Method for thermal cracking of hydrocarbons in an apparatus of an alloy having alkali or alkaline earth metals in the alloy to minimize coke deposition
US4454021A · kind A · utility
11Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1981 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Dec 17, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In the thermal cracking of or heating of hydrocarbons, for example naphtha, a carbonization reaction incidentally takes place due to the fact that Ni, Fe and Co contained in, for example, the conduits of the thermal cracking apparatus have a catalytically carbonizing action. The aim of the present invention is to effectively suppress carbon deposition promoted by these elements, to provide for the incorporation of an inhibitor element, e.g. Li, Na, Ba, Be, Ca, Mg or their oxides, into the heat-resistant alloy, and to form on the surface of this alloy a carbon deposition suppressing layer which comprises an inhibitor element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.