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413results about How to "Good benefit" patented technology

Preparation method of star polycarboxylic acid high-performance water reducing agent

ActiveCN102887979AExtended Dionon Design-Structure-PropertyExpanding the theoretical connotation of the design-structure-performance of moleculesWater reducerPollution
The invention relates to a preparation method of a star polycarboxylic acid high-performance water reducing agent. Polybasic alcohol and (methyl) acrylic acid used as main raw materials for esterification are esterified and polymerized to prepare the star polycarboxylic acid high-performance water reducing agent material: the (methyl) acrylic acid and polybasic alcohol used as reactants are esterified under the action of a catalyst to firstly prepare a star polymerizable active terminal, and free-radical polymerization reaction is carried out with unsaturated polyethenoxy ether, molecular weight regulator and unsaturated carboxylic acid monomer under the action of an initiator to prepare the star polycarboxylic acid high-performance water reducing agent. The invention is easy to control, and has the advantages of high polymerization degree, low cost and no pollution; the esterification reaction is carried out form an active core, and the free-radical polymerization is carried out to generate the chain arm, thereby implementing the polycarboxylic acid high-performance water reducing agent in a star molecular structure; and under the condition of common doping amount and low doping amount, the star polycarboxylic acid high-performance water reducing agent has better cement paste flowability and holding capacity than the traditional linear and comb polycarboxylic acid water reducing agents, and has favorable cement adaptability and concrete application performance.
Owner:GUIZHOU DR SHI TECH

Comprehensive utilization method for red mud

The invention discloses a method for comprehensively utilizing red mud, comprising the following steps: chloridizing roasting, namely roasting the mixture of the red mud, coal and calcium chloride; cinder treatment, namely obtaining magnetic iron slag and non-magnetic slag after magnetic separation is carried out to levigated cinder, and then separating the magnetic iron slag and non-magnetic slag; adding calcined soda or oxalic acid after levigation liquid and wash water are rich in mischmetal due to cyclic use, and then precipitating mischmetal slag; treatment of dry dust and circulation liquid, namely, after dry powder for roasting dust collection is collected, mixing the dry powder with scouring water which is used for tail gas circulation and then leaching soluble ScCl3 and GaCl3; after filter pressing, precipitating scandium by adding oxalic acid crystal in filtrate; carrying out filter pressing again, precipitating gallium and Ti(OH)4 by adding ammonia into the filtrate, dissolving obtained gallium-titanium slag with acid and then using P2O4 extractant to extract the gallium; and using extractant to extract the scandium after scandium precipitate is dissolved by acid, carrying out precipitation again by adopting back-extraction acid dissolving, and obtaining Sc2O3 by means of roasting. The method can realize recovery of valuable metals from the red mud, and secondary residual slag is totally used for building material production; and the method has environment protection effects and economic benefits, plays an important role in the development of recycling economy and is applicable to enterprises generating red mud.
Owner:张钦

Method for simultaneously recovering water and latent heat in high-humidity flue gas and heat pump device

The invention discloses a method for simultaneously recovering water and latent heat in high-humidity flue gas and a heat pump device, relating to the technique of energy-saving equipment. A heat exchanger is arranged in an absorber of the heat pump device, the top of the absorber is provided with a flue gas discharging pipe, the bottom of the absorber is provided with a dilute solution outlet, the side surface of the bottom is provided with a gas inlet pipe, the side surface of the top is provided with a concentrated solution inlet, and a concentrated solution pipeline is communicated with a spray head at the inner upper part of a cavity; the top of a regenerator is provided with a dilute solution inlet, the bottom of the regenerator is provided with a concentrated solution pipeline outlet, a gas-liquid heat exchanger is arranged in the regenerator, and an inlet and an outlet of the gas-liquid heat exchanger are communicated with a flue gas pipe; the flue gas pipe is communicated with the gas inlet pipe at the bottom of the absorber after passing through the regenerator; the bottom of the absorber is communicated with the regenerator through a dilute solution pipeline, in which a regulating valve is arranged; and the regenerator runs under negative pressure, and the bottom of the regenerator is communicated with the absorber through the concentrated solution pipeline, in which a solution pump is arranged. The method and the device directly recover the water and the latent heat in the flue gas and have the advantages of equipment simplification, better energy saving, environmental protection and economic benefit.
Owner:INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI

Auxiliary primary frequency modulation and optimization control method for battery energy storage systems

ActiveCN104065095AMake up for the shortcomings of insufficient power variationThe disadvantage of insufficient power variation improvesFlexible AC transmissionAc network load balancingElectricity priceEngineering
The invention provides an auxiliary primary frequency modulation and optimization control method for battery energy storage systems. The auxiliary primary frequency modulation and optimization control method is characterized by comprising the following steps: obtaining the power shortage and the power grid frequency deviation change rate of primary frequency modulation; obtaining the modulation proportional coefficient of the battery energy storage system; computing the output power value of the battery energy storage system, determining the amendment opportunity and the amendment degree of the battery in a charging state, and amending. According to the method provided by the invention, the deficiency that a generator unit is insufficient in power change is made up; and the energy storage system is rapid in response speed, thus facilitating the faster recovery of power grid frequency. After the frequency modulation is completed, on the premise that the power grid frequency is not caused to cross a dead zone, SOC of the battery is corrected, next smooth frequency modulation process is ensured, the situation of time-of-use electricity price is comprehensively considered, charging cost for energy storage is reduced, and back discharge proceeds are increased.
Owner:STATE GRID CORP OF CHINA +3

Method for preparing carbon microsphere adsorbent under catalysis of metal salt with low-temperature hydrothermal method

The invention discloses a method for preparing a carbon microsphere adsorbent under catalysis of metal salt with a low-temperature hydrothermal method. The method comprises steps as follows: (1) a biomass solution with the concentration being 2wt%-20wt% and a metal salt solution with the concentration being 0.5wt%-2wt% are prepared, then mixed in the mass ratio being (2-5):1 and stirred for 5-10 min, and a reaction solution is obtained; (2) the reaction solution is transferred to a stainless steel reaction kettle, the volume of the reaction solution accounts for 60%-80% of that of the reaction kettle, the reaction solution is heated to 100-160 DEG C at a certain heating speed, reacts at the constant temperature for 8-20 hours and is naturally cooled, separated and dried in vacuum, and hydrothermal carbon microspheres are obtained; (3) the hydrothermal carbon microspheres are calcined and carbonized at the air atmosphere, and the carbon microsphere adsorbent is obtained. The preparation process of the adsorbent is simple, energy consumption is low, the reaction time is shortened to be within 24 hours, and the adsorbent has high adsorption performance for part of positive ions, particularly, uranyl ions, has excellent radioresistance, thermal stability and acid stability and can be widely used for treatment of radioactive wastewater.
Owner:SOUTHWEAT UNIV OF SCI & TECH

High-impermeable anti-floating pile raft structure and construction method

The invention relates to a high-impermeable anti-floating pile raft structure. The high-impermeable anti-floating pile raft structure is characterized in that a pre-stress hollow tube section is arranged at the upper portion of a bored pile, the pre-stress hollow tube section is concentric with the bored pile, a reinforcement cage of the bored pile penetrates through the pre-stress hollow tube section and extends into a raft foundation to be connected with a raft inner reinforcing steel bar, an inner connection rib is arranged on the inner side of the pre-stress hollow tube section, and a sand cushion layer and a gravel blind ditch are laid at the upper portion of foundation soil. The raft foundation is sequentially provided with a horizontal water-resisting layer, a cemented soil board and a reinforced concrete raft board from bottom to top. A foundation pit support pile and a wall body of a side wall of a basement are fixedly connected through reinforcing rib materials. The high-impermeable anti-floating pile raft structure can enhance the integrity and strength of an upper portion structure, can reduce uplift pressure of underground water and can fully utilize waste slurry of the bored pile to achieve waste utilization. The pre-stress hollow tube section is arranged at the top of a pile body, so that a pile cutting work process of the bored pile is removed, and the construction efficiency is improved. The invention further discloses a construction method of the high-impermeable anti-floating pile raft structure.
Owner:HONGXIN CONSTR GRP

Method for preparing complete feed through probiotics asynchronous high-low-moisture fermentation

