167results about How to "Play the effect of energy saving and emission reduction" patented technology

The invention provides a vehicle speed inducing method for green driving at a signalized intersection in a car networking environment and a simulation system. When a vehicle travels to a preset vehicle speed inducing region, a central control system can acquire motion state information (position, speed, acceleration and the like) of the vehicle, and real-time dynamic green driving vehicle speed inducing is carried out on the vehicle by taking pass of the intersection without parking as a target. The vehicle speed inducing method alleviates blockage of the intersection of an urban road on traffic flow and reduces vehicle delay, fuel oil consumption and pollutant discharge at the signalized intersection. On the basis, a vehicle speed inducing simulation system in the car networking environment is built by applying an open-source multi-agent simulation tool Netlogo, and travel time, fuel consumption and pollutant discharge of the vehicle when passing the intersection in two environments, namely the traditional driving and car networking, are simulated, compared and analyzed, so as to verify feasibility and effectiveness of the vehicle speed inducing method.

The invention relates to a power supply system key information acquisition system and communication method based on Beidou satellite transmission, belonging to the field of remote monitoring of a power supply system. The system consists of a main station side system and a factory station side system, wherein the main station side system comprises a main station side data server and a Beidou satellite command airplane, and the Beidou satellite command airplane is connected with the main station side data server; the factory station side system consists of a three-phase acquisition circuit, a multi-path analogue-to-digital conversion integrated circuit, an intelligent electric energy meter, a Beidou satellite subscriber machine, a processor, a display and a data storage device, and the three-phase acquisition circuit is connected with the multi-path analogue-to-digital conversion integrated circuit; the multi-path analogue-to-digital conversion integrated circuit is connected with the processor; and the processor is respectively connected with the intelligent electric energy meter, the Beidou satellite subscriber machine, the data storage device and the display. The system has the advantages of reinforcing the accuracy, the timeliness and the safety of key data transmission, monitoring a distributive mini-type hydropower station in real time, improving the running management level of the mini-type hydropower station and optimizing the power flow distribution of a power grid so as to reduce the loss of the power grid and exert the effects of energy saving and emission reduction.

The invention discloses an anti-corrosion super-hydrophobic heat reflecting paint and a preparation method thereof. The anti-corrosion super-hydrophobic heat reflecting paint is prepared from the following raw materials: modified nano TiO2, modified nano SiO2, micron TiO2 and / or SiO2, fluorocarbon resin, a solvent, a curing agent, a defoaming agent, a wetting dispersant and a flatting agent. After experiments, the heat reflecting rate of the obtained product reaches 90 percent or more, the water contact angle reaches 145 degrees or more, and the product can meet the requirements on a coating under outdoor severe environments.

The invention belongs to the technical field of preparation of insulators for the construction of asphalt pavement road rollers and relates to an insulator for the low-temperature construction of road rollers and a method for preparing the same. The insulator is mainly prepared by mixing silicone oil, compound emulsifier, glycerin, pH regulator, preserving agent and water. The insulator has the advantages of high chemical stability, high high-low temperature resistance, no corrosion to steel wheels, small amount of coating, lasting insulating effect, environment friendliness and the like. By using the insulator, the asphalt mixture pavement is guaranteed to be constructed at the ultralow temperature (15 DEG C below zero), so that the working season is greatly prolonged; and during normal-temperature construction, by using the insulator, the mixing temperature of the asphalt mixture is reduced to 15 to 20 DEG C under the condition of unchanging the compaction degree and the emitted greenhouse gases are reduced in the mixing process and the environment-friendly and energy saving requirements are met.

The invention discloses a data center energy consumption management method and system based on dynamic frequency modulation. The method comprises frequency modulation energy conservation of a single server and task scheduling of energy awareness among servers, wherein the frequency modulation energy conservation of the single server comprises the steps of taking a time quantum of a constant task number as a frequency modulation unit, estimating dissipative energy of each unit according to an energy consumption model and task information, and utilizing a heuristic algorithm to select a frequency modulation mode which enables the sum of energy consumption of all units to be minimum so as to adjust the frequency of a processor; the task scheduling of energy awareness among the servers comprises the steps of selecting a candidate server according to the state of each server and the task information when a task reaches, utilizing a frequency modulation energy conservation method on the single server by each server according the task information to estimate the energy consumption change, selecting the server with the minimum energy consumption change by a controller to distribute a new task, and utilizing the frequency modulation energy conservation method on the single server by the selected server to modulate the frequency and operate the new task. According to the invention, the energy consumption of the servers in a data center is reduced by frequency modulation and task distribution, and energy saving and emission reduction effects are achieved.

