51results about How to "Reduce the difficulty of starting" patented technology

The invention relates to a method for starting a single-stage self-supported denitrification reactor, comprising the following steps: establishing a microflora with nitrosobacteria and nitrobacterium as the mainstay under the conditions of restricted supply of oxygen and small amount of available organic carbon source; then controlling ammonia nitrogen oxidization to nitrous acid phase through restricted oxygen supply so as to gather nitrosobacteria, inhibit growth of nitrobacterium and establish the microflora with the nitrosobacteria as the mainstay; optimizing the microenvironment where nitrosobacteria and anammox coexist by adjusting aeration modes and controlling dissolved oxygen level on the basis of the stable nitrous acid system, so as to promote growth and enrichment of the anammox and successfully start the single-stage self-supported denitrification reactor. The method of the invention solves the problem of inoculum source of the single-stage self-supported denitrification reactor, features simple and practical starting mode, reduced difficulty of starting the single-stage self-supported denitrification reactor and shortens times for starting the single-stage self-supported denitrification reactor.

The invention discloses a method for quickly starting short-cut nitrification and denitrification of ammonia-containing wastewater. The method includes the steps: (1) putting denitrified activated sludge into a bioreactor; and (2) starting by a way of batch water feeding and gradual increase of the fed water ammonia-nitrogen concentration, and adding an ammonia oxidizing bacteria growth promoter, wherein the ammonia oxidizing bacteria growth accelerator includes 40 to 100 parts by weight of metal salts, 5 to 30 parts by weight of a polyamine substance, 0.05 to 1.5 parts by weight of inorganic acid hydroxylamine and 10 to 40 parts by weight of Na2SO3, the metal salts comprise a calcium salt, a ferrous salt and a copper salt, and the molar ratio of Ca<2+> to Fe<2+> to Cu<2+> is (5-15) to (1-8) to (0.5-5); and (3) when the fed water ammonia-nitrogen concentration reaches 400 to 700 mg/L, changing the mode into a mode of continuous water feeding, continuing to add the growth promoter, and when the ammonia-nitrogen removal rate is more than 90% and the nitrosation rate reaches 80%, starting to add a denitrification inoculum. The method can quickly start short-cut nitrification and denitrification process in a short time, and has the advantages of short starting time and high total nitrogen removal rate.

The invention discloses a rapid starting method of shortcut nitrification and denitrification in an A/O (Anoxic/Oxic) process. The rapid starting method comprises the following steps of: (1) placing a suspended filler in an oxic tank; (2) respectively placing inoculated sludge in an anoxic tank and the oxic tank; (3) enabling wastewater to sequentially flow through the anoxic tank and the oxic tank in a continuous operation manner, wherein the ammonia nitrogen concentration of the wastewater is 25-60mg/L, the ratio of carbon to nitrogen is 2-8, and the proportion of nitrite in the oxic tank reaches above 70%, and the yielding water nitrogen removal efficiency is stabilized at 80%-90%, thus completing the starting process of the shortcut nitrification and denitrification. The rapid starting method has the advantages that the starting time of the shortcut nitrification and denitrification in the A/O process is short, the accumulation rate of the nitrite in the oxic tank reaches above 70%, the nitrogen removal efficiency of the whole process can reach above 90%, and the long-term stable operation of a reactor can be ensured.

The invention relates to a high-pressure reheating gas-steam combined cycle power generation system and a power generation method. The system consists of a gas turbine subsystem and a steam turbine subsystem, wherein the gas turbine subsystem comprises a device used for two-stage air compression, twice combustion as well as high-pressure and medium-pressure twice turbine acting; after primary acting of high-temperature gas, the high-temperature gas enters a medium-pressure combustion chamber and is reheated for secondary acting, so that the average heat absorption temperature of the whole cycle is improved; and at least a one-stage intercooler is arranged between two-stage compressors, and heat flow of the intercooler is connected with the two-stage compressors. The steam turbine subsystem adopts a three-pressure reheating type boiler and a steam turbine, cooling water of the intercooler is connected with high-pressure water, and high-pressure, medium-pressure and low-pressure water as well as the cooling water of the intercooler absorb heat in a staged manner for multiple times, so that heat energy is efficiently utilized. When the high-pressure reheating gas-steam combined cycle power generation system provided by the invention operates with the best parameters, the combined cycle efficiency is increased by 3-5 percentage points compared with a combined cycle system which mainly adopts a gas turbine class F, and the single-machine output power is increased by more than 70%, and reaches 800MW class.

