199results about How to "Low solids" patented technology

A process and apparatus which reduces the fines in a liquid discharge stream and/or increases the dryness of a solids discharge stream while under a pressure equal to or greater than the vapor pressure of the liquid. There is provided a process for separating particles such as polyethylene terephthalate or polyethylene naphthalate from a liquid in a slurry comprising: a. feeding a slurry comprising solid particles and a liquid into a within a separation zone maintained at a pressure equal to or greater than the vapor pressure of the liquid; b. contacting the slurry in the separation zone with a porous filter, optionally a microfilter, nanofilter, reverse osmosis filter, or ultrafilter, and separating liquid from the particles, wherein the liquid flows through the filter into an outer annulus defined as a space between the wall of the separation device and the filter, and said porous filter optionally having a terminal point beyond which the separated liquid does not pass from the outer annulus back through the filter; c. accumulating no liquid in the outer annulus or accumulating liquid in the outer annulus at a level below or in front of the terminal point, and continuously discharging the separated liquid from the outer annulus through a liquid outlet; d. decoupling the particles from the separation zone through the solids outlet to a low pressure below the vapor pressure of the liquid at the liquid temperature within the separation zone while maintaining a pressure on the particles prior to decoupling at or above the vapor pressure of the liquid within the separation zone.

A method of dewatering corn stillage solids comprising adding to the solids an effective coagulating and flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and coagulated and flocculated solids; and separating the water from the coagulated and flocculated solids using a dewatering device.

A phenol-formaldehyde resin, having a low concentration of tetradimer, making the resin suitable for preparing a binder composition for making non-woven fiber products, such as fiberglass insulation, prepared by reacting phenol and formaldehyde in the presence of a sulfite source.

The invention discloses polyimide resin with low melt viscosity and high toughness as well as a preparation method of a composite material of the polyimide resin. The resin is high in solid content, low in solution viscosity and is easy to steep carbon fibers to prepare a high-quality carbon fiber prepreg (a belt or cloth); a melt resin formed by heating and melting the resin has the characteristics of low melt viscosity and wide melting temperature; a resin condensate formed by heating and solidifying is high in toughness and high in Tg (glass-transition temperature). The resin is suitable for steeping reinforced fibers to prepare prepregs, and a carbon fiber reinforced composite material prepared by the autoclave and the hot hubbing forming process is excellent in impact-resistant toughness, comprehensive mechanical property and high-temperature resistant performance.

A process for treating waste primary or activated sludge solids that have been removed to a digester phase of the activated sludge process through the use of powdered natural lignocellulosic materials (PNLM) and/or powdered kenaf core (PKC). These materials help this process by: (a) thickening of primary and/or waste activated sludge through adsorption, attached growth and achieving closer proximity of organisms by stimulating reduction of their associated ECP substance; (b) enhancing endogenous reduction of primary and/or waste activated sludge by thickening (see above) and improving the ratio of available carbon to available nitrogen by delivering a continuing gradual release of sugar from degrading PNLM and/or PKC; (c) enhancing the speed of endogenous reduction of primary and/or waste activated sludge—through higher efficiencies (same processes as above); and (d) improving dewatering characteristics of wasted primary and/or wasted activated sludge solids (through reduction and breakdown of ECP materials and higher densification of solids).

Integrated sewage or digestible wastes, and fats, oils, greases and waxes (FOG) waste treatment methods, systems and facilities include a slipstream loop incorporating circulation pumps, hot water heat exchangers and conventional anaerobic digesters for continuously circulating actively digesting sludge at a rate to preclude solid settlement accumulation as a warm flowable slurry source. The warmed actively digesting sludge is pumped from the slipstream loop through a rock trap into a delivery/input loop both for aiding transport or delivery of FOG waste to, and for partially filing a closed receiving/conditioning holding tank, where the warmed actively digesting sludge softens and liquefies the FOG wastes offloaded into the holding tank for further treatment at a desired treatment temperature range (whether psychrophilic, mesophilic, or thermophilic). The contents of the closed receiving/conditioning holding tank are continuously mixed by a bottom-top recirculation chopper pump to pre-treat the FOG wastes, liquefying and decreasing solids particle size allowing acidogens in the actively digesting sludge to pre-digest such wastes producing volatile fatty acids, some biogas and a highly bioreactive, flowable feedstock slurry. The produced highly bioreactive, flowable feedstock slurry can then injected back into the actively digesting sludge slipstream loop at a controlled rate where the resultant mixture then is introduced, together with raw sewage or other digestible wastes, into input or head ends of waste treatment systems having anaerobic digesters for digestion of solids and steady-state methane production. Advantages of the integrated system relate to a partial digestion of the FOG in the reaction/holding tank generating volatile fatty acids that suppress expression of methane producing methagens in the holding tank, increased steady-state methane production and significantly reduced solids volume of treated digestible wastes (sewage) and FOG wastes.

