1824 results about "Sulfur dioxide" patented technology

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 present invention relates to the technical field of textile fabric detection, and in particular to a device for detecting the air permeability of textile fabrics, including a detection chassis, wherein the detection chassis is provided with an upper cavity and a lower cavity that are connected to each other, a load-bearing bracket is fixedly installed in the lower end of the lower cavity, and a driving motor is fixedly installed on the load-bearing bracket, the detection chassis is provided with a first limiting mechanism for fixing the fabric from the left and right sides through the driving motor, and a load-bearing bracket is symmetrically arranged in the upper cavity. The present invention arranges a ball screw driven to rotate by a driving motor in the detection chassis, and uses the ball screw and a lifting nut to pull the guide block and the guide rod; by arranging a load-bearing bracket that is symmetrical in front and back in the upper cavity, the fabric is clamped and limited from the front and back sides; a supercharger is used to infuse sulfur dioxide gas into the fabric fixed to different degrees, and by observing whether the magenta solution in the reaction tank fades, it is judged whether the sulfur dioxide gas has passed through the fabric.

The invention relates to the technical field of food quality management, in particular to a rapid detection method and kit for sulfur dioxide in preserved fruits based on a colloidal gold immunochromatography technology. According to the principle that malachite green MG can be rapidly detected by a malachite green colloidal gold immunochromatography detection card, sulfur dioxide or sulfite can be subjected to addition reaction with MG, and a product cannot be detected by the malachite green colloidal gold immunochromatography detection card, a reverse relationship between the content of sulfur dioxide in a sample and the residual amount of malachite green is obtained; mG is added into a preserved fruit sample extracting solution, after reaction, the malachite green colloidal gold immunochromatography detection card is used for detecting residual MG in a to-be-detected solution, so that sulfur dioxide in a preserved fruit sample is rapidly detected by using an immunochromatography colloidal gold detection method, and the kit disclosed by the invention is obtained based on the immunochromatography colloidal gold detection method. The method solves the technical problems that a colorimetric method is easily influenced by the clarification and transparency degree of sample liquid and background color, the sample treatment speed is low and the like.

The invention belongs to the technical field of adsorbent preparation, and relates to a preparation method of a series of M-TCBB metal organic framework materials and application of the M-TCBB metal organic framework materials to adsorption of sulfur dioxide and ammonia gas. The preparation method comprises the following steps: dispersing [9, 9 '-dicarbazole]-3, 3', 6, 6 '-tetracarboxylic acid (H4TCBB) serving as an organic ligand and any one or more of yttrium salt, zirconium salt, hafnium salt, cerium salt and thorium salt in a solution according to a certain mass ratio, and carrying out solvothermal reaction at 100-120 DEG C; and after the reaction is finished, centrifuging to take a precipitate, washing and drying to obtain a series of M-TCBB metal organic framework materials. The series of M-TCBB metal organic framework materials prepared by the invention have relatively good adsorption acting force on sulfur dioxide and ammonia gas, and are high in adsorption cycle stability; under a humid condition, capture of sulfur dioxide and ammonia gas shows a humidity enhancement characteristic, namely, water vapor promotes enhancement of the adsorption capacity of sulfur dioxide and ammonia gas.

The invention discloses an antistatic PPO material based on graphene and a preparation method thereof.The preparation method comprises the steps that aminated polyphenyl ether and modified filler react to prepare modified polyphenyl ether, the modified polyphenyl ether is treated with benzenesulfonyl chloride to prepare the antistatic PPO material, when the aminated polyphenyl ether and the modified filler are used, the modified filler is equivalent to a cross-linking agent, and when the modified filler is used for modifying the aminated polyphenyl ether, the modified filler is equivalent to a cross-linking agent; the modified filler is interspersed among the molecular chain segments, graphene is arranged in the modified filler and has a very good conductive effect, so that the material has an antistatic effect, and the surface of the modified filler contains an organic silicon chain segment, so that the antistatic property of the material is improved; when the material is combusted, a phosphorus-containing organic silicon chain segment on the surface of the modified filler can form a P-O-Si compact carbon layer, a nitrogen element on a side chain can generate amino free radicals, then active hydrogen atoms and hydroxyl free radicals are captured, a combustion chain reaction is interrupted, a sulfur element can release sulfur dioxide gas, the oxygen concentration is further diluted, and the oxygen concentration is reduced. Therefore, the material has a good flame-retardant effect.

