液相生化法烟气脱硫的研究--原理及前景

概述生物法脱硫的历史及现状以及微生物法脱硫和过渡金属Fe3+/Fe2+的催化氧化脱硫机理,提出了液相生化法烟气脱硫的崭新构想,即合理地把微生物代谢和Fe3+催化氧化脱硫结合起来,可以有效地降低SO2的排放量.     

烟气脱硫技术研究与进展

通过对传统的几种典型脱硫方法的介绍，分析了影响脱硫效率和脱硫剂利用率的各种因素，并介绍了几种新型的脱硫工艺和技术。重点叙述了循环流化床烟气脱硫技术和微生物脱硫技术。文章还对今后烟气脱硫技术的发展趋势进行了简要的分析。     

燃煤锅炉烟气脱硫废水处理技术研究进展

总结了烟气脱硫(WFGD)废水的处理治疗技术特点,为WFGD废水的未来发展提供了一定之道。阐明了WFGD废水处理特性及其对工厂废水系统的关键影响。据认为,脱硫废水处理技术一般分为四类,即传统处理技术,如化学沉淀,微生物处理,废热烟气蒸发利用等技术处理,同时期待中国脱硫废水处理的未来发展。     

石灰石——石膏湿法烟气脱硫工艺不宜安装烟气换热器

近年来火电厂烟气脱硫(FGD)设施建设不断加快,目前国内外已开发的烟气脱硫技术中,研制出的石灰石—石膏烟气脱硫湿法工艺已成为我国燃煤电厂烟气脱硫的首选工艺。针对烟气脱硫湿法工艺是否需要进行烟气升温(即烟气脱硫是否需加装烟气换热器)的有关问题,文章进行了讨论并提出了建议。     

方元电力来宾电厂:白泥脱硫“以废治废” 创新循环经济产业链

正目前,国内火电企业烟气脱硫的技术有石灰石—石膏法脱硫、氨法脱硫、循环硫化床脱硫、双碱法脱硫等,我厂及代运营的来宾B电厂共5套烟气脱硫装置,均采用的是石灰石—石膏法脱硫工艺,其脱硫剂为石粉。烟气脱硫装置投运以来,我们在确保烟气达标达效的前提下,一直致力寻求新技术,提     

火电厂石灰石-石膏法与海水法烟气脱硫的比较

介绍了我国火力发电厂烟气脱硫技术众多方法中,石灰石-石膏法烟气脱硫和海水法烟气脱硫这两种最常用的湿法烟气脱硫工艺。通过对这两种方法的工艺特点、主要设计参数、主要设备及构筑物、投资等多方面的比较,阐明了我国火力发电厂烟气脱硫工程中这两种最常用脱硫方法各自的特点和系统优缺点。     

电石渣在电厂烟气脱硫中的应用

二氧化硫是大气的主要污染物之一,火电厂采用烟气脱硫系统可以大大减少二氧化硫的排放,电石渣作脱硫剂,可以应用于不同的脱硫工艺中.通过对电石渣物理性质、消溶特性及脱硫机理的分析,主要介绍了在湿法烟气脱硫、半干法烟气脱硫、干法烟气脱硫和循环流化床炉内脱硫工艺巾的应用,对特定行业的脱硫改造有很好的借鉴意义.     

湿法脱硫系统中降低进口烟气温度节水的分析与试验

分析了湿法脱硫系统中水蒸气温度的变化规律,计算了不同进口烟气温度对应的饱和水蒸气温度,定量计算和比较了降低进口烟气温度前后的耗水量,并给出了相应的试验数据.结果表明:脱硫塔内的烟气脱硫是在水蒸气饱和状态的饱和温度下进行的;当烟气进口温度不同时,对应的烟气饱和温度也不同,导致脱硫塔内的烟气脱硫温度不同;在烟气脱硫系统中加装烟气冷却器能有效减少烟气降温所需汽化水的耗量,从而减少脱硫系统水耗量,达到节水目的.     

干法/半干法烟气脱硫灰化学组成计算模型研究

随着干法/半干法烟气脱硫工艺的推广应用,其脱硫副产物-脱硫灰的排放数量也会大幅度增加。脱硫灰的综合利用是目前的研究热点。脱硫灰的性质在很大程度上取决于脱硫工艺,结合烟气脱硫的实际工艺特点,从理论上推导出不同干法/半干法烟气脱硫工艺脱硫灰的组成计算模型,并进行了实例计算。这些计算模型对于烟气脱硫灰处理系统的设计、掌握脱硫灰组成变化、脱硫灰的应用都具有重要的参考价值。     

锅炉烟气脱硫技术进展

简要介绍了烟气脱硫技术的分类，以及几种主要的湿法、干法、半干法烟气脱硫技术的主要特点。对不同的烟气脱硫技术的优缺点也作了简单评述。同时概述了目前国内外烟气脱硫技术应用和开发进展情况，对我国烟气脱硫技术的发展提出了建议．     

Fueling power plants with high sulfur coal in compliance with emission standards

We compare the economics of the two most advanced strategies for meeting current SO₂ emission standards in power plants fueled with high sulfur coal. One strategy calls for converting high sulfur coals to clean synfuels before combustion. The other involves direct coal burning, followed by fuel gas desulfurization (FGD). Our results show that the FGD route is preferable.Advantages of FGD over the coal conversion route are the following. The total capital and operating costs for FGD are almost an order of magnitude lower, thermal efficiencies are higher, and utility requirements are lower. The FGD systems have been in operation since 1968 and, after initial problems, have been operated reliably and at availability acceptable to the utility industry. About 80% of existing power plants, according to one survey, can be retrofitted with FGD. Even with possible breakthroughs in coal-conversion technologies, it appears that FGD will remain the economically preferred route to desulfurization.     

