Method of preheating hydrocarbons for thermal cracking
US4361478A · kind A · utility
84Cited by
5References
3Claims
0Family size
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Key dates
| Filing date | Dec 13, 1979 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | Dec 13, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D2021/0059
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cracking furnace has a radiant heating zone provided with fuel-fired burners and through which a preheated feedstock is passed, combustion gases from the radiant heating zone passing into a convection zone before being discharged from said furnace. The convection zone is provided with heat-exchanger means for preheating said feedstock. The heat-exchanger means in the convection zone is subdivided into a plurality of functionally separated heat-exchanger bundles and the feedstock is passed selectively through the bundles in accordance with the composition of the feedstock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.