3509results about "Combustible gas purification" patented technology

The present invention relates to a production and energy system based on a new energy-powered submerged arc furnace, and a related control method. The production and energy system comprises a power transmission and distribution system, a renewable energy power generation system, an energy storage system, and a submerged arc furnace-based production system. The power transmission and distribution system is respectively connected to the renewable energy power generation system, the energy storage system, and the submerged arc furnace-based production system. The production and energy system further comprises an energy control system. The energy control system comprises: an integrated regulation and control system used for performing integrated regulation and control on the production and energy system by means of the power transmission and distribution system; a renewable energy power generation control system used for controlling operation of the renewable energy power generation system; an energy storage control system used for controlling operation of the energy storage system; and a submerged arc furnace-based production control system used for controlling operation of the submerged arc furnace-based production system. Compared with the prior art, the present invention has the advantages of optimizing energy utilization, achieving environmental protection and low-carbon development, improving the stability and reliability of the energy system, etc.

The embodiment of the invention provides an air supply system and an air supply method of an air suspension. The air supply system of the air suspension comprises an air storage tank, a plurality of air springs, an air supply valve body unit, a dryer, a heating element, an electronic control unit and a humidity sensor. The air storage tank is used for storing compressed air; the air spring is used for inputting high-pressure gas to each wheel of the vehicle; the air supply valve body unit comprises a reversing valve; the reversing valve is arranged on an air channel, so that the air supply system is driven to be switched between the air suction mode and the reverse blowing mode through reversing of the reversing valve; the cavity of the dryer is communicated with the air supply valve body unit through an air channel; the heating element is arranged in a cavity of the dryer, the humidity sensor is arranged on the air channel, and the humidity sensor corresponds to the electronic control unit in a signal mode. Therefore, the air supply system of the air suspension has the advantage that the regeneration efficiency of the dryer is improved.

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.

The invention discloses a preparation and regeneration method of an iron-aluminum-lanthanum-based composite fluorine removal agent, relates to the technical field of fluorine removal agent preparation, and aims to solve the problem that the performance of an existing fluorine removal agent needs to be improved. The preparation method comprises the following steps: weighing raw materials according to a molar ratio of iron ions to aluminum ions to lanthanum ions of 1: 1: 1, fully stirring and dissolving the raw materials in deionized water at room temperature, and making the volume constant to prepare a clear mixed solution; adding excessive triethanolamine into the mixed solution, dropwise adding a nitric acid solution, adjusting the pH value of the mixed solution to 3.0-4.0, continuously stirring at room temperature, and fully reacting to obtain a precursor solution; continuously heating and stirring the precursor liquid at 150 DEG C for dehydration to obtain organic group brown fluffy precursor powder; fully grinding the precursor powder, and calcining to obtain a gray powdery iron-aluminum-lanthanum-based composite fluorine removal agent; the method is simple, the prepared fluorine removal agent is large in adsorption capacity and short in reaction time, most of the adsorption capacity can be recovered through simple acid pickling, operation is easy, the service life is long, and the regeneration cost is low.

The invention relates to the technical field of environmental materials and water treatment, in particular to a graphene amino silica gel composite adsorbent for heavy metal wastewater treatment and a preparation method thereof.The graphene amino silica gel composite adsorbent is prepared from # imgabs0 nanoparticles, an amino-functionalized silicon dioxide coating layer, carboxylated reduced graphene oxide, a polydopamine modification layer and tetraethyl orthosilicate; the coating is prepared from the following raw materials: 3-aminopropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, N-((4-vinyl benzyl) amino) diacetic acid, chitosan, beta-cyclodextrin, hexadecyl trimethyl ammonium bromide, polyethylene glycol, L-ascorbic acid, 1-ethyl-3-(3-dimethyl aminopropyl) carbodiimide hydrochloride and N-hydroxysuccinimide. The composite adsorbent shows excellent adsorption performance on various heavy metal ions, and the adsorption performance is far higher than that of traditional adsorption materials and existing composite adsorbents.

