26 results about "Volatile organic compound" patented technology

The invention relates to an ultraviolet-curable water-based colored paint composition which comprises water-based oligomer containing at least one unsaturated double bond, a water-based medium, a photoinitiator, an optional water-based thermoplastic resin and pigments. The water-based paint composition provided by the invention can be used for obtaining a high-performance coating with abundant colors in a one-time construction mode. Compared with the traditional two-layer or three-layer application mode, the invention enhances the production efficiency, reduces the energy dissipation, lowers the preparation cost, and has the advantages of less waste generation, low content of volatile organic compounds, and low environmental pollution.

There is provided a method for reducing the content of at least one water soluble volatile organic compound in a gas. The method comprises contacting the gas with an aqueous acidic oxidizing composition comprising H₂O₂ and a metal catalyst, and submitting the at least one water soluble volatile organic compound and the aqueous acidic oxidizing composition to an UV radiation.

Provided herein are pharmaceutically acceptable sodium nitrite and pharmaceutical compositions thereof. Also provided herein are methods for determining the total non-volatile organic carbon in a sodium nitrite-containing sample. Further provided herein are methods for producing pharmaceutically acceptable sodium nitrite. Still further provided herein are methods of treatment comprising the administration of pharmaceutically acceptable sodium nitrite.

The invention relates to the field of organic high-molecular compounds. In order to solve the problem of deficiency in long residual action and environment friendliness in the existing oil-based fluorine-containing low-surface-energy anti-doodling paint, the invention provides a water-based anti-doodling paint and a preparation method thereof. The preparation method comprises the following steps: adding a pigment, a filler and a dispersing agent into a toning cylinder, mixing, adding into a grinder, and grinding until the fineness is less than 20 mu m to obtain a color paste; and adding deionized water, the color paste, a fluorine-silicon-modified polyurethane core-shell emulsion, a preservative and a mildew preventive into a dispersion cylinder, mixing, sequentially adding a film forming assistant, a defoaming agent a thickener, mixing, and discharging to obtain the water-based anti-doodling paint. The film formed by the paint has the characteristics of excellent weather resistance, excellent ultraviolet resistance, excellent wear resistance, low surface energy, excellent pollution resistance, excellent doodling resistance, low VOC (volatile organic compound) emission, environment friendliness and no toxicity.

A characterization method for the solubility of ionic liquid is applied under atmospheric pressure for testing the function among ionic liquid and gas/gas molecules of volatile organic solvent, which is characterized by comprising: using an object ionic liquid as the sensitive film coat material of a resonator induction zone of a mass sensitive piezoelectric crystal detector; coating an ionic liquid film on the surface of the resonator induction zone; detecting the frequency change of the detector before and after acting with researched gas molecules to represent the function between the researched ionic liquid and the gas. The ionic liquid characterization method can obtain the solubility of ionic liquid in gas/volatile organics, and thermodynamic parameters as enthalpy, entropy, free energy change and the like in dissolution; and can research the function approach between ionic liquid and gas molecules. The measurement method is simple, fast and reliable, which can accelerate the development and application of ionic liquid.

The invention provides an ionic liquid dehumidifying method and an ionic liquid dehumidifying system for regulating gas humidity. The ionic liquid dehumidifying method comprises the following steps: enabling gas with higher humidity to sufficiently contact with a gas dehumidifying agent barren liquor, thus at least enabling moisture in the gas to be absorbed by the gas dehumidifying agent barren liquor to obtain a gas with lower humidity and a gas dehumidifying agent rich liquor; the gas dehumidifying agent barren liquor contains ionic liquor at least capable of absorbing water. Preferably, ionic liquid is adopted as the gas dehumidifying agent barren liquor. Preferably, the ionic liquid can also absorb volatile organic compounds. Water in the gas can be efficiently and fast removed by adopting the ionic liquid as a dehumidifying agent, the needed equipment is simple, and the system can stably and reliably run, and is safe and environment-friendly. The ionic liquid dehumidifying method and system are especially applicable to manufacturing shops needing to control air humidity, such as lithium battery, medicament manufacturing shops, and dried warehouses; and also, the ionic liquid dehumidifying method and system can also be applied to dewatering and purification technology of natural gas, associated gas and the like.

