1508 results about "Hydrogen sulfide" patented technology

The invention relates to the technical field of equipment fault prediction, in particular to a coal mine equipment fault prediction system and method based on big data, and the method comprises the following steps: collecting the thickness of a biological membrane on the surface of equipment, synchronously collecting the vibration acceleration of the equipment and the environmental hydrogen sulfide concentration, and constructing a corrosion multi-mode data set; performing electrochemical noise separation on the corrosion multi-modal data set, and constructing a corrosion activity fingerprint spectrum; decoupling a coupling effect of mechanical vibration and microbial corrosion, and generating a corrosion-fatigue damage correlation map; and constructing a dual-channel life prediction model based on the corrosion-fatigue damage correlation map, and setting an early warning mechanism. Microbial corrosion characteristic current is accurately extracted through wavelet packet decomposition and wavelet entropy analysis, a corrosion-vibration heterogeneous graph is established by adopting a graph attention network, corrosion-induced structural vibration enhancement effect analysis is realized, and compared with a traditional prediction method based on a single signal, the method has the advantages that the method is simple and convenient to operate. And the problems of limited local corrosion influence range, unstable vibration response and the like are effectively solved.

A process system and process method for treating hydrogen sulfide-containing acid gas. The process system comprises a sulfur recovery unit, a tail gas treatment unit having an acid gas concentration function, and a flue gas alkaline scrubbing unit. The method comprises: subjecting sulfur-containing tail gas to concentration treatment by means of an absorption column (1) of the tail gas treatment unit, and then introducing same into the sulfur recovery unit to undergo a Claus reaction for separation, so as to obtain sulfur and sulfur recovery tail gas; introducing the sulfur recovery tail gas into the tail gas treatment unit, successively carrying out combustion and hydrotreating, and introducing the obtained gas into the absorption column (1) of the tail gas treatment unit; and in the tail gas treatment unit, introducing gas absorbed by the absorption column (1) into the flue gas alkaline scrubbing unit, and successively carrying out incineration and alkaline scrubbing, so as to discharge desulfurized gas. The content of SO2 in the tail gas treated by the process system is ≤50 mg / Nm3, and the requirements for full-period standard reaching of sulfur dioxide emission of tail gas during startup, shutdown and normal operations can be satisfied.

The invention discloses a hydrogen sulfide leakage abnormity monitoring method and system, and relates to the technical field of gas monitoring. A hydrogen sulfide leakage abnormity monitoring system comprises a data monitoring module, an airflow correction module, a twinborn inversion module, an association judgment module, a leakage confirmation module, a linkage control module and a monitoring updating module. According to the invention, the gas flow field correction is carried out on the hydrogen sulfide concentration by constructing the gas flow vector model and calculating the gas diffusion disturbance coefficient, so that the monitoring result is closer to the real gas distribution, and the space precision and reliability of leakage detection are improved; by establishing a double-physical-field digital twinborn model of a battery thermal field and an airflow field, corrected concentration data is introduced into a coupling domain for numerical evolution, and space inversion positioning and diffusion path prediction of hydrogen sulfide concentration abnormity are realized.

The invention provides a gas extraction multi-parameter monitoring method and system based on edge calculation, and relates to the technical field of coal mine gas extraction. The method comprises the following steps: arranging multi-parameter sensor nodes in drill holes, pipelines and gas gathering stations, and accessing an edge calculation unit; performing time synchronization, zero drift correction, outlier elimination and normalization on the data of the gas concentration, the negative pressure, the flow, the temperature, the humidity and the hydrogen sulfide concentration to generate feature vectors; calling a lightweight neural network model for reasoning, and outputting an extraction efficiency score and a leakage risk degree; when the risk degree exceeds the limit, an acousto-optic alarm is triggered and a speed reduction instruction is issued; when the efficiency is insufficient, the negative pressure is adjusted; compressing and encrypting the result, and reporting the result to a cloud platform through a wireless network at regular time; and the cloud performs model incremental training based on historical data and feedback, and issues an update model through hot replacement. According to the invention, local intelligent analysis, rapid early warning and dynamic adaptive optimization are realized.

