30results about How to "Reduction of hazardous substances" patented technology

The invention discloses a non-smoked, non-fried, non-carbonado and non-salt-boiled meat product processing method, which comprises the following steps of: curing salted fresh meat for 15 to 45 minutes through hot air under the temperature of 90 to 100 DEG C, spraying a flavor intensifier on the surface of the cured meat product, and then increasing the temperature to 120 to 130 DEG C to be maintained for 20 to 40 minutes, wherein the fresh meat is poultry meat, livestock meat or fish meat. By utilizing the flavor intensifier based on a Maillard reaction oriented control technology, the meat product has unique color and flavor. According to the method, harmful substances such as benzo[alpha]pyrene and heterocyclic amine in the meat product can be obviously reduced.

The invention discloses a potato cake and a preparing method thereof. The potato cake is prepared from the following raw materials in parts by weight: 20-30 parts of potatoes, 4-6 parts of soy isolate protein, 8-10 parts of water, 3-4 parts of thick pulp powder, 2-4 parts of whole milk powder, 3-5 parts of breadcrumbs, 0.5-2 parts of salt, 1-2.5 parts of sugar and 0.2-0.6 part of aginomoto. The potato cake has the beneficial effects that the potato cake is firstly steamed to be completely cooked and is subsequently fried in oil, then the potato cake can be unique in taste, is both soft and crispy, delicious and tasty, moreover, harmful substances generated when the potato is fried in oil are reduced, the nutrient of a product is enriched, and the potato cake can be healthy to eat.

The invention discloses a physical vapor deposition technology applied to a communication system assembly for replacing water electroplating. The physical vapor deposition technology comprises the following technological treatment steps of 1, oil dirt removal of the surface of a workpiece, 2, ultrasonic pure water washing, 3, drying, 4, covering, 5, plasma cleaning activation and 6, physical vapor deposition coating. Compared with traditional high-pollution water electroplating, the technology has few generated harmful substances and is basically free of pollution and environment-friendly, standardization and automation are easy to achieve in the technological process, quality is stable, and the film layer performance is improved.

The invention discloses a low-temperature pickled and marinated beef and mutton composition and a pickling and marinating method thereof and relates to a marinating technology capable of resisting fatoxidation, improving tenderness, reducing juice loss of marinated meat and prolonging the expiration date under the low-temperature sterilization condition. Meat pieces are firstly pickled and then marinated with three pickling and marinating material compositions including a raw meat pickling injection liquid, brine perfume and a decontamination and color protection liquid in four steps of pickling, rolling, marinating and contamination and color protection. During pickling, papain, xanthan gum, locust bean gum, flaxseed gum, compound phosphate and rosemary extract are injected into meat pieces in a liquid injection manner, rolling dispersion and perfume water marinating are performed, finally, a fat oxidization resisting agent and antibacterial edible acid are added, quick tenderization, water retention as well as pickling and marinating are realized, high-pressure and high-temperature sterilization is not carried out, and the taste and flavor can be protected. The method for firstly pickling and then marinating beef and mutton at the low temperature has the benefits of high fat oxidation resistance, good water retaining property, high tenderness, antibacterial effect and capability of reducing fat oxidation.

The invention provides a porous-starch-containing water-based paint for cigarette wrapping paper, aiming to the improve the condition that at present, the function of wrapping paper is only limited to binding up tobacco shreds and has no direct effect on reducing harms and improving the taste of the cigarettes. The water-based paint comprises the following raw materials in parts by weight: 100 parts of water, 8-30 parts of porous starch, 5-15 parts of carboxymethylcellulose and 3-12 parts of guar gum. The water-based paint is prepared from the following steps of: heating water up to 60-100 DEG C; and sufficiently stirring the mixture of the porous starch, the carboxymethylcellulose and the guar gum with the water to prepare a crosslinking mixed liquor so as to obtain the water-based paint for the cigarette wrapping paper. The water-based paint for the cigarette wrapping paper can be better adhered on the wrapping paper so as to reduce harmful substances in cigarette smoke; because the water is used as the solvent, volatile organic solvent residues do not exist after coating; and the water-based paint has the advantages of energy saving, safety without pollution and safer suction.