The invention relates to a lead-free environmentally friendly soldering flux and a preparation method thereof. The method comprises the following steps of: mixing synthetic organic acid, an activating agent and a mixed alcohol solvent at normal temperature according to a component formula; pouring an obtained mixture into a stainless steel container, and then adding modified rosin particles; stirring materials in the container until the rosins are all dissolved, and then stopping stirring; and standing still, filtering and hermetically packaging to obtain a soldering flux product. The lead-free environmentally friendly soldering flux is a no-clean soldering flux with low solid content, less rosin and no halide, has the characteristics of quick dry, bright and firm welding spot, uniform spreading, full structure, no corrosivity, excellent solderability, good soldering wetting, stable property, and the like, conforms to the property requirements of various electrical appliances and is suitable for soldering computers and peripheral equipment or high-precision multilayer board electronic assemblies. When in use, the soldering flux product has the advantages of low smoke, no pollution to working environment, no influence on the human health, no pollution to tracks and clamps of a tinning furnace, higher insulating impedance, good environment friendly performance and stronger market competitiveness.

Rosin-based flux for a ZnSn-based lead free solder comprises rosin, an organic acidity activator, a corrosion inhibitor, a surfactant and an organic solvent. According to the invention, the solder can be additionally provided in injection, spraying or atomization method, the addition amount is easy to accurately control, the disadvantage that the prior soldering flux is hard to brush is overcome, no paste agent, stabilizing agent or thixotropic agent or other substances containing high solid content are included, the solid content of the solder is low, the wetting power to ZnSn-based solder is strong, the residue after welding is little, a metal oxide-film can be effectively removed, the expansion rate is not less than 75%, the effects of film forming and base material protection are possessed, and the preparation method is simple and practicable.

The invention provides a preparation method for phenolic resin, which comprises the following steps: carrying out reaction on phenol, formaldehyde and organic compound containing amino and organic phosphorus compound under the condition of a basic catalyst to obtain the phenolic resin, wherein the organic phosphorus compound contains phosphorous and oxygen double bond, phosphorous and oxygen bond or hydroxyl. In the invention, the organic compound containing amino and the organic phosphorus compound are taken as modifiers to modify the phenolic resin; and nitrogenous groups and phosphoric groups are directly introduced in the structure of the phenolic resin and have the synergism inflaming retarding function so as to obtain the phenolic resin with excellent fire resistance. At the same time, the organic compound containing amino and the organic phosphorus compound enable the hydroxy content of the phenolic resin to be reduced and enable the hygroscopicity resistance of the phenolic resin to be improved.

The invention relates to water-based adhesives for industrial applications obtained by mixing water-redispersible polymer powder and water-soluble polymer powder with water, wherein the weight ratio of the water-redispersible polymer powder to the water- soluble polymer powder is from about 0.001 : 1 to 100 : 1 and the water-based adhesive has a set speed of less than 300 sec, when measured with a 36 [mu]m thick layer at 23 DEG C and 50% relative humidity and 385 [mu]m thick carton boards with a weight of 275 3 g/m<2> and Cobb values on one side of 43 g/min/m<2> and 27 g/min/m<2> on the other side, has a solids content of about 7.5 to 70 wt.-% and a Brookfield viscosity at 23 DEG C at 20 rpm, measured according to the ASTM D1084 standard, of about 500 to 10'0OO mPas. The water-based industrial adhesive has the capability to bond a low surface tension substrate to a cellulosic substrate, in particular with a weight-ratio of water-redispersible polymer powder to water-soluble polymer powder from about 0.5 : 1 to 100 : 1 , thus can replace conventional aqueous adhesives based on synthetic polymer dispersions. The benefits of the invention are manifold such as faster set speeds and increased machine speeds, logistical advantages due to handling powders instead of liquids, leading to e.g. prolonged shelf life, no water transportation and being an environmentally friendly, low VOC containing adhesive.

