773 results about "Hydrogen content" patented technology

The present invention relates to a hydrogen sulfide content detection device, and in particular to a hydrogen sulfide content detection device inside a biogas tank. Provided is a hydrogen sulfide content detection device inside a biogas tank that can be easily moved and has accurate detection results. A hydrogen sulfide content detection device inside a biogas tank includes a mounting block, rollers, a bracket, a detector, a pipeline, etc.; rollers are rotatably provided on the front and rear sides of the left and right sides of the lower part of the mounting block, a bracket is provided on the top of the mounting block, a detector is provided on the upper part of the bracket, and pipelines are connected to the left and right sides of the upper part of the detector, and the upper part of the pipeline passes through the top of the bracket. After the straight pipe moves downward, it enters the biogas tank, thereby extracting the gas inside the biogas tank for the detector to detect the hydrogen sulfide content, so that the detection result is more accurate. At the same time, because the device is easy to move, it is convenient for the staff to detect other biogas tanks in turn.

The purpose of the present invention is to provide: a steel material which is suitable as a steel structure used in a hydrogen gas environment, has excellent hydrogen absorption resistance in a hydrogen gas environment, and has excellent hydrogen embrittlement resistance; and a method for producing same.　The steel material has a specific component composition, wherein the amount of saturated hydrogen that has entered in a hydrogen gas environment at a hydrogen gas pressure of 40 MPa is less than a predetermined value. The predetermined value is 0.8 ppm by mass when the tensile strength TS of the steel material is less than 500 MPa, and is a hydrogen amount CH (ppm by mass) calculated from formula (1) when the tensile strength TS of the steel material is 500 MPa or more. (1): CH (ppm by mass) = 5.4637e-0.004 × TS (MPa) In formula (1), TS (MPa) is the tensile strength of the steel material.

The invention provides an acoustic coalescence elimination method for hydrogen bubbles in molten aluminum, and belongs to the technical field of molten aluminum bubble elimination. According to the method, sound field collaborative focusing is achieved by arranging a phase control array transducer set in a molten aluminum smelting furnace, primary gathered sound waves and efficient coalescence sound waves are applied in stages according to bubble size evolution in a double-frequency scanning mode, and the hydrogen bubbles in the molten aluminum are eliminated. A target frequency is dynamically adjusted in combination with a bubble resonance frequency optimization model to match the inherent frequency of a bubble, a sound-bubble coupling dynamic tracking system is used for monitoring bubble evolution triggering stage switching in real time, and a sound field focus point dynamically scans and covers a three-dimensional space area through phase delay control. A delay detection method is adopted to eliminate cavitation bubble interference and accurately measure the hydrogen content, sound intensity and frequency parameters are optimized according to a sound field parameter self-adaptive regulation and control model, and the technical problem that hydrogen bubbles in a molten aluminum deep area are difficult to be effectively driven by sound waves and cannot be fully coalesced and eliminated is solved.

A seamless flux-cored wire for 10CrNiCu steel for ships, applied to welding of continuous casting 907A steel for a main hull and composed of a low-carbon steel sheath and a flux core. The diameter of the wire is 1.0-1.4 mm; the filling rate of flux-cored powder is 14%-16%; measured as the mass percentage of the flux-cored wire, the flux core contains rutile, aluminum oxide, ferroboron, zircon sand, quartz, bismuth oxide, potassium titanate, sodium fluoride, electrolytic manganese, ferrotitanium, magnesium powder, manganese-silicon alloy, nickel powder, metal chromium, copper powder, and iron powder. The seamless flux-cored wire for 10CrNiCu steel for ships has the advantages of good welding performance, stable mechanical properties, good crack resistance, low diffusion hydrogen content, high moisture absorption resistance, excellent rust resistance, and the like. Also provided is a method for manufacturing the seamless flux-cored wire for 10CrNiCu steel for ships