The invention discloses an oil-free environment-friendly reclaimed rubber and a preparation method thereof. The reclaimed rubber comprises the following components in parts by weight: 100 parts of load-carrying tire surface rubber powder, 3 to 5 parts of alkyl amino carboxylate type activator, 0.5 to 1.5 parts of silane coupling agent, 5 to 100 parts of water, 3 to 5 parts of liquid polyisoprene rubber, and 1 to 3 parts of phenol or amine type antioxidant. The preparation method comprises the following steps: adding load-carrying tire surface rubber powder, alkyl amino carboxylate type activator, silane coupling agent, and water into a high temperature dynamic reactor; carrying out regeneration under preset conditions, after regeneration, cooling, reducing pressure, discharging products; drying the discharged rubber powder; then adding liquid polyisoprene rubber and phenol or amine type antioxidant, evenly mixing, allowing the mixture to stand still for a while, adding the rubber powder into an open mill, processing the rubber powder for a while, and batching out the rubber powder to obtain high-strength oil-free environment-friendly reclaimed rubber. The provided preparation method radically reduces the odor of reclaimed rubber. The obtained reclaimed rubber and products of reclaimed rubber are nearly odorless, and only have the smell of rubber hydrocarbon.

The invention belongs to the technical field of agricultural ecological breeding, and particularly relates to a rice-duck comprehensive planting and breeding method. The rice-duck comprehensive planting and breeding method comprises the steps that when the leaf age of rice seedlings reaches 3.5-4.0 leaves, the rice seedlings are transplanted into a rice field, a wide-row narrow-plant planting manner is adopted for rice transplanting, and composite viable bacteria microspheres are applied after transplanting is completed; and go-to-field duck breeding is carried out: feed containing the composite viable bacteria microspheres is adopted for supplementary feeding before ducks are put into the field, the ducks are put into the rice field after feeding is completed, excrement of the ducks is discharged into the rice field, and the problems that in the prior art, in a duck-rice co-cropping manner, the prevention and treatment safety of rice blast is poor, and multiple times of pesticide application are needed can be solved.

The invention discloses a novel sewage treatment system, which belongs to the technical field of sewage treatment and aims to provide a sewage treatment system which has the advantages of reducing bacteria in water quality and improving water quality. Pool, improved A2 / O reaction pool, secondary settling pool, filter cloth filter, ultraviolet disinfection pool, artificial wetland pool, a high-density clarification pool is set between the secondary settling pool and filter cloth filter pool, and the ultraviolet disinfection pool There is a lifting pump room between the artificial wetland pool and the artificial wetland pool. The invention has the advantage of being able to reduce the bacteria in the water quality through the optimization of the sewage system, thereby improving the water quality effect of the sewage effluent.

The invention discloses an air purification robot capable of inhibiting harmful gas emission, and belongs to the technical field of air purification equipment. The air purification robot comprises a fixed seat, the top of the fixed seat is fixedly connected with a box body, the bottom of an inner cavity of the box body is provided with a filtering mechanism, one side of the inner cavity of the boxbody is provided with a first spraying mechanism, a second spraying mechanism is arranged at the top of the inner cavity of the box body, the other side of the inner cavity of the box body communicates with an exhaust pipe, one side of the box body communicates with an exhaust fan through an air inlet pipe, and the exhaust fan is fixedly installed at the top of the fixed seat. According to the device, after gas is lifted, neutralizing liquid medicine in a medicine box is atomized and then moves downwards to drive second drainage plates at the bottom to rotate around sleeves to stir harmful air to be mixed, so that harmful substances in the harmful gas can be effectively neutralized through top and side spraying, then the harmful substances in the gas can be remarkably reduced, the external environment pollution is reduced, and the use requirements are met.

