天然气项目的基础上建立联产甲醇、乙二醇装置是解决现有煤制天然气项目瓶颈问题最为适合的路径。 相似文献
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催化裂化油浆直接作为燃料油的调和组分出售,经济价值较低,近年来其高值化利用技术备受关注。本文介绍了催化裂化油浆高值化利用技术研究现状,重点介绍了已工业化应用的催化裂化油浆掺炼作为延迟焦化原料技术、掺炼入常渣减压装置提高蜡油收率技术、掺炼作为溶剂脱沥青原料技术、蒸馏分离出沥青组分调和生产道路沥青技术及其特点,同时介绍了催化裂化油浆与煤共炼提高附加值、利用溶剂分离出富芳组分生产化工产品、直接热裂化生产沥青改质组分技术研究结果及其特点。从目前油浆高值化利用途径来看,油浆掺炼工艺成熟,易于实现,但价值提升不显著,同时受到炼厂现有生产装置及掺炼数量的限制,其他利用途径高值化效果显著,但需要新增设备投资,因而催化油浆的集中加工处理将是具有规模效应的有效利用途径。 相似文献
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Aromatics are traditionally produced by the catalytic reforming of naphtha. However, with the demand of aromatics increasing and the reserves of petroleum resources declining, measures should be made to reduce the dependence of aromatics production on petroleum resources. Methanol-to-aromatics is proved to be an effective way to replace traditional naphtha-to-aromatics path. In order to compare the economic and environmental performance of aromatics production from naphtha and methanol, this paper carries out an emergy evaluation for each system by sorting out the simulation and literature data. Based on the emergy data collected, the emergy indices of each system are calculated. The results show that the sustainabilities of methanol-to-aromatics systems are higher than that of the naphtha-to-aromatics system, indicating the advantages of aromatics production from methanol. Among the methanol-to-aromatics systems, the aromatics from biomass-methanol system has the highest sustainability, indicating that the biomass based methanol-to-aromatics system is worth promoting. The sustainability indexes of methanol-to-aromatics systems based on coal and coke oven gas are less than 1, which means unsustainable. Meanwhile, the sustainability of natural gas based system is slightly higher than 1. The economic and environmental benefits of these systems can be optimized by improving resource utilization and reducing investment costs. Furthermore, the combination of different raw materials for methanol production should be considered. 相似文献
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本文从技术的工艺流程、技术特点、性能指标等方面,介绍E-Gas气化技术,并对其工业应用领域进行分析。E-Gas气化技术生产的合成气中含1%~5%的甲烷,较适用于IGCC和合成天然气产业。 相似文献