Patent EA-000979-B1 (EA)
Title: Moulded fuel, variants, and methods for producing the same
Inventor: LURY VALERY GRIGORIEVICH
IPC: C10L5/40
Filed: 1998-07-24
Abstract: 1. Moulded fuel based on a dried mixture of ground solid fuels and of a binder containing waste from the crude-oil processing industry such as oil sludge and/or recycled engine oil, characterized in that the binder further comprises components selected from the following group (in % relative to the weight of the mixture): from 2 to 7 % of lignosulphonate or molasses and/or from 3 to 8 % of dehydrated activated sludge and/or from 3 to 10 % of clay and/or from 1 to 6 % of paraffin or raw paraffin with the following ratio of components in % by weight:   binder 10-32 dried mixture of ground solid fuel from the group: wood sawdust, peat, dehydrated manure, dehydrated bird litter, coke or coal fines, coal sludge, lignin or mixtures thereof remaining   2. The moulded fuel based on a dried mixture of ground solid fuels and of concentrated sludge from wastewater processing plants, characterized in that comprises concentrated sludge having water content between 5 and 14 % with the following ratio of components in % by weight:   concentrated sludge having water content between 5 and 14 % 13-38 dried mixture of ground solid fuel from the group: wood or vegetal waste, lignin, peat, coke or coal fines, textile waste or mixtures thereof remaining   3. A method for producing moulded fuel according to claim 1, which involves mixing the ground solid fuel with the binder based on waste from the crude-oil processing industry such as oil sludge and/or recycled engine oil, moulding the mixture and drying the mouldings, characterized in that the binder further comprises components selected from the following group (in % relative to the weight of the mixture): from 2 to 7 % of lignosulphonate or molasses and/or from 3 to 8 % of dehydrated activated sludge and/or from 3 to 10 % of clay and/or from 1 to 6 % of paraffin or raw paraffin with the following ratio of components in % by weight: binder 10-32 % and dried mixture of ground solid fuel from the group: wood sawdust, peat, dehydrated manure, dehydrated bird litter, coke or coal fines, coal sludge, lignin or mixtures thereof remaining %, the mixture is moulded under a pressure of between 1 and 30 MPa. and the mouldings are further dried at a temperature of not less than 300 degree C. 4. The method for producing moulded fuel according to claim 2, which involves mixing the ground solid fuel with the concentrated sludge from waste water processing plants, moulding the mixture and drying the mouldings, characterized in that the comprises mixing concentrated sludge having water content between 70 and 80%, the mixture is moulded under a pressure of between 0.1 and 25 MPa. and the mouldings are further dried at a temperature of 50-180 degree C for a duration of 1.5 to 0.4 hours or said mouldings are dried at room temperature for a duration of 5 to 30 hours with the following ratio of components in % by weight: concentrated sludge having water content between 5 and 14 % - 13-38%, dried mixture of ground solid fuel from the group: wood or vegetal waste, lignin, peat, coke or coal fines, textile waste or mixtures thereof - remaining %. 5. The moulded fuel according to claim 2, characterized in that further comprises up to 1-40% of oil sludge and/or recycled engine oil and/or fat residues. 6. The method according to claim 3, characterized in that the components of the binder are mixed prior to be mixed with the ground solid fuel. 7. The method according to claim 3 and 6, characterized in that prior to mixing the components of the binder are heated to 60-80 degree C or mixed with heating to 60-80 degree C. 8. The method according to claim 3, 6 and 7, characterized in that the ground solid fuel is preliminarily mixed with half of oil sludge and/or recycled engine and further add the rest components of the binder. 9. The method according to claim 4, characterized in that after drying the mouldings are sprayed with or dipped into liquid heated oil sludge or recycled engine oil, and/or paraffin or raw paraffin, and/or fat residues up they reach 10-40 wt % in the moulded fuel.