107results about How to "Strong cracking ability" patented technology

The present invention provides a super-stable Y zeolite and the preparation method thereof. The ratio of silicate to aluminum in the super-stable Y zeolite is 6-11. The lattice constant of the zeolite is 2.446 to 2.458 nanometers. The percentage of non-skeleton aluminum in total aluminum in the zeolite is not higher than 30% by weight. The diameter of secondary pores with diameter of 2 to 100 nanometers in the zeolite shows a double probable distribution. The most probable diameter of the secondary pores with comparatively large diameter is 6-15 nanometers. The proportion of secondary pores with diameter between 8 to 100 nanometers in total secondary pores is 35% to 60%. The preparation method of the zeolite includes the step of making the super-stable Y zeolite come into contact with a solution containing organic acids and inorganic acids in the atmosphere of inert gases and/or nitrogen. The modified super-stable Y zeolite provided in the invention is applied to catalytic cracking; therefore the following effects can be realized: the cracking ability of heavy oil is strong, the selectivity of gasoline is high, and the selectivity of dry gas and carbon coke is good.

The invention discloses a kit for extracting nucleic acid from bacteria by using a paramagnetic particle method and an extracting method. The kit comprises a bacteria lysate, a magnetic bead binding solution, a magnetic bead scrubbing solution and a nucleic acid eluent. The bacteria lysate comprises sodium dodecyl sulfate, ethylenediaminetetraacetic acid, tri-hydroxymethyl aminomethane and sodium chloride; the magnetic bead binding solution comprises polyethylene glycol-8000 and sodium chloride; the magnetic bead scrubbing solution comprises ethanol; and the nucleic acid eluent comprises tri-hydroxymethyl aminomethane and ethylenediamine tetraacetic acid. The kit comprises the unique bacteria lysate which has a strong lysis function for the bacteria; and the kit can be used for manual extraction and instrument extraction by using a commercially available nucleic acid isolation machine, high-purity and high-concentration bacteria nucleic acid can be extracted.

The invention relates to a preparation method of a porous active catalytic material, which is characterized in that firstly, an aluminium source and alkali solution are neutralized to form glue at the temperature ranging from the room temperature to 85 DEG C, and a pH value of the formed glue is controlled within a range of 7 to 11; then according to a weight ratio of SiO2 to Al2O3 of 1: (1 to 9), NaY crystallization mother liquor and/or washing filtrate are added into the formed glue solution; aging is carried out for 1 to 5 hours at the temperature ranging from the room temperature to 90 DEG C to obtain solid precipitates; according to a weight ratio of a dry basis to acid to H2O of 1: (0.03 to 0.20): (5 to 30) in the solid precipitates, exchange is carried out for at least 0.2 hour at the temperature ranging from the room temperature to 100 DEG C; content of sodium oxide in the solid precipitates is washed to below 0.3%. The porous active catalytic material obtained by adopting the method provided by the invention has higher cracking performance.

The invention relates to a residue oil hydrotreatment catalyst grading method and a residue oil hydrotreatment method. The residue oil hydrotreatment catalyst grading method includes filling a residue oil hydrotreatment device with a hydrogenation protection catalyst, a hydrodemetallization catalyst, a hydrodesulfurization catalyst and a catalyst for residual carbon removal by hydrogenation in order along a material flow direction. Specifically, the total acid amount of each catalyst along the material flow direction increases gradually, the proportion of Lewis acid in total acid decreases gradually, and the proportion of Bronsted acid in the total acid increases gradually. The residue oil hydrotreatment method comprises injecting residual oil into the residue oil hydrotreatment device to perform hydrotreatment, wherein the residue oil hydrotreatment device is filled with the catalyst according to the grading method. In a residue oil hydrotreatment process, the residue oil hydrotreatment catalyst grading method provided by the invention can significantly improve the residual carbon removal rate.

The olefin cracking catalyst resulting in high diesel oil yield contains phosphorus and RE compositely modified Y-zeolite, or named superstable RE Y-zeolite, in 5-45 wt%. The superstable RE Y-zeolite is prepared with Na zeolite as material and through RE exchange, the first roasting, reaction with RE, phosphorus containing matter and ammonium salt and the second roasting. The catalyst has the recommended components including superstable RE Y-zeolite 5-45 wt%, one or several kinds of other zeolite 0.5-30 wt%, clay 0.5-70 wt%, and high temperature resisting inorganic oxide 1.0-65 wt%, and contains phosphorus 0.3-2.5 wt% and RE oxide 1.5-6.0. The preparation process of the catalyst includes the mixing of the said components, homogenizing, spraying and post-treatment. The catalyst has powerful olefin cracking capacity, high diesel oil yield, low coke yield and powerful heavy oil cracking capacity.

The invention discloses a kit for extracting fecal microbial genome by magnetic bead method and an extraction method thereof, belongs to the field of biotechnology; the technical scheme adopted is; akit for extracting fecal microbial genome by magnetic bead method include lysis fluid, impurity removal reagent, genomic adsorbent and eluent, in buff a, B and C combine lysis microorganisms, the humic acid and other impurities are removed by the unique precipitating solution, then adsorbing genomic DNA with magnetic beads, further removing foreign proteins and salt ions with special buffer G andbuffer H, and finally eluting the purified genomic DNA; a method for extract genomic DNA of faeces microorganism includes such step as extracting genomic DNA of faeces microorganism with high efficiency and sufficient quantity, extracting genomic DNA of faeces microorganism with high quality, extracting genomic DNA of faeces microorganism with simple procedure, high speed, safety and no pollution,shortening extracting time, and can be used for manual operation and automatic platform, and is widely suitable for extracting animal faeces genomic DNA of faeces microorganism with high speed, efficiency and economy for customers, and has wide application prospect.

The invention discloses a method for utilizing residues of catalyst production, comprising the following steps: (1) drying catalyst residues; (2) contacting the material obtained by the step (1) with an ammonium salt solution or alkali metal saline solution to conduct ion exchange and washing, then filtering; (3) roasting the material obtained by the step (2) at 450-750 DEG C, then exchanging, washing and filtering; and (4) mixing the material obtained by the step (3) with molecular sieve residues and water and beating, filtering, drying, and then roasting at 500-700 DEG C to obtain an active carrier; and carrying out beating and spray drying on the active carrier, ultrastable Y-type molecular sieve, alumina binder and clay to obtain a cracking catalyst. The obtained catalytic cracking catalyst has the advantages of high cracking activity, high active stability, and low yields of dry gas and coke.

The invention relates to a catalytic cracking catalyst and a preparation method thereof. The preparation method of the catalyst comprises the following steps of: leading soluble glass and acid to contact to prepare alkaline silicasol with the pH value of 10-11.5 and the SiO2 content of 3-20wt%, mixing the alkaline silicasol and active components, pulping and drying. The pore volume of the cracking catalyst prepared by the preparation method of the catalyst in the invention is higher. The catalyst of the invention has higher capability of heavy oil cracking for catalyzing and cracking the heavy oil.

The invention belongs to the technical field of research and development of Vibrio alginolyticus phages and particularly relates to a wide-lytic-spectrum Vibrio alginolyticus phage, composition thereof, and a kit. The wide-lytic-spectrum Vibrio alginolyticus phage is Vibrio alginolyticus phage VAP7 collected under CCTCC NO: M 2018767. The inventio also discloses application of the Vibrio alginolyticus phage, a Vibrio alginolyticus phage composition, or a reagent or a kit containing the Vibrio alginolyticus phage or the Vibrio alginolyticus phage composition in the killing and/or prevention ofVibrio microbes. The Vibrio alginolyticus phage herein has a wide host range, has high toxicity to host bacteria under low concentration, can well propagate on nonpathogenic bacterial hosts, and is suitable for large-scale industrial production. Good strain resources can be provided for the application of phagotherapy.

The invention relates to a catalytic cracking catalyst as well as a preparation method and application thereof. Based on the dry basis weight of the catalytic cracking catalyst, the catalytic crackingcatalyst comprises the following components in percentage by dry basis weight: 1-25wt% of Y-type molecular sieve, 5-50wt% of mesoporous-rich MFI structure molecular sieve, 1-60wt% of inorganic binderand optionally 0-60wt% of second clay, wherein the inorganic binder comprises a phosphorus-aluminum inorganic binder and/or other inorganic binders. The catalytic cracking catalyst provided by the invention has relatively high ethylene selectivity in a petroleum hydrocarbon catalytic cracking reaction.

The invention discloses a pasteurella bacteriophage, a bacteriophage composition and an application of the pasteurella bacteriophage. The bacteriophage is named as vB_PmuP_PS01, is preserved in ChinaGeneral Microbiological Culture Collection Center on May 15, 2020, and has a preservation number of CGMCC No.19971. The bacteriophage has a relatively strong lysis effect on rabbit-derived pasteurella, can effectively prevent and control pasteurellosis in a rabbit farm and reduce septicemia and hemorrhagic inflammation of rabbits caused by pasteurella multocida, is safe to use, has no side effect,and can solve the problems of antibiotic residues caused by using antibiotics and induction of drug-resistant pasteurella while solving the problem of infection caused by the pasteurella. In addition, the bacteriophage is wide in application and can also be used for preparing rabbit feed additives, environment and feed disinfectants, detection kits and the like.

The invention discloses an environment-friendly modified PVC resin cable sheathing material which comprises the following raw materials in parts by weight: 70-90 parts of PVC resin, 30-40 parts of nanofiber, 10-14 parts of modified nylon materials, 1-1.5 part of sulfur powder, 50-54 parts of white carbon black, 30-40 parts of nano silica, 30-35 parts of organic bentonite, 1.5-2 parts of methylsilicone oil, 0.5-1 part of anti-aging agent MB, 1-1.4 part of anti-aging agent RD, 2-2.4 parts of accelerant CZ, 1.6-2 parts of accelerant D, 1.5-3 parts of barium stearate and 2-3 parts of zinc oxide. The environment-friendly modified PVC resin cable sheathing material is environment-friendly, small in environmental pollution after being buried, and high in tensile strength and tear strength and good in anti-aging property in the using process.

The invention discloses a staphylococcal bacteriophage composition and an application thereof in medicaments for staphylococcal infection diseases. The bacteriophage composition is formed by compounding a staphylococcal bacteriophage vB-SauM-PB67 strain and a staphylococcal bacteriophage vB-SauM-PB93, and also discloses a pharmaceutical composition, feed additive and disinfectant taking the bacteriophage composition as a main active component and an application of the pharmaceutical composition. The bacteriophage composition has a strong lysis effect on bovine staphylococcus and can be used for preventing and treating diseases caused by bovine staphylococcus infection. Compared with single lysis single-strain bacteriophage, the bacteriophage composition greatly widens the sterilization range, increases sterilization activity, and can improve physique and disease resistance of dairy cows. Moreover, the bacteriophage composition is low in cost and is environmentally friendly.

The invention relates to the field of hydrocarbon oil catalytic cracking, and discloses a catalytic cracking catalyst. The catalyst comprises a modified ZSM-5 molecular sieve, a binder and optional clay, on the basis of the dry base weight of the catalyst, the content of the modified ZSM-5 molecular sieve in terms of dry base is 20-60 wt%, the content of the clay in terms of dry base is 0-50 wt%, and the content of the binder in terms of oxide is 10-40 wt%; the modified ZSM-5 molecular sieve comprises a ZSM-5 molecular sieve and alkaline earth metal elements; on the basis of the dry basis weight of the modified ZSM-5 molecular sieve, in terms of oxide, the content of the alkaline earth metal element is 10-30 wt%; and the molar ratio of SiO2 to Al2O3 of the modified ZSM-5 molecular sieve is 15-50. When the catalyst is applied to a cracking reaction, the cracking capability is stronger, the yield of low-carbon olefin is higher, and the propylene selectivity is higher.

The invention discloses a method for producing high-quality gasoline. The method comprises the following steps: heavy oil raw materials are mixed with hydrogen, and the mixture passes through a reaction zone containing a wax oil hydrogenation conversion catalyst for a reaction; b), separation is performed on reaction effluent obtained in step a), and converted gasoline and converted diesel are obtained; c) the converted diesel obtained in step b) is mixed with hydrogen, and the mixture passes through a reactor containing a diesel hydrogenation upgrading catalyst bed layer for a reaction; d), reaction effluent obtained in step c) is separated, and upgraded gasoline and upgraded diesel are obtained; e), the upgraded diesel obtained in step d) is mixed with a conventional catalytic cracking feed material, the mixture is subjected to a catalytic cracking reaction, separation is performed on reaction effluent, and catalytic gasoline is obtained; f), gasoline components obtained in step b),step d) and step e) are blended, and the high-quality gasoline product or a blend component is obtained. The high-quality gasoline product or the gasoline blend component can be obtained by effectively processing the heavy oil raw materials.

The invention provides a kit for extracting genome DNA based on a magnetic material and an application method. The kit comprises a lysis solution, a binding solution, a washing solution, an eluent and a magnetic bead suspension, wherein magnetic beads in the magnetic bead suspension are Fe3O4@UiO-66 composite materials; and the eluent is a TE buffer solution. According to the method, the Fe3O4@UiO-66 composite materials are selected to be used as DNA adsorption materials, a composite material with pores is formed through interaction between zirconium ions and ferroferric oxide, nucleic acid separation is achieved under the effect of a magnetic field through pore adsorption, and great significance is achieved on the research related to nucleic acid extraction. The invention also provides an application method of the kit, and the method has the characteristics of low cost, high extraction efficiency and high purity of extracted nucleic acid, is applicable to bacterial nucleic acid extraction, and can also be applied to nucleic acid extraction of other pathogenic microorganisms and biological tissues.

The invention provides a method for preparing a catalytic cracking catalyst. The method comprises the following steps: (1) deionized water and aluminum binder are mixed, beaten and added with acid and anticoagulant polymerization inhibitor; (2) part of silicon binder and clay are mixed and beaten; (3) molecular sieves and the deionized water are mixed and beaten; (4) serous fluids in steps (1), (2) and (3) are mixed and beaten; (5) a serous fluid obtained in a steps (4) is added with silicon binder, beaten and then added with acid; and (6) the serous fluid in step (5) is dried. The method is used for preparing the cracking catalyst containing silicon binder, can overcome the disadvantages that colloid in a method using silica sol to prepare the catalyst is easy to solidify, loses fluidity and is incapable of spray molding, and is low in preparation cost. The cracking catalyst prepared by the method has the advantages of good wear resistance, low bulk density, large pore volume, large aperture and good heavy oil cracking capability.

The invention relates to a kit and application thereof. Particularly, the kit comprises a cell nucleus separating solution, wherein the cell nucleus separating solution is prepared from 20 to 50 mmol/L of Tris, 0.01 to 0.2 percent of Triton X-100, 1 to 10 mmol/L of EDTA, 5 to 50 mmol/L of MgCl2, and 5 to 50 mmol/L of KCl. Therefore, the kit can be used for effectively pretreating blood, so as to obtain cell nucleus sediments for subsequent treatment.