83results about How to "Strong disturbance" patented technology

The invention belongs to the technical field of a piezoelectric ceramic driving power supply and relates to a piezoelectric ceramic driving power supply and a control method thereof. The driving power supply specifically comprises a power supply module, a control module, a power amplification module and a detection and regulation module, wherein a piezoelectric ceramic self-adaptive time-varying sliding mode control method is designed for a DSP (Digital Signal Processor) controller of the control module so as to realize the accurate control on the output displacement of a piezoelectric ceramic actuator. The piezoelectric ceramic driving power supply and the control method thereof can be used under the action of low DC voltage input, have the advantages of wide frequency response and high precision, can overcome the nonlinear characteristic of the piezoelectric ceramic, can provide three-way driving voltage output to simultaneously provide mutually independent driving voltage for 1-3 piezoelectric ceramic working platforms, and can be widely used in high-precision pointing and tracking of airborne and vehicle-mounted radar antennae, thereby having fine application prospects.

The invention provides a gas-liquid two-phase mixed jet micro-channel heat sink. The heat sink comprises an upper cover plate, a gas-liquid mixed jet structure, a micro-channel plate, a heater and a base, wherein the gas-liquid two-phase mixed jet structure comprises a cooling liquid inlet, a cross-flow liquid inlet, a jet entry cavity, jet holes and a gas-liquid mixed flow outlet. Cooling liquidfirst flows in from the cooling liquid inlet, a part flows to the micro-channel plate through the cross-flow liquid inlet to form cross-flow liquid for heat exchange, and the other part flows to the jet entry cavity, mixes with gas flowing in from an inlet port, then is jet to the micro-channel plate through the jet holes for heat exchange, and is simultaneously mixed with the cooling liquid flowing from the cross-flow liquid inlet to micro-channels, so that the cooling liquid in the micro-channels is disordered, and finally flows out from the gas-liquid mixed flow outlet. The cross-flow liquid in the micro-channels is impacted by gas-liquid two-phase mixed jet to realize enhanced heat transfer and suppress micro-channel boiling instability. In addition, the heat sink also has the characteristics of compact structure, small size, simple manufacturing process and the like.

The invention provides an ultrasonic wave and pressure rotary atomizer, comprising an ultrasonic wave energy converter and a pressure rotating liquid nozzle, wherein the ultrasonic wave energy converter comprises an energy converter back cover plate, a pretightening bolt and a pretightening nut, piezoelectric crystal and a nozzle front cover; the pressure rotating liquid nozzle comprises a drainage member, a gasket, a swirl member and a nozzle head; the piezoelectric crystal is clamped between the nozzle front cover and the energy converter back cover plate by the pretightening bolt and the pretightening nut; the nozzle head is installed on the drainage member and arranged at the front end of the nozzle front cover; the drainage member and the swirl member are arranged in the nozzle head; the gasket is clamped between the drainage member and the swirl member; an O-shaped seal ring is arranged between the nozzle head and the nozzle front head; and a swirl chamber is arranged in the middle of the swirl member. The atomizer can further generate liquid drops the Sauter diameters of which are several microns to one micron on the basis of the pressure rotating nozzle, thereby overcoming the pressure bottleneck of the pressure rotating nozzle after the size of the liquid drop is decreased to a certain degree.

The invention discloses a system and a method for controlling the water level of a deaerator. The system comprises a water level acquisition module and an internal model controller, wherein the water level acquisition module is used for acquiring the current water level of the deaerator and transmitting the acquired current water level to the internal model controller; and the internal model controller is used for regulating the valve position of a deaerator regulating valve according to both the set water level and the current water level of the deaerator, thereby changing the rate of flow of the condensed water and realizing the control on the water level of the deaerator. The system / method can obviously improve the regulation quality of the water level of the deaerator in a generator set for both a steady-state process and a dynamic-state process.