The invention provides a treatment system of smoke organic waste gas produced in circuit board disassembly. The treatment system of the smoke organic waste gas produced in the circuit board disassembly comprises a lime storage tank, a dry method lime spray tower, a pulsed bag-type dust remover, an activated carbon adsorption tower, a first fan and a second fan, wherein pulsed control ash removal equipment is installed on the upper portion of the pulsed bag-type dust remover; multiple nozzles communicated with an inner cavity of the dry method lime spray tower are arranged in the middle of an enclosure bulkhead of the dry method lime spray tower, the nozzles are connected with an exhaust opening of the first fan through pipelines, a discharge opening in the bottom of the lime storage tank is connected to the pipeline between the nozzles and the exhaust opening of the first fan through a gate valve and a pipeline, a waste gas inlet is formed in the lower portion of the enclosure bulkhead of the dry method lime spray tower, the bottom of the dry method lime spray tower is provided with an ash hopper for collecting waste materials, and the top of the dry method lime spray tower is provided with a spray tower gas outlet. By means of the treatment system of the smoke organic waste gas produced in the circuit board disassembly, the treatment efficiency of the smoke dust treatment system is effectively improved, and the treatment cost is reduced. Meanwhile, by means of the adsorption of activated carbon on volatile organic matter and off-flavors, the total purification efficiency of the organic waste gas treatment system is improved.

The invention relates to a preparation method of a non-volatile organic vehicular interior decoration material, and belongs to the technical field of preparation of polymeric materials. The preparation method comprises the following steps: with a self-assembly auxiliary agent B01 as a modifier, one of polypropylene and ABS (acrylonitrile butadiene styrene) as a base material, and synthetic porous calcium silicate powder as an adsorbent, mixing and granulating mixed raw materials by using continuous mixing equipment, and compounding to prepare the vehicular interior decoration material, wherein the raw materials comprise 3-10 parts of synthetic porous calcium silicate powder, 2-5 parts of the self-assembly auxiliary agent B01 and 100 parts of resin base material. The preparation method is simple; the prepared vehicular interior decoration material is detected under a 110 DEG C test condition according to the national standard 'GB/ T27630-2011', and the detection result shows that the vehicular interior decoration material is free of volatile organic compound emission and can be used for preparing a variety of environment-friendly interior decorations for passenger cars.

The invention discloses a composite manganese oxide catalyst for synchronously removing VOCs (Volatile Organic Compounds) and NOx in medium and low temperature flue gas as well as a preparation method and application of the composite manganese oxide catalyst. The method comprises the following steps: (1) adding an active metal source containing at least one element of Fe, Cu, Ce and Ni into deionized water, and uniformly stirring to obtain a precursor solution; (2) rapidly adding potassium permanganate into the precursor solution, stirring until the potassium permanganate is completely dissolved, transferring the obtained solution into a reaction kettle, and reacting under the conditions of certain temperature and self-generated pressure; and (3) washing the obtained precipitate with deionized water, and drying to finally obtain the composite manganese oxide catalyst for synchronously removing VOCs and NOx in medium and low temperature flue gas. The preparation method is simple, no additional additive or template agent is needed, the cost is low, and the obtained catalyst shows excellent synchronous removal performance of VOCs and NOx under the medium-low temperature flue gas condition.

The invention discloses a comprehensive air purification device, and relates to the field of industrial machinery. The comprehensive air purification device comprises a machine case, a pipeline, a filter and a draught fan, wherein the draught fan and the filter are arranged above the machine case; one end of the pipeline is connected with the machine case, and the other end of the pipeline is connected with the filter; the draught fan is arranged behind the filter; the junction of the pipeline and the machine case is provided with a photocatalyst purification layer; an electrostatic precipitator is additionally arranged between the filter and the draught fan; when in use, pollution gas firstly passes through the electrostatic precipitator to remove partial dust and large-particle suspended matters in the gas, then small-particle matters in the gas can be filtered out by the filter, and finally volatile organic compounds, oxynitrides and oxysulfides in the air can be treated through the photocatalyst purification layer, and harmful gases, bacteria, viruses and the like can be effectively improved, so as to quickly achieve the purpose of purifying the air.

The invention provides an organic waste gas photo-catalytic oxidation device and belongs to the field of organic waste gas treatment equipment. The device comprises a shell and a microwave generator,wherein a gas inlet and a gas outlet are formed in the shell; the microwave generator is used for forming a microwave electromagnetic field inside the shell; catalyst net plates are arranged on both the gas inlet and the gas outlet of the shell; and an ultraviolet lamp tube and a photocatalyst plate are arranged inside the shell. With the combination of three techniques of microwaves, ultravioletlight and photocatalysts, VOC (Volatile Organic Compound) molecules can be efficiently catalyzed and oxidized, a hydroxyl photo-catalytic oxidation effect achieved after the photocatalyst is radiatedwith ultraviolet light is better than a conventional ultraviolet light photolysis effect, the VOC treatment efficiency is improved by twice or greater, and the service life is effectively prolonged by5 times.

