149 results about "High water content" patented technology

The invention discloses a follow-up water drive potential tapping method based on flow field comprehensive analysis, and belongs to the technical field of potential tapping of remaining oil in a high-water-content stage in the middle and later periods of oilfield development. The method comprises the following steps: quantitatively identifying a dominant seepage channel based on streamline distribution, an oil saturation field and a water passing multiple of a target oil reservoir; dividing six remaining oil types and determining distribution characteristics of the remaining oil types; pressure system research and reasonable injection-production ratio regulation and control are combined, and differential potential tapping countermeasures for different remaining oil types are provided. According to the method, the development problems of high water content and low recovery degree in the subsequent water flooding stage of polymer flooding are effectively solved, and the oil reservoir recovery efficiency and development benefits can be remarkably improved.

The present application relates to the field of analytical chemistry, and provide a kind of method for detecting complex matrix of agricultural products in guanidine morpholino salt hydrochloride.The extraction solvent of the present application uses acetonitrile+acid+aqueous solution, different acid is selected according to the water content of sample, trifluoroacetic acid is used for high water content sample, and formic acid is used for low water content sample;In purification, pH value is adjusted according to the oil content of sample, ammonia is used to adjust pH to 8.5 for high oil content sample, and pH value can not be adjusted for low oil content sample.In the method, NaCl is not added to make organic phase and aqueous phase in extraction liquid stratified, through the way of extracting three times repeatedly, the recovery rate of the method is guaranteed;And using ultra-high phase liquid chromatography triple quadrupole mass spectrometry technology, guanidine morpholino salt hydrochloride in complex matrix of agricultural products is successfully detected, the extraction method is fast and simple, the quantitative limit of guanidine morpholino salt hydrochloride in tea is 0.1mg / kg, and the quantitative limit in other matrix is 0.05mg / kg, which is suitable for routine analysis, and can meet the quantitative detection requirements of guanidine morpholino salt hydrochloride in complex matrix of agricultural products.

The invention relates to a preparation method and application of low-cost water and fertilizer slow-release functional hydrogel, and belongs to the technical field of new environment-friendly materials.The preparation method comprises the steps that polyacrylonitrile-containing acrylic old clothes and animal bones are smashed, then subjected to compression molding, pre-oxidized in an air atmosphere and finally subjected to a hydrothermal reaction, and the low-cost hydrogel is obtained. The prepared low-cost hydrogel is high in water content, durable in water retention, rich in nitrogen, phosphorus, potassium and other elements necessary for plant growth, long in water and fertilizer slow release time and used for desert control and greening. According to the method, waste such as old clothes and waste bones which are difficult to degrade in the natural environment is prepared into the hydrogel material suitable for plant growth, and the hydrogel material is used for desert greening and desertification control, has economic significance and environmental significance and is relatively feasible.

The application provides a high-mixing amount of construction waste runway structure suitable for a high-water-content silt ground, and can be applied to runways of different grades. The high-mixing amount of construction waste runway structure is located on the high-water-content silt ground and sequentially comprises, from bottom to top, a modified subgrade, a granular cushion, a water-stable lower base layer, a water-stable upper base layer, a composite seal layer and a cement concrete surface layer. Except for the composite seal layer, the materials of the structure layers all contain full replacement or high-mixing amount of construction waste recycled materials; the material types can include brick-concrete type construction waste and cement concrete type construction waste; and according to different structure layer positions, different particle size gradations and particle sizes are used. The airport runway surface structure provided by the application uses construction waste materials to replace natural stone materials such as mountain stone and limestone gravel, and meets the technical requirements of each layer of the runway surface through modification and other treatment methods, which has positive significance for saving natural materials, efficiently recycling solid waste and reducing the construction cost of the runway.

