13results about How to "Improve denitrification efficiency" patented technology

The application discloses a kind of suitable for SCR denitration ammonia injection device and device, including ammonia injection pipe and the ammonia injection port of setting at ammonia injection pipe end, ammonia injection pipe includes ammonia main pipeline, branch pipeline and branch pipeline;Along ammonia main pipeline circumferential direction, equidistantly there are several branch pipelines;In branch pipeline, equidistantly and parallelly there are several vertical branch pipeline branch pipelines;Several branch pipelines are in the same plane, plane vertical branch pipeline;In branch pipeline, there is vertical plane ammonia injection port;Ammonia injection port gas outlet direction is same with ammonia main pipeline inner gas flow direction.The ammonia injection device suitable for SCR denitration designed in the application, including branch pipeline and branch pipeline, ammonia injection pipeline because each part branch pipe length is small, and the difference of branch pipeline diameter is not big, so it can reduce the flow resistance of ammonia in pipeline.

This utility model relates to the field of wastewater treatment technology and discloses a denitrification deep bed filter, including a filter structure. A diversion component and a water storage tank are installed at the top of the tank's interior. An inlet pipe is installed on the outer surface of the tank and on one side of the water storage tank. A drive component is installed on the outer surface of the tank and at the lower end of the inlet pipe. The cleaning component includes a rotating shaft and an external rod installed on the outer surface of the rotating shaft. The outer surface of the external rod is equipped with a carbon fiber brush. When cleaning the filter media, a motor operates, and the rotating shaft installed at one end of the connecting shaft also rotates, driving the external rod to rotate. This facilitates the rotation of the external rod within the filter media, expanding the cleaning range of the filter media. The carbon fiber brush contacts the filter media, and the rotating carbon fiber brush facilitates cleaning of the filter media, preventing impurities from adhering to the surface of the filter media and affecting the water treatment effect.

This utility model relates to an ammonia fuel regenerative combustion device, belonging to the field of energy conservation and emission reduction. It includes an ammonia fuel regenerative chamber and a combustion-supporting chamber, both connected to the furnace via connecting ports. The ammonia fuel regenerative chamber is equipped with a three-way reversing valve for introducing ammonia fuel and discharging flue gas. The ammonia fuel regenerative chamber contains an ammonia cracking regenerative body, a denitrification reducing agent injector, and a denitrification regenerative body. The porosity of both the ammonia cracking and denitrification regenerative bodies gradually decreases along the flue gas outflow (ammonia inflow) direction. The combustion-supporting chamber has a combustion-supporting gas inlet. The angle of the denitrification reducing agent injector is adjustable. An ammonia cracking catalyst is mounted on the ceramic skeleton of the ammonia cracking regenerative body. An SCR reduction catalyst is mounted on the ceramic skeleton of the denitrification regenerative body. This utility model can improve flame stability, increase ammonia cracking efficiency and denitrification efficiency, and reduce NO₂ levels in the combustion device. x Emissions will be reduced to achieve zero carbon emissions from the heating furnace.

This utility model relates to the field of wastewater treatment technology and discloses a biochemical treatment device for high COD and high ammonia nitrogen wastewater. It includes an anaerobic tank, a primary A tank, a primary O tank, a secondary A tank, a secondary O tank, and a UF device connected in sequence. A water seal trough is installed at the outlet of the anaerobic tank, and the water seal trough is connected to the primary A tank via a pipe. A gas stirring device is installed at the bottom of the sealed primary A tank, and the gas stirring device is connected to the outlet of a stirring blower. The top of the primary A tank is sealed, and the top of the sealed primary A tank is connected to the inlet of the stirring blower via a pipe. In this utility model, biogas generated by anaerobic digestion is introduced as the carbon source for denitrification in the sealed secondary A tank, improving the utilization rate of carbon sources within the wastewater and saving the cost of external carbon source supplementation. The large amount of heat generated by aerobic biochemical treatment is used to heat the anaerobic circulating influent through a heat exchanger, increasing the temperature of the anaerobic tank while simultaneously decreasing the temperature of the aerobic tank, achieving energy reuse and enabling the system to achieve a "cost reduction and efficiency improvement" effect.

This invention relates to the field of flue gas purification technology, and discloses a denitrification system and method. The system includes a flue gas duct, a recovery device, a temperature control device, and a denitrification device, with the flue gas duct connected sequentially to each device. The flue gas duct is used to introduce the flue gas to be denitrated; the recovery device is used to recover moisture from the flue gas; the temperature control device is used to regulate the temperature of the flue gas; and the denitrification device is used to separate nitrogen oxides from the flue gas. This invention removes moisture from the flue gas beforehand through the recovery device, avoiding the adverse effects of moisture on the denitrification catalyst; the temperature control device regulates the flue gas to a suitable reaction temperature, improving denitrification efficiency; and the denitrification device catalytically reduces nitrogen oxides, achieving efficient and stable denitrification treatment. The entire system has a compact structure and a reasonable process, effectively avoiding ammonia escape and equipment blockage problems in traditional ammonia-based denitrification methods while achieving efficient denitrification, offering advantages such as energy saving, environmental protection, and stable operation.

