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572results about How to "Reduce environmental costs" patented technology

Process for producing methane by dry-type fermentation of stalks

The invention provides a technique for producing biogas by utilizing stalk dry fermentation which includes the steps: I, cracking the stalks into 2 to 8mm by a cracking machine; II, transmitting the cracked stalks into a pre-treatment pool, adding hot water of 40 to 53 DEG C and a stalk fermentation agent in the pre-treatment pool to carry out pre-treatment; the cracked stalks and the biogas slurry refluxed by the anaerobic digester of the pre-treatment pool are mixed according to a proportion of 2 to 1; after stirring, the solid content rate of the stalk liquid is 20 to 35 percent; III, using a mud pump to equally transmit the stalk liquid to the top part of the anaerobic digester with a fermentation temperature of 40 to 53 DEG C; IV, the biogas generated by fermentation is purified to be clean fuel by gas-liquid separation. The technique can lead the stalks of 1.5kg to generate the biogas of 1m<3> (the content of methane is larger or equal to 55 percent); the degrading rate is more than 90 percent. The technique of the invention can continuously feed and discharge; the biogas slurry can be repeatedly used; only biogas slag is discharged; the biogas slag is manufactured into organic fertilizer by processing and can not cause any pollution to the environment.
Owner:HENAN FUCHENG ECOLOGICAL ENERGY TECH

Intelligent control system and method based on combination of mechanical three-dimensional parking lot and AGV

The invention relates to an intelligent control system and method based on combination of a mechanical three-dimensional parking lot and an AGV. The system comprises a dispatching server, the AGV, a double-layer garage carport control device and vehicle guidance marks laid on a driving channel in the mechanical three-dimensional parking lot. The dispatching server is connected with the double-layer garage carport control device in a wired communication mode to achieve a function of vertical and horizontal movement control of double-layer garage carports; and the dispatching server is connected with the AGV in a wireless communication mode. According to the intelligent control system and method based on combination of the mechanical three-dimensional parking lot and the AGV, by the relay matching of the double-layer garage carport control device and the AGV, a convenient vehicle storage and taking function is achieved under the control of the dispatching server, not only is vehicle taking time effectively shortened for car owners, but also indoor exhaust pollution caused by the fact that the car owners drive vehicles in the parking lot for a long time to look for the carports can be avoided fundamentally, and the environmental protection cost is reduced.
Owner:SHENZHEN PUZHILIANKE ROBOT TECH CO LTD

Mineral processing technology by utilizing grade difference of potassium feldspar

The invention relates to a mineral processing technology by utilizing the grade difference of potassium feldspar. The mineral processing technology comprises the following steps that (1), potassium feldspar raw ore is mined and sorted in a separated mode according to the three classes of low-grade potassium feldspar ore, medium-grade potassium feldspar ore and high-grade potassium feldspar ore; (2), the mineral processing processes of crushing, washing, grinding for grading, desliming, and magnetic separation for deep iron removal are carried out on the low-grade potassium feldspar ore; (3), the mineral processing processes of crushing, washing, grinding for grading, desliming, flotation for mica removal and iron removal, flotation for separating feldspar from quartz, and magnetic separation for deep iron removal are carried out on the medium-grade potassium feldspar ore; (4), the mineral processing processes of crushing, washing, grinding for grading, desliming, magnetic separation for deep iron removal, wet superfine grinding and screening are carried out on the high-grade potassium feldspar ore. The different mineral processing technical schemes are adopted for the potassium feldspar ore of different grades, and the purposes of being free of environmental pollution, simplifying the production processes and efficiently developing and utilizing resources are achieved.
Owner:ZHENGZHOU MINERALS COMPOSITIVE UTILIZATION RES INST CHINESE GEOLOGICAL ACAD