The invention belongs to the technical field of metering, and particularly relates to a three-phase online metering device and a metering method. A three-phase on-line metering device comprises a base, two identical metering tanks and a control unit are arranged above the base, liquid inlet valves are connected between the top side faces of the two metering tanks respectively, liquid outlet valves are connected between the bottom side faces of the two metering tanks respectively, the liquid outlet valves are connected with liquid outlet pipelines, water content analyzers are arranged on the liquid outlet pipelines, and gas phase pipelines are arranged at the tops of the metering tanks. A gas phase flowmeter is arranged on the gas phase pipeline, a first pressure transmitter is further arranged on the upper portion of the metering tank, a second pressure transmitter is further arranged on the lower portion of the metering tank, the control unit comprises a PLC and a display screen, and the PLC is electrically connected with the liquid outlet valve, the liquid inlet valve, the first pressure transmitter, the second pressure transmitter, the water content analyzer and the gas phase flowmeter. According to the invention, through alternate continuous measurement of double-tank metering, accurate metering of oil, gas and water in a single-well oil transportation line with small liquid amount, high water content and unstable gas amount is realized.

The invention discloses a forestry wetland soil remediation sampling device convenient to sample, and relates to the technical field of soil sampling, the forestry wetland soil remediation sampling device comprises a support assembly and a sampling assembly arranged in the support assembly; the sampling assembly comprises a first splicing pipe and a second splicing pipe, and the first splicing pipe and the second splicing pipe can be spliced to form a sampling pipe. The invention relates to a sampling device convenient for sampling and used for forestry wetland soil remediation. In the sampling process, a driving block moves downwards to drive a driving rod to slide in an inserting groove, gear teeth of the driving rod drive an adjusting gear to rotate, and a rotating plate rotates from a horizontal state to a vertical state parallel to the axis of a sampling pipe, so that soil can enter the sampling pipe along the two sides of the rotating plate and fill spaces with different depths; after sampling is completed, the driving block moves upwards to push the driving rod to move reversely, the adjusting gear drives the rotating plate to rotate to the horizontal state, the interior of the sampling pipe is divided into a plurality of independent cavities, flowing and mixing of the high-water-content soil samples are effectively prevented, and the completeness of all layers of samples is ensured.

The present disclosure provides a sintered aluminum foil and a preparation method thereof, the preparation method comprising: performing a post-first aging on an initial sintered aluminum foil; performing a first heat treatment on the initial sintered aluminum foil; performing a microwave heating treatment on the initial sintered aluminum foil; and performing a post-second aging on the initial sintered aluminum foil. By performing the microwave heating treatment, the present disclosure can realize directional heating on the part of the sintered aluminum foil oxide film with high dielectric loss (i.e. the oxide film with high water content), thereby improving the heating efficiency, improving the depolarization effect, making the hydrated aluminum oxide film fully heat and dehydrate and performing crystal type conversion, obtaining an aluminum oxide film with higher dielectric constant, and avoiding the problem of defects in the traditional sintered aluminum foil due to the complex structure and the difficulty of the oxide film to fully crystallize and convert.

The present application aims to provide a lean water composite alkanolamine absorbent for low-concentration CO2 capture, belonging to the technical field of green carbon capture, which is a composite system of mixed alkanolamine-organic physical solvent-water. By regulating the types and proportions of the components, the water content of the system and the solvent regeneration energy consumption are significantly reduced while ensuring high CO2 absorption capacity. The water content of the absorbent is not higher than 20%, and it exhibits good absorption performance under low partial pressure CO2 conditions. The desorption regeneration energy consumption is about 77% lower than that of the same proportion alkanolamine high water content MEA system (MEA:EG:H2O=0.2:0:9.8). In the absorption-desorption cycle process, the absorbent exhibits good cycle stability, and its CO2 absorption performance does not significantly attenuate after multiple cycles. The lean water composite alkanolamine absorbent is suitable for low-concentration CO2 separation application scenarios such as direct air capture.

