HIGH-TEMPERATURE STEAM POWER UNIT OF DOCRITICAL PRESSURE AND HIGH-TEMPERATURE DIRECT CURRENT BOILER OF PRE-CRITICAL PRESSURE OPERATING WITH VARIABLE PRESSURE

摘要

1. A high-temperature steam power installation of subcritical pressure, comprising: a furnace system, a steam turbine generator system, and a condensate and feed water system, the furnace system comprising a high temperature steam superheater for supplying superheated steam with subcritical pressure parameters and a temperature of 593 ° C or higher, and a high-temperature intermediate superheater for supplying intermediate superheated steam with a temperature of 593 ° C or higher, and moreover, a steam generator generating system The turbines include a high-temperature steam turbine driven by superheated steam with subcritical pressure parameters and a temperature of 593 ° C or higher, and a medium pressure steam turbine with intermediate steam superheating, driven by intermediate superheated steam with a temperature of 593 ° C or higher. 2. The high-temperature steam-powered subcritical pressure installation according to claim 1, wherein the furnace system is a powder-fired coal-fired boiler that uses coal as the main fuel, as well as a direct-flow boiler operating under variable pressure, which uses a furnace screen of a direct-flow spiral boiler. The high temperature steam power subcritical pressure installation according to claim 2, in which the rated power of the high temperature steam power subcritical pressure installation is in the range from 0.1 million kW to 0.4 million kW. The high-temperature steam-powered subcritical pressure installation according to claim 3, in which the furnace boiler system burns biomass or process gas as fuel