相关实验视频

Updated: Jul 9, 2025

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

氨生产过程的技术,经济,能源和环境导向的同时优化:对绿色过程的进一步分析

Ashish M Gujarathi¹, Rashid Al-Hajri¹, Zainab Al-Ani¹

¹Petroleum and Chemical Engineering Department, College of Engineering, Sultan Qaboos University, Muscat, Oman.

|December 4, 2023

概括

通过水电解生产绿色氨,可实现接近零的二氧化碳排放,但利较低. 非绿色氨的利更高,但二氧化碳 (CO2) 排放量很大,这突显了可持续化学制造中的权衡.

科学领域:

化学工程是化学工程的重要组成部分.
可持续的制造业可持续的制造业
过程优化过程优化

背景情况:

氨是一种关键的工业化学品,传统生产严重依赖化石燃料.
传统氨合成中的高化石燃料消耗有助于显著的二氧化碳 (CO2) 排放.
绿色氨生产,利用可再生能源通过水电解产生气,提供了一个可持续的替代方案.

研究的目的:

为两个氨合成过程进行多目标优化 (MOO):一个绿色 (太阳能电解) 和一个非绿色 (天然气动力) 的.
分析和比较两个过程的二氧化碳排放,能源消耗,利和产品纯度.
确定影响流程性能和客观权衡的关键决策变量.

主要方法:

使用ProMax 5.0进行过程模拟,用于绿色和非绿色氨合成.
使用基于Excel的I-MODE算法执行的多目标优化 (MOO).
选择决策变量,包括工作温度,压力和和水的流量,以及纯度和反应堆温度的限制.

主要成果:

与非绿色工艺相比,绿色氨工艺的利较低 (0.7-80亿美元/年),而非绿色工艺的利则低 (0.8-4.4亿美元/年).
非绿色工艺产生大量的二氧化碳排放 (高达38,000/年),而绿色工艺几乎产生零排放.
水和的流量大大影响了流程结果,并造成了优化目标之间的冲突.

结论:

绿色氨的生产在环境上优越,因为它大大减少了二氧化碳排放,尽管利能力较低.
在绿色和非绿色氨过程之间的选择涉及经济收益和环境影响之间的关键权衡.
优化水和的流速对于平衡氨合成中的竞争目标至关重要.

关键词:

经济学经济学经济学能量能量能量能量能量绿色氨酸是一种绿色氨酸.绿色气是一种绿色气.多目标优化多目标优化

更多相关视频

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Electrochemically and Bioelectrochemically Induced Ammonium Recovery

Published on: January 22, 2015

Generic Protocol for Optimization of Heterologous Protein Production Using Automated Microbioreactor Technology

Generic Protocol for Optimization of Heterologous Protein Production Using Automated Microbioreactor Technology

Published on: December 15, 2017

相关概念视频

Preparation of Amines: Alkylation of Ammonia and Amines

Preparation of Amines: Alkylation of Ammonia and Amines

Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...

Free Energy Changes for Nonstandard States

Free Energy Changes for Nonstandard States

The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:

where R is the gas constant (8.314 J/K·mol), T is the absolute temperature in kelvin, and Q is the reaction quotient. This equation may be used to predict the spontaneity of a process under any given set of conditions.
Reaction Quotient...

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

Comparative Excretory Systems

Comparative Excretory Systems

Animals have evolved different strategies for excretion, the removal of waste from the body. Most waste must be dissolved in water to be excreted, so an animal’s excretory strategy directly affects its water balance.