Method for generating electricity by using low-pressure saturated steam

Abstract

The invention discloses a method for generating electricity by using low-pressure saturated steam. An electric generator is started by adopting such two levels of pressure steam as main steam and supplementary steam. The main steam is transmitted into a high pressure stage of a supplementary steam condensing steam turbine after voltage stabilization by a self-operated adjusting valve. The supplementary steam is transmitted into a low pressure stage of the supplementary steam condensing steam turbine. The main steam and the supplementary steam push the supplementary steam condensing steam turbine to rotate and the supplementary steam condensing steam turbine drives the electric generator to generate electricity. The invention is characterized as follows: 1. the invention directly uses saturated steam to generate electricity without steam super heating by using supplementary-burning boilers such as a superheated steam boiler and the like. The invention prevents environmental pollution and extra fuel consumption. Moreover, system complexity is low and productive maintenance is simple; and 2. the invention adopts higher pressure level of converter-vaporization saturated steam as a main steam source, and incorporates a certain flow of lower pressure level of heating furnace-vaporization saturated steam after a machine group regulating stage. The invention uses supplementary steam condensing steam turbine electric generating sets to generate electricity, thereby making full use of enterprise saturated steam source and resulting in higher cascade utilization rate of the source.

Description

technical field [0001] The invention relates to the technical field of low-pressure saturated steam power generation, and is applicable to a method for metallurgical enterprises to use low-pressure saturated steam to generate power, especially a method for metallurgical enterprises to use converters and heating furnaces to vaporize and recover steam to generate power. Background technique [0002] While consuming energy, metallurgical enterprises will also produce secondary energy such as steam recovered by converter vaporization and steam recovered by heating furnace vaporization. The energy they carry belongs to low-temperature waste heat and is a low-grade saturated steam resource. High water content. If it is not fully utilized, a large amount of waste heat resources will be wasted in vain. [0003] At present, there are roughly two ways to utilize the above-mentioned steam resources: one is heat utilization, which directly uses its heat energy for production or living ...

AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: (1) due to the use of superheated steam furnace, the whole system is more complicated, and the operation and maintenance are more troublesome; (2) the pollution is large, extra fuel is consumed, and resources are wasted

This technology simply uses the converter to vaporize and recover steam to generate electricity, but does not use the low-pressure heating furnace to vaporize and recover steam resources, and the cascade utilization rate of energy is low

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