Emulsified water fuel blend containing an aqueous organic ammonium salt

Abstract

The invention relates to an emulsified water fuel blend containing aqueous organic ammonium salts. The emulsified water fuel blend lowers nitrogen oxide emissions from engines.

We claim:  
     
         1 . An emulsified fuel composition comprising water, fuel, at least one emulsifier, and at least one aqueous organic ammonia salt resutling in a water and fuel emulsion.  
     
     
         2 . The composition of  claim 1 , wherein the organic ammonium salt is selected from a group comprising  
       
         
           
           
               
               
           
         
       
       in which R 1 , R 2 , R 3  and R 4  are identical or different and independently of one another are hydrogen; or an organic substitute having up to 18 C atoms which is bonded via a C—N bond; or a saturated or unsaturated alkyl group, aryl group, or saturated or unsaturated alkyl group, aryl group substituted with a heteroatom selected from the group comprising N, O, S, P, and a halogen atoms, where R averages from about 4 to about 20 carbon atoms, preferably from about 7 to about 12 carbon atoms; or at least one of the radicals R 1 , R 2 , R 3  and R 4  being other than hydrogen and X n−  being an anion of an inorganic or organic n-basic acid, and n being 1, 2, or 3.  
     
     
         3 . The fuel composition of  claim 1  wherein X n−  is selected from the group comprising anions whose conjugate acid of the formula H n X has a pka<10; halogen atoms; and combinations thereof.  
     
     
         4 . The composition of  claim 3  wherein the X n−  is selected from the group comprising chlorine, bromine, and anion of a protic acid, carboxylic acids, perchloric acid, carbonic acid, and mixtures thereof.  
     
     
         5 . The composition of  claim 1  wherein the organic ammonium salts is selected from the group comprising hydroxides, sulfates, sulfites, paratoluenesulfonates, nitrates, acetates, tetramehl ammonium, halids of tetramethylammonium, sulfates of ammonia, nitrates of ammonia, acetates of ammonia, halides of ammonia, N,N-dimethyloctylammonium chloride, N, N-dimethyldecylammoniumchloride, ammonium alkanoates (typically C.sub.1 to C.sub.20), alkylammonium compounds having 1 to 6 carbon atoms, ammonium benzoates, ammonium sulfonates, ammonium phosphonates, ammonium chlorates, ammonium salts of other aromatic or heteroaromatic carboxylic acids and combinations thereof.  
     
     
         6 . The composition of  claim 2  wherein the organic ammonium salts are selected from the group comprising primary organic ammonium salts such as stearlammonium acetate, oleylammonium acetate, tallow fatty amine acetate, coconum fatty amine oleate, coconut fatty amine acetate, tallow fatty propylenediaminoacetate and combinations thereof; 
 secondary organic ammonium salts such as dialkylammonium chlorides;  
 tertiary organic ammonium salts such as cetyidimethylammonium chloride. oleyldimethylammonium chloride;  
 quaternary organic ammonium salts such as hexadecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, soya alkyltrimethylammonium chloride, coconut alkyldimethylbenzylammonium chloride, coconut alkyldimethylbenzylammonium chloride, coconut alkyl-2, 4-dichlorobenzldimethylammonium chloride, stearyldimethylbenzylammonium chloride, di-coconut alkyldimethylammonium chloride, disteryldimethylammoniumchloride, quaternary dialkylammonium chloride, di-tallow fatty alkyldimethylammonium chloride, alkyltrimethylammononium chlorides, distearyldimethylammonium chloride, didecylmethylpolyoxyethylammonium propionate, di-fatty acid dimethylammonium chlorides, benzyltrimethylammonium chlorides and combinations thereof.  
 
     
     
         7 . The composition of  claim 1  wherein the organic ammonium salts are in the range of 0.1% to about 35% by weight of the emulsified fuel.  
     
     
         8 . The composition of  claim 1  wherein the aqueous organic ammonium salts are in the range of about 0.5% to about 10% by weight of emulsified fuel.  
     
