18results about How to "Reduce land occupation" patented technology

This invention belongs to the field of flood drainage and seepage technology for valley ash dumps. It proposes a composite flood drainage and seepage system and method for use in power plant valley ash dumps. The invention includes a drainage ditch set along the direction from the flood control dam towards the initial dam of the ash dump. The drainage ditch includes a flood drainage culvert at the bottom of the ash dump, a seepage ditch and a flood drainage ditch located above the flood drainage culvert. The bottoms of the seepage ditch and the flood drainage ditch share a common pool wall with the upper part of the flood drainage culvert. The adjacent side walls of the seepage ditch and the flood drainage ditch also share a common pool wall. This effectively reduces the foundation treatment area and land occupation, as well as the amount of steel reinforcement and concrete used, thus lowering the project cost. Simultaneously, the flood drainage ditch has an opening at its upper part and a cover plate placement groove. A seepage pipe is installed at the end of the drainage ditch away from the flood control dam. This system is suitable not only for flood drainage and seepage when upstream floodwaters flow into the ash dump along the slopes of both banks, but also for flood drainage and seepage under conditions of high rainfall.

The application provides a matrix converter system and a control method thereof. The matrix converter system comprises a first output port and a second output port, at least two phases, N converter valve bridge arms, Q first magnetic elements, the i-th first magnetic element comprises N first ports, M second ports, the N first ports of the i-th first magnetic element are connected in series with one end of the N converter valve bridge arms respectively, the other end of the N converter valve bridge arms is connected with any one phase of the first output port respectively, and the other end of at least one converter valve bridge arm is connected with a phase of the first output port which is different from the phase of the first output port connected with the other end of the remaining converter valve bridge arms, and the M second ports of the i-th first magnetic element are connected with any one phase of the second output port respectively, and at least one second port is connected with a phase of the second output port which is different from the phase of the second output port connected with the remaining second ports. i i i i i i ​​​​​​

This invention discloses an integrated device for purifying impurities in electrolytically produced gases and enriching carbon dioxide based on pressure swing adsorption (PSA), belonging to the field of gas separation and new energy utilization technology. The device includes a water electrolysis unit, a PSA unit, and a control unit. The water electrolysis unit uses renewable energy to electrolyze water to produce crude hydrogen. The PSA unit comprises at least two sets of adsorption towers connected in parallel, filled with a composite adsorbent that selectively adsorbs oxygen and carbon dioxide. The control unit uses time-series control to alternately operate the adsorption towers between a "purification mode" and an "enrichment and regeneration mode." In purification mode, the adsorption towers remove oxygen impurities from the crude hydrogen; in enrichment and regeneration mode, the adsorption towers adsorb carbon dioxide from an external gas source and output enriched gas through vacuum desorption. This invention achieves high integration and low energy consumption by time-sharing reuse of the same set of adsorption towers, making it particularly suitable for preparing raw material gas for hydrogen autotrophic microorganisms to synthesize single-cell proteins (air proteins).

This invention discloses a liquefied petroleum gas (LPG) hydrodeolefins desulfurization process. The raw materials are one or more types of LPG derived from refinery catalytic cracking, coking, and other units, as well as light hydrocarbons derived from oil and gas fields. The incoming LPG is pressurized and mixed with hydrogen, then heated and vaporized before entering the hydrorefining reactor. The high-temperature gaseous hydrorefining reaction product enters the desulfurization reactor for fine desulfurization. The reaction effluent after fine desulfurization is heat-exchanged and cooled before entering a low-pressure separator. The low-pressure separator generates a low-density gas at the top, which is pressurized and mixed with fresh hydrogen from outside the unit to form mixed hydrogen. The refined LPG at the bottom of the low-pressure separator is pressurized and sent to the gas separation unit.

The application discloses a calcium carbide furnace tail gas deep purification process. The calcium carbide furnace tail gas is firstly subjected to wet desulfurization and dehydrocyanation and TSA treatment, and then sequentially enters a de-fluorine and de-hydrocyanation reactor, a hydrolysis desulfurization reactor, a fine desulfurization reactor, a de-phosphorus and de-arsenic reactor, a de-oxygen reactor and a de-hydrocarbon reactor. After the treatment process, the HCl content in the gas is less than 0.1 ppm, the HF content is less than 0.1 ppm, the HCN content is less than 0.1 ppm, the total sulfur content is less than 0.1 ppm, the AsH3 content is less than 5 ppb, the PH3 content is less than 5 ppb, the oxygen content is less than 10 ppm, and the unsaturated hydrocarbon content is less than 0.1 ppm, thereby meeting the separation and purification requirements of subsequent processes, and the pressure drop of the whole process is not more than 100 kPa. The process can remove oxygen and unsaturated hydrocarbons in the gas under low-temperature conditions, thereby reducing the occurrence of side reactions, and has the characteristics of reasonable process design, high purification precision, low energy consumption and low operation cost.

