43 results about "Propane gas" patented technology

The invention provides composite spinning equipment for forming rocket pipe type structural parts. The composite spinning equipment comprises a structural system, an operation table, an oil cooler, an oil tank, a control cabinet, a water cooler, a heating system, a gas distribution cabinet, a hydraulic station, an oxygen bottle, a circulating filtering device and a propane gas bottle. The structural system comprises a main spindle box, the main spindle box has active power and can achieve controllable rotation, a closing-in spindle box does not have active power, and when closing-in spinning needs to be conducted, the main spindle box and the closing-in spindle box are connected through a coupler, and controllable rotation of the closing-in spindle box is achieved; the water cooling machine is used for cooling the spinning roller in the spinning process; the heating system can heat the workpiece to realize hot spinning; the circulating filtering device sprays cutting fluid to the workpiece, circulating filtering use of the cutting fluid is achieved, and wet-type forced rotation is achieved. The hot spinning and wet spinning device has the integrated hot spinning and wet spinning effects of strong spinning, close-up common spinning and the like.

The invention discloses a mixed gas flow online calibration device and method for a cable combustion test device, and belongs to the technical field of cable and optical cable combustion performance detection. The device comprises a propane gas source, an air source, a pressure reducing valve group, a mass flow controller, a mixed gas online calibration module group, a Venturi mixer and a blowtorch, a mixed gas online calibration module is arranged on the downstream of a mass flow controller, and a temperature and pressure sensor, a differential pressure mass flow meter and an embedded processor are combined, so that real-time monitoring and online calibration of mixed gas flow are achieved; according to the method, a flow drift curve can be fitted, the output error of the controller is corrected, and the influence of dismounting calibration and pipeline leakage is avoided; compared with the prior art, the device has the advantages of being high in precision, simple in structure, capable of self-checking, high in stability and the like, the consistency of the blast burner fire source power and the flame shape in a GB / T 31248 test is effectively improved, and the accuracy and repeatability of a cable combustion performance test are guaranteed.

The utility model provides a refrigerant preparation rack, which relates to the technical field of transmission electron microscopes and comprises a functional box and a control box arranged on the lower side of the functional box, and a partition plate in the middle of the functional box divides the functional box into a mixing area and a freezing area; the mixing area is provided with an observation window, and a first inlet pipe, a second inlet pipe and a mixing cavity are arranged in the mixing area; a liquefying cavity is formed in the freezing area; a display screen is arranged on the side face of the control box, a high-voltage area is arranged on one side of the display screen and provided with indicator lamps, and a low-voltage area is arranged on the side, away from the high-voltage area, of the display screen and provided with control buttons. The device is simple in structure, ethane and propane gas are mixed in the mixing area on the front side of the function box to obtain ethane-propane mixed gas, the ethane-propane mixed gas is liquefied in the freezing area on the rear side of the function box, the control box below the function box can monitor and control mixing and liquefying operation, the control box is divided into high pressure and low pressure, and the control box is convenient to use. The safety is high, and the refrigerant is efficiently and stably prepared.

A haz gas detection system includes a haz gas sensor and a controller. The haz gas sensor generates an output indicative of a measured concentration of a gas fuel in an airflow vented from a gas turbine enclosure. The controller is communicatively coupled to the haz gas sensor and receives the output from the haz gas sensor; compares the output of the haz gas sensor to a first threshold, wherein the first threshold is determined for operation of the haz gas sensor with methane gas; receives a valve control signal indicative of a propane valve being open; compares the output of the haz gas sensor to a second threshold, wherein the second threshold is determined for operation of the haz gas sensor with propane gas; and in response the determining that the output of the haz gas sensor exceeds the second threshold, generates an alarm, generates instructions to shut down the gas turbine system, or both.

