13828 results about "Environmental engineering" patented technology

A direct air capture (DAC) of CO2 system includes a reaction reactor having a solid, amine-functionalized sorbent configured to sequester CO2 from air; an in-situ dual-function device configured as a CO2 conversion reactor and an exchange fluid regeneration device; and the exchange fluid, recirculating between the reaction reactor and the dual-function device, configured to capture the sequestered CO2 from the solid sorbent in the reaction reactor and release the captured CO2 in the conversion reactor, the exchange fluid including one or more amino acids.

An atmospheric CO2 capture system includes a compartment housing a solid CO2 sorbent, an exchange fluid including a chemical component with selectivity towards CO2, and an electrochemical cell or mineralization reactor in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO2 from incoming air onto the solid CO2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO2 from the saturated sorbent and bind the detached CO2 to the chemical component; and a third state of regenerating the chemical component and utilizing the CO2 in the electrochemical cell or mineralization reactor.

An atmospheric CO2 capture system includes a compartment housing a solid CO2 sorbent, an exchange fluid including a chemical component with selectivity towards CO2, and an electrochemical cell or mineralization reactor in fluid communication with the compartment, the system having a cycle including a first state of sorbing CO2 from incoming air onto the solid CO2 sorbent until a saturation point is reached; a second state of regenerating the sorbent by flooding the compartment with the exchange fluid to detach CO2 from the saturated sorbent and bind the detached CO2 to the chemical component; and a third state of regenerating the chemical component and utilizing the CO2 in the electrochemical cell or mineralization reactor.

A system for capture of atmospheric CO2 includes a reaction reactor having a solid sorbent; and a mineralization reactor downstream from the reaction reactor, the system having three states including in the reaction reactor, a first state of sequestering CO2 from air into the solid sorbent; in the reaction reactor, a second state of releasing the sequestered CO2 from the sorbent by contacting the CO2-enriched sorbent with an exchange fluid having one or more amino acids and forming a CO2-enriched exchange fluid; and in the mineralization reactor, a third state of reacting the sequestered CO2 from the CO2-enriched exchange fluid with an alkaline feedstock to form a carbonate while regenerating the exchange fluid.

A thermochemical reactor for receiving a source of atmospheric carbon dioxide and reducing the atmospheric carbon dioxide is provided. In one or more embodiments, the thermochemical reactor may be part of an atmospheric carbon capture system that includes a solid sorbent and an exchange fluid that is cycled between the solid sorbent and the thermochemical reactor.

An exchange fluid having one or more amino acid for removing carbon dioxide from a solid sorbent and systems containing the same are disclosed. The exchange fluid may further include a neutralizing base for neutralizing the amino acid. The system may further employ an electrochemical cell to regenerate the exchange fluid by removing carbon dioxide from the exchange fluid without employing degrading temperatures and pressures.

The invention relates to the technical field of waste plastic treatment, in particular to a waste plastic grading carbonization device and a waste plastic treatment method. The waste plastic grading carbonization device comprises a feeding hopper, a crushing device, a grinding device, a screening device, a catalyst self-adaptive proportioning device, a first spiral discharging machine, a first-stage carbonization chamber, a second-stage carbonization chamber, an activation chamber, a second spiral discharging machine, a solid product collecting device, a liquefaction device, a liquefied product collecting device, a cooling water circulating device and a third spiral discharging machine, a material returning bin and a tail gas treatment device. According to the invention, through the collaborative innovation of'grading carbonization 'and'catalyst self-adaptive proportioning device', the problems of incomplete and non-uniform carbonization of the waste plastics, inadequate utilization of gas products and the like in the pyrolysis process of the waste plastics are solved, and an industrial feasible path is provided for chemical recovery of the waste plastics; the device is reasonable in overall structural design and high in treatment energy efficiency, and continuous, sufficient and efficient pyrolysis and high-value conversion of the waste plastics are achieved.

