Patent ID: 11878950
Assignee: THYSSENKRUPP INDUSTRIAL SOLUTIONS AG
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 9:
10. A plant for producing cement clinker, comprising:
a preheater,
a calciner,
a rotary furnace, and
a clinker cooler,
wherein the plant has, at a section of the cooler directly adjoining a top of the rotary furnace, a device for feeding gas from the cooler to the rotary furnace, the device configured to feed a gas having a proportion of 15% by volume or less of nitrogen and a proportion of 50% by volume or more of oxygen such that there is an excess of oxygen at a main burner and residual amounts of oxygen are conveyed into the calciner,
wherein the plant is configured for feeding gas streams which in total consist to an extent of more than 75% by volume of oxygen to the cooler,
wherein at least one of:
the plant is free of a tertiary air supply to the calciner, or
the plant is free of means separate from the rotary furnace for supplying enriched oxygen to the calciner.