The invention discloses a solid hydrogen storage system capacity state estimation method. The method comprises the following steps of: firstly, simplifying a high-dimensional numerical calculation model into a lumped parameter model according to a chemical chemistry kinetic equation of solid hydrogen storage / desorption, and then carrying out linearization processing to obtain a state space equation and a linearization model of a solid hydrogen storage system; then designing extended Kalman filtering for monitoring the state of the solid-state hydrogen storage system, estimating the state of the solid-state hydrogen storage system at the future moment by using an extended Kalman filtering algorithm, and accordingly outputting the state of the hydrogen content SOC of the solid-state hydrogen storage system; and finally, predicting and updating the state of the solid-state hydrogen storage system through loop iteration, and adjusting the SOC estimated value of the solid-state hydrogen storage system in real time. According to the method, the phenomenon of error accumulation in hydrogen flow integration can be avoided, the SOC estimation precision is improved, meanwhile, the hydrogen content state of the system is estimated in real time under the dynamic working condition, dynamic control over system operation is guided, and errors caused by measurement noise and model uncertainty are reduced.

The invention discloses an alkaline electrolysis water hydrogen production system and method capable of deeply reducing the hydrogen content in oxygen in multiple ways, a hydrogen side flash tank is arranged in the alkaline electrolysis water hydrogen production system, and dissolved hydrogen deep removal is carried out on hydrogen side alkali liquor passing through a gas-liquid separator through the hydrogen side flash tank; a mixed alkali liquor flash tank is arranged in an alkaline electrolysis water hydrogen production system, and deep removal of dissolved oxygen and dissolved hydrogen is carried out on mixed alkali liquor through the mixed alkali liquor flash tank; a hydrogen side pressure adjusting part capable of adjusting the pressure of a cathode chamber is arranged in a hydrogen side gas-liquid separator system, and an oxygen side pressure adjusting part capable of adjusting the pressure of an anode chamber is arranged in an oxygen side gas-liquid separation system, so that the pressure of the anode chamber of the alkaline electrolytic cell is higher than that of the cathode chamber, and the amount of hydrogen entering the anode chamber from the cathode chamber through a diaphragm is reduced; the concentration of hydrogen in oxygen in the water electrolysis hydrogen production system is reduced, and the safety of the system is improved.

The present invention relates to a membrane electrode for reducing the hydrogen content in oxygen of a PEM water electrolyzer and a preparation method thereof, by simply adding an organic silicone resin solution in the cathode catalyst slurry preparation process, changing the mass transfer and transfer from the catalyst layer to the porous transmission layer after hydrogen is generated in the test process, reducing the hydrogen flux of hydrogen permeating from the cathode to the anode, and thus reducing the hydrogen content in oxygen. The present invention has the advantages of low preparation cost, simple process and easy operation, and excellent performance.

The invention discloses a hydrogen embrittlement-resistant welding wire for tailor welding of ultrahigh-strength aluminum-silicon coating hot-formed steel and a welding method, and belongs to the technical field of metal materials. 5.0%-7.0% of Ni; 0.3%-0.6% of Mo; 0.08% to 0.12% of Nb; mo, Nb and C react to form Mo2C / NbC nanophase fixed free hydrogen; 0.05%-0.1% of V: carrying out a reaction to form VC nanophase fixed free hydrogen; 0.5% to 0.8% of La; 0.3%-0.5% of Ce; 0.1%-0.5% of Ti; according to the invention, hydrogen atoms diffused in the welding process can be captured, the hydrogen content in a welding seam is obviously reduced, and the diffusible hydrogen amount is reduced by more than 40% under the hydrogen capturing effect of retained austenite, so that the hydrogen-induced crack sensitivity is reduced by 70%.

A process for the hydrogenation of carbonyl compounds consisting of the following steps: (a) providing hydrogen with a molar share of deuterium ≤ 100 ppm, based on the total hydrogen content, by electrolysis of water using electrical power generated at least in part from non-fossil energy, (b) hydrogenating a carbonyl compound using the hydrogen provided in step (a) to form the corresponding hydrogenation product, wherein at least one carbonyl group of the carbonyl compound is hydrogenated.

