With excellent reputation and perfect services, Nangang Power, sticking to the business motto of Client the Most Advanced, Prestige the Most Important, has deeply won trust among the professional clients. At present, trusted by a client, we are selling for them a set of6B Gas-Steam Combined Cycle power equipment which had stopped running already. The CC turbine equipment types in PG6561B, made by Nanjing Automobile Company (NAC), with the NG fuelling combustion system, MK-V as controlling system, sealed cycle cooling air the cooling method in auxiliary generator, and brushless excitation in the excitation system. Its auxiliary recovery boiler and steam turbine is made by Hangzhou Boiler Plant and NAC respectively. Since putting into service in Sep. 2001, the equipment had run 31778 hours and shut down in 2011. During the equipment¡¯s service, the owner had scheduled and launched some normal overhauls which complied with GE overhaul and maintenance standards, ever replacing key spares such as the 3rd stage rotors and the spares in combustion chamber. The equipment, when in service, was fuelled with NG, and was normally repaired and maintained on time, making its output guaranteed, much suitable for putting into commercial use again.
Transforming the equipment to being fuelled with coke oven gas (COG) for power generation after reasonable reconstruction is a new effective path to refresh the old turbine set. Coke oven gas, a sort of flammable gas produced simultaneously when the coke and coke tar is made in a coking plant, is a byproduct during coking the coal, and an excellent gas fuel. If the COG is released to the air without use, the resource is wasted while environment is contaminated. Currently, COG is mainly used for producing electric power. Featured with high heat effectiveness, less environmental pollution, faster starting-up, fewer occupation of land and less use of water, the method of gas-steam combined cycle power plant has turned out the best way for COG power generation and a splendid chance for refreshing the retired turbine sets.
More and more domestic steel and coking enterprises have put importance to the investment. In 2007, Liuzhou Xinhegang Power Co., Ltd. and our company started a cooperation project of reconstructing old gas turbine to being fuelled with COG, successfully renovating a set of PG5361E and a set of PG6551B gas turbine power equipment, which were accessedinto the grid and formally put into commercial running in May 2008 and Nov. 2012 respectively. The renovated gas-steam CC power equipment has run over 900-hour in steady and in safe, and compared with the single steam cycle power generation equipment on same scale, its power generation heat effectiveness and net power supply heat effectiveness is enormous, so undoubtedly it is economically advanced.
If used in the power projects of steel or coking enterprises, the total investment for the second handed gas-steam CC equipment can be saved by 40%-50%, and the investment cost can be recovered in 2 to 3 years, which substantially decreases the total investment for COG projects and creates new effective path in steel industry for realizing comprehensive use of resources, decreasing environmental pollution, increasing economic effectiveness, and therefore, no doubt the CCPP is a conscious project for the country and the people. If you are interested in the project, kindly contact:
Jin Yaru
Engineering Dept., Shenzhen Nangang Power Project Co., Ltd.
Tel: +86-755-25587061
Fax: +86-755-25564119
Email: jinyaru@nangang-power.com
Mobile: 159 0755 0946
Linkage: Introduction on the Project of Reconstructing Gas Turbine to the Gas-Steam CCPPFuelled with COG