The invention discloses a zeolite adsorption and desorption integrated treatment system, and particularly relates to the field of zeolite separation treatment, and the zeolite adsorption and desorption integrated treatment system comprises a process sensing module, a dynamic partition control module, a global optimization control module and a cooling regeneration module. According to the zeolite adsorption and desorption integrated treatment system, the problem of blind operation in the traditional technology is solved through the process sensing module, a data basis is provided for dynamic partition, the intelligent monitoring level is improved, and the performance of an adsorbent is fully exerted; the problem of non-uniform heat and mass transfer of a bed layer is effectively solved through the dynamic partition control module, the desorption heat utilization efficiency is improved, and meanwhile, the service life of an adsorbent is prolonged; a dynamic optimization function is constructed through the global optimization control module, energy consumption, solvent recovery income and stability are comprehensively considered, self-adaptive adjustment of operation parameters is achieved, the energy consumption is reduced while the processing efficiency is guaranteed, and the environmental benefits are remarkably improved.

The dryer comprises a dryer shell, an inner cavity of the dryer shell is divided into a drying agent cavity and a heating module wiring cavity which are independent of each other through an end face structure, a heating module barrel sleeve is arranged on the end face structure in a penetrating mode, and the two ends of the heating module barrel sleeve stretch into the two independent cavities respectively. Two air tap connectors communicated with the drying agent cavity are arranged on the outer wall of the dryer shell at intervals, a drying agent drying assembly is arranged between the outer wall, located between the two air tap connectors, of the heating module barrel sleeve and the inner wall of the dryer shell, and a heating body assembly is arranged in the heating module barrel sleeve. A connector assembly is arranged on the outer wall of the dryer shell and used for being connected with an external power source, and the heating body assembly is electrically connected with the connector assembly. According to the invention, related connector design is simplified, product cost is reduced, airtightness failure caused by structural deformation after long-term work of the plastic assembly is avoided, high-efficiency and low-loss heating control can be realized, and system arrangement is more flexible.

The utility model provides a cyclically-operated carbon dioxide trapping device. A shell of the cyclically-operated carbon dioxide trapping device is connected with an air inlet pipeline, an air outlet pipeline and an exhaust pipeline; the shell is internally provided with a reaction box body, the reaction box body is provided with two reaction cabins, and each reaction cabin is internally provided with a fan, a heater and a carbon dioxide adsorption structure; the air inlet pipeline is connected to the air inlets of the two reaction cabins and is close to the draught fan, the draught fan is used for sucking indoor air into the corresponding reaction box bodies and enabling the indoor air to flow through the heater and the carbon dioxide adsorption structure, and the carbon dioxide adsorption structure is used for adsorbing carbon dioxide in the flowing air; the heater is used for heating flowing air and desorbing carbon dioxide adsorbed in the carbon dioxide adsorption structure; and the two reaction cabins alternately perform adsorption and desorption of carbon dioxide. The device is convenient to operate and can continuously and efficiently control the concentration of indoor carbon dioxide.

The invention discloses a charcoal nano lanthanum material capable of synchronously removing organic phosphorus and inorganic phosphorus, and belongs to the field of environmental functional materials. The adsorbent comprises biochar and nano lanthanum loaded on the biochar, wherein the biochar is bamboo biochar; the nano lanthanum is in a La (OH) 3 form, the particle size of the nano lanthanum is 1-250nm, and the loading capacity of the nano lanthanum is 3-20wt%; the pore diameter of the biochar nano lanthanum material is 1-30nm, and the specific surface area is 100-250m < 2 > / g. Compared with a biochar-loaded nano lanthanum composite material in the prior art, the composite material has the inorganic phosphorus adsorption performance and also has the organic phosphorus adsorption effect, and inorganic phosphorus and organic phosphorus can be synchronously removed. According to the charcoal nano lanthanum material, organic phosphorus is adsorbed and removed by regulating and controlling the defect form of lanthanum, especially organic phosphonate can be hydrolyzed and removed, meanwhile, large pore channels of bamboo charcoal are beneficial to diffusion of macromolecular organic phosphorus to action sites of lanthanum, and the adsorption and hydrolysis effects of lanthanum on the organic phosphorus are further enhanced.