The invention discloses a waterborne quick-drying anticorrosive primer for a high-speed rail train body. The waterborne quick-drying anticorrosive primer is prepared from the following raw materials in parts by weight: 5 to 15 parts of waterborne methacrylic acid epoxy resin, 5 to 15 parts of waterborne acrylic resin, 3 to 5 parts of chitosan, 6 to 20 parts of anticorrosive pigment, 15 to 25 parts of talcum powder, 0.1 to 0.5 part of cationic FM emulsifier, 0.1 to 0.5 part of sodium polycarboxylic acid dispersant, 1 to 2 parts of sodium nitrite, 0.1 to 0.5 part of waterborne acrylic dryer, 0.1 to 0.5 part of pH (potential of hydrogen) value adjuster, and 20 to 40 parts of deionized water. The waterborne quick-drying anticorrosive primer has the advantages that the emission amount of VOC (volatile organic compound) is low, the drying speed is high, the anticorrosive and antirust properties are good, the mechanical property is high, the acid-resistant, alkaline-resistant and salt mist-resistant properties are realized, the anti-impact property is good, and the like; the waterborne quick-drying anticorrosive primer can be applied to the long-term protection of multiple types of products requiring high-quality coating property.

The invention discloses an organic waste gas treatment system. The system comprises a spray device and a reduced pressure distillation device, the spray device comprises three spray towers which are connected in sequence, a gas inlet tube is mounted at the gas inlet end of the spray towers, the gas discharge end of the spray towers is connected with a gas discharge tube, the gas discharge tube isprovided with a gas discharge fan, the liquid discharge ends of the spray towers are connected with a liquid storage box, every spray tower includes a spray tube with a spray nozzle, the spray tubes are sequentially connected with the liquid inlet tubes, every liquid inlet tube is provided with a liquid feeding pump, the liquid discharge end of the liquid storage box is connected with a liquid suction tube, and the liquid suction tube is provided with a liquid suction pump; the reduced pressure distillation device includes a distillation kettle, the steam outlet of the distillation kettle is sequentially connected with a first condensing tube and a recovery tank, the recovery tank is connected with a vacuum generator, and a condensation fan is arranged at a corresponding position of the first condensing tube; and the liquid discharge end of the liquid suction tube is connected with the feeding end of the distillation kettle, and the material discharge end of the distillation kettle isconnected with the liquid inlet end of the liquid storage box through a material discharge tube. The organic waste gas treatment system of the invention can efficiently treat waste gas and recover volatile organic compounds.

The invention discloses an environment-friendly oily antirust paint composed of the following components by the weight percentage: 40-50% of an oily acrylic emulsion, 10-30% of an antirust pigment, 20-30% of an extender pigment, 10-20% of an oily curing agent, 0.5-1% of a defoaming agent, 0.5-1.5% of a dispersing agent, 0.1-0.5% of a levelling agent, 0.1-0.5% of a rheological auxiliary agent, and 0.5-2% of an anti flash rust agent. The environment-friendly oily antirust paint has the beneficial effects that the environment-friendly oily antirust paint has less content of volatile organic matters and small environmental pollution, has quite important practical significance on energy conservation, emission reduction, low carbon and environmental protection, and can be widely used in automotive coating.

The invention discloses a water body purification device using a floating type combined technique to treat volatile organic pollutant, and relates to the technical field of organic pollutant treatment, in particular to the water body purification device using the floating type combined technique to treat the volatile organic pollutant. The water body purification device using the floating type combined technique to treat the volatile organic pollutant comprises a ship body, a fixing block and an operation chamber, the fixing block is arranged at the center of the interior of the ship body, theoperation chamber is arranged above the ship body, a water tank is arranged in the ship body, a water inlet valve is connected with the lower part of a water inlet, a clamping block is fixedly arranged at the top end of a filter net, and a reinforcing rib is fixedly arranged above the operation chamber. The water body purification device using the floating type combined technique to treat the volatile organic pollutant is characterized in that the large impurities in the water are filtered through the filter net, the situation that the large impurities in the water cause blockage of a thorough hole is prevented, meanwhile, operation staffs can conveniently clean or replace the filter net, and cleanness and smoothness of the filter net are ensured.

