A system for efficient utilization of energy for coal-fired generator sets

A generator set and energy technology, applied in the direction of machines/engines, mechanical equipment, steam engine devices, etc., can solve the problems of insufficient utilization, no method, and no consideration of waste heat utilization of boiler tail flue gas.

Active Publication Date: 2021-06-18
NORTHEAST DIANLI UNIVERSITY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although steam extraction by a steam turbine is used to heat the boiler supply air, which can replace part of the fuel heat, but it does not consider the utilization of waste heat from the flue gas at the tail of the boiler, and does not make full use of the energy of the waste heat of the flue gas on the boiler side of the coal-fired unit
For the in-depth optimization of the thermal system of coal-fired generating units, there is no complete, effective and general method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A system for efficient utilization of energy for coal-fired generator sets
  • A system for efficient utilization of energy for coal-fired generator sets
  • A system for efficient utilization of energy for coal-fired generator sets

Examples

Experimental program
Comparison scheme
Effect test

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 feed water 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 prehea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention is an efficient energy utilization system for coal-fired generating sets, which is characterized in that it includes: a feed water heater, a drain-air preheater, a low-temperature economizer, and a flue gas-air preheater. Use the feed water heater to drain the water to heat the boiler air supply, reduce the irreversible loss caused by the flue gas heating the air, use the low-temperature economizer to heat the feed water at the outlet of the feed water heater, reduce the steam extraction flow of the steam turbine, and improve the power generation efficiency of the unit, and use the flue gas-air preheating The heater heats the air, lowers the exhaust gas temperature of the boiler, makes full use of the waste heat of the boiler flue gas, increases the temperature of the air entering the boiler, and improves the energy utilization efficiency.

Description

technical field [0001] The invention relates to a thermal system of a coal-fired generating set, which is an energy efficient 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 of the boiler and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap