53results about How to "Improve formaldehyde removal efficiency" patented technology

The invention discloses an active carbon adsorbent with good effects of removing formaldehyde and removing odors. The active carbon adsorbent is characterized by being prepared from the following raw materials in parts by weight: 100-150 parts of sludge, 13-17 parts of corn straws, 15-24 parts of peanut shells, 10-15 parts of manganese ore powder, 30-50 parts of zinc oxide, 13-16 parts of magnesium silicate, 5-8 parts of silicon dioxide, 3-5 parts of polyvinyl alcohol, 3-5 parts of polyacrylamide, 12-15 parts of tea leaf dreg powder, 8-12 parts of calcium oxide, 6-8 parts of carbon fibers and proper amount of distilled water. According to the active carbon adsorbent, the tea leaf dreg powder, calcium oxide and the carbon fibers are added so that the properties of sterilizing, odor removal, acid and alkali corrosion resistance, high strength and high adsorption capability of sludge active carbon are extremely promoted; the active carbon adsorbent has high formaldehyde removing efficiency, can be used for deodorizing and removing peculiar smell, and is good in moisture absorption; by using the active carbon adsorbent, the air quality is good; and the active carbon adsorbent is good for body health of people and is worthy of popularization.

The invention relates to the field of environment protection, in particular to an indoor formaldehyde removing spray which comprises, by mass, 5-10% of 2-, 0.5-2% of nano titanium dioxide, 1-3% of nano silicon dioxide, 0.2-3% of plant extract, 0.01-0.1% of dispersant and the balance of water. Formaldehyde removing efficiency of the formaldehyde removing spray obtained by combining the plant extract with substances like nano titanium dioxide, the plant extract and nano silicon dioxide through interaction between bioenzyme contained in the plant extract and the substances according to a certainproportion is improved, and the formaldehyde removing spray has high formaldehyde removing efficiency under ultraviolet irradiation and without visible light irradiation; the formaldehyde removing spray is long-time effective in formaldehyde removal, environment-friendly in formaldehyde removal and free of secondary pollution in the process of removal and can remove various harmful substances likebenzene and ammonia which are common in home decoration.

The invention relates to a pure plant composite formaldehyde and odor cleaning agent which is characterized by comprising the following components in parts by weight: 10-20 parts of a basic plant extract X, 4-6 parts of a surfactant, 1-2 parts of citric acid, 1-2 parts of a yucca smalliana extract, 2-4 parts of tea polyphenol, 2-4 parts of a clove extract, 2-4 parts of eucalyptus leaf oil, 1-3 parts of olive oil, 1-3 parts of camphorated oil and 50-70 parts of deionized water. The components are sufficiently stirred and mixed and placed in a sealed container for 20-40 hours at an ambient temperature of 20-35 DEG C, after the components are completely dissolved, adsorbed and precipitated, high-purity supernate is extracted, and then the pure plant composite formaldehyde and odor cleaning agent is prepared. The cleaning agent is wide in application range, remarkable in odor removal effect, convenient to use, good in purification effect, safe and environmentally friendly, free of toxicityand free of secondary pollution and meanwhile has the effects of sterilization, deodorization, and the like.

The invention provides a method for removing formaldehyde from an artificial plate. The method comprises the following steps: (1) putting the artificial plate in an enclosed space, injecting nitrogen gas, spraying a solution A till the humidity reaches 30-60%, heating to 60-70 DEG C, and carrying out heat preservation for 2-4 h; (2) drying till the humidity reaches 10-15% and carrying out heat preservation for 1-2 h; (3) carrying out vacuum pumping, cooling to 30 DEG C, and carrying out heat preservation for 2-5 h; and (4) spraying a solution B onto the artificial plate, heating to 40-50 DEG C, carrying out heat preservation for 0.5-2 h, cooling to 25-30 DEG C, and drying. The method provided by the invention has the advantages that the removing effect is good; the cost is low; the process is simple; and formaldehyde in linear resin can be removed.