A method for frequency- and time-selective interference suppression for a communication system based on OFDM, and a receiver therefor. To achieve a much lower bit error rate at the output of the receiver or to permit greater interference or a lower signal-to-noise ratio (in a prior art L-DACS1 receiver, at least 45 nautical miles) for the same transmission power, the invention provides: a filter bank pulse blanking method FBPB in which the sampled received signal is applied to a blanking unit for frequency-selective pulse blanking, which blanking unit consists of an analysis filter bank having M sub-bands; a module for frequency-selective pulse blanking of the sub-band signals; and a synthesis filter bank, which reassembles the signal. The analysis filter bank, which breaks down the received signal into multiple sub-bands on a frequency-selective basis, is used before OFDM windowing, such that the sub-band breakdown applies pulse blanking on a sub-band-selective basis.

The invention provides a functional temperature-resistant anti-salt profile control agent which comprises a functional acrylamide prepolymer, a cross-linking agent, a stabilizer, a performance regulator, a deoxidant and water. The functional acrylamide prepolymer is shown as a formula (I). The functional temperature-resistant anti-salt profile control agent disclosed by the invention is low in surface injection viscosity, controllable in gelatinization time, high in gelatinization strength and stable in performance, has excellent temperature-resistant anti-salt properties, has long effective stable period while acting on high-temperature (90-140 DEG C) or high-salt (40000-260000mg.L<-1>, Ca<2+>, Mg<2+>) oil deposit, can maintain excellent plugging strength for a long time, does not have anobvious dehydration sign, can obviously improve the oilfield development effect, and provides a reliable technical support for precipitation and oil increase of high water-cut oilfields in China. Thestructural formula is as shown in the specification.

The invention relates to a plate-shell heat exchanger with oval corrugated plates. The multiple oval corrugated plates form a corrugated plate bundle, each corrugated plate is provided with two corner holes correspondingly, the corrugated plate bundle is arranged in a shell, the shell is provided with a plate pass inlet and a plate pass outlet, and the plate pass inlet and the plate pass outlet are communicated through the corner holes in the corrugated plates; a guide block is formed between the corrugated plate bundle and the shell and divides the annular area between the corrugated plate bundle and the shell into a shell pass inlet cavity and a shell pass outlet cavity; the shell is provided with a shell pass inlet and a shell pass outlet correspondingly. The plate-shell heat exchanger is characterized in that the corrugated plates are oval, and the two corner holes of each corrugated plate are formed in the upper portion and the lower portion of the corrugated plate respectively.

The invention discloses a coal mine gas pre-extracting drilling flexible hole sealing system and method. The system comprises a hole sealing mechanism, a gas extracting mechanism and a grouting mechanism. The hole sealing mechanism comprises an extracting pipe, a grouting pipe and two pressurizing pipes, all of which are arranged side by side. One end of gas extraction serves as the inner end of agas pre-extracting drilling space, and the other end of gas extraction serves as the outer end of the gas pre-extracting drilling space. A front airbag, a middle airbag and a rear airbag are sequentially arranged in the gas pre-extracting drilling space from outside to inside. The middle airbag is composed of an upper airbag and a lower airbag which are symmetrically arranged up and down. An extracting pipe penetrates through the front airbag and the rear airbag and is clamped between the upper airbag and the lower airbag, one of the two pressurizing pipes sequentially penetrates through thefront airbag and the upper airbag from outside to inside into the rear airbag, and the other of the two pressurizing pipes sequentially penetrates through the front airbag and the lower airbag from outside to inside into the rear airbag. The grouting pipe penetrates through the front airbag and is clamped between the upper airbag and the lower airbag. The method includes the steps of drilling, hole washing, grouting hole sealing and gas extracting. The hole sealing effect can be effectively improved.

