A method and system for processing naphtha, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of gas in a naphtha hydrocarbon liquid in a high shear device prior to introduction in a cracking reactor/furnace. In another instance the system for pro
A method and system for processing naphtha, including a high shear mechanical device. In one embodiment, the method comprises forming a dispersion of gas in a naphtha hydrocarbon liquid in a high shear device prior to introduction in a cracking reactor/furnace. In another instance the system for processing naphtha comprises a high shear device for mechanically shearing hydrocarbons.
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1. A method for processing naphtha, the method comprising: introducing a high shear feed stream comprising naphtha and a dispersible phase to a high shear device, wherein the high shear device is configured to produce a shear rate of at least 20,000 s−1, thus forming a dispersion of the dispersible
1. A method for processing naphtha, the method comprising: introducing a high shear feed stream comprising naphtha and a dispersible phase to a high shear device, wherein the high shear device is configured to produce a shear rate of at least 20,000 s−1, thus forming a dispersion of the dispersible phase in the naphtha stream, wherein the dispersible phase comprises steam, and wherein the dispersion comprises steam dispersed therein, and a carrier liquid. 2. The method of claim 1, wherein the dispersion comprises gas bubbles with a mean diameter of less than 50 μm. 3. The method of claim 2, wherein the gas bubbles have a mean diameter of less than about 5 μm. 4. The method of claim 1, wherein introducing the high shear feed stream comprises pumping the high shear feed stream into the high shear device at an elevated pressure. 5. A method for processing naphtha, the method comprising: introducing a high shear feed stream comprising naphtha and a dispersible phase to a high shear device, wherein the high shear device is configured to produce a shear rate of at least 20,000 s−1, thus forming a dispersion of the dispersible phase in the naphtha stream; andcracking at least a portion of the components of the dispersion in a steam cracking furnace, thus producing a cracked product. 6. The method of claim 5, wherein the steam cracking furnace comprises convection and radiant zones. 7. The method of claim 6 further comprising separating a separator feed extracted from the convection zone into a heavy hydrocarbon fraction and a light hydrocarbon fraction, and introducing the light hydrocarbon fraction back into the steam cracking furnace. 8. The method of claim 7, wherein the dispersible phase comprises steam, and wherein the steam cracking furnace further comprises a thermal exchange section configured to route at least a portion of the dispersion outside the steam cracking furnace, whereby the method further comprises producing steam via thermal exchange with the thermal exchange section. 9. The method of claim 5, wherein the cracking furnace is operated at a temperature in the range of from about 200° C. to about 1100° C., and a pressure in the range of from about 1 atm to about 2 atm. 10. The method of claim 5 further comprising quenching the cracked product. 11. The method of claim 10, wherein quenching is performed in from 1 ms to 100 ms. 12. The method of claim 10, wherein quenching reduces the temperature of the cracked product from a temperature in the range of from about 600° C. to about 1100° C., to a temperature in the range of from about 200° C. to about 400° C. 13. A method for processing naphtha, the method comprising: introducing a high shear feed stream comprising naphtha and a dispersible phase to a high shear device, wherein the high shear device is configured to produce a shear rate of at least 20,000 s−1, thus forming a dispersion of the dispersible phase in the naphtha stream, wherein the high shear device is operated to produce a dispersion comprising primarily micron or submicron-sized steam particles dispersed in naphtha. 14. The method of claim 1 further comprising a second high shear device configured to homogenize the naphtha prior to combination thereof with the dispersible phase. 15. The method of claim 1, wherein the high shear device is operated at a tip speed of greater than 23 m/s.
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이 특허에 인용된 특허 (11)
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