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A process for the production of a synthesis gas containing hydrogen and carbon monoxide utilizes shredded waste tires that are substantially free of metal particles as a feedstream, either alone or in combination with a residual oil feedstream, for gasification in the combustion chamber of a tubular

A process for the production of a synthesis gas containing hydrogen and carbon monoxide utilizes shredded waste tires that are substantially free of metal particles as a feedstream, either alone or in combination with a residual oil feedstream, for gasification in the combustion chamber of a tubular wall membrane partial oxidation gasification reactor in the presence of a predetermined amount of oxygen. Optionally, the product synthesis gas is introduced as the feedstream to a water gas shift reactor to enhance the hydrogen content of the final product stream.

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1. An integrated process for the gasification of waste automotive tires in an oil refinery comprising: a. preparing the waste tires so that they are substantially free of metal;b. shredding the waste tires to produce a free-flowing mass of hydrocarbon-containing particles that are substantially free

1. An integrated process for the gasification of waste automotive tires in an oil refinery comprising: a. preparing the waste tires so that they are substantially free of metal;b. shredding the waste tires to produce a free-flowing mass of hydrocarbon-containing particles that are substantially free of metal;c. introducing the waste tire particles into a moving fluid feedstream containing residual oil produced in the refinery's operation to form a pressurized fluidized feedstock containing the solid waste tire particles that is a pumpable dispersion;d. injecting the fluidized feedstock containing solid waste tire particles in residual oil into the combustion chamber of a tubular wall membrane partial oxidation gasification reactor and introducing into the reactor a predetermined amount of oxygen, where the amount of waste tire particles and oxygen entering the reactor are controlled to provide a stoichiometric balance for partial combustion based on the hydrocarbon content of the waste tire particles;e. operating the gasification reactor at a temperature in the range of 900° C. to 1700° C. and a pressure of from 20 to 100 bars;f. subjecting the feedstock to partial oxidation to maximize the production of synthesis gas consisting of hydrogen and carbon monoxide, and to produce a slag material;g. recovering the hydrogen and carbon monoxide synthesis gas from the reactor;h. passing the hot synthesis gas to a water-cooled heat exchanger to cool the synthesis gas; andi. recovering high pressure steam from the heat exchanger and introducing the steam into a turbine to produce electricity for use in refinery operations. 2. The process of claim 1 in which a portion of the waste tire particles are fluidized in a gaseous feedstream to supplement the feedstock to the membrane reactor. 3. The process of claim 1 in which the waste tire particles pass a 35 Tyler mesh size. 4. The process of claim 2 in which the gaseous feedstream contains oxygen. 5. The process of claim 4 in which the gaseous feedstream is air. 6. The process of claim 1 in which the ratio of oxygen-to-carbon in the gasifier is from 0.5:1 to 10:1 by weight. 7. The process of claim 6 in which the ratio of oxygen-to-carbon is from 1:1 to 5:1 by weight. 8. The process of claim 7 in which the ratio of oxygen-to-carbon is from about 1:1 to 2:1 by weight. 9. The process of claim 1 which includes introducing steam into a combustion chamber in the ratio of from 0.1:1 to 10:1 by weight of carbon in the feedstock. 10. The process of claim 9 in which the steam is introduced in the ratio of from 0.1:1 to 2:1 b weight of carbon in the feedstock. 11. The process of claim 10 in which the steam is introduced in the ratio of from 0.4:1 to 0.6:1 by weight of carbon in the feedstock. 12. The process of claim 1 which includes subjecting the cooled synthesis gas from step (h) to a water gas shift reaction, recovering a mixed stream of hydrogen and carbon dioxide, and thereafter recovering a product stream of hydrogen. 13. The process of claim 12 in which the water gas shift reaction is conducted in the range of from 150° C. to 400° C. and at a pressure of from 1 to 60 bars. 14. The process of claim 13 in which the water gas shift reaction is maintained at a temperature of from 150° C. to 400° C. and a pressure of from 1 to 60 bars. 15. The process of claim 13 in which the water-to-carbon monoxide mole ratio is 5:1. 16. The process of claim 13 in which the water-to-carbon monoxide mole ratio is at least 3:1. 17. The process of claim 1 in which the ash content is from 2 to 10 W % of the feedstream.