Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

61results about How to "Normal response" patented technology

System for performing hydrochloric acid waste fluid spray roasting through industrial waste heat and control method

The invention is applicable to the fields of metallurgical, machining and chemical industries, and provides a system for performing hydrochloric acid waste fluid spray roasting through industrial waste heat and a control method. The system comprises a roasting furnace, wherein one or more waste heat flue gas nozzles are arranged in the furnace bosh tangential direction of the roasting furnace; each waste heat flue gas nozzle is connected with a waste heat supply system through a waste heat supply pipe; a waste heat flow regulating valve, a waste heat flow meter and a waste heat switching valve are arranged on each waste heat supply pipe; the system comprises a main control board; a temperature sensor is arranged at the furnace top or on the furnace bosh of the roasting furnace; the main control board is connected with the temperature sensor, the waste heat flow regulating valves and the waste heat flow meters. The system uses industrial waste heat as a heat source, provides reaction temperature and heat for the roasting furnace for high-temperature decomposition, uses fuel gas as an auxiliary heat source under the condition that the waste heat source cannot be provided or the heat cannot meet requirements, and guarantees that the reaction is performed normally. The system has an obvious energy-saving effect, and is low in running cost.
Owner:WISDRI ENG & RES INC LTD

Efficient metallurgical rotary kiln for treating lead-zinc oxide ore

PendingCN106766870AGuaranteed reduction temperatureNormal responseRotary drum furnacesMetallurgical industryFuel gas
The invention relates to an efficient metallurgical rotary kiln for treating lead-zinc oxide ore and belongs to the field of structural designs and application of non-ferrous metallurgical industry equipment. The efficient metallurgical rotary kiln for treating lead-zinc oxide ore comprises a rotary kiln body, a feed opening, air blasting equipment, an air inlet pipe, a heat exchanger, a hot air adding opening, a discharge opening, an exhaust gas outlet, a rotary kiln support roller, a rotary kiln mechanical transmission component and a hot air pipe. As the heat exchanger is added to the outside of a reduction area to heat air produced by the air blasting equipment up to about 500 DEG C, air required for in-kiln reaction is provided while an in-kiln material is heated up, accordingly, the temperature of the reduction area reaches 1,200-1,300 DEG C, and normal reaction is guaranteed. Besides, a gas nozzle is arranged at the head part of the rotary kiln, and if the temperature of the reduction area does not reach 1,200-1,300 DEG C, the gas nozzle can be ignited for heating, so that the temperature of the reduction area is guaranteed, effective volatile reaction of the material in the reduction area is ensured, meanwhile, in-kiln material coking is reduced, and the production cycle of the rotary kiln is prolonged.
Owner:YUNNAN CHIHONG ZINC & GERMANIUM

Brushless DC motor control method based on interval type-2 fuzzy variable integral PID

The invention discloses a brushless DC motor control method based on interval type-2 fuzzy variable integral PID, and the method comprises the steps: analyzing the behavior decision of a brushless direct current motor rotating speed controller PID, and selecting main factors affecting the decision; determining a factor set influencing the state of the brushless direct current motor; determining acomment set influencing the state of the brushless direct current motor; determining a weight set influencing the state of the brushless direct current motor; carrying out the fuzzy evaluation to determine a comprehensive evaluation matrix; evaluating the current state of the rotating speed PID controller of the brushless direct current motor according to the maximum membership principle; establishing a dynamic rule base by applying a time-varying domain of discourse; determining the PID control parameters according to a dynamic rule base; and correcting the PID control parameters by using a variable integral algorithm to obtain a control voltage. According to the brushless DC motor control method based on interval type-2 fuzzy variable integral PID, the motor rotating speed response can be improved, and the adjusting time can be shortened. And the defects of poor robustness, low influence speed and the like are overcome, so that the motor is more stable and reliable in the operation process.
Owner:HUNAN SHENGDING TECH DEV CO LTD