The utility model provides a linkage control heptafluoropropane gas fire extinguishing device, and belongs to the technical field of fire extinguishing. Comprising a storage tank, and a lifting assembly and a rotary spraying assembly are arranged on the outer wall of the storage tank; the lifting assembly comprises a top plate installed at the top of the storage tank, a first motor is fixedly assembled at the bottom of the top plate, and a first driving wheel is fixedly assembled at the top end of an output shaft of the first motor. The first motor drives the first driving wheel to rotate, the first driving wheel rotates to drive the first driven wheel to rotate, the first driven wheel rotates to drive the four sets of gears to rotate, the gears rotate on the outer wall of the screw to drive the screw to move longitudinally, and the screw moves longitudinally to drive the bottom plate to move longitudinally. And finally, the storage tank and the rotary spraying assembly are driven to change the height, so that the height of the device can be adjusted according to different building inner floor heights, and the fire extinguishing effect of the fire extinguishing device is guaranteed.

The utility model provides a refrigerant R290 gas leakage detection alarm, and relates to the technical field of propane gas alarm. The top end surface of the fixed mounting plate is fixedly connected with an alarm main body; the upper part of the alarm main body is symmetrically and fixedly connected with two warning lamps; the center of the lower part of the alarm body is fixedly connected with a detection interface. Two auxiliary grooves are symmetrically formed in the outer part of the fixed mounting plate; the positions of the two auxiliary grooves are aligned; and two fixed plates are symmetrically and fixedly connected in the fixed mounting plate. When the alarm main body detects that refrigerant R290 gas leaks through the detection interface, an electrifying signal is sent to the electromagnet, and the transparent protection shell is driven to turn over through a series of transmission, so that the transparent protection shell protects the alarm main body, and the problem that the leakage of the refrigerant R290 gas is caused due to rapid movement and dense crowding of workers is solved. The problem that workers are prone to collide with alarms installed on the periphery, and once collision occurs, the alarms are extremely prone to being touched by mistake is solved.

The utility model discloses an on-line detection and calibration system for a gas inlet flow meter, which relates to the field of gas flow meter calibration and comprises a nozzle flow meter, a gas inlet flow meter and a gas analyzer which are sequentially connected in series and are communicated through a gas inlet pipeline. The nozzle flowmeter is connected with a standard gas source and is used for spraying gas in the standard gas source into the gas inlet pipeline and enabling the gas to sequentially flow through the gas inlet flowmeter and the gas analyzer; according to the mass M1 of the propane gas injected by the nozzle flowmeter and the propane gas M2, measured by the gas inlet flowmeter and the gas analyzer, at the tail end of the gas inlet flowmeter, whether the measured data of the gas inlet flowmeter are reliable or not is judged according to the numerical value obtained by comparing the difference value of the M1 and the M2 with the M2, online calibration is conducted on the gas inlet flowmeter, and the gas inlet flowmeter can be accurately measured. On the premise that the air inlet flow meter is not disassembled, online inspection and calibration of the high-horsepower engine air inlet flow meter are achieved.

The invention provides an automatic test system process for a turbojet engine pedestal, relates to the technical field of new energy engine testing, is suitable for testing power systems of motor vehicles such as electric vehicles carrying turbojet engines, and is also suitable for testing power systems of various unmanned aerial vehicles and patrol bullets. The problems of more manual operation, low efficiency, high energy consumption and insufficient safety of a traditional test are solved, system hardware is divided into an operation room, a rack test room and a gas cylinder storage room, a measurement and control system device serves as a core, and the whole process of safety protection, gas supply, ignition, starting and testing is integrated. The safety protection system realizes abnormal alarm through a propane gas concentration sensor and a pressure / temperature sensor; the gas supply system automatically controls gas on-off and state monitoring; the ignition system is combined with an exhaust temperature sensor to realize automatic reset of the probe; after starting, oil supply and gas cut-off are automatically switched according to a rotating speed threshold value; normally testing editable working conditions, automatically collecting parameters, and stably stopping after the parameters are collected.

