With our purification solutions, we help make better products and provide safer, more sustainable and more profitable process operations.
PURITY MATTERS: ADSORBENTS FOR ANY CHALLENGE
When process feeds need to be freed from impurities, finding the right adsorbent – or combination of adsorbents – is key. Even 99.5% pure, polymer-grade propylene, for example, still requires purification prior to any polymerization or chemical process; but there is no one-size-fits-all purification solution for removing common contaminants such as oxygenates, mercaptans, hydrogen sulphide and carbonyl sulphide.
Olefins such as ethylene and propylene, for example, can be purified with three main adsorbent types: molecular sieves, promoted alumina, and alumina/molecular sieve hybrids. With our complete portfolio of purification adsorbents, we can tackle your individual challenge with an optimized solution – including our high-performance hybrid adsorbent Dynocel® 680.
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DYNOCEL® 680: HYBRID ADSORBENT FOR POLAR AND ACID-GAS COMPOUNDS
Dynocel® 680 is a spherical hybrid adsorbent for the purification of vapor or liquid phase olefinic hydrocarbon streams. The molecular sieve component removes polar compounds such as water, alcohols, ammonia, ethers, ketones and mercaptans to non-detectible levels; the promoted activated alumina component removes acidic compounds such as H2S, COS, and CO2.
The adsorbent does not require a preload step. This ensures a safer and more reliable operation and eliminates the risk of catastrophic adsorbent failure. Since no olefin is required for the regeneration process, operating costs are significantly lower. Dynocel® 680 exhibits low reactivity, which prevents the formation of by-products. The benefit: no off-spec products due to color, haze or other related problems as well as no equipment fouling.
The use of Dynocel® 680 ensures a safer, more reliable operation, eliminating the risk of adsorbent failure and ensuring product quality and process efficiency.
EVONIK’S PURIFICATION PRODUCT RANGE
Our product range for olefin purification includes Dynocel® adsorbents for the removal of acidic contaminants, such as hydrogen sulfide and carbon dioxide, and polar contaminants, such as methanol and dimethyl ether. We also offer Hydrocel® COS hydrolysis catalysts as well as a complete range of Durocel® inert ceramic and alumina bed supports. Besides olefin process streams such as ethylene, propylene and isobutylene, our adsorbent portfolio allows for the purification of comonomers and solvent process streams.
BETTER PRODUCTS, BETTER OPERATIONS
With Evonik’s adsorbent and service portfolio, we help make better products by providing purification solutions for chemical manufacturers and refiners. Our purification solutions provide safer, more sustainable and more profitable process operations.
WHAT IS IN IT FOR YOU?
- A complete portfolio of adsorbents for each purification challenge
- Removal of contaminants to non-detectable levels
- On-specification products, which ultimately enable the production of better products
- High-performance adsorbents such as Dynocel® 680 hybrid adsorbent
- Adsorbents which don’t require a preload step and prevent the formation of by-products
- More sustainable and more profitable process operations