The invention discloses a diesel-type automobile fuel oil preheating device, belonging to the technical field of diesel-type automobile fuel oil preheating. The invention aims to provide the diesel-type automobile fuel oil preheating device which can effectively solve the problems of fuel oil preheating and automobile low-temperature starting, and can lower the fuel oil use cost. The diesel-type automobile fuel oil preheating device comprises a diesel-type automobile main fuel tank, and further comprises a heating fuel oil tank, heat exchangers, a fuel-outlet three-way solenoid valve and a fuel-return three-way solenoid valve, wherein the fuel-outlet three-way solenoid valve is communicated with a heating fuel oil tank fuel outlet pipe and a diesel-type automobile main fuel tank fuel outlet pipe and is connected to a diesel-type automobile main fuel outlet pipe; the fuel-return three-way solenoid valve is communicated with a heating fuel oil tank fuel-return pipe and a diesel-type automobile main fuel tank fuel-return pipe and is connected to a diesel-type automobile main fuel-return pipe; one heat exchanger is arranged in the diesel-type automobile main fuel tank; and the heat exchangers are communicated with a diesel-type automobile water tank through water conveying pipelines. The diesel-type automobile fuel oil preheating device is applicable to use on various diesel-type automobiles.

The invention discloses a large thermal power combination tank furnace for producing basalt continuous fibers. The large thermal power combination tank furnace comprises a batch feeder, a fusing zone, a homogenizing zone and two forming zones, wherein the discharge hole of the batch feeder is connected at one end of the fusion zone; the other end of the fusion zone is connected with one end of the homogenizing zone; the other end of the fusion zone or the homogenizing zone is connected with a chimney by a flue; one forming zone is connected on each of the left end and the right end of the homogenizing zone; a side-insertion electrode is arranged on the side wall of the fusion zone; the electrode is arranged below the melt liquid surface; a combustor is arranged on the top of the fusion zone; a plurality of uniformly and densely arranged gas nozzles are arranged on the side walls of the forming zones; the gas nozzles are arranged above the melt liquid surface; a plurality of leakage plates are uniformly arranged on the bottoms of the forming zones along the length direction of the forming zones; an air-cooled type heat exchanger is arranged on the flue; a hot air outlet of the air-cooled type heat exchanger is connected with an air inlet of the combustor; and a smoke outlet of the air-cooled type heat exchanger is connected with the chimney.

The invention discloses a quick starting method of short-cut nitrification and denitrification of a wastewater treatment system. The method includes the following steps: (1) inoculating aerobic active sludge into a reactor and adding a growth accelerator A; (2) starting the system firstly in an intermittent water feeding manner and then in a continuous water feeding manner; (3) during intermittent operation, when concentration of suspensions in discharged water is lower than 100 mg/L, stopping addition of the growth accelerator A and adding denitrifying bacterial agent and a growth accelerator B; (4) when the ammonia nitrogen in inlet water reaches 400-700 mg/L and removal rate reaches more than 60% within 12 h, changing the operation into continuous water feeding, and adding the denitrifying bacterial agent and the growth accelerator B; and (5) when removal rate of total nitrogen reaches more than 70%, increasing the concentration of ammonia nitrogen until the ammonia nitrogen in inlet water reaches 500-1000 mg/L and the removal rate of total nitrogen reaches more than 80%, and at this time, completing the starting process. The method greatly reduces starting difficulty of short-cut nitrification and significantly reduces operation time, and ensures long-time stable operation of the reactor. The method has high treatment efficiency on wastewater, and can achieve simultaneous removal of ammonia nitrogen, total nitrogen and COD.

