Converter waste heat generating system

A waste heat power generation and converter technology, used in the manufacture of converters, machines/engines, mechanical equipment, etc., can solve the problems of dangerous steam turbines, large steam consumption, low power generation efficiency, etc., to improve power generation efficiency, ensure normal operation, reduce The effect of the amount of condensed water

Inactive Publication Date: 2010-10-20
ZHEJIANG XIZI UNITED ENG
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] 1. Saturated steam is wet steam with a high water content, and a lot of water is produced during the expansion process in the steam turbine. Therefore, it is necessary to consider the measures to carry water with the blades of the low-pressure stage of the steam turbine; due to the large amount of saturated steam generated during the work process Condensed water, when the steam turbine suddenly loses load, the condensed water accumulated on the surface of the rotor, the surface of the fixed part of the machine and the piping system, especially in the large-volume steam-water separation reheater, will flash into steam, causing the steam turbine to accelerate dangerously , affecting the normal operation of the steam turbine
[0004] 2. Due to the low specific enthalpy of saturated steam (especially low-pressure saturated steam), the steam consumption is large during power generation, and the power generation efficiency is low

Method used

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  • Converter waste heat generating system
  • Converter waste heat generating system
  • Converter waste heat generating system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Such as figure 1 As shown, the converter waste heat power generation system described in this embodiment includes a waste heat boiler 1, a heat accumulator 2, a steam turbine unit 3, and a generator set 4. The steam outlet of the waste heat boiler 1 is connected to the steam inlet of the heat accumulator 2. The feature is that it also includes a heating furnace 12 containing a superheater 5 , and the steam outlet of the heat accumulator 2 is connected with the steam inlet of the steam turbine unit 3 through the superheater 5 . The saturated steam generated by the waste heat boiler 1 is stabilized by the heat accumulator 2, and heated into superheated steam by the superheater 5 to improve the quality of the steam. The water contained in the saturated steam is heated into water vapor, so that it becomes dry steam, thereby effectively reducing the amount of condensed water produced when it works inside the steam turbine. In addition, the superheater 5 can increase the spec...

Embodiment 2

[0018] Such as figure 2 As shown, the converter waste heat power generation system described in this embodiment is different from Embodiment 1 in that the water inlet of the waste heat boiler 1 is connected to the deaerator water tank 6, and the deaerator water tank 6 is integrally connected with a deaerator head 7 The steam outlet of the steam turbine unit 3 is connected to a condenser 8, and the outlet of the condenser 8 is connected to the water inlet of the deaeration head 7 through the condensed water heater 11 in the heating furnace 12. Water resources can be effectively saved by condensing and deoxygenating the steam after work is done, and returning it to the waste heat boiler 1 again.

Embodiment 3

[0020] In the converter waste heat power generation system described in this embodiment, the waste heat boiler 1 is a steel plant converter waste heat boiler 1 , and the others are the same as in the second embodiment.

[0021] When in use, the saturated steam supplied by the converter waste heat boiler 1 is absorbed in the heat accumulator 2, and converted into a stable and continuous steam source, heated by a heater to become superheated steam, and worked by a steam turbine until the generator generates electric energy, and the steam turbine unit 3. The steam at the end is condensed into water through the condenser 8, transported to the deaeration head 7 by the deaeration water tank 6 through the condensate pump 9 for deaeration, and returned to the converter waste heat boiler 1 through the feed water pump 10, and heated into superheated steam by the superheater 5. Stable and continuous power generation, significantly improving power generation efficiency.

[0022] The iron ...

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Abstract

The invention discloses a converter waste heat generating system, which comprises a waste heat boiler, a heat accumulator, a steam turbine unit, and a generator set. A steam outlet of the waste heat boiler is connected with a steam inlet of the heat accumulator. The converter waste heat generating system is characterized in that the converter waste heat generating system also comprises a heating furnace with a superheater, and a steam outlet of the heat accumulator is connected with a steam inlet of the steam turbine unit through the superheater. Due to voltage stabilization of the heat accumulator, the converter waste heat generating system converts intermittent and unstable steam generated by the waste heat boiler into continuous and stable steam, and guarantees the normal work of the steam turbine unit; and by heating moisture contained in saturated steam into vapor by the superheater, the vapor becomes dry steam. Therefore, the condensate water generated when the vapor works in the steam turbine unit is effectively reduced, and the normal work of the steam turbine unit is guaranteed. In addition, the steam specific enthalpy is increased, so that the generating efficiency is improved.

Description

technical field [0001] The invention relates to a steam turbine power generation system, in particular to a converter waste heat power generation system. Background technique [0002] Utilization of waste heat is an important direction for energy saving and consumption reduction. In the existing industrial production, a part of the steam turbine power generation system in waste heat power generation uses saturated steam as power generation power, that is, using (waste heat) boiler to generate saturated steam to generate electricity, effectively using waste heat resources . When generating electricity, the waste heat boiler produces saturated steam directly into the steam turbine unit to do work, but this method has the following disadvantages: [0003] 1. Saturated steam is wet steam with a high water content, and a lot of water is produced during the expansion process in the steam turbine. Therefore, it is necessary to consider the measures to carry water with the blades o...

Claims

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Application Information

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IPC IPC(8): C21C5/28F01D15/10
Inventor 孙海云姚琼沈东任磊许元邵宝山孔德晶许同华赵振刘煜
Owner ZHEJIANG XIZI UNITED ENG
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