The invention provides a method, a system and equipment for optimizing and regulating operating parameters of a hydrogen production system and a medium. The method comprises the following steps: acquiring current, operating pressure, temperature and alkali liquor flow of the hydrogen production system under various different working conditions; based on the current, the operation pressure and the temperature under various working conditions, the electrolysis efficiency of the hydrogen production system under the corresponding working conditions is determined; based on the operation pressure and the alkali liquor flow under various working conditions, determining the hydrogen content in oxygen of the hydrogen production system under the corresponding working conditions; and aiming at the temperature and the corresponding current under each working condition, maximizing the electrolytic efficiency as an optimization target, and carrying out constraint optimization on the operating pressure and the alkali liquor flow under the constraint condition that the hydrogen content in oxygen is smaller than or equal to a preset safety threshold value, so as to obtain the target operating pressure and the target alkali liquor flow under the corresponding current and temperature conditions. According to the method, the electrolysis efficiency can be maximized under the condition of ensuring that the hydrogen content in oxygen meets the safety threshold value.

The invention discloses an intelligent preparation method of a high-strength, high-toughness and corrosion-resistant green aluminum frame, and high-value utilization of secondary aluminum is realized through a microalloying component design and a full-process automatic process. The process comprises the following steps: S1, smelting and casting: controlling alloy components (Si is 0.70-0.80%, Mg is 0.60-0.70% and the like, and the tolerance of Fe is widened to be less than or equal to 0.25%), and accurately controlling the hydrogen content (H is less than or equal to 0.17 cm / 100g); s2, homogenizing treatment: preheating (5 DEG C / min to 300 DEG C) in a multi-section homogenizing furnace, keeping constant temperature (560 + / -10 DEG C * 8 hours), and performing composite cooling to eliminate structure segregation; s3, extrusion treatment: optimizing extrusion parameters (the on-machine temperature is 460-480 DEG C, and the speed is greater than or equal to 15m / min); s6, aging treatment: controlling the temperature (the precision is + / -2 DEG C) by a tunnel type continuous aging furnace in combination with a PID algorithm; and S7, oxidation closed-loop treatment: automatically generating a 8-28 [mu] m oxidation film. The method has the advantages that the recycling rate of the secondary aluminum is larger than or equal to 60%, the yield strength is larger than or equal to 280 MPa, the salt spray corrosion resistance is larger than or equal to 1000 hours, the energy consumption is reduced by 24.4%, and the surface defect rate is smaller than or equal to 1%.

A process for the production of hydrogen is described comprising the steps of: (i) reforming a gaseous mixture comprising a hydrocarbon and steam having a steam to carbon ratio in the range of 0.4:1 to 1.8:1, to in a reforming unit comprising an autothermal reformer to produce a reformed gas mixture, (ii) subjecting the reformed gas mixture to an isothermal water-gas shift reaction in an isothermal water-gas shift reactor using water as a heat exchange medium, thereby increasing the hydrogen content of the reformed gas mixture and producing a hydrogen-enriched reformed gas while raising steam, cooling at least some of the hydrogen-enriched reformed gas and separating condensed water therefrom to provide a de-watered hydrogen-enriched reformed gas, (iv) subjecting at least some of the de-watered hydrogen-enriched reformed gas to carbon dioxide separation by performing a reactive amine wash on the hydrogen-enriched reformed gas in a carbon dioxide separation unit to recover carbon dioxide gas and crude hydrogen gas, and (v) subjecting at least some of the crude hydrogen gas to purification in a hydrogen purification unit to produce a purified hydrogen gas and a tail gas, wherein a portion of the tail gas is recycled to the process.

A process for the production of hydrogen is described comprising the steps of: (i) subjecting a gaseous mixture comprising a hydrocarbon and steam to steam reforming in a reforming unit comprising an autothermal reformer to generate a reformed gas mixture; (ii) increasing the hydrogen content of the reformed gas mixture by subjecting it to one or more water-gas shift stages in a water-gas shift unit to provide a hydrogen-enriched reformed gas; (iii) passing the hydrogen-enriched reformed gas and an oxygen-rich gas to an oxidation unit containing an oxidation catalyst that converts carbon monoxide present in the hydrogen-enriched reformed gas to carbon dioxide, to form a carbon dioxide-enriched gas mixture; and (iv) passing the carbon dioxide-enriched gas mixture to a product separation unit to provide a hydrogen gas stream, a carbon dioxide gas stream and a by-product gas stream, wherein at least a portion of the by-product gas stream is compressed and recycled to one or more of the reforming unit, the water-gas-shift unit, the oxidation unit, and the product separation unit.

