45results about How to "Low gas resistance" patented technology

The invention discloses a chromium fog waste gas recovery treatment device which comprises a waste gas collecting device and a waste gas treatment device, wherein the waste gas collecting device consists of a rim exhaust hood (1), an air inlet pipe (2), and an air draft branch pipe header pipe (3), wherein the air inlet pipe (2) is connected with the rim exhaust hood (1) and the air draft branch pipe header pipe (3), the air draft branch pipe header pipe (3) is arranged at the upper end of the rim exhaust hood (1), an electroplating bath (11) is arranged at the lower end of the rim exhaust hood (1), and a gap is arranged at the lower end of the rim exhaust hood (1), at least three air draft holes (10) are arranged in the upper end of the rim exhaust hood (1), a movable cover plate (9) is arranged on the rim exhaust hood (1), the waste gas treatment device consists of a waste gas spraying purification tower (4), an air outlet pipe (5), a chromium fog recoverer (6) and a recovery liquid tank (7), and a funnel cap (8) is arranged at the upper end of the recovery liquid tank (7). By adopting the structure, the solution can be effectively recovered, and the emission concentration can be reduced.

The invention discloses a high-performance composite adsorbing material and a preparing method and application thereof. The composite material is prepared from powdery zeolite, powdery active carbon,wood pulp fibers, special fibers, an insoluble fire retardant and an adhesive. Multiple components of the special fibers, the active carbon, the zeolite and the insoluble fire retardant are added intothe composite adsorbing material prepared with the method, and the composite adsorbing material has the advantages of being high in fire resistance, good in hydrophobicity, heat stability and chemical stability, developed in pore structure, large in specific area, high in mechanical strength, not prone to pulverization, controllable in gas channel, wide in application range and the like, and is particularly suitable for adsorption purification of all kinds of VOCs waste gas. According to the high-performance composite adsorbing material and the preparing method and application thereof, a source of raw materials is wide, the technology process is simple, fiber products (felt, bands, cloth and the like) with different forms can be freely processed, and the composite adsorbing material has the advantages of being high in adsorption capacity, capable of achieving in-situ regeneration and recycling, high in adsorption/desorption rate, small in pressure drop and the like in application of fixed bed adsorption and rotating wheel adsorption.

The invention is suitable for the field of protective articles, and provides high-performance adsorption film used for removing VOC exhaust gas. The film includes activated carbon fiber-type nonwoven fabric membranes and adsorbent particles. The adsorbent particles are clamped between the activated carbon fiber-type nonwoven fabric membranes and are fixed to the activated carbon fiber-type nonwoven fabric membranes through adhesive particles. The particle size of the adsorbent particles is 200-500 [mu]m. The particle size of the adhesive is one fourth to one third of the particle size of the adsorbent particles. In the film, the activated carbon fiber-type nonwoven fabric membranes are adopted as substrate filtration membranes, and activated carbon fibers when compared with activated carbon have higher adsorption capacity and higher adsorption-desorption speeds and have acid-resistant and alkali-resistant properties.

The invention provides a filtering device with electrostatic spinning nanofiber cloth and a mask. The filtering device comprises the electrostatic spinning nanofiber cloth and melt-blown non-woven fabric. The melt-blown non-woven fabric is arranged on at least one side of the electrostatic spinning nanofiber cloth to form more than two layers of filtering structures with the electrostatic spinningnanofiber cloth; the filtering efficiency percentage of the melt-blown non-woven fabric to particles with the particle size of 0.02-10 mu m is M; the filtering efficiency percentage of the electrostatic spinning nanofiber cloth to particles with the particle size of 0.02-10 mu m is N; M/N is equal to 1.05-1.6. By setting the filtering efficiency value, a filtering combination of the electrostaticspinning nanofiber cloth and the melt-blown non-woven fabric is formed, a graded filtering structure with different filtering effects on substances such as solid particles, bacteria and viruses withdifferent sizes is formed, and meanwhile, the used gram weight is low and the porosity is high so that airflow cannot be blocked when high-speed airflow passes through the graded filtering structure,and thus the resistance pressure drop cannot be increased.

The invention discloses a rotor engine. The rotor engine comprises a casing, a first swing piston, a second swing piston, an engine rotor and a combustion chamber rotor, wherein a main chamber is formed at the inner part of the casing; a first piston groove and a second piston groove are formed in the side wall of the main chamber; the first swing piston comprises a first rotating part in rotating cooperation with a first pivoting part, and a first sliding part in airtight and sliding cooperation with a first cambered sliding surface; the second swing piston comprises a second rotating part in rotating cooperation with a second pivoting part, and a second sliding part in airtight and sliding cooperation with a second cambered sliding surface; the engine rotor can be mounted in the main chamber in a rotatable manner, and the center of the main chamber is positioned on a rotating shaft of the engine rotor; the combustion chamber rotor can be mounted in a combustion chamber in a rotatable manner, and the center of the combustion chamber is positioned on a rotating shaft of the combustion chamber rotor. The rotor engine disclosed by the invention is good in structural reliability, and high in working efficiency.

