SU1254253A1 - Method of recovery of heat energy of removed gaseous mixture - Google Patents

Description

one

The invention relates to the reuse of low-grade heat from power plants and can be used, in particular, in the use of heat of exhaust gases.

The purpose of the invention is to increase the efficiency of utilization of the thermal energy of the wet gas mixture and the thermal potential of the incoming air.

The drawing shows a schematic diagram of an apparatus for implementing a method for utilizing heat energy of a gas mixture to be removed.

A device for implementing the method of utilization of thermal energy contains a compressor 1, which through a heat recovery unit 2 is connected to a mixing chamber 3,

Heater 4 is connected via a water main 5 to a heat exchanger 6 placed in a mixing chamber 3, and through a gas main 7 to a mixing chamber 3.

Heater 4 is communicated via the supply air line 8 to the utilizer 2.

Compressor 1 has a drive 9.

The utilization of the heat energy of the gas mixture to be removed is carried out as follows.

The flow of the removed gas mixture, compressed in the compressor 1, enters the heat exchanger 2, where it is cooled, for example, to 400 K and then enters the mixing chamber 3.

In the mixing chamber 3, the flow of the gas mixture containing water vapor

Editor A.Lezhnina

Compiled by M.Rashepkin Tehred M. Morgenthal

Order 4706/41

Circulation 649Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

-Production and printing company, Uzhgorod, st. Project, 4

5 / - 2532

in contact with the surface of the heat exchanger 6 and the drops of process water sprayed in the mixing chamber 3, is cooled, and the water vapor condenses on the heat exchange surface of the heat exchanger 6 to release heat of vaporization.

The dry gas mixture formed in the mixing chamber flows from the mixing chamber 6 to the heater 4, where it preheats the water, which then flows through the water line 5 to the heat exchanger 6,

J5 then preheats the supply air, cools to a temperature close to the ambient temperature, and is blown out.

2Q. The supply air, preheated in the preheater 4, enters the heat exchanger 2, where it is heated to a high temperature with warm compressed gas mixture and supplied to

25 to the consumer.

Cooling the compressed gas mixture in the utilizer 2 to, for example, 400 K is necessary to have a supply of temperature At (400-373,15) K, which guarantees the condensation of water vapor from the gas mixture in the mixing chamber 3.

When the compressed wet gas mixture is heated to 373.15 K, the flow of the gas mixture is directed from the compressor 1 directly to the mixing chamber 3, the waste heat recovery unit 2.

Proofreader L.T. sko

Claims (1)

METHOD FOR DISPOSAL OF THERMAL ENERGY OF REMOVED GAS MIXTURE, which consists in the fact that the supply air is preheated in the heater, fed to the utilizer, it is finally heated through the stationary heat-exchanging surface of the utilizer with the heat energy of the gas mixture to be removed and supplied to the consumer, which In order to increase the efficiency of utilization of the thermal energy of the moist gas mixture and the thermal potential of the supply air, the removed gas mixture is pre-compressed to a pressure I equal to the partial pressure of water vapor mixture at a temperature of 373.15 K saturation, and the final preheating of the supply air is performed with simultaneous condensation of moisture from a gas mixture on a stationary heat transfer surface. SU ,,, 1254253 1 12