4050 results about "Environmentally friendly" patented technology

The invention relates to the field of atmospheric control and pollution abatement, in particular to high-concentration environment-friendly flue gas desulfurization and dust removal equipment. Comprising a tower shell, the tower shell is provided with an air inlet, the upper side of the tower shell is fixedly connected with a ventilation cylinder through a support, the upper side of the ventilation cylinder is fixedly connected with a top disc, the top disc is provided with an exhaust port, and the lower side of the top disc is provided with liquid spraying pipes distributed in the circumferential direction. The ventilation cylinder and the tower shell form an air inlet cavity communicated with the air inlet, the lower side of the tower shell is provided with a liquid outlet used for discharging liquid in the tower shell, the lower part of the inner wall of the ventilation cylinder is provided with a first filter screen used for removing dust, and the diameter of the ventilation cylinder is gradually reduced from the middle to the bottom. According to the invention, the ventilation cylinder is set to be wide at the top and narrow at the bottom, and is matched with the spiral distribution of the gas guide holes, so that flue gas is uniformly distributed in the ventilation cylinder, the contact area between the flue gas and lime slurry is increased, and the desulfurization efficiency of high-concentration flue gas is improved.

The invention provides a deep-sea rare earth deposit mine collecting car and an operation method thereof. According to the method, a double-S-shaped reciprocating collection path is planned through an intelligent controller on the basis of a mining vehicle carrying a multi-stage collection device and aiming at the characteristic that deep sea rare earth is enriched in a sheet and multi-layer mode. According to the difference between the depth and compactness of the sediments, three stages of cutter suction units are adopted for layered collection: the first stage is used for 0-2m surface soft sediments, and the rotating speed of a reamer is 200-400r / min; the second stage is used for 2-4m middle-layer compact sediments, and the rotating speed is 350-600r / min; the third stage is used for 4-10m deep high-strength sediment, and the rotating speed is 500-700r / min. The terrain, posture and pressure are monitored in real time during operation, the posture, speed and obstacle avoidance of the vehicle body are automatically adjusted, and stable collection is achieved. The method has the advantages of accurate layering, comprehensive coverage, small environmental disturbance and high reliability, and is suitable for efficient, safe and environment-friendly collection of deep sea rare earth deposits.

The invention discloses preparation and application of an environment-friendly P, N and Si synergistic flame retardant. According to the flame retardant (KDOPO-LDH (at) GO), a plurality of flame-retardant elements such as P, N and Si are integrated, so that an efficient synergistic flame-retardant system is constructed. Wherein the existence of the N element and the Si element effectively promotes the uniform dispersion of the flame retardant in an epoxy resin matrix; meanwhile, the unique molecular structure of the P-containing component endows the carbon-forming agent with excellent carbon-forming performance under a high-temperature condition. Through the synergistic effect of multiple elements, the flame retardant property of the epoxy resin is remarkably improved, and meanwhile, the good mechanical property of the material is effectively maintained. In addition, halogen-free and low-toxicity substances are mainly generated in the pyrolysis process of the flame retardant, and the green chemical concept is met.

The invention discloses an open pit mine stripping semi-continuous laying method based on a backfill type deeply-buried channel, and belongs to the technical field of transportation of open pit coal mine stripping systems. The method specifically comprises the steps that an optimal stripping semi-continuous belt conveyor system layout route starting from a stripping crushing station to an outer dumping site is planned; a space gully between the inner dumping site and the outer dumping site of the optimal route is filled with stripping materials to form a dumping bridge, a stripping semi-continuous belt conveyor is laid on the dumping bridge to the outer dumping site, and a backfill type deeply-buried channel is laid below the dumping bridge in advance. According to the transportation mode, the stripping and coal mining operation route is optimized, the truck transportation distance is shortened, and the comprehensive cost is reduced by 50%. Meanwhile, the dumping space is enlarged, and the tension of the dumping space is relieved. According to the arrangement mode, stripping and coal mining transportation routes are optimized, existing coal transportation and power transmission lines are reserved, and rerouting is avoided; tail gas emission is reduced, and environmental protection and energy conservation are achieved; hidden safety accidents in truck transportation are reduced, and manpower is released; and the strip mine is promoted to develop towards a safe, green, intelligent and efficient direction.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The invention discloses a preparation method of fresh taxus chinensis stem and leaf protoplasts. The preparation method comprises a preparation process and a purification process. The preparation method of the taxus chinensis stem and leaf protoplast is simple and easy to operate, raw materials are easy to obtain and low in price, reagent components have good biocompatibility, and the taxus chinensis stem and leaf protoplast is free of harmful components, safe and environmentally friendly. The invention provides a simple and rapid taxus chinensis stem and leaf protoplast enzymolysis preparation method, which adopts vacuum filtration, accelerates the permeation of enzymatic hydrolysate and improves the enzymolysis efficiency, so that the protoplast can be rapidly obtained. Meanwhile, high-purity separation of the protoplast is carried out in combination with density gradient sedimentation of the iodixanol solution, so that the protoplast with uniform size and complete form is obtained, and convenience is provided for scientific researches such as subsequent conversion and single cell transcriptome sequencing.

