161 results about "Soot particles" patented technology

The invention relates to the technical field of filtering devices, and discloses a dust filtering device for thermal power generation waste gas treatment, which comprises a base, a bracket is arranged at the top of the base, a dust removal mechanism is arranged at the top of the bracket, an air pipe fixedly communicates with the top of the dust removal mechanism, and a dust collection bin is fixedly connected to the bottom of the dust removal mechanism. A liquid spraying device is fixedly arranged at the top of the base, a stirring mechanism is arranged in the liquid spraying device, the front face of the liquid spraying device is communicated with a waste material box, an exhaust pipe is fixedly communicated with the top of the waste material box, and the dust removal mechanism comprises a tank body, an air inlet, a material guide plate, an impeller, a scraping plate, an activated carbon filter plate and an air outlet pipe. According to the present invention, with the device, the problem that the treatment efficiency is reduced due to the influence on the gas output due to the blockage of the activated carbon filtration plate due to the excessive accumulation of the smoke dust particles can be effectively prevented, the service life of the activated carbon filtration plate is effectively prolonged, the replacement frequency is reduced, and the maintenance cost is reduced.

A glass substrate including a silica-based glass, the silica-based glass includes silica and from 0 wt. % to 15 wt. % titania. A first portion of the silica-based glass has a height of 1.0 mm and a first cross-section having an area greater than or equal to 50.0 cm2. A first sub-portion of the first portion has a height of 1.0 mm, a length of 40.0 mm, a width of 40.0 mm, and a second cross-section. A peak-to-valley difference of a hydroxyl group concentration of the first sub-portion is less than or equal to 15 ppm, as measured at the second cross-section. A method of forming a glass substrate includes heating a molded precursor mass. The molded precursor mass includes soot particles. The heating includes exposing the molded precursor mass to a consolidation environment containing steam, and maintaining the molded precursor mass in the consolidation environment while reducing the consolidation temperature.

The invention relates to the technical field of generators, in particular to a power take-off generator for a vehicle-mounted power generation system, which comprises a generator housing, a front end cover and a tail end cover, the front end cover and the tail end cover are respectively mounted at two ends of the generator housing, an annular gland is fixedly arranged on the front end cover, and a counterweight ring is arranged between the front end cover and the annular gland in a limiting manner; supporting springs are arranged on the outer side of the balance weight ring and evenly distributed in a circumferential array mode. The generator is normally used when the generator stably runs on a paved road surface, extra power consumption is not needed when smoke particles are generated on a non-paved road surface and a vehicle jolts, the interior of the shell of the generator can be automatically in a positive pressure state through structural arrangement, and the protection performance is improved.

The invention discloses cutting equipment with a synchronous dust removal function for a building steel structure, and relates to the technical field of cutting equipment. In the cutting dust removal process, smoke dust at the cutting position is pumped through an air pump, smoke dust diffusion is avoided, but in the air pumping process, particles in the smoke dust are prone to blocking a pipeline, and consequently the dust discharging effect is reduced, the conical appearance of a conical barrel is matched with a filter cylinder in the filtering process, and a gap is gradually increased from bottom to top; the air flow speed during filtering is increased, the blocked smoke particles continue to be driven by air to surge upwards, the blocked smoke particles are driven by the air to be matched with the cambered surface of the cambered surface disc, the smoke particles are guided into the gap between the conical cylinder and the air guide cylinder to be collected, and during cutting, dust removal is conducted on the smoke synchronously. And meanwhile, smoke particles are blocked and collected, and the situation that the dust removal effect is reduced due to the fact that a gas circulation pipeline is blocked in the dust removal process is avoided.

