Kinetic Reactions Modeling and Optimization of Claus Process

There are many pollution and environmental problems in the human ecosystem. Different methods are used to remove sulfur from sour gases, such as the Basic Claus process and the Modified Claus process. Various chemical software, including Aspen Plus and Chemcad ECT, are employed for the simulation and optimization of the Claus process. This study introduces the Gibbs free energy method alongside a model of the Claus process, incorporating new parameters in the reaction furnace to reduce the error from 33% to 7%. Additionally, a waste heat boiler installed at the reaction furnace produces high-pressure steam and facilitates the decomposition of hydrogen sulfide. A new rate of reaction is proposed to enhance hydrogen production in the chemical process. Simulations conducted in Aspen Plus illustrate the maximum utilization of the process, whereby suitable operating conditions in the reaction furnace lead to the maximum destruction of ammonia gas in the reactor. Increasing the oxygen concentration and feed temperature results in a decrease in ammonia production in the reaction furnace, maintaining levels below the acceptable threshold of 150 ppm. The presence of oxygen components significantly affects these dynamics.