Hydrocarbon conversion process

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 69/02 (2006.01) C10G 65/04 (2006.01) C10G 65/08 (2006.01) C10G 69/06 (2006.01)

Patent

CA 2262392

This invention provides an integrated process for converting a hydrocarbon feedstock having components boiling above about 100 °C into steam cracked products, which process comprises passing said feedstock to a hydrotreating zone at a pressure in the range of from about 400 psig to about 1,250 psig to effect substantially complete decomposition of organic sulfur and/or nitrogen compounds, passing the product from said hydrotreating zone to a steam cracking zone, and recovering therefrom hydrogen and C1-C4 hydrocarbons, steam cracked naphtha, steam cracked gas oil and steam cracked tar therefrom, wherein the amount of steam cracked tar produced is reduced by at least about 15 percent, basis the starting hydrocarbon feedstock which has not been subjected to hydrotreating.

Cette invention se rapporte à un procédé intégré de conversion d'une charge d'alimentation en hydrocarbures comportant des composants pouvant bouillir à une température supérieure à 100 DEG C environ et donner des produits de vapocraquage. Ledit procédé consiste à faire passer ladite charge d'alimentation dans une zone d'hydrotraitement à une pression manométrique comprise entre 400 psi environ et 1250 psi environ de façon à provoquer une décomposition sensiblement complète du soufre organique et/ou des composés azotés, à faire passer le produit issu de la zone d'hydrotraitement vers une zone de vapocraquage et à récupérer à partir de cette dernière l'hydrogène et les hydrocarbures C1-C4, les produits "naphta" issus du vapocraquage, le pétrole gazeux issu du vapocraquage et le goudron issu du vapocraquage, la quantité de goudron ainsi récupérée étant réduite d'au moins 15 % environ, par rapport à la charge d'alimentation de départ contenant des hydrocarbures et n'ayant pas subi d'hydrotraitement.

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