中日合作高硫煤烟气脱硫技术试验情况的回顾

介绍了中日合作高硫煤烟气脱硫技术－－旋转喷雾法脱硫工艺的原理，工业试验的设备和系统，试验过程及结果，指出该脱硫装置在我国具有良好的应用前景。     

燃用高硫煤的湿法脱硫系统增效改造的探讨

针对电厂燃用高硫煤及环保排放标准日益严格的现状,对现有湿法脱硫系统的增效提升方案从可行性、可靠性、经济性等方面进行综合分析,研究了原塔改造方案、新增吸收塔方案(串联、并联)等,结合项目的现场实际表明,新增吸收塔串联技术具有较高的可靠性与经济性,适用于燃用高硫煤的脱硫改造应用。     

双塔双循环脱硫系统超低排放运行优化研究

双塔双循环石灰石—石膏湿法脱硫工艺适用于燃用高硫煤的超低排放机组,在低于设计煤质及低负荷的运行工况下,易出现循环浆液泵、氧化风机投运数量过多、运行能耗偏高等问题.对某电厂双塔双循环脱硫系统运行数据进行分析,研究了机组负荷、入口烟气S02浓度、浆液pH值、浆液循环泵投运组合等对脱硫效率和电耗的影响,提出了双塔双循环脱硫系...     

国外烟气脱硫技术应用进展

烟气脱硫是控制大气污染物排放、防止酸雨形成的重要措施。世界发达国家烟气脱硫技术成熟,应用较广。论述了常用的炼厂催化裂化装置烟气和热电厂锅炉烟气脱硫工艺的技术特点和应用情况。通过对炼厂催化裂化烟气脱硫常用的EDV技术、WGS技术、动力波逆喷塔技术等进行对比分析,认为EDV湿法洗涤技术压力降较小,对催化装置的各种事故工况有较强的适应性,能够实现长周期运行,预留的脱硝系统运行成本较高,建设周期短,占地面积小。WGS技术工艺建设周期短,占地面积小,由于需要大功率的循环浆液泵产生喷射流对烟气增压,在催化烟气携带大量催化剂等不正常工况下,对催化装置影响较大。动力波技术具有总投资费用和运行费用低,污水排放量少,占地面积小等优势。目前,在电厂烟气脱硫中技术较为成熟、应用业绩较好的脱硫工艺,主要有石灰石-石膏湿法、炉内喷钙法、半干法、氨法技术等,石灰石-石膏湿法脱硫工艺是最为成熟的烟气脱硫技术,国内外已有数百套装置投入商业运行,任何煤种均可采用这种脱硫方式,脱硫率高,单塔处理量大,对高硫煤、大机组更具有适用价值。     

国内外燃煤脱硫技术的现状及对策

介绍了目前国内外较成熟的几种主要的脱硫方法，提出对不同的燃煤选用不同的方法进行脱硫处理，改进脱硫技术和设备以提高脱硫效率，降低投资和运行成本，同时减少烟尘排放量，分析了脱硫技术的发展、应用前景及对环境的保护的意义。     

火力发电厂的脱硫技术问题及解决方案

从目前中国火力发电厂的脱硫现状和使用方法入手,提出了火力发电厂脱硫技术问题的解决方案,希望对中国火力发电厂的脱硫技术问题具有可以借鉴的意义。     

大型燃煤火电机组炉前脱硫试验研究

本文针对西南地区燃烧高硫煤的大型燃煤火电机组,开展炉前脱硫技术试验研究,在某火电厂搭建现场试验平台,采用浮沉筛分的方法对机组常用的不同含硫量的高硫煤进行现场试验,现场试验结果表明:采用炉前脱硫技术能够有效的降低入炉煤硫分,同时能够在一定程度上降低入炉煤的灰分,炉前脱硫技术对于燃煤机组防腐及减排以及设备运行安全都具有重要的作用,仅就所选用高硫煤而言,炉前脱硫能够将入场煤的硫分平均降低约39.12%,能够将入场煤的灰分平均降低约25.01%。     

高硫煤脱硫技术试验情况

中日合作在山东黄岛发电厂对燃用高硫煤的670t／h锅炉，采用半干式旋转喷雾法脱硫技术进行试验。文中介绍脱硫原理、设备概况、主要试验内容和结果，试验中出现的问题和解决措施，自1994年10月以来两年半的试验，保持脱硫烟气量25×104m3／h（标态），Ca／S为1．4，生石灰纯度70％，脱硫效率达到70％以上，达到预期试验目标。该脱硫法的能耗、水耗、电耗低，投资省，占地小，对现有机组改造较有吸引力。     

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。     

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．     

Ultrasonic and Microwave Desulfurization of Coal in Tetrachloroethylene

Abstract

The extractive desulfurization of four high sulfur coals from China were promoted with ultrasonic and microwave in tetrachloroethylene organic solvents. It was shown that the joint promotion with ultrasonic and microwave had an active effect on extractive desulfurization. The rate of desulfurization increased with the increase of time in ultrasonic field as well as with the power of ultrasonic, but declined with the increase of the particle size of coal. The rate of desulfurization was not identical for different coal, which was perhaps related to the existed forms of organic sulfur in coal.     