The invention belongs to the field of industrial waste gas treatment, and particularly relates to an industrial waste gas treatment device for preventing atmospheric pollution and an operation method thereof.The industrial waste gas treatment device comprises a shell, the top of the shell is fixedly connected with an air pump, the output end of the air pump is connected with an air exhaust pipeline, and one end of the air exhaust pipeline extends into the shell; according to the industrial waste gas treatment device for preventing atmospheric pollution and the operation method of the industrial waste gas treatment device, a closed loop is formed through the four nozzles to spray limestone slurry to gas flowing upwards, the gas enters the shell along the gas inlet groove and then flows downwards along the arc-shaped surface at the bottom of the guide ring, and the gas impacts on the limestone slurry in the first liquid accumulation cavity; sulfur dioxide in gas reacts with limestone slurry, gypsum and the limestone slurry are separated by controlling rotation of a containing plate, the containing plate drives a plurality of first spoilers to rotate while rotating, part of the gas is pushed to impact downwards, and the gas makes contact with the limestone slurry circulating along a flow blocking ring; therefore, the reaction time of the gas and the limestone slurry is prolonged.

The present invention belongs to the technical field of ceramic waste gas treatment, and in particular, relates to a ceramic waste gas desulfurization and dust removal device, including a desulfurization tower, a wet electrostatic precipitator mechanism and a PLC controller. The desulfurization tower and the wet electrostatic precipitator mechanism are connected through a flue gas conveying channel, and the lower end of the desulfurization tower is fixedly connected to an inlet flue. The present invention adopts a one-stop purification equipment, which occupies a small area and can achieve a good treatment effect on multiple pollution factors such as particulate matter, sulfur dioxide, nitrogen oxides, etc. in the flue gas at one time. The desulfurization process technology is mature, and the desulfurization efficiency is greater than 99%, which can meet the flue gas treatment needs of various capacities. The wet electrostatic precipitator has high efficiency, and uses water spraying to clean the dust on the electrode surface. There is no secondary dust generation, which can ensure that the dust emission concentration at the outlet of the dust collector is ≤5mg / Nm 3 It can better adapt to the current environmental protection management status of the building ceramics industry, has good market promotion value, and has significant environmental and resource benefits.

The invention discloses a sulfur dioxide preparation device and technology, and belongs to the technical field of sulfur dioxide preparation, the sulfur dioxide preparation device comprises a furnace body and an exhaust port formed in the top of the furnace body, a funnel-shaped combustion port is formed in the middle of the bottom of the furnace body, and a combustor is installed at the bottom end of the combustion port. The inverted-cone-shaped combustion table is arranged at the position, located over the combustion opening, of the bottom of the furnace body, the combustion groove is formed in the top of the inverted-cone-shaped combustion table, then flame is guided towards the top of the inverted-cone-shaped combustion table through the annular shielding plate, and then the flame is guided to the top of the inverted-cone-shaped combustion table in cooperation with the conical cover and the leakage hole in the top of the conical cover; and when sulfur raw materials fall into the top of the inverted-cone-shaped combustion table through the conical cover, due to the fact that the inverted-cone-shaped combustion table and the conical cover are heated to be in a high-temperature state, the solid raw materials can be directly heated to be in a liquid state, then combustion reaction is conducted, and the functionality of the device is improved. The preparation rate of sulfur dioxide is improved, and the practicability is higher.

The invention discloses a flue gas sulfur dioxide concentration prediction method based on variational mode decomposition and integrated learning, which comprises the following steps: for a flue gas SO2 concentration sequence collected in a flue gas desulfurization system, firstly decomposing the time sequence into a plurality of internal mode functions by using a variational mode decomposition method; then, a feedforward cascade neural network, a long short-term memory network and an autoregressive integral moving average model are used as base learners, and the dynamic characteristics of each modal function are learned; and finally, training element learners based on prediction results of all the base learners, and establishing an integrated model of each modal function. And recombining the predicted values of all the integrated models to realize the prediction of the SO2 concentration of the discharged flue gas. Accurate prediction of sulfur dioxide in discharged flue gas is beneficial to reduction of air pollution, prevention of formation of acid rain and protection of an ecological system and biological diversity. By adopting emission reduction measures and optimizing the production process in advance, enterprises can reduce the environmental protection treatment cost and improve the green production level.

