Process for catalytic upgrading light petroleum hydrocarbons accompanied by low temperature regenerating the catalyst

A process for catalytically upgrading light petroleum hydrocarbons accompanied by low temperature regenerating the catalyst, characterized in that:

• a) introducing the light petroleum hydrocarbons and the regenerated catalyst into a reactor to form a mixture of the feedstock and the catalyst;
• b) catalytically converting the light petroleum hydrocarbon under the conditions of a temperature 200 to 450° C. a pressure of 0.1 -0.5 Mpa, a catalyst-oil ratio of 2 to 15 and a reaction time of 1 to 20 second to form a mixture of the resultant including gasoline, diesel oil and liquefied gas, and the spent catalyst;
• c) separating the resultant and the spent catalyst;
• d) stripping the spent catalyst;
• e) regenerating the stripped spent catalyst for 10 to 50 minutes under a temperature of 400 to 600° C. and a pressure of 0.1 to 0.6 Mpa;
• f) feeding the regenerated catalyst back to the reactor for reuse through circulation.