The invention discloses a method for preparing complete feed through probiotics asynchronous high-low-moisture fermentation and belongs to the technical field of microbial feed. The method comprises the following concrete steps that: firstly, protein feed is subjected to impurity removal and crushing, nutrition substances are added, mixed and stirred with clean water, and the moisture content is regulated to 60 to 70 percent; then, yeast, bacillus licheniformis and bacillus subtilis strain liquid is inoculated, high-moisture-content aerobic fermentation is carried out for 12 to 96 hours, and the fermentation temperature is 35 to 45 DEG C; then, energy feed is added, mixing and stirring are carried out, and the moisture content is regulated to 25 to 35 percent; next, lactobacillus lactis, enterococcus faecium, lactobacillus acidophilus, enterococcus faecalis and lactobacillus plantarum strain liquid is added, complex enzyme is added, the low-moisture-content anaerobic fermentation is carried out for 24 to 120 hours, and the fermentation temperature is 25 to 35 DEG C; and finally, the complete feed finished product is prepared through rolling tube drying, mixing and stirring, granulation and package. The method has the beneficial effect that the production efficiency and the feed nutrition value are improved.
Owner:江苏中煤长江生物科技有限公司

Method for increasing oil recovery ratio by utilizing symbiotic reproduction and complex metabolism and microbial preparation

The invention discloses a method for increasing the oil recovery ratio by utilizing symbiotic reproduction and complex metabolism and a microbial preparation, the CR-CM principle is mainly utilized for periodically injecting exogenous oil production microbes, an activating agent and air into a target oil layer, and an endogenous and exogenous oil production microbial new system (CR) is established in the oil layer by greatly activating endogenous oil production microbes. All the oil production microbes in the CR system are mutually linked through a biological chain through the technical control, and the complex metabolism (CM) which is conductive to oil production is further produced, thereby realizing the purposes of increasing the oil and increasing the recovery ratio under the dual-function of the oil production microbes and complex metabolites thereof. The method can not only increase the oil production, but also improve the oil reservoir conditions, increase the final recovery ratio by more than 4% and prolong the exploitation time by 3-5 years. For an oil field with high viscosity and high wax content, the method can reduce the viscosity of thick oil by more than 24%, reducea freezing point by 5-10 DEG C, increase the final recovery ratio by more than 5% and prolong the exploitation time by more than 5 years.
Owner:华汉生态修复新技术有限公司

Method and system for assessing relay protection dynamic characteristics of high-voltage direct-current power transmission line

The invention discloses a method and system for assessing relay protection dynamic characteristics of a high-voltage direct-current power transmission line. The method comprises the following steps: simulating computed result data; extracting basic electric quantity data related with direct-current line protection; extracting protection required characteristic quantity through a constructed characteristic quantity function module; forming a dynamic characteristic curve of the direct-current line protection characteristic quantity; computing computational boundary conditions for direct-current power transmission line protection; and carrying out direct-current line protection assessments to obtain assessment values, wherein the assessments include constant value assessment of direct-current line protection, global assessment of direct-current power transmission line protection, assessment of specific state protection performance and assessment of influence of related factors on protection performance. Due to the adoption of the method and system, the working efficiency and the accuracy of protection performance assessment and research can be greatly improved, and good practical benefits are achieved.
Owner:CSG EHV POWER TRANSMISSION +1

Land-sea-air integrated ecological environment monitoring system

The invention relates to a land-sea-air integrated ecological environment monitoring system. The system comprises a data acquisition module, a data transmission module and a data processing module, wherein the data acquisition module comprises a ground data acquisition unit, an air data acquisition unit and a marine data acquisition unit which are respectively used for acquiring ecological environment data of the ground, the air and the sea, and the data acquisition module transmits the acquired ecological environment data to the data processing module through the data transmission module; thedata processing module comprises a data acquisition control unit, an intelligent data acquisition unit, a data monitoring unit and a data storage unit; the data acquisition control unit and the intelligent data acquisition unit are used for controlling the data acquisition module according to the received ecological environment data; the data monitoring unit performs data analysis and early warning according to the received ecological environment data; according to the invention, omnibearing, all-weather and multi-dimensional remote monitoring and intelligent early warning and forecasting ofthe ecological environment are realized, and the monitoring benefit is improved.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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