The invention belongs to the technical field of crystal porous material preparation and adsorption separation, and relates to a hydroxyl-modified porous coordination polymer material, a preparation method and sulfur dioxide capture application. The chemical formula of the porous coordination polymer is [Ni3 (OH) (TMBTTP) (BDC-2OH) 3], and the porous coordination polymer has a cylindrical cage, a fusiform cage, permanent pore channels, appropriate pore sizes and a hydroxyl-modified pore environment, and can provide sufficient space and rich hydrogen bond binding sites for gas molecular adsorption, so that the porous coordination polymer material is suitable for adsorption separation of SO2.

The invention provides an ammonium sulfate production process control method based on model prediction, which comprises the following steps: acquiring real-time data of flue gas flow, sulfur dioxide concentration, slurry PH value and ammonia water concentration, analyzing dynamic change characteristics of the flue gas flow, the sulfur dioxide concentration, the slurry PH value and the ammonia water concentration under different coal types and load working conditions, and constructing a flue gas component mutation characteristic library; transmitting an ammonia water adding amount and / or material transfer pump rotating speed control instruction to a desulfurization tower control system, executing dynamic adjustment of an absorption circulating tank, updating real-time monitoring data, comparing output prediction results, calculating deviation, and generating an optimized future prediction sequence; and judging whether the pH value and the ammonium sulfate concentration of the absorption circulating tank can continuously meet the preset upper and lower limit range conditions in the future preset time or not by comparing the prediction result sequences before and after optimization, if so, completing a dynamic adjustment period, and if not, recalculating the adjustment value of the ammonia water addition amount and / or the rotating speed of the material transfer pump.

The invention discloses an all-component comprehensive utilization method for leaching residues of a laterite-nickel ore high-pressure acid leaching process, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: granulating and sintering the iron-containing slag of the laterite-nickel ore high-pressure acid leaching process and raw materials containing coke powder, a flux and return mine to obtain sintered ore and sulfur dioxide flue gas; sulfur dioxide is used for preparing sulfuric acid and returned to the laterite-nickel ore high-pressure acid leaching procedure; smelting the sintered ore, coke and a slag modifier through a blast furnace to obtain molten iron and slag; the molten slag is subjected to cold quenching, and granulated molten slag is obtained; and after being ground, part of the granulated slag is mixed with the granulated slag and auxiliary materials containing an alkali activator and tailings in the laterite-nickel ore high-pressure acid leaching process to serve as a backfill material. By means of the method, low-consumption, efficient and large-scale all-component comprehensive utilization of the leaching residues of the laterite-nickel ore high-pressure acid leaching process can be achieved, 100% resource utilization of the residues is completed, and the method has considerable industrial popularization potential.

The invention discloses an instrument for detecting sulfur dioxide residue in traditional Chinese medicine, and relates to the technical field of traditional Chinese medicine detection, the instrument comprises a main machine, and also comprises a distillation flask arranged at the top of the main machine and used for containing a sample to be detected; the condensation assembly is arranged at the top of the distillation flask and comprises a condensation pipe and a sleeve, and the sleeve is fixedly arranged in the condensation pipe and divides the condensation pipe into a water passing cavity and a condensation cavity. The condensation cavity is divided into the upper condensation section and the lower condensation section through the separation part, heat can be effectively prevented from spreading to the whole condensation cavity, a certain temperature difference is kept between the upper condensation section and the lower condensation section, it is ensured that gas subjected to primary condensation can be effectively condensed on the upper condensation section, and therefore the condensation effect on distilled gas is improved; the hydrochloric acid component doped in the gas can be further reduced through twice condensation, the hydrochloric acid component is prevented from entering the absorption bottle along with nitrogen and sulfur dioxide to influence the absorption liquid, and the detection accuracy is improved.

The invention discloses an ammonia desulfurization method capable of remarkably reducing ammonia escape and application of the ammonia desulfurization method, and belongs to the technical field of flue gas ammonia desulfurization. The desulfurization method comprises the following steps: (1) flue gas enters a concentration cooling section from a flue gas inlet and is cooled to 60 DEG C or below; (2) the flue gas rises to an absorption section, is demisted by a first filler layer, a second spraying mechanism and a first-stage demister and then enters a purification section; (3) enabling the flue gas to pass through a second filler layer in the purification section, washing with water to capture ammonium sulfate and redundant ammonia, demisting by a combined demister, and feeding into a chimney for up-to-standard emission; and (4) compressed air enters the oxidation section to oxidize the absorption liquid refluxed by the absorption section, and the liquid formed after sufficient oxidation is sent to the absorption section to be sprayed. According to the method, the ammonia escape amount can be remarkably reduced, meanwhile, the absorption efficiency of sulfur dioxide in the flue gas can be improved, the ammonia escape amount is remarkably reduced fundamentally, and the aerosol phenomenon is avoided.

The invention relates to the technical field of coal-fired power plant environmental protection, in particular to a coal-fired power plant intelligent environmental protection island control system based on multi-source data fusion. Comprising a multi-source data acquisition module, a data transmission module, a data preprocessing module, a multi-source data fusion module, an operation state analysis module, an intelligent control decision module, a control instruction execution module and a man-machine interaction module. According to the coal-fired power plant intelligent environmental protection island control system based on multi-source data fusion, equipment operation, environmental monitoring, power grid, fuel and meteorological data are widely acquired through the multi-source data acquisition module, the limitation of a single data source of a traditional system is broken through, a distributed Kalman filtering algorithm is combined with a neural network algorithm for data fusion, and the data fusion efficiency is improved. According to the method, the incidence relation between data can be deeply mined, temperature and pressure parameters of desulfurization equipment and flue gas sulfur dioxide concentration data are subjected to fusion analysis, the reason of desulfurization efficiency reduction can be accurately positioned, and compared with traditional single data source judgment, the fault diagnosis accuracy is improved.

This invention belongs to the field of catalyst technology, specifically relating to a selective reduction catalyst for the production of sulfur from sulfur dioxide and its application method. The selective reduction catalyst for sulfur production from sulfur dioxide contains 1-2 wt% cobalt (CoO), 4-10 wt% molybdenum (MoO3), and 2-4 wt% zinc (ZnO), with TiO2-Al2O3 as the support. This invention exhibits good wide-temperature reaction performance, heat resistance, and water vapor resistance; the single-pass yield of elemental sulfur is higher than 80%, and the reaction process has high efficiency, showing promising application prospects.

The invention discloses an integrated wet-process waste gas multi-pollutant efficient cooperative treatment device and method. The device is provided with a pre-oxidation section, a centrifugate membrane gas-solid separation section, a wet spraying absorption section, a rotational flow dehydration section, an electrostatic reaction section, a filler demisting section and an adsorption and catalytic reaction section, an air inlet pipe and a liquid discharge pipe are arranged at the bottom of the device, and an exhaust pipe is arranged at the top; the pre-oxidation section comprises a gas inlet pipe, an oxidant injection pipe and a mixing plate; the centrifugate membrane gas-solid separation section, the wet spraying absorption section, the rotational flow dehydration section, the electrostatic reaction section, the filler demisting section and the adsorption and catalytic reaction section are sequentially arranged from bottom to top. By means of the device and method, particulate matter, sulfur dioxide, nitric oxide, fluoride, HCl, heavy metal, VOCs, dioxin, malodorous gas and other waste gas multiple pollutants generated in the solid hazardous waste co-treatment process of the industrial kiln and the industrial boiler can be removed, and waste gas emission meets the emission standard and sensory requirements.

The invention relates to the technical field of carbon dioxide recovery waste gas purification, in particular to waste gas purification equipment for carbon dioxide recovery and a purification method thereof.The waste gas purification equipment for carbon dioxide recovery comprises a shell assembly and further comprises a slag removal assembly, and the slag removal assembly comprises a fixed cylinder and a rotating part; the rotating component comprises a slag removal motor, a first stirring plate and a second stirring plate, a fan-shaped shell is fixedly mounted at the bottom of the outer cylinder, a water outlet part is arranged at the bottom of the fan-shaped shell, and a collecting component is arranged in the fan-shaped shell, and the waste gas purification method for carbon dioxide recovery comprises the steps of spraying, purification and the like. The device has the advantages that sediments in the lime water are continuously removed in the waste gas purification process, the negative influence of sediment accumulation on the sulfur dioxide removal efficiency is avoided, sulfur dioxide in the waste gas is effectively purified, corrosion of the sulfur dioxide to subsequent carbon dioxide recovery equipment is reduced, and the reliability and the safety of a whole waste gas treatment system are improved.

The invention belongs to the technical field of preparation of sulfur, and particularly relates to a process for producing sulfur from sulfur dioxide. The SO2 introduced by the sulfur dioxide gas flow is selectively reduced into elemental sulfur by using hydrogen introduced by the hydrogen flow under the temperature condition of 160-320 DEG C through one or more reaction devices; each reaction device is provided with one or more selective reduction reactors which are connected in series, one or more catalyst bed layers are arranged in each selective reduction reactor, and each catalyst bed layer is filled with a selective reduction catalyst. The method is simple in process reaction, short in flow and high in efficiency, products except sulfur are water or basically water, and the method has a certain application prospect.

The invention relates to the technical field of metallurgy, in particular to a preparation method of composite calcium ferrite, which comprises the following steps: mixing and grinding pretreated industrial copperas and pretreated titanium gypsum to obtain a mixture, or mixing and grinding dried industrial copperas and pretreated titanium gypsum to obtain a mixture; mixing the mixture with water, pressing the mixture into blocks, and drying the blocks to obtain a blocky mixture; and calcining the blocky mixture to obtain the composite calcium ferrite. The titanium gypsum is rich in calcium, sulfur and a part of iron, the industrial copperas are mainly ferrous sulfate, the two solid wastes are mixed and calcined, the mixture is decomposed to generate sulfur dioxide and can be recycled to prepare sulfuric acid, calcium and iron are combined to form composite calcium ferrite, valuable elements such as calcium, sulfur and iron in the titanium gypsum and the industrial copperas can be fully utilized, and the industrial copperas can be recycled. And resource comprehensive utilization of typical solid wastes in the titanium dioxide production industry is realized.

The invention discloses a gas-steam linear generator, which relates to the technical field of generators and comprises a gas-steam engine body, a generator and a boiler, the generator and the boiler are connected with the gas-steam engine body, a gas combustion chamber and a steam conveying chamber are arranged in the gas-steam engine body, and the boiler is communicated with a first conveying pipe and a second conveying pipe. Connecting pipes are fixedly arranged at the ends of the first conveying pipe and the second conveying pipe correspondingly, and a purification assembly for treating gas after combustion is arranged in the boiler. Two chambers are arranged, one chamber is used for generating energy by combusting gas energy to drive the generator to operate, high-temperature flue gas generated by the combusted gas is fed into the boiler, after harmful gas such as sulfur dioxide in the high-temperature gas is removed by the purification assembly, water in the boiler is boiled through heat in the flue gas, and the water in the boiler is heated to the normal temperature. And the generated steam is fed into the other chamber to share the power required by the generator, so that the energy loss is reduced, and the environment is protected.

The invention belongs to the technical field of dangerous solid waste resource recovery in the nonferrous smelting industry, and discloses a method for recovering arsenic trioxide by leaching arsenic sulfide slag from ferrihydrite. The arsenic sulfide slag is leached by ferrihydrite in an acid solution under the normal pressure condition, so that the leaching rate of arsenic in the arsenic sulfide slag is increased; and sulfur dioxide gas is introduced into the leachate to reduce arsenic in the solution, finally arsenic trioxide is obtained through evaporation concentration and cooling crystallization, meanwhile, oxygen is introduced into the crystallized liquid to oxidize and recycle iron, and cyclic utilization of resources is achieved. The method has the characteristics of simplicity and convenience in operation, low cost, safety, reliability and the like, the arsenic sulfide slag can be effectively recycled to prepare the arsenic trioxide product, and the purpose of treating waste with waste is achieved.

