43 results about "Hazardous air pollutants" patented technology

Disclosed is a sorbent for the removal of mercury from combustion flue gas and a preparation method thereof. The sorbent includes an activated heavy oil heavy ash impregnated with 0.1-30% by weight of any chemical substance selected from sulfur, iodine, bromine and chlorine. The sorbent is prepared in an economical manner using heavy oil fly ash, industrial waste generated from heavy oil-fired boilers, and has excellent sorption performance for mercury, so that a low concentration of mercury contained in combustion flue gas discharged from large-scale boilers can be removed by injection of a small amount of the sorbent. Thus, the invention can prevent a reduction in the recycling rate of coal fly ash in coal-fired power plants and minimize operation cost.

The disclosure provides methods and systems for sequestering and/or reducing sulfur oxides, nitrogen oxides and/or carbon dioxide present in industrial effluent fluid streams. A solid particulate material comprising a slag component, a binder component (distinct from the slag component), and optionally water is formed and then contacted with the effluent fluid stream to reduce at least one of the sulfur oxides, nitrogen oxides, and/or carbon dioxide. The contacting of the effluent stream may occur in a packed bed reactor with the solid dry particulate material. Methods of reducing pollutants from exhaust generated by combustion sources, lime and/or cement kilns, iron and/or steel furnaces, and the like are provided.

Chromium-free coating composition with anti-corrosion and anti-fingerprint properties, particularly suitable for metal alloys, especially galvanized steel, and coated articles. Composition comprises aqueous-resin emulsion, hazardous air pollutant-free co-solvent, organo-functional silane, metal chelating agent, and chromium-free corrosion inhibitor, and optionally pH adjusting agent.

Styrene-free unsaturated polyester resin compositions are provided which contain low amounts of hazardous air pollutants, good mechanical and physical properties and good weathering characteristics. A process for the manufacture of these resin compositions is also provided.

Wood particles or fibers and a maleated polyolefin are used to produce a composite in absence of a non-maleated polyolefin. The composite has properties enabling use in homes and avoiding the risk of formaldehyde based adhesives or other hazardous air pollutants.

The invention is directed to the use of medium to high power (greater than or equal to 1 kW) and medium to high energy (greater than or equal to 1 MeV) electron beam or X-ray to cure coatings in thick complex three dimensional automotive bodies. The medium to high power, medium to high energy has sufficient throughput and penetration to permit curing through multiple layers of steel and, therefore, is able to penetrate shadows caused by the bends, folds and curves in automotive bodies. In addition, the medium to high power, medium to high energy beam has sufficient throughput and penetration to cure the thicker coatings that accumulate in surface cracks and crevices. The invention permits the use of electron beam curable coatings and, thereby, reduces the fire hazard, hazardous air pollutant, and volatile organic problems associated with the non-reactive solvents used in the solvent based paints conventionally employed in the automotive industry.

A system for capturing and neutralizing HAP's (hazardous air pollutants) and VOC's (volatile organic compounds) at the source point by providing a closed loop remediation system which utilizes an air collection, treatment and control module containing a predetermined size bay of multiple interchangeable mini-biofilter cartridges that function to consume the pollutant and recirculate remediated air back to the source point of the pollutant. The system includes establishing a closed loop air system at a work station which generates and emits VOC's, capturing the VOC's in the air stream flow and transporting them directly into an adjacent biofilter module which contains selected microorganisms in mini-cartridges which biodegrade said VOC's and recirculates remediated air back to the source point of the pollutant. The cartridges may be contained in modules in single and/or multiple widths and heights and in conjunction with various work stations, cabinets, receptacles, and tables.

The invention discloses an inorganic zinc-rich anticorrosive paint. The zinc-rich paint is an anticorrosive powder paint which is high in content of zinc powder, thin in film and excellent in performance and is an excellent environment-friendly paint. The paint disclosed by the invention is mainly prepared from the following raw materials in parts by weight: 18-25 parts of solid sodium water glass, 10-15 parts of superfine slag powder, 15-25 parts of metakaolin, 2-5 parts of nano titanium dioxide, 1-5 parts of nano zinc oxide, 1-5 parts of nanosilicon dioxide, 0.5-1 part of a dispersant, 1.1-2.0 parts of a defoamer and 30-40 parts of zinc powder. By using an alkali-based geopolymer as a main film forming matter and the zinc powder as a sacrificial anode, the paint prepared by the invention is a dried paint which is packaged in dry powder. During use of the paint, water is just added in proportion to uniformly stir. The paint disclosed by the invention is abundant in source of raw materials, green and environment-friendly and advanced and pollution-free in preparation process. The prepared paint has the advantages of good water resistance and corrosion resistance, zero VOCs, zero hazardous air pollutants (HAPs), high solid content, low requirement on bottom treatment of metals, simple and convenient construction and the like.

