260 results about "Organic gases" patented technology

The invention provides a flexible HP-ZIF-67 (at) Au surface enhanced Raman scattering substrate for multi-phase detection of volatile organic gas and pesticide residues, and a preparation method and application thereof, and belongs to the technical field of volatile organic gas and pesticide residue detection. The preparation method comprises the following steps: preparing a polystyrene microsphere template by taking polyvinylpyrrolidone, styrene and potassium persulfate as raw materials, then adding 2-methylimidazole and cobalt nitrate to obtain HP-ZIF-67 particles, dispersing the HP-ZIF-67 particles on an aluminum foil to obtain an HP-ZIF-67 substrate, and continuing to diffuse and deposit a gold nanoparticle layer to obtain the flexible HP-ZIF-67 (at) Au surface enhanced Raman scattering substrate. The flexible HP-ZIF-67 (at) Au surface enhanced Raman scattering substrate provided by the invention has the advantages of stable process, high sensitivity and multiphase detection, and a novel composite material is provided for volatile organic gas and pesticide residue detection.

The invention relates to the technical field of activated carbon materials, and discloses an activated carbon material for adsorbing organic gas and a preparation method thereof.The preparation method includes the steps that activated carbon powder, epoxidized cardanol, graphene oxide modified quaternized chitosan, bentonite and nanometer titania are added into grinding equipment to be ground, and a primary material A is obtained; and then continuously adding a water-borne epoxy resin adhesive and water, stirring and drying to obtain the active carbon material for adsorbing the organic gas. Chitosan in the silane modified chitosan structurally contains amino, hydroxyl and other polar groups, so that organic gas can be adsorbed; the graphene also has a relatively good adsorption effect on organic gas, and meanwhile, the agglomeration effect of the graphene is reduced; and siloxane and quaternary ammonium salt groups contained in the adsorbent also have a relatively good adsorption effect on organic gases. Cardanol in epoxidized cardanol contains functional groups such as benzene rings, phenolic hydroxyl groups and long-chain alkanes, and the functional groups endow the cardanol with various reaction activities and can absorb organic gas.

The invention relates to a method for continuously preparing a single-walled carbon nanotube, which comprises the following steps of: uniformly mixing organic metal and a growth promoter in proportion to form a catalyst, adding the catalyst into a dust spraying device, connecting each gas pipeline and a preheating furnace inlet, connecting an outlet of the preheating furnace with a vertical tube furnace, and sealing the whole device; firstly introducing inert gas to remove air, then preheating the furnace, and heating the vertical tube furnace; after the temperature is stable, the injection device injects a catalyst into the preheating furnace, the preheating furnace and the vertical tube furnace are kept at the constant temperature, and the single-walled carbon nanotubes continuously grow; after the catalyst is consumed, stopping gas supply, turning off a power supply, and taking a sample at room temperature. The catalyst is fully preheated before entering a vertical tube furnace, and the reaction activity of the catalyst reaches the highest; the temperature in the furnace chamber of the reactor is constant, organic gas is fully contacted with a catalyst, carrier gas and reducing gas and is uniformly heated, and continuous growth of the carbon nanotubes is facilitated; the energy consumption is low, the occupied area is small, the operation is simple, continuous production can be realized, the productivity is high, the length-diameter ratio is large, the G / D value is large, and the specific surface area is large.

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 discloses a master batch with a food fresh-keeping function. The master batch comprises the following components: 40-80 parts of PE resin; 5 to 30 parts of a nano composite antibacterial agent; 0.1 to 5 parts of a surfactant; 2-10 parts of a polyolefin elastomer; 5-25 parts of an organic gas adsorption material; 5-20 parts of a microporous modified atmosphere material; 1-25 parts of an antifogging agent; 0.1 to 10 parts of a lubricant; 0.1-5 parts of a dispersant; 0.1 to 1 part of an antioxidant; 0.1 to 3 parts of absolute ethyl alcohol; and 80 to 300 parts of ultrapure water. The master batch with the food fresh-keeping function has a broad-spectrum antibacterial effect, can reduce the rotting rate, the weight loss rate and the loss rate of fruits and vegetables in the production circulation link, adsorbs organic gas generated by respiration of the fruits and the vegetables, spontaneously adjusts the gas concentration content, and prolongs the fresh-keeping time and the shelf life of the fruits and the vegetables.

