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    • 6. 发明授权
    • Injection of antifoulants into thermal cracking process streams
    • 将防污剂注入热裂解工艺流中
    • US5435904A
    • 1995-07-25
    • US300672
    • 1994-09-01
    • Larry E. ReedTimothy P. HarperRonald E. Brown
    • Larry E. ReedTimothy P. HarperRonald E. Brown
    • C10G9/16
    • C10G9/16
    • A method of injecting a liquid tin-containing antifoulant into a saturated hydrocarbon feed stream for a thermal cracking reactor comprises providing a first open-ended tube, a second open-ended tube which concentrically surrounds the first tube, and a third tube which concentrically surrounds the first and second tubes; passing a liquid antifoulant stream through the first tube, a dispersing gas stream through the second tube, and a hydrocarbon gas stream (preferably containing ethane and steam) through the third tube; injecting the liquid antifoulant through the open end of the first tube and the dispersing gas through the open end of the second tube into the hydrocarbon gas stream; and passing the mixture of dispersed antifoulant, dispersing gas and hydrocarbon gas into a thermal cracking reactor.
    • 将含液体锡的防污剂注入到用于热裂解反应器的饱和烃进料流中的方法包括提供第一开口管,同心地围绕第一管的第二开口管,以及同心围绕的第三管 第一和第二管; 使液体防污剂流通过第一管,通过第二管的分散气流和通过第三管的烃气流(优选含有乙烷和蒸汽); 将液体防污剂通过第一管的开口端和分散气体通过第二管的开口端注入烃气流中; 并将分散的防污剂,分散气体和烃气体的混合物通入热裂解反应器中。
    • 8. 发明授权
    • Injection of antifoulants into thermal cracking reactors
    • 将防污剂注入热裂解反应器
    • US5284994A
    • 1994-02-08
    • US4391
    • 1993-01-13
    • Ronald E. BrownK. James SasakiLarry E. Reed
    • Ronald E. BrownK. James SasakiLarry E. Reed
    • C07C4/04C10G9/16C23F11/02
    • C10G9/16C07C4/04Y10S585/95
    • A liquid tin-containing antifoulant composition is injected into a metal-walled thermal cracking reactor tube, concurrently with the injection of a gaseous stream (preferably a steam-diluted C.sub.2 -C.sub.4 alkane stream), through a nozzle of an injection quill which is positioned in the center region of the reactor tube substantially parallel to the flow of the gaseous stream.A liquid tin-containing antifoulant is injected into a metal-walled thermal cracking reactor tube through a nozzle of an injection quill at a temperature of about 1000.degree.-1300.degree. F. while a gaseous stream (preferably a steam-diluted C.sub.2 -C.sub.4 alkane stream) flows through the reactor tube, followed by raising the temperature to about 1400.degree.-1800.degree. F. Preferably, the metal walls of the reactor tube are treated with steam after the antifoulant injection at about 1000.degree.-1300.degree. F. but before the antifoulant injection at about 1400.degree.-1800.degree. F.
    • 将含液体锡的防污剂组合物注入到金属壁热裂解反应器管中,同时注入气流(优选蒸汽稀释的C2-C4烷烃流),该注射套管位于 在反应器管的中心区域基本上平行于气流的流动。 将含液体锡的防污剂通过注射针筒的喷嘴在约1000-130华氏度的温度下注入金属壁热裂解反应器管中,同时气流(优选蒸汽稀释的C2-C4烷烃 流)流过反应器管,随后将温度升高至约1400-180°F。优选地,反应器管的金属壁在约1000-130华氏度之后的防污注射之后用蒸汽处理。 约1400度-1800华氏度的防污剂注射