335results about How to "Efficient dehydration" patented technology

The present invention is an absorbent structure to be used in absorbent articles, having at least a first region for acquisition/distribution of fluid and a second region for storage of fluid. The first region can contain materials which have a relatively high capillary desorption pressure, as the materials in the second region exhibit a sufficiently high capillary absorption pressure so as to still efficiently drain the first region.The first region material has a Capillary Sorption Desorption Height (CSDH 90) of more than 40 cm and the second region material satisfies at least one of following requirements:(a) an absorption capacity of at least 15 g/g at 35 cm in the capsorption test;(b) an absorption capacity of at least 15 g/g at 0 cm in the capsorption test and an absorption efficiency of at least 55% at 40 cm;(c) a Capillary Sorption Absorption height at 50% of its capacity at 0 cm absorption height (CSAH 50) of at least 35 cm in the capsorption test.

The present invention is one kind of thick oil demulsifier and its preparation process, and belongs to the field of petrochemical technology. The present invention features that phenol-amine resin as the initial material is block polymerized with epoxy propane ad epoxy ethane under the action of catalyst to obtain stereo netted macromolecular polyether as the thick oil demulsifier. The polyether as the thick oil demulsifier may be further chain expanded for even high demulsifying effect. The thick oil demulsifier can reach the oil-water interface fast to lower the elasticity and viscosity of the interface film, speed the aggregation of liquid drops and demulsify effectively. The thick oil demulsifier has simple preparation process, is suitable for industrial production, and may be used in the efficient dewatering of oil field produced liquid with different water contents.

The present invention relates to a method for functionalizing porous metal-organic framework materials which have a large surface area and molecular- or nano-scale pores, and which can thus be used for an absorbent, gas storage, a sensor, a membrane, a functional thin film, a catalyst, a catalyst carrier, and the like, to a method for preparing a solid acid catalyst using same, and to a method for evaporating alcohol using the catalyst.

Methods and solutions are provided for removal of the smear layer on prepared tooth and bone surfaces, especially in endodontic environments.

A method for treating a portion of liquid waste manure comprising adding a first reagent to the portion in a first vessel to cause the formation of waste manure flocs of a first size; adding a second reagent to liquid portion to cause growth of the waste manure flocs of the first size into separable waste manure flocs; adding optionally a third reagent to the portion of liquid containing waste manure flocs to cause further growth of the separable waste manure flocs; separating the liquid volume containing separable waste manure flocs into a waste manure sludge and a first filtrate; and dewatering the waste manure sludge in a filtration system comprising a first filter including a first housing, a first displaceable filter medium, and a first displacement actuator disposed between the first housing and the first displaceable filter medium.

The invention discloses a rubbish crushing and sorting device for environmental protection engineering, which comprises a machine body, a feed inlet is arranged at the left end of the upper side of the The rail is connected with the inclined rail contacting the ground, the upper part of the support is fixedly equipped with a feeding motor, and the upper side of the body is provided with a garbage coarse crushing device. It can fully crush and cut the garbage, and can also screen the crushed garbage, and realize the classified collection and treatment of garbage, which greatly improves the efficiency of garbage treatment. Cooling and cooling effectively prolong the service life of the entire device and ensure long-term stable work. In addition, the garbage feeding is completed by the feeding and lifting mechanism. The entire working process does not require manual operation and has a high degree of automation.

The invention provides a nano-fiber-based composite pervaporation membrane and a preparation method thereof. The nano-fiber-based composite pervaporation membrane is characterized by including a basic layer, a middle transitional layer and a surface layer, wherein the basic layer is a nano-fiber porous support layer, the middle transitional layer is a modified oxidized graphene layer, and the surface layer is a separation layer having interfacial polymerization activity. The simple, modified, thickness-controllable, flexible and ultrathin oxidized graphene skin layer serves as the middle transitional layer, the thickness and uniformity of a function barrier layer on the surface of the composite membrane and the interface acting force of a compact separation layer and the middle transitional layer can be rapidly and accurately adjusted and controlled by controlling interfacial polymerization and optimization, and accordingly the pervaporation performance of the composite membrane is enhanced.

The present invention relates to dewatering of an aqueous slurry of calcium carbonate. More particularly, the present invention relates to the use of non-ionic surfactants in dewatering aqueous slurries of an aragonitic precipitated calcium carbonate. Calcium carbonate slurries dewatered using the non-ionic surfactants of the present invention have higher weight percent solids, decreased dispersant demand, and result in higher productivity.