The application discloses a tunnel advanced drilling harmful gas detection device and method, and relates to the technical field of tunnel construction. The tunnel advanced drilling harmful gas detection device comprises a sleeve pipe; a laser monitoring module is arranged on the sleeve pipe; the laser monitoring module is used for emitting laser along the axial direction of the sleeve pipe in the sleeve pipe, and is used for distance measurement and harmful gas concentration monitoring; a shielding module is arranged on the sleeve pipe; the shielding module is used for periodically shielding the laser emitted by the laser monitoring module; a gas flow speed monitoring module is arranged on the sleeve pipe; and the gas flow speed monitoring module is used for monitoring the harmful gas flow speed in the sleeve pipe. The application can accurately detect the harmful gas concentration at the bottom of the advanced drilling hole, and provides an accurate basis for the tunnel harmful gas risk evaluation.

Suppressing methane gas emissions from paddy rice cultivation is extremely important as a measure against global warming. The challenge here is to achieve both improved rice productivity and environmental protection. Specifically, this involves developing a device that can generate large quantities of high-concentration ultrafine bubble (UFB) water in a short time, by adding methane gas emission suppression to the UFB water. [Solution] The UFB generating apparatus of the present invention incorporates a variable-speed rotary stirring device into a UFB generation tank, and this tank is filled with sandy material. By supplying gas and water to this tank at high pressure, the sandy material layer of gas, water, and sandy material is liquefied. By rapidly rotating this liquefied layer with the rotary stirring device, the gas is confined in the pore water of the liquefied layer and then finely fragmented. Furthermore, by using sandy steel slag as the sandy material, in addition to the UFB effect, methane generation due to silica, lime, and iron oxide is suppressed and crop yields are improved.

A process for process for generating power in an ammonia-fueled gas turbine power plant includes flowing an ammonia feed stream to an ammonia cracker reactor in geographical proximity to an ammonia-fueled gas turbine power plant to crack ammonia feed stream under cracking conditions, thereby producing a product effluent comprising ammonia and hydrogen, flowing the product effluent comprising ammonia and hydrogen to an ammonia-fueled gas turbine of an ammonia-fueled gas turbine power plant, and combusting the product effluent comprising ammonia and hydrogen to drive the ammonia-fueled gas turbine. An exhaust gas stream generated from the ammonia-fueled gas turbine is recycled back to supply heat to the ammonia cracker reactor.

Processes and systems for providing a CO2 enriched stream from an air stream, by: selectively adsorbing, in a first separation zone, CO2 and H2O in an air stream and providing a CO2 and H2O depleted gas stream; separating, in a second separation zone, the CO2 and H2O depleted gas stream and providing an N2 enriched stream, an O2 enriched stream, and an N2 enriched regeneration stream; heating the N2 enriched regeneration stream to provide a heated N2 enriched regeneration stream; selectively desorbing, in the first separation zone, the CO2 and H2O using the heated N2 enriched regeneration stream and providing a spent regeneration gas stream; drying the spent regeneration gas stream to remove H2O and providing a dried spent regeneration gas stream; and separating, in a third separation zone, the CO2 from the dried spent regeneration gas stream to provide a CO2 enriched stream.

This application relates to an air handling device and an air purification device. The air handling device includes a first rotating assembly for connecting to a pre-filter assembly, thereby driving the pre-filter assembly to rotate. A cleaning mechanism is located around the pre-filter assembly. When the pre-filter assembly rotates, the cleaning mechanism acts on the surface of the pre-filter assembly to remove contaminants from its surface. The cleaning mechanism includes a scraper and a roller brush assembly, which are arranged adjacent to each other. Contaminants on the surface of the pre-filter assembly are scraped off by the scraper and carried away by the roller brush assembly. This air handling device not only removes contaminants from the surface of the pre-filter assembly but also carries them away, greatly reducing the possibility of secondary pollution caused by contaminants scraped from the surface of the pre-filter assembly and further improving the purification effect.

A hydrocarbon stream is combusted within a reactor to produce soot and syngas. Sub-stoichiometric combustion of the hydrocarbon stream within the reactor converts at least 10% of the carbon in the hydrocarbon stream into soot. The syngas is mixed with a steam stream to produce a hydrogenation feed stream. A shift reactor converts at least a portion of the carbon monoxide and steam to carbon dioxide and hydrogen to produce a shifted gas stream. Water is separated from the shifted gas stream to produce a dehydrated gas stream. The dehydrated gas stream is separated to produce a hydrogen product stream and a recycle stream. The recycle stream is recycled to the reactor.

