Low-carbon operation technologies of the blast furnace (BF) are crucial for reducing carbon dioxide emissions from steelmaking industry. The variation characteristic permeability and structure in a BF lumpy zone has critical impact on achieving low-carbon operations. Still, their influences have not been fully understood, related studies very limited. To solve problem deteriorating furnaces aft...

In this study, a water- and heavy hydrocarbon-removal process of natural gas refinery currently in operation using the temperature swing adsorption method is modeled investigated. The aim to decrease hydrocarbon dew point −10 °C diminish water content about 0.1 ppm. This unit consists four beds with two layers which are state, while others kept regeneration state. composition bed specification ...

Abstract This paper concerns a method and test set-up to measure the permeability of plates metal foams sets wire meshes used control flows in fluid filters other flow systems designed yield constant velocity distributions over large cross sections flows. The is based on considerations using Ergun equation describe pressure losses packages mono-dispersed spheres. One correlation suggested for k...

Currently, there are hardly any works that explicitly claim the political title “feminist” or “activist” while fully exploring feminist translation. Without necessarily embracing and recognizing transgressive reactionary processes of translation in movements activisms, existing collections generally explore “connections between gender women translation” (p. 2). This essay collection suggests im...

A CFD technique for predicting the performance of axisymmetric packed bed filters has been developed. The effect on the pressure drop of a non-uniform voidage distribution within the filter bed has been modelled. A radial voidage distribution was derived from a predictive model based on a modified Mueller equation. The pressure loss through the bed was calculated from the Ergun equation, using ...

The Restricted Shortest Path (RSP) problem, also known as the Delay-Constrained Least-Cost (DCLC) problem, is an NP-hard bicriteria optimization problem on graphs with n vertices and m edges. In a graph where each edge is assigned a cost and a delay, the goal is to find a min-cost path which does not exceed a delay bound. In this paper, we present improved approximation schemes for RSP on sever...

Ceramic foams are a new structural material, characterized by a high porosity and a large surface area and made of megapores interconnected by filaments. This results in a structure with low resistance to fluid flow, making them appropriate for use as a filter. This work studies the influence of several structural parameters, such as porosity, tortuosity, surface area and pore diameter, in pred...

In this work, we develop a self-consistent physical model of bubbles in a gas-solid 1 two-phase flow. Based on PR state equation, and a detailed specific heat ratio equation of bubbles, 2 we self-consistently evaluate kinetic equations of the bubbles on the basis of Ergun equation, 3 thermodynamic equation and kinetic equations. It is found that the specific heat ratio of bubbles in 4 such syst...