17results about How to "Control concentration" patented technology

The invention belongs to the technical field of air purification, and particularly relates to an activated carbon adsorbent with ultra-high molecular weight polyethylene fibers as a framework and a preparation method of the activated carbon adsorbent. The activated carbon adsorbent is of a porous sheet structure and comprises 85-95 wt% of activated carbon powder, 1-10 wt% of a polymer and 0.2-3.0 wt% of an auxiliary agent, wherein the polymer is ultra-high molecular weight polyethylene or a mixture of ultra-high molecular weight polyethylene and high-density polyethylene; the polymer presents a cross network skeleton structure in a fibrous form, and the active carbon powder and the auxiliary agent are attached to the polymer fiber. The activated carbon adsorbent has the advantages of extremely low dust capacity in the use process, high content of effective components, small bed resistance, high harmful gas adsorption rate and the like.

The utility model relates to the technical field of quantitative bottle caps, in particular to a coffee quantitative bottle cap which comprises a shell cover and a shell which are in running fit, the side, away from the shell cover, of the shell is detachably fixed to a containing bottle, a containing cylinder is arranged between the shell cover and the shell, the containing cylinder is fixed to the shell, and the containing cylinder is connected with the shell. A containing cylinder is arranged in the shell cover, a quantitative cavity is formed in the containing cylinder, a discharging port is formed in the shell cover, a feeding port is formed in the shell, the quantitative cavity can be communicated with the feeding port or the discharging port, and the quantitative cavity cannot be communicated with the feeding port and the discharging port at the same time. The coffee machine has the advantages that quantitative taking of coffee powder is achieved, and therefore the purpose of controlling the concentration of brewed coffee is achieved.

The invention relates to the technical field of reaction kettles, and particularly discloses a high-pressure polymerization reaction kettle which comprises a base and a reaction kettle body, a constant-proportion material preparation mechanism is arranged in the reaction kettle body, the constant-proportion material preparation mechanism comprises a driving motor, and by arranging the constant-proportion material preparation mechanism, the constant-proportion material is prepared by utilizing the driving force of the driving motor. The linkage transmission operation of the chain driving assembly and the transmission assembly is matched, the quantitative feeding unit is driven to achieve fixed-ratio feeding of materials in the stirring tank every time, and meanwhile the raw material lifting assembly achieves lifting feeding operation of raw materials; therefore, synchronous integrated operation of continuous feeding operation of the materials, quantitative storage of the materials, quantitative proportioning operation of the materials and mixing and stirring operation of the polymers is realized, so that the efficiency of raw material preparation operation before chemical polymer preparation is effectively improved, and the concentration of the raw materials is controlled; therefore, the subsequent chemical synthesis reaction is more complete.

The application discloses a pulse joule heat method for lithium-zinc ferrite post-treatment and wave absorption application, and the pulse joule heat method comprises the following steps: a pre-sintered lithium-zinc ferrite material is prepared by using a sintering furnace method; the pre-sintered lithium-zinc ferrite material is wrapped with carbon cloth and clamped between two electrodes of a joule heating device, then direct current is inputted to generate joule heat; in a vacuum environment, the heating temperature is controlled by adjusting the current parameters, and the heating time is controlled by adjusting the current time, so that the lithium-zinc ferrite material is rapidly post-treated. By introducing the pulse joule heating method, the lithium-zinc ferrite material can be rapidly heat-treated in a very short time, the effective regulation of the defect concentration and the electronic structure is realized, and thus the inherent parameters of the lithium-zinc ferrite are effectively improved and the wave absorption performance is improved.