The invention discloses a gas sensing material based on Ag / Pd-LaFeO3 and application of the gas sensing material in detection of hydrogen sulfide gas in municipal sewage, and relates to the technical field of gas sensing materials. The chemical formula of the gas sensing material based on Ag / Pd-LaFeO3 is X wt% of Ag-Y wt% of Pd-LaFeO3, wherein 0 lt; x < = 5, 0lt; y < = 5. According to the invention, on the basis of LaFeO3, the humidity interference resistance of the gas sensing material based on Ag / Pd-LaFeO3 can be improved through double noble metal surface modification of Ag and Pd. In addition, through double noble metal doping of Ag and Pd, the response sensitivity and selectivity of the prepared gas-sensitive material to H2S gas can be improved, and the working temperature of the gas-sensitive material is reduced. Specifically, at the working temperature of 110 DEG C, the response value of the prepared double noble metal modified LaFeO3 to 1ppm H2S gas is 46.16.

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 invention discloses a hydrogen sulfide pretreatment system and relates to the technical field of waste gas treatment. Comprising a tower body, the tower body is sequentially provided with a liquid outlet, a gas inlet and a gas outlet from bottom to top, and the tower body is fixedly connected with a liquid circulation system communicated with the liquid outlet; the cap-shaped part is fixedly connected to the tower body, a liquid storage push rod is installed on the cap-shaped part, a sealing plate is connected into the cap-shaped part in a sealed and sliding mode, and the sealing plate and the cap-shaped part jointly form a liquid storage cavity communicated with the liquid circulation system. Part of spraying liquid is temporarily stored in the liquid storage cavity, the spraying liquid in the liquid storage cavity is sprayed out when the liquid-gas ratio is imbalanced due to the fact that the valves, the pipelines and the liquid conveying pump go wrong, the flow of the spraying liquid in the tower body is adjusted, the stable liquid-gas ratio is maintained, and then the absorption and dissolution efficiency of the spraying liquid to hydrogen sulfide in waste gas is kept; and meanwhile, shutdown maintenance is not needed, so that economic loss caused by shutdown of a production line is avoided.

The invention belongs to the technical field of lithium battery materials, and particularly relates to a preparation method of high-purity lithium sulfide. Comprising the following steps: putting lithium hydroxide and pure water into a reaction kettle, replacing air in the reaction kettle with nitrogen, starting the reaction kettle, and stirring and heating; introducing quantitative hydrogen sulfide gas from the bottom of the reaction kettle, and circulating the gas in the reaction kettle between liquid in the reaction kettle and a gas space through a gas circulating pump; and after the temperature of the reaction liquid in the kettle is reduced to 20-30 DEG C, filtering in a nitrogen atmosphere, washing the residual solid with quantitative ammonia water, transferring the filtered solid into a drying box, and purging and drying with nitrogen until no water exists, thereby obtaining the high-purity lithium sulfide. In the solvent method, water is used for replacing an organic solvent for reaction, the problems of organic solvent separation and recovery, hazardous waste treatment and the like are avoided, the cost is reduced, and the method is environment-friendly.

The invention provides a preparation method of high-purity and low-cost lithium sulfide and lithium sulfide prepared by the preparation method, and relates to the field of lithium sulfide materials. According to the preparation method of the high-purity and low-cost lithium sulfide, on the basis of the characteristics of high-efficiency heat and mass transfer and uniform dispersion of a fluidized bed fluidization technology, lithium source small liquid drops are coated on the surface of a fluidized precursor, then hydrogen sulfide gas is introduced, the lithium source melt liquid drops or the precursor coated with the lithium source solution liquid drops are subjected to a contact reaction with the hydrogen sulfide gas, and the high-purity and low-cost lithium sulfide is obtained. The lithium sulfide is prepared. According to the preparation method of the high-purity and low-cost lithium sulfide, the problems of more reaction byproducts, low hydrogen sulfide gas utilization rate, easiness in product agglomeration and non-uniform particle size distribution in the existing lithium sulfide preparation process can be effectively solved, the reaction temperature is further reduced, and the production safety is improved; and the problem that the product purity and quality are influenced by water vapor in the preparation process is effectively avoided, and stable and efficient lithium sulfide production is realized.