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 discloses a method for preparing tantalum carbide powder by carburization based on a double-effect synergistic effect of molten salt activation and catalytic decomposition, which comprises the following steps: mixing molten salt powder A and tantalum powder to obtain mixed powder, heating the mixed powder to 600-1200 DEG C for activating treatment to obtain activated tantalum powder, separately placing molten salt powder B and the activated tantalum powder in a heating furnace, heating the heating furnace to 100-200 DEG C, heating the heating furnace to 100-200 DEG C, and heating the heating furnace to 100-200 DEG C to obtain the tantalum carbide powder. The heating furnace is heated to enable the molten salt powder B to be converted into molten salt, then carbon source gas firstly flows through the molten salt to form active gas, the active gas makes contact with the activated tantalum powder to react, and the tantalum carbide powder is obtained. On one hand, the tantalum powder is subjected to surface activation treatment through the molten salt, and the reaction activity of the tantalum powder is improved; the molten salt medium assists in organic gas decomposition, the thermal decomposition efficiency of the organic gas is improved, the production energy consumption is effectively reduced under the cooperation of the molten salt auxiliary gas decomposition and the molten salt activation tantalum powder process, and the product purity and uniformity are improved.

The invention discloses a rotary kiln for recycling pyrolysis energy of oil-based rock debris. A jacket heating chamber is mounted on the rotary kiln, a knocking mechanism is arranged between the outer wall of the rotary kiln and the inner wall of the jacket heating chamber, a feeding hopper is arranged at a feeding port of the rotary kiln, a dust remover is arranged at the air outlet end of a discharging port of the rotary kiln and communicated with a heat exchanger, and the heat exchanger is communicated with the rotary kiln. Mixed gas composed of water vapor and low-boiling-point organic gas separated by the heat exchanger is conveyed to the jacket heating chamber through a pipeline, mineral oil condensed by the heat exchanger is conveyed to the oil storage tank, and the jacket heating chamber burns the organic gas in the mixed gas and heats the water vapor in the mixed gas to heat the rotary kiln. A gas outlet pipeline of the jacket heating chamber conveys part of high-temperature gas obtained after combustion of the mixed gas to the knocking mechanism to serve as a power source for knocking the rotary kiln. Heat generated by recycling pyrolysis is used for driving the knocking mechanism to achieve descaling of the inner wall of the rotary kiln, the situation that a large number of reaction materials adhere to the inner wall of the rotary kiln is avoided, and normal use of the rotary kiln is guaranteed.

The invention provides condensation and pre-concentration equipment for trace organic gas and a treatment method thereof, and the condensation and pre-concentration equipment comprises a water vapor removal device which is used for removing impurity gas mainly containing water in sample gas; the carbon dioxide removal device is used for removing carbon dioxide in the sample gas; the trapping trap device comprises a first trapping trap and a second trapping trap, and the second trapping trap is connected with the carbon dioxide removal device and is used for trapping the sample gas subjected to carbon dioxide removal; the temperature control device is used for controlling the temperature of the water vapor removal device and the trap device; the valve group device comprises a plurality of valves which are multi-channel switching valves and are at least used for introducing sample gas and dry gas; the carrier gas input device comprises a first path of carrier gas, a second path of carrier gas and a third path of carrier gas, the first path of carrier gas is used for driving a sample to transfer, the second path of carrier gas is used for driving sample gas to enter an analytical instrument for detection, and the third path of carrier gas is used for back-blowing carbon dioxide in the carbon dioxide device; and the analysis device is used for analyzing the sample gas.

