31results about How to "Green treatment" patented technology

The invention provides a device and method for capturing and recovering carbon dioxide in flue gas. The device comprises a flue gas treatment system, a first membrane separation unit, a second membrane separation unit and a high-pressure energy recovery device, wherein the flue gas treatment system is provided with a treatment inlet and a treatment outlet and used for treating the flue gas; the first membrane separation unit is provided with a first gas inlet, a first carbon dioxide enriched gas outlet and a first high-pressure impermeable gas outlet, and the first gas inlet is connected withthe treatment outlet; the second membrane separation unit is provided with a second gas inlet, a carbon dioxide product gas outlet and a second high-pressure impermeable gas outlet, and the second gasinlet is connected with the first carbon dioxide enriched gas outlet; the high-pressure energy recovery device is connected with the first high-pressure impermeable gas outlet and used for recoveringpressure energy of the high-pressure gas produced by the first high-pressure impermeable gas outlet. The device provided by the invention can capture CO2 in recovered flue gas more effectively.

The invention belongs to the field of chemical synthesis and discloses a synthesis method for 4-S-5-Br-2',3',5'-O-triacetyluridine. The synthesis method comprises the steps that a compound 5-Br-2',3',5'-O-triacetyluridine serves as a raw material, phosphorus pentasulfide and a Lawesson reagent are combined to serve as a vulcanization reagent, 1,4-dioxane serves as a solvent, and a chemical reaction is carried out to finally prepare the 4-S-5-Br-2',3',5'-O-triacetyluridine. The synthesis method for the 4-S-5-Br-2',3',5'-O-triacetyluridine has the advantages that the reaction time is shortened,and the vulcanization efficiency is greatly improved. The synthesis method reduces the cost, the treatment after the reaction is simple and convenient, and meanwhile the yield of the thionucleoside compound after the reaction is increased.

The invention relates to an electric coagulation decoloring method for printing and dyeing wastewater. The printing and dyeing wastewater with the chroma ranging from 500 time to 1400 times and an initial pH value ranging from 6.0 to 9.0 serves as electrolyte, an electrolysis decoloring reaction is conducted in a periodical reversing pulse electrolytic cell, wherein both the positive pole and the negative pole are aluminum plates. Two adjacent electrodes of the three electrodes form one electrolysis unit, the waste water flows into a water inlet of the electrolytic cell and flows through the electrolytic cell in a gallery flowing back mode. A certain electrode current density and bath voltage are controlled, the electrolysis HRT ranges from 15 minutes to 90 minutes, and the chroma of the processed wastewater is below 50-100 times. It is found through atomic absorption detection analysis that 91.12%-97.03% of dissolved aluminum of the two poles is enriched in deposited mud, and treatment cost of each ton of water ranges from 0.3 to 0.7. Chemical agents are not added in the whole coagulation treatment process, control is simple, and the method is economical and environment-friendly.

The invention discloses an application method of treated oil-based rock debris in an inorganic stable road base, which is characterized by comprising the following steps: (1), treating the oil-based rock debris by adopting a waste oil-based mud rock debris resource recovery technology LRET and a thermal analysis technology, and after the detection of various treated environmental indexes is qualified, standing by; (2), checking a subbase layer before a base layer is constructed, and removing pumice stones and sundries; (3), mixing the mixture according to the following mass ratio: 52% of gravel, 12% of sand, 3-5% of cement and 31-33% of oil-based rock debris; and (4), filling the mixture on the subbase layer in a layered manner and compacting the same to finally form the road base layer. The method can be used for harmless and resourceful treatment of the oil-based rock debris; the mixture can be used as an admixture of the road base layer, thus meeting the strength requirement of theroad base layer, and effectively reducing the cement consumption required in road construction and reducing the construction cost.

The invention relates to a method for recovering phosphoric acid by electrolyzing a mixed acid solution, belonging to the field of resource recovery. The method comprises the following steps: puttingthe mixed acid solution into a product tank, wherein the mixed acid solution comprises phosphoric acid, oxyacid and organic acid; and inputting the mixed acid solution in the product tank into an electrolytic cell for cyclic electrolysis, reducing the oxyacid at the cathode of the electrolytic cell, oxidizing the organic acid at the anode of the electrolytic cell, and collecting gas generated in the cyclic electrolysis process through a gas collecting device so as to recover phosphoric acid in the mixed acid solution. The oxyacid is preferably nitric acid, nitrous acid, perchloric acid or hypochlorous acid, and the organic acid is preferably acetic acid, oxalic acid or propionic acid. According to the invention, phosphoric acid recovered through electrolysis can reach 99% or above, the technological process of treatment is simple, environmental pollution caused by direct discharge of waste acid liquid can be avoided, the additional value of products is high, and good economic benefitsand environmental benefits are achieved.

