FIELD: energy.
SUBSTANCE: invention relates to power engineering. Method of combustion of a hydrocarbon feedstock with solid particles in chemical loop in which circulates an oxygen carrier material in particulate form, said method comprising at least contact of solid filler particles with oxygen carrier material particles in a first R1 reaction zone operating in dense fluidised bed; combustion waste gas from first R1 reaction zone in presence of oxygen carrier material particles in second reaction zone R2; separation of solid filler particles unburnt, fly ash and oxygen carrier material particles in a mixture resulting from R2 zone, in a rapid separation zone S3 to carry with flue gases (13) most of unburned solid filler particles and fly ash and send most of oxygen carrier material particles to an oxidation zone R0; gas dedusting (13) from quick separation zone S3 in S4 flue gas dedusting zone for discharging dedusted gas stream (14) and flow of particles (15) comprising ash and formed dense particles predominantly oxygen carrier solid particles and unburned particulate filler; division of particle stream (15) separated in dedusting step S4 into two streams in a division area D7 flows, one being recycled to first R1 reaction zone operating in dense fluidised bed, and other sent to a separation zone by elutriation S5; separation by elutriation in said area S5 to recover and recycle ash dense particles to R1 first reaction zone.
EFFECT: invention provides complete combustion of solid filler, reduces emission of hazardous substances.
16 cl, 1 tbl, 3 dwg
