58results about How to "Guaranteed clean production" patented technology

The invention discloses a waste concrete recycling and screening device, which mainly comprises a first screening device, a second screening device and vibration devices, wherein the first screening device has a multi-layer rotary screen structure; the second screening device has a single-layer rotary screen structure; the first screening device and the second screening device are connected through conveying equipment; lower parts of the first and second screening devices are provided with the vibration devices; and the first and second screening devices can move vertically along the vibration devices to vibrate. A problem that meshes of the screening devices are blocked is solved and the screening efficiency is improved. A mixture of coarse aggregate (stones), fine aggregate (sand) and hardened mortar recycled from waste concrete is effectively screened, and the separated and screened stones and sand have performance similar to natural stones and sand and can be reutilized in newly mixed concrete; and sand in small grain size (less than 1.25mm) of the hardened mortar and powder in grain size of less than 0.16mm of the hardened mortar can be screened out totally to serve as a cement mixed material or an admixture of premixed concrete, so that waste resources are recycled.

The invention provides boric ester base fluid for brake fluid and a preparation method thereof. The boric ester base fluid is prepared from oligo ethylene mixed ether and boric acid by a non-isothermal variable pressure dynamic reaction process. In the preparation, the non-isothermal variable pressure dynamic reaction conditions are utilized, so that steric hindrance of three boron-oxygen bonds in the boric acid make the boric acid combined with the refined oligo ethylene ether with different molecular weights stepwise to synthesize the boric ester base fluid with novel structure and composition, which is provided with three different ester groups, and the defects of long time of isothermal esterification reaction and low esterification efficiency are overcome. Meanwhile, trihydroxy benzene of the boric acid can be completely reacted, and cannot cause adverse effect brought by residual acidic hydroxyl. The prepared boric ester base fluid has the dry equilibrium reflux boiling point ofbetween 250 and 290DEG C, the wet equilibrium reflux boiling point of between 180 and 200DEG C, the kinematic viscosity at -40DEG C of 800-1,300mm<2> / s, the kinematic viscosity at 100DEG C of 2.0-2.5mm<2> / s and has good high and low temperature properties.

The present invention relates to a kind of preparation method of the water-based bass with pressure-resisting and high-resilience performance, and the method comprises the following steps: (1) preparing slurry: ① preparing water-based bass foaming slurry: adding 200 to 300 parts of water-based polyurethane resin in turn Add 10-30 parts of tap water, 2-5 parts of water-based dispersant, 1-3 parts of water-based cross-linking agent, 3-6 parts of water-based foam stabilizer, 3-6 parts of water-based foaming agent, 2-5 parts of medium-temperature microsphere hair Foaming agent, 20-40 parts of filling powder, 1-2 parts of water-based thickener, after stirring and mechanical foaming, a water-based bass foaming slurry with uniform cells is obtained; Add 85~95 parts of tap water to 1 part of demulsification curing agent, stir evenly to get the solidified solution; (2) Preparation of water-based base: apply the water-based base foam slurry evenly on the knitted or woven fabric, and solidify with the solidified solution After that, it is washed with water and pressed dry in turn, and finally enters the five-zone stepped heating oven for foaming and drying. The invention has the advantages of low cost, safety and environmental protection, pressure change resistance and strong air permeability.

The invention relates to a paper laminating machine, which comprises a laminating body, a waste box is arranged at the tail of the laminating body, a waste guide roller is arranged on the waste opening on the top of the waste box, and a squeezing plate and a collision plate are respectively arranged at both ends of the waste box. , the waste box is provided with a telescopic device that drives the extruding plate to move to the collision plate, and the side of the collision plate close to the extrusion plate is provided with several heat-melting platforms, and a heater is arranged in the heat-melting platform. Squeeze the waste film to increase the collection amount in the waste box, and heat and fuse the waste film after extrusion to maintain the extrusion state and increase the collection amount, which is convenient for the subsequent collection of waste film.