The invention discloses a rare earth magnesium alloy welding wire. The rare earth magnesium alloy welding wire is characterized by comprising 2.00-7.00 wt% of Gd, 0.02-2.00 wt% of Y, 0.30-0.80 wt% of Zr, 0.20-0.50 wt% of Sn, 0.02-0.18 wt% of Ag, 0.02-0.18 wt% of Er and the balance magnesium and inevitable impurities. According to the rare earth magnesium alloy welding wire, an Mg-Gd-Y-Zr alloy system capable of being strengthened through heat treatment is selected, and microalloy elements the Gd, the Y, the Zr, the Ag and the Sn are cooperatively added, so that the melt quality is improved, the welding wire quality is improved, and the defects of pore oxide inclusion and the like in a welding joint are reduced; the starting difficulty of a conical surface slippage system is reduced, the plastic deformation capacity of an alloy material is greatly improved by starting a potential slippage system, the extrusion deformation process of a welding wire is coordinated, and the welding wire quality is improved; and low-scale second-phase particles serve as heterogeneous nucleation factors, so that grains are refined, the alloy grain size is controlled, and the extrusion deformation capacity of the material is improved.

The invention discloses a short-distance nitrification/denitrification biomembrane nitrogen-removal reactor and a rapid membrane forming method. According to the invention, a transverse plate a, a vertical plate b, a vertical plate c and a transverse plate d are arranged in the reactor, the reactor is transversely divided into an upper part and a lower part by the transverse plate a , the lower part is a first anaerobic zone, the upper part is vertically divided into three parts by the vertical plate b and the vertical plate c, which are an aerobic zone, a transition zone and a second anaerobic zone; the lower end of the vertical plate b is connected with the transverse plate a, a water passing port is kept at the top of the upper end and the reactor, the upper end of the vertical plate c and the top of the reactor are connected in a sealing mode, the water passing port is kept at the lower end and the transverse plate a, the left end of the transverse plate d and the bottom of the vertical plate c are connected in the sealing mode; the right end and the wall of the reactor are connected in the sealing mode; and the transition zone is filled with palladium-copper supported active carbon catalyst particles. While the membrane is formed, water is introduced from bottom, the sewage passes through the first anaerobic zone, the aerobic zone, the transition zone and the second anaerobic zone in order, then is discharged from the upper part of the reactor, biomembranes at each area in the reactor are subjected to partitioning culture, the biomembrane having specific performance can be better formed, the membrane forming speed is rapid, and the nitrogen removal effect is good.

The invention discloses a high-repetition-frequency compact type industrial-level mode-locking optical fiber laser. Compact type split optical elements are adopted for packaging, so that the number of elements is reduced, the overall stability and reliability are improved, and improvement of repetition frequency can be facilitated; a phase bias technology is integrated in an optical path, so that starting difficulty of the laser is lowered, a lower mode-locking start threshold value is obtained, and the problem of difficulty in self starting of the laser is relieved; an optical fiber wavelength division multiplexing collimator is adopted to replace a conventional optical fiber wavelength division multiplexer and a conventional optical fiber collimator, so that coupling power and efficiency can be improved, and repetition frequency of the mode-locking laser can be effectively improved; and a faraday rotation mirror is adopted to replace a conventional optical fiber type isolator, so that the optical fiber length in the optical fiber laser can be shortened, the laser structure can be simplified and the number of the split elements in the laser can be reduced to the minimum.