The invention discloses an intelligent paint spraying exhaust gas purification device which comprises an air-drawing mechanism, a filter mechanism and a wireless remote-control unit. A motor is mounted in the air-drawing mechanism, a radiator is mounted at one end of the motor, a driving rod is arranged at the upper end of the motor, a low-efficient filter section is mounted in a filter chamber, a high-efficient filter section is mounted on one side of the low-efficient filter section, an air outlet chamber is mounted at one end of the filter mechanism, an air outlet pipe is arranged in the air outlet chamber, a PLC (programmable logic controller) electronic control unit is mounted at the lower end of the filter mechanism, a negative-ion generator is mounted at the lower end of the air outlet chamber, a voltage transformation adjuster is mounted on one side of the negative-ion generator, a wireless signal transmitter is mounted at the upper end of the wireless remote-control unit, an operation and control display screen is mounted in the wireless remote-control unit, and operation and control buttons are mounted below the operation and control display screen. The intelligent paint spraying exhaust gas purification device is intelligently operated by one key, manpower and material resources are saved, and the purification efficiency of paint spraying exhaust gas is greatly improved.

The invention relates to a chemical fertilizer production apparatus, and specifically relates to a two-stage rotary screen with protection shield and firm support bracket; the two-stage rotary screen with protection shield and firm support bracket comprises a bracket, a motor, a shaft coupler, a screen shaft, a screen body, a support bracket, and a protection shield; the motor is arranged on the bracket; two ends of the screen shaft are connected with the bracket via bearings; the screen body is connected with the screen shaft via the support bracket; the motor is connected with the screen shaft via the shaft coupler; the screen body comprises a first screen mesh portion and a second screen mesh portion; the mesh holes of the first screen mesh portion are smaller than the mesh holes of the second screen mesh portion; one side of the protection shield is fixedly connected with the bracket; the other side is detachably connected with the bracket; the support bracket is arranged along the radial direction of the screen shaft in every 60 degrees; and the support frame is fixed connected with the screen shaft by means of welding. The provided two-stage rotary screen with protection shield and firm support bracket reinforces the firmness of the screen body, increases the work quality and efficiency of the rotary screen.

The present invention discloses a preparation method of potato-soybean sauce and relates to the technical field of sauce production. The preparation method includes the following steps: impurities of soybeans are removed, the soybeans without the impurities are washed, the washed soybeans are cooked thoroughly, then the cooked soybeans are soaked with a mixture of 10 parts by weight of baijiu, 50 parts by weight of white vinegar, 20 parts by weight of starch and 500-1,000 parts by weight of water at a soaking temperature of 30-50 DEG C for 8-20 hours; potatoes are cooked thoroughly and the cooked potatoes are peeled, the peeled potatoes are mashed into potato paste, then the treated soybeans are placed into the potato paste to be fully stirred, and a layer of the potato paste is attached on the surfaces of the soybeans; the soybeans with a layer of the potato paste attached on the surfaces are poured onto a summer sleeping mat and the soybeans on the summer sleeping mat are mixed with dry flour evenly, the mixture is spread into a mixture layer with a thickness of 3-5 cm, and the mixture layer is fermented for 3-5 days to obtain a sauce blank; and the sauce blank is put into a clean jar, seasonings and cooled boiling water are added, and even stirring is conducted and the mixture is sun-dried into a sauce. The sauce is rich in taste, and the sauce flavor can be well preserved, and the potato-soybean sauce has a long preservation time and a flavor of medicinal fragrance, is conductive to the consumption of the public, and has certain inhibition and treatment functions for patients with hypertension.

