48results about How to "Solve the three wastes problem" patented technology

The present invention relates to a microbial fermentation agent for treating waste alcohol liquid of sugar refinery and alcohol plant and it is a kind of bacillus and named WH colony. It is used to treat waste alcohol liquid and waste alcohol liquid and filtered mud is used as the second-stage culture medium, third-stage culture medium and carrier for WH colony. The fermented filtered mud is usedas material for producing organic fertilizer. The present invention has low cost and short technological process, and makes it possible to solve the problem of environment protection while increasingbenefit.

The invention discloses a method for preparing rutile type titanium dioxide by using ilmenite as a raw material. The method comprises the steps of grinding ilmenite, calcining, extracting, freezing to remove iron, concentrating titaniferous solution, hydrolyzing titaniferous solution, rinsing, treating with salt and calcining. The method has the beneficial effects that: (1) high equipment cost generated by using high-concentration sulfuric acid is reduced by means of the process; (2) temperature for calcining is reduced by adding potassium pyrosulfate, and the extraction rate of titanium dioxide is greatly improved; (3) ammonium sulfate is generated from ammonia generated in calcining and waste acid generated in hydrolyzing and is recycled, the important problem of 'three wastes' is solved, and environmental friendliness is achieved; (4) a proper amount of rutile seed crystal is added under a certain condition in the hydrolyzing process, the yield of rutile type titanium dioxide is greatly increased; and (5) the temperature of crystal form transformation is reduced, rutile type crystal phase transformation can be obtained at 110 DEG C, and the calcining time is shortened to 2 hours.

The invention relates to a kind of Chinese traditional medicine that can decrease the saccharide content and tonify kidney with the total lignanoid extracts from arctii. The content of the total lignanoid extracts from the arctii is 50-89%, the content of the main active ingredient (arctiin) is more than 30%. Using the valid total lignanoid as the material, the producers can prepare different per oral preparations. The advantages of the invention includes: 1. the invention can decrease the blood sugar substantially, it can prevent the damage to kidney because of hyperglycemia, it can even treat the early kidney damage; 2. the preparing method is safe and simple.

The invention relates to a method for preparing broad-spectrum antibiotic chloramphenicol. In the method, benzaldehyde and 2-nitroethyl alcohol are taken as raw materials; (1R, 2R)-2-nitro-1-phenyl-1,3-propanediol is obtained through synthesizing the raw materials under the presence of a chiral catalyst; (1R, 2R)-2-amino-1-phenyl-1,3-propanediol is obtained through hydrogenization to reduce; and the chloramphenicol is obtained through carrying out nitrification and dichloro-acetylation on the intermediate. With the adoption of the method provided by the invention, the chiral separation and the reduction of aluminum isopropoxide which are commonly used in industry nowadays can be avoided, the three wastes are reduced, the raw materials and reagents are cheap and easy to get, the synthetic steps are little, the yield is high, and thus, the method is more suitable for industrial production.

The invention relates to a method for HCI hydrochloric acid gas recovery in the process of producing benzene sulfone chloride; based on the planar absorption apparatus, the prior positive pressure chlorosulfonation is changed into a bleed chlorosulfonation by adding a water pump and a circulation water tank at the end of tail gas, so that the pressure inside a reaction kettle and a pipeline can be reduced; the unabsorbed HCI tail gas is completely absorbed by the water pump cyclically through implementing a circulation absorption technology in the state of negative pressure. The invention has the advantages that the HCI gas which is generated in the process of sulphonation can be absorbed cyclically by adopting the negative pressure reactivity, so the smoky HCI gas in the air is removed; based on the planar absorption apparatus, the water pump and the circulation tank are added for implementing the circulation absorption under the state of negative pressure, when the absorbed concentration reaches 31% (the specific gravity is up to 1.155 which is measured by a hydrometer), the reclamation can be implemented; the invention can be used in manufacturing the products of rubber strengthening agent white black carbon so as to improve the economic benefit; the invention also can be better to solve the problem in environmental protection.

The invention relates to a method for synthesizing a broad spectrum antibiotic, namely, chloramphenicol. The method comprises the following steps of: synthesizing (1R,2R)-2-nitro-1-(4-chlorophenyl)-1,3-propanediol by using 4-chlorobenzaldehyde and 2-nitroethylalcohol as raw materials in the presence of a chiral catalyst, and performing catalytic hydrogenation to obtain (1R,2R)-2-amino-1-(4-chlorophenyl)-1,3-propanediol; and performing dichloro acetylization and nitro substitution on the intermediate to obtain the chloramphenicol. By the method, the common chiral resolution and aluminum isopropoxide reduction in the industry at present can be avoided, three wastes are reduced, and the raw materials and reagents are cheap and readily available; 4-chlorobenzaldehyde is selected as a raw material, nitro substitution is adopted, and the generation of byproducts in nitration reaction is reduced; moreover, the method comprises a few synthesizing steps, the yield is high, and the method is more suitable for industrial production.