The phosphazene covalent organic framework (COF) is a material with high efficiency to improve the removal of iodine from nuclear waste. The COF can be obtained by a solvothermal reaction of hexa(4-formyl-phenoxy)cyclotriphosphazene and 1,3,6,8-tetra(aminophenyl)pyrene. The resulting three-dimensional phosphazene COF has iodine uptakes as high as 9.4 g g−1 due to its 3D framework with higher specific surface areas and interconnected channels.

The present invention provides a zirconium-based metal-organic framework material and a preparation method therefor and the use thereof, and an adsorption separation device and method. The zirconium-based metal-organic framework material has a chemical structural formula of [C18H6O16Zr3]n, and comprises zirconium and an organic ligand forming a coordination bond with zirconium, wherein the organic ligand is diphenylethyne-3,3′,5,5′-tetracarboxylic acid. The molecular structure of the zirconium-based metal-organic framework material of the present invention is a three-position network structure having a one-dimensional channel; and in the present invention, the size of the one-dimensional channel is accurately controlled by changing the aspect ratio of the organic ligand, such that the zirconium-based metal-organic framework material efficiently separates a hexane isomer by means of a kinetic effect.

The present invention discloses a high and low voltage complete switchgear, belonging to the field of switchgear. A high and low voltage complete switchgear comprises a switch cabinet, and also comprises: a ventilation channel symmetrically arranged on the side wall of the switch cabinet, a heat dissipation and dust removal component is arranged inside the ventilation channel, which is used to dissipate heat for the electrical equipment in the switch cabinet and prevent dust from entering; a flow guide mechanism arranged on the inner wall of the switch cabinet near the ventilation channel, a part of the structure of the heat dissipation and dust removal component is connected to the flow guide mechanism, and a part of the structure of the flow guide mechanism can be driven to reciprocate up and down; a cleaning mechanism arranged on the outer wall of the switch cabinet near the ventilation channel, a part of the structure of the flow guide mechanism is connected to the cleaning mechanism, and a part of the structure of the cleaning mechanism can be driven to reciprocate along the end of the ventilation channel; the present invention can overcome the problems of uneven heat dissipation and poor effect of electrical equipment inside the high and low voltage complete switchgear, untimely cleaning of the dustproof plate, and poor dehumidification effect.

The invention provides an inert gas generation system, and relates to the technical field of industrial gas production. The inert gas generation system comprises the following modules: a gas pretreatment module, an intelligent separation module, a dynamic purification module, a pressure regulation and control module, a quality analysis module, a safety control module and an energy efficiency optimization module, and the gas pretreatment module is used for removing particulate matters through an electrostatic dust collection device by adopting a multi-stage gradient filtering algorithm based on ambient air input, adjusting humidity by combining a dew point control technology, forming a standardized gas source and generating a standard gas source. Through combination of a multi-stage gradient filtering algorithm and a dew point control technology, collaborative treatment of particulate matters and humidity is realized, stable gas source input is formed, the reliability of a subsequent processing link is improved, membrane separation parameters are dynamically predicted by applying a convolutional neural network model, and the permeation efficiency of a hollow fiber membrane stack is optimized.

The invention relates to a synthetic method of an ionic liquid and ZIF-8 composite material, which comprises the following steps: S11, adding 2-methylimidazole and octadecyl guanidine chloride into a polyethylene glycol 400 aqueous solution to obtain a solution I; s12, Zn (NO3) 2.6 H2O is added into a polyethylene glycol 400 aqueous solution, and a solution II is obtained; s13, mixing and stirring the solution I and the solution II for reaction, and centrifugally collecting obtained ZIF-8 nanoparticles; s2, adding the ZIF-8 nanoparticles into a sodium phosphotungstate solution, stirring to disperse the ZIF-8 nanoparticles into a suspension, then adding a dodecyl guanidine chloride aqueous solution into the suspension, and carrying out an ion exchange reaction; and centrifuging after the ion exchange reaction is finished. The invention further relates to application of the synthetic method of the ionic liquid and ZIF-8 composite material, and the ionic liquid and ZIF-8 composite material is used for adsorbing 2, 4-D in water. The preparation method is simple, the ionic liquid and the ZIF-8 composite material have good adsorption performance on 2, 4-D in water, and the 2, 4-D is convenient to desorb and is convenient to recycle.