The invention relates to deep dehydration of sludge, in particular to a formula for deep degradation of sludge and an operation method of the formula. The formula comprises steps as follows: preparation of auxiliary materials, primary treatment of the sludge, thermal refining of the sewage, mechanical filter pressing and backflow of filtrate. According to the formula for deep dehydration of the sludge and the operation method of the formula, continuous treatment can be performed, the treatment efficiency is improved, energy is saved, consumption is reduced, the controllability is high, and recycling is realized.

An air dehydration membrane is made of a hydrophilic polymer having a permeability for water vapor which is greater than its permeability for air, and having low selectivity between oxygen and nitrogen. The membrane has a hydrophilic coating, which itself may be a polymer. The coating does not affect the selectivity of the coated membrane with respect to oxygen and nitrogen, but does increase selectivity of the membrane with respect to water vapor. A preferred material for the membrane is polysulfone. Preferred materials for the coating are poly vinyl alcohol and Triton X-100. The membrane is selected such that the dominant mechanism for gas flow through the membrane is Knudsen flow. The membranes are made at low cost, and can outperform existing commercial membranes in either volumetric productivity or product recovery.

The invention provides a compound type sludge dewatering conditioner which comprises the following components in parts by weight: 3-6 parts of ferric trichloride, 3-6 parts of calcium oxide, 1-2 parts of magnesium oxide, 1-4 parts of surfactant and 1-2 parts of sulfuric acid. The compound type sludge dewatering conditioner provided by the invention can realize efficient dewatering of sludge, the conditioning technology is simple and quick, the dosage of the conditioner is small, the moisture content of the dewatered sludge is reduced to below 45%, the pH value is 6-7, foul smell and the problem of capacity increase are avoided, and sludge reduction can be realized; and the compound type sludge dewatering conditioner has good environmental benefits, is favorable for subsequent sludge resource utilization, can be widely applied to the sewage and sludge treatment of the industries such as chemical industry, municipal affairs and the like, and is particularly suitable for treating the domestic sludge of urban sewage plant.

A screw pipe unit intended to cooperate with and at least partly enclose a screw in a plug screw feeder for cellulose chips/pulp is provided. The screw pipe unit comprises a plurality of openings for filtrate dewatered from the chips/pulp in the screw pipe when the plug screw feeder is in operation. The screw pipe is, on at least a portion of its inner surface, provided with bars inclined with respect to the longitudinal axis of the screw pipe. The angle of inclination of the bars decreases in the longitudinal direction, from a first portion of the screw pipe unit with maximum inclination to a second portion of the screw pipe unit with bars substantially parallel to the axis, the second portion being further away from the inlet end of the screw pipe unit than the first portion.

A washer-dryer is provided with: a washing tank (2); a rotating drum (3) which rotates inside the washing tank (2); a dry air passage which circulates dry air inside the washing tank (2) and the rotating drum (3); and a fan (70) which is provided in the dry air passage and which blows the dry air. The washer-dryer implements, in order: a washing step in which laundry which is inside the rotating drum (3) is washed; a water removing step in which water is removed from the laundry, this step being repeated multiple times; and a drying step in which the laundry is brought into contact with the dry air, and dried.; The washer-dryer is provided with a fan control means which, during the multiple repetitions of the water removing step, stops the operation of the fan (70) until the final repetition of the water removing step is initiated, and which initiates the operation of the fan (70) during the final repetition of the water removing step.

The invention discloses a refuse compressor, which comprises a box body, a compression pusher component and a gate component, wherein the compression pusher component and the gate component are arranged in the box body; a box body cavity between the compression pusher component and the gate component forms a compression cavity; one end, adjacent to the gate component, of the box body extends intoa working pit which is positioned under the ground; and the other end of the box body is connected to or pressed against the ground. The refuse compressor has the advantages of high compression efficiency, good compression effect and the like.

The invention discloses a biomass waste residue squeezer which is provided with a power box, a transmission shaft, a bearing seat, a conical screw shaft, a filtering net barrel, a lining net barrel, a reinforcing rib frame, a shell and an anti-skidding cylinder, and is characterized in that: the filtering net barrel, the lining net barrel, the reinforcing rib frame and the shell form a multi-layer combined type conical shell; a feed port is arranged at a big end of the conical shell, and a discharge port is arranged at a small end; the anti-skidding cylinder is arranged at the discharge port at the small end of the conical shell; and the section of the cylinder opening is a regular hexagon. The biomass waste residue squeezer disclosed by the invention is developed and designed based on the biomass raw materials such as papermaking waste residue, and has unique structure, high squeezing efficiency and large dehydration dryness; and the biomass waste residue squeezer not only can be used for dehydrating and drying the papermaking waste residue, but also can realize powerful efficient dehydration of other biomass garbage such as sawdust, waste slurry, sludge and the like, thereby having a wide application range.