The objective of this invention is to provide a baking oil composition that can produce bread that is soft, moist, melts easily in the mouth, and has a chewy texture that lasts. In particular, the objective is to provide a baking oil composition that allows for good workability even with dough containing a large amount of water, and produces bread that has good volume after heating and good shape retention. [Solution] The inventors have found that the above problem can be solved by using an oil and fat composition containing a specific amount of psyllium seed gum with a moisture content of 12% by mass or less and a moisture content of 5% by mass or less. In particular, they have found that in bread dough with a high water content, adding the oil and fat at the timing of adding the flour after it has absorbed enough water makes it possible to form a gluten film and suppress the stickiness of the dough.

The application relates to a micro-fracturing sand-prevention filling well completion process. The micro-fracturing sand-prevention filling well completion process comprises the following steps: filling a high-permeability layer with high water content by using a first particle-carrying liquid containing selective proppants; and filling a low-permeability layer with high remaining oil saturation by using a second particle-carrying liquid. The application solves the problem of uneven liquid production profile caused by the prominent interlayer contradiction of loose sandstone reservoirs, can effectively improve the liquid production profile, solve the interlayer contradiction, release the productivity of the production well and improve the effect of water control and oil increase.

The utility model relates to the technical field of drying devices, and discloses a drying device for artificial leather processing and manufacturing, which comprises a drying box, support frames are mounted on two sides of the drying box, a first motor is mounted on the upper surface of the support frame on the left side, a first screw rod is mounted at the rotor output end of the first motor, and a second screw rod is mounted at the rotor output end of the first screw rod. An adjusting block is rotationally connected to the surface of the first lead screw, and a drying frame is mounted on the surface of the adjusting block; the second motors are arranged on the upper portion and the lower portion of the inner wall of the drying box. An additionally-arranged second motor can drive a mounting frame to move along the surface of the drying frame, so that a second fan can be driven to move in the left-right direction of the leather, and a third motor is started to drive the second fan to move in the front-back direction of the leather, so that the second fan can be driven to move to the wet part of the leather; and the areas, with high water content, of the leather are dried in a concentrated mode, and the artificial leather can be evenly dried.

The invention belongs to the technical field of isotope recovery and separation, and discloses a method for recovering high-abundance C13 carbon dioxide from C13 urea based on acidic constant-temperature hydrolysis. According to the method, the hydrolysis rate of the C13 urea is maintained by selecting proper dilute sulfuric acid concentration, sulfate radicals and urea are prevented from forming an adduct by controlling the dilute sulfuric acid concentration, the release efficiency of the 13CO2 is increased, the reaction rate is controlled, and side reaction is avoided. The invention further provides a set of reaction device for recycling 13CO2 through acidic constant-temperature hydrolysis of C13 urea under reduced pressure, the gas-liquid phase contact area and residence time are remarkably increased by arranging the rectifying column, visual water removal and low temperature are realized through the water removal column and the condenser pipe, the problems of external CO2 pollution, high impurity air content and relatively high water content are solved, and the method is suitable for industrial production. And high abundance recovery of the 13CO2 is ensured.

The invention discloses high-water-retention and anti-cracking all-solid waste sludge-based foam light-weight fluid-state soil and a preparation method thereof, and belongs to the technical field of solid waste resource utilization and civil engineering filling materials, the high-water-retention and anti-cracking all-solid waste sludge-based foam light-weight fluid-state soil comprises aggregate, an alkali-activated gelling system, a water-retention and anti-cracking agent and light-weight filler, the aggregate comprises high-water-content sludge, and the alkali-activated gelling system comprises water-retaining and anti-cracking the alkali-activated gelling system comprises fly ash, red mud, steel slag and an alkali activator, the water-retaining anti-cracking agent comprises xanthan gum, the light filler comprises foam, layered pouring is performed during construction, a foam-stabilizing anti-collapse layer is arranged between two layers of fluid-state soil, and a water-retaining anti-cracking layer is sprayed on each layer. According to the invention, the problems of large cement consumption, high carbon emission and easy dry shrinkage and cracking in the traditional foam light fluid soil are effectively solved, and the water-retaining property and the crack resistance of the material are obviously improved; meanwhile, a cement-like gel structure is formed through solid waste synergistic excitation, efficient resource utilization of the waste sludge is achieved, and the engineering cost and the environmental burden are reduced.

