Process for the low-corrosion and low-emission co-incineration of highly halogenated wastes in waste incineration plants
First Claim
1. A process for low-corrosion and low-emission co-incineration of highly halogenated liquid wastes comprising co-incinerating a highly halogenated liquid waste in a waste incineration plant having at least one combustion chamber, a waste-heat boiler, and a multistage flue gas scrubber comprising an acidic scrubber and alkaline scrubber, wherein sulfur or a sulfur carrier is added to the combustion chamber by controlled addition in an amount substantially in proportion to the halogen loading.
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Accused Products
Abstract
The invention relates to a process and an apparatus for the low-corrosion and low-emission co-incineration of highly halogenated wastes, in particular liquid waste, in waste incineration plants having at least one combustion chamber, a waste-heat boiler, a multistage flue gas scrubber comprising a single-stage or multistage acidic scrubber and an alkaline scrubber, in which sulfur or a corresponding sulfur carrier is added under control to the primary and/or secondary combustion chamber. The amount of sulfur is controlled substantially in proportion to the current halogen loading originating from the waste in the boiler flue gas.
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Citations
28 Claims
- 1. A process for low-corrosion and low-emission co-incineration of highly halogenated liquid wastes comprising co-incinerating a highly halogenated liquid waste in a waste incineration plant having at least one combustion chamber, a waste-heat boiler, and a multistage flue gas scrubber comprising an acidic scrubber and alkaline scrubber, wherein sulfur or a sulfur carrier is added to the combustion chamber by controlled addition in an amount substantially in proportion to the halogen loading.
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12. A process according to Clam 1 wherein waste sulfuric acid is added to the primary or secondary combustion chamber via controllable metering pumps.
- 18. A waste incineration plant having a combustion chamber, a waste-heat boiler, a multistage flue gas scrubber comprising an acidic scrubber and an alkaline scrubber, wherein the waste incineration plant has one or more control devices for the controlled addition of sulfur and/or other sulfur carriers into a primary or secondary combustion chamber.
Specification