4results about How to "Good deoxidation effect" patented technology

The invention provides a grease hydrodeoxygenation catalyst and a preparation method and application thereof, the preparation method comprises the following steps: mixing an aluminum-containing inorganic porous material, an acidic solution, an extrusion aid, a magnesium salt and a nickel salt, then carrying out extrusion molding to obtain a carrier precursor, and drying and roasting the carrier precursor to obtain a hydrodeoxygenation composite carrier; by taking the total weight of the carrier as 100%, the content of the magnesium element is 0.5-10%, and the content of the nickel element is 0.3-2%; dipping the hydrodeoxygenation composite carrier with a dipping solution containing active metal, and then drying and roasting to obtain the grease hydrodeoxygenation catalyst. When the hydrodeoxygenation composite carrier is prepared, magnesium salt and nickel salt are combined, and the hydrodeoxygenation composite carrier with a nickel-doped magnesium aluminate spinel structure can be obtained. The hydrodeoxygenation composite carrier has good hydrothermal stability and mechanical strength. The grease hydrodeoxygenation catalyst prepared by loading an active metal component on the hydrodeoxygenation composite carrier is stable in deoxygenation activity and excellent in deoxygenation effect.

The utility model provides a multi-stage combined deoxidation tank. The multi-stage combined deoxidation tank comprises an upper tank body, a middle tank body and a lower tank body which are connected through flanges, a water inlet is formed in the side wall of the upper tank body; an inner cavity of the first-stage deoxidization chamber is a first-stage deoxidization chamber and is sequentially provided with a gas-liquid separation net, an atomizer, a first-stage deoxidization filler layer and a supporting grating plate I from top to bottom; a diversion unit and a porous liquid homogenizing plate are arranged in an inner cavity of the middle tank body; a sewage outlet and a liquid outlet are formed in the bottom of the lower tank body, and a medicament inlet is formed in the side wall; an inner cavity of the secondary deoxidizing chamber is a secondary deoxidizing chamber, and a secondary deoxidizing filler layer, a supporting grating plate II, a temperature control coil pipe and a supporting grating plate III are sequentially arranged in the secondary deoxidizing chamber from top to bottom. According to the multi-stage combined deoxidation tank, a multi-stage combined mode of vacuum deoxidation and chemical deoxidation is adopted, the deoxidation effect is good, the deoxidation efficiency is high, and the medicament consumption is low; the vertical integrated design of the upper, middle and lower tank bodies is adopted, the structure is compact, and the occupied area is reduced.

The invention provides a hydrodeoxygenation composite carrier and a preparation method and application thereof.The preparation method comprises the steps that an aluminum-containing inorganic porous material, an acid solution, an extrusion aid, magnesium salt and nickel salt are mixed and then subjected to extrusion molding to obtain a carrier precursor, and the carrier precursor is dried and roasted to obtain the hydrodeoxygenation composite carrier; the total weight of the hydrodeoxygenation composite carrier is 100%, and the content of the magnesium element is 0.3-8%, and the content of the nickel element is 0.3-1%. The hydrodeoxygenation composite carrier provided by the invention has hydrothermal resistance and higher mechanical strength, and can improve the hydrothermal stability of a grease hydrodeoxygenation catalyst taking the hydrodeoxygenation composite carrier as a carrier in the hydrodeoxygenation process, thereby improving the deoxygenation effect of the grease hydrodeoxygenation catalyst.

This invention belongs to the field of catalyst technology, specifically relating to a sulfur recovery catalyst and its preparation method. The sulfur recovery catalyst uses Al2O3 as a support and is loaded with TiO2, Fe2O3, and Al. x O y Wherein A is selected from at least one of alkali metals or alkaline earth metals; by mass fraction, TiO2 content is 1wt%~15wt%, Fe2O3 content is 0.5wt%~10wt%, and A... x O y The content is 0.1wt%~5wt%, with the remainder being Al2O3. This invention uses shaped alumina as a support to ensure the mechanical strength and appropriate catalytic activity of the catalyst. Secondly, Ti-Fe-A is formulated into a stable composite complex and loaded onto the support through co-impregnation. Calcination then allows the components to be cross-distributed at the atomic level, ensuring interconnection between reactions. This improves the overall activity of the catalyst and extends its service life.