Multi-section type heat insulation fixed bed reactor for PX production

The invention discloses a multi-section type heat insulation fixed bed reactor for PX production. The multi-section type heat insulation fixed bed reactor comprises a basic component, a skirt support and a reactor body, wherein a first reaction region, a second reaction region, a third reaction region and a fourth reaction region are arranged in the reactor body in sequence from top to bottom; a fixed bed layer filled with a catalyst is arranged above each reaction region; a sieve pipe distributor is arranged below each reaction region; a first cold material inlet is formed in the side wall between the first reaction region and the second reaction region; a second cold material inlet is formed in the side wall between the second reaction region and the third reaction region; a heat exchange pipe outlet and a heat exchange pipe inlet are formed between the third reaction region and the fourth reaction region. The multi-section type heat insulation fixed bed reactor for PX production solves the problems that the existing fixed bed reactor is poor in heat dissipation effect, easily causes inactivation of catalysts and high loss of the catalysts and affects the reaction efficiency; meanwhile, by the adoption of material feeding from the side wall, heat in the reactor can be effectively used, and the heat supply cost is reduced.
Owner:CHONGQING TIANYI HENGHUA TECH CO LTD

Air-cooled proton exchange membrane fuel cell metal bipolar plate and fuel cell thereof

The invention relates to an air-cooled proton exchange membrane fuel cell metal bipolar plate and a fuel cell thereof. The bipolar plate comprises a first metal plate and a second metal plate. The first metal plate and the second metal plate are each provided with a first metal frame, a fuel gas inlet and an oxidizing agent inlet which are formed in one side of the first metal frame, and a fuel gas outlet and an oxidizing agent outlet which are formed in the other side of the first metal frame, and the fuel gas inlet and the fuel gas outlet in the first metal plate are communicated with the first metal frame. The oxidizing agent inlet and the oxidizing agent outlet in the second metal plate communicate with the first metal frame, a gas flow channel is formed in the first metal frame and comprises first buffer flow channels arranged at the head end and the tail end of the gas flow channel correspondingly, and each first buffer flow channel comprises a plurality of flow dividing columns distributed at equal intervals; and a flow dividing groove is formed between every two adjacent flow dividing columns, and the end, away from the flow dividing columns, of each flow dividing groove inclines in the direction away from the first metal frame. The effect of improving the reaction rate of the fuel cell is possessed.
Owner:嘉寓氢能源科技(辽宁)有限公司

High-precision dropping funnel

ActiveCN111249997APrevent Unplanned OutagesConstant drip rateFeed devicesElectrical connectionControl theory
The invention discloses a high-precision dropping funnel. The high-precision dropping funnel comprises a dropping funnel body, wherein a liquid outlet is formed in the lower end of the dropping funnelbody; a shell is arranged at the lower end of the dropping funnel body; the inner cavity of the shell communicates with the inner cavity of the dropping funnel body through the liquid outlet; a hermetically sliding magnetic attraction block is arranged at the liquid outlet; a plurality of grooves are formed in positions, close to the dropping funnel body, of the peripheral side of the magnetic attraction block; an elastic piece is arranged between the bottom side of the magnetic attraction block and the bottom side of the inner cavity of the shell; an electromagnet is fixed to the bottom sideof the shell; the input end of the electromagnet is electrically connected with the output end of the controller; the controller controls the electromagnet to work periodically; the electromagnet works to attract the magnetic attraction block to move downwards; the grooves move into the shell from the interior of the dropping funnel body; a communicating hole allowing the interior and the exterior of the shell to be communicating is formed in the lower side of the shell; and the communicating hole communicates with the upper end of a liquid outlet pipe. According to the high-precision dropping funnel, constant-speed dropping is achieved, a dropping speed is constant, accidental interruption of dropping is avoided, and the dropping speed is convenient to adjust.
Owner:李翠芝

