462 results about "Mixing zone" patented technology

The invention relates to the technical field of aquaculture, discloses a treatment device for aquaculture wastewater, and solves the problems that the concentration value uniformity of a mixing area of a large amount of wastewater and a medicament is relatively low, a large amount of time is needed for reaction, and the efficiency is low in an existing treatment device for the aquaculture wastewater. The device comprises a device main body, a water inlet pipe and a water outlet pipe which are connected to one side of the device main body, and a filter screen and an adsorption activated carbon plate which are arranged in the device main body, through a medicine tank and a medicine adding structure, quantitative medicine feeding is carried out according to the water conveying amount to adjust the PH value, accurate medicine adding is achieved, and a medicine storage barrel is linked with a water pressure plate; quantitative dosing is performed according to the amount of wastewater, rapid outflow and mixing of chemicals are promoted, the reaction efficiency is improved, wastewater is fully utilized to input a power linkage mixing structure, the chemicals and the wastewater are fully and uniformly mixed, a built-in column and an expansion plate of the rotating column can also enlarge the mixing range, and the uniformity and stability of the treatment effect are ensured.

A system for removing carbon dioxide from a gas includes: an eductor, a CO2-lean gas outlet fluidly coupled to the eductor, a fan fluidly coupled to the CO2-lean gas outlet, the fan being rotatable to discharge the CO2-lean gas from the CO2-lean gas outlet, and a capture solution tank. The eductor includes a capture solution inlet operable to receive a lean capture solution, a gas inlet operable to receive the gas that includes carbon dioxide, a mixing zone configured to react the lean capture solution and the gas that includes carbon dioxide; and, an eductor outlet operable to discharge a mixed fluid that includes a rich capture solution and a CO2-lean gas. The capture solution tank is fluidly coupled to the eductor outlet and to the CO2-lean gas outlet, and the capture solution tank configured to collect the rich capture solution.

The utility model provides a PAM (polyacrylamide) dispensing system for waterworks, which comprises a dispensing box provided with a mixing area, a curing area and a medicine storage area which are communicated with one another, and a liquid level meter is arranged at the upper part of the inner wall of the medicine storage area; a stirring assembly; the feeding assembly is used for feeding materials into the mixing area and metering the feeding mass within a constant time; the water inlet assembly is used for adding liquid into the mixing area and measuring the flow of the added liquid; the medicine outlet assembly is used for outputting the liquid medicine in the medicine storage area to the outside; the backwashing assembly comprises a connecting header pipe, a water conveying pipe connected with the water inlet end of the connecting header pipe, an emptying valve arranged at the water outlet end of the connecting header pipe, and a first emptying pipe, a second emptying pipe and a third emptying pipe which are sequentially arranged at the bottoms of the mixing area, the curing area and the medicine storage area and are respectively communicated with the connecting header pipe; a backwashing pump is arranged on the water conveying pipe; the control cabinet is electrically connected with the liquid level meter and the backwashing pump respectively; the PAM dispensing system is high in automation degree and has a backwashing function.

The utility model provides a circulating oxygen control enhanced biochemical sewage treatment system. The circulating type oxygen control enhanced biochemical sewage treatment system comprises a pool body, a mixing area, a screening area, an enhanced biochemical area, a selection area, a circulating area, a mud-water separation area and a backflow area are sequentially arranged in the pool body in a communicating mode, and a sewage inlet is formed in the mixing area. The screening area, the enhanced biochemical area and the selection area are respectively provided with an aeration device and a dissolved oxygen meter to control the dissolved oxygen concentration, the circulation area is provided with an air lifting and pushing device, the sludge-water separation area is provided with a filler layer, a water outlet and a sludge outlet, the sludge outlet is communicated with the backflow area, and the backflow area is communicated with the mixing area to enable at least part of sludge to flow back to the mixing area. The system disclosed by the utility model can be used for removing different pollutants in the same pool body and in the same microbial environment, and has the advantages of shortening the treatment flow, improving the treatment effect, saving the operation cost and the like.