The invention relates to the technical field of gas drying, and discloses a rapid regeneration adsorption tower which comprises a drying tower and adsorbents, a gas inlet is formed in the top of the drying tower, a gas outlet is formed in the bottom of the drying tower, a plurality of groups of adsorbents are arranged in the drying tower, and supporting filter plates are arranged at the top ends and the bottom ends of the adsorbents. A fixed shaft internally provided with an air pipe is coaxially and rotatably connected in the drying tower, the fixed shaft penetrates through the supporting filter plate and is rotatably connected with the supporting filter plate, a flow guide disc is arranged between every two groups of adsorbents, the flow guide discs are coaxially and fixedly connected with the fixed shaft, and main distribution channels are formed in the flow guide discs in a circumferential array manner; flow guide channels are further formed in the flow guide disc in a circumferential array mode, and the gas flow speed of the flow guide channels is larger than that of the main distribution channels; a negative pressure area is formed at the outlet of the flow guide channel, low-speed airflow of the main distribution channel is sucked, violent turbulence mixing is triggered, the penetrating uniformity of gas in an adsorbent layer is greatly improved, and the regeneration efficiency of the adsorption tower is improved.

The invention relates to the technical field of waste gas treatment devices, and discloses a cable production waste gas treatment device and method.The cable production waste gas treatment device comprises a water tank, a gas inlet pipe communicated with the interior of the water tank is fixedly installed on the outer surface, close to the bottom, of the water tank, and a gas outlet pipe communicated with the interior of the water tank is fixedly installed at the top end of the water tank; a supporting cover communicating with the interior of the air outlet pipe is fixedly installed at the top end of the air outlet pipe, the top of the supporting cover is of an opening structure, a rotating disc is rotatably installed in the supporting cover, three storage holes are formed in the upper surface of the rotating disc in the circumferential direction at equal intervals in a penetrating mode, and the storage holes are filled with activated carbon particles. When activated carbon particles for purifying waste gas reach a saturated state, the rotating disc is driven by the stepping motor to rotate, so that the rotating disc can drive the activated carbon particles in the saturated state to rotate to the position above the electric heating block, and the desorbed activated carbon particles are replaced to the gas outlet pipe so as to continuously purify the waste gas.

The invention relates to the technical field of air compression stations, in particular to an air bearing-based digital energy air compression station with a noise reduction effect, which comprises a machine room, and a screw air compressor, a cooler, an oil-water separator, a first air storage tank, a dryer, a filter and a second air storage tank which are sequentially connected are arranged in the machine room. The first air storage tank is further connected with a first air supply pipe, and the second air storage tank is further connected with a second air supply pipe. An air bearing is selected for the screw type air compressor, a third air supply pipe is arranged between the filter and the second air storage tank, the third air supply pipe is connected with the air bearing, and part of compressed air is continuously input into an air path of the air bearing through the third air supply pipe. According to the screw type air compressor, mechanical friction can be avoided through the air bearing, so that noise is further reduced, the noise reduction effect of the digital energy air compressor is improved, and compressed air can be conveniently obtained by the air bearing in an air compression station.

The invention relates to the field of ginsenoside extraction, in particular to a device and method for removing a plasticizer in a ginsenoside extract, and the device comprises a roll-over stand, a removal cabin and the like. According to the equipment and the method for removing the plasticizer in the ginsenoside extract, the filtering assembly and the adsorption resin blocks are distributed in the removal cabin in the vertical direction, so that fine filtering treatment and adsorption removal treatment of a ginsenoside extract solution are completed in sequence; and in addition, the filter assembly and the plurality of adsorption resin blocks can be subjected to backwashing treatment in a mutually separated state, so that the overall treatment process steps of the backwashing treatment work are reduced on the basis of ensuring that efficient backwashing treatment is synchronously performed on the filter assembly and all the adsorption resin blocks. The defects that multiple treatment devices need to be used in multiple filtering treatment and ion adsorption treatment processes of the ginsenoside extract solution, the plasticizer removal treatment efficiency is affected, and the plasticizer removal treatment period is delayed are overcome.