A direct air capture CO2 system includes a CO2 extraction reactor having a chamber defined by a wall; an air inlet formed in the wall; an air outlet formed in the wall; and housing units defining internal volumes, the housing units arranged within the chamber, at least some of the housing units having spherical and / or ellipsoidal shapes, each of the internal volumes at least partially filled with functionalized CO2 sorbent particles.

This invention discloses a controlled-release solid film formulation for pesticides, its preparation method, and its applications. This invention upgrades pesticides from liquid / powder formulations to solid film formulations, utilizing the solid film to physically block pesticide drift, diffusion, and loss, reducing off-target effects at the source. Through the combined use of physical and chemical techniques, pesticides are uniformly distributed within the solid film, and the pesticide release cycle is synchronized with the solid film degradation, achieving precise controlled release. This solid film formulation is applied from the beginning of crop growth, synchronized with the plant growth cycle, providing early preventative effects through quantitative controlled release of pesticides. This solid film formulation also functions as a mulch film; its preparation process is simple and easy, it is completely degradable and requires no recycling, reducing costs. The identification method of this invention utilizes selective precipitation separation technology, achieving high pesticide extraction efficiency of 95%-98%, especially suitable for low water-soluble pesticides. The drug identification process is simple to operate: the entire process takes less than 4 hours, requires no complex purification steps, and is suitable for batch sample processing.

This invention discloses a method, device, medium, and product for assessing the human-river happiness index, relating to the technical field of human-river relationship evaluation. The method includes: collecting river ecological data and social water-related data of the river to be evaluated; performing standardization processing on the social water-related data according to preset human well-being evaluation rules to obtain a human well-being evaluation value; performing standardization processing on the river ecological data according to preset river-specific well-being evaluation rules to obtain a river-specific well-being evaluation value; inputting the human well-being evaluation value and the river-specific well-being evaluation value into a human-river fusion calculation model for fusion calculation to obtain a human-river happiness index matching the river to be evaluated. This achieves a synergistic consideration of human well-being and river-specific well-being, providing a scientific and quantitative decision-making basis for comprehensive water resource management and river and lake governance assessment, and avoiding evaluation bias where improving human well-being comes at the expense of river ecological health.

This invention belongs to the field of saline-alkali land remediation technology, and specifically discloses a saline-alkali land remediation composite material obtained by a co-hydrothermal method using plant and animal biomass, and its preparation method. This saline-alkali land remediation composite material uses heavy metal-containing biomass as raw material, which can be converted into saline-alkali land remediation particles at low cost and safely. Supplemented with specific components of the co-hydrothermally derived saline-alkali land remediation solution, the rich organic matter and trace elements effectively improve the infertility problem of saline-alkali soil. Furthermore, the low pH of the saline-alkali land remediation solution reduces the pH of the saline-alkali soil, comprehensively achieving the improvement and remediation of saline-alkali soil. This preparation method not only effectively consumes heavy metal-containing biomass but also provides a foundation for the long-term development of saline-alkali land remediation technology. This invention also discloses a saline-alkali land remediation method based on the above-mentioned saline-alkali land remediation composite material. After application, it lowers the soil pH by at least 0.50 units and also increases the content of nutrients such as total nitrogen, hydrolyzable nitrogen, and organic carbon in the soil.

This invention discloses a resource-based treatment system and method for barium sulfide slag. The system involves crushing and leaching the barium sulfide slag using a pretreatment unit, thereby leaching out the barium sulfide. The barium-enriched washing solution is then processed through an electrophoretic deep treatment unit to achieve high-value recovery of sulfur and barium elements, ultimately realizing the resource utilization of the barium slag. The entire process is pollution-free and has the advantages of being environmentally friendly, having high added value, high sulfur utilization efficiency, low cost, and simple operation. It is suitable for large-scale industrial applications and has broad market prospects and significant economic benefits.

