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Emission Characteristics of Organic Pollutants during Coprocessing of Coal Liquefaction Residue in Texaco Coal–Water Slurry Gasifier
Energy & Fuels ( IF 5.2 ) Pub Date : 2018-01-23 00:00:00 , DOI: 10.1021/acs.energyfuels.7b03395
Xuebing Li 1, 2 , Li Li 1, 2 , Zechun Huang 1, 2 , Dahai Yan 1, 2 , Hongjin Yu 1, 2 , Jie He 1, 2
Energy & Fuels ( IF 5.2 ) Pub Date : 2018-01-23 00:00:00 , DOI: 10.1021/acs.energyfuels.7b03395
Xuebing Li 1, 2 , Li Li 1, 2 , Zechun Huang 1, 2 , Dahai Yan 1, 2 , Hongjin Yu 1, 2 , Jie He 1, 2
Affiliation
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Field tests were conducted to research the emission characteristics and environmental risk of organic pollutants during coprocessing of coal liquefaction residue (CLR) in Texaco coal–water slurry gasifier. Changes of temperature, pressure, and syngas composition in the gasifier were recorded under blank condition (without mixing CLR in the slurry) and test condition (15% CLRs were mixed into the slurry). Also the toxicity equivalent concentration of 16 kinds of polycyclic aromatic hydrocarbons (PAHs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) and the concentration of volatile organic compounds (VOCs) in all the solid waste, liquid, and gas emissions under two conditions were analyzed. Results showed that, during the coprocessing process, the pressure and syngas production of the gasifier were essentially unaffected and the temperature in the gasifier increased 5–11 °C and promoted the formation of H2 and CO. The concentration of PAHs in part of the gas emission, liquid emission, and solid waste increased 1.0–1.3 μg/m3, 19 ng/L, and 1.4–2.3 mg/kg, respectively, during the coprocessing process, but the total toxicity equivalent concentrations were still far lower than relevant standard limits; the emission of PAHs during coprocessing of CLR in Texaco coal–water slurry gasifier has low environmental risk. The concentration of PCDD/Fs in liquid emission and solid waste decreased 0.002 ng of total equivalent quantity (TEQ)/L and increased 0.0002 μg of TEQ/kg, respectively; the environmental risk was rather low. The concentrations of VOCs in gas samples were far below the blank condition under test condition and were mostly not detected or below the detection limits in the liquid emission and solid waste, and VOCs emission in the coprocessing process has low environmental risk.
中文翻译:
德士古水煤浆气化炉煤液化残渣共处理过程中有机污染物的排放特征
进行了田间试验,以研究德士古水煤浆气化炉中煤液化残渣(CLR)协同处理过程中有机污染物的排放特征和环境风险。在空白条件下(在浆液中未混合CLR)和测试条件(在浆液中混合15%CLR),记录气化炉中温度,压力和合成气组成的变化。也16种多环芳烃(PAHs的)的毒性当量浓度,多氯联苯二苯并p分析了两种条件下所有固体废物,液体和气体中的二恶英(PCDDs)和多氯二苯并呋喃(PCDFs)以及挥发性有机化合物(VOCs)的浓度。结果表明,在协同处理过程中,气化炉的压力和合成气产量基本未受影响,气化炉中的温度升高了5-11°C,并促进了H 2和CO的形成。气体排放,液体排放和固体废物增加了1.0–1.3μg/ m 3在共处理过程中,分别为19 ng / L和1.4–2.3 mg / kg,但总毒性当量浓度仍远低于相关标准限值。德士古水煤浆气化炉CLR协同处理过程中PAHs的排放具有较低的环境风险。液体排放和固体废物中PCDD / Fs的浓度分别降低了0.002 ng总当量(TEQ)/ L和0.0002μgTEQ / kg。环境风险很低。在测试条件下,气体样品中的VOCs浓度远低于空白条件,并且大多数未检测到或低于液体排放物和固体废物中的检测极限,并且协同处理过程中的VOCs排放具有较低的环境风险。
更新日期:2018-01-23
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
德士古水煤浆气化炉煤液化残渣共处理过程中有机污染物的排放特征
进行了田间试验,以研究德士古水煤浆气化炉中煤液化残渣(CLR)协同处理过程中有机污染物的排放特征和环境风险。在空白条件下(在浆液中未混合CLR)和测试条件(在浆液中混合15%CLR),记录气化炉中温度,压力和合成气组成的变化。也16种多环芳烃(PAHs的)的毒性当量浓度,多氯联苯二苯并p分析了两种条件下所有固体废物,液体和气体中的二恶英(PCDDs)和多氯二苯并呋喃(PCDFs)以及挥发性有机化合物(VOCs)的浓度。结果表明,在协同处理过程中,气化炉的压力和合成气产量基本未受影响,气化炉中的温度升高了5-11°C,并促进了H 2和CO的形成。气体排放,液体排放和固体废物增加了1.0–1.3μg/ m 3在共处理过程中,分别为19 ng / L和1.4–2.3 mg / kg,但总毒性当量浓度仍远低于相关标准限值。德士古水煤浆气化炉CLR协同处理过程中PAHs的排放具有较低的环境风险。液体排放和固体废物中PCDD / Fs的浓度分别降低了0.002 ng总当量(TEQ)/ L和0.0002μgTEQ / kg。环境风险很低。在测试条件下,气体样品中的VOCs浓度远低于空白条件,并且大多数未检测到或低于液体排放物和固体废物中的检测极限,并且协同处理过程中的VOCs排放具有较低的环境风险。