The utility model relates to the technical field of water treatment, in particular to a multi-phase component multi-stage reinforced mixing device which comprises an outer cylinder, an inner cylinder, a flow guide assembly, a turbulent flow assembly, a mixing and stirring assembly and the like, a first mixing area is formed in the outer cylinder, and feeding is performed in the circumferential tangential direction; a second mixing area provided with a mixing and stirring assembly is formed in the inner cylinder body; the flow guide assembly is located between the first mixing area and the second mixing area; a third mixing area is formed between the outer barrel and the inner barrel, and the turbulent flow assembly is arranged in the third mixing area. The overall structure is compact and simple; sewage is mixed through the rotational flow effect and the centrifugal effect of the first mixing area, meanwhile, components in the sewage are separated and sorted, heavy impurities are centrifugally separated and discharged, and other impurities enter the second mixing area and the third mixing area to be continuously subjected to mechanical mixing, circulating flow mixing and vortex flow mixing reaction; meanwhile, the particle size of the flocculation core is controlled, so that the mixing efficiency is improved, and the utilization rate of the coagulation agent is improved.

The invention relates to the field of numerical simulation calculation, and particularly discloses a calculation method of a water-rich rock mass fracture grouting diffusion process under a slurry-water mixing effect, which comprises the following steps: (1) respectively calculating the relationship between the width X of a slurry-water mixing area and the grouting time t under one-dimensional fracture and two-dimensional fracture grouting diffusion working conditions; and (2) calculating the relationship between Ry, Rm and t under the two working conditions. And (3) calculating a slurry concentration space distribution equation under the two working conditions. And (4) calculating the spatial distribution equation of the rheological parameters of the slurry under the two working conditions. And (5) respectively calculating grout flow control equations expressed by the grouting flow q under the two working conditions. And (6) calculating a pressure space distribution equation in the grouting diffusion area under the two working conditions. And (7) calculating a relational expression between the grouting pressure and the time at the inlet under the two working conditions. By means of the relational expression, effective prediction of the grouting pressure and the grouting diffusion radius in the grouting diffusion process can be achieved, and the prediction precision of the grouting diffusion process is greatly improved.

The present disclosure is directed to a rotating detonation combustor that includes a forward wall, a radially inner wall, and a radially outer wall. The forward wall is disposed at an inlet end of the rotating detonation combustor. The radially inner wall surrounds a longitudinal axis and extends downstream from the forward wall to an outlet end of the rotating detonation combustor. The radially outer wall extends downstream from the forward wall to the outlet end and surrounds the radially inner wall to define at least one annular plenum between the radially inner wall and the radially outer wall. At least one partition is proximate to the inlet end and defines at least two mixing zones. A plurality of oxidizer inlets and a plurality of fuel inlets are disposed at the inlet end in fluid communication with the at least two mixing zones.

The invention relates to additive manufacturing an object for separation and / or conversion of a substance from a liquid by guiding the liquid therethrough. A build material is printed in a predetermined arrangement in order to form a three-dimensional monolith structure. The build material includes an active / activated material configured to interact with the liquid. The three-dimensional monolith structure is printed to define an inlet, an outlet and a plurality of flow channels arranged between the inlet and the outlet of the structure, wherein the plurality of flow channels define meandering flow paths between the inlet and the outlet, wherein at least one mixing region is provided within the structure, wherein the at least one mixing region is in fluid connection with at least a set of the plurality of flow channels such as to allow mixing of the liquid guided through said set of the plurality of flow channels.

