10838 results about "Activated carbon" patented technology

The invention discloses a positive electrode material for a zinc-bromine flow battery and a preparation method and application thereof, and belongs to the technical field of zinc-bromine flow batteries, the preparation method comprises the following steps: crushing and sieving an active carbon source, adding the active carbon source into a graphene oxide aqueous dispersion, stirring, centrifuging, removing supernate, drying, mixing with an activating agent, and activating in an inert atmosphere; washing to be neutral, drying and sieving to obtain a graphene / activated carbon composite material; and attaching the graphene / activated carbon composite material to a carbon-plastic bipolar plate to obtain the positive electrode material for the zinc-bromine flow battery. A graphene / activated carbon composite system is combined with a high-conductivity network, graded holes and surface functional groups, so that the reaction kinetics bottleneck of a traditional carbon material Br2 is broken through.

The invention discloses an activated carbon forming defect online detection method and device, and belongs to the technical field of material defect detection.The method comprises the steps that technological parameters are collected in real time and preprocessed, a parameter sequence is generated, self-sensing recognition of a new technology is conducted, lagged starting of a quality control vacuum period is avoided, and once the new technology is recognized, the quality control vacuum period is started. An unknown defect pre-recognition mechanism is triggered immediately, novel anomalies which do not conform to known defects are recognized, and an unknown defect candidate set is generated; constructing a multi-stage hierarchical detection network, performing adaptive detection on the unknown defect candidate set, establishing a reference model, screening samples, updating the reference model, and forming a defect identification model adaptive to a new process, so that the influence of insufficient samples on the detection accuracy is effectively relieved; and setting three-dimensional quantitative indexes, judging a transition period, automatically switching to a full-model detection mode when the indexes meet preset requirements, and objectively evaluating the recognition capability of the detection system on new process defects and the process suitability through the quantitative indexes.

The invention discloses an activated carbon pore regulation and control method and monitoring equipment, and belongs to the technical field of spectrum analys.The method comprises the steps that on the basis of a probability prediction model, spectrum scanning frequency is dynamically adjusted, and real-time global spectrum collection is carried out; the method comprises the following steps: setting a self-adaptive threshold value, extracting time sequence slope and acceleration by a dynamic sliding window, generating a time sequence change matrix, judging an abnormal spectrum, screening and analyzing unexpected signals, realizing accurate identification of known and new unexpected signals, and reversely deducing molecular configuration parameters through a characteristic peak position interval. Calculating a matching degree difference value between the pore size and the molecular configuration, and carrying out matching analysis to ensure the suitability analysis accuracy of the pore characteristics and the pollutant molecules; according to the matching degree difference value, porosity gradient regulation and control are carried out, real-time monitoring is carried out to verify the regulation and control effect, self-evolution is achieved, and the regulation and control efficiency and precision are continuously improved.

The invention provides an activated carbon fiber capable of efficiently removing formaldehyde and a preparation method thereof, the activated carbon fiber is of a composite material fiber structure of porous TiO2 derived from activated carbon and a metal organic framework (MOF), and the preparation method of the composite material comprises pretreatment of activated carbon, preparation of a Ti-MOF precursor and preparation of TiO2 / activated carbon fiber. According to the invention, the MOF-derived porous TiO2 / activated carbon composite fiber structure is constructed, physical adsorption and photocatalytic degradation functions are cooperated, and the limitation of single adsorption capacity is broken through; the interface bonding problem of the MOF derivative and the activated carbon is solved, and high-dispersion loading and stable and firm compounding of the active components are realized; a process path capable of realizing large-scale preparation is provided, and continuous production of the composite fiber is realized through an electrostatic spinning technology.

