Patent
Process for the reduction of the ignition temperature of diesel soot
Edwin H. Homeier,George C. Joy +1 more
Reads0
Chats0
TLDR
In this paper, a process for reducing the ignition temperature of diesel soot is described, which involves contacting a hot exhaust from a diesel engine, which exhaust contains diesel soots, with a catalytic composite, which comprises a particulate filter coated with a sulfur resistant refractory inorganic oxide selected from the group consisting of titania, zirconia, silica, and silica-alumina.Abstract:
This invention relates to a process for reducing the ignition temperature of diesel soot. The process comprises contacting a hot exhaust from a diesel engine, which exhaust contains diesel soot, with a catalytic composite. The composite comprises a particulate filter coated with a sulfur resistant refractory inorganic oxide selected from the group consisting of titania, zirconia, silica, silica-alumina and alumina which has been treated to be sulfur resistant, i.e. alumina treated with titania, zirconia, tungsten oxide, etc. This coated ceramic trap has deposited thereon at least one catalytic element or compound selected from the group consisting of Pt, Pd, and Rh.read more
Citations
More filters
Patent
Treatment of diesel exhaust gas
TL;DR: In this paper, a process where diesel exhaust gas is passed through a filter to remove particulate therefrom before discharge and particulate deposited on the filter is combusted, the improvement which comprises combusting the particulate with a gas containing NO₂ which may be catalytically generated in the exhaust system is described.
Patent
Zeolite-containing oxidation catalyst and method of use
TL;DR: In this paper, a method to treat diesel engine exhaust by contacting the hot exhaust with the catalyst composition to promote the oxidation of gas-phase CO and HC and of the volatile organic fraction component of particulates in the exhaust.
Patent
Nonwoven composites and related products and methods
TL;DR: In this article, the authors present an improved substrate for removing and/or eliminating pollutants from the exhaust of combustion engines, such as diesel particulate trap (DPT) and diesel catalytic converter (CC).
Patent
Ammonia scr catalyst and method of using the catalyst
TL;DR: In this paper, a SCR-based DPF with an SCR catalyst and a method for selectively reducing nitrogen oxides with ammonia, filtering particulates, and reducing the ignition temperature of soot on a DPF are provided.
Patent
Catalytic destruction of organohalogen compounds
TL;DR: In this paper, the authors describe a process using a catalyst to convert or destroy organic compounds including organohalogen compounds, at a temperature of about 200° to about 500° C. with the catalyst described above in the presence of an oxidizing agent and water.
References
More filters
Patent
Diesel particulate trap
TL;DR: In this paper, a honeycomb filter with thin porous walls defining cells extending therethrough, with the transverse cross-sectional shapes of the cells forming a repeating pattern of geometric shapes without interior corner angles of less than 30°, is presented.
Patent
Process and catalyst for the reduction of the ignition temperature of diesel soot filtered out of the exhaust gas of diesel engines
TL;DR: In this paper, a method for reducing the ignition temperature of Diesel engines by passing the exhaust gas over a catalytically active substance, which is selected from lithium oxide, copper chloride, vanadium oxide/alkali metal oxide combinations, a vanadate of an alkali metal or of cerium, or a silver or alkaline metal perrhenate, preferably of sodium or silver, or mixtures of these substances.
Patent
Ceramic honeycomb filter
TL;DR: In this article, the authors proposed a ceramic honeycomb filter with a multiplicity of parallel channels extending therethrough, selected channels being sealed at one ends thereof by sealing material, while the remainder of the channels were sealed at opposite ends of the filters by said sealing material in such a manner that, as dust-containing gas flows therethrough from one ends to said opposite ends, the gas passes through walls between adjacent channels where the dust particles are collected.
Patent
Wall-flow monolith filter
Dean C. Hammond,Paul T Vickers +1 more
TL;DR: In this article, a diesel particulate trap comprising a ceramic monolith filter having inlet channels of decreasing cross-sectional flow area and increasing wall thickness relative to the distance from the inlet end to the outlet end of the filter is presented.
Patent
Catalyst for purifying exhaust gases and method for manufacturing same
TL;DR: In this article, a method of making a catalyst is also disclosed in which titanium oxide is applied on the surface of a solid mass of calcium aluminate and incorporated in the carrier.