The invention relates to the technical field of engines, in particular to a cold start control method, device and equipment of an engine and a medium. The method comprises the steps that when an engine is in a power-on state, the starter is started, and the water temperature value of the engine is obtained; if the water temperature value of the engine is smaller than the preset water temperature threshold value, starting parameter values of starting parameters of the engine in the current operation environment are obtained; determining a reference dragging duration corresponding to the starting parameter value based on a preset mapping relation between the starting parameter value and the dragging duration; determining a target dragging duration according to a reference dragging duration corresponding to the starting parameter value; the dragging duration of the starter is monitored, when the dragging duration of the starter reaches the target dragging duration, the oil injector is controlled to inject oil into the air cylinder, and the state in the air cylinder is monitored; and when compression ignition occurs in the air cylinder, the engine is controlled to enter a running state, so that cold start control is conducted on the engine in the low-temperature and plateau environment, and soot particles accumulated in the DPF are reduced.

The invention relates to a method for determining the degree of aging (Γ) of lubricating oil during operation of an internal combustion engine, wherein - an ageing model (100) is created which outputs specific ageing factors (Σ) as input variables based on operating parameters (Ψ) of the internal combustion engine, wherein the ageing factors (Σ) represent at least the following ageing causes: • Entry of fuel, • Entry of water, • Entry of soot particles, • chemical aging during engine operation, and • chemical aging when the engine is not running, - an evaluation model (200) is created which outputs the degree of aging (Γ) of the lubricating oil using the aging factors (Σ) as input variables, and - to determine the degree of ageing (Γ), at least the following steps are carried out continuously: • Recording the operating parameters (Ψ) of the combustion engine, • Determining the aging factors (Σ) using the aging model (100) based on the recorded operating parameters (Ψ), and • Determining the degree of aging (Γ) of the lubricating oil using the evaluation model (200) based on the determined aging factors (Σ).

The application belongs to the technical field of lubricating oil additives, and particularly relates to a polyisobutylene succinimide dispersant as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing polyisobutylene maleic anhydride, base oil and aromatic hydrocarbon solvent, then adding aminobenzene boronic acid, and performing reaction by increasing temperature to reflux temperature, and obtaining the polyisobutylene succinimide dispersant after filtration. The polyisobutylene succinimide dispersant is prepared by using polyisobutylene maleic anhydride and aminobenzene boronic acid, the molecular structure of the polyisobutylene succinimide dispersant contains not only an aromatic ring but also an oxygen-containing benzene boronic acid group, the aromatic ring and the benzene boronic acid group both have a good adsorption effect on soot particles, and the ability of the polyisobutylene succinimide dispersant to disperse soot is improved. The performance test results show that the oil product prepared by using the polyisobutylene succinimide dispersant of the application not only improves the soot dispersion performance of the oil product, but also improves the high-temperature detergency of the oil product, and the preparation process is simple and easy to implement.

The utility model discloses a closed full-automatic tin smoke blowing system of a top blowing furnace. The closed full-automatic tin smoke blowing system comprises a tin smoke receiving part, a top inlet of the tin smoke dust blowing part is connected with a bottom outlet of the tin smoke dust receiving part, and a bottom outlet of the tin smoke dust blowing part is connected with an inlet of the screw feeder; the pressure relief part is connected with the tin smoke dust receiving part and the tin smoke dust blowing part; the vulcanizing part is connected with the tin smoke dust receiving part and the tin smoke dust blowing part; the purging part is connected with the vulcanization part; the spray gun part can extend into the top blowing furnace, can move to a first position and a second position and is used as a triggering condition for starting blowing and automatically spraying tin smoke dust particles to the top blowing furnace, the spray gun part is connected with a blowing pipeline, and an outlet of the spiral feeder and the blowing part are both connected with the blowing pipeline; and the blowing part is provided with a constant-pressure pore plate for conveying constant quantity of compressed air to the blowing pipeline. The system can provide constant blowing air, and the blowing effect is guaranteed.

The present application relates to a kind of carbon smoke particle surface water vapor phase change test system and method, belong to phase change test technical field, carbon smoke particle sampling sub-system is used to provide primary carbon smoke particle or secondary carbon smoke particle to sample bin, temperature / pressure control subsystem is used to adjust the temperature and pressure of sample bin, so that sample bin is at predetermined temperature and predetermined pressure, predetermined humidity water vapor generation subsystem is used to provide predetermined humidity water vapor to sample bin, detection component is used to detect the phase change of predetermined humidity water vapor on the surface of primary carbon smoke particle or secondary carbon smoke particle at predetermined temperature and predetermined pressure, so that the temperature-pressure-humidity of sample bin can be realized coordinated control, carries out carbon smoke particle surface water vapor phase change test research under different temperature, humidity, pressure conditions.

