Device for provision of liquid reducing agent with particles separation screen

FIELD: gas industry.

SUBSTANCE: invention relates to exhaust gas cleaning devices. Liquid reducing agent (15) supply device (1) has tank (2) with inner space (3) and vessel (4) at least partially located in tank (2) inner space (3). From outside vessel (4) is, at least, partially surrounded by particles separation screen (5) made with possibility of flow passage. In vessel (4) there is a supply device (8), which is made to supply reducing agent (15) from tank (2) through particles separation screen (5), and then to reducing agent (15) injection point (9).

EFFECT: using invention creates possibility of creation of screen, which clogging can be prevented for a long period of time due to self-cleaning effect, due to metal design screen itself can be used as heater.

10 cl, 13 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention relates to batching of reducing agent to ICE exhaust gases. Proposed process of batching the urea-based reducing agent to used gas flow fed to directed to cleaning system 30 comprises provision of batching module with batching housing 20 extending in axis X. Said offgas flow is fed to said batching housing 20 by forming a circular inlet jet AJ inclined relative to said axis X of said housing 20. Said reducing agent is batched by producing a sprayed urea-based reducing agent jet UWS inside said housing 20. Offgas flow is fed into said housing 20 by making an axially symmetric circular inlet jet AJ inclined to said axis X of said housing 20.

EFFECT: complete decomposition of urea, uniform mixing of ammonia with offgas.

9 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to device for feed of reducing agent from tank to used gas cleaner. Device (1) for feed of reducing agent from tank (2) to used gas cleaner (3) for ICE (4) used gas neutralisation. Said device (1) has flange (8) confined by at least first side (10) and second side (11). Said sides (10) and (11) are arranged in mutual opposition. Filter (12) and ice pressure compensation displacing means (13) and/or ice pressure flexible compensation means (14) is/are arranged at said first side (10). Pump (15), pressure gage (16) and/or temperature gage (17) is/are arranged at second side (11).

EFFECT: higher reliability and frost resistance.

6 cl, (16 dwg

FIELD: heating.

SUBSTANCE: invention relates to SCR system for exhaust gases cleaning. The cooling method of the dosing unit (250) of the reducing agent after flow termination of the exhaust gases is performed by the reducing agent supplied in it. Method also contains work stage of the supply unit to feed the specified cooling reducing agent with power decreased in comparison with operation under standard mode. Invention also relates to software with program code (P) for computer (200; 210) to implement the method according to the invention. Besides, the invention relates to SCR system and mechanical transportation vehicle equipped with SCR system.

EFFECT: more effective cooling of the dosing unit of SCR system after flow termination of the exhaust gases in SCR system.

17 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to reduction of diesel emissions. Diesel afterpurification system comprises diesel with exhaust manifold and filter substrate directly connected with exhaust manifold without whatever mid catalysts. Filter substrate inlet side includes selective catalytic reduction catalyst SCR including non-caking molecular sieve.

EFFECT: better filter recovery.

23 cl

Exhaust gas cleaner // 2553480

FIELD: engines and pumps.

SUBSTANCE: invention relates to automotive industry and can be used for purification of ICE exhaust gases. Proposed cleaner 1 incorporates exhaust gas removal component 3 of flow-through design in flow direction from oncoming flow side 4 to drain flow side 5. Reducing agent feed device 6 is arranged downstream of drain flow side 5 to feed said agent to sais cleaner 1. Said device 6 features feed direction 7 extending, at least partially, across flow direction 3. Drain flow side 4 of said component 2 is coated, at least partially, with porous ply 8. Said device 6 and said component 2 are spaced apart for distance 9 selected to make reducing agent 10 reach said porous ply 8. Said porous ply 8 includes metallic fabric or metallic nonwoven material. Invention discloses vehicle with ICE including said cleaner 1.

EFFECT: simplified mounting, improved distribution of reducing agent over flow cross-section.

10 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed process uses the transducer signal of measurement of parameter relates to nitrogen oxides (NOx) in exhaust gases flowing from exhaust gas afterpurification device. The latter makes a part of exhaust gas afterpurification system to detect the amplitudes of transducer signal of measurements performed in a definite period of measurements and to add the reducing agent to exhaust gases in afterpurification device. Additionally, this process comprises the steps that follow. Added amount of reducing agent is varied in compliance with preset mode for measurement period. NOx content variation amplitude is detected downstream of exhaust gas afterpurification device. Detection and preservation of added amounts of reducing agent when NOx amplitude variations revealed in exhaust gases downstream of afterpurification device are carried out if these satisfy the criteria of optimum adjustment of added quantity. Besides, this invention relates to exhaust gas afterpurification system.