Meeting emission standards with high-sulfur coals

The economics of strategies for meeting sulfur oxides (SO_x) emission standards from furnaces fueled with high-sulfur coals has been assessed based on published data. The strategy of SO_x control depends on how the coal is utilized. For large power plants, flue-gas desulfurization (FGD) is preferable to conversion of coal to clean fuel. In comparison with coal conversion, the total capital and operating costs for FGD are almost an order of magnitude lower, thermal efficiencies are higher, and utility requirements are lower. Even with possible breakthroughs in coal-conversion technologies, it appears that FGD will remain the economically preferred route to desulfurization. FGD has been in commercial operation since 1968, and the reliability of the process has reached an acceptable level. For industrial furnaces, direct combustion is preferred to gasification because gasification is inherently expensive. Fluidized-bed combustion is the only viable option for clean direct combustion of coal in small industrial furnaces. Fluidized-bed combustion has reached commercial status and is economically competitive in many parts of the world. For furnaces requiring gaseous or liquid fuels, gasification to medium-Btu gas is preferred. For domestic and commercial uses, coal can be gasified to clean, low-Btu gas. This is an old process and might be amenable to cost reduction through application of new technologies. The only other economically viable approach involves the production of clean solid fuel by compounding coal with additives such as limestone and manganese nodules.     

水处理固体废物用作燃煤脱硫添加剂的实用性

水处理固体废物用作燃煤脱硫添加剂的机理及实验研究表明，水处理固体废物可以有效地催化脱硫反应，减缓高温下CaSo4分解速度，使燃煤脱硫过程的最佳脱硫温度更接近煤的燃烧温度，提高燃煤脱硫效率及钙利用率；其用作燃煤脱硫添加剂进行脱硫，实施系统及流程简单，既能减少水处理固体废物排放量，减轻对水体的污染，也能有效地减少燃煤SO2的排放量。     

水煤浆与煤粉燃烧脱硫比较

以煤代油是能源工业的发展方向。作为新型代油燃料,水煤浆有广阔的应用前景。从硫析出特点、脱硫影响因素（温度、Ｃａ／Ｓ比）以及烟尘排放等方面,研究了水煤浆燃烧脱硫与煤粉燃烧脱硫的异同。试验结果表明水煤浆燃烧脱硫优于煤粉,是值得推广的脱硫技术。     

600MW机组FGD系统运行问题及解决

介绍了广东珠海金湾发电有限公司2×600MW超临界燃煤机组配套的石灰石/石膏湿法烟气脱硫(FGD)装置,包括主要设计参数、流程及组成部分等。重点分析了FGD系统在运行中存在的煤质变化大、除雾器堵塞、GGH堵塞等问题及其解决措施,通过不断完善和解决这些问题,为FGD系统安全、经济运行提供了保障,可为同行提供有益借鉴。     

水煤浆在陶瓷辊道窑上燃烧的脱硫过程研究

对水煤浆在陶瓷辊道窑上燃烧时的自身脱硫过程进行了研究,建立了相应的脱硫过程数学模型。计算和实验表明：水煤浆燃烧时具有良好的自身脱硫效果,其脱硫效率大大优于煤粉燃烧时的情况。还分析了陶瓷辊道窑上燃烧水煤浆时的最佳脱硫条件。     

煤泥流化床燃烧脱硫试验研究

以石灰石为脱硫剂，通过大型流化床试验台研究了钙硫比，脱硫剂粒度、床层温度等参数对煤泥流化床燃烧脱硫效率的影响，为实现煤泥流化床洁净燃烧提供依据。     

高钙煤灰颗粒与液滴碰撞增湿脱硫过程的模型研究

为模拟增湿活化反应器内高钙煤灰颗粒的增湿脱硫过程，采用随机轨道模型分别跟踪颗粒群与液滴群，以相邻单元间26条颗粒流通道模型统计未增湿条件下的初始颗粒流量，以液滴群的空间单元捕捉效率为单元体内颗粒流量守恒方程的源项(汇)系数，来迭代各单元通道上的未增湿颗粒流量，耦合煤灰颗粒与液滴群的碰撞过程。并进一步考虑反应器内气、液、固多相湍流物理化学反应过程，建立了三维场内高钙煤灰低温增湿脱硫总体模型，初步预测了高钙煤灰增湿脱硫过程，模型预测与试验结果具有很好的吻合特性。图10参9。     

Adoption of SO2 emission control technologies - An application of survival analysis

Using data on coal-fired electric power plants, this article investigates the contributing factors affecting the investment decisions on flue-gas desulfurization (FGD), a capital-intensive emission control technology. The paper makes two contributions to the literature. First, the public regulatory status of electric power plants is found to have a strong influence on whether FGD investment is made. Compared to deregulated power plants, those that are still under rate-of-return regulations by Public Utility Commissions are more likely to install FGD. Second, a higher rate of inspections of polluting facilities (not just electric utility power plants) in a state in the previous year is associated with a higher probability of power plants adopting FGD this year. In addition, sulfur content of coal and plant size are both positively associated with the likelihood of FGD installation. The service length of boilers is negatively associated with the likelihood.     

烟气脱硫添加增效剂的试验分析

针对湿法烟气脱硫(FGD)装置在运行中存在承受高硫烟气能力较弱、脱硫效率较低、吸收塔浆液pH值偏高等问题,进行了添加DSA-5060型脱硫增效剂与脱硫效率、浆液pH值等关键参数之间的试验。结果表明:添加增效剂后,提高了脱硫效率、降低了吸收塔浆液pH值,FGD设备结垢现象得到了改善。