The invention discloses water-based double-component epoxy self-leveling floor paint and a preparation method thereof, relating to the technical field of chemical engineering. The water-based double-component epoxy self-leveling floor paint comprises component A including 10-15% of water-soluble polyamide resin, 0.5-0.8% of sodium polycarboxylic acid, 0.2-0.5% of polyether modified siloxane, 4-6% of titanium dioxide, 10-15% of precipitated barium sulphate, 25-30% of quartz powder, 30-35% of quartz sand, 0.3-0.5% of alkaline thickening rheology aid and the balance of water and component B including 85-90% of epoxy resin and 10-15% of glycidyl ether. As the water-soluble polyamide resin is added, the water-based double-component epoxy self-leveling floor paint has the characteristics of good water solubility and good fullness, guarantees high firmness and low viscosity of the products and also ensures good leveling property of products; and the polyether modified siloxane is used as a defoaming agent, so that air bubbles generated in the process from the paint manufacturing to the construction are effectively eliminated, the surface effect of the paint films is better, the requirements for the ground humidity can be reduced and the emission of the organic solvents and the harmful air pollutants are decreased.

Grafted triglycerides comprising an acrylated triglyceride grafted with a fatty acid residue containing 4 to 28 carbon atoms. Also described are methods for making a grafted triglyceride and for curing a material selected from vinyl esters and unsaturated polyesters and mixtures thereof and optionally a reactive diluent. The method includes the steps of mixing a grafted triglyceride of the present invention with a material selected from vinyl esters, unsaturated polyesters and mixtures thereof to form a mixture, and curing the mixture to form a cured resin system. A cured resin system comprising a cured product obtained by the foregoing method and composites containing the cured product and a filler or reinforcing material are also disclosed. This method also includes use of the grafted triglycerides to make toughened resin and composite systems with reduced hazardous air pollutants without significantly reducing the glass transition temperature and significantly increasing the viscosity.

Enhanced media transport systems and structures are provided for printing environments. Enhanced vacuum table structures and associated methods may also be implemented for a variety of printer systems. Enhanced rail systems and associated carriage structures may preferably be used within a variety of printing environments, such as for but not limited to grand scale printers. Water-based binary epoxy ink compositions and associated processes provide adhesion and material compatibility that exceeds that of currently available UV curable products, while providing ultra-low volatile organic carbon (VOCs), and no hazardous air pollutants (HAPs). An integrated system and method for identification of consumables through a central database may also be implemented within different printing systems.

The invention is directed to the use of medium to high power (greater than or equal to 1 kW) and medium to high energy (greater than or equal to 1 MeV) electron beam or X-ray to cure coatings in thick complex three dimensional automotive bodies. The medium to high power, medium to high energy has sufficient throughput and penetration to permit curing through multiple layers of steel and, therefore, is able to penetrate shadows caused by the bends, folds and curves in automotive bodies. In addition, the medium to high power, medium to high energy beam has sufficient throughput and penetration to cure the thicker coatings that accumulate in surface cracks and crevices. The invention permits the use of electron beam curable coatings and, thereby, reduces the fire hazard, hazardous air pollutant, and volatile organic problems associated with the non-reactive solvents used in the solvent based paints conventionally employed in the automotive industry.