The utility model discloses an environment-friendly and efficient high-concentration industrial wastewater treatment device which comprises a tank body, a mixing assembly is arranged in the tank body, a drain valve is arranged at the bottom of the outer wall of the tank body, a filter plate is fixedly arranged above an inner cavity of the tank body, an isolation hopper is fixedly arranged in the inner cavity of the tank body, and a water outlet is formed in the inner cavity of the tank body. The isolation hopper is located below the filter plate, an electromagnetic valve is arranged at the bottom of the isolation hopper, a connecting pipe fixedly penetrates through the bottom of the outer wall of the tank body, a water pump is arranged on a pipeline of the connecting pipe, and the other end of the water pump can convey water towards the filter plate. The utility model relates to the technical field of wastewater treatment, the tank body is divided into the mixing area and the filtering area through the isolation hopper, mixed wastewater is refluxed through the water pump and the connecting pipe, caked impurities in the wastewater can be refluxed to the filter plate to be filtered, and the filtering mode avoids the situation that a drain valve is blocked.

The utility model provides a novel perishable garbage bio-drying feeding and discharging system, which is characterized in that a fermentation bin body is arranged in a cylinder body of an outer shell of a tower-type treatment device, a stirring system is arranged in the fermentation bin body, layered mixing areas are arranged in the fermentation bin body of the cylinder body, the mixing areas are communicated with one another, and the stirring system is arranged in the stirring system. The stirring system is provided with a stirring component in each layer of mixing area, the barrel body is provided with a groove part in each layer of mixing area, a blocking door capable of being opened and closed is arranged in the groove part, a guide rail is arranged outside the barrel body, and the guide rail is provided with a material collecting device capable of moving to each layer of mixing area by lifting or moving downwards. The material collecting device slides up and down along the guide rail and is matched with the blocking door and the stirring system which are arranged in a layered manner, so that staggered discharging and mixed feeding of layered materials are realized, and the materials in the fermentation bin body in the barrel body are fully mixed through continuous circulating discharging and feeding procedures.

The invention provides a natural gas comprehensive conveying device which comprises a mixing assembly and a bottom plate, the mixing assembly comprises a mixer, an inner cylinder is fixedly installed in the mixer, the inner cylinder located in the mixer is connected with a fixing pipe in a penetrating mode, and the surface of the fixing pipe is rotationally connected with a turbulent flow assembly located in the top end of the mixer; a mixing area used for gas conveying is arranged between the top of the mixer and the inner barrel, a dehumidification mechanism is arranged at the bottom of the mixer, and the mixing assembly is fixedly installed on the surface of the bottom plate. Effective mixing is achieved while gas conveying is achieved through the overflow holes, work of the turbulent flow assembly is achieved through gas flow in the gas conveying process, gas entering the inner barrel is diffused through the porous plate, impurities in the gas are removed before gas conveying, moisture in the gas is absorbed at the bottom of the mixer, and the gas conveying efficiency is improved. Impurities in the mixed gas can be removed after the gas is mixed, the purity of the mixed gas is ensured, the mixing quality is improved, and the subsequent energy utilization rate is increased.

The invention relates to an extruder for producing and processing polyamido alkyl acrylate, which is applied to the field of extruders and is characterized in that by arranging devices such as filling liquid, materials are fed into a feeding area through a hopper, are extruded from an exhaust area through a mixing area, and are kneaded and mixed when being conveyed to the position of the mixing area; at the moment, filling liquid is injected into the mixing area and gaps between the filling materials through a supplementing pump, the volatilization amount of the materials is reduced, meanwhile, the filling liquid can be heated through a heating pipe, when the filling liquid makes contact with the materials, the materials can be heated, the materials can be molten more uniformly, and the mixing efficiency is improved. When a mixture of the materials and the filling liquid moves to the position of the exhaust area, the materials are scattered, the filling liquid is volatilized under the action of high temperature and enters the exhaust box through the evaporation pipe, meanwhile, gas generated by the materials is filtered by the filter and discharged outwards, and finally the materials are discharged outwards through the material extrusion area.