Disclosed is a positive photosensitive resin composition that includes (A) a first polybenzoxazole precursor that includes: a repeating unit of Chemical Formula 1 and a thermally polymerizable functional group at least one terminal end; (B) a second polybenzoxazole precursor that includes a repeating unit of Chemical Formula 3; (C) a photosensitive diazoquinone compound; (D) a silane compound; and (E) a solvent.

The invention discloses a method for preparing high-conductivity slurry from doped graphene, relates to the field of preparation methods of high-conductivity slurry and overcomes the technical defect of poor conductivity of the traditional mature conductive slurry. The method comprises the following steps: (1) weighing conductive slurry, graphene, a dispersing agent and deionized water according to the mass ratio of 100: (5-15): (3-5):700; (2) mixing the dispersing agent and 1/2 of deionized water, and stirring for 1h under a vacuumized condition; (3) adding the conductive slurry, and stirring for 30min under the vacuumized condition; (4) adding the graphene, and stirring for 2h under the vacuumized condition; and (5) adding the residual deionized water, stirring for 30min under the vacuumized condition, measuring the viscosity and solid content of the prepared slurry, and controlling the viscosity to be 100-500mpa.s and controlling the solid content to be 3-8%. The mature conductive slurry is diluted, and most of the original conductive agents are replaced with a small part of doped high-conductivity graphene, so that the preparation process of the slurry is simplified, and the slurry is high in conductivity, small in internal resistance, uniform in particle size distribution, easy to coat, low in cost and high in cost performance.

A packaging system for the disposal of any manner of used or soiled personal care products includes a package member configured for the receipt of the used personal care products therein. The unique packaging disposal system member is comprised of a biodegradable, degradable, opaque, sealable, generally a soft-side bag like structure which is part of common element consisting of multiple packaging systems which are connected together or to a common element. The package member includes an opaque external surface having a desired nondescript aesthetic configuration or appearance for the purpose of discreet disposal of used or soiled personal care products. The aesthetic configuration of the said invention may include any manner of print, color, etc., for the purpose of disposal instructions, warnings or purchasing indicia. In other words, one viewing the package from the outside is not given obvious, noticeable indication that the package contains used or soiled personal care products nor are the items contained therein visible through the packaging system member.

The invention relates to a silt and sewage treatment method, and belongs to the technical field of mine sewage treatment. The method comprises the following steps: (1) performing silt separation, namely performing primary separation on the silt and the sewage, and separating sand out; (2) performing sedimentation treatment, namely adding 0.2 to 0.4 mass percent solution of anionic polyacrylamide into the sewage, then adding 0.1 to 0.3 mass percent solution of anionic polyacrylamide into the sewage after sediment is generated, and separating the sediment out; and (3) performing sediment filter pressing, namely filter-pressing the sediment separated out by the step (2). The method of the invention effectively solves the mine sewage treatment problem, and separates three useful substances out comprising coarse sand, fine sand and sludge so as to increase the creation income of the enterprise.

The invention discloses a water-based halogen-free resin-free antimicrobial no-clean soldering flux. The soldering flux comprises, by weight, 9-25 parts of activating agents, 1-5 parts of surface active agents, 1-5 parts of film-forming agents, 0.01-0.08 part of corrosion inhibitor, 0.1-1 part of antioxidant, 0.5-1 part of antibacterial agent, 0.1-0.5 part of organic solvent and the balance deionized water. The activating agents comprise at least two kinds of DL-malic acid, succinic acid, glutaric acid, adipic acid, phthalic acid, citric acid and lactic acid; the surface active agents comprise at least one of fatty acid methyl ester ethoxylate or isomerism tridecane alcohol ethoxylate, the corrosion inhibitor comprises at least one of benzotriazole (BTA) and triethylamine, and the antibacterial agent is chitosan. Through the mode, the water-based halogen-free resin-free antimicrobial no-clean soldering flux has the advantages of being free of resin and halogen, low in solid content, good in wettability, low in cost and good in stability.

Luminescent lanthanide complex and inks containing the complex as well as its method of production and article including the complex, wherein the complex includes the formula: