30results about How to "Reduce runaway" patented technology

The invention relates to a fluidized bed reactor and a method for methanation of gas mixture containing H2 and CO. The fluidized bed reactor of the invention comprises a material gas inlet 1, a catalyst outlet 2, a gas-solid separator 5, a product gas outlet 6, a catalyst inlet 7 and a material gas lateral line inlet, wherein one or more gas distribution plate 3 is arranged in the fluidized bed reactor in order to divide the reactor into several fluidized bed layers to form several catalyst dense-phase zones; a cooling water spraying device 4 is arranged above each layer of the catalyst dense-phase zone in order to control temperature of the reactor. Because the circulating cooling water directly contacts high-temperature product gas, the reactor of the invention strengthens heat transfer, is easy to control reaction temperature, reduces heat loss during the heat transfer and improves heat utilization rate during the reaction. The reactor has the advantages of large production flux, big operation elasticity, high CO conversion rate, high selectivity of produced methane, less catalyst dosage, high utilization rate of heat quantity and so on, so that the reactor has good industrial application prospect.

The invention discloses a lateral suction range hood. The lateral suction range hood comprises a hood (1) and a movable smoke guide plate (2); the hood (1) is provided with a smoke inlet (10); the movable smoke guide plate (2) is switched between opening and closing states, and comprises multiple plates bodies (20, 21, 22); when the movable smoke guide plate (2) is located in the closing state, all the plate bodies (20, 21, 22) are arranged in a first direction (X) in sequence, and two adjacent plate bodies (20, 21, 22) in the first direction (X) are rotationally connected; and a rotating center line (O) of each plate body (20, 21, 22) is parallel to a second direction (Y). When the movable smoke guide plate (2) is located in the opening state, the movable smoke guide plate (2) is folded with the rotating center line of at least one plate body as a folding line, so that the extension length of the movable smoke guide plate is reduced.

The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.

The invention provides a compound cellulose indepth water shutoff modifying and flooding agent for oil production and a preparation method of the compound cellulose indepth water shutoff modifying and flooding agent. The preparation method is characterized in that compound cellulose serves as the raw material for preparing a compound gel type indepth water shutoff profile control agent; the field application result shows that a product synthesized by the agent has the characteristics of causing little damage, being temperature resistant and delaying crosslinking time; the product can be automatically repaired after being broken during percolation, so that injected water can be greatly prevented from flowing all around between pre-crosslinked particles, and as a result, the temperature resisting and salt resisting effects are realized; compound cellulose indepth water shutoff modifying and flooding agent for oil production is prepared from the components of cellulose, 1-butyl-3-methylimidazolium, a phenolic aldehyde crosslinking agent, additives and a surface active agent.

A four-wheel-drive high-speed all-weather driverless patrol car system comprises a patrol car body and a control system. The patrol car body comprises two pairs of front and rear driving wheels, and each pair of driving wheels is driven by four direct-current motors in connection with planetary reducers. First front and rear environment detection and protection systems in a control system mainly comprise single-line laser radars and CCD cameras; each of second front and rear environment detection and protection systems mainly comprises two microwave radars; each of front and rear blind area detection and obstacle avoiding systems comprises three ultrasonic sensors; the single-line laser radars, the microwave radars, the CCD cameras and a first auxiliary controller are all connected with amaster controller; ultrasonic sensors and motor drivers are connected with the first auxiliary controller, and each motor driver is connected with four direct-current motors. The system is high in stability, reliability, cost performance, operation processing speed and flexibility and effective in resistance to severe weather.

An urban road sweeper for dust suction and haze removal is characterized in that a sweeping device, a dust-settling device, a sprinkling device and a haze removal device are arranged in the compartment, dust suction devices are disposed on two sides of the compartment, the sweeping device comprises a sweeping roller and a dust collection box, the sweeping roller is aligned with an opening of the dust collection box, a guide plate is arranged above the sweeping roller, a filter mesh is arranged at the top of the dust collection box, the dust-settling device comprises a water tank, a water pump and a spraying pipe connected in sequence through a pipeline, the spraying pipe is evenly provided with a plurality of spray nozzles that open to the inside of the compartment, the bottom of the compartment is provided with a water gathering box used for gathering water sprayed by the spray nozzles, the water gathering box is communicated with the bottom of the water tank, the bottom of the water gathering box is provided with a sprinkling port, the haze removal device comprises a centrifugal fan, an inlet of the centrifugal fan faces the compartment, an outlet of the centrifugal fan is communicated with the inlet of a haze removal electrode box, and the dust suction devices comprise windows arranged in the sidewalls of the compartment, and axial-flow fans for drawing air out of the compartment into the compartment are rotatably arranged at the windows.