The invention discloses a preparation method of an efficient formaldehyde-removing spraying agent. The method comprises the following steps of (1) weighing zinc nitrate, titanium tetrachloride, ferric chloride and ethyl alcohol, adding the titanium tetrachloride, the zinc nitrate and the ferric chloride into the ethyl alcohol, adjusting PH to 2 to 3 by dropwise adding acetic acid, and stirring to fully dissolve the materials; (2) adding an obtained mixed solution into a supercritical reaction still, controlling certain temperature and pressure, keeping the pressure for a certain time, and after decompression, obtaining zinc oxide, titanium oxide and ferric oxide ternary nanometer composite powder; and (3) mixing the powder, a dispersant and deionized water, adding an obtained mixture into a grinder, and controlling appropriate grinding conditions, wherein finally prepared dispersion liquid is the efficient formaldehyde-removing spraying agent disclosed by the invention. The efficient formaldehyde-removing spraying agent prepared by the method provided by the invention is efficient in removing formaldehyde; the formaldehyde-removing spraying agent is effective for a long time in removing the formaldehyde, and in a formaldehyde-removing process, environment friendliness is realized, and toxic and harmful substances are not generated.

The invention relates to a photocatalyst formaldehyde removing spraying agent which is characterized by comprising, by mass, 1%-5% of nano-titanium dioxide, 0.5%-5% of titanium nanophosphate, 0.5%-5% of nano-silica, 0.5%-3% of of nanometer ore powder, 0.1%-0.5% of silk protein, 0.01%-0.1% of dispersant and balance of water to accumulate to one hundred percentage. The agent enables the nano-titanium dioxide to react with nanometer ore powder, silk protein, titanium nanophosphate and the like. The formaldehyde removing spraying agent created by this formula witnesses a higher efficiency in the formaldehyde removal function. The agent has the advantages of removing the indoor formaldehyde thoroughly under natural conditions, and removing various frequent harmful substances such as benzene and amine.

The invention discloses an air filtering material with porous particles. The air filtering material consists of an upper non-woven fabric layer and a lower non-woven fabric layer, as well as a porous particle layer clamped between the upper non-woven fabric layer and the lower non-woven fabric layer, wherein the porous particle layer at least comprises 5 wt% or more of porous particles containing an -R-CONHNH2 structure and has the pore volume of 0.4-1.5 cm<3>/g. The air filtering material with the porous particles has the characteristics of high formaldehyde removal efficiency, low probability of secondary stinking and longer service life and can be applied to such filtering fields as automobiles, household purifiers and clean rooms.

The invention provides a filter screen, a preparation method thereof and an air conditioner indoor unit and an air purifier with the filter screen. The filter screen comprises formaldehyde removal filter cloth and a frame used for fixing the formaldehyde removal filter cloth, wherein the formaldehyde removal filter cloth comprises polymer fibers and formaldehyde removal particles loaded on the polymer fibers, and the formaldehyde removal particles are supported on the polymer fibers by a melt-blown jet during preparation of the polymer fibers. Therefore, the formaldehyde removal filter cloth has the advantages of simple and efficient preparation method and low cost; the formaldehyde removal function is achieved, the formaldehyde removal particles loaded on the formaldehyde removal filter cloth are not prone to falling off, and dust pollution can be avoided; the formaldehyde removal efficiency is high; the wind resistance is low; and the filter screen has excellent flexibility, can be conveniently made into filters with various shapes, and is suitable for various forms of air treatment equipment, such as air conditioner indoor units and air purifiers.

The invention discloses a formaldehyde remover based on plant extract and a preparation method of the formaldehyde remover. The preparation method comprises the steps that leaves of chlorophytum comosum, aloe, epipremnum aureum, sansevieria trifasciata, commelina communis, hedera nepalensis and agave americana are ground, the ground leaves are put in a soak solution for soaking, and an extracting solution M is obtained after filtering is performed; the extracting solution M, sodium chlorite, urea, borneol, glycerol and ethyl alcohol are mixed to obtain the formaldehyde remover based on the plant extract. The problems that ordinary formaldehyde removers are low in removal efficiency, and some products may also introduce new contaminants while removing formaldehyde are solved.

