330MW火电机组脱硫系统供浆量自动控制技术设计

本文通过具体工程概况分析出利用定量计算和PID闭环控制可以有效实现330MW火电机组脱硫系统供浆量自动控制,提高了脱硫工艺控制的可靠性,减少了人为因素导致的脱硫净烟气SO2超标事故。     

T305脱硫剂脱除H_2S的宏观动力学研究（Ⅱ）脱硫动力学模型及颗粒曲节因子

用热重法研究了Ｔ３０５脱硫剂在２００～４００℃脱除Ｈ＿２Ｓ反应的宏观动力学行为。用粒子模型的正交配置解处理实验结果表明，粒子模型可以用来描述该脱硫过程。估算了颗粒曲节因子和烧结效应系数，分析了烧结及扩散过程对反应行为的影响。     

某铁精矿浮选柱脱硫试验研究

采用浮选柱对某铁矿选矿厂生产的含硫量超过0.4%的磁铁矿精矿进行了脱硫试验研究。通过实验室浮选柱系统试验,确定了较理想的试验参数:磨矿细度-200目占96.8%以上,黄药用量240 g/t,硫化钠用量800g/t,硫酸铜用量200 g/t,2#油用量200 g/。t在此条件下,浮选柱经一次分选能够将铁精矿中硫含量降至0.084%。而浮选机经一次粗选、两次精选、一次扫选,所得铁精矿中硫品位仍在0.20%以上。     

微波联合碱液煤炭脱硫研究

采用微波联合碱液的方法进行煤炭脱硫实验研究,考察了煤炭粒度、碱液浓度、辐照时间、微波功率对脱硫效果的影响,以及脱硫前后煤中矿物质与含硫官能团的变化。结果表明:在所选择的参数范围内,脱硫率随着煤炭粒度的减小而增大,随着碱液浓度、辐照时间、微波功率的增大而增大。XRD分析表明,脱硫后煤中矿物质种类未发生显著变化,但含量明显降低。红外光谱分析表明,脱硫后煤的整体结构未发生显著变化,但含硫官能团吸收峰明显减弱。     

氧化亚铁硫杆菌固定化技术及其应用

氧化亚铁硫杆菌是一种重要的浸矿细菌,细胞固定化技术能将该菌限定在特定的区域内,增加细菌密度,有效提高其对Fe2+及低价态硫的氧化能力,且能提高细菌的稳定性和机械强度,并简化浸矿生产条件,最终提高工业生产的经济效益。该技术运用的材料包括有机材料、无机材料和人工合成材料;涉及到的固定化方法包括吸附法、包埋法、交联法、新固定化法等。固定化氧化亚铁硫杆菌技术在生物浸矿和生物脱硫领域具有良好的应用前景,该技术的发展为其实现产业化奠定了基础。     

Effect of cobalt modification onto a Beta zeolite for the direct catalytic decomposition of dimethyl sulfide

For the development of small-scale desulfurization processes such as fuel cell systems, catalytic decomposition of dimethyl sulfide (DMS) to H₂S without H₂ addition was investigated using a Co/H-Beta zeolitic catalyst, with its acidity controlled via post-synthesis modification. The protonated zeolite (H-Beta) exhibited little catalytic activity at 400 °C, but Co modification significantly promoted DMS decomposition, with a high H₂S yield of 50% observed. The optimum Co amount was equivalent to half of the ion-exchange capacity of the original H-Beta zeolite. While the Co/SiO₂ did not display catalytic activity, and thus, the coexistence of acid and Co ion sites is necessary in DMS decomposition. The Co species were introduced at the cation sites of the zeolite, suppressing Co sulfurization, which contributed to the high catalytic activity.     

等离子体技术在鞘氨醇单胞菌脱硫废乳胶中的应用

采用等离子体技术对废乳胶进行预处理,利用鞘氨醇单胞菌对其进行脱硫,考察等离子体预处理前后废乳胶亲水性的变化,研究等离子体预处理对废乳胶脱硫效果的影响。结果表明:经等离子体预处理后,废乳胶表面亲水性明显改善;与直接脱硫的废乳胶相比,等离子体预处理后再脱硫的废乳胶表面的砜类基团明显增多,硫质量分数减小,氧质量分数显著增大,硫-氧键含量明显增大,且交联密度明显降低;等离子体预处理能够有效促进废乳胶的微生物脱硫,明显改善脱硫效果。     

钙基吸收剂脱硫反应特性的研究

本文对两种钙基吸收剂－ＣａＯ和Ｃａ（ＯＨ）２的脱硫反应机理进行了试验研究。对两者的反应活性进行了比较，并就一些因素对脱硫活性和影响作了研究，所得结论对脱硫反应的优化，脱硫剂的选择及干法ＦＧＤ装置的开发和研制有参考意义。     

The adsorption of PAHs, BTEX, and heavy metals on surfactant-modified desulfurization sorbents in a dry scrubber

The injection of dry Ca-based sorbents for removing acid gases had been investigated previously. However, the utilization of Ca-based sorbents for adsorbing other air pollutants was rarely examined. The objective of this study was to investigate the reduction of organic compounds polycyclic aromatic hydrocarbons (PAHs) and benzene, toluene, ethylbenzene, and xylene (BTEX) and heavy metals by using the desulfurization sorbents in a dry scrubber integrated with a fabric filter. Four surfactants, calcium lignosulfonate, sodium lignosulfonate, alkyl naphthalene sodium sulfonate and β-naphthalene sodium sulfonate condensates, were used as additives to modify the surface characteristics of desulfurization sorbent calcium hydroxide (Ca(OH)₂). Modifying the desulfurization sorbents with surfactants showed different effects on removal of PAHs, BTEX, and heavy metals, and exploited the potential of Ca-based sorbents for adsorbing air pollutants other than SO₂.     

复合式干选机应用的状况分析

通过对同煤集团煤气厂FGX-6分选机实际运用分析,指出了该机的工作原理及优缺点,供改造干选机时参考。