M. Rashid Khan

Distributed temperature control for solar energy system: An LMI-approach

In this paper a novel method to design a controller for thermal solar energy system is proposed. The method developed criteria to select a controller that ensures the stability of the system and removes any offset that may occur due to disturbances. To ensure the stability of the controlled system, Linear Matrix Inequalities (LMI) based criteria are developed to obtain a suitable value for the controller gain. The method is verified through a simulation where the controller succeeded in preserving the required output value.

Sulfur removal from heavy and light petroleum hydrocarbon by selective oxidation

Abstract: Environmental concerns have driven the need to reduce sulfur-containing compounds to an extremely low level in transportation fuels. Conventional hydrodesulfurization catalysts can be used to remove a significant portion of the sulfur from petroleum distillates. Removing the last traces of sulfur compounds where the sulfur atom is sterically hindered, as in multi-ring aromatic sulfur compounds, is a significant challenge. One recent area of innovation to remove sulfur from upgraded crude is oxidative desulfurization, a process that can operate under mild conditions and without the need for external H2. In this paper, the mechanism, process, and the new inventions of selectively oxidative desulfurization are reviewed.

Advanced process control for clean fuel production: smart plant of the future

Abstract: Advanced process control (APC) technologies can yield remarkable benefits in improving the efficiency and profitability of plant operations. In this chapter, we will describe some key smart control technologies that help deliver significant improvements to operations and, therefore, to profits, in a most cost-effective and timely way while minimizing energy loss and mitigating CO2 emissions. In addition, the chapter will highlight new innovations in this area. The future of advanced technologies will be shaped by new innovations in control systems and in advanced sensing devices such as biosensors.