초록 ▼

A process and apparatus for combustion in which a combustible material is introduced into a combustion chamber and oxidant is supplied to the combustion chamber. The combustible material is burned, and forming a primary combustion zone. A mixture of flue gases and flyash having an organic content is

A process and apparatus for combustion in which a combustible material is introduced into a combustion chamber and oxidant is supplied to the combustion chamber. The combustible material is burned, and forming a primary combustion zone. A mixture of flue gases and flyash having an organic content is injected into the combustion chamber downstream of the primary combustion zone to create an oxygen-deficient reburn zone, thereby lowering the temperature of combustion, reducing the NO.sub.x content of the flue gases, and reducing the potential for NO.sub.x formation in a tertiary oxidizing combustion zone disposed downstream of the oxygen-deficient reburn zone.

대표청구항 ▼

[ We claim:] [1.] A process for combustion comprising the steps of:introducing a combustible material into a material combustion zone within a combustion chamber;supplying oxidant to the material combustion zone, combusting the combustible material and forming a primary combustion zone;injecting a m

[ We claim:] [1.] A process for combustion comprising the steps of:introducing a combustible material into a material combustion zone within a combustion chamber;supplying oxidant to the material combustion zone, combusting the combustible material and forming a primary combustion zone;injecting a mixture of flyash having a particle size of about 93% minus 20 mesh to plus 100 mesh and having an organic content and of at least one carrier fluid into said combustion chamber to create an oxygen-deficient reburn zone downstream of said primary combustion zone; andinjecting an oxygen-containing gaseous fluid into said combustion chamber downstream of said oxygen-deficient reburn zone, forming a tertiary oxidizing combustion zone downstream of said oxygen-deficient reburning zone.