22 results about "Inert gas dilution" patented technology

The invention discloses a flame-retardant PA66 material and a preparation method thereof.The flame-retardant PA66 material is prepared from, by weight, 80-100 parts of a modified PA66 material, 3-5 parts of modified graphene, 15-30 parts of a flame-retardant additive and 0.1-0.5 part of tetraphenylphosphorus bromide, a molecular chain of the flame-retardant additive contains an organic silicon chain segment and an organic phosphorus structure and is doped with nitrogen and boron elements, and when the material is burnt, the flame-retardant PA66 material has a flame-retardant effect, and the flame-retardant PA66 material has a flame-retardant effect. The organic phosphorus can be dehydrated to form a phosphoric acid carbon layer, the nitrogen element can release inert gas, dilute combustible gas and generate an expansive phosphorus-nitrogen carbon layer with the organic phosphorus, the boron element can improve the compactness and high-temperature stability of the carbon layer, and the organic silicon can form a cross-linked network shape, so that the continuity of the carbon layer is improved; a fluorine-containing polysiloxane chain segment of a side chain of the flame-retardant additive is embedded among molecules of the modified PA66 material, and is decomposed to generate fluorine free radicals during combustion, and active free radicals in a combustion chain reaction are quenched, so that a rapid flame-retardant effect is achieved.

The invention discloses a method for multi-batch negative pressure deposition of silicon in porous carbon based on staged parameter optimization, and relates to the technical field of vapor deposition on the surface and in pores of a porous material. According to the method, under the negative pressure condition, the deposition rate is controlled by adjusting the single-batch gas amount, the inert gas proportion, the pressure and the temperature according to the deposition process, and silane is optimally introduced in stages. The technological process comprises the steps that low-gas-amount and inert gas is introduced for dilution in the early stage, orifice blockage is delayed, the gas amount is increased in the middle stage, inner layer filling is accelerated, the gas amount or temperature is reduced in the later stage, and over-deposition of the outer surface is avoided. The invention relates to a process optimization method and a matched system for multi-batch deposition of silicon and oxides thereof under a negative pressure condition by using a porous carbon material with auxiliary mesopores.

The application discloses a preparation method of fluorine oil high-value liquid density standard substance and application thereof, and comprises the following steps: 1) fluorine gas diluted by inert gas is introduced to make fluorine oil intermediate perform fluorination reaction, and fluorine oil base oil with an acid value less than 0.02 mgKOH / g is obtained; 2) the fluorine oil base oil obtained in the step 1) is subjected to molecular distillation, and fluorine oil base oil with a distillation fraction greater than 230 DEG C is preferentially removed, so that single distillation fraction fluorine oil is obtained; and 3) the single distillation fraction fluorine oil obtained in the step 2) is subjected to adsorption filtration, so that high-cleanliness target fluorine oil is obtained. Through development of a specific preparation method, the application develops a kind of liquid density standard substance which is non-toxic, stable, has high density value and meets uncertainty requirements, so as to match development of domestic full series liquid density standard substances, fill the domestic and international blank, and meet the use requirements of domestic market for liquid density standard substances.

The invention provides a hydrogen concentration monitoring and diluting system and method for a crankcase of a hydrogen internal combustion engine, and the system comprises a hydrogen concentration monitoring device which is arranged on an exhaust pipeline of the crankcase and is used for monitoring the hydrogen concentration in exhaust gas; the controller is connected with the hydrogen concentration monitoring device and is configured to output a control signal according to a comparison result of the hydrogen concentration and a preset concentration threshold value; and the inert gas diluting device is connected with the controller and is used for receiving the control signal and spraying inert gas to an exhaust pipeline so as to dilute hydrogen. According to the system, the hydrogen concentration monitoring device is arranged to monitor exhaust of the crankcase in real time, the controller is utilized to control starting and stopping of the inert gas dilution device according to the monitoring result, active management of the hydrogen concentration in the crankcase is achieved, the risk of burning explosion of the crankcase in a hydrogen internal combustion engine test is eliminated, and the problem of pipeline blockage is solved.

The invention belongs to the field of power equipment fire extinguishing, and particularly relates to an automatic fire extinguishing energy storage cabinet which comprises an air inlet mechanism, a carrying mechanism and a fire extinguishing mechanism. Through the gas inlet mechanism and the carrying mechanism, when a main line is disconnected, the interior is sealed, inert gas is added, internal oxygen is diluted, the fire behavior is reduced, meanwhile, loss can be effectively reduced, and the technical effect of low-loss fire extinguishing is achieved; when the fire behavior cannot be controlled, air pressure in the air inlet mechanism and the carrying mechanism can be exhausted through the pressure release valve, and the temperature threshold value of the thermosensitive element is triggered by gas passing through the pressure release valve, so that the electric control valve is started, and a water-based solution in the water-based bottle is sprayed out of the fire-fighting spray head after passing through the flow dividing pipeline and the liquid conveying channel to extinguish fire; efficient fire extinguishing is achieved when loss cannot be reduced, and the technical problems that existing equipment is not timely in fire extinguishing, and loss cannot be reduced are solved.

The application relates to the technical field of electric appliance cabinets, and discloses an outdoor protection type electric appliance cabinet applied to a power system, which comprises an electric appliance cabinet main body, a bottom box fixedly installed at the bottom of the electric appliance cabinet main body, a plurality of gas tanks arranged in the bottom box, a plurality of air injection pipes arranged on the cabinet door of the electric appliance cabinet main body, a gas conveying pipe jointly connected between the plurality of gas tanks and the plurality of air injection pipes, a sealing assembly arranged on the inner wall of the electric appliance cabinet main body at a ventilation opening, and drive mechanisms arranged at the two ends of one of the air injection pipes, wherein the drive mechanisms are used for driving a baffle to rotate to seal the ventilation hole. While the air injection pipes inject inert gas into the cabinet body, the gas pressure drives the connecting rod to ascend to release the limit of the baffle, the baffle rotates downward to seal the ventilation opening, the ventilation hole is sealed, the oxygen in the cabinet body is diluted by the inert gas to a concentration that cannot burn, and the fire extinguishing efficiency and reliability are remarkably improved.

The present application belongs to the field of solid acid catalysts, and particularly relates to a preparation method of a porous solid acid catalyst, comprising the following steps: step i: using an organic solvent to reflux and swell a porous resin at 80 DEG C, and filtering the swollen porous resin to remove the excess solvent; step ii: loading the porous resin into a reactor, and introducing SO3 gas diluted by an inert gas, and sulfonating the porous resin at 120 DEG C and 140 DEG C for 2 h respectively under a certain reaction pressure, then increasing the temperature to 170 DEG C, and continuing to sulfonate for 1 h, and then placing the sulfonated sample in an air environment at room temperature for 5-12 h; step iii: step-by-step acid washing the sulfonated sample, and sequentially using concentrated sulfuric acid with mass concentrations of 80%, 50%, 30%, 10% and 5% to wash the sulfonated resin, and finally washing the sulfonated resin with deionized water for several times, and then drying at 100 DEG C overnight to obtain the porous solid acid catalyst.

The application discloses a method for multi-batch negative pressure deposition of silicon in porous carbon based on staged parameter optimization, and relates to the technical field of gas phase deposition on the surface and in the pores of porous materials. The application proposes to adjust the single-batch gas volume, the proportion of inert gas, the pressure and the temperature to control the deposition rate under the condition of negative pressure, and to optimize the input of silane in stages. The process flow is as follows: in the early stage, low gas volume is inputted to dilute the inert gas to delay the blockage of the pore, in the middle stage, the gas volume is increased to accelerate the filling of the inner layer, and in the later stage, the gas volume or the temperature is reduced to avoid over-deposition of the outer surface. The method and the matching system are suitable for the process optimization method for the multi-batch deposition of silicon and oxides of silicon in porous carbon materials under the condition of negative pressure, and the porous carbon materials mainly have micropores and auxiliary mesopores.

