30results about How to "High removal depth" patented technology

The invention relates to a multi-element alloy getter for purifying krypton and xenon, and a preparation method of the getter, and the getter can be used for solving the problems that the existing getter is poorer in pertinence, insufficient in handling capacity, high in energy consumption, easy in pulverization and short in service life, and the like. The multi-element alloy getter comprises the following components: 50-65% of zirconium, 10-20% of aluminum, 5-10% of iron, 2-10% of titanium, 3-5% of lanthanum, 3-5% of silicon and the balance of unavoidable impurities. The method comprises the steps of pretreatment of alloy simple substances, alloy smelting and alloy crushing. The getter can meet the purity requirement of high-purity krypton and xenon (99.999%), is large in fluctuation ranges of anti-raw gas fluorocarbon and oxygen nitrogen compound, large in raw gas impurity adsorption capacity, high in raw gas impurity removal depth, wide in service temperature range (300-1000 DEG C) and long in service life, and is not pulverized.

The invention discloses a combined process for conversion of residual oil. The combined process comprises the following steps: (1) allowing a residual oil raw material to enter into a solvent deasphalting unit so as to obtain deasphalted oil and de-oiled asphalt; (2) mixing the de-oiled asphalt obtained in step (1) with heavy distillate oil of a catalytic cracking unit and allowing an obtained mixture to enter into a fluidized bed hydrotreatment unit for fluidized bed hydrotreatment; (3) mixing an effluent of fluidized bed hydrotreatment obtained in the step (2) with the deasphalted oil and carrying out fixed bed hydrotreatment, wherein generated oil of an effluent of fixed bed hydrotreatment is used as a raw material for the catalytic cracking unit; and (4) mixing the de-oiled asphalt with a catalytic heavy fraction obtained after dry gas, liquefied gas and catalytic gasoline are separated from an effluent of a catalytic cracking reaction and subjecting an obtained mixture to fluidized bed hydrotreatment. Compared with the prior art, the combined process provided by the invention has the advantages of wide sources of the raw materials, low equipment investment, stable operation, a long operation period and a good synergistic and coordination effect.

The present invention discloses a residual oil hydrogenation treatment and catalytic cracking combination method. According to the method, the residual oil hydrogenation treatment process comprises two hydrogenation protection reactors, wherein the two hydrogenation protection reactors are arranged in parallel connection, the feed material of the first hydrogenation protection reactor is the residual oil raw material, and the feed material of the second hydrogenation protection reactor is the catalytic cracking heavy fraction; the effluents of the two reactors are mixed, and the resulting mixture enters a hydrogenation treatment reaction zone to carry out a hydrogenation reaction; the effluent of the hydrogenation reaction is subjected to gas-liquid separation, wherein the resulting gas phase is circularly adopted for the hydrogenation reaction, and the liquid phase directly enters a catalytic cracking apparatus without fractionation; the effluent of the catalytic cracking reaction is separated to obtain dry gas, liquefied gas, catalytic cracking gasoline, and catalytic cracking heavy fraction after catalytic cracking of the gasoline, wherein the catalytic cracking heavy fraction is adopted as the feed material of the second hydrogenation protection reactor. With the method, the operating period of the residual oil hydrogenation apparatus can be prolonged, the maximum amount of the catalytic cracking gasoline can be produced, and the equipment investment can be saved.

The invention discloses a carbon four-component selective hydrogenation catalyst and a preparation method taking into account the depth of butadiene removal and the yield of 1-butene. The carbon four-component selective hydrogenation catalyst consists of active components, selectivity The active component is Pd, the selective additives are Ru and Ag, and the support carrier is γAl 2 o 3 , CeO 2 -ZrO 2 and attapulgite; the Pd is 0.05% to 1.5% of the mass of the support carrier, the selective additives Ru and Ag are respectively 0.05 to 2% of the mass of the support carrier, and the γAl in the support carrier 2 o 3 , CeO 2 -ZrO 2 , The quality of attapulgite is 50~60%, 30~40%, 10~20% respectively.