The invention relates to the technical field of water treatment, in particular to a multi-stage reinforced mixing micro-vortex flocculation device. The multistage enhanced mixing micro-vortex flocculation device comprises a mixing unit and a flocculation unit which are arranged in series, the mixing unit comprises an outer cylinder, an inner cylinder, a flow guide assembly, a turbulent flow assembly, a mixing and stirring assembly and the like, a first mixing area is formed at the junction of a first containing cavity and a second containing cavity in the outer cylinder, and a second mixing area is formed in a third containing cavity. A third mixing area is formed between the inner wall of the first barrel and the outer wall of the inner barrel; the flocculation unit comprises a shell with a fourth accommodating cavity and at least one group of flocculation single pieces arranged in the fourth accommodating cavity. The multi-stage reinforced mixing micro-vortex flocculation device is compact and simple in overall structure, promotes mixed mass transfer, improves a flocculation reaction flow field, reinforces flocculation reaction power, can greatly improve the mixed flocculation reaction effect and efficiency, reduces the requirement of a coagulant, shortens the flocculation reaction time, and improves the precipitation performance of flocs.

The invention relates to the technical field of building material preparation, in particular to a preparation device for composite modified asphalt. Comprising a modified material premixing bin, an asphalt feeder and a main reaction system, a modified material feeding port and an asphalt feeding port are formed in the top of the main reaction system, the modified material premixing bin is communicated with the main reaction system through the modified material feeding port, and the asphalt feeder is communicated with the main reaction system through the asphalt feeding port; the main reaction system is of a multi-stage mixing reaction kettle structure and sequentially comprises a first-stage vertical stirring area, a second-stage high-speed shearing area and a third-stage static mixing area, and the interiors of the first-stage vertical stirring area, the second-stage high-speed shearing area and the third-stage static mixing area are communicated with one another; and through continuous design of multi-bin matching and multi-stage mixing, the problems of non-uniform mixing and low product performance of the composite modified asphalt are solved.

The present invention relates to an in-situ cleaning method based on conductivity signal and time mixing control, which comprises the following steps: step 1: flushing the pipeline with clean water for the first time; step 2: flushing the pipeline with alkaline cleaning liquid; step 3: judging whether the conductivity signal at the outlet reaches a threshold value when the alkaline cleaning liquid is introduced; step 4: continuously introducing alkaline cleaning liquid to flush the pipeline; step 5: flushing the pipeline with clean water for the second time to discharge the alkaline cleaning liquid; step 6: flushing the pipeline with acidic cleaning liquid; step 7: judging whether the conductivity signal at the outlet reaches a threshold value when the acidic cleaning liquid is introduced; step 8: continuously introducing acidic cleaning liquid; step 9: flushing with clean water for the third time until there is no residual cleaning liquid in the pipeline, and the final flushing is completed. The present invention sets the process of cleaning with different cleaning agents and flushing with clean water as a mixing zone, and proposes a method for selecting the time parameter of the time control of the mixing zone; and adopts the method of conductivity signal control to ensure that the cleaning agent concentration meets the standard to obtain a good cleaning effect.

The invention relates to the technical field of precipitation and sludge dewatering, in particular to a decontamination and dewatering land-saving integrated treatment method. When turbidity removal is taken as a treatment target, the system comprises a pretreatment and biological enhancement precipitation and dehydration integrated tank, a filter tank, a clean water tank, a drainage tank, a concentration tank and a pump room, when pollutants are removed as a treatment target, the device comprises a pretreatment tank, a biological enhancement precipitation and dehydration integrated tank, an ozone contact tank, an activated carbon adsorption tank, a filter tank, a clean water tank, a drainage tank, a concentration tank and a pump room, the biological enhancement precipitation and dehydration integrated pool comprises a main pool body, a sludge backflow dehydration machine room, a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe are matched, the main pool body comprises a mixing area, a lifting flocculation area, a transition area, a sludge-water separation area, a water outlet area, a sludge concentration area and a sludge storage area, and the main pool body and the sludge backflow dehydration machine room are jointly built to achieve precipitation and sludge dehydration functions. According to the invention, processes of efficient precipitation, sludge dewatering, biological enhancement and land-saving integration can be taken into consideration, so as to realize dual goals of deep purification of water quality and recycling of resources.