EFFECT: optimised operation of catalytic neutraliser.

25 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention relates to the device for spent gases treatment in the output pipeline. Design (1) contains two devices (2, 3) installed one after another to clean the spent gas in the output pipeline (4). The first device (2) for the spent gas cleaning by the first partial area (5) via the at least one support element (6) is connected with the second partial area (7) of the second device (3) for spent gas cleaning. The support element (6) has opposite ends (9) and at ends (9) via the connecting points (8) is connected to the one partial area (5, 7), respectively. The second partial area (7) is created by metal components (10), that by means mutual contact create the contact surfaces (11). Maximum 20% of area of the contact surfaces (11) have at least soldered connections (12) or diffusion connections (13).

EFFECT: resistance to increased mechanical requirements during operation.

9 cl, 7 dwg

FIELD: transport.

SUBSTANCE: invention relates to method relevant to SCR systems for exhaust gases purification. The method relevant to SCR systems for exhaust gases purification includes following two phases: phase of making decision concerning necessity (exhaust gases flow termination) to cool reducing agent batching module (250) which is a part of SCR system by means of reducing agent being supplied to the module, and phase of prediction of temperature profile of the mentioned batching module (250) as the basis for making decision concerning mentioned necessity and proper prediction of weather predetermined temperature of batching module (250) is achieved after exhaust gases flow termination or not. Also, the proposed invention relates to computer software product containing program code (P) for computer (200; 210) designed for implementation of the method according to the invention. Besides, invention relates to SCR system and vehicle equipped with such SCR system.

EFFECT: higher efficiency of SCR system and lower risk of batching module overheating in SCR system after exhaust gases flow termination.

19 cl, 6 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to fluid medium containers equipped with resistive elements. A container for content of certain amount of fluid medium in a tank. The above said container is provided with the first resistive element (R1) intended for heating of the first part of the above said tank and the second resistive element (R2) intended for heating of the second part of the above said tank. The above said second resistive element has a positive temperature coefficient. The above container also includes the third resistive element (R3) intended for heating of the above said second part of the specified tank. The above said second resistive element and the above said first resistive element form a parallel circuit, and the above said first resistive element is connected in series to the specified parallel circuit. The invention also describes a fluid medium tank for a transport vehicle, which contains a container, and use of circuits in the fluid medium tank for the transport vehicle.

EFFECT: addition of a freedom degree to the design, which provides the amount of energy, which dissipates in different parts of the tank.

9 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to device to feed liquid reducer into exhaust gas neutralisation system. Proposed device (1) has tank (2) with inner chamber (3) and at least container (4) partially fitted in the tank (2) inner chamber (3). Container (4) outside is surrounded, at least, partially by filter (5) with filter area (6) and filter depth (7) while container (4) accommodates system (8) to feed reducer from tank (2) via filter (5) to reducer intake point (9). Reducer in tank (2) flows through filter (5) before getting inside tank (4), mainly before flowing through intake hole (16) into feed system (8). Invention covers also the carrier with such device (1).

EFFECT: higher reliability.

9 cl, 9 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention can be used in engine exhaust system. Proposed device for processing of exhaust gases by selective catalytic reduction of nitrogen oxides in exhaust gases formed when engine operates on lean mixtures includes at least one catalyst with catalytically active component for selective catalytic reduction (components for scr) and at least one accumulating component for nitrogen oxides (components for NO). Device contains also oxidizing catalyst arranged before selective catalytic reduction catalyst and accumulating component for nitrogen oxides is at least one compound of element chosen from row including alkaline metals, alkaline-earth metals and cerium. Method of removal of nitrogen oxides from exhaust gases is provided.

EFFECT: reduced concentration of nitrogen oxides in exhaust gases formed at operation on lean mixtures.