A method for purifying smoke source in tunnel excavation process relates to the field of tunnel engineering air purification, comprising a device box, a negative pressure return air inlet, a pressure fan, a static pressure box, a smoke treatment device, a harmful gas purification device and a high-pressure air curtain system are fixed in the device box, the high-pressure clean air jet formed by the air outlet is sprayed to the drilling and blasting operation face, the high-concentration smoke-carrying air area is targeted, quickly diluted and strongly disturbed, the smoke-carrying air is passively returned to the negative pressure return air inlet grid area on both sides of the device box, the smoke particles are intercepted and purified by the smoke treatment device, the harmful gas is purified by the harmful gas treatment device, and the purified air is pressurized and sprayed by the pressure fan to complete the circulation of the smoke-carrying air on the face; the airflow organization formed by the method has good disturbance effect on the air retention on the face, has good smoke and dust removal effect in a large space or range, and is also suitable for relatively closed space.

The invention relates to the technical field of steel grating production, and discloses a welding device for steel grating production and processing, which comprises a workbench for fixing plates, a transverse plate is movably arranged on the workbench, and a welding gun capable of moving up and down is arranged below the transverse plate. A detection seat moving synchronously with the welding gun is further arranged below the transverse plate, and a detection head is arranged at the bottom of the detection seat. A round rod is arranged on the detection seat in a sliding manner, a cylinder is fixed at the bottom end of the round rod, cleaning cloth sleeves the cylinder, a first positioning block is fixed on the detection seat, and a first track groove for the round rod to slide is formed in the first positioning block; according to the technical scheme, before the weld joint is detected, the lens of the detection head can be wiped through left-right movement of the cleaning cloth, smoke particle impurities on the lens can be conveniently removed, and therefore the influence of the smoke particle impurities on weld joint detection is reduced.

The utility model relates to the technical field of industrial waste gas treatment, in particular to a purification device for industrial waste gas treatment, which comprises a base, and a primary purification mechanism, a water-gas separator and a secondary purification mechanism are sequentially arranged on the upper end face of the base from left to right. Smoke dust particles in waste gas are preliminarily removed through water at the lower end of the interior of the spraying box, then the waste gas floats upwards and makes contact with water mist again, the smoke dust particles in the waste gas are further removed through the water mist, the smoke dust particles in the waste gas are separated independently, and the smoke dust particles in the waste gas are prevented from blocking an activated carbon filter screen. Meanwhile, the service life of the activated carbon filter screen can be prolonged, a plurality of bolts for fixing a mounting plate are screwed down, then the mounting plate drives the activated carbon filter screen to be taken out of the filter box through a notch, then the activated carbon filter screen is cleaned, maintained or replaced, and then the steps are reversely operated to mount the activated carbon filter screen; and therefore, the activated carbon filter screen can be conveniently disassembled and assembled.

The invention relates to the field of flue gas treatment, in particular to a fire coal coupling biomass sludge blending combustion flue gas treatment device which comprises a support, and a flue gas inlet box, a smoke dust treatment box and a flue gas treatment box are sequentially installed on the top of the support from bottom to top. A smoke dust filtering assembly for filtering smoke dust and a smoke dust cleaning assembly for cleaning the smoke dust are mounted in the smoke dust treatment box, and an ash discharging hopper is mounted at the bottom of the smoke inlet box; a flue gas treatment assembly for reheating flue gas and a flue gas spraying assembly for spraying, cooling and catalyzing the flue gas are mounted in the flue gas treatment box, and a smoke exhaust hood is mounted at the top of the flue gas treatment box. Smoke particles in smoke are filtered through the smoke filtering assembly, the filtered smoke continues to upwards enter the smoke treatment box, and the smoke treatment assembly can conduct secondary heating combustion on the smoke, so that dioxin substances in the smoke are combusted and purified, and the dioxin substances are exhausted from the top of the smoke exhaust hood.