The invention discloses a two-component aqueous acrylate-epoxy resin hybrid coating. The epoxy resin part comprises 35-55 parts of an acrylate-epoxy resin hybrid emulsion, 5-10 parts of titanium dioxide, 1-5 parts of zinc oxide, 20-35 parts of a filler, 0.1-1 part of an adhesion promoter, 1.1-2.5 parts of an auxiliary agent and 1-11 parts of water. The curing agent part comprises 1-3 parts of aqueous organic amine. Through use of the hybrid system of an acrylate emulsion and epoxy resin, the anticorrosion coating with a fast drying rate, high film formation density, high weatherability and excellent salt mist resistance is prepared. Through formula optimization and curing agent mixing, the coating is a metal anticorrosion waterproof coating with a long service life, good application properties, good low temperature flexibility, good corrosion resistance, high hardness and good contamination resistance. The two-component aqueous acrylate-epoxy resin hybrid coating effectively prolongs a metal device usage time limit, can be used in terrace paint, saves a cost and provides a value for the society.

The invention discloses an air dehumidification device based on electrodialysis. The air dehumidification device comprises a direct current power supply and a dehumidification unit, wherein the dehumidification unit comprises a positive electrode, a negative electrode, a macromolecule separation film, a plastic film, a dehumidification chamber and a sweeping chamber. Wet air can be directly dehumidified according to directional movement of water steam in a direct current electric field and a high osmotic coefficient of the macromolecule separation film to steam molecules, so that a dehumidification effect and the dehumidification accuracy are improved, and the unnecessary energy consumption is avoided. Compared with a conventional freezing dehumidification device, the air dehumidification device is simple in structure and convenient to operate. The device can be driven by a clean and environmentally-friendly solar photovoltaic power generation system (or systems for generating power such as a wind energy power generation system), so that effects of saving energy and reducing emission are achieved, and various natural energies are effectively used.

The invention discloses an ammonia-hydrogen mixed gas power system based on hydrogen ignition and an operation control method, the ammonia-hydrogen mixed gas power system comprises a liquid ammonia supply assembly, an evaporator, a storage pressure stabilizing condenser, a hydrogen supply assembly, an ammonia-hydrogen internal combustion engine, an ammonia cracker, a cooling water pump and a radiator, the ammonia-hydrogen internal combustion engine is provided with a fuel gas channel injection device, a fuel in-cylinder injection device and a cooling system; when the ammonia-hydrogen internal combustion engine is started, the temperature of gas in the ammonia cracker is low, ammonia cannot be subjected to cracking reaction, at the moment, the ammonia cracker does not work, the hydrogen supply assembly supplies hydrogen to the injection device in the fuel cylinder, the injection device in the fuel cylinder injects the hydrogen into all air cylinders of the ammonia-hydrogen internal combustion engine, and ignition and combustion supporting of ammonia are achieved; the problems that when the internal combustion engine is started, the exhaust temperature is low, energy needed by ammonia cracking cannot be provided, and the ammonia-hydrogen internal combustion engine is not started smoothly due to the fact that ignition fuel does not exist are solved, and the energy needed by ammonia cracking comes from cooling and exhaust heat sources of the internal combustion engine and a battery system.

The invention discloses a light wear-resistant aluminum-based powder metallurgical composite material automobile brake disc and a preparation method thereof. A disc body of the automobile brake disc is made of an aluminum-based structural material, and a frictional surface is made of a wear-resistant aluminum-based composite material. According to the preparation method, the automobile brake discis prepared by using wear-resistant aluminum-based composite material mixed powder, aluminum-based structural material mixed powder and other raw materials through regional reinforcement and integrated ''near-net-shaping'' technologies according to the principle of powder metallurgy. The prepared aluminum-based powder metallurgical composite material automobile brake disc has a series of advantages of being free of damage, free of defects, good in compactness, high in strength and the like and can well meet the requirements for braking and wear resistance of the automobile brake disc; meanwhile, compared with a traditional cast iron brake disc, the weight is reduced by more than 55%, so that energy consumption is greatly lowered, and the national requirements for energy conservation and emission reduction are met; and the preparation method is easy and convenient to use, low in cost and high in finished product rate and can be used for preparing automobile brake discs of various dimensions and structures, thereby meeting the requirement for industrial mass continuous production.