Liquid separator

The invention relates to the technical field of liquid separation equipment and relates to a liquid separator. The liquid separator comprises a base and supporting legs, supporting legs distributed left and right are fixedly connected to the upper end face of the base. Liquid separation tanks are fixedly connected to the upper end surfaces of the supporting legs, the center of the upper end surface of the liquid separation tank is communicated with a feeding pipe, the outer side of the feeding pipe is fixedly connected with a filtering device, a second valve is arranged below the filtering device, the rear end face of the second valve is fixedly connected with a feeding pipe, an air injection pipe is arranged above the filtering device, the right end face of the air injection pipe communicates with the feeding pipe, supporting columns are fixedly connected to the left side and the right side of the lower end face of the filtering device, and the lower end faces of the supporting columns are fixedly connected with the liquid separation tanks. According to the liquid separator, through the arrangement of a filtering frame, a limiting threaded rod, a nut and a screen, liquid can be filtered in advance, it is guaranteed that the liquid discharged into the liquid separation tank does not contain impurities, it is guaranteed that the reaction in the liquid separation tank is conducted normally, the product quality is guaranteed, and meanwhile the service life of the liquid separation tank is guaranteed.
Owner:付学才

Method for preparing silicon tetrafluoride and anhydrous hydrogen fluoride by taking sodium fluorosilicate as raw material

The invention discloses a method for preparing silicon tetrafluoride and anhydrous hydrogen fluoride by using sodium fluorosilicate as raw material, which is characterized in that it comprises the following steps: 1) drying sodium fluorosilicate to remove water; Add sodium sulfate and sulfuric acid into the rotary kiln reactor at a molar ratio of 1:1, and react for 30-180 minutes at 160-220°C to generate sodium sulfate solid and mixed gas of silicon tetrafluoride and hydrogen fluoride; 3) Then dedust and pressurize Cool to -20~-30℃; 4) Send the pre-cooled mixed gas to the rectification tower for separation, control the pressure of the rectification tower to 0.6~0.75MPaG, the temperature of the condenser at the top of the tower is -70~-80℃, the bottom of the tower Extract anhydrous hydrogen fluoride; 5) Silicon tetrafluoride is extracted from the top of the tower in the form of liquid phase, and then sent to the silicon tetrafluoride washing tower to obtain silicon tetrafluoride gas after decompression gasification and dust removal. Corrosion of equipment, the obtained silicon tetrafluoride and hydrogen fluoride products have high purity and the production process is energy-saving and environmentally friendly.
Owner:SEDIN NINGBO ENG

Confusion communication method based on protocol, client terminal, server and storage medium

ActiveCN112565217ANormal responseOvercome the shortcomings of low flexibility and applicabilityData switching networksOn-ProtocolEngineering
The invention provides a confusion communication method based on a protocol, a client terminal, a server and a storage medium, and the method comprises the steps: transmitting a detection message to the server based on an alternative transmission layer protocol, so that the server builds the communication connection with the server based on the alternative transmission layer protocol; sending a data communication negotiation request to a server, wherein the data communication negotiation request is used for determining a data encryption and decryption strategy, a data compression strategy andan confusion strategy required by communication connection with the server; performing data processing on the target application traffic according to the data encryption and decryption strategy, the data compression strategy and the confusion strategy; and sending the target application traffic subjected to the data processing to the server, so that the server returns response data. According to the method and the device, the problem that the DPI system mistakenly intercepts the application or the service can be solved, and meanwhile, the defect of low flexible applicability caused by agency and confusion only for one protocol in an existing mistaken interception solution is overcome.
Owner:BEIJING TOPSEC NETWORK SECURITY TECH +2

Control method and control system of anti-dazzling rearview mirror

The invention provides a control method and a control system of an anti-dazzling rearview mirror. The method comprises the steps: acquiring a light intensity signal in front of a vehicle and a light intensity signal behind the vehicle; calibrating the light intensity signal in front of the vehicle to obtain an actual light intensity signal in front of the vehicle; determining the current state of the anti-dazzling rearview mirror; calibrating the light intensity signal behind the automobile according to the current state of the anti-dazzling rearview mirror, and acquiring an actual light intensity signal behind the automobile; and determining a voltage output control strategy for the anti-dazzling rearview mirror according to the actual light intensity signal in front of the vehicle, the actual light intensity signal behind the vehicle and the current state of the anti-dazzling rearview mirror. Based on the technical scheme provided by the invention, the light intensity signal in front of the vehicle and the light intensity signal behind the vehicle are respectively calibrated to obtain an actual light intensity signal in front of the vehicle and an actual light intensity signal behind the vehicle, so that the detection error of the photosensitive sensor can be reduced as much as possible, the reliability of an anti-dazzling algorithm is ensured, and the anti-dazzling rearview mirror can respond normally; and therefore, user experience is improved.
Owner:ECARX (HUBEI) TECHCO LTD