This invention discloses a method for regenerating waste fishing net wire and the resulting recycled PA composition. The method includes the following steps: S1: Waste wet fishing net wire is fed into a forced feeder and forcibly transferred to a drainage mechanism with drainage holes for dewatering; S2: After dewatering, the waste fishing net wire is melted in the melting section of a first screw extruder, and the melt undergoes a first filtration to discharge molten fishing net wire; S3: The molten fishing net wire is transferred to a second screw extruder, where chain extender, water absorbent, and antioxidant are side-fed and mixed. The melt undergoes a second filtration and post-treatment to obtain a recycled PA6 composition; the moisture content of the waste wet fishing net wire is above 10 wt%. The method of this application can directly process waste fishing net wire with high water content, greatly reducing costs. Combined with the secondary melt filtration treatment method, it can better reduce the influence of impurities in the fishing net wire. With the cooperation of chain extender, water absorbent, and antioxidant, the performance of PA6 can be better restored, resulting in a recycled PA6 composition with more stable molecular weight and viscosity, better appearance, and lower odor.

This invention discloses a process for refining crude methanol with high water content. The crude methanol with high water content enters a pre-distillation tower, and the bottom products are then fed into a pressurized tower and a medium-pressure tower, respectively. The bottom product of the pressurized tower enters an atmospheric tower, and the bottom product of the medium-pressure tower enters a negative-pressure tower. The top products of the atmospheric tower and the bottom products of the negative-pressure tower enter a recovery tower. The top of the pre-distillation tower heats the reboiler of the negative-pressure tower, the top of the pressurized tower heats the reboiler of the medium-pressure tower, the top of the medium-pressure tower heats the reboiler of the atmospheric tower, and the top of the atmospheric tower heats the reboilers of both the pre-distillation tower and the recovery tower. The top of the recovery tower heats the reboiler of the negative-pressure tower. Simultaneously, the bottom products of the pre-distillation tower, pressurized tower, medium-pressure tower, and recovery tower are used to preheat their respective feeds. This invention employs parallel flow splitting and multi-effect thermal coupling technology, which significantly reduces the energy consumption of high-water-content crude methanol refining without relying on high-power heat pumps. Steam consumption can be reduced to below 0.56 tons / ton of refined methanol, and it has the advantages of low energy consumption, simple control, and wide applicability.

The application provides an inorganic gel coagulation inhibitor and a preparation method and application thereof, and the preparation raw material of the inorganic gel coagulation inhibitor comprises acrylamide, temperature-resistant and salt-resistant monomers, cationic monomers and initiators in specific proportions. The acrylamide, temperature-resistant and salt-resistant monomers and cationic monomers are selected and matched, so that the obtained inorganic gel coagulation inhibitor has high steric hindrance effect and cationic group shielding effect, can inhibit the rapid coagulation of silicate and metal cations to form a precipitate, can effectively delay the gelation time of the inorganic gel, and is further applied to water control in the profile control and flooding of high water content oilfields, is helpful to realize the expansion of the swept volume of injected water, improves the water flooding sweep effect, and has a good application prospect.

A self-preserved mild liquid detergent composition useful for laundry applications is disclosed. The liquid detergent composition contains the following components: glycerin, which is present in the detergent composition at less than 30 wt % based on the total weight of the liquid detergent composition; at least one anionic surfactant; at least one non-ionic surfactant; ethanol in an amount of 0.1-4 wt % based on the total weight of the liquid detergent composition; at least one buffer; and water in an amount effective to provide a water activity (wa) above 0.8 and up to 0.95 (0.8<aw≤0.95), thus enabling it to be self-preserved. Significantly, the liquid detergent composition does not contain a preservative.