This invention relates to the technical field of water electrolysis hydrogen production equipment, providing a T-type coupled gas-liquid separation and condensation integrated device and its working process for water electrolysis hydrogen production. The device includes a housing comprising a horizontal separation section, a vertical condensation section, and a liquid collection section. The liquid collection section and the vertical condensation section are located on the same vertical plane, with the vertical condensation section positioned above the liquid collection section. The horizontal separation section, vertical condensation section, and liquid collection section are connected and together form a T-shaped structure. A gas deflection channel is formed at the intersection of the vertical condensation section and the horizontal separation section, causing the gas after initial liquid removal to change from horizontal flow to vertical upward flow. The deflection channel forms a flow guiding transition structure to prevent secondary entrainment caused by eddies in the gas flow. This invention employs a three-stage synergistic purification process, achieving excellent gas-liquid separation and demisting efficiency. It utilizes a three-stage synergistic treatment mechanism of gas-liquid cyclone initial separation + deep condensation dehydration + wire mesh demisting, combined with a strong swirling flow field to enhance droplet detachment and a flow equalization plate to optimize airflow distribution, effectively removing electrolyte droplets and water vapor entrained in the gas.

The utility model relates to a horizontal tar ammonia water separation device, including groove body, flow channel baffle, tar ammonia water inlet pipe, heavy tar outlet pipe, light tar outlet pipe and ammonia water outlet pipe, one end of groove body is equipped with tar ammonia water entrance, the other end of groove body is equipped with light tar outlet, ammonia water outlet and heavy tar outlet, a plurality of flow channel baffles are arranged in groove body along the tar ammonia water flowing direction interval, form the tar ammonia water flow channel of serpentine, the surface of flow channel baffle is sprayed with hydrophobic oleophilic material coating, the horizontal tar ammonia water separation device can guarantee the full separation of light tar, heavy tar and ammonia water, improve separation efficiency, and save the floor area greatly, save investment, solve the problem that the existing tar ammonia water separation device separation effect is poor, tar ammonia water stays long, equipment floor area is big, total investment is high.

This invention relates to the field of activated carbon processing technology, and more particularly to an internally heated activated carbon activation furnace, comprising an activation tank and impeller fans. A pair of impeller fans are provided, and a fixed frame is located behind the activation tank. The impeller fans are all bolted to the fixed frame, and a rear frame is located behind the fixed frame. This invention adopts a dual-exhaust structure, with independent impeller fans at the furnace head and furnace tail. The furnace head impeller fan is dedicated to extracting smoke and dust from the furnace entrance, while the furnace tail impeller fan maintains negative pressure in the furnace chamber. The airflow of the two paths can be precisely adjusted, and the system always maintains a slight negative pressure at the furnace entrance, preventing dust overflow and ensuring a clean workshop environment. Through the setting of the adjustment mechanism, when maintaining one impeller fan, only the other impeller fan needs to be controlled to increase its power. Using a pressure stabilizing tank, rapid switching of impeller fans can be achieved. Using a single impeller fan to operate the dual-exhaust structure allows for non-stop maintenance, ensuring continuous and efficient operation of the activation furnace, while reducing equipment investment and floor space.

The invention discloses equipment for preparing high-purity ammonium rhenate by directly purifying a low-concentration rhenium solution. The equipment comprises a feeding unit, a resin pretreatment unit, an adsorption unit, a directional impurity removal unit, a sectional elution unit, a circulating enrichment unit and an evaporative crystallization unit which are controlled by a control unit in a centralized manner, a resin pretreatment unit with an annular distributor is arranged at the top of the adsorption column, uniform backwashing and ammonium activation are realized, impurities are selectively removed through a directional impurity removal unit after adsorption, and low-concentration eluent flows back to the adsorption column for secondary adsorption and enrichment through a sectional elution and circulating enrichment unit; feeding the high-concentration rhenium-rich liquid into an evaporative crystallization unit, and returning mother liquid to a system for circulation; therefore, through integrated integration and full-process automatic control, efficient adsorption, deep impurity removal, internal circulation concentration and high-purity crystallization of low-concentration rhenium are achieved, and the technical problems that in a traditional process, the adsorption rate is low, the product purity is insufficient, high-energy-consumption external concentration equipment is depended on, and operation is complex are solved.

