Method of enhancing the operation of a diesel fuel combustion after treatment system

Abstract

A method of enhancing the operation of an emission after treatment system in a combustion system includes supplying a fuel and additive that includes a manganese compound to a combustion system. The fuel is then combusted in the combustion chamber to produce at least one byproduct including the manganese compound. The manganese compound is supplied in an amount effective to complex with the combustion byproduct. The combustion system may include a catalyzed, or alternatively, a continuously regenerating technology, diesel particulate filter.

What is claimed is:  
     
         1 . A method of enhancing the operation of an emissions after treatment system in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the operation of the emissions after treatment system is enhanced.    
     
     
         2 . The method described in  claim 1 , wherein the diesel fuel is selected from the group consisting of biodiesel, biodiesel-derived fuel, and synthetic diesel fuel.  
     
     
         3 . The method described in  claim 1 , wherein the diesel fuel contains less than 30 ppm of sulfur.  
     
     
         4 . The method described in  claim 1 , wherein the manganese compound is an inorganic manganese compound.  
     
     
         5 . The method described in  claim 4 , wherein the inorganic manganese compound is selected from the group consisting of fluorides, chlorides, bromides, iodides, oxides, nitrates, sulfates, phosphates, nitrides, hydrides, hydroxides carbonates and mixtures thereof.  
     
     
         6 . The method described in  claim 1 , wherein the manganese compound is an organometallic compound.  
     
     
         7 . The method described in  claim 6 , wherein the organometallic compound is selected from the group consisting of alcohols, aldehydes, ketones, esters, anhydrides, sulfonates, phosphonates, chelates, phenates, crown ethers, carboxylic acids, amides, acetyl acetonates and mixtures thereof.  
     
     
         8 . The method described in  claim 1 , wherein the manganese compound comprises about 1 to about 30 mgMn/liter of the fuel.  
     
     
         9 . The method described in  claim 6 , wherein the organometallic compound comprises methylcyclopentadienyl manganese tricarbonyl.  
     
     
         10 . The method described in  claim 1 , wherein the manganese compound is selected from the following group: cyclopentadienyl manganese tricarbonyl, methylcyclopentadienyl manganese tricarbonyl, dimethylcyclopentadienyl manganese tricarbonyl, trimethylcyclopentadienyl manganese tricarbonyl, tetramethylcyclopentadienyl manganese tricarbonyl, pentamethylcyclopentadienyl manganese tricarbonyl, ethylcyclopentadienyl manganese tricarbonyl, diethylcyclopentadienyl manganese tricarbonyl, propylcyclopentadienyl manganese tricarbonyl, isopropylcyclopentadienyl manganese tricarbonyl, tert-butylcyclopentadienyl manganese tricarbonyl, octylcyclopentadienyl manganese tricarbonyl, dodecylcyclopentadienyl manganese tricarbonyl, ethylmethylcyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, and the like, including mixtures of two or more such compounds.  
     
     
         11 . The method described in  claim 1 , wherein the combustion byproduct is selected from the group consisting of particulates, soot, unburned soot, uncombusted hydrocarbons, partially-combusted hydrocarbons, combusted hydrocarbons, and oxides of nitrogen.  
     
     
         12 . The method described in  claim 1 , wherein the combustion system further comprises a lean-NO x  storage device.  
     
     
         13 . A method of enhancing the operation of an emissions after treatment system in a diesel fuel combustion system comprising: 
 supplying a diesel fuel comprising an additive that includes a manganese compound to a diesel fuel combustion system, wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the operation of the emissions after treatment system is enhanced.    
     
     
         14 . The method described in  claim 13 , wherein the diesel fuel is selected from the group consisting of biodiesel, biodiesel-derived fuel, and synthetic diesel fuel.  
     
     
         15 . The method described in  claim 13 , wherein the diesel fuel contains less than 30 ppm of sulfur.  
     
     
         16 . The method described in  claim 13 , wherein the manganese compound is an inorganic manganese compound.  
     