The invention provides an industrial pulverized coal boiler boiler-inside denitration combustion device with a reducing agent being sprayed to a main combustion area of a combustor, relates to the boiler boiler-inside denitration combustion device and aims to solve the problems of high NOx emission quantity of present industrial pulverized coal boilers and poor adaptive capacity of boiler-inside denitration on load. The industrial pulverized coal boiler boiler-inside denitration combustion device comprises the combustor, a recirculating smoke pipeline and a draft fan, the combustor comprises aprimary air pipe, a direct current secondary air pipe, a swirl flow inner secondary air pipe, a swirl flow outer secondary air pipe, a first axial swirl flow blade and a second axial swirl flow blade, and the industrial pulverized coal boiler boiler-inside denitration combustion device further comprises a mixer, an amino reducing agent conveying pipe, a thick pulverized coal conveying pipe, threesecondary air pipelines, three secondary air pipeline valves, three recirculating smoke pipeline valves, three recirculating smoke branch pipelines, four first-stage overfire air nozzles and a plurality of second-stage overfire air nozzles. The industrial pulverized coal boiler boiler-inside denitration combustion device with the reducing agent being sprayed to the main combustion area of the combustor is used for the field of boiler combustion.

The invention relates to a combustion system of a diesel engine, which belongs to the field of injection and combustion of fuel of diesel engines. The combustion system mainly comprises a combustion chamber, wherein the combustion chamber is arranged at the top of a piston with the diameter smaller than 150mm; and a fuel beam of a fuel injector positioned in the center of a cylinder cover is matched with the combustion chamber. The fuel injector is formed by combining one or more circular injecting holes and combined injecting holes with different hole diameters and matched with a shallow basin type combustion chamber or a shallow omega type combustion chamber by utilizing oil beams with different penetration distances and different spreading angles. Because the combustion system is combined by adopting various injecting holes, the optimal matching between the fuel beams and the combustion chamber is easy for realization; the intense disturbance can be formed when the fuel in injecting sub-holes of the combined injecting holes are converged, the turbulence function is added, and the atomization is improved; and the combustion system which configures a combined injecting hole nozzle with large spray diffusance and a long penetration distance and a short penetration distance of the adjacent fuel beams on the combustion chamber greatly improves the air utilization ratio, promotes combustion, reduces discharge and heat transfer loss and improves economy.

The invention relates to an ammonia torch burner which comprises a gas inlet barrel, a pilot burner ignition assembly, a fuel gas conveying part, a premixer and a combustion chamber. The premixer comprises a mixing cavity and an expanded cavity which is formed at the upper end of the mixing cavity and is communicated with the mixing cavity; the mixing cavity is formed at the upper end of the gas inlet barrel and is communicated with the gas inlet barrel; the upper end face of the gas inlet barrel extends into the mixing cavity; the combustion chamber is formed at the upper end of the expanded cavity and is communicated with the expanded cavity; the fuel gas conveying part comprises a fuel gas conveying main pipe, a fuel gas ring-shaped pipe communicated with the fuel gas conveying main pipe, and a plurality of fuel gas output tubes which are peripherally distributed on the fuel gas ring-shaped pipe and are communicated with the fuel gas ring-shaped pipe; the fuel gas ring-shaped pipe sleeves the periphery of the gas inlet barrel; spray nozzles of the fuel gas output tubes are radially inclined towards the axis of the gas inlet barrel and axially extend upwards into the mixing cavity; the spray nozzles adopt a necking-down form. The ammonia torch burner can realize complete combustion of ammonia and avoid the environment problem caused by residual ammonia.

The invention relates to a reduction furnace, in particular to a reduction furnace for smelting metal magnesium. The reduction furnace for smelting metal magnesium comprises a furnace body, a steel frame supporting the furnace body, furnace walls, a reduction tank arranged on the furnace body, a vacuum system connected with the reduction tank and a combustion and fume systems arranged on two sides of the furnace body, and is characterized in that: at least two layers of burners capable of serving as fume outlet are arranged on furnace walls on the two sides of the reduction furnace; and the nozzles of the burners face the hearth of the reduction furnace. The reduction furnace has the advantages that: the unique combustion system is adaptable to various of flues; the temperature of the hearth is low; the loss is little; meanwhile, as fume waste heat recovery and storage technology is adopted, the air temperature for combustion is improved, the combustion effect is obviously improved and the temperature of exhaust fume of the reduction furnace is obviously reduced.

