48results about How to "Reduce dust emissions" patented technology

A water-absorbing agent according to the present invention includes water-absorbent resin particles having an internal cross-linked structure,.wherein a vicinity of a surface of the water-absorbent resin particle is cross-linked with a surface cross-linking agent, and the water-absorbent resin particle has therein a sea-island structure having (i) part containing a first water-soluble multivalent metal salt such as aluminum sulfate and (ii) part not containing the first water-soluble multivalent metal salt. With this arrangement, it is possible to provide a water-absorbing agent having less water-soluble component content, more excellent liquid permeability, and more excellent water retention under pressure than the conventional water-absorbing agent.

A wiping sheet is provided, which presents excellent in handling during wiping, high wiping ability for greasy dirt, and less liquid remains on an object after wiping. A wiping sheet having a fiber structure (such as a woven fabric, a knitted fabric and a nonwoven) is obtained, which includes an ultrafine fiber layer containing ultrafine fibers having a fineness of at most 0.9 dtex which result from at least two types of ultrafine fiber-generating conjugate fibers, at least one conjugate fiber giving ultrafine fibers containing a modified vinyl alcohol resin, and the other conjugate fibers giving ultrafine fibers containing another resin(s). The ultrafine fibers can be obtained by a first splittable conjugate fiber including a component containing the modified vinyl alcohol resin and a second splittable conjugate fiber composed of components of other resins. In the ultrafine fiber layer, the fibers are preferably bonded by thermoadhesive resin-containing ultrafine fibers.

An odor control product is disclosed comprising an activated carbon impregnated with a metal oxide and a salt, wherein the carbon has an activity high enough to compensate for the physical adsorption capacity used by the salt. Methods of making metal-impregnated activated carbon using water-soluble metal salts are provided without need for ammoniacal solvent media. An activated carbon base of higher activity than would be normally employed is impregnated with water-soluble metal salt. The impregnated carbon is impregnated with an aqueous alkaline solution and the resulting hydroxide decomposed to the metal oxide.

The object of the present invention is to provide a toner for development of electrostatic images (hereinafter referred to as toner) which, while preventing dust during fixation, secures improved hot offset resistance and is excellent in providing good image quality. The invention relates to the toner that comprises a binder resin, a colorant and a wax, wherein the wax has, while in a state of being contained in the toner, a melting point of from 55° C. to 90° C., and the value Dt of the toner satisfies a specific formula.

The invention relates to a method for recovering fine catalyst powder to repelletize. The method is applicable to an alcohol ether-to-olefin fluidized bed system. The method comprises the following steps: collecting the fine catalyst powder from the alcohol ether-to-olefin fluidized bed system by a dust remover inside a fluidized bed reaction system; directly feeding the collected fine catalyst powder to the catalyst pelletizing process; mixing with a fresh catalyst raw material according to any ratio, so as to replace a part of raw materials for pelletizing an alcohol ether-to-olefin catalyst. According to the method disclosed by the invention, the alcohol ether-to-olefin catalyst is recovered by the dust remover after being worn out and broken into a lot of fine powder, and applied to the pelletizing process of a new batch of catalyst. A part of pelletizing material is replaced under the condition of not affecting the performance index of the newly pelletized alcohol ether-to-olefin fluidized bed catalyst, so that dust emission is reduced, the pelletizing raw material cost is reduced, and a part of expenses are saved while the alcohol ether-to-olefin catalyst is friendly to the environment.

A fine-particle, free-flowing rubber powder containing silicatic fillers, one or more organosilanes having trialkoxysilyl groups, and a rubber prepared by solution polymerization is prepared by a process that starts from a two-phase system: 1) filler in water, and 2) rubber in organic solvent. A rubber/silicatic filler/silane composite is formed during transfer, under gentle conditions, of the various reactants into a single phase. The process features a high degree of freedom in selecting forms of filler and in selecting the organosilane and gives a finished rubber powder in which a silicatic filler and an organosilane have undergone complete chemical reaction.

The grease composition for a clean environment includes, a base oil, a thickener and a extreme-pressure agent, in which a kinetic viscosity of the base oil at 40° C. is 100˜300 mm²/s, the thickener comprising a lithium complex soap, a content of the thickener is 10˜40 mass % with respect to the total amount of the grease composition.

