The modeling of thermal reaction furnaces of Sulfur Recovery Units (SRUs) is a rather complex problem since it involves different modeling scales such as the kinetic/molecular scale, the reactor scale, and the chemical process scale. This work introduces the multi-scale modeling approach to characterize the kinetic and reaction engineering scales for the thermal section of SRUs, involving the r...

This paper describes how an industrial-scale real-time computing platform, namely the Honeywell TDC3000, has been incorporated into the undergraduate process control course at Arizona State University. The mixing tank dynamics and gas oil furnace control experiments described in this paper are among eleven laboratory exercises developed for this course which provide students with unique insight...

Abstract The current control system of an industrial box furnace usually uses a proportional-integral-derivative (PID) controller. Typically, this requires on-site tuning and specific heuristic knowledge, such that the can have acceptable performance but not optimal. However, by using proper model in operating range from designing phase, it be designed more efficient capable to reach better pro...

Concurrently to research conducted on ordinary Portland cement (PC), new types of binders were developed during the last decades. These are formed by alkali-activation of metakaolin or ground-granulated blast furnace slag (GGBFS) and are named, respectively, geopolymers (GP) or alkali-activated slag (AAS). Four different cementitious materials were synthesised: PC, AAS, GP, and a mix GP-AAS and...

A perfect control of nanostructure growth is a prerequisite for the development of electronic and optoelectronic device/systems. In this article, we demonstrate the growth of various ZnO-derived nanostructures, including well-ordered arrays of high aspect ratio single crystalline nanowires with preferred growth direction along the [0001] axis, nanowalls, and hybrid nanowire-nanowall structures....

Incineration is one of the most common methods for treatment industrial waste. Large amounts bottom ash are buried without being reused. By reducing components such as toxic metals contained in under suitable incineration conditions, landfill waste can be reduced, and re-use increased. In this study, effects air supplied to a commercialy used rotary stoker furnace was investigated first step im...

SiC nanowires have been synthesized at 1,600 degrees C by using a simple and low-cost method in a high-frequency induction furnace. The commercial SiO powder and the arc-discharge plasma pretreated carbon black were mixed and used as the source materials. The heating-up and reaction time is less than half an hour. It was found that most of the nanowires have core-shell SiC/SiO(2) nanostructures...