The utility model discloses a hydrogen-burning fuel gas backflow stable-burning premixing condensing boiler which comprises a lower box body and an upper box body, a water cooling wall is communicated between the lower box body and the upper box body, a plurality of water cooling pipes I are arranged in an air inlet, a flow guide frame body is fixedly connected outside the water cooling pipes I, a plurality of water cooling pipes II are arranged on the downstream of the water cooling pipes I, and the water cooling pipes II are communicated with the upper box body. The second water-cooling pipes are located on the downstream of the first gas channel, second gas channels are formed between the second water-cooling pipes and the adjacent flow guide frame bodies, third gas channels are formed between every two adjacent second water-cooling pipes, a plurality of third water-cooling pipes are arranged on the downstream of the second water-cooling pipes, and a plurality of fourth water-cooling pipes are arranged on the downstream of the third water-cooling pipes. A fin is fixedly connected between the water-cooling pipe II and the water-cooling pipe III, and a water-cooling pipe group I, a water-cooling pipe group II and a water-cooling smoke barrier wall are sequentially arranged in the tapered hearth from upstream to downstream. According to the burner, flame combustion is more stable, meanwhile, the high-temperature flame is cooled, tempering is prevented, and generation of nitric oxide is reduced.

This invention relates to the field of deep processing technology of white hyacinth bean, specifically to a method for preparing a compound spleen-strengthening and dampness-removing white hyacinth bean paste. This invention utilizes low-temperature roasting to pretreat a specific ratio of dampness-removing medicinal herbs, including licorice, poria cocos, coix seed, and bitter almond, and prepares a compound decoction rich in dampness-removing components. This decoction is then used as a biological stressor to promote the germination of white hyacinth beans, with its concentration controlled to encourage moderate germination and the production of substances that resist adverse conditions. Simultaneously, leveraging the plant's water absorption capacity during germination, the invention incorporates the dampness-removing components of the compound decoction. Stable solid-state fermentation with pure Rhizopus further enhances the dampness-removing components of the compound white hyacinth bean and fermented soybean. This not only increases the content of major dampness-removing components such as polyphenols, proteins, and polysaccharides in the white hyacinth bean and fermented soybean, but also increases the content of trace dampness-removing substances such as rutin, quercetin, kaempferol, luteolin, and picolinic acid. It also promotes the dissolution of dampness-removing amino acids—alanine and glycine. The dampness-removing compound white hyacinth bean and fermented soybean components are clearly defined, and the content of spleen-strengthening and dampness-removing substances is richer.

The invention discloses a sulfur-fluorine mixed acid evaporation, concentration and separation system, which comprises a mixed acid separation and concentration device used for heating, concentrating and separating sulfur-fluorine mixed acid, cooling obtained hydrofluoric acid steam to prepare hydrofluoric acid, and conveying obtained low-fluorine sulfuric acid to a sulfuric acid fluorine removal device through a pipeline; the sulfuric acid defluorination device is used for heating and separating low-fluorine sulfuric acid and removing fluorine-containing substances in the low-fluorine sulfuric acid, obtained sulfuric acid is conveyed to the sulfuric acid concentration device through a pipeline, and obtained hydrofluoric acid steam is cooled to prepare hydrofluoric acid; and the sulfuric acid concentration device is used for heating and concentrating sulfuric acid, and the obtained concentrated sulfuric acid is reused in the mixed acid separation and concentration device to obtain production water containing trace sulfuric acid. The invention also discloses a sulfur-fluorine mixed acid evaporation, concentration and separation method. According to the method, high-concentration concentrated sulfuric acid can be obtained from the low-concentration sulfur-fluorine mixed acid in the evaporation and concentration process, and comprehensive utilization of F and S resources is achieved.

The utility model relates to the technical field of water electrolysis hydrogen production, and discloses a pH gradient adjusting device which comprises an electrolysis tank, a liquid storage tank and a stirring barrel, the electrolysis tank is communicated with the liquid storage tank through a first water pump and a first water pipe, and the liquid storage tank is communicated with the bottom end of the stirring barrel through a second water pump and a second water pipe. One side of the top of the stirring barrel is communicated with a water inlet pipe, the water inlet pipe is externally connected with water supply equipment, the other side of the top of the stirring barrel is communicated with a feeding pipe, a quantitative discharging mechanism is arranged on one side of the feeding pipe, and a stirring mechanism is arranged in the stirring barrel. The weight of alkaline materials entering the stirring barrel can be controlled by controlling the number of times that the air cylinder drives the quantitative pipe to move back and forth, the amount of water entering the stirring barrel is controlled in cooperation with the liquid level sensor, the concentration of prepared alkaline liquor can be conveniently controlled by workers, and then the PH value in the electrolysis box can be conveniently controlled.