The invention discloses a soot particle modification method based on in-cylinder combustion regulation of an automobile engine, belongs to the technical field of combustion control of internal combustion engines, and solves the technical problem that the adsorption capacity of soot particles is relatively weak. The method comprises the steps that fossil fuel, oxygen-containing fuel and other fuels with different properties are adopted for engine design of the engine fuel; and then effective control over the combustion process and the combustion path of the engine is achieved by adjusting control parameters such as the air inlet parameter, the oil injection strategy, the operation working condition, the EGR rate and the equivalence ratio of the engine. And finally carrying out carbonaceous test and evaluation on the collected soot particles. The average particle size of the modified soot particles is reduced by 6.3%, the graphitization degree is reduced, and the specific surface area is increased by 39.1%; the pore size distribution range is 2-140nm and belongs to mesopores and macropores, and the total pore volume is increased by 3.5%. This allows the soot particles to have higher oxidation activity and adsorption properties.

The invention relates to the technical field of energy storage batteries, battery swap stations, electric automobiles and large battery packs, and discloses a composition of a heterogeneous liquid fire extinguishing agent, the heterogeneous liquid fire extinguishing agent and a preparation method and application of the heterogeneous liquid fire extinguishing agent. The composition contains a phosphorus-containing ferrocenyl compound, a foaming agent, a penetrating agent, a flame retardant, a thickening agent, a dispersing agent, an adsorbent and water, wherein the structure of the phosphorus-containing ferrocenyl compound is shown as a formula (1). The phosphorus-containing ferrocene compound in the heterogeneous liquid fire extinguishing agent can be decomposed into iron atoms and phosphorus atoms after encountering flame, the iron atoms, the phosphorus atoms and free radicals in the flame are subjected to cyclic catalytic reaction, and the free radicals such as H, O and OH are continuously consumed until the flame disappears; the heterogeneous liquid fire extinguishing agent has cooling and fire extinguishing functions, terminates a thermal runaway reaction and prevents reburning; and meanwhile, the heterogeneous liquid can adsorb flammable and explosive gas and soot particles generated by combustion, so that the poisoning and explosion risks are reduced.

This utility model belongs to the field of food equipment technology, specifically a high-efficiency, energy-saving, heat-dissipating automatic cooking machine pot module. It includes a pot cover, which is composed of an upper cylindrical section and a lower funnel section. The bottom surface of the cylindrical section has a central through hole, and several ventilation holes are arranged around the central through hole. A flow-dividing baffle is provided on the bottom surface of the cylindrical section to divide the ventilation holes into inner and outer groups. The top of the funnel section corresponds to the position of the flow-dividing baffle. Inside the pot cover, from top to bottom, are arranged an inner pot, an electromagnetic coil, a fan, and a filter screen. The filter screen includes a base plate, on which a return flow baffle is provided. When the automatic cooking machine pot module of this utility model is working, cold air is drawn into the interior of the pot cover by the fan and exchanges heat with the electromagnetic coil and the bottom of the inner pot, resulting in high heat exchange efficiency. The filter screen at the bottom of the funnel section is designed with a return flow baffle structure, which reduces the entry of soot particles when air passes through this structure.

An electrically energized renewable exhaust gas treatment device and a method for parking regeneration using the device. With the metal foam inner cylinder in the exhaust gas treatment device as the main component, supplemented by an electric heating component, it has fast heat conduction and avoids ablation caused by a sharp temperature rise. It can achieve a space utilization rate of 50%, ensure a soot particle capture efficiency of over 85%, and can use a volume of about 1.5L, which is about 10 times higher than that of ordinary DPF, preventing the situation of soot particle blockage. At the same time, the operation of the control electric heating wire is controlled by an electric control mechanism, and the electric control system is equipped with a digital display thermometer and a thermocouple, which can accurately control the temperature of the heating system, perform differential temperature rise and treatment, and the regeneration method is more flexible.