This invention provides a power generation device based on the cold energy of a cryogenic propane tank, comprising a liquefied propane vaporizer, a propane heater, an intermediate medium vaporizer, a turbine generator set, and a dimethylamine circulating pump. The tube-side inlet of the liquefied propane vaporizer is connected to a cryogenic storage tank containing propane. The tube-side outlet of the liquefied propane vaporizer is connected to the tube-side inlet of the propane heater, and the tube-side outlet of the propane heater is connected to a propane pipeline network. Dimethylamine, after passing through the dimethylamine circulating pump, is connected to the tube-side inlet of the intermediate medium vaporizer. The tube-side outlet of the intermediate medium vaporizer is connected to the inlet of the turbine generator set, and the outlet of the turbine generator set is connected to the shell-side inlet of the liquefied propane vaporizer. The shell-side outlet of the liquefied propane vaporizer is connected to the inlet of the dimethylamine circulating pump. This invention achieves dual-sided cascaded energy recovery from cold to heat. Compared to traditional direct seawater heating schemes, the net power generation is increased.

The utility model relates to the technical field of reflux devices, and discloses a gas reflux device for propane filling, which comprises a propane steel cylinder, one side of the propane steel cylinder is fixedly communicated with a gas inlet pipe, and the front side of the propane steel cylinder is fixedly communicated with an exhaust pipe. An air pressure monitor for detecting the internal air pressure of the propane steel cylinder is mounted on the propane steel cylinder; the first return pipe is fixedly communicated with the other side of the propane steel cylinder; the filter box is fixedly installed on the outer side of the propane steel cylinder, the top of the filter box is fixedly communicated with one end of the first backflow pipe, and the filter box is designed to be of an open structure. According to the gas backflow device for propane filling, when propane gas passes through the filter box, a filter screen can filter the gas, impurities such as solid particles, oil stains and dust in the gas are effectively removed, and the gas backflow effect is improved; the filtering function ensures that the gas flowing back to the return tank is kept highly pure, so that the internal cleanness of the equipment is maintained, and abrasion and pollution caused by impurities are avoided.

The utility model discloses a propane gas vaporization stable output device which comprises a base, a propane gas cylinder is fixedly installed on the top of the base, a heating cover is fixedly installed on the outer side of the propane gas cylinder, a heat preservation cover is arranged on the outer side of the heating cover, and a protective cover shell is arranged on the outer side of the heat preservation cover. Three damping balls are fixedly connected to the position, close to one side, of the top between the heat preservation cover and the protective cover shell, and two damping plates are fixedly connected to the position, close to the other side, of the top between the heat preservation cover and the protective cover shell. According to the propane gas vaporization stable output device, the heating cover is fixedly installed on the outer side of the propane gas cylinder, the heat preservation cover is arranged on the outer side of the heating cover, a double-layer heat preservation structure is formed, heat loss is effectively reduced through the design, it is ensured that the propane gas can maintain a stable temperature environment in the vaporization process, and therefore the vaporization efficiency is remarkably improved; and the gas supply stability is ensured.

The application provides a metabolic chamber accuracy online verification method and system, comprising: propane gas is accurately controlled by a mass flow controller to set a flow rate into a burner placed in a metabolic chamber, and the propane gas is ignited to be completely combusted; according to a complete combustion stoichiometric ratio of the propane gas, a theoretical oxygen consumption and a theoretical carbon dioxide generation are calculated from the set flow rate; mixed gas discharged from the metabolic chamber is sampled, the sampled gas is dehumidified, a dew point temperature before dehumidification is measured, a volume of the sampled gas is corrected to a dry gas volume under a standard state based on the obtained dew point temperature, and then actual measured oxygen consumption and carbon dioxide generation of the metabolic chamber are obtained; oxygen consumption recovery and / or carbon dioxide recovery are calculated; and whether the recovery is within a preset qualified range is judged, and if yes, it is determined that the metabolic chamber accuracy verification is passed. End-to-end verification of the whole system of the metabolic chamber is realized.

