本文選題：絕熱固定床 + 雙通道��； 參考：《化學(xué)工程》2017年08期

【摘要】：霧化噴嘴的性能直接取決于索泰爾平均粒徑SMD、霧滴粒徑分布PSD和霧滴覆蓋直徑DCD。利用冷模實(shí)驗(yàn),以雙通道氣流式MTP反應(yīng)霧化噴嘴為研究對(duì)象,考察了噴嘴結(jié)構(gòu)與霧化性能之間的關(guān)系,研究了具有不同旋流結(jié)構(gòu)的噴嘴在不同氣液比q_(mG)/q_(mL)下SMD,PSD及DCD之間的變化規(guī)律。結(jié)果表明,旋流槽尺寸與結(jié)構(gòu)、液相通道內(nèi)徑dL對(duì)SMD,PSD和DCD具有顯著地影響。當(dāng)噴嘴結(jié)構(gòu)參數(shù)為:旋流通道數(shù)n=2,旋流通道尺寸b×h=0.5mm×1.0 mm,液相通道內(nèi)徑dL=1.0 mm時(shí),隨著q_(mG)/q_(mL)由8.70增加至20.32,噴嘴對(duì)應(yīng)SMD由20.02μm降至17.88μm,霧滴粒徑分布介于9.91μm和48.8μm之間,特征中徑D_(0.5)達(dá)到21.45μm。當(dāng)n=3,b×h=1.5 mm×2.0 mm和2.0 mm×2.0 mm,dL=2.5 mm時(shí),SMD隨著q_(mG)/q_(mL)的增加分別由62.48μm降至58.89μm,由63.02μm降至59.39μm,霧滴粒徑分布變寬,介于34.3μm和111.6μm之間,D_(0.5)達(dá)到64.02μm。當(dāng)n=4,b×h和dL保持不變時(shí),PSD和D_(0.5)基本不變,SMD隨氣液比q_(mG)/q_(mL)的增加由64.07μm變至60.65μm。而且,DCD由φ640mm增至φ800 mm。
[Abstract]:The performance of the atomizing nozzle is directly dependent on the average particle size of Sotheer, droplet size distribution PSD and droplet coverage diameter DCD. The relationship between nozzle structure and atomization performance was investigated by using cold model experiment and two-channel airflow MTP reaction atomization nozzle as the research object. The variation of SMD-PSD and DCD of nozzle with different swirl structures under different gas-liquid ratios (Q / Q / M / L) has been studied. The results show that the size and structure of swirl channel and the inner diameter of liquid channel dL have significant effects on SMD-PSD and DCD. When the nozzle structure parameters are as follows: swirl channel number n ~ 2, swirl channel size b 脳 h=0.5mm 脳 1.0 mm, liquid channel diameter dL=1.0 mm, with the increase of Q / M GG / Q _ S _ (mL) from 8.70 to 20.32, the corresponding SMD of the nozzle is reduced from 20.02 渭 m to 17.88 渭 m, the particle size distribution of droplet is between 9.91 渭 m and 48.8 渭 m, and the characteristic median diameter is 21.45 渭 m. The SMD decreased from 62.48 渭 m to 58.89 渭 m and from 63.02 渭 m to 59.39 渭 m, respectively, and the particle size distribution of the droplets widened to 64.02 渭 m, ranging from 34.3 渭 m and 111.6 渭 m to 64.02 渭 m, respectively, when the size distribution of the droplets decreased from 1.5 mm 脳 2.0 mm and 2.0 mm 脳 2.0 mm to 2.5 mm. The SMD decreased from 62.48 渭 m to 58.89 渭 m and 59.39 渭 m from 63.02 渭 m to 59.39 渭 m, respectively. The SMD is almost unchanged with the increase of gas / liquid ratio (Q / M / Q / Q / M) from 64.07 渭 m to 60.65 渭 m. Moreover, DCD increased from 蠁 640mm to 蠁 800mm.
【作者單位】： 神華寧夏煤業(yè)集團(tuán)有限責(zé)任公司研發(fā)中心;中國船舶重工集團(tuán)公司第七一一研究所;
【基金】：國家國際科技合作專項(xiàng)項(xiàng)目(2015DFA40660) 寧夏回族自治區(qū)寧東能源化工基地科技創(chuàng)新項(xiàng)目(2014NDKJ100) 中國科學(xué)院2014年度“西部之光”人才培養(yǎng)計(jì)劃
【分類號(hào)】：TQ051.73

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