36results about How to "High saturated vapor pressure" patented technology

The invention provides a graphite powder purification method. The method comprises the following steps: graphite powder to be purified is placed into a high-temperature sealed kiln and undergoes vacuum calcination in the atmosphere of protective gas; when the calcination temperature reaches 2,000-3,000 DEG C, multiple pneumatic control variation steps are carried out to control periodic pulsative oscillation change of air pressure in the high-temperature sealed kiln. Each pneumatic control variation step contains a gas withdrawal step and a gas injection step. For 1-3 h of each pneumatic control variation step, range of pressure change in the high-temperature sealed kiln is controlled to 1-10 kPa. According to the invention, the graphite powder with high carbon content can be obtained under the condition of low calcination temperature. The preparation process is simple, and the requirement on equipment is low.

The invention relates to environmental-friendly high-temperature resistant impregnated resin and applications thereof. The impregnated resin comprises heat-resistant unsaturated polyester resin, alicyclic epoxy resin, bisphenol A epoxy resin, a curing agent, DCP, para-tert-butylcatechol and an active diluting agent. The impregnated resin can be used for impregnating insulation of F / H level medium and large high-voltage motors, wind driven generators and other refrigerant resistant motors and electric appliance windings. The impregnated resin is low-viscidity low-volatilization non-hygroscopic solvent-free resin of the 200 DEG C level. The impregnated resin is environmental friendly, safe and wide in application.

The invention relates to a method for achieving substance purification through suspension smelting. The method comprises the steps that S100, a vacuum suspension smelting device is provided; S200, to-be-purified substance raw materials and metal are put into the vacuum suspension smelting device, impurities exist in the to-be-purified substance raw materials, the relation curve of the impurities is close to that of the saturated vapor pressure and temperature of to-be-purified substances, and the melting point of the metal is higher than that of the to-be-purified substances; and S300, the vacuum suspension smelting device is used for heating, the to-be-purified substances evaporate, and therefore the to-be-purified substances are separated from the impurities and the metal.

The invention discloses a device for generating electricity by using dead steam discharged by a steam turbine. The device comprises a liquid ammonia storage tank (3), a pressure boosting pump (4), an evaporator (5), a turbine (1) and a condenser (2). The inlet of the liquid ammonia storage tank (3) is connected with the outlet of the condenser (2), the outlet of the liquid ammonia storage tank (3) is connected with the liquid ammonia inlet of the evaporator (5) by the pressure boosting pump (4), the liquid ammonia steam outlet of the evaporator (5) is connected with the inlet of the turbine (1), and the outlet of the steam turbine (1) is connected with the inlet of the condenser (2), so that a closed loop is formed. The heating loop of the evaporator (5) is connected with the dead steam outlet of the steam turbine, and preferably, a superheater (7) is arranged between the liquid ammonia steam outlet of the evaporator (5) and the inlet of the turbine (1). Compared with the prior art, the invention has the advantages that: by selecting a proper medium, the low-grade heat energy of the dead steam discharged by the steam turbine is effectively utilized, equipment is simplified, cost is lowered, and the overall heat energy utilization efficiency of a generating system is improved.

The invention discloses a method and equipment for improving the heat efficiency of an automobile fuel. According to the method, the automobile fuel before entering a cylinder is heated, thus the heat efficiency of the fuel is improved; and in particular, an electromagnetic induction coil is used for heating, the operation is convenient, safe and reliable, and the electromagnetic induction heating efficiency is high. The equipment comprises a heating unit, wherein the heating unit comprises a heating control main board, a power supply acquisition module, a relay and a heating module; the power supply acquisition module, the relay and a heating control unit are sequentially connected, and the heating module is controlled by the heating control main board; the relay is connected with an automobile-mounted storage battery; and the heating module is arranged at an oil rail or an oil nozzle of an automobile oil supply system. The reaction speed and the flame propagation speed of a mixed gas in the cylinder are increased according to the detonation theory of the mixed gas, thus an engine power is improved; and more chemical energy of the fuel is converted to kinetic energy, thus the heat efficiency of the fuel is increased, and the effects of energy conservation and emission reduction are achieved.