A propane gas-utilizing system includes a housing having propane gas and a propane leakage prevention material having a catalyst, scavenger, and / or oxidizer of the propane gas arranged in the housing and including at least one of (a) an oxide material having at least one composition of formula (I): Ru1-xMxO2 (I), where 0<x≤0.1 and M is Ag, K, Pt, Rh, or Ir, or (b) an oxide material having at least one composition of formula (II): Co3-xMxO4 (II), where 0<x≤0.3, and M is Pd, Cu, or Sr, or (c) an oxide material having at least one composition of formula (III): MM′xOy (III), where x is a stoichiometric ratio of M′ to M, 0≤x≤1.5, y is a stoichiometric ratio of O to M, 1≤y≤3, M is an alkali metal, and M′ (if x>0) is Y, Ce, Nb, Ta, La, Nd, Mn, Ag, Au, or Cr.

The utility model relates to the technical field of propane gasification, in particular to a propane gasification system which comprises a shell-and-tube heat exchanger, and the shell-and-tube heat exchanger is connected with a tube pass fluid inlet tube, a tube pass fluid outlet tube, a shell pass fluid inlet tube and a shell pass fluid outlet tube. A coil pipe is wound outside the shell-and-tube heat exchanger, one end of the coil pipe is connected with a steam pipe, and the other end of the coil pipe is connected with a tube pass fluid inlet pipe. A coil pipe shut-off valve and a coil pipe adjusting valve are arranged on the coil pipe; by arranging the coil pipe, steam is introduced into the coil pipe, on the basis that circulating water in a tube pass heats liquid-state alanyl ammonia, the steam can be used for heating the liquid-state alanyl ammonia, the steam can be mixed with the circulating water after being condensed, and the temperature of the circulating water is increased after mixing; finally, the evaporation effect of the liquid propane is enhanced.

The invention belongs to the technical field of acrylic acid hydroxyl ester production, particularly relates to an acrylic acid hydroxyl ester production loop reaction device and method, and aims to solve the problems of low reaction speed, more generated side reactions, high material consumption, low production cost and the like caused by the fact that materials cannot be uniformly contacted with ethylene oxide / propylene oxide gas due to the fact that the spraying direction of a spraying mixer is fixed. In order to solve the problem of low product quality, the invention provides the following scheme: the device comprises a tool bottom plate, the upper side of the tool bottom plate is provided with a reactor body, one side of the reactor body is connected with a reactor cover plate through a bolt, the outer part of the reactor body is provided with a mixing module, and the mixing module comprises a driving motor; a mounting round opening is formed in one side of the reactor cover plate. The hydroxyl acrylate production loop reaction device and method disclosed by the invention have the effects that materials are fully mixed, the reaction speed is high, generated side reactions are low, the material consumption is reduced, and the product quality is high.

The utility model belongs to the technical field of valves, and provides a container valve for a heptafluoropropane gas fire extinguishing device, which comprises a valve body, a valve core, a valve core and a valve core, the valve element is provided with an opening position and a closing position; two ends of the first spring are respectively connected with the valve core and the valve body; the pressing cap is hollow, the two ends of the pressing cap are open, the pressing cap is arranged at one end of the valve element and fixedly connected with the valve body, an inflation cavity is defined by the pressing cap, the valve element and the valve body, and the side, facing the valve element, of the pressing cap tightly presses the sealing membrane; the mounting base is arranged on the side, away from the valve element, of the pressing cap; the puncture needle is arranged on the side, away from the valve element, of the sealing membrane; the first driving assembly is arranged on the mounting seat; and the emergency driving assembly is arranged on the mounting seat, and the emergency driving assembly is in transmission connection with the puncture needle. The container valve for the heptafluoropropane gas fire extinguishing device is simple in structure, and when the first driving assembly breaks down, the container valve can be opened through the emergency driving assembly.

The invention relates to a device and a method for detecting flame retardance of an optical cable. The device comprises a test main device, the test main device comprises a test cavity, the bottom of the test cavity is provided with an air inlet, a preset gap is reserved between the air inlet and the ground, and the top of the test cavity is provided with an exhaust port; the fire supply device comprises a fire supply blow lamp, a mixer connected with the fire supply blow lamp, a switch device connected with the mixer, a propane gas source and a compressed air source, and a regulating valve and a switch valve are arranged on a connecting pipeline between the propane gas source and the switch device and a connecting pipeline between the compressed air source and the switch device respectively. A plurality of fire spraying holes facing the interior of the test cavity are formed in the fire supply blast lamp; and the suspension lifting device is arranged at the top of the test cavity and is used for driving the test cable to maintain a vertical suspension state in the test cavity for lifting. The combustion environment of the optical cable in the base station application is truly represented, and the accuracy of the test result is remarkably improved.

