【摘要】：采用現場工程試驗方法對德士古水煤漿氣化爐協同處置煤液化殘渣(CLR)過程中多環芳烴(PAHs)的排放特征及環境風險進行了系統研究,通過對空白工況(不混磨CLR制漿)和協同處置工況(混磨15%CLR制漿)下,氣化爐內溫度、壓力與合成氣組分變化及所有排放節點固態液態氣態排放物中16種PAHs含量及毒性當量濃度分析,評估CLR協同處置過程中PAHs的環境風險及該技術的可行性.結果表明:德士古水煤漿氣化爐協同處置15%液化殘渣過程對氣化爐自身產氣量及壓力無顯著影響,爐內溫度升高5~11℃,對H2和CO的產生具有促進作用;協同處置過程造成部分氣態排放產物和液態排放物中PAHs含量增加,但增幅很小,且毒性當量濃度也遠低于標準限值,新增環境風險很小;協同處置過程使固態排放產物中PAHs含量顯著增加,但總毒性當量濃度依然較低,固態產物中PAHs的排放風險在可接受的范圍內.
[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，

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