Hazardous Waste Disposal with Thermal Oxidation - John Zink ...

More documents

Recommendations

Info

Configuration 1.6 displays a regenerative oxidizer which uses refractory packing to absorb and transfer heat to the outgoing or incoming air stream. Inlet and outlet ductwork, valves and an induced draft blower provide the means for the contaminated air to enter and exit the chambers independently. The paths of flow are controlled by action of inlet and outlet valves. HC contents is usually limited by the lower flammability limit instead of by overall HC concentration. WASTE EXAMPLE PRODUCTS OF OXIDATION Gas Liquid Chamber No 1 Contaminated Air Fuel Tail Gas Organic Acid Configuration 1.6 : Waste Process T. O. FG, NO XA ,SO XA FG, NO XA Chamber No 2 Chamber No 3 Stack Flue Gas Gas or Liquid Waste - High Levels of SOx or Cl 2 / HCl The following two diagrams show configurations of a process to dispose of either a gas or liquid waste which produces flue gas containing excessive amounts of SOx or Cl 2 / HCl. Configuration 2.1 consists of a T.O., a quench section which cools the flue gas to its saturation temperature by directly contacting it with water, two adiabatic absorbers which remove inorganic acids and chlorine, and a vent stack. Water is used in the first absorber to remove a majority of the HCl from the flue gas. The residual HCl and virtually all the entering Cl 2 leaves the absorber with the flue gas. A second absorber with caustic is used when either the Cl 2 or HCl in the flue gas exiting the first absorber exceeds allowable levels. This occurs when excessive Cl 2 is formed in the T.O. (see Figure 2A for HCl/Cl 2 equilibrium) or when the first absorber is used to make acid. WASTE EXAMPLE PRODUCTS OF OXIDATION Gas Liquid VCM H FG, NOXA ,Cl2 / HCl 2O PCB Caustic Pesticides Hydrochloric Waste Acid Air Fuel T. O. Quench Absorber Caustic Scrubber Configuration 2.1 : Waste Process 9 Purge Salt Effluent Flue Gas Stack
Figure 2A: Equilibrium Constant vs. Temperature Configuration 2.2 consists of a T.O., a heat recovery boiler which produces steam in cooling the flue gas to 500° F, two absorbers, and a vent stack. The first absorber is fitted with a lower section of ceramic packing which cools the 500° F flue gas to saturation temperature prior to its entry into the acid absorption section, and the second absorber removes residual HCl and CI 2 . WASTE EXAMPLE PRODUCTS OF OXIDATION Gas Liquid Waste VCM FG, NOXA ,Cl2 / HCl PCB Caustic Pesticides Hydrochloric H Steam 2O Acid Flue Gas Air Salt Effluent Fuel T. O. Boiler Configuration 2.2 : Waste Process Acid Absorber 10 Caustic Scrubber Stack
Page 1 and 2: HAZARDOUS WASTE DISPOSAL BY THERMAL
Page 3 and 4: Environmental concerns require that
Page 5: Figure D is a plot of adiabatic fla
Page 8 and 9: Configuration 1.3 shows a T.O. fitt
Page 12 and 13: When the waste stream is highly exo
Page 14 and 15: WASTE EXAMPLE PRODUCTS OF OXIDATION
Page 16 and 17: Configuration 5.2 consists of the f
Page 18 and 19: Waste Containing Combustible Fine S
Page 20 and 21: WASTE EXAMPLE PRODUCTS OF OXIDATION

Hazardous Waste Disposal with Thermal Oxidation - John Zink ...

Create successful ePaper yourself

Delete template?

Save as template?