The invention provides a horizontal boiler with SNCR and OFA arranged in a staggered manner and relates to an industrial boiler. The horizontal boiler with the SNCR and the OFA arranged in the staggered manner aims at solving the problems that a horizontal industrial coal powder boiler in the prior art is high in denitration cost, consequently, the NOx emission amount of an industrial coal powderboiler is high, the coal powder over-fire effect is poor, the adaptive capacity on load changes is poor, and the heat efficiency is low. The horizontal boiler with the SNCR and the OFA arranged in thestaggered manner comprises a combustor, a hearth, an upstream flue, a set of primary amino reducing agent spraying ports, a set of primary over-fire air spraying ports, a set of secondary over-fire air spraying ports, a set of secondary amino reducing agent spraying ports and two sets of temperature sensors; the combustor is installed at the front end of the hearth; the upstream flue is communicated with the top of the rear end of the hearth; the primary amino reducing agent spraying port and the primary over-fire air spraying port are fixedly installed on the side wall, from the front end tothe back end, of the hearth; and the secondary over-fire air spraying port and the secondary amino reducing agent spraying port are sequentially installed on the side wall of the upstream flue from bottom to top. The invention is used in the industrial boiler coal powder combustion field.

The invention relates to an antagonistic attack and defense method and system based on a PID controller. The method comprises the following steps: S1, inputting a training data set and a machine learning model f; s2, training a machine learning model f according to the input training data set; and S3, judging whether the loss function J is converged or not, if the loss function J is not converged,training the machine learning model f by adopting the adversarial sample xadv generated by the adversarial attack based on the PID controller and the original data x as a training data set until theloss function J is converged to obtain the trained machine learning model f, and if the loss function J is converged, directly outputting a result. According to the invention, a higher attack successrate can be realized under the same disturbance constraint limitation through a process of generating an adversarial sample by an adversarial attack, and the invention can be used for evaluating the performance of a machine learning model and the effectiveness of an adversarial defense method; adversarial training on the machine learning model by using adversarial samples generated by adversarialattacks can be used as a defense method to improve the robustness of the model.

The invention belongs to the technical field of chemical equipment manufacturing. In order to overcome the defect of low heat transfer rate in a traditional heat exchanger, the invention discloses an oblate staggered pipe for the heat exchanger, which is formed by sequentially connecting a flat pipe, a circular pipe, a flat pipe, a flat pipe, a circular pipe and a flat pipe, the length of each pipe is identical, the two flat pipes adjacent to the circular pipes are mutually perpendicular and shaped like a cone and gradually transition to the adjacent circular pipes, the two adjacent cone-shaped flat pipes transition to the maximum sections of each other in parallel, with identical corresponding sizes, and the maximum section perimeter of each flat pipe is identical to the perimeter of each circular pipe. The oblate staggered pipe is suitable for a fixed pipe plate type heat exchanger, a U-shaped pipe type heat exchanger or a floating head type heat exchanger, complex flow taking a wave mode as a main characteristic is generated in fluid in a pipe side and a shell side, pure counter flow is formed inside and outside a heat exchanger pipe, stronger agitation is achieved due to a larger impulsive force particularly at the changing position of the pipe shape so as to form staggered turbulence, thereby a heat transfer process is reinforced to a larger extent. Moreover, the surface of the pipe wall can be automatically cleaned under the action of a medium in the shell side and scales are difficult to form.