The invention relates to the field of gas sensors, and discloses a hydrogen sulfide gas sensor and a method for detecting the concentration of hydrogen sulfide in gas. The hydrogen sulfide gas sensor comprises a substrate and a gas sensitive material, a cavity is formed in the substrate, the gas-sensitive material is located above the cavity, and the two ends of the gas-sensitive material are connected with the gold electrodes on the substrate; the gas sensitive material comprises graphene fiber and metal oxide loaded on the graphene fiber. The metal oxide is selected from one or more than two of oxides of Zn, Cd, Cu, Ni, Pd, Pt, Co, Ir, Fe, Mn, Cr, Mo, W, V, Ti, Mg and Al; the specific surface area of the gas sensitive material is 80-150m < 2 > / g; the loading capacity of the metal oxide is 0.05 to 5 weight percent. The hydrogen sulfide gas sensor can be self-heated, has high sensitivity to hydrogen sulfide gas, and is suitable for being applied to the field of gas monitoring.

The invention provides paracoccus pantotrophus, a deodorant composed of the paracoccus pantotrophus and application of the deodorant, and belongs to the technical field of microbial agents. According to the invention, a paracoccus pantotrophus strain is screened from biogas residues of a pig farm, is named as Paracoccus pantotrophus SZZ1 and is preserved in the China Center for Type Culture Collection, the preservation address is Wuhan University, Wuhan, China, and the biological preservation number is CCTCC M20242509. The SZZ1 strain is used for animal manure fermentation, and results show that the microbial inoculum can effectively reduce odor generated during manure fermentation, and especially has a significant inhibition effect on release of hydrogen sulfide. Therefore, the method not only enriches the types of existing deodorization strains, but also has an excellent removal effect on hydrogen sulfide and a stable and lasting deodorization effect, and is suitable for popularization and application.

The invention provides a sulfur-tolerant shift pre-transformation protective agent as well as a preparation method and application thereof, and relates to the technical field of sulfur-tolerant shift. The magnesium aluminate spinel, the nickel aluminate spinel and the activated carbon are used as composite carriers, the cobalt is used as a main conversion active component, the detoxification carriers have good adsorption and removal effects on arsenic compounds and small-particle impurities, the arsenic capacity is large and is not influenced by the content of hydrogen sulfide, the conversion activity of the protective agent is moderate, the temperature rise of a bed layer is controllable, and the conditions of large temperature rise and overtemperature are avoided; the influence of a water-carrying working condition on the catalyst is greatly avoided, and the catalyst is suitable for a pre-shift furnace and a detoxification tank in a sulfur-tolerant shift process.

The invention relates to the technical field of gas detection, in particular to response type aerogel and application thereof. The response type aerogel is prepared according to the following steps: mixing and dissolving a metal organic framework material and lead acetate to obtain an adsorption and response integrated probe; mixing silk fibroin, polyethylene glycol diacrylate and the adsorption-response integrated probe, and performing light curing reaction under the action of a photo-crosslinking agent to obtain the adsorption-response integrated probe. Wherein a double-grid aerogel substrate generated by reaction of silk fibroin and polyethylene glycol diacrylate can adsorb water molecules in environments with different humidity to wet the substrate, and a saturated microscopic water environment is provided for colorimetric reaction on the surface of a pore wall, so that interference of environmental humidity on response is effectively relieved. The quantitative method established by using the response type aerogel can be used for high-sensitivity quantitative detection of hydrogen sulfide in livestock and poultry farms.