     
         17 . The method described in  claim 16 , wherein the inorganic manganese compound is selected from the group consisting of fluorides, chlorides, bromides iodides, oxides, nitrates, sulfates, phosphates, nitrides, hydrides, hydroxides, carbonates and mixtures thereof.  
     
     
         18 . The method described in  claim 13 , wherein the manganese compound is an organometallic compound.  
     
     
         19 . The method described in  claim 18 , wherein the organometallic compound is selected from the group consisting of alcohols, aldehydes, ketones, esters, anhydrides, sulfonates, phosphonates, chelates, phenates, crown ethers, carboxylic acids, amides, acetyl acetonates and mixtures thereof.  
     
     
         20 . The method described in  claim 13 , wherein the manganese compound comprises about 1 to about 30 mgMn/liter of the fuel.  
     
     
         21 . The method described in  claim 18 , wherein the organometallic compound comprises methylcyclopentadienyl manganese tricarbonyl.  
     
     
         22 . The method described in  claim 13 , wherein the manganese compound is selected from the following group: cyclopentadienyl manganese tricarbonyl, methylcyclopentadienyl manganese tricarbonyl, dimethylcyclopentadienyl manganese tricarbonyl, trimethylcyclopentadienyl manganese tricarbonyl, tetramethylcyclopentadienyl manganese tricarbonyl, pentamethylcyclopentadienyl manganese tricarbonyl, ethylcyclopentadienyl manganese tricarbonyl, diethylcyclopentadienyl manganese tricarbonyl, propylcyclopentadienyl manganese tricarbonyl, isopropylcyclopentadienyl manganese tricarbonyl, tert-butylcyclopentadienyl manganese tricarbonyl, octylcyclopentadienyl manganese tricarbonyl, dodecylcyclopentadienyl manganese tricarbonyl, ethylmethylcyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, and the like, including mixtures of two or more such compounds.  
     
     
         23 . The method described in  claim 13 , wherein the combustion byproduct is selected from the group consisting of particulates, soot, unburned soot, uncombusted hydrocarbons, partially-combusted hydrocarbons, combusted hydrocarbons, and oxides of nitrogen.  
     
     
         24 . The method described in  claim 13 , wherein the combustion system further comprises a lean-NO x  storage device.  
     
     
         25 . A method of enhancing the operation of an emissions after treatment system in a diesel fuel combustion system comprising: 
 supplying a diesel fuel to a diesel fuel combustion system wherein the combustion system comprises a catalyzed diesel particulate filter,    combusting the fuel in the combustion system to produce at least one combustion byproduct in an exhaust stream;    injecting an additive comprising a manganese compound into the exhaust stream;    complexing the manganese compound with the at least one combustion byproduct;    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct;    whereby the operation of the after treatment system is enhanced.    
     
     
         26 . The method described in  claim 25 , wherein the diesel fuel is selected from the group consisting of biodiesel, biodiesel-derived fuel, and synthetic diesel fuel.  
     
     
         27 . The method described in  claim 25 , wherein the diesel fuel contains less than 30 ppm of sulfur.  
     
     
         28 . The method described in  claim 25 , wherein the manganese compound is an inorganic manganese compound.  
     
     
         29 . The method described in  claim 25 , wherein the inorganic manganese compound is selected from the group consisting of fluorides, chlorides, bromides, iodides, oxides, nitrates, sulfates, phosphates, nitrides, hydrides, hydroxides, carbonates and mixtures thereof.  
     
     
         30 . The method described in  claim 25 , wherein the manganese compound is an organometallic compound.  
     
     
         31 . The method described in  claim 30 , wherein the organometallic compound is selected from the group consisting of alcohols, aldehydes, ketones, esters, anhydrides, sulfonates, phosphonates, chelates, phenates, crown ethers, carboxylic acids, amides, acetyl acetonates and mixtures thereof.  
     
     
         32 . The method described in  claim 25 , wherein the manganese compound comprises about 1 to about 30 mgMn/liter of the fuel.  
     
