19 results about "Chemical industry" patented technology

The invention discloses a hexavalent-chromium wastewater treatment technology. The hexavalent-chromium wastewater treatment technology includes the steps that hexavalent chromium in wastewater is reduced to trivalent chromic ions through sodium hydrogen sulfite with the oxidation-reduction method, the PH value is adjusted, and trivalent chromium forms chromic hydroxide to be removed in a precipitation method accordingly. Compared with other treatment methods, the method is low in device investment and operating cost, easy to operate and suitable for hexavalent-chromium wastewater treatment of the electroplating industry, the printing and dyeing industry, the pharmaceutical industry, the light and textile industry, the chemical industry and the like, wastewater is sustainably treated on the spot, and pollution of the industry to the environment is reduced; meanwhile, the economic benefits of enterprises are increased, and the win-win effect is achieved.

The invention discloses a polymeric titanium sulfate-PDMDAAC (poly dimethyl diallyl ammonium chloride) composite coagulant as well as preparation and application methods thereof. The preparation method comprises the following steps: 1, preparing a titanium sulfate solution with certain concentration by adding water, placing the titanium sulfate solution in a mixing kettle, dropwise adding a sodium hydroxide solution by controlling certain speed, performing polymerization reaction, stopping adding the materials when the basicity (B) is 0.5-2.5, and continuously stirring for 0.5-1.5h after finishing adding, so as to prepare a colorless and transparent polymeric titanium sulfate solution; 2, placing the prepared polymeric titanium sulfate solution in a mixing reaction kettle, matching according to the fact that the mass ratio of Ti to PDMDAAC is (4-10):1, adding branched-chain PDMDAAC colloid or dry powder under the normal temperature or heating condition; 3, stirring the mixed solution at the normal temperature for 2-4 h, and filtering away insoluble substances, so as to obtain the polymeric titanium sulfate-PDMDAAC inorganic composite coagulant and polymeric titanium sulfate-PDMDAAC organic composite coagulant. The polymeric titanium sulfate-PDMDAAC composite coagulant can be widely applied to fields such as water supply, waste water treatment, papermaking, textile dyeing and printing, and daily-use chemical industry, and has good water treatment effect.

The invention provides a mineral separation and enrichment method for a primary scandium ore. The method comprises the steps of crushing, ore grinding, low-intensity magnetic separation, high-intensity magnetic roughing and scavenging, concentrate regrinding, high-intensity magnetic concentration and the like. A scandium concentrate obtained by using the method disclosed by the invention is subjected to wet-metallurgy scandium extraction, so that the scandium ore resource becomes a developable and utilizable resource, the production efficiency of wet-process scandium extraction can be effectively increased, the consumption of various auxiliary materials such as acid and alkaline required by wet-process scandium extraction and the production cost can be remarkably reduced, and environment pollution caused by a wet-process scandium extraction process is reduced. Meanwhile, the produced tailings can be recycled in the industries such as building materials, the chemical industry, ceramics and glass, so that the comprehensive recycling value of the resource is increased, and the ecological and environment protection influences caused by tailing accumulation and storage are reduced.

The invention discloses a chemical industry mechanical stirrer based on paddle wing barbs for organic silica gel. The chemical industry mechanical stirrer structurally comprises a gear box, a shaft driving motor, a conveying wheel belt, a cover balancing weight, a propeller stirring tank groove, a hydraulic cylinder rod and a material loading cylinder groove. According to the invention, the propeller stirring tank groove is matched with the material loading cylinder groove, so that the hook end block and the barb corn bending plate are matched to work to form linear rotary wire drawing; by matching with the twisting and hinging operation of the propeller, the granular sensation and the forming quality of the whole treated organic silica gel are high, the whole small fragments are uniform,the effect of rotary wire drawing is achieved, centripetal force operation is diffused, and the rotary floating action effect of the wire edge is formed; and the annular cutting effect is achieved through the bent knife supporting rod frame on the edge, so that the sealed rotary work of the isolation cover at the cap end of the axis rod is also guaranteed, the work rotary stirring efficiency is continuously guaranteed, the smooth annular track machining effect of chemical industry machinery is driven, and the high-performance machining effect of bottom loss is achieved along the inner tank barrel structure.

The invention relates to the field of chemical industry, and particularly relates to a desulfurization additive as well as applications and a using method of the same. The desulfurization additive contains the following raw materials in parts by weight: 30-40 parts of accelerant, 50-60 parts of activator and 5-15 parts of catalyst. The desulfurization additive can be used in a wet-process flue gas desulfurization technology of limestone or limestone gypsum. The using method of the desulfurization additive comprises the steps of: adding the desulfurization additive in a circulation loop of a limestone wet-process desulfurization circulation system; stirring; and adding the desulfurization additive by a set frequency. The desulfurization additive is capable of enhancing the reaction rate of desulfurization.

