36results about How to "Does not consume water resources" patented technology

The invention relates to an acetate starch formulation for textile sizing material, and a preparation method thereof. The acetate starch formulation comprises corn starch, caustic soda, oxidizer, reducer, and esterifying reagent, and is characterized in that the acetate starch formulation also comprises alcohol. The preparation method comprises the following steps: adding the corn starch, causticsoda and alcohol into a feed box, and stirring; sprinkling liquid oxidizer, sprinkling powdery reducer in dispersed manner, spraying with liquid esterifying reagent, heating with steam, evacuating, heating with steam to 65 DEG C, and persistently evacuating until the alcohol in the feed box is completely volatilized, distilled and recovered; and discharging, sieving, pulverizing and mixing. The alcohol solvent phase is employed to prepare acetate starch to reduce the production cost. The acetate starch replaces PVA in textile pulp application to acquire good effect, higher substitution degree, and excellent size film performance, and improve the sizing quality and level of subsequent textile sizing. The alcohol solvent phase production does not require water resource to have no waste water treatment.

The invention discloses a proportioning and preparing method for producing graft starch and particularly relates to composite modified graft starch for textile slurry. The composite modified graft starch for the textile slurry comprises the following raw materials in parts by weight according to proportion: 900 parts of acetate starch, 80-100 parts of alcohol, 40 parts of acrylamide, 10 parts of acrylic acid, 40 parts of vinyl acetate, 5 parts of caustic soda flakes, and 0.2-0.5 part of composite catalyst; and the requirements on the viscosity of the acetate starch is that L (Low Viscosity) is 4.0-0.0mPa.S, M (Middle Viscosity) is 8.1-12.0mPa.S, H (High Viscosity) is 12.1-16.0mPa.S, and the degree of substitution is 0.10+ / -10%. According to the invention, a small amount of alcohol is adopted for production for the first time in China, and two problems to be solved on no utilization of water resources and no wastewater emission and treatment are solved. Ternary mixed monomers are grafted onto starch macromolecules under the condition of the alcohol solvent. Therefore, the serous coat performance of starch slurry is greatly improved, the requirements of textile manufactures on the starching of high-count polyester / cotton varieties, and the composite modified graft starch can replace PVA (Polyvinyl Acetate) to perform environment-friendly starching.

The invention discloses a method for efficiently recovering and reselecting steel slag, comprising the following steps of: A, smashing and magnetically selecting: selecting iron in steel slag in a stock dump by a lifting electromagnet, directly charging the steel slag into a smasher to be smashed, and magnetically selecting the smashed steel slag by a rubber belt conveyor and a permanent magnetic iron remover in a layering way; B, smashing and magnetically selecting again: magnetically selecting the treated steel slag by the rubber belt conveyor of a head wheel belt permanent magnetic tumbling cylinder and the permanent magnetic iron remover in a layering way; C, extruding and smashing the steel slag into fine powder by a roller type grinding circulating system; D, selecting the iron powder with refine grain diameter by a dry type powder selector; and E, grinding the fine powder steel slag which is separated by the roller type grinding circulating system and a steel slag selecting and recovering system by a ball grinder system. The method is simple and easy, and convenient to operate, so that when the iron is selected, the steel slag low-heat concrete which accords with the national standard requirement can be produced by the steel slag. The production cost and the energy consumption can be reduced, the land occupancy can be reduced, the ecological environment can be protected, and the good economic benefit, social benefit and environmental benefit can be obtained.

The invention discloses a heating and cooling system using swallet waste heat by industrial and mining enterprises, relating to the field of residual heat waste heat resource utilization. The heating and cooling system comprises a well-head freeze protection water source heat pump unit (5), a worker bath water source heat pump unit (6), an industrial heating and cooling water source heat pump unit (7), a mine water recycle pump (2), a primary water recycle pump (4), three secondary water recycle pumps, a bath water heating recycle pump (13), two plate-type heat exchangers and a sub-water catcher (17). In the invention, a water source heat pump technology is used and reclaimed water waste heat in a mine water treatment plant is comprehensively utilized for worker bath, industrial heating in winter, well-head freeze protection and cooling of office buildings and apartment blocks in summer; a coal-fired boiler system is thoroughly replaced; a water source heat pump system only extracts the heat of the reclaimed water of the treated mine water and domestic sewage, and additional water resources are not consumed; and the heating and cooling system has the advantages of remarkable energy saving effect, obvious economic benefit, outstanding environmental benefit and the like.

The invention relates to a production method of natural resin, in particular to a preparation method of dewaxed decolorized shellac. The present invention is raw material with granule shellac, adds 95% ethanol solvent, obtains shellac ethanol solution; Allow shellac wax and impurity in the shellac ethanol solution to fully precipitate, will account for 2 / 3 of the total volume of the solution, wax in shellac The content of < 0.5% of the upper clarified liquid is separated, and the lower layer, which accounts for 1 / 3 of the total volume of the solution, is centrifugally filtered, and the filtered clear liquid is combined with the above clarified liquid. Cool the combined ethanol solution of shellac to 10°C, filter under reduced pressure to obtain dewaxed ethanol solution of shellac with a wax content of <0.2% in shellac, and perform three decolorization treatments on the ethanol solution of dewaxed shellac respectively: to obtain dewaxed lac ethanol solution Decolorized lac sheets. The method of the invention has the advantages of simple operation, mild decolorization condition and good product quality, and can be used for large-scale production of dewaxed and decolorized lac.

The invention provides a gas de-oiling purifier which is characterized in that the bottom and the upper end of a cylindrical housing are provided with a lower seal head and an upper seal head; the upper seal head is provided with a gas collecting bag of an exhaust port; an inner cylinder is installed inside the cylindrical housing; the inner cylinder is positioned on the lower seal head; a removable adsorption bed and an oil-water separation bed are arranged inside the inner cylinder; the top of the inner cylinder is equipped with a screen; the lower seal head is provided with a water outlet, a water inlet and a gas inlet; the water inlet and a water inlet coil inside the cylindrical housing are connected; the gas inlet and a gas inlet coil inside the cylindrical housing are connected; upper and lower current equalizers are arranged between the inner cylinder and the cylindrical housing above the gas inlet coil; a refrigerating coil connected with a refrigerating machine is arranged between the upper and lower current equalizers; and the refrigerating coil is fixed on the cylindrical housing. By the gas de-oiling purifier, oils, solid particles and part of harmful gases in the air in an enclosed space can be removed, and purified gases are discharged. Thus, physical health of people in those enclosed spaces is guaranteed.