초록 ▼

A process and apparatus for drying of materials such as wood chips or lacquers. A stream of hot gas is provided, the hot gas passes over the material to be dried, the now waste gas is removed from the material to be dried, the volatile substances are deposited from the waste gas and the deposited su

A process and apparatus for drying of materials such as wood chips or lacquers. A stream of hot gas is provided, the hot gas passes over the material to be dried, the now waste gas is removed from the material to be dried, the volatile substances are deposited from the waste gas and the deposited substances are moved to a collector location. Dust and similar materials can be also bonded during the depositing step. The deposited volatile substances can be removed by intermittent evaporation and/or sublimation and the volatile substances can be collected at a predetermined collector location, or by continuously washing out the volatile substances, or by compressing before cooling down and expanding after cooling down the volatile substances. Removing of deposited volatile substances may be triggered in response to a certain degree of dirtying or soiling and to passing predetermined threshold values of temperature and/or pressure and in accordance with a predetermined time plan, respectively.

대표청구항 ▼

An apparatus for separation of carried combustible and/or condensable and/or precipitable substances from the waste gas of drying installations comprising a drying chamber; a supply line to the drying chamber for feeding material to be dried; an offtake line connected to the drying chamber for remov

An apparatus for separation of carried combustible and/or condensable and/or precipitable substances from the waste gas of drying installations comprising a drying chamber; a supply line to the drying chamber for feeding material to be dried; an offtake line connected to the drying chamber for removing dried stock; an input line to said drying chamber for feeding in hot air; a waste has output line connectedd to said drying chamber for removing waste gas; a first heat exchanger connected to the waste gas output line and having a waste gas outlet; an inlet and an outlet for exchange fluid; said first heat exchanger providing for cooling of the hot waste gas coming from the drying chamber to a temperature sufficient for depositing volatile substances; heating means for evaporating and/or subliming the deposited volatile substances; and switching means to allow for alternately turning on the exchange fluid for cooling of the waste gas or the heating means.