The invention discloses spraying desulfurization and dust removal equipment with a waste water recovery structure and a use method, and relates to the technical field of desulfurization equipment, the spraying desulfurization and dust removal equipment comprises a spraying cylinder, a waste water recovery seat and a driving dumping seat, the bottom end of the spraying cylinder is provided with the waste water recovery seat, and the driving dumping seat is installed on the bottom wall of the waste water recovery seat; and the circulating liquid guide frame is connected with the driving dumping seat through a rotating shaft. The inner side of the waste water recovery seat is provided with the precipitation recovery assembly, chemical reagents in the precipitation reagent storage tank are added into the circulating liquid guide frame and react with sulfate in waste liquid to generate insoluble precipitates, and reagents such as calcium salt and barium salt are added in the spraying desulfurization and dust removal process, so that precipitation of sulfate can be promoted, and the precipitation efficiency is improved; the desulfurization and dust removal efficiency can be improved, and the reagent reacts with harmful substances such as sulfur dioxide in the flue gas to generate insoluble compounds, so that pollutants in the flue gas are more effectively removed, and the quality of the absorption liquid is ensured to meet the requirement of recycling.

The invention relates to the technical field of flue gas emission, and discloses an alkali furnace ultra-clean emission device with a phase change filling layer linked with a desulfurizing tower, the alkali furnace ultra-clean emission device comprises a tower body, the tower body comprises an upper tower, a middle tower and a lower tower, the inner wall of the upper tower is fixedly connected with a spraying assembly, the inner wall of the middle tower is slidably connected with a filling part, and the spraying assembly is fixedly connected with the spraying assembly. An air inlet is formed in the outer surface of the circumference of the lower tower; the filling part comprises a plurality of lifting rods located at the same height, and the multiple lifting rods are slidably connected to the inner wall of the middle tower. The alkali furnace ultra-clean discharge device with the phase change filling layer and the desulfurization tower linked can effectively solve the problems that in the prior art, precipitated sulfur is prone to adhering to the surface of the filler, the original porous structure is blocked by a compact sulfur layer along with more and more sulfur adhering to the surface of the filler, the actual contact area of gas and liquid phases is greatly reduced, and the service life of the gas and liquid phases is prolonged. The reduction of the contact area can directly weaken the absorption efficiency of the sulfur dioxide, and the concentration of the sulfur dioxide exceeds the standard.

The invention discloses a sulfur dioxide pollution source diffusion simulation and prediction method. The method comprises the following steps: analyzing and collecting real-time monitoring data of pollution source emission by using multispectral imaging, classifying pollution sources, identifying a concentrated area of the pollution sources, and defining the concentrated area of the pollution sources as pollution hot spots; estimating the emission intensity of a pollution source by using a reverse calculation technology, and modeling and predicting the time change of pollutant emission; integrating meteorological data, and considering the influence of terrain on a pollutant diffusion path; simulating a motion path of each unit pollutant in the air and a superimposed effect among a plurality of pollution sources; according to the method, the complete process of pollution source identification, diffusion modeling, dynamic prediction, health exposure assessment and mitigation measure optimization is realized, the innovative steps of virtual pollution cloud modeling, dynamic population exposure assessment and pollution mitigation path optimization expand the capability of traditional pollutant diffusion prediction, and it is ensured that the method is more comprehensive and accurate.

The invention relates to the technical field of automatic control, in particular to an automatic control method for a wet desulphurization slurry circulating pump, which comprises the following steps of: acquiring a preset local range of data points in three flow data time sequence of sulfur dioxide, replacing the data points in the preset local range by using an interpolation method, obtaining a reference local range of the data points; the noise degree of the data points is obtained through the difference between the flow values and the fitting values of the data points in the preset local range and the reference local range and the difference between the flow data time sequence sequences; in the Fisher optimal solution method, the flow data time sequence is divided into a plurality of data segments according to the noise degree of data points, a sliding window is set based on the obtained size of the sliding window to denoise the flow data time sequence, and then the slurry flow needed by the slurry circulating pump is determined, so that automatic control over the slurry circulating pump is achieved. And the accuracy of automatic control of the slurry circulating pump is effectively improved.