The invention belongs to the technical field of carbon materials, particularly relates to an application of a carbon material taking soot as a carbon source in an energy storage device, and provides a preparation method of a regenerated carbon material for soot particulate matters discharged by a diesel engine, for the first time, the soot is put forward as a nanoscale conductive carbon material source, the raw material source is stable, and the cost is nearly zero; as the diesel soot is a carbonized product (the carbon content is greater than 80%), the independent activation or pre-carbonization step required by preparing a carbon material by taking biomass or a polymer precursor as a raw material is omitted, the production process can be simplified, and the energy consumption can be reduced; the carbon material obtained after one-step activation and carbonization process treatment is carried out on soot particles discharged by a diesel engine, and the carbon material obtained after treatment is good in conductivity and can be used as a supercapacitor electrode material, a lithium ion battery negative electrode material, a conductive agent or other conductive carbon materials.

The invention belongs to the technical field of catalysts, and particularly relates to a micron-sized macroporous cerium-zirconium-praseodymium composite material as well as a preparation method and application thereof. According to the preparation method, the micron-sized macroporous CeO2-ZrO2-PrO2 composite material is constructed by using the starch which is low in price and wide in source as a template agent under an industrial coprecipitation process, and the micron-sized macroporous CeO2-ZrO2-PrO2 composite material is used as a catalyst, so that the contact efficiency between the catalyst and soot particles can be improved, and the performance of the catalyst for purifying the soot particles in the tail gas of the diesel engine is further improved.

The present invention relates to the technical field of glass production, and specifically discloses an intelligent high-temperature melting furnace for producing special glass, comprising a melting furnace body, the melting furnace body comprising an insulated furnace wall, a furnace bore provided inside the insulated furnace wall, a furnace chamber for storing raw materials, a smoke exhaust duct provided outside the furnace chamber, a smoke filter and a purifier provided on the inner wall of the smoke exhaust duct, a heating mechanism provided outside the furnace chamber, and a stirring component provided inside the furnace chamber. The intelligent high-temperature melting furnace for producing special glass provided by the present invention is provided with an impurity removal component, so that when the drive shaft rotates in the opposite direction, the first curved sheet and the second curved sheet rotate accordingly, and the powder filter holes thereon are staggered with each other, so that some fine smoke dust particles enter the internal chambers of the first curved sheet and the second curved sheet from the powder filter holes, rise with the hot air flow, and are discharged from the smoke exhaust duct together with the smoke, thereby improving the impurity removal efficiency and effectively preventing the smoke dust particles from penetrating into the raw materials and not being flipped to the top.

The utility model provides a waste gas treatment device in asphalt production. The waste gas treatment device comprises a spray tank, a waste gas inlet pipe, a first spray pipe, a filler ball layer, a combustion chamber, a second spray pipe, a hose, a spray liquid system, a blow-off pipe, a gas outlet pipe, an activated carbon layer, a filter chamber and an exhaust pipe, according to the utility model, the spraying tank is arranged, smoke dust adsorption can be carried out on waste gas after combustion, the filler ball layer is arranged in the spraying tank, the contact duration and the contact area of spraying liquid and the combustion waste gas are increased, so that the smoke dust absorption quality is improved, and toxic gas adsorption is carried out on the sprayed combustion waste gas through the activated carbon layer; therefore, the phenomenon that a large number of smoke particles and some harmful substances in combustion waste gas flow into the atmosphere when a combustion method is adopted is eliminated.

The application discloses a slagging anti-blocking device for sludge treatment boiler, which comprises an ignition tank, an air pipe, a gas pipe, a first electromagnetic valve, a flame arrester, a pulse tank, a spraying pipe and an air compressor, the air compressor is connected with a shunt box, the shunt box is matched with a first branch and a second branch, the first branch is connected with the ignition tank, a second electromagnetic valve is installed on the first branch, a third electromagnetic valve and a check valve are installed on the second branch, the flame arrester is also installed on the first branch, a sweeping device is connected with the second branch, the check valve is arranged between the third electromagnetic valve and the sweeping device, the spraying pipe vertically penetrates through the sweeping device, high-speed airflow sprayed by the sweeping device acts on the spraying pipe, a rotating cleaning device is installed at the lower part of the spraying pipe, and the elbow position of the spraying pipe is located in the rotating cleaning device; the device can prevent smoke dust particles from entering reversely.