A method and composition of treating an oil or gas well having a wellbore, well casing, production equipment or recovery equipment. The method involves introducing into the wellbore, well casing, production equipment or recovery equipment a high flash point solvent blend. The blend includes at least one C₁-C₄ ester of a C₁₆-C₂₀ fatty acid component, at least one terpene hydrocarbon component (e.g., a pure gum turpentine, an oil of turpentine, or mixture thereof), and optionally at least one emulsifier component. The weight percent ratio of the at least one C₁-C₄ ester of a C₁₆-C₂₀ fatty acid component to the at least one terpene hydrocarbon component is from about 60:40 weight percent to about 95:5 weight percent, based on the total weight of the blend. The blend has a flash point greater than about 140° F. The blend may be biodegradable, and has no ozone depleting compounds, no hazardous air pollutants, and no carcinogens.

A system for capturing and neutralizing HAP's (hazardous air pollutants) and VOC's (volatile organic compounds) at the source point by providing a closed loop remediation system which utilizes an air collection, treatment and control module containing a predetermined size bay of multiple interchangeable mini-biofilter cartridges that function to consume the pollutant and recirculate remediated air back to the source point of the pollutant. The system includes establishing a closed loop air system at a work station which generates and emits VOC's, capturing the VOC's in the air stream flow and transporting them directly into an adjacent biofilter module which contains selected microorganisms in mini-cartridges which biodegrade said VOC's and recirculates remediated air back to the source point of the pollutant.

The present invention relates to a composition and method for fabricating composite resins that produce either reduced or zero volatile organic compound (VOC) and zero hazardous air pollutant (HAP) emissions. The non-volatile reactive diluents of the composite resin, fatty acid monomers, enhance the stability, shelf-life, flexibility and strength of the composite resin. The resins incorporating fatty acid monomers may be used to repair military equipment or for any commercial repair purposes.

The present invention generally relates to an aqueous coating material with low VOC (Volatile Organic Compounds) and essentially zero HAP (Hazardous Air Pollutants) suitable for coating a metal surface, a method for treating metal, particularly steel, surfaces of a structure such as a joist with such aqueous coating material, and use of such aqueous coating material to treat metal surface to provide protection against corrosion particularly during delivery, storage on site, assembly, and erection in an atmosphere.

The invention belongs to the field of medicines, health care and nursing, and relates to a medicine composition for washing a nasal cavity and a preparation method of the medicine composition. The medicine composition can dilute and clean inflammatory secretions of the nasal cavity and harmful air pollutants adsorbed by nasal mucus, dissolve part of pathogenic bacteria and viruses, clean various germs and viruses and improve the physiological environment of the nasal cavity to fulfill the aims of treating various nasal infections and upper respiratory tract infections such as nasal obstruction, rhinorrhea, blood-stained nasal discharge, postnasal drip, sneezing, nasal incrustation, dry and itching nasal cavity, foreign body sensation in the throat, excessive phlegm, expectoration, blood-stained sputum and sphagitis. The medicine composition disclosed by the invention is prepared by mixing 35 to 75 weight parts of sodium chloride and 1 to 4 weight parts of lysozyme, or 35 to 85 weight parts of sodium chloride, 0.1 to 0.5 weight part of glycine and 1 to 4 weight parts of lysozyme. The medicine composition can improve the physiological environment of the nasal cavity more quickly andaccelerate recovery of the nasal cavity. The medicine composition has the advantages of definite effect, stable curative effect, controllability and the like.

A two stage scrubber process has a first stage removing the hazardous air pollutants and recovering the majority of the ethanol. A second stage uses water as the scrubbing solvent to recover any residual ethanol that is stripped from the first stage.

The invention discloses a method for treating toxic and harmful air pollutants. The method comprises: intensively collecting paint waste gas containing paint mist particles and volatile organic substances in a paint spraying workshop through a pipe, feeding the paint waste gas into a paint mist purifying device with a built-in metal filter, adhering the paint mist in the paint waste gas to the surface of the metal filter, discharging the volatile organic substances in the paint waste gas through gaps of the metal filter and an outlet of the paint mist purifying device, feeding the waste gas into a condenser, carrying out cooling, feeding the waste gas into activated carbon for adsorption purification, discharging the waste gas into the atmosphere, after the paint mist purifying device works for some time, feeding the paint waste gas into the paint mist purifying device with the built-in metal filter, carrying out filtration treatment, carrying out condensation and activated carbon adsorption purification and heating to regenerate the paint mist purifying device after treatment on the paint waste gas. The method solves the dry purification problem of paint mist treatment, has a simple structure and realizes efficient regeneration and recycling.