The invention discloses a preparation method and application of phytic acid modified zero-valent iron. The method comprises the following steps: (1) mixing phytate and liquid phytic acid according to a molar ratio of (5: 5)-(8: 2), and preparing a buffer solution with the concentration of 0.05-0.5 mol / L; (2) adding micron or nano zero-valent iron into a buffer solution according to a solid-to-liquid ratio of 1: 10 to 1: 50 (g / mL), and transferring to a polytetrafluoroethylene reaction kettle; (3) under the protection of nitrogen, reacting for 6-48 hours under the conditions that the temperature is 20-80 DEG C and the oscillation rate is 100-1000 rpm, and controlling the pH value to be 3.5-5.5; and (4) after the reaction, carrying out suction filtration, ethanol-water alternate washing and vacuum drying to prepare the modified zero-valent iron with the surface coated with the phytic acid iron complex. A stable chelation layer is formed on the surface of phytic acid molecules and zero-valent iron, the oxidation resistance, dispersity and heavy metal adsorption capacity of the material are remarkably improved, and the material is suitable for efficient repair of industrial wastewater.

The invention provides a system and method for improving the ability of activated carbon to adsorb medium and low temperature VOCs waste gas, and the system comprises: a heat exchanger for introducing steam heat of the medium and low temperature VOCs waste gas to perform waste heat recovery to generate high temperature circulating water; the refrigerating system is used for receiving the high-temperature circulating water through a pipeline and recovering heat of the high-temperature circulating water to enable the refrigerating system to generate a refrigerant, and the refrigerant enters the heat exchanger to exchange heat with the medium-low-temperature VOCs waste gas; the activated carbon fixed bed adsorption device is used for receiving the medium and low temperature VOCs waste gas after heat exchange and adsorbing organic gas in the waste gas; the steam thermal desorption device is used for introducing steam into the activated carbon fixed bed adsorption device for desorption after the activated carbon fixed bed adsorption device is saturated in adsorption, and the steam takes away the organic gas adsorbed by the activated carbon fixed bed adsorption device and enters a downstream phase change heat exchanger; and the phase change heat exchanger is used for recycling steam heat after analysis by using circulating water to generate high-temperature circulating water, and after heat is recycled, waste gas is condensed, so that organic gas is dissolved in water to form an organic solvent to be recycled.

The invention relates to a system (10) for separating a gas and / or humidity from the ambient air (11). The system comprises a flow generator (24) for conveying the ambient air (11) through the system (10), a process chamber (12) for drying the ambient air (11), and / or a process chamber (30) for separating a gas, in particular carbon dioxide (70), from the ambient air (11). A sorption element (16, 36) with a sorbent material (18, 38) for binding humidity from the ambient air (11) and / or for separating a gas, in particular carbon dioxide (70), from the ambient air (11) is arranged in the process chamber (12, 30). It is provided that the second sorption element (34) has a plurality of heatable sorption cells (60 - 68) which are arranged in at least two different cascades (50-58) in the direction of flow of a gas stream (72) through the second process chamber (30), and at least two heating elements (40, 41), wherein at least one heating element (40, 41) is assigned to each cascade (50-58), and wherein the cascades (50-58) are sequentially supplied with ambient air (11), so that the waste heat of the sorption cells (60) of the first cascade (50) is transferred to the sorption cells (62) of the second cascade (52).

