8results about How to "Large emissions" patented technology

This invention, entitled "Exhaust Gas Turbocharger for Internal Combustion Engines," relates to an exhaust gas turbocharger used in internal combustion engines. It primarily addresses the problems of current turbochargers, such as low impeller speeds, small exhaust volume, and exhaust gas flow limited to a predetermined path within the exhaust pipe. The turbocharger of this invention comprises two turbines connected by a shaft. An exhaust gas inlet is located on the exhaust turbine, and an air outlet is located on the intake turbine. Its key feature is that the impellers of the exhaust and intake turbines are centrifugal exhaust gas impellers and centrifugal air impellers, respectively. The exhaust gas discharge pipe connected to the intake is a circular pipe with the same inner diameter, and an exhaust gas baffle is installed between the outlet of the exhaust gas discharge pipe and the exhaust gas inlet. When the internal combustion engine operates at maximum power, the impeller speed is high, the exhaust gas inlet is equipped with an exhaust gas baffle, and the area of ​​the exhaust pipe is the same as the area of ​​the exhaust gas inlet, resulting in a larger exhaust gas discharge area and increased exhaust gas volume.

The application discloses a double-fan-leaf suction-discharge structure of a centrifugal fan, and belongs to the technical field of centrifugal fans. The double-fan-leaf suction-discharge structure comprises an impeller, a volute, an air inlet, an air outlet, a motor, a connecting shaft, a bearing and a flow guide channel. The impeller is designed in a double-fan-leaf mode and comprises centrifugal blades and axial-flow blades. The impeller is located in the interior of the volute, and the interior of the volute is further provided with the flow guide channel. The application has novel design and ingenious device. The double-fan-leaf suction-discharge structure is arranged in the interior of the impeller shell and comprises centrifugal blades and axial-flow blades. The external gas is guided to enter the gap between the centrifugal blades in an orderly manner, the axial air suction capacity is improved, the phenomenon that the air pushed by the centrifugal blades overflows along the axial direction is inhibited, and thus the generation of backflow is reduced. The flow guide channel is arranged, the main channel changes from narrow to wide from the air inlet to the air outlet, the entering gas can be stably transported from the air inlet to the air outlet under the action of the main channel, the gas discharge efficiency is improved, and the discharge capacity is increased.

According to the technical scheme, the water quality purification equipment is characterized by comprising a main body, four supporting legs are fixedly installed at the bottom of the main body, a chemical reaction box is fixedly installed at the top of the main body, a cover plate is arranged at the top of the chemical reaction box, an inserting hole is formed in the top of the cover plate, and a water inlet is formed in the top of the inserting hole; a rectangular mounting hole is formed in the top of the cover plate; the intercepting assembly is arranged at the top of the cover plate and used for intercepting impurities, the sewage reacts with chemical agents in the chemical reaction box, the property or state of pollutants in the sewage is changed through chemical reaction, the cover plate prevents the impurities from entering the chemical reaction box, and the inserting holes provide stable rotating supporting points for the connecting rods; the rectangular mounting hole provides a mounting position for the tank body of the interception assembly, and the interception assembly intercepts impurities in sewage before the sewage enters the chemical reaction tank, so that the sewage purification effect is improved, the discharge amount of purified water is large, the discharge amount of sewage is small, and the purpose of saving water is achieved.

The application discloses a gas circulation reaction control method based on pressure change rate feedforward and related devices, and relates to the technical field of automatic control of chemical processes, and comprises the following steps: acquiring pressure data in real time and calculating a pressure change rate, when the absolute value of the pressure change rate meets a preset trigger condition, determining a target opening degree adjustment amount of a pressure regulating mechanism according to a numerical interval where the pressure change rate is located, and generating a feedforward control instruction, the lead perception of the pressure change trend replaces the dependence of traditional PID feedback control on deviation accumulation, significantly improves the inherent response lag characteristic of the traditional control mode, and effectively reduces the triggering of the equipment surge protection. Meanwhile, when the negative downward pressure change rate meets a preset sudden drop condition, a decoupling compensation instruction is generated to control the gas discharge mechanism to increase the gas discharge amount, thereby realizing the cooperative linkage of pressure regulation and gas discharge, and optimizing the pressure stability of the system under severe fluctuation conditions.

The invention relates to the technical field of air separation equipment, and in particular to a method for optimizing a molecular air separation main condenser based on N2O, comprising: calculating a standard content of N2O according to the purity of liquid oxygen in the main condenser; comparing the standard content with the N2O content to judge whether the liquid oxygen is sufficiently discharged; calculating a solid precipitation content value of N2O according to the pressure in the main condenser and the temperature of the liquid oxygen; drawing a N2O content change curve, determining a change trend of the N2O content, and judging a risk level of solid precipitation of N2O; arranging an auxiliary condenser to discharge N2O in the liquid oxygen of the main condenser; adjusting a condenser cleaning cycle according to an integral value of the N2O content curve and the solid precipitation content; monitoring the N2O content in real time and adjusting operating parameters of an air separation device, and reducing the accumulation of N2O and the solid precipitation risk by formulating regular condenser cleaning and N2O emission strategies to prevent N2O from reaching a solidification point.

This invention provides an adjustable liquid distributor, including a distribution plate with a circular structure. The distribution plate contains a stabilizing tank and a diversion tank, which are staggered along the circumference of the plate. A liquid gathering tank is located in the center of the distribution plate. An inlet pipe is located at the upper end of the distribution plate and is fixedly connected to the surface of the plate via a pipe support. An overflow tank is located between the stabilizing tank and the diversion tank. Two outlet holes are located at the bottom of the distribution plate. This invention, by incorporating the stabilizing tank, diversion tank, and gathering tank, effectively improves the uniformity of liquid distribution and avoids efficiency reduction caused by a fixed spray range. Furthermore, by designing outlet holes one and two at the bottom of the distribution plate and using a dispersing ring, the liquid dispersion effect can be further optimized, reducing uneven heat and mass transfer during the dripping process.

The present invention discloses a method and a separation system for removing ammonia from dry gas. The method comprises: S1, the raw dry gas is washed with water to remove ammonia impurities through a water washing tower, a deammoniation purified dry gas is obtained at the top of the tower, and ammonia-containing water washing liquid is obtained at the bottom of the tower; S2, the ammonia-containing water washing liquid is stripped by a membrane extraction component equipped with a modified hollow fiber membrane, wherein the ammonia-containing water washing liquid and the ammonia stripping lean liquid flow through the inner cavity and outer wall of the modified hollow fiber membrane respectively to obtain a deammoniation water washing liquid and an ammonia stripping rich liquid; S3, the ammonia stripping rich liquid is degraded by an electro-oxidation method to obtain a regenerated ammonia stripping lean liquid. The method of the present invention can continuously and stably remove ammonia impurities that affect the activity of ethylbenzene alkylation catalyst, reduce the influence of ammonia impurities on the acid active center of the catalyst, and can be used in the industrial production of dry gas to ethylbenzene device.