The invention relates to the technical field of waste gas treatment, and particularly discloses a dynamic management method and system for industrial waste gas treatment, and the system comprises a region division module which is used for dividing an adsorption bed layer in adsorption equipment into a plurality of monitoring regions with similar sizes in a waste gas treatment process, by combining waste gas data at a waste gas outlet for coupling analysis, high-quality real-time waste gas concentration data can be obtained after coupling treatment on the basis of diversified data, and then the concentration of the waste gas is determined based on the data and state data of adsorption equipment in the waste gas treatment process. The real-time adsorption saturation of the adsorption equipment can be accurately analyzed, and the data reflects the adsorption saturation of the current activated carbon adsorption bed layer, so that the waste gas collection air volume can be optimized by dynamically adjusting the waste gas collection air volume through the air speed adjusting module subsequently based on the data, and the desorption of attachments is accelerated; the waste gas treatment effect is improved.

The invention discloses a method for synthesizing tetrahydrofuran from furfural in one step and a preparation method of a catalyst for the tetrahydrofuran. The catalyst is a bimetallic catalyst, bimetallic is M1 and M2, M1 is Pd, and M2 is selected from one of Pt, Rh, Ru, Ni, Cu, Co, Mn and Ce; the catalyst comprises an active component and a carrier, the bimetallic is the active component, and the carrier is selected from at least one of activated carbon, silicon dioxide, aluminum oxide, magnesium oxide, an S-1 molecular sieve, a ZSM-5 molecular sieve, a Beta molecular sieve, an MOR molecular sieve and a Y molecular sieve; based on the total weight of the catalyst, the loading capacity of M1 is 0.5-3.5%, and the loading capacity of M2 is 0.5-3.5%. The catalyst provided by the invention can be used in a reaction for preparing tetrahydrofuran through furfural hydrogenation, and can improve the conversion rate of furfural and the selectivity of tetrahydrofuran.

The present invention generally relates to a system for producing activated carbon from cow dung. The process begins with a drying and washing unit to pre-treat the raw material. Dried cow dung is then milled and sieved to a specific particle size. A second drying step prepares the sieved material for carbonization in a nitrogen atmosphere. The resulting carbonized material undergoes chemical activation using a sodium hydroxide solution. Subsequent pyrolysis in a nitrogen environment further develops the pore structure of the activated carbon. The pyrolyzed material is then washed with hydrochloric acid to remove impurities. A final drying step yields the desired activated carbon product, which is then crushed. This system provides a controlled and efficient method for converting cow dung into valuable activated carbon, offering a sustainable waste management solution and a source of high-quality material for various applications.

The invention relates to the technical field of retired ternary power battery recovery, and particularly discloses a method for preferentially extracting lithium and recovering valuable metals from a retired ternary lithium battery and application of the method. According to the method, the traditional process is broken through the preferential lithium extraction, and efficient recovery of lithium, Ni, Co and Mn is realized by utilizing'fast-medium-slow 'multi-stage cooperation of a composite reducing agent and accurate adaptation of roasting and leaching parameters, so that the method has the advantages of low cost, high efficiency, low energy consumption and the like, and is suitable for large-scale industrial production. The method is low in energy consumption and environment-friendly, and is applied to resource recycling of the retired ternary lithium battery, and the precursor can be used for reproducing a positive electrode material or used for a catalytic material.

The invention discloses activated carbon adsorption and desorption catalytic combustion equipment, and belongs to the field of waste gas treatment. The activated carbon adsorption and desorption catalytic combustion equipment comprises a spray tower, a dry filter, a catalytic combustion furnace, a heat exchange mechanism, an exhaust fan and a discharge pipe, an air inlet pipe is arranged at the air inlet end of the spray tower, and a first connecting pipe is arranged between the air outlet end of the spray tower and the air inlet end of the dry filter; the air inlet end of the air exhaust fan is provided with an air exhaust pipe, and the air exhaust end of the dry filter is provided with a second connecting pipe; the first gas inlet pipe is arranged at one end of the adsorption tower, and the first gas inlet pipe is communicated with the second connecting pipe; the catalytic efficiency of desorbed organic matters is effectively improved, meanwhile, small-particle dust is effectively prevented from being attached to the main activated carbon plate to affect the adsorption effect and the desorption effect, and waste gas is effectively prevented from being exhausted into the atmosphere to pollute the air.