The invention discloses a vapor-phase corrosion inhibitor and a preparation method thereof. The vapor-phase corrosion inhibitor comprises the following components in percentage by mass: 8-15% of alkynyl amine, 8-15% of organic solvent and the balance of water. The preparation method comprises the following steps: uniformly mixing the alkynyl amine and water according to the formula proportion to obtain an alkynyl amine water solution; and adding the organic solvent into the alkynyl amine water solution according to the formula proportion, and uniformly mixing to obtain the vapor-phase corrosion inhibitor. The vapor-phase corrosion inhibitor has higher saturated vapor pressure, has obvious corrosion inhibition effect on carbon steel atmospheric corrosion, and has enduring protection action. Compared with the bicyclohexylamine nitrite, cyclohexylamine carbonate and other vapor-phase corrosion inhibitors, the vapor-phase corrosion inhibitor disclosed by the invention has smaller toxic and side effects and more obvious corrosion inhibition effect. The vapor-phase corrosion inhibitor disclosed by the invention has the advantages of accessible raw materials, simple preparation technique and small toxic and side effects, can effectively lower the corrosion rate of the carbon steel atmospheric corrosion, and can prolong the service life of various steel apparatuses and facilities.

There is proposed a chemical reactor comprising a vessel for housing an organic raw material having a higher saturated vapor pressure than atmospheric pressure, a reformer for reforming at least a portion of the organic raw material into a reformed gas, an inlet flow channel to which the vessel is removably attached, enabling the vessel to be communicated with the reformer, and an inlet port side cut-off valve disposed in the inlet flow channel and designed to be brought into an open state as the vessel is attached, thus permitting the organic raw material to pass through the inlet flow channel, and brought into a closed state as the vessel is removed from the inlet flow channel, thus cutting off the inlet flow channel.

The invention belongs to the technical field of electrolytes, and particularly relates to a low-resistivity electrolytic capacitor-used electrolyte and a preparation method thereof. The low-resistivity electrolytic capacitor-used electrolyte provided by the invention is mainly composed of ethylene glycol, ammonium adipate, ammonium formate, additives and ultrapure water, wherein the additives comprises ethylene glycol, ammonium dihydrogen phosphate, phosphorous acid, silicon dioxide, a complexing agent, a surfactant and a hydrogen removing agent. The low-resistivity electrolytic capacitor-used electrolyte is applicable to a low-voltage electrolytic capacitor, and has the advantages of high frequency, low impedance, low electric leakage and low corrosivity; the electrolyte can restrain a hydration deterioration reaction of an electrode aluminum foil and rebound of leakage current, can also prevent an electrolytic capacitor floor heave phenomenon and can effectively prolong the service life of the electrolytic capacitor.

The invention discloses a heat exchanging method of liquid natural gas (LNG) cold energy used for a high-temperature-level cold energy user. According to the method, in the process of LNG entering tube passes of the upper portions of heat exchangers from an LNG storage tank, heat exchanging is achieved among the LNG, first refrigerant and nitrogen added into shell passes of the upper portions of the heat exchangers, and the temperature rises; the LNG passes through an air vaporizer and enters a natural gas pipeline network after the temperature rises; on the upper portions of the heat exchangers, the temperature of the first refrigerant and the nitrogen coming out of a refrigerant storage tank decreases to -40 DEG C-0 DEG C after heat exchanging is performed among the first refrigerant, the nitrogen and the LNG, and the first refrigerant and the nitrogen come into a liquid phase from a gas phase and enter the lower portions of the heat exchangers; the pressure PB of the nitrogen is determined through the formula (6) shown in the specification; the cooled first refrigerant achieves heat exchanging with second refrigerant on the lower portions of the heat exchangers, the temperature of the first refrigerant rises, the first refrigerant comes into a gas phase from the liquid phase and returns to the upper portions of the heat exchangers, and therefore a cycle is completed. Through using the usage amount of the nitrogen for changing the partial pressure of the refrigerant, the sensitivity of system operation is improved while the freezing point of the first refrigerant is lowered, and safety and stability in the heat exchanging process are guaranteed.