The invention provides a method for treating fluorine-containing wastewater, which adopts a multi-tower adsorption system to treat the fluorine-containing wastewater, and the method for treating the fluorine-containing wastewater comprises the following steps: S1, at least two adsorption towers execute adsorption operation, the fluorine-containing wastewater flows out after being introduced into one adsorption tower, and then enters the other adsorption towers executing the adsorption operation, and standard water is obtained at an outlet; at least two adsorption towers execute desorption and regeneration operations, a regenerant flows out after being introduced into one adsorption tower executing the desorption and regeneration operations, and then enters the other adsorption towers executing the desorption and regeneration operations, and a fluorine-rich solution is obtained at an outlet; s2, storing or discharging water reaching the standard, cleaning the adsorption tower executing desorption and regeneration operation, and returning a cleaning solution to a fluorine-containing wastewater storage tank; s3, treating the fluorine-rich solution, and returning the treated fluorine-poor solution to the fluorine-containing wastewater storage tank; and S4, the step S1 to the step S3 are cycled in sequence. According to the method for treating the fluorine-containing wastewater, the adsorption time of the adsorption tower is prolonged, and the utilization rate of the adsorption tower is increased.

The invention discloses a preparation method and application of self-crosslinking hydrogel containing a capsaicin functional structure, and belongs to the technical field of dye adsorption materials. The capsaicin functional structure monomer is introduced into an acrylic acid system, so that the self-crosslinking of the hydrogel is realized, and meanwhile, the adsorption performance of the hydrogel is remarkably improved; mono-substituted capsaicin functional structure monomers containing carboxyl and sulfonic acid groups are used as components, a disubstituted capsaicin functional structure monomer with polyhydroxy and carboxyl is used as a cross-linking agent, the self-crosslinking hydrogel with multiple adsorption sites is successfully constructed through free radical polymerization, and the adsorption capacity and efficiency of the hydrogel are greatly improved. The hydrogel-based carbon material is obtained by carbonizing the self-crosslinking hydrogel containing the capsaicin functional structure, the adsorption performance of the hydrogel material is further improved, the obtained hydrogel-based carbon material can be desorbed and recycled in ethyl alcohol, and the service life of the hydrogel-based carbon material is prolonged. And the problem of secondary pollution of the existing hydrogel material in the acid / alkali desorption process is effectively avoided.

The invention discloses a carbon dioxide trapping method which comprises the steps of feeding, adsorption, material replacement, primary desorption and secondary desorption, in the material replacement step, after the replacement process of a single adsorption and desorption unit lasts for M, a valve of the adsorption and desorption unit is closed, and the replacement process is repeated after the replacement process is stopped for (N-1) M, n is the total number of the adsorption and desorption units arranged in parallel, in the process that a single adsorption and desorption unit stops running, the pipe chain conveyor continuously runs, the other adsorption and desorption units alternately carry out solid amine material replacement, and the replacement time and the stop time are equal; according to the two-stage desorption, carbon dioxide in a solid amine material is fully desorbed through high-temperature desorption and negative-pressure desorption, a plurality of adsorption and desorption units alternately perform replacement so that the equipment can continuously run, the efficiency of the carbon dioxide trapping process is improved by combining the two-stage desorption operation, and the cost loss caused by the vacuum period of the equipment in the trapping process is reduced. The invention further discloses a carbon dioxide trapping device.

Systems and methods for producing green hydrogen from a source material (e.g., biowaste) are contemplated. The source material is at least partially dehydrated to produce a dried intermediate and recovered water. The dried intermediate is pyrolyzed to produce syngas and a char. The recovered water is electrolyzed to produce oxygen and green hydrogen.

The invention relates to a corrosion and scale inhibitor for TRT and a preparation method of the corrosion and scale inhibitor, and relates to the technical field of chemical reagents. The corrosion and scale inhibitor is prepared from the following components in percentage by mass: 15 to 20 percent of morpholine, 25 to 30 percent of aminoethyl ethanolamine, 15 to 20 percent of 1-hydroxyethyl-2-undecylimidazoline onium salt, 12 to 18 percent of sodium polyaspartate, 8 to 12 percent of itaconic acid-allylsulfonic acid copolymer, 1 to 3 percent of alkyl glycoside and the balance of a mixture of water and glycerol in a mass ratio of 1 to (1 to 3). The corrosion and scale inhibitor disclosed by the invention can synchronously inhibit corrosion of an acid medium and scale deposition of salts such as NH4Cl and the like, and the corrosion inhibition rate and the scale inhibition rate are effectively improved.