The utility model belongs to the technical field of VOCs treatment, and particularly relates to a VOCs treatment and recovery device. A tail gas main pipe is connected with a tail gas buffer tank, the tail gas buffer tank is connected with a membrane group liquid accumulation tank through a second booster pump and a condenser, a gas outlet of the membrane group liquid accumulation tank is connected with a membrane separator through a filter, a first pressure transmitter and a first booster pump, and the membrane separator is connected with the tail gas buffer tank through an organic gas circulating pipe. The membrane separator is connected with a standby absorption tank through an exhaust pipe and a retreatment pipe, the membrane separator is connected with the atmosphere through the exhaust pipe and a qualified discharge pipe in sequence, the exhaust pipe is provided with a detection hole, the bottom of the tail gas buffer tank and the bottom of the membrane module liquid accumulation tank are connected with a recycled liquid metering tank, and the recycled liquid metering tank is connected with a reaction kettle. By arranging the retreatment pipe on the exhaust pipe and monitoring through the detection hole, when the content of the VOCs exceeds the standard, the tail gas is introduced into the standby absorption tank, and the VOCs in the tail gas are absorbed to reach the standard and then discharged, so that the safety of tail gas emission is further improved.

The utility model belongs to the field of gas pollution treatment equipment, and particularly relates to a device for treating VOC (volatile organic compound) and PM2.5 (particulate matter 2.5) through superposition oxidation, which comprises a shell provided with a gas inlet and a gas outlet, a negative electrode assembly and a positive electrode assembly which are arranged in pairs are arranged in the shell, a discharge structure is arranged on the negative electrode assembly, and a discharge structure is arranged on the positive electrode assembly. And the discharge structure is arranged towards the positive electrode assembly. According to the utility model, the negative electrode assembly discharges towards the positive electrode assembly to form an electric field and generate the electron jet flow, organic gas molecules and particulate matters in gas are bombarded into an ionic state through the electron jet flow and are subjected to oxidation reaction with oxygen in the air, and finally carbon dioxide and water are formed, so that the purpose of green pollution treatment is achieved.

The invention discloses a method for efficient photo-thermal catalytic degradation of sulfur-containing organic gas. A preparation method of a sulfur-resistant catalyst comprises the following steps: (1) salt containing sulfur-resistant active metal A and an accelerant are added into water to obtain a salt solution of the active metal A, and the active metal A is selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; (2) adding a salt solution containing an active phase metal B into the carbon dioxide nanotube, carrying out vacuum-assisted confinement, drying and reducing to obtain an active phase material for degrading the sulfur-containing organic gas in the confinement of the titanium dioxide nanotube, the active phase metal B being selected from more than one of Fe, Co, Cu, Mn, Ni, Pt and Sr; and (3) adding the active phase material of the titanium dioxide nanotube for confinement degradation of the sulfur-containing organic gas into the salt solution of the active metal A for coupling to obtain the sulfur-resistant catalyst. According to the method provided by the invention, the catalyst shows excellent catalytic performance in light and heat catalytic systems.

The invention discloses an environment-friendly automatic purification integrated treatment system for copper processing, a cleaning device is used for cleaning and filtering flue gas conveyed by a gas collecting hood, the cleaning device comprises a partition plate, a smoke outlet barrel is arranged on the partition plate, the lower end of the smoke outlet barrel is communicated with a lower cavity formed by partition of the partition plate, and the lower end of the smoke outlet barrel is communicated with a smoke outlet. Fan blades are rotationally arranged at the bottom of the cleaning box, a plurality of atomizing nozzles are arranged at the top of the smoke outlet barrel, and a demister is arranged at the top of each atomizing nozzle; the filtering device is used for filtering harmful gas in the cleaned flue gas; flue gas sequentially passes through a cleaning device used for cleaning dust particles and emulsion in the flue gas, a filtering device used for primarily filtering impurity particles in the flue gas, a combustion device used for directly combusting organic gas in the flue gas and an activated carbon adsorption device used for adsorbing and filtering harmful gas in the combusted flue gas. Final products of the flue gas are water and carbon dioxide, and the emission of the flue gas meets the emission standard.

