Method of removing dioxins in a waste incineration plant
AssigneeKabushiki Kaisha Kawasaki Giken
InventorEiichi Yoshino
Life of this patent
Estimating the term…
Abstract
In a method of removing dioxins in a waste incineration plant for cooling combustion gases from an incinerator by means of a first and/or second heat exchangers, and for exhausting the gases into the atmosphere through a dust collector of a bag-filter. The method comprises the steps of controlling a temperature of the gases right after the first heat exchanger within a range of 200.degree. C..about.140.degree. C., by use of the first heat exchanger, and also controlling a pressure loss of the gases right after the first heat exchanger within a range of -20 mmH.sub.2 O.about.-60 mmH.sub.2 O.
Claims8
In a method of removing dioxins in a waste incineration plant for cooling combustion gases from an incinerator by means of a first heat exchanger for heating air for combustion, and for exhausting the gases into the atmosphere through a dust collector of a bag-filter, the said method comprising the steps of:
- controlling a temperature of the gases right after the first heat exchanger within a range of 200.degree. C..about.140.degree. C., by means of the first heat exchanger, and
- also controlling a pressure loss of the gases right after the first heat exchanger within a range of -20 mmH.sub.2 O.about.-60 mmH.sub.2 O.
In a method of removing dioxins in a waste incineration plant for cooling combustion gases from an incinerator by means of a first heat exchanger for heating air for combustion and a second heat exchanger for heating air for preventing generation of white smoke, and for exhausting the gases into the atmosphere through a dust collector of a bag-filter, the said method comprising the steps of:
- controlling a temperature of the gases right after the first heat exchanger within a range of 350.degree. C..about.300.degree. C., by means of the first heat exchanger,
- controlling a temperature of the gases right after the second heat exchanger within a range of 200.degree. C..about.140.degree. C., by means of the second heat exchanger, and
- controlling a pressure loss of the gases right after the first heat exchanger within a range of -20 mmH.sub.2 O.about.-60 mmH.sub.2 O.
In a method of removing dioxins in a waste incineration plant for cooling combustion gases from an incinerator by means of a steam boiler as a first heat exchanger, and for exhausting the gases into the atmosphere through a dust collector of a bag-filter, the said method comprising the steps of:
- controlling a temperature of the gases right after the first heat exchanger within a range of 200.degree. C..about.140.degree. C., by means of the first heat exchanger, and
- controlling a pressure loss of the gases right after the first heat exchanger within a range of -20 mmH.sub.2 O.about.-60 mmH.sub.2 O.
Dependencies are inferred from the claim text.