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

FIELD: chemistry.

SUBSTANCE: disclosed is a device for producing propylene and C4 hydrocarbons from oxygen-containing compounds selected from methanol and dimethyl ether, containing: reactor with a turbulent fluidised bed, comprising a reactor shell, n reactor feed distributors, a gaseous and solid phase reactor separator 1, a gaseous and solid phase reactor separator 2, a reactor heat exchanger, an outlet hole for the gaseous product and a reactor stripping column, wherein the lower part of the reactor with the turbulent fluidised bed is a reaction zone, the upper part of the reactor with the turbulent fluidised bed is a deposition zone, n reactor feed distributors are located in the reaction zone, the reactor heat exchanger is located in the reaction zone, the gaseous and solid phases reactor separator 1 and the gaseous and solid phases reactor separator 2 are located in the deposition zone or 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 reactor separator 1 of gaseous and solid phases is located in lower part of reaction zone, outlet hole for gas of reactor separator 1 of gaseous and solid phases is located in settling zone, inlet of reactor separator 2 of gaseous and solid phases is located in zone of deposition, outlet for catalyst of catalyst separator 2 of gaseous and solid phases is placed in reaction zone, 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 reactor with the turbulent fluidised bed and opens in the reaction zone of the reactor with the turbulent fluidised bed; catalytic cracking lifting pipe, 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 5 or more carbon atoms, and outlet hole of lifting pipe for catalytic cracking is connected to reactor settling zone with turbulent fluidised bed; regenerator with a fluidised bed, comprising regenerator casing, regenerator material distributor, separator of gaseous and solid phases of regenerator, heat exchanger of regenerator, outlet hole for waste gas and regenerator column, at that, lower part of regenerator with fluidised bed is zone of regeneration, upper part of regenerator with 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 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 stripping column opens in lower part of regenerator casing; wherein lower part of reactor stripping column is equipped with outlet of stripping gas reactor, lower part of reactor stripping column is connected to inlet hole of inclined pipe for spent catalyst, sliding valve for spent catalyst is located in inclined pipe for 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 section of deposition of regenerator with fluidised bed; lower part of the regenerator stripping column is equipped with an outlet of the regenerator for the stripping gas, the lower part of the regenerator stripping column is connected to the inlet of the inclined pipe for the regenerated catalyst, sliding valve for the regenerated catalyst is located in the inclined pipe for the regenerated catalyst, the outlet hole of the inclined pipe for the regenerated catalyst is connected to the inlet opening of the lifting pipe for the 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 hole 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 the catalyst contains SAPO molecular sieve, and n reactor feed distributors are located in the reaction zone from bottom to top, and 0 < n < 10. 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: 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