Catalytic cracking conversion method for increasing yield of gasoline and reducing oil slurry

Abstract

The invention relates to a catalytic cracking conversion method for increasing the yield of gasoline and reducin oil slurry. The invention mainly solves the problems of low gasoline yield and complicated process in a conventional catalytic cracking process. The method provided by the invention comprises the following steps: introducing two regenerant delivery pipes from a regenerator to respectively deliver a regenerated catalyst to a light hydrocarbon reaction zone I and a heavy hydrocarbon reaction zone in the reaction zone of a lift pipe reactor, and allowing preheated light hydrocarbons and heavy hydrocarbons to be simultaneously and respectively sprayed into the light hydrocarbon reaction zone I and the heavy hydrocarbon reaction zone from an integrated spray nozzle to contact and react with a high-temperature regenerated catalyst from the regenerator and an upwardly-moving carbon deposit catalyst from the light hydrocarbon reaction zone I, allowing a reaction product and the carbon deposit-containing catalyst to flow out of the reactor from the outlet of the top part of the reactor and to enter a cyclone separation system for separation, and allowing a separated reaction product to enter a fractionating tower through an oil and gas pipeline for fractional distillation so as to obtain a corresponding product. The catalytic conversion method provided by the invention has the characteristics of increasing the yield of the gasoline and reducing the oil slurry.

Description

technical field [0001] The invention relates to a hydrocarbon catalytic cracking conversion method, more specifically, relates to a catalytic cracking conversion method of heavy diesel oil and low-quality heavy oil that increases gasoline production and reduces oil slurry in the absence of hydrogen. Background technique [0002] Under the new economic normal, China's main refined oil consumption is still on the rise. The rigid demand for gasoline has grown rapidly, while the growth rate of diesel demand has dropped sharply. Before 2020, the growth rate of my country's gasoline demand will generally be faster than that of diesel. In the face of rapid changes in the domestic market, in order to use oil resources more efficiently and meet the demand for more gasoline in the market, the refinery research and development institutions have actively developed new technologies to increase gasoline production and reduce oil slurry in recent years, so as to play a role for refiners to ...

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Problems solved by technology

The patent uses two riser reactors, the embedded riser uses mixed C4, FCC light gasoline, light naphtha, and light diesel oil as raw materials, and the outer embedded riser uses Daqing mixed oil or Daqing vacuum residue as raw materials , the gasoline yield is low, and the process is relatively complicated, making it difficult to implement

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