The invention belongs to the field of environment protection and environment catalysis, and particularly relates to a non-metal-element doped modified titanium oxide catalyst used for photodegradation of household garbage leachate. The catalyst adopts household garbage pyrolysis gas as a non-metal source and a heat source to prepare the non-metal-element doped modified titanium oxide, and then the flat-plate type catalyst is prepared by mixing, rolling, coating, pleating, cutting, drying and calcinating. The catalyst is low in cost, high in photocatalytic activity, high in stability, and capable of efficiently degrading the household garbage leachate under irradiation of sun light and common lamplight, and has a good application prospect in the field of pollutant degradation.

The invention belongs to the field of environmental protection of offshore oil-gas fields and particularly provides a vertical distribution structure applicable to treatment of oil-containing drillings in offshore oil-gas development. The vertical distribution structure comprises three parts, namely a vertical hammer mill assembly, an electromagnetic heating system, a sealing and supporting system. The oil-containing drillings enters the vertical hammer mill assembly by a feeding channel, and a transmission shaft drives radial hammer mill blade and axial hammer mill blades to rotate, so that solid phases in the oil-containing drillings are continuously hammer-milled and crushed, further the hammer-milling heat is generated, and the oil-liquid diffusion distance is reduced; simultaneously,due to the electromagnetic heating system, the temperature of a vertical hammer-mill drum body is increased, so that under the compounding action of hammer-milling heat and electromagnetic heating, the oil liquid in the oil-containing drillings is vaporized and separated; a heat-insulating layer wrapping outside the vertical hammer-mill drum body can inhibit heat loss effectively. The vertical distribution structure provided by the invention solves the defects and shortages of other structures well, has the advantages of small occupied area, high treatment efficiency and low energy consumption, high-efficiency and safe treatment of the oil-containing drillings are realized and the environmental protection requirements of green development of the offshore oil-gas development is met.

The invention discloses an expanded graphite electrode used for electrochemical removal of heavy metal ions in waste water, a preparation method and application thereof. First, the graphite paper was cut to a suitable size, ultrasonically cleaned in acid, alkali and ultrapure water for one hour each, and then dried. Then, soak the pretreated graphite paper in liquid nitrogen for 5-30min, and then quickly immerse the frozen graphite paper into the ethanol solution. At room temperature, liquid nitrogen molecules vaporize rapidly, and instantly expand in the graphite paper sheet to expand the graphite paper into three-dimensional expanded graphite. Furthermore, the expanded graphite was calcined at 700° C. for 1 h, and ultrasonicated in ethanol for 30 minutes. Finally, it is used as an electrode after being rinsed with a large amount of ultrapure water and dried. The obtained three-dimensional expanded graphite electrode has good conductivity, and heavy metal ions in wastewater can be efficiently removed by electrochemical reduction.

The invention discloses a method for producing edible food packaging paper with soybean hull as a raw material. The method comprises the following steps: the soybean hulls are subject to superfine comminution, are treated by pressurization for 20 minutes to 2 hours under the pressure of between 130 and 320kPa, and are cooled; an enzymatic reaction is performed under the conditions that the mass concentration of soybean hull powder is between 1 and 25 percent, the mass ratio of cellulose to the soybean hull powder is between 0.1 to 1 and 10 to 1, the temperature is between 25 and 70 DEG C, andthe rotating speed is between 50 and 350rpm; the reaction is terminated when the hydrolysis degree of the reaction reaches between 5 and 20 percent; a filtrate is vacuum concentrated and decolorized by hydrogen peroxide, and then a food thickener and a food plasticizer are added for stirring evenly; the ultrasonic degassing is performed for 30 to 120 minutes after the beating; the filtrate is placed into a mold for molding; and the edible food packaging paper is obtained through drying at a temperature of between 55 and 70 DEG C. The method has green raw material and chloride-free environment-friendly process, has no discharge of acid liquids or alkaline liquids, provides a new approach for the utilization of high added values of biomass resources, and also provides broad prospect for thedevelopment of special paper.

The invention relates to a method for treating organic ligands on the surfaces of gold clusters. According to the method, the surface stabilizer ligands of gold nanoparticles can be simply and efficiently treated in an environment-friendly manner, so that unsaturated coordination atoms on the surface stabilizer ligands of the gold nanoparticles are exposed, and the catalytic activity is greatly improved. The method mainly comprises the following steps of introducing water into a reactive atmosphere to activate Au-S bonds, and removing the organic ligands under a mild condition. The changes ofvibration peaks and absorption peaks before and after water treatment can be observed visibly in a Fourier infrared spectrum and an X-ray photoelectron spectrum, and these changes are matched with a result of DFT calculation.

The invention belongs to the field of chemical synthesis and discloses a method for synthesizing 4-S-5-Br-2', 3', 5'-O-triacetyluridine. The synthesis method uses compounds 5-Br-2', 3', 5'-O-triacetyluridine as raw materials, phosphorus pentasulfide and Lawesson's reagent are combined as sulfurization reagents, and 1,4-dioxane is used as solvent A chemical reaction occurs to finally prepare 4-S-5-Br-2', 3', 5'-O-triacetyluridine; 4-S-5-Br-2', 3', 5'-O-triacetyl uridine provided by the invention, The method for synthesizing 5'-O-triacetyluridine not only shortens the reaction time, but also greatly improves the vulcanization efficiency. The synthesis method provided by the invention reduces the cost, the post-reaction treatment is simple and convenient, and the yield of the reacted thionucleoside compounds is improved.

