本文關(guān)鍵詞：低溫?zé)煔庀潞置焊稍锾匦缘膶?shí)驗(yàn)研究　出處：《哈爾濱工業(yè)大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 褐煤干燥 COMBDry干燥器 干燥溫度 煙煤比 煙氣流量

【摘要】：隨著我國(guó)近年來能源消耗的不斷增長(zhǎng),以往大規(guī)模的采用優(yōu)質(zhì)的煤炭資源已經(jīng)不被允許了,而以前較為忽視的褐煤資源,日漸引起世界能源界的廣泛重視。眾所周知,褐煤作為不可再生資源的一種,褐煤的水分含量較高,其總水分含量一般可達(dá)10%~60%,發(fā)熱量較低,揮發(fā)分較高。若未對(duì)褐煤干燥后直接送入爐膛燃燒,會(huì)產(chǎn)生較多的熱量損失,引起鍋爐的效率降低。為了克服直接利用褐煤資源所產(chǎn)生的弊端,解決褐煤潔凈、高效利用的這一重大課題,探索出高效的褐煤干燥脫水提質(zhì)新技術(shù)迫在眉睫。根據(jù)研究?jī)?nèi)容,完成COMBDry干燥褐煤實(shí)驗(yàn)臺(tái)的搭建與調(diào)試工作。在COMBDry干燥褐煤實(shí)驗(yàn)臺(tái)系統(tǒng)流程設(shè)計(jì)的基礎(chǔ)上,詳細(xì)介紹了本實(shí)驗(yàn)臺(tái)的組成,包括燃燒器及煙氣發(fā)生爐、COMBDry干燥器、干燥熱源的選取、供氣系統(tǒng)、給料系統(tǒng)、除塵系統(tǒng)、冷卻水循環(huán)換熱系統(tǒng)及電路控制系統(tǒng)等。詳細(xì)介紹了本實(shí)驗(yàn)臺(tái)的測(cè)量系統(tǒng),包括溫度、壓力及煙氣流量的測(cè)量,煙氣取樣槍的設(shè)計(jì)與安裝及實(shí)驗(yàn)數(shù)據(jù)的獲取等。展開對(duì)COMBDry干燥褐煤實(shí)驗(yàn)臺(tái)的調(diào)試工作:冷態(tài)風(fēng)量及給煤量的標(biāo)定,干燥褐煤的試運(yùn)行實(shí)驗(yàn),COMBDry干燥器及引風(fēng)機(jī)的改進(jìn)等。最終完成對(duì)COMBDry干燥褐煤實(shí)驗(yàn)臺(tái)的搭建與調(diào)試工作,為下一步干燥褐煤實(shí)驗(yàn)的研究奠定了良好的實(shí)驗(yàn)條件基礎(chǔ)。最后,應(yīng)用已經(jīng)調(diào)試成功后的COMBDry干燥褐煤實(shí)驗(yàn)臺(tái)開展低溫?zé)煔庀潞置焊稍锾匦缘膶?shí)驗(yàn)研究。通過研究干燥溫度對(duì)低溫?zé)煔庀潞置焊稍锾匦缘挠绊懸?guī)律,確定了低溫?zé)煔庀伦罴迅稍餃囟?在低溫?zé)煔庀伦罴迅稍餃囟鹊臈l件下,通過研究煙煤比對(duì)低溫?zé)煔庀潞置焊稍锾匦缘挠绊懸?guī)律得出,褐煤煤種的不同會(huì)導(dǎo)致煙煤比參數(shù)對(duì)低溫?zé)煔庀潞置焊稍锾匦杂绊懸?guī)律的差異性;在低溫?zé)煔庀伦罴迅稍餃囟鹊臈l件下,控制煙煤比參數(shù)在合理的范圍內(nèi),研究煙氣流量對(duì)低溫?zé)煔庀潞置焊稍锾匦缘挠绊?確定了低溫?zé)煔庀伦罴迅稍餆煔饬髁俊?br/>[Abstract]:With the increasing of energy consumption in China in recent years, the large-scale use of high-quality coal resources in the past has not been allowed, but the previous relatively neglected lignite resources. It is well known that lignite, as a kind of non-renewable resources, has a high moisture content, and its total moisture content can reach 100.60%, with low calorific value. If the lignite is not dried and burned directly into the furnace, it will cause more heat loss and lower boiler efficiency. In order to overcome the disadvantages of direct utilization of lignite resources and solve the cleanliness of lignite. It is urgent to explore a new technology of drying, dehydration and quality improvement of lignite with high efficiency. According to the research content. On the basis of the system flow design of COMBDry dry lignite test bench, the composition of the test table is introduced in detail. Including combustor and flue gas generator COMBDry dryer, dry heat source selection, gas supply system, feed system, dust removal system. The cooling water circulating heat transfer system and circuit control system are introduced in detail, including the measurement of temperature, pressure and flue gas flow. Design and installation of flue gas sampling gun and acquisition of experimental data. Debugging work of COMBDry dry lignite test bench is carried out: cold air volume and coal supply calibration, dry lignite trial operation experiment. The improvement of COMBDry dryer and induced fan, etc. Finally, the construction and debugging of COMBDry dry lignite test bench were completed. For the next dry lignite experimental research laid a good experimental conditions. Finally. The dry characteristics of lignite under low temperature flue gas were studied by using the COMBDry dry lignite test rig, and the effect of drying temperature on the drying characteristics of lignite under low temperature flue gas was studied. The optimum drying temperature was determined under low temperature smoke. Under the condition of optimum drying temperature under low temperature flue gas, the influence of bituminous coal ratio on the drying characteristics of lignite under low temperature flue gas was studied. The difference of lignite coal will lead to the difference of the influence of bituminous coal specific parameters on the drying characteristics of lignite under low temperature smoke. Under the condition of optimum drying temperature under low temperature flue gas, the influence of flue gas flow rate on the drying characteristics of lignite under low temperature flue gas was studied by controlling the specific parameters of bituminous coal within a reasonable range. The optimum flow rate of dry flue gas under low temperature smoke was determined.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TD849.2
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本文編號(hào)：1428446