The application provides a kind of double-phase fluidized roasting method, the roasting furnace body of the method is straight cylinder cavity, and the sealing cavity surrounded by the pouring dome and the heat preservation structure independently arranged in the furnace top;The feeding port and the discharge port of the roasting furnace are opened on the same side of the furnace body, and the feeding port is located above the discharge port;The feeding port is equipped with a drum thrower;The bottom of the roasting furnace is provided with a plurality of dispersedly arranged heat removal devices;The flue of the roasting furnace is provided with an air supplement device;During the dense phase oxidation desulfurization process of raw materials, the heat removal device is uniformly heat exchanged to stabilize the bed temperature, and the high temperature steam discharged by the heat removal device is used as the medium for maintaining the constant temperature of the sealing cavity;The air supplement device is used to supplement oxygen-rich air into the flue to form a dilute phase secondary roasting zone.The furnace top of the application uses a heat preservation structure independent of the dome, prolonging the service life of the furnace top;The feeding port is arranged above the discharge port on the same side, and the raw material into the furnace hinders the smoke dust particles in the upward flue gas, reducing the dust content of the flue gas.

The invention belongs to the technical field of tower foot welding, and particularly relates to electric angle steel tower foot welding equipment which comprises a supporting frame, a transverse sliding frame, a positioning table, a position measuring type driving mechanism, a dust collecting type welding and connecting mechanism, a compressed air type anti-scattering mechanism and a controller. The transverse sliding frame is arranged on the upper wall of the supporting frame, and the positioning tables are symmetrically arranged on the upper walls of the two ends of the supporting frame. The position measuring type driving mechanism is arranged on the transverse sliding frame and comprises driving assemblies, sliding assemblies and position measuring assemblies, the driving assemblies are arranged on the upper walls of the two ends of the transverse sliding frame, the sliding assemblies are arranged on the upper wall of the transverse sliding frame, and the position measuring assemblies are arranged on the side walls of the driving assemblies. According to the tower foot welding equipment for the electric angle steel tower, welding smoke generated in the welding process can be collected, smoke particles in the welding smoke can be extruded into cakes, and secondary diffusion of smoke is prevented.

The utility model discloses a raw gas washing device which comprises a gas purification chamber and a spraying system, the gas purification chamber is communicated with a raw gas inlet pipeline and a raw gas exhaust pipeline, the raw gas inlet pipeline is arranged at the top of the gas purification chamber, the raw gas exhaust pipeline is arranged on the side wall of the gas purification chamber, and ammonia water is arranged at the bottom of the gas purification chamber; the spraying system is communicated with the gas purification chamber, the spraying system comprises a first spraying assembly and a second spraying assembly, the first spraying assembly sprays the raw gas in the raw gas inlet pipeline, the second spraying assembly sprays the raw gas in the gas purification chamber, and liquid drops sprayed by the spraying system and the raw gas move in opposite directions. According to the raw coke oven gas washing device disclosed by the utility model, a two-time spraying mode is adopted, and sprayed liquid drops and raw coke oven gas move in opposite directions, so that the raw coke oven gas can be in full contact with the liquid drops, smoke dust particles in the raw coke oven gas settle after being captured by the liquid drops, and meanwhile, the smoke dust particles and the liquid drops are subjected to chemical reaction or are dissolved and absorbed by the liquid drops; therefore, the purification efficiency of the raw gas is improved.

The invention relates to the technical field of urban road particulate matter characteristic measurement, in particular to a particulate matter detection instrument based on a resistance-type particulate matter sensor and a using method thereof, and the particulate matter detection instrument comprises a protection box body, a sampling device, a sensor cleaning device, a detection device, a data processing device and a data sending device; the sensor cleaning device, the detection device, the data processing device and the data sending device are arranged in the protection box body; under the synergistic effect of the device with the structure, the total number of particles and the proportion of soot particles, rubber particles and other friction and wear particles are analyzed and calculated by detecting a conductivity change function between the interdigital electrodes and combining laboratory calibration data, and the tail gas particles and the wear particles are detected on line at the same time; moreover, the system is compact in size, simple in structure, free of operation and maintenance by professionals, and more suitable for large-scale deployment and remote automatic operation.