The application belongs to the field of power equipment fire extinguishing, and specifically relates to an automatic fire extinguishing energy storage cabinet, which comprises an air inlet mechanism, a carrying mechanism and a fire extinguishing mechanism. The air inlet mechanism and the carrying mechanism are used to seal the inside when the main line is disconnected, dilute the internal oxygen with inert gas, reduce the loss while reducing the fire, and achieve the technical effect of low-loss fire extinguishing. When the fire cannot be controlled, the air pressure in the air inlet mechanism and the carrying mechanism is discharged through the pressure relief valve, the temperature threshold of the heat-sensitive element is triggered by the gas passing through the pressure relief valve, the electric control valve is started, the water-based solution in the water-based bottle is discharged through the overflow pipe and the infusion channel, and then sprayed from the fire nozzle to extinguish the fire. When the loss cannot be reduced, efficient fire extinguishing is achieved, and the technical problems of the prior art that the existing equipment cannot extinguish the fire in time and cannot reduce the loss are solved.

The invention relates to the technical field of hydrogen production through water electrolysis, and discloses an inert gas dilution adjusting system and method for the hydrogen concentration in oxygen in all working conditions of an electrolytic bath, and the inert gas dilution adjusting system comprises a hydrogen content detection unit, a control unit and an inert gas storage unit. The hydrogen content detection unit is arranged on the anode side of the electrolytic bath and connected with a gas flow adjusting unit. The output end of the gas flow regulating unit is connected with a gas circulating inlet of the electrolytic bath, and the input end is connected with an inert gas storage unit. The hydrogen content detection unit is used for detecting the hydrogen concentration in the anode side gas of the electrolytic cell and sending the detection result to the gas flow adjusting unit. And the gas flow adjusting unit is used for adjusting the inert gas storage unit to output the inert gas to the gas circulation inlet under the condition that the hydrogen concentration exceeds a preset hydrogen concentration threshold value, so that the hydrogen concentration in the anode side gas is diluted by using the inert gas. Therefore, safe operation requirements under different working conditions can be accurately matched, and the reliability of system operation is improved.

The present invention relates to the field of flue gas nitrogen oxide emission, and in particular to a method and a combustion system for reducing nitrogen oxide emission. Introducing non-nitrogen inert gas as a combustion diluent to establish ignition; when the amount of circulation flue gas reaches a designed value, the introduction of the non-nitrogen inert gaseous diluent is stopped; and by means of circulation of a part of flue gas and a part of CO2 in the flue gas, the internal circulation of the whole process system is ensured. The present invention achieves the objectives of reducing the nitrogen oxide emission and saving the fuel, thereby saving the energy, protecting the environment, fundamentally solving the emission problem of NOx in the flue gas, and achieving carbon reduction.

The invention is suitable for the technical field of intelligent construction and safety protection of an expressway precast beam field, and provides an intelligent production control system and method for the expressway precast beam field, and the system comprises an image data obtaining module which is used for obtaining a historical cleaning record of a target template in the production process of the precast beam field, extracting an initial target image of the target template after the previous cleaning; acquiring operation data of the localized capturing cover, wherein the operation data comprises the moving speed of the localized capturing cover moving along the target template and a current primary grinding image shot by a first camera arranged in the imaging bin; the combustible dust proportion can be predicted in advance according to the old oil film volume estimation value and the residual slurry volume estimation value, the inert gas dilution and anti-explosion operation mode can be actively triggered before dust enters a dust removal system, and the dust explosion risk prevention and control capacity is remarkably improved.

The invention discloses a preparation method of cyanuric fluoride, which comprises the following steps: S1, preparation of a cyanuric chloride solution: dissolving cyanuric chloride into a solvent to obtain the cyanuric chloride solution; s2, preparation of mixed gas: diluting fluorine gas with inert gas to obtain the mixed gas; and S3, fluorination reaction: in the continuous microreactor, enabling the cyanuric chloride solution and fluorine in the mixed gas to react to generate cyanuric fluoride. The method does not need a catalyst, is short in reaction time, high in preparation efficiency, simple in process, low in cost, few in three wastes, high in product yield and suitable for industrial production.

