SU1449770A2 - Boiler plant - Google Patents

Abstract

The invention relates to a technology and can be used in boiler installations of power plants and heating furnaces. The purpose of the invention is to increase the efficiency and reliability of the unit by preventing the discharge of polluted effluent. The boiler unit contains a boiler 1 with a gas duct 2, in which a drying chamber 3 with spraying devices 4 and 5 is installed, a scrubber 6 with a tank 7 of industrial water, a buffer tank 8 waste water, an economizer and a water heater 9, a condensate collector 10. During operation of the boiler, flue gases enter the drying chamber, where waste water and flushing water from the scrubber circuit and the industrial water tank enter through the spray devices. Industrial water cleans flue gases from toxic contaminants. The contaminants are evaporated in the drying chamber to a dry residue, and the mixture of water vapor after the wet cleaner enters the surface of the economizer and the water heater and condenses. 1 il.

Description

The invention relates to heat engineering, can be used in boiler plants of power plants, as well as in industrial and heating furnaces, and is an improvement of the boiler unit according to ed. St. USSR No. 777350.

The aim of the invention is to increase the efficiency and reliability of the unit by preventing the discharge of contaminated effluents.

The drawing shows a diagram of a boiler unit.

The boiler unit contains a boiler 1 with a gas duct 2, in which a drying chamber 3 with spraying devices 4 and 5, a scrubber 6 with a washing water tank 7, a buffer tank 8 for waste water, an economizer and a water heater 9, a condensate collector 10 are installed.

The boiler unit operates as follows.

During operation of boiler 1, flue gases pass through the flue 2 to the drying chamber 3, where waste water comes out from the buffer tank 8 through the spraying devices 4 and evaporates to a dry residue in the drying chamber. Through the spray device 5, the washing water 3 enters the drying chamber from the scrubber circuit 6 and the washing water tank. During the circulation along the scrubber circuit, the washing water purifies the flue gases of toxic pollutants that are evaporated in the drying chamber to a dry residue. A mixture of fumes: water vapor comes after a wet cleaner to the surface of the economizer and water heater 9 and condenses. Condensate is collected in condensate collector 10.

The proposed boiler unit scheme is economical due to the fact that the drying chamber allows you to clean the waste water from salts and thereby eliminates pollution of sewage and sewage, and the dry salt residue can be used in industry for the production of gypsum, for example.

As a result of more complete purification of 15 flue gases, the flue gas water vapor condensate collected after the water economizer and water heater. For the condensate collector is cleaned only with mechanical filters and can be used instead of chemically purified water when the boiler is running on any fuel.

Claims (1)

The claims 25 Boiler unit by ed. St. No. 777350, characterized in that, in order to increase efficiency and reliability, it additionally 30 contains a drying chamber with two spraying devices located in the flue in front of the scrubber, a waste water buffer tank, a wash water tank in the wash water circuit 35 with a scrubber, an economizer and water heater condensate collector moreover, one spray device of the drying chamber is connected to the buffer capacity of the waste water, and the other to the scrubber wash water circuit.