Chemical engineering transactions | VOL. 70
Read

Energy consumption optimization of a synthetic ammonia process based on oxygen purity

Publication Date Aug 1, 2018

Abstract

The energy consumption of an ammonia process is huge, and it occupies a large proportion in the industrial energy consumption. The air separation unit is an important energy-consuming unit in the process of ammonia synthesis. For the ammonia process with pure oxygen gasification, the purity of oxygen products in the air separation unit is generally 99.6%. If the oxygen purity from the air separation is reduced properly, its energy consumption will decrease effectively, and the energy consumption of the whole ammonia process may further decrease, as the nitrogen element is needed for ammonia synthesis. However, with the increase of the flow rate, the operating cost of the subsequent unit would increase, so there is an optimal purity that could minimize the energy consumption of the whole process. In this paper, the process simulation software, ASPEN PLUS, is used to model and analyse the process of ammonia synthesis to determine the process energy consumption with different inlet oxygen purity. With the reduction of oxygen purity, the oxygen compressor power consumption increases, nitrogen compressor power consumption decreases, and the refrigeration energy consumption of the purification unit increases. The relations between the three kinds of energy consumption and oxygen purity are linear. Combined with the relation between oxygen purity and the energy consumption of air separation unit, the optimal oxygen purity that makes the process energy consumption minimal is 92%. Compared with the current process used 99.6% purity o...

Concepts

Oxygen Purity Air Separation Unit Ammonia Process Air Separation Energy Consumption Energy Consumption Of Process Process Of Ammonia Synthesis Ammonia Oxygen Compressor Power Consumption

Round-ups are the summaries of handpicked papers around trending topics published every week. These would enable you to scan through a collection of papers and decide if the paper is relevant to you before actually investing time into reading it.

Coronavirus Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  5

The Coronavirus Disease 2019 (COVID-19), caused by Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), belongs to emerging and reemergi...

Read More

Climate change Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  3

Introduction: The IOC and the Olympic Games have made a visible transition toward sustainability in the last two decades. While the IOC has acknowledg...

Read More

Gender Equality Research Articles published between Jan 30, 2023 to Feb 05, 2023

R DiscoveryFeb 06, 2023
R DiscoveryArticles Included:  5

Gender inequity in Science, Technology, Engineering, and Medicine (STEM) fields, including parasitology, continues to limit the participation of women...

Read More

Coronavirus Pandemic

You can also read COVID related content on R COVID-19

R ProductsCOVID-19

ONE PROBLEM . ONE PURPOSE . ONE PLACE

Creating the world’s largest AI-driven & human-curated collection of research, news, expert recommendations and educational resources on COVID-19

COVID-19 Dashboard

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on “as is” basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The Copyright Law.