The application discloses an easy-to-overhaul energy storage battery cabinet and relates to the technical field of energy storage battery cabinets. The easy-to-overhaul energy storage battery cabinet comprises a cabinet shell body, a maintenance door rotatably connected to the rear side of the cabinet shell body, a partition plate fixedly connected to the inside of the cabinet shell body and used for placing battery assemblies, and an auxiliary box fixedly connected to the side of the cabinet shell body. The position of the first magnetic block gradually moves to the corresponding position of the second magnetic block. Since the second magnetic block and the first magnetic block have the same magnetism, the second magnetic block slides along the limiting rod and presses the reset spring under the magnetic repulsion of the same polarity, simultaneously driving the fixedly connected spoiler on the lower side to move synchronously, disturbing the inert gas deposited in the auxiliary box, accelerating the gas flow, ensuring that the inert gas can be smoothly and sufficiently discharged into the inside of the cabinet shell body, avoiding low discharge efficiency caused by gas deposition, and ensuring the effect of inert gas dilution and fire retardation.

In the first step reaction for producing 1,1,2-trifluoroethane (HFC-143) from 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) as part of the overall process for producing trans-A,2-difluoroethylene (HFO-1132E), several intermediates and / or byproducts are formed, some of which can be considered desirable and others of which can be considered undesirable. The overall reaction process and / or specific reaction conditions for producing 1,1,2-trifluoroethane (HFC-143) from 1,1,2-trichloro-1,2,2-trifluoroethane (CFC-113) can be selectively adjusted, such as with catalyst conditioning and / or with inert gas dilution of the reactants, to effectively convert the desired intermediates to the desired product 1,1,2-trifluoroethane (HFC-143) and / or to minimize the formation of undesirable byproducts.

The utility model discloses a hydrogen-nitrogen mixed gas control device, relates to hydrogen-nitrogen mixed gas control device technical field, including mixing box, the left side and right side of mixing box inner surface middle part are both fixedly equipped with the separator plate, the surface upper side of separator plate is equipped with the first air hole, and the surface lower side of right side separator plate is equipped with the second air hole, the second air hole is equipped with the second air hole. A piston is slidably attached to the middle of the partition plate, and a through cavity is formed in the surface of the piston. Compared with an existing common hydrogen-nitrogen mixed gas control device, the hydrogen-nitrogen mixed gas control device has the advantages that hydrogen can be injected only when nitrogen is injected firstly, the situation that reducing gas is not diluted by inert gas and enters an equipment end can be avoided, danger is greatly prevented, and meanwhile, when the nitrogen supply amount is insufficient and the pressure borne by the piston is reduced, the nitrogen can be injected into the equipment end. And under the action of the telescopic spring, the piston is gradually pushed downwards, so that the air hole I and the air hole II are blocked, a hydrogen inlet path is cut off and blocked, automatic cut-off is realized, and effective protection measures are taken.

The invention provides a novel process route for preparing perfluorohexane (C6F14), and the preparation method comprises the following steps: diluting fluorine gas with inert gas to obtain first mixed gas, and mixing hexafluoropropylene dimer (C6F12) with perfluorinated liquid to obtain first mixed liquid; the first mixed gas and the first mixed solution are treated through a microchannel reactor and then transferred into a reaction kettle, a product in the reaction kettle is collected, the product is separated, and the crude perfluorohexane product is obtained. The problems that in the prior art, the C6F14 preparation process is complex, and the conversion rate is low are solved. On the other hand, the invention discloses a purification method for obtaining a high-purity C6F14 finished product. The conversion rate and the purity of the perfluorohexane obtained by the scheme of the invention are obviously improved.

