5results about How to "Improve deoxidation efficiency" patented technology

The invention discloses a Fischer-Tropsch synthesis light oil self-reaction deep deoxidation method, which comprises the following steps of: introducing a Fischer-Tropsch synthesis light distillate oil raw material into a crude deoxidation reaction tower filled with a catalyst, and generating an oxygen-enriched heavy substance with a distillation range of more than 160 DEG C after a light oxygen-containing compound in the tower is subjected to self-reaction; and introducing a product of the crude deoxidation reaction tower into a heavy-throwing rectifying tower, carrying out heavy-cutting treatment, discharging oxygen-enriched heavy oil from the bottom of the tower, introducing light distillate oil at the top of the tower into a deep deoxidation adsorption tower filled with an adsorbent, and carrying out deep deoxidation to obtain Fischer-Tropsch synthesis light distillate oil of which the oxide concentration is less than 0.1 mu g / g from the bottom of the adsorption tower. According to the method, the three towers are connected in series, so that the deep removal of the oxides in the Fischer-Tropsch synthesis light distillate oil is realized with low energy consumption and low cost.

The present invention relates to a photovoltaic water-based soldering flux and a preparation method and application thereof, comprising the following raw materials in parts by weight: 1-5 parts of cosolvent, 0.1-3 parts of wetting agent, 0.1-3 parts of polyethylene glycol, 1-8 parts of activator microcapsules, 0.1-1 parts of antioxidant, and 100 parts of water; wherein the activator microcapsules include capsule cores and capsule materials wrapping the capsule cores, and the capsule cores are composite activators; wherein the composite activator is a composition of an organic acid and a protective agent; the organic acid is a composition of 3-hydroxy-2-naphthoic acid, oleic acid and methylsuccinic acid; the protective agent is a composition of trimethylsiloxane and a quaternary ammonium salt cationic fluorocarbon surfactant. The soldering flux of the present invention uses water as the main solvent, and the soldering flux is more suitable for the preparation of photovoltaic cell chip assemblies with a hot welding temperature of 150-230°C, and the soldering flux can continuously provide activity during welding.

The application discloses a deoxygenation method and a deoxygenation adsorbent for Fischer-Tropsch synthesis oil, and relates to the field of Fischer-Tropsch synthesis oil processing.The deoxygenation method comprises the following steps: introducing Fischer-Tropsch synthesis oil into an adsorption tower filled with the deoxygenation adsorbent, and removing oxygen-containing compounds.The deoxygenation adsorbent is prepared by the following method: step S1, adding an aluminum source, a silicon source and a template agent into a lye, and performing first aging at room temperature; continuously adding the aluminum source and the silicon source, and performing second aging at room temperature; performing crystallization at a predetermined temperature; and filtering and washing the product to obtain a molecular sieve; and step S2, immersing the molecular sieve in a lye, adding a template agent into the lye, and then performing crystallization; and filtering, washing, drying and calcining the product after the crystallization to obtain the deoxygenation adsorbent.The deoxygenation method for Fischer-Tropsch synthesis oil provided by the application significantly improves the quality of Fischer-Tropsch synthesis oil and the economic benefits of subsequent processing by preparing a deoxygenation adsorbent with multiple levels of pores and combining the adsorption tower.

The application discloses a tungsten / molybdenum alloy prepared by in-situ dehydrogenation and deep deoxidization of hydride and a method thereof, and particularly relates to the following steps: tungsten / molybdenum alloy powder and metal hydride are fully mixed according to a hydride addition amount of 1% to 10% of the total mass of the tungsten / molybdenum alloy powder, then the mixture is pressed into a compact, the compact is placed into a sintering furnace, vacuum in the furnace is extracted, the sintering furnace is heated for vacuum degassing, after the first removal of free oxygen and water vapor in the compact is completed, dry hydrogen is introduced into the sintering furnace and the sintering furnace is heated, under the action of negative pressure, hydrogen enters the voids in the compact, after the second removal of oxygen in the compact is completed, the sintering furnace is continuously heated in a stepwise manner and is kept warm, the temperature is increased to above the dehydrogenation temperature of the metal hydride, the third in-situ dehydrogenation and deep deoxidization of the hydride is completed, and finally the sintering furnace is cooled to obtain a low-oxygen tungsten / molybdenum alloy. The preparation method is simple, the deoxidization efficiency is high, the sintering grain can be significantly refined, the oxygen content in the alloy can be reduced, and the material performance can be improved.

The invention relates to the technical field of catalyst preparation, and discloses a nickel-based catalyst as well as a preparation method and application thereof. The nickel-based catalyst contains a carrier, an active component and an auxiliary agent, the active component is Ni elementary substance and nickel oxide; the auxiliary agent is selected from one or more than two of oxides of Zn, Na, Mg, Zr, K and Cu; and the nickel oxide compound is selected from one or more than two of NiO, Ni3O4 and Ni2O3. The nickel-based catalyst has bifunctional activity, and can promote activation of hydrogen while promoting oxygen adsorption, so that the catalytic activity of the nickel-based catalyst is further improved, and the deoxidation efficiency of the catalyst is improved.