초록 ▼

A process is presented for the removal of oxygen from a hydrocarbon stream. The oxygen can react and cause polymerization of the hydrocarbons when the hydrocarbon stream is heated. Controlling the removal of the oxygen from the hydrocarbon stream produces a hydrocarbon stream that is substantially f

A process is presented for the removal of oxygen from a hydrocarbon stream. The oxygen can react and cause polymerization of the hydrocarbons when the hydrocarbon stream is heated. Controlling the removal of the oxygen from the hydrocarbon stream produces a hydrocarbon stream that is substantially free of oxygen and has a reduced activity for generating undesired compounds.

대표청구항 ▼

1. A process for stripping oxygen from a hydrocarbon feedstream, comprising: passing the feedstream through a preheater, thereby creating a preheated feedstream;passing the preheated feedstream to an oxygen stripper, thereby creating an intermediate stripped stream;passing a stripping gas to the oxy

1. A process for stripping oxygen from a hydrocarbon feedstream, comprising: passing the feedstream through a preheater, thereby creating a preheated feedstream;passing the preheated feedstream to an oxygen stripper, thereby creating an intermediate stripped stream;passing a stripping gas to the oxygen stripper to remove oxygen from the feedstream, thereby creating an overhead stream comprising oxygen;heating the intermediate stripped stream with a bottom heater, thereby removing additional stripping gas from the intermediate stripped stream and creating a liquid bottoms stream; andreturning the removed stripping gas to the oxygen stripper. 2. The process of claim 1 further comprising returning a portion of the bottoms liquid stream to the oxygen stripper. 3. The process of claim 1 wherein the intermediate stripped stream is heated to a higher temperature to further remove residual oxygen compounds from the liquid stream. 4. The process of claim 1 wherein the hydrocarbon is a kerosene or jet fuel stream. 5. The process of claim 1 further comprising passing the bottoms liquid stream to a fractionation column, thereby creating a vapor overhead stream, a light liquid stream and a heavy bottoms stream. 6. The process of claim 5 wherein the light stream comprises C10 and lighter hydrocarbons. 7. The process of claim 5 further comprising passing the heavy bottoms stream to a rerun column, thereby creating an overhead stream and a rerun bottoms stream. 8. The process of claim 7 wherein the rerun bottoms stream comprises C14 and heavier hydrocarbons. 9. The process of claim 1 wherein the preheater heats the feedstream to a temperature below 220° C. 10. The process of claim 9 wherein the preheater heats the feedstream to a temperature below 140° C. 11. The process of claim 1 wherein the bottom heater heats the intermediate stripped stream to a temperature sufficient to remove dissolved stripping gas. 12. The process of claim 11 wherein the bottom heater heats the intermediate stripped stream to a temperature of at least 140° C. 13. The process of claim 1 further comprising adding an anti-foulant to the bottoms liquid stream upstream of the bottoms heater. 14. The process of claim 1 wherein the stripping gas is a fuel gas containing little or no oxygen. 15. The process of claim 1 wherein the stripping gas is hydrogen containing little or no oxygen.