Carbon beds are an integral part of most amine based (MEA, DEA, MDEA, DIPA, DGA) gas treating units. In some cases, the carbon bed is on the rich amine stream, although it is often on the lean stream. In most cases, there is a small slip stream 5-25% (of the main flow) that contacts the carbon. [...]
Often refined product streams have fluid quality specifications that need to be met in order for a product to be saleable. There a number of contaminants that may be present, including catalyst fines, water, corrosion products among other contaminants. Transcend Solutions has developed a tremendous expertise in identifying the various contaminants and providing effective separation technologies [...]
Sour water units suffer from hydrocarbon and particulate fouling, tower instability and hydrocarbon carryover to the sulfur plant. Refinery sour water streams contain free and emulsified hydrocarbons. These hydrocarbons are difficult to settle out, despite 3-5 day residence time tanks. As a result, refineries are faced with heat exchanger fouling, energy costs caused by inadequate heat [...]
Optimal operation of amine absorption units requires efficient liquid/liquid or gas/liquid contact. The feed often contains heavy hydrocarbons. If these are not effectively removed, they will be washed into the amine. Much of the hydrocarbons either build up in the regeneration column or recirculate depending on boiling range. There are corrosion products formed due to the [...]