The application relates to a kind of precipitation devices for sand layer foundation, comprising well body, the well body sequentially comprises at least one standard section and one water passing section from top to bottom;Standard section includes second standard section steel cylinder and first standard section steel cylinder;Water passing section includes first water passing section steel cylinder, third water passing section steel cylinder and second water passing section steel cylinder arranged concentrically from outside to inside;First water passing section steel cylinder wall is provided with a plurality of water passing holes, first water passing section steel cylinder and third water passing section steel cylinder are filled with water filtering gravel, and water passing pipe is arranged between third water passing section steel cylinder and second water passing section steel cylinder.The above-mentioned precipitation device adopts standard section and water passing section to jointly form well body, forms supporting structure by steel cylinder, and water passing structure (water passing structure is composed of water passing hole, water filtering gravel and water passing pipe) is arranged in water passing section, which can ensure that groundwater can successfully enter the well body, and can also prevent hole collapse in sand layer with high water content.

The invention discloses an underwater anti-scouring curing agent based on all-solid waste salt-alkali synergistic excitation and a preparation method. The curing agent comprises the following raw materials in parts by weight: 75-85 parts of an all-solid waste-based cementing material; 1.5 to 2.5 parts of an anti-dispersing agent; 0.15 to 0.25 part of a water reducing agent; 0.05 to 0.1 part of a defoaming agent; the all-solid-waste-based cementing material is prepared from 40-50 parts of carbide slag, 20-30 parts of blast furnace slag, 20-30 parts of fly ash and 20-30 parts of ardealite. 45-60 parts of blast furnace slag; 9-11 parts of fly ash and 6-12 parts of ardealite. The preparation method comprises the following steps: pretreating ardealite; activating the solid waste-based cementing material; compounding a functional additive; and packaging the product. The method is suitable for seabed or offshore sludge with high water content, can be directly used after being mixed with seawater, is simple and convenient in construction process, can be quickly applied to various hydraulic structures such as offshore wind power foundations and cross-sea bridges, and meets the anti-scouring and repairing requirements.

The invention relates to the technical field of solid waste recycling, in particular to an all-solid-waste fluid curing filler and a preparation method thereof. The all-solid-waste fluid curing filler is prepared from the following components in parts by mass: 800 to 950 parts of fine-grained industrial solid waste, 50 to 200 parts of a composite curing agent, 50 to 200 parts of an expansion degree regulating component, 5 to 50 parts of an anti-shrinkage component, 2 to 10 parts of a saturated water component and 250 to 450 parts of water. The fine-fraction industrial solid waste is at least one of gold tailings, industrial byproduct gypsum, superfine iron tailings, graphite tailings, river-lake phase sludge, recycled powder, fine-fraction steel slag powder, red mud and muck; the particle size of the fine-fraction industrial solid waste is smaller than 5 mm. According to the invention, high mixing amount and full solid waste fluidization utilization of fine-fraction industrial solid waste are realized, the technical problems of low comprehensive utilization rate, large performance fluctuation and difficulty in treatment of high water content are effectively solved, and the method has remarkable economic and social benefits.

The title of the present application is lead paste formula and preparation method for improving utilization rate of active material of lead-acid battery. It belongs to the technical field of lead-acid battery. It mainly solves the problem that the low-temperature performance and discharge performance of the battery will decrease when the utilization rate of negative active material is improved. Its main features are: the formula of the negative lead paste is as follows in terms of weight fraction: lead powder 100 parts, 1.15g / ml-1.20g / ml dilute sulfuric acid solution 45-60 parts, short fiber 0.12-0.2 parts, lignin 0.5-0.8 parts, carbon black 0.3-0.5 parts, carbon nanotube 0.3-0.5 parts, and barium sulfate 0.8-1 part. The negative lead paste has the characteristics of high water content, high porosity, improved conductive network of the negative lead paste, and the ability to improve the utilization rate of negative active material while ensuring the good low-temperature performance of the starting lead-acid battery, and is mainly used for improving the utilization rate of negative active material of the starting lead-acid battery.

