Combustion system and operation control method thereof
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsHidenori Koseki, Hiroaki Shigeoka
Life of this patent
Estimating the term…
Abstract
A combustion system is divided into a thermal decomposition section and a combustion section. The thermal decomposition section thermally decomposes or partially bums solid combustibles, thereby generating combustible gases. The quantity or quality of the generated combustible gases is measured, and combustion air corresponding to the measured value is supplied to the combustion section. The quality and temperature of the combustible gases in the thermal decomposition section are detected, and the quantity of solid combustibles and air (or the quantity of heat) supplied to the thermal decomposition section are controlled.
Claims13
A combustion system comprising:
- solid combustibles supply means for supplying solid combustibles;
- a thermal decomposition section connected to said solid combustibles supply means for generating combustible gases by thermally decomposing or partially burning the solid combustibles which are received from said solid combustible supply means;
- a combustion section connected to said thermal decomposition section for receiving and burning the combustible gases generated by said thermal decomposition section;
- thermally-decomposed gas quality detection means for detecting a stoichiometric air-to-fuel ratio of the combustible gases generated by said thermal decomposition section;
- and
- air supply means for supplying air to said combustion section in accordance with the stoichiometric air-to-fuel ratio of the combustible gases detected by said thermally-decomposed gas quality detection means.
A method of controlling the operation of a combustion system comprising a thermal decomposition section for generating combustible gases by thermally decomposing or partially burning solid combustibles and a combustion section for receiving and burning the combustible gases generated by said thermal decomposition section, the method comprising the steps of:
- detecting a quantity of combustible gases generated by the thermal decomposition section;
- detecting a stoichiometric air-to-fuel ratio of the combustible gases generated by the thermal decomposition chamber;
- and
- supplying air to the combustion section based on the quantity of combustible gases and the stoichiometric air-to-fuel ratio.
A method of controlling the operation of combustion system comprising a thermal decomposition section for generating combustible gases by thermally decomposing or partially burning solid combustibles and a combustion section for receiving and burning the combustible gases generated by said thermal decomposition section, the method comprising the steps of:
- detecting a flow rate of air supplied to the thermal decomposition section;
- detecting a stoichiometric air-to-fuel ratio of the combustible gases developed in the thermal decomposition section;
- calculating a quantity of the combustible gases generated by the thermal decomposition section by multiplying the flow rate of air by a predetermined factor;
- and
- supplying air to the combustion section in accordance with the quantity of combustible gases and the stoichiometric air-to-fuel ratio.
A method of controlling the operation of a combustion system comprising a thermal decomposition section for generating combustible gases by thermally decomposing or partially burning solid combustibles and a combustion section for receiving and burning the combustible gases generated by said thermal decomposition section, the method comprising the steps of:
- detecting the temperature of the combustible gases developed in the thermal decomposition section;
- detecting a stoichiometric air-to-fuel ratio of the combustible gases developed in the thermal decomposition section;
- and
- changing at least one of a supply rate of the solid combustibles to the thermal decomposition section, a supply rate of air to the thermal decomposition section, and a heating rate of the thermal decomposition section, based on the detected temperature of the combustible gases and the stoichiometric air-to-fuel ratio of the combustible gases.
Dependencies are inferred from the claim text.