Atmospheric distillation process fundamental concepts. The 22 units presented in the refinery process diagram are categorized as. Refining is the process of converting crude to usable products. Crude oil distillation an overview sciencedirect topics. The crude oil distillation unit cdu is the first processing unit in virtually all. Crude distillation unit cdu optimization the use of multichannel.
The crude distillation unit is the first unit that processes petroleum crude in any refinery. A schematic diagram of an atmospheric crude fractionation unit is shown in figure 11. Conversion process typical distillation unit process desciptions. Pdf distillation process of crude oil researchgate. Crude distillation unit cdu is at the frontend of the oil refinery. In addition, in some oil distillation units, gas oil is not produced and. The oil refining process starts with a fractional distillation column. A wide assortment of processes and equipment not directly involved in the refining of crude oil is used in functions vital to the operation of the refinery.
After going through the fractional distillation, crude oil. Crude distillation unit cdu optimization the use of. The process simulation system proii is used to build a rigorous model for the crude oil distillation unit based on the conventional twofurnace and. Petroleum refining processes are the chemical engineering processes and other facilities used. This distillation occurs in the refinery crude unit. Revamping crude and vacuum units to process bitumen, sutikno, ptq,q2. In the vacuum distillation unit, topped crude is heated with a process heater to temperatures ranging from 370 to 425c 700 to 800f. Pdf crude oil is a fossil fuel, it was made naturally from decaying plants and. Modern crude distillation towers can process 200,000 barrels of oil per day. Crude oil distillation unit cdu is significant in refinery, and retrofitting a crude oil distillation unit is more common than building a new one as consideration of the enormous investment cost. Pdf the work is considering of technology of crude distillation unit in general modern technology of refining process. There objective is to separate the mixture into several fractions like naphtha, kerosene, diesel and gas oil.
Revamping crude and vacuum units to process bitumen, sutikno, ptq,q2 2015. The crude distillation unit cdu has the highest energy saving potential among all other process units. The objectives of the unit include rejection of major contaminants and an initial cut of the crude oil into streams for further processing. The heated topped crude is flashed into a multitray. Understanding the fundamentals of crude unit operation is critical to effective design, modification, operation and troubleshooting refinery crude units. Atmospheric crude distillation unit using voice, video. Overview i introduction i crude oil i process overview i downstream refinery. Crude units are the first units that process petroleum in any refinery. Crude oil distillation is more complicated than product distillation, in part because crude oils contain water, salts, and suspended solids. Consider practical conditions for vacuum unit modeling. The crude oil distillation unit cdu is the first processing unit in virtually all petroleum.
Overview of crude units crude units are the first units that process petroleum in any refinery. The work is considering of technology of crude distillation unit in general modern technology of refining process. Crude distillation unit cdu optimization the use of multichannel online ftnir analyzer technology for the optimization of an atmospheric distillation unit cdu advanced process control is often implemented using a traditional chemical engineering approach through multiple control loops, heat mass balances and. The petroleum refining process entails the separation of. The distillation process of crude oil is the main concern of this paper. Crude water hen hen desalter sour water furnace steam. To separate topped crude into components, it must be distilled in a vacuum column at a very low pressure and in a steam atmosphere. Step 1 in the refining process is to remove these contaminants so as to reduce corrosion, plugging, and fouling of equipment and to prevent poisoning catalysts in processing units.