Author: James Edwin Jones
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
A Study of the Gas Phase Reaction of Ammonia and Sulfur Dioxide
Fundamental Study of Ammonia-sulfur Dioxide Reactions to Form Solid Particles. Final Report
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
Book Description
The effects of reaction residence time, presence of inert particles and moisture content on the SO2 removal and the product particle size distributions have been determined. Results indicated that both gas phase and particle phase reach equilibria in a very short time. The presence of inert particles increases the SO2 removal efficiency slightly, with a greater increase in removal efficiency at higher surface areas. Moisture content is the most important parameter affecting SO2 removal. Increasing the moisture content from 1.6% to 6.4% by volume results in a 30% increase of the SO2 removal at a reaction temperature of 51°C. The products at near anhydrous conditions were concluded to be NH3SO2, (NH3)2SO2 and (NH4)2S2O5. While the products at humid conditions could be either the 1:1 sulfites, NH4HSO3 and (NH4)2S2O5, or the 2:1 sulfites, (NH4)2SO3 and (NH4)2SO3 -H2O, or a mixture of the 1:1 and 2:1 sulfite. Those sulfite particles could subsequently oxidize to form the more stable sulfate particles. A gas-to-particle formation model has been developed to simulate the NH3-SO2 system in the presence and absence of seed aerosols at trace water conditions. This model accounts for simultaneous nucleation, coagulation, condensation and chemical reaction. The applicability of utilizing ammonia injection to a flue gas system has been discussed in terms of two possible removal schemes. One utilizes ammonia injection alone and the other is in conjunction with the injection of Ca(OH)2 slurry in a spray dryer system. Both schemes have the potential of achieving over 90% SO2 removal from power plants burning high-sulfur coals.
Publisher:
ISBN:
Category :
Languages : en
Pages : 122
Book Description
The effects of reaction residence time, presence of inert particles and moisture content on the SO2 removal and the product particle size distributions have been determined. Results indicated that both gas phase and particle phase reach equilibria in a very short time. The presence of inert particles increases the SO2 removal efficiency slightly, with a greater increase in removal efficiency at higher surface areas. Moisture content is the most important parameter affecting SO2 removal. Increasing the moisture content from 1.6% to 6.4% by volume results in a 30% increase of the SO2 removal at a reaction temperature of 51°C. The products at near anhydrous conditions were concluded to be NH3SO2, (NH3)2SO2 and (NH4)2S2O5. While the products at humid conditions could be either the 1:1 sulfites, NH4HSO3 and (NH4)2S2O5, or the 2:1 sulfites, (NH4)2SO3 and (NH4)2SO3 -H2O, or a mixture of the 1:1 and 2:1 sulfite. Those sulfite particles could subsequently oxidize to form the more stable sulfate particles. A gas-to-particle formation model has been developed to simulate the NH3-SO2 system in the presence and absence of seed aerosols at trace water conditions. This model accounts for simultaneous nucleation, coagulation, condensation and chemical reaction. The applicability of utilizing ammonia injection to a flue gas system has been discussed in terms of two possible removal schemes. One utilizes ammonia injection alone and the other is in conjunction with the injection of Ca(OH)2 slurry in a spray dryer system. Both schemes have the potential of achieving over 90% SO2 removal from power plants burning high-sulfur coals.
Stoichiometry and Kinetics of the Gas Phase Reaction of Nitrogen Dioxide and Ammonia
Author: Felix Falk
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages : 146
Book Description
Publisher:
ISBN:
Category : Chemistry, Physical and theoretical
Languages : en
Pages : 146
Book Description
An Investigation of the Absorption of Sulfur Dioxide by an Ammoniacal Solution in a Packed Column
Author: Steven R. Auvil
Publisher:
ISBN:
Category : Scrubber (Chemical technology)
Languages : en
Pages : 232
Book Description
Publisher:
ISBN:
Category : Scrubber (Chemical technology)
Languages : en
Pages : 232
Book Description
A Study of the Reaction of Chloride and Ammonia in the Gas Phase
Author: Noah Doyal Yaney
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 78
Book Description
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 78
Book Description
Reaction of Ammonia with Gas-phase Phenyl Benzoate and Benzoyl Ions
Author: Earl Lee White
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 246
Book Description
Publisher:
ISBN:
Category : Ammonia
Languages : en
Pages : 246
Book Description
A Kinetic Study of the Gas Phase Reactions Between Nitrogen Pentoxide and Some Reducing Agents
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
Book Description
Acute Exposure Guideline Levels for Selected Airborne Chemicals
Author: National Research Council
Publisher: National Academies Press
ISBN: 030915233X
Category : Nature
Languages : en
Pages : 465
Book Description
This book is the eighth volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals, and reviews AEGLs for acrolein, carbon monoxide, 1,2-dichloroethene, ethylenimine, fluorine, hydrazine, peracetic acid, propylenimine, and sulfur dioxide for scientific accuracy, completeness, and consistency with the NRC guideline reports.
Publisher: National Academies Press
ISBN: 030915233X
Category : Nature
Languages : en
Pages : 465
Book Description
This book is the eighth volume in the series Acute Exposure Guideline Levels for Selected Airborne Chemicals, and reviews AEGLs for acrolein, carbon monoxide, 1,2-dichloroethene, ethylenimine, fluorine, hydrazine, peracetic acid, propylenimine, and sulfur dioxide for scientific accuracy, completeness, and consistency with the NRC guideline reports.
Fundamental Study of Ammonia-sulfur Dioxide Reactions to Form Solid Particles
Author: Hsunling Bai
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
Book Description
Gas Phase Ion-Molecule Chemistry of Carbon, Nitrogen and Oxygen Compounds
Author: C. H. DePuy
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
The gas phase reaction of nitrogen, silicon, sulfur and phosphorous organic compounds with anions have been investigated using the flowing afterglow technique. Studies have been made which compare mechanisms by which first and second row elements react with anions. New methods for the generation of specific anions in the gas phase have been developed. A variety of new types of gas phase ions (PH2( - ), R5Si( - ), C3H2NO2( - ), etc.) have been prepared and their chemical reactions studied. Originator supplied keywords include: Flowing afterglow; Selected in flow tube; Reactivity; Mechanism; Thermochemistry; Trimethyl phosphite; Silyl anions; Phosphide anion; Nitrite esters; Sulfur dioxide; Methaneimine; Aza allyl anion; Sulfides; and Electron affinity.
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
The gas phase reaction of nitrogen, silicon, sulfur and phosphorous organic compounds with anions have been investigated using the flowing afterglow technique. Studies have been made which compare mechanisms by which first and second row elements react with anions. New methods for the generation of specific anions in the gas phase have been developed. A variety of new types of gas phase ions (PH2( - ), R5Si( - ), C3H2NO2( - ), etc.) have been prepared and their chemical reactions studied. Originator supplied keywords include: Flowing afterglow; Selected in flow tube; Reactivity; Mechanism; Thermochemistry; Trimethyl phosphite; Silyl anions; Phosphide anion; Nitrite esters; Sulfur dioxide; Methaneimine; Aza allyl anion; Sulfides; and Electron affinity.