42results about How to "Achieve "zero" addition" patented technology

The invention discloses a coal gas deamination and residual ammonia liquor vacuum distillation integrated production method. Ammonium sulfate production equipment is used as a vacuum system device, vacuum ammonia distillation non-condensable gas is ejected and absorbed in an ammonium sulfate saturator by the aid of a vacuum ejector, and accordingly normal production in vacuum ammonia distillation is realized; by sulfuric acid absorption, alkaline substances including ammonia and the like in the non-condensable gas can be removed to generate an ammonium sulfate product; other substances enters a coal gas system, environment pollution is avoided, and zero emission of the non-condensable gas is realized; since independent tail gas recovery devices are not needed, ammonia distillation treatment cost is reduced, investment cost is saved, yield of ammonium sulfate and coke oven gas products is increased, and high environmental protection benefits, economic benefits and social benefits are achieved. The invention further discloses a coal gas deamination and residual ammonia liquor vacuum distillation integrated production system.

The invention discloses an electrolytic manganese residue baking-free brick and a preparation method thereof. The electrolytic manganese residue baking-free brick is prepared from a cementing agent M,electrolytic manganese residues, waste stone, water and the like through extrusion and curing, wherein the cementing agent M is composed of electrolytic manganese residues, lime, water-quenched slagand cement clinker. The baking-free brick takes electrolytic manganese residue waste as the main raw material to obtain higher compressive strength and better water resistance, so that the problem that the electrolytic manganese slag is stacked and pollutes the environment is solved, and a novel formula for preparing the baking-free brick is developed.

The invention discloses gypsum-based heat-conducting self-leveling mortar as well as a preparation method and application thereof. Raw materials for preparing the gypsum-based heat-conducting self-leveling mortar comprises phosphogypsum, papermaking white mud and a heat-conducting material, and does not comprise cement. The preparation method comprises the following steps of: mixing the phosphogypsum with the papermaking white mud, performing calcining and ball-milling; and mixing the ball-milled phosphogypsum and papermaking white mud with the heat conducting material, aggregate, a retarder,a defoaming agent, a water retaining agent, a water reducing agent and redispersible latex powder. The gypsum-based heat-conducting self-leveling mortar provided by the invention has good fluidity andheat conductivity, can be used for gap filling and upper-layer covering of floor heating pipelines, greatly saves the raw material cost of a floor heating system, and realizes resource reutilizationof two solid wastes, i.e., the phosphogypsum and papermaking white mud.

The invention discloses a preparation method of whole-bean soy sauce. The preparation method comprises the following steps of (1) raw material pretreatment, specifically, soybeans are divided into 50%-80% of soybeans A and 20%-50% of soybeans B in percentage by weight, the soybeans A are crushed, and the crushed soybeans A have particles of which the particle size is greater than or equal to 6 meshes and account for 30%-80% of the total weight of the soybeans A; grinding the soybeans B, specifically, the granularity of the ground soybeans B can pass through a 16-mesh screen; (2) moistening with water; (3) cooking; (4) heat treatment; (5) making koji; (6) fermenting; and (7) separating a fermentation product to obtain the soy sauce. According to the preparation method of the whole-bean soy sauce, a soybean cooking and soybean meal cooking process is adopted, it is guaranteed that the koji making moisture is smaller than or equal to 30%, it is guaranteed that koji making raw materials are not clotted, and normal koji making can still be conducted when the temperature deviation of the upper layer and the lower layer of the koji is 2 DEG C or within, the content of glutamic acid in the soy sauce fermented by the method is greater than or equal to 15g/L, and the content of amino nitrogen is greater than or equal to 1.40.

The invention belongs to the technical field of exploitation of fluid minerals such as petroleum, natural gas and shale gas, and particularly discloses a preparation method of a self-suspending propping agent, after soaking of the self-suspending propping agent with an organic solvent, the self-suspending propping agent is filtered, a filtered solution is taken for testing, and the content of isocyanate in the solution accounts for 0.1% or more; wherein the preparation method of the self-suspending propping agent comprises the following steps: (1) an aggregate, an inner membrane material and an outer membrane material are prepared, and the outer membrane material comprises outer-layer resin, an outer-layer catalyst and an outer-layer curing agent; (2) the aggregate is heated to 80-160 DEGC, the inner membrane material is added, stirring is performed, wherein the rotating speed of the stirring is 50-100 revolutions per minute; (3) the temperature is reduced to 55-110 DEG C, the outer-layer resin and the outer-layer catalyst are added, stirring is performed, wherein the rotating speed of the stirring is 50-100 revolutions per minute; and (4) the temperature is reduced to 40-90 DEG C, the outer-layer curing agent is added, and stirring is performed, wherein the rotating speed of the stirring is 50-100 revolutions per minute, the temperature is reduced to 30-60 DEG C, and the mixture is discharged out of a pot. The method is mainly used for preparing the self-suspension propping agent, and solves the problem that pure clear water cannot be used as a sand-carrying liquid for fracturing construction.

