【摘要】：為研究生物質(zhì)顆粒燃料燃燒NO排放規(guī)律及其生成機理,采用CFD和Chem Kin聯(lián)合仿真,建立試驗鍋爐燃燒筒CFD網(wǎng)絡(luò)模型,應(yīng)用Chem Kin接口導(dǎo)入簡化的17組分58基元反應(yīng)機理,建立Chem Kin-PSR反應(yīng)模擬網(wǎng)絡(luò),選用Reaction Design C2_NOx詳細(xì)機理,對棉稈、玉米秸稈、木質(zhì)3種生物質(zhì)顆粒NO排放進行模擬。結(jié)果表明,NO生成量:棉稈玉米秸稈木質(zhì);NO排放量隨過量空氣系數(shù)的增加先增大后減小,在過量空氣系數(shù)為1.7附近達到峰值。將模擬結(jié)果與試驗結(jié)果進行比較,證明了模型和化學(xué)反應(yīng)機理的正確性,為生物質(zhì)燃料燃燒NO排放的預(yù)測與控制提供參考。
[Abstract]:In order to study the NO emission law and its formation mechanism of biomass pellet fuel combustion, the CFD network model of experimental boiler combustion cylinder was established by CFD and Chem Kin simulation, and the simplified 58 elementary reaction mechanism of 17 components was introduced by Chem Kin interface. The Chem Kin-PSR reaction simulation network was established and the detailed mechanism of Reaction Design C2_NOx was selected to simulate the NO emissions from cotton stalk, corn straw and wood biomass particles. The results showed that the no emission from cotton stalk and maize straw increased firstly and then decreased with the increase of excess air coefficient, and reached the peak value when the excess air coefficient was about 1.7. By comparing the simulation results with the experimental results, the correctness of the model and the chemical reaction mechanism is proved, which provides a reference for the prediction and control of NO emissions from biomass fuel combustion.
【作者單位】： 中國農(nóng)業(yè)大學(xué)工學(xué)院;
【基金】：中央高�；究蒲袠I(yè)務(wù)費專項資金(2015GX003) 中國農(nóng)業(yè)大學(xué)教育基金會“大北農(nóng)教育基金”資助項目(1071-2413003)
【分類號】：X701;S216

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