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The Babcock & Wilcox Company

Paul James Lieb

Dennis W Johnson

Norman D Nelson

Edward J Piaskowski

Robert B Myers

David W Murphy

David R Burley

Ronald L Goode

John F Sulek

A float device which provides an on-demand change in tacking or planing direction without having to retrieve the float or adjust the float configuration. The float utilizes a float body and at least two longitudinal keel members oppositely disposed on the float body. In a first orientation, the first keel is submerged and the second keel is in the air and the float tacks in the first keel direction. A sharp pull on a tether line connected to the float causes the float body to roll 180 degrees such that second keel is submerged and the first keel is in the air and the float tacks in the second keel direction.

Planing float with lateral motion control

A method of reducing the pressure drop in a downflow/upflow wet flue gas desulfurization (WFGD) system and of improving overall sulfur dioxide collection efficiency by converting the downflow/upflow WFGD system to an upflow single-loop WFGD system. The method includes the replacing of the downflow quencher and related duct work with a bypass for connecting the incoming flue gas duct with the upflow absorber, and the adding of a quenching zone in the absorber comprised of spray headers.

Method of converting a downflow/upflow wet flue gas desulfurization (WFGD) system to an upflow single-loop WFGD system

A modified air heater gas inlet plenum for a tubular air heater which permits retrofit installation of additional flue gas environmental treatment equipment. A divider plate is located within the inlet plenum to subdivide it into first and second flue gas passages. The first flue gas passage created by the divider plate merely conveys the hot flue gas through the inlet plenum and into flues which convey the flue gas to the new equipment. Return flues convey the flue gas back to the second flue gas passage created in the inlet plenum which, in turn, conveys the flue gas into the tubular air heater heat exchanger tubes. By taking advantage of the large size of a conventional air heater gas inlet plenum, the first and second flue gas passages created by the divider plate still have sufficient cross sectional area so that acceptable flue gas velocities are preserved. One particular application of the modified air heater gas inlet plenum is to permit retrofit application of selective catalytic reduction (SCR) systems for treating flue gas to existing steam generators or boilers.

Air heater gas inlet plenum

This invention pertains to a single spray level within a flue gas desulfurization absorber tower. This spray level incorporates multiple headers with each header having a plurality of feeder lines connected thereto. These feeder lines extend within the flue gas flow path in an alternating and staggered configuration within the same plane. A series of nozzles are secured to each feeder line to spray a mixture onto the flue gas. Spare capacity, if required, is incorporated into the spray level.

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Norton, OH, United States of America

Paul James Lieb