18 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: proposed inventions can be used in exhaust systems and covers the method and device to adjust adding reducer at the point upstream higher than that the catalyst is located in the ICE exhaust manifold at. In compliance with the proposed invention, the reducer addition into inlet pipeline is adjusted subject to the results of comparison between the actual calculated accumulated amount (A1) and calculated preset accumulated amount (A2). The invention covers also a computer hardware unit incorporating a data carrier adapted for reading off by an electronic control unit and store computer program therein designed to force the said control unit to realise aforesaid method.

EFFECT: efficient method and device to adjust adding reducer at point upstream higher than that catalyst is located in ICE exhaust manifold at.

25 cl, 9 dwg

FIELD: engines and pumps.

SUBSTANCE: Mixing device preferably comprises inlet urea channel and inlet gas channel for supply of accordingly urea and gas into mixing chamber of mixing device and outlet channel for discharge of urea and gas mixture from mixing chamber, at that these inlet channels and outlet channel may preferably be extended to the side of flow and preferably pass into mixing chamber, and outlet channel preferably starts from mixing chamber. Device comprises valve in inlet channel that provides for removal of crystals on channel surfaces, at that valve is arranged with the possibility to execute reciprocal motion. Valve comprises piston with spring facility and flat element with opening.

EFFECT: such arrangement reduces deposit of urea crystals on surfaces of inlet channel.

22 cl, 16 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in ICE exhaust systems. Proposed assembly serves to admix liquid reducer into waste gas flow and comprises proportioning pump (2). Inlet of aforesaid pump is furnished with element connecting it to reducer tank (4), while pump outlet is connected with pressure line (16). Return line (10) connects pump outlet with aforesaid reducer tank (4). Pressure tank (16) accommodates check valve (20) to response to fluid medium pressure generated by proportioning pump (2). Return line (10) communicates with pressure line (16) and accommodates shut-off valve (12) to shut off return line selectively.

EFFECT: simplified design.

13 cl, 7 dwg

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive industry. Proposed device comprises controller to shift automatic gearbox completely in neutral. Proposed method consists in that forced gearbox shifting in neutral is carried out provided preset conditions are satisfied. Note here that said conditions comprise verifying automatic gearbox completely automatic gearshift position. Catalytic neutraliser temperature is increased when amount of exhaust particles accumulated in catalytic neutraliser exceeds first threshold value. If, in regulation of catalytic neutraliser heating, the amount of exhaust particles accumulated in said neutraliser exceeds second threshold value, forced shifting of automatic gearbox into completely neutral is inhibited.

EFFECT: recovery of efficient operation of catalytic neutraliser and fuel saving.

14 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed ICE exhaust gas purifier is designed as SOx catalyst-trap to entrap sulphur oxides of exhaust gases in the engine exhaust pipe. One of alkaline and alkali-earth metals is diffused into catalyst-trap. In engine operation, keeping the SOx catalyst-trap temperature, whereat nitrate of at least one of alkaline and alkali-earth metals changes into molten state, stimulates nitrate displacement and its coagulation effect. Note here that nitrate in SOx catalyst-trap displaces and coagulates on SOx catalyst-trap surface to remove SOx, and, at the same time, to recover the degree of SOx entrapping.

EFFECT: higher degree of SOx entrapping.

24 cl, 23 dwg

FIELD: chemistry.

