31results about How to "Eliminate acidity" patented technology

The invention relates to a method for using chemical reaction deposit to decorate the outer surface acid of ZSM-5 zeolite. Wherein, said method is characterized in that the silicone grease and the molecule screen are reacted in sealed container at 140-170Deg.C to be cooled and baked; and it uses cyclohexane solution of ethyl orthosilicate at 1-2.0mol / l; therefore, the silicon atom of ethyl orthosilicate can be completely carried by the molecule screen; and then left slag will not contain silicone grease. The invention has high carry efficiency of silicone grease, that only carrying the micrometer ZSM-5 one time while the opposite selectivity of catalyst can reach 90%, and carrying nanometer ZSM-5 two times while the opposite selectivity of catalyst can reach 90%.

The invention discloses an ardealite-based wood-like floor, and a preparation method thereof. The ardealite-based wood-like floor is prepared from, by weight, 50 to 70 parts of ardealite, 10 to 18 parts of fly ash, 0.5 to 3 parts of fiber, 20 to 30 parts of yellow phosphorus slag, and 2 to 6 parts of quick lime. The ardealite-based wood-like floor is prepared taking ardealite as a main raw material, is capable of solving problems caused by excess ardealite, and possesses important significance on environment protection and sustainable development. The obtained ardealite-based wood-like floor is light, possesses excellent water resistance, flame resistant, and weather resistance, is high in compressive strength, and can be widely taken as indoor and outdoor decorative materials.

The invention discloses an imitation wood grain decorative plate and a preparation method thereof. The imitation wood grain decorative plate is prepared from the following raw materials in parts by weight: 40 to 60 parts of ardealite, 10 to 16 parts of coal ash, 10 to 14 parts of cement, 15 to 24 parts of yellow phosphorus slag, and 1 to 4 parts of calcined lime. The invention has the advantages that the imitation wood grain decorative plate is maintained under the condition that the pressure is 0.3 MPa, and the steam temperature is 128 to 132 DEG C, so that the quality and the finished product yield of the imitation wood grain decorative plate are remarkably improved, and low energy consumption, high productivity and low investment are achieved; meanwhile, through the maintenance method, the shrinkage rate of a base material in a dry environment and the expansion rate of the base material in a water-soaked environment are remarkably reduced, the compressive strength of the base material is enhanced, and the service life of the base material is prolonged.

The invention discloses an allyl chloride epoxidation method for preparing epichlorohydrin. According to the invention, under the existence of a titanium silicon molecular sieve and resin composite modified catalyst, with alcohol as a solvent, allyl chloride and hydrogen peroxide are subjected to an epoxidation reaction, such that epichlorohydrin is produced. According to the invention, a fixed bed reaction manner is adopted, such that a problem of separation difficulty of titanium silicon catalyst powder and a reaction liquid of a traditional slurry reactor is solved. The reaction efficiency is improved. Also, with the modification upon the catalyst, a ring-opening side reaction of the epoxide is eliminated, and product selectivity is improved.

The invention discloses a granite-like decorative plate comprising an ardealite substrate and a preparation method thereof. The granite-like decorative plate is prepared from the following components in parts by weight: 30-80 parts of ardealite, 15-60 parts of yellow phosphorus slag, 1-20 parts of cement, and 0.1-10 parts of quick lime. The yellow phosphorus slag, the cement, the quick lime and the ardealite are mixed and aged; therefore, the acidity of the ardealite is eliminated; the content of soluble matters in the ardealite is reduced; the solidification property of the ardealite is increased; by means of addition of the cement, the solidification property of the ardealite is further increased; the ardealite is modified and subjected to hydration reaction with the yellow phosphorus slag so as to generate a main product, namely ettringite crystals; and therefore, the strength and the water resistance of the granite-like decorative plate are obviously increased.

The invention discloses a phosphogypsum substrate simulated wood floor and a preparation method thereof. The phosphogypsum substrate simulated wood floor is prepared from the following raw materials in parts by weight: 50-70 parts of phosphogypsum, 10-18 parts of flyash, 0.5-3 parts of fiber, 20-30 parts of yellow phosphorus slag and 2-6 parts of quick lime. The phosphogypsum substrate simulated wood floor is prepared by taking the phosphogypsum as the main raw material, solves the current situation that the phosphogypsum is piled up like a mountain and has an important meaning for the environment protection and the sustainable development. Besides, the produced phosphogypsum substrate simulated wood floor has the advantages of light weight, good waterproof and fireproof performances, high compressive strength and strong weather fastness and can be widely used as an indoor and outdoor decorative material.

The invention relates to a preparation method of modified biologically-activated filter fillings, comprising the following steps of: (1) cleaning an inorganic carrier with the grain diameter of 3-8 millimetres, sequentially carrying out acid cleaning, alkaline cleaning and drying to obtain dry fillings; (2) adding the dry fillings to a metal salt solution to carry out soaking and ultraphonic, drying and sintering to obtain sintering charges; (3) naturally cooling and drying the sintering charges to obtain dry sintering charges; (4) adding the dry sintering charges to a polymeric hydrogel solution containing trace elements and nutrient salts, carrying out soaking and ultraphonic and reacting in a saturated boric acid solution or a 3% calcium chloride solution so as to obtain crosslinked fillings; and (5) drying and naturally cooling the crosslinked fillings so as to obtain the modified biologically-activated filter fillings. The invention has the advantages of simple process and easy implementation; and in addition, the obtained modified biologically-activated filter fillings can increase the activity and the number of biomembranes, shorten the membrane-forming periods of biological aerated filter fillings and enhance the sewage treatment efficiency and the stability of a biological aerated filter.