Fish scale and fish skin collagen active peptide manufacturing technology

InactiveCN103352066AImprove extraction efficiencyReduce production cost and environmental protection costFermentationEngineeringElectrodialysis
The invention discloses a fish scale and fish skin collagen active peptide manufacturing technology and belongs to the field of biotechnology. The manufacturing technology comprises the following steps: (1), pre-processing fish scale and fish skin; (2), extracting collagen polypeptide through a method of combining acid extraction method and a heat extraction method, with the extraction yield over 95%; (3), purifying collagen polypeptide extract; (4), concentrating collagen polypeptide solution; (5), preparing collagen bioactive peptide solution through an enzymic method; (6), drying the solution to obtain a finished product of collagen bioactive peptide powder with the total nitrogen content higher than 14% and the relative molecular mass smaller than 10kD. In the technology, marine fish residual wastes are fully utilized, wastes are changed into valuable, and a new way of developing and utilizing sea residual wastes with high values is developed; a separation technology system integrating a centrifugal machine technology and an electrodialysis technology is established, and the purpose of separating excess acid and collagen bioactive peptide and recycling recovered acid is realized, so that the manufacturing cost and the cost of environmental protection are reduced remarkably; the produced collagen bioactive peptide is high in total nitrogen content, high in security, high in biological activity and low in average relative molecular mass.
Owner:THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION

Process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas

The present invention provides a process and system for waste heat grading cyclic utilization and pollutant emission reduction of sintering flue gas, in which the sintering flue gas is divided into low-temperature, high-oxygen, low-humidity section sintering flue gas; middle-temperature, low-oxygen, high-humidity section sintering flue gas; and high-temperature, high-oxygen, low-humidity section sintering flue gas according to the emission characteristics of temperature, oxygen content and humidity of the flue gas. The low-temperature, high-oxygen, low-humidity section sintering flue gas is led into the sintering machine for hot air ignition and hot air sintering; the middle-temperature, low-oxygen, high-humidity section sintering flue gas is subjected to dust removal and desulfurization treatments; the high-temperature, high-oxygen, low-humidity section sintering flue gas is mixed with exhaust gas of a cooler and then is led into the sintering machine for hot air sintering. The present invention can conduct grading utilization to the flue gas and recycle low-temperature sensible heat in flue gas, making the carbon monoxide left in the sintering flue gas burn again and thus saving energy consumption in the sintering process, on the premise that the quality and yield of the sintered ores are ensured. The present invention can also conduct cyclic utilization to the flue gas and thereby reduce pollutant emissions and the total emissions of sintering flue gas per unit of the sintered ores. Thus, the present invention has a very high value on energy saving and emission reduction.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI +1

Method for utilizing comprehensive resource of sulfur-containing solid waste

The invention discloses a method for utilizing comprehensive resource of sulfur-containing solid waste, which comprises the following steps: (1) pyrolyzing sulfurous iron ore to obtain pyrrhotite and an elemental sulfur product; (2) mixing the pyrrhotite, a carbon-containing substance and a calcium-containing substance to carry out reduction reaction under a high temperature to obtain a solid mixture of elemental iron and calcium sulfide; (3) magnetically separating the solid mixture, and separating and recovering the solid mixture to obtain the elemental iron; (4) mixing and heating the solid containing the calcium sulfide and dehydrated gypsum to obtain tail gas containing SO2 and solid containing calcium oxide; and (5) separating the tail gas containing the SO2 through liquefying to obtain a liquid SO2 product, and using the solid containing the calcium oxide as the calcium-containing substance to participate in the reaction of the step (2) and as flue gas desulfurizing agent for cyclically utilization. The method solves the problems of occupied floor due to the stacking of desulfurization gypsum and coal washing sulfurous iron ore, environment pollution and potential safety hazard, makes full use of calcium, sulfur and iron resources rich in the wastes, and can realize recycling economy and clean production.
Owner:HUAZHONG UNIV OF SCI & TECH

