洁净煤技术
潔淨煤技術
길정매기술
CLEAN COAL TECHNOLOGY
2015年
2期
14-19
,共6页
活性焦%脱硫%脱硝%烟气
活性焦%脫硫%脫硝%煙氣
활성초%탈류%탈초%연기
activated coke%desulfurization%denitration%flue gas
为了开发活性焦联合脱硫脱硝工艺，选取一种商用活性焦在微型反应器上进行NH3对NO、SO2脱除影响及NO和SO2脱除交互影响试验，提出了活性焦联合脱硫脱硝工艺路线，并在实验室搭建的模拟装置上进行了工艺路线的模拟试验验证。结果表明，活性焦脱硝是低温SCR反应，NH3的存在使SO2吸附量提高约18%，说明NH3与SO2发生化学反应，有利于SO2脱除，但生成的硫铵会降低工业装置的稳定性；当活性焦无吸附NH3时，NO对SO2脱除无影响，当活性焦吸附NH3时，通入NO前后，SO2出口体积分数由0.15%降至0.13%左右，说明NO对SO2脱除有促进作用；通入SO2气体后，NO出口体积分数由0.045%迅速增至0.065%，说明SO2与NO争抢NH3，不利于脱硝。通过工艺路线模拟试验发现，当联合脱硫脱硝空速为400 h－1时，脱硫效率≥95%，脱硝效率≥70%，验证了活性焦联合脱硫脱硝工艺的可行性。
為瞭開髮活性焦聯閤脫硫脫硝工藝，選取一種商用活性焦在微型反應器上進行NH3對NO、SO2脫除影響及NO和SO2脫除交互影響試驗，提齣瞭活性焦聯閤脫硫脫硝工藝路線，併在實驗室搭建的模擬裝置上進行瞭工藝路線的模擬試驗驗證。結果錶明，活性焦脫硝是低溫SCR反應，NH3的存在使SO2吸附量提高約18%，說明NH3與SO2髮生化學反應，有利于SO2脫除，但生成的硫銨會降低工業裝置的穩定性；噹活性焦無吸附NH3時，NO對SO2脫除無影響，噹活性焦吸附NH3時，通入NO前後，SO2齣口體積分數由0.15%降至0.13%左右，說明NO對SO2脫除有促進作用；通入SO2氣體後，NO齣口體積分數由0.045%迅速增至0.065%，說明SO2與NO爭搶NH3，不利于脫硝。通過工藝路線模擬試驗髮現，噹聯閤脫硫脫硝空速為400 h－1時，脫硫效率≥95%，脫硝效率≥70%，驗證瞭活性焦聯閤脫硫脫硝工藝的可行性。
위료개발활성초연합탈류탈초공예，선취일충상용활성초재미형반응기상진행NH3대NO、SO2탈제영향급NO화SO2탈제교호영향시험，제출료활성초연합탈류탈초공예로선，병재실험실탑건적모의장치상진행료공예로선적모의시험험증。결과표명，활성초탈초시저온SCR반응，NH3적존재사SO2흡부량제고약18%，설명NH3여SO2발생화학반응，유리우SO2탈제，단생성적류안회강저공업장치적은정성；당활성초무흡부NH3시，NO대SO2탈제무영향，당활성초흡부NH3시，통입NO전후，SO2출구체적분수유0.15%강지0.13%좌우，설명NO대SO2탈제유촉진작용；통입SO2기체후，NO출구체적분수유0.045%신속증지0.065%，설명SO2여NO쟁창NH3，불리우탈초。통과공예로선모의시험발현，당연합탈류탈초공속위400 h－1시，탈류효솔≥95%，탈초효솔≥70%，험증료활성초연합탈류탈초공예적가행성。
In order to develop combined removal of SO2/NO process by activated coke,a commercial activated coke was chosen as research object,the influence of NH3 on desulfurization and denitrification as well as the interactive effects of NO and SO2 removal was investigated on micro reactor. The route of combined removal of SO2/NO process was obtained and the simulated experiment was conducted in the lab. The results showed that the denitrification was low-temperature SCR reaction. The participation of NH3 increased SO2 adsorption by 18%which indicated that the reaction of NH3 and SO2 was helpful to remove SO2 ,while the generated ammonium sulfate reduced the stability of industrial device. When the activated coke didnˊt adsorb NH3 ,the presence of NO had no effects on SO2 removal. When the activated coke adsorbed NH3 ,the concentration of SO2 at outlet decreased from 0. 15% to 0. 13% after piping NO. The concentration of NO at outlet in-creased from 0. 045% to 0. 065% after piping SO2 . The results indicated that the NO benefited desulfurization,while the reaction of SO2 and NH3 hindered denitrification. The combined removal of SO2/NO process was feasible by simulation experiment. The desulfurization ef-ficiency was equal or more than 95% and the denitration efficiency was equal or more than 70% when the space velocity was 400 h-1 .
