Abstract: Disclosed is a method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid leaching residues by ammonia decarburization. The method comprises: adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of ammonia water-ammonium bicarbonate solution when leaching, and then adding 30-60 kg of slaked lime to per cubic meter of a leached solution for carrying out decarburization and refining treatment. The present invention obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-30 nm), specific surface area of 105 m2/g or up, good fluidity and good dispersity.

Abstract: Disclosed is a method for producing nanometer lithopone from electrolytic zinc acid leaching residue. The method comprises specific steps of: leaching, purifying, carrying out a metathetical reaction, washing, smashing and the like. Through these steps, zinc is selectively leached out by an ammonia-ammonium sulfate process; and iron and arsenic are removed by ammonium persulfate, heavy metal elements such as nickel, copper, lead, cadmium and the like are removed by sulfurization method and zinc powder replacement method; and a metathetical reaction is carried out to obtain an nZnS—BaSO4 crystalline filter cake, the crystalline filter cake is dried and smashed to obtain a nanometer lithopone product. The zinc in the acid leaching residue can be recycled effectively by this method.

Abstract: A mechanical stretching device of a convertible sofa includes left components, right components, a switch component, and a locking spring. The left components are fixedly connected to the right components by fixing components. The switch component is mounted on the left components or on the right components. The left components and the right components respectively include a foot plate, a first foot lever, a second foot lever, a third foot lever, a fourth foot lever, a fifth foot lever, a side plate, a rotating shaft transmission member, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a back member, a calf plate, a first support member, a second support member, a linkage member, a protective member, a seahorse member, and a bottom foot.

Abstract: Device for use in a fluidized bed reactor includes a gas-solid separator communicated with an outlet of the fluidized bed reactor; a vertically arranged damper, a solid outlet of the gas-solid separator communicated with a lower region of the damper, a gas outlet of the gas-solid separator communicated with an upper region of the damper; a fine gas-solid separator, an inlet of the fine gas-solid separator communicated with the upper region of the damper, and a solid outlet of the fine gas-solid separator communicated with the lower region of the damper. Product from the fluidized bed reactor is fed into the preliminary gas-solid separator, most solid catalysts separated and fed into the lower region; the product entraining the rest catalysts is fed into the upper region, and into the fine gas-solid separator, the rest catalysts fed into the lower region; and final product is obtained from the fine gas-solid separator.

Abstract: A fluidized bed reactor is provided, comprising an inlet zone at a lower position, an outlet zone at an upper position, and a reaction zone between the inlet zone and the outlet zone. A guide plate with through holes is disposed in the reaction zone, comprising a dense channel region in an intermediate region thereof and a sparse channel region disposed on a periphery thereof and encompassing the dense channel region. Catalysts in said fluidized bed reactor can be homogeneously distributed in the reaction zone thereof, whereby the reaction efficiency can be improved. A reaction regeneration apparatus comprising said fluidized bed reactor, and a process for preparing olefins from oxygenates and a process for preparing aromatic hydrocarbons from oxygenates using the reaction regeneration apparatus.

Abstract: Biomarkers and methods are disclosed for diagnosing the risk of a myocardial infarction in an individual by measuring the levels of a set of biomarkers in a sample from an individual. A risk score is calculated for the individual by weighting the measured levels of the biomarkers. The risk score then is used to identify whether the individual is likely to experience a myocardial infarction. In addition, kits are disclosed that include a set of reagents for specifically measuring biomarker levels in a sample from an individual.

Abstract: The disclosed invention relates to a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. The disclosed invention also relates to a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.

Abstract: Disclosed is a method for producing a high-purity nanometer zinc oxide from steel plant smoke and dust by ammonia decarburization. The method comprises: leaching with an ammonia water-ammonium carbonate solution as a leaching agent, adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of the leaching agent to obtain a leaching solution, then adding 50-60 kg slaked lime to per cubic meter of the leached solution to carry out decarburization with heating, and carrying out purification and impurity removal and then refining treatment. According to the method, the ammonia process is used for treating smoke and dust, and the existing ammonia process is adaptively improved, the leaching speed and the leaching rate of zinc in the smoke and dust are improved, and the zinc oxide with the purity of more than 99.

Abstract: Disclosed is a method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid leaching residues by ammonia decarburization. The method comprises: adding 0.3-0.5 kg of sodium fluorosilicate to per cubic meter of ammonia water-ammonium bicarbonate solution when leaching, and then adding 30-60 kg of slaked lime to per cubic meter of a leached solution for carrying out decarburization and refining treatment. The present invention obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-30 nm), specific surface area of 105 m2/g or up, good fluidity and good dispersity.

Abstract: Disclosed is a method for producing a nanometer zinc oxide from low-grade zinc oxide ore by ammonia decarburization. The method comprises: taking ammonia water-ammonium bicarbonate solution as a leaching agent; adding 0.3-0.5 kg sodium fluorosilicate to per cubic meter of the leaching agent; leaching low-grade zinc oxide ore with the leaching agent; and adding 50-60 kg slaked lime to per cubic meter of leached solution to carry out decarburization treatment. The obtained nanometer zinc oxide powder has purity of 99.7% or up, uniform particle size distribution (average particle size of 10-28 nm), specific surface area of 107 m2/g or up, good fluidity and good dispersity. The treatment method of the present invention is low in energy consumption and high in efficiency, and the leaching agent can be recycled.

