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1.发明授权公开(公告)号：US11542440B2
公开(公告)日：2023-01-03
申请号：US16888390
申请日：2020-05-29
发明人： Bruce Indurain Y Urricelqui , Sylvain Lalot , Mathieu Couvrat , François Beaubert , David Uystepruyst
摘要： A tube for a steam cracking furnace comprising: at least one downstream tubular segment of circular section having a main diameter; at least one twisted tubular segment having a length less than a quarter of the length of the tube, and comprising: a central part with an elliptical or lobed section, having a helical pitch between one times and ten times the main diameter, and an aspect ratio of the elliptical or lobed section between 0.5 and 0.8; an upstream transition part establishing a geometric transition between the central part and a tubular segment of circular section; a downstream transition part establishing a geometric transition between the central part and the downstream tubular segment, with a fluid being intended to flow from the upstream transition part to the downstream transition part.
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2.发明申请公开(公告)号：US20200377801A1
公开(公告)日：2020-12-03
申请号：US16888390
申请日：2020-05-29
发明人： Bruce Indurain Y Urricelqui , Sylvain Lalot , Mathieu Couvrat , François Beaubert , David Uystepruyst
摘要： A tube for a steam cracking furnace comprising: at least one downstream tubular segment of circular section having a main diameter; at least one twisted tubular segment having a length less than a quarter of the length of the tube, and comprising: a central part with an elliptical or lobed section, having a helical pitch between one times and ten times the main diameter, and an aspect ratio of the elliptical or lobed section between 0.5 and 0.8; an upstream transition part establishing a geometric transition between the central part and a tubular segment of circular section; a downstream transition part establishing a geometric transition between the central part and the downstream tubular segment, with a fluid being intended to flow from the upstream transition part to the downstream transition part.
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