The invention discloses an activated carbon adsorption process in the technical field of exhaust gas adsorption. The process comprises the following steps: 1) exhaust gas impurity removal treatment, 2) exhaust gas pre-cooling, 3) exhaust gas condensation, 4) exhaust gas drying and 5) exhaust gas deep adsorption. The exhaust gas is pre-cooled in a pre-cooling chamber, which is favorable for the next exhaust gas condensation treatment; after the exhaust gas is condensed, the internal temperature of a condensing chamber is reduced to being the dew point of organic matter or lower in the exhaust gas, so that the organic matter is condensed into a liquid state to separate out and separate from the gas; at the moment, a small amount of harmful substances still exists in the exhaust gas, the amount of harmful substances in the exhaust gas can be further reduced through the deep adsorption of an activated carbon adsorption box in the activated carbon adsorption chamber, and the activated carbon adsorption box in the adsorption chamber is stacked in a way shaped like a vertical Chinese character tian, so that the adsorption surface of the activated carbon adsorption chamber is perpendicularto the incoming exhaust gas, and the adsorption area in the activated carbon adsorption chamber is maximized, thereby improving the adsorbability of the activated carbon adsorption chamber.

The invention discloses agricultural and forestry waste damp-proof biomass fuel. The agricultural and forestry waste damp-proof biomass fuel is prepared from the following raw materials in parts by weight: 10 to 60 parts of carbon powder, 5 to 25 parts of potassium chloride, 8 to 24 parts of banana stalk powder, 4 to 26 parts of magnesium chloride, 5 to 25 parts of manganese slag, 7 to 21 parts ofattapulgite, 6 to 28 parts of pearlite, 10 to 60 parts of pig manure, 10 to 50 parts of corn stalk, 10 to 60 parts of cotton stalk, 5 to 25 parts of rose flower stalk, 3 to 23 parts of paraffin wax,6 to 28 parts of industrial ethanol, 6 to 20 parts of oily sludge, 4 to 28 parts of a sulfur fixation agent and 3 to 15 parts of polypropylene. The agricultural and forestry waste damp-proof biomass fuel has the advantages of good damp-proof effect, high combustion efficiency, good environment-friendly performance and the like.

The invention relates to a purification device, in particular to an environment-friendly water mist spraying flue gas efficient purification device. The invention provides an environment-friendly water mist spraying flue gas efficient purification device which can purify flue gas for multiple times and discharge the flue gas after the flue gas reaches a qualified index. The invention relates to an environment-friendly water mist spraying flue gas efficient purification device, which comprises: a bottom frame, one side of the top of which is provided with a gas inlet pipe capable of collecting other substances; the connecting pipe capable of receiving flue gas with the outside is mounted on one side of the gas inlet pipe in a threaded manner. The flue gas conveying device has the beneficial effects that a flue gas receiving pipeline is connected into the connecting pipe by people, the flue gas receiving pipeline can be fixed by rotating the connecting pipe, fan blades are driven to rotate by the output shaft of the motor, and the flue gas can be conveyed by the rotation of the fan blades, so that the flue gas conveying effect can be realized.

The invention relates to a dialysis concentrated solution distribution system. The dialysis concentrated solution distribution system comprises a dialysis concentrated solution automatic preparation device (1), a high-temperature disinfection device (2) and a zero-pressure supply device (3), wherein the dialysis concentrated solution automatic preparation device (1) is connected with the high-temperature disinfection device (2) through a pipeline; and the zero-pressure supply device (3) is arranged on the pipeline and is provided with a connector connected with a liquid inlet of a dialysis machine. By adopting the dialysis concentrated solution distribution system disclosed by the invention, automatic preparation work of a dialysis concentrated solution can be realized and the labor intensity of workers is extremely alleviated; the breeding opportunity of microorganisms is reduced through high-temperature heating; stable liquid supply is maintained through the zero-pressure supply device; the dialysis concentrated solution in the system can be immediately used after the solution is prepared at the same day; and the storage time of the dialysis concentrated solution is shortened andthe effectiveness of the dialysis concentrated solution is maintained.