The invention relates to the technical field of coal gangue suspended state activation and calcination, in particular to a low-energy-consumption coal gangue suspended state activation and calcination process and system.The low-energy-consumption coal gangue suspended state activation and calcination system comprises a calcination furnace system and a quartic air pipe, and one end of the quartic air pipe is connected with the bottom of a calcination furnace of the calcination furnace system; a local mixing area is formed at the bottom of the calcining furnace, the other end of the calcining furnace is connected with a kiln door cover of an existing sintering system, and a valve is arranged on the quartic air pipe. The invention provides a low-energy-consumption coal gangue suspended state activation calcination process and system.

The present application provides a water treatment deep bed denitrification filter tank, which relates to the field of sewage treatment, including a tank body, wherein a quick mixing zone, a magnetic flocculation zone and a sedimentation zone are arranged inside the tank body, and further including: a mixing and stirring mechanism, which is arranged in the quick mixing zone for quickly mixing the water quality in the quick mixing zone; a flocculation stirring mechanism, which is arranged in the magnetic flocculation zone for mixing the water quality and flocculant in the magnetic flocculation zone; and a flow guide structure, which is arranged at the bottom of the magnetic flocculation zone and arranged around the flocculation stirring mechanism. The mixing and stirring mechanism of the present application can preliminarily mix the water quality, so as to facilitate better mixing with the water quality when the flocculant is added. After the flocculant is added, the second motor drives the second stirring shaft to move, thereby driving the impeller to move. The impeller stirs the water flow to form suction, thereby promoting the water flow to move upward along the flow guide structure, first aggregating toward the center in the flow guide structure and then diffusing toward the periphery. This flow mode can effectively promote more complete mixing of the flocculant and the water quality.

The utility model discloses an integrated coagulative precipitation air floatation all-in-one machine, including box body, partition plate and water outlet, also including collecting mechanism, mixing mechanism, air floatation mechanism and scraping mechanism, the middle part of box body is provided with partition plate, the surface of box body is provided with water outlet, the bottom of box body is provided with collecting mechanism, the bottom of box body is provided with scraping mechanism, mixing mechanism is provided with air floatation mechanism, scraping mechanism is provided with scraping mechanism. The middle part of the box body is connected with a mixing mechanism, the surface of the box body is connected with an air floatation mechanism, and the upper end of the box body is connected with a scraping mechanism. According to the integrated coagulating sedimentation and air floatation all-in-one machine provided by the utility model, the mixing mechanism is arranged, a flocculating agent is added into a mixing area formed by the partition plate and the interior of the box body, and two groups of mixing blades are arranged and are enabled to move up and down, so that sewage and the flocculating agent can be mixed more comprehensively; therefore, the mixing efficiency of the flocculating agent and the sewage is improved.

The utility model discloses an ACS anaerobic reactor for sewage treatment, and relates to the field of sewage treatment devices. The ACS anaerobic reactor for sewage treatment comprises a treatment tower and a separator at the top end, a water inlet pipe is arranged on one side of the bottom end of the treatment tower, a mixing area is arranged at the bottom end in the treatment tower, multi-component water distribution rods are arranged at the bottom end in the mixing area, water distribution barrels are arranged in one ends of the multi-component water distribution rods, and the water distribution barrels are located in the middle of the interior of the treatment tower. A rotating shaft is mounted at the top end of the water diversion barrel. According to the ACS anaerobic reactor for sewage treatment, one end of a water inlet pipe is connected with a connecting pipe from the lower part of the middle, and under the cooperation of a transmission gear and a driving gear, a plurality of groups of water distribution rods and mixing blades can be driven to rotate at the same time, so that wastewater is uniformly dispersed to each place and is stirred and mixed through the mixing blades; further, the wastewater and anaerobic particle treatment effect can be improved, and the treatment efficiency is improved.