The invention discloses a liquid organic hydrogen storage material and application thereof, and belongs to the technical field of liquid hydrogen storage. The liquid organic hydrogen storage material is an organic compound with a diol structure, the organic compound with the diol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine, the liquid organic hydrogen storage material is low in melting point, high in boiling point, safe and low in toxicity, hydrogen is generated through liquid-phase dehydrogenation lactonization, the available hydrogen content is about 3.8%, and the 1, 5-pentanediol structure is one of 1, 5-pentanediol, diethylene glycol and diethanol amine. The 1, 5-pentanediol can be prepared from a biomass platform compound furfural through hydrogenation and hydrogenolysis, and the source is rich; the diethylene glycol and the diethanol ammonia are bulk chemical products, easy to obtain and low in price, and the liquid organic hydrogen storage material has high industrial application value.

The invention discloses an alkaline water electrolysis hydrogen production operation boundary evaluation method considering hydrogen content constraint in oxygen, and relates to the technical field of water electrolysis hydrogen production. The method comprises the following steps: analyzing a generation mechanism of gas crossing in an alkaline water electrolytic cell, according to steady-state and dynamic models of HTO gas crossing caused by diaphragm permeation and alkaline liquor mixed circulation in the electrolytic cell, and based on structural parameters represented by the volume of a gas-liquid separator and operating parameters such as working pressure, temperature, electrolyte circulation flow and the like of the electrolytic cell; the method comprises the following steps: analyzing the influence of different parameters on HTO impurity accumulation, quantifying the sensitivity coefficient of each parameter on HTO accumulation, predicting an HTO accumulation trajectory through a model, determining the safe operation range of different parameters, determining the safe operation boundary of alkaline water electrolysis hydrogen production, and constructing a parameter priority regulation and control method based on sensitivity ranking under a given operation condition. And pressure-flow-temperature parameters are determined for cooperative adjustment under the dynamic working condition, and the HTO concentration overrun risk is inhibited in real time.

The embodiment of the invention discloses a composite shielding plate and a preparation method thereof, and the composite shielding plate comprises a cladding which is provided with an accommodation space, and the accommodation space is in a vacuum state; the shielding material is arranged in the accommodating space; wherein the shielding material comprises a neutron moderation base material, and the cladding is made of a boron-containing metal material; or the shielding material comprises a neutron moderation base material and a neutron absorption base material, the cladding is made of a metal material, the neutron moderation base material comprises rare earth hydride, and the neutron absorption base material comprises boron-containing ceramic. The composite shielding plate provided by the embodiment of the invention not only comprises the neutron moderation base material which is high in hydrogen content and excellent in temperature resistance so as to effectively moderate fast neutrons, but also is combined with the neutron absorption base material containing boron atoms so as to efficiently absorb thermal neutrons, so that the complete neutron moderation-absorption integrated shielding performance of the composite shielding plate is realized; and stable shielding performance can be provided at the temperature of 300-1000 DEG C.

The invention provides a method and device for predicting biomass pyrolysis products, computer equipment and a storage medium, and belongs to the field of pyrolysis product prediction.The method comprises the steps that historical data of biomass to be predicted are obtained; determining a first prediction model and a second prediction model with minimum prediction error values in the plurality of models to be selected according to the historical data; obtaining a current characteristic parameter and a current pyrolysis parameter of the to-be-predicted biomass; inputting the current characteristic parameters into a first prediction model, and obtaining predicted carbon content, hydrogen content, nitrogen content and oxygen content through the first prediction model; and inputting the predicted carbon content, hydrogen content, nitrogen content and oxygen content and the current pyrolysis parameters into a second prediction model, and obtaining a pyrolysis product of the to-be-predicted biomass through the second model. The method can improve the prediction accuracy of the pyrolysis product.

The invention relates to a method for producing a coated metal substrate plate (10), wherein a metal substrate plate (1) is coated with an adhesion promoter layer (2) in a first surface region by means of an arc vapour deposition (Arc-PVD) method, at least one single layer of a tetrahedral amorphous carbon layer (3) of the ta-C:H type having at least 3 wt.% hydrogen is formed with a first layer thickness in the range from 10 to 500 nm on the adhesion promoter layer (2) by means of the arc vapour deposition (Arc-PVD) method, wherein a temperature of the metal substrate plate (1), of the adhesion promoter layer (2) and of the tetrahedral amorphous carbon layer (3) is maintained in the range from 100 to 180°C during coating. The invention also relates to a coated metal substrate plate (10) produced thereby and to an electrochemical cell (20) comprising at least one such metal substrate plate, and to a coating installation (200) for carrying out the method.