The invention provides an electric pile heating device and a fuel cell system hierarchical control method, and belongs to the field of cells. An air inlet pipe of an air compressor is connected to anoutlet pipe of an air filter through an air flow meter. An inlet pipe of the intercooler is connected to an outlet pipe of the air compressor, and the intercooler is connected with an inlet cooling pipe and an outlet cooling pipe. A dry air side inlet of the humidifier is connected to a first outlet pipe of the intercooler; a humid air side outlet of the humidifier is connected to the mixing and discharging device through a back pressure valve; an air inlet of the galvanic pile is connected to a dry air side outlet of the humidifier, and an air outlet of the galvanic pile is connected to a wetair side inlet of the humidifier; an inlet pipe of the preheating valve is connected to a second outlet pipe of the intercooler, and an outlet pipe of the preheating valve is connected to an air inlet pipe of the air compressor. The controller is electrically connected with the air flow meter, the air compressor, the preheating valve, the back pressure valve and the galvanic pile. The device is small in occupied space, and the power consumption of low-temperature cold start of the whole fuel cell system is reduced.

The invention discloses a device and a method for preparing a rare earth doped optical fiber. According to the preparation process, the rare earth chelate has extremely high saturated vapor pressure at about 200 DEG C, so that the complexity of equipment can be reduced, and the process is convenient to control; the flow of carrier gas He is adjusted through the MFC to control the concentration of rare earth ions, so that accurate doping is realized; by utilizing the characteristics that a co-doping agent aluminum trichloride has extremely high vapor pressure at a high temperature of 100-200 DEG C, but the aluminum trichloride is easy to absorb water vapor to deliquesce and has strong corrosivity, a pure quartz glass crucible or a pure aluminum trichloride crucible is adopted to heat and evaporate in a liner tube, and the doping amount of the aluminum trichloride is controlled by adjusting the temperature.

The invention discloses a continuously adjustable standard gas distribution device which is characterized by comprising a gas source, a mixed gas distribution chamber, a sample chamber and a gas analyzer, wherein the mixed gas distribution chamber and the sample chamber are arranged in the same heating chamber; the mixed gas distribution chamber is communicated with the gas source, the sample chamber and the gas analyzer respectively through pipelines; the sample chamber is located below the mixed gas distribution chamber; the top of the sample chamber is communicated with the mixed gas distribution chamber through a connection pipeline; an opening is formed in the bottom end of the sample chamber; the opening is closed through a thread plug; sample bottles with standard samples are put into the sample chamber through the opening, and bottle openings of the sample bottles are pressed at a pipe orifice in the top of the sample chamber through the thread plug. According to the continuously adjustable standard gas distribution device disclosed by the invention, in order to guarantee a continuously constant concentration of standard gas, headspace gas distribution is adopted. A semivolatile sample is heated at high temperature, so as to increase saturated vapor pressure of a sample. The standard gas distribution device has the advantages of small size, simple structure and continuous adjustability.

This invention relates to a coldstart additive for methanol fuel. The additive is composed of: hydrocarbon 83-90 vol.%, ketone 5-8 vol.%, ether 2-4 vol.% and alcohol 3-5 vol.%. Once added into methanol fuel, the additive can effectively increase the low-temperature steam pressure of methanol fuel, and can solve the coldstart problem of methanol automobiles in winter.

