设计和优化化学循环生产系统使用蒸汽改造为石化工厂的化学循环生产系统
Mohammad Saeedan1, Ehsan Houshfar1
1School of Mechanical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563 Tehran, Iran.
ACS omega
|November 11, 2024
概括
石化工厂的化学循环燃烧显著提高了的生产. 这种先进的方法有效地产生纯二氧化碳和,提供更清洁的工业过程.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
- 工艺工程是过程工程.
背景情况:
- 工业污染需要可持续的解决方案来减少排放.
- 化学循环燃烧 (CLC) 为减少二氧化碳 (CO2) 排放提供了一个有效的途径.
- 石化工厂是实施先进排放控制和生产技术的关键领域.
研究的目的:
- 研究四个反应器化学循环燃烧系统的应用,以提高石化环境中的气生产.
- 为了评估使用铁和作为氧载体的新型CLC设计的性能.
- 优化运行参数以最大限度地提高产量和二氧化碳纯度.
主要方法:
- 在Aspen Plus中开发一个详细的过程模型,使用RGIBBS子模型来最小化Gibbs自由能量.
- 用铁和为基础的氧气载体模拟一个四个反应器的CLC系统.
- 分析关键的操作参数,包括温度,压力,空气流速和蒸汽流速.
主要成果:
- 四个反应堆的CLC设计实现了4408kmol/h的生产率,超过了传统的蒸汽改造 (3380kmol/h) 和三个反应堆的CLC设置 (4258kmol/h).
- 优化反应堆温度,降低空气流量,增加铁蒸汽反应堆压力对生产产生了积极的影响.
- 进气蒸汽流量率与气生产有非线性相关性.
结论:
- 拟议的四个反应堆的CLC系统在提高石化工厂的气生产方面非常有效.
- 优化过程参数,特别是温度,压力和空气流量,对于最大化效率至关重要.
- 这种CLC方法为同时产生气和捕获二氧化碳提供了一种可行的方法.
相关概念视频
02:13Reduction of Alkenes: Catalytic Hydrogenation
11.9K
Alkenes undergo reduction by the addition of molecular hydrogen to give alkanes. Because the process generally occurs in the presence of a transition-metal catalyst, the reaction is called catalytic hydrogenation.
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...
11.9K
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
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Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.2K