Process for removing carbon dioxide in combined alkali preparation method

The invention especially relates to a process for removing carbon dioxide produced in a combined alkali preparation method, which belongs to the technical field of combined alkali preparation methods. The process is as follows: mother liquor obtained after separation of solid sodium bicarbonate from liquid coming out from a decarburization tower is divided into two parts, i.e., A1 and A2, and A1 enters into a mixer after absorbing ammonia; after ammonium chloride is separated from mother liquor used in a procedure for producing ammonium chloride, the mother liquor adsorbs heat and ammonia, impurities of calcium-magnesium ions in the mother liquor are removed, and then the mother liquor is mixed with A1; obtained mixed liquor enters into the decarburization tower after cooling so as to remove carbon dioxide. The process provided in the invention enables a reaction for removing carbon dioxide to be carried out normally under the condition that a built-in or external cooler is not provided, i.e., that no cooling means is needed for heat exchange of decarburization liquid in the decarburization tower from the moment the decarburization liquid enters into the decarburization tower to the moment the decarburization liquid goes out from the decarburization tower; the decarburization tower can stably operate for a long period, with an operational period being more than 60 days; a goodabsorption effect of carbon dioxide is achieved, and a utilization rate reaches more than 99.6%.
Owner:张志广 +1

Sulfamic acid production device

A sulfamic acid production device comprises: a sulfuric acid storage tank, wherein a reaction kettle is arranged below the sulfuric acid storage tank, the sulfuric acid storage tank is connected withthe reaction kettle through a pipeline, and a volumetric flowmeter and a first electromagnetic valve are arranged on the pipeline between the sulfuric acid storage tank and the reaction kettle; the top of the sulfuric acid storage tank is communicated with a sulfuric acid liquid inlet pipe, the top of the reaction kettle is connected with the bottom of the urea feeding device through a pipeline, the top of the urea feeding device and the top of the urea feeding device are arranged in an opening mode, and a urea pool is arranged below the urea feeding device;the urea in urea pool is fed into urea feeding device through spiral feeder, and a urea quantitative feeding device is arranged in urea feeding device. According to the invention, urea can be continuously and automatically added, it isguaranteed that the reaction is normally conducted, meanwhile, sulfur trioxide can be prevented from leaking into air to pollute the environment, so taht the healthy production environment is guaranteed, and the reaction can be carried out successfully.
Owner:SHANDONG XINGDA CHEM

Chemical looping combustion device and method for staged oxidation of solid fuel

The invention discloses a chemical looping combustion device for solid fuel grading oxidation and a method thereof. The device is a circulating loop formed by an air reactor, an air cyclone separator, a fuel reactor, a fuel cyclone separator, a return feeder, a gasification reactor and an isolator. The method includes the steps that solid fuel is subjected to gasification reaction in the gasification reactor, generated gas fuel and oxygen carrier at a poor oxidation state are subjected to oxidation reaction, generated weak reduction gas enters the fuel reactor, and the generated weak reduction gas and oxygen carrier at an oxidation state are subjected to deep oxidation reaction, are converted into carbon dioxide and steam and are discharged; oxygen carrier at a reduction state in the air reactor and air are subjected to oxidation reaction to generate oxygen carrier particles at an oxidation state, and after being separated by the air cyclone separator, the oxygen carrier particles at an oxidation state enter the fuel reactor and are reduced to oxygen carrier at a poor oxidation state through weak reduction gas; after being separated by the fuel cyclone separator, the oxygen carrier at the poor oxidation state enters the gasification reactor through the return feeder and is reduced to the oxygen carrier at a reduction state through the solid fuel gasification products, and finally the oxygen carrier particles at a reduction state are returned to the air reactor through the isolator and are regenerated to form the oxygen carrier at the oxidation state.
Owner:SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products