US 2022/0235933 A1

Method and apparatus for treating combustible substance

(22) 06.08.2019

(43) 28.07.2022

(57) A treatment method and apparatus is provided to effectively use a combustible waste such as waste plastic, waste tires, rice husk, wood shavings, PKS, RDF and sludge while maintaining stable
operation; to improve the combustion
efficiency of a fossil fuel such as coal and coke; and furthermore to reduce the NOx concentration in a cement kiln exhaust gas. An apparatus 1 for treating a combustible, the apparatus comprising:
a mixer 3 for mixing a combustible C with a preheated raw material R2, which has a temperature of 600 °C. or higher and 900 °C. or lower and which is drawn from a preheater cyclone of a cement burning device 10, to gasify the combustible; and a feeder 5 for feeding the gasified combustible and the preheated raw material (mixed raw material M) to a region from an inlet end 13a of the cement burning device to a calciner 12. When the combustible and the preheated raw material are mixed, moisture may be added to cause water gas shift reaction, and the resultant water gas and the preheated raw material may be introduced to the region from the inlet end of the cement burning device to the calciner.

(71) Taiheiyo Engineering Corporation, Tokyo (JP)


Related articles:

Issue 4/2022 EP 3 984 632 A1

Method and apparatus for producing desulfurizing agent, and method for removing sulfur dioxide from cement kiln exhaust gas

(22) 01.08.2019 (43) 20.04.2022 (57) [Problem] To provide a method and an apparatus for producing a desulfurizing agent in which good handleability is achieved; the water content is easily adjusted;...

Issue 7-8/2020 WO 2020/065787 A1

Burner apparatus for cement kiln and method for operating same

(22) 06.09.2019 (43) 02.04.2020 (57) Provided is a burner apparatus for a cement kiln, which strongly forms a floating state of combustible solid waste in the cement kiln, and easily ignites the...

Issue 1/2021 EP 3 738 939 A1

Method for calcining raw meal for cement clinker manufacturing

(22) 17.05.2019 (43) 18.11.2020 (57) Method for calcining limestone or raw meal containing limestone for manufacturing cement clinker, wherein microwave energy is used for calcination, device for...

Issue 4/2023 KR102512130 (B1)

Exhaust gas pollutant treatment device by withdrawal cement kiln circulating material and treatment method thereof

(22) 24.10.2022 (43) 22.03.2023 (57) Processing pollutants from flue gas with some of the circulated materials that adversely affect the firing process among the high-temperature combustion gas and...

Issue 3/2019 US 2018/0297037 A1

Method and apparatus for converting infectious waste material into material usable as fuel for a cement kiln

(22) 13.04.2017 (43) 18.10.2018 (57) An infectious waste treatment system and method for decontaminating infectious waste employ a thermal friction extruder (20) in which first and second interleaved...