The invention discloses a high-valued utilization method of waste biomass, which comprises the following steps: firstly, applying current to the waste biomass containing carbon element to generate Joule heat, and generating a high-temperature environment in an extremely short time, so as to realize rapid carbonization of the biomass; then conductive carbon black or other auxiliaries do not need to be additionally added, current is applied again to generate Joule heat, a higher-temperature environment is generated within an extremely short time, and graphitization transformation of the biochar is achieved. Compared with traditional pyrolysis, hydrothermal, roasting or chemical vapor deposition methods, the flash Joule thermal method has the advantages of being easy and convenient to operate, short in consumed time, low in energy consumption, high in efficiency, high in safety, environmentally friendly and the like, and is suitable for high-value utilization of various biomass resources and green preparation of graphene materials.

The invention provides a sealing system and method based on a ring-type coal feeder, and relates to the technical field of sealing based on coal feeders, and the sealing system comprises a ring-type sealing body module, an air pressure compensation module, a dust recovery module and an intelligent control module. Dynamic sealing is achieved through elastic deformation of the annular sealing body module, and track gap changes are adapted; the air pressure compensation module provides adjustable air pressure to enhance sealing adhesion force; the dust recovery module effectively collects escaping pulverized coal through negative pressure, and waste and pollution are reduced; the intelligent control module monitors and adjusts parameters in real time, stable operation of the system is guaranteed, the metal hard pipe connection improves the stability of a gas path, the preset overlapping distance between the collecting cover and the sealing body enhances the recycling sealing performance, the sensor arrangement ensures accurate parameter monitoring, and efficient, stable and environment-friendly sealing of the ring type coal feeder is integrally achieved.

The invention provides a biochar repairing agent for marine sediments and a preparation method of the biochar repairing agent, and belongs to the technical field of repairing agents. The preparation method comprises the following steps: carbonizing straws, modifying by phosphoric acid and concentrated nitric acid, depositing ferroferric oxide-titanium dioxide, loading UiO-66-(COOH) 2 on the surface, coupling cyclodextrin-MOF and chitosan, crosslinking, performing magnet separation, washing and drying to obtain the biochar repairing agent for the marine sediments. The biochar repairing agent for the marine sediments prepared by the invention has a relatively large specific surface area and a plurality of coordination groups, can better fix heavy metal ions in the marine sediments, also has a photocatalytic degradation effect on organic pollutants, and is good in mechanical strength, easy to store and transport, safe, environment-friendly and easy to separate; wide application prospects are realized.

This invention relates to the field of novel low-carbon composite cement and solid waste resource utilization technology, specifically to a red mud-based low-carbon composite cement and its preparation method. The raw materials for this red mud-based low-carbon composite cement include red mud, auxiliary cementitious materials, gypsum-based solid waste, alkali activator, retarder, and interface reinforcing agent. It possesses compressive strength comparable to or even higher than 425 or 525 cement, with a red mud content ≥30wt% and an alkali activator content as low as 3wt%–8wt%. This not only achieves large-scale resource utilization of red mud but also significantly reduces production costs. Simultaneously, the cement hydration products have a good shielding effect against radioactivity, ensuring that the radioactivity of the hardened cement still meets national standards even with the large-scale incorporation of red mud. Moreover, the preparation method of this cement is simple, requiring neither red mud dealkalization nor high-temperature calcination, truly achieving low-carbon, low-energy-consumption, and low-cost green and environmentally friendly cement production.

