RU2319916C2 - Condensation plant - Google Patents

Abstract

FIELD: heat-exchanging equipment, particularly steam condensation equipment.

SUBSTANCE: condensation plant comprises condenser, tubular heat-exchanging surface with steam condensation inside tubes, condensate accumulation means with non-condensed gas removal channel, condensate cooler and condensate pump with pressure pipeline. Mixing heat-exchanger is arranged inside non-condensed gas removal channel. Part of cooled condensate enters the mixing heat-exchanged downstream of condensate pump.

EFFECT: increased operational efficiency.

1 dwg

Description

The invention relates to the field of heat exchangers and can be used as a steam condenser containing non-condensable gases in turbine plants, processes, in the chemical, food and other industries.

There are known designs of steam condensers with condensation inside the pipes (See Milman O.O., Fedorov V.A.

The main drawback of these plants is the poor cooling of the gas-vapor mixture in the pipes, which reduces the efficiency of the condensing plants.

Condensation units with condensation inside the pipes and condensate overcooling are known (See. Fedorov V.A., Milman O. O. Thermohydraulic self-oscillations and instability in heat-exchange systems with a two-phase flow. Publishing House MPEI, 1998, p.223).

The disadvantage of this installation is a decrease in efficiency due to the unsatisfactory removal of non-condensable gases.

The objective of the invention is to increase the efficiency of the condensing unit, it is solved by the fact that at the outlet of the vapor-gas mixture from the condensate collector installed in front of the condensate cooler, a mixing heat exchanger is placed into which condensate is supplied after the condensate pump. Steam from a gas-vapor mixture condenses on jets of supercooled condensate.

As a result of the implementation of this essential feature, the vapor content in the vapor-gas mixture and the energy consumption for its removal are reduced and the operation of the condensation unit becomes more efficient.

The device diagram is shown in the drawing. The condensing unit consists of a condenser 1, containing a tubular heat exchange surface with steam condensation inside the pipes 8, a condensate cooler 2, a condensate pump 3 with a discharge pipe 4, connecting the pump to the condensate collector 5, which has a channel for removing non-condensable gases 6 and a mixing heat exchanger 7 built into it .

The device operates as follows. The steam enters the condenser 1, condenses inside the pipes of the heat exchange surface 8, the steam condensate is discharged into the condensate collector 5 and, through the condensate cooler 2, is pumped out by the condensate pump 3 through the discharge pipe 4. A part of the cooled condensate enters the mixing heat exchanger 7 installed in the channel 6 for removing non-condensable gases from condensate trap 5.

Thanks to the use of the above design solution, the vapor content in the vapor-gas mixture decreases, the energy consumption for gas removal decreases, and the operation of the condensing unit becomes more efficient.

Claims (1)

A condensing installation comprising a condenser, a tubular heat exchange surface with steam condensation inside the pipes, a condensate collector with a channel for removing non-condensable gases, a condensate cooler, a condensate pump with a discharge pipe, characterized in that a mixing heat exchanger is placed in the channel for removing non-condensable gases, into which part of the cooled condensate enters after the condensate pump.