초록 ▼

A method of treating process gases by cooling the process gas in the reactor so as to bring the process gas into contact with fluidized solid particles which are separated from the process gas after treating and mainly recirculated back to the reactor, in which method the process gas to be treated i

A method of treating process gases by cooling the process gas in the reactor so as to bring the process gas into contact with fluidized solid particles which are separated from the process gas after treating and mainly recirculated back to the reactor, in which method the process gas to be treated is mixed either simultaneously or at a short interval with both recirculated solid particles and gas, which gas, at least partly, is process gas which has been treated and from which solid particles have been separated after treatment, and in which method at least one of the components, i.e. solid particles or gas, to be mixed with the treated gas is cooler than the process gas to be treated. An apparatus for treating process gases by cooling the process gas in the presence of solid particles, which apparatus comprises a vertical reactor, at the bottom of which there is an inlet opening for the process gas, and in which apparatus a mixing chamber is fitted to the reactor, said mixing chamber having a conical bottom tapering downwards with at least one inlet opening disposed low at the conical bottom or in the immediate vicinity thereof, which opening is intended for a gas to be mixed with the process gas or for an evaporating liquid and in which apparatus at least one inlet pipe for solid particles is fitted to the wall or conical bottom of the mixing chamber.

대표청구항 ▼

A method of treating a process gas by cooling the process gas in a reactor, comprising: introducing the process gas to be treated into a mixing chamber in the reactor through an opening in the lowermost end of the mixing chamber for fluidizing solid particles in the mixing chamber and for bringing t

A method of treating a process gas by cooling the process gas in a reactor, comprising: introducing the process gas to be treated into a mixing chamber in the reactor through an opening in the lowermost end of the mixing chamber for fluidizing solid particles in the mixing chamber and for bringing the process gas into contact with the fluidized solid particles in a mixing stage; separating solid particles from the process gas in one or more separators in at least one separation stage following treatment in the mixing chamber; and recirculating the separated solid particles into the process gas in the mixing chamber; wherein the process gas is cooled prior to the separation stage; and further wherein the process gas to be treated is mixed in the mixing chamber at a mixing temperature with, in addition to the separated solid particles, process gas which has been treated in the reactor and from which solid particles have been separated after the treatment and/or a fluid condensed from the process gas after the treatment of the gas, which fluid revolatilizes at the mixing temperature and wherein the process gas to be treated and/or the treated process gas and/or the revolatilized fluid act as sole fluidizing gas for the solid particles in the fluidized bed.