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    目前控製煙氣NOx排放的措施有哪些？

    目前控製煙氣NOx排放的措施大致分為3類：一類是低NOx燃燒技術，其技術的主要特征是采用燃燒優化、空氣和燃料的分級燃燒、煙氣

    At present, the measures to control flue gas NOx emission are roughly divided into three categories: one is low NOx combustion technology, which is mainly characterized by combustion optimization, staged combustion of air and fuel, and flue gas
    再循環以及低NOx燃燒器等多種型式，控製燃燒區域的溫度、過剩空氣量及燃料量，抑或還原燃燒過程中生成的NOx，從而降低NOx
    Recirculation and low NOx burners control the temperature of the combustion area, the amount of excess air and fuel, or reduce NOx generated in the combustion process, so as to reduce NOx
    排放，該技術措施一般可以降低NOx排放濃度的30%～60%：另一類是煙氣淨化技術，zui為典型的煙氣淨化是選擇性催化劑脫硝法(即SCR)，
    Emission, this technical measure can generally reduce the NOx emission concentration by 30% - 60%. The other is flue gas purification technology. Zui is a typical flue gas purification method, namely selective catalyst denitration (SCR),
    其脫硝效率可達80%～90%;第三類是爐膛噴射脫硝技術(即SNCR)，其技術的主要特征是在爐膛上部的某一特定區域噴射還原劑，使
    Its denitration efficiency can reach 80% - 90%; The third type is furnace spray denitration technology (SNCR), which is mainly characterized by spraying reductant in a specific area on the upper part of the furnace to make
    其在一定的溫度條件下還原已生成的NOx，較典型的噴射物質是爐膛噴氨.氨與煙氣中的NOx在950～1050℃這一狹窄的溫度
    It reduces the generated NOx under certain temperature conditions, and the typical injection material is furnace ammonia injection Ammonia and NOx in flue gas are at a narrow temperature of 950 ~ 1050 ℃
    範圍內發生反應，生成氮氣和水，NOx降低率一般為30%70%，該技術投資少，運行費用也低J。
    The reaction takes place within the range to generate nitrogen and water, and the NOx reduction rate is generally 30% to 70%. The investment of this technology is small, and the operation cost is also low J.
    如何選擇適合於自己工程的脫硝工藝，應主要從以下幾個方麵綜合考慮：
    How to choose the denitration process suitable for your own project should be comprehensively considered from the following aspects:
    (1)NOx排放濃度和排放量必*滿足排放標準及有關環境保護的要求：
    (1) NOx emission concentration and emission must * meet the emission standards and relevant environmental protection requirements:
    (2)脫硝工藝要適用於本工程已確定的燃料條件，並考慮燃料來源的變化可能性;
    (2) The denitration process shall be applicable to the determined fuel conditions of the project, and the possibility of changes in fuel sources shall be considered;
    (3)脫硝丁藝技術成熟、設備運行可靠，並有較多成功的運行業績：
    (3) Denitration Dingyi has mature technology, reliable equipment operation, and more successful operation performance:
    (4)脫硝裝置占地麵積小，投資費用省;
    (4) The denitration device covers a small area and saves investment costs;
    (5)脫硝劑要有穩定可靠的來源：
    (5) The denitration agent should have a stable and reliable source:
    (6)運行、檢修和維護費用小。
    (6) The operation, overhaul and maintenance costs are small.
    以上就是為大家介紹的有關幹法脫硫的詳細的介紹,希望對您有所幫助.如果您有什麽疑問的話,歡迎聯係蜜桃免费在线视频.蜜桃免费在线视频將以的態度,為您提供服務.http://www.oagood.com
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