A system for removing carbon dioxide from a gas includes: an injector; a CO2 lean gas outlet, the CO2 lean gas outlet being fluidly coupled to the injector; a fan, the fan being fluidly coupled to the CO2 lean gas outlet, the fan being rotatable to discharge CO2 lean gas from the CO2 lean gas outlet; and a capture solution tank. The ejector includes: a capture solution inlet operable to receive a lean capture solution; a gas inlet operable to receive a gas comprising carbon dioxide; a mixing zone configured to react the lean capture solution and a gas comprising carbon dioxide; and an ejector outlet operable to discharge a mixed fluid comprising the rich capture solution and a CO2 lean gas. The capture solution tank is fluidly coupled to the ejector outlet and to the CO2 lean gas outlet, and the capture solution tank is configured to collect the rich capture solution.

The invention relates to a sampling analysis method suitable for a composite water source circulating water system. According to the composite water source circulating water system, water from various different sources is mixed and recycled. The sampling analysis method comprises the step of setting sampling points at different positions of the circulating water system, wherein the positions cover a water source inlet, a mixing area, a key equipment inlet and outlet and the like. And the sampling accuracy and representativeness are ensured by adopting specific sampling tools and devices. The collected samples are subjected to multi-parameter analysis, including chemical oxygen demand (COD), biochemical oxygen demand (BOD), suspended solids (SS), hardness, pH value (pH) and other indexes of water quality. By establishing the data analysis model and comprehensively evaluating the quality condition of the circulating water, a scientific basis is provided for operation management, water quality regulation and control and equipment maintenance of the circulating water system, the operation efficiency of the composite water source circulating water system is effectively improved, the treatment cost is reduced, and the service life of equipment is prolonged.

A cooling system for cooling a component of an imaging system located in a scan room. The system includes inlet, outlet and return channels. A portion of warm outlet air from a component outlet flows in the return channel to provide warm recirculated air to a mixing zone in the inlet channel. A fan located in the inlet channel draws scan room air into the inlet channel to mix with the warm recirculated air in the mixing zone to form mixed air that flows over the component to cool the component and wherein the mixed air absorbs heat that warms the mixed air to form the warm outlet air. A valve located in the return channel restricts or allows additional warm recirculated air to flow to the mixing zone to mix with the scan room air to maintain a desired control temperature for the cooling system.

The utility model discloses a hypochlorous acid liquid mixing detection device which comprises a raw material feeding device, a mixing cavity device, a communicating pipeline and a detection cavity assembly, the raw material feeding device comprises a check valve, a straight joint I and a connecting pipe II, and one end of the check valve is fixedly connected with one end of the connecting pipe II. According to the utility model, the detection cavity assembly is independent of the mixing cavity and is connected with the mixing cavity through the slender communicating pipeline, so that a mixed solution can stably and slowly flow into the detection cavity, and the physical isolation of a mixing area and a detection area is realized; the direct impact of turbulent flow, bubbles or concentration fluctuation generated in the mixing process on the detection sensor is effectively avoided, the inlet and the outlet of the detection cavity are both designed to be thin and narrow channels and are located on the upper portion, the standing time of a solution in the detection cavity is prolonged, it is ensured that the detection cavity can be fully and stably filled with the solution, and the detection efficiency is improved. And a stable detection environment is provided for the sensor.

The invention belongs to the technical field of gas mixers, and particularly discloses an efficient and stable gas mixing device. The upper portion of a shell of the device slidably penetrates through an upper fixing frame, the lower portion of the shell is fixed, the shell is sequentially divided into a preheating area, a mixing area and a reaction area, and at least two gas inlet pipelines are arranged on the shell; the mixer is arranged in the mixing area, the upper and lower ends of the internal pipe are hermetically connected with the inner wall of the mixing area respectively, and a plurality of gas distribution plates for guiding gas flow distribution are sequentially arranged at two ends and inside the internal pipe; the thermocouple guide pipe sequentially penetrates through the upper fixing frame, the preheating area and the mixer. The gas inlet pipeline sequentially penetrates through the upper fixing frame and the preheating area and extends into the mixer, and the end, outside the shell, of the gas inlet pipeline is connected with a gas supply source through a gas flow meter; one end of the mixed gas outlet pipeline penetrates through the lower fixing frame and extends into the reaction area, and the other end is connected with an analytical instrument. The device has the characteristics of compact structure, high mixing efficiency, small concentration difference, few side reactions, good stability and strong adaptability.