The utility model discloses a kind of soil samplers with cleaning mechanism, it is related to soil sampler technical field, including soil sampling shell, the inside cooperation installation of soil sampling shell is soil discharge frame, the inside of soil sampling shell is provided with limit slot;By being provided with auxiliary cleaning mechanism, one end of movable plate drives support column and impacts assembly support outside, help loosening the adhesion between soil sample and pipe wall, save the sampling time in cohesive soil, gravel-containing soil or root system developed soil, reduce the adhesion of soil, it is favorable for the subsequent cleaning to carry out;By being provided with dismounting cleaning mechanism, when assembly support is connected with soil discharge frame, the connection between assembly support and soil discharge frame is conveniently completed, assembly process is simple, and it is easy for user to dismount and maintain, assembly support can be conveniently taken out and cleaned and maintained inside soil discharge frame, realize the purpose of being favorable for cleaning.

Provided herein is a blast and fragment mitigating apparatus (BAFMA), including in a blanket configuration, and related methods useful for containing a hazardous device or cargo. The BAFMA can be capsule shaped and composed of two identical subassemblies that are operably connected to form a volume for containing the device or cargo. The center of some systems may comprise a bladder filled with a fluid body, which may be a dilatant or adsorbent material. There are layers with different material physical and chemical properties that surround the inner volume. The BAFMA can contain hazardous contents on aircraft, intermodal transportation systems, and can be used in bomb disposal operations. Further applications include BAFMA as a battery blanket useful for retarding and suppressing battery fires, including lithium-ion battery fires.

The utility model provides a kind of fresh seafood transportation intelligence, including transport cabin, supply unit, the supply unit is used to provide clean water and oxygen to transport cabin, the supply unit includes mixing cylinder, the mixing cylinder two sides are provided with water storage tank and oxygen storage tank respectively, the water storage tank and oxygen storage tank are connected with mixing cylinder by feeding assembly, the mixing cylinder is connected with transport cabin by pumping component;Mixing assembly is provided in the mixing cylinder, and the mixing assembly is used to mix the substance in the mixing cylinder.The utility model utilizes mixing cylinder, feeding assembly and pumping component and other structures can send clean water into transport cabin, and utilize mixing assembly can mix the water body in the mixing cylinder, and cooperate temperature control component can deliver different oxygen content, temperature water body into transport cabin, can satisfy the survival needs of different seafood, ensure the survival rate of seafood in the process of transportation, reduce the cost of seafood transportation.

The utility model discloses a wind volume self -adaptation heat accumulation type organic waste gas treatment integrated machine relates to heat accumulation type organic waste gas treatment technical field, including no. The utility model discloses a solenoid valve, wind speed and volume sensor, temperature sensor and control module are set up, so that wind speed and volume sensor can carry out real -time monitoring to the wind speed and volume of inside flow of no.

The application discloses a kind of waste copper pyrogenic regeneration intensive smelting device, including support, and for being arranged on the smelting furnace of support, copper water separation component, copper water shaping component, scraping component and lifting driver, copper water separation component and copper water shaping component are used to be sequentially arranged under smelting furnace, so that the copper water smelted by smelting furnace is separated by copper water separation component and then transmitted into each cavity of copper water shaping component to be shaped, scraping component includes multiple scrapers, transmission support rod for being connected with multiple scrapers, and guide support rod arranged on support, part of transmission support rod is slidably connected with guide support rod, wherein, lifting driver is used to drive copper water shaping component, scraper and transmission support rod to carry out synchronous lifting movement, by the setting, before copper water shaping, complete the separation process of dross, solve the removal mode of dross in the prior art, there is the technical problem of low efficiency and causing the risk of casualties of operating personnel.

The application discloses a quaternary solid waste-based soil stabilizer (GSCP) for a base layer, which is composed of slag (GGBFS), steel slag (SSA), calcium carbide slag (CS) and phosphogypsum (PG) and has a weight ratio of GGBFS:SSA:CS:PG=56:24:12:8. The stabilizer forms C-S-H colloid and ettringite (AFt) through alkaline activation and sulfate activation, does not need to add cement or chemical activator, is used for stabilizing silty clay and steel slag mixed soil, and significantly improves the unconfined compressive strength, splitting tensile strength, water stability and freeze-thaw resistance. Compared with a traditional cement-based stabilizer, the application reduces carbon emission by 82% and cost by 31.25%, provides a low-carbon and economical solution for road engineering, and is suitable for the base layer and the subbase layer of a secondary road or above.