The invention provides a method and device for controlling the carbon content of high-nickel alloy cast iron. The method comprises the steps that the smelting temperature and heat preservation power of the high-nickel alloy cast iron are determined; the decarbonization curve of the corresponding carbon content of the high-nickel alloy cast iron is determined according to the smelting temperature and the heat preservation power; the initial carbon content value of the high-nickel alloy cast iron at a full-furnace state is determined through detection; the corresponding relation table of a corresponding carbon content supplementing value and time is determined according to a preset target carbon content value, the initial carbon content value and the decarbonization curve; and in the smelting heat preservation process of the high-nickel alloy cast iron, a carburant is added to a smelting furnace according to the corresponding relation table of the carbon content supplementing value and the time. According to the technical scheme, the continuous stability of the carbon content in the smelting heat preservation process of the high-nickel alloy cast iron is effectively guaranteed, the phenomenon that the carbon content of the high-nickel alloy cast iron is out of control is effectively reduced, and the product quality is guaranteed.

The invention discloses a four-wheel-driven all-weather driverless patrol car system. The patrol car system comprises a patrol car body and a control system; the patrol car body is provided with a front pair of driving wheels and a rear pair of driving wheels, wherein the four driving wheels are driven by four direct-current motors respectively; each direct-current motor is connected with a planetary reducer; each of a first front environment detection and protection system and a first rear environment detection and protection system in the control system is mainly composed of a first single-laser radar, a second single-laser radar and a CCD camera; each of a second front environment detection and protection system and a second rear environment detection and protection system is mainly composed of two microwave radars; each of a front blind area detection and obstacle avoidance system and a rear blind area detection and obstacle avoidance system is composed of three ultrasonic sensors;the single-laser radars, the microwave radars, the CCD cameras, a wireless communication module and an auxiliary controller are all connected with a main controller; and the ultrasonic sensors and amotor driver are all connected with the auxiliary controller, and the motor driver is connected with the four direct-current motors respectively. The system is high in stability, reliability and costperformance, high in arithmetic processing speed, high in flexibility and capable of effectively coping with severe weather.

The invention relates to an unmanned aerial vehicle near-ground flight control method and device, a medium, equipment and an unmanned aerial vehicle. The method comprises the following steps: obtaining the current height to the ground of the unmanned aerial vehicle; judging whether the current ground height of the unmanned aerial vehicle is smaller than a preset height; and under the condition that the current height to the ground of the unmanned aerial vehicle is smaller than the preset height, performing near-ground flight control on the unmanned aerial vehicle according to the flight control parameter with the upper limit value. Thus, under the condition that the current height to the ground of the unmanned aerial vehicle is smaller than the preset height, that is, under the condition that the unmanned aerial vehicle approaches the ground, near-ground flight control is performed on the unmanned aerial vehicle according to the flight control parameter with the upper limit value, so that the flight state of the unmanned aerial vehicle in the near-ground flight process is limited, the unmanned aerial vehicle is kept stable, the situation that the unmanned aerial vehicle collides with the ground in the flying process or is out of control when touching the ground is reduced, and the safety of the unmanned aerial vehicle in the near-ground flying process is improved.

The invention discloses a dangerous goods transport vehicle carriage with high safety performance, which comprises a transport vehicle body, a carriage body, a connecting block, a protective layer androllers, and is characterized in that the carriage body is fixed on the upper surface of the transport vehicle body, a third spring is fixed on the rear side of the connecting block, a rotating shaftis arranged on the front surface of the connecting block, a connecting rod is installed on the surface of the rotating shaft, a fixing block is arranged on the surface of the rotating shaft, a secondspring is fixed to the lower surface of the fixing block, a bearing plate is fixed to the upper end of the fixing block, and a sliding frame is fixed to the surface of the right side in the carriagebody. According to the dangerous goods transport vehicle carriage with the high safety performance, the protective layer is arranged, the rising speed of the temperature in the carriage body due to the fact that the sun irradiates the carriage body can be decreased, meanwhile, by increasing the flow speed of air, heat in the carriage can be rapidly transferred out through the outer wall of the carriage body, and the safety of dangerous goods is further protected.

