SU1132101A2 - Make-up water preparation system - Google Patents

Abstract

SYSTEM OF PREPARATION OF ADDITIONAL WATER according to auth.St. 7984.12, differing from the fact that, in order to increase the efficiency of the pump --- ../ by the deep cooling of smoke gases and reducing the cost of water preparation when using the system in a heat and power plant, a contact heater is additionally installed during the heating water heater a contact condenser with a pallet and with a closed water circuit, equipped with a surface heater. included in the heated medium parallel to the turbine codensor, and the pallet of the contact condenser communicates with the secondary end a round of water-to-water surface heat exchanger between the latter and the device for chemical cleaning (L of water.

Description

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The invention relates to a power system, namely to systems for the preparation of additional water, and can be used at thermal electric power plants, mainly heating plants, running on natural gas. .-.

A known system for the preparation of additional water in a boiler plant, comprising a contact economizer, a sump which is connected to the additional water deaerator.

In this system, condensate separated from the flue gases is used as an additive.

However, the application of this system at the heat and power plants is inefficient, since the supply of water after the condenser to the contact economizer does not allow the flue gases to be deeply cooled, because the temperature of the water after the condenser. 30-35 ° C.

According to the main auth. No. 798412 / the known system of Preparing additional water, containing a contact water heater connected via the heating coolant of the boiler’s flue jn and equipped with branch pipes for drainage and supply of water, as well as the condenser of the bin, the heat exchange surface of which is connected to the consumer of the additional water surface heat exchanger, the primary circuit of which is connected to the nozzles of the outlet and the supply of water of contact water: a heater, and the secondary between the heat exchange surface of the condensate and the like additional water booster C2

The disadvantage of the system lies in the fact that it does not provide deep cooling of the fume gases, as in the contact water heater the water heated in the condensate of the turbine is supplied, and the moisture contained in the flue gases is not used.

The purpose of the invention is to increase the efficiency due to the deep cooling of the flue gases and the reduction of the cost of water treatment when using the system at the cogeneration plant.

The goal is achieved by the fact that in the system of preparation of additional water according to the autor. No. 798412, behind the contact water heater along the heating fluid additionally

A contact condenser with a pallet and with a closed water circuit is installed, equipped with a surface heater connected to the heated medium parallel to the turbine condenser, the contact condenser sub-pump communicating with the secondary circuit of the water-water surface heat exchanger between the latter and the device for chemical water purification.

The drawing shows a system for the preparation of additional water.

The system contains a contact water heater 1 connected to the gas flue 2 of the boiler 3 and included in the primary circuit 4 of a water-cooled surface heat exchanger 5. The contact condenser 6 is installed along the contact water heater 1 along the heating coolant (flue gases) and with closed water contour 8, in which is included. surface heater 9. Condenstor 10 of the turbine with its heat exchange surface 1.1 is connected to the heated medium parallel to the heater 9. The pallet 7 of the contact condenser 6 is connected through the storage tank 12 to the secondary circuit 13 of the heat exchanger 5 between the last and the second 14 cleaning chemical water, to the secondary circuit 13 of the heat exchanger 5 after it is connected to the aerator 15, communicated with the consumer of additional water (not shown).

The system works as follows

The flue gases from the boiler 3 heat the water in the contact water heater 1. Iodine water from the contact water heater 1 is pumped to the heat exchanger 5, from where the cooled water is sent back to the contact water heater 1. The gases cooled and moistened in the contact water heater 1 are fed to the condenser 6, where they are cooled below the dew point temperature by contacting with water a closed water circuit .8 cooled in a preheater 9. Some of the moisture contained in the products is condensed burnout This condensate (demineralized water) together with the arch of circuit 8 is collected in the sump 7 of the contact condenser 6. Excess demineralized water flows through the overflow pipe

Claims (1)

WATER PREPARATION SYSTEM for ed. No. 7984.12, characterized in that, in order to increase efficiency by deep cooling of the flue gases and reduce the cost of preparing the water when using the system at a cogeneration plant, a contact condenser with a sump and a closed water circuit is additionally installed behind the contact water heater along the heating coolant equipped with a surface heater ^ connected across the turbine condenser via a heated medium, and the contact condenser tray is in communication with the secondary water circuit -vodyanago surface heat exchanger between the latter and _{with a} device for chemical cleaning © water. > 1132101 2