The invention discloses an integral air filtering product for removing volatile organic compounds from target gas and preparing and using methods thereof, and particularly discloses a base material ofa formaldehyde conversion catalyst for removing formaldehyde from ambient air. The base material comprises at least one porous wall. The formaldehyde conversion catalyst is positioned in pores of theporous walls of the base material. A capturing layer comprises activated carbon and is provided on at least one porous spacing wall and used for removing VOCs capable of poisoning the formaldehyde conversion catalyst from the target gas.

The present disclosure is directed to a coating composition comprising high oleic oil, wherein the high oleic oil comprises C18:1 fatty acids in a range of from 60% to 100% of the fatty acid moieties in the high oleic oil and a combination of C18:2 and C18:3 fatty acids in a range of from 0% to 10% of the fatty acid moieties in the high oleic oil, percentage based on the total fatty acid moieties in the high oleic oil. The disclosure is further directed to a coating composition comprising the high oleic oil produced from bio-resources, such as soybeans. The coating composition of this disclosure can have low VOC (volatile organic compounds) and can produce a coating layer having good hardness, better appearance and improved adhesion. The coating composition can be used for coating vehicles, appliances, machinery, tools, or other industrial or consumer articles.

Molybdenum oxide is doped with vanadium, nobidium, tantalum or titanium to form a stable M₅O₁₄ theta phase crystal structure as a vapor sensitive material for detecting vapors of volatile organic compounds. That material is used between electrodes connected to a measuring device to measure a change in an electrical quality in the presence of a vapor of a volatile organic compound. Concentration of the vapor is measured to low part per million ranges.

The invention relates to a primary filtering device for treating volatile organic compounds and an operation method. The primary filtering device comprises a frame, a working platform arranged on theframe, a primary filtering chamber, a reduction box, a driving shaft, a driven shaft, an outer shell, a macromolecular adsorbing plate, a macromolecular filter felt and a PLC control system; the primary filtering chamber is arranged in the middle of the working platform; the primary filtering chamber is connected with the reduction box and a coiling device; the macromolecular filter felt arrangedon the driven shaft is clung to the macromolecular adsorbing plate in the primary filtering chamber along a guide slot and penetrates through the primary filtering chamber; the other end of the macromolecular filter felt is fixed on the driving shaft; the reduction box and the coiling device are started to move the macromolecular filter felt. According to the invention, a filter felt arranged in the primary filtering chamber can be automatically online replaced in the manner of moving the macromolecular filter felt by the reduction box and the coiling device, the requirements of continuous working of a purifying system can be guaranteed and the use efficiency of the primary filtering device in equipment for purifying and treating organic matters can be effectively increased.

The invention provides an ordered mesoporous silica-glass fiber paper composite material as well as a preparation method and application thereof. The preparation method comprises the following specific steps of: synthesizing an ordered mesoporous silica material with high orderliness and high specific surface area by taking sodium silicate as a silicon source; fully mixing the mesoporous silica material with silica sol by taking the nano silica sol as a binder; adding ammonia water to adjust the pH value to enable colloidal particles to be slowly polymerized to form stable mesoporous silica gel; and completing soaking pretreated glass fiber paper in the mesoporous silica gel to make the pretreated glass fiber paper and the mesoporous silica gel fully bonded, and carrying out drying and curing. The mesoporous silica material is high in specific surface area, large in pore volume, good in degree of order and high in stability. Meanwhile, the nano silica sol has the advantages of large specific surface area, strong binding force and the like, and has good advantages as a carrier of a gas-solid catalyst. The composite material prepared by the preparation method is high in degree of order, good in stability, large in adsorption capacity and high in catalytic efficiency, and the removal rate of volatile organic compounds (VOCs) can be greatly increased.

The invention discloses VOCs removal equipment for a low-concentration VOCs waste gas treatment technology, and relates to a volatile organic compound waste gas treatment device, a gas spraying piece is fixedly arranged on the lower inner side wall of a treatment box, a pressurizing water pump is fixedly arranged on a base, a water pumping pipe is fixed to the lower end of the front side wall of the treatment box in a penetrating manner, and a spraying pipe is fixed to the upper side wall of the treatment box in a penetrating manner; the spraying piece is fixedly arranged on the upper inner side wall of the treatment box, the water inlet pipe is arranged on the water pumping pipe through a shunt valve, and the water outlet pipe is arranged on the spraying pipe through a shunt valve; according to the waste gas treatment device, the gas inlet structure is arranged, the gas inlet structure is arranged to be a rotatable structure, then when waste gas is introduced for treatment, the waste gas is conveniently and thoroughly mixed with a solution, in addition, the spraying structure is further arranged, the solution for absorption is conveniently and circularly sprayed, the contact area of the solution and the waste gas is increased, and the waste gas dissolving effect is improved.