32results about How to "No entrainment" patented technology

The invention discloses an alloy liquid extrusion casting and forming device which comprises a liquid material chamber (1), a hammerhead (2), a sealing slide way (3), a pouring slot (4), a stationary workbench (71), a sealing cutter and an injection device (76). In the invention has the technical scheme, from bottom to top, an alloy liquid material is firstly injected under low pressure into a die cavity for mold filling, and then extruded under high pressure until the alloy liquid material is cooled, cured and formed into products in the die cavity. By adopting the technical scheme, the invention overcomes the defects of elaborate procedures, low efficiency, high cost, poor quality and great energy consumption existing in the prior art. The provided alloy liquid extrusion casting and forming device and a technical method thereof enable the alloy casting products to have perfect exhausting, no cold lap, sufficient casting, no flash, compact structure, fine and close crystal grain, high mechanical performance and high dimension precision as well as be subject to thermal treatment and welding. Thus, alloy liquid forming production achieves the purposes of high quality, high efficiency, low cost and low energy consumption.

The invention provides an associated gas condensate recovery device which comprises a cylinder body, an upper end seal head welded on the upper end surface of the cylinder body, a lower end seal head welded on the lower end surface of the cylinder body, a transverse gas inlet pipe welded on the upper part of the outer wall of the cylinder body and penetrating the cylinder body, a longitudinal gas outlet pipe arranged on the upper end seal head and far away from the horizontal gas inlet pipe and penetrating the upper end seal head, a longitudinal draining pipe arranged on the bottom of the lower end seal head, and liquid dividing plates arranged in the cylinder body; the inner surface of the upper end seal head is provided with a vertical-direction baffle plate extending downwards along the longitudinal direction; multiple liquid dividing plates are successively arranged on the left side and the right side of the baffle plate from top to bottom and are inclined downwards; gaps are formed between the liquid dividing plates and the bottom of the cylinder body. Therefore, the device can greatly improve the gas-liquid separation rate of associated gas, and ensures the associated gas is not carried with liquids when entering a burner and can be fully burnt.

The invention discloses an alloy liquid extrusion casting forming device which comprises a hammerhead (1), a static die (2), a movable die (3) and a pouring slot (4). The device adopts the technical scheme that a declined and downward funnel-shaped pouring slot occupied by both the movable die and the static die arranged respectively by half is arranged on the parting plane on one side of a vertical die casting mould; a cylinder chamber type feed liquid chamber and the piston type hammerhead with a sealing knife is arranged on the static die; the hammerhead is controlled to be pushed up, and simultaneously the sealing knife seals the pouring slot. Firstly, feed liquid is filled into the a die cavity at high speed with low pressure, then the semisolid feed filled into the die cavity is extruded at low speed with high pressure, and the semisolid feed is gradually condensed to be formed under high-pressure low-speed extrusion. The alloy liquid extrusion casting forming device and the process method thereof integrate full casting functions of low-pressure filling and high-pressure extrusion into a whole, ensure that forming of alloy casting achieves the purposes of no gas entrapment, no cast seam, no mis-run, no forging crack, no fash, compact texture, fine crystal grain, high mechanical property, capability of performing thermal treatment and sealing, high dimensional accuracy, energy saving and low cost.

The invention provides a method for resource utilization of acidic waste water from stone coal. The method comprises the steps of heavy metal recovery, salt enrichment and crystalline magnesium nitrogen double salt, jarosite precipitation, tail water recycling treatment and the like. The stone coal acidic wastewater described in the present invention is firstly separated and recovered from heavy metal ions, and then the magnesium nitrogen double salt and jarosite are respectively obtained by a multi-step crystallization method, so as to realize the efficient separation and recovery of different components in the wastewater and avoid the neutralization and desorption of traditional wastewater. A large amount of waste residue and valuable components produced by the ammonia process cannot be recycled. A variety of high value-added products have been obtained with high purity and no heavy metal entrainment, and the wastewater is returned to the stone coal leaching process after treatment to achieve zero discharge of wastewater . The method of the invention has the advantages of low cost, simple operation, clean and environment-friendly.

