High temperature aerosol processing Overview Example of TiO2 Vapor phase generators Spray pyrolysis Spray generation Jung Hyeun Kim’s presentation.

Slides:

Advertisements

Similar presentations

Gas phase preparation of nanoparticles

Advertisements

Changes in State.

Ch 23 Section 1 Notes.

Chapter 8: Crowl & Louvar

Dept. of Chemistry, SCSVMV University

John Flake, Semiconductors / Electronic Materials Surface Functionalization of Silicon Nanowires, BOR-RCS $103k/3yrs Significance: Silicon nanowires are.

Che5700 陶瓷粉末處理造粒 Granulation To produce free flowing particles for further processing; often after powder synthesis and before forming of products, may.

State Changes AKA= Phase Changes. Review: 3 States of Matter Solid Liquid Gas.

AA and Atomic Fluorescence Spectroscopy Chapter 9

Air pollution control methods. Introduction Air pollution control can be generally described as a “separation” technology. The pollutants, whether they.

Do Now: Copy Warmup #7 Electric power plants that burn fossil fuels generate billions of tons of carbon dioxide and other gases. How might replacing these.

Interfacial transport So far, we have considered size and motion of particles In above, did not consider formation of particles or transport of matter.

CHOICE OF REACTOR REACTION TEMPERATURE Single Irreversible or reversible Endothermic Reactions: high temperature Single Reversible Exothermic Reaction:

Gas Phase Growth Techniques for Quantum Dots Weiqiang Wang Department of Mechanical Engineering, University of Rochester Muzhou Jiang Department of Electrical.

Nanoscience An area dealing with study of material of very small dimension typically of order of 10e-9. Concerns with chemistry, physics & biology all.

Tablet Coating Why coat tablets? Types of coatings  sugar coating  film coating  press coating (compression coating) B. Amsden1CHEE 440.

The Deposition Process

INTEGRATED CIRCUITS Dr. Esam Yosry Lec. #5.

Thin Film Deposition Prof. Dr. Ir. Djoko Hartanto MSc

Phase Changes Melting Vaporization Condensation Freezing Sublimation.

PEALD/CVD for Superconducting RF cavities

THE EFFECT OF TYPE OF NANOPARTICLES ON THE QUENCHING PROCESS

Water Phase Change Graph

SynGas Gasifier ALTERNATIVE ENERGY Technology Presentation.

Nanomaterials - carbon fullerenes and nanotubes Lecture 3 郭修伯.

Nanostructure Formation: 1-D

Adsorption. What is Adsorption? Adsorption is the transfer of a material from one liquid or gaseous state to a surface. The substance that is transferred.

Environmental Impacts of Chemical Industries Dr. Lek Wantha.

Lecture Objectives: Continue with power generation Learn basics about boilers and furnaces.

States of Matter Kinetic Molecular Theory Four States of Matter Thermal Expansion.

Chemistry Unit Review. The smallest particle that a compound with covalent bonds is called what? A molecule.

PVD AND CVD PROCESS Muhammed Labeeb.

Colloids Solutions vs Colloids Colloidal Mixture True Solution The Tyndall Effect.

 Spray drying - formation of droplets from the bulk liquid – moisture removal  liquid droplets - sprayed –drying chamber  the low-humidity hot gas.

Plasma Spray Process Plasma jet can reach very high temperature > 20,000 K Plasma disassociation effect (ionization) is important to enhance heat transfer.

$1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.

SECTION 2: CHANGES OF STATE Chapter 2: Solids, Liquids, and Gases.

Spray Pyrolysis Scott Allen Physics Department University of Guelph chemical synthesis of nanostructures.

Properties of Matter. You will perform a circuit of eight inquiries to observe how matter behaves. The inquiries involve the following: different states.

INTERNAL COMBUSTION ENGINES LECTURER PROF.Dr. DEMIR BAYKA.

States of Matter Chemistry Unit 5.

Reminders Quiz#2 and meet Alissa and Mine on Wednesday –Quiz covers Bonding, 0-D, 1-D, 2-D, Lab #2 –Multiple choice, short answer, long answer (graphical.

PHASE- PHASE- A state in which matters exists.

Matter and its Phases. Matter Is anything that takes up space and has mass. Volume – Measure of the space an object occupies Mass – Measure of the amount.

Che5700 陶瓷粉末處理 Powder Synthesis Solid state method:  Solid-solid reaction; decomposition of solid; oxidation or reduction of solid Liquid phase method:

2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt States of Matter Kinetic Theory.

NANO PHYSICS Unit-6 Sub: Engineering Physics By: Pankaj Sorathiya.