The invention discloses a laboratory adsorption gas calculation method based on isothermal adsorption-nuclear magnetic resonance combined measurement, and relates to the technical field of exploration geophysics. According to the invention, on the basis of isothermal adsorption-nuclear magnetic resonance combined measurement experiment, 23MHz nuclear magnetic resonance experiment is utilized; nuclear magnetic signal conversion of bound water-adsorbed state methane is carried out through nuclear magnetic resonance T2 spectrums of coal rocks with different water saturations and T2 spectrums measured through a coal rock isothermal adsorption-nuclear magnetic resonance combined measurement experiment to obtain the hydrogen content of the adsorbed state methane, then the amount of substance of the adsorbed state methane is obtained, and finally the volume of the adsorbed state methane is obtained. The method comprises the following steps: firstly, measuring and determining the content of bound water in the coal rock by adopting a 25mm sample tube and the current minimum nuclear magnetism callback interval, then carrying out bound water-adsorbed gas nuclear magnetism signal conversion on the sample tube used in an isothermal adsorption-nuclear magnetism combined measurement experiment to obtain the hydrogen content of the adsorbed gas, further obtaining the amount of substance of the adsorbed gas, and finally obtaining the volume of the adsorbed gas.

The application provides a crystallizer protection slag for casting high-hydrogen-content medium-carbon steel liquid steel and application thereof, wherein the chemical composition of the crystallizer protection slag has the following mass percentages: SiO2: 25-32%, CaO: 29-36%, Al2O3: 1-4%, MgO: 3-6%, Na2O: 7-12%, F: 6-10%, C 总 : 3-6%, MnO: 2-4%, Li2O: 0.5-1%, and the rest is other inevitable impurities. The crystallizer protection slag can significantly reduce the occurrence rate of crystallizer sticking alarm emergency speed reduction and the occurrence rate of leakage during continuous casting when used for casting high-hydrogen-content medium-carbon steel liquid steel. Thus, the high-hydrogen-content medium-carbon steel liquid steel can be directly subjected to continuous casting without additional dehydrogenation treatment, the production efficiency is improved, and the production cost is solved.

The invention belongs to the technical field of titanium welding wire preparation, and discloses a preparation method of a low-cost low-hydrogen titanium welding wire. The method comprises the following steps: preparing a titanium alloy wire rod; under the room temperature condition, multi-pass continuous cold drawing operation is conducted on the titanium alloy wire rod, a plurality of drawing dies are detachably installed on the same continuous drawing machine or a plurality of continuous drawing machines connected in series, so that a wire material continuously passes through the multiple drawing dies at a time to complete multi-pass deformation, and the wire rod is subjected to continuous cold drawing. The pass deformation of the multi-pass continuous cold drawing is designed to be a starting stage, a middle stage and a final stage, and the single-pass deformation of the starting stage and the single-pass deformation of the final stage are smaller than the single-pass deformation of the middle stage; in the middle stage process or after the middle stage process, on-line annealing treatment is carried out on the wire, and on-line annealing is carried out under argon protection; and the wire material subjected to online annealing treatment is subjected to polishing and lower breaking or close arrangement treatment, and a titanium alloy welding wire finished product is obtained. The titanium welding wire prepared through the method is low in hydrogen content, high in preparation efficiency and low in cost.

The invention provides an LF-RH duplex process calcium treatment method, and belongs to the technical field of steelmaking production in the ferrous metallurgy industry. The method comprises the following steps that after molten iron is pre-desulfurized, converter smelting, LF refining and RH refining are sequentially carried out, in the RH refining process, high-calcium wires are fed for calcification treatment, and the calcium treatment process is completed. Compared with the prior art, the LF-RH duplex process calcium treatment method provided by the invention adopts specific process steps and conditions to realize better overall interaction: by determining the optimal calcium treatment opportunity, the inclusion control level of the molten steel is improved, and clean production of the molten steel is realized. Experimental results show that calcium treatment is carried out in the RH procedure, the inclusion level in the molten steel is reduced, stable production of high-quality steel is achieved, under the condition that the hydrogen content is basically consistent, the effect of reducing the inclusion in the molten steel is good, and the cleanliness of the molten steel can be improved.

