338results about How to "Reduce metal content" patented technology

The reformate olefine saturation hydrogenation method includes the following steps: in the presence of one kind of catalyst making the reformate contact with hydrogen gas, its contact temp. is 200-320 deg.C, contact pressure is not less than 0.7 MPa, liquid hourly space velocity is 1-8 hr (-1), and volume ratio of hydrogen and oil is not less than 30. The described catalyst contains tungsten oxide and / or molybdenum oxide, nickel oxide and cobaltous oxide loaded on the alumina, the catalyst is used as reference, the content of the described tungsten oxide and / or molybdenum oxide is 4 wt% to less than 10 wt%, the content is nickel oxide is 1-5 wt%, the content of cobaltous oxide is 0.01-1 wt% and the ratio of total atomicity of nickel and cobalt and total atomicity of nickel, cobalt, tungsten and / or molybdenum is 0.3-0.9.

This invention provides a method for smelting lead-containing waste and copper-containing waste synchronously in a molten pool. The method comprises the following steps: (1) mixing the lead-containing waste, the copper-containing waste, one or more fluxes and carbon-containing reducing agents and then pelletizing, wherein the ratio of the lead-containing waste and copper-containing waste is controlled to achieve the effect that the mass ratio of (Cu+Fe):S is (1.75-4):1; (2) adding the mixture to the smelting equipment (i.e. the molten pool), wherein the mass ratio of water-quenched slag to the furnace burden (i.e. the mixture) is (0.7-5):1, and the smelting temperature is 1050-1250 DEG C; (3) keeping the smelting temperature for 30-180 min for separating and clarifying lead alloy, copper matte and smelting slag. According to the invention, the method can be used for treating the lead-containing waste and the copper-containing waste synchronously; the process is efficient and simple; the direct recovery rates of lead and copper can reach above 75% respectively; the metal content of the generated slag is low, and the slag can be used as a building raw material; the extraction and separation of lead, copper and other elements in the wastes can be realized through one step; the lead is concentrated in the lead alloy, and the copper is concentrated in the copper matte; the product additional value is high; the subsequent processing is simple.

A downhole tool, such as a fracture plug used during a fracture operation, installs in a downhole tubular, such as casing. The tool has a mandrel with a sealing element disposed thereon between uphole and downhole ends. Slip assemblies on the mandrel can be moved to engage the downhole tubular. When the tool is used as a bridge plug, the uphole assembly supports the sealing element compressed, and the downhole assembly supports fluid pressure downhole of the tool. The slip assemblies have inserts composed of at least two materials that are different from one another and are geometrically separate from one another. In addition or as an alternative, the slip assemblies can be composed of at least two different materials that are geometrically separate from one another.

A mass-exchange contact device is proposed, comprising: upper and lower flat ring-shaped trays outwardly attached to a column, a sleeve including sidewalls attached to the trays and having windows made therein with bottom edges in the plane of the lower tray, a barbotage unit connected to the top of sleeve and having orifices in its sidewalls, a movable double-acting valve including two upper and lower plates attached to a rod axially disposed therebetween. The top of barbotage unit includes an ascending limiter of valve's movement, the bottom of sleeve includes a descending limiter of the valve's movement. In some embodiments, the barbotage unit is made as a portion of the sleeve. The height of windows preferably is equal to the height of valve. The proposed design significantly improves device operation for a cyclic mode, reliability, durability, reduces its weight and cost, extends its operational range for steam and liquid loads.

The invention discloses a combined process for delayed coking and hydrotreating, which comprises the following steps that: a coking raw material is heated to enter a coking tower to react, oil gas escapes from the top of the coking tower, gas components and liquid components are separated, and the cycle ratio in a coking process is 0; and the liquid components are mixed with hydrogen to react in ahydrogenation reactor, then the obtained hydrogenated reaction effluent is distilled to obtain hydrogenated naphtha, hydrogenated diesel oil and hydrogenated wax oil, and the hydrogenated wax oil used as a high-quality raw material is fed into a catalytic cracking device or a hydrocracking device. By adopting the process flow of zero circulation of a coking device, the method provided by the invention furthest improves the yield of a liquid product, improves the processing depth of heavy oil, saves a coking fractionating tower, and achieves the aims of optimizing the flow and reducing the investment; and by adopting reasonable graduation of a hydrogenation catalyst, the method can furthest take account of the running period and the refining depth of each coking product fraction.