Che5700 陶瓷粉末處理 Gas Phase Synthesis of Ceramic Powders Characteristics: Very fine powders (smallest concentration of precursor) Additives can be uniformly.

BY KRISHNAN.P Chemical Vapour Deposition (CVD) is a chemical process used to produce high purity, high performance solid materials. In a typical.

CHANGES IN STATES OF MATTER. THE STATE OF THE MATERIAL DEPENDS ON TEMPERATURE!! 1. When the temperature of a material increases, the particles absorb.

CHAPTER 2: MATTER. CHANGES OF STATE When matter changes from one state to another, we call this a phase change Thermal energy is related to the microscopic.

OVERVIEW OF PMSB INCINERATOR PLANT 1.Primary Chamber 3.Secondary Chamber 4.Heat Exchanger 5.Cooling Tower 7.Rotary Contactor 8.Fabric Filter 9.ID Fan 10.Stack.

$1 Million $500,000 $250,000 $125,000 $64,000 $32,000 $16,000 $8,000 $4,000 $2,000 $1,000 $500 $300 $200 $100 Welcome.

1 SOLID PROPELLANT ROCKETS Solid fuel rockets rely on controlled explosion of a mixture of substances Nearly a homogeneous material that is burned Similar.

Mar 24 th, 2016 Inorganic Material Chemistry. Gas phase physical deposition 1.Sputtering deposition 2.Evaporation 3.Plasma deposition.

Liquid Flame Spray Deposition on Temperature Sensitive Substrates Antti Toropainen

Other deposition methods

Deposition Techniques

Submitted by SK Ruksana M.Sc. Chemistry

Kinetic Molecular Theory

Production of Nanoparticles by Electrosprays

Catalyst Deactivation

Kinetic Theory of Matter

Introduction Surface Engineering By Israa Faisal

Chemical Properties February

Chapter 6: States of Matter

Presentation transcript:

High temperature aerosol processing Overview Example of TiO2 Vapor phase generators Spray pyrolysis Spray generation Jung Hyeun Kim’s presentation

Aerosol Reactors Vapor Phase Reactors - Titania, Fumed Silica, Nitrides, etc. - Hot Wall, Flame, Plasma, Laser Ablation, Laser Pyrolysis Spray Pyrolysis - Ferrites, Single and Multicomponent oxides, metals and alloys - Spray Nozzles - single and two fluid, Acoustic Sprayers and Nebulizers

Problem Particles Process Effluents - Power Plant Fly Ash, Smelter Emissions, Sintering Plants Contaminants - Contamination in Pharmaceutical, Semiconductor Industries (Mr. Doug Kremer on Thursday) Occupational Exposure

Process Players Solid/gas reactors - Reactant Feeding Size Classification - Powder Dispersion in Gases Coatings on Surfaces - Condensation

PRODUCTS Titania pigment, Carbon blacks, Fumed silica, Alumina etc. Metals and alloys - Ni, Ag, Au, Pd - electronics circuits Multicomponent Oxides - Ferrites, Superconductors,Dielectrics Nanoscale Materials

Vapor Phase Reactors Precursor is in vapor phase Chemical reaction to condensable species or condensation of vapor happens to make products (can have combination of both) Chemically reactive environment can be: flame, plasma, thermal with resistive heating, thermal via laser etc… Condensation induced by mixing, expansion (big pressure gradients!) or both

Titania Process TiCl 4 Oxygen Flame Agglomerates Molecular Clusters Product Thermophoresis - Wall Deposits Fuel Fabric Filter

Titania Process Nucleation - Particle Formation Coagulation and Aggregate Formation Thermophoresis and Wall Losses Solid/Gas Separation - Fabric Filter(Bag House Collectors)

Agglomeration and Aggregation

Spray Pyrolysis Very common method for making particles Here precursor starts as droplets or solid particles Thermal, plasma, flame also used as reaction environment but reaction is in liquid or solid phase (tiny microreactors!) Mr. JH Kim will discuss this…

Droplet Drying and Conversion Drying and conversion rates affect morphology of the particles Can have hollow particles or can shatter particles Mr. Kim will talk about effect of solvent on chemistry of particles How to make spray? Some examples…

Time: 0 sec Time: 71 secTime: 95 sec Time: 117 secTime: 145 secTime: 188 sec Video Images of Drying Droplet

Condensation Aerosol Generator Vaporizer Condenser Gas Heater

Nebulizer Impaction Target Aerosol

Nebulizer/Condensation Generator Nebulizer Evaporator Condenser Aerosol