The invention discloses a preparation method of a multiplying power type silicon-carbon material, which comprises the following steps: crushing a carbon precursor into carbon powder, mixing the carbon powder and a dispersing agent, adding the mixture into ethanol, stirring, grinding for the first time to form an emulsion, adding a coating agent into the emulsion, grinding for the second time, spraying and granulating to obtain an intermediate product, and drying to obtain the multiplying power type silicon-carbon material. Carrying out primary calcination on the intermediate product to form spherical sunken carbon powder, mixing the spherical sunken carbon powder with alkali, carrying out secondary calcination, washing and drying to obtain a carbon skeleton, putting the carbon skeleton into a fluidized bed, introducing silicon source gas into the fluidized bed, carrying out heat preservation at 400-700 DEG C for 1-6 hours, switching the silicon source gas into organic gas source gas, and carrying out heat preservation at 400-700 DEG C for 1-6 hours; keeping the temperature at 400-800 DEG C for 2-6 hours to obtain a multiplying power type silicon carbon material; the invention further discloses the multiplying power type silicon carbon material and application of the multiplying power type silicon carbon material as a negative electrode of a lithium ion battery, and the multiplying power type silicon carbon material is smooth and flat in particle surface, has circular and annular special morphology and is free of edges and corners.

The utility model belongs to the technical field of oxalate storage, and particularly relates to a harmless discharging device for volatile organic gas in a dimethyl oxalate storage tank, which comprises a storage tank and a liquid seal tank, the top end of the storage tank is connected with a discharging pipe, and a pressure transmitter for detecting air pressure in the tank is fixedly mounted on the storage tank. A regulating valve I in signal connection with the pressure transmitter is mounted on the discharge pipe, one end, far away from the storage tank, of the discharge pipe extends into the liquid seal tank and is positioned below the liquid level in the liquid seal tank, methanol is contained in the liquid seal tank, and the top end of the liquid seal tank is connected with a tail gas pipe. According to the utility model, organic matter gas in the storage tank is discharged into the liquid seal tank and is washed and dissolved by methanol, so that organic matters are prevented from being discharged into the atmosphere, zero emission of harmful substances is realized, and the device is environment-friendly.

According to the columnar granular activated carbon preparation process adopting the multifunctional belt type microwave activation furnace, activated carbon is prepared through a post-forming method, compatibility and stability of raw materials are optimized through a multi-stage heating mode, shape and size consistency of the activated carbon is ensured through granulation equipment, and the columnar granular activated carbon is prepared through a microwave radiation heating process. Under a static state without an activating agent, non-differentiated efficient activation of a semi-finished product is realized, the activation uniformity and quality uniformity of the activated carbon are ensured, and pollution-free continuous production is realized. The invention also provides biomass columnar granular active carbon which has high specific surface area, excellent adsorption performance, mechanical strength and durability after being activated by a multifunctional belt type microwave activation furnace, and has wide application prospects in the fields of air purification, solvent recovery, liquid decolorization, catalyst loading, organic gas protection, waste gas treatment, water purification industry and the like.

The utility model relates to the technical field of biomass fuel preparation, in particular to a biomass liquid fuel pyrolysis reactor which comprises a reaction box, a dust filtering screen plate is fixedly connected to the interior of a filtering box, a heat storage ceramic assembly is fixedly connected to the interior of a heat storage cylinder, a heat conduction assembly is fixedly connected to the interior of the heat storage ceramic assembly, and the heat conduction assembly is fixedly connected to the interior of the heat storage cylinder. And the back surface of the reaction box is fixedly connected with a condensation box. According to the pyrolysis reactor for the biomass liquid fuel, a biomass material is put into the pyrolysis kettle body to be heated and pyrolyzed, generated organic gas is introduced into the combustion kettle to be fully combusted, high-temperature mixed water vapor and part of smoke substances are obtained, smoke particles are filtered and collected through the dust filtering screen plate, then the remaining high-temperature water vapor is introduced into the heat storage barrel, and the heat storage barrel is used for storing heat; the heat storage ceramic assembly and the heat conduction assembly are used for absorbing and storing water vapor heat and then conducting heat exchange and utilization, meanwhile, the water vapor obtained after heat exchange is introduced into the condensation box to be condensed and collected, and therefore the recycling rate of biomass pyrolysis reaction products is increased.

