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Primary Examiner: Sofer, Jack
Assistant Examiner:
Attorney: Howson and Howson

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Title: Vertical tube type cracking furnace

Abstract: Vertical tube type cracking furnace in which a convection-heating section for preheating the process fluid is provided above the combustion chamber, and gas passages connecting the convection-heating section and the combustion chamber are symmetrically provided.

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Inventors: Nakase, Noriaki (Nagano, JA)
Nagamine, Yoshiaki (Osaka, JA)

Application Number: 451924
Filing Date: 1974-03-18
Publication_date: 1976-03-30
Assignee: Mitsui Shipbuilding & Engineering Co. Ltd. (Tokyo, JA)
Primary Class(es): 196/110 196/116
Other Classes:
US Patent Ref:

2598840	Jun, 1952	Schutte	196/110.
2964033	Dec, 1960	Throckmorton et al.	122/356.
3172739	Mar, 1965	Koniewiez	23/288.
3215502	Nov, 1965	Korwin	196/110.
3274978	Sep, 1966	Palchik et al.	122/356.
3361538	Jan, 1968	Hess	196/110.
3385269	May, 1968	Breckenridge	122/356.
3512506	May, 1970	Von Wiesenthal	122/356.

Other Refs: Other References: Heat Engineering, "Simplifed Vertical Heater", May-June 1949, Vol. XXIV, No. 3, pp. 45-47.