نتایج جستجو برای: steam activation

تعداد نتایج: 446819  

2016
Kehinde Oluoti Tobias Richards

The astronomical increase in global energy demand makes locating energy sources other than fossil fuels worthwhile. The use of tropical biomass wood waste as a renewable energy source was investigated in this study. The thermal conversion analysis of Albizia gummifera (ayinre) was carried out in a thermobalance reactor via steam gasification under varying temperature (700 to 1000 °C) and steam ...

1999
David Harper Michael Wolcott Timothy Rials

The cure of polymeric 4-4’ diphenyhnethane diisocyanate, PMDI, in wood composite manufacturing has been the subject ‘of much research. The exact .contribution of polyurethane, polyurea, and polyurete formation to PMDI/wood bonding is still debated. This study foregoes the mechanism controversy and studies the cure from a panel consolidation process. Micro-dielectric analysis, JJDEA, was ut i l ...

Journal: :Chemical Engineering Journal 2021

In the present work, we explore use of steam in CaCO3 calcination step Calcium Looping process devised for thermochemical energy storage (CaL-TCES). Steam produces a double benefit: firstly, it fastens calcination, allowing reduction temperature needed to attain full short residence times, as those required practice, resulting savings. This behaviour is justified on basis kinetics study results...

Journal: :Journal of environmental chemical engineering 2021

A low cost-biomass, olive stone, was used as a carbon precursor to synthesize activated biochar. Experiments were carried by single step activation for two agents (steam and CO2) using bench scale high-pressure thermobalance. Temperature, pressure, flow rate holding time optimized according the highest adsorption capacity of biochar obtained. In this respect, conditions established at 900 °C 30...

2008
Matthew P. Hyman John M. Vohs

Introduction The steam reforming of alcohols, particularly methanol and ethanol, presents a promising method of producing hydrogen. Due to its high activity at relatively low temperatures, Pd/ZnO has received attention as a methanol steam reforming (MSR) catalyst to produce H2 at very high CO2 selectivity. 1 Pd supported on most other materials dehydrogenates methanol to CO. Similarly, Co catal...

1996
Greg Harrell

This Steam System Survey Guide provides technical information for steam system operational personnel and plant energy managers on some of the major opportunities available to improve the energy efficiency and productivity of industrial steam systems. The guide covers five main areas of investigation: (1) profiling a steam system, (2) identifying steam properties for the steam system, (3) improv...

2011
R. A. Chaplin

1. Steam Generation 1.1. General Characteristics 1.2. Circulation in Boiling Water Reactors 1.3. Steam Generation in CANDU Reactors 1.4. Steam Generators 1.5. Steam Generator for PWR and CANDU Systems 1.6. Heat Transfer 2. Steam Generator Operation 2.1. Swelling and Shrinking 2.1.1. Steady State Swelling and Shrinking 2.1.2. Transient Swelling and Shrinking 2.2. Level Control 2.3. Carryover 2.4...

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