The invention relates to the technical field of wastewater treatment, and provides a pretreatment device and method for wastewater containing heavy metal ions, and the pretreatment device comprises a water inlet unit, a multi-stage reaction unit, a solid-liquid separation unit, a deep adsorption unit and an intelligent control unit; the water inlet unit comprises a wastewater storage pool and a pH adjusting pool, and the pH adjusting pool is provided with a pH sensor and a dosing device; the multi-stage reaction unit consists of three rotational flow reaction tanks which are connected in series, and spiral guide plates are arranged in the tanks to enhance mixing; the solid-liquid separation unit comprises an inclined plate sedimentation tank and a centrifugal filter; a sludge return pipe is arranged at the bottom of the inclined plate sedimentation tank and extends to the reaction tank; the deep adsorption unit is filled with a modified zeolite-activated carbon composite adsorbent, and a heavy metal ion concentration online monitor is arranged at the rear end; the intelligent control unit dynamically adjusts the dosage and the reaction time based on pH and concentration data. The device has the beneficial effects that the mixing efficiency of wastewater treatment is enhanced, the pH application range of wastewater treatment is widened, and the cost is reduced.

The invention provides an activated carbon adsorption and desorption system and an activated carbon adsorption and desorption method. Performing bed layer heat storage compensation on the standard temperature in the desorption link according to the temperature fluctuation characteristic of the adsorption bed layer in the adsorption link and the environment temperature of the adsorption bed layer to obtain the heat storage compensation temperature of each desorption stage in the desorption link; performing stage desorption on the activated carbon adsorbent based on the desorption duration of each desorption stage in the desorption link and all the heat storage compensation temperatures, and extracting the desorption residual quantity of pollutants in the activated carbon adsorbent from the pollutant concentration information of a stage desorption outlet; the effective desorption rate of the activated carbon adsorbent is determined according to the desorption residual quantity and the current adsorption capacity, and the critical adsorption capacity of the activated carbon adsorbent in the next cycle is cyclically updated based on the effective desorption rate. Based on the scheme, bed layer heat storage compensation in activated carbon critical adsorption capacity updating can be achieved.

The invention relates to the technical field of organic fertilizer preparation and waste recycling, in particular to a food industrial park wastewater recycling and sludge resourceful treatment method which comprises the following steps: step 1, dynamically partitioning wastewater and cooperatively separating grease, monitoring the conductivity and turbidity of wastewater at water outlets of all workshops in real time, and dynamically dividing wastewater load grades according to monitored values; step 2, coupling biological treatment and carbon source circulation, inputting the effluent in the step 1 into an anaerobic reactor according to a real-time COD load ratio, adding a sludge glycolysis solution as a carbon source supplement, and dynamically adjusting the adding amount based on the ratio of volatile fatty acid to alkalinity; step 3, catalytic oxidation-membrane coupling advanced treatment: carrying out catalytic ozonation on aerobic effluent through sludge-based activated carbon, and adjusting the filling amount of a catalyst in a stepped manner along with characteristic parameters of organic matters in the effluent; 4, directional glycolysis of the sludge and closed-loop utilization of products. Through monitoring and dynamic adjustment, the problems of high energy consumption, low treatment efficiency, resource waste and the like in a traditional wastewater treatment method are effectively solved.

The invention belongs to the technical field of sodium ion negative electrode material preparation, and particularly relates to a double-layer carbon-coated sodium ion battery hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: firstly, dispersing activated carbon powder into a tris (hydroxymethyl) aminomethane hydrochloride buffer solution, and then adding dopamine hydrochloride to carry out self-polymerization reaction, so as to obtain activated carbon powder coated with a first layer of polydopamine; then putting the activated carbon powder into a second layer of carbon source precursor solution, and heating in a water bath to obtain double-layer carbon-coated activated carbon powder; and finally, carrying out heat treatment. The preparation method comprises the following steps: firstly, coating the surface of activated carbon with a first layer of polydopamine by an in-situ polymerization method, then promoting uniform coating of a second layer of carbon source precursor by utilizing strong adhesion of the polydopamine, and carrying out heat treatment to obtain the double-layer carbon-coated hard carbon negative electrode material. The hard carbon negative electrode material can improve the energy density of the current sodium ion battery and accelerate the industrial application of the sodium ion battery.

