1909 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 relates to a rabbit meat freshness detection method based on an electronic nose technology. The volatile gas release mode of the rabbit meat under different storage conditions including temperature, humidity and time is analyzed through experiments, and key putrefying gas including dimethylamine, hydrogen sulfide and aldehydes and the concentration change trend are recognized; a metal oxide semiconductor (MOS) or an electrochemical sensor matched with the gas is screened according to the identified main decay gas, and a sensitive material means comprising a tin oxide thin film doped with platinum is optimized; a response matrix of different sensors to target gas is established through experiments, and a multi-sensor signal fusion algorithm is optimized; a temperature and humidity sensor is introduced, and environmental noise correction is performed in combination with odor signals; adopting a convolutional neural network feature extraction method to extract nonlinear features associated with the rabbit meat decay stage; docking the extracted smell features with the dynamic distribution model, and unifying the quantization dimension through a feature standardization algorithm; and correcting the predicted corruption trend in real time in combination with a smell distribution dynamic model.

The invention relates to the technical field of auxiliary devices of detection equipment, in particular to a robot and method for detecting the stability of the wall of a pile hole and poisonous gas in the hole, and the robot can be automatically clamped according to the size of the pile hole and automatically ascends and descends for detection after being clamped. The method for detecting the soil texture of the poison gas in the deep pit comprises the following steps: according to the types of harmful gases possibly existing, oxygen, methane, hydrogen sulfide, carbon monoxide and the like, detecting the soil texture of the poison gas in the deep pit, and detecting the soil texture of the poison gas in the deep pit. A multi-parameter gas detector capable of detecting the gases is selected, so that all operators are properly trained to know how to correctly use the detector and deal with emergency situations; and determining that the sensor works normally and is not damaged or blocked, and placing the gas detector at different heights of the pile hole, generally performing detection once from the bottom to the top at a certain distance so as to obtain comprehensive data.

The invention relates to the technical field of odor emission reduction, in particular to an odor emission reduction control system and method for livestock and poultry manure compositing. According to the system and the method, concentration changes of ammonia gas, hydrogen sulfide and volatile organic compounds and temperature and humidity data in a composting environment are accurately obtained through real-time performance and multi-parameter association of gas monitoring in the composting process; the method comprises the following steps of: calculating a diffusion path, a speed and a coverage area of gas in a compost body through finite element analysis, quantifying the distribution characteristics of gas concentration in space, optimizing the wind speed, the wind quantity and the layout of a ventilation system, and improving the ventilation efficiency. Pattern recognition is performed on compost environment gas emission data through the convolutional neural network, the turning frequency and the compost microenvironment are dynamically adjusted in combination with the gas concentration, a gas emission high-value area and a main guide source are accurately positioned, accurate control over compost fermentation odor emission is achieved, and the systematicness and refinement level of compost odor treatment is improved.

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 relates to the technical field of ventilation, in particular to a ventilation and dust removal device and mine hydrogen sulfide treatment equipment. The ventilation and dust removal device comprises a ventilation pipe and a cleaning mechanism, and a dust screen is arranged at the end of the ventilation pipe; the cleaning mechanism comprises a cleaning shell, a driving rotary drum and a cleaning assembly, the cleaning shell is fixedly arranged at the end of the ventilation pipe, a first rotating shaft is fixedly arranged in the cleaning shell and located on the outer side of the ventilation pipe, the driving rotary drum is pivoted to the first rotating shaft, and the cleaning assembly is arranged on the driving rotary drum. The multiple cleaning assemblies are arranged in the circumferential direction of the driving rotary drum at intervals and used for removing impurities attached to the dustproof net. According to the ventilation and dust removal device, by arranging the cleaning assembly connected to the driving rotary drum, impurities attached to the dustproof net are removed, so that the circulation degree of gas in the ventilation pipe is guaranteed, and the air quality of an underground coal mine is guaranteed; manual removal is not needed, and the labor intensity of an operator is relieved.

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 a method for preparing high-purity lithium sulfide from lithium carbonate, and belongs to the technical field of lithium material preparation, and the method comprises the following steps: heating a ball-milled mixture of industrial-grade lithium carbonate and an alumina additive to 750-900 DEG C, and carrying out heat preservation and calcination to generate lithium oxide; performing hydrolysis reaction on lithium oxide in hot water, and filtering to obtain a high-purity lithium hydroxide solution; mixing the lithium hydroxide solution with the sulfur-containing protein, and performing spray drying to obtain a mixed precursor; calcining the mixed precursor at a low temperature of 210-340 DEG C in an inert atmosphere; and heating to 550-660 DEG C, calcining at a high temperature, introducing hydrogen sulfide gas, reacting lithium hydroxide to generate lithium sulfide, and cooling to obtain the high-purity lithium sulfide. The invention provides the method for preparing the high-purity lithium sulfide, the purity, the production efficiency and the raw material utilization rate of the lithium sulfide are remarkably improved, and the technical defects of low purity, incomplete raw material reaction, non-uniform precursor mixing, complicated process, difficulty in large-scale production and the like in the traditional lithium sulfide preparation method are overcome.

