System for use of land fills and recyclable materials

A system of combined processes, in combination with at least one carbon dioxide cleaning process, at least one of the combined processes operating from a power source of at least three gas streams from a waste gas stream site are selected from the group consisting of:

• a) energy production, carbon black production, and hydrogen production;
• b) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and apparel cleaning;
• c) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and plastic cleaning;
• d) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, plastic cleaning and pellitization of cleaned plastic;
• e) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, plastic cleaning, plastic pellitization, and plastic molding or extrusion;
• f) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and aluminum cleaning;
• g) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, aluminum cleaning, and cleaned aluminum ingot/sheeting formation;
• h) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and glass/ceramic cleaning;
• and
• i) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, glass cleaning and glass melting processes,
• j) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation and solvent distillation processes
• wherein energy production comprises providing at least some energy derived from combustion of hydrocarbon gases from at least one of said three gas streams;
• and wherein in the cleaning process prior to cleaning with carbon dioxide, material to be cleaned is exposed to a solvent comprising at least one C1-C6 alkyl lactate and then exposed to the cleaning carbon dioxide.

A process for the cleaning of waste polymeric material comprising:

• providing solid polymer material,
• reducing the size of the solid polymeric material into segments of solid polymeric material,
• at least surface contacting the segments of solid polymeric material with a cleaning solvent,
• removing cleaning solvent to provide partially cleaned segments of solid polymeric material, and
• cleaning the partially cleaned segments of solid polymeric material with densified carbon dioxide;
• wherein the solvent comprises a solvent comprising C1-C6 alkyl lactate or a cosolvent system comprising at least one first cosolvent selected from the group consisting of terpene alcohol, d-Limonene, and isoparaffinic hydrocarbons and the least one second cosolvent selected from the group comprising of C1-C6 alkyl lactate.

A liquefied-gas cleaning system in which gas cleaning material is recycled within the system comprising:

• a liquefied-gas cleaner storage tank;
• a vent from the liquefied-gas cleaner storage tank to assist in conveying gas phase of the liquid cleaner to a cleaning region when the cleaning region is not cleaning with liquid gas so that vented gas may be stored as stored gas,
• a second venting system for transporting stored gas to a cooling tank where gas cleaner is cooled to a liquid as recycled liquefied gas and
• a further conveying system by which recycled liquefied-gas is introduced into the cleaning tank as a cleaning solvent or is placed into the liquefied-gas cleaner storage tank.

A system of combined processes operating from a source of at least three gas streams from a waste gas stream site are selected from the group consisting of:

• k) energy production, carbon black production, and hydrogen production;
• l) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and apparel cleaning;
• m) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and plastic cleaning;
• n) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, plastic cleaning and pellitization of cleaned plastic;
• o) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, plastic cleaning, plastic pellitization, and plastic molding or extrusion;
• p) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and aluminum cleaning;
• q) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, aluminum cleaning, and cleaned aluminum ingot/sheeting formation;
• r) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, and glass/ceramic cleaning;
• and
• s) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation, glass cleaning and glass melting processes, t) energy production, carbon dioxide liquification, supercritical or liquid carbon dioxide formation and solvent distillation processes
• wherein energy production comprises providing at least some energy derived from combustion of hydrocarbon gases from at least one of said three gas streams where the waste gas stream site comprises a site having distinct cells of landfill waste mass and controls are present so that waste gas stream sites may be opened and closed from selected cells to control waste gas flow through the system wherein at least some carbon dioxide from a carbon dioxide stream is used in a polymeric cleaning process, and cleaned polymer from the polymer cleaning process is palletized and label removed from palletized polymer using a cosolvent system comprising at least a first cosolvent selected from the group consisting of terpenes, D-limonene and parafinnic hydrocarbons, and at least one second cosolvent selected from the group consisting of C1-C6 alkyl lactates;
• and;
• carbon dioxide cleaning material is recycled within a cleaning and recycling portion of the system that comprises:
• a liquefied carbon dioxide storage tank;
• a vent from the liquefied carbon dioxide storage tank to assist in conveying a gas phase of the carbon dioxide cleaning material to a cleaning region when the cleaning region is not in a cleaning mode with liquid gas so that vented gas may be stored as stored gas,
• a second venting system for transporting stored gas to a cooling tank where gas cleaner is cooled to a liquid as recycled liquefied carbon dioxide and
• a further conveying system by which recycled liquefied carbon dioxide is introduced into the cleaning tank as a cleaning solvent or is placed into the liquefied carbon dioxide storage tank.