The invention discloses a device for preparing methanol into propylene. The device comprises a first reactor, a first material conveying pipe, a second material conveying pipe, a third material conveying pipe, a cooling unit, a dimethyl ether separation tower, a heating furnace, a second reactor, a separation unit, a C4 rectifying tower, a circulating hydrocarbon pipeline and a steam pipeline. Theinvention further discloses a corresponding method for preparing methanol into propylene. Isobutane is separated from circulating hydrocarbons, and a first product stream obtained by carrying out thereaction for preparing methanol into dimethyl ether in the first reactor is divided into three streams, so that the temperature flying phenomenon of the reactor can be reduced through dispersed feeding matched with different temperatures, and meanwhile, the high-efficiency temperature control of the reactor can be facilitated by adjusting the gas-liquid ratio fed from a side line.

The present invention relates to a pressurized gas sealing device for an atmosphere furnace, which belongs to the mechanical category and mainly includes a gas sealing device and a furnace body connected to the gas sealing device, and a channel is provided in the gas sealing device, and there are multiple The blocking part is formed with a storage chamber by blocking, and the storage chamber is used to pressurize the gas in the storage chamber through a gas pressurizing device, and each of the blocking parts is provided with a delivery port, so that when the furnace body When the gas flows in the direction of the gas sealing device, the gas pressurization device is used to fill the accommodating chamber with gas and pressurize, so that the air pressure in the accommodating chamber is slightly lower than the air pressure in the furnace body and suppressed, so that the gas in the furnace body can be reduced. Flow from the direction of the air seal device to achieve the effect of air seal.

The invention discloses an anti-collision limiting device. The device comprises a contact switch and a buffer, wherein the contact switch is installed on a bottom plate, and the contact switch is provided with a swing part used for triggering the contact switch and enabling the contact switch to generate a contact signal; and the buffer comprises a contact rod, the contact rod is installed on the bottom plate in a sliding mode, the contact rod is connected with an elastic piece used for buffering impact force borne by the contact rod, the contact rod is further connected with a driving piece, the driving piece is provided with a driving face parallel to the sliding direction of the contact rod, one end, close to the swing part, of the driving face is provided with an inverted inclined face smoothly connected with the driving face, after the contact rod is impacted by a moving machine, the contact rod drives the driving part to move synchronously, the driving part extrudes the swing part sequentially through the inverted inclined face and the driving face, and the contact switch generates the contact signal for braking the machine. According to the device, a protection mode of combining the mechanical contact switch and a bumper is adopted, so that the use cost is low, and safety and reliability are realized.

The invention relates to a closed fixed type annular turbojet steam wheel which comprises a shell, a main shaft, a sealed jet cavity, a sealing ring piece and a jet ring, the main shaft is rotationally installed in the shell in the axial direction of the shell, the sealed jet cavity in linkage with the shell is installed on the main shaft in the shell, the jet ring is installed in the sealed jet cavity in a wrapped mode, the sealing ring piece rotating relative to the sealed jet cavity is installed on the outer side of the sealed jet cavity, a recoverer and a flow divider are arranged at the upper end and the lower end of the sealed jet cavity in the shell respectively, an air inlet pipe extending out of the shell is arranged on the flow divider, the flow divider is communicated with the interior of the jet ring through an air inlet branch pipe, the jet ring is communicated with the recoverer through an exhaust branch pipe, and an air outlet pipe extending out of the shell is arranged on the recoverer. According to the closed fixed type annular turbojet steam wheel, steam loss in the jet process is effectively reduced, and the efficiency of steam acting is improved; and meanwhile, corrosion of steam to parts is avoided, and the service life of the steam wheel is prolonged.