The invention discloses a multistage hollow fiber membrane liquid dehumidifying device applicable to a hot and humid area. The multistage hollow fiber membrane liquid dehumidifying device comprises an air inlet system used for conveying air into a room, an exhaust system used for exhausting the air out of the room, a heat pump system and a dehumidifying solution circulation system. The air inlet system comprises an air inlet channel, a fresh air fan and a plurality of hollow fiber membrane dehumidifying assemblies, wherein the fresh air fan and the hollow fiber membrane dehumidifying assemblies are sequentially arranged on the air inlet channel in the air intake direction. The exhaust system comprises an exhaust channel, an exhaust fan and a plurality of hollow fiber membrane regeneration assemblies, wherein the exhaust fan and the hollow fiber membrane regeneration assemblies are sequentially arranged on the exhaust channel in the air exhausting direction. The heat pump assembly comprises a compressor, an expansion valve, a refrigerant storage tank, a plurality of evaporators and a plurality of condensers. The multistage hollow fiber membrane liquid dehumidifying device avoids the gas and liquid entrainment phenomenon, has good mass transfer efficiency, solves the problem of corrosion of a dehumidifying saline solution to a metal heat exchanger by an existing method, reduces bacterium breeding, lowers the regeneration temperature of the solution and increases the energy utilization rate of a system.

The invention discloses equipment capable of achieving vacuum quantitative casting of molten metal. The equipment comprises a mechanical device, a vacuum quantitative casting device, an opening and closing device and a control system; the vacuum quantitative casting comprises a seal container with internal space, a gas filling mechanism, a vacuum mechanism and an exhaust opening; the exhaust opening comprises a liquid draining opening allowing molten metal to be drained, a pipeline allowing gas to pass through is further arranged in the internal space, and passes through the liquid draining opening, the pipeline is provided with a gas exhaust opening allowing gas not in contact with the molten metal to be exhausted, the opening and closing device achieves independent control over the liquid draining opening and the gas exhaust oponeing, that is, the opening and closing device can independently control opening and closing of the liquid draining opening and the gas exhaust opening, it is ensured that during casing of the molten metal, the oxidation and hydrogen absorption of the molten metal can be reduced, gas holes and oxide inclusion of a casting are reduced, and the casting quality is improved.

The invention relates to a preparation method of J acid and a J acid waste water comprehensive treatment and recycling method. The J acid waste water comprehensive treatment and recycling method is as follows: the following treatment is carried out on hydrolysis waste water: (1) 30-40% of the total quantity of the hydrolysis waste water is used in an acidification reaction for preparing 2-naphthylamine-1-sulphonic acid by utilizing sodium 2-naphthylamine-1-sulphonate; (2) extraction and reextraction are carried out on the residual hydrolysis waste water, so that Na2SO4 and extraction waste liquor are obtained, the extraction waste liquor is used in a hydrolysis working procedure in a J acid production process, an extraction agent adopted during extraction is composed of 10-30wt% of complex agent, 30-70wt% of diluent and 5-20wt% of tributyl phosphate, and the complex agent is trioctylamine, or trialkyl tertiary amine or combination of trioctylamine and trialkyl tertiary amine. By adopting the preparation method of the J acid, the cost of water for the J acid and waste water treatment cost can be greatly reduced, and environmental pollution can be reduced.

The invention relates to a preparation method of a solid phosphoric acid catalyst. The preparation method of the solid phosphoric acid catalyst comprises the steps of salt-forming reaction of niobium boron phosphate compound salt, forming of the solid phosphoric acid catalyst, and the like, so that the solid phosphoric acid catalyst is obtained. The invention further discloses a vibration type directional fine powder feeder and a feeding method of the feeder; the feeder and the feeding method are applied to the preparation method of the solid phosphoric acid catalyst. According to the preparation method of the solid phosphoric acid catalyst, the vibration type directional fine powder feeder applied to the preparation method as well as the application of the feeder, the production cost is reduced, and both the activity and the degradation in water of the solid phosphoric acid catalyst are improved, so that the solid phosphoric acid catalyst can be widely applied to large-scale industrial production.