The invention discloses a high-efficiency clean pulverized coal combustion industrial boiler device in the field of combustion devices with combustors. The high-efficiency clean pulverized coal combustion industrial boiler device comprises a hearth, a cyclone pulverized coal burner, a high-temperature vortex burnout device, a transition chamber, a convection flue and a tail flue, wherein the high-temperature vortex burnout device is arranged at an upper outlet of the hearth; the cyclone pulverized coal burner is arranged on the front and rear walls or the left and right walls on the lower part of the hearth in a hedge mode; the transition chamber is arranged on the rear part of the high-temperature vortex burnout device; the inlet of the convection flue is connected with the rear part of the transition chamber; the outlet of the convection flue is connected with the tail flue. According to the device, the defect that the organizing combustion effect in a short and small space of an industrial boiler is not ideal is overcome.

The invention relates to a device for fluidization loading or taking out a low-temperature protection agent for a biological tissue. The device is characterized by comprising a solution circulating module, a solution supplying module, a sample container, a temperature control box and a controller. The sample container is arranged in the temperature control box; the sample container is provided with a liquid inlet and a liquid outlet; the solution circulating module communicates with the liquid inlet and the liquid outlet of the sample container, so that a solution flows through the sample container in a circulating way; the solution supply module communicates with the solution circulating module so as to supply the solution to the solution circulating module; the controller is respectively and electrically connected with the solution supplying module, the solution circulating module and the temperature control box. According to the automation device, the threshold treatment temperature can be reduced, and meanwhile, the speed rate for loading and taking the low-temperature protection agent in and out of the biological tissue is accelerated.

The invention relates to a method for grinding and scattering solid particles in liquid. In the method, a specially designed machine is adopted for processing liquid containing solid particles; the machine generates vacuoles groups in the liquid by means of mechanical rotation, grinds the solid particles under the massive impact of the vacuole and scattering the particles in the liquid.

The invention provides a heat dissipation structure, an electric appliance box and an air conditioner. The heat dissipation structure comprises: a connecting plate, wherein the connecting plate is provided with a first extending end and a second extending end which are oppositely arranged along a first preset direction; and a heat dissipation assembly arranged on the connecting plate and comprising a first fin assembly and a second fin assembly, wherein the first fin assembly and the second fin assembly are arranged in a spaced mode in the second preset direction to form a heat dissipation gap, a preset included angle is formed between the second preset direction and the first preset direction, the first fin assembly comprises a plurality of first fins arranged at intervals, each first finis obliquely arranged relative to a second preset direction, the second fin assembly comprises a plurality of second fins arranged at intervals, and the second fins are obliquely arranged relative tothe second preset direction. The heat dissipation structure solves the problem that a heat dissipation structure in the prior art is poor in heat dissipation effect.

The invention discloses a detection method for predicting a cave of a shallow portion via surface wave spectrum disturbance. The detection method comprises that S1) one measuring line is arranged overa suspected cave area underground; S2) a vibration response signal of a measuring point of the measuring line is recorded; S3) the measuring line is deflected for certain angle, the step S2) is repeated, and the measuring line is continued to be deflected till the suspected cave area is covered completely; S4) cylindrical geometric attenuation correction is carried out all vibration response signals, and an offset-wavelength domain amplitude spectrum cloud atlas of different measuring lines of the suspected cavity area is obtained via a series of transformation; S5) a reference measuring lineis arranged in an area free of cave influence, vibration responses signals of different measuring points of the reference line are recorded, and an offset-wavelength domain amplitude spectrum cloud atlas of the reference line is obtained; and S6) the offset-wavelength domain amplitude spectrum cloud atlas of the measuring lines of the suspected cavity area is compared with that of the reference line, and the buried depth and position of the cave are predicted from the wavelength and offset corresponding to the spectrum disturbance characteristic of the suspected area. Thus, the near-surface cave detection problem can be solved effectively.