The invention relates to a device and a method of a high-sensitivity suspension single-droplet sensor for monitoring PM2.5 pollution, belongs to the technical field of aerosol microdroplet spectrum trace analysis, and solves the problem that ppb-magnitude gas cannot be monitored in the prior art. The method comprises the following steps: pumping aerosol into a sample cell of a droplet suspension system in a single droplet form; introducing required reaction gas into the sample pool through an atmosphere control system; scattered light signals of the single liquid drops are respectively input into the dynamic signal processing system and the microdroplet imaging system; acquiring the characteristic peak displacement change of the metal ion sensing microdroplet; establishing a gas particle distribution Mie scattering inversion model based on micro-droplet dynamic response; inverting the radius of the liquid drop according to the stimulated Raman scattering / stimulated elastic scattering signal; according to the quantitative relationship of the reaction, calculating the generation of sulfate by the droplet suspension system (sensor); and judging which gas in the actual atmosphere is a main oxidation pathway for oxidizing sulfur dioxide to generate sulfate pollutants according to a calculation result.

The invention discloses a sampling device for detecting the content of sulfur dioxide in flue gas of a flue gas tower. The sulfur dioxide detection device comprises a box body, a lifting mechanism and a lifting box, the box body is arranged in the flue gas tower; a first through hole and a second through hole are formed in the outer wall of the box body, and plugging assemblies are mounted in the first through hole and the second through hole; two sampling assemblies are installed in the lifting box, the lifting box is slidably connected into the box body in the vertical direction through a lifting mechanism, and the lifting mechanism comprises a motor, a first gear, a second gear, a lead screw and a sliding rod; the lead screw is rotationally connected into the box body, the rotating axis is arranged in the vertical direction, the sliding rod is fixedly arranged in the box body, the lifting box is slidably connected with the sliding rod, and the lifting box is connected with the lead screw through a lead screw nut; the motor drives the screw rod to rotate; according to the flue gas sampling device, flue gas at the top and the bottom can be sampled in sequence from top to bottom, meanwhile, automatic connection and blocking can be formed, flue gas at different positions can be sampled, data at different positions can be conveniently compared in the later period, it is guaranteed that sampled gas is purer, and the phenomenon that the gas is disorderly mixed in the box body can be avoided.

The present invention relates to the technical field of fluidized bed combustion furnaces, and in particular provides an intelligent and clean biomass fluidized bed combustion furnace. The intelligent and clean biomass fluidized bed combustion furnace includes an installation component, a mixed flow component, a feed component, a combustion furnace and an exhaust gas circulation component. The present invention can provide a uniform and continuous gas supply flow and biomass fuel to the combustion furnace, ensure the uniformity of the temperature of the combustion process in the combustion furnace, and use the gas supply flow to preheat and dry the biomass fuel, improve the combustion efficiency, reduce the influence of moisture on the combustion process, reduce fuel consumption and flue gas emissions, and improve the removal efficiency of sulfur dioxide in the flue gas, reduce the emission level of sulfur dioxide, and effectively control the generation of nitrogen oxides, improve energy efficiency, reduce energy waste, ensure that the combustion process is environmentally friendly and meets emission standards, and separate particulate matter from the initial combustion smoke generated by combustion, significantly reducing the pollution concentration of particulate matter in combustion emissions, meeting environmental protection requirements.

The present invention provides a ship exhaust gas desulfurization device and a desulfurization method, which include a sulfur-containing ship exhaust gas pretreatment system, a seawater pretreatment system, a membrane contactor, and a seawater post-treatment system; the outlet end of the sulfur-containing ship exhaust gas pretreatment system is connected to the shell-side inlet end of the membrane contactor for sending the dust- and oil-removed exhaust gas into the shell side of the membrane contactor; the outlet end of the seawater pretreatment system is connected to the tube-side inlet end of the membrane contactor for sending the pretreated seawater into the tube side of the membrane contactor; the membrane contactor is a membrane contactor filled with polytetrafluoroethylene hollow fiber hydrophobic microporous membranes; the inlet end of the seawater post-treatment system is connected to the tube-side outlet end of the membrane contactor for post-treating the seawater after absorbing sulfur dioxide and oxidizing sulfite into sulfate. The ship exhaust gas desulfurization device described in the present invention has a high integration degree, a compact volume, and a high desulfurization efficiency, can achieve efficient desulfurization of ship exhaust gas, and has good application prospects.