83results about How to "Speed ​​up the removal process" patented technology

The invention provides an alumina carrier, wherein the average pore diameter of the alumina carrier is 25-35nm; the most probable pore diameter is 21-30nm; and the volume of pores with diameters of 10-60nm is 95-99.8% of the volume of total pores. The invention also provides a preparation method of the alumina carrier, comprising the steps of carrying out molding, drying and roasting on a mixture containing hydrated alumina and water, wherein the hydrated alumina contains pseudo-boehmite and ammonium aluminium carbonate hydroxide. The invention also provides a hydrogenation catalyst containing the alumina carrier and a preparation method thereof. The pore diameters of the alumina carrier provided by the invention are increased, therefore, the abilities of removing and accommodating metals of the hydrogenation catalyst containing the alumina carrier are improved and the hydrogenation catalyst is suitable for hydrogenation and demetalization treatments of inferior residual oil with higher metal content.

Methods and systems are provided for controlling a fuel system in a hybrid vehicle. Before canister purging is stopped by closing a purge valve, a canister vent valve is closed to hold fuel tank vacuum. Then, during a subsequent canister purge, the purge valve is opened before opening the vent valve, allowing canister purge to initiate under fuel tank vacuum conditions.

The invention relates to a power system overvoltage classification method based on a sparse autocoder, and belongs to online monitoring technology in the electrical field. The method comprises the following steps: obtaining a data set composed of waveform data, carrying out standard preprocessing on all waveforms in the data set to limit the data amplitudes of the waveforms between [0.1, 0.9], dividing the preprocessed waveform data set into a training sample set and a test sample set, extracting the features of the training sample set by using the sparse autocoder, and finally classifying the extracted features of the waveform data by using a multivariate logistic regression classifier. The method is used for automatically extracting the features from a large amount of monitored transient voltage and transient current signals in the case of overvoltage by using the sparse autocoder algorithm and classifying the overvoltage by using the features to accelerate the removal and recovery of faults, so as to help to improve the security and reliability of the power system.

The invention discloses an antibacterial composite fiber membrane for removing haze particles and formaldehyde and a preparation method of the antibacterial composite fiber membrane. The membrane is composed of a polymer nanometer fiber layer and a polymer-metal oxide composite superfine fiber layer. The membrane has multiple and efficient air purification functions, and can be persistently antibacterial and remove harmful substances in air, such as haze particles and formaldehyde. The soaping degree is high, the membrane is reusable, and the service life of the membrane is prolonged. After a protective fiber layer or other fiber layers are added to the outer surface of the composite fiber membrane, the composite fiber membrane can be used for masks, air purifiers, clean room air filtration systems, air conditioners and the like. Moreover, the spinning components, the ratio and the number of fiber layers can be adjusted at will so as to meet different functions and demands. The composite fiber membrane has the advantages of low cost, simple preparation process, energy conservation, low consumption and no secondary pollution.

The device (1) has a rotating drivable belt conveyer (2) for transporting the workpieces (13) to be painted. The color spraying robot (6) and the surface spraying machine (8) are configured to paint the side surfaces and top surfaces of the workpiece to be painted. The color spraying robot is configured to paint the contour surfaces lying inside the workpiece to be painted, and is provided with a spray gun (9) which is movable around several axles. The color spraying robot is movable along the supplementary auxiliary axis. An independent claim is included for method for painting workpieces.

A process for producing ammonia synthesis gas from a hydrocarbon-containing feedstock, with steps of primary reforming, secondary reforming with an oxidant stream, and further treatment of the synthesis gas including shift, removal of carbon dioxide and methanation, wherein the synthesis gas delivered by secondary reforming is subject to a medium-temperature shift (MTS) at a temperature between 200 and 350° C., and primary reforming is operated with a steam-to-carbon ratio lower than 2. A corresponding method for revamping an ammonia plant is disclosed, where an existing HTS reactor is modified to operate at medium temperature, or replaced with a new MTS reactor, and the steam-to-carbon ratio in the primary reformer is lowered to a value in the range 1-5-2, thus reducing inert steam in the flow rate trough the equipments of the front-end.