Sludge treatment and disposal system and method

The invention discloses a sludge treatment and disposal system, which is used for conveying dewatered sludge discharged by a sludge plant to a coal fired power plant to be combusted in a blended way after the dewatered sludge is dried. The sludge treatment and disposal system comprises a wet sludge storage bin, a sludge dryer, a sludge feeding pump, a cyclone dust collector, a dried sludge storage bin, dried sludge conveying equipment and a draught fan. The sludge feeding pump is respectively connected with the wet sludge storage bin and the sludge dryer. The cyclone dust collector is communicated with the sludge dryer so as to perform gas-solid separation on dried sludge and waste gas of the dryer. The dried sludge storage bin is connected with the cyclone dust collector so as to receivethe separated dried sludge. The dried sludge conveying equipment is connected with the dried sludge storage bin and used for conveying the dried sludge to a coaling system of the coal fired power plant. The draught fan is connected with a waste gas hole of the cyclone dust collector. According to the sludge treatment and disposal system disclosed by the invention, the sludge treatment and disposal cost can be effectively reduced; vast high-quality resources can be saved; and a way of using waste to treat waste is realized. The invention further discloses a sludge treatment and disposal method.
Owner:国能朗新明环保科技有限公司

Production process for fish scale collagen peptide calcium

The invention discloses a production process for fish scale collagen peptide calcium, and belongs to the technical field of biology. The production process comprises the following steps: (1) pretreating fish scale; (2) extracting fish scale collagen peptide and a calcium solution by an acid heat extraction technology; (3) preparing crude finished fish scale collagen peptide calcium by a peptide calcium chelating technology; (4) removing solid impurities by a centrifuge separation technology; (5) concentrating the fish scale collagen peptide calcium; (6) purifying the fish scale collagen peptide calcium by an anion exchange resin column chromatography technology to obtain a fish scale collagen peptide calcium solution; (7) drying the solution to obtain finished fish scale collagen peptide powder with the calcium content of greater than 1 percent and the protein content of greater than 85 percent. According to the process, fish scrap, namely fish scale, serves as a raw material; an exogenous calcium salt is not added; a separation and purification technology system integrated with the centrifuge separation technology and the anion exchange resin column chromatography technology is established, an organic solvent is not required to be used, the produced fish scale collagen peptide calcium product has high calcium content, high bioavailability and high safety; both the peptide and the calcium can be supplemented, so that the fish scale collagen peptide calcium has a great market prospect.
Owner:THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION

Method for comprehensively recycling lead and zinc containing blast furnace dust

The invention discloses a method for comprehensively recycling lead and zinc containing blast furnace dust and belongs to the technical field of iron and steel smelting. The method comprises the following steps: the step of batching: evenly mixing reclaimed lead and zinc containing blast furnace dust and a carbon powder agent according to the weight ratio of 10 to 1-3 to prepare pellets; the step of removing lead and zinc at a high temperature: adding the pellets into a rotary kiln from a kiln tail, spraying fuel from a kiln head to heat the pellets to reach the temperature of 900 to 1300 DEG C and smelting for 30 to 50 min, after smelting, discharging an obtained lead and zinc removed iron containing material from the kiln head and cooling to reach a normal temperature, and discharging dust and gas from the kiln tail; the step of lead and zinc dust recycling: collecting and sending the gas and the dust discharged from the kiln tail of the rotary kiln into a cyclone dust collector to obtain lead and zinc containing dust through catching, and externally discharging residual smoke; and the step of magnetic separation of an iron containing material: carrying out magnetic separation on the lead and zinc removed iron containing material so as to obtain iron ore concentrate and tailings. The method provided by the invention is characterized in that the process is simple, more than 90 percent of lead and zinc in the lead and zinc containing blast furnace dust can be effectively removed, iron containing dust, lead and zinc can be comprehensively recycled, and energy conservation and emission reduction can be achieved.
Owner:红河钢铁有限公司