The invention provides fireproof PVC leather for a outdoor tent and a preparing method thereof and relates to the technical field of artificial leather. The PVC leather is characterized by being prepared from, by weight, 90-110 parts of PVC resin, 70-80 parts of fillers, 30-40 parts of plasticizer, 4-5 parts of stabilizers, 1-2 parts of lubricants and 3-4 parts of fire retardant; the fire retardant is prepared from, by weight, 3-4 parts of prchloro cyclopentane decane, 1-2 parts of chlorendic acid, 1-2 parts of melamine cyanurate and 3-4 parts of potassium auric chloride. The fireproof PVC leather for the outdoor tent has good fire retardant effect, less harmful substances are generated at a high temperature or by burning, and the PVC leather has good environmental protection property.

The invention relates to the technical field of sauce production, in particular to a braised chicken sauce and a preparation method thereof.The braised chicken sauce is prepared from, by weight, 100-200 parts of clean chicken, 80-100 parts of Peking scallions, 10-20 parts of gingers, 5-10 parts of white sugar, 15-20 parts of soy sauce, 15-20 parts of rice wine, 3-4 parts of refined salt, 1-2 parts of monosodium glutamate, 700-800 parts of soup stock, 10-20 parts of green starch, 15-20 parts of sesame oil and 50-100 parts of lard oil.The preparation method includes: chopping the clean chicken, segmenting the scallions, and slicing the gingers; frying the chopped chicken in the lard oil at about 200 DEG C, and taking out when the color of the chopped chicken changes; keeping 20g of the oil in a wok, adding the white sugar, performing stir-frying to make the white sugar purplish red, adding the soup stock, the rice wine, the segmented scallions and the ginger slices, and boiling; adding the fried chopped chicken, boiling, skimming, adding the soy sauce and the refined salt, braising over soft fire until the chicken is cooked thoroughly, adding the monosodium glutamate, concentrating the soup, thickening, sprinkling the sesame oil, and canning.The braised chicken sauce has the advantages of taste richness, high tastiness, medicinal flavor, long shelf time and benefits for people to eat and has a certain inhibition and treatment effect on hypertension.

The invention discloses a purification type melting device for metal. The purification type melting device comprises a furnace body, a carrier column, a gas guide and flow separation mechanism, an exhausting pipe and an adsorption mechanism. The adsorption mechanism is additionally arranged, an air-permeable layer is fitted to the inner part of a porous box and activated carbon is filled into theair-permeable layer, so that flue gas is firstly adsorbed by the activated carbon when being exhausted and harmful substances of the flue gas are extremely reduced, and furthermore, the environmentalprotection performance is improved.

The invention relates to the technical field of beef processing, in particular to a processing method of smoked beef. The method comprises the following steps: establishing a smokehouse, processing beef, preparing sauce, selecting and processing smoking materials, curing beef and smoking beef. Beef smoked through the method is good in appearance and quality, small in the amount of hazardous substance, small in harm on human body after being eaten and simple in operation in smoking process, and cannot cause fire, so as to be very safe.

The invention discloses a method for manufacturing iron by using Brown gas and an apparatus for manufacturing iron by using Brown gas. Pig iron is produced by introducing fine iron ore and a carbon source into a kiln and supplying a flame generated by burning Brown gas into the kiln. Iron is produced by introducing pig iron into a melting furnace and supplying a flame generated by burning Brown gas into the melting furnace. Since flames generated by burning Brown gas are used in a process for manufacturing iron, a high-temperature heat source can be supplied without using coke. Furthermore, since the generation of harmful substances is significantly reduced in the process of manufacturing iron, iron can be manufactured in an environmentally friendly manner.