The invention discloses an electronic device heat dissipation device based on an ultrasonic energy converter. The electronic device heat dissipation device comprises one or multiple ultrasonic energyconverters arranged to close to a heat source formed by the electronic device; the ultrasonic energy converter is used for forming acoustic streaming in a disturbance way to perform heat dissipation on the electronic device; on the one hand, the ultrasonic energy converter is used as the power component of a heat exchange medium, so that the produced ultrasonic wave can disturb the heat exchange medium so as to form the acoustic streaming flowing through the electronic device heat source; compared with the traditional air-cooling and liquid-cooling and like heat dissipation way, the heat dissipation device has the advantages of being low in power consumption, silent, insensitive to the dust and high in reliability; on the other hand, the heat dissipation device can work as normal by arranging the ultrasonic energy converter on a medium channel passing through the heat source and through the supporting of a simple control circuit; the heat dissipation device has the features of being convenient for layout and simple in circuit, and the heat dissipation can be applied to the integrated circuit under multiple environments.

The invention provides an odor and sewage treatment system, which comprises a spray tower, a sewage collection tank is arranged at the bottom in the spray tower, and a gas inlet, a gas outlet and a sewage discharge pipe orifice are formed in the spray tower. The odor and sewage treatment system further comprises an ozone micro-bubble generation assembly, and the ozone micro-bubble generation assembly comprises an ozone generator and a first micro-bubble generator communicated with the ozone generator. The ozone generator generates ozone and conveys the ozone into the first microbubble generator. The first microbubble generator mixes ozone with water in the first microbubble generator and generates ozone microbubbles. The first microbubble generator is communicated with a sewage collectingtank through a first pipeline, and the first microbubble generator is used for conveying ozone microbubbles into the sewage collecting tank. By designing an ozone micro-bubble generation assembly, ozone micro-bubbles can be provided for the sewage collecting tank in the spray tower through the ozone micro-bubble generation assembly, so that the treatment efficiency and effect of water liquid (dissolved with harmful components in odor) in the sewage collection tank are improved.

The invention relates to a reduction furnace, in particular to a reduction furnace for smelting metal magnesium. The reduction furnace for smelting metal magnesium comprises a furnace body, a steel frame supporting the furnace body, furnace walls, a reduction tank arranged on the furnace body, a vacuum system connected with the reduction tank and a combustion and fume systems arranged on two sides of the furnace body, and is characterized in that: at least two layers of burners capable of serving as fume outlet are arranged on furnace walls on the two sides of the reduction furnace; and the nozzles of the burners face the hearth of the reduction furnace. The reduction furnace has the advantages that: the unique combustion system is adaptable to various of flues; the temperature of the hearth is low; the loss is little; meanwhile, as fume waste heat recovery and storage technology is adopted, the air temperature for combustion is improved, the combustion effect is obviously improved and the temperature of exhaust fume of the reduction furnace is obviously reduced.

The invention discloses Eu<3+>-activated barium strontium fluoborate red fluorescent powder as well as preparation and application thereof. The general chemical formula of the fluorescent powder is Ba<3-x>Eu<x>Sr2B4O10F2, wherein x is the substitution molar ratio of Eu<3+> to Ba<2+>, and x is greater than or equal to 0.005 and less than or equal to 0.35. The method comprises the following steps: (1) preparing fluorine-free barium strontium borate precursor powder Ba<2-x>EuxSr2B4O10 by using a chemical sol-gel method; and (2) adding barium fluoride and ammonium fluoride into the prepared fluorine-free barium strontium borate precursor powder, fully mixing all the components, tabletting the mixture, and then preparing the Eu<3+>-activated barium strontium fluoborate red luminescent fluorescent powder Ba<3-x>Eu<x>Sr2B4O10F2 through solid-phase sintering. The red fluorescent powder is in a pure phase and uniform in particle, can emit red light with the central wavelength of 615 nanometersunder excitation of near ultraviolet light 395 nanometers, and is high in luminous intensity and good in thermal stability; therefore, the red fluorescent powder can be used for preparing an illumination or display device taking near ultraviolet light as an excitation light source.

