초록 ▼

The present invention is directed to drying and heating processes and to an apparatus incorporating a pulse combustion device that can be used in a drying system or in a heating system. In general, the apparatus includes a pulse combustion device for the combustion of a fuel to produce a pulsating f

The present invention is directed to drying and heating processes and to an apparatus incorporating a pulse combustion device that can be used in a drying system or in a heating system. In general, the apparatus includes a pulse combustion device for the combustion of a fuel to produce a pulsating flow of combustion products and an acoustic pressure wave. The pulse combustion device has a combustion chamber connected to at least one resonance tube. A resonance chamber surrounds at least a portion of the pulse combustion device and includes a nozzle downstream from the resonance tube. The nozzle accelerates the combustion products flowing therethrough and creates a pulsating velocity head. In a drying system, the nozzle exits into a drying chamber where the combustion products contact a feed stream. When used in a heating system, on the other hand, the nozzle exits into an eductor which mixes the combustion products with a recycled stream of combustion products for forming an effluent that is fed to a heat exchanging device.

대표청구항 ▼

A process for drying a stream of materials containing solid particles, said process comprising the steps of: generating a pulsating flow of combustion products and an acoustic pressure wave; accelerating said pulsating flow of combustion products to create a high velocity pulsating flow field; conta

A process for drying a stream of materials containing solid particles, said process comprising the steps of: generating a pulsating flow of combustion products and an acoustic pressure wave; accelerating said pulsating flow of combustion products to create a high velocity pulsating flow field; contacting said high velocity pulsating flow field of said combustion products with a fluid containing solid particles, said high velocity pulsating flow field causing said fluid to atomize and to mix with said combustion products, said combustion products transferring heat to said atomized fluid for drying said solid particles contained therein.