The invention provides a formaldehyde adsorbent, which comprises the following components in parts by weight: 100 parts of activated carbon, 10-30 parts of nano hollow spheres and 10-30 parts of a formaldehyde remover. According to the technical scheme, the nano hollow spheres and the formaldehyde scavenger are mixed into the activated carbon, the formaldehyde adsorption burden of the activated carbon is relieved in a physical adsorption and chemical degradation mode, so that the problems that the activated carbon is limited in adsorption capacity and prone to saturation are effectively solved, and therefore the formaldehyde removal efficiency of the adsorbent can be improved and better formaldehyde treatment effect is achieved.

The invention relates to a paste composition for removing formaldehyde and a preparation method thereof and relates to the field of daily articles. The paste composition for removing formaldehyde comprises a paste base body and carbon powder. The carbon powder is dispersed on the surface, in contact with air, of the base body. The paste composition is prepared from the raw materials in percentageby mass: a formaldehyde component, an oil phase component, sodium oxide, a water phase additive and the balance water. The formaldehyde component is prepared from the following components in percentage by mass: 0.7-3.0% of titanium dioxide, 4.7-16.9% of diatomite, 1.1-5.1% of cactus stem extract, 1.1-5.1% of Fargesia dracocephala extract and 0.5-5.0% of carbon powder. The paste composition can remove formaldehyde effectively and is safe to use, and does not pollute the environment or does not have bad smells and the like. The preparation method of the paste composition is simple and controllable to operate and can reach batch production, and the prepared paste composition for removing formaldehyde is high in stability.

The invention discloses a formaldehyde remover based on a plant extract and a preparation method of the formaldehyde remover. The preparation method comprises the following steps: pulverizing leaves of chlorophytum comosum, aloe, epipremnum aureum, sansevieria trifasciata prain, commelina communis, ivy and agave Americana, soaking the pulverized leaves in a soak solution, and performing filtration to obtain an extract M; mixing the extract M, formamide and ammonium carbonate to obtain a mixed solution N; and mixing the mixed solution N, blumea oil, eucalyptus oil, artemisia annua oil, glycerol and ethanol to obtain the formaldehyde remover based on the plant extract. The problems that a common formaldehyde remover is relatively low in removal efficiency and some products introduce new pollutants while removing formaldehyde are solved.

The invention discloses a preparation method of a filter core for removing formaldehyde in air, particularly including the following steps: S1, mixing a silane coupling agent, acidified honeycomb active carbon powder and ethanol to obtain a mixture A; S2, filtering the mixture A and sintering and then grinding the filtered material to obtain a mixture B; S3, successively adding zeolite powder, graphene and K2CO3 to the mixture B to obtain a mixture C; S4, successively adding sodium silicate and MnO2, and uniformly mixing the components to obtain a mixture; S5, granulating and sintering the mixture and cooling the sintered mixture to room temperature. The preparation method is simple in operation. The filter core is good in filtering effect and long in service life, has high formaldehyde efficiency and is stable in property.

The invention discloses a filter material for removing formaldehyde and a preparation method thereof and belongs to the technical field of degradation of formaldehyde. The filter material is composedof powder and liquid; the powder is composed of the following components by weight percent: 20%-30% of kaolin, 25-35% of sepiolite, 13%-20% of attapulgite, 20%-25% of kieselguhr, 0.5%-2% of aluminum oxide powder, 0.1%-1% of metal foil powder, 1%-5% of titanium dioxide powder and 0.2%-2% of copper sulfate powder; the liquid is prepared from the following components by weight percent: 16%-25% of dispersion medium, 18%-35% of wear-resisting medium and 45%-65% of water. The preparation method comprises the following steps: mixing the powder and the liquid at mass ratio of 1:0.45, and then successively passing by a pelletizer, a cylinder drier machine and a basin type drier machine under working state, forming grains by the powder and the liquid, and reducing the water content of the grains tobelow 1%, thereby increasing the efficiency of degradation of formaldehyde and achieving the removal rate to 93.1%-97.6%.