The utility model relates to the technical field of zeolite adsorption and desorption all-in-one machines, and discloses a zeolite adsorption and desorption all-in-one machine convenient to operate, which comprises an equipment box, operation cavities are arranged on both sides in the equipment box, through holes are arranged in the middle parts of the opposite sides of the two operation cavities, and sealing assemblies are fixedly arranged at both upper and lower ends in the through holes. A moving assembly is fixedly arranged in the middle of one side of one of the two operation cavities, a molecular sieve is fixedly connected to the moving assembly, clamping grooves are formed in the middles of the two sides of the upper end and the lower end of the molecular sieve, and a second funnel is fixedly arranged at the position, close to the lower portion, in one of the two operation cavities; an air blower is fixedly arranged on the inner top surface of the other one of the two operation cavities, and a heating pipe is fixedly arranged at the lower end of the air blower. According to the waste gas treatment device, the efficiency of waste gas adsorption and desorption treatment is improved, the operation is more convenient for workers, and the time and the workload are reduced.

The invention discloses a high-low voltage complete switch device, and belongs to the field of switch devices. A high-low voltage complete switch device comprises a switch cabinet and further comprises ventilation channels symmetrically arranged on the side wall of the switch cabinet, and heat dissipation and dust removal assemblies are arranged in the ventilation channels and used for conducting heat dissipation on electrical equipment in the switch cabinet and preventing dust from entering the switch cabinet; the diversion mechanism is arranged on one side, close to the ventilation channel, of the inner wall of the switch cabinet, and part of the heat dissipation and dust removal assembly is connected with the diversion mechanism and can drive part of the diversion mechanism to rotate up and down in a reciprocating mode; the cleaning mechanism is arranged on the side, close to the ventilation channel, of the outer wall of the switch cabinet, and part of the structure of the flow guide mechanism is connected with the cleaning mechanism and can drive part of the structure of the cleaning mechanism to rotate back and forth along the end of the ventilation channel; according to the invention, the problems of non-uniform heat dissipation, poor heat dissipation effect, untimely cleaning of the dustproof plate and poor dehumidification effect of electrical equipment in the high-low voltage switchgear assembly can be solved.

To provide a solid absorber having low hygroscopic property and capable of efficiently absorbing a sour gas, especially reversibly absorbing carbon dioxide.SOLUTION: A solid absorber reversibly absorbs a sour gas and includes a porous base material and a sour gas absorption chemical agent carried with the porous base material. The sour gas absorption chemical agent includes at least one amine expressed as any one of general formula (1), (2) and (3). (In formula (1), (2) and (3), R1 is expressed as group:-(CH2)l-NH-[(CH2)2NH]m-(CH2)n-CH3 and in R1, l is expressed as 1 or 2 and m and n are independently expressed as an integer of 0-2.)SELECTED DRAWING: Figure 1

The present invention relates to the technical field of preparation of adsorbent materials for removing heavy metals from acidic wastewater, specifically a method for preparing a resin-based magnetic composite adsorbent material, comprising the following steps: using waste expanded resin as a base carrier, ferric chloride as an added magnetic auxiliary substance, mixing magnesium sulfate and aluminum sulfate evenly, stirring at high speed and ultrasonic dispersion, then adding sodium phosphite and sodium hypophosphite and placing them in a microwave reactor, adjusting the pH of the sodium phosphite and sodium hypophosphite in the reactor to precipitate, while the phosphite intercalates into the precipitate, finally filtering the precipitate and washing and drying to obtain a novel adsorbent material for excellent adsorption of heavy metals in acidic mine wastewater. The material prepared by the present invention can effectively adsorb various heavy metal ions such as cadmium, chromium, zinc, lead, manganese, copper, etc. in acidic mine wastewater, has a large adsorption capacity, and the adsorbent material has magnetism and can be regenerated by solid-liquid separation through magnetism.