The invention discloses a high-temperature pyrolysis system for domestic waste treatment, belonging to the field of solid waste harmless disposal, which includes a waste feeding unit, a waste pyrolysis unit, a pyrolysis gas combustion and heat exchange unit, a tail gas treatment unit and There is a sealed cover between the ash discharge unit, the garbage feeding unit and the garbage pyrolysis unit. The integrated garbage pyrolysis and combustion furnace is cylindrical in shape with a height-to-diameter ratio of 2 to 4, and its internal cavity is divided into thermal The pyrolysis chamber and the combustion chamber are equipped with a solid cloth grid. The pyrolysis gas combustion and heat exchange unit includes a plurality of heat exchange tubes arranged around the pyrolysis chamber with the pyrolysis chamber as the center of the circle. The tail gas treatment The unit is connected to the gas collecting hood on the top of the furnace, which is used to treat the tail gas to prevent environmental pollution. The ash discharge unit is connected to the slag discharge port of the garbage pyrolysis and combustion integrated furnace, which can provide a sealed channel for the ash discharge. The high-temperature pyrolysis system of the invention can continuously and stably perform garbage pyrolysis, oxygen-controlled combustion and tail gas treatment, and is environmentally friendly without odor and waste water.

The invention relates to a clean production control method for vertical electric furnace steelmaking, which belongs to the technical field of metallurgy and environmental protection. The technical solution of the present invention is: to install individual flue gas collection hoods at all the flue gas generating points of the vertical electric furnace; to divide all the flue gas collection hoods into system functions; to carry out secondary classification and independent control of the same functional flue gas collection system; Through different scrap steel cone ratios, different flue gas system control models are formulated; according to different smelting periods, the residual CO in the primary flue gas is burned by adjusting the special valve (5) for secondary combustion, and then the flue gas is treated. The beneficial effects of the present invention are: 100% capture and treatment of vertical electric furnace steelmaking flue gas; reduction of escape of primary flue gas, improvement of airtightness in electric furnace, and reduction of dioxin generation in flue gas; The interlocking control adjustment is more conducive to the energy saving of the system; it can ensure the clean production of the vertical electric furnace steelmaking.

The invention discloses a packaging machine capable of being applied to the sampling industry. The packaging machine comprises a machine frame, wherein a sample inlet mechanism, an automatic cover pressing device, a sample discharge mechanism, a conveying mechanism and a control system are mounted on the machine frame; a plurality of sealable charge buckets are arranged on the conveying mechanism; the motion trails of the charge buckets on the conveying mechanism are connected in series with the sample inlet mechanism, the automatic cover pressing device and the sample discharge mechanism in sequence; and the bucket covers of the charge buckets are pressed to the tops of the charge buckets through the automatic cover pressing device, and mineral samples in the charge buckets are packaged in a sealed way. The packaging machine has the advantages of simple structure, easiness in control process, high running reliability, low fault rate, good sealing property and the like.

The invention discloses a recycling method for sound-insulation cotton waste and belongs to the technical field of resource recycling. The method comprises the treating steps: performing first-level crushing on the sound-insulation cotton waste, performing second-level crushing on the sound-insulation cotton waste subjected to the first-level crushing, performing first-level air separation on the sound-insulation cotton waste subjected to the second-level crushing, performing third-level crushing on the sound-insulation cotton waste subjected to the first-level air separation, performing second-level air separation on the sound-insulation cotton waste subjected to third-level crushing, separating the sound-insulation cotton waste subjected to second-level air separation and dedusting the separated sound-insulation cotton. According to the method, the continuous crushing, separation, purification and dedusting on the sound-insulation cotton waste are realized; separated rubber and felt can be recycled, so that the engineering degree is high; the dedusting can be further performed after crushing and separation, so that the cleaning production is ensured, and the environment protection is facilitated; a sound-insulation cotton waste indentifying process is not required; and the method has the characteristics of being large in treating amount, easy in industrial application, low in cost, high in efficiency, simple in structure, free of pollution and the like, and the environment pollution is reduced.

The invention discloses a preparation method of repeatable pasting solid glue. In a normal temperature reaction kettle at 0-40°C, the raw materials used are added in the following proportions by weight: 60-75 parts of polyacrylate compound, 5- 8 parts, 10-15 parts of polyvinylpyrrolidone and 6-8 parts of sodium stearate, stirred for 1 hour and heated up to 78-80°C, kept for 1 hour, and filled at 80°C. The flow process of the invention is simple, and it only needs to accurately weigh the proportion, control the temperature well, and control the reaction time well. In the whole production process, there is no waste, no pollutants, and clean production is maintained. The solid glue prepared by it can be pasted repeatedly, and the office paper or advertising paper coated with glue can be arbitrarily pasted on wallboards, glass, textiles, and office papers, and can be torn, pasted, torn, and pasted again. Reuse more than 30 times without leaving any marks on the adherend.