The utility model relates to the technical field of organic gas filtration treatment, in particular to equipment for filtering organic gas in pyromellitic dianhydride tail gas, which comprises an adsorption box, an insertion hole is arranged at the top of the adsorption box, an adsorption box is arranged in the insertion hole, activated carbon is filled in the adsorption box, and the adsorption box is connected with the adsorption box. Adsorption holes are uniformly formed in the surface of the adsorption box, a top plate is arranged on the upper side of the adsorption box, a slot is formed in the bottom of the top plate, bolts are arranged on the left side and the right side of the top surface of the top plate, a first pull handle is mounted in the middle of the top of the top plate, and an air inlet pipe is arranged on the front surface of the adsorption box; a connecting pipe is arranged on the back face of the adsorption box, organic gas can be subjected to adsorption treatment and filtration through the arranged adsorption box and activated carbon, the organic gas can be subjected to combustion treatment through the arranged combustion box and flame projector, the organic gas is treated in the two modes of adsorption and combustion, and therefore the organic gas treatment and filtration effect can be better.

The invention relates to the technical field of air conditioning devices, and discloses a textile equipment air conditioning device which comprises a shell, an air inlet pipe for supplying air to textile equipment is arranged at the bottom of the shell, and a driving system is installed on the upper portion of the shell. An indexing frame capable of periodically rotating by 90 degrees and an inner gear ring capable of periodically rotating at variable speed and intermittently idling are connected to the driving system, and four air conditioning systems are arranged on the indexing frame. The air conditioning system comprises a main shaft, the main shaft is driven by an inner gear ring, and a multi-shaft composite motion module driven by the main shaft is arranged on the indexing frame. Through the electrostatic adsorption section, the activated carbon composite section, the antibacterial nano coating section and the porous ceramic fiber section which are arranged on the composite filter cloth, different pollutants such as dust, organic gas, microorganisms and high-temperature oil mist are adsorbed in a targeted manner, the filtering efficiency is improved, and the types of the pollutants are matched in real time in combination with an intelligent position adjusting system; the core problems that traditional equipment is single in function and low in purification efficiency are solved.

This utility model discloses a dustproof sealing structure for an infrared volatile organic gas (VOC) imager lens, relating to the technical field of dustproof sealing for infrared VOC imager lenses. This dustproof sealing structure includes a dust cover, a support rod on one side of the dust cover, a cleaning mechanism on one side of the dust cover, a dustproof mechanism on the top of the dust cover, a dust cover on the top of the dust cover, a connecting hole at the bottom of the dust cover, a magnetic block fixedly connected inside the connecting hole, a sealing groove at the bottom of the dust cover, and a magnetic strip fixedly connected to the bottom of the dust cover. This dustproof sealing structure for an infrared VOC imager lens, by providing a cleaning mechanism on one side of the dust cover for easy cleaning of the glass slide, and by providing a dustproof mechanism on the top of the dust cover for easy dust sealing of the top of the dust cover.

The present invention discloses an integrated drying and curing device for solar cell silicon wafers, comprising a loading conveyor line, a loading platform, a loading chamber, at least two linearly arranged parallel ovens, a unloading platform, an unloading conveyor line and a carrier reflow mechanism; the loading conveyor line corresponds to the feeding end of the loading platform, and the discharging end of the loading platform corresponds to the feeding end of the loading chamber; the feeding end of the unloading platform corresponds to the discharging end of the last discharging end of the box, and the discharging end of the unloading platform corresponds to the unloading conveyor line. The invention utilizes automated loading and unloading and online transportation and realizes uniform and rapid drying and curing through simultaneous heating of both sides of the silicon wafer lying flat, and can realize the reflow and reuse of the carrier; volatile organic gases can be uniformly and effectively extracted by vacuum extraction and air intake without a large amount of blowing, which effectively reduces the energy consumption of blowing; and linear loading and unloading has the advantages of high production capacity and small footprint.