The invention discloses an alkali-resistant disperse dye composition and a preparation method and the use thereof. The composition is composed of five disperse dyes and a dispersing agent. A preparation method of the dyes is further provided. The preparation method includes the following steps: evenly mixing 6 components forming the dye composition to obtain a final product of the alkaline-resistant brown disperse dye composition. The dye composition is used for the field of printing of cloth fibers such as dacron double-faced pile and poly spun velour. The alkaline resistance of the brown dye composition is better than commonly used brown in market, pH value is wide in suitable range of 13.5-14, and the alkali-resistant disperse dye meets requirements for brown dye and has good market prospect.

The invention discloses a system and method for producing activated carbon and cogenerating power by using Arundo donax Linn. The system comprises a pretreatment system, a pyrolyzing furnace, a combustion chamber, a waste heat boiler and a power generator, wherein the pretreatment system comprises a discharge port; the pyrolyzing furnace comprises a feed port, a superheated steam inlet, an activated carbon outlet and an oil-gas outlet; the combustion chamber comprises an oil-gas inlet and a fume outlet; the waste heat boiler comprises a fume inlet and a superheated steam outlet; and the power generator comprises a superheated steam inlet. By using the system and method, the Arundo donax Linn is pretreated and pyrolyzed, and secondary activation of biological carbon is carried out in the holding process after the pyrolysis finishes, thereby obtaining the activated carbon. The high-temperature oil gas generated by pyrolysis is combusted and subjected to heat exchange by the waste heat boiler to generate superheated steam, part of the superheated steam is used for activating biological carbon, and part of the superheated steam is used for steam turbine power generation. The system and method implement cogeneration of activated carbon and electric power, thereby reducing the demands for external energies and having the effects of energy saving and emission reduction.

The invention provides a laundry and dye absorbing integrated tablet. The laundry and dye absorbing integrated tablet comprises a dye absorbing piece, a fiber piece and a laundry piece, wherein the dye absorbing piece and the laundry piece are arranged on two sides of the fiber piece respectively. Compared with the conventional single laundry tablet or dye absorbing tablet, the laundry piece and the dye absorbing piece are mixed for use, and the laundry effect is improved; besides, plant essence is added to the components of the laundry piece, so that the laundry fragrance is improved, and the softening effect of laundry is improved by adding a softening agent. The dye absorbing range is enlarged by adding an active solid cationic etherifying agent and a fluorocarbon surfactant to the formula of the dye absorbing piece simultaneously, by adding coconut oil, the laundry capacity is improved, the laundry efficiency is improved, the laundry cost is reduced, and the effects of energy saving and emission reduction are realized.

The invention discloses an intelligent stereo garage control system for new energy vehicle charging and relates to the technical field of intelligent garages. The system comprises a wall-mounted part,a power supply part, a charging part, a control part, an intelligent terminal and a vehicle-mounted part. A server is in control connection with a base control module through a WiFi wireless communication module, the base control module performs drive control on movement of a transmission coil base. A transmission coil is mounted in a vehicle carrying board of a garage, the position of the transmission coil is adjusted through a drive module, each parking space is equipped with a charging cabinet, and wired and wireless charging of vehicles can be realized; the charging quantity and use information of parking spaces are checked remotely through an intelligent terminal, the comprehensive utilization rate of power generation equipment can be increased, energy saving and emission reduction effects can be realized, electric vehicles can be charged while the parking difficulty is solved, the cost is lower than that for independent construction of a charging pile, the wireless charging manner is more convenient, charging equipment is prevented from being erected in the open-air environment, the safety performance is high, and the floor area is saved.