The invention relates to a renewable microporous-mesoporous composite material adsorbent, a preparing method thereof and applications of the adsorbent. The method includes steps of firstly preparing a modified FAU molecular sieve secondary unit; preparing a mesoporous gel mixture; mixing the modified FAU molecular sieve secondary unit with the mesoporous gel mixture; then performing microwave crystallization at 60-120 DEG C; washing, centrifuging and drying the mixture; then performing thermal oxidation treatment to remove a demolding agent, namely to prepare a recoverable microporous-mesoporous composite material; and preparing the composite material into the adsorbent having a certain particle size distribution through tabletting molding or extrusion molding or ball rolling molding. Compared with the prior art, the composite material adsorbent has characteristics of a high synthesis speed, low energy consumption, and the like. Compared with alcohol ether adsorbents at present, the composite material adsorbent is high in impurity adsorption depth, high adsorption capacity, and low in heat effect and has good physical and chemical properties.

The invention relates to a multi-element high-activity component carbon monoxide adsorbent as well as a preparation method and application thereof. The multi-element high-activity component carbon monoxide adsorbent is mainly prepared by an active component co-precipitation method; an active component comprises high-valence oxide of Cu, Zn, Mn, Ni and Fe: CuO, ZnO, MnOx, NiO and FeOy as well as dispersing agent Al2O3 powder. The multi-element high-activity component carbon monoxide adsorbent as well as the preparation method and application thereof have the benefits that by utilizing the characteristic of complementary performances of different components, the multiple components reach high-valence states through oxidation, and further, the ability to remove carbon monoxide by chemical adsorption is realized; the effect of a catalyst of the multi-element high-activity component carbon monoxide adsorbent is superior to that of a single or two-component catalyst; the multi-element high-activity component carbon monoxide adsorbent has the advantages of being free from loss of effective component of feed gas, high in removal depth, large in capacity, low in activation temperature, strong in anti-sintering ability, long in service life, high in mechanical strength, hard to pulverize and the like, is suitable for C2H4, C3H6, CH4, H2, N2, He, Ne, Ar, Kr, Xe and deep removal of the carbon monoxide by electron gas, and can be widely applied to large-scale industrial production.

The invention discloses a method for separating nitrate in high-concentration nickel sulfate solution, which belongs to the field of nonferrous metal hydrometallurgy and aims to solve the problem of separating nitrate in high-concentration nickel nitrate. The method applies the resin to the adsorption of nitrate in high-concentration nickel sulfate solution, washes and pretreats the new resin with sulfuric acid solution, and then uses the treated resin to absorb the nitrate in nickel sulfate; uses sulfuric acid solution to analyze the nitrate on the resin , the solution with a nitrate content higher than 2g / l in the analyzed solution is discharged, and sulfuric acid and nitric acid are reused; the analyzed solution with a nitrate content lower than 2g / l enters the next saturated resin analysis. The method of the invention is simple and easy to operate, has high nitrate removal depth, does not introduce any impurities, ensures the purity and high concentration of the nickel sulfate solution in the whole process, does not produce waste water and waste residue, and belongs to green metallurgy.

The invention discloses a preparation method of ammonium bifluoride. The method comprises steps as follows: a, dilute ammonia water and ammonium bifluoride mother liquor are mixed to adsorb gas containing fluorine and silicon, and a mixed solution is obtained; b, the mixed solution and filter-press residues obtained in Step d are mixed for slurry making and filter-press separation, and a filtrate and a silica by-product are obtained; c, ammonia is introduced into the filtrate; d, slurry is subjected to filter-press separation, and an ammonium fluoride filtrate and filter-press residues are obtained; e, the ammonium fluoride filtrate is subjected to vacuum concentration; f, concentrated slurry is dissolved, the pH value of the solution is adjusted with hydrogen fluoride, and cooling crystallization is performed; g, ammonium bifluoride crystals are filtered, separated and dried, and the ammonium bifluoride product is obtained. With the adoption of the method, the utilization rate of fluorine and ammonia is increased, the gas containing fluorine and silicon is changed into the ammonium bifluoride product with the high economic value in the phosphoric acid production process, the production cost is low, the economic benefit is significant, meanwhile, the purity and other indexes of the product meet the requirement for superior products, and the method is suitable to be popularized and applied in the field.