The cabinet type heptafluoropropane gas fire extinguishing device comprises a cabinet body and a fire extinguisher, the fire extinguisher is installed in the cabinet body, and a heptafluoropropane gas fire extinguishing agent is contained in the fire extinguisher; the heptafluoropropane gas extinguishing agent is prepared from the following components in parts by weight: 75 to 85 parts of heptafluoropropane; 5 to 10 parts of perfluorohexanone; 0.5 to 1.5 parts of surface modified nano silicon dioxide; 2-4 parts of composite after-combustion inhibiting powder; and 0.5-2 parts of a stabilizer. The heptafluoropropane gas fire extinguishing agent in the fire extinguisher realizes quadruple synergistic effects of gas-phase fire extinguishing, chemical inhibition, physical coverage and cooling through delicate cooperation of all components, and is especially suitable for extinguishing deep fire disasters easy to reburn.

The invention relates to the technical field of data test processing, and discloses a fire characteristic parameter simulation test platform comprising a gas supply system used for providing stable propane gas supply; the burner system is used for completing automatic ignition and generation of a fire scene according to the control signal; the measuring system comprises various sensors including a thermocouple, a thermocouple tree, a heat flow meter, a camera and an anemometer; the data acquisition and processing system is used for processing the fire characteristic parameters in real time and constructing a database; the safety guarantee system monitors the concentration of combustible gas in the environment in real time, triggers an alarm signal when the concentration is abnormal and transmits the alarm signal to the combustion control system; and the combustion control system drives the combustor system to adjust the gas flow and the valve opening degree in real time. Fire scene simulation and data acquisition and analysis can be completed on the same platform at the same time, the flame scale, the combustion intensity and the duration time can be accurately adjusted under the control system, the experiment safety risk is greatly reduced, and the experiment is more environmentally friendly, safer and controllable.

The invention relates to a movable heptafluoropropane foam fire extinguishing device which comprises a cart, a foam storage tank, a foam mixer and a heptafluoropropane mixer are arranged in the cart, a water inlet, a foam inlet and a foam liquid outlet are formed in the foam mixer, the water inlet can be detachably connected with a fire hose, and the foam liquid outlet can be detachably connected with a water outlet. The foam inlet is connected with the foam storage tank, the heptafluoropropane mixer is provided with a heptafluoropropane inlet, a foam liquid inlet and a mixed liquid outlet, the foam liquid inlet is connected with the foam liquid outlet, a placement cabinet is embedded in the cart, a heptafluoropropane gas storage bottle is detachably arranged in the placement cabinet, and the heptafluoropropane gas storage bottle is connected with the heptafluoropropane gas storage tank. The heptafluoropropane inlet is connected with a heptafluoropropane gas storage bottle, and the placement cabinet can slide between a first position and a second position. The heptafluoropropane foam fire extinguishing system is carried on the cart and can move according to the diffusion condition of a fire disaster, fire fighting is convenient, the heptafluoropropane gas storage bottle can be replaced by pulling out the containing cabinet, and use is convenient.

The invention discloses an energy-gathered air cannon for eliminating the influence of freezing rain on power grid safety, and belongs to the technical field of power grid deicing equipment. The energy-gathered air cannon comprises a detonation chamber, a launch canister, a gas supply system, an electrical system and a chassis, wherein the detonation chamber is used for realizing gas detonation to generate shock waves; the launching cylinder adopts a horn mouth form, so that the airflow directionality is enhanced; the gas supply system is used for mixing air and propane gas in proportion through double-path gas supply and then conveying the mixture to the detonation chamber; and an electrical system adopts alternating current 380V power supply, supports wireless remote control, and can monitor the state of equipment in real time. Deicing is realized based on shock wave mechanics and a vibration effect, and the device has the advantages of lossless cleaning, high efficiency, rapidness, safety, reliability, environmental protection, energy conservation and high adaptability, can customize launch canisters for different key equipment of a power grid, is stable in operation and flexible in control, effectively solves the problem of icing of the power grid in freezing rain weather, is suitable for various power grid scenes, and has a wide application prospect.