The invention discloses a production scheme of low-solvent residue rhizoma curcumae longae extract. The production scheme comprises the following steps of adding an acid solution in a to-be-processed rhizoma curcumae longae extract crude extract, and carrying out solvent residue removing operation, thus obtaining the low-solvent residue rhizoma curcumae longae extract. The production scheme disclosed by the invention is simple in technology and convenient to operate, the total solvent residue in obtained rhizoma curcumae longae extract is effectively removed to below 10ppm, and the safety of the rhizoma curcumae longae extract which is used as a food additive is increased.

The invention discloses a method for preventing and controlling the landslide risk of a side slope at a mountain road tunnel portal. The method comprises the steps of 1, extending an open cut tunnel out of a landslide risk area of the slide slope, and injecting double-liquid slurry to the bottom of a foundation of the open cut tunnel for reinforcing; 2, adding a foam cushion layer with the thickness ranging from 10cm to 20cm to the outer side of the open cut tunnel, wherein the foam cushion layer is used for buffering impact of backfilled earth and rocks against the open cut tunnel; 3, synchronously backfilling earth and rocks at the two sides of the open cut tunnel till the height of the backfilled earth and rocks at the top of the tunnel is greater than one time the diameter of the tunnel and a lower cut of a sliding face, subjected to landslide, of the side slope is covered; and 4, if other sliding faces exist above the slide face mentioned in step 3, excavating away par of sliding blocks and filling the sliding blocks to the two sides of the open cut tunnel symmetrically and the top of the tunnel, and covering lower cuts of other sliding faces 1m above in height. The method targets at the landslide risk of the side slope of the tunnel portal; the combined mode that the foundation is reinforced, the open cut tunnel is extended, the earth and rocks are synchronously backfilled and part of the sliding blocks are excavated away for filling is adopted; the landslide risk of the side slope is controlled; and the method has the beneficial effects of being low in cost, little in occupied land, high in construction safety and the like.

The invention discloses a water-fire resistant ventilation air methane mixing device, comprising a water storage barrel and a mixing barrel connected with the water storage barrel, wherein the water storage barrel is arranged at the bottom of the mixing barrel; a low-concentration gas intake pipe is arranged on the water storage barrel; a pipe orifice of the intake pipe is merged below the liquid level; at least two ventilation air intake pipes are arranged at the lower part of the mixing barrel; an escape pipe is arranged on the upper wall surface of the mixing barrel; ventilation air entering the mixing barrel forms a circumferential rotational flow by the at least two ventilation air intake pipes. The invention provides the mixing device which is good in mixing effect, high in safety performance and small in fluid pressure loss, and has dewatering and dust removing functions. The device is applicable to mixing of low-concentration gas with ventilation air or air as well as flammable and explosive gas and air.

The invention relates to the field of indoor formaldehyde removal, in particular to a method for removing indoor formaldehyde. Firstly, through heating and humidifying, the indoor formaldehyde is released as much as possible, then by spraying a formaldehyde clearing agent and conducting multiple times of air blowing, formaldehyde is removed through ventilating, after indoor formaldehyde is removed, a formaldehyde inhibitor is sprayed to the place where formaldehyde is prone to being generated to seal formaldehyde, and release of follow-up formaldehyde is reduced.

A spark plug for an internal combustion engine is provided which includes a housing, a porcelain insulator, a center electrode, and an annular ground electrode. The housing has a small-diameter portion which has a smaller inner diameter and defines a front end thereof. The ground electrode is secured to a front end surface of the small-diameter portion and forms a spark gap between itself and an outer periphery of the center electrode. A pocket is formed between the inner periphery of the housing and a portion of the porcelain insulator which is located closer to a front end of the porcelain insulator than the mounting shoulder is. An air vent extends from outside the ground electrode in a radial direction of the spark plug to the pocket to establish communication between the pocket and the combustion chamber of the internal combustion engine.

The invention relates to a cover plate ink remover. The cover plate ink remover comprises the following components in parts by weight: 20-90 parts of a main agent, 5-20 parts of a penetrating agent, 10-30 parts of a mixed acid accelerant, 0.5-10 parts of an oxidation accelerant and 0.1-3 parts of a surfactant, wherein the main agent is at least one of N-methyl pyrrolidone, dimethyl sulfoxide, N,N-dimethylformamide and N,N-dimethylacetamide, and the penetrating agent is at least one of ethylene glycol monobutyl ether, diethylene glycol butyl ether, propylene glycol butyl ether, ethyl acetate, butyl acetate and ethylene glycol phenyl ether. The mixed acid accelerant and the oxidation accelerant are adopted in the removing agent, so that the removing process of the ink is accelerated throughthe double accelerators, and thereby the removing rate of the ink is increased, and the removing agent has extremely high industrial application prospects.