SUBSTANCE: method of decomposing nitrogen dioxide (NO2) to nitrogen monoxide (NO) in the exhaust gas of an internal combustion engine working on a rare fuel mixture involves a stage for bringing into contact with an acidic metal oxide selected from a group consisting of zeolites, titanium dioxide doped with tungsten, silica-titanium dioxide, zirconium dioxide-titanium dioxide, gamma-alumina, amorphous silica-alumina and a mixture of any two or more of these oxides, which optionally serve as a carrier for metal or metal compound, where the metal is selected from a group consisting of rhodium, palladium, iron, copper and mixtures of any two or more metals, with a gaseous mixture containing exhaust gas, control of composition of the gaseous mixture, injection of hydrocarbons into the gaseous mixture at a rate which varies during the operation cycle such that on average, the ratio Cl hydrocarbon: nitrogen oxides (CI HC:NOx) of the gaseous mixture in contact with the acidic metal oxide ranges from 0.1 to 1.5 and release of the exhaust gas directly into the atmosphere, optionally after the gaseous mixture comes into contact with a hydrocarbon oxidation catalyst, where the hydrocarbons are selected from a group consisting of diesel fuel, petrol, fuel based on liquefied gas and liquefied petroleum gas. The exhaust system for the internal combustion engine working on a rare fuel mixture, which contains a catalyst for decomposition of nitrogen dioxide (NO2) to nitrogen monoxide (NO) with a hydrocarbon as a reducing agent, and apparatus for controlling composition of the exhaust gas by injecting a hydrocarbon at a rate which varies during the operation cycle such that on average, the ratio Cl hydrocarbon: nitrogen oxides (CI HC:NOx) in the exhaust gas in contact with the catalyst ranges from 0.1 to 1.5, in which the catalyst consists of an acidic metal oxide selected from a group consisting of zeolites, titanium dioxide doped with tungsten, silica-titanium dioxide, zirconium dioxide-titanium dioxide, gamma-alumina, amorphous silica-alumina and a mixture of any two or more oxides, which optionally serve as a carrier for the metal or metal compound. The metal is selected from a group consisting of rhodium, palladium, iron, copper and mixtures of any two or more metals, in which gas released from the catalyst is directly released into the atmosphere optionally through a hydrocarbon oxidation catalyst. Hydrocarbons are selected from a group consisting diesel fuel, petrol, fuel based on liquefied gas and liquid petroleum gas. The device has a diesel engine and the above described exhaust system features. A carriage vehicle, such as one used in mines, has the above described device.

EFFECT: invention reduces exhaust gas emissions into the atmosphere in confined spaces in order to improve health and safety of miners.

41 cl, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst for cleaning exhaust gases, a method of regenerating such a catalyst, as well as a device and a method of cleaning exhaust gases using the said catalyst. The invention describes a catalyst for cleaning exhaust gases where a noble metal is attached to a metal oxide support. In an oxidative atmosphere, the noble metal on the surface of the support is in a high oxidation state and the noble metal is bonded to the cation of the support though an oxygen atom on the surface of the support with formation of a surface oxide layer. In a reductive atmosphere, the noble metal on the surface of the support is metallic state and the amount of noble metal open on the surface of the support, measured through CO chemisorption, is equal to or greater than 10 at % of the total amount of noble metal attached to the support. Described is a method of regenerating a catalyst for cleaning exhaust gases in which the above described catalyst for cleaning exhaust gases undergoes oxidative treatment by heating in an oxidative atmosphere which contains oxygen, and reduction treatment. Described also are devices for cleaning exhaust gases (versions) and a method of cleaning exhaust gases, involving cleaning exhaust gases by bringing the exhaust gases into contact with the above described catalyst.

EFFECT: prevention of reduction of catalyst activity.

18 cl, 11 tbl, 46 ex, 10 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to method of reactivating thermally aged catalytic neutralisers-accumulators of nitrogen oxides containing compounds accumulating nitrogen oxides on carrier material containing cerium oxide. Invention covers the method of reactivating thermally aged catalytic neutraliser-accumulator of nitrogen oxide that comprises main compounds of strontium or barium, or both, on carrier material containing cerium oxide and contains compounds of strontium and/or barium formed due to thermal ageing with carrier material. Note here that compounds of strontium and/or barium with carrier material are decomposed by treating them with gas mix at 300C to 500C, said gas mix containing nitrogen oxide in amount of 0.05 to 5 % by volume, water steam in amount of 5 to 15 % by volume and carbon dioxide in amount of 0 to 20 % by volume. Proposed method (version) comprises dismantling, during scheduled servicing, of catalytic neutraliser-accumulator of nitrogen oxides that makes an integral part of exhaust system incorporated with vehicle driven by engine running on depleted fuel and treatment for 0.1 to 5 h by gas mix containing nitrogen oxides in amount of 35 % by volume, oxygen in amount of 5 to 50% by volume, water steam in amount of 5 to 30 % by volume, carbon dioxide in amount of 0 to 20 % by volume, and, not obligatorily, nitrogen in amount of approximating to 100 % by volume.

EFFECT: partial reactivation of catalytic neutraliser-accumulator of nitrogen oxides after its thermal damage.

8 cl, 3 ex, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises tank, receiver (spraying nozzle), continuous flow device incorporating meter, controlled shut-off valve arranged upstream of said receiver and downstream of continuous flow device shut-off valve control device that performs control functions in PDM mode.

EFFECT: accurate proportioning.

34 cl, 13 dwg

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