This invention provides a boronene-coated sodium-ion battery cathode material and its preparation method, wherein the general chemical formula of the cathode material is Na[Ni]. a Fe b Mn c O2@BL (0 < a < 1, 0 < b < 1, 0 < c < 1, a + b + c = 1). This cathode material is uniformly coated with borene, effectively improving its air stability. The preparation method first involves growing a monolayer of borene on a copper surface using chemical vapor deposition, then obtaining a borene film using a wet transfer process. Finally, the borene film is mixed with the cathode material, vacuum-sealed, and sintered in a muffle furnace, ensuring the borene film is firmly coated onto the cathode material surface. This technology fully utilizes the unique cage-like structure, good conductivity, and high hydrogen content of borene materials. Introducing a borene coating layer onto the cathode material surface not only enhances its air stability but also improves its cycle life, rate performance, and energy density.

The invention relates to a method for determining the hydrogen content in an exhaust tract (130) of a hydrogen internal combustion engine (100) and to a hydrogen internal combustion engine (100) that has combustion chambers (110) and an oxygen sensor (140), which is provided in the exhaust tract (130) of the hydrogen internal combustion engine (100) and is designed to generate an oxygen signal that is representative of the oxygen content in the exhaust gas of the hydrogen internal combustion engine (100). The method according to the invention has the steps of determining a specified operating mode of the hydrogen internal combustion engine (100) during which substantially no combustion processes of an air-hydrogen mixture take place within the combustion chambers (110); receiving an oxygen signal from the oxygen sensor (140) in the specified operating mode of the internal combustion engine (100); and determining the hydrogen content in the exhaust gas of the hydrogen internal combustion engine (100) at least partly on the basis of the oxygen signal received from the oxygen sensor (140).

The invention relates to the technical field of steelmaking, in particular to a method for controlling hydrogen content in a low alloy steel smelting process, which comprises the following steps: pre-desulfurizing molten iron until S is less than or equal to 0.01%; the converter tapping temperature is not lower than 1670 DEG C, high-carbon alloy is adopted for converter tapping to increase the carbon content, and a carburant is not added; before LF refining production, it is checked that an LF cover does not leak water, dry lime is contained in the LF, molten steel enters the LF and then is premixed, the LF is heated once, the heating time is shorter than 20 min, 2-7 kg / t of dry lime and 0.4-1.5 kg / t of slag melting agent are added in the heating process, and the temperature of the molten steel is increased to 10-15 DEG C higher than the carrying-out temperature; a carburant is added, the alloy is strongly stirred for 2-5 min, the adding amount of the carburant is smaller than or equal to 0.6 kg / t, the argon flow is larger than 60 m < 3 > / h during strong stirring, weak argon blowing is conducted for 5-10 min, and the argon flow is smaller than 30 m < 3 > / h during weak argon blowing. LF refining is adopted, the hydrogen content of the low-alloy steel is controlled without vacuum degassing treatment, and the steelmaking cost of the low-alloy steel is reduced.

The invention discloses a metal material hydrogen compatibility simulation test method based on hydrogen content. The method comprises the following steps: S1, sample preparation; s2, charging hydrogen in a high-pressure hydrogen environment; s3, diffusible hydrogen is measured; s4, preparing an electrochemical hydrogen charging solution; s5, carrying out hydrogen charging by using an electrochemical hydrogen charging solution; s6, storing the sample; s7, drawing a hydrogen concentration change curve; s8, electrogalvanizing process parameters are set; s9, performing hydrogen charging in a simulated high-pressure hydrogen environment; s10, the sample is galvanized; s11, carrying out a slow tensile test and a fracture toughness test on the sample; and S12, evaluating the high-pressure hydrogen embrittlement of the sample based on the results of the slow tensile test and the fracture toughness test. According to the method, the hydrogen embrittlement performance of the material under different hydrogen pressure environments can be obtained, and the influence of the influence factors on the high-pressure hydrogen embrittlement performance of the steel can be analyzed in combination with the process, alloy components and stress states of the steel.

