太(tai)陽(yang)(yang)能(neng)發電(dian)是(shi)利用大規模(mo)陣(zhen)列(lie)鏡面收集太(tai)陽(yang)(yang)熱能(neng),儲存在(zai)流體熔鹽中,通過管道送入蒸(zheng)汽發生器制造蒸(zheng)汽,結合(he)傳(chuan)統汽輪發電(dian)機實現全天候發電(dian)。太(tai)陽(yang)(yang)能(neng)光熱發電(dian)技術相比硅晶光(guang)電(dian)(dian)轉(zhuan)換工藝成本大(da)大(da)降(jiang)低(di),同時(shi)(shi)解決了以往(wang)新能(neng)(neng)源發(fa)(fa)電(dian)(dian)對(dui)風、光(guang)等條件過度(du)依(yi)賴的(de)問(wen)題,在太陽落山后幾個小時(shi)(shi)仍然能(neng)(neng)夠帶動(dong)汽(qi)輪機發(fa)(fa)電(dian)(dian),有(you)效緩解了電(dian)(dian)網壓(ya)力,是重(zhong)要的(de)前(qian)沿清潔(jie)能(neng)(neng)源技術。
在甘肅省敦(dun)煌(huang)市向西(xi)約20千(qian)(qian)米(mi)處,被(bei)稱為“超級(ji)(ji)鏡(jing)(jing)子發(fa)電(dian)(dian)(dian)(dian)站(zhan)”的(de)首航高科敦(dun)煌(huang)100兆(zhao)瓦(wa)熔(rong)鹽塔(ta)式(shi)光熱(re)電(dian)(dian)(dian)(dian)站(zhan)在戈(ge)壁灘上閃耀(見圖3-2-11)。電(dian)(dian)(dian)(dian)站(zhan)內約1.2萬(wan)面定日(ri)鏡(jing)(jing)以同心圓狀圍繞著260米(mi)高的(de)吸熱(re)塔(ta),鏡(jing)(jing)場總(zong)反射(she)面積達(da)(da)140多(duo)萬(wan)平方米(mi),設計年發(fa)電(dian)(dian)(dian)(dian)量(liang)達(da)(da)3.9億千(qian)(qian)瓦(wa)時,每年可(ke)減(jian)排二氧化碳35萬(wan)噸,是(shi)我國(guo)目前建成規模(mo)最(zui)大、吸熱(re)塔(ta)最(zui)高、可(ke)24小時連續(xu)發(fa)電(dian)(dian)(dian)(dian)的(de)100兆(zhao)瓦(wa)級(ji)(ji)熔(rong)鹽塔(ta)式(shi)光熱(re)電(dian)(dian)(dian)(dian)站(zhan)。太陽(yang)能(neng)光熱(re)發(fa)電(dian)(dian)(dian)(dian)被(bei)認為是(shi)具備(bei)成為基礎(chu)負(fu)荷電(dian)(dian)(dian)(dian)源(yuan)潛力的(de)新興(xing)能(neng)源(yuan)應用技術,敦(dun)煌(huang)100兆(zhao)瓦(wa)熔(rong)鹽塔(ta)式(shi)光熱(re)電(dian)(dian)(dian)(dian)站(zhan)借助良好的(de)電(dian)(dian)(dian)(dian)網基礎(chu)優(you)勢,將新能(neng)源(yuan)不斷輸(shu)往全國(guo)各地。
塔式熔鹽光熱電站使用了大量的熔鹽,這些熔鹽具有一定的腐蝕性,而且還必須在500多攝氏度的高溫下運行25~30年,這要求與它們接觸的必須是高性能不銹鋼材料。久立集團研發的不銹(xiu)鋼集熱管有效克服了熔鹽介質的腐蝕問題,同時配合光熱涂層使其能最大程度地吸收太陽能,又能防止熱能散失。經實踐證明,配合光熱涂層的久立集熱管完全滿足在高溫下長期連續工作的條件,大大提高了電站效率。目前久立集團生產的TP321、TP347、N06625等材料已經成功應用于迪拜、敦煌、南通、浙工大等多個光熱項目。
不(bu)銹(xiu)鋼在(zai)光(guang)(guang)熱(re)(re)電(dian)(dian)站(zhan)(zhan)(zhan)的(de)(de)(de)另一(yi)個重要應(ying)用(yong)(yong)(yong)(yong)領域是熔鹽(yan)儲(chu)罐。熔鹽(yan)儲(chu)罐一(yi)直要與高溫(wen)熔鹽(yan)接觸(chu),并且使用(yong)(yong)(yong)(yong)溫(wen)度往(wang)(wang)往(wang)(wang)可以達(da)到500~600℃,這就要求罐體具(ju)有長期(qi)的(de)(de)(de)耐腐蝕性和(he)抗蠕變性,同時還要有長久的(de)(de)(de)支持結構。目(mu)前,TP347H不(bu)銹(xiu)鋼已經(jing)成為很多光(guang)(guang)熱(re)(re)電(dian)(dian)站(zhan)(zhan)(zhan)熔鹽(yan)罐加工時的(de)(de)(de)首(shou)選材(cai)料(liao),我國多年來一(yi)直依賴從奧托昆普(pu)等(deng)(deng)企(qi)業進口(kou)。目(mu)前熔鹽(yan)儲(chu)罐已經(jing)實現國產(chan)化,2019年國家(jia)光(guang)(guang)熱(re)(re)發電(dian)(dian)示(shi)范項(xiang)目(mu)-甘肅(su)玉門市鄭家(jia)沙窩5萬千瓦光(guang)(guang)熱(re)(re)發電(dian)(dian)項(xiang)目(mu)1號模塊(kuai)太(tai)陽島(dao)安(an)裝基本完成,該項(xiang)目(mu)的(de)(de)(de)儲(chu)熱(re)(re)器使用(yong)(yong)(yong)(yong)太(tai)鋼耐高溫(wen)不(bu)銹(xiu)鋼材(cai)料(liao)建(jian)造,產(chan)品達(da)到了設計院(yuan)和(he)用(yong)(yong)(yong)(yong)戶的(de)(de)(de)要求,已經(jing)陸(lu)續(xu)使用(yong)(yong)(yong)(yong)在(zai)青海(hai)、甘肅(su)、河北(bei)、內蒙古、新疆等(deng)(deng)省市及(ji)自治區的(de)(de)(de)光(guang)(guang)熱(re)(re)發電(dian)(dian)項(xiang)目(mu)。此(ci)外(wai),光(guang)(guang)熱(re)(re)電(dian)(dian)站(zhan)(zhan)(zhan)蒸汽發生系統(tong)的(de)(de)(de)換熱(re)(re)器與水(shui)傳輸(shu)系統(tong)及(ji)其(qi)配件和(he)法蘭等(deng)(deng)也是不(bu)銹(xiu)鋼材(cai)料(liao)使用(yong)(yong)(yong)(yong)的(de)(de)(de)重點區域。
至德鋼業,我們(men)根(gen)據您(nin)的(de)實際需(xu)求,給出(chu)參考建議,為(wei)您(nin)提(ti)供(gong)高性價(jia)比的(de)不(bu)銹(xiu)鋼管道及配件。