31results about How to "Small reaction space" patented technology

The invention belongs to the field of solid waste disposal and resource utilization, and in particular relates to a process for production of biogas by wet method-dry method combined two-stage anaerobic fermentation. Broken solid waste and an inoculum are mixed in a full wet type reactor for wet anaerobic fermentation, the wet anaerobic fermentation period hydraulic retention time (HRT) is 5-20 days, after fermentation processing, a fermentation material can be delivered to a dry method fermentation reactor with an infiltration device at the bottom for dry solid fermentation for production of the biogas, and the process combines the dual advantages of wet method fermentation and dry method fermentation. The fermentation process integrating the advantages of fast mass transfer and easy start-up characteristics of the wet method fermentation and reaction space saving of the dry method fermentation, and the like is disclosed. By combination of biomass multistage decomposition and transformation in the fermentation process and methane producing bacteria group enrichment principle, the wet fermentation process advantage is used, the wet fermentation process is used as a homogeneous inoculation stage of the dry method fermentation process, and the problems of difficult inoculation and slow start of the dry method fermentation can be solved.

The invention discloses a method for preparing a high-crystallinity covalent organic framework membrane by using an ionic liquid-water interface. The method comprises the following steps of: dissolving an aldehyde monomer in a hydrophobic ionic liquid to obtain a solution A; dissolving an amine monomer and an acid catalyst p-toluenesulfonic acid in deionized water to obtain a solution B; transferring the solution A into a reactor, adding deionized water to the surface of the solution A, layering, adding the solution B to the upper part of the deionized water layer, and performing a reaction for more than 3 days in the reactor under the condition of still standing at room temperature, so as tosynthesize the covalent organic framework membrane by using a double-diffusion control mechanism that the hydrogen-bond interaction of the acid catalyst and the amine monomer and the high viscosity of hydrophobic ionic liquid are utilized and the diffusion rates of the two monomers are limited at the same time. The covalent organic framework membrane prepared by the method has very high crystallinity, the specific surface area of themembrane is increased by 4 times compared with that of a covalent organic framework membrane synthesized on a traditional dichloromethane-water interface, and the solvent flux is also increased by 2 times under the condition that dye interception is not influenced.

The invention discloses a reverse spin floating smelting method. Powdery sulfide concentrate and oxygen-containing gas are sprayed into a space of a high-temperature reaction tower through equipment. The oxygen-containing gas is divided into two parts before entering the equipment; the second oxygen-containing gas is sprayed into the reaction tower in an annular rotary flow mode to form a bell-shaped rotary air curtain; the first oxygen-containing gas is converted into rotary jet via the equipment and is injected from the center of the rotary air curtain. In the annular space between the two rotary gas flows, the concentrate enters in the direction deflecting to the center, and is drawn in by the oxygen-containing gas while high-temperature flue gas from the lower portion of the reaction tower is sucked to form two-phase rotary jet of gas-particle mixing. When the sulfide concentrate is lighted at high temperature, the sulfide concentrate generates severe combustion reaction with oxygen and releases flue gas rich in SO2, meanwhile, sulfonium (or metal) and slag containing mixed melt is formed, and finally the sulfonium (or metal) is separated from the slag at the bottom of the reaction tower so as to complete the metallurgy process. The invention further provides the metallurgical equipment and a reverse spin floating smelting nozzle thereof.

The invention discloses a graphene inorganic coating with a pearlescent effect and a preparation method, and belongs to the field of building material coatings, the graphene inorganic coating comprises the following components: inorganic resin, a graphene modified anti-formaldehyde auxiliary agent, a multifunctional auxiliary agent, deionized water, a polymer emulsion, a defoaming agent, a dispersing agent, a rheological auxiliary agent, a thickening auxiliary agent, a pigment filler and pearl powder slurry; and the problems that a coating is insufficient in formaldehyde removal effect, unstable in performance and prone to fading are solved, and the technical problems that the coating contains free formaldehyde and is insufficient in adhesive force and poor in environment-friendly effect are solved.