The invention relates to a pouring basin for a stepped pouring system. The pouring basin comprises a basin body and water outlets. The basin body is internally provided with a stop body and divided into a liquid inlet cavity and a liquid outlet cavity. The liquid outlet cavity is internally provided with separation dams and divided into two or more liquid outlet cavity bodies, namely the first liquid outlet cavity body and the second liquid outlet cavity body. The stop body is internally provided with stepped connection channels which enable the liquid inlet cavity to communicate with the liquid outlet cavity. The first stepped connection channel is used for enabling the liquid inlet cavity to communicate with the first liquid outlet cavity body, and the second stepped connection channel is used for enabling the liquid inlet cavity to communicate with the second liquid outlet cavity body. The first water outlet is formed in the bottom of the first liquid outlet cavity body, and the second water outlet is formed in the bottom of the second liquid outlet cavity body. The lower portion of the first water outlet and the lower portion of the second water outlet communicate with corresponding sprues. The invention further relates to an application method of the pouring basin for the stepped pouring system. By means of the pouring basin, the problem that multiple pouring basins are not synchronous in pouring is solved; and the pouring basin is easy to operate and low in cost.

The invention relates to a method extracting high purity n-hexane by integrating rectification and extraction. The method utilizes aromatic hydrocarbon raffinate oil as a raw material and adopts a three-tower technological process which combines continuous rectification and extractive distillation. Firstly, distillate lighter than n-hexane is removed in a rectifying tower, and n-hexane distillate which is around 80% in content is obtained at the bottom of the tower. The distillate at the bottom of the tower is adopted as the raw material of an extractive distillation tower, N-methyl pyrrolidone is adopted as an extracting solvent to be delivered into the extractive distillation tower, and the proportion of the N-methyl pyrrolidone and raw oil is 8:1, after extractive distillation, high purity n-hexane is extracted at the top of the tower by integrating rectification and extraction, and heavy components which are rich in methylcyclopentane and the extracting solvent are at the bottom of the tower. Materials at the bottom of the tower are delivered into a solvent recovery tower, distillate oil which is rich in methylcyclopentane is separated at the top of the tower, and N-methyl pyrrolidone solvent is at the bottom of the tower and sent back to the extractive distillation tower to be recycled. By means of the method, n-hexane content can achieve 99%, no extracting solvent is contained in products, solvent consumption is smaller than 0.1%, one-off yield of n-hexane is larger than 95%, and compared with traditional rectification, energy consumption can be saved over 50%.

An extraction method and an extractant for a denitration process in a H acid production process. First, an extractant is formulated. The extractant comprises a solvent, a diluent, and a cosolvent. The cosolvent is 2-ethylhexyl 2-ethylhexyl phosphate, the solvent is a tertiary amine solvent, and the diluent is one or more of sulfonated kerosene, benzene, or toluene. Subsequently, the extractant is used to extract a denitrate, and a complex layer and an inorganic acid / water layer are formed after extraction. The inorganic acid / water layer is separated and subsequently applied to an H acid segregation step, the complex layer is stripped, a stripping agent is added for stripping to form an organic substance / water phase having a pH of 7-9. The denitrate forms a trisodium salt, the solution is stratified by standing, an organic layer is separated, and a solvent layer is subsequently applied.

The invention is a method for treating coal oil wastewater, and the specific method includes the steps of oil separation precipitation, ammonia steaming, extraction, back extraction, primary A / O, ozone catalytic oxidation, secondary A / O and the like. After removing slick oil and suspended solids through oil separation precipitation, the wastewater enters the ammonia distillation device to remove high-concentration ammonia nitrogen in the wastewater, then adjusts the pH value to 1-2 with inorganic acid, and extracts high-concentration phenolic organic matter in the wastewater with a specially selected extraction agent. The extract phase is back-extracted with lye, recycled after regeneration, and the product is recovered from the back-extraction solution. After the raffinate is neutralized, it enters the first-level A / O biochemical system to remove organic matter and ammonia nitrogen. The first-level A / O effluent enters the ozone catalytic oxidation device and then enters the second-level A / O biochemical system. The domesticated and cultivated microorganisms are used for biochemistry. The secondary A / O effluent is discharged up to standard after coagulation and sedimentation. The method of the invention is a combination method of physical chemistry and biochemistry, and the method is reasonable in design and strong in operability.