The pipe column comprises an oil pipe and a sleeve arranged on the outer side of the oil pipe in a sleeving mode, the lower end of the oil pipe is connected with a check valve, the bottom of the check valve is connected with a tail pipe, and the check valve and the tail pipe are both located on the inner side of the sleeve; a packer is arranged at the annulus position of the oil pipe and the casing pipe in a setting mode, and a jet pump working barrel is arranged on the upper portion of the packer and connected with the oil pipe. The method comprises the following steps: firstly, assembling to form an integrated drainage and gas production pipe column; then the integrated water drainage and gas production pipe column is tripped into a well, and when the formation liquid production capacity is high, a jet pump core is tripped into an oil pipe to conduct water drainage and gas production operation of the jet pump; and when the formation liquid production capacity is low, the jet pump core is backwashed out, the jet pump isolation sleeve and the plunger device are sequentially put into the oil pipe, and plunger gas lift drainage gas recovery operation is carried out. The method solves the problems that in the prior art, a single drainage process measure is high in cost, and the full-life-cycle continuous drainage production of the medium-high water content gas reservoir gas well cannot be met.

The application discloses a kind of high-wrapping solidified silt and preparation method thereof, it is related to soil solidification technical field.The application utilizes solidified agent to solidify silt, can realize the efficient solidification effect of silt, obtain the silt solidification product with excellent mechanical property.The solidified agent of the application includes solid waste cementitious component and organic reinforcing component, wherein, solid waste cementitious component includes carbide slag, gypsum and mineral powder with mass ratio of 13-17:13-17:66-74, organic reinforcing component includes xanthan gum and casein with mass ratio of 1:0.8-1.2, and the mass ratio of solid waste cementitious component and organic reinforcing component is 7:2.5-3.5.The application solves the problems of high water content, low strength and poor stability of dredged silt through the organic synergistic effect of the composite cementing system of carbide slag, gypsum and mineral powder and xanthan gum, casein, realizes the efficient solidification and resource utilization of dredged silt, and promotes the development of low-carbon engineering materials.

The utility model relates to the field of production equipment, in particular to a polyacrylamide granulating device, which comprises an outer cover, a granulating mold, a pressing column, a scraper blade, a motor and a water collecting table, the granulating mold is fixedly connected in the outer cover, the pressing column is connected in the granulating mold in a sliding manner so as to press materials in the granulating mold out of the granulating mold, and the scraper blade is rotatably connected outside the granulating mold so as to shear the extruded materials into granules. The motor is erected at the outer bottom of the outer cover, the motor is connected with the scraping plate to drive the scraping plate to rotate around the outside of the granulating mold, the water collecting rack is erected at the outer bottom of the granulating mold to collect water flowing out of extruded materials, and the granulating machine has the advantages that the water content of the materials can be reduced while the materials with high water content are granulated.

This utility model relates to the technical field of water conservancy construction equipment, and discloses a dredging device for water conservancy construction, including a sludge treatment pipe. A cover plate is sealed at the tail end of the sludge treatment pipe, and a sewage guide pipe is connected to the front end of the sludge treatment pipe. A rotating shaft is rotatably installed inside the cover plate, with its front end extending into the sewage guide pipe and a feeding auger installed on its outer side. Multiple sets of cutting blades are installed on the outer side of the portion of the rotating shaft located inside the sludge treatment pipe. A water pump is connected to the upper side wall of the sludge treatment pipe, and a water guide pipe is installed at the water inlet end of the water pump. A sewage discharge pipe is connected to the rear part of one side wall of the sludge treatment pipe, and a sludge extractor is installed at the other end of the sewage discharge pipe. The advantages of this utility model compared with the prior art are: the feeding auger collects the sludge into the sludge treatment pipe; the water pump and the water guide pipe draw water from the upper part of the river into the sludge treatment pipe; the multiple sets of cutting blades cut and break up the sludge, and mix it evenly with the water, resulting in a higher water content in the sludge and preventing sludge blockage inside the sewage discharge pipe.

