Boilers mocheso o tlase oa kutu ke eng?
sulfuric acid corrosion e hlahang karolong e ka morao ea ho futhumatsa ea boiler (economizer, air preheater) e bitsoa kutu ea mocheso o tlase hobane mocheso oa khase ea flue le lebota le karolong e ka morao ea mocheso o tlase. Ka mor'a hore mocheso o tlaase o hlahe ka har'a tube ea economizer, ho lutla ho ka 'na ha etsahala ka nako e khutšoanyane, ho beha likotsi tsa polokeho. Ho koala sebōpi bakeng sa tokiso le hona ho tla baka tahlehelo e khōlō ea moruo.
Lebaka le ka sehloohong la ho senyeha ha mocheso o tlase oa li-boilers
Sebabole se mafura se chesoa ho etsa sulphur dioxide (S+02=SO2). Sulfur dioxide e tsoela pele ho kenngoa ka oxid tlas'a ketso ea catalyst ho etsa sulfur trioxide (2SO2+02=2S03). SO3 le mouoane oa metsi ka khase ea flue li hlahisa mouoane oa sulfuric acid (SO3+H2O =H2SO4). Ho ba teng ha mouoane oa sulfuric acid ho eketsa haholo ntlha ea phoka ea khase ea flue. Kaha mocheso oa moea sebakeng sa preheater o tlase, mocheso oa khase ea flue karolong ea preheater ha o phahame, 'me mocheso oa lebota o atisa ho ba tlase ho feta phoka ea flue gas. Ka tsela ena, mouoane oa sulfuric acid o tla kopana holim'a mocheso o futhumatsang oa preheater ea moea, 'me o baka corrosion ea sulfuric acid. Hangata kutu e nang le mocheso o tlase e hlaha li-preheaters tsa moea, empa ha sebabole ka har'a peterole se le holimo, moea o fetelletseng oa moea o moholo, litaba tsa SO3 ka har'a khase ea flue li phahame, phoka ea asiti ea phahama, 'me mocheso oa metsi oa phepelo oa phahama. tlase (mochine oa turbine o sa sebetse ka mocheso o phahameng), tube ea economizer e ka boela ea hlokofatsoa ke ho senyeha ha mocheso o tlase.
Boiler mocheso o tlase oa kutu
Bolara ea bethe ea k'hamphani e potolohang e ile ea kengoa ts'ebetsong nako le nako nako e ka tlase ho selemo, 'me liphaephe tse ngata tse ka har'a phala e tlase ea economizer li ile tsa tšoaroa ke ho phunyeha le ho lutla. Mafura a boiler ke motsoako oa mashala a bituminous le seretse, lisebelisoa tsa tube ea economizer ke tšepe ea 20 (GB/T 3087-2008), 'me mocheso o kenang oa economizer hangata o ka tlase ho 100 ° C.
Mabaka a ho phunyeha le ho lutla ha tube ea economizer a ile a hlahlojoa ka tlhahlobo ea sebopeho sa thepa, tlhahlobo ea thepa ea mochine, tlhahlobo ea metallographic, ho hlahloba morphology ea electron microscope le matla a matla, tlhahlobo ea X-ray diffraction phase, joalo-joalo. Tlhahlobo e fumane hore tube ea economizer e sebetsa ka mocheso o tlase, 'me lihlahisoa tsa kutu li na le palo e kholo ea likarolo tsa S le Cl. Lerako le ka ntle la tube ea economizer le na le ts'oso e tlase ea mocheso tlas'a ts'ebetso ea mocheso o tlase le kutu ea asiti nakong ea ho koala, e qetellang e lebisa ho bolokeheng ha mashala. Peipi e kolobisitsoe, e phunyeletse ebile ea lutla.
Mehato ea ho thibela kutu e tlase ea mocheso
1. Eketsa mocheso oa lebota la tube ea preheater ea moea e le hore mocheso oa lebota o phahame ho feta phoka ea khase ea flue.
2. Li-additives ho khase ea flue ho fokotsa SO3 le ho thibela tlhahiso ea mouoane oa sulfuric acid. 3. Sebelisa thepa e sa khoneng ho bola ha mocheso o tlase ho etsa li-preheaters le li-economizers.
4. Sebelisa mollo o tlaase oa oksijene ho fokotsa oksijene e feteletseng ka khase ea flue le ho thibela le ho fokotsa phetoho ea SO2 ho SO3.
5. Ka ho lemoha mocheso oa phoka ea acid, phoka ea asiti tlas'a maemo a itseng a sebetsang e ka tsejoa ka nepo, ka hona ho fetola mocheso oa khase ea ho qeta ho finyella maemo a molemo ka ho fetisisa bakeng sa ho boloka matla le ho lelefatsa bophelo ba boiler.
Nako ea poso: Nov-30-2023
