14results about How to "Solve the clogging problem" patented technology

This invention belongs to the field of polymer synthesis and microchemical technology, and discloses a method for synthesizing hydroxyl-terminated polybutadiene in a continuous flow microchannel reactor. The preparation method includes mixing butadiene, anhydrous ethanol, 30% hydrogen peroxide, and an antioxidant under nitrogen protection to obtain a raw material liquid, which is then pumped into the microchannel reactor via a high-pressure metering pump. The mixture undergoes preheating initiation and polymerization reactions sequentially, with viscosity monitored by an online viscometer. After the reaction, the product is obtained through gas-liquid separation, sedimentation and stratification, washing, vacuum solvent removal, and filtration. This invention utilizes a microchannel reactor, which provides precise temperature control and stable pressure. Segmented temperature control and online viscosity adjustment prevent reactor blockage, resulting in high product conversion and yield, and uniform molecular weight distribution. By adding auxiliary devices to optimize the process, continuous and stable production is achieved, making it more efficient, environmentally friendly, and controllable.

This invention discloses a low-temperature early-strength, low-viscosity liquid accelerator and its compounding and production process, relating to the field of concrete admixture technology. The accelerator is compounded from a basic skeleton component, a rheological stabilizing component, and a low-temperature early-strength component. The basic skeleton component includes an inorganic aluminum salt accelerator, anhydrous magnesium sulfate, diethanolamine, and water; the rheological stabilizing component includes liquid polyaluminum sulfate, an amphoteric internal salt viscosity reducer, and cationic nano-silica sol; the low-temperature early-strength component includes water-soluble organic aluminum salt, zirconium oxysulfate, lithium acetate, and water. This invention improves the rheological stability of the accelerator under low-temperature conditions through the combination of the amphoteric internal salt viscosity reducer and the cationic nano-silica sol; and improves the early strength development ability of the accelerator under low-temperature conditions through the combination of the water-soluble organic aluminum salt, zirconium oxysulfate, and lithium acetate.

The invention belongs to the field of dewatering well construction, and particularly relates to a novel dewatering well structure for hydraulic engineering and a construction method.The construction method specifically comprises the following steps that firstly, in the preparation stage, a detachable filter pipe with a cleaning function is prefabricated, and a multi-dimensional sensing system with a water quality and flow monitoring function is arranged; step 2, pore-forming and mounting: performing pore-forming operation on the precipitation well, reserving a precipitation space at the pore-forming depth, and then assembling detachable filter tubes in sections and lowering the detachable filter tubes into the pores; step 3, filling a filter material, namely filling the filter material between the filter tube and the hole wall by using a material guide device according to a predetermined grading layer by layer, and taking an anti-overhead measure in the filling process to ensure the compactness of the filter material; 4, sealing and connecting: constructing a sealing structure above the filter material layer; 5, operation and maintenance are carried out, wherein pilot operation is carried out on the dewatering well system; and step 6, operation and maintenance: formal precipitation is carried out, and the physical state of the filter tube is diagnosed in real time according to vacuum degree, water level, flow and turbidity data fed back by the sensing system.

The utility model relates to xanthan gum production field relates to a kind of xanthan gum glue liquid filtering device, the utility model includes: shell, stirring subassembly, stainless steel filter screen and elastic scraper subassembly, the stainless steel filter screen is set in shell interior, the shell interior is equipped with filter chamber before filtering and filter chamber after filtering, the shell is equipped with feed inlet, discharge port and slagging port, glue liquid enters filter chamber before filtering from feed inlet, after flowing into filter chamber after filtering and being discharged from discharge port after stainless steel filter screen, the stirring subassembly is installed in shell top and stirring shaft is located in shell interior, the elastic scraper subassembly is spaced apart and set on stirring shaft, and elastic scraper subassembly rotation will impurity in stainless steel filter screen inner wall be scraped off to slagging port, the overall structure of the application is simple, reasonable in design, can realize continuous work, not easy to block, and work efficiency is high.

The invention relates to a large depth-diameter ratio straight-through hole machining process for a tungsten carbide wedge-shaped chopper, which specifically comprises the following steps of: preparing a blank by sequentially adopting the processes of vacuum powder mixing, cold isostatic pressing and vacuum sintering; synchronously spraying electrolyte to a machining area while machining by adopting a red picosecond laser; detecting deflection data of the through hole by utilizing microscopic CT (Computed Tomography) equipment, and performing fixed-point laser correction on a deflection area by adopting low-power laser according to the detection data; polishing the inner wall of the through hole by adopting an electrolytic machining mode; carrying out honing and finishing on residual tiny scratches on the inner wall of the through hole by adopting a diamond micro-wire honing head; and detecting a finished product. According to the method, synchronous composite rough machining is carried out through cooperation of the infrared picosecond laser and the electrolyte, machining and deslagging are synchronous, the problem of deep hole melt blockage is solved fundamentally, and the depth-diameter ratio is gt; and the ultra-large depth-diameter ratio micropores of 100 are efficiently and stably formed.