The invention discloses a catalyst for simultaneously eliminating soot particles and nitrogen oxides in diesel engine tail gas and a preparation method and application thereof, the composition of the catalyst is A [alpha] B [beta] C [gamma] D [x] E [1-x] O [delta], A is a La element, B is one or more of K, Rb and Cs elements, C is one or more of noble metals Pt, Pd, Rh and Ir elements, and x is more than or equal to 1. D is one or more of Co and Mn elements, and E is Fe element; alpha, beta, gamma, x and (1-x) respectively represent atomic ratios of the elements, the value range of alpha is 0.6-0.9, the value range of beta is 0.05-0.2, the value range of gamma is 0.05-0.2, the value range of x is 0.1-0.9, and delta is a numerical value determined by oxygen of each oxide. The prepared catalyst is high in catalytic activity, in the simulated diesel engine tail gas atmosphere, the maximum combustion temperature of soot oxidation can be reduced to 400 DEG C or below from 600 DEG C in the absence of the catalyst, the conversion rate of nitrogen oxides is 40%, and the catalyst can effectively remove soot particles and nitrogen oxides in diesel engine tail gas at the same time.

Method (100) for the automated cleaning of a protective gas guide element (12) of a burner, wherein the shielding gas guiding element (12) comprises an elongated component with an internal shielding gas channel, the procedure (100) comprises the following steps: - Providing (102) a cleaning unit (10) with at least one spring-elastic tension spring (14), - Feeding (104) the burner with the attached shielding gas guide element (12) under the cleaning unit (10), - Threading (106) the tension spring (14) into the inner channel of the shielding gas guide element (12), - Moving the burner up and down (108) relative to the cleaning unit (10) so that the tension spring (14) is guided along inside the shielding gas guide element, - Removal (110) of adhering weld spatter and soot particles by the mechanical action of the tension spring (14).

This invention relates to a swirl-type particulate oxidation catalyst for exhaust gas aftertreatment via micro-injection. The catalyst includes a reactor with a swirl channel along its axial direction. A catalytic coating is applied to the swirl channel. The reactor also includes a turbulence mechanism to increase the contact time between the airflow and the catalytic coating. The turbulence mechanism includes at least one turbulence element disposed within the swirl channel and a drive module for driving the turbulence element to reciprocate axially within the swirl channel. During the reciprocating motion, the turbulence element causes a periodic change in the local cross-sectional area of ​​the swirl channel, altering the velocity and direction of the airflow passing through it. This invention enables the exhaust gas to rotate at high speed within the swirl channel, using centrifugal force to throw soot particles towards the channel wall, increasing the collision probability between soot and the catalytic coating, and simultaneously extending the residence time of soot within the catalyst, thereby improving oxidation efficiency.

The present application relates to the field of flue gas treatment, in particular to a flue gas treatment device for coal-biomass-sludge mixed combustion, comprising a support, a smoke inlet box, a smoke dust treatment box and a flue gas treatment box are sequentially installed on the top of the support from bottom to top, a smoke dust filtering assembly for filtering smoke dust and a smoke dust cleaning assembly for cleaning smoke dust are installed in the smoke dust treatment box, a dust discharge hopper is installed at the bottom of the smoke inlet box, a flue gas treatment assembly for reheating treatment of flue gas, a flue gas spraying assembly for spraying cooling and catalytic treatment of flue gas are installed in the flue gas treatment box, and a smoke discharge hood is installed at the top of the flue gas treatment box. The smoke dust particles in the flue gas are filtered by the smoke dust filtering assembly, the filtered flue gas continues to enter the inside of the flue gas treatment box upwards, the flue gas treatment assembly can perform secondary heating combustion on the flue gas, thereby burning and purifying the dioxin substances in the flue gas, and discharging from the top of the smoke discharge hood.