31results about How to "Quick blend" patented technology

The invention discloses a fuel and air mixing device for a low-pollution burning chamber of a gas turbine. Fuel comprises a main burning level and a duty burning level; and air is supplied by a three-stage cyclone. The fuel and air mixing device is characterized in that the central duty level adopts diffusive burning, and the peripheral main burning level adopts premixing or semi-premixing burning. The central duty level consists of a centrifugal atomizing nozzle and first-stage cyclone air; and the rotating directions of the first-stage cyclone air and second-stage cyclone air are opposite. The fuel of the main burning level is supplied by a multipoint direct-injection type nozzle, the air is respectively supplied by the second-stage cyclone air and third-stage cyclone air, and the rotating directions of the second-stage cyclone air and third-stage cyclone air are opposite. The central duty level is used when in low working conditions such as starting and slowing and the like, so that the stable burning range can be widened, the burning efficiency can be improved and the emission of CO and UHC is reduced; and when in large working conditions, the duty level and the main burning level work simultaneously, the duty level provides a stable ignition source for the main burning level, a main burning area is in a lean-oil state, and the temperature is far lower than the temperatureof insulated flame, so that the emission of NOx under the large working conditions can be obviously reduced. The fuel and air mixing device can be used for an aerial gas turbine engine or an industrial gas turbine.

The invention discloses an abrasion-resistant recycled asphalt concrete and a preparation process thereof, relates to the technical field of asphalt concrete processing, and solves the problem that asphalt concrete pavement is prone to ageing due to frequent temperature changes and is prone to large abrasion during use. The abrasion-resistant recycled asphalt concrete comprises the following components in parts by weight: 75 to 80 parts of new aggregate, 5 to 8 parts of SBS modified asphalt, 0.5 to 0.7 part of mineral powder, 20 to 35 parts of a recycled asphalt mix old material, 0.2 to 0.4 part of a regenerating agent, 6 to 10 parts of steel slag, 0.4 to 0.8 part of hydrated lime powder, 1.8 to 2.6 parts of fiber filler, 0.5 to 1.5 part of abrasion-resistant filler, 0.4 to 0.8 part of carbon black, 4.5 to 7.5 parts of sericite particles. The abrasion-resistant recycled asphalt concrete in the invention has good stability in the use process, is not easy to age due to intermittent friction heat generated between the abrasion-resistant recycled asphalt concrete and a wheel, and is not easy to greatly wear.

The invention provides a pulse detonation pushing device based on a regenerative cooling structure. Based on the regenerative cooling structure, a convection/impact composite type heat exchange methodis adopted, liquid fuel oil is heated, catalyzed and cracked through heat radiation of detonation combustion, micromolecule gas fuel excellent in detonation performance is generated, the time and distance of deflagration to detonation transition (DDT) of a pulse detonation engine can be effectively shortened, and meanwhile efficient cooling of the wall face of a detonation pipe can be achieved. The catalytic and cracking fuel oil pretreatment method is adopted, the detonation performance of fuel is effectively improved, and meanwhile the pushing performance and safety of the engine are improved. The regenerative cooling structure provides a heat source for a catalytic and cracking reaction, and meanwhile airborne fuel oil is adopted as cooling media to cool the wall face of the detonationpipe. Temperature distribution of the wall face of the detonation pipe is considered, the convection/impact composite type cooling manner is adopted on the DDT segment of the detonation pipe, and a microchannel inner convection heat exchange manner is adopted in the detonation spread segment.

The invention provides a small-scale two-stage rocket combination ramjet. The small-scale two-stage rocket combination ramjet comprises an air inlet channel, an isolation section, a first-stage combustion chamber, a second-stage combustion chamber, a tail spraying pipe, a first rocket unit, a fuel injection hole and a second rocket unit. The air inlet channel, the isolation section, the first-stage combustion chamber, the second-stage combustion chamber and the tail spraying pipe are sequentially connected. Airflow flows in through the air inlet channel, passes through the isolation section, the first-stage combustion chamber and the second-stage combustion chamber and then is exhausted outwards through the tail spraying pipe. The air inlet channel provides needed capture air for an RBCC engine through profile changes under different flight Mach numbers and work modes. The isolation section is used for stably isolating the air inlet channel from the first-stage combustion chamber and used for containing pre-combustion shock train formed under the pressure action of the combustion chambers, the situation that the airflow fluctuates greatly at the air inlet section, and consequentlythe combustion efficiency is influenced is avoided, and the matching stability of the air inlet channel and the rocket unit is improved.