The utility model discloses an electroplating oven for preventing a copper surface area from being polluted and oxidized during tin electroplating, which comprises an oven body, placing components arranged on two sides of the inner wall of the oven body, a temperature control component arranged on the inner wall of the oven body, a processing component connected below the oven body, and a cleaning component arranged on one side of the processing component. According to the drying oven, the humidity in the drying oven can be effectively reduced, the risk of copper surface oxidation can be reduced, pollutants in air can be continuously removed, cyclic utilization of gas in the drying oven is achieved, the energy utilization efficiency is improved, meanwhile, the cleaning assembly is arranged on the treatment assembly, the air humidity can be reduced, dust, impurity particles and organic gas can be adsorbed, and the environment is protected. The environment in the oven is kept clean, the oxidation risk of a copper surface is reduced, the filter element plate can be regularly wiped and cleaned, the situation that the filter efficiency of the filter screen is reduced due to pollutant blockage is prevented, the workload and frequency of manual cleaning are reduced, and the maintenance cost and the failure rate are reduced.

The invention provides a regeneration method of active coke, regeneration is performed in an internal heat rotary regeneration furnace, the regeneration furnace is horizontally inclined downwards by 1.5-3 degrees, and a furnace chamber is sequentially divided into a feeding section, a pyrolysis section, an activation section and a discharging section; an internal heating type countercurrent regeneration method is adopted, and low-boiling-point organic matter is volatilized together with water vapor along with temperature rise in the drying process; during pyrolysis, most of the organic matters are pyrolyzed; during activation, the residual organic matters are pyrolyzed at a higher temperature, and the active coke recovers original pores, so that the active coke is regenerated; the pyrolysis flue gas is subjected to sufficient heat exchange with the materials; the volatilized organic gas can be fully combusted at the first time and can provide heat for regeneration, so that the organic gas is combusted to prevent deflagration and explosion; an activating agent water vapor does not need to be supplemented, and the volatilized water vapor is enough to generate an activation reaction; the safety coefficient is high, the service life of the equipment is long, the heat efficiency is high, and the operation is simple and convenient.

The utility model discloses an electronic-grade nitrogen purification device, which relates to the technical field of nitrogen purification and comprises a placing plate, a filter tank arranged at the top of the placing plate, a gas inlet formed in the circumferential surface of the filter tank, a breather pipe fixedly connected to the top of the filter tank, and a molecular sieve drying box fixedly connected to one end of the breather pipe. The bottom of the molecular sieve drying box is fixedly connected to the top of the placing plate, the side face of the molecular sieve drying box is fixedly connected with an air outlet pipe, the other end of the air outlet pipe is fixedly connected with a storage tank, the bottom of the storage tank is fixedly connected to the top of the placing plate, and a stirring and filtering device is arranged in the filtering tank. According to the utility model, the rotating force of the shell clamp is matched with the rotating shaft, the activated carbon strip and other components, so that the effect of driving the activated carbon strip to rotate when the driving strip rotates is realized, and the effective filtration of organic gas and odor of nitrogen in the filtering tank is realized.

The utility model relates to coating waste gas treatment equipment which comprises a waste gas inlet, a condenser, a dry filter, an adsorption box device with a low-temperature catalytic combustion desorption device and a main exhaust fan from head to tail, the condenser is connected and matched with a heat dissipation device; the adsorption box device is provided with a high-concentration organic gas exhaust passage and a hot air inlet passage, the hot air inlet passage is communicated with an air outlet passage of the low-temperature catalytic combustion desorption device, and the high-concentration organic gas exhaust passage is communicated with an air inlet of the low-temperature catalytic combustion desorption device. The device has the beneficial effects that the molecular sieve is desorbed without a nitrogen heating system, and self-circulating hot air is adopted, so that the whole device is relatively small in size, and organic waste gas is finally decomposed and combusted thoroughly through layer-by-layer filtration and layer-by-layer concentration.

The invention discloses a preparation device of impregnated activated carbon capable of preventing acid-base organic gas, and relates to the technical field of preparation of impregnated activated carbon. The impregnated activated carbon preparation device for preventing the acid-base organic gas comprises a frame body, a frame groove is formed in the frame body, a liquid outlet is formed in the middle of the lower end of the frame groove, a liquid outlet pipe is fixed to the inner wall of the liquid outlet, a control valve is arranged in the middle of the liquid outlet pipe, and supporting legs are fixed to the four corners of the lower end of the frame body. Through grooves are formed in the two sides of the frame body, and a fixing frame is fixed to the middle of the upper side of the frame body. According to the impregnated activated carbon preparation device capable of preventing the acid-base organic gas, the threaded rod is driven by the driving motor to rotate, on one hand, the effect of integrated operation is achieved, the operation efficiency of the preparation device is effectively improved, on the other hand, the effect of sufficient stirring is achieved, and the actual use effect of the preparation device is remarkably improved; and on the other hand, the real-time cleaning effect is achieved, and the use convenience of the preparation device is remarkably improved.

