US 12,134,744 B1
Process and system for producing engineered fuel
Richard A. Toberman, Galveston, TX (US)
Assigned to WM INTELLECTUAL PROPERTY HOLDINGS, L.L.C., Houston, TX (US)
Filed by WM INTELLECTUAL PROPERTY HOLDINGS, L.L.C., Houston, TX (US)
Filed on Oct. 24, 2022, as Appl. No. 17/972,355.
Application 17/972,355 is a continuation of application No. 17/064,079, filed on Oct. 6, 2020, granted, now 11,479,733, issued on Oct. 25, 2022.
Application 17/064,079 is a continuation of application No. 16/556,415, filed on Aug. 30, 2019, granted, now 10,793,798, issued on Oct. 6, 2020.
Application 16/556,415 is a continuation of application No. 15/192,533, filed on Jun. 24, 2016, granted, now 10,400,188, issued on Sep. 3, 2019.
Claims priority of provisional application 62/184,163, filed on Jun. 24, 2015.
Int. Cl. C10L 5/46 (2006.01); B03B 9/06 (2006.01); C10L 5/40 (2006.01)
CPC C10L 5/46 (2013.01) [B03B 9/06 (2013.01); C10L 5/406 (2013.01); C10L 2290/08 (2013.01); C10L 2290/28 (2013.01); C10L 2290/30 (2013.01); C10L 2290/38 (2013.01); C10L 2290/40 (2013.01); C10L 2290/54 (2013.01); C10L 2290/546 (2013.01); Y02E 50/10 (2013.01); Y02E 50/30 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A process for treating a solid waste material in a process facility, the process comprising:
presorting the solid waste material on an inbound tipping floor of the process facility to remove a first set of waste components from the solid waste material, the first set of waste components comprising bulky material and accessible recyclable fibers and clean plastics;
size-reducing the solid waste material to a smaller dimensional size after the first set of waste components are removed from the solid waste material;
drying the solid waste material to reduce the moisture content;
introducing the solid waste material into a density separator, the solid waste material comprising heavier weight components, medium weight components and lighter weight components, wherein the combined medium weight components and lighter weight components introduced into the density separator have a combined density of 8 pounds/cubic foot or less;
separating the heavier weight components from the medium weight components and the lighter weight components in the separator;
positioning a receiver at either a first receiving location or a second receiving location with respect to the separator, wherein the receiver is capable of receiving the medium weight components and the lighter weight components, and wherein the first receiving location receives more of the medium weight components than the second receiving location;
capturing an amount of the medium weight components and an amount of the lighter weight components in the receiver;
recombining the medium weight components and the lighter weight components to form a recombined solid waste material;
proportionally adding a clean stream to the recombined solid waste material, the clean stream comprising fibers and clean plastics, such that a desired plastics content is introduced into the recombined solid waste material; and
removing a second set of waste components from the recombined solid waste material, the second set of waste components comprising ferrous and non-ferrous metals.