An autothermal process of concentric bubbling fluid double bed for the production of syngas by gasification with biomass steam, in the presence of a granular material includes: continuous gasification under stationary bed condition of said granular material in bubbling fluidisation regime of biomass with water vapour with thermochemical transformation of the fuel into raw syngas and char, the raw syngas including heavy hydrocarbons in the steam state and any harmful compounds in traces, in a first reaction volume; combustion in bubbling fluidised bed with air of the char and of auxiliary fuel in a second reaction volume; the transfer velocity of the granular material between the first and second reaction volumes being such that the thermal difference does not exceed 20° C.; separation from the raw syngas by hot filters; and elimination of any harmful compounds in traces.

The invention provides a control method and device of an alkaline electrolyzed water system, an MPC controller optimizes hydrogen flow and auxiliary power supply power in real time through a prediction model in each control period to obtain an optimal control sequence of the current control period, and based on a first control parameter in the optimal control sequence, a second control parameter in the current control period is obtained; and cooperatively regulating the hydrogen-oxygen side pressure difference of the alkaline electrolyzed water system to a target value, and meanwhile, controlling the hydrogen concentration in oxygen of the alkaline electrolyzed water system within a safety threshold value. According to the scheme, the input is controlled based on rolling optimization of the multivariable dynamic prediction model, the dual targets of pressure difference stabilization and inhibition of the hydrogen content in oxygen are achieved, the technical problem that dynamic balance and the HTO risk are difficult to consider in traditional single parameter adjustment is solved, and the hydrogen production efficiency and safety are remarkably improved in the scene of wind and light fluctuation.

The invention discloses an organic silicon heat-conducting coating as well as a preparation method and application thereof. The high-temperature-resistant ceramic material is prepared from the following raw materials in parts by weight: 6-10 parts of first vinyl siloxane resin, 2-6 parts of second vinyl siloxane resin, 1-3 parts of hydrogen-containing silicone oil, 6-8 parts of fumed silica, 0.5-0.8 part of a platinum catalyst, 0.8-1.5 parts of a silane coupling agent, 12-25 parts of carbon nanotubes, 20-30 parts of boron nitride and 30-50 parts of aluminum nitride. Wherein the viscosity of the first vinyl siloxane resin is 300 to 800 cps / 25 DEG C; the viscosity of the second vinyl siloxane resin is 2000 to 5000 cps / 25 DEG C; the hydrogen content of the hydrogen-containing silicone oil is 8-12 mmol / g. A coating layer prepared from the organic silicon heat-conducting coating has excellent heat conductivity, adhesive force, boiling resistance and aging resistance, is easy to construct and has a wide application prospect.

The invention discloses a rolling manufacturing method of low-decarburization medium-chromium round steel for a caterpillar track link and a product of the rolling manufacturing method, and belongs to the technical field of alloy steel rolling. The method comprises the following steps: smelting molten steel, wherein the molten steel comprises the following components in percentage by mass: 0.28-0.34% of C, 0.15-0.35% of Si, 0.50-0.85% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 0.80-1.10% of Cr, less than or equal to 0.30% of Ni, 0.10-0.30% of Mo, less than or equal to 0.30% of Cu, 0.010-0.060% of Al and the balance of Fe and impurities; lF refining, RH vacuum degassing (the time is longer than or equal to 20 min, and the hydrogen content is smaller than or equal to 1.5 ppm), electromagnetic stirring continuous casting (the superheat degree is 15-25 DEG C), slow cooling (longer than or equal to 12 h), segmented heating (the total time is shorter than or equal to 200 min, and the residual oxygen content is lt, 3%), multi-stage high-pressure water descaling (the pressure before finish rolling is 30-35 MPa) and hot continuous rolling (the compression ratio is larger than or equal to 6) are conducted. The total decarburized layer depth of the obtained round steel is smaller than or equal to 0.30 mm, and the round steel has high hardenability, excellent mechanical property and low surface defect rate and is suitable for heavy-load components such as a hydraulic excavator caterpillar track link.