12results about How to "Guaranteed denitrification efficiency" patented technology

The invention relates to the technical field of flue gas purification, in particular to flue gas desulfurization, denitrification and dust removal separation equipment which comprises a separation mechanism, a laminar flow reactor, a mixed flow impeller and a desulfurization reactor. The separation mechanism is connected with the air inlet pipeline; the laminar flow reactor is connected with the separation mechanism; the mixed flow impeller is connected between the separation mechanism and the laminar flow reactor; the desulfurization reactor is connected with the laminar flow reactor; oily particles are preliminarily separated through centrifugal force, after flue gas internally rotates and ascends, a secondary filter screen is driven by the ascending force of the flue gas to shake at high frequency to secondarily filter the oily particles, meanwhile, the oily particles are separated again through the internal rotation force of the flue gas, and the flue gas and ammonia gas are fully mixed and pre-distributed through a mixed flow impeller, so that the denitration efficiency is improved; the problems that the catalyst is damaged due to the fact that oily particles in flue gas cannot be effectively filtered, and the denitration efficiency is reduced due to non-uniform distribution when the flue gas reaches a fluidized bed are solved.

The utility model relates to an SNCR (selective non-catalytic reduction) and SCR (selective catalytic reduction) collaborative denitration ultra-low emission system for a coal-fired boiler. The system comprises an SNCR denitration unit, a primary economizer, an airflow uniform distribution device, an SCR denitration unit and a secondary economizer, the SNCR denitration unit consists of an ammonia water / urea solution tank, a delivery pump and a spray gun; and the SCR denitration unit comprises an SCR layer. The system disclosed by the utility model is simple and reasonable in structure, reliable in operation, low in investment and operation cost, long in service life and free of secondary pollution, and the NOx-containing flue gas of the coal-fired boiler can be efficiently denitrated and purified.

The utility model discloses industrial wastewater denitrification equipment, and belongs to the technical field of industrial wastewater treatment. Comprising a treatment tank, a sewage pipe is connected to the side of the treatment tank, and a denitrification device is connected in the treatment tank. And the lower end of the motor is fixedly connected with the rotating rod. The multiphase separation diversion trench is fixedly connected with the inner side of the treatment tank, the upper end of the multiphase separation diversion trench is connected with the separation membrane, and the middle of the separation membrane is connected with the connecting plate. The connecting rod is located between the connecting plate and the treatment tank, and the rotating rod penetrates through the connecting plate and is rotationally connected with the connecting plate. The upper part of the treatment tank is connected with a gas outlet, and the side surface of the treatment tank is connected with a nitrogen pipe. The side surface of the treatment tank is connected with an air inlet and the bottom of the treatment tank is connected with a water outlet. The utility model aims to solve the problems that active microorganisms in a biochemical system are easy to dehydrate and inactivate, the denitrification effect is extremely poor, and residual gas generated by decomposition cannot be carefully treated.

The invention provides an integrated serial SCR (Selective Catalytic Reduction) denitration system, which belongs to the technical field of waste gas treatment and comprises a denitration assembly, an ammonia supply assembly, a chimney and a booster fan, the denitration assembly comprises a tower body, and a first-stage grid, a first-stage reactor, a second-stage grid and a second-stage reactor which are arranged in the tower body and are sequentially arranged from bottom to top; the ammonia supply assembly comprises an ammonia water tank and two ammonia water evaporators, the two ammonia water evaporators are both communicated with the ammonia water tank, the ammonia water evaporators are used for adjusting the discharge amount of ammonia gas, each ammonia water evaporator is provided with an ammonia supply pipeline, one of the ammonia supply pipelines extends into the tower body and is located below the first-stage grid, and the other ammonia supply pipeline extends into the tower body and is located below the second-stage grid. The other ammonia supply pipeline extends into the tower body and is positioned between the primary reactor and the secondary grating; the chimney is communicated with the smoke outlet; and the booster fan is arranged between the chimney and the smoke outlet.

This utility model relates to the technical field of SCR denitrification equipment, specifically a detachable catalyst SCR reactor, including a main component. The main component includes a shell, an air inlet and an air outlet located at both ends of the shell, and a cover hinged to the top side of the shell. A single-unit disassembly port is provided inside the cover, and a sealing disassembly assembly is installed inside the single-unit disassembly port. A catalyst assembly is installed inside the shell. This utility model, through its single-unit disassembly port and sliding catalyst layer, requires only 30-60 minutes for a single replacement, shortening the time by more than 80% compared to traditional overall disassembly. It also eliminates the need for a complete production line shutdown, requiring only a pause of the single catalyst unit. Furthermore, this utility model, through a double sealing ring and spring reset structure, ensures a reactor leakage rate of ≤0.5%, far superior to traditional equipment, guaranteeing denitrification efficiency. This utility model also eliminates the need for multiple operators for single-unit operation and avoids seal aging caused by repeated opening and closing of the cover.

The utility model discloses a deep denitrification device for wastewater in an electronic industrial park, which comprises a reactor, a filler area is arranged in the reactor, and the filler area is formed by sequentially and alternately arranging sulfur filler layers and zero-valent iron filler layers; a bearing area is arranged below the filling area; a cylindrical graphite anode penetrating through the filler area is also arranged in the reactor; the stainless steel side wall of the reactor serves as a cathode, and the cathode and the anode are connected with an external power source through wires respectively. According to the deep denitrification device disclosed by the utility model, denitrification is carried out in a sulfur-iron-hydrogen autotrophic denitrification synergistic manner, so that the problems that the effluent is slightly acidic and slightly alkaline and the content of sulfate radicals in the effluent is high can be solved, and the denitrification reaction rate of microbial strains can be effectively improved.

