10 results about "Boiler blowdown" patented technology

This invention relates to a novel method for controlling the silicon content in boiler water, belonging to the field of water chemistry technology for thermal power plants. The method dynamically determines the allowable silicon content in the boiler water under the current operating conditions based on the real-time boiler operating pressure and a preset negative correlation between boiler pressure and the allowable silicon content in the boiler water. The measured silicon content in the boiler water is compared with this dynamic allowable value, and boiler blowdown is only performed when the measured value exceeds the allowable value. This invention utilizes the physical characteristic that the solubility and carry-over coefficient of silicon in boiler water by saturated steam decreases with decreasing boiler pressure. Under low-load conditions, the control index for silicon content in boiler water is reasonably relaxed, thereby significantly reducing the frequency and amount of boiler blowdown while ensuring steam quality and turbine safe operation. This reduces boiler heat loss and demineralized water consumption, improving boiler thermal efficiency and overall unit economy.

The utility model relates to the technical field of waste incineration, in particular to a boiler blow-off heat energy utilization system which comprises a secondary combustion chamber, a heater communicated with the secondary combustion chamber and an air blower installed at an air inlet of the heater. One end of a heating pipeline of the heater is communicated with a boiler sewage pipe, the other end of the heating pipeline of the heater is communicated into the heat exchanger, an output pipeline of the heat exchanger is communicated with a cooling assembly, and one end of a heat exchange pipeline of the heat exchanger is communicated with the water tank through a water pump. According to the utility model, the secondary combustion chamber is used for heating air entering the secondary combustion chamber, and the cooled sewage is introduced into the heat exchanger after heating is completed, so that tap water pumped into the boiler is heated, the boiler sewage is secondarily heated and utilized, and the maximum utilization of heat energy can be realized; the boiler sewage treatment device can be used for cooling and deacidifying discharged boiler sewage so as to meet the requirement of environmental protection.

This utility model discloses a defogging device for a waste heat boiler blowdown expansion container, including a blowdown expansion container for receiving wastewater. A steam inlet pipe is connected to the left side of the blowdown expansion container, and a first pipe for conveying wastewater is connected to the steam inlet pipe. The end of the first pipe is connected to a steam drum for fixed and continuous discharge. A second pipe for conveying wastewater is connected to the steam inlet pipe, and a boiler header is connected to the end of the second pipe. A condensate pipe is connected to the bottom of the blowdown expansion container, and a regulating valve for controlling the liquid level in the blowdown expansion container is installed on the condensate pipe. A level gauge for monitoring the liquid level in the blowdown expansion container is connected to the right side of the blowdown expansion container. A steam exhaust pipe is connected to the top of the blowdown expansion container, and the end of the steam exhaust pipe is connected to the defogging device body.

This utility model relates to the field of boiler blowdown technology and discloses a boiler blowdown waste heat recovery device, including a blowdown expansion container. The blowdown expansion container is connected to a liquid heat exchanger and a gas heat exchanger through a pipeline system. The gas heat exchanger and the liquid heat exchanger are respectively connected to a secondary heat exchange cylinder. The secondary heat exchange cylinder is an inverted conical structure with a spirally coiled exhaust pipe inside. The inlet end of the exhaust pipe is located at the lower part of the secondary heat exchange cylinder. The outlet end of the exhaust pipe is connected to a guide ring located at the upper part of the interior of the secondary heat exchange cylinder. The inner ring of the guide ring has guide nozzles along its circumference. The water inlet on the secondary heat exchange cylinder is located at the upper part of the guide ring. This utility model can not only realize the smooth heating of water injected into the secondary heat exchange cylinder by the exhaust pipe, but also realize the transport and dissolution of hot gas into the water, avoiding the phenomenon of water entering the exhaust pipe and causing corrosion of the exhaust pipe, thus ensuring heat exchange efficiency and heat exchange effect.

This utility model discloses a heating and energy-saving structure for boiler blowdown, relating to the field of energy-saving structure technology. It includes an insulated tank and a heat exchanger. The inner wall of the heat exchanger is equipped with a water supply coil. A discharge pipe is connected below the flow-concentrating hood. A slide frame is slidably connected to the inner wall of the slide rail. A scraper and a brush are connected below the mounting plate. A pull rod is connected to one side of the slide frame, and the outer surface of the pull rod is slidably connected to the inner wall of the heat exchanger. A cover plate is detachably installed on one side of the sealing cover. This utility model has a reasonable design structure. Through the cooperation between the pull rod, brush, and scraper, pulling the pull rod provides power for the movement of the brush and scraper. Simultaneously, the scraper and brush move, cleaning away the dirt deposited at the bottom of the heat exchanger, thus achieving the purpose of cleaning the heat exchanger, solving the problem of dirt accumulation at the bottom of the heat exchanger, and improving the cleanliness of the inside of the heat exchanger.

The application discloses a boiler flue gas heat comprehensive utilization white smoke removing device and method, belongs to the boiler and white smoke removing technical field, including white smoke removing system, white smoke removing system and refrigeration system, air cooling system and reheating system are connected, white smoke removing system includes boiler device, boiler device and air preheater intercommunication, air preheater and bag-type dust collector intercommunication, bag-type dust collector and induced draft fan intercommunication, induced draft fan and desulfurizing tower intercommunication, desulfurizing tower and chimney intercommunication.The application adopts the above-mentioned boiler flue gas heat comprehensive utilization white smoke removing device and method, through air cooling and cold water cooling two ways, the water vapor in flue gas is condensed down;firstly, the flue gas after desulfurizing tower is warmed by circulating water backwater, then the boiler blowdown water with higher temperature is used;the hot air after secondary warming by air condenser and air preheater is sent into the air supply fan inlet, which can improve the air supply fan inlet air temperature.

The utility model relates to the technical field of gas turbine waste heat boiler blowdown drainage, concretely is a kind of fixed tank system, it can both increase water recovery, and can improve cooling effect, it includes vertical fixed tank, the side of vertical fixed tank is provided with drainage inlet pipe, drainage outlet pipe, it is characterized in that, still include temperature reducing water inlet main pipeline, temperature reducing water inlet main pipeline is divided into temperature reducing water branch pipe one and temperature reducing water branch pipe two, temperature reducing water branch pipe one is connected to the temperature reducing water pipe of being set in the inside of vertical fixed tank and is penetrated through vertical fixed tank, spray hole is set on temperature reducing water pipe, temperature reducing water branch pipe two is connected to the drainage outlet pipe.

This utility model discloses a high-efficiency series-connected boiler blowdown valve, relating to the field of valve technology. It includes a valve body with a first valve stem channel and a second valve stem channel within it. A flow channel pipe connects the first and second valve stem channels. A first valve disc is slidably disposed within the first valve stem channel, and a first valve stem is disposed within the first valve stem channel. The first valve stem is fixedly connected to the first valve stem. A second valve disc is slidably disposed within the second valve stem channel, and a second valve stem is disposed within the second valve stem channel. The second valve disc is slidably connected to the second valve stem. An upward-opening groove is provided on the second valve disc, and the second valve stem is slidably disposed within the groove. The design employs a series connection of a stop valve and a stop check valve, effectively reducing the erosion of the valve body components by high-pressure gas.