The utility model relates to an efficient and environment-friendly machine-made fine sand production system which comprises a bar type feeder, a screen feed opening of the bar type feeder is connected to a linear vibrating screen I, and a screen feed opening of the bar type feeder is connected to a jaw crusher; a feed opening of the jaw crusher and an oversize feed opening of the linear vibrating screen I are connected to the intermediate crushing cone crusher, and a feed opening of the intermediate crushing cone crusher is connected to the linear vibrating screen II; screen discharge ports of the linear vibrating screen I and the linear vibrating screen II are connected to a trough type sand washer, a clean sand outlet of the trough type sand washer is connected to a rod mill, and a discharge port of the rod mill is connected to a high-frequency dewatering screen. A slurry outlet of the groove type sand washer and a slurry opening of the high-frequency dewatering screen are sequentially connected to a high-efficiency thickener and a plate-and-frame filter press. The dry-wet combined sand making process system is high in sand forming rate, quality indexes such as mud content, water content, grading and stone powder content of finished product sand can be well controlled in the sand making process, and the quality of finished product machine-made fine sand is improved.

This invention discloses a method for preparing high-purity zirconium oxide, belonging to the field of compound preparation technology. The method provides a breakthrough adjustment of the final concentration state and the cooling process after concentration and evaporation of an acidic zirconium oxychloride solution under the action of an oxidant. Simultaneously, crystallization is achieved through a two-stage concentration and evaporation process, followed by calcination to obtain hafnium-free zirconium oxide. The resulting zirconium oxide not only has a high yield but also high purity. Furthermore, the technical solution of this invention avoids the generation of ammonia nitrogen wastewater as in existing technologies, thus not only avoiding environmental impact but also significantly reducing production costs through the recycling of hydrochloric acid condensation, achieving a green and environmentally friendly effect.

This invention relates to the field of special agents for treating air pollution, specifically to a rare earth water-based environmentally friendly urea crystal remover for vehicles and its preparation method. The raw materials for preparing the rare earth water-based environmentally friendly urea crystal remover for vehicles, by weight, include: 0.005-0.2 parts rare earth-based catalyst, 3-10 parts surfactant, 1-3 parts dispersant, 5-10 parts stabilizer, and 80-100 parts deionized water; wherein the rare earth-based catalyst includes at least a cerium-based catalyst. The urea crystal remover provided by this invention has excellent performance, effectively removing urea crystals, and the cerium emission concentration is far below the requirements of the EURO 7 draft (EURO 7 does not require cerium). NOx conversion rate is significantly improved, making it more suitable for vehicles using high-sulfur fuels, and greatly benefiting the control of air pollution from mobile sources. It is also environmentally safe and environmentally friendly.

The invention belongs to the technical field of sewage treatment, and discloses environment-friendly sewage treatment equipment for building material production, the equipment comprises a filter box: a filter plate movably embedded in the inner wall of the filter box, and connecting rods are fixedly arranged on one side, close to four corners, of the filter plate. A plurality of rubber sleeves are in contact with the bottom of the pressure bearing plate during rotation, the plurality of rubber sleeves jack up the filter plate upwards, when the plurality of rubber sleeves are not in contact with one side of the pressure bearing plate, the filter plate moves downwards to be located on one side of a baffle, and a plurality of elastic plates have elasticity, so that the vertical vibration effect of the filter plate is further improved; furthermore, the grating plate moves along with the filter plate through a plurality of connecting rods, and impurities filtered on the upper sides of the filter plate and the grating plate vibrate along with the filter plate and the grating plate in the back-and-forth up-and-down moving process, so that the impurities are prevented from blocking the filter holes, the filter holes can be prevented from being blocked during sewage treatment, and the sewage treatment efficiency is improved.

The invention belongs to the technical field of PVC coated cloth, and particularly relates to environment-friendly welding-resistant low-cost coated cloth meeting the BS7837 standard. The coated fabric is a PVC coated fabric, and a PVC coated fabric coating taking WSFR-9702, antimony trioxide and decabromodiphenyl ethane as flame retardants is obtained through a large number of screening, so that the coated fabric simultaneously meets the comprehensive performance requirements of meeting the high flame retardance requirement of the BS7837 standard, meeting the high environmental protection requirement of the REACH regulation, being resistant to welding, low in cost, free of precipitation, folding white and the like; therefore, the method has the advantages of environmental protection, cost reduction and quality improvement, the comprehensive competitive advantage of the product is improved, and the method has great industrial application value.