The invention discloses a spray-dyeing device with a good dyeing effect. The device comprises a frame, a raw material roller movably connected with the frame, a receiving roller movably connected withthe frame, a driving device for driving the movement of a fabric, an applicator for smearing evenly the dyeing liquid on the fabric and a flattening device for flattening the fabric; the flattening device comprises a left roller shaft set, a right roller shaft set matched with the left roller shaft set, a left transmission structure for being in drive connection with the left roller shaft set andthe driving device and a right transmission structure for being in driving connection with the right roller shaft set and the driving device; the device pulls the two edges of the fabric to the sidesby the arrangement of the left and right roller shaft sets, so that the surface of the fabric is kept flat, and the appearance of wrinkles is avoided so that the dyeing liquid can be evenly sprayed on the fabric to ensure uniform dyeing of the fabric.

The invention provides a management system controlling household hydroelectric equipment by utilizing pulse. The management system comprises a pulse detector; a collection microprocessor is arranged on the pulse detector; the signal input end of the collection microprocessor is connected with a vibration sensor; the output end of the collection microprocessor is connected with a wireless sending circuit; the wireless sending circuit is connected with a wireless receiving circuit in a hydroelectric equipment controller in a wireless manner; the wireless receiving circuit is connected with the input end of a receiving microprocessor; the output end of the receiving microprocessor is connected with a relay circuit in the wireless manner; and the relay circuit is connected with a hydroelectric equipment switch. A realization method comprises the following steps that: the pulse detector sends a waking signal or a sleeping signal for detection to the hydroelectric equipment controller through the collection microcontroller; and the receiving microprocessor controls the hydroelectric equipment to switch off or on through the relay circuit. With the management system and the realization method provided by the invention, the occurrence rate of household hydroelectric accidents is reduced.

The invention discloses low-temperature solidification spray coating, comprising a dry material and an inorganic binding agent, wherein the dry material is formed by stirring and mixing flint clay granules, electric ceramic granules, mullite granules, mullite fine powder, white corundum powder, activated aluminium oxide powder, nanoscale silicon micro powder, Guangxi white mud and a PT organic binding agent, wherein the inorganic binding agent is liquid sodium silicate. The scientific grain size distribution is adopted, and the materials such as the nanoscale silicon micro powder, the activated aluminium oxide powder and the inorganic binding agent which are added in a compounding way enable the spray coating to be solidified under a low temperature condition, so as to form a whole high-intensity low-temperature solidification lining body; the inorganic binding agent and the organic binding agent mutually react to improve the construction performance of the spray coating, so that the rebound is lowered to10 percent. After being used during the construction of a large sintering flue, a warm-air pipeline, a dust removal pipeline and the like in practice, the spray coating can be solidified to form the whole high-intensity lining body by self-combination under lower temperature without sintering, thus obviously reducing material consumption and achieving the aim of energy conservation and emission reduction.

The invention discloses a RH vacuum chamber baking system which comprises a vacuum chamber baking device and a vacuum chamber, wherein the vacuum chamber baking device is provided with a baking cover; the baking cover is matched with the upper part of the vacuum chamber; a vacuum chamber insert tube is connected with a waste gas box; the waste gas box is provided with an exhaust port; the exhaust port of the waste heat box is connected with an air mixer through a control valve; and the air mixer is connected with a waste gas duct. By arranging the baking cover and control valve, in the vacuum chamber drying process, the opening of the control valve is reduced, the retention time of baking hot gas in the vacuum chamber is prolonged, the loss of heat is avoided maximally, and the heating of the baking waste gas on the lower part of the vacuum chamber can be effectively controlled, thereby promoting the temperature uniformity of the refractory material in the vacuum chamber; and in the vacuum chamber baking process, the control valve can be adjusted to control the flow rate of the waste gas by utilizing the draft formed by the chimney effect of the waste gas duct, thereby ensuring the baking speed and baking quality of the vacuum chamber.

The invention relates to a close type polyurethane prepolymer used for preparing low temperature plasticizing PVC plastisol, which can improve the adhesion of the PVC plastisol on an electrophoresis paint plate and simultaneously reduce the plasticizing temperature of the PVC plastisol so as to reduce energy consumption. The polyurethane prepolymer is characterized in that: the polyurethane prepolymer is polymerized by polyisocyanate and a polyhydroxy compound with the generation terminal group of the semi-prepolymer of - NCO and a sealant is applied to blocking the semi-prepolymer so as to obtain the close type polyurethane prepolymer. The preparation method is as follows: 50 portions to 500 portions of a diluent are added into a three-necked reactor, stirred and heated to 75 DEG C to 80 DEG C, then 100 portions to 400 portions of polyisocyanate are added, 250 portions to 800 portions of the polyhydroxy compound are added slowly, reaction lasts for 3 hours to 4 hours, then 10 portions to 200 portions of the sealant and 0 portion to 2 portions of a catalyst are added slowly and the reaction lasts for 2 hours and 3 hours.

