發(fā)布時間：2018-12-11 10:20

【摘要】：采用現(xiàn)場工程試驗方法對德士古水煤漿氣化爐協(xié)同處置煤液化殘渣(CLR)過程中多環(huán)芳烴(PAHs)的排放特征及環(huán)境風(fēng)險進行了系統(tǒng)研究,通過對空白工況(不混磨CLR制漿)和協(xié)同處置工況(混磨15%CLR制漿)下,氣化爐內(nèi)溫度、壓力與合成氣組分變化及所有排放節(jié)點固態(tài)液態(tài)氣態(tài)排放物中16種PAHs含量及毒性當(dāng)量濃度分析,評估CLR協(xié)同處置過程中PAHs的環(huán)境風(fēng)險及該技術(shù)的可行性.結(jié)果表明:德士古水煤漿氣化爐協(xié)同處置15%液化殘渣過程對氣化爐自身產(chǎn)氣量及壓力無顯著影響,爐內(nèi)溫度升高5~11℃,對H2和CO的產(chǎn)生具有促進作用;協(xié)同處置過程造成部分氣態(tài)排放產(chǎn)物和液態(tài)排放物中PAHs含量增加,但增幅很小,且毒性當(dāng)量濃度也遠(yuǎn)低于標(biāo)準(zhǔn)限值,新增環(huán)境風(fēng)險很小;協(xié)同處置過程使固態(tài)排放產(chǎn)物中PAHs含量顯著增加,但總毒性當(dāng)量濃度依然較低,固態(tài)產(chǎn)物中PAHs的排放風(fēng)險在可接受的范圍內(nèi).
[Abstract]:In this paper, the emission characteristics and environmental risk of polycyclic aromatic hydrocarbons (PAHs) (PAHs) in Texaco coal water slurry gasifier (Texaco coal slurry gasifier) in the process of coal liquefaction residue (CLR) disposal are studied systematically by using field engineering test method. The temperature of gasifier under blank condition (unmixed mill CLR pulping) and synergistic disposal condition (mixed-mill 15%CLR pulping) was studied. The changes of pressure and composition of syngas and the analysis of 16 kinds of PAHs content and toxic equivalent concentration in the solid liquid gaseous emissions of all emission nodes were carried out to evaluate the environmental risk of PAHs in the process of co-disposal of CLR and the feasibility of the technology. The results show that the combined treatment of 15% liquefied residue by Texaco coal water slurry gasifier has no significant effect on the gas production and pressure of the gasifier, and the temperature in the gasifier is increased by 5 ~ 11 鈩，

本文編號：2372369