The invention discloses Tb<3+>-activated activated barium strontium fluoborate green fluorescent powder as well as preparation and application thereof. The general chemical formula of the fluorescentpowder is Ba<3-x>Tb<x>Sr2B4O10F2, wherein x is the substitution molar ratio of Tb<3+> to Ba<2+>, and x is greater than or equal to 0.005 and less than or equal to 0.35. The method comprises the following steps: (1) preparing fluorine-free barium strontium borate precursor powder Ba<2-x>TbxSr2B4O10 by using a chemical sol-gel method; and (2) adding barium fluoride and ammonium fluoride into the prepagreen fluorine-free barium strontium borate precursor powder, fully mixing all the components, tabletting the mixture, and then preparing the Tb<3+>-activated barium strontium fluoborate green luminescent fluorescent powder Ba<3-x>Tb<x>Sr2B4O10F2 through solid-phase sintering. The green fluorescent powder is in a pure phase and uniform in particle, can emit green light with the central wavelength of 545 nanometers under excitation of near ultraviolet light 276 nanometers, and is high in luminous intensity and good in thermal stability; therefore, the green fluorescent powder can be used forpreparing an illumination or display device taking near ultraviolet light as an excitation light source.

The invention relates to a tubular flow disturber which can strengthen material transmission and heat transmission, and a relative operation, wherein said device comprises: fluid input tube, fluid disturb tube, and fluid outlet tube; and the operation comprises: (1), the material via the fluid input tube enters into the fluid disturb tube, through needed disturb time or disturb degree, to get out at the fluid outlet tube; (2), filling heating or cooling medium into the muffle outside the fluid disturb tube, to exchange heat with the inside fluid; (30, the fluid disturb tube contains core tube filled with heating or cooling medium to exchange heat with the fluid of fluid disturb tube. The invention can be used in the area with only physical reaction or chemical reaction, with significant effect and simple operation.

The invention discloses a combustible solid waste pyrolysis device and a pyrolysis method. The pyrolysis device comprises a fluidized bed pyrolysis reactor and a fluidized bed combustion reactor whichadopt heat carrier bed material interactive circulation. Combustible solid waste fuel is pyrolyzed in the fluidized bed pyrolysis reactor, and a heat carrier bed material overflows and is sent to thecombustion reactor through a star-shaped return feeder; the heat carrier bed material is heated again by utilizing heat released by pyrolysis oil gas combustion in the combustion reactor; and the heated heat carrier bed material enters the pyrolysis reactor again through a fluidized bed return feeder. Heat generated by combustion is transmitted to a pyrolysis process by utilizing interactive circulation of the heat carrier bed material between the two reactors, so that the problem of non-uniform temperature in reactors caused by heat transfer of conventional reactors is solved; the star-shaped return feeder for pyrolysis material returning achieves a good sealing effect, the fluidized bed material return feeder for combustion material returning avoids high oxidation and deformation of mechanical moving parts, and meanwhile the solid circulation flux can be controlled.

A method for frequency- and time-selective interference suppression for a communication system based on OFDM, and a receiver therefor. To achieve a much lower bit error rate at the output of the receiver or to permit greater interference or a lower signal-to-noise ratio (in a prior art L-DACS1 receiver, at least 45 nautical miles) for the same transmission power, the invention provides: a filter bank pulse blanking method FBPB in which the sampled received signal is applied to a blanking unit for frequency-selective pulse blanking, which blanking unit consists of an analysis filter bank having M sub-bands; a module for frequency-selective pulse blanking of the sub-band signals; and a synthesis filter bank, which reassembles the signal. The analysis filter bank, which breaks down the received signal into multiple sub-bands on a frequency-selective basis, is used before OFDM windowing, such that the sub-band breakdown applies pulse blanking on a sub-band-selective basis.