The invention discloses a sterile quick unfreezing mechanism for a food processing workshop, relates to the technical field of food processing, and solves the problems that the edge of standing food is not uniformly thawed, and later food processing is not facilitated. The invention discloses the sterile quick unfreezing mechanism for a food processing workshop. The sterile quick unfreezing mechanism comprises a main frame, the main frame comprises a waved plate, and the waved plate is fixedly arranged in the main frame; a supporting chain is rotationally connected to the interior of the main frame; the supporting chain comprises supporting gears, a connecting block and a storage basket, and the supporting chain is connected with one supporting gear in a tight supporting and meshing mode; the supporting gear is rotationally connected with a main frame rotating shaft in a penetrating mode, and a supporting gear rotating shaft is connected with a motor in a nested mode, and the motor is fixedly connected with the main frame. The unfrozen food in a storage basket is driven by the supporting chain to move circularly, so that all parts of the unfrozen food can be unfrozen uniformly, and later food processing is facilitated.

The invention provides a control method for optimizing a reaction of mercury-free catalytic synthesis of vinyl chloride by using a gas-permeable member. According to the method, a long rod-shaped gas-permeable member is arranged at the center of a converter row tube, a raw material gas enters a tubular converter from the upper portion, then according to a certain proportion, partially enters an annular gap catalyst bed layer, and partially enters the gas-permeable member, and the raw material gas entering the gas-permeable member flows from top to bottom along the axial direction of the gas-permeable member, and simultaneously diffuses outward by penetrating through gas-permeable pores of the gas-permeable member in the radial direction to enter the annular gap catalyst bed layer, so thata contact path between the raw material gas and a catalyst is improved, a reaction of the catalyst bed layer is uniform, and temperature distribution of the converter from top to bottom and the radialdirection from inside to outside of the catalyst bed layer in the row tube is improved; and an effective utilization area of a heat exchanger tube of the converter is increased, the temperature-runaway phenomenon is reduced, the service life of the catalyst is prolonged, the resistance of a converter bed layer is reduced, and the production efficiency of the catalyst and the apparatus is improved.

The invention discloses an engine pressure balance system, which relates to the field of direct injection engines in gasoline cylinders. It includes air filter, air pump, air storage tank, solenoid valve, engine and sealed control cylinder, the air filter, air pump and air storage tank are connected in sequence; the air storage tank is connected with the third port of the solenoid valve; the solenoid valve The first port and the second port are respectively connected with the crankcase cavity and the intake pipe; the control cylinder is equipped with a control piston and a piston rod connected to it; the control piston seals the cylinder cavity on both sides; the left cavity of the control cylinder passes through The first conduit communicates with the inner cavity of the crankcase; the right cavity of the control cylinder communicates with the inner cavity of the cylinder on the upper side of the piston through the second conduit and the air passage; the two side walls of the control piston are elastically connected with the respective adjacent end cylinder walls through springs; the piston The distance between the left end of the rod and the two elastic contacts is 1mm. The invention can reduce the pressure difference between the upper side and the lower side of the piston in the cylinder, thereby reducing the phenomenon of gasoline running down and improving the lubricating stability of the engine oil.

The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.

The invention discloses a steering-by-wire control method of a joystick, comprising the following steps: collecting the joystick rotation angle δ d , and by the corner factor f δ and speed factor f u Correction, calculate the ideal steady-state front wheel angle Calculate the reference yaw rate ω according to the linear two-degree-of-freedom reference model r and the reference center of mass slip angle β r ; Detect whether the deviation between the actual yaw rate and the side slip angle of the center of mass and the reference value reaches the stability threshold; And calculate the braking torque of each wheel; the steering executive motor and the braking system perform actions according to the instructions. The invention can simplify the steering operation, improve the steering stability, save the space in the car, reduce the collision damage and easily realize the switching between the automatic driving mode and the manual driving mode.