The invention discloses a gas-sensitive material based on double noble metal doped holmium iron oxide and application of the gas-sensitive material to detection of hydrogen sulfide in a sulfur-containing ore body exploration environment, and relates to the technical field of gas-sensitive materials. HoFeO3 is used as a substrate material, and two elements of Au and Pt are used for doping modification of the HoFeO3 to prepare the gas sensitive material based on double noble metal doped holmium iron oxide. Au and Pt are combined to perform doping modification on HoFeO3, a synergistic effect is achieved on improving the temperature stability of the gas-sensitive material, the sensitivity of the gas-sensitive material in a high-humidity environment can be improved, in addition, due to the synergistic catalysis effect of Au and Pt, an energy barrier of H2S adsorption reaction can be remarkably reduced, surface electron transfer and reaction activity are promoted, and the sensitivity of the gas-sensitive material in a high-humidity environment is improved. Therefore, the working temperature is reduced, the response value is improved, and the method is suitable for detecting hydrogen sulfide gas in a sulfur ore body exploration environment.

The invention discloses a sulfur-oxidizing bacterium screening and enriching nutrient solution, a sulfur-oxidizing bacterium enriching method and a deodorizing method. The sulfur-oxidizing bacterium screening and enriching nutrient solution comprises 1.0 g.L <-1 > of K2HPO4, 0.5 g.L <-1 > of NaHCO3, 0.05 g.L <-1 > of NH4Cl, 0.225 g.L <-1 > of Na2S. 9H2O and 0.001 g.L <-1 > of trace elements, wherein the trace elements comprise 0.5 g.L <-1 > of EDTA (Ethylene Diamine Tetraacetic Acid), 0.01 g.L <-1 > of (NH4) 6Mo7O24. 4H2O, 0.04 g.L <-1 > of ZnSO4. 7H2O, 0.03 g.L <-1 > of MnCl2. 7H2O, 0.02 g.L <-1 > of CuSO4. 5H2O The deodorization performance of the municipal sewage treatment plant is improved through synchronous desulfurization and deamination of the acidophilic sulfur-oxidizing bacteria, and compared with a traditional deodorization process, the synchronous desulfurization and deamination process can enrich high-abundance sulfur-oxidizing bacteria in a short time and shows higher ammonia gas and hydrogen sulfide removal capacity.

The present invention relates to a process for cleanly and efficiently removing arsenic from waste acid and its comprehensive utilization, wherein a certain amount of FeS is added under suitable conditions to precipitate arsenic in the waste acid in the form of arsenic sulfide. The present invention comprehensively utilizes sulfuric acid therein, and the whole process does not generate hydrogen sulfide gas, does not adjust the pH value, and does not discharge wastewater, generate worthless hazardous waste, or generate waste gas such as hydrogen sulfide in the whole production process, so that no secondary environmental pollution will be caused.

The invention provides a graphene-based hydrogen sulfide gas sensor and a preparation method thereof, and relates to the technical field of gas sensors. The preparation method of the graphene-based hydrogen sulfide gas sensor comprises the following steps: soaking the wood substrate in a mixed metal salt solution containing a water-soluble silver salt and a water-soluble transition metal salt; irradiating the soaked wood substrate by using a laser beam at room temperature under the condition of no shielding gas, so that lignin and cellulose in the wood substrate are cracked and reconstructed to form graphene; meanwhile, the mixed metal salt immersed in the wood substrate is decomposed to form bimetallic oxide nanoparticles including silver oxide nanoparticles and transition metal oxide nanoparticles, and the bimetallic oxide nanoparticles are dispersed on the surface of each layer of graphene to obtain a sensitive layer; and coating conductive materials on the wooden substrate and on the two sides of the sensitive layer to form a connecting electrode in contact with the sensitive layer, thereby obtaining the graphene-based hydrogen sulfide gas sensor.

The invention belongs to the field of solid-state battery manufacturing, and particularly relates to a low-cost method for synthesizing high-purity lithium sulfide, which comprises the steps of synthesizing high-purity lithium oxide and synthesizing high-purity lithium sulfide. The process for synthesizing Li2O is unique, lithium salt can be chemically reacted into lithium oxide in a plasma environment, and the method has the advantages of high energy efficiency, short process time, good process controllability, high conversion rate, high product purity and the like. According to the method, self-made low-cost high-purity lithium oxide is adopted as a raw material and continuously reacts with hydrogen sulfide gas at a proper temperature (200-400 DEG C) for 20-60 minutes, so that high-purity lithium sulfide can be obtained. According to the process, the synthesis cost is greatly reduced, so that the large-scale commercial production of the sulfide solid electrolyte becomes possible.