The utility model relates to the technical field of boiler denitration, in particular to an ammonia supply adjusting device which comprises a purification seat, a twitching groove is formed in the back of the side face of the purification seat, purification pipelines are fixedly connected to the upper end and the lower end of the purification seat, a gas uniformizing pipe is arranged in the center of the interior of each purification pipeline, and a gas conveying pipe is arranged in the center of the interior of each gas uniformizing pipe. And a first drawing frame is movably connected to the interior of the purification seat, and a second drawing frame is arranged at one end of the first drawing frame. Through the arrangement of the purification base, the drawing groove, the purification pipeline, the first drawing frame, the spraying grid and the adjusting shifting block, the device can improve the ammonia water atomization effect and the ammonia water utilization rate by optimizing the hole diameter of the spray head of the ammonia water spray gun, and the device is convenient to use in the actual use process. A worker can make the first drawing frame integrally connected into a drawing groove of the purification base in a butt joint mode, and then the electric push rods at the upper ends and the lower ends of the two sides of the purification base are started to conduct jacking adjustment operation on the adjusting shifting blocks on the two sides of the spraying grid.

The utility model discloses a zoned ozone denitration reactor, which comprises a transversely arranged shell, a reactor inlet and a reactor outlet, the reactor inlet and the reactor outlet are positioned on two sides of the shell, the shell is cylindrical, at least two sections of oxidation zones are arranged in the shell, and a plurality of ozone spray guns are uniformly arranged on the shell corresponding to each section of oxidation zone along the radial direction. And a turbulent flow device for mixing flue gas and ozone to generate turbulent flow is arranged between every two sections of oxidation subareas. According to the utility model, the problem of low efficiency of NOx oxidation by ozone can be solved, and the problems of overflow waste of ozone, poor mixing effect of ozone and flue gas and long mixing stroke space can be avoided through the design of the ozone spray gun and the turbulent flow device.

The present invention discloses a partitioned precise ammonia injection system based on a big data model, and belongs to the technical field of environmental protection and energy conservation of coal-fired power generation. The present invention solves the problem of inaccurate and unstable operation of the existing denitrification system, by establishing a steady-state precise ammonia injection data model under different working conditions, and performing feedback adjustment of precise ammonia injection, the adjusted precise ammonia injection data is recorded, collected and forms a new steady-state data model; a discrete limiting coefficient is introduced, and when the opening of the ammonia injection regulating valve is away from the big data model and reaches the value specified by the discrete limiting coefficient, the big data model that meets the current operating conditions is re-called; the influence of the linear adjustment error of the traditional partitioned ammonia injection and the influence of the hysteresis of the denitrification measuring instrument are effectively reduced, and the response speed and accuracy of the precise ammonia injection system are improved under the premise of ensuring the denitrification efficiency and reducing ammonia escape. The reasonable use of the big data model can still ensure the stable and efficient operation of the denitrification system under the condition of large fluctuations in working conditions.

The invention relates to the technical field of sewage denitrification, in particular to a rotational flow fluidization deep denitrification device and a process thereof, the rotational flow fluidization deep denitrification device comprises a main reaction drum, a first water inlet pipe, a second water inlet pipe and a three-phase separation structure; a sulfur autotrophic filler is arranged in the main reaction drum; the first water inlet pipe and the second water inlet pipe are arranged at the lower end of the main reaction drum and used for communicating the inside and the outside of the main reaction drum, the first water inlet pipe and the second water inlet pipe are arranged at intervals in the circumferential direction of the main reaction drum, and the axes of the first water inlet pipe and the second water inlet pipe are arranged in parallel; the second water inlet pipe is used for inputting clear water into the main reaction drum; the three-phase separation structure is arranged in the main reaction barrel and is used for separating sulfur autotrophic filler, water and gas. When the rotational flow fluidization deep denitrification device is used, blockage is avoided, the denitrification efficiency is improved, the occupied area is reduced, and the stability is higher.

The application discloses a thermal power plant SCR denitration system ammonia injection grid self-adaptive control method and system, including ammonia injection grid module, thermal impedance monitoring module, sound wave tomography module, differential pressure monitoring module, sound wave cleaning module and central control module, the central control module identifies the ash branch according to the temperature response curve collected by the thermal impedance monitoring module, according to the sound wave signal collected by the sound wave tomography module, the ammonia concentration distribution field and the temperature distribution field are reconstructed, the differential pressure signal collected by the differential pressure monitoring module is extracted spectrum characteristics, the influence of the ash branch on the injection uniformity or the catalyst layer stability is verified comprehensively, and the cleaning target branch is determined. The application realizes the on-line perception of the ammonia injection branch state, the visual monitoring of the injection uniformity, the early diagnosis of the catalyst layer flow instability, the thermal-acoustic resonance self-cleaning and the closed-loop intelligent control of the predictive maintenance, effectively improves the denitration efficiency, reduces the ammonia escape and prolongs the equipment life.

The utility model discloses an SNCR (selective non-catalytic reduction) denitration deep efficiency-improving system for a circulating fluidized bed. Belongs to the technical field of SNCR denitration. According to the technical key points, the device comprises a plurality of cyclone separators, a reducing agent spray gun is arranged at the input end of each cyclone separator, each reducing agent spray gun is connected with a reducing agent supply unit, a nitrogen oxide measuring unit is arranged at the output end of each cyclone separator, and each nitrogen oxide measuring unit is in circuit connection with a nitrogen oxide control cabinet; the reducing agent supply unit is in circuit connection with the nitric oxide control cabinet; the utility model aims to provide the SNCR denitration deep efficiency improving system for the circulating fluidized bed, which is compact in structure, accurate in measurement and short in time lag; the method is used for circulating fluidized bed denitration.