The invention relates to a method for treating phenol wastewater. The method comprises: (1) a step of vaporizing phenol waste water with heat energy provided by a solar concentrating heat collection device to form phenol water vapor; and (2) a step of electrolytically oxidizing the phenol water vapor with electric energy provided by a photovoltaic cell . The present invention realizes the degradation of vapor state phenol for the first time, and degrades phenol in the vapor phase to achieve an ideal degradation rate of phenol; in addition, the activated molecules in the excited state with high energy content can undergo less intermediate incomplete oxidation The products are oxidized to carbon dioxide and water with simultaneous production of hydrogen. The invention does not introduce any other form of energy during the electrolysis period, realizes the utilization of the full spectrum of solar energy, breaks the limitation of the traditional photovoltaic method on the utilization of sunlight, truly achieves the purpose of environmental friendliness, and realizes on the basis of energy saving The degradation of phenol wastewater is achieved, which provides a new direction for the green and efficient treatment of industrial organic wastewater.

The invention provides a leaching agent for oily drilling cuttings and oily drilling waste and its application method. The leaching agent comprises: 80-100 parts by volume of polyoxymethylene dimethyl ether, 0-20 parts by volume of methyl tert-butyl ether, and 0-20 parts by volume of petroleum ether. The method of using the leaching agent is as follows: mix oily drill cuttings and / or oily drilling waste with the leaching agent in a mixer; stir for a certain period of time at a certain shear rate for leaching, and let the solid phase settle naturally Finally, solid-liquid separation, after drying, oily drilling cuttings and / or oily drilling waste after deoiling treatment are obtained. The leaching agent of the present invention can simplify the treatment steps and cost of oily drilling cuttings / oily drilling waste, and after the oily drilling cuttings / oily drilling waste is treated, the content of oily substances can be effectively reduced and the oily substance content can be achieved to meet the discharge standard. Moreover, the leaching agent and emulsified diesel oil recovered by fractional distillation can be recycled, which greatly improves the recycling rate of oil-based drilling fluid and leaching agent.

The invention belongs to the field of environment protection and environment catalysis, and particularly relates to a non-metal-element doped modified titanium oxide catalyst used for photodegradation of household garbage leachate. The catalyst adopts household garbage pyrolysis gas as a non-metal source and a heat source to prepare the non-metal-element doped modified titanium oxide, and then the flat-plate type catalyst is prepared by mixing, rolling, coating, pleating, cutting, drying and calcinating. The catalyst is low in cost, high in photocatalytic activity, high in stability, and capable of efficiently degrading the household garbage leachate under irradiation of sun light and common lamplight, and has a good application prospect in the field of pollutant degradation.

The invention relates to denitrification acinetobacters and a use thereof, and belongs to the field of environmental microbiology. The denitrification acinetobacters have a category name of Acinetobacter schindleri LN5, are preserved in the China general microbiological culture collection center of the China microbiological preservation management committee on May 30th, 2012, and has a preservation number of CGMCC No.6165. The denitrification acinetobacters have heterotrophic nitrification-aerobic denitrification functions, have high aureomycin resistance, can be used for simultaneous nitrification and denitrification (SND) treatment on nitrogen-containing sewage and especially on nitrogen and aureomycin-containing sewage, realize removal of a large part of ammonia nitrogen in nitrogen-containing sewage, realize small accumulation amounts of nitrite and nitrate nitrogen, realize nitrification-denitrification and COD removal in the same reactor, and realize environmentally-friendly, low-consumption and high-efficiency treatment on nitrogen-containing sewage.

The invention discloses a cooperative filling method for gangue slurry pipelines in a coal mining face. The method comprises: drilling adjacent grouting holes on the side of a coal pillar in an auxiliary transportation roadway at the same distance, and lowering the adjacent grouting pipes, Then install a tee joint at the adjacent grouting pipe on the coal pillar side of the auxiliary roadway to connect the low-level grouting pipe on the pipe hook on the coal pillar side of the auxiliary roadway; as the coal mining face advances, use the adjacent grouting pipe to The advanced adjacent grouting is carried out in the mined-out area of ​​the working face, and the lagging low-level grouting is carried out in the gob area of ​​the working face by using the low-level grouting pipe. The invention can efficiently, greenly and cost-effectively fill the gangue into the goaf without affecting the normal production of the coal mine.

The present invention provides preparation process of nanometer RE fluoride particle. Alcohol solution of RE compound is dispersed in fluorine-containing ionic liquid, and the ionic liquid is heated to decompose and to produce fluorine ion combined with RE ion, so as to prepare great amount of nanometer RE fluoride particles in homogeneous shape. The prepared nanometer particles have size of 50-200 nm and may find wide application in biology, catalyst, lubricant, analysis, optics and other fields. The present invention completes reaction in a green solvent system, and is environment friendly.