The invention provides a nylon enhanced rubber conveyer belt, comprising the following components in parts by weight: 60-90 parts of rubber, 10-50 parts of nylon, 2-5 parts of vulcanizator, 1-8 parts of promoter, 20-180 parts of filler, 10-20 parts of softener and 1-1.5 parts of antiager. The rubber and the nylon are used as base materials, are added with a certain amount of compounding agent and paster to change the physical and mechanical properties of the rubber and the nylon, and finally are prepared into the product in the invention by a special production process, thus solving the deficiencies of poor wear resistance, short application life, complicated replacement and the like of the existing conveyer belt. The invention has bright appearance, superior oil-resistant, ageing resistant, wear resistant, acid-base resistant and scratch resistant properties as compared with the pure rubber products and wool materials, and excellent physical, chemical and mechanical prosperities. The invention can be applicable to the posttreatment production line of textile machinery, is suitable for various fields requiring heat resistant and wear resistant production, and can be widely used in high temperature conveying occasions such as textile industry, cremation industry, mining industry, metallurgical chemical industry and the like.

The invention discloses a high-temperature melt granulation smelting furnace which comprises a metal shell, wherein the metal shell is sealed by a heating furnace closed cover. The high-temperature melt granulation smelting furnace is characterized in that a partition plate is arranged in the metal shell, the inside of the metal shell is divided into an upper box and a lower box by the partition plate, a center through hole is formed in the partition plate, a crucible is placed on the partition plate and provided with a funnel-shaped bottom, a discharging hole is formed in the bottom of the crucible, the bottom of the crucible penetrates the center through hole and is inserted into the lower box, a heat insulation layer is arranged between the wall of the crucible and the inner wall of the metal shell, a discharging port is formed in the bottom of the metal shell and corresponds to the discharging hole, a through hole is formed in the heating furnace closed cover, one end of a lifting bar penetrates the through hole and is inserted into the crucible, the discharging hole is plugged, the other end of the lifting bar is arranged outside the heating furnace closed cover and is connected with a rotating wheel through a connecting rod, and a vacuum pumping pipe, an air inflation pipe and an exhaust pipe are arranged in the metal shell. The high-temperature melt granulation smelting furnace can generate high-temperature molten particles meeting requirements and can be widely applied to the fields of chemical industries, steel and the like.

Fire ion detector (ZVD) is made of natural quartz, rare earth, yttrium, iridium, ruthenium, calcium, zirconium, iridium, titanium, nickel, palladium, platinum, manganese, etc. detectors of different specifications. A is the tube wall, A1, A2, G is the electrode coating, A3 is the electronic chamber particle and electronic area; B is the temperature sensor; C is the quartz body; D is the air duct; E is the insulation layer; F is the heating resistance layer ; G electron oscillation area; G1 jet port electron emission area; LI, L2 are heating power supply terminals; M is constant temperature electronic block; H1, H3 are signal output terminals; H2 polarized pole; J is air inlet; Composition, stable work and high precision. It can detect trace amounts of hydrogen and organic gases, etc., and the detection limit can be as low as 0.1ppb. It is suitable for the analysis of environmental protection, gas, chemical, nuclear energy and other industries. The detector does not need combustion gas and combustion-supporting gas, and the carrier gas can be nitrogen or inert gas.

The invention provides a modified melamine monomer, a melamine resin, and melamine foams prepared by using the melamine resin. The invention further provides a method for preparing the modified melamine monomer and a method for preparing the melamine foams. The melamine foam has the advantages of high toughness, high strength, scaling-off difficulty, low formaldehyde content and the like and can be applied to various fields such as daily chemical industry, food industry, electron industry, interior trim, transportation and the like on a large scale. The modified melamine monomer has a following general formula, wherein the structural formula is as shown in the specification, n is 2-10, and R1 and R2 are respectively and independently selected from H, CH3 and CH2CH3.

The invention relates to the technical field of chemical industry and particularly relates to a method for producing pmida. The method comprises the following steps: mixing iminodiacetonitrile and an acid catalyst with water, stirring, heating, controlling the temperature within 40-60 DEG C, adding the mixed liquor of phosphorous acid, ammonium chloride, hydrochloric acid and iminodiacetic acid hydrochloride within 30-60 minutes, adding paraformaldehyde at a temperature not lower than 100 DEG C, reacting for 3-8 hours in a heat preservation manner to obtain pmida suspension, and cooling, filtering, washing and drying the suspension to prepare the pmida. The purpose of the invention is to provide a method for producing pmida, which is simple to operate, high in product yield and small in pollution.