The invention aims at providing a pyrolysis fuel gas and air rapid mixing device. The pyrolysis fuel gas and air rapid mixing device comprises an outer shell, an inner shell and a lobe mixer, wherein the inner shell is arranged in the outer shell; a hydrocyclone air inlet passage is formed between the inner shell and the outer shell; the lobe mixer comprises a lobe mixing structure inner passage wall, lobe convex structures and lobe concave structures; the lobe convex structures and the lobe concave structures are arranged alternately to form an annular structure; the lobe mixing structure inner passage wall is connected with the annular structure; a lobe mixing structure inner passage pyrolysis fuel gas inlet communicating with a rich oil pyrolysis combustion chamber is formed in the lobe mixing structure inner passage wall; the lobe mixer is arranged in the inner shell, and a lobe mixing air passage is formed between the lobe mixing structure inner passage wall and the inner shell; an inclined radial runner provided with cyclone blades is installed at an outlet of the lobe mixer; and a pyrolysis fuel gas and air mixing gas outlet is arranged at an outlet of the inclined radial runner. The pyrolysis fuel gas and air rapid mixing device can complete rapid mixing of pyrolysis fuel gas and air, and lowers generation of lean burning area NOx.

The invention discloses a process for producing titanium tetrachloride in fluidizing chlorination furnace by using artificial rutile. The process includes five steps of: furnace baking, control of feeding, control of chlorination, tail gas slagging and cyclone dust collection. According to the process, the preparation of titanium tetrachloride by using the fine-sized artificial rutile is achieved, and meanwhile the collection and recycle of the artificial rutile in dust slag which is not completely reacted are also achieved.

The invention provides a pulse type micro-jet gas nozzle control device. The pulse type micro-jet gas nozzle control device comprises a gas nozzle and a combustion-supporting gas pulse jetting mechanism. A gas jetting through hole is formed in the gas nozzle, and the combustion-supporting gas pulse jetting mechanism is provided with a combustion-supporting gas jetting hole and a central mixing chamber. The gas jetting through hole and the combustion-supporting gas jetting hole are communicated with the central mixing chamber, the axis of the gas jetting through hole does not coincide with the axis of the combustion-supporting gas jetting hole, and the combustion-supporting gas pulse jetting mechanism comprises an opening and closing control device for controlling opening and closing of the combustion-supporting gas jetting hole. The pulse type micro-jet gas nozzle control device has the advantages that the jetting directions of gas and combustion-supporting gas do not coincide, in this way, the gas and the combustion-supporting gas are easily and rapidly mixed in the central mixing chamber, the flow of the gas can be controlled through the gas jetting through hole, the flow of the combustion-supporting gas is controlled through the combustion-supporting gas jetting hole, pulse jetting of the combustion-supporting gas is achieved through the opening and closing control device so that the intensity and stability of flames can be controlled, and the maximum combustion efficiency of the gas is achieved.

The invention discloses sound-absorbing environmentally-friendly recycled asphalt concrete and a preparation process thereof, relates to the technical field of asphalt concrete processing, and solvesthe problem that asphalt concrete cannot effectively reduce urban noise during use due to poorer stability of noise reduction of the asphalt concrete. The asphalt concrete comprises the following components, in parts by weight: 75-80 parts of novel aggregate, 4-6 parts of SBS modified asphalt, 0.2-0.3 part of mineral powder, 16-22 parts of a recycled asphalt mixed old material, 0.04-0.08 part of aregenerant, 2.5-4.5 parts of a fibrous filler, 4-6 parts of a high-temperature-resistant sound-absorbing material, 3-3.5 parts of expanded vermiculite, 0.6-1.2 parts of water glass, and 0.4-0.8 partof microporous calcium silicate. The sound-absorbing environmentally-friendly recycled asphalt concrete provided by the invention has good sound-absorbing noise-reducing effects, can maintain good stability during use, and has a longer overall service life.

The invention relates to novel oil absorption cotton. The novel oil absorption cotton comprises a porous cotton cloth layer, a filtering layer and a graphene aerogel layer with a 3D (Three Dimensional) porous framework, which are arranged in a laminated manner, wherein the graphene aerogel layer is nitrogen-doped graphene aerogel, and the doping mass percent of nitrogen is 50 percent to 80 percent; the porous cotton cloth layer is made of super-hydrophobic/super-oleophilic polypropylene. The porous cotton cloth layer comprises a first cotton cloth layer and a second cotton cloth layer; the filtering layer comprises a first filtering layer and a second filtering layer; the first filtering layer and the second filtering layer are arranged on two opposite side faces of the graphene aerogel layer respectively; the first cotton cloth layer is arranged at one side, far away from the graphene aerogel layer, of the first filtering layer; the second cotton cloth layer is arranged at one side, far away from the graphene aerogel layer, of the second filtering layer. The novel oil absorption cotton provided by the invention can be repeatedly utilized and the oil absorption efficiency is not remarkably reduced; the novel oil absorption cotton has an ultrahigh oil absorption rate and ultrahigh oil absorption efficiency.

