A method for cleaning a plurality of heat exchange surfaces; said method comprising: programming of an impulse wave cycle into a configurable controller in communication with a distribution network; transmitting an impulse wave through said distribution network to an outlet; measuring a plurality of pressures at a first location by a pressure sensor at said outlet; comparing at least one of said plurality of pressures from said measuring step with a programmed threshold pressure at said configurable controller; determining that one of said plurality of pressures corresponds to said programmed threshold pressure; completing impulse wave generation at said first location in accordance with said determining step; and moving said distribution network to a second location in response to said measured pressure corresponding to said threshold pressure.

A method for cleaning a plurality of heat exchange surfaces; said method comprising: programming of an impulse wave cycle into a configurable controller in communication with a distribution network; transmitting an impulse wave through said distribution network to an outlet; measuring a plurality of pressures at a first location by a pressure sensor at said outlet; comparing at least one of said plurality of pressures from said measuring step with a programmed threshold pressure at said configurable controller; determining that one of said plurality of pressures corresponds to said programmed threshold pressure; completing impulse wave generation at said first location in accordance with said determining step; and moving said distribution network to a second location in response to said measured pressure corresponding to said threshold pressure.

An air preheater for a solid fuel-fired power plant includes a housing, a regenerative heating element received in the housing and adapted to transfer heat from the flue gas stream to the air stream, a plurality of flow control valves upstream of the regenerative heating element and a controller adapted to selectively open and close each valve of the plurality of flow control valves in order to provide an air flow shadow extending downstream over a selected portion of the regenerative heating element whereby ammonium bisulfate previously deposited on the selected portion is decomposed to loose dry ash. A method of decomposing and removing ammonium bisulfate from a regenerative heating element is also presented.

An air preheater for a solid fuel-fired power plant includes a housing, a regenerative heating element received in the housing and adapted to transfer heat from the flue gas stream to the air stream, a plurality of flow control valves upstream of the regenerative heating element and a controller adapted to selectively open and close each valve of the plurality of flow control valves in order to provide an air flow shadow extending downstream over a selected portion of the regenerative heating element whereby ammonium bisulfate previously deposited on the selected portion is decomposed to loose dry ash. A method of decomposing and removing ammonium bisulfate from a regenerative heating element is also presented.

The present invention provides an improved system and method for cleaning a plurality of semi-permeable heat exchange surfaces using an impulse wave which is transmitted by a distribution network and moved around the heat exchange surfaces by a navigational network.

The present invention provides an improved system and method for cleaning a plurality of semi-permeable heat exchange surfaces using an impulse wave which is transmitted by a distribution network and moved around the heat exchange surfaces by a navigational network.

The present invention is directed to an improved mobile combustion cleaning system for removing debris from a plurality of semi-permeable heat exchange surfaces with a moveable distribution network configured for receipt of a combustion mixture from a mobile cart according to a configurable controller the configurable controller generating the impulse wave from the combustion mixture and for moving the moveable distribution network along a plurality of axes in response to a change in pressure.

The present invention is directed to an improved mobile combustion cleaning system for removing debris from a plurality of semi-permeable heat exchange surfaces with a moveable distribution network configured for receipt of a combustion mixture from a mobile cart according to a configurable controller the configurable controller generating the impulse wave from the combustion mixture and for moving the moveable distribution network along a plurality of axes in response to a change in pressure.

The present invention concerns a method of weakening and removal of coke or carbonaceous material which deposits as a result of thermal cracking of hydrocarbons on the inner walls of coils, piping, tubing, and in general, hydrocarbon processing equipment.

The present invention provides an improved system and method for cleaning a plurality of semi-permeable heat exchange surfaces using an impulse wave which is transmitted by a distribution network and moved around the heat exchange surfaces by a navigational network.