31results about How to "Improve degassing" patented technology

The invention relates to an RH bottom argon blowing vacuum circulating degasser belonging to the technical field of metallurgy and comprising a steel ladle and a vacuum chamber, wherein the bottom wall of the steel ladle is provided with a nozzle or an air brick, and the nozzle or the air brick is connected with an argon blowing device and positioned at one side of the projection of an ascending tube of the vacuum chamber on the bottom wall of the steel ladle. The RH bottom argon blowing vacuum circulating degasser can effectively enhance the circular flow of the RH bottom argon blowing vacuum circulating degasser, increase the internal stirring of the RH vacuum circulating degassing steel ladle, shorten the blending time, accelerate the elimination of deoxidation type inclusions inside the RH vacuum circulating degassing steel ladle and enhance the degassing and the decarburization speed.

A packaging machine and method for filling bags with a supporting structure to which at least one filling box is fastened which includes a conveyor element and to which a weighing device and a filling spout are assigned. A control device is provided. The filling box is retained non-communicating with the supporting structure and the assigned filling box and is weighed separately by the assigned weighing device to discharge from the filling box a predefined quantity of intended fill product by way of differential weighing and to fill it into the bag through the tilling spout. The control device controls the strength of a volume flow into the bag over the time of the filling process so that the intended fill product is maintained at a high fill height while overflow is simultaneously prevented.

The invention discloses a zinc alloy and a manufacturing method thereof. The zinc alloy comprises the following elements: 4-7% of Al, 0.5-1.5% of Cu, 0.4-0.7% of Ti, 0.07-0.1% of B, 0.02-0.025% of Mg,0.1-1% of others, and the balance Zn. The method comprises the following steps: (1) pure aluminum is heated to a molten state, and is sprayed on the inner surface of a crucible; and a filter structure is fixed on the side surface of the inner surface; (2) zinc alloy raw materials are put in the crucible, and are vacuumized and heated until the raw materials are totally molten to obtain a molten pool; (3) a graphite stirring device is started; and a refining agent is continuously added to obtain a purified molten pool; (4) the purified molten pool is modified, and is cast and molded by a cooling extrusion process to obtain a zinc alloy ingot to be treated; and (5) the zinc alloy ingot to be treated is subjected to spheroidizing annealing to obtain the needed zinc alloy. The zinc alloy is high in purity, low in large-size dendritic segregation, uniform in overall grain size refining and low in primary structure multiple eutectic dendritic crystals.

The invention discloses a vacuum coconut treatment process. The process comprises the following steps: diffusing, precooking, degassing, deacidifying and rehydrating, gluing and calcifying. According to the process, the coconuts are subjected to vacuum treatment by adopting a vacuum treatment tank and are subjected to air blowing by adopting an air blower, so that the acids and unpleasant odors in the coconuts are eliminated under multiple effects of heating power, vacuum and blowing force, and the coconuts fully absorb water to swell. Therefore, the coconuts are saturated, and according to the process, the coconuts are subjected to normal pressure stirring or air blowing treatment instead of deacidifying, rehydrating and embrittling in the traditional technology, so that the quality of the coconuts is stable, the treatment time is short, the energy consumption is low, and the cost is greatly saved.

The invention discloses a process control method for PBO fiber production. PBO fiber is produced from polyphosphoric acid, phosphorus pentoxide, 4,6-diaminoresorcinol hydrochloride and terephthalic acid as raw materials by degassing, pre-polymerization, post-polymerization and spinning, the terephthalic acid is respectively poured into the three stages of raw material mixing, pre-polymerization and post-polymerization for production. In the production process, and the sum of molar amounts of the terephthalic acid injected in the three times is guaranteed to be equal to the molar amount of the4,6-diaminoresorcinol hydrochloride injected during the raw material mixing stage. According to the method, the polymerization production of the PBO fiber can be completed in the manner of multiple times of feeding of the TPA (terephthalic acid), the solution tressure of the TPA during the initial feeding is reduced, the process time of the mixing, the degassing, and the pre-polymerizing in the early stage can be shortened, and the performance of subsequent PBO fiber products can be improved.

A method for the destruction of a target gas, the method including: a) compressing at a first pressure a mixture of air and target gas to produce a compressed target gas mixture; b) destroying the target gas by combusting the compressed target gas mixture with diesel fuel in a forced-induction internal combustion engine, at a combustion pressure greater than the first pressure in the turbocharger, to produce an oxidised exhaust gas, the combustion occurring while maintaining a load on the diesel engine with a load bank; and c) processing the oxidised exhaust gas to produce a vent gas for venting to atmosphere where the vent gas includes substantially no target gas.