The invention provides a flue gas desulfurization and denitrification system device and a flue gas desulfurization and denitrification method adopting ozone oxidation in cooperation with multistage spraying. The desulfurization and denitrification system device comprises a mixing device, an oxidation absorption device and a spraying absorption device which are sequentially connected in the flowingdirection of flue gas, the interior of the oxidation absorption device is sequentially divided into an air inlet area, a spraying area, an oxidation area and an exhaust area which are communicated with one another in the air inlet direction, and an inclined spraying module is arranged on the inner wall, where the spraying area is located, of the shell; the mixing device is externally connected with an ozone generating device; and the ozone generating device is also connected to the shell where the oxidation zone of the oxidation absorption device is located. The desulfurization and denitrification method comprises the steps that flue gas and ozone are mixed and oxidized and then sequentially enter a spraying area and an oxidation area of the oxidation absorption device, the flue gas enters the spraying absorption device to be sprayed and absorbed again after being sprayed, absorbed and oxidized, and desulfurization and denitrification of the flue gas are completed. Ozone oxidation iscooperated with multi-stage inclined spraying, so that desulfurization and denitrification treatment can be effectively carried out on flue gas.

The invention provides a pressure relief valve, a respiratory support equipment air path and respiratory support equipment. The pressure relief valve comprises a valve body, wherein the valve body is of a hollow structure provided with an air inlet and a pressure relief opening, a diaphragm is arranged on the lower portion of the valve body, the air inlet communicates with the pressure relief opening through a space above the diaphragm, and a driving device is arranged on the lower portion of the diaphragm and used for driving the diaphragm to move up and down. The air inlet and the pressure relief opening are formed in the upper portion of the pressure relief valve at the same time, control over the air flow is achieved by controlling the distance between the diaphragm and the pressure relief opening, the pressure relief valve is used for being connected with a branch of the respiratory support equipment air path and connected with a main path of the air path through one air inlet, the air resistance of the respiratory support equipment air path can be reduced, pressure control is achieved by controlling the pressure relief magnitude of the pressure relief valve on the branch, two or more pressure relief valves are combined for use in the air path according to use requirements, the pressure control range is expanded, and the pressure control precision is improved.

The invention discloses an online denitration process for sintering flue gas. According to the technical scheme, the sintering flue gas online denitration process comprises the steps that sintering gas flow enters a sintering material layer under the suction effect of a draught fan to be subjected to combustion-supporting sintering to form sintering flue gas, and the sintering flue gas penetratesthrough the sintering material layer, a sintering machine trolley grate and an air bellow to enter a main flue; a sintering machine is sequentially divided into an ignition area, a low-temperature flue gas area, a flue gas rapid heating area, a NOx concentration rapid reduction area and a high-temperature flue gas area in the advancing direction of the trolley; the sintering flue gas is collectedthrough a low-temperature flue gas main flue, a high-NOx flue gas main flue and a high-temperature flue gas main flue, the sintering flue gas of the low-temperature flue gas main flue is mixed with ammonia gas, the mixture is led into a low-temperature flue gas circulation cover above a sintering material layer in a high-temperature flue gas area through a low-temperature flue gas pipeline to enter the sintering material layer again; and temperature rise is conducted in the sintering material layer, and reduction denitration is carried out under the catalytic action of iron-based multi-oxidesrich in the sintering material layer. The process is simple, a denitration catalyst does not need to be purchased, the occupied area is small, and the operation cost is low.

The invention discloses a multifunctional nose aerate instrument. The multifunctional nose aerate instrument comprises a conical spiral spring, an internal LED and a power supply device, wherein the small-caliber end of the conical spiral spring can be inserted into the nostril of a patient, and the conical spiral spring is spirally wound by a spring wire, an electric heating wire and a first conducting wire are arranged in the spring wire; the inner LED is arranged at the small-caliber end of the conical spiral spring; the power supply device is connected with the internal LED and the electric heating wire through the first conducting wire. According to the multifunctional nose aerate instrument provided by the invention, a small special matching spring tension force of the conical spiralspring is utilized to slightly expand the nostril to increase the airway ventilation efficiency of 5 percent to 25 percent, the gas resistance of the conical spiral spring is small and will not causeblockage, The conical spiral spring has the advantages of simple structure and convenient operation. At the same time, the multifunctional nose aerate instrument is used for irradiating the interiorof the nasal cavity with the internal LED, and is favorable for treating rhinitis.

The invention discloses a coal pyrolysis system, which comprises a pyrolysis unit, a coke quenching unit, a waste heat recovery unit, a dust removal and purification unit and an oil-water separation and purification unit, wherein the pyrolysis unit, the coke quenching unit, the waste heat recovery unit and the dust removal and purification unit are connected in sequence; the pyrolysis unit comprises a pyrolysis reactor; the pyrolysis reactor takes a heat storage type radiant tube burner as a heating heat source; the oil-water separation and purification unit is connected with the pyrolysis unit for carrying out oil-water separation on crude gas generated by coal pyrolysis. According to the coal pyrolysis system, the heat storage type radiant tube burner is taken as the heating heat source,the temperature of discharged smoke generated by a combustion chamber is not lower than 200 DEG C, in addition, the discharged smoke flows in a radiation tube and is not mixed with the crude gas generated by coal pyrolysis, and the discharged smoke can be directly conveyed to the coke quenching unit to serve as a coke quenching gas carrier. The invention simultaneously provides a coal pyrolysis method which uses the coal pyrolysis system.