The invention discloses decorative fragrant mud and a preparation process thereof, the raw materials are natural plant aromatic substances, resin, wood and the like, the processed fragrant mud coating can emit the natural aromatic odor of plants, can be used as a decorative material, can play roles in refreshing air and improving the environment, and is non-toxic, free of peculiar smell, waterproof, and good in air permeability, the product has the decorative effect, people can enjoy the incense culture at any time without going out while playing a role in decoration, and the incense can be widely applied to residential houses, office buildings, hospitals, schools, hotels, shopping malls, underground garages, pharmaceutical factories, food factories, ships and the like to improve the indoor environment air quality, decoration and protection.

The invention relates to a method for feeding sprouted wheat to reduce phosphorus environmental emission of manure produced by raising pigs and belongs to the technical field of ecological breeding. According to the method, a principle that the high phytase activity is generated in a wheat seed sprouting primary period and natural phytate phosphorus in a feed is catalyzed into effective phosphorus capable of being used by the pigs is utilized; the content of the phosphorus in the pig manure is reduced under the precondition that the growth speed of the pigs is not influenced and calcium hydrogen phosphate is not added in pig feed, and the emission amount of the phosphorus in the pig manure to the environment is reduced. The method has the technical essentials that the sprouting length of wheat is controlled to be 0.3-0.5 centimeter; the feeding amount accounts for 20% of the mass of pig complete feed dry materials; exogenous phosphorite including the calcium hydrogen phosphate and the like is not added to the pig feed, the growth speed of the pigs is not lowered and the content of the phosphorus in the pig manure is reduced by 45%.

The invention provides an integrated reaction device and method for treating nitrobenzene wastewater through reinforced iron-carbon micro-electrolysis-ozone coupling, the device comprises an oxygen bottle, an ozone generator, a rotating packed bed, a pump and a nitrobenzene wastewater storage tank, and an annular rotor is rotationally arranged in the rotating packed bed; the rotor is sequentially provided with a rotor outer shell, an annular partition plate and a rotor inner shell from outside to inside, through holes are formed in the rotor outer shell, the annular partition plate and the rotor inner shell, the space between the rotor outer shell and the annular partition plate is filled with a metal wire mesh formed by winding metal wires, and iron carbon balls are stacked between the annular partition plate and the rotor inner shell. The rotating packed bed is provided with a gas inlet, a gas outlet, a liquid inlet and a liquid outlet; the nitrobenzene wastewater storage tank is connected with a pump; the pump is connected with a liquid inlet of the rotating packed bed; the oxygen bottle is connected with the ozone generator; the ozone generator is connected with a gas inlet of the rotating packed bed. According to the invention, the process procedure is simplified, the wastewater treatment cost is saved, and the waste of Fe < 2 + > can be effectively avoided.

The invention discloses an oat flour instant noodle with healthcare and dietary therapy effects. The oat flour instant noodle is prepared from the following materials in parts by weight: 12-20 parts of puerarin powder, 3-8 parts of egg white, 55-70 parts of oat flour and 30-40 parts of water. A method comprises the following steps: putting oat grains into a flour mill for milling for standing by; cleaning eggs, breaking the eggs and separating the egg white from yolk; milling dry puerarin slices for standing by; forming soft grain materials; feeding the soft grain materials into a left and right split type spiral curing machine; pasting the material in a puffing chamber and then extruding by a template; airing the extruded oat noodle, drying in a drying channel, fully automatically sterilizing at fixed length and fixed volume and performing modified atmosphere packaging. According to the invention, zero addition of wheat flour and salt in the oat flour instant noodle is realized, so that the oat flour instant noodle practically has healthcare and dietary therapy effects for diabetes, high blood pressure, high blood fat, adiposis, atonic constipation and the like.

The invention belongs to the field of compositions used for reinforcing fracturing action, and particularly discloses a hydraulic fracturing propping agent. The hydraulic fracturing propping agent comprises aggregates and a film coating layer, wherein the aggregates are wrapped with the film coating layer, and the film coating layer is made of resin, a curing agent and a catalyst; and an energy spectrum testing characteristic of the film coating layer is that the ratio of carbon to oxygen atom is (1.5 to 7.5) to 1. The hydraulic fracturing propping agent meets requirements in indexes such as strength, damping efficiency, broken material and acid solubility, can perform self-suspension in water, is easy to carry, and has no pollution to the environment.