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首页> 外文会议>AIChE annual meeting >EFFECT OF OPERATING CONDITION ON LIGHT OLEFINS PRODUCTION FROM BIO-ETHANOL USING SAPO-34 CATALYST
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EFFECT OF OPERATING CONDITION ON LIGHT OLEFINS PRODUCTION FROM BIO-ETHANOL USING SAPO-34 CATALYST

机译：操作条件对使用SAPO-34催化剂从生物乙醇生产轻质烯烃的影响

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In recent years, with the global warming problem and the energy crisis, the production ofchemicals from renewable resources has been paid more attention. Light olefins (ethylene andpropylene); one of the important chemicals, can be produced from renewable resources as well.Recently, there are few reports on the production of ethylene from bio-ethanol; that is a renewableresource, using a silicoaluminophosphate zeolite (SAPO-34) catalyst through the catalytic dehydrationprocess. The suitable temperature for the highest production of ethylene is 350 °C, after which itdecrease. However, the selectivity to propylene at high reaction temperatures and low space velocityhad not yet been investigated. In this work, the objective was to study the effect of using SAPO-34 inthe catalytic conversion of bio-ethanol to light olefins at various operating conditions aiming to findthe optimal condition for the high propylene production. The reaction temperature and liquid hourlyspace velocity (LHSV) were varied in the range of 350 °C to 500 °C and 0.2 h~(-1) to 1.0 h~(-1), respectively.As a result, the reaction temperature and LHSV had the influences on catalytic activity. Lowtemperature or high LHSV are highly effective for the production of ethylene whereas hightemperature or low LHSV are highly effective for the production of C_(4+) products. The reactiontemperature of 400 °C and the LHSV of 0.5 h~(-1) were found to be the suitable conditions for a highproduction of propylene with 92.5% ethanol conversion and 12.6% propylene selectivity. The reactiontemperature and the LHSV also affected to the coke formation on the catalyst. The amount of cokeincreased with the increase of reaction temperature and the decrease of LHSV.
机译：近年来，随着全球变暖问题和能源危机，生产 来自可再生资源的化学品已受到更多关注。轻质烯烃（乙烯和 丙烯）;重要的化学物质之一，也可以由可再生资源生产。 最近，关于由生物乙醇生产乙烯的报道很少。那是可再生的 资源，使用硅铝磷酸盐沸石（SAPO-34）催化剂通过催化脱水 过程。乙烯最高产量的合适温度为350°C，之后最高 减少。但是，在高反应温度和低空速下对丙烯的选择性 尚未被调查。在这项工作中，目的是研究在体内使用SAPO-34的效果 旨在发现各种条件下生物乙醇到轻质烯烃的催化转化 高丙烯生产的最佳条件。反应温度和液体每小时 空速（LHSV）分别在350°C至500°C和0.2 h〜（-1）至1.0 h〜（-1）的范围内变化。 结果，反应温度和LHSV对催化活性有影响。低的 高温或高LHSV对乙烯的生产非常有效，而高温 温度或低LHSV对生产C_（4+）产品非常有效。反应 发现400°C的温度和0.5 h〜（-1）的LHSV是实现高温的合适条件。 生产具有92.5％乙醇转化率和12.6％丙烯选择性的丙烯。反应 温度和LHSV也影响催化剂上焦炭的形成。焦炭量 随着反应温度的升高和LHSV的降低而增加。

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