Comparing Method Analysis for Lower Steam Temperature of 660MW Supercritical Lignitic Boiler

DOI

10.2991/gmee-15.2015.50How to use a DOI?

Keywords

component; supercritical unit; boiler; low main steam temperature; super heater

Abstract

The problem of lower main steam temperature(MST) of a supercritical boiler designed for burning high moisture lignite is analyzed. By comparing to another structure-similar subcritical boiler, the effects of coal, furnace size, combustion mode and heating surface distribution are studied. The results show that the major cause of this lower MST problem is unduly decline of high temperature heating area due to over-estimating the heat transfer capability of the upper furnace water wall of the supercritical boiler. At last, this document suggests to the increase the size of rear part of partition platen superheater(SH) to solve the problem and has a certain actual guiding reference.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhenning Zhao
AU  - Yuanyuan Li
AU  - Qingfeng Zhang
AU  - Jinjing Li
PY  - 2015/12
DA  - 2015/12
TI  - Comparing Method Analysis for Lower Steam Temperature of 660MW Supercritical Lignitic Boiler
BT  - Proceedings of the 2nd International Conference on Green Materials and Environmental Engineering
PB  - Atlantis Press
SP  - 194
EP  - 198
SN  - 2352-5401
UR  - https://doi.org/10.2991/gmee-15.2015.50
DO  - 10.2991/gmee-15.2015.50
ID  - Zhao2015/12
ER  -