Cracking processes Dubbs

Jenkins An early liquid-phase thermal cracking process. See also Dubbs. 

Cracking gas was briefly described in Vol 3 of Encycl, p C552-L, while cracking processes, such as of Dubbs and of Houdry are described in Ref 4, pp 429—31. See also Ref 9, p 528-R... 

Dubbs cracking an older continuous, liquid-phase thermal cracking process formerly used. 

Morgan, S.W.K., Zinc and Its Alloys and Compounds, Ellis Horwood, Chichester, UK, 1985, 117. Jenkins An early liquid-phase thermal cracking process. See also Dubbs. 

Figure 2. The Dubbs thermal cracking process (Adapted with permission from Oil and Gas Journal, January 8, 1990. Copyright 1990 Oil and Gas Journal.)...

The Dubbs process (5) was a continuous thermal cracking process in which a relatively clean feedstock was cracked in furnace tubes with the continuous removal of heavy cracked residue from the system. This process was patented (1,049,667) in 1913. 

Gulf Oil builds the world s first drive-in filling station in Pittsburgh, Peimsylvania. 1919 UOP commercializes the Dubbs thermal cracking process. 

By the early 1930s, thermal cracking had achieved a fairly high level of operation. Both the Dubbs (UOP) and Tube-and-Tank (Jersey Standard) Processes represented the state of the art in the field. Between the end of World War I, when the Burton Process was still revolutionary, and the early 1930s, octane ratings of gasoline increased 36 percent. This improvement resulted from the existence of more advanced thermal plants and the increasing use of additives, espe-... 

Burton The first commercial process for thermally cracking heavy petroleum fractions to obtain gasoline. Invented in 1912 by W. M. Burton at Standard Oil (Indiana) and operated commercially from 1913 through the 1920s. See also Dubbs. 

Thermal cracking or pyrolysis, the oldest of the these processes,1 was first carried out by Burton2 in his treatment of the residue remaining from the distillation of volatile components (so-called straight-run gasoline) of oil. The residue was treated in a horizontal drum by heating to 450-550°C under 5-6 atm. The volatile components were distilled off continuously until only coke remained in the still. The Burton process was supplanted by the continuous Dubbs process Operating... 

---