The invention discloses dust treatment equipment. The equipment comprises a dust lead-in unit, a dust treatment unit, a gas emission unit and a control unit, wherein the dust lead-in unit and the dusttreatment unit are communicated with each other through an air inlet pipeline; the dust lead-in unit comprises an induced draft pipe, an induced draft fan, and a filtering screen arranged at the outlet of the induced draft fan; the dust treatment unit comprises a spraying unit performing spraying treatment on lead-in dust, and a retreatment unit performing retreatment on dust treated by the spraying unit; the gas emission unit comprises a dust concentration sensor for monitoring the concentration of dust in emitted gas, and an air outlet pipeline for emitting gas; the air outlet pipeline is communicated with the air inlet pipeline through a return pipe, so as to ensure that gas returns to the dust treatment unit. The dust treatment unit sequentially performs spraying treatment, dehumidification treatment and electrostatic dust collection treatment on gas containing dust, and is high in dust removal efficiency; the dust concentration sensors monitors the concentration of dust in the treated gas, and the dust emission load is greatly reduced.

A seam-sealed filter in which the seam is sealed with a seam tape comprised of an expanded fluoropolymer, such as ePTFE and copolymers thereof, having a crosswise matrix modulus of greater than 1,950 psi and an enthalpy ratio of less than 0.6 is disclosed. Such seam-sealed filters are capable of undergoing greater than 50,000′pulse-jet or reverse air cleaning cycles without substantial cracking or peeling of the sealed seam. Accordingly, the seam-sealed filters in the form of bags are particularly suitable for use in reducing particulate emissions in cement baghouses and the like.

An environmental shield for reducing or eliminating leakage of materials from transit vehicles, including truck-mounted concrete mixers, is provided. The environmental shield preferably engages at least a portion of an opening on a mixer drum such that the leakage that generally occurs in such situations as travel along hilly or bumpy terrain, surging, etc. may be prevented or minimized. The environmental shield preferably includes a discharge cover and a combination steel/rubber abrasion resistant sealing member and may be preferably coupled to a charging hopper of the transit vehicle.

Recycled carpet mineral filler material is processed to form pellets that can be used in a variety of applications, such as an agricultural lime product, an asphalt paving additive, a loss control material, or cat litter. Used carpet undergoes a shredding process separating valuable resin fibers from the mineral filler and the residual glue. The mineral filler/residual glue undergoes a screening process and then a pelletizing process to produce an agricultural lime product. A liquid or dry adhesive binder can be added to facilitate compaction of the mineral filler in such a manner as to form a pellet, which reduces dust and increases the ease of handling.

A process for making an agricultural lime product utilizes recycled carpet mineral filler material. Used carpet undergoes a shredding process separating valuable resin fibers from the mineral filler and the residual glue. The mineral filler/residual glue undergoes a screening process and then a pelletizing process to produce an agricultural lime product. A liquid or dry adhesive binder can be added to facilitate compaction of the mineral filler in such a manner as to form a pellet, which reduces dust and increases the ease of handling.

The invention relates to a novel transparent high-level porcelain mud material and a porcelain product thereof. The novel porcelain mud material is formed by body and glaze raw materials which are integrally mixed. The formula of the mud material comprises the following raw materials by weight percent: 20-30 percent of kaolin; 10-15 percent of feldspar (potassium feldspar and soda feldspar); 35-45 percent of quartz; 10-20 percent of porous hydroxyl calcium phosphate; 2-3 percent of spodumene and 1-3 percent of talc. In the formula, the porous hydroxyl calcium phosphate is used to substitute for the traditional beef bone ash. Compared with a bone ash porcelain production process flow, the processes of the production process flow of the invention are decreased by half approximately, no 'polishing' process is required and the dust emission is reduced; no 'water washing' process is required and the water resource consumption is reduced; and no 'drying' process is required, the energy is saved because 'double firing' process is changed to 'single firing' process, and the waste saggar is not required to be treated. Compared with the bone ash porcelain manufactured by using a traditionalmethod, the transmittance of the product is higher, the production processes are less, the energy consumption is low, the 'three-waste' is less, the cost is low and the mud material can be used for industries such as household porcelains, display porcelains, decoration porcelains, lamp porcelains and the like.

A mortar composition in the form of a dry powder, ready for use, comprising at least one powdery binder and at least one aggregate, as well as possibly at least one standard additive and/or adjuvant, and formed from particles, at least some of which, referred to as fine particles, are liable to produce an emission of dust, characterized in that it also comprises a fluid additive that consists of least one non-polar hydrocarbon organic substance and that has a capacity for agglomeration of the said fine particles, and in that the dry mortar composition comprises agglomerates of fine particles formed by the fluid additive.