31results about How to "Technical flexibility" patented technology

An improved method and apparatus for auditing database queries, wherein comments are added by a server prior to the server forwarding the queries to the database system. The comments are then used to derive audit information, which is correlated with other audit information in a different server, to produce a more complete audit record.

The invention belongs to the technical field of plant ingredient extraction, and discloses a method for preparing diosgenin from B acid DES (deep eutectic solvent) hydrolysis. Choline chloride and B acid are heated to a molten state so as to obtain a DES; dioscorea zingiberensis rhizome raw material powder, the DES and petroleum ether are added into a reactor; the temperature is raised to 100 to 130 DEG C; stirring and hydrolysis reaction are preformed; reaction liquid is subjected to filtering or centrifugal separation; a liquid petroleum ether phase is taken; petroleum ether recovered through evaporation; the diosgenin in the rest solid phase is extracted by using water saturation normal butanol solution; the normal butanol and the water are recovered through evaporation; the diosgenin is obtained. The characteristic that the B acid DES and the diosgenin can form strong hydrogen bonds is utilized, so that the DES can realize the selective extraction of the diosgenin from the raw materials for hydrolysis. The method has the advantages that the reaction selectivity is good; the pollution is low; the reaction conditions are mild; the problem of high pollution caused by simultaneoushydrolysis of cellulose and starch in the raw materials into sugar in a conventional hydrolysis process can be solved.

The invention discloses a method for preparing guaiacol products by pyrolyzing lignin in a steam-assisted fixed bed, and belongs to the technical field of biomass resource utilization. In this method, lignin is pyrolyzed in a fixed-bed reactor to obtain pyrolysis products; the pyrolysis products are continuously removed by using saturated steam as an extraction solvent to obtain guaiacol products; the pyrolysis temperature is 220 ‑400℃, saturated steam temperature 150‑300℃, saturated steam flow 2.5‑12.5g / min, reaction time 0.5‑2h. The invention realizes the breaking of oxygen-containing ether bonds of lignin components through pyrolysis, realizes continuous removal of pyrolysis products by using saturated steam extraction, improves the yield of liquefied products and selectively prepares guaiacol products. The invention has the advantages of high purity of obtained liquefied product, simple process and easy realization of industrial promotion.

The invention discloses a method for remanufacturing a positive electrode material from a waste lithium ion battery. The method comprises the steps of performing pretreatment on the waste lithium ionbattery to obtain positive electrode waste material powder; and performing low-temperature plasma sintering on the positive electrode waste material powder to obtain a repaired and modified positive electrode material. The method is wide in applicable range and flexible in technology; by breaking through limitation of the conventional high-temperature curing method, the positive electrode waste material powder obtained by pretreatment is sintered through the low-temperature plasma, material lattice repair and reconstruction are intensified, and the positive electrode material is obtained, wherein the active material is subjected to metal doping or metal compound coating and modification; and therefore, the electrochemical performance of the re-manufactured positive electrode active material is obviously improved, so that the method has high market prospect.

The invention relates to a solid fuel prepared by hydrothermal carbonization of an aqueous phase component of biological oil as well as a method thereof. The method comprises the following steps: (1) preparing the aqueous phase component of biological oil; (2) placing the aqueous phase component of biological oil in a high pressure reaction kettle, fastening a kettle cover, and replacing air in the kettle by nitrogen, hydrogen or inert gases; (3) heating to required reaction temperature, stirring, carrying out hydrothermal carbonization at constant temperature for over 2 hours, wherein the hydrothermal carbonization temperature is 100-300 DEG C; and (4) filtering and separating products after reaction, and drying to obtain the solid fuel. Compared with the conventional method for preparing fuels by saccharide and saccharide derivatives of the aqueous phase component of the biological oil, the method provided by the invention has the advantages of low energy consumption, mild reaction condition, simple technical process, easiness in separating reaction products, environment friendliness and the like.

The invention provides a non-noxious treatment method for waste electronic lead-containing glass. The non-noxious treatment method comprises the following process steps: respectively crushing the waste electronic lead-containing glass and anthracite to 0.074-0.5mm, uniformly mixing the waste electronic lead-containing glass and the anthracite to obtain a material mixture, and adding the material mixture into molten low-lead slag melt; and smelting the material mixture for 0.5-1.0 hour at a temperature of 1200-1250 DEG C, thereby obtaining crude lead and reducing slag. The method disclosed by the invention is adopted to treat the lead-containing glass, so that the purity of the crude read is higher than 98%, the lead content of the reducing slag is lower than 2%, and the recovery rate of the lead is higher than 90%. The non-noxious treatment method has the characteristics of being flexible in technology and simple in process, and can sufficiently utilize sensible heat of the molten low-lead slag to realize effective utilization of heat energy while resources are saved; and the non-noxious treatment method is relatively low in industrial cost, and beneficial for enterprises to apply the technology to a simultaneous treatment process of the waste electronic lead-containing glass and the waste lead slag.

A novel tubular belt conveyor comprises a tubular belt, a power traction, a roller a roller frame, and an opening and closing way for the tubular belt, and is characterized in that the rollers (1) with concave curvature are disposed on the open type roller frame (3), a carrying segment and a return segment of the tubular belt are respectively circle hooped in an upper and a lower transmission channels which comprise the rollers or are respectively circle hooped in a left transmission channel and a right transmission channel which are connected with each other or independent from each other; each of the rollers (1) can be composed by a plurality of rolling wheels; the cross-sectional shape of the transmission channels can be various; and a roller shaft can be sleeved with two or a plurality of rollers (1), so that two sets of or a plurality sets of transmission lines are realized. The novel tubular belt conveyor is ingenious in design, natural in method, reasonable in structure, flexible in application, superior in performance, low in cost, and easy in operation, and accordingly is an ideal tubular belt conveyor.

A method for preparing furfural by liquidation of ferric phosphate catalysis bamboo powder comprises the steps of weighing bamboo powder and adding the bamboo powder into a high pressure reactor; adding a mixture of water and tetrahydrofuran as a solvent into the reactor; weighing a catalyst FePO4.2H2O and adding the catalyst into the reactor; weighing NaCl and adding NaCl into the reactor; fastening a lid of the high pressure reactor and using nitrogen, hydrogen or inert gas to replace air in the reactor; heating, stirring, and performing constant temperature liquidation reaction to obtain furfural. The bamboo powder half-fiber ingredient is fully liquefied to obtain a high-yield furfural ingredient. The furfural obtained through the method and the catalyst are separated easily, the process is simple, and industrial popularization is implemented easily.

The related implementation method for SCTP multi-attributive feature comprises: A1. a centralized transmission assembly and SCTP assembly build respectively a transmission and distribution table; A2.the distribution engine module of SCTP sends data from SCTP communication module to the transmission engine module through a transmission interface; and A3. the latter sends data to the relative IP interface for outer communication. This invention improves system networking capacity, has well flexibility, and upgrades conveniently with low cost.