The invention discloses a water quality monitoring device and a monitoring method thereof, belongs to the technical field of water quality monitoring, and solves the problems that trace hydrogen sulfide generated by sulfate reducing bacteria in a deposited layer at the bottom of a water tank which is not cleaned for a long time in a low-oxygen environment reacts with a platinum membrane electrode of a residual chlorine sensor to generate a platinum sulfide covering layer; and the electrode reading is continuously virtually high and drifts slowly. Comprising an optical transmitting module, an optical receiving module, a spectrum separation module, a signal conditioning module, a lock-in amplification module, a spectrum feature extraction module and a hydrogen sulfide recognition engine. Residual chlorine is monitored in a non-contact mode, deep ultraviolet pulse light is emitted to penetrate through a water body, a reflection spectrum is received, second derivative spectral characteristics are extracted through multichannel signal processing, and multivariable regression compensation is executed to calculate a real residual chlorine value after hydrogen sulfide interference characteristics are recognized. Meanwhile, the drift trend is quantified based on the double-time-constant integral, graded early warning is triggered, industrial standard signals are finally output, and the problem of electrode contact pollution is avoided in the whole process.

The invention discloses a carbon capture and amine recovery system. The system comprises a rough washing tower, an absorption tower, a decarbonization tower and a deamination tower which are sequentially connected through a pipeline system, the rough washing tower is used for removing pollutants in the flue gas, including sulfur oxides, PM particles, hydrogen sulfide and the like; an amine solution spraying module is arranged at the upper part of the absorption tower, flue gas enters from a lower layer area of the absorption tower, and the amine solution spraying module sprays an amine solution to capture carbon dioxide in the flue gas so as to form a carbon capture solution and decarbonized flue gas; the decarburization tower is used for receiving the carbon capture solution and treating the carbon capture solution to obtain high-purity CO2 and a recovery solution; wherein the high-purity CO2 is discharged or retreated; the recovery solution flows back to an amine solution spraying module in the upper layer area of the absorption tower through a pipeline system to realize cyclic utilization; and the decarbonized flue gas is upwards conveyed to a deamination tower, and is discharged after deamination. Through one set of system, three-stage flue gas purification treatment of desulfurization, carbon capture and amine capture and recovery is realized, and the whole set of system is high in recovery efficiency.

The invention provides a sewage steam stripping thermal self-circulation system which is characterized in that a first heat exchanger receives acidic water and is connected with a hot feed inlet of a steam stripping tower through a second heat exchanger, a first gas outlet of the steam stripping tower outputs ammonia gas through the second heat exchanger, and a second gas outlet outputs hydrogen sulfide; a purified water outlet of the stripping tower is respectively connected with a steam reboiler and a purified water inlet of a steam generator, a liquid outlet of the steam reboiler is connected with a condensed water inlet of the steam generator, a purified water outlet of the steam generator outputs purified water through a first heat exchanger, and a steam outlet and a condensed water outlet of the steam generator are connected with a steam compressor. And a steam outlet of the steam compressor is connected with a steam inlet of the steam reboiler. The problem of heat waste of purified water and condensed water can be solved, full utilization of medium-high temperature waste heat is achieved, the heat exchange process of raw material water is improved, the to-be-cooled temperature of the purified water is reduced, and energy loss is reduced.

The invention relates to the technical field of activated carbon modification, in particular to aerosol fluidized activated carbon modification equipment and method. The aerosol fluidized activated carbon modification equipment comprises an aerosol generator, an activated carbon modification tank, a Venturi bin, an air inlet pipeline, an induced draft fan, a circulating pipeline and a drying device. Gas is used as a carrier to carry aerosol and gaseous fluidized modified activated carbon particles, complete and uniform impregnation can be achieved, energy is saved, efficiency is high, and the application range is wider. The modified activated carbon prepared by the method can be effectively used for purifying radioactive gas, acid gas, alkaline gas, hydrogen sulfide, mercury steam and other gases.