The application discloses a selective catalytic reduction flue gas heating device, which comprises a flue gas transmission main line and a combustion furnace chamber, the output end of the combustion furnace chamber is inserted into the flue gas transmission main line, a furnace chamber collector and a burner are arranged in the combustion furnace chamber, a control valve is arranged at the input end of the flue gas transmission main line, a main line collector is arranged in the flue gas transmission main line, and the heating device further comprises a collection system, a data analysis system, a control module and a heater. The selective catalytic reduction injection pipe is directly connected to the obliquely-inserted combustion furnace chamber, is used for direct combustion of the burner, the high-temperature flue gas generated by combustion is mixed with the flue gas of the main line of the internal combustion engine to improve the flue gas temperature of the internal combustion engine, the prepared flue gas heating device is compact in structure, convenient to arrange, simple in preparation process, low in cost, convenient to maintain, can adjust the power of the burner according to different exhaust pipe diameters, and is high in thermal efficiency and economic benefits.

The utility model relates to flue gas treatment field of atmospheric pollution control industry, concretely relates to a desulfurization dust removal denitration integrated equipment. The desulfurization dust removal denitration integrated equipment includes: support separation structure, which separates desulfurization dust removal denitration integrated equipment into three layers of upper, middle and lower in vertical direction, separates into middle area and peripheral area in horizontal direction, denitration chamber is arranged in middle layer middle area, exhaust port is arranged in middle layer middle area, below denitration chamber, air inlet is arranged in lower layer middle area, below exhaust port, N desulfurization filter chambers are symmetrically arranged in middle layer peripheral area, peripheral of denitration chamber and exhaust port, S ash bucket is arranged in lower layer peripheral area, upper box gas chamber is arranged in upper layer area, and N desulfurization filter chambers of the peripheral area and denitration chamber of middle area are communicated. The utility model discloses desulfurization dust removal denitration integrated equipment, and the land area is small, and the investment is saved.

This invention provides a flue gas denitrification method in which flue gas is contacted with a corrugated plate catalyst in the presence of ammonia for denitrification treatment. The corrugated plate catalyst includes a support and active components, wherein the active components include oxides of cerium, vanadium, and tungsten. The mass ratio of cerium oxide to the support is (5-20):100, the mass ratio of vanadium oxide to the support is (0.5-10):100, and the mass ratio of tungsten oxide to the support is (1-12):100. This method has the advantages of high denitrification efficiency and good stability, effectively reducing pollutant emissions.

The utility model discloses a marine SCR denitration reactor relates to marine exhaust gas treatment equipment technical field, including the reaction box, one end of reaction box is installed and penetrates the air inlet pipe, the outer wall of air inlet pipe is installed with the injection device, and the part of injection device inserts in the inside of air inlet pipe, the utility model discloses, through setting two groups of porous distribution board in the inside of reaction box, makes the exhaust gas even distribution through porous distribution board, through setting catalyst device, under the cooperation of multilayer catalyst module and two group vertical concave seat, the multilayer catalytic module is removed from the inside of reaction box conveniently, and the convenient installation, dismount and replacement, and the certain interval is left between catalyst module in multilayer catalyst module, to guarantee that exhaust gas can fully contact catalyst reaction, and under the cooperation of injection device and static mixer, can greatly improve the efficiency of denitration reaction.

This invention discloses a high-temperature, high-dust-content flue gas purification device, relating to the field of flue gas purification technology. The device includes an adjustable purification structure comprising multiple ceramic filter elements. SCR catalyst components are coated on the surface of each ceramic filter element. A swirling ammonia injection grille is installed at the inlet end of each ceramic filter element. An attitude adjustment mechanism is connected to the purification structure. A PLC control system is electrically connected to the attitude adjustment mechanism, which controls the ceramic filter elements of the purification structure to switch between vertical, inclined, and parallel settings. In the vertical setting, flue gas passes through the filter element in a straight line from top to bottom or bottom to top. In the inclined setting, flue gas passes through obliquely, forming a "Z"-shaped path. In the horizontal setting, flue gas flows laterally through the filter element, and particulate matter is deposited downwards under gravity. This invention solves the problem of low removal efficiency of fine particulate matter, achieving highly efficient purification of high-temperature, high-dust-content flue gas, and is particularly suitable for treating high-emission flue gas under complex operating conditions.

This utility model discloses a high-efficiency SNCR denitrification device for a waste incinerator, including a reactor body. The reactor body has flue gas channels at both ends, with an inlet and an outlet at each end. A fixed frame is mounted on the top of the reactor body, and a spray assembly is mounted on the fixed frame. The spray assembly includes a mounting plate, a drive source, an output shaft, a moving guide rail, a support plate, spray pipes, and multiple sets of symmetrically arranged spray heads. The output shaft is connected to a deflection plate, which is connected to a connecting rod. A contact wheel is rotatably mounted on the connecting rod, and the contact wheel can contact one side of the support plate. The drive source drives the deflection plate to rotate, which in turn pushes the support plate along the moving guide rail via the contact wheel, causing the spray heads to move and spray in the area above the furnace, improving the uniformity and utilization rate of the denitrification agent coverage.

This invention discloses a wet flue gas denitrification enhancer and its preparation method, relating to the field of flue gas denitrification technology. The wet flue gas denitrification enhancer comprises the following raw materials in parts by weight: organic acid: 5-12 parts, metal catalyst: 1-5 parts, pH buffer: 3-10 parts, surfactant: 0.5-2 parts, and deionized water: 20-40 parts. The flue gas denitrification enhancer prepared by this invention exhibits good denitrification efficiency.