The invention relates to a multifunctional integrated hydrogenation system based on a direct-driven compression module and a hydrogenation machine. A first electric valve and a first pressure release valve are arranged on a filling pipeline for connecting a hydrogen source and the direct-driven compression module; a hydrogen source enters the first heat exchange channel for primary precooling and then enters the direct-driven compressor for primary compression; the hydrogen subjected to primary compression enters the direct-driven compressor to be subjected to secondary compression after being subjected to secondary cooling through a second heat exchange channel; after secondary compression, the air enters a third heat exchange channel to be cooled for the third time, and then enters an output pipeline connected with the output end and the direct-drive compression module; temperature and pressure sensors are arranged on a pipeline between the direct-driven compressor and an inlet of the heat exchanger b1 and a pipeline between the direct-driven compressor and an inlet of the heat exchanger c1; the electric control module controls the opening and closing degree of the first electric valve and / or controls the first pressure release valve to release pressure according to the received hydrogen temperature and pressure intensity sent by the temperature sensor and the pressure sensor. According to the invention, high efficiency, compactness and intellectualization of the hydrogenation machine are realized.

The invention provides a power distribution-traffic network coupling optimization configuration method and system considering extreme weather, and the method comprises the steps: firstly constructing a power distribution-traffic network coupling node optimization configuration model which considers the influence of a multi-element mixed traffic flow in a traffic network and traffic waves caused by intersection traffic lights on the road traffic density distribution; the influence of different types of extreme weather on the electrified road is reduced; and solving the optimal configuration model of the power distribution-traffic network coupling nodes to obtain an optimal configuration scheme of electrified roads, energy storage and special transformers of the power distribution-traffic network coupling nodes. According to the method, a mode of combining an electric vehicle dynamic wireless charging system and a pavement paving photovoltaic system is adopted, a road with relatively large overall traffic flow is selected as a candidate coupling node to configure an electrified road, land occupation and power grid dependence of an independent charging station are greatly reduced, and on the premise of ensuring that the charging requirement is met, the charging efficiency is greatly improved. And the dynamic wireless charging service profit of the system is maximized.

The application discloses a device and method for producing high-purity nitrogen by flash exhaust low-temperature pressurization circulation, which comprises an air compressor, a purification system and a cold box, wherein the cold box comprises a main heat exchanger, an expander, a rectifying tower, a flash tower, a condenser and a pressure reducing valve. The application aims at overcoming the problems of low extraction rate, high energy consumption of single-tower rectification and high investment of double-tower rectification in the prior art, and provides a device and method for obtaining high-purity nitrogen by cryogenic separation, which have the advantages of low energy consumption, low investment, small land occupation and economic rationality by recycling the nitrogen component in the flash exhaust and the compression work of the nitrogen component.

This invention discloses a system and method for producing high-value-added hydrocarbons from regenerated flue gas by coupling catalytic cracking and Fischer-Tropsch synthesis, addressing the problems of high carbon dioxide emissions, difficulty in enrichment and recovery, and low product added value in existing catalytic cracking units. The system includes a regenerator, a cyclone separator, a waste heat recovery system, and a flue gas pretreatment system connected in sequence. The outlet of the flue gas pretreatment system is connected to the inlet of the Fischer-Tropsch synthesis reactor via a flue gas compressor. A hydrogen feed pipeline is connected to the inlet of the Fischer-Tropsch synthesis reactor. The outlet of the Fischer-Tropsch synthesis reactor is connected to the inlet of a condensation and crude separation system. The condensation and crude separation system has a wastewater discharge outlet, a crude hydrocarbon product outlet, and a recycle gas outlet. The recycle gas outlet is connected to the inlet of the Fischer-Tropsch synthesis reactor via a pipeline, and the crude hydrocarbon product outlet is connected to a product separation system.

