Nitrogen Rejection Process

A Nitrogen Rejection Unit is used to remove nitrogen from natural gas to increase the heating value of the gas. This process is generally involved cryogenic distillation to separate nitrogen gas from liquefied natural gas. The below process flow diagram illustrates the nitrogen rejection process. The design may vary from Read more…

Urea Manufacturing Process

Urea manufacturing involves two reactants, ammonia and carbon dioxide. Carbon dioxide is produced as a byproduct of the ammonia plant, hence utilized in the downstream urea manufacturing unit. The reactants first go into a synthesis reactor in which liquid ammonia and compressed carbon dioxide reacted to produce urea. Ammonia and Read more…

Zeolite

A zeolite is a naturally occurring microporous crystalline material based on silicon and aluminum that can b modified to be used in an ion exchange bed. There are other types of structures, some of which are organic synthetic materials, that are collectively and colloquially known as “resins” that are also Read more…

Refinery Process

A typical refinery process includes the following major units. Desalting of Crude Oil Crude oil is first processed to remove the water, inorganic salts, suspended solids, and water-soluble trace metals. There are two ways of desalting. In chemical desalting, water and chemical surfactant (demulsifiers) are added to the crude. The Read more…