火电领域石灰石湿法脱硫技术的应用进程研究

文章梳理了近30年石灰石-石膏湿法脱硫技术在火电厂烟气治理方面的发展,阐述了取消回转式烟气-烟气换热器(或称回转式GGH)、取消旁路烟道、引风机与脱硫增压风机合并(或称引增合一)、增容提效、超低排放、烟气节水、烟气"脱白"等发展节点,并给出了各阶段技术革新的前因后果,从而得出脱硫技术是在火电企业发展、环保意识增强、上下游技术进步等多重因素的共同影响下不断发展壮大的。     

PXJ型高效脱硫除尘设备

由湖南麓南脱硫除尘设备有限公司开发的PXJ型高效脱硫除尘设备，适用于火电、化工、冶金、建材、轻工等行业的工业烟气治理。     

湿式镁法烟气脱硫技术发展综述

介绍了湿式镁法烟气脱硫工艺的历史,评述了国内镁法烟气脱硫技术的发展现状,以及镁法烟气脱硫副产物的利用。     

石灰石(石灰)/石膏湿法烟气脱硫金属浆液循环泵国产化研究及应用

本文介绍了襄樊五二五泵业有限公司开发的烟气脱硫金属浆液循环泵的水力模型、结构、机械密封、材料的研究成果，证明了我国50M～600MW火电机组湿法脱硫装置的各种金属浆液循环泵已可实现国产化。     

镁法烟气脱硫技术在燃煤电厂的应用

以华能辛店电厂氧化镁法烟气脱硫工程为例,介绍了镁法烟气脱硫技术在燃煤电厂中的应用,指出氧化镁烟气脱硫技术适合高硫煤烟气脱硫项目,符合国家循环经济发展要求,对改变我国脱硫行业过于单一地采用石灰石/石膏(钙)法脱硫工艺现状具有现实意义.     

凌钢烧结烟气脱硫技术探讨

介绍了我公司烧结烟气特点、SO2的来源，并根据国内外烟气脱硫技术现状，提出了烧结烟气脱硫的技术要求。     

冶炼行业非稳态低浓度SO2废气治理技术及设备

由云南亚太环境工程设计研究有限公司开发的冶炼行业非稳态低浓度SO2废气治理技术及设备适用于有色冶金、钢铁烧结、燃煤锅炉、火电烟气脱硫中的不同工况、不同浓度、稳态和非稳态烟气SO2的脱除。     

我国非火电烟气脱硫行业发展综述

综述了我国非火电烟气脱硫行业的发展概况,介绍了行业目前采用的主要技术,分析了行业的市场特点及存在的主要问题,并对行业的发展进行了展望。     

我国中,小型工业锅炉的烟气脱硫

本文基于对我国环保市场的调查，分析了国内外工业锅炉的烟气脱硫现状，指出了我国目前中、小型工业锅炉烟气脱硫技术的特点及存在的问题，并就我国中、小型工业锅炉的烟气脱硫提出了初步的看法。     

我国火电厂大气污染防治现状分析

针对火电厂烟气中烟尘、SO和NO的环保超低排放要求,本研究对全国80家火电厂、287台燃煤机组进行了大气污染防治现状调研,结果显示,73.7%机组SCR出口NO排放浓度在100mg/m~3以下,68.3%机组除尘器出口烟尘浓度在30mg/m~3以下,81.4%机组脱硫装置出口SO排放浓度在200mg/m~3以下;55台机组实施了超低排放改造。根据调研情况及现有工程案例,提出了火电机组实现超低排放采取的技术路线:SCR脱硝增效+ESP除尘增效+FGD脱硫增效+WESP除尘,最后给出了火电行业实施超低排放的建议。     

烟气海水脱硫排水水质对周边海域的影响分析

从理论计算和国内外已投运工程的实际运行监测两方面,对海水脱硫排水水质进行了分析,结果表明在采用成熟工艺的前提下,海水脱硫的排水水质包括重金属等指标,全部可以达到我国海水三类标准,绝大部分指标满足海水一类标准,而且通过对国内外已经投运项目的长期监测,也未发现对周围海域的生态环境造成不利影响。     

氨法烟气脱硫工艺在燃煤锅炉的应用

介绍了氨法脱硫技术在国内外的应用情况以及氨法烟气脱硫工艺的工作原理和工程应用难点;分析了热电厂煤粉锅炉烟气脱硫的工艺路线特点及新型氨法脱硫工艺应用后取得了的显著效果;提出了氨法脱硫工艺存在的问题和发展前景。     

新疆火电行业SO2排放现状及控制对策

新疆火电行业是新疆SO2排放大户,其排放量占全疆工业SO2排放量的43.4%,且有逐年递增的趋势,而其去除率却一直处于较低水平.乌鲁木齐华电红雁池电厂等5家火电厂SO2的排放量排在新疆火电行业之首,应而需将这5家火电厂SO2排放作为重点监控对象,并提出了火电厂减排SO2的几点对策和建议.     