The invention belongs to the technical field of air purification devices, and particularly relates to an air purification device for chemical raw material preparation, which comprises a tower body, an exhaust pipe for discharging standard gas and a silk screen for removing aerosol in the gas, and the silk screen is mounted in the exhaust pipe. A spraying layer and a filler layer which are used for chemically neutralizing waste gas are also arranged in the tower body; and cleaning assemblies are arranged on the two sides of the silk screen correspondingly, and the two cleaning assemblies are symmetrically distributed. During cleaning, the flushing pipe sprays water to the silk screen for flushing; and meanwhile, the two groups of cleaning seats move on the two sides of the silk screen, so that continuous and flexible mechanical shearing force is applied to the surface of the silk screen by the uniformly distributed rollers, and a hard crystal layer embedded and combined with silk screen fibers can be effectively crushed and stripped. On-line collaborative cleaning of mechanical scraping and hydraulic cleaning is achieved, and the hard scale removal rate is remarkably increased. Therefore, manpower and shutdown are reduced, the purification treatment effect on waste gas during preparation of chemical raw materials is ensured, and the production continuity is ensured.

The invention provides a nozzle cleaning device and a nozzle cleaning method. The nozzle cleaning device comprises a cleaning cavity, at least one tangential fluid inlet formed in the side wall of the cleaning cavity, and an upper liquid outlet. A vortex acceleration area with the inner diameter shrinking from bottom to top is formed in the cleaning cavity, and the tip end of the nozzle is located in the vortex acceleration area when used. According to the technical scheme, the vortex rotating at a high speed is formed in the cleaning cavity, and the fluid is accelerated in the vortex acceleration area, so that the tip of the nozzle arranged in the vortex acceleration area is actively and powerfully scoured, and attached residues are efficiently stripped and removed. According to the scheme, the technical problem that the precision nozzle is easily blocked due to dry and solid residues in the temporary storage period can be effectively solved, the process precision is ensured, and the operation stability and the production efficiency of equipment are improved.

This invention discloses a pretreatment device and method for printing wastewater based on dynamic winding, comprising a tank and a top cover disposed on the top of the tank. A filter cylinder is disposed inside the tank, an inlet pipe is disposed on the top cover, an outlet is disposed on the side wall of the tank, and a drain outlet is disposed at the bottom. A rotating sleeve shaft is rotatably connected to the top cover, and a scraper is disposed on the side wall of the rotating sleeve shaft. A scraper blade is disposed at the end of the scraper blade, contacting the inner wall of the filter cylinder. A main shaft is rotatably connected inside the rotating sleeve shaft, and a multi-head reciprocating wire groove is formed on the side wall of the main shaft. A movable sleeve is movably connected to the main shaft, and the movable sleeve is threadedly connected to the reciprocating wire groove through a keyway or protrusion disposed in its inner hole. In summary, this invention, through a "scanning-sudden winding" dynamic winding mechanism, actively and efficiently captures and removes paper fibers from wastewater at the source, fundamentally solving the problem of filter clogging. It also achieves automated wastewater discharge and convenient replacement of the winding medium, significantly improving pretreatment efficiency, operational stability, and maintenance convenience.

The invention relates to the technical field of earthquake monitoring, and particularly discloses a high-sulfur artesian well earthquake comprehensive observation system and a use method thereof. The invention aims to solve the technical problems that the dynamic water level observation is influenced by the pressure disturbance of a drainage pipeline and the traditional gas collection device is blocked during the self-flow well observation. The device comprises a drainage system, a gas collection system, a water temperature observation device and a dynamic water level observation device, natural discharge is achieved through a main drainage pipeline, a drainage buffer pool is arranged, a flowmeter is installed in a sunken mode, an exhaust pipe is arranged, and an auxiliary well pipe is connected with a communicating pipe to avoid bubble interference; the gas collection system adopts a cylindrical or umbrella-shaped natural gas collection device and is suitable for observation of different gases. According to the invention, the data quality and stability of dynamic water level, water temperature and gas observation can be improved, the technical problem of blockage of a traditional gas collection device is solved, and the earthquake monitoring capability of the high-sulfur self-flow well is enhanced.

