METHOD AND APPARATUS FOR PRODUCING PROPENE AND C4 HYDROCARBONS Russian patent published in 2020 - IPC C07C1/20 C07C11/06 C07C4/06 C07C9/10 B01J38/30 

FIELD: chemistry.

SUBSTANCE: disclosed is an apparatus for producing propylene and C4 hydrocarbons from oxygen-containing compounds selected from methanol and dimethyl ether, comprising a fast fluidised bed reactor comprising a reactor shell, n reactor feed distributors, gaseous and solid phase reactor separator 1, gaseous and solid phase reactor separator 2, reactor heat exchanger, gaseous product outlet and reactor stripping column, wherein the lower part of the fast reactor with the fluidised bed is a dense phase zone, the upper part of the fast reactor with the fluidised bed is a diluted phase area, n reactor feed distributors are located in the dense phase zone, the reactor heat exchanger is located inside or outside the reactor shell, the gaseous and solid phases reactor separator 1 and the gaseous and solid phases reactor separator 2 are located outside the reactor shell, inlet of reactor separator 1 of gaseous and solid phases is connected to lifting pipe for regenerated catalyst, outlet hole for catalyst of gaseous and solid phase reactor separator 1 is located in lower part of dense phase zone, outlet hole for gas of reactor separator 1 of gaseous and solid phases is located in zone of diluted phase, inlet of reactor separator 2 of gaseous and solid phases is located in zone of diluted phase, outlet for catalyst of catalyst separator 2 of gaseous and solid phases is arranged in area of dense phase, outlet hole for gas of reactor separator 2 of gaseous and solid phases is connected to outlet hole for gaseous product, and the reactor stripping column passes through the reactor shell from the outside to the inside in the lower part of the fast reactor with the fluidised bed and opens in the zone of the dense phase of the fast reactor with the fluidised bed, the riser pipe for catalytic cracking, wherein lower part of lifting pipe for catalytic cracking is connected to outlet hole of inclined pipe for catalytic cracking and is equipped with inlet hole for hydrocarbons with five or more carbon atoms, and outlet hole of lifting pipe for catalytic cracking is connected to zone of diluted phase of fast reactor with fluidised bed, regenerator with fluidised bed, containing regenerator casing, distributor of regenerator material, separator of gaseous and solid phases of regenerator, heat exchanger of regenerator, outlet hole for waste gas and regenerator stripping column, wherein the lower part of the regenerator with the fluidised bed is a regeneration zone, the upper part of the regenerator with the fluidised bed is a deposition zone, regenerator material distributor is arranged in the regeneration zone lower part, the regenerator heat exchanger is located in the regeneration zone, the regenerator gaseous and solid phases separator is placed in the deposition zone or outside the regenerator casing, inlet hole of separator of gaseous and solid phases of regenerator is located in deposition zone, outlet hole for catalyst of separator of gaseous and solid phases of regenerator is located in regeneration zone, outlet hole for gas of separator of gaseous and solid phases of regenerator is connected to outlet hole for exhaust gas, and regenerator stripper opens in regenerator casing lower part, wherein the lower part of the reactor stripping column is equipped with an outlet port of the stripping gas reactor, the lower part of the reactor stripping column is connected to the inlet of the inclined pipe for the spent catalyst, the sliding valve for the spent catalyst is located in the inclined pipe for the spent catalyst, outlet hole of inclined pipe for spent catalyst is connected to inlet hole of lifting pipe for spent catalyst, lower part of lifting pipe for spent catalyst is equipped with inlet hole for carrying gas for spent catalyst, and outlet hole of lifting pipe for spent catalyst is connected to zone of deposition of regenerator with fluidised bed, lower part of regenerator stripping column is equipped with inlet of regenerator for stripping gas, lower part of regenerator stripper is connected to inlet of inclined pipe for regenerated catalyst, sliding valve for regenerated catalyst is located in inclined pipe for regenerated catalyst, outlet of inclined pipe for regenerated catalyst is connected to inlet opening of lifting pipe for regenerated catalyst, lower part of lifting pipe for regenerated catalyst is equipped with inlet hole for carrying gas for regenerated catalyst, and outlet hole of lifting pipe for regenerated catalyst is connected to inlet of reactor separator 1 of gaseous and solid phases, lower part of regenerator stripper is further connected to inlet of inclined pipe for catalytic cracking, and sliding valve for catalytic cracking is located in inclined pipe for catalytic cracking, wherein n reactor feed distributors are located in the dense phase zone from bottom to top and 0 < n < 10, and the catalyst contains SAPO molecular sieve. Also disclosed is a method of producing propylene and C4 hydrocarbons from oxygen-containing compounds selected from methanol and dimethyl ether, carried out in the device described above.

EFFECT: technical result is high selectivity of propylene and C4 hydrocarbons, as well as high rate of alkylation reaction of ethylene during production of propylene and C4 hydrocarbons from methanol, thereby increasing production capacity of reaction per unit volume.

12 cl, 1 dwg, 5 ex