The invention belongs to the technical field of formaldehyde scavengers and in particular relates to a compound protein formaldehyde scavenger as well as a preparation method and application of the compound protein formaldehyde scavenger. The compound protein formaldehyde scavenger comprises the following raw materials: 10-20% of plant proteins, 0.2-1.0% of acidic proteinase, 10-20% of animal proteins, 0.2-1.0% of alkaline protease, 0.2-1.0% of oxidant, 0.2-1.0% of decolorizing agent, 0.2-2.0% of penetrating agent, 5-15% of humectant and 40-70% of water. The compound protein formaldehyde scavenger contains a great amount of amino acid derivatives, biological enzymes and the like, the amino acid derivatives react with formaldehyde, the compound protein formaldehyde scavenger is good in chemical stability, nontoxic, tasteless and nonvolatile and incapable of generating secondary pollution due to certain antibacterial property, and the biological enzymes and the like adsorb formaldehyde to play a clearing role; and the compound protein formaldehyde scavenger is relatively low in raw material cost, simple and convenient in preparation method, wide in application range, green, environment-friendly and higher in formaldehyde removal efficiency due to the combination of the plant proteins and the animal proteins.

The invention discloses indoor formaldehyde removing equipment. The equipment comprises a shell; a first containing cavity, a second containing cavity and a third containing cavity are formed in the shell; an air inlet fan is fixedly arranged on a side wall of the first containing cavity; the inner side of a transmission channel is fixedly provided with a first activated carbon plate; one side ofthe air inlet fan is fixedly connected with a transmission channel; a filtering cylinder net is arranged inside the second containing cavity; a movable plate is arranged on the bottom wall of the third containing cavity; and a second activated carbon plate is arranged on a side wall of the third containing cavity. According to the indoor formaldehyde removing equipment, air is purified for multiple times, so that formaldehyde in the air is removed, and air purification capability is high. The filtering cylinder net is arranged, so that the contact area between a ferric chloride solution and air is increased, and formaldehyde removal efficiency is improved. In the equipment, a placement groove and the movable plate both can be pulled out by manpower, and then exchange is convenient; sealingperformance of the whole shell is good, so that overflow of air is avoided, and harm of ultraviolet rays to human bodies is avoided.

The invention provides a gold nanoparticle/iron-doped tungsten oxide room-temperature formaldehyde removal catalyst as well as a preparation method and application thereof. The preparation method specifically comprises the following steps: dispersing small-size gold nanoparticles with a plasmon effect and ferric chloride into a tungsten chloride precursor ethanol solution; and preparing the gold nanoparticle/iron-doped tungsten oxide room-temperature formaldehyde removal catalyst in one step through a high-temperature and high-pressure reaction. The hole concentration and the concentration ofactive sites on the surface of the catalyst are increased by doping transition metal ions, electron and hole separation is improved through the gold nanoparticles with the plasmon effect, the catalytic performance of the gold nanoparticles/iron-doped tungsten oxide on formaldehyde is greatly improved, and meanwhile, the preparation method has the characteristics of being simple, low in cost and the like.

The invention discloses a preparation method, a product and an application of a weak light photocatalyst composite formaldehyde removal spray. An efficient weak light photocatalyst, a weak light photocatalyst and a bio-enzyme composite formaldehyde removal spray are prepared by a liquid phase, doping, surface modification and composite method, the modified nano zinc oxide particle is less than 20 nanometers, the dispersion liquid strength D90 is less than 100 nanometers, and the dispersity of the system is greatly improved; the solid content of the photocatalyst is 1%, so that the additive amount is reduced; in the dispersion system, the nano zinc oxide particles are suspended in the solution in a monodisperse form; and the biological enzyme and the 'capture degradation agent' have the effects of adsorbing, capturing, locking and continuously decomposing harmful gas. The used raw materials are high in chemical stability, non-toxic, tasteless and non-volatile, have certain antibacterial property, and cannot cause secondary pollution. The raw material cost is relatively low, the preparation method is simple and convenient, and formaldehyde pollutants in a room and indoor air can be effectively removed, so that the indoor air is purified.