This invention discloses a co-firing biomass gas burner and method, belonging to the technical field of combustion equipment. The burner includes a central duct, an inner secondary duct, and an outer secondary duct, coaxially arranged from the inside out. A pulverized coal concentrator is installed inside the central duct, and its outlet end has a slitted blunt body structure with a central through-hole and an axial slit, used to form a graded pulverized coal gas flow. The biomass gas pipeline is equipped with a mechanical tar reduction structure based on temperature detection and flow rate regulation. Through the cooperation of the pulverized coal concentrator, the slitted blunt body, the secondary air swirl blades, and the guide plate, a series of primary and secondary recirculation zones are formed within the burner, achieving zoned mixing and graded combustion of pulverized coal and biomass gas. This invention solves the technical problems of incomplete co-firing, tar blockage, and low-NOx combustion in existing technologies, improving combustion efficiency, stable combustion performance, and reducing pollutant emissions.

The application provides a supercritical carbon dioxide heat exchange system and a waste heat recovery method, and belongs to the technical field of energy and thermal equipment. The system adopts a differential flow channel design combining a large-pitch channel on the flue gas side and a micro-channel on the carbon dioxide side, and integrates an online pulse soot blowing device taking preheated compressed air as a medium. Meanwhile, the heat exchange core adopts a nickel-based alloy material with smooth surface treatment to inhibit ash adhesion. The heat exchanger can be integrated in a supercritical CO2 Brayton cycle power generation system, soot blowing is triggered by intelligently monitoring pressure drop or temperature difference, and soot blowing is realized without stopping. The application fundamentally solves the problems of blockage and ash deposition of high-efficiency heat exchangers under the working condition of ash-containing flue gas, ensures that the waste heat recovery system can operate long-term, stably and efficiently, and significantly improves the energy utilization efficiency and system economy.

The invention discloses a bionic self-cleaning water filtering core layer and a preparation method and application thereof, and belongs to the technical field of filtering, the bionic self-cleaning water filtering core layer comprises a porous supporting layer, a filtering functional layer and a self-cleaning layer; wherein the filtering functional layer is compounded on the porous supporting layer; the filtering functional layer comprises nanofiber grids which are interwoven with one another and bionic adhesive hydrogel which is filled in the nanofiber grids; the self-cleaning layer comprises a drivable artificial cilia array, and the drivable artificial cilia array vertically penetrates through the filtering function layer. According to the core layer provided by the invention, the filtering efficiency, the self-cleaning capability and the structural stability are remarkably improved through parameterized design, the dependence on a chemical cleaning agent and the need for frequent maintenance are also reduced through the long-acting operation characteristic of the core layer, and the core layer has remarkable environment-friendly and energy-saving advantages while the service life is prolonged.

The invention belongs to the technical field of industrial wastewater treatment, and relates to a beer yeast wastewater treatment method and system based on anaerobic ammoniation and ammonium magnesium phosphate precipitation coupling, and the method comprises the following steps: carrying out anaerobic ammoniation treatment on beer yeast raw wastewater to convert organic nitrogen in the beer yeast raw wastewater into ammonia nitrogen so as to obtain high ammonia nitrogen anaerobic effluent; the method comprises the following steps: mixing high-ammonia-nitrogen anaerobic effluent with beer yeast raw wastewater according to a ratio, so that the molar ratio of N to P in the mixed wastewater is (1.1-1.5): 1; adding magnesium oxide and a pH regulator into the mixed wastewater to generate ammonium magnesium phosphate precipitate; pre-coating a diatomite filter aid pre-coating layer on the surface of a rotary drum of the scraper rotary drum filter; and introducing the mixed wastewater in which the ammonium magnesium phosphate precipitate is generated into the scraper drum filter for filtering. According to the treatment method, nitrogen and phosphorus can be efficiently and synchronously removed, suspended solids can be removed, and nitrogen and phosphorus resources can be recycled.

This invention belongs to the field of inorganic nanofiber materials technology, specifically relating to a highly flexible boron nanofiber (BN) ceramic nanofiber and its preparation method. Using boric acid and melamine as main raw materials, this invention prepares the nanofiber through a complexation reaction, solution preparation, electrospinning, and heat treatment. The raw materials are inexpensive, the process is simple, and it is easy to scale up production. By heating the electrospinning needle at 90-120℃, the viscosity of the precursor needle tip is reduced, preventing premature crystallization of the complex and completely solving the needle clogging problem, ensuring continuous and stable spinning, and improving spinning efficiency and fiber quality. The resulting BN nanofibers are continuous, have uniform diameter, and a smooth surface. The controllable transformation from amorphous BN to highly crystalline hexagonal boron nitride can be achieved by adjusting the heat treatment temperature. The amorphous BN nanofiber felt has extremely low thermal conductivity (≤0.029 W / (m·K)) and excellent compression resilience, making it suitable as a reinforcement for composite materials or directly applicable in high-temperature filtration, high-efficiency heat insulation, and catalyst carriers.