350 results about "Dissolved hydrogen" patented technology

Disclosed is a reactor, a retained catalyst structure, and a method for increasing the rate of decomposition of polysulfides and removal of hydrogen sulfide in liquid sulfur. The reactor, the retained catalyst structure, and the method include a retained catalyst structure arranged and disposed for contacting a first stream and a second stream in a reactor including a catalyst. The catalyst increases the rate of decomposition of polysulfides and facilitates the removal of hydrogen sulfide in the liquid sulfur of the first stream with the second stream. The first stream includes liquid sulfur containing polysulfides and dissolved hydrogen sulfide. The second stream includes an inert gas or a low oxygen-containing gas.

The invention discloses a residual oil hydrotreating method, the method uses a fixed bed radial reactor for residual oil hydrogenation reaction, catalyst bed layers of the fixed bed radial reactor are respectively loaded, from the inside to the outside, with a protective agent, a hydrodemetallization catalyst, a hydrodesulfurization catalyst and a hydrodenitrogenation / carbon residue removal catalyst, raw oil mixed with dissolved hydrogen enters from the reactor bottom via a feed tube for hydrotreating reaction, hydrogenated generation oil is collected by a generation oil collection zone, and then discharged out of the reactor. The method avoids the defects that in the prior art, when the hydrodemetallization activity of a front catalyst of a fixed bed residual oil hydrogenation unit is lost, hydrodemetallization reaction is undertaken completely by a rear catalyst, and the rear catalyst deactivation is accelerated, overall improves the active resource utilization rate of catalysts, and can effectively reduce the varieties and specifications of the catalysts without too much increase of the protective agent, the raw oil can be in stable and long-term operation at the optimum reaction temperature, and temperature increasing operation is not needed for compensation of the catalyst activity.

Provision of, in a process of producing a hydrogenated polymer, which comprises steps of sequentially performing, in the presence of a ruthenium carbene complex, a ring-opening metathesis polymerization reaction of a cyclic olefin and a hydrogenation reaction of a ring-opening metathesis polymer produced by the polymerization reaction to give a hydrogenated polymer, a simple and economic process of obtaining a hydrogenated polymer having an extremely small content of residual ruthenium derived from the ruthenium carbene complex.A process of producing a hydrogenated polymer, which comprises, in the presence of a ruthenium carbene complex, subjecting a cyclic monoolefin and / or a cyclic diolefin to a ring-opening metathesis polymerization, hydrogenating the resulting ring-opening metathesis polymer to give a hydrogenated polymer, and bringing the hydrogenated polymer in contact with a poor solvent of the hydrogenated polymer in the presence of dissolved hydrogen to allow precipitation. As the poor solvent of the hydrogenated polymer, alcohol having 1 to 6 carbon atoms, ketone having 3 to 6 carbon atoms and the like are preferable.