E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 37/06 (2006.01) C09K 8/52 (2006.01)
Patent
CA 2179515
A method is provided for inhibiting the formation of hydrates in streams containing low-boiling hydrocarbons and water. The method includes adding to the stream a component of formula (I), wherein R1, R2, and R3 are independently chosen from the group consisting of normal and branched alkyls having at least 4 carbon atoms, X is selected from the group consisting of S, N-R4, and P-R4, R4 is selected from the group consisting of hydrogen and organic substituents and Y- is an anion. The amount added is an amount that is effective to inhibit formation of hydrates in the mixture at conduit temperatures and pressures. The preferred R4 is an alkyl or alkenyl having from eight to twenty carbons, and the preferred R1, R2, and R3 are alkyls having four to six carbons atoms.
Ce procédé est destiné à empêcher la formation d'hydrates dans des flux contenant des hydrocarbures à bas point d'ébullition et de l'eau. Il consiste à ajouter au flux un composant de la formule (I), dans laquelle R¿1?, R¿2? et R¿3? sont choisis indépendamment dans le groupe consistant en alkyles normaux ou ramifiés possédant au moins quatre atomes de carbone, X est choisi dans le groupe consistant en S, N-R¿4?, et P-R¿4?, R¿4? est choisi dans le groupe consistant en hydrogène et en substituants organiques, et Y?-¿ est un anion. La quantité ajoutée est une quantité suffisamment efficace pour empêcher la formation d'hydrates dans le mélange aux températures et pressions présents dans les conduits. Le R¿4? préféré est un alkyle ou un alcényle possédant 8 à 20 atomes de carbone, et les R¿1?, R¿2? et R¿3? préférés sont des alkyles possédant quatre à six atomes de carbone.
Klomp Ulfert Cornelis
Kruka Vitold Raimond
Reijnhart Rene
Weisenborn Anton Jacobus
Shell Canada Limited
Smart & Biggar
LandOfFree
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