The invention discloses an antifoaming agent for phosphoric acid extracting production. The antifoaming agent comprises, by weight, 20-40 parts of an antifoaming dispersant, 20-50 parts of a foaming inhibitor, 5-30 parts of an emulsifier and 20-60 parts of water. The antifoaming agent of the invention solves the defoaming problem of wet process phosphoric acid by combining the antifoaming and foam-inhibiting components; and the antifoaming agent of the invention does not affect the quality of the phosphoric acid, and has good antifoaming and foam-inhibiting effect in phosphoric acid extraction. The invention also discloses a preparation method of the antifoaming agent for phosphoric acid extracting production. The preparation method comprises the following steps: adding water into a reaction kettle, simultaneously slowly adding the foam inhibitor and the emulsifier to the obtained water bath pot, performing stirring at room temperature for 10-20 min, then slowly adding the antifoamingdispersant, and performing stirring for 2-4 min. The preparation method of the invention has the advantages of simple process, easiness in preparation, and short reaction time.

The invention discloses a method for realizing on-site rapid high-sensitivity detection of drugs by combining pulse purging and halogen lamp flash thermal desorption. Devices in the method mainly comprise a photo-thermal halogen lamp, a high-temperature-resistant quartz optical lens, a high-voltage pulse valve, a heatable thermal desorption micro-area and the like. The main principle of the methodis that the halogen lamp is used for rapidly heating the heatable thermal desorption micro-area to heat the drugs, and the drugs can be heated to 250 DEG C or above at a focus within 2 seconds, so that the saturated vapor pressure of the drugs is greatly improved, and meanwhile, the diffusion of the samples in space is effectively reduced by virtue of the constructed narrow thermal desorption micro-area; and the instantaneous high-speed purging of a pulse valve is combined to more effectively transmit the sample steam from the heatable thermal desorption micro-area to the ionization area, sothat the utilization rate of the samples is improved. The flash thermal desorption temperature rise speed of the halogen lamp is high, sample residues are small, and compared with a traditional constant-temperature metal contact type heating mode, the method is reduced in power consumption greatly; and the combination of the two fully meets the requirements of on-site portable analytical instruments.

The invention discloses a rare earth niobate high-entropy powder, a porous high-entropy ceramic, a preparation method and an application, and belongs to the technical field of high-entropy materials. The raw materials of the rare earth niobate high-entropy powder include rare earth trioxide and niobium pentoxide; the rare earth trioxide is dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide, and yttrium oxide. In the mixture of 5-7 different trioxides, in any two trioxides, the molar ratio of the trioxide with a large amount to the trioxide with a small amount is 1-3. The present invention introduces different rare earth metal cations through the high entropy of niobate ceramic components. Due to the difference in atomic size in the high entropy phase, its atomic occupancy is shifted, which further leads to lattice distortion and increases the Phonon scattering; Rare earth niobate porous high-entropy ceramics have excellent thermal insulation properties due to the introduction of pore structure that reduces the solid-phase thermal conductivity of the material.

The present invention relates to a kind of starter of liquid rocket engine and design method thereof, is provided with propellant storage tank, add discharge valve, solenoid valve, gas generator and igniter; Store nontoxic self-pressurized propellant in the propellant storage tank, because The saturated vapor pressure of the medium is relatively high, and the driving pressure of the propellant can be provided by using the pressure of the medium itself; there is a filling and discharging valve connected to the connecting pipeline between the storage tank and the solenoid valve to fill and discharge the non-toxic self-pressurized medium. After the solenoid valve Connect the inlet of the gas generator through the pipeline, ignite the propellant to generate gas, and the gas enters the downstream turbine casing at high speed, and drives the turbine to rotate to realize the start of the engine. The invention adopts the nitrous oxide-based composite propellant, which has the advantages of green and non-toxic, high saturated vapor pressure, high specific impulse, low use cost and easy maintenance. The starter is simple in structure, light in weight, non-toxic and pollution-free, can be started many times, and can be used repeatedly.