The invention provides a pyrolysis recovery method of a plastic packaging bag, and belongs to the technical field of plastic packaging bag recovery, the pyrolysis recovery method of the plastic packaging bag comprises the following steps: removing impurities from the waste plastic packaging bag, cleaning and drying, and controlling the moisture to be below 5%; the packaging bag is crushed into small blocks with the diameter smaller than 20 mm, so that the pyrolysis efficiency is improved; feeding the crushed plastic into a pyrolyzing furnace through a spiral feeder, adding an auxiliary pyrolyzing component, heating to 300-600 DEG C under an oxygen-free or oxygen-deficient condition, and carrying out thermal cracking; oil gas obtained after pyrolysis is condensed through a cooling system and classified, and solid residues are subjected to tempering treatment; flue gas generated after combustion is subjected to high-temperature degradation through a secondary combustion chamber and then subjected to multistage treatment through a quench tower, dust removal, alkali spraying and activated carbon adsorption, and it is ensured that the flue gas reaches the standard and is discharged; the problems that in the existing pyrolysis recycling process of the plastic packaging bags, the treatment efficiency is low, and the environment is still polluted can be solved.

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention relates to an alkaline activated carbon multi-stage synergistic potassium removal method, and belongs to the technical field of activated carbon materials. According to the method, a four-step synergistic process of water washing, acid pickling, ion exchange and nitrogen calcination is adopted, and a waste acid recycling closed-loop system is combined. The deep removal of residual potassium is realized through the synergistic effect of countercurrent water washing, pH (Potential of Hydrogen) staged regulation and control acid washing, deep potassium removal by ion exchange resin and nitrogen protection calcination, and meanwhile, the high specific surface area is maintained; the pickling waste liquid is neutralized, concentrated and crystallized to be converted into agricultural potash fertilizer, and mother liquid is recycled to form green circulation.

The invention relates to a preparation method of a normal-temperature normal-pressure efficient gas adsorption composite material. The method comprises the following steps: firstly, pretreating activated carbon to obtain surface-OH modified mesoporous activated carbon; then modifying the surface-OH modified mesoporous activated carbon with the ZIF-8 material to obtain ZIF-8 (at) OH-AC; and finally, performing surface hydrophobization modification to obtain the adsorption material. Wherein in the modification process, ZIF-8 is firmly loaded and uniformly distributed on the surface of hydroxyl-modified mesoporous activated carbon by adopting an in-situ growth technology, the interface bonding force is enhanced, the loading capacity of the activated carbon on the MOFs material is improved, and by utilizing the chemical adsorption effect of ZIF-8 Zn < 2 + > and methane and the high porosity of the mesoporous activated carbon, the MOFs material can be prepared. The adsorption capacity of the composite material to methane is greatly improved, meanwhile, the moisture resistance of the composite material is effectively improved, the composite material can still keep stable and efficient adsorption performance in a high-humidity environment, and the problem that an existing material is prone to inactivation in a humid environment is solved.

The invention relates to the technical field of medical instruments, and discloses an anesthetic waste gas purification device which comprises a confluence shell and a water collection tank, a support is arranged on the inner side of the water collection tank, and a water collection cavity is formed between the support and the water collection tank; the bottom of the confluence shell is connected with an air outlet pipe through a guide part; an activated carbon filter plate capable of floating up and down in the axial direction is mounted on the inner side of the guide part; a condensation cover is installed on the top of the confluence shell and comprises a top cover, an air inlet pipe is installed on the top cover, a bottom plate is connected to the lower portion of the top cover, and a refrigeration module is installed below the bottom plate. Waste anesthetic gas penetrates through the purification device from top to bottom to be purified, condensate formed in the condensation cover converges to the water collection tank under the action of gravity and airflow blowing, and collection is convenient; the activated carbon filter plate can float in the axial direction, pressure balance can be achieved through automatic downward movement when the up-down pressure difference is large, and the risk that the pore structure of the activated carbon filter plate is damaged is reduced.

