煤變質帶 的英文怎麼說
中文拼音 [méibiànzhídài]
煤變質帶
英文
metamorphic belt of coal-
This article aims at the boiler ' s problems in operation : 1 ) under nominal load, the smoke temperature at the outlet of hearth reaches 1200, far more exceeds 1050 the original designed temperature. this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat, so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily, 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes. during the nomal operation, many factors ( makeup of combustor and its disposal, smirch and encrust of water wall, excessive air coefficient, temperature of primary air, coal type and density of coal dust ) can deviate the designed working conditions, then affect the boiler ' s nomal operation
本文針對該鍋爐在實際運行中存在的問題：在額定負荷下，爐膛出口超溫、低溫段過熱器前煙溫高達936 ，遠遠超過815的設計值；噴燃器四周水冷壁結焦嚴重，過熱器管壁溫度超標，無法帶上額定負荷；甚至有時因燃煤質量的變化，必須投油助燃的嚴重情況進行了分析研究。在實際生產過程中，燃燒器的結構、布置，水冷壁的粘污、結垢，過剩空氣系數、一次風溫、煤種及其濃度變化等許多因素都會偏離鍋爐的設計工況，從而影響爐內的傳熱和燃燒，造成爐膛出口超溫、水冷壁結渣等問題。Medium - rank bituminites are formed by pneumato - hydrothermal metamorphism on the basis of burial metamorphism, and it is partial
深大斷裂帶及其附近局部發育的中級煙煤是在深成變質基礎上，疊加了高溫氣液熱變質作用而形成。The severe and frequent changes in sedimentary environments ( coal facies ) led to the horizontally and vertically sharp inhomogeneities of the pore system and relevant petro - physical property of coal reservoir, which bring on a very disadvantageous influence on the coalbed methane development in the basin
由於沉積環境（煤相）的劇烈頻繁變遷導致了煤儲層孔隙系統及相應的儲層物性在縱向及橫向上強烈的非均質性，給該盆地煤層氣的開發帶來平重不利影響。Through the gee stress test of finite points and finite element back - analysis, the paper concludes the geo - stress distribution pattern in different tectonic belt and various lithology strata, which will supply references to mining, design and farther decision making
摘要通過對有限個點的地應力測試，結合已知的工程地質條件，進行有限元反演計算，並對結果進行分析，得到不同構造帶應力分佈規律和不同巖性地層地應力的變化情況，為煤層開采設計和進一步的決策提供重要的參考依據。分享友人