US 4,822,379 AGranted

Solid fuel composition from waste products

OwnerJeffery Thompsoninventor

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Abstract

A solid fuel comprised of waste materials and a method of using the same are disclosed. The composition is made up of a heating value component, a neutralizing component and a nuisance waste component. Each of these components is a material which is readily available as a waste. Each component may be either solid or liquid, however, the total composition may not be more than 40% liquid. The nuisance waste component is a compound or mixture of compounds which often present disposal problems for industry. The nuisance wastes may include chlorinated hydrocarbons such as polychlorinated biphenyls, sulfur containing compounds, biological wastes and/or metals which are converted to stable and more easily disposed of compounds as the fuel briquette is burned in a kiln or furnace so that an inexpensive fuel is created from the waste products.

Claims9

Dependent claims

A method of selectively capturing nuisance chemical components within the residual ash of a combusted mixture of waste compounds, said method comprising the steps of:

(a) forming a combustible mixture from:
(i) a nuisance waste component, which nuisance waste contains a material including at least one of the group consisting of lead, chromium, manganese, cadmium, beryllium, barium, selenium, arsenic, vanadium, antimony, bismuth, strontium, zirzonium, germanium, copper, nickel, zinc, aluminum, sulfur, hydrocarbons, biological wastes and mixtures thereof;
(ii) a heating value component;
and
(iii) a neutralizing component consisting of the oxides, hydroxides and carbonates of calcium, magnesium, and sodium, and at least one of SiO.sub.2, Al.sub.2 O.sub.3, Fe.sub.2 O.sub.3, ZnO and mixtures thereof;
(b) pressing said combustible mixture at a pressure sufficient to form a structurally stable solid having a net heating value of at least 200 btu/lb of said solid;
and
(c) converting said nuisance waste components to compounds resistant to water extraction by burning said combustible mixture, said neutralizing component being selected to cause said nuisance components to form said compounds resistant to water extraction.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/023,800Filed 9 Mar 1987 · continuation in part
Priority: 10 Jun 1986
Granted: 18 Apr 1989
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A62D 3/38
By reacting with chemical agents: by oxidation; by combustion
A62D 3/36
By reacting with chemical agents: detoxification by using acid or alkaline reagents
C10L 5/40
Solid fuels: essentially based on materials of non-mineral origin
C21C 5/36
Manufacture of steel in the converter: processes yielding slags of special composition