75results about How to "Reduce production pollution" patented technology

The invention discloses a method for preparing high-activity electroplating grade copper oxide from basic cupric carbonate. According to the method, pure copper, liquid nitrogen and high-purity carbon dioxide are taken as materials to prepare the high-purity basic cupric carbonate through a centrifugal film evaporator or a scraper reaction kettle; the problem of impurities such as chlorine which may be caused by production of the basic cupric carbonate material by the traditional method is avoided; the purity of the basic cupric carbonate is improved; the high-purity low-chorine electroplating grade copper oxide is burnt from the high-purity basic cupric carbonate through a rotary kiln; the defects of inactivation, a plurality of impurities, large labor intensity, un-continuous production, long period, high energy consumption, large cost and the like due to the fact that the basic cupric carbonate at the low-temperature part is not burnt thoroughly and the content is not enough when a pushed slab kiln statically burns while copper oxide at the high-temperature part is burnt to death are overcome; the product activity is ensured; and the method is high in product quality, less in energy consumption, small in cost and more environment-friendly.

The invention relates to a mixed additive for producing an anhydrous dead-burned type of calcium sulfate whisker, and belongs to the technical field of inorganic chemical materials production. The mixed additive of the invention comprises a morphology controlling agent, an auxiliary controlling agent and a reaction system pH controlling agent. The mass ratio of the morphology controlling agent, the auxiliary controlling agent and the reaction system pH modulator is 1:0-20:30-70. The mixed additive can speed up growth of crystals, shorten reaction time, and at the same time can implement control of whisker morphology to acquire high aspect ratio hemihydrate calcium sulfate whisker. The invention further relates to a method for producing an anhydrous dead-burned type of calcium sulfate whisker. The method comprises: using calcium sulfate dihydrate, water and the mixed additive as raw materials, performing a hydrothermal reaction to acquire hemihydrate calcium sulfate whisker; after filtration, drying,calcination and cooling, acquiring the anhydrous dead-burned type of calcium sulfate whisker with calcium sulfate content being more than 98wt%. The invention is simple in process, zero in pollution, low in production cost, high in operability, good in product quality and good in stability.

The invention discloses a method for continuously preparing high-purity low-chloride electroplating copper oxide. According to the method, pure copper, liquid ammonia and high-purity carbon dioxide are taken as raw materials for producing high-purity basic cupric carbonate, so that the problem of impurities such as chlorine and the like in the conventional method for producing the raw materials of the basic cupric carbonate is avoided and the purity of the basic cupric carbonate is improved; and the high-purity basic cupric carbonate is calcined through a rotary electric furnace without scale on the inner wall for continuously preparing the electroplating copper oxide, so that the shortcomings of low content of the basic cupric carbonate due to no complete combustion of the basic cupric carbonate at the low-temperature part and complete combustion of the copper oxide at the high-temperature part in the static calcining process of a pushed slab kiln, loss of activity, high impurity content, high labor intensity, discontinuity in production, long cycle, high energy consumption, high cost and the like are overcome, the product activity is guaranteed, the product quality is high, the energy consumption is low, the cost is low, and the environment is more protected.

The invention discloses a manufacturing method of tong-oil tree modified floor, which belongs to the technical field of artificial floor product manufacturing, and is characterized in that tong-oil trees of artificial quick growth economic forest serve as the raw material; and first the tong-oil trees are sawed into floor ingots with required specification, and the tong-oil tree modified floor is completed through soaking, cooking, pre-drying, hot pressing, cooling, shaping, resurgence and other processes. The tong-oil tree modified floor produced by the invention not only has the functions of anti-corrosion and biological invasion resistance, the characteristics of aesthetics, durability and environmental protection, but also has stable material, and is not easy to deform and crack. No matter in technical indexes or in functional indexes, the tong-oil tree modified floor is comparable to the solid wood floor produced from natural hardwood tree species.

The invention discloses a rotary electric furnace and a method for preparing high-activity electro-plated copper oxide by using the rotary electric furnace. At least one percussion device is arranged on the outer wall of the furnace barrel of the rotary electric furnace, wherein the furnace barrel percussion device comprises a hollow cavity and a sphere; one end of the hollow cavity is open and the other end of the hollow cavity is closed, wherein the opening end is fixed on the outer wall of the furnace barrel; the sphere is movably arranged in the hollow cavity; the sphere moves up and down in the hollow cavity to form a clearance percussion status with the outer wall of the furnace barrel during the rotary process of the furnace barrel; the method for preparing the high-activity electro-plated copper oxide comprises the following steps of: preparing high-purity alkali type copper carbonate by adopting pure copper, liquid ammonia and high-purity carbon dioxide as materials; and obtaining the high-activity electro-plated copper oxide through roasting in the rotary electric furnace. According to the rotary electric furnace and the method for preparing the high-activity electro-plated copper oxide by using the rotary electric furnace, the defect that the low-temperature part is insufficient due to insufficient burning and the high-temperature part is burnt through during a static roasting process of the pushed slab kiln is overcome; moreover, the defects such as inactivity, a plurality of impurities, discontinuous production, long period, high energy consumption, high cost and the like are overcome, so that the activity of the product is ensured. Besides, the product quality is high, the energy consumption is less, the cost is low and the environment-friendliness is better.