The invention provides a composite material solar interface evaporation device and a preparation method and application thereof. The solar interface evaporation device comprises a photo-thermal layer and a supporting layer, and a plurality of fluid transportation channels are formed in the supporting layer. The photo-thermal layer combines the carbon nano tube and the silver particles to generate an efficient photo-thermal conversion film, so that the photo-thermal conversion efficiency is improved; pVA is adopted as a curing film-forming agent, a PVA aqueous solution is firstly sprayed on the surface of the supporting layer through a laminated spraying method, then the photo-thermal layer is sprayed on the surface of the PVA film layer, and the photo-thermal layer is prevented from being stripped from the supporting layer; the supporting layer is of a hollow conical supporting structure prepared from PA12 through the selective laser sintering (SLS) 3D printing technology, and a capillary triangular tooth-shaped groove is designed to serve as a fluid conveying channel. The evaporation device achieves efficient photo-thermal energy utilization, high seawater evaporation rate and biological pollution resistance, has the advantages of being low in preparation cost, long in service life, environmentally friendly and the like, and has wide application prospects in the fields of seawater desalination and sewage treatment.

The utility model relates to an underwater acting system which comprises an acting module located underwater and a working platform for controlling the acting module, and the acting module comprises a guide mechanism extending underwater by a certain distance and penetrating through an umbrella top of an acting umbrella; the acting umbrellas are arranged at intervals along the guide mechanism and are connected to an acting rope through the peripheries of the umbrellas; one end of the acting rope is connected to acting or power generation equipment arranged on the working platform, so that the acting rope is pulled by the acting umbrella through the water flow power to act or generate power; the control rope is connected with the top of the acting umbrella, one end of the control rope is connected with the working platform, and the working platform controls recovery and release of the control rope; and the limiting mechanism is used for limiting the acting rope and the control rope so that the acting rope and the control rope are not separated from the guide mechanism during reciprocating motion. The acting system is directly arranged underwater, water flow kinetic energy is used for acting or generating electricity, environment friendliness is achieved, acting and generating can be achieved through the natural terrain of a water body, environmental limitation is small, and the utilization rate of the water flow kinetic energy is high.

The utility model belongs to the technical field of coke oven gas purification, and particularly relates to an environment-friendly and efficient oxidation process desulfurization regeneration tail gas treatment system, which is characterized in that the system is a multi-stage step-by-step washing system and comprises an alkaline washing tower, an acid washing tower and a water washing tower, primary washing tail gas at the top of the alkaline washing tower is connected with the bottom of the pickling tower through a pipeline, secondary washing tail gas at the top of the pickling tower is connected with the bottom of the water washing tower through a pipeline, a bleeder is arranged at the top of the water washing tower, the bottom of the bleeder is isolated from the interior of the water washing tower through a partition plate, and an overpressure return pipe is arranged between an outlet of the tail gas fan and the bleeder and provided with a switch valve. And a pressure gauge is arranged on an outlet pipeline of the tail gas fan and is in interlocking control with the switching valve. The device has the beneficial effects that the current environmental protection standard can be met, ammonia in tail gas can be recycled, no sewage is discharged, and the device has the characteristics of environmental protection, high efficiency, stable and reliable process and easiness in implementation and popularization.

The invention belongs to the related field of ultra-precision polishing technology, and discloses an ultrasound-piezoelectricity-photocatalysis assisted chemical mechanical polishing method which comprises the following steps: mixing a basic polishing abrasive, a piezoelectric material and a photocatalyst, calcining and grinding, and processing to obtain a modified abrasive; preparing a polishing solution containing a piezoelectric catalysis carrier and a photocatalysis carrier at the same time; the polishing process is completed through a chain of mechanical stress, a piezoelectric electric field, efficient carrier separation and more active species participating in reaction. The invention further discloses a matched polishing device. Compared with the prior art, the method has the advantages that the material removal rate can be effectively increased, the polishing time can be effectively shortened, the surface quality can be further improved, the subsurface damage can be reduced, in addition, a more environment-friendly polishing solution can be used, the waste liquid treatment cost is reduced, the environment is protected, and the method is suitable for industrial production. Therefore, the polishing device is especially suitable for various high-hardness materials to realize the polishing application occasions of low-damage and ultra-smooth surfaces of the high-hardness materials.

This invention belongs to the field of vacuum cleaners, specifically relating to an environmentally friendly pulse jet vacuum cleaner. It solves the problems of existing pulse jet vacuum cleaners not being able to automatically close the dust discharge port and not being able to conveniently and reliably replace filter bags or cartridges in batches after prolonged use. The invention includes a base plate, a second housing, and filter cartridges. A pulse jet assembly is installed in the first housing, a self-positioning installation assembly is installed in the second housing, and a high-efficiency dust removal assembly is installed in the second housing. When the first and second housings are engaged and fixed, the invention utilizes a hydraulic rod and the high-efficiency dust removal assembly to conveniently transfer and process the collected dust and impurities, completing the dust removal process. When the first and second housings are separated, the self-positioning installation assembly allows for batch disassembly, assembly, and replacement of filter cartridges, improving the practicality and convenience of the pulse jet vacuum cleaner.