The invention provides special underground direct-driven discharging and extracting equipment for coal bed gas, and belongs to the technical field of mining. The equipment comprises a sleeve, a motor, a motor protector, a righting bearing component, a screw pump, a special connector, a special axial force supporting mechanism and an oil pipe, wherein the motor is arranged on the bottom part of a pitshaft; a motor output shaft is connected with an input end of a rotor of the screw pump through the motor protector and the righting bearing component; an output end of the rotor of the screw pump is connected with the special axial force supporting mechanism; the special connector consists of an internal shaft and an outer casing; a stator of the screw pump and the special axial force supporting mechanism are connected by the special connector; the oil pipe is connected between a special pithead and the special axial force supporting mechanism; the sleeve is embedded on the inner wall of the pitshaft; all constitutive elements are sheathed in the sleeve. By applying the equipment, a gap at the aspect of discharging and extracting techniques for coal bed gas highly-deviated wells and multi-branch horizontal wells is filled; compared with a traditional discharging and extracting way, the equipment realizes the multiplied increase of gas production; meanwhile, the floor area of the discharging and extracting equipment is decreased.

The invention provides a paver start control method and a paver. The paver start control method comprises the following steps that a paver starting instruction is received; altitude information and engine temperature information of the paver are acquired; according to the altitude information and the engine temperature information, the working condition state of an engine of the paver is determined; the operation state of a clutch of the paver is controlled according to the working condition state; and the engine is controlled to be started according to the operation state of the clutch, wherein the clutch is arranged between the engine and the working load, and the clutch is used for connecting or disconnecting the engine and the working load so that the engine can be started with the working load or without the working load. According to the technical scheme, the operation state of the clutch can be controlled according to the working condition state of the paver so that the paver can start the engine without the working load in a plateau area or a low-temperature environment, the starting difficulty of the engine is reduced, and the paver is easy to operate.

The invention provides a clutch and a paver. The clutch comprises a box body, an input shaft, a clutch assembly and an oil supply device. The input shaft is rotationally connected to the box body, atleast part of input shaft stretches out from the box body, and the input end of the input shaft can be in transmission connection with a drive device. The first end of the clutch assembly is fixedly connected with the input shaft, the second end of the clutch assembly is used for outputting power, the second end can be connected or disconnected with the first end, and when the second end is connected with the first end, transmission connection between the second end and the input shaft is achieved. The oil supply device is arranged at the end, stretching out of the box body, of the input shaft, the drive end of the oil supply device is in transmission connection with the input shaft, and the oil supply device communicates with the clutch assembly. The oil supply device supplies oil to theclutch assembly, so that the second end is in transmission connection with the first end. Oil is drained to the oil supply device through the clutch assembly, so that the second end and the first endare disconnected. By means of the technical scheme, the starting difficulty of the drive device can be reduced, the clutch is provided with an oil source, and the application range is wide.

The invention discloses a multifunctional heating device for a vehicle, and relates to heating of air in the vehicle, preparation of domestic hot water in the vehicle, preheating and starting of an engine in an alpine region, full utilization of heat generated during working of the engine and waste heat after shutdown, comprehensive utilization of heat generated by a combustor, reduction of consumption of resources and energy while embodying convenience of driving and living, and energy conservation and emission reduction. According to the multifunctional heating device, through high integration of a combustion chamber, a domestic water heat exchange chamber, a cooling liquid heat exchange chamber, an air heat exchange chamber and a tail gas heat exchanger, efficient utilization of energyis achieved through few resources, and the device is compact in structure, convenient to install, intelligent in control and convenient and fast to use.

The invention relates to a transmission method based on belt conveying. The transmission method includes the following steps that S1, a motor is started, the motor drives a driving shaft to rotate, and the driving shaft drives a first fixed plate and a centrifugal slide groove to rotate; S2, the motor is started close to zero load, and as the rotating speed of the motor increases, a first ball bears increasing centrifugal force and starts to move in the direction away from the axis of the driving shaft; S3, the left side of the centrifugal slide groove makes contact with the right side of a V-shaped belt and gradually squeezes the V-shaped belt, and the upper end of the V-shaped belt moves up and starts to be tensioned and rotate; and S4, a transmission wheel drives a limiting sleeve to rotate through a second ball, the limiting sleeve and a second fixed plate drive a driven shaft to rotate, and the driven shaft drives a belt conveyer to operate.