The invention discloses a P.megaterium strain with stress resistance, growth promotion and environmental restoration functions and application thereof, and belongs to the technical field of microorganisms. According to the present invention, the preservation number of the Pristeria megaterium XT106 provided by the invention is CCTCC (China Center For Type Culture Collection) NO: M 2025912, and the preservation number of the Pristeria megaterium XT106 provided by the invention is CCTCC NO: M 2025912; the Pristia megaterium XT106 provided by the invention is a strain capable of oxidizing manganese to form a biological manganese oxide, and the biological manganese oxide can adsorb and remove heavy metals (Cu, Sb, Pb, Zn, Cd and Cr) and degrade antibiotics (tetracycline and ciprofloxacin). The strain can move, tolerate acid-base, high-salt, phenanthrene and sulfamethoxazole environments, has the capability of generating a biological membrane, and can generate hydrogen sulfide, adsorb / fix and remove heavy metals (Cd, Pb, Zn, Sb and Cu) and promote plant growth.

The invention discloses a coal bunker mixed gas concentration detection method based on a BSA algorithm and a BP neural network, and belongs to the technical field of gas detection. The coal bunker mixed gas concentration detection method based on the BSA algorithm and the BP neural network comprises the following steps: collecting gases including carbon monoxide, nitrogen dioxide, sulfur dioxide, hydrogen sulfide and methane, and constructing the BP neural network by taking normalized gas data as an input layer; and optimizing BP neural network parameters by using a BSA bird flock algorithm, carrying out network training by using a back propagation algorithm, and inputting gas concentration data collected in real time into the trained neural network in real time to obtain a predicted value of the gas concentration. According to the method, the parameters of the BP neural network are optimized through the BSA algorithm, the accuracy of network prediction is greatly improved, the gas concentration in the coal storage bunker can be monitored in real time, and once it is detected that the hazardous gas concentration exceeds the standard, quick response can be made and corresponding measures can be taken, so that potential safety risks are reduced.

The invention belongs to the field of gas sensors, and discloses a sensing-transfer-transmission separated Ni-MOF / SnO2 high-selectivity hydrogen sulfide room temperature sensor and a preparation method thereof. The sensor comprises an insulating substrate, a gold interdigital electrode, a SnO2 electron transport layer and a Ni-MOF sensing layer from bottom to top, wherein the SnO2 electron transport layer is prepared on the gold interdigital electrode through an atomic layer deposition process, the Ni-MOF sensing layer is prepared on the SnO2 layer in an in-situ growth mode, and a heterojunction is formed between the SnO2 layer and the Ni-MOF layer. The sensor combines the conductivity advantage of tin oxide, the specificity sensitivity advantage of the MOF layer and the transduction advantage of the Ni-MOF / SnO2 heterojunction, the defect of intrinsic high resistance when Ni-MOF is used as the sensor is overcome, room-temperature high-selectivity, low-detection-lower-limit and high-response detection of hydrogen sulfide is achieved, the humidity stability of the sensor is greatly improved, and the sensor has a wide application prospect. The method has a wide application prospect in the aspect of gas detection.

The invention provides a self-circulation water quality purification system which comprises a culture space body and a self-circulation purification system, the self-circulation purification system comprises a hollow flow guide box, a water pump, an anti-blocking cotton layer and a control device, the water pump is arranged in the flow guide box, and the flow guide box is arranged at the bottom of an inner cavity of a fish tank body; a water seepage guide plate is formed at the top of the guide box; the anti-blocking cotton layer is arranged on the upper surface of the water seepage guide plate; a fungus bed layer is laid on the upper surface of the anti-blocking cotton layer; a plurality of leaking holes are formed in the surface of the water seepage guide plate; a plurality of clapboards are arranged between the lower surface of the seepage guide plate and the bottom of the inner cavity of the guide box; one side of each partition plate in the width direction is connected with one inner side wall of the diversion box, and a gap is formed between the other side of each partition plate in the width direction and the inner side wall of the diversion box. And the microbial flora can obtain the maximum digestion nutrition due to the comprehensive and stable water flow, so that harmful substances such as ammonia, nitrogen, nitrate and nitrite in water are eliminated, meanwhile, hydrogen sulfide is avoided, and a good water purification function can be maintained.

