Lime sludge kiln

Details Lime sludge kiln Lime sludge kiln

1990-06-18

1991-02-19

Yuen, Henry C.

Heating

Processes of heating or heater operation

Including passing, treating or conveying gas into or through...

432105, 432110, 432118, F27B 1500

Patent

active

049939424

ABSTRACT:
A kiln for reclaiming quick lime for calcium carbonate sludge formed in the production of cooking liquors in a wood pulping process for the production of paper. The kiln provides increased output with lower energy input due to: measurement and control of oxygen content in the kiln; non-air mixing burner; castable refractory liner with tumbler ribs; a heat transferring chain system; and a variable speed exhaust fan and air flow control. The output of the kiln was increased by more than ten percent along with a forty-five percent improvement in energy efficiency at substantial cost reduction due to its efficient use of energy.

REFERENCES:
patent: 1857785 (1932-05-01), Holzapfel
patent: 3294384 (1966-12-01), Hollefriend
patent: 4137029 (1979-01-01), Brooks
patent: 4462793 (1984-07-01), Maeda et al.
patent: 4934931 (1990-06-01), Angelo, II

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