46results about How to "Good dehydrogenation effect" patented technology

A process for cleaning the molten Al-alloy by removing hydrogen features that the inertial gas is sprayed onto top surface of molten Al-alloy contained in a degassing case via rotating nozzle while onto the bottom of the molten Al-alloy via the air-permeable bricks on the bottom of the degassing case.

The invention relates to a cracking and desulfurization combined method and device and a combined process of catalytic cracking and adsorption desulfurization. The method comprises: (1) contacting heavy oil with a catalytic cracking catalyst to obtain a cracked product; (2) separating the cracked product, the step of obtaining a light fraction with an end boiling point of 215-365°C, (3) contacting the light fraction with a desulfurization catalyst under the condition that the volume ratio of hydrogen to oil is 50-250, and obtaining a desulfurization product , wherein the composition of the desulfurization catalyst includes at least one sulfur-storing metal oxide, and (4) the step of separating the desulfurization product to obtain a liquefied petroleum gas fraction, a gasoline fraction and an optional gas oil fraction. The invention directly performs adsorption desulfurization on liquefied gas and gasoline and / or diesel oil without separation, and separates LPG from gasoline and / or diesel oil after desulfurization, thereby reducing separation cost.

The invention provides a casting method of aluminum alloys. The method comprises four steps of smelting, refining, moulding and pouring. The casting method is characterized by adding specific additive in the casting process and strictly controlling standing time and casting temperature after refining of aluminum pad to enhance purity of aluminum melt and product quality of the aluminum alloys. The tensile strength, pinhole and the like of the castings which are made by the method are obviously enhanced, and defective index of large aluminum alloy castings made by the method is obviously reduced, and the method is applicable to casting of large aluminum castings with high requirements.

The invention discloses an alloy melt hydrogen removal device and an online hydrogen removal method thereof. The device comprises a purifying tube which comprises an alloy melt inflow end and an alloy melt outflow end, Ti-Mo alloy particles are evenly placed into the purifying tube, and the alloy melt outflow end is provided with a first sealing plate used for filtering the Ti-Mo alloy particles. The alloy melt hydrogen removal device is simple in structure, convenient to install and replace, low in hydrogen removal cost, good in hydrogen removal effect and easy to apply to industrial production. Besides, the online hydrogen removal method based on the alloy melt hydrogen removal device is few in process procedure, equipment is convenient to install and replace, and the hydrogen removal effect is good. A magnesium alloy melt prepared by means of the device and the method can remarkably reduce the content of hydrogen in the melt, metallurgical quality of castings is improved, and the device and the method have good application prospect in industrial production.

The invention discloses a uniform drying device for electroplating parts, which comprises a drying device body. The inner cavity of the drying device body is separated by an insulating layer to form a heating cavity and a constant temperature cavity. The compartments are separated; the heating chamber is equipped with a blowing device and a rotating device, the rotating device is fixed at the bottom of the heating chamber, and the blowing device is arranged on both sides of the rotating device; the top of the constant temperature chamber is provided with an infrared heating lamp, The inner wall is provided with a thermal insulation lining, and the material of the thermal insulation lining is nano airgel material. On the basis of the existing drying device, the present invention sets the heating plate in the constant temperature chamber and adds a thermal insulation lining. The thermal insulation lining of the present invention can not only maximize the utilization of heat, but also make the temperature in the drying device It is isolated from the outside world and can absorb water molecules and hydrogen molecules, so that the electroplated parts can get better water and hydrogen removal effects, and the precipitated water vapor or hydrogen will not be adsorbed on the electroplated parts again.

The invention discloses an aluminum alloy refining agent containing lanthanum, erbium and zirconium. The refining agent includes material A and material B, wherein the material A includes the following raw materials in parts by weight: 70-80 parts of NaCl, 50-56 parts of KCl, 12-18 parts of LiCl, 30-36 parts of NaF, 10-12 parts of AlF3, 10-12 parts of sodium fluoroaluminate, 12-18 parts of carbon powder, 20-28 parts of light calcium carbonate, 5-10 parts of CaO; the B material It is composed of C2Cl6, TiO2 and metal in a weight ratio of 5:1.5~2:1~1.5, and the metal is a mixed metal containing Mg, La, Er and Zr; A material and B material are used together, and the weight ratio is 2~4 :1. Using the refining agent of the present invention in the process of refining aluminum alloy can not only realize the removal of hydrogen and oxide inclusions, but also play a role in modifying and refining the structure of aluminum alloy.

The present invention relates to the technical field of a barrel plating production line, in particular to an automated barrel plating production line, including a barrel plating system, a material transfer system, a hydrogen removal system and an automatic control system. The barrel plating system includes an electroplating device, a cleaning device, a drying device, The drying cylinder and the mobile hanger, the material transfer system includes a material transfer device; the material transfer device includes a lifting frame, a support seat and a fixed frame; the upper end of the lifting frame is provided with a first motor, and the output end of the first motor is fixedly connected to a driving roller. The driving roller is wound with a lifting belt for lifting the support seat. The hydrogen removal system includes an oven and a material receiving device; the material receiving device includes a transmission frame, a material basket and a transmission mechanism. The transmission frame is provided with a first pushing mechanism. The parts in the drying cylinder can be automatically poured into the material basket through the material transfer device, and the transmission mechanism will drive the material basket to move to the oven, which effectively improves the automation of the rack plating production line.

The present invention relates to a hydrocarbon oil desulfurization catalyst containing FAU structure and / or BEA structure molecular sieve, its preparation method and the process of hydrocarbon oil desulfurization, based on the weight of the hydrocarbon oil desulfurization catalyst, or based on the weight of sulfur storage metal oxide Based on the total weight of zirconia binder, boron nitride, FAU structure and / or BEA structure molecular sieve and metal promoter, the hydrocarbon oil desulfurization catalyst contains 10-80% by weight of sulfur-storing metal oxides in terms of oxides , 3-35% by weight of zirconia binder based on oxide, 5-40% by weight of boron nitride, 1-20% by weight of FAU structure molecular sieve and / or BEA structure molecular sieve based on dry basis, and metal 5‑30% by weight metal accelerator based on the element. When the hydrocarbon oil desulfurization catalyst provided by the invention is used in a hydrocarbon oil desulfurization process, it has the advantages of high stability, good desulfurization activity and good wear resistance.