The present application relates to the field of waste gas treatment, and discloses a VOCs treatment system with desorption function and a use method, two groups of molecular sieve adsorption equipment containing macroporous resins are connected with alkali washing equipment, after the waste gas is pretreated by the alkali washing equipment, the waste gas enters one group of the molecular sieve adsorption equipment, VOCs and other organic gases in the waste gas are adsorbed by the macroporous resin material of the molecular sieve adsorption equipment, and the gas after adsorption treatment reaches the standard is discharged at high altitude through an exhaust tower; when the macroporous resin of one group of the molecular sieve adsorption equipment is saturated, the waste gas discharged from the alkali washing equipment is introduced into the other group of the molecular sieve adsorption equipment to adsorb organic gases, the molecular sieve adsorption equipment saturated with adsorption is connected with a drying equipment and a cooling equipment, water vapor is introduced to carry out desorption regeneration, the macroporous resin after desorption is dried by hot air and then cooled, and then enters the adsorption process again, and the circulation is carried out in sequence, so that the emission waste gas reaches the standard.

The utility model belongs to the technical field of waste gas treatment of printing and dyeing equipment, particularly relates to waste gas treatment equipment of a printing and dyeing setting machine, and provides the following scheme aiming at the problems of complicated operation, low dust purification efficiency and low safety of the existing wet-type electrostatic waste gas treatment equipment. The system comprises a gas inlet link, a combustion link, a filtering link and an energy recovery link, can realize comprehensive and efficient utilization of energy while treating dust and organic gas in waste gas of the setting machine, can prevent dust and oil smoke from being accumulated and attached to the inner walls of pipelines and equipment in the combustion process, and can ensure long-time reliable and stable operation of the system.

The present invention provides a method for sequential pyrolysis and carbon deposition to produce a composite carbonaceous product, the method comprising: a pyrolysis process step, which comprises pyrolyzing a pyrolyzable organic feed in a first reaction zone at a pyrolysis temperature in the presence of a non-oxidizing gas to produce hot char and pyrolysis gas, wherein the pyrolysis gas and the non-oxidizing gas are combined to form a gas mixture; discharging the gas mixture from the first reaction zone to a combustion zone, and combusting at least a portion of the pyrolysis gas in the combustion zone, wherein the heat generated by the combustion of the pyrolysis gas is transferred from the combustion zone to the first reaction zone to provide at least a portion of the pyrolysis heat; and a decomposition process step, which comprises directly contacting a hydrocarbon-rich organic gas with the hot char after the hot char is produced in the pyrolysis process step, wherein the hydrocarbon-rich organic gas is catalytically decomposed on the hot char at a decomposition temperature higher than the pyrolysis temperature, thereby producing a gaseous decomposition product and a composite carbonaceous material, the gaseous decomposition product comprising hydrogen, and the composite carbonaceous material comprising char having carbon deposits thereon.

The present invention provides a sulfur-oxygen functional group adsorption material, its preparation method and application, belonging to the technical field of environmental protection new energy materials. It includes the following steps: (1) placing ultrafine polypropylene fibers in concentrated sulfuric acid and heating for sulfonation treatment to obtain sulfonated fibers; (2) mixing the sulfonated fibers with an activator and performing one-step carbonization activation to obtain the sulfur-oxygen functional group adsorption material. The sulfur-oxygen functional group adsorption material obtained by the preparation method of the present invention has a specific surface area of 1865-2264 m 2 / g, has a rich microporous-mesoporous structure, can serve as a transport channel, reduces the transport resistance of guest molecules, and improves the mass transfer efficiency. The adsorption capacity for the volatile organic gas methanol is as high as 18.49 mmol / g, and the adsorption capacity for CO2 is as high as 4.54 mmol / g, showing extremely high adsorption capacity.