|
如何調整聲波吹灰器的運行參數隨著工業生產(chan)過(guo)程(cheng)中對(dui)節能(neng)(neng)、減排要(yao)求的不斷提高,聲波吹(chui)灰器在鍋爐(lu)和SCR反應(ying)器中的應(ying)用(yong)越來越廣泛(fan),如何合理調整(zheng)好聲波吹(chui)灰器的運行參數,使之既能(neng)(neng)充分發揮吹(chui)灰器設(she)備性能(neng)(neng)、達到良好吹(chui)灰效果(guo),又能(neng)(neng)盡量(liang)節約壓縮空(kong)氣消(xiao)耗量(liang)、有利于設(she)備穩定運行和延長使用(yong)壽命,成為一個(ge)常見的問題。 聲(sheng)(sheng)(sheng)波(bo)(bo)(bo)吹灰(hui)(hui)器的(de)(de)吹灰(hui)(hui)效(xiao)果(guo),主要(yao)取(qu)決(jue)于聲(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)強度和吹灰(hui)(hui)的(de)(de)頻(pin)次,而(er)聲(sheng)(sheng)(sheng)波(bo)(bo)(bo)的(de)(de)強度又主要(yao)取(qu)決(jue)于壓縮空氣的(de)(de)壓力、流量(liang)、以及設(she)備本身的(de)(de)質量(liang)和性(xing)能,對于現場(chang)調(diao)試(shi)來說,設(she)備已經是不可改(gai)變的(de)(de)條件(不論(lun)優(you)劣都已經安(an)裝(zhuang)完成),就只能對氣源、運行時(shi)間(jian)(即吹灰(hui)(hui)頻(pin)次:單臺運行時(shi)間(jian)、相(xiang)鄰兩臺間(jian)隔時(shi)間(jian)、運行周期等)、聲(sheng)(sheng)(sheng)波(bo)(bo)(bo)頻(pin)率(旋笛式聲(sheng)(sheng)(sheng)波(bo)(bo)(bo)吹灰(hui)(hui)器可調(diao)頻(pin))等進行調(diao)整(zheng)。 科(ke)學的(de)(de)調(diao)(diao)整(zheng)(zheng)要在鍋(guo)(guo)爐(lu)(或SCR反應(ying)器(qi)(qi)(qi)(qi))熱態(tai)(tai)運(yun)(yun)行(xing)工(gong)況下進行(xing),先按正(zheng)常(chang)(chang)(chang)經驗調(diao)(diao)整(zheng)(zheng)設置(zhi)好(hao)各項參(can)(can)數(shu)(shu)(shu),吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)系統(tong)正(zheng)常(chang)(chang)(chang)投運(yun)(yun)后,現(xian)場(chang)查看各臺設備運(yun)(yun)行(xing)狀態(tai)(tai)是(shi)否正(zheng)常(chang)(chang)(chang),然后持(chi)續觀(guan)察鍋(guo)(guo)爐(lu)運(yun)(yun)行(xing)參(can)(can)數(shu)(shu)(shu)變(bian)化情(qing)況,如果(guo)鍋(guo)(guo)爐(lu)運(yun)(yun)行(xing)狀態(tai)(tai)持(chi)續穩定(ding)、良(liang)好(hao),就不用再修改調(diao)(diao)整(zheng)(zheng)吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)參(can)(can)數(shu)(shu)(shu)設置(zhi);如果(guo)鍋(guo)(guo)爐(lu)運(yun)(yun)行(xing)狀態(tai)(tai)不好(hao)(分析是(shi)吹(chui)(chui)(chui)灰(hui)(hui)(hui)效果(guo)不良(liang)所導致(zhi)),則需要調(diao)(diao)整(zheng)(zheng)吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)運(yun)(yun)行(xing)參(can)(can)數(shu)(shu)(shu),加(jia)強(qiang)(qiang)吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)效果(guo),一般從(cong)三(san)個方面調(diao)(diao)整(zheng)(zheng):一是(shi)提高氣(qi)源壓力(li)(壓縮勢能(neng)越大(da),所轉化為聲能(neng)的(de)(de)強(qiang)(qiang)度就也高,吹(chui)(chui)(chui)灰(hui)(hui)(hui)力(li)度和(he)范圍就越大(da)),一般現(xian)場(chang)壓力(li)只有0.4MPa左(zuo)右(you),可以提高到0.6MPa左(zuo)右(you);二是(shi)合理(li)延長單臺吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)的(de)(de)運(yun)(yun)行(xing)時間(jian)(jian)(jian)、縮短運(yun)(yun)行(xing)間(jian)(jian)(jian)隔和(he)循環周(zhou)期(吹(chui)(chui)(chui)灰(hui)(hui)(hui)時間(jian)(jian)(jian)越長,吹(chui)(chui)(chui)灰(hui)(hui)(hui)效果(guo)就越好(hao),但耗氣(qi)量和(he)設備磨損(sun)也會(hui)增加(jia),所以要持(chi)續觀(guan)察調(diao)(diao)整(zheng)(zheng)后的(de)(de)鍋(guo)(guo)爐(lu)參(can)(can)數(shu)(shu)(shu)變(bian)化,找(zhao)到合理(li)、平衡的(de)(de)吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)參(can)(can)數(shu)(shu)(shu)設置(zhi));三(san)是(shi)重新測試調(diao)(diao)整(zheng)(zheng)聲波頻率(只對旋笛式聲波吹(chui)(chui)(chui)灰(hui)(hui)(hui)器(qi)(qi)(qi)(qi)適用),找(zhao)到與吹(chui)(chui)(chui)灰(hui)(hui)(hui)空間(jian)(jian)(jian)更匹配(pei)的(de)(de)聲波頻率,以便產生更強(qiang)(qiang)的(de)(de)混(hun)響聲場(chang),達到更好(hao)的(de)(de)吹(chui)(chui)(chui)灰(hui)(hui)(hui)效果(guo)。 上一篇循環流化床鍋爐的特點下一篇好的空氣激波吹灰器的技術要求 |