Patent ID: 6606856
Filing Date: 2003-08-19
Classification: B01D,B01J,F01N,Y02C

Abstract:
A process for reducing the level of pollutants in the exhaust of a diesel engine, comprising:operating said diesel engine using as the fuel a water diesel fuel emulsion; the water-diesel fuel emulsion comprising water, diesel fuel and an emulsifier, the emulsifier comprising: (i) at least one fuel-soluble product made by reacting at least one hydrocarbyl substituted carboxylic acid acylating agent with ammonia or an amine, the hydrocarbyl substituent of said acylating agent having about 50 to about 500 carbon atoms; (ii) an ionic or a nonionic compound having a hydrophilic-lipophilic balance of about 1 to about 10; or a mixture of (i) and (ii); in combination with (iii) an emulsion stabilizing amount of a water-soluble compound selected from the group consisting of amine salts, ammonium salts, azide compounds, nitro compounds, alkali metal salts, alkaline earth metal salts, and mixtures of two or more thereof; and contacting the exhaust from said diesel engine with an oxidation catalyst, the oxidation catalyst being in the form of a flow-through cellular monolith.