Abstract: Disclosed is a method for producing nanometer lithopone from electrolytic zinc acid leaching residue. The method comprises specific steps of: leaching, purifying, carrying out a metathetical reaction, washing, smashing and the like. Through these steps, zinc is selectively leached out by an ammonia-ammonium sulfate process; and iron and arsenic are removed by ammonium persulfate, heavy metal elements such as nickel, copper, lead, cadmium and the like are removed by sulfurization method and zinc powder replacement method; and a metathetical reaction is carried out to obtain an nZnS—BaSO4 crystalline filter cake, the crystalline filter cake is dried and smashed to obtain a nanometer lithopone product. The zinc in the acid leaching residue can be recycled effectively by this method.

Abstract: A process for increasing the yield of ethylene and propylene, comprising: (1) feeding a feedstock into a reaction zone with a catalyst to produce (i) a product stream and a catalyst to be regenerated; (2) stripping and then dividing the catalyst to be regenerated into at least two parts, wherein a first part is recycled into the reaction zone at a first position, and a second part is regenerated in the regenerator to form a regenerated catalyst and then recycled into the reaction zone at a second position; and (3) controlling the temperature increase in the reaction zone.

Abstract: A mechanical stretching device of a convertible sofa includes left components, right components, a switch component, and a locking spring. The left components are fixedly connected to the right components by fixing components. The switch component is mounted on the left components or on the right components. The left components and the right components respectively include a foot plate, a first foot lever, a second foot lever, a third foot lever, a fourth foot lever, a fifth foot lever, a side plate, a rotating shaft transmission member, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a back member, a calf plate, a first support member, a second support member, a linkage member, a protective member, a seahorse member, and a bottom foot.

Abstract: Disclosed herein are methods for predicting and detecting cancer risk using genetic markers such as somatic genomic alterations (SGA) that are associated with cancer risk. Also disclosed herein are methods for predicting and detecting a risk of esophageal adenocarcinoma (EA) based on the use of SGA that are associated with a risk of EA.

Abstract: Disclosed is a process for converting a reactant composition comprising H2 and CO to a product comprising at least one aliphatic hydrocarbon having at least about 5 carbon atoms, the process comprising: flowing the reactant composition through a microchannel reactor in contact with a Fischer-Tropsch catalyst to convert the reactant composition to the product, the microchannel reactor comprising a plurality of process microchannels containing the catalyst; transferring heat from the process microchannels to a heat exchanger; and removing the product from the microchannel reactor; the process producing at least about 0.5 gram of aliphatic hydrocarbon having at least about 5 carbon atoms per gram of catalyst per hour; the selectivity to methane in the product being less than about 25%. Also disclosed is a supported catalyst comprising Co, and a microchannel reactor comprising at least one process microchannel and at least one adjacent heat exchange zone.

Abstract: Provided is a method that is for producing fuel oil and that can cheaply and highly efficiently produce a fuel oil—or starting material thereof—having as the primary component n-paraffin or isoparaffin from a starting material oil containing a fatty acid alkyl ester, even while reducing hydrogen pressure. The method for producing fuel oil has a step for producing fuel oil having one or both of n-paraffin and isoparaffin as the primary component by contacting hydrogen gas and a starting material oil containing a fatty acid alkyl ester under the condition of a hydrogen pressure of no greater than 1 MPa to a catalyst resulting from supporting on a porous metal oxide support one or more metal elements belonging to group nine or group ten of the periodic table, and one or more group six element oxides belonging to group six of the periodic table. The weight ratio of the group six elements to the metal elements contained in the catalyst is no greater than 1.0 in terms of the metal.

Abstract: Provided is a method that is for producing fuel oil and that is able to cheaply and highly efficiently produce a fuel oil—or starting material thereof—having as the primary component n-paraffin or isoparaffin from a starting material oil containing triglyceride fatty acids, even while reducing hydrogen pressure. The method for producing fuel oil has a step for producing fuel oil having one or both of n-paraffin and isoparaffin as the primary component by contacting hydrogen gas and a starting material oil containing triglyceride fatty acids under the condition of a hydrogen pressure of no greater than 2 MPa to a catalyst resulting from supporting on a porous metal oxide support one or more metal elements belonging to group nine or group ten of the periodic table, and one or more group six element oxides belonging to group six of the periodic table. The weight ratio of the group six elements to the metal elements contained in the catalyst is no greater than 1.0 in terms of the metal.

Abstract: The present invention relates to a method for producing a hydrocarbon-producing catalyst for producing a hydrocarbon from a mixed gas of carbon monoxide and hydrogen and provides a method for producing, with stability and at high productivity, a hydrocarbon-producing catalyst with which the rate of conversion of carbon monoxide to hydrocarbon is high, the methane selectivity is low, the high activity can be maintained over a long period, the desorption of the active metal is unlikely to occur, and the durability is excellent. The method includes a precursor film forming step of putting a sol solution of an active metal compound and a metal oxide precursor in contact with a heated catalyst carrier 2 to form a precursor film on a surface of the catalyst carrier 2, and a hydrolysis step of gelling the precursor film by hydrolysis to form a metal oxide gel film 4, with the active metal 6 dispersed uniformly, on the surface of the catalyst carrier 2.