The invention discloses a method for preparing an iguratimod intermediate IV, which belongs to the technical field of medicine and chemical industry. The present invention replaces nitrobenzene with nitromethane as the preparation of Alamod intermediate IV (α-amino-2-methoxy-4-methanesulfonamido-5-phenoxyacetophenone hydrochloride ) solvent, the weight yield of the prepared Alamod intermediate IV can reach 102~105%, and the purity can reach more than 99%; in addition, the present invention adopts nitromethane as the solvent of reaction and also has the following advantages: weak smell , less pollution, less harm to the human body, easy post-processing of the product, improved purity, and no genotoxic impurity nitrobenzene residue in the final product.

The invention discloses a chemical industry raw material placing barrel, and relates to the technical field of chemical industry equipment casting. The chemical industry raw material placing barrel is characterized by comprising, by weight, 71-93% of Fe2O3, 25-39% of vanadium, 15-25% of a sodium chloride solution, 5-15% of calcium carbonate, 1.5-4.5% of p-toluenesulfonic acid, 12.5-21.5% of a methane coupling agent KH-550, and 22-30% of modified sodium silicate sand. According to the present invention, the method is reasonable, the operation is easy, and the chemical properties of the product are excellent.

The invention relates to a processing machine for foods, subsidiary agricultural products, pharmaceutical industry, chemical industry and mining and metallurgy, in particular to a multifunctional integrated machine capable of kneading, twisting, grinding, milling, striking, smashing and squeezing to achieve the purposes of refining, disintegrating, briquetting, generating flexibility, separating, filtering and extracting. The machine comprises a stand, a U-shaped groove body, a (-shaped groove, a shaft, a support, hammers, a gear set, a charging opening, a discharging opening, a control valve, a motor-driven system, an electric control component and the like. A double-operating device capable of simulating manual operation is adopted to form a special high-efficiency pattern of multi-groove and multi-hammer operation, thereby being favorable for emancipating the productive forces and improving the operating efficiency and the product efficiency.

The invention relates to the field of chemical industry, and in particular relates to an external-pressure resistant carbon fiber high-pressure pipe. The external-pressure resistant carbon fiber high-pressure pipe comprises the following glue preparation raw materials in parts by weight: 1800-2000 parts of bisphenol A diglycidyl ether, 170-200 parts of trimethylolpropane glycidyl ether 6360, 1700 parts of methyl tetrahydrophthalic anhydride and 12-15 parts of 2,4,6-tris(dimethylaminomethyl)phenol. The external-pressure resistant carbon fiber high-pressure pip is prepared by the following steps of: fully and uniformly stirring the raw materials for later use; preparing the raw materials and placing the raw materials in a glue tank of a winding machine for later use; soaking carbon fibers in the glue tank, and preparing a product on the winding machine; and solidifying and heating the product, which concretely comprises the following steps of: raising the temperature to 60 DEG C from room temperature and keeping warm for 3 hours; raising the temperature to 100 DEG C and keeping warm for 3 hours; raising the temperature to 140 DEG C and keeping warm for 2 hours; raising the temperature to 160 DEG C and keeping warm for 4 hours; then naturally cooling the product until the difference between the product temperature and the external temperature is within the range of 10 DEG C, and taking out the product; and then standing the product for 200 hours at normal temperature.

The invention discloses a foam hand sanitizer taking a coriander extract as a fishy smell removing component and a preparation method of the foam hand sanitizer, relates to a detergent in daily chemical industry, and solves the problem that the existing hand sanitizer is difficult to effectively remove fishy smell of marine products such as fishes, shrimps, crabs and the like remained on hands. The foam hand sanitizer taking the coriander extract as the fishy smell removing component comprises the following components in percentage by mass: 0.1-40% of the coriander extract, 1-10% of an anionic surfactant, 0-10% of a nonionic surfactant, 1-10% of an ampholytic surfactant, 1-10% of a humectant, 0.1-1% of citric acid, 0.1-0.5% of tetrasodium glutamate diacetate, 0.1-0.5% of a preservative and the balance of deionized water. The foam hand sanitizer with the coriander extract as the fishy smell removing component can efficiently remove the fishy smell of hands, moisturizes and protects the hands, and is healthy and safe.