Patent · US Expired

Closed reactor FCC system with provisions for surge capacity

US4624772A · kind A · utility

20Cited by
8References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 8, 1985
Grant dateNov 25, 1986
Priority date—
Expiry dateNov 8, 2005

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10G11/18
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

A fluid catalytic cracking (FCC) apparatus and process comprising a reactor riser zone, a primary and a secondary cyclones, connected in series to the riser zone, and a stripping zone. The riser zone, the primary and the secondary cyclones, and the stripping zone, are placed within a single reactor vessel. The primary cyclone is connected to the reactor riser zone by an enclosed conduit which prevents random post-riser thermal cracking of the hydrocarbons after they exit the reactor riser zone. The conduit contains a trickle valve, or other means, to accommodate sudden increased surges of flow of the hydrocarbons and catalyst mixture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.