The present application relates to a kind of high ductility silicon hydrogel, which is prepared by polymerization reaction of polymerizable composition containing thiol with functionality greater than or equal to 3, and the elongation of the high ductility silicon hydrogel is 285%-439%.The present application also relates to a kind of high ductility contact lens and its preparation method.By adding thiol with functionality greater than or equal to 3 as crosslinking agent in the formula of silicon hydrogel, the formed silicon hydrogel polymer network is more regular, more full and more stretchy, so that the prepared contact lens has good ductility, and the contact lens has high water content and low modulus.In addition, compared with the contact lens formed without adding thiol with functionality greater than or equal to 3, the size change of the contact lens formed after adding thiol with functionality greater than or equal to 3 is less than 5%.

According to the PHC pipe pile core pulling-out equipment and method suitable for the high-water-content sand layer, a driving assembly of a core pulling-out executing mechanism drives a water spraying piece and a sand stirring tool bit spirally arranged outside the water spraying piece to rotate around the vertical direction, and the spiral tool bit can gather sand-containing sewage and loose sand bodies in a pile core during operation; the sand collecting sleeve sleeving the water spraying piece and located above the sand stirring tool bit communicates with the operation area, gathered materials can be collected in time, and the problem that when existing equipment works, sand flows back to block a pile core is solved; meanwhile, the water content measuring unit detects the real-time water content of the pile core sand layer, the control device compares the real-time water content with a preset water content threshold value and then regulates and controls the assembly, and when the real-time water content is lower than the preset water content threshold value, the flushing assembly is controlled to supply water to the water spraying piece; the problem that existing equipment is difficult to adapt to low-high water content sand layers is solved. And when the water content is not lower than the preset water content threshold value, sewage is pumped only through the suction assembly, and the pile core collapse risk during high-water-content sand layer operation is avoided.

This invention belongs to the field of solid waste treatment and resource utilization technology, and discloses a surfactant elution and biochar synergistic electro-osmotic dewatering process for oily sludge and its application. Addressing the problems of high water content (>96%), strong insulation due to oil film coating, and difficulties in conventional dewatering of oily sludge, this invention adopts a coupled route of "liquid phase modification - mechanical pre-dewatering - electro-osmotic deep drying". First, surfactants are used to remove the oil film on the surface of sludge particles; then, biochar is added to construct a rigid conductive framework, and the water content is reduced to 80%~85% to form a sludge cake through flocculation and mechanical pressure filtration; finally, deep dewatering is carried out under the synergistic effect of electric field and mechanical pressure. This invention uses biochar to solve the problems of high resistance and high energy consumption of oily sludge, while combining Joule heating effect to assist in viscosity reduction. The water content of the treated sludge can be reduced to below 60%, and some oil is recovered during dewatering. It features high treatment efficiency, low energy consumption, long electrode life, and high resource utilization.

The present application relates to a kind of sodium water removal and upgrading device and method for high-sodium low-rank coal, belong to coal sorting processing technical field, solve the problem of processing and utilization of high-sodium low-rank coal in prior art due to its high sodium, high water content.The present application includes steam washing water unit and sodium removal and dehydration unit, the steam washing water unit includes first gas pipeline, second gas pipeline and washing water delivery pipeline, the sodium removal and dehydration unit includes upper sodium removal bin and lower dehydration bin, the first gas pipeline and the washing water delivery pipeline are all communicated with the upper sodium removal bin, and the second gas pipeline is communicated with lower dehydration bin.The present application uses hydrothermal steam flash explosion to remove sodium and water, which can efficiently reduce the alkali content and water content of high-sodium raw coal in a short time, improve the quality and utilization rate of high-sodium coal, greatly reduce the content of volatile alkali sodium in the combustion process of high-sodium coal and improve the calorific value of coal, so that high-sodium raw coal can be more widely used.