The invention relates to the technical field of fluid fuel, and discloses a combustion energy-saving method for utilizing crude propane gas, which comprises the following steps: filtering fuel, filtering sulfur impurities, nitrate impurities and particle impurities in dye by using a filtering device, optimizing a combustor, adjusting the internal structure of a combustion chamber of the combustor, and simulating the environment. The method comprises the steps of environment simulation model establishment, combustion simulation, combustion simulation model establishment, air mixing ratio adjustment, combustion process monitoring, waste heat recovery and combined heat and power generation. During use, the real combustion process can be simulated through combustion simulation and environment simulation, so that people can verify the optimization effect through a preset simulation program after optimizing and adjusting the combustor, and meanwhile, the optimization effect of the combustor can be verified according to different combustion environments. And an environment template established in the environment simulation module can be directly called for verification, so that the optimized crude propane burner can be ensured to be normally used in different environments.

The invention discloses a lithium battery thermal runaway and propane gas explosion characteristic equivalent measuring device and method, and belongs to the technical field of thermal runaway tests.The device comprises a battery explosion cabin, a gas explosion cabin and a data terminal, and a heating device for heating a battery to be measured is arranged in the battery explosion cabin; the first thermocouple is used for measuring the ambient temperature in the cabin; the first pressure sensor is used for measuring the internal ambient pressure; the gas explosion cabin is connected with the battery explosion cabin through a ventilation pipeline, and a second thermocouple used for measuring the internal environment temperature of the gas explosion cabin and a second pressure sensor used for measuring the internal pressure of the gas explosion cabin are arranged in the gas explosion cabin; the gas explosion cabin is also connected with a vacuum pump, a high-pressure propane gas cylinder and a high-pressure air cylinder; and the data terminal is used for recording thermal runaway explosion characteristic parameters and propane gas explosion parameters of the gas explosion cabin under different concentrations. According to the invention, equivalent measurement of explosion characteristics of thermal runaway gas and propane gas of the aviation lithium battery can be realized.

The utility model discloses a heptafluoropropane gas fire extinguishing device capable of automatically alarming, which belongs to the technical field of heptafluoropropane gas fire extinguishing devices, and adopts the technical scheme that the heptafluoropropane gas fire extinguishing device comprises a fixing frame, a device body is arranged in the fixing frame, and a pressure gauge is arranged on the surface of the device body; a pressure column, a pointer, a warning mechanism and a fixing mechanism are arranged in the pressure gauge, and an alarm bell frame is arranged in the fixing frame; the warning mechanism comprises a mounting column, a fixing rod, a bent frame, a trigger switch and a trigger, the rear side of the mounting column extends into the pressure column and is in threaded connection with the interior of the pressure column, and the top of the fixing rod extends into the mounting column and is fixedly connected with the interior of the mounting column. And whether the reading of the pressure gauge of the container is in a normal range needs to be checked regularly, so that a worker needs to spend a lot of time to check the reading one by one, and the efficiency is relatively low.

The invention relates to the field of catalysts, and discloses a gas-phase dehydrochlorination catalyst and application thereof. The catalyst takes a carbon nanotube as a carrier, and the surface of the catalyst is plated with non-noble metals such as copper, nickel or cobalt. The preparation method comprises the steps of purification of the carbon nanotubes, sensitization and activation, chemical plating and the like, and the plating solution has a specific composition ratio. The catalyst is used for catalyzing 2-chloro-1, 1, 1, 2-tetrafluoropropane gas phase dehydrochlorination to prepare 2, 3, 3, 3-tetrafluoropropene, under the mild conditions of 200-400 DEG C, normal pressure and air speed of 10-1000 h <-1 >, the highest raw material conversion rate of 52.76% and the highest target product selectivity of 98.42% can be achieved, and the catalyst is good in stability and long in service life. The method has the advantages of low reaction temperature, low energy consumption, high selectivity, recyclable raw materials, low cost and the like.

