EXHAUST TAIL PIPE INSERT/EMISSIONS FILTER
20210140355 · 2021-05-13
Inventors
Cpc classification
F01N3/022
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/0211
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N13/082
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02A50/20
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F01N3/24
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/023
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/0215
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N2240/05
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Y02T10/12
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
F01N3/0892
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N2410/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/021
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N2450/30
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/031
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
International classification
F01N3/023
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N13/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/021
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/022
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/031
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01N3/08
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Abstract
An exhaust tailpipe/emissions filter employs a reusable/replaceable insert and is configured to slide into and/or onto the exhaust tailpipe of the automobile to reduce air pollution.
Claims
1-13. (canceled)
14. An emissions exhaust filtering system for an exhaust pipe for an on or off-road engine comprising: a plurality of filter sections (sectionals), wherein the plurality of filter sections includes at least one of a ball filter section, a cone filter section, a grid filter section, and a double cone filter section; and a filter cap.
15. The filtering system of claim 14, wherein the plurality of filter sections are interchangeable (re-arrangeable).
16. The filtering system of claim 15, wherein the plurality of filter sections comprise opposing threads.
17. The filtering system of claim 14, wherein at least one of the plurality of filter sections comprises a screen.
18. The filtering system of claim 17, wherein the screen comprises a wash-coat adapted to react to one or more exhaust vapors.
19. The filtering system of claim 14, wherein the plurality of filter sections comprises the ball filter section and the ball filter section includes a ball filter, wherein the ball filter includes a core and an outer layer.
20. The filtering system of claim 19, wherein the outer layer comprises a surface having a plurality of spherically shaped indentions recessed into the outer layer.
21. The filtering system of claim 14, wherein the plurality of filter sections comprises the cone filter section and the cone filter section includes a cone filter, wherein the cone filter includes a filter stack comprising one or more layers to form a gas permeable layer that allows liquid to traverse the cone filter 92 in a single direction.
22. The filtering system of claim 21, wherein the filter stack comprises an inner cone layer, an outer cone layer, and a membrane therebetween.
23. The filtering system of claim 22, wherein at least one of the inner cone layer and the outer cone layer includes a plurality of openings to expose the membrane
24. The filtering system of claim 21, wherein the cone filter section includes a cone filter section outer housing, and the cone filter section outer housing and the cone filter define a void therebetween, and the void includes a chemical & fluid-based mixture containing a biological absorbent.
25. The filtering system of claim 24, wherein the biological absorbent is at least one an algae and/or a nitrogen-fixing bacteria.
26. The filtering system of claim 21, wherein the cone filter includes an upper filter section and a lower filter section and the upper filter section and the lower filter section have different angles with respect to a center axis of the cone filter.
27. The filtering system of claim 14, wherein the plurality of filter sections comprises the grid filter section and the grid filter section includes a plurality of elongated tubes.
28. The filtering system of claim 27, wherein the elongated tubes have a cross sectional shape of a quadrilateral, a square, or a rectangle.
29. The filtering system of claim 27, wherein one or more of the elongated tubes include a wash-coat on an inside of the one or more elongated tubes.
30. The filtering system of claim 14, wherein the plurality of filter sections comprises the double cone filter section and the double cone filter section includes at least one cone set each having an upper cone and a lower cone, each upper cone including an upper cone wide upper end and an upper cone narrow lower end such that the upper cone wide upper end has a larger radius than the upper cone narrow lower end, each lower cone including a lower cone narrow upper end and a lower end wide lower end such that the lower cone wide lower end has a larger radius than the lower cone narrow lower end.
31. The filtering system of claim 30, wherein the double cone filter section further comprises a screen between the upper cone and the lower cone.
32. The filtering system of claim 31, wherein the screen comprises a wash-coat.
33. The filtering system of claim 30, wherein the double cone filter section comprises a plurality of cone sets.
Description
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[0026] Refer now to
[0027] The unique filtering formula of system 10 includes components of reusable and/or disposable, interconnecting (at connection joints 26) and exchangeable sections. Each connecting filter 12, 14, 16, 20 contains its own specialized filtering design, creating different stages, resulting in an effective filtering process.