The utility model relates to a hydrogen sulfide tail gas treatment device which comprises a first treatment chamber, and the first treatment chamber comprises an absorption tower and an absorption tower circulating pump; the second treatment chamber comprises a first-stage desorption tower feeding preheater, a first-stage desorption tower, a first-stage desorption tower top condenser, a first-stage desorption tower top gas-liquid separator and a first-stage desorption tower circulating pump; and the third treatment chamber is connected with the second treatment chamber and comprises a second-stage desorption tower, a second-stage desorption tower top condenser, a second-stage desorption tower top gas-liquid separator and a second-stage desorption tower circulating pump. Through mutual cooperation of the first treatment chamber, the second treatment chamber and the third treatment chamber, hydrogen sulfide tail gas is treated, hydrogen sulfide is recycled while standard emission of the hydrogen sulfide tail gas is achieved, and resource waste is avoided; the treatment device is few in related units, high in adaptability, capable of achieving efficient recovery and easy to operate and control.

The present invention discloses a novel gas-sensitive material, specifically a method for preparing a core-shell nanofiber gas-sensitive material based on a platinum-doped cobalt oxide / tin oxide heterostructure. The present invention utilizes a cobalt source, a tin source, a platinum source, and a polymer as raw materials, and produces a nanoscale platinum-doped cobalt oxide / tin oxide gas-sensitive material with high sensitivity and rapid response to hydrogen sulfide gas via coaxial electrospinning. This gas-sensitive material exhibits excellent gas-sensing properties for H2S gas at room temperature, with a short response time, enabling rapid detection of low-concentration H2S gas, a short recovery time, and excellent cyclic stability. Therefore, the gas-sensitive material of the present invention possesses excellent sensitivity and stability, and has broad application prospects, including applications in environmental monitoring, industrial safety, and gas sensors.

The invention discloses pipeline steel for an acid environment, a bimetal metallurgy composite pipe and a preparation method of the bimetal metallurgy composite pipe, and relates to the technical field of manufacturing of pipes for oil and gas gathering and transportation. The pipeline steel for the acid environment comprises the following chemical components in percentage by mass: 0.07%-0.11% of C, 0.25%-0.37% of Si, 1.15%-1.35% of Mn, less than or equal to 0.012% of P, less than or equal to 0.003% of S, 0.01%-0.03% of Nb, 0.015%-0.03% of Al, 0.01%-0.025% of Ca, less than or equal to 0.005% of N, less than or equal to 0.002% of O, less than or equal to 0.00015% of H, less than or equal to 0.007% of O + H + N and the balance of Fe and inevitable impurities. The pipeline steel for the acid environment has enough strength, high toughness and good hydrogen sulfide stress corrosion resistance and hydrogen induced cracking resistance, and can meet the requirements of gathering and transportation of corrosive oil and gas.

The invention discloses a dynamic early warning method for a high-sulfur-content natural gas leakage influence range in the field of leakage gas monitoring. The method comprises the following steps: arranging an intermediate infrared laser remote measurement system in a high-sulfur-content natural gas field to monitor the concentration of hydrogen sulfide gas in the gas field in real time; judging whether the gas field is leaked or not according to the concentration of the hydrogen sulfide gas, if so, executing the next step, otherwise, repeating the judgment; calculating leakage flow and leakage hole radius; and substituting the leakage hole radius and the leakage flow into the optimized time sequence Gaussian smoke cloud model to obtain the concentration values of the hydrogen sulfide gas at different moments and different spatial positions, namely the influence ranges of the leakage gas at different moments. According to the method, the size of the leakage hole can be calculated, the dynamic correction process of the three-dimensional leakage range of the Gaussian model is completed, various conditions of mixed gas leakage factors are considered at the same time, and the dynamic calculation process of the influence range of the leakage gas is achieved.