The invention discloses a preparation method of R, R-2, 3-butanediol, which is characterized in that 2, 3-butanedione is used as a raw material, and the preparation of the R, R-2, 3-butanediol is realized through ketoreductase; the method specifically comprises the following operation steps: preparation of immobilized enzyme, construction of a temperature-pH double-gradient reaction system, construction of a coenzyme regeneration system and product separation. The method is used for improving the yield of the R, R-2, 3-butanediol product and improving the purity of the R, R-2, 3-butanediol due to the separation difficulty of the product.

The application provides a clean and efficient electrochemical flow reaction device for vat dyes, which comprises a cathode electrolysis module, an anode electrolysis module and an ion exchange film, the cathode electrolysis module and the anode electrolysis module are arranged on the two sides of the ion exchange film, the outer sides of the cathode electrolysis module and the anode electrolysis module are provided with shell plates, the cathode electrolysis module comprises a cathode functional plate and a cathode plate, the anode electrolysis module comprises an anode functional plate and an anode plate, two pipes for liquid inlet and liquid outlet are arranged on the cathode functional plate and the anode functional plate respectively, the two sides of the ion exchange film are provided with films, the inner sides of the shell plates are provided with insulating plates, and the inner sides of the insulating plates are provided with backing plates. The device has the advantages of simple structure, convenient disassembly, assembly and modification, low cost, easy availability of the materials of the functional plate modules, selection of appropriate functional plates, ingenious design of electrodes, expansion of the electrode plate area, expansion of the electrode area, sufficient contact with the electrolyte, and great improvement of the electrolysis efficiency of the system.

The invention discloses a nutritional composition for assisting in improving symptoms of a patient with propionemia and / or methylmalonemia. The invention provides a nutritional composition. The nutritional composition comprises plant fat powder and nucleotide components, wherein in the nutritional composition, in terms of weight, medium chain triglyceride (MCT) accounts for 20%-40% of the total fatty acids of the nutritional composition, and in addition, in terms of weight of the nutritional composition, the nutritional composition contains 0.01-0.15 part by weight of a nucleotide component. The nutritional composition can significantly reduce the generation of propionic acid and the accumulation of propionic acid abnormal metabolites, effectively controls the concentration of the propionic acid metabolite, and assists in improving the content of the propionic acid abnormal metabolites through the content of MCT and nucleotide, thereby improving the living quality of patients.

The application relates to a four-wheel-drive four-motor bench whole vehicle environment cabin which comprises a cabin body, a fresh air unit is arranged at one end of the outer top surface of the cabin body and is communicated with the inside of the cabin body through an air inlet pipe matched with the fresh air unit; an air treatment box is arranged at the other end of the outer top surface of the cabin body, an air outlet of the air treatment box is communicated with a fan box arranged at the upper front part of the cabin body in series through a pipeline, air inlets of the air treatment box are respectively communicated with two air guide ducts arranged at the lower rear part of the cabin body in parallel through pipelines, and exhaust fans are arranged on the parallel pipelines on the outer top surface of the cabin body; a head-on fan is arranged on the bottom surface of the front part of the cabin body along a long axis, and the head-on fan is supported through a lifting support matched with the head-on fan; and a full-spectrum irradiation system with adjustable illumination angle is suspended on the top surface of the cabin body. The application realizes high-precision temperature field uniformity, solves the temperature and humidity stratification problem of traditional equipment, supports inclination angle adjustment, cooperates with full-spectrum coverage, and simulates a real sunlight environment.