The invention relates to a multi-fiber jean fabric and a production method therefor, and belongs to the technical field of textiles. The multi-fiber jean fabric is prepared through the blending of five kinds of raw materials of tencel fiber, volcanic rock fiber, acrylic fiber, cotton fiber and spandex fiber. The mass percentages of the five raw materials is 25 to 35% of volcanic rock, 10 to 15% oftencel fiber, 6 to 9% of acrylic fiber, 40 to 60% of cotton fiber, and 0.5 to 1.5% of spandex fiber. The process sequence includes: feeding, blowing, carding, roving, spinning, dyeing, weaving, pre-shrinking, and raising. The invention has the beneficial effects that the new volcanic rock fiber is added to improve the warmth of the fabric, and the denim fabric obtained by blending the five raw materials realizes the complementary advantages of different fibers, and has the functions of keeping warm and feeling comfortable, breathable and bacteriostatic; the method adopts a reasonable processto improve the blending uniformity; the process is optimized to obtain better gloss and color fastness; the heat retention rate is 25 to 35%, the heat storage rate is greater than 40%, and the physical index of the fabric is stable; a better taking effect is obtained.

The invention discloses a magnetofluid electromagnetic induction electricity taking device which comprises a liquid storage shell, magnetic liquid is contained in the liquid storage shell, an outer puncture connector with a ring is arranged at one end of the liquid storage shell, a sealing sleeve with a ring is arranged at the other end of the liquid storage shell, and an inner puncture connectorwith a ring is further fixedly arranged at the end, connected with the sealing sleeve with the ring, of the liquid storage shell. The device adopts magnetic fluid to take electricity through electromagnetic induction, and is strong in magnetism, strong in appearance shape plasticity and wider in application range.

The invention discloses a method for movably utilizing waste heat steam and a movable heat accumulation vehicle for supplying steam and hot water. The waste heat steam is input into the movable heat accumulation vehicle; a temporarily stored steam heat accumulator is arranged beside a heat source and used for collecting steam generated when the movable heat accumulation vehicle is absent, and the steam is moved away by the movable heat accumulation vehicle; a client steam heat accumulator is arranged at a client; the steam of the movable heat accumulation vehicle is supplied to the client steam heat accumulator; the movable heat accumulation vehicle can supply the steam, and also can supply the hot water with different temperatures through a built-in coil heat exchanger, so that the defect that a hot water movable heat supply vehicle only can supply the hot water is overcome; and by a method for movably utilizing the waste heat steam to supply the steam and the hot water, the conventional pipeline steam supply mode is changed, a heat supply system can be subjected to peak clipping and valley filling, waste heat resources are utilized to save energy, the emission of corresponding dust, harmful gas and the like is reduced, and energy-saving and emission-reducing effects are achieved.

The invention belongs to the field of herbicides and particularly relates to a synthetic method of s-metolachlor. The synthetic method of s-metolachlor comprises the steps that a cheap compound 2-methyl-6 ethyl benzene easy to obtain is used as a raw material, and finally the high-quality herbicide product s-metolachlor is obtained through condensation reaction, catalytic hydrogenation reduction reaction, chloride acetylation reaction and purification treatment. The simple water-phase s-metolachlor synthesis method easy to execute is provided, the yield of the s-metolachlor product reaches 98.5% and the purity reaches 98.2% in a kilogram-level experiment, and the environment-friendly synthesis method is suitable for industrial production. In addition, compared with a traditional organic solvent synthesis method, use of organic alkali is avoided, few post-treatment steps are adopted, the production pollution is low, the cost is low, required material types are few, the solvent use amount is small, the cost is low, and the method is suitable for large-scale popularization and use.

The invention discloses panel glass for a color picture tube and a preparation method thereof. The panel glass comprises the following components in percentage by weight: 55.0000-61.0000 percent of silica, 1.0000-5.0000 percent of aluminum oxide, 8.0000-12.0000 percent of strontium oxide, 8.0000-12.0000 percent of barium oxide, 3.0000-8.0000 percent of potassium oxide, 8.0000-15.0000 percent of sodium oxide, 0.0000-3.0000 percent of zirconia, 0.2000-0.5000 percent of antimony trioxide, 0.2000-0.5000 percent of cerium dioxide, 0.1000-0.5000 percent of titanium dioxide, 0.0000-0.5000 percent of zinc oxide, 0.0100-0.0200 percent of nickel protoxide and 0.0010-0.0050 percent of cobaltosic oxide. The preparation method is as follows: firstly drying used quartz sand, weighing raw materials in proportion, mixing evenly, melting and then forming, and finally annealing to obtain the finished product, and has the advantages of low production cost and little production pollution.