SU83139A1 - Boiler plant for heat recovery of combustion products - Google Patents

Description

The subject of the invention is a boiler unit of two benches, which made it possible with the aid of a tc-compressor to more fully utilize the heat of the combustion products and the thermal heat of the process gases.

For the use of teila, typically used are boiler units installed in gas ducts by baking in the way of gases, in front of a BHGPPH into a chimney}.

However, such plants work economically only at relatively high temperatures of waste and their gases, lowering KOTOpoii leads to the fact that the steam produced in the boiler has so low pressure that it is heavy for the power and technology to make it clumsy.

In the described invention, this disadvantage is eliminated by the fact that the utilization boiler is made of two boilers arranged in series along the gases. The first boiler is installed in the high-temperature zone g, produces high-pressure steam, and the second is installed in the 1H13 heat zone and you abort the low-pressure steam.

To increase the pressure of the steam of the second boiler to the required value, a steam ejector is used, in which the working medium is a high pressure steam steam that is preheated through the steam superheater.

Such a scheme of the boiler room to reduce the amount of waste gases and ensure the use of heat of combustion products.

The drawing shows a longitudinal section xstayiki.

The unit consists of a gas tube boiler of high gaslein, the same boiler of pressure turbine;., A steam generator on a jet ejector.

No. 83139

High pressure steam from the boiler / goes through the steam line 2 to the steam superheater 3, and on leaving it goes through the steam line 4 to the ejector 5. Low pressure steam from the boiler also goes to the ejector, where it is compressed to the required pressure and leaves the installation in the direction 7 .

The flue gases enter the superheater in the direction of arrow 8, then high and low pressure boilers are successively passed and in the direction of arrow 9 they exit into the chimney.

Subject invention

A boiler plant for the utilization of heat from combustion products and physical heat of process gases, consisting of two pressure boilers with the location of the heating surface of a low-pressure boiler in a gas stream after the high-pressure boiler, characterized in that, in order to produce steam of the required parameters, for vapor compression low pressure, an ejector is used, in which the working medium is a high-pressure boiler steam, previously passed through a superheater.