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Burning Blended Coal of Indonesia Lignite and Vietnam Anthracite on a Face-Fired 600MW Boiler Original Designed for Bituminous Coal
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Elemental research of burning blended coal of Indonesia Lignite and Vietnam anthracite on a face-fired 600MW supercritical boiler is performed, which is original designed for burning high-quality bituminous coal. Maximum ratio of Vietnam anthracite can be 40 percent. With the increase of the ratio of the anthracite, the size of residue particles and the ratio of unburned carbon in residues (UBCRs) rise up markedly, the slag formation of Indonesia Lignite alleviate. The results reveal: the burnout of anthracite is more difficult than its ignition, the key way to solve this problem is to control Fineness of Pulverized Coal Powder (FPCP) of the blended coal according requirements of anthracite, but to control the Primary Air (PA) outlet temperature of mill and the mass ratio of PA to coal as flammable coal Lignite. Besides, Secondary Air (SA) Distribution mode of Centralized Oxygen Feeding(COF), Big Swirl Intensity also have obvious effects the combustion of blended coal.
Title: Burning Blended Coal of Indonesia Lignite and Vietnam Anthracite on a Face-Fired 600MW Boiler Original Designed for Bituminous Coal
Description:
Elemental research of burning blended coal of Indonesia Lignite and Vietnam anthracite on a face-fired 600MW supercritical boiler is performed, which is original designed for burning high-quality bituminous coal.
Maximum ratio of Vietnam anthracite can be 40 percent.
With the increase of the ratio of the anthracite, the size of residue particles and the ratio of unburned carbon in residues (UBCRs) rise up markedly, the slag formation of Indonesia Lignite alleviate.
The results reveal: the burnout of anthracite is more difficult than its ignition, the key way to solve this problem is to control Fineness of Pulverized Coal Powder (FPCP) of the blended coal according requirements of anthracite, but to control the Primary Air (PA) outlet temperature of mill and the mass ratio of PA to coal as flammable coal Lignite.
Besides, Secondary Air (SA) Distribution mode of Centralized Oxygen Feeding(COF), Big Swirl Intensity also have obvious effects the combustion of blended coal.
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