The present application relates to a kind of monocotyledon green wisteria rapid propagation method, using the characteristics of green wisteria specific tissue cell totipotency, under open condition, using liquid medium to induce green wisteria specific site of in vitro leaf split differentiation, produce regenerative root and regenerative bud, finally form plant.The present application aims at the rapid propagation method of green wisteria leaf, without sterile environment, convenient to take material, easy to operate, low in cost, short in period, high in survival rate, with the advantages of high efficiency, economy, easy to scale, factory, etc., in green wisteria rapid seedling, specific material preservation and propagation has greater application value.

The application discloses a method for recycling lithium in leaching solution of waste lithium ion battery and application thereof, and comprises the following steps: removing copper and iron aluminum from the leaching solution of the waste lithium ion battery to obtain a post-removing impurity solution; preparing a calcium sulfate solution; adding sodium fluoride, ammonium fluoride and a dispersing agent into the calcium sulfate solution; heating and reacting the obtained mixed solution; obtaining calcium-doped sodium fluoride crystals after cooling; adding the calcium-doped sodium fluoride crystals into the post-removing impurity solution; performing lithium precipitation under low-speed stirring; and performing solid-liquid separation to obtain lithium fluoride residue and post-lithium precipitation solution. The method uses calcium-doped sodium fluoride solid to precipitate lithium in the leaching solution at one time, so that the lithium in the leaching solution is enriched in the lithium fluoride residue, the recovery rate of the lithium is improved, the content of nickel, cobalt and manganese metals in the lithium fluoride residue is reduced, the difficulty in preparing battery-grade lithium carbonate from the lithium fluoride residue is reduced, and the subsequent treatment process of the nickel, cobalt and manganese metal solution is simplified.

This invention discloses a harmful gas emission device and control method at the bottom of an offshore wind turbine tower, belonging to the field of wind turbine technology. It includes a data acquisition system, a gas concentration sensor, a purification and exhaust assembly, a control system, and a remote database and server. After establishing an exhaust strategy through the data acquisition system, this invention uses intermittent activation of the purification and exhaust assembly for exhaust, effectively shortening the operating time of the assembly, controlling the concentration of harmful gases inside the tower, and preventing the tower bottom from being in a high-concentration environment for extended periods. The gas concentration sensor ensures that the concentration of harmful gases inside the tower remains within a reasonable range. The purification and exhaust assembly employs an innovative flow channel design: an inlet filter to prevent impurities, and an outlet check valve combined with a low-position sealing through-door arrangement, ensuring efficient and directional discharge of harmful gases, preventing backflow of sea winds and re-escape of harmful gases into the tower, thus balancing emission efficiency and equipment protection.

The utility model relates to the technical field of optical fiber laser, specifically relates to a kind of based on phase continuous sweep frequency optical fiber laser, including shell, the inside one side of shell is fixedly installed with the multimode pump transmitter for emitting laser source, the output end of multimode pump transmitter is provided with phase modulator, the other end of phase modulator is provided with first fiber grating, the one side of first fiber grating away from phase modulator is connected with optical fiber body, the other end of optical fiber body is fixedly connected with second fiber grating, the other side of second fiber grating is fixedly connected with the multimode pump coupler of emission gain rear laser.Compared with prior art, the utility model, by being provided with first fiber grating and second fiber grating cooperate optical resonant cavity, and in optical resonant cavity outer wrapping heat pipe, the frequency of stable optical resonant cavity is ensured the stability of laser output frequency, and optical path length drift caused by heat effect can be reduced.

Embodiments of the present application disclose a semiconductor device and a manufacturing method thereof. The semiconductor device comprises a substrate, a channel layer on the substrate, a barrier layer on the channel layer, a two-dimensional electron gas generated at an interface between the channel layer and the barrier layer, a gate structure on the barrier layer, an insulating structure covering the gate structure and covering an upper surface of the barrier layer adjacent to the gate structure, a barrier layer comprising a first part covering the insulating structure and a second part at least partially covering the exposed upper surface of the barrier layer, and a source structure and a drain structure on two sides of the gate structure.