The invention discloses a method for realizing on-site rapid high-sensitivity detection of drugs by combining pulse purging and halogen lamp flash thermal desorption. Devices in the method mainly comprise a photo-thermal halogen lamp, a high-temperature-resistant quartz optical lens, a high-voltage pulse valve, a heatable thermal desorption micro-area and the like. The main principle of the methodis that the halogen lamp is used for rapidly heating the heatable thermal desorption micro-area to heat the drugs, and the drugs can be heated to 250 DEG C or above at a focus within 2 seconds, so that the saturated vapor pressure of the drugs is greatly improved, and meanwhile, the diffusion of the samples in space is effectively reduced by virtue of the constructed narrow thermal desorption micro-area; and the instantaneous high-speed purging of a pulse valve is combined to more effectively transmit the sample steam from the heatable thermal desorption micro-area to the ionization area, sothat the utilization rate of the samples is improved. The flash thermal desorption temperature rise speed of the halogen lamp is high, sample residues are small, and compared with a traditional constant-temperature metal contact type heating mode, the method is reduced in power consumption greatly; and the combination of the two fully meets the requirements of on-site portable analytical instruments.

The invention provides a graphite powder purification method. The method comprises the following steps: graphite powder to be purified is placed into a high-temperature sealed kiln and undergoes vacuum calcination in the atmosphere of protective gas; when the calcination temperature reaches 2,000-3,000 DEG C, multiple pneumatic control variation steps are carried out to control periodic pulsative oscillation change of air pressure in the high-temperature sealed kiln. Each pneumatic control variation step contains a gas withdrawal step and a gas injection step. For 1-3 h of each pneumatic control variation step, range of pressure change in the high-temperature sealed kiln is controlled to 1-10 kPa. According to the invention, the graphite powder with high carbon content can be obtained under the condition of low calcination temperature. The preparation process is simple, and the requirement on equipment is low.

The invention discloses a gas phase corrosion inhibitor and a preparation method thereof. The vapor phase corrosion inhibitor comprises 8% to 15% of alkyne amine and 8% to 15% of organic solvent according to mass percentage, and the balance is water. Its preparation method comprises the following steps: first, uniformly mix the alkyne amine and water in the formula ratio to obtain an aqueous solution of the alkyne amine; then, add an organic solvent in the formula ratio to the aqueous solution of the alkyne amine and mix evenly to obtain the gas phase corrosion inhibitor agent. The gas-phase corrosion inhibitor has a high saturated vapor pressure, has a significant corrosion inhibition effect on atmospheric corrosion of carbon steel, and has a long-lasting protective effect. At the same time, compared with gas-phase corrosion inhibitors such as dicyclohexylamine nitrite and cyclohexylamine carbonate, the gas-phase corrosion inhibitor provided by the invention has less toxic and side effects and more significant corrosion inhibition effect. The gas-phase corrosion inhibitor provided by the invention has easy-to-obtain raw materials, simple preparation process, and less toxic and side effects, can effectively reduce the corrosion rate of atmospheric corrosion of carbon steel, and prolong the service life of various iron and steel instruments and equipment.

The invention relates to the technical field of the electrical equipment, and especially relates to a mixed dielectric and medium-voltage or high-voltage electrical equipment. The invention disclosesa mixed dielectric, and comprises perfluoroolefine and hydrofluoroolefin; carbon atom number of each of the perfluoroolefine and hydrofluoroolefin is three; the global warming potential of the perfluoroolefine and hydrofluoroolefin is lower than that of the hydrofluoroolefin; the mole percent MFO of the perfluoroolefine and hydrofluoroolefin is not less than 95% of the mole percent M determined bythe formula M=(PFO / PMixture)*100, wherein the Pmixture is the pressure of the mixed dielectric in the electrical equipment at 20 DEG C, and the PFO is equal to the saturated vapor pressure at the lowest operation temperature of the perfluoroolefine and hydrofluoroolefin at the electrical equipment at 20 DEG C. The mixed dielectric is low in GWP value and high in saturated vapor pressure and dielectric constant, the defect that the dielectric insulation / arc-extinguishing performance is limited since the saturated vapor pressure of single perfluoroolefine or hydrofluoroolefin is not high enoughis overcome.