The invention discloses an integrated ultrasonic external field assisted microchannel reactor for supercritical hydro-thermal synthesis of nanomaterials. The reactor comprises a main body formed by axial butt joint of a plurality of supercritical microchannel reaction modules, wherein the supercritical microchannel reaction modules are provided with a plurality of miniature reaction channels along an axial direction, the miniature reaction channels are connected at the top end or the bottom end of the main body to form a material flow channel in an up-and-down turn-back form, and the up-and-down turn-back form comprises an up-and-down turn-back track in different radial directions and an up-and-down turn-back track in the same radial direction and different circumferential directions. According to the reactor, the number of the supercritical microchannel reaction modules can be determined according to the reaction time of different types of nanoparticles, and reaction time is accurately regulated and controlled; a plurality of reaction processes are integrated in the reactor; under the synergistic effect of a micro-scale multi-process supercritical hydrothermal synthesis reaction and an ultrasonic generator, metal and metal oxide nanopowder with a small particle size and uniform distribution can be synthesized in a green and efficient manner; and meanwhile, particle aggregation is effectively prevented, and the problems of reaction channel blockage and the like are avoided.

The invention belongs to the field of technical operation of soil nutrient form analysis and measurement, and discloses a soil rapidly-available phosphorus measuring method based on the Olsen method.An extracting agent, a molybdenum-antimony stock solution, a comparison reagent, a phosphorus standard solution and a color developing agent are firstly prepared; a to-be-measured solution is preparedthrough sample weighing, reagent adding, oscillation, filtering and the like; a standard curve is drawn through the steps of standard-series suction, reagent adding, water adding, color developing agent adding, absorbance measurement and the like; phosphorus in the to-be-measured solution is measured through the steps of to-be-measured solution suction, water and color developing agent adding, absorbance measurement and the like; and a standard curve regression equation and the soil rapidly-available phosphorus content are calculated. By improving reagent preparation, a reaction system and comparison reaction, operation is simplified, error sources are reduced, operation time is shortened, the types and amount of reagents are reduced, operation is easy and rapid, and the cost is low and saved.

The invention discloses a hydrogen production device. The hydrogen production device, for example, comprises: a vapor generator having a vapor space therein; a hydrogen reactor; at least one steam pipe; a heating part; and a steam output pipe. the hydrogen reactor is internally provided with a hydrogen production space, and the hydrogen production space is filled with a hydrogen production catalyst; wherein the steam generator is arranged outside the hydrogen reactor in a sleeving manner, and the steam space surrounds the hydrogen reactor to form an annular structure; the at least one steam pipe is arranged in the steam space; the heating part is used for heating the steam generator and the hydrogen reactor; and the steam output pipe is connected between the steam generator and the hydrogen reactor, and the steam generator can convey steam to the hydrogen reactor through the steam output pipe. The technical problems that the hydrogen production efficiency is low and the hydrogen production amount is low can be effectively solved.

The invention discloses a high-mixing type continuous rotating reactor, which comprises a shell, a high-mixing type continuous rotating reactor and a high-mixing type continuous rotating reactor, wherein a containing cavity is limited in the shell, and the shell is used as a stator; the rotor is arranged in the containing cavity, the shape of the rotor is matched with the shape of the containing cavity, and a reaction gap is formed between the outer surface of the rotor and the surface of the containing cavity in a spaced mode; the at least one feeding hole is communicated with the reaction gap; the at least one sampling port is communicated with the reaction gap; the gasket placing position is arranged between the shell and the rotor and is used for placing a gasket with a certain thickness, and the reaction gap can be adjusted by adjusting the thickness of a single gasket or selecting the number of the gaskets. The invention also relates to a method for preparing the aluminum salt lithium adsorbent by using the high-mixing continuous rotary reactor.

The invention discloses a speed-increase type concurrent flow rotating spraying type gas washing tower, and belongs to the technical field of washing towers. The speed-increase type concurrent flow rotating spraying type gas washing tower comprises a vertically-arranged air inlet flue and an induced draft fan, gas introduced in the air inlet flue by the induced draft fan is blown from top to bottom, a rotating spraying mechanism is arranged inside the air inlet flue, a rotating spin-drying mechanism is arranged at the lower portion of the air inlet flue, a gas-liquid separating channel is arranged at the bottom of a rotating spin-drying cylinder of the rotating spin-drying mechanism, the gas-liquid separating channel is communicated with an air outlet flue, and a spraying liquid collecting drainage opening is formed in the bottom of the gas-liquid separating channel. Due to the gas and spraying liquid concurrent flow design, the gas flowing resistance is lowered; on the basis of the atomization rotating spraying mode, effective contact between the spraying liquid and gas is increased, rapid gas-liquid separation is achieved by means of the rotating spin-drying mode, and a series of problems that an existing washing tower reaction is not sufficient, the gas flow speed is low, the gas exhaust humidity is high, and the tower structure is huge are solved fundamentally.