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    Injection of an electrically heated stream into a steam cracked product
    1.
    发明授权
    Injection of an electrically heated stream into a steam cracked product 失效
    将电加热流注入蒸汽破碎产品中

    公开(公告)号：US3641183A

    公开(公告)日：1972-02-08

    申请号：US3641183D

    申请日：1968-07-09

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： CAHN ROBERT P ,  ANGIER DEREK J

    IPC: C10G9/36 ,  C07C3/00 ,  C07C11/24

    CPC classification number: C10G9/36 ,  C10G2400/20 ,  Y10S585/913

    Abstract: A STEAM CRACKING FEED MIXTURE CONTAINING STEAM AND HYDROCARBON IS CONVENTIONALLY CRACKED IN THE TUBES OF A STEAM CRACKING FURNACE. THE CONVERSION OF HYDROCARBON TO CRACKED PRODUCT CAN BE INCREASED BY INJECTING A HIGH TEMPERATURE GASEOUS STREAM SUCH AS CAN BE PRODUCED BY ELECTRICAL HEATING, INTO THE MIXTURE IN THE CRACKING FURNACE OR INTO THE MIXTURE AS IT EMERGES FROM THE CRACKING FURNACE, THUS SUBJECTING THE FURNACE EFFLUENT TO SHORT RESIDENCE TIME, HIGH TEMPERATURE CRACKING CONDITIONS. IN ONE METHOD, METHANE IS ELECTRICALLY HEATED AND CRACKED TO A MIXTURE COMPRISING ACETYLENE AND HYDROGEN, WHICH IS THEN INJECTED INTO THE PRODUCT FROM THE STEAM CRACKER, THEREBY CAUSING ADDITIONAL CRACKING OF THE STEAM CRACKER FEED AND QUENCHING OF THE ELECTRICALLY CRACKED PRODUCT TO PRESERVE THE ACETYLENE CONTENT THEREOF. THE LECTRICALLY HEATED STREAM MAY, HOWEVER, CONTAIN HYDROGEN, STEAM, HYDROCARBONS, E.G. ACETYLENE, OR MIXTURES THEREOF AS THE COMPONENTS OF GREATEST CONCENTRATION.

    Recovery of high purity butadiene by cuprous salt particles in all slurry process
    6.
    发明授权
    Recovery of high purity butadiene by cuprous salt particles in all slurry process 失效
    在所有浆液过程中通过铜盐沉淀回收高纯度二倍体

    公开(公告)号：US3637888A

    公开(公告)日：1972-01-25

    申请号：US3637888D

    申请日：1970-02-26

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： CAHN ROBERT P ,  DEFEO RICHARD J ,  TAYLOR JAMES H JR

    IPC: C07C7/156 ,  C07C7/00 ,  C07C7/16 ,  C07C11/16

    CPC classification number: C07C7/156 ,  C07C11/167

    Abstract: RECOVERY OF HIGH PURITY BUTADIENE BY LIQUID PHASE SLURRY COMPLEXING IS CONDUCTED WITH AN ACTIVE CUPROUS HALIDE SORBENT SLURRIED IN A PARAFFIN-CONTAINING ORGANIC DILUENT, COUPLED WITH SLURRY STRIPPING AND DESORPTION OF COMPLEXED BUTADIENE IN THE PRESENCE OF THE DILUENT. THE PRESSURES AND TEMPERATURES ARE CAREFULLY CONTROLLED DURING THE COMPLEXING STEP IN ORDER TO PROVIDE A HIGH DRIVING FORCE SO AS TO OBTAIN A HIGH RATE OF BUTADIENE COMPLEXING WITH THE CUPROUS HALIDE, AND TO ACHIEVE A HIGH LOADING OF THE SORBENT WITH COMPLEXED BUTADIENE. IN ADDITION, OTHER NOVEL AND IMPROVED TECHNIQUES FOR RECOVERING THE HIGH PURITY BUTADIENES ARE DISCLOSED.

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