The invention discloses a movable adsorption machine for waste gas treatment, and belongs to the technical field of waste gas treatment.The movable adsorption machine comprises an outer box body and brake wheels installed at the bottom of the outer box body, a gas inlet pipe is installed at the upper end of the outer box body, a filter plate is arranged below the gas inlet pipe, and a communicating pipe is arranged at the lower end of the filter plate; adsorption columns are inserted into the communicating pipes, the communicating pipes are arranged at the upper ends and the lower ends of the adsorption columns, the communicating pipes at the lower ends of the adsorption columns are connected with negative pressure generation equipment through drainage pipes, an exhaust pipe is installed at the upper end of the negative pressure generation equipment, and a power cam is arranged between the adsorption columns. According to the mobile adsorption machine for waste gas treatment, the filter plate can be cleaned in a manner of electrostatic dust adsorption and reverse blowing, the phenomenon that mesh holes in the filter plate are partially blocked by adopting a brush plate is prevented, meanwhile, harmful substances in waste gas can be adsorbed by arranging activated carbon particles, and the adsorption treatment effect on the waste gas is improved.

The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a leakage early warning system for water plant activated carbon pool construction. The pouring early warning module is used for determining the leakage risk grade of the concrete for construction of the activated carbon pool of the water plant according to the anti-permeability characterization value and judging a corresponding strategy according to the leakage risk grade; comprising a water level detection unit for monitoring the real-time water level of the activated carbon pool in a preset monitoring period and an infrared detection unit for obtaining an infrared image of the outer wall of the activated carbon pool; the method is used for secondarily judging whether the construction of the activated carbon pool meets the preset standard or not according to the water level change rate under the condition that the construction of the activated carbon pool does not meet the preset standard according to the wetting characterization value of the outer wall of the activated carbon pool. The construction efficiency of the water plant activated carbon pool is improved.

The invention relates to the technical field of industrial wastewater treatment, and discloses an efficient two-stage reverse osmosis petroleum coke water treatment system, which comprises pretreatment execution ends, a reverse osmosis core end, a concentration regeneration end and an intelligent control end which are commonly configured with a data feedback module. A step-by-step mechanism is established at the initial stage of wastewater treatment, quartz sand is adopted to intercept large-particle suspended solids, activated carbon is adopted to adsorb and degrade organic matters, softening resin is adopted to replace and remove scaling ions, ozone is adopted to catalyze, oxidize and decompose refractory pollutants, an oxidation-reduction potential dynamic regulation and control mechanism is innovatively introduced, and the dosage of an oxidizing agent is automatically regulated according to water quality and chemical quality; by means of the design, the blocking problem caused by high-hardness waste water is solved, the membrane is prolonged, the solution period is stably solved, the chemical cleaning frequency and agent consumption are reduced, a pollution early warning and closed response linkage mechanism is constructed, membrane damage caused by manual intervention delay is avoided, and the service life of membrane elements is prolonged and reduced.

The utility model relates to the technical field of livestock and poultry manure fermentation, in particular to a fermentation device for quickly decomposing livestock and poultry manure, which comprises a fermentation tank mounted on a bottom plate, and a pressure relief mechanism for automatically adjusting the pressure in the fermentation tank is arranged on the fermentation tank. A fermentation mechanism for mixing livestock and poultry manure to promote fermentation is arranged in the fermentation tank. The telescopic spring is impacted by high-pressure gas to extend, so that the rubber pad is pushed to slide to the position below the pressure relief hole formed in the pressure relief pipe, the pressure is discharged through the pressure relief hole, and the phenomenon that the tank body is broken due to the fact that the pressure in the fermentation tank is too high is avoided; according to the gas purification device, harmful substances, dissolved in water, in gas are purified, peculiar smell can be removed to a certain degree, the peculiar smell in the gas is adsorbed and removed again in cooperation with the activated carbon plate, and therefore the situation that the peculiar smell of the fermentation gas is dispersed in a fermentation place and pollutes the environment is avoided.