Quenching and tempering device for cooling high-temperature fume

The invention discloses a quenching and tempering device for cooling high-temperature fume, comprising a two-fluid electrical appliance controller, a water path and an air path arranged between a high-temperature fume inlet and a high-temperature fume outlet. The device of the invention is characterized in that a low pressure pump is arranged in the air path, a low pressure air path is combined into a water pipeline before a spray gun, two transducers are arranged to adjust the pressure and flow of a water pump and an air pump, the nozzle bore diameter is phi 6-7mm, and the spray particle diameter is smaller than 300 micrometers; a temperature sensor is respectively arranged at a wetting tower inlet and the fume outlet, and the outlet temperature is controller to 130-150 DEG C; an operation program is controlled to calculate the temperature difference of the fume inlet temperature and the fume outlet temperature, tower volume and spray fall height; two transducers are used for controlling the water pump and the air pump to automatically adjust operation power when low air pressure is 0.4-0.6MPa, and air flow quantity and water flow quantity are 5-25T/H. the particle diameter of sprayed water spray is small and even, which can better realize precise control to temperature and reduces atomization particle residence time and wet bottom danger. The dust removal device designed by the invention increases fume density and volume, lowers speed and improves dust removal function. In particular, the spray granularity is small, which can obviously control temperature and humidity, lower discharge Dioxin and furan mixed in dust and reduce environment protection cost.
Owner:SHENYANG XINCHENG TECH

Method for extracting tungsten and molybdenum through acid decomposition of high-molybdenum scheelite

The invention relates to a method for extracting tungsten and molybdenum through acid decomposition of high-molybdenum scheelite. The method comprises the following steps: leaching the high-molybdenumscheelite with an acid solution, and extracting a leachate to extract molybdenum; extracting a leaching residue with hydrogen peroxide to obtain a solution containing peroxotungstic acid and peroxymolybdic acid, and heating or introducing SO2 to obtain tungstic acid and a solution containing the peroxomolybdic acid; extracting the tungstic acid with hydrogen peroxide, and heating or introducing SO2 to obtain tungstic acid and a solution containing the peroxomolybdic acid; repeating for several times till pure tungstic acid is obtained; preparing tungsten trioxide or tungsten powder from the pure tungstic acid; and heating or introducing SO2 into the solution containing the peroxomolybdic acid, dissolving obtained molybdic acid in a hydrogen peroxide solution to prepare a peroxomolybdic acid solution, and performing ultrasonic spraying pyrolysis to prepare molybdenum trioxide powder or molybdenum powder. By the method, the separation effect is good and the operation process is simple and easy to control, so that the method is easy to popularize and apply industrially.
Owner:CENT SOUTH UNIV

Method for producing microbial agent by using filter mud of sugar mills through fermentation

The invention provides a method for producing a microbial agent by using filter mud of sugar mills through fermentation, belonging to the field of the production technology of the microbial agents. The method can produce the high quality microbial agent and treat the pollutions caused by the industrial waste filter mud of the sugar mills at the same time, and also can achieve the circulating economic benefits for the sugar industries. The method comprises the steps of mixing the filter mud of the sugar mills, weathered coal of the humic acid or grass carbon and dried straw to obtain a mixture, controlling the water content of the mixture to 33%-70%, adding the microbial agent into the mixture at a mass ratio of 2% of the microbial agent to the mixture, rapidly stirring to form a homogeneous mixture, loading into a sealing bag, and carrying out anaerobic fermentation for 10 days at a room temperature of the south of China to obtain the microbial agent with an effective living bacteria number being greater than or equal to 300 million/g (higher than the national standard of 200 million/g). According to the invention, the method has the advantages of low cost, simple operation and high product quality, achieves the effective resource utilization through converting the filter mud of the sugar mill into a treasure, solves the problem of the environmental pollution and saves high environmental protection cost for the sugar industries, and brings good economic benefits at the same time, which can form a closed biosphere of the sugar production; and the biosphere creates circulating economic benefits, and brings rich rewards to the sugar industries and the sugarcane farmers.
Owner:王天喜 +1
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