[0028] The cone filter section 12, also shown in
[0029] The sphere filter section 14, also shown in
[0030] A magnetic filter bubble eye cap with a special absorbent/fabric in each hole 20, also shown in
[0031] The system 10 is shown in
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[0036] With reference to
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[0039] The inner and outer cone layer 94,96 may include a plurality of whole spaced at intervals throughout the cone filter to expose the membrane layer 95. The conically shaped cone filter 92 may include an upper filter section 100 and a lower filter section 102. The upper filter section 100 and the lower filter section 102 may have different angles with respect to the center axis C. For example, the upper filter section 100 may have an angle of θ and the lower filter section 102 may have an angle of co, where, in one example, θ is ≥to φ. The cone filter 92 come generally come to a point, but left open 98 to allow some exhaust gasses to bypass the filter stack 93 in order to allow for sufficient flow rates.
[0040] The filter stack 93 may be extended between the open 98 and the outer housing 91 to form the cone filter base 104. The cone filter base 104, the upper section 100, the lower section 102, and the outer housing 91 together form a void 110 in which exhaust gasses can pass through the filter stack 93 at upper section 100 and lower section 102 into the void 110 and then out of the cone filter base 104. While the void 110 is shown as two parts due to the cross-section view, it should be understood that the void 110 wraps around the cone filter 92. The void 110 may be filled by a chemical & fluid-based mixture 114, which may include an aqueous or non-aqueous solution containing a chemical or biological absorbent 116. For example, the fluid-based mixture 114 may include a combination of water, chemical substance, blue-green algae as the biological absorbent 116 and air or other exhaust gases. For example, the fluid-based mixture 114 may also include sand, ammonia, and or dirt in order to act as a medium for biological absorbent 116. Additional chemical agents may also be included as need to avoid reaching freezing and boiling points, for example, latent heat technology, propylene glycol, and/or sodium carboxymethyl cellulose.
[0041] The biological absorbent 116 may be, for example, a nitrogen-fixing bacteria, such as free living (non-symbiotic bacteria) such as blue green algae (cyanobacteria), anabaena, nostoc, and/or genera such as Azotobacter, Beijerinckia, or Clostridium. The biological absorbent 116 aids in fixing/absorbing the nitrogen-based compounds such as nitrogen oxide (NoX), e.g., NO and NO.sub.2. Additional biological absorbents 116 may include the mutualistic (symbiotic) bacteria rhizobium-associated with leguminous plants, frankia, associated with certain dicotyledonous species (actinorhizal plants), and certain azospirillumspecies, associated with cereal grasses.
[0042] As exhaust gas passed into the upper section 100 of the cone filter 92, a portion of the exhaust gases pass through openings 97 and permeate through membrane layer 95 into the void 110. Membrane layer 95 can be any gas permeable/water vapor semi permeable membrane that allows liquid to travel primarily or only in a single direction. For example, the membrane available from SIGA tapes under the brand name Majrex (1 US Perm===57 ng/Pa.Math.s.Math.m2) or as described in US Pub 2015/0354205 “Variable-Humidity Directional Vapour Barrier,” the entirety of which is incorporated herein by reference. See for example, http://gassystemscorp.com/wp-content/uploads/2015/08/Membrane-Air-Separation.pdf (last Accessed 10/30/2020), the entirety of which is incorporated by reference herein The biological absorbents 116 absorb chemicals from the exhaust. Water from the exhaust is also retained by the biological absorbents 116 in order to keep the biological absorbents 116 hydrated. Treated exhaust may exit through the cone filter base 104 and/or into the lower section 102 of the cone filter 92 for exit from the cone filter section 90.
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[0046] All of the references to foam herein may be, for example, a porous filter medium, for example any of those materials or structures described in US publication 2005/0241479 “Filter materials for absorbing hydrocarbons,” (the '479 publication) the entirety of which is incorporate by reference herein in its entirety. In addition, such foams may also include polymer networks of a foam, nonwoven or collection of particles, which in one example have a butane working capacity (W/W %) of 4.0 percent or higher as described in the '479 publication. The foams discussed herein may be of sufficient thickness to promote reactivity with the exhaust gases, but not so thick to promote clogging. In one example, the foams discussed here are between (inclusive) 0.5 mm-2 mm thick, and in another example, about 1 mm thick.
[0047] A routine maintenance interval for the filtering system may be thirty, sixty, or ninety days, determined by the relevant on or off-road engine including but not limited to automobile's, usage, weather, mileage, oil consumption/maintenance, emissions levels and the filtering component selection. Each filter section and component bay be replaceable with a new or refreshed component and custom designed to fit any/all exhaust systems/tailpipes. The component selection may be super duty formula (commercial/industrial use only), heavy duty formula, mild duty formula, or light duty formula. The disclosed filter system 110 may support the following type of catalytic reactions two-way oxidation, three-way oxidation reduction, and diesels oxidation catalyst (DoC).