The utility model discloses a center top-open type container sealing cover which comprises a cover body and a top-open structure arranged on the cover body, and the cover body is a shell with an opening in the bottom. A counter bore is formed in the top face of the shell, the ejection structure is located in the counter bore, and the ejection structure comprises an ejection piece located on the back face of the counter bore, a center circular plate located in the middle of the ejection piece and a reinforcing rib connecting the cover body and the ejection structure. A sealing piece is arranged in a gap formed between the counter bore and the cover body, the sealing piece is connected with the inner wall of the top of the cover body, the cover body is integrally formed, production is convenient, and the production cost is reduced. The ejection structure is composed of an ejection sheet and a central circular plate, so that the force required during pressing can be reduced, and unsealing is more convenient; the reinforcing rib is connected with the cover body and the ejection structure, the center circular plate and the ejection piece are pulled after the cover is opened, the center circular plate and the ejection piece are prevented from falling into a container to pollute liquid, and the cover has the advantages of being clean, environmentally friendly and convenient to use.

The invention belongs to the technical field of oil and gas exploitation, and relates to a nanometer desorbing agent for a gas well and a preparation method thereof.The desorbing agent is prepared by using biochar subjected to special pretreatment as a core carrier, loading bimetallic oxide nanoparticles in a specific proportion and carrying out surface modification with an environment-friendly surface active agent. Through the synergistic effect of the nanometer size effect, the catalysis / electron transfer effect of the metal oxide, the physical adsorption and pore transport effect of the biochar and the interfacial tension reduction effect of the surfactant, the adsorption energy barrier of gas molecules such as methane on the rock surface is remarkably reduced, and efficient desorption of the gas molecules is promoted. Meanwhile, all the components and the preparation process are environment-friendly and harmless to a human body.

A paper bottle system for pharmaceuticals is disclosed. The system includes a first frustum-shaped conical section formed of heavy-weight paper, a second frustum-shaped conical section formed of a biodegradable material, a biodegradable lid, and an aqueous coating. The conical sections are angled between 5-8 degrees from vertical, allowing for efficient nesting and stacking. The system is designed to be environmentally friendly, easily recyclable, and optimized for short-term use. When disposed of in a landfill, the paper bottle system quickly breaks down, contributing to soil health and reducing environmental impact.

The invention relates to the technical field of road engineering, in particular to an all-solid waste rubber-based composite modified foam cold recycled asphalt mixture and a preparation method thereof, and the all-solid waste rubber-based composite modified foam cold recycled asphalt mixture comprises the following components in parts by mass: 150-200 parts of graded precisely-controlled recycled aggregate, 10-25 parts of recycled mineral activity enhancing powder, 5-10 parts of an industrial solid waste reinforcing agent and 20-40 parts of solid waste-based recycled foam asphalt. The mixture utilizes various solid wastes for recycling, has excellent pavement performance, high strength, crack resistance and durability, can be constructed at normal temperature or low temperature, and is low in energy consumption and environment-friendly. Through composite modification of foamed asphalt and rubber powder, early strength and stability are significantly improved, the problem of slow development of early strength of a cold recycled material is overcome, the construction period is shortened, and traffic is quickly opened. The method is simple in process, low in cost and convenient to construct, meets the requirements of green and low-carbon construction, provides a new way for the double-carbon target in the traffic field, and is remarkable in economic and social benefits and wide in application prospect.

The invention provides a method for preparing a compound amino acid chelated slow-release fertilizer from waste spirulina mud, and belongs to the technical field of agricultural fertilizers. According to the method disclosed by the invention, the waste spirulina mud from which phycocyanin and polysaccharide are extracted is fully utilized, the waste spirulina mud is decomposed into free amino acid, and the free amino acid is compounded with marine polysaccharide to prepare a green compound amino acid chelated fertilizer product with a slow-release effect; secondly, the nutrient release period of the fertilizer can be regulated and controlled by controlling the proportion and concentration of the marine polysaccharide, and the fertilizer has excellent water and fertilizer retention capacity.

