Abstract:A refinery is a production facility composed of a group of chemical engineering unit processes and unit operations refining certain materials or converting raw material into products of value. The major equipments in a refinery are furnace and a distillation unit. Distillation is the separation or partial separation of a liquid feed mixture into components or fractions by selective boiling (or evaporation) and condensation. The characteristics of the refinery products are dependent on the furnace’s outlet temperature and the parameters of the distillation tower.
The control scheme at CPCL has drawbacks that affect the performance of the furnace and distillation column. The drawbacks are analyzed and a modified control scheme is proposed. This control scheme will reduce the deviations caused by the existing control system at CPCL.
The Furnace’s outlet crude oil temperature depends on the inlet crude oil flow and the fuel flow (both fuel oil and fuel gas). By designing control algorithms and modifications, we are going to overcome the unstabilised furnace outlet temperature of CPCL (any refining industry).The furnace inputs are air, gas, steam and oil. By controlling these input parameters using PIC microcontroller, we will get the steady state furnace outlet temperature.
In Distillation tower, the level and the temperature of the tray should be maintained in order to obtain the distillation products in an efficient way. In CPCL, there are frequent tray level changes and there is dependency between temperature and level. In order to overcome these disadvantages both these parameters are maintained by controlling the flow of the recycled water from the tray.
In real time distillation column and furnace cannot be constructed in small scale. Therefore, an electrical furnace and a simulation of distillation column are created and the closed loop control of the furnace temperature is implemented. The distillation column is simulated as a open loop control process. PIC microcontroller is used for interfacing with the PC and for implementing the control program. PIC microcontroller PIC 16F877A is used.
Keywords:Furnace, Distillation column, PIC microcontroller. Title: Implementation of Furnace Process System for Distillation Column Author: Santhiya.R, V.Ravin Rose, Priya.G, Priyadharshini.R ISSN 2393-8471 International Journal of Recent Research in Civil and Mechanical Engineering (IJRRCME) Paper Publications
Partial Replacement of Cement in Concrete by Hyposludge
Abstract: To save energy and to earn carbon credit is very much essential for the betterment of mankind. To produce 1 tons of Ordinary Portland Cement we use earth resources like limestone, etc & during manufacturing of 1 t of Ordinary Portland Cement an equal amount of carbon-dioxide are released into the atmosphere which is harmful to the environment. Energy plays an important role in era of developing countries like India. By earning carbon credit by using industrial waste (hypo sludge) for Building Materials like cement, the energy & environment can be saved.
Keywords: carboncredit, portlandcement, limestone, hyposludge. Title: Partial Replacement of Cement in Concrete by Hyposludge Author: Yazhini. S, Andavan. S ISSN 2393-8471 International Journal of Recent Research in Civil and Mechanical Engineering (IJRRCME) Paper Publications
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