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 discloses a sulfur-containing natural gas detection method and a sulfur-containing natural gas detection system, and relates to the technical field of oil and gas measurement. A detection system based on a sulfur-containing natural gas medium comprises a standard flow measurement unit, a hydrogen sulfide filling system, a detected flow measurement unit and a hydrogen sulfide recovery system. The standard flow measurement unit, the detected flow measurement unit and the hydrogen sulfide recovery system are sequentially arranged in the natural gas inlet direction. The hydrogen sulfide filling system, the detected flow measurement unit and the hydrogen sulfide recovery system are connected in series; the standard flow measuring unit and the hydrogen sulfide filling system are connected in parallel, flow detection of the detected flow measuring unit is not affected by the content of hydrogen sulfide components in an upstream gas source by adjusting the hydrogen sulfide filling system, the gas quality condition and the detection flow of the high-sulfur-content natural gas flowmeter are covered more widely, and stability is better. And the accuracy of the measurement result of the flowmeter used on site is improved.

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 coal mine safety information intelligent monitoring system applying an industrial internet, and relates to the technical field of intelligent monitoring. During operation of the system, multi-source data are collected from equipment and subjected to primary processing, and data from different sources are subjected to space-time matching and association by using a data fusion technology; and obtaining a coal mine safety information early warning index Yjzs after calculation, analyzing the stress change and risk of the underground rock stratum, and simulating and predicting the chemical risk in the mine by processing the hydrogen sulfide diffusion rate and nitrogen oxide concentration gradient data and adopting a computational fluid dynamics (CFD) chemical reaction rate model. And monitoring and evaluating behaviors of coal miners and operation conditions of equipment, comparing a coal mine safety information early warning index Yjzs with a preset warning threshold value M and a danger threshold value N, generating a corresponding strategy scheme according to a comparison result, and dynamically adjusting the threshold value to adapt to different mine conditions and safety standards.

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 relates to the technical field of data processing, in particular to a cattle breeding environment monitoring method, system and equipment based on data analysis, and the method comprises the steps: obtaining ammonia concentration sequences and hydrogen sulfide concentration sequences at a plurality of positions of a cattle farm, carrying out window sliding, and obtaining a plurality of ammonia concentration window data sets and hydrogen sulfide concentration window data sets; according to the data change relation between the ammonia concentration window data set and the hydrogen sulfide concentration window data set, screening to obtain a target window, according to the difference between the target window and the data of the association moment of other positions, obtaining data monitoring hysteresis, and according to the data monitoring hysteresis, obtaining cattle life parameters, based on the cattle life parameters of all the positions, the environment risk factors of all the moments are obtained, so that the cattle breeding environment is accurately monitored, and the technical problem that existing cattle breeding environment detection is difficult is solved.

A drilling fluid composition includes a base fluid; at least one additive selected from the group consisting of an anti-foaming agent, a fluid-loss additive, a viscosity modifier, a shale stabilizer, an alkali compound, a bridging agent, and a weighting agent; and 0.01 to 0.5 weight percentage (wt. %) of particles of steel slag, based on a total weight of the drilling fluid composition. A method for reducing a hydrogen sulfide (H2S) content of a H2S-containing subterranean formation. A process for removing H2S from a H2S-containing gas composition by the drilling fluid composition.

The invention discloses an acid-making process using hydrogen sulfide waste gas and waste sulfuric acid, and relates to the technical field of acid-making processes, and the acid-making process specifically comprises the following steps: step 1, high-temperature reaction and gas generation, step 2, gas purification and conversion, a demister and a spraying assembly are used for removing dust, impurities and harmful substances in the gas; and step 3, sulfur trioxide absorption and sulfuric acid preparation. According to the acid-making process using the hydrogen sulfide waste gas and the waste sulfuric acid, the absorption slurry is sprayed out through the nozzle to be in countercurrent contact with the gas mixture, physical absorption and chemical reaction are combined, dust, impurities and other harmful substances in the gas mixture are effectively removed, and the gas purification efficiency is improved; the nozzles at the upper end and the lower end are used for spraying and cleaning the corrugated plate, it is ensured that the corrugated plate is always kept clean, system efficiency reduction caused by blockage or pollution of the corrugated plate is reduced, and the operation efficiency and stability of the whole system are improved.

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.