A system and method for nondestructive detection of gas in a sealed container. The system includes a light source housed in a light source housing and configured to emit a light beam for absorption in a substance to be measured, a detector housed in a detector housing and configured to detect the emitted light beam, a zone that accepts one or more of the sealed containers, each container being substantially optically transparent and containing the substance to be measured, the zone located between the detector and the light source, the light source configured to transmit the light beam through the zone, and a light source purging system comprising a light source channel surrounding the light source and positioned between the light source and the detector housing, the light source channel configured to expel purge gas from a purge gas source into the zone.

An internal combustion engine has cylinder wall cavities located near the top dead center stroke end to allow optimizing the compression ratio in first stage compression, as function of fuel octane number used. The volume of the cylinder wall cavities is designed to be adjustable, even when the engine is operating. Using a conventional piston motion, the second stage compression becomes accelerated as soon the upper piston ring seals-off the cylinder wall cavities. This is due to the sudden significant reduction in volume. During the power stroke, after the upper piston ring opens the cylinder wall cavities; their fuel content is ignited by second stage combustion products. Because the torque required during accelerated compression is no greater than during first stage compression, stresses in the crankshaft are no more than in conventional spark ignition engines. This allows small displacement engines to be of light weight and to be hand cranked.

The invention provides a pulping method using high-concentrated brine as a cooking medium, and the pulping method comprises the following steps: adding a flocculating agent to the high-concentrated brine, settling, adding an alkali to the high-concentrated brine, and mixing evenly to obtain a cooking liquid; adding a plant fiber raw material to the cooking liquid, then adding a catalyst to the cooking liquid, mixing evenly, heating and cooking the mixed liquid, and extracting pulp black liquor in pulp to obtain the pulp black liquor and target pulp. The pulping method using the high-concentrated brine as the cooking medium can make full use of water resources such as sea water and inland brackish water to avoid competition with resident living water, other industrial water and the like, can also utilize the high salinity wastewater produced by RO treatment technology, only solves the water resource problem of pulping and papermaking, but also solves the wastewater treatment problem ofthe RO treatment technology.

The invention discloses a snow cover fall prevention device for a snow removing type photovoltaic roof, which comprises a snow receiving body and a snow clearing frame.The snow receiving body comprises a support plate, an oblique plate obliquely fixed on one side of the support plate, a plurality of snow breaking sticksfixed between the acute angle ofthe support plate and the oblique plate at intervals, and a plurality of anti-blocking rods moving up and down in the slot at the joint of the support plate and the oblique plate;a plurality of screw holes are formed inthe support plate,the snow clearing frame comprises a frame arranged at the periphery of a solar photovoltaic panel, a spiral brush used for sweeping snow cover on the solar photovoltaic panel toward the snow receiving body, anda driving mechanism used for driving the spiral brush to move along the long side of the frame;and one end of the frame is hinged to the support plate, the other end is supported on a roof, the snowcover can be cleared in time, and the safety hazard caused by the snow falling is prevented.

The invention belongs to a ridge-planting straw crushing and returning machine for ridge-furrow operation. The ridge-planting straw crushing and returning machine comprises a rack, a universal joint transmission shaft, a gearbox, a triangular belt transmission system, a triangular belt tensioning device, a straw crushing cutter roller assembly and rear limiting land wheels. A straw picking plow hook device is arranged on a rear beam of the ridge-planting straw crushing and returning machine, or the straw picking plow hook device is arranged on the front end rack of the rear limiting land wheels of the ridge-planting straw crushing and returning machine. The ridge-planting straw crushing and returning machine can mechanically complete the collecting and crushing operation of straw in fieldfurrows simultaneously and has the advantages of being simple in structure, reasonable in design, low in transformation cost, high in removal and stubble crushing efficiency, good in use effect and capable of saving energy, labor and time.