5results about How to "Solve the clogging" patented technology

The invention discloses a combined air preheater, wherein a hot flue gas inlet duct is connected with a cold flue gas outlet duct via a flue gas side rotary air preheater, a medium-temperature flue gas outlet duct, a medium-temperature flue gas inlet duct and a heat release side of a tubular air preheater system; a cold air inlet duct is connected with a hot air outlet duct via a heat absorption side of the tubular air preheater system, a medium-temperature air outlet duct, a medium-temperature air inlet duct and an air side rotary air preheater. The preheater can effectively increase the exhaust gas temperature at the rotary air preheater outlet, solve the problem of the influence of ammonium bisulfate ash blocking on the rotary air preheater, and has high safety and stability.

The utility model discloses a rotary air pre-heater ring-dividing temperature rising system based on air heater zone management. The rotary air pre-heater ring-dividing temperature rising system comprises a rotor, a circumferential movable partition plate, a special-shaped static partition plate, a cold air inlet pipe and an air heater system. The circumferential movable partition plates are mounted on the lower end face of the rotor and divide the lower end face of the rotor into N concentric rings; the cold air inlet pipe is located below the lower end face of the rotor and at least covers one air branch bin. The special-shaped static partition plates are installed in the cold air inlet pipe, the cold air inlet pipe is divided into at least N independent ring-dividing air inlet pipes, and the ring-dividing air inlet pipes are located below the corresponding concentric rings. The air heater system comprises N partition air heaters, a heat source conveying pipe and N air heater partition air inlet valves, and the partition air heaters are installed in the corresponding branch ring air inlet pipes. One end of the heat source conveying pipe is connected with a heat source, the other end of the heat source conveying pipe is branched into N heat source branch pipes, the heat source branch pipes lead to the corresponding partition air heaters, and the air heater partition air inlet valves are installed on the corresponding heat source branch pipes. The device can solve the problems of blockage and corrosion.

This invention relates to the field of circulating fluidized bed boiler technology, specifically to an anti-clogging structure for the return feed port of a circulating fluidized bed boiler. This structure employs a high-pressure fluidizing air duct embedded in the return feed channel of the circulating fluidized bed boiler, with the port of the embedded section directly opposite the return feed port area where the return feed channel connects to the furnace of the circulating fluidized bed boiler. A high-pressure fluidizing air source is connected to one end of the high-pressure fluidizing air duct, providing fluidizing air that is blown from the port of the embedded section towards the return feed port area, preventing ash and coking in the return feed port area. By embedding a high-pressure fluidizing air duct at the end of the return feed channel, this invention effectively prevents abrupt changes in material flow characteristics and thermal imbalance at the return feed port during load variations, thus preventing the formation of a coke layer on the inner wall and ultimately causing blockage, which is beneficial for ensuring the normal operation of the boiler.

The present invention discloses a flue gas desulfurization purification device for a thermal power plant, which relates to the technical field related to waste gas treatment, including a waste heat exchanger, a bag filter, an electrostatic precipitator, an SCR reactor, an optical magnetic resonator, a desulfurization tower, a fan and a chimney, and the exhaust end of the waste heat exchanger is connected to the air inlet end of the bag filter. The present invention also discloses a flue gas desulfurization purification method for a thermal power plant, which includes the following steps: A: heat recovery, B: primary dust removal, C: secondary dust removal, D: denitration reaction, E: optical magnetic resonance, and F: wet desulfurization. The present invention uses two dust removals of bag filter and electrostatic filter in sequence, which greatly reduces the concentration of impurities in the flue gas, solves the ash blocking problem of subsequent equipment, reduces the harm of heavy metal ions, reduces the concentration of harmful substances in the flue gas, and thus reduces the purification pressure of subsequent equipment, directly accelerates the reaction rate of the SCR reactor, the optical magnetic resonator and the desulfurization tower, and improves the purification effect of the device.

The utility model discloses an efficient vibration well cementation tool, and particularly relates to the technical field of casing pipe well cementation engineering under oil and gas wells, the efficient vibration well cementation tool comprises a guide head, a shell, a supporting ring and a center rod, the supporting ring and the center rod are arranged in the shell, the supporting ring is fixed on the middle upper portion in the shell, and a liquid inlet hole is formed in the supporting ring. A plurality of sets of impellers distributed in the circumferential direction of the supporting ring at equal intervals are arranged below the liquid inlet hole, the impellers are connected with a transmission gear through a transmission shaft, the center rod is connected with a reversing gear matched with the transmission gear, the center rod is fixedly connected with the guide head, and the center rod is connected with a balance weight eccentric block so that the center rod can drive the guide head to generate vibration. The impeller rotates to provide a rotating power source for the center rod, and the counterweight eccentric block is matched with the center rod to rotate to drive the guide head to vibrate, so that clogging or coal briquettes and the like in a well are crushed or guided through high-frequency vibration, the clogging problem is solved, and the friction resistance and buckling problems are avoided; and stable and rapid running of the casing pipe is realized.