Mechanical Design of De-Dusting System for Sinter Plant

Abstract

In sinter plant a lot of dust is generated during sintering process, which cause harmful effect on health of workers, air pollution and also reduce the visibility of working environment. Therefore, de-dusting system is required to extracts the dust laden air from working site and made the working environment clean. De-dusting system have duct network, cyclonic separator, and stack as its main components. Duct network is very critical component to maintain desired amount of flow, which is achived by maintaining nearly same pressure drop inside duct network. The duct network of de-dusting system is subjected to external pressure or load, so required special attention during designing regarding selection of appropriate code, material, etc. ASME BPV section VIII division I is used to design duct subject to external pressure. The result of pressure balancing and thickness selection for pipes is validated using PIPENET and PV Elite software respectively. Cyclonic separator, which ensure collection of dust particle from the dust laden air so, design and installation of cyclonic separator is necessary. Different methods is used to design and selection of best model for cyclonic separator which suited to given criteria. The velocity at different points and pressure drop is validated through ANSYS CFX. Steel stack, is tall and lightly damped structures with circular cross-sections subjected to wind-exited vibration. The geometry of a self supporting steel stack plays a vital role because of stiffness parameter in structural behavior under lateral dynamic loading. However the basic dimensions of industrial self-supporting steel stack, such as height, diameter at exit, etc., are generally derived from the associated environmental conditions. The IS-6533: 1989 Part 1 and 2 code is used to ensure a safe working design of self supporting stack.