The utility model discloses a pipe network type heptafluoropropane gas fire extinguishing device, which belongs to the technical field of fire protection equipment, and comprises a storage box, the middle end of the inside of the storage box is fixedly connected with a partition plate, the two sides of the inside of the storage box are both fixedly connected with supporting plates, one side of the upper surface of each supporting plate is fixedly connected with a fixed clamping ring, and the other side of the upper surface of each supporting plate is fixedly connected with a movable clamping ring. And a clamping assembly is fixedly connected to the other side of the upper surface of the supporting plate, a heptafluoropropane storage bottle is arranged on the upper surface of the supporting plate, a connecting opening is fixedly connected to the upper end of the heptafluoropropane storage bottle, and a connecting assembly is arranged on the upper surface of the storage box. Through the arrangement of the clamping assembly, the stability of the storage bottle in the device is ensured, a user can conveniently and rapidly fix or release the heptafluoropropane storage bottle, the time for replacing the storage bottle is shortened, meanwhile, the device is simple in structure, convenient to operate and simple and rapid in daily maintenance and repair, the maintenance cost is reduced, and the working efficiency is improved. The device is suitable for various places needing gas fire extinguishing.

The invention relates to the technical field of preparation of gas separation membranes, and discloses a preparation method of a PIMs / MOFs mixed matrix membrane, the prepared PIMs / MOFs mixed matrix membrane and application of the PIMs / MOFs mixed matrix membrane. The invention relates to a preparation method of a PIMs / MOFs mixed matrix membrane, which comprises the following steps: (1) carrying out hydrolysis activation treatment on a matrix membrane PIM-CN to obtain an activated membrane PIM-COOH; (2) the activated membrane PIM-COOH is in contact with a metal salt solution for ion exchange, a polymer membrane PIM-COOX is obtained, and X is a metal element; and (3) contacting the polymer film PIM-COOX with an organic ligand solution to carry out an in-situ synthesis reaction, and then carrying out first drying. The method can effectively inhibit the interface defect introduced by the traditional solution membrane casting method, and obviously improve the propylene / propane gas separation performance.

The invention belongs to the field of ethylene and related technologies, and discloses a dryer regeneration system and method for gas raw material cracking. The system comprises a gas cracking raw material pipeline, a regeneration gas heat exchange unit, a distribution unit, a dryer user and a regeneration gas treatment unit. Methane / hydrogen tail gas or hydrogen-rich tail gas generated by conventional cracking is not used, circulating ethane generated by a cracking device and raw material ethane gas and raw material propane gas of the device are adopted as regeneration gas, the hydrogen-rich gas can be kept at high pressure and directly used as raw material gas of a PSA hydrogen concentration device, power consumption of a compressor of a PSA unit is reduced, and the energy consumption of the PSA unit is reduced. And the energy consumption of the whole device is reduced while more hydrogen products are produced as byproducts.

1. Name of the product in this design: Propane Monitoring Sensor (Vehicle-mounted). 2. Purpose of this design: To monitor the concentration of propane gas generated after a leak in a new type of refrigerant generator in an automotive air conditioning system, and to provide an alarm to the vehicle when the concentration reaches a warning value. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The application provides a rare earth cluster metal organic framework material for propylene / propane gas separation and a preparation method thereof. The chemical formula of the rare earth cluster metal organic framework material is RE a X b K2L c (H2O) d wherein RE is a rare earth metal element, X is halogen, and L is a tetracarboxylic acid organic ligand; wherein a is greater than 2, b is greater than or equal to 4, c is greater than or equal to 2, and d is greater than or equal to 2; and the structure center of the rare earth cluster metal organic framework material is a hexanuclear rare earth cluster. The application provides a rare earth cluster metal organic framework material with a specific structure, so that the material has a high adsorption separation ratio and a volume propylene adsorption amount, and can be used as a high-efficiency gas adsorbent for separating propylene and propane.