The invention provides a factorized circulating water high-density three-dimensional ecological breeding system which comprises a plurality of breeding tanks, a breeding circulating water treating system communicated with the breeding tanks, and three-dimensional spraying aquaculture columns arranged on the upper portions of the breeding tanks. The factorized circulating water high-density three-dimensional ecological breeding system is characterized in that the breeding circulating water treating system comprises a water collection tank, a water pump, a microfilter, a decarburization area, a nitration area, a degassing area, an ultraviolet sterilizing area and a temperature adjusting and tempering tank sequentially along a water flow direction, the water collection tank is communicated with the breeding tanks through sewage inlets, and the temperature adjusting and tempering tank is communicated with the three-dimensional spraying aquaculture columns through a clean water outlet and the water pump; a biological filtering area or a low-speed nitration area are arranged between the nitration area and the degassing area; a mud blocking slot is formed between the decarburization area and the nitration area, a plurality of mud-blocking water-passing holes are formed in a wall of the decarburization area on one side of the mud blocking slot, a plurality of nitration water incoming holes are formed in a wall of the nitration area on the other side of the mud blocking slot, and bottom height of the mud-blocking water-passing holes is greater than height of a mud discharging pipe in the decarburization area. The factorized circulating water high-density three-dimensional ecological breeding system is low in investment, high in space utilization rate, healthy and efficient.

The invention discloses an ultrasonic metallurgical device for an RH refining furnace, which comprises an outer frame (2) connected with a riser (1) of the RH refining furnace, wherein an ultrasonic generator (6) and an ultrasonic working head (7) for inputting ultrasonic generated by the ultrasonic generator (6) into the riser (1) are arranged in the outer frame (2); an argon blowing pipe (4) communicated with the riser (1), a surrounding argon blowing pipe (4) and a plurality of argon sealing pipes (5) for hermetic seal are also arranged in the outer frame (2); and the argon blowing pipe (4) and the argon sealing pipes (5) are connected with an argon source after penetrating through the outer frame (2). The metallurgical device can enhance the molten steel circulation efficiency of the RH refining furnace and improve the degassing and inclusion removal effects.

The invention provides a complete rectifying device for regeneration of waste oil, and relates to an oil purifier. According to the complete rectifying device for regeneration of the waste oil, a pretreatment tank, a reaction kettle, a fractionating tower, a distillation tower, a catalytic tower, a reboiling tower, a rectifying tower, a cooling tower, a gas-liquid separator, a semi-finished product tank, a desulfurizing tower, a light oil storage tank, a distillation vacuum pump unit, a filtration vacuum pump unit, a steam-water separator, a buffer tank, a filter tank, a fire isolating tank, an oil spill tank, a pneumatic valve box, a console and a power cabinet are sequentially installed on the ground and a mounting rack of the device, wherein vertical electric heating tubes are arrangedin the reaction kettle, the distillation tower, the catalytic tower, the reboiling tower and the rectifying tower. The device has a scientific and reasonable structure, and the defects in an existingpyrolysis rectifying system for regeneration of the waste oil can be overcome; the vertical electric heating tubes do not scale and get damaged easily, so that types of oil are adjusted and controlledat will, the effect of distillation of the waste oil is improved significantly, and the production cost of waste oil regeneration is reduced; therefore, the device has a promotion value.

The invention discloses a Sr-contained panel solar aluminum alloy plating layer and a preparation method thereof. The plating layer material is prepared by the following raw materials in percentage bymass including 0.3%-0.5% of Sr, 2%-3% of Ti, 10%-20% of Zn, 8%-10% of Si, 0.65%-0.75% of La, 0.1%-0.6% of Ce, 0.2%-0.3% of Zr, and the balance aluminum. The plating layer material is simple in preparation method, excellent in bonding with a basal body and not easy to fall; and the prepared aluminum alloy plating layer is beautiful, excellent in corrosion resistance and wear resistance, high in strength and ductility and high in heat absorption and heat transfer capacity.

The invention relates to the field of polyurethane materials, and discloses a preparation device and method of a modified polyurethane material, the preparation device of the modified polyurethane material comprises: an outer cylinder having a barrel-shaped structure; the heating piece is used for heating. And at least one reaction liquid injection port is arranged. The temperature sensor is used for sensing the temperature in the outer cylinder. And the discharge outlet is communicated with the bottom of the outer cylinder. The embedded barrel is coaxially and rotatably arranged in the outer barrel, and a plurality of through holes are formed in the embedded barrel. The rotating shaft is coaxially and rotatably arranged in the embedded barrel, a transmission structure is arranged between the embedded barrel and the rotating shaft, and a plurality of fan blades are fixedly arranged on the rotating shaft. At least one raw material hopper is arranged. And the driving part is mounted on the outer cylinder through a mounting frame and is connected with the rotating shaft. And the controller is electrically connected with the driving piece, the temperature sensor and the heating piece. The fan blades are matched with the through holes in the direction, and the embedded barrel is matched with the fan blades, so that mixing dissolution, dehydration and degassing can be accelerated.