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Energy efficient utilization system of coal-fired generator set

A generator set and energy technology, applied in the direction of machines/engines, mechanical equipment, steam engine devices, etc., can solve the problems of large energy loss, no method, and insufficient energy utilization

Active Publication Date: 2019-08-23
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy on both sides of the boiler and steam turbine of the generator set has not been fully utilized, and the energy loss caused by the energy level mismatch caused by the waste heat of the boiler flue gas and the overheating of the steam extraction steam of the steam turbine is still very large
For the in-depth optimization of the thermal system of coal-fired generating units, there is no complete, effective and general method

Method used

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  • Energy efficient utilization system of coal-fired generator set
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  • Energy efficient utilization system of coal-fired generator set

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Embodiment Construction

[0011] The following combination Figure 1-Figure 3 The present invention will be further described in detail with specific examples, and the specific examples described here are only used to explain the present invention, and are not intended to limit the present invention.

[0012] refer to figure 1, a coal-fired generating set energy efficient utilization system of the present invention comprises: boiler furnace 27, boiler tail flue 15, steam turbine high-pressure cylinder 1, steam turbine medium-pressure cylinder 2, steam turbine low-pressure cylinder 3, first high-pressure feedwater heater 4, The second high-pressure feedwater heater 5, the third high-pressure feedwater heater 6, the deaerator 7, the feedwater pump 8, the first low-pressure feedwater heater 9, the second low-pressure feedwater heater 10, the third low-pressure feedwater heater 11, the first Four low-pressure feed water heater 12, condensate pump 13, condenser 14, economizer 16, first flue gas-air preheat...

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Abstract

The invention relates to an energy efficient utilization system of a coal-fired generator set. The system is characterized by comprising feed water heaters, hydrophobic air preheaters, low temperatureeconomizers, and flue gas and air preheaters. The feed water heaters are used for hydrophobic heating of boiler air supply, irreversible loss caused by flue gas heating air is reduced, the low-temperature economizers are used for heating the outlet water supply of the feed water heaters, the steam extraction flow of a steam turbine is reduced, the power generation efficiency of the set is improved, the flue gas and air preheaters are used for heating air, the smoke exhaust temperature of the boiler is reduced, the waste heat of the boiler smoke is fully utilized, the air temperature enteringthe boiler is improved, and the energy utilization efficiency is improved.

Description

technical field [0001] The invention relates to a thermodynamic system of a coal-fired generating set, in particular to a high-efficiency energy utilization system of a coal-fired generating set. Background technique [0002] Coal-fired generating units have the advantages of controllable power supply load, less impact from the natural environment, and relatively mature technology. However, with the increasingly serious environmental pollution and the lack of fossil energy year by year, as a provider of clean energy and an emitter of environmental pollutants, the power generation efficiency of coal-fired power generation units needs to be improved urgently. [0003] At present, the main method to improve the efficiency of coal-fired generating units is to reduce irreversible losses. The existing thermal system integration technology of coal-fired generating units can improve the efficiency of coal-fired generating units to a certain extent. However, the energy on both sides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K7/38F01K7/40F01K11/02
CPCF01K7/38F01K7/40F01K11/02
Inventor 王迪李浩宇周云龙杨美李晓莉孙博刘起超黄娜常赫杨宁姚灏郭新田李昱庆
Owner NORTHEAST DIANLI UNIVERSITY
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