     
         9 . The composition of  claim 1  comprising other additives selected from the group comprising cetane improvers, organic solvents, antifreeze agents, dies, rust inhibitors, alkylated succinic acids and anhydrides, bacteriostatic agents, gum inhibitors, metal deactivators, upper cylinder lubricants, alcohols, antifreeze agents, and combinations thereof.  
     
     
         10 . The composition of  claim 1 , wherein the fuel phase is a continuous phase and the aqueous phase is a discontinuous phase and wherein the water phase is comprised of droplets having a mean droplet of 1.0 micron or less.  
     
     
         11 . A process to make an emulsified fuel comprising emulsifying a fuel, a water, at least one emulsifier and at least aqueous organic ammonium salt resulting in a water and fuel emulsion.  
     
     
         12 . The process of  claim 11  to produce an emulsified fuel from a concentrate that is formed from all or substantially all the water, all or substantially all organic ammonium salt, and a portion of the fuel and all or substantially all the emulsifier which is then blended to form a concentrate and then the concentrate is later blended with the rest of the portion of fuel.  
     
     
         13 . The process of  claim 13  wherein the emulsifier is selected from the group consisting of 
 (i) at least one fuel-soluble product made by reacting at least one hydrocarbyl-substituted carboxylic acid acylating agent with ammonia or an amine including but not limited to alkanol amine, hydroxy amine, and the like, the hydrocarbyl substituent of said acylating agent having about 50 to about 500 carbon atoms;  
 (ii) a second acylating agent having at least one hydrocarbyl substituents of up to about 40 carbon atoms, and reacting that said acylating agent with ammonia or an amine.  
 (iii) at least one of an ionic or a nonionic compound having a hydrophilic-lipophilic balance (HLB) of about 1 to about 40;  
 (iv) mixture of (ii) or (iii) with (i) or a mixture of (i), (ii), and (iii);  
 (v) a water-soluble compound selected from the group consisting of amine salts, ammonium salts, azide compounds, nitrate esters, nitramine, nitrocompounds, alkali metal salts, alkaline earth metal salts, in combination with (i), (ii), (iii), (v), (vii) or combinations thereof;  
 (vi) the reaction product of polyacidic polymer with at least one fuel soluble product made by reacting at least one hydrocarbyl-substituted carboxylic acid acylating agent with ammonia, an amine, a polyamine, an alkanol amine or hydroxy amines;  
 (vii) an amino alkylphenol which is made by reacting an alkylphenol, an aldehyde and an amine resulting in an amino alkylphenol, or  
 (viii) the combination of (i), (ii), (iii), (iv), (vi), (vii) or combinations thereof.  
 
     
     
         14 . The process of  claim 11 , wherein an additional additives selected from a group comprising cetane improvers, dies, rust inhibitors, alkylated succinic acids and anhydrides, bacteriostatic agents, gum inhibitors, metal deactivators, upper cylinder lubricants, alcohols, antifreeze agents, and combinations thereof.  
     
     
         15 . The process of  claim 11 , wherein the emulsified fuel has a concentration of fuel at about 50% to about 95% by weight, water is in the range of about 1% to about 50% by weight, the emulsifier is in the range of about 0.01% to about 20% by weight and additional additives are in the range of about 0% to 10% by weight by weight of the emulsified fuel.  
     
     
         16 . The process of  claim 11 , wherein the emulsified fuel has a concentration of fuel at about 60% to about 95% by weight, water is in the range of about 5% to about 40% by weight, the emulsifier is in the range of about 0.05% to about 10% by weight and additional additives are in the range of about 0.1% to 10% by weight of the emusified fuel.  
     
     
         17 . The composition of  claim 1  used to reduce NOx emissions in engines.  
     
     
         18 . An emulsified water and fuel composition that employs a fuel, a water, at least one emulsifier and at least one aqueous organic ammonium salt to reduce NOx emission in engines.  
     
     
         19 . An emulsified water and fuel composition that employs a fuel, a water, at least one emulsifier and at least one aqueous organic ammonium salt used in conjunction with after treatment devices on engines.