The invention relates to a micro-channel reaction system and a method for preparing an epoxy compound. The micro-channel reaction system comprises a mixer and a micro-channel reactor; materials are fed according to the molecular design molar ratio of a target product and mixed into a mixture through the mixer; the micro-channel reactor comprises a micro-channel preheating section and a micro-channel reaction section, and the mixture is preheated through the micro-channel preheating section and then introduced into the micro-channel reaction section for reaction. According to the method, the raw materials are directly mixed and preheated, all the raw materials are fully mixed and react according to molecular design simulation positions, meanwhile, the reaction is controlled by adjusting the feeding speed of the mixture, and the temperature rise and the pressure rise caused by reaction heat release are both lower than design temperature and design pressure, and the design temperature and the design pressure are both lower than the highest bearing temperature and the highest bearing pressure of the equipment, so that safe reaction can be ensured under the condition that the reaction is out of control. Therefore, the reaction for preparing the epoxy compound is intrinsically safe and is more environment-friendly, and a product with higher purity is obtained.

The invention provides a control method for optimizing the reaction of mercury-free catalyzed synthesis of vinyl chloride by using a ventilating member. By setting a long rod-shaped ventilating member at the center of the converter tube, the raw material gas enters the tube-and-tube converter from the upper part, According to a certain ratio, part of it enters the annular catalyst bed, and part of it enters the ventilation component. The raw material gas entering the ventilation component flows from top to bottom along the axial direction of the ventilation component, and at the same time diffuses outward through the ventilation pores of the ventilation component in the radial direction. , into the annulus catalyst bed, thereby improving the contact path between the raw material gas and the catalyst, making the catalyst bed react evenly, and improving the temperature distribution of the converter from top to bottom and the catalyst bed in the tube from the inside to the radial direction; It can help to improve the effective utilization area of ​​the heat exchange tube of the converter, reduce the phenomenon of runaway temperature, prolong the service life of the catalyst, reduce the resistance of the bed layer of the converter, and improve the production efficiency of the catalyst and the device.

The invention relates to a fluidized bed reactor and a method for methanation of gas mixture containing H2 and CO. The fluidized bed reactor of the invention comprises a material gas inlet 1, a catalyst outlet 2, a gas-solid separator 5, a product gas outlet 6, a catalyst inlet 7 and a material gas lateral line inlet, wherein one or more gas distribution plate 3 is arranged in the fluidized bed reactor in order to divide the reactor into several fluidized bed layers to form several catalyst dense-phase zones; a cooling water spraying device 4 is arranged above each layer of the catalyst dense-phase zone in order to control temperature of the reactor. Because the circulating cooling water directly contacts high-temperature product gas, the reactor of the invention strengthens heat transfer, is easy to control reaction temperature, reduces heat loss during the heat transfer and improves heat utilization rate during the reaction. The reactor has the advantages of large production flux, big operation elasticity, high CO conversion rate, high selectivity of produced methane, less catalyst dosage, high utilization rate of heat quantity and so on, so that the reactor has good industrial application prospect.

The invention relates to the technical field of waste gas treatment equipment, in particular to a chemical waste gas recovery device for beneficiation agents; it can accurately and thoroughly recover the volatile waste gas at the ton barrel and reduce the escape of waste gas; it includes a gas collecting hood, a suction fan and a position Adjustment mechanism, the output end of the air collecting hood is communicated with the input end of the suction fan, and the position adjustment mechanism includes a mounting plate, a first driving cylinder, a lifting seat, a first half-circle tooth plate, a second half-circle tooth plate, a connecting support, a mounting seat and For the slider, the first driving cylinder is fixedly installed on the mounting plate, the lifting seat can be slid up and down and installed on the mounting plate, the output end of the first driving cylinder is fixedly connected with the lifting seat, and the first rotating shaft is rotatably installed on the lifting seat. The first semi-circular toothed plate is fixedly installed on the end of the second rotating shaft, the upper part of the connecting support is fixedly connected with the lifting seat, the mounting seat can be rotatably installed on the connecting support, the second semi-circular toothed plate is fixedly installed on the mounting seat, on the lifting seat A braking and driving mechanism for providing power for the rotation of the first rotating shaft is provided.