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。     

微波脱硫的研究进展与存在问题

综述了煤中含硫分分类及其存在的形式,阐述了微波对煤中含硫组分的作用原理。总结了微波直接脱硫法、微波与气体联合脱硫法、微波与碱液联合脱硫法等脱硫方法的应用,并分析了上述方法的优势及不足,提出了对微波脱硫研究工作的展望。     

干式烟气脱硫技术进展及其应用前景分析

对国内外有广泛应用前景的几种干式烟气脱硫技术进行了介绍,分析了这些脱硫技术的特点,并针对上海地区电厂燃用高钙低硫煤的实际情况,提出了采用高钙粉煤灰增湿活化脱硫的简易脱硫方法。     

炉内喷钙及尾部增湿活化脱硫的中间试验研究

对炉内喷钙及尾部增湿活化脱硫技术进行了中间试验研究,株洲烟煤的含硫量较低,当钙硫比为2．67,增湿量为18．6kg/h时,脱硫率达到75％,吸收剂利用率为28．1％。可以满足目前燃煤锅炉脱硫的需要。     

Effect of Prussian Blue on Organic Sulfur of Coal in Aqueous Medium

Abstract

This study is an attempt to desulfurize organic sulfur from coal samples with ferric hexacyanoferrate (II), Fe₄ [Fe(CN)₆], as the desulfurization agent. Effect of temperature, particle size and concentration of ferrocyanide ion on desulfurization from the coal samples has been investigated. The temperature and stirring time are the most important parameters for the level of desulfurization of organic sulfur. Removal of organic sulfur content increased continuously with increasing temperature from 298 to 368 K. The organic sulfur removal rate sharply increases from 10 min to 30 min stirring time. After 30 min, it reaches a value of plateau. Particle size between ?100 mesh and ?200 mesh slightly affects the amount of organic sulfur removal. Gradual increase in the concentration of ferric hexacyanoferrate (II) raised the magnitude of desulfurization, but at higher concentration, the variation is not significant.     

高温燃烧两段脱硫技术的试验研究

针对链条炉内钙基添加剂燃烧脱硫率低的难题,研究了链条炉床温和烟气成分的动态变化,在研究添加剂粒径、添加量和添加方式对各种钙基添加剂脱硫率影响的基础上,提出了两段燃烧脱硫技术的解决方案,以实现煤层内和燃烧室间同时脱硫的目的,从时间和空间两个方面克服了 简单与入炉散煤预混或炉内直接喷钙脱硫方式的根本缺陷,使链条炉燃烧胶硫效率提高了70%～80%。图3表4参7     

Investigation on the mechanism of coal desulfurization by ultrasonic with peroxyacetic acid

This investigation reports the exploration of the mechanism for coal desulfurization utilizing ultrasonic (US) with peroxyacetic acid. Changes in surface and pore diameter for coal samples were determined before and after US treatment. To study its chemical effect, production regularities of hydroxyl radical under US field was analyzed by the iodine release method. Experimental results showed that the specific surface area, total pore volume and average pore size of treated samples were improved compared to untreated coal. In addition, the production rule of hydroxyl radical was consistent with that of desulfurization rate. XPS analysis results indicated that the removals of pyrite, mercaptan, and sulfur ether from coal were more than 60%, while thiophene, sulfoxide and sulfone were difficult to remove from coal. The further oxidation of sulfur-containing groups in coal was obtained due to the physical and chemical effects of the ultrasonic. These findings confirmed that the synergistic action of physical and chemical effects of the US played an important role in this desulfurization process, which could serve as a reference for further optimizing the coal desulfurization process.     

Oxidative Desulfurization of Tufanbeyli Coal by Hydrogen Peroxide Solution

Abstract

It is becoming popular to use fossil fuels efficiently since the necessary energy is mostly supplied from fossil fuels. Altough there are high lignite reservoirs, high sulfur content limits the efficient use of them. In this article, we aimed to convert combustible sulfur in coal to non-combustible sulfate form in the ash by oxidizing it with a hydrogen peroxide solution. The parameters affecting the sulfur conversion were determined to be: hydrogen peroxide concentration, reaction time, mean particle size at constant room temperature and shaking rate. The maximum desulfurization efficiency reached was 74% of the original combustible sulfur with 15% (w/w) hydrogen peroxide solution, 12 hours of reaction time, and 0.25 mm mean particle size.     

模拟工业炉温度特性下的型煤固硫特性的试验研究

主要介绍型煤在高温下的固硫特性和改善型煤固硫效率的试验研究结果。研究表明：型煤固硫效率受温度影响很大,在较低温度下由固硫反应生成的固硫产物在温度升高后,又可能发生分解;按以废治废的原则在钙基固硫剂中加入合适的添加剂,可以有效地提高固硫效率。