Method for incinerating refuse, and a control process therefor
AssigneeNoell Abfall- und Energietechnik GmbH
InventorsGert Lautenschlager, Ulrich Kaiser, Robert Steiner, Erwin Wachter, Bernhard Fabian
Life of this patent
Estimating the term…
Abstract
In refuse incineration, it has been determined that the legal requirements governing refuse incineration can be more easily met by maintaining a uniform depth of charge on the grate. The charging of the refuse and the transport speed of the charge produced by movable refuse feeders can be regulated as a function of the quantity of refuse in the incinerator or in its individual zones. The load of the drive mechanism can be used for measurement and control purposes for maintaing a uniform refuse depth.
Claims17
A method for incinerating refuse in an incineration apparatus to minimize pollutants in the exhaust and minimizes ash produced during the incineration.sub.d the incineration apparatus comprising at least one zone therein for incinerating refuse, and means for substantially continuously feeding refuse through said at least one incineration zone.sub.d said method comprising the steps of:
- predetermining a substantially optimum quantity of refuse to be present in said at least one incineration zone for said incineration, said substantially optimum quantity being a quantity which minimizes ash and exhaust pollutants produced during said incineration;
- providing refuse to the incineration apparatus;
- substantially continuously charging an amount of refuse into said at least one incineration zone;
- substantially continuously feeding the refuse charge through said at least one incineration zone at a speed of refuse transport;
- measuring the quantity of refuse in said at least one incineration zone, said measuring of the quantity of refuse comprising measuring a load needed to drive said feeding means, said substantially optimum quantity of refuse corresponding to a predetermined range of load values;
- incinerating the refuse in the incineration apparatus to produce ash and exhaust gases;
- regulating at least one of:
- said charging of refuse into said at least one incineration zone, and
- said feeding speed through said at least one incineration zone as a function of the quantity of refuse measured in said at least one incineration zone;
- and
- maintaining said substantially optimum quantity of refuse in said at least one incineration zone by said regulating of at least one of:
- said charging and said feeding speed, to minimize ash and exhaust pollutants produced by said incineration.
A process for regulating a quantity of refuse or a depth of a refuse layer on at least a first incinerator grate of an incinerator for incinerating refuse, said incinerator comprising means for feeding refuse along said first incinerator grate, said process comprising:
- charging an amount of refuse onto said first incinerator grate;
- feeding the refuse charge along said first incinerator grate at a speed of refuse transport during said incineration;
- measuring the quantity of refuse on said first incinerator grate, said measuring of the quantity of refuse comprising a load needed to drive said feeding means;
- regulating at least one of:
- said charging of refuse onto said first incinerator grate, and
- said feeding speed along said first incinerator grate as a function of the quantity of refuse measured on said first incinerator grate;
- maintaining a substantially constant quantity of refuse on said first incinerator grate during said incineration by said regulating of at least one of:
- said charging of refuse onto said first incinerator grate and said feeding speed along said first incinerator grate to minimize ash and exhaust pollutants produced by said incineration;
- said substantially constant quantity of refuse corresponding to a range of load values for said feeding means;
- and
- said maintaining of said substantially constant quantity of refuse on said first incinerator grate comprises:
- upon the load falling below a minimum value of said range of load values, at least one of:
- increasing said charging;
- and
- decreasing said feeding speed to increase the quantity of refuse on said first incinerator grate;
- and
- upon the load rising above a maximum value of said range of load values, at least one of:
- decreasing said charging;
- and
- increasing said feeding speed to decrease the quantity of refuse in said at least one incineration zone.
Dependencies are inferred from the claim text.