The invention discloses a non-smoked, non-fried, non-carbonado and non-salt-boiled meat product processing method, which comprises the following steps of: curing salted fresh meat for 15 to 45 minutes through hot air under the temperature of 90 to 100 DEG C, spraying a flavor intensifier on the surface of the cured meat product, and then increasing the temperature to 120 to 130 DEG C to be maintained for 20 to 40 minutes, wherein the fresh meat is poultry meat, livestock meat or fish meat. By utilizing the flavor intensifier based on a Maillard reaction oriented control technology, the meat product has unique color and flavor. According to the method, harmful substances such as benzo[alpha]pyrene and heterocyclic amine in the meat product can be obviously reduced.

A novel waste plastic granulation waste gas treatment device can greatly improve the automation degree of equipment, realize automatic opening or closing of a spray system or a fire damper and realizesufficient treatment of waste gas, so that the purification degree of waste gas is greatly improved, and the safe work state of the whole equipment can be ensured. The device comprises a spray tower,wherein the spray tower is sequentially communicated with a filter, an explosion-proof fan and a gas outlet chamber through gas delivery pipelines; the fire damper is arranged at a gas inlet of the spray tower; a temperature sensor is mounted in the spray tower; one side of the spray tower is communicated with a cyclone dust collector through a gas delivery pipeline; a negative-ion generator, a filter net and an electrostatic dust collector are sequentially mounted in the filter; an explosion venting sheet is mounted on one side of the gas outlet chamber and mounted on a piston rod of an aircylinder; a control box is arranged on one side of the cyclone dust collector; the control box is electrically connected with the fire damper, the temperature sensor, the spray tower, the cyclone dustcollector, the negative-ion generator and the electrostatic dust collector.

The invention relates to the field of fruit and vegetable food processing, in particular to a preparation method of fried abelmoschus esculentus with low oil content. The preparation method comprises the following steps of: performing fixation on cleaned abelmoschus esculentus in hot water, performing centrifugal dewatering after cooling, putting the dewatered abelmoschus esculentus into a compound impregnation liquid for vacuum impregnation, performing low-temperature freezing after draining, after a period of time, putting the frozen abelmoschus esculentus into a vacuum freeze dryer for pre-drying treatment, finally, performing low-temperature vacuum frying under a certain condition, and centrifugally deoiling to obtain an instant crisp abelmoschus esculentus food. After freezing, vacuum freeze drying is adopted to dry the abelmoschus esculentus in advance, so that the vacuum frying time can be effectively shortened, harmful substances generated by frying can be reduced, and the prepared product is more fragrant and crisp in taste and lower in oil content compared with a product which is not subjected to freeze-drying frying.

The invention relates to a printer harmful substance treatment device which comprises a shell, anadsorption assembly and an ultraviolet assembly ; a paper inlet and a paper outlet are formed in the shell, a paper receiving plate used for guiding paper from the paper inlet to the paper outlet is installed in the shell, a through hole is formed in the paper receiving plate, and the through hole penetrates through the side wall of the paper receiving plate; the adsorption assembly is used for adsorbing VOC, the adsorption assembly is installed on the inner wall of the shell, the adsorption assembly is relatively located below the paper receiving plate, and an air inlet fan is installed in an air inlet in the adsorption assembly; and the ultraviolet assembly is used for treating ozone gas, is mounted on the inner wall of the shell and is relatively positioned above the paper receiving plate. The treatment device provided by the invention can be clamped at the top of the printer to clean and adsorb various harmful substances discharged in the printing process, so that the harmful substances in an office are greatly reduced.

The invention discloses a cigarette filter stick additive with a function of reducing ammonia release amount in cigarette mainstream smoke, and a preparation method and application thereof. The cigarette filter stick additive comprises an active component consisting of lauryl sodium sulfate and rosin, and a particle carrier for loading the active component. When the cigarette filter stick additive is added into cigarette filter stick tows, the content of ammonia in mainstream smoke can be effectively reduced by 10-28.5%, and the content of tar is hardly reduced; and the preparation method of the cigarette filter stick additive is simple, low in cost and convenient for industrial mass production.