The invention discloses a high-voltage electric field aided cooling and dehumidifying device, which comprises a direct-current power supply unit, a dehumidifying unit and a cooling unit; the direct-current power supply unit is respectively connected with a positive plate electrode and a negative plate electrode of the dehumidifying unit to form a high-voltage electric field; the cooling unit is used for supplying cooling water for the dehumidifying unit; steam in to-be-dehumidified air tends to the positive plate electrode under the action of the high-voltage electric field, and is congealed and dewed. The high-voltage electric field aided cooling and dehumidifying device disclosed by the invention does not need to consume redundant cold and reheat heat, and is energy-saving and environmentally friendly.

The invention discloses a novel aluminium profile divided-chamber aging furnace which comprises a furnace body, a furnace body support, a circulating fan, a heater, an in-furnace diversion system, a bottom-disposed lifting furnace door mechanism, a chamber dividing clapboard device, and furnace temperature monitoring devices; the furnace body comprises a front and a back end wall, an outside wall, a feeding side wall, and a furnace top, is supported in the air by the furnace body support; the furnace body support is mounted on a workshop base; the circulating fan and the heating are disposed on the furnace top; the bottom-disposed lifting furnace door mechanism is located at the furnace bottom; the chamber dividing clapboard device is vertically disposed on the furnace top; the in-furnace diversion system is distributed in a furnace chamber air channel; an aluminium alloy profile is put in a material case, and is disposed on a side-installed discharging three dimensional material skip at one side of the furnace body; the furnace temperature monitoring devices are mounted on subareas of the furnace body. The invention is novel in design, reliable in operation, convenient for installation, low in operation cost, and strong in operationality and practicality, and is widely applicable to aging treatment of aluminium alloy profiles with various specifications in aluminium processing industry.

The invention discloses a power battery pack heat dissipation device with a heat pipe device. The power battery pack heat dissipation device comprises a housing, a separator plate, a heat dissipationheat pipe, an air cooling mechanism and a water cooling mechanism. The inner cavity of the housing is divided into a heat dissipation cavity and a heating cavity for holding a battery core through theseparator plate; the evaporation end of the heat dissipation heat pipe is tightly attached to the battery core located in the heating cavity; the cooling end of the heat dissipation heat pipe runs through the separator plate and then, stretches into the heat dissipation cavity; the air cooling mechanism is installed on the outer side of the housing, and a heat dissipation air duct of the air cooling mechanism communicates with the heat dissipation cavity; and the water cooling mechanism is connected with the cooling end of the heat dissipation heat pipe. Meanwhile, the invention further discloses a heat dissipation method of the power battery pack heat dissipation device with the heat pipe device. Moisture and dusts in air can be prevented from being attached to the surface of the battery, so that the battery is protected, and the performance of the battery is guaranteed; and meanwhile, different working modes can be adopted in the heat dissipation process, and the effects of energy conservation and emission reduction are achieved under the condition that the heat dissipation efficiency is guaranteed.

An energy-saving comfortable vehicle air-conditioner comprises an air-conditioner housing arranged at the roof of a vehicle, and a condenser assembly and an evaporator assembly are arranged inside the air-conditioner housing, wherein the condenser assembly is arranged in front of the evaporator assembly in the forwards-moving direction of the vehicle; the front portion of a condenser cover is provided with arc-shaped diversion holes, and both sides of the condenser cover are provided with bar-shaped air inlet grids. By means of the technical scheme, the energy-saving comfortable vehicle air-conditioner has the advantages that a condenser and an evaporator are integrally designed, a parallel flow heat exchanger employs large units, so that the number of pipe connecting parts and housing fixing positions can be reduced and further the integral structure can be simpler, lighter and more stable; the condenser and the parallel flow heat exchanger are horizontally arranged at forward open angles, the front air inlet surface of the condenser cover is provided with arc diversion members, so that the air inlet uniformity and the heat exchanging efficiency of the condenser can be greatly improved and further energy consumption can be reduced.

