PRODUCCION DE GAS DE SINTESIS CON BAJO CONTENIDO DE AZUFRE, A PARTIR DE GAS CON RECUPERACION DE HIDROCARBUROS DE C4+/C5

• Main Authors: ALEXION DENNIS GEORGE, O`CONNOR RICHARD PETER, TAYLOR JAMES HOWARD JR, GLASS JAMES PARK JR, SAY GEOFFREY RHYS, FEDICH ROBERT BASIL, WILBUR JOHN C
• Format: Patent
• Language: Spanish
• Published: 27.03.2000
• Edition: 7
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PERFORMING OPERATIONS; PETROLEUM, GAS OR COKE INDUSTRIES; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TRANSPORTING

PROCEDIMIENTO PARA ELIMINAR AZUFRE DE UN GAS NATURAL, EL CUAL COMPRENDE : i) CONTACTAR DICHO GAS NATURAL DE ALTA PROPORCION DE AZUFRE CON UN ABSORBENTE LIQUIDO DE AZUFRE, DE PREFERENCIA UNA AMINA RESTRINGIDA, PARA ELIMINAR LA MAYOR PARTE DEL AZUFRE Y FORMAR UN GAS CON AZUFRE REDUCIDO; ii) ENFRIAR EL GAS FORMADO EN (i) A UNA TEMPERATURA SUFICIENTE PARA CONDENSAR LOS HIDROCARBUROS C4-C5 Y COMPUESTOS DE AZUFRE REMANENTES; iii) SEPARAR LOS HIDROCARBUROS LIQUIDOS C4-C5 DE DICHO GAS Y RECUPERARLOS PARA FORMAR UN GAS CON AZUFRE REDUCIDO E HIDROCARBURO; iv) CONTACTAR EL GAS FORMADO EN (iii) CON UNO o MAS ABSORBENTES o ADSORBENTES PARA ELIMINAR EL AZUFRE, DE PREFERENCIA OXIDO DE ZINC Y NIQUEL. ADICIONALMENTE EL GAS FORMADO EN (iv), SE PUEDE CALENTAR A 100°F, CONTACTAR CON OXIDO DE ZINC Y NIQUEL, Y HACERLO REACCIONAR CON OXIGENO PARA FORMAR GAS DE SINTESIS Sour natural gas is processed to remove the sulfur compounds and recover C4+/C5+ hydrocarbons by scrubbing the gas with an amine solution to remove most of the sulfur, followed cooling the gas to remove C4+/C5+ hydrocarbons and more sulfur compounds as liquid condensate to produce a gas having less than 20 vppm of total sulfur. The condensate is sent to a fractionator to recover the C4+C5+ hydrocarbons. The sulfur and hydrocarbon reduced gas is contacted first with zinc oxide and then nickel, to produce a gas having less than 10 vppb of total sulfur which is passed into a synthesis gas generating unit to form a very low sulfur synthesis gas comprising a mixture of H2 and CO. This synthesis gas is useful for hydrocarbon synthesis with increased life of the hydrocarbon synthesis catalyst and greater hydrocarbon production from the hydrocarbon synthesis reactor. Contacting the synthesis gas with zinc oxide further reduces the sulfur content to below 3 vppb.