The invention discloses a boiler flue gas desulfurization and denitrification device, and relates to the technical field of boiler flue gas treatment.The boiler flue gas desulfurization and denitrification device comprises a tower body, a filler layer is fixedly installed at the top of the tower body, a tower top is fixedly installed at the top of the filler layer, a water tank is fixedly installed on the outer side of the tower body, and a circulating pump is arranged on the water tank; a spraying device is arranged on the water tank, the output end of the circulating pump is connected with the spraying device through a pipeline, a plurality of water spraying openings are formed in the tower top, and the water spraying openings are all communicated with the output end of the spraying device; wherein a stirring device for stirring the filler is arranged on the filler layer, and the flue gas is quickly dispersed, so that the primary desulfurization and denitrification effect is improved, activated carbon particles are continuously stirred, the particles are prevented from caking, full contact between the particles and the flue gas is guaranteed, the reaction time is prolonged, and the desulfurization and denitrification efficiency is improved.

The invention belongs to the technical field of activated carbon preparation, and relates to sulfur-doped activated carbon and a preparation method thereof. The method comprises the following steps: firstly, adding a cleaned and crushed biomass raw material into an aqueous solution of a sulfur-containing dopant, carrying out dipping treatment, separating, drying, and carrying out high-temperature carbonization in an oxygen-free environment to obtain a sulfur-doped carbonized material; and crushing the sulfur-doped carbonized material into particles, and activating at high temperature in a carbon dioxide atmosphere to obtain the sulfur-doped activated carbon particles. The sulfur-doped active carbon particles prepared by utilizing a sulfur in-situ doping and physical activation combined method are stable in structure, the active carbon with rich mesopore and micropore structures can be obtained by doping a small amount of sulfur, the surface hydrophobicity of the active carbon is improved, meanwhile, the adsorption sites on the surface are increased, and the adsorption performance on hydrophobic organic pollutants is remarkably improved. The method is simple in process, low in cost, environment-friendly and easy for commercialized application.

The invention relates to the technical field of flue gas purification, in particular to a nitrogen oxide and dioxin efficient synergistic removal and discharge system which comprises a pretreatment frame and an advanced treatment frame, the pretreatment frame is arranged at the upper end of the advanced treatment frame, and a removal mechanism, a transition air cylinder and an activated carbon storage cylinder are sequentially arranged in the pretreatment frame; local parts of the bottoms of the transition air cylinder and the activated carbon storage cylinder extend into the advanced treatment frame, and a reaction cylinder II is arranged in the advanced treatment frame and corresponds to the activated carbon storage cylinder up and down; the efficient synergistic removal of nitrogen oxides and dioxin is realized through the synergistic treatment of a two-stage layered structure, dynamic mixing deacidification and dynamic adsorption optimization, and meanwhile, the adaptability of equipment to complex working conditions is improved through an adjustable transmission assembly.

The invention belongs to the technical field of activated carbon preparation, and particularly discloses a preparation device and method for increasing the micropore proportion of activated carbon through segmented activation. A steam activation section and a carbon dioxide activation section are arranged in an activation furnace of the device, and a material channel penetrates through the steam activation section and the carbon dioxide activation section; and a through hole penetrating through the wall thickness is formed in the side wall of the material channel. Materials are subjected to primary activation through the steam activation section, so that more mesopores and macropores are quickly formed in the materials, and then the materials are subjected to secondary activation through the carbon dioxide activation section, so that micropores are further formed in the materials, the number and proportion of the micropores are increased, and the desulfurization performance of activated carbon is improved. According to the technical scheme, the pore structure of the activated carbon is regulated and controlled in a segmented activation mode, the micropore proportion is increased, and therefore the desulfurization performance of the activated carbon is improved, the technological process is simple, meanwhile, waste heat of flue gas obtained after incineration and purification can be recycled, energy is saved, efficiency is high, and industrial application is easy.