The invention discloses a preparation method of an aluminum-based composite material applied to a light brake disc. The preparation method comprises the following steps: preparing Al2O3 foamed ceramic by adopting an organic foam dipping method, subsequently adding SiC particles into molten aluminum alloy and uniformly stirring to obtain a SiC particle reinforced aluminum-based composite material prefabricated body, and then allowing the molten prefabricated body to permeate into pores of the Al2O3 foamed ceramic by adopting a high-temperature pressure casting process to obtain an Al2O3 foamed ceramic reinforced aluminum-based composite material containing SiC particles. The surface of the brake disc is prepared from the Al2O3 foamed ceramic reinforced aluminum-based composite material containing the SiC particles. The aluminum-based composite material has unique wear resistance and high-temperature resistance as well as light weight and can preferably meet the requirements on the safety and wear resistance of the brake disc than a cast iron material.

The invention relates to the technical field of membrane distillation and discloses a vacuum type multiple-effect membrane distillation system. The vacuum multiple-effect membrane distillation systemcomprises a steam compressor, a second heat exchanger and a plurality of membrane distillation assemblies, wherein each membrane distillation assembly comprises a first heat exchanger and a membrane distiller, a fourth outlet of the membrane distiller is connected with a corresponding second inlet of the first heat exchanger, a first inlet of the first heat exchanger is connected with a first outlet of the former first heat exchanger, and a third inlet of the membrane distiller is connected with a third outlet of the later membrane distiller; the second heat exchanger comprises a fifth inlet,a fifth outlet, a sixth inlet and a sixth outlet, the second outlet is connected with the fifth inlet through the steam compressor, the sixth inlet is connected with a first outlet of the first heat exchanger at the tail end, and the sixth outlet is connected with a third inlet of the membrane distiller at the tail end. The vacuum type multiple-effect membrane distillation system disclosed by theinvention overcomes the problems that a traditional membrane distillation process has a low heat utilization rate, a complex distillation work procedure, larger energy consumption and the like; by means of gradient utilization of energy, energy consumption of a distillation work procedure is greatly reduced.

The invention relates to a dual-cooled diesel engine. The diesel engine comprises a tank body (2) and a cylinder barrel (1) connected to the top of the tank body (2), wherein the cylinder barrel (1) comprises a cylinder sleeve (1.1) and radiating fins (1.2) sleeved on the cylinder sleeve (1.1); the outer wall of the cylinder sleeve (1.1) is provided with a cooling water jacket (3); a water inlet and a water outlet are formed on the cooling water jacket (3); the radiating fins (1.2) are partitioned into two parts by using the cooling water jacket (3); a part of the radiating fins are positioned in the cooling water jacket (3); and the other part of the radiating fins are positioned outside the cooling water jacket (3). The dual-cooled diesel engine has a remarkable cooling effect.

The invention relates to a sintering flue gas heating denitration device and a sintering flue gas heating denitration method, which belong to the field of the treatment of industrial waste gas. The sintering flue gas heating denitration device comprises a denitration tower as well as a gas inlet flue and an exhaust flue which are connected with the denitration tower, the gas inlet flue is connected with an ammonia gas delivery pipe and a flue burner, a flue gas-flue gas reheater used for heat exchanging is connected between the gas inlet flue and the exhaust glue, the exhaust flue is connectedwith a desulphurization tower, and the top of the desulphurization tower is provided with a wet-type electric dust collector. The device effectively recycles the waste heat by adopting an energy two-level recycling method. The sintering flue gas heating denitration method comprises the following steps: heating the sintering flue gas to 300 to 320 DEG C, mixing the sintering flue gas and ammonia gas, and performing catalytic reaction to obtain denitrated pure flue gas; cooling the denitrated flue gas and the sintering flue gas before the heating in a heat exchanging manner to 150 to 160 DEG C,desulphurizing, and dedusting. By adopting the method, the waste heat is recycled by adopting the energy two-level recycling method, thereby saving the energy.

