Olefins from conventional and heavy feedstocks: Energy use in steam cracking and alternative processes
Olefins from conventional and heavy feedstocks: Energy use in steam cracking and alternative processes
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DOI：
10.1016/j.energy.2005.04.001
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发表时间：
2006-03-01
期刊：
影响因子：
9
通讯作者：
Blok, K
中科院分区：
文献类型：
--
作者：
Ren, T;Patel, M;Blok, K
用于生产轻质烯烃（例如乙烯和丙烯）的蒸汽裂化是化学工业中单一的最耗能的工艺。本文综述了传统的蒸汽裂解和创新的烯烃技术的能源效率。据发现，石脑油蒸汽裂解炉的热解部分单独消耗约65%的总过程能量和约75%的总火用损失。通过对原料制烯烃技术的研究，绘制了烯烃技术的谱系图，以寻找替代品。对最先进的石脑油裂解技术的概述表明，在目前的平均工艺能耗基础上节省约20%是可能的。在热解工段采用先进的石脑油裂解技术，如先进的盘管和炉材料，通过最先进的技术，可以节省高达约20%的工艺能源。压缩和分离部分的改进可以共同带来高达约15%的节省。替代工艺，即催化烯烃技术，可以节省高达约20%。(C)2005爱思唯尔有限公司保留所有权利。
Steam cracking for the production of light olefins, such as ethylene and propylene, is the single most energy-consuming process in the chemical industry. This paper reviews conventional steam cracking and innovative olefin technologies in terms of energy efficiency. It is found that the pyrolysis section of a naphtha steam cracker alone consumes approximately 65% of the total process energy and approximately 75% of the total exergy loss. A family portrait of olefin technologies by feedstocks is drawn to search for alternatives. An overview of state-of-the-art naphtha cracking technologies shows that approximately 20% savings on the current average process energy use are possible. Advanced naphtha cracking technologies in the pyrolysis section, such as advanced coil and furnace materials, could together lead to up to approximately 20% savings on the process energy use by state-of-the-art technologies. Improvements in the compression and separation sections could together lead to up to approximately 15% savings. Alternative processes, i.e. catalytic olefin technologies, can save up to approximately 20%. (C) 2005 Elsevier Ltd. All rights reserved.