The invention discloses a germanium sulfide polycrystalline film and a preparation method thereof, and a solar cell containing the germanium sulfide polycrystalline film. The thickness of the germanium sulfide polycrystalline film is 400-800nm, which is obtained by adding seed layer pre-deposition and post-step in-situ annealing (three-step method) on the basis of the traditional near-space rapid sublimation method. The process is simple to operate. And coherence can be realized by adjusting the switching sequence of nitrogen gas and air pump, and a substrate suitable for depositing germanium sulfide is obtained by two-step magnetron sputtering method and high temperature selenization. The p-type layer material germanium sulfide (GeS) in the solar cell is an inexpensive and environmentally friendly semiconductor optoelectronic material with a band gap of about 1.73 eV, covering most of the visible light spectrum, and an absorption coefficient as high as 10 5 cm ‑1 Therefore, the thin-film solar cell composed of it as the absorber layer will have great application prospects.

This invention relates to a refrigeration method and a refrigerator thereof. Said refrigeration method is a rotation refrigeration method in which the evaporation course is a periodic vacuuming evaporation course, the condensation course is that steam refrigerant is directly compressed and liquefied into the liquid refrigerant in the cooling stage, said two course are formed when the refrigerating container acts revolution and revolution on its own axis. Said refrigerator is a rotary refrigerator which comprises power part, evaporation part and condensation part, a connection tube connected to the evaporation part and the condensation part, a hollow internal revolver and an external revolver and several refrigeration containers passing around between the hollow internal revolver and the hollow external revolver.

The invention relates to a method for recovering high-purity tin-indium alloy from ITO (indium tin oxide) target waste, which takes the ITO target waste as an anode plate, and comprises the following steps: (1) dissolving; (2) primary purification; and (3) secondary purification. The large-size anode plate and the small-size cathode plate form a weak non-uniform electric field under the action of micro current, indium and tin in the ITO target material waste are rapidly dissolved in the electrolyte to form a pure indium and tin solution under the non-uniform electric field, then the indium and tin solution is used as the electrolyte to perform secondary micro-current electrolysis, and due to the fact that the electric field is non-uniform, the indium and tin in the ITO target material waste are subjected to secondary micro-current electrolysis. The indium-tin alloy does not drift to the cathode for deposition but rapidly sinks to the bottom of the electrolytic bath, so that cathode and anode short circuit is avoided; according to the method, the recovery rate of the indium-tin alloy is increased to 80% or above.

The invention relates to a liquid rocket engine starter and a design method thereof. The liquid rocket engine starter is provided with a propellant storage tank, a filling and discharging valve, an electromagnetic valve, a fuel gas generator and an igniter, a non-toxic self-pressurization propellant is stored in the propellant storage tank, and due to the fact that the saturated vapor pressure ofa medium is high, driving pressure can be provided for the propellant through the pressure of the medium; and the filling and discharging valve is connected to a connecting pipeline of the storage tank and the electromagnetic valve to fill and discharge the non-toxic self-pressurization medium, the rear portion of the electromagnetic valve is connected with an inlet of the fuel gas generator through a pipeline, the propellant is ignited to generate fuel gas, the fuel gas enters a downstream turbine shell at a high speed and pushes a turbine to rotate, and starting of an engine is achieved. Theliquid rocket engine starter adopts the nitrous oxide-based composite propellant, and has the advantages of being green, non-toxic, high in saturated vapor pressure, high in specific impulse, low inuse cost and easy to maintain; and the starter is simple in structure, light in weight, non-toxic and pollution-free, can be started for multiple times, and can be repeatedly used.

