Reducing of CO2 emission and energy consumption in Hydrodesulfurization process

Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. One of the main human activities that emit CO2 is the combustion of fossil fuels (coal, natural gas, and oil) for energy in industrial sector. Improving the energy Efficiency of process for example pinch analysis is a way to reduce energy consumption, and thus CO2 emissions. Process heat integration using pinch analysis is a respected tool for achieving energy efficiency. Pinch analysis is a systematic technique for analyzing energy flow, capital investment and emission through an industrial process based on fundamental thermodynamics.This article explains how to use pinch analysis in Hydrodesulfurization process design and operation to attain real world energy efficiency gains. The HDS process is a catalytic chemical process widely used to remove sulfur from natural gas and from refined petroleum products such as gasoline, jet fuel, kerosene, diesel fuel. The HDS process is an energy intensive process. The purpose of this study is identifying opportunities of energy saving and reducing GHG emissions within the Hydrodesulfurization process through analyzing the current operating conditions. The results show the heat exchanger network could be revised and modifications proposed would reduce the operating and energy costs. According to the results, there is a possibility of MP steam production about 13300 lb/hr in respect to base case and consequently reduces annually 11000 ton equivalent CO2.

کلیدواژه ها:

Process heat integration ، Hydrodesulfurization ، steam production ، CO2 emission