The invention discloses a drainage-type muck pond and a multi-dimensional seepage and dehydration method of earth-pressure-balance shield muck. The drainage-type muck pond comprises a pond base used for being loaded with the muck, a sealing structure is arranged in an opening of the upper portion of the pond base and used for sealing the pond base fully loaded with the muck and making an pond baseinner cavity loaded with the muck be sealed, a bottom pipe network used for collecting water seeping downward from the muck from the lower portion is arranged on the bottom of the pond base inner cavity, and a suction and drainage device is connected onto the bottom pipe network, wherein the suction and drainage device is used for sucking outward the water collected in the bottom pipe network andmaking the balanced negative pressure be formed in the sealed cavity so that water in the muck can be forced to seep outward fast. Through the action of the vacuum negative pressure, drainage of themuck to the surrounding and the bottom is forced, and moisture which enters a channel of the suction and drainage device is sucked by the suction and drainage device for being drained outward, so thatthe water content of the muck in the sealed space is lowered, harmless treatment is achieved, and a foundation is laid for resource utilization; the method is suitable for dehydration treatment of all shield construction muck and muck with high water content.

The invention provides a sewage treatment environmental-friendly sludge dehydration device and relates to the field of sewage treatment. The sewage treatment device comprises a device body, wherein asupport plate is arranged at the bottom of the device body; an operation panel is arranged on one side of the support plate; a mounting support block is arranged at the other end of the support plate;a material feeding and discharge conveyer belt is arranged on one side of the operation panel; a driving motor is arranged inside the material feeding and discharge conveyer belt; a sewage treatmentcylinder is arranged at the top of the support plate; the sewage treatment cylinder comprises an outer cylinder and an inner cylinder. At present, for most sludge dehydration devices in the market, moisture inside sludge is evaporated by using a heating method; since the sludge contains a great amount of toxic gases and impurities, material feeding and discharge conveyer belt such as internal fireor even explosion can be easily caused inside the devices when heating is implemented, and meanwhile the problem that sludge treatment is not qualified can be caused since the sludge is treated in asingle treatment mode generally; the problem of time and labor consumption is solved as materials are fed and discharged in a mechanical mode.

The objects of the present invention are to provide a magnetic field molding device, and method for producing a ferrite magnet, or the like, capable of improving yield in a production line and stabilizing product quality, and method for producing a ferrite magnet.

In molding in a magnetic field, the mortar-shaped die 19 provided with a plurality of the cavities 13 is heated by the heater member 20 at a given temperature level, under the control of the controller 23. The temperature level is preferably controlled by the controller 23 at 40° C. or higher as mortar-shaped die 19 temperature T1, sensed by the sensor 22. A molding slurry can be kept at a high temperature level in the cavities 13 by heating the mortar-shaped die 19, and can have high dehydration properties and improve product yield.

The invention discloses an oil purifier for oil used in an anti-explosion boat. The oil purifier for the oil used in the anti-explosion boat is characterized by comprising a bottom plate and an oil inlet portion, a filtering portion, an oil outlet portion and a control portion, wherein the an oil inlet portion, the filtering portion, the oil outlet portion and the control portion are arranged on the bottom plate. The oil inlet portion is provided with an oil pump which is used as oil power, and an oil inlet end of the oil pump is provided with an oil suction filter for primary filtering; and then the filter portion is sequentially provided with a protection filter, a coalescing separator and a fine filter so as to achieve multiple-layer filtering. By adopting the coalescing separator and combining the principle of comprehensive multiple-layer filtering, the oil purifier for the oil used in the anti-explosion boat is capable of achieving high-efficiency dehydration and meeting demands of fine separation and real-time separation, and has the advantages of being small in size, low in energy consumption, little in vibration, long in service life, easy and convenient to operate and maintain, low in operation cost, good in anti-explosion performance, safe and reliable and high in automatic degree.

The invention specifically relates to a dehydrating agent for sludge, and preparation and application thereof, belonging to the field of stabilization and reduction of sludge. The dehydrating agent for sludge comprises, by weight, 28 to 48 parts of an inorganic oxide component and 52 to 72 parts of an organic polymer component. When the dehydrating agent for sludge is used for treating oily sludge, high dehydration efficiency is obtained, and the water content of the oily sludge is reduced to 30 to 50% or below from original 98% or above; for oily sludge with water content of 95% or above, a water phase, a sludge phase and an oil phase of the oily sludge can be separated via homogenization and uniform mixing effect of the dehydrating agent; and a breakthrough is made to most conventional oil-removing and dehydration manners for oily sludge, and a complementary mode is employed in the invention to conduct key operation in reduction of oily sludge, i.e., separation of a water phase, a sludge phase and an oil phase.