83results about How to "Play the role of physical peptization" patented technology

The invention discloses an alumina formed body, a preparation method and an application thereof, and a production forming system. The preparation method comprises the following steps: optionally drying a formed body of a hydrated alumina composition having a phi value being 5 or less and containing hydrated alumina and a compound having at least two proton acceptor sites, and calcining the dried formed body in an oxygen-containing atmosphere in the presence of water steam. The invention also discloses a catalyst having a hydrogenation catalysis effect and using the alumina formed body as a carrier, a preparation method thereof, and a hydrotreatment method. The formed body having a high strength is prepared from hydrated alumina wet gel, so the step for drying the hydrated alumina wet gel is omitted, the total process flow is simplified, the total operating energy consumption is reduced, dust pollution is avoided, and the working environment is improved. The catalyst prepared by adopting the alumina formed body as a carrier has an improved catalysis activity in hydrocarbon oil hydrotreatment.

The invention discloses a halogen-containing alumina molded body and a preparation method and application thereof. The preparation method comprises optionally drying a molded body of a hydrated alumina composition containing hydrated alumina, a compound containing at least two proton acceptor sites and a halogen-containing compound and having the phi value of 5 or less shown in the description, and roasting the molded body in an oxygen-containing atmosphere in the presence of vapor. The invention also discloses a catalyst using the alumina molded body as a carrier and having hydrogenation catalysis effects, a preparation method thereof and a hydrogenation treatment method. The high strength molded body is prepared from hydrated alumina wet gel as a starting raw material so that the hydrated alumina wet gel drying process is avoided. The overall processes are reduced, overall operation energy consumption is reduced, the dust pollution is avoided and the working environment is greatly improved. The catalyst using the alumina molded body as a carrier has high catalytic activity in the hydrotreatment on hydrocarbon oil.

The invention discloses a phosphorous-containing hydrated alumina composition and molded body, a preparation method and application thereof, a catalyst and a preparation method thereof. The composition contains hydrated alumina, a compound containing at least two proton acceptor sites and a boron-containing compound. The composition has the phi value of 5 or less shown in the description. The invention also discloses a catalyst using the molded body of the phosphorous-containing hydrated alumina composition as a carrier and having hydrogenation catalysis effects, a preparation method thereof and a hydrogenation treatment method. The high strength molded body is prepared from hydrated alumina wet gel as a starting raw material so that the hydrated alumina wet gel drying process is avoided.In molded raw material preparation, water for preparation of the molded material from pseudo-boehmite dry glue powder is avoided so that the overall processes are reduced, overall operation energy consumption is reduced, the dust pollution caused by the use of pseudo-boehmite dry glue powder as a raw material is avoided and the working environment is greatly improved.