     
         33 . The method described in  claim 30 , wherein the organometallic compound comprises methylcyclopentadienyl manganese tricarbonyl.  
     
     
         34 . The method described in  claim 25 , wherein the manganese compound is selected from the following group: cyclopentadienyl manganese tricarbonyl, methylcyclopentadienyl manganese tricarbonyl, dimethylcyclopentadienyl manganese tricarbonyl, trimethylcyclopentadienyl manganese tricarbonyl, tetramethylcyclopentadienyl manganese tricarbonyl, pentamethylcyclopentadienyl manganese tricarbonyl, ethylcyclopentadienyl manganese tricarbonyl, diethylcyclopentadienyl manganese tricarbonyl, propylcyclopentadienyl manganese tricarbonyl, isopropylcyclopentadienyl manganese tricarbonyl, tert-butylcyclopentadienyl manganese tricarbonyl, octylcyclopentadienyl manganese tricarbonyl, dodecylcyclopentadienyl manganese tricarbonyl, ethylmethylcyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, and the like, including mixtures of two or more such compounds.  
     
     
         35 . The method described in  claim 25 , wherein the combustion byproduct is selected from the group consisting of particulates, soot, unburned soot, uncombusted hydrocarbons, partially-combusted hydrocarbons, combusted hydrocarbons, and oxides of nitrogen.  
     
     
         36 . The method described in  claim 25 , wherein the combustion system further comprises a lean-NO x  storage device.  
     
     
         37 . A method of enhancing the operation of an emissions after treatment system in a diesel fuel combustion system comprising: 
 supplying a diesel fuel to a diesel fuel combustion system wherein the combustion system comprises a continuously regenerating technology diesel particulate filter,    combusting the fuel in the combustion system to produce at least one combustion byproduct in an exhaust stream;    injecting an additive comprising a manganese compound into the exhaust stream;    complexing the manganese compound with the at least one combustion byproduct;    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct;    whereby the operation of the after treatment system is enhanced.    
     
     
         38 . The method described in  claim 37 , wherein the diesel fuel is selected from the group consisting of biodiesel, biodiesel-derived fuel, and synthetic diesel fuel.  
     
     
         39 . The method described in  claim 37 , wherein the diesel fuel contains less than 30 ppm of sulfur.  
     
     
         40 . The method described in  claim 37 , wherein the manganese compound is an inorganic manganese compound.  
     
     
         41 . The method described in  claim 40 , wherein the inorganic manganese compound is selected from the group consisting of fluorides, chlorides, bromides, iodides, oxides, nitrates, sulfates, phosphates, nitrides, hydrides, hydroxides, carbonates and mixtures thereof.  
     
     
         42 . The method described in  claim 37 , wherein the manganese compound is an organometallic compound.  
     
     
         43 . The method described in  claim 42 , wherein the organometallic compound is selected from the group consisting of alcohols, aldehydes, ketones, esters, anhydrides, sulfonates, phosphonates, chelates, phenates, crown ethers, carboxylic acids, amides, acetyl acetonates and mixtures thereof.  
     
     
         44 . The method described in  claim 37 , wherein the manganese compound comprises about 1 to about 30 mgMn/liter of fuel.  
     
     
         45 . The method described in  claim 42 , wherein the organometallic compound comprises methylcyclopentadienyl manganese tricarbonyl.  
     
     
         46 . The method described in  claim 37 , wherein the manganese compound is selected from the following group: cyclopentadienyl manganese tricarbonyl, methylcyclopentadienyl manganese tricarbonyl, dimethylcyclopentadienyl manganese tricarbonyl, trimethylcyclopentadienyl manganese tricarbonyl, tetramethylcyclopentadienyl manganese tricarbonyl, pentamethylcyclopentadienyl manganese tricarbonyl, ethylcyclopentadienyl manganese tricarbonyl, diethylcyclopentadienyl manganese tricarbonyl, propylcyclopentadienyl manganese tricarbonyl, isopropylcyclopentadienyl manganese tricarbonyl, tert-butylcyclopentadienyl manganese tricarbonyl, octylcyclopentadienyl manganese tricarbonyl, dodecylcyclopentadienyl manganese tricarbonyl, ethylmethylcyclopentadienyl manganese tricarbonyl, indenyl manganese tricarbonyl, and the like, including mixtures of two or more such compounds.  
     