The invention relates to the technical field of electric appliance cabinets, and discloses an outdoor protection type electric appliance cabinet applied to an electric power system, which comprises an electric appliance cabinet main body, a bottom box fixedly arranged at the bottom of the electric appliance cabinet main body, and a plurality of gas tanks arranged in the bottom box, a gas conveying pipe is jointly connected between the gas tanks and the gas spraying pipes, a sealing assembly is arranged on the inner wall, located at the ventilation opening, of the electric appliance cabinet body, driving mechanisms are arranged at the two ends of one gas spraying pipe, and the driving mechanisms are used for driving the partition plates to rotate so that the ventilation holes can be sealed. When the gas spraying pipe sprays inert gas into the cabinet body, the connecting rod is driven by gas pressure power to ascend to limit the partition plate, so that the partition plate rotates downwards to block the ventilation opening, the ventilation hole is closed, oxygen in the cabinet body is diluted by the inert gas until the oxygen cannot be combusted, and the fire extinguishing efficiency and reliability are remarkably improved.

The invention discloses a fireproof glass fiber composite material and a preparation method thereof.Modified filler and caprolactam are mixed, under the action of deionized water, polycaprolactam chain segments are formed on the surface of the modified filler, and the fireproof glass fiber composite material is prepared. An organophosphorus structure in the material is heated and decomposed to generate strong dehydrating agents such as polymetaphosphoric acid, dehydration and carbonization of the surface of a high polymer material are promoted, a compact carbon layer is formed, meanwhile, organic silicon chain segments and nitrogen are doped, organic silicon can form a silicon dioxide inorganic layer at a high temperature, and the thermal stability of the carbon layer is enhanced; nH, N and other inert gases can be generated through doping of the nitrogen element, the concentration of oxygen and combustible gas is diluted, flame propagation is inhibited, the glass fiber serves as a physical framework, a carbon layer structure can be prepared, carbon layer breakage is delayed, then the stability of the carbon layer is guaranteed, molten drops are reduced, and the fireproof effect of the composite material is improved.

The invention discloses a preparation method of perfluorobutanesulfonyl fluoride, which comprises the following steps: introducing fluorine gas and inert gas into a reaction container, and adding butanesulfonyl chloride into the reaction container; butyl sulfonyl chloride and fluorine gas are subjected to a fluorination reaction under the condition of inert gas dilution, the reaction temperature is-20 DEG C to 80 DEG C, the reaction pressure is normal pressure, the reaction time is 2-14 hours, perfluorobutyl sulfonyl fluoride is generated, and hydrogen fluoride gas generated in the fluorination reaction is absorbed. According to the invention, fluorine gas can be diluted by adding inert gas, so that the reaction rate is controlled.

The utility model relates to the technical field of chemical production, in particular to a flammable gas pipeline flange leakage point online inert gas dilution device which comprises a flammable gas pipeline, two flange plates are arranged at the joint of the flammable gas pipeline, and the leakage point connected with the two flange plates is sealed through an upper shell and a lower shell which are of an arc-shaped structure. Gas conveying pipes of arc-shaped structures are installed in the upper shell and the lower shell, a plurality of gas outlet holes are formed in the connecting positions, facing the flange plate, of the gas conveying pipes in the circumferential direction, an inert gas inlet pipeline is arranged on one side of the flange plate, and the inert gas inlet pipeline is connected with the gas conveying pipes through gas pipes; the detection chamber can accurately detect whether combustible gas leaks at the joint of the two flange plates through the combustible gas detector, and the controller controls the opening of the first electromagnetic valve and the second electromagnetic valve, so that inert gas is injected to the joint of the flange plates, the concentration of the combustible gas leaked at the joint is diluted, and the leakage of the combustible gas at the joint is reduced. Combustible gas is effectively prevented from being gathered, and fire disasters are reduced.

This invention relates to the field of intelligent construction and safety protection technology for highway precast beam yards, and provides an intelligent production control system and method for highway precast beam yards. The system includes: an image data acquisition module, used to acquire historical cleaning records of target templates during the precast beam yard production process, and extract the initial target image of the target template after the last cleaning; and to acquire the operation data of the localized trapping hood, including the moving speed of the localized trapping hood along the target template, and the current initial grinding image captured by a first camera deployed in the imaging chamber. It can predict the proportion of combustible dust in advance based on the estimated volume of old oil film and residual slurry, and can proactively trigger inert gas dilution and explosion-proof operation modes before the dust enters the dust removal system, significantly improving the dust explosion risk prevention and control capabilities.