The embodiment of the invention relates to the technical field of environmental protection equipment, and in particular, relates to a device for quickly removing formaldehyde by using activated carbon and bio-enzyme, wherein the device comprises a box body; the box body comprises a heating box, a spraying box and an adsorption box which are connected in sequence, and a heating mechanism for adjusting indoor temperature is arranged in the heating box; a spraying mechanism used for spraying bio-enzyme liquid into a room is arranged in the spraying box, an adsorption mechanism used for adsorbing formaldehyde gas is arranged in the adsorption box, and an opening is formed in the top of the adsorption box; and the adsorption mechanism comprises a supporting frame which is arranged in the adsorption box and corresponds to the opening, a tray which is arranged on the supporting frame and is used for bearing activated carbon, and a lifting driving mechanism which is arranged in the adsorption box and is used for driving the supporting frame to move in the vertical direction. The device provided by the embodiment of the invention has the beneficial effects that the heating mechanism, the spraying mechanism and the adsorption mechanism cooperate with one another to adjust the indoor temperature, so that the indoor temperature reaches a numerical value beneficial to formaldehyde volatilization, formaldehyde removal is more facilitated, and the formaldehyde removal efficiency is improved.

The invention discloses a formaldehyde scavenger composed of pure natural plant extracts and a preparation method. The formaldehyde scavenger is composed of the following raw materials in parts by weight: 10-20 parts of chlorophytum comosum extracting solution, 10-20 parts of aloe extracting solution, 5-15 parts of maguey extracting solution, 20-30 parts of sansevieria trifasciata extracting solution, 5-10 parts of Yeguangsu (a substance capable of increasing photosensitivity), 5-10 parts of penetrant and 5-10 parts of deionized water. The preparation method comprises the following steps: 1, pretreating raw materials; 2, conducting decocting and extracting; 3, conducting fermenting: putting the extracting solution prepared in the step 2 into a fermentation tank, and carrying out sealed fermentation for 3-6 days; 4, conducting distillation: carrying out distillation treatment on the fermented extracting solution in the step 3, and taking the distilled extracting solution as a final extracting solution finished product; and step 5, obtaining a finished product: mixing the plant extracting solution finished product obtained in the step 4, adding Yeguangsu, a penetrant and deionized water into the mixed solution, conducting uniform stirring again, and conducting bottling and sealing after uniform stirring. Compared with the prior art, the formaldehyde scavenger has the advantages that the formaldehyde removal effect is relatively good, and meanwhile, secondary pollution is not generated.

The invention provides a fresh air system, further provides a central air conditioner, and further provides a control system and method of the fresh air system. The fresh air system includes an air supply system and an air exhaust system, an inlet of an air inlet duct of the air supply system is provided with a first valve, an electric flame nozzle is arranged in an air flow channel between a fanand an air supply duct or arranged in the air supply duct, and the included angle between the spraying direction of the electric flame nozzle and the air flow direction at a nozzle body of the electric flame nozzle is less than or equal to 90 degrees; and an outlet of the air exhaust duct communicates with the air inlet duct and is provided with a second valve which can be opened and closed. Afterexternal circulation is adjusted into internal circulation, formaldehyde, benzene and the like in the air are oxidized, and bacteria, viruses and the like are further killed in large quantities, so that in addition to the heating function, the fresh air system further integrates the functions such as degradation of the formaldehyde, the benzene and the like and sterilization and disinfection, andthe efficiency of degradation of the formaldehyde is greatly improved by more than one time compared with that of conventional catalytic oxidation. In addition, the central air conditioner further has similar functions.