The invention discloses an electronic waste efficient chlorination comprehensive recovery device and method, and relates to the technical field of chemical metallurgy, the electronic waste efficient chlorination comprehensive recovery device comprises a chlorination reaction cavity, a heating system, a vacuum system, an atmosphere control system and a condensation separation system; the heating system is used for controlling the temperature of the chlorination reaction cavity; the vacuum system is communicated with the heating system; the atmosphere control system comprises a chlorine gas source and a protective gas source; and the temperature of the condensation separation system is gradually reduced. Through the high-purity graphite heating assembly, the sealing structure and the atmosphere control system, the highest heating temperature is 1700 DEG C, the temperature limit of 1200 DEG C of a traditional quartz tube furnace can be broken through, the chlorine corrosion problem is solved, chlorine is not leaked, and the environment is not polluted. High-valued recovery of different metal resources can be achieved through low-temperature pyrolysis, high-temperature chlorination volatilization and three-stage condensation settling separation, and the method has the advantages of being low in energy consumption, high in recovery rate, environmentally friendly and the like and is suitable for industrial metal resource recovery.

The utility model relates to a pomacea canaliculata trapper which comprises a trapping mechanism, a liquid medicine barrel is arranged below the trapping mechanism, a photovoltaic panel is installed on the top of the trapping mechanism, the trapping mechanism comprises a bottom plate and a lower frame, a plurality of vertical rods are connected between the bottom plate and the lower frame, and an action control circuit and a photovoltaic power source controller are installed on the surface of the bottom plate. A gear transmission mechanism is installed below the bottom plate and comprises a plurality of gears, an output shaft of each gear is rotationally connected with a rotating blade, the rotating blades are located above the lower frame, a screw is further arranged between the bottom plate and the lower frame and connected with a spiral sweeping disc, one end of the spiral sweeping disc is in sliding connection with the vertical rod, and the other end of the spiral sweeping disc is in sliding connection with the vertical rod. And the screw rod and the sweeping disc are positioned in an area enclosed by the plurality of rotating blades. According to the habit that the ampullaria gigas climbs to the side wall of a hard object on the water surface or the surface of an emergent aquatic plant to lay eggs before nighttime to dawn, mechanical equipment is combined, female ampullaria gigas before egg laying is efficiently caught and killed through a physical means, the population number of the ampullaria gigas is greatly controlled, and the device is environmentally friendly and low in input manpower and cost.

An environmentally friendly fresh-keeping can and a method of manufacturing the same are provided. The environmentally friendly fresh-keeping can includes a housing, an inner container, an easy-open lid, and a bottom cover. The housing, the inner container, the easy-open lid, and the bottom cover are respectively made of a spiral paper tube, bio-based polyethylene 2,5-furanoate (PEF), aluminum, and biodegradable plastic. The inner container is mounted into the housing through an inner opening on a top of the inner container. Then the easy-open lid and the bottom cover are respectively used to seal the inner opening of the inner container and a bottom opening of the housing. The respective components are made of biodegradable, recyclable and reusable materials and able to be disassembled for recycling and reuse. Thereby the can meets requirements for environmental protection and recycling.

There is provided a pad material, a seating seat, and a conveyance seat that improve seating comfort while being environmentally friendly, and that do not cause discomfort to a seated occupant. A pad material is used in a seating seat, and supports a seated occupant. The pad material includes a base portion that supports the seated occupant; a side portion disposed outside the base portion in a seat width direction; and a projecting portion that projects from the side portion toward a seated occupant side, and that supports the seated occupant from sides. In the pad material, an entirety of the projecting portion is formed from biomass urethane, and at least a part of the base portion is formed from a material softer than the biomass urethane.

This invention relates to a carbonized loofah photothermal evaporator with a wall-like structure and its preparation method, relating to the field of solar-driven interfacial water evaporation. The invention utilizes freeze-drying technology to dry fresh loofah, obtaining a freeze-dried loofah that retains its porous structure; then, it carbonizes the freeze-dried loofah in a tubular furnace under an inert gas environment. The carbonized loofah retains the anisotropic structure of the inner and outer layers of the fresh loofah. The outer layer, with its dense structure resembling a wall, maintains its shape and provides structural protection. The inner layer, with its loose and porous structure, acts as a channel for directional water transport, facilitating efficient water evaporation. The resulting integrated carbonized loofah photothermal evaporator exhibits excellent water transport rate and good photothermal conversion capability, making it applicable to interfacial water evaporation. This evaporator uses readily available raw materials, has a simple manufacturing process, high photothermal evaporation efficiency, and is environmentally friendly, showing promising applications in seawater desalination.