(124c) Impact of Impurities on Carbon Molecular Sieve Membranes for Applications in Olefins Units

Authors: 
Brayden, M., The Dow Chemical Company
Xu, L., The Dow Chemical Company
Barbay, G., The Dow Chemical Company
Koros, W., Georgia Institute of Technology
The separation of olefins from paraffins is important in the petrochemical industry.The current dominant technology, cryogenic distillation, is highly energy intensive. In 2013 we reported on the use of carbon molecular sieve (CMS) membranes in a hybrid membrane-distillation process to improve energy use with resulting lower energy or increased production.

The CMS membranes are produced by pyrolyzing polyimides like 6FDA:BPDA-DAM and show improved production (flux) and exceptional separation (selectivity) when compared to the precursor polymer and polymeric membranes in general.

The impact of impurities on the CMS membrane must be understood in order to use it in actual production plant applications. This paper will discuss common impurities found in the ethylene plant’s purification train, specifically, the potential impact of these impurities on the membrane. These impurities include hydrogen sulfide, water, carbon dioxide, acetylenics, and carbon monoxide.

Checkout

This paper has an Extended Abstract file available; you must purchase the conference proceedings to access it.

Checkout

Do you already own this?

Pricing


Individuals

2017 Spring Meeting and 13th Global Congress on Process Safety
AIChE Members $150.00
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $225.00
The 29th Ethylene Producers' Conference only
AIChE Members $100.00
AIChE Fuels and Petrochemicals Division Members Free
AIChE Graduate Student Members Free
AIChE Undergraduate Student Members Free
Non-Members $150.00