The electroplating sludge treating and utilizing process includes the following steps: 1. adding alkali to stoved electroplating sludge, roasting, leaching out soluble metal in dilute alkali solution, and filtering to obtain alkali leached slag and alkali leached liquid; 2. adding acid to the alkali leached liquid, filtering to obtain hydrolyzed slag and hydrolyzed liquid, and preparing bichromate with the hydrolyzed liquid; and 3. dissolving the alkali leached slag in acid solution, filtering, electrodepositing the filtrate and filtering to obtain electrodeposited solution, depurating the electrodeposited solution and crystallizing to obtain nickel salt. The process has low power consumption and low cost, and can convert most of Cr, Cu and Ni in electroplating sludge into bichromate, nickel salt, copper powder and other side product.

The invention provides a steel pipe inner and outer plastic dipping production system. The steel pipe inner and outer plastic dipping production system comprises a steel pipe inner wall feeding device(1), a first steel pipe fixing device (2), a steel pipe outer wall feeding device (3), a second steel pipe fixing device (4) and a base (5), wherein the first steel pipe fixing device (2) and the second steel pipe fixing device (4) are arranged at two opposite ends of the base (5) respectively, the first steel pipe fixing device (2)and the second steel pipe fixing device (4) clamp the steel pipesin the length direction of the steel pipes; the steel pipe inner wall feeding device (1) is inserted into the steel pipes (6) to dip the inner walls of the steel pipes(6); the steel pipe outer wall feeding device (3) is located above the first steel pipe fixing device (2) and the second steel pipe fixing device (4), and the outer walls of the steel pipes are subjected to plastic dipping. The system has the advantages that the construction time is short, and the utilization rate of the plastic dipping material is high.

The invention discloses a solid waste reutilization technique in BIT (1,2-benzoisothiazolyl-3-one) production, which comprises the following steps: mixing solid waste in BIT product with a solvent, and adding an acylation reagent while keeping the temperature at 0-60 DEG C to continuously release gas; while keeping the temperature at 20-30 DEG C, adding ammonia gas, ammonia water or ammonium chloride until the pH value is 9, and keeping the temperature at 30-80 DEG C for 3 hours; and adding water, introducing chlorine gas, heating to 50-90 DEG C, filtering out the solid, distilling the filtrate to recover the solvent, dissolving the solid in alkali, adding activated carbon for decolorization, filtering, regulating the pH value to 2-5 with hydrochloric acid, precipitating the solid, and centrifuging to obtain the solid. The technique analyzes the variety of byproducts in the solid residue and the specific chemical structure of each coproduct after the final solvent recovery in the existing BIT production technique, calculates the main components in all the byproducts, and provides a synthesis route according to the main components.

The invention relates to a novel oxidation method for synthesis of a histamine H1 receptor antagonist--alcaftadine. According to the method, sodium hypochlorite / TEMPO is used as oxidation reagents for oxidation of an intermediate, i.e., 6,11-dihydro-11-(1-methyl-4-piperidylidene)-5H-imidazo[2,1-b][3]benzazepine-3-methanol, so alcaftadine is prepared. The method provided by the invention has the advantages of simplified operation, environment-friendly process, usage of cheap and easily-available raw materials and reagents, high yield and applicability to industrial production.

The invention relates to a method for synthesizing a broad spectrum antibiotic, namely, chloramphenicol. The method comprises the following steps of: synthesizing (1R,2R)-2-nitro-1-(4-chlorophenyl)-1,3-propanediol by using 4-chlorobenzaldehyde and 2-nitroethylalcohol as raw materials in the presence of a chiral catalyst, and performing catalytic hydrogenation to obtain (1R,2R)-2-amino-1-(4-chlorophenyl)-1,3-propanediol; and performing dichloro acetylization and nitro substitution on the intermediate to obtain the chloramphenicol. By the method, the common chiral resolution and aluminum isopropoxide reduction in the industry at present can be avoided, three wastes are reduced, and the raw materials and reagents are cheap and readily available; 4-chlorobenzaldehyde is selected as a raw material, nitro substitution is adopted, and the generation of byproducts in nitration reaction is reduced; moreover, the method comprises a few synthesizing steps, the yield is high, and the method is more suitable for industrial production.

The invention relates to a method for preparing broad-spectrum antibiotic chloramphenicol. In the method, benzaldehyde and 2-nitroethyl alcohol are taken as raw materials; (1R, 2R)-2-nitro-1-phenyl-1,3-propanediol is obtained through synthesizing the raw materials under the presence of a chiral catalyst; (1R, 2R)-2-amino-1-phenyl-1,3-propanediol is obtained through hydrogenization to reduce; and the chloramphenicol is obtained through carrying out nitrification and dichloro-acetylation on the intermediate. With the adoption of the method provided by the invention, the chiral separation and the reduction of aluminum isopropoxide which are commonly used in industry nowadays can be avoided, the three wastes are reduced, the raw materials and reagents are cheap and easy to get, the synthetic steps are little, the yield is high, and thus, the method is more suitable for industrial production.

The invention relates to a novel oxidation method for preparing a histamine H1 receptor antagonist--alcaftadine. The method comprises the step of using a Dess-Martin periodinane as an oxidation reagent to oxidize an intermediate--6,11-dihydro-11-(1-methyl-4-piperidylidene)-5H-imidazo[2,1-b][3]benzazepine-3- methanol so as to obtain the alcaftadine. The novel oxidation method for preparing the alcaftadine is simplified and has the advantages of simple operation, environment-friendly process, cheap and easily-available raw materials and reagents, high yield and more applicability to industrial production.