Impulse combustion cleaning system and method

a cleaning system and impulsive technology, applied in the direction of cleaning using liquids, combustion types, lighting and heating apparatuses, etc., can solve the problems of reducing the efficiency of the system, so as to achieve the effect of effective and reliable impulse cleaning system and removal of built-up deposits

Inactive Publication Date: 2009-05-14
BHA ALTAIR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Burning the fuel may generate residues that can be left behind on the surface of the combustor or heat exchanger.
Such buildups of soot, ash, slag, or dust on heat exchanger surfaces can inhibit the transfer of heat and therefore decrease the efficiency of the system.
These systems can be costly to maintain and the effectiveness of these systems varies.
This exposure can decrease the service life of the sensors.

Method used

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  • Impulse combustion cleaning system and method
  • Impulse combustion cleaning system and method
  • Impulse combustion cleaning system and method

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Embodiment Construction

[0014]Soot or other buildup on heat exchanger surfaces in industrial boilers can cause losses in the overall efficiency of the boiler due to a reduction in the amount of heat that is actually transferred into a working fluid. This is often reflected by an increase in the exhaust gas temperature from the process, as well as an increase in the fuel-burn rate required to maintain steam production and a given energy output. Traditionally, the complete removal of buildup from the heat exchanger surfaces requires the boiler to be shut down while a cleaning process is performed. Online cleaning techniques generally have high maintenance costs or incomplete cleaning results.

[0015]In one aspect of the invention, an impulse cleaning system located external to the boiler is used to generate a series of detonations or quasi-detonations that are directed into a fouled portion of the boiler. The resulting impulse waves impact boiler surfaces and loosen buildup from the surfaces. The loosened debr...

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Abstract

A system for removing accumulated debris from a surface of a vessel. The system comprises a vessel having a surface to be cleaned. A impulse cleaning device defines a combustion chamber in which combustible fuel and air are mixed and ignited to produce supersonic combustion that is directed at the surface to be cleaned within the vessel. A sensor is associated with the impulse cleaning device. The sensor is for detecting a condition within the impulse cleaning device and generating a signal in response to a detected condition.

Description

BACKGROUND[0001]The invention relates generally to an impulse combustion cleaning system. More specifically, the invention relates to sensing a condition in the impulse combustion cleaning system.[0002]Industrial boilers operate by using a heat source to create steam from water or another working fluid, which can then be used to drive a turbine in order to supply power. The heat source may be a combustor that burns a fuel in order to generate heat, which is then transferred into the working fluid via a heat exchanger. Burning the fuel may generate residues that can be left behind on the surface of the combustor or heat exchanger. Such buildups of soot, ash, slag, or dust on heat exchanger surfaces can inhibit the transfer of heat and therefore decrease the efficiency of the system. Periodic removal of such built-up deposits maintains the efficiency of such boiler systems.[0003]Pressurized steam, water jets, acoustic waves, and mechanical hammering have been used to remove built-up d...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F23G5/00F23N5/00
CPCF23C15/00F23D99/003F23J3/023F28G7/005F23N5/123F23N5/16F28G7/00F23N1/022F23D91/02
Inventor CHAPIN, DAVID M.DEAN, ANTHONY J.BULTMAN, MICHAEL J.
Owner BHA ALTAIR
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