The invention discloses a method for preparing dipropylene glycol methyl ether. The method for preparing the dipropylene glycol methyl ether is characterized by comprising the following steps of taking tower bottoms left after propylene glycol methyl ether is extracted as raw materials, performing a ring-opening addition reaction on the raw materials and epoxypropane in the presence of a strongly basic catalyst, recovering excessive 2-methoxy-1-propyl alcohol in the synthetic products by virtue of rectification and then separating to obtain the product dipropylene glycol methyl ether. The method for preparing the dipropylene glycol methyl ether has the advantages that as15-25% of dipropylene glycol methyl ether continues reacting with the epoxypropane to generate tripropylene glycol methyl ether which is higher in boiling point in the process of synthesizing the dipropylene glycol methyl ether by reacting the tower bottoms and the epoxypropane, enough output of the tripropylene glycol methyl ether is guaranteed by use of the synthesis method, and the tripropylene glycol methyl ether is capable of continuing dissolving catalysts such as sodium methylate and sodium hydroxide so that the sodium methylate can be prevented from being decomposed to generate methanol as being heated under the circumstance of a relatively high concentration, and therefore, the potential hazard that the methanol is possible to be in an explosion range after being mixed with air and explodes under high heat can be avoided.

The invention relates to a method for co-producing potassium alum or ammonia alum and polyaluminium chloride, which comprises the following steps: taking alum sludge as raw material, adding water or recovery liquid to the alum sludge to pulp; then adding sulfuric acid with the concentration being more than or equal to 93 wt. percent and water or recovery liquid to alum sludge paste; reacting for 10 to 14 hours under the condition that the concentration of the sulfuric acid is 30 to 35 wt. percent; settling, separating and obtaining the solid potassium alum and aluminum sulfate solution; adding equivalent ammonium chloride or potassium chloride to the aluminum sulfate solution; stirring and reacting for 5 to 6 hours; and settling, separating and obtaining the solid potassium alum and the aluminum sulfate solution. The aluminum sulfate solution is used for preparing the polyaluminium chloride. The invention co-produces the potassium alum, the ammonia alum and the polyaluminium chloride during the whole reaction process by utilizing idreaction through taking the alum sludge, the sulfuric acid, the potassium chloride, the ammonium chloride and the aluminum ash as raw materials, so that the potassium chloride and the alumina in the alum sludge can be fully utilized, and the policies of cyclic utilization of resources, energy conservation and drainage reduction are really executed.

The invention discloses a system and method for preparing bio oil, activated carbon and combustible gas through arundo donax Linn. polygeneration. The system comprises a pretreatment system, a pyrolysis furnace, a waste heat boiler, an air preheater and an oil and water separation system; the pretreatment system comprises a drying device which comprises a feed inlet and a discharge hole, the pyrolysis furnace comprises a feed inlet, an oil gas outlet, a superheated steam inlet and an activated carbon outlet, the waste heat boiler comprises an oil gas inlet, an oil gas outlet and a condensate outlet, the air preheater comprises an oil gas inlet, a combustible gas outlet and a condensate outlet, and the oil and water separation system comprises a condensate inlet and a bio oil outlet. According to the system and method for preparing the bio oil, activated carbon and combustible gas through arundo donax Linn. polygeneration, arundo donax Linn. is subjected to pyrolysis, after pyroysis is completed and heat preservation is conducted, biochar is activated again, and activated carbon is obtained; high-temperature oil gas produced through pyrolysis is recycled through waste heat to produce the bio oil and combustible gas, and energy consumption of the system is greatly reduced.

The invention discloses an anti-wind device improving the heat exchange capability of a direct air-cooling unit. The device comprises a windbreak blade and is characterized in that the device is arranged in a cross shape under an air-cooling platform of the direct air-cooling unit in a thermal power plant, the length and the width of the device are the same with those of the air-cooling platform, so that the lower side of the air-cooling platform is sealed totally. Vent holes with certain aperture ratios and different diameters are formed on the windbreak blade, a windbreak blade opening system is arranged on the device and can adjust the opening area and angle of the windbreak blade automatically according to different wind speeds and wind direction angles, therefore the heat exchange efficiency of the air-cooling system is improved effectively, the backpressure is reduced, the electric energy production is improved, energy is saved, and emission is reduced.