The invention discloses tobacco flakes added with grape vine. The tobacco flakes are produced by, by weight, 40-60 parts of tobacco powder, 10-15 parts of tobacco stem, 10-15 parts of grape vine, 3-5 parts of grape skin, 3-5 parts of white radish, 0.5-1 part of octenyl succinic anhydride, 0.05-0.1 part of xanthan gum, 5-10 parts of calcium carbonate, 2-4 parts of butyl titanate, 0.5-1 parts of ethylenediamine tetraacetic acid disodium, 0.05-0.1 part of monoglyceride citrate and 0.1-0.2 part of hippophae rhamnoides oil. The tobacco flakes have the advantages that the tobacco flakes are good in tensile strength, folding strength and water resistance, less prone to crushing and deterioration, capable of lowering smoke irritation and improving smoking quality, fragrant, soft, fine and smooth and moist in taste and good in processing performance, quality stability and sensory quality, and the application value of the tobacco flakes is increased.

The invention is suitable for the field of medical instruments, and provides a device for moxibustion and a treatment method for moxa cone combustion products, the device for moxibustion comprises a moxibustion head for moxibustion, a moxibustion body and an exhaust channel, and the moxibustion body further comprises a combustion assembly arranged at the end, away from the exhaust channel, in a first shell; a control assembly arranged at the end, close to the exhaust channel, in the first shell; a filtering assembly arranged between the control assembly and the exhaust channel, wherein the moxa cone combustion products are discharged out of the first shell through the exhaust channel; after moxa cones are fixed and combusted through the combustion assembly, moxa heat is transmitted to the moxibustion head to conduct moxibustion on the human body, the temperature in the combustion assembly is displayed and controlled through the control assembly, products obtained after moxa cone combustion are filtered through the filtering assembly, and smoke-free, odorless and dust-free gas is obtained and exhausted through the exhaust channel. Scalds to the human body are prevented, and damage to air and the human body caused by products generated after the moxa cone is burnt is reduced.

The invention discloses a coating slurry formula capable of effectively removing formaldehyde to achieve the purpose of purifying air. The coating slurry formula comprises the following components in parts by weight: 100 parts of pure acrylate soft emulsion, 35-45 parts of pure acrylate hard emulsion, 16-24 parts of a foam stabilizer, 24-36 parts of titanium dioxide slurry, 4-12 parts of modified zeolite, 0.5-1 part of a thickening agent and 0.5-1 part of a dispersing agent. The preparation method of the coating slurry for removing formaldehyde and purifying air comprises the following steps: S1, weighing; S2, fully mixing titanium dioxide, modified zeolite and a formaldehyde scavenger, and uniformly dispersing; S3, uniformly dispersing pure acrylate emulsion; S4, putting the titanium dioxide slurry obtained in S2 into the emulsion obtained in S3, stirring and dispersing uniformly; and S5, adding a thickening agent to adjust the viscosity of the slurry.

The invention belongs to the field of fire fighting, particularly relates to a building fire fighting dense smoke rapid exhaust device, and provides the following scheme aiming at the problems that in the using process of an existing exhaust device, blockage prevention of a filter plate is not convenient, then the exhaust efficiency is reduced, dense smoke is not convenient to fully treat, and consequently air is polluted by harmful substances in the dense smoke. The device comprises a shell, a mounting opening is formed in one side of the shell, an exhaust pipe is fixedly mounted in the mounting opening through welding, a water tank is fixedly mounted at the bottom of the shell through welding, two symmetrical supporting plates are fixedly mounted at the top of the shell through welding, and the same solar chip is fixedly mounted at the tops of the two supporting plates through bolts; in the using process, blocking prevention can be conveniently conducted on the filter plate, then the exhaust efficiency can be guaranteed, dense smoke can be fully treated conveniently, and therefore harmful substances in the dense smoke are prevented from polluting air, the structure is simple, and use is convenient.