Houdriflow process

The gas-lift technique was adopted in two commercial processes the Houdriflow process, developed by Houdry Process Corporation (86), and the Air-Lift TCC process, developed by the Soeony-Vacuum Oil Company (107,333). 

Houdriflow process. A moving-bed type of catalytic cracking in which the catalyst pellets move downward through a reactor concurrently with the feed. The catalyst is then separated and regenerated for further use. 

In the T.C.C. and Houdriflow processes, reduced or topped crude oil is heated to 780 to 860 F vaporizing material boiling up to about 850°F as a vapor feed. Three major means of obtaining additional charge stock from the residual feed have been used (see Fig. 21-7) ... 

Thermofor (T.C.C.) and Houdriflow Processes. These processes " during earty stages were developed jointly by the Socony Mobil Oil Company and the Houdry Process Corporation. In many respects... 

Houdresid A catalytic petroleum cracking process, similar to Houdriflow, adapted to processing residues. 

Houdriflow A catalytic petroleum cracking process in which the beads of catalyst move continuously through the reactor and the catalyst regenerator. 

Houdriflow catalytic cracking a continuous moving-bed catalytic cracking process employing an integrated single vessel for the reactor and regenerator kiln. 

Fig. 24. Houdriflow unit. (Courtesy of Houdry Process Corporation.)...

The Houdry, TCC, Houdriflow, and Cycloversion processes use catalysts in the form of particles several millimeters in diameter. The fluid process employs catalyst in the form of fine particles smaller than grains of sand. 

The first step in the direction of a continuous process utilized buckets and conveyers to transfer spent catalyst from the reactor to a Thermofor kiln. The Thermofor kiln was in use at that time for burning coke off the Fullers earth used in the filtration of lube oils. The idea of transferring catalyst between a reaction and regeneration zone led to the eventual development of the early bucket elevator TCC, the Houdriflow, the airlift TCC, and eventually the Fluid Catalytic Cracking unit. 

NoU et al.. The Houdriflow Catalytic Process Today, Proe. Fourth World Pek Congr., sec. Ill, Borne, 1955. 

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