A method of safely mixing a hydrocarbon with an oxidant is provided. The hydrocarbon and oxidant are saturated with a non-flammable liquid in pre-mix zones that are flooded with the non-flammable liquid and fluidly connected to a common mixing zone that is partially flooded with the non-flammable liquid. The saturated hydrocarbon and oxidant combine within the common mixing zone forming bubbles of a homogeneous gas mixture of hydrocarbon and oxidant, preferably in a ratio of hydrocarbon to oxidant that is outside of the flammability limit, that can exit the non-flammable liquid into a headspace where it can be retrieved for use in an oxidative reaction process such as oxidative dehydrogenation.

The pot cover assembly comprises a face cover and an inner cover arranged below the face cover, an exhaust cavity is formed between the inner cover and the face cover, the pot cover assembly further comprises an exhaust pipe arranged in the exhaust cavity, the inner cover is provided with an installation opening, the face cover is provided with an exhaust opening and an air vent, the exhaust pipe is installed at the installation opening, and the air vent is communicated with the air vent. A mixing area is arranged in the exhaust pipe, the exhaust pipe is provided with a communicating section communicating the ventilation opening and the mixing area, the exhaust pipe is provided with a positioning structure, and the inner cover is provided with a matching structure matched with the positioning structure so as to limit rotation of the exhaust pipe relative to the surface cover. In the exhaust process, outside cold air enters the mixing area of the exhaust pipe, the cold air and the high-temperature steam are mixed in the exhaust cavity, and bubbles can be rapidly broken to achieve bubble breaking and overflow prevention. The matching structure and the positioning structure are matched to reduce shaking of the exhaust pipe and limit rotation of the exhaust pipe, so that the relative positions of the exhaust pipe, especially the communicating section and the surface cover are kept fixed, and the possibility of air leakage is reduced.

The present invention discloses a method for collecting flue gas near the furnace to increase the SCR inlet temperature, which relates to the technical field of tail gas treatment. The method includes dividing flue ducts into a first flue duct and a second flue duct according to the historical information of the flue gas in each flue duct; obtaining the real-time information of the flue gas in each flue duct, and determining the respective fluctuation information corresponding to the first flue duct and the second flue duct based on the real-time information of the flue gas in each flue duct; planning the target inlet temperature of the SCR system for a future period according to the fluctuation information; mixing the first flue duct and the second flue duct in the mixing area, and determining whether to heat the mixing area based on the mixed flue gas information and the target inlet temperature of the SCR system; inputting the mixed flue gas into the SCR system, and obtaining the real-time SCR treatment information, and adjusting the heating amount of the mixing area according to the real-time SCR treatment information and the target inlet temperature of the SCR system for a future period. The adaptability of flue gas collection is improved, the desulfurization efficiency of the SCR system is ensured, and thus resources are saved.

The utility model provides a pilot plant test system for a quick-sand high-density sedimentation tank, and the pilot plant test system comprises an adjusting area which receives a fluid to be treated and can adjust the flow of the fluid in the adjusting area; the mixing area is in fluid communication with the adjusting area, and the fluid can be subjected to coagulation treatment in the mixing area; an adding zone in fluid communication with the mixing zone, in which a loading medium can be added to the fluid; the flocculation zone is communicated with the fluid in the feeding zone, and the fluid can be flocculated in the flocculation zone; the settling zone is in fluid communication with the flocculation zone, and the fluid can be subjected to settling treatment in the settling zone to form a sludge mixture; the sludge reflux device is in fluid communication with the settling zone at the bottom of the settling zone and is configured to be capable of treating the sludge mixture to form sludge and recovery fluid; the adding device is configured to be capable of respectively adding corresponding medicaments into the mixing area, the adding area and the flocculation area; and the buffer device is in fluid communication with the sludge reflux device to receive the recycled fluid and is configured to be capable of conveying the recycled fluid to the adding area.