摘 要：本文介绍了烟气脱硫脱硝吸收剂的制备方法和研究，并主要以这两个方面进行了详细的讲述。单一脱硫脱硝技术：在这一节中简单的讲述了干湿法脱硫技术、选择性催化还原法脱氮技术与选择性非催化还原法脱氮技术，详细讲述了它们的吸收剂的制备方法、性能的相关计算、试验、吸收剂的效果分析；活性焦脱硫脱硝技术：在这一节中主要讲述了脱硫脱硝活性焦的制备方法与研制，并对其脱硫脱氮技术进行了简述，还有一些相关的性能计算，吸收剂的效果分析。
在单一的脱硫脱硝技术中，以钙基脱硫为例，利用飞灰和Ca(OH)2经水合反应制取钙基吸收剂，并通过实验分析，得出影响水合吸收剂比表面积大小的因素按影响程度大小依次是：水合时间，水固比，飞灰／Ca(OH)2比，飞灰来源，他们都有一个最佳值。其中水合时间影响最大。然后对吸收剂样品进行脱硫实验，检验样品的Ca(OH)2利用率和反应速率。结果得出：经过飞灰和Ca(OH)2水合反应的吸收剂比表面积对吸收剂性能有很大的影响。比表面积越大，吸收速率越高，同时Ca(OH)2的利用率也得到很大的提高。
脱氮技术分别利用3中脱氮剂对其进行相应的脱氮试验。其中尿素制氨有2种可行方法：1、水解法；2、热解法。
在活性焦脱硫脱硝技术中，以褐煤为主要原料制备的活性焦，具有成本低、机械强度高、能同时脱硫脱氮、在燃煤烟气温度下能达到较高的脱硫脱氮效率等特点。活性焦能够再生、重复使用，因而可降低燃煤烟气的处理成本。活性焦的制备主要受一下几个因素所影响：1、干馏气体介质；2、干馏温度；3、活化气体介质；4、活化温度；5、活化时间。
关键词： 脱硫脱硝 钙基吸收剂 活性焦研制
Abstract：This article describes the desulfurization and denitrification absorbent preparation methods and research, and mainly in two aspects described in detail. Single desulfurization and denitrification technologies: in this section describes a simple wet and dry FGD technology, selective catalytic reduction nitrogen removal and nitrogen selective non catalytic reduction technology, absorbing detail their preparation methods performance-related calculations, testing, analysis of the effect of absorbent; active coke desulfurization and denitrification technologies: in this section describes the main focus of desulfurization and denitrification activity of the preparation methods and research, and its desulfurization and denitrification technologies were outlined, but also There are some performance-related calculations, the effect of absorbent.
Desulfurization and denitrification in a single technology, to calcium-based desulfurization, for example, use of fly ash and Ca (OH) 2 obtained by the hydration reaction of calcium based sorbents, and through experimental analysis, the impact absorbent surface area the size of the hydration factor according to the order of influence are: hydration time, the water-solid ratio, fly ash / Ca (OH) 2 ratio, fly ash sources, they all have an optimum value. Hydration time in which the greatest impact.Then the samples were desulfurization absorbent, test samples Ca (OH) 2 utilization and the reaction rate. Results obtained: After fly ash and Ca (OH) 2 hydration on the absorbent properties of absorbent surface area has a great influence. Larger than the surface area, the higher the absorption rate, while Ca (OH) 2 utilization has also been greatly improved.
Nitrogen removal, respectively, using 3 nitrogen removal agent on the corresponding test. Of which there are two kinds of urea ammonia possible ways: 1, hydrolysis; 2, pyrolysis.
Desulfurization and denitrification in the activated coke technology, the preparation of brown coal as the main activity of raw coke, low cost, high mechanical strength and desulfurization and denitrification simultaneously, in the flue gas temperatures can reach high efficiency characteristics of desulfurization and denitrification . Active coke to regenerate, re-use, thus reducing the cost of coal-fired flue gas treatment.Preparation of active coke is mainly affected by several factors about: 1, pyrolysis gas medium; 2, the pyrolysis temperature; 3, the active gas medium; 4, activation temperature; 5, the activation time.
Keywords: desulfurization and denitrification , Calcium-based sorbent , Development of active coke
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