The invention provides a method and device for controlling the carbon content of high-nickel alloy cast iron. The method comprises the steps that the smelting temperature and heat preservation power of the high-nickel alloy cast iron are determined; the decarbonization curve of the corresponding carbon content of the high-nickel alloy cast iron is determined according to the smelting temperature and the heat preservation power; the initial carbon content value of the high-nickel alloy cast iron at a full-furnace state is determined through detection; the corresponding relation table of a corresponding carbon content supplementing value and time is determined according to a preset target carbon content value, the initial carbon content value and the decarbonization curve; and in the smelting heat preservation process of the high-nickel alloy cast iron, a carburant is added to a smelting furnace according to the corresponding relation table of the carbon content supplementing value and the time. According to the technical scheme, the continuous stability of the carbon content in the smelting heat preservation process of the high-nickel alloy cast iron is effectively guaranteed, the phenomenon that the carbon content of the high-nickel alloy cast iron is out of control is effectively reduced, and the product quality is guaranteed.

The invention relates to a closed rotary type annular turbojet steam wheel. The annular turbojet steam wheel comprises a shell, a middle shaft, a sealed jet cavity, a jet ring, a sealing ring piece, an exhaust collector and an air inlet collector; the sealed jet cavity is fixedly mounted on the inner wall of the shell, the jet ring is arranged in the sealed jet cavity, and the sealing ring piece is rotationally mounted on the inner ring sealing jet cavity of the jet ring; the middle shaft is coaxially mounted in the middle of the shell, the exhaust collector and the air inlet collector sequentially and coaxially penetrate through the middle shaft in the shell from bottom to top, air inlet branch pipes are evenly distributed on the outer wall of the exhaust collector at intervals, exhaust branch pipes penetrate through the sealing ring piece to be connected with the jet ring, and the exhaust branch pipes evenly distributed at intervals penetrate through the sealing ring piece to connect the jet ring with the air inlet collector. According to the closed rotary type annular turbojet steam wheel, the steam loss in the jet process is effectively reduced, and the efficiency of steam acting is improved; meanwhile, corrosion of steam to parts is avoided, and the service life of the steam wheel is prolonged.

The invention discloses a methanol-to-propylene device, which comprises a first reactor, a first feed pipe, a second feed pipe, a third feed pipe, a cooling unit, a dimethyl ether separation tower, a heating furnace, The second reactor, separation unit, C4 rectifying tower, circulating hydrocarbon pipeline and steam pipeline; the present invention also discloses the corresponding methanol-to-propylene method; the present invention separates isobutane from circulating hydrocarbon and carries out the first reactor The first product stream obtained from the reaction of methanol to dimethyl ether is divided into three streams. The dispersed feed with different temperatures helps to reduce the phenomenon of reactor overheating. At the same time, by adjusting the gas-liquid ratio of the feed from the side line, it helps Efficient temperature control of the reactor.

The invention relates to the field of catalysis, and discloses a reactor provided with a spiral pipe and application thereof. The reactor internally comprises a reaction cavity, a catalyst section filling the reaction cavity and a spiral pipe arranged around the outer wall of the reaction cavity. An air outlet of the spiral pipe is located below the catalyst section, and the distance between the air outlet of the spiral pipe and the cross section of the downstream end of the catalyst section is 0.5-0.8 times of the length of the catalyst section. A catalyst in the catalyst section comprises a carrier and an active component loaded on the carrier, wherein the carrier is at least one of CaO, MgO and BaO, and the active component is an oxide of alkali metal. Purging gas is used as a heat carrier to remove reaction heat, so that the hot-spot temperature of a catalyst bed layer is effectively controlled, and the temperature runaway phenomenon is reduced. Therefore, deep oxidation of methane is inhibited to a certain extent, and the methane conversion rate and the selectivity and yield of C2 hydrocarbon are improved. The reactor has a very good industrial application prospect.

The invention relates to a small and medium-sized automobile tire burst emergency device that is an inner tire which is arranged in a small and medium-sized automobile tire and is made of a material with light weight, high strength and certain buffering capacity, can be a tire with a honeycomb-shaped, honeycomb-shaped, multi-dimensional and other hollow structures, is tightly combined with a rim by virtue of the elasticity of the tire, and keeps a certain distance with the small and medium-sized automobile tire. According to the tire burst emergency device, harm caused by tire burst of the automobile tire is reduced in a simple and reliable mode, the safety guarantee level of drivers and passengers is improved, and impact on automobile structures and parts is reduced.