Assessing Health Benefits of Controlling Air Pollution from Power Generation: The Case of a Lignite-Fired Power Plant in Thailand

The impact pathway approach (IPA) is used to estimate quantitatively the level of health effects caused by particulate matter (PM₁₀) and sulfur dioxide (SO₂) emission from a lignite-fired power plant located in the Mae Moh area in northern region of Thailand. Health benefits are then assessed by comparing the levels of estimated health impacts without and with the installation of the flue gas desulfurization (FGD) equipment. The US EPA industrial source complex model is used to model air pollution dispersion at the local scale, and the sector average limited mixing meso-scale model is used to model air pollution transport at the regional scale. The quantification of the health end points in physical terms is carried out using the dose–response functions established recently for the population in Bangkok, Thailand. Monetarization of these effects is based on the benefit transfer method with appropriate adjustment. Finally, it has been found that the installation of the FGD to control SO₂ emission at Mae Moh significantly reduces adverse health effects not only on the population living near the power plant but also all over the country. A FGD unit installed at the 300-MW power unit can result, on average, in 16 fewer cases of acute mortality, 12 fewer cases of respiratory and cardiac hospital admissions, and almost 354,000 fewer days with acute respiratory symptoms annually. In monetary terms this benefit is equivalent to US $18.2 million (1995 prices) per annum. This benefit is much higher than the annualized investment and operation costs of FGD (US $7.4 million/yr).     

广东省火电厂烟气脱硫装置的经济技术分析

简要介绍了广东省7个火电厂现有的5种烟气脱硫技术装置：海水脱硫、荷电干式烟气脱硫、湿式石灰石／石膏法烟气脱硫、DCL燃煤固硫剂脱硫及烟气循环流化床脱硫技术，对它们的经济、技术性进行了分析比较。     

Assessing the current practice and policy with recommendations for emission control strategy for coal‐fired thermal power plants under Indian regulatory framework emphasizing the roles of R&D

On December 7, 2015, the Ministry of Environment, Forest and Climate Change (MoEFCC), Government of India (GoI), promulgated stack emission standards for sulfur dioxide (SO₂), oxides of nitrogen (NO_x), and mercury (Hg) from coal‐fired thermal power plants (TPPs). These standards were promulgated in addition to tightening the emission standard for particulate matter. Thus far, the GoI and a non‐governmental organization (NGO) have recommended the use of limestone‐based flue‐gas desulfurization (FGD) technology for removing only SO₂ emissions, which would then require the application of additional technologies to remove the other regulated pollutants. A single technology, such as the Multi‐pollutants Control Technology (MPCT), which was recently developed elsewhere in the world and can remove all of the pollutants from the TPP, could be more economical than introducing separate technologies for the removal of each pollutant. Furthermore, unlike the limestone‐based FGD technology, which generates carbon dioxide (CO₂) during the desulfurization process, the MPCT does not increase power plant CO₂ emissions. Water consumption is also lower in MPCT than with the limestone‐based FGD technology. Thus, MPCT offers a lower carbon footprint as well as a lower water footprint than the limestone‐based FGD technology in accordance with the United Nations Environmental Programme's Sustainable Development Goals. In light of these observations, this article aims to assess current practices and policies and offers policy recommendations for Indian TPPs with the goal of providing a cogent technological solution that also strengthens the Decision Support System for the holistic protection of the Indian environment.     

燃煤电厂烟气脱硫主要工艺

简要介绍燃煤电厂烟气脱硫（FGD）的湿法，半干法，干法，可回收工艺和联合SO2／NOx工艺等五类主要工艺，并对我国烟气脱硫技术的进展进行了探讨，指出我国烟气脱硫技术的发展应走国产化的道路。     

Some observations on the environmental impact of the UK flue gas desulphurisation programme

Summary Concern about the environmental damage caused by acid deposition has lead to national programmes to reduce acid precursor emissions. In the UK, a retrofit programme of flue gas desulphurisation (FGD) to three 2,000 MW coal-fired power stations has been announced, with up to four new stations equipped with FGD likely to follow by the year 2000. Whilst the positive effects of acid deposition abatement are recognised there has been considerable concern over the negative aspects of the programme arising, particularly, from the raw material requirements of an FGD plant and the need to dispose of waste products. A careful choice of the most appropriate technology can significantly reduce the negative impacts but such a choice can only be made after an environmental assessment of the national FGD programme.Dr James Longhurst is the Director of the Acid Rain Information Centre at Manchester Polytechnic. The centre is supported by the Association of Greater Manchester Authorities and the Department of the Environment.     

Study of boron behaviour in two Spanish coal combustion power plants

A full-scale field study was carried out at two Spanish coal-fired power plants equipped with electrostatic precipitator (ESP) and wet flue gas desulfurisation (FGD) systems to investigate the distribution of boron in coals, solid by-products, wastewater streams and flue gases. The results were obtained from the simultaneous sampling of solid, liquid and gaseous streams and their subsequent analysis in two different laboratories for purposes of comparison. Although the final aim of this study was to evaluate the partitioning of boron in a (co-)combustion power plant, special attention was paid to the analytical procedure for boron determination. A sample preparation procedure was optimised for coal and combustion by-products to overcome some specific shortcomings of the currently used acid digestion methods. In addition boron mass balances and removal efficiencies in ESP and FGD devices were calculated. Mass balance closures between 83 and 149% were obtained. During coal combustion, 95% of the incoming boron was collected in the fly ashes. The use of petroleum coke as co-combustible produced a decrease in the removal efficiency of the ESP (87%). Nevertheless, more than 90% of the remaining gaseous boron was eliminated via the FGD in the wastewater discharged from the scrubber, thereby causing environmental problems.     

烟气脱硫新技术探讨

本文主要讨论了几种新型脱硫技术的脱硫原理和工艺,并对各项技术的综合性能进行了评价。同时,还指出烟气脱硫工艺的国产化是经济、有效减轻SO_2污染的必然趋势。