Coal-fired secondary reheating steam turbine generator unit integrated with supercritical CO2 circulation

A turbo-generator set, double reheating technology, applied in the direction of steam engine device, machine/engine, steam application, etc., can solve the problems of large heat exchange temperature difference, increased irreversible loss, economic impact of the unit, etc., to achieve superheat Effect of reduction, loss reduction

Active Publication Date: 2018-05-04
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the double reheating system, the high-parameter steam generated after the first reheating and the second reheating of the boiler enters the high-pressure cylinder and the medium-pressure cylinder, and

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
  • Coal-fired secondary reheating steam turbine generator unit integrated with supercritical CO2 circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The purpose of the invention is to provide an integrated supercritical CO 2 Circulating coal-fired secondary reheat turbogenerator set, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] figure 1 for the integrated supercritical CO 2 Schematic diagram of the composition of a cycle coal-fired double reheat turbogenerator unit. The integrated supercritical CO 2 The cycle coal-fired double reheat turbo-generator set is mainly composed of a coal-fired boiler, a double-reheat turbo-generator set, supercritical CO 2 Composition of power generation cycle system; in the double reheat turbogenerator set, ultra-high pressure cylinder 15, high-pressure cylinder 16, medium-pressure cylinder 17, low-pressure cylinder 18 are sequentially connected with the first generator 19, ultra-high pressure cylinder 15, high-pressure cylinder 16 , The extraction steam of the medium pressure cylinder 17 and th...

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 invention belongs to the technical field of secondary reheating steam turbine generating and energy saving and discloses a coal-fired secondary reheating steam turbine generator unit integrated with supercritical CO2 circulation. The unit comprises a coal-fired boiler, a secondary reheating steam turbine generator unit and a supercritical CO2 circulating generation system. Six-stage extractionsteam connected with a high pressure cylinder and an intermediate pressure cylinder is connected with steam-CO2 heat exchangers and enters corresponding feed water regenerative heaters after heatingCO2; in the CO2 circulating generation system, CO2 at an outlet of a compressor is divided into two streams, the two streams are heated by three stages of steam-CO2 heat exchangers respectively and are converged to enter a CO2 turbine for working, and CO2 exhaust enters the compressor after passing through a CO2-feed water heater and a CO2-air preheater sequentially; in a flue at the tail of the boiler, air is divided into two streams, and the two streams are preheated by the CO2-air preheater and a low-temperature air preheater respectively and are converged to enter a main air preheater. Bythe aid of the integrated system, the superheat degree of regenerative extraction steam of the secondary reheating unit and the exergy loss of air preheating are substantially reduced, the work of a steam turbine is increased, and the efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of double reheat steam turbine power generation and energy saving, in particular to an integrated supercritical CO 2 Cycle coal-fired double reheat turbogenerator unit. Background technique [0002] The climate problem of global warming is becoming more and more serious, and China, as the largest developing country in the world, currently uses coal-based primary energy and thermal power-based secondary energy structure, CO 2 Emissions are characterized by rapid growth and large volumes. China's national conditions, development stage and energy structure determine the effective use of CO 2 It is an important strategic choice for China to deal with climate change. CO 2 As a new generation of power cycle working medium, it has gradually attracted people's attention in many fields such as solar energy and geothermal energy. With the supercritical CO 2 Cycle power generation system and CO 2 In-depth resear...

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
IPC IPC(8): F01K25/08F01K7/32F01K17/02F01D15/10
CPCF01D15/10F01K7/32F01K17/025F01K25/08Y02E20/34
Inventor 许诚张强辛团团李潇洒徐钢刘文毅杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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