SU819491A1 - Steam generator - Google Patents

Description

(54) STEAM GENERATOR

I

The invention relates to the field of energy and can be used in gas-tube waste heat boilers and industrial fire tube and fire tube boilers.

Closest to the invention is a steam generator comprising a horizontal gas tube bundle drum coupled to a gas duct fitted with a water tube bundle, whose supply and discharge manifolds communicate with the water and steam volumes of the separator drum 1, respectively.

The known steam generator operates in a single-stage evaporation scheme.

The disadvantages of this steam generator are reduced efficiency, as with a single-stage evaporation scheme it has a relatively large boiler water flushing, and reduced reliability, since the increased salinity of the boiler water, which occurs during the operation of the steam generator, using a single-stage evaporation scheme leads to wuxi; corrosion of the gas tube bundle metal, salt removal into the steam path and steam superheater burnout.

The aim of the invention is to improve the efficiency and reliability of the steam generator.

This goal is achieved by the fact that the steam generator is equipped with a cyclone separator with steam, evaporating and water zones, connected respectively to the steam volume of the drum-separator, the outlet and inlet manifolds of the water tube bundle.

FIG. 1 shows a steam generator; on 0 of fig. 2 shows section A-A in FIG. one.

Claims (1)

The steam generator contains a drum-separator 1 with a horizontal gas-tube bundle 2, connected to a gas duct 3 equipped with a water-tube bundle 4, the inlet 5 and the outlet 6 collectors of which are connected respectively to the water and steam volumes of the drum-separator 1. In addition, the steam generator is equipped with a cyclone a separator 7 with steam, evaporation and water zones connected respectively to the steam volume of the drum separator 1, the outlet 6 and the inlet 5 collectors. Water pipe bundle 4 with inlet and outlet manifolds can be connected with intermediate annular manifolds 8. The cyclone separator 7 is connected by a steam zone to the steam volume of drum separator 1 by tube 9, and the separator drum is connected to the inlet manifold 5 of tube bundle 4 by tube The cyclone separator 7 is equipped with a pipe 11 for purging. The steam generator can also be equipped with a steam superheater 12 connected to the steam volume of the drum separator. The steam generator works as follows. The gases sequentially wash the superheater 12, the water tube bundle 4 and the gas tube bundle 2 where they are cooled, and then leave the steam generator. In the water tube bundle 4, the water is heated and partially evaporated. The steam-water mixture from bundle 4 falls into the upper halves of the annular collectors 8, where part of the water separates and returns to their lower halves. The rest of the water along with the steam is directed through the manifold b to the correction zone of the cyclone separator 7, where the final separation of the steam-water mixture into steam and water occurs. From the separator 7, the steam is directed through pipe 9 into the steam volume of the drum separator, and water returns through the inlet manifold 5 to the annular collectors 8. The water tube bundle 4, collectors 8, 5 and 6, as well as the cyclone separator 7 form the contour of the second evaporation stage boiler water. The feed of the second stage evaporation circuit is produced from the drum separator 1 through pipe 10, and its purging is carried out with the aid of pipe 11. The first stage evaporation circuit forms a drum seaparator 1, the water in which is heated by the gas tube beam 2, and the steam / - "S 8 in in together with the vapor of the cyclone separator 7 is directed through the superheater 12 to the consumer. Thus, supplying the cyclone steam generator with a separator with steam, evaporating and water zones connected respectively to the steam volume of the drum separator, the outlet manifold 6 and the inlet manifold 5 of the water tube bundle 4 allows to organize two-stage evaporation of boiler water, which improves efficiency, how boiler water blowdown is reduced. In addition, reliability increases as the organization of the first evaporation stage in the drum separator reduces corrosion of the metal of the gas tube bundle 2, reduces salts in the steam path and, as a result, reliable operation of the superheater 12. Formula of the invention A steam generator containing a drum separator with a horizontal gas tube a bundle connected to a gas duct supplied with a water tube bundle, the inlet and outlet manifolds of which are connected respectively to the water and steam volume of the separator drum, In order to be economically reliable, it is equipped with a cyclone separator with a steam, evaporating water zone, connected respectively to the steam volume of the Barbadia separator, which discharges and feeds the collectors of the water tube bundle. Sources of information taken into account during the examination 1. Patent of Germany No. 1244804, cl. 13 a 21/30, published. 1968. // FIG. 2 E :.