The invention discloses a muck utilization system of a dual-mode shield tunneling machine under compound stratum muddy water and a using method of the muck utilization system, and relates to the technical field of shield construction. The muck utilization system of the dual-mode shield tunneling machine under the compound stratum muddy water comprises a shield tunneling machine 1, a muddy water separation system, a shield slurry mixing system, a filter pressing system, a thick slurry preparation system, a muck cleaning system and a thick slurry injection system. Through cooperation of all the systems, waste muck generated by shield tunneling can be treated and recycled, treated products can be applied to shield tunneling construction, the problem of discarding and transportation of the waste muck is solved, the construction cost is saved, the outsourcing cost of construction raw materials is reduced, the green construction concept is implemented, and the economic benefit is improved. The land occupation of outward transportation of muck is reduced, and good economic benefits and social benefits are achieved.

The invention relates to integrated coating equipment and a manufacturing method of a combined passivation back contact battery. The feeding cavity, the oxide layer process cavity, the silicon nitride process cavity and the discharging cavity are sequentially arranged in the same structure, so that preparation of the silicon oxide layer and the silicon nitride layer can be integrally completed in a continuous and closed environment. Due to the fact that the process cavities are sequentially arranged in the same equipment system, the silicon wafers do not need to be manually or mechanically transferred in the whole process from feeding to discharging, and the problems of atmosphere change, temperature difference fluctuation and external pollution caused by equipment switching in a traditional process are solved. Therefore, the vacuum continuity of the whole manufacturing process is kept, the compactness and the interface cleanliness of the film layer are remarkably improved, and the bonding strength of the film layer is higher. Meanwhile, due to the integrated structure, the configuration requirements of a plurality of devices and a conveying system are reduced, the occupied area and energy consumption of a production line are reduced, the process period is shortened, and the production efficiency and the device utilization rate are remarkably improved.

The utility model belongs to the urban underground space development technical field, concretely relates to an intensive street crossing tunnel and city tunnel combined structure, the combined structure is two layers vertically superimposed arrangement, includes ground floor and underground second floor, sets up the subway and comprehensive pipe gallery in the ground floor, sets up the car tunnel in the underground second floor, the subway and comprehensive pipe gallery are left and right two groups horizontal parallel arrangement, the subway is located in both sides, comprehensive pipe gallery is located in the middle, the car tunnel is one group horizontal parallel arrangement's two -way car tunnel, the top of car tunnel and the bottom of subway and comprehensive pipe gallery share, the both sides outer wall of subway and comprehensive pipe gallery and the both sides outer wall of car tunnel share, simultaneously still include the stairway for connecting the subway and outside, the convenient people walk.

This invention relates to the field of marine technology, specifically disclosing a BOG reliquefaction system for ammonia fuel on a CO2 transport ship. The system includes a liquid ammonia fuel tank, a liquid CO2 storage tank, and a jetting and diversion device. The working fluid inlet and ejector fluid inlet of the jetting and diversion device are connected to the BOG outlet of the liquid CO2 storage tank and the BOG outlet of the liquid ammonia fuel tank, respectively. The mixing fluid outlet of the jetting and diversion device is connected to the inlet of a heat exchanger. The outlet of the heat exchanger is connected to a gas-liquid separator. The CO2 outlet of the gas-liquid separator is connected to a CO2 buffer tank. The first outlet of the CO2 buffer tank is connected to a refrigeration unit, where cooling generates liquid CO2 that flows back to the liquid CO2 storage tank. The liquid ammonia outlet of the gas-liquid separator is connected to the liquid ammonia fuel tank. This invention, with jetting and diversion as its core, achieves efficient synergistic processing of two types of BOG, cold energy recycling, and precise control of storage tank pressure, ensuring flexible and rapid pressure and temperature regulation to meet the needs of complex marine operating conditions.

This utility model relates to the field of water purification technology, and more particularly to a slow filtration water purification device based on a biofilm attached to activated carbon. It includes a first shell and a second shell, connected by a connecting pipe. The first shell contains an activated carbon-coated felt anode layer and an activated carbon-coated felt cathode layer. Both the first and second shells contain a quartz sand-modified activated carbon layer. A ring-shaped water distributor is positioned above the quartz sand-modified activated carbon layer, and a lower pad layer is positioned below it. An ultraviolet lamp is also installed inside the second shell. This utility model, by attaching a biofilm to the surface of activated carbon, utilizes the metabolic and biodegradation capabilities of microorganisms. Simultaneously, it combines the treated water flow with the activated carbon, and through the synergistic effect of the biofilm and adsorption, improves the removal rate of harmful substances in the water, enhances the removal capacity for various pollutants, and improves water purification efficiency and quality.