     
         47 . The method described in  claim 37 , wherein the combustion byproduct is selected from the group consisting of particulates, soot, unburned soot, uncombusted hydrocarbons, partially-combusted hydrocarbons, combusted hydrocarbons, and oxides of nitrogen.  
     
     
         48 . The method described in  claim 37 , wherein the combustion system further comprises a lean-NO x  storage device.  
     
     
         49 . A method of enhancing the operation of an emissions after treatment system in a fuel combustion system comprising: 
 supplying a fuel comprising an additive that includes a manganese compound to a fuel combustion system,    combusting the fuel in the combustion system to produce at least one byproduct comprising the manganese compound,    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct,    whereby the operation of the emissions after treatment system is enhanced.    
     
     
         50 . The method of  claim 49 , wherein the fuel is selected from the group consisting of gasoline, bunker fuel, coal dust, crude oil, refinery “bottoms” and by-products thereof, crude oil extracts, hazardous wastes, yard trimmings and waste, wood chips and saw dust, agricultural waste or tillage, plastics and other organic waste and/or by-products, and mixtures thereof, and emulsions, suspensions, and dispersions thereof in water, alcohol, or other carrier fluids.  
     
     
         51 . The method of  claim 50 , wherein the fuel comprises gasoline.  
     
     
         52 . The method of  claim 50 , wherein the fuel comprises bunker fuel.  
     
     
         53 . The method of  claim 50 , wherein the fuel comprises coal dust  
     
     
         54 . The method of  claim 50 , wherein the fuel comprises crude oil.  
     
     
         55 . The method of  claim 50 , wherein the fuel comprises agricultural waste.  
     
     
         56 . The method of  claim 50 , wherein the fuel comprises hazardous waste.  
     
     
         57 . The method of  claim 50 , wherein the fuel comprises organic waste.  
     
     
         58 . The method of  claim 50 , wherein the fuel comprises refinery bottoms.  
     
     
         59 . A method of enhancing the operation of an emissions after treatment system in a fuel combustion system comprising: 
 supplying a fuel to a fuel combustion system,    combusting the fuel in the combustion system to produce at least one combustion byproduct in an exhaust stream;    injecting an additive comprising a manganese compound into the exhaust stream;    complexing the manganese compound with the at least one combustion byproduct;    the manganese compound being supplied in an amount effective to complex with the at least one combustion byproduct;    whereby the operation of the after treatment system is enhanced.    
     
     
         60 . The method of  claim 59 , wherein the fuel is selected from the group consisting of gasoline, bunker fuel, coal dust, crude oil, refinery “bottoms” and by-products thereof, crude oil extracts, hazardous wastes, yard trimmings and waste, wood chips and saw dust, agricultural waste or tillage, plastics and other organic waste and/or by-products, and mixtures thereof, and emulsions, suspensions, and dispersions thereof in water, alcohol, or other carrier fluids.  
     
     
         61 . The method of  claim 60 , wherein the fuel comprises gasoline.  
     
     
         62 . The method of  claim 60 , wherein the fuel comprises bunker fuel.  
     
     
         63 . The method of  claim 60 , wherein the fuel comprises coal dust  
     
     
         64 . The method of  claim 60 , wherein the fuel comprises crude oil.  
     
     
         65 . The method of  claim 60 , wherein the fuel comprises agricultural waste.  
     
     
         66 . The method of  claim 60 , wherein the fuel comprises hazardous waste.  
     
     
         67 . The method of  claim 60 , wherein the fuel comprises organic waste.  
     
     
         68 . The method of  claim 60 , wherein the fuel comprises refinery bottoms.