Air Purification​

High purity gases are increasingly used in food processing, refinery and industrial operations. In the petrochemical industry, remote extraction locations often dictate that gas generation occurs onsite. Activated carbon plays a vital role in the separation of oxygen, hydrogen and other critical gases from the air in pressure swing adsorption systems, allowing localised generation of these critical components for industries that need it.

Activated carbon adsorption is widely used to remove hydrogen sulfide (H2S), one of the major odorous compounds, from gas streams. Not only does it have an offensive odour, the gas is highly flammable and toxic too. Impregnated activated carbon has repeatedly shown the best performance in terms of removing H2S.

Activated carbon (AC) is considered a very promising adsorbent to remove Hg from water systems. Mercury and its reacted by-products in natural gas, petrochemical and refinery feed streams can result in extreme corrosion of metallic components. Mercury is, of course, highly toxic too. Kelin has developed a series of high activity activated carbons that are chemically impregnated and are highly effective in removing mercury.

Acid gases are collectively a particular type of inorganic gas containing significant quantities of hydrogen sulphide, sulphur dioxide or similar corrosive compounds. Alkali gas is predominately ammonia but may also comprise sodium hydroxide fumes and odours from light amines. These gases can cause unpleasant odours and can be extremely toxic with effects ranging from eye irritation and headaches to respiratory issues.

Volatile organic compounds (VOCs) are, unfortunately, widely present in the air we breathe. Some are naturally occurring and some are man-made. There are numerous different kinds and many varieties are harmful to both humans’ health and the planet. Any industrial activity that emits these compounds will need to comply with the stringent regulations that are in place to limit their levels in the air. Using activated carbon is an effective way to reduce levels of VOCs and ensure compliance.