OPERATING METHOD FOR THE BOILER INSTALLATION Russian patent published in 2022 - IPC F22B33/18 

FIELD: energy.

SUBSTANCE: invention relates to energy and can be used in boiler plants running on natural gas. A method for operation of a boiler plant is proposed, according to which the main flow of water vapor produced in the boiler is sent to a shell-and-tube heat exchanger for heating network water to a temperature of 110-120°C, the network water heated in the shell-and-tube heat exchanger is sent to the supply pipeline of the heat supply system, and the condensate formed in the shell-and-tube heat exchanger water vapor is discharged into a condensate collection tank, part of the water vapor produced in the boiler is fed into the deaerator for degassing additional water and condensate, the combustion products after the boiler are cooled in the water economizer to a temperature of 140-160°C and sent through the main gas duct to the condensing surface heat exchanger-utilizer of the heat of combustion products, where they are deep cooling to a temperature of 35-40°C with the condensation of a part of the water vapor contained in the outgoing combustion products, cooled to a temperature of 35-40°C in the condensing surface heat exchanger-utilizer, the outgoing combustion products are heated to a temperature of 65-70°C with network water from the supply pipeline of the heat supply system in the surface heat exchanger installed in the main gas duct after the condensing surface heat exchanger-utilizer of the heat of combustion products at suction side of the smoke exhauster, and through the chimney they are discharged into the atmosphere, while to prevent condensation in the chimney of water vapor remaining in the outgoing combustion products after their deep cooling to a temperature of 35-40°C, by maintaining the temperature of the outgoing combustion products in front of the chimney 65-70°C, continuous monitoring is carried out and maintained at a given level, in accordance with the operating mode of the boiler plant, the flow rate of the initial raw water supplied to the condensing surface heat exchanger-utilizer, by means of the flow controller of the initial raw water, connected to the temperature sensor of the outgoing combustion products cooled in the condensing surface heat exchanger-utilizer to a temperature of 35-40°C, and the regulatory body, installed on the pipeline for supplying raw water to the condensing surface heat exchanger, and the flow rate of network water supplied from the supply pipeline of the heat supply system to the surface heat exchanger by means of a network water flow regulator connected to the temperature sensor of the outgoing combustion products heated in the surface heat exchanger to a temperature of 65 -70°C, and a regulating body installed on the pipeline for supplying network water to the surface heat exchanger.

EFFECT: increasing the efficiency and reliability of the boiler plant.

1 cl, 1 dwg