The invention relates to a method for achieving substance purification through suspension smelting. The method comprises the steps that S100, a vacuum suspension smelting device is provided; S200, to-be-purified substance raw materials and metal are put into the vacuum suspension smelting device, impurities exist in the to-be-purified substance raw materials, the relation curve of the impurities is close to that of the saturated vapor pressure and temperature of to-be-purified substances, and the melting point of the metal is higher than that of the to-be-purified substances; and S300, the vacuum suspension smelting device is used for heating, the to-be-purified substances evaporate, and therefore the to-be-purified substances are separated from the impurities and the metal.

The invention discloses a heat exchanging method of liquid natural gas (LNG) cold energy used for a high-temperature-level cold energy user. According to the method, in the process of LNG entering tube passes of the upper portions of heat exchangers from an LNG storage tank, heat exchanging is achieved among the LNG, first refrigerant and nitrogen added into shell passes of the upper portions of the heat exchangers, and the temperature rises; the LNG passes through an air vaporizer and enters a natural gas pipeline network after the temperature rises; on the upper portions of the heat exchangers, the temperature of the first refrigerant and the nitrogen coming out of a refrigerant storage tank decreases to -40 DEG C-0 DEG C after heat exchanging is performed among the first refrigerant, the nitrogen and the LNG, and the first refrigerant and the nitrogen come into a liquid phase from a gas phase and enter the lower portions of the heat exchangers; the pressure PB of the nitrogen is determined through the formula (6) shown in the specification; the cooled first refrigerant achieves heat exchanging with second refrigerant on the lower portions of the heat exchangers, the temperature of the first refrigerant rises, the first refrigerant comes into a gas phase from the liquid phase and returns to the upper portions of the heat exchangers, and therefore a cycle is completed. Through using the usage amount of the nitrogen for changing the partial pressure of the refrigerant, the sensitivity of system operation is improved while the freezing point of the first refrigerant is lowered, and safety and stability in the heat exchanging process are guaranteed.

The invention discloses an oil gas automatic recovery system capable of remote monitoring, comprising: a main recovery device, which includes a main recovery pipeline, a first recovery group and a second recovery group arranged in parallel with the first recovery group, the first pipeline and the oil gas The intake pipe is connected, and the second pipe is connected with the exhaust gas discharge pipe, so that the first recovery group and the second recovery group alternately carry out the adsorption and desorption of oil and gas; the first recovery group and the second recovery group are equipped with the first adsorption bed and the second adsorption bed, the first adsorption bed and the second adsorption bed are respectively built-in polyvinyl fluoride nanomaterials for adsorption and desorption of oil and gas; oil and gas absorption tank; buried oil tank; monitoring device, which includes a controller and The monitoring device is connected with the controller to monitor the gas concentration at the outlet of the waste gas discharge pipe in real time. The invention can monitor the discharge index in real time, ensures the operation of the system when the discharge reaches the standard, adopts the adsorption bed to rotate adsorption and desorption, improves the operation efficiency of the recovery system, and occupies a small area.

The invention discloses a germanium sulfide polycrystalline thin film and a preparation method thereof, and a solar cell containing the germanium sulfide polycrystalline thin film. The thickness of the germanium sulfide polycrystalline thin film is 400-800nm, the germanium sulfide polycrystalline thin film is prepared by adding seed crystal layer pre-deposition and subsequent in-situ annealing (three-step method) on the basis of a traditional near-space rapid sublimation method, the process is simple and coherent in operation and can be realized by adjusting the switching sequence of nitrogen and an air pump, and a substrate suitable for depositing the germanium sulfide is obtained by utilizing a two-step magnetron sputtering method and high-temperature selenylation. The p-type layer material germanium sulfide (GeS) in the solar cell is a low-price and environment-friendly semiconductor photoelectric material, the band gap is about 1.73 eV, most visible light spectrums are covered, and the light absorption coefficient is up to 105 cm <-1 >, so that the thin-film solar cell formed by adopting the GeS as the absorption layer has a great application prospect.