The present invention relates to the technical field of gas treatment, and particularly relates to a multi-stage adsorption recovery method for organic gases by means of biological nano composite activated carbon. The method comprises the following steps: preparing an activated carbon composite, i.e. nFeOOH@AC, of nano-hydroxyl iron modified corn husk and bamboo shoot skin by using an ethanol dispersion method, which composite can be used for the adsorption of organic gases; and introducing a mixed gas containing a target organic matter into a system comprising at least two biological nano composite activated carbon adsorbers, which are connected in series, at a preset flow rate Q (m3 / h), wherein each adsorber is filled with the biological nano composite activated carbon with a density ρ (kg / m3), the specific surface area thereof is S (m2 / g), and the average pore diameter is d (nm), thereby achieving multi-stage adsorption. The beneficial effects comprise: utilizing the high specific surface area and excellent adsorption performance of the biological nano composite activated carbon, and combining the multi-stage adsorption system, such that efficient recovery of organic gases can be achieved, thereby significantly improving the recovery efficiency. Compared with a traditional treatment method, this method is low in energy consumption, extra fuel is not needed, and the adsorption material can be recycled, thereby reducing resource consumption and waste generation, and conforming to the environmentally friendly development concept.

The invention relates to the technical field of gas separation and purification, in particular to a method and system for recycling hydrogen in mixed gas through pressure swing adsorption. The method comprises the following steps: performing multi-layer adsorption impurity removal on mixed gas containing 20-25% of silane, 10-15% of disilane and 60-70% of hydrogen, and cooling to 22-28 DEG C; the mixed gas subjected to primary impurity removal enters a pressure swing adsorption device, and an adsorbent in the adsorption device is modified activated carbon. The system comprises a mixed gas cylinder, a pretreatment unit, a pressure swing adsorption unit and a hydrogen collection unit which are connected in sequence. By adopting the pressure swing adsorption method, the hydrogen recovery rate is remarkably increased and can reach 93%, the purity can reach 99.2% or above, and the strict requirement of high-end industrial production for high-purity hydrogen can be met.

The invention provides chemical waste gas recovery and purification treatment equipment, and relates to the technical field of waste gas treatment.The chemical waste gas recovery and purification treatment equipment comprises a spraying tower, a spraying plate is fixed to the top of the spraying tower, a flow dividing assembly is arranged at the bottom of the spraying tower, the flow dividing assembly comprises a chassis, and the chassis is rotationally installed on the spraying tower; four groups of air cylinders are arranged at the top of the base plate at equal intervals, an upper plate is arranged at the tops of the air cylinders, a water outlet is formed in the bottom, corresponding to one group of air cylinders, of the base plate, and a notch is formed in the top, corresponding to one group of air cylinders, of the upper plate. The solution flows back into the gas cylinder, the newly entering waste gas is subjected to preliminary neutralization treatment, so that the subsequent secondary neutralization treatment effect is improved, the utilization rate of the neutralization solution is increased, and the discharged waste gas is dried through the drying assembly to ensure that the subsequent activated carbon adsorption effect is not influenced.

The invention relates to the technical field of sintering technology and environmental resources in the iron and steel industry, in particular to a method for recycling sintered waste activated carbon powder, which comprises the following steps: mixing waste activated carbon powder with a flux and iron ore concentrate to prepare small balls with different carbon contents; the method has the beneficial effects that the waste activated carbon is efficiently and fully utilized in the longitudinal sintering direction, and the purposes of reducing the consumption of sintering solid fuel, improving the sintering efficiency and improving the sintering quality are achieved. Heat required by effective mineralization of the upper portion and the edge of the sintering trolley is improved, the quality of sintered ore on the upper layer and the edge of the sintering trolley is improved, and finally the purpose of reducing production and operation cost is achieved.