Techniques for locating and operating gasification plant having predominately scrap tire rubber as feedstock
AssigneeGreentire Energy LLC
InventorsJerome N. Block, Ulf Hansson, Nicholas Z. Hegedus
Life of this patent
Estimating the term…
Abstract
A parcel of land on which to site the plant is identified. The parcel of land is located such that about 3,500,000 to about 7,500,000 scrap tires per year are available for substantially regular and substantially continuous delivery to the plant, at a tipping fee of at least about $40.00 per ton. The plant is located on the parcel of land. One or more of synthesis gas, electricity, and steam produced by the plant are sold.
Claims3
A method for locating and operating a gasification plant employing predominately tire-derived fuel as a feedstock, said method comprising the steps of:
- identifying a parcel of land on which to site said plant, said parcel of land being located such that at least about 3,500,000 scrap tires per year are available for substantially regular and substantially continuous delivery to said plant, at a predetermined adequate tipping fee;
- locating said plant on said parcel of land;
- operating said plant on said parcel of land by:
- shredding at least a portion of said 3,500,000 scrap tires into pellets;
- and
- gasifying said pellets to produce synthesis gas;
- selling at least one of synthesis gas, electricity produced by combusting said synthesis gas, and steam produced by combusting said synthesis gas;
- wherein said identifying step comprises the sub-steps of:
- generating a visual representation of a geographic region of interest, wherein said visual representation includes at least one window adjacent at least one tire supplier location;
- superimposing over said visual representation at least one criteria object, comprising at least one of a point, a line, and an area;
- and
- identifying said parcel as lying within said at least one window and proximate said at least one criteria object.
A method for locating and operating a gasification plant employing predominately tire-derived fuel as a feedstock, said method comprising the steps of:
- identifying a parcel of land on which to site said plant, said parcel of land being located such that at least about 3,500,000 scrap tires per year are available for substantially regular and substantially continuous delivery to said plant, at a predetermined adequate tipping fee;
- locating said plant on said parcel of land;
- operating said plant on said parcel of land by:
- shredding at least a portion of said 3,500,000 scrap tires into pellets;
- and
- gasifying said pellets to produce synthesis gas, by:
- introducing said pellets into an updraft, fixed-bed gasifier;
- and
- introducing into said updraft, fixed-bed gasifier, adjacent said pellets, at least one of air, oxygen, and steam;
- flowing said synthesis gas in an updraft to a gas exit of said updraft, fixed-bed gasifier, during operation of said updraft, fixed-bed gasifier;
- and
- selling at least one of said synthesis gas, electricity produced by combusting said synthesis gas, and steam produced by combusting said synthesis gas;
- wherein said step of introducing said pellets into said updraft, fixed-bed gasifier comprises introducing said pellets at a rate of from about 7,990 lbs/hour to about 17,123 lbs/hour;
- and
- wherein said step of introducing said at least one of air, oxygen, and steam into said updraft, fixed-bed gasifier comprises introducing air in sub-stoichiometric amounts.
Dependencies are inferred from the claim text.