thermal treatment disposal incineration l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Thermal Treatment/Disposal: Incineration PowerPoint Presentation
Download Presentation
Thermal Treatment/Disposal: Incineration

Loading in 2 Seconds...

play fullscreen
1 / 23

Thermal Treatment/Disposal: Incineration - PowerPoint PPT Presentation


  • 99 Views
  • Uploaded on

Thermal Treatment/Disposal: Incineration. Chapter 12. Activity. Why use incineration? What are the drawbacks?. Regulations. Historical perspective HW incinerators vs. cement kilns and light aggregate kilns and industrial boilers and furnaces. General Schematic. Rotary kiln Fixed hearth

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Thermal Treatment/Disposal: Incineration' - miller


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
activity
Activity
  • Why use incineration?
  • What are the drawbacks?
regulations
Regulations
  • Historical perspective
  • HW incinerators vs. cement kilns and light aggregate kilns and industrial boilers and furnaces
types of incinerators
Rotary kiln

Fixed hearth

Liquid injection

Cement and lime kilns

Fluidized bed

Boiler systems

Oxygen enriched

Infrared

Fume

Multiple chamber

Multiple hearth

Cyclonic

Auger combustor

Two-stage (starved air)

Catalytic

Molten salt

Types of Incinerators
other thermal processes
Other Thermal Processes
  • Plasma arc pyrolysis
  • Microwave discharge
  • Advanced electrical reactor
  • In situ vitrification
  • Wet air oxidation
  • Supercritical water oxidation
  • Calcination
  • Thermal desorption
classifications of incinerators
Grate

Open “rack”

Stationary or moving

Air circulation

Large and irregular wastes

Hearth

Solid “plate”

Variety of waste

Suspension

Sand or alumina bed fluidized with air

Relatively uniform feed size

Classifications of Incinerators
typical process flow diagram
Typical Process Flow Diagram

Waste

Storage

Pre-processing/blending

Pollution Control

Incineration

Flue Gas

Ash

Stabilization

Effluent

Landfill

POTW

combustion requirements
Combustion Requirements

3 T’s

+

Excess O2

typical excess air reactions
Typical Excess Air Reactions

CHCl+ O2 + N2 CO2 + H2O + HCl +

O2 + N2 + heat

flue gas quench
Flue Gas Quench
  • Cool to:
    • 500 - 700oF for spray dryer
    • 180oF for low-temperature equipment
  • Air or water
  • Concurrent or counter-current flow
air pollution control
Air Pollution Control
  • Pollution:
    • Particulates (including 10 priority metals)
    • Acid gases
  • Systems
    • Wet
    • Dry
trial burn
Trial Burn

Test incinerator

  • Principal organic hazardous constituents (POHCs) destruction and removal efficiencies (DREs)
  • HCl
  • Particulates
  • CO
  • Metals
  • Dioxin and furans
pohc dre
POHC DRE

At least 99.99% on all selected POHCs during trial burn

hcl emissions
HCl Emissions

Emission no greater than larger of

4 lb/h or 1% of HCl in stack gas

particulate emissions
Particulate Emissions

At most 0.08 grains/dscf corrected to 7% O2

or

180 mg/dscm corrected to 7% O2

emissions example
Emissions Example

Example 12-2 (p. 746)

Does incinerator performance meet requirements?

co emissions
CO Emissions

100 ppm by volume as a 60-minute rolling average corrected to 7% O2 on a dry basis

co and particulate example
CO and Particulate Example

Example 12-11 (p. 804)

combustion efficiency
Combustion Efficiency

At least 99.99%

dioxin and furan emissions
Dioxin and Furan Emissions

0.4 ng/dscm

or

0.0001%

slide22
PCBs

At least 99.9999% DRE for liquid

Dwell time of 2 s at 1200  100oC and 3% EA in stack gas

OR

Dwell time of 1.5 s at 1600  100oC and 2% EA in stack gas

design
Design

Example 12-7 (p. 765)