The invention relates to an air door adjusting mechanism used for a gas cooking appliance. The air door adjusting mechanism comprises an injection pipe, a nozzle seat and a nozzle which is mounted onthe nozzle seat, the nozzle opening of the nozzle faces the air inlet end of the injection pipe, and the air door adjusting mechanism is characterized in that the air door adjusting mechanism furthercomprises an air guide part which is mounted on the nozzle seat; the air guide component can move relative to the air inlet end of the injection pipe in the axis direction of the injection pipe; and the air guide component comprises a body, a central hole aligned with the nozzle is formed in the center of the body, the body is further provided with at least two guide parts arranged around the central hole at intervals in the circumferential direction, and a primary air channel used for guiding primary air is formed by an interval between every two adjacent guide parts. Compared with the priorart, the air door adjusting mechanism has the advantages that the novel air guide component is provided, fuel gas is discharged from the center of the air guide component, and the guide parts are arranged in the circumferential direction of the air guide component body at intervals, so that the fact that primary air can rotate on the periphery of the fuel gas is achieved, and then the fuel gas andthe primary air are promoted to be rapidly mixed on the gas inlet end of the injection pipe firstly.

The invention provides a low-nitrogen combustor with a rotational flow flame stabilizing and radial injection function. The low-nitrogen combustor is composed of a combustor air channel main pipe, a combustor flame stabilizing disc, a center fuel supply pipe, a main channel dispersed fuel direct injection head, a flame stabilizing fuel injection head and an ignition channel system. A slot with a radial opening is formed between the tail end of the combustor air channel main pipe and the combustor flame stabilizing disc, and air is accelerated to flow out through the main channel dispersed fueldirect injection head along the radial slot; and after mixed gas flow collides with a hearth, one stream of gas flow deviates downstream to form downward vortex, and the other stream of gas flow deviates upstream to form upstream vortex. A rotational flow blade structure is arranged in the center of the flame stabilizing disc, a center flow return structure is formed downstream, the center flameis more stable and reliable in a diffusive combustion manner, and the oscillation risk of the hearth is reduced. Main channel combustion belongs to semi-premixed combustion, and dispersed fuel is directly injected, so that the equivalence ratio is evenly distributed; and due to the existence of the upstream vortex, internal circulation of smoke is formed, and the above overall characteristic achieves the effect of reducing nitric oxide emissions of the combustor.

The invention relates to a rocket nozzle applied to an RBCC engine and the RBCC engine. According to the rocket nozzle applied to the RBCC engine, the RBCC engine is provided with an inner flow channel, the rocket nozzle is arranged in the inner flow channel, the rocket nozzle comprises a throat part and an outlet, the throat part is round, and the area of the throat part is A1; the outlet communicates with the throat part and is positioned on the isolation section of the inner flow channel, the outlet is not round, and the area of the outlet is A2; the numerical value of A2 is estimated through the following mathematical model, so that when the RBCC engine is in the design working condition, jet flow of the rocket nozzle and injected air meet the pressure matching condition, K is the specific heat ratio of fuel in the rocket nozzle, Mat is the Mach number of the outlet, Pts is the total pressure of the injected air, and Ptp is the total pressure of the rocket.

The invention discloses a skid-mounted urea hydrolysis SCR (Selective Catalytic Reduction) denitration integrated system which comprises a reducing agent preparation system, a tail gas component analysis system, a cyclone powerful mixing system, an SCR vertical reactor, a tail gas emission system and an electrical control system, the tail gas component analysis system is used for collecting and outputting diesel engine tail gas; according to the invention, tail gas and ammonia gas are premixed in the gas inlet flue and then enter a gas inlet of the SCR vertical reactor 5, and at the moment, fan blades which are driven by an explosion-proof motor and rotate at a high speed can strongly disturb a tail gas and ammonia gas mixer body, so that the tail gas and the ammonia gas are rapidly and uniformly mixed and enter a catalyst bed through the guidance of a guide plate; therefore, the tail gas and the ammonia gas are rapidly mixed, the mixing distance is effectively shortened, the mixing effect is good, the utilization rate of a catalyst is improved, the size of equipment is reduced, and the occupied area of the equipment is reduced.

The invention relates to a nozzle for a gas stove and a gas stove using the nozzle. The nozzle comprises a body, the nozzle is characterized in that the body comprises a nozzle part located at the downstream position of the body so as to allow gas to be sprayed into the body, an outlet part located at the upstream portion of the body, an air chamber and an gas outflow part, the air chamber is arranged in the outlet part and is relatively isolated from the nozzle part, and the air chamber is provided with an air inflow hole in fluid communication with the outlet part and a primary air hole formed in the outer surface of the pipe wall corresponding to the outlet part and communicating with the air inflow hole. Compared with the prior art, the novel nozzle has the advantages that the gas outflow part of the nozzle is located at the periphery of the outlet part, and the air chamber allowing primary air to enter independently is arranged at the inner periphery of the outlet part, so that gas and the primary air are promoted to be rapidly mixed in front of the outlet part of the nozzle, and then the nozzle is provided with an inner channel air injection structure and an outer channel airinjection structure.