[0048] The different stages of the filtering process (formula applied) are also designed to maximize the exhaust tail pipe air flow system, preventing/reducing blockage. In a worst-case scenario, if the filter is over used and needs changing, this will block the air flow, preventing the vehicle from starting until changed/cleaned.
[0049] The filter may be made available in any shape and size and color, for all market applications with emission issues, including but not limited to automotive, trucks, forklifts, mining equipment, electrical generators, locomotives, motorcycles, airplanes, and other engine-fitted devices that release hydrocarbons, including those that run on natural gas, propane, or wood, for example wood stoves, to control emissions. In addition, the various sizes of the components and filtering/catalytic capabilities may be customized based on the size and throughput of various exhaust systems. All filter parts are heat resistant/inflammable, and designed to filter out the emission toxins while increasing the air flow, and maximizing air pressure. For example, the filter materials, including any materials discussed herein as being made from metal, ceramic, or foam may also include ceramic monolith or metallic foil monolith materials which have the advantage of low back pressure and reliability under constant high load. The filler forms may include monolith, fluid-bed and particulate filler forms. Both are designed to provide high surface area to support the catalyst wash coat. Such materials may have particular advantages when used in the grid filter section 115 and double cone filter section 120 in place or in addition to the foam material. Other materials for the housings and filter materials may include, for example copper, steel, stainless steel, chromium, cobalt, nickel, aluminum, titanium, vanadium, cerium, platinum, gold, palladium, titanium dioxide, aluminum oxide, silicon dioxide, or combination of silica and aluminum, cerium iron, nickel, and manganese, either individually or in combination with each other in alloys or otherwise.
[0050] Additionally, other materials for the housings and filter materials may include materials such as Foil, Iron, aluminum, Chromium, Steel, Titanium, Copper, Intumescent, Platinum (PT), Gold, Palladium (Pd), Rhodium (Rh), Ceramic, Cerium, Vanadium, Manganese, Nickel, Cabolt, Chromium, Clay, ammonia (Nh3), Aluminosilicate, Alumina (Al.sub.2O.sub.3), Zirconia, CEo2, Sio2, Titania (Tio2), Snot, CuO, Fe2o3, La2o3, MgO, Water, Blue Green Algae, Heptane & Toluene-Hydrocarbons (HC), Phased Change Materials (PCM) such as stone-cast iron & aluminum, Dry Ice, petrogels, hydrogels, polymer absorbent/polyolefin based hydrophobic absorbents, Alaska Crude Oil (ANS), Tantalum Carbide (TaC), Hafnium Carbide (HfC), hafnium Carbide, Hydrogen (H2o), Carbonic Acid/Dry Ice (H2Co3), montmorillonite, zeolites, carbon based materials, Silica Fabric, Fiberglass, Plexiglass. WHIPDX: The oxide CMC WHIPDX (Wound Highly Porous Oxide Ceramic Matrix Composite) has been developed at the Institute of Materials Research. WHIPDX consists of continuous oxide fibers which are embedded in a porous oxide matrix. Compared to non-oxide materials WHIPDX-type CMC exhibits excellent durability in oxidizing atmospheres. Components are manufactured by a relatively simple, cost-efficient filament winding process. Oxide-based ceramic matrix composites (CMC) are developed at the Institute of Materials Research and meet these requirements. Outstanding properties of oxide-based CMC include: high resistance against thermal load and thermal cycling, damage tolerance and non-brittle fracture behavior, full resistance against oxidation and good resistance in many corrosive environments, low specific weight and heat capacity, transparency for electromagnetic waves, and electrical insulation.
[0051] Filter materials for reduction of CO2 may also include absorbent agents applied within a filter to assist in the elimination of Carbon and CO2, including, for example, sodium hydroxide, potassium hydroxide, and lithium hydroxide.
[0052] Further the disclosed components, may include intumescent coating/insulant & thermal and/or environmental barrier coatings (E/TBC) to helps avoid metal sticking/welding of filter and filter components and to provide protection from hot corrosion, chemical degradation from hot water vapor, and thermal overload. Fiber-reinforced ceramic composites may also be utilized for disclosed components, which often exhibit a pronounced porosity and permeability. Their fabrication also produces irregular structures, i.e., rough surface structures than can be advantageous to the overall filtering effect. Protection can also be applied to the threads of filters, around the top and bottom (or entire) surface area of filters where they make contact, the internal contact points of cap & sleeve.
[0053] The Appendix includes additional information, which is herein incorporated by reference in its entirety.