廠傢揭示燃氣熱風爐使用註意事項

燃氣熱風爐使用註意事項,燃氣熱風爐成都收賬使用越來越盛行,目前已經被使用成都找人公司行業包括鋼鐵行業,電器電廠行業等等.主營:燃氣熱風爐,燃煤燃氣熱風爐等熱能設備.燃氣熱風爐針對國內外現有成都收賬生物質成型燃料燃燒設備,存在燃燒效率低、爐膛溫度過高、積灰和結渣嚴重、不適合塊狀和棒狀成型燃料收賬燃燒等問題,通過對國內外生物質成型燃料熱風爐燃燒室成都找人公司研究和借鑒,設計瞭新型生物質成型燃料熱風爐的燃燒室。該新型生物質熱風爐的燃燒室隻是熱風爐的燃燒部分,需要和獨立的換熱器配合使用。在我國可用於生產顆粒狀成型燃料的木屑很少,但擁有大量的可生產塊狀和棒狀成型燃料的作物秸稈。
The main business of the gas hot-blast stove is gas hot-blast stove, coal-fired gas hot-blast stove and other thermal energy equipment. The gas hot-blast stove has combustion efficiency for the existing biomass briquette fuel combustion equipment at home and abroad. The combustion chamber of biomass briquette fuel hot blast stove at home and abroad was studied and used for reference, and a new type of combustion chamber of biomass briquette fuel hot blast stove was designed. The combustion chamber of the new biomass hot blast stove is only the combustion part of the hot blast stove, which needs to be used in conjunction with an independent heat exchanger. In China, there are few sawdust which can be used to produce granular briquette fuel, but there are a lot of crop straw which can produce bulk and rod briquette fuel. 燃氣熱風爐並且計算不同載荷下的成都找人公司本體內襯變形情況,發現成都***內襯發生損壞可能性較高的區域有兩處:在熱風出口上部,耐火材料沿內襯圓周方向受拉、伸長,內襯較易松動,導致無法承受上方磚重;熱風出口以上、燃燒室錐段下部,內襯向外擴張z明顯,沿圓周方向受拉、伸長,內襯圓周方向極有可能松動或出現縫隙,這一結論與實際成都***破損相符。
By calculating the deformation of the inner lining of the hot blast stove under different loads, it is found that there are two areas where the damage probability of the inner lining of the hot blast stove is higher: in the upper part of the hot blast outlet, the refractory material is stretched and elongated along the circumferential direction of the inner lining, and the inner lining is easy to loosen, resulting in the unbearability of the brick weight above the hot blast outlet and the combustion chamber. In the lower part of the cone section, the inner liner expands outward obviously, and is stretched and elongated along the circumference direction. It is very likely that the inner liner will loosen or crack in the circumference direction. This conclusion is consistent with the actual hot blast stove damage.
同時燃氣熱風爐建立瞭蓄熱室格子磚二維傳熱數學模型,提出瞭z優混風量的計算方法,得到瞭z優混風量。隨著活面積的增大,風溫升高,當活面積超過臨界值時,高溫區向下擴展,送風期溫降加快,所需z優混風量增大,風溫降低。隨著格孔直徑的減小、導熱系數的升高、比熱容的減小、當單位體積風量消耗的燃氣減小、CO濃度的減小、預熱溫度的降低、空氣過剩系數的降低,z優活面積逐漸減小。另外,隨著空氣過剩系數的升高,z高送風溫度呈先增大,後減小的趨勢,存在z合適的空氣過剩系數。
At the same time, the two-dimensional heat transfer mathematical model of grid brick in regenerator is established in gas hot blast stove, and the calculation method of z-optimal air mixing quantity is put forward, and the z-optimal air mixing quantity is obtained. With the increase of living area, the air temperature rises. When the living area exceeds the critical value, the high temperature zone expands downward, the temperature drop accelerates during the air supply period, and the required z-optimal air mixing volume increases, and the air temperature decreases. With the decrease of pore diameter, the increase of thermal conductivity, the decrease of specific heat capacity, the decrease of gas consumption per unit volume of air, the decrease of CO concentration, the decrease of preheating temperature and the decrease of excess air coefficient, the preferred area of Z decreases gradually. In addition, with the increase of excess air coefficient, the temperature of high Z air supply increases at first and then decreases, and there is a suitable excess air coefficient of Z.
燃氣熱風爐對寶鋼高爐熱風爐實際生產數據進行瞭測試與收集,在此基礎上進行瞭熱平衡計算,並對計算結果進行瞭對比分析。結果表明:四高爐熱風爐熱效率較高,處於國內先進水平,但一高爐熱風爐熱效率較低。主要原因是一高爐熱風爐燃燒不充分,散熱損失大,煙氣餘熱回收裝置利用水平較低。可采用合理的空氣過剩系數透水地坪或富氧燃燒方式,增強保溫措施,改造或更換煙氣餘熱回收裝置,提高一高爐熱風爐熱效率。
The actual production data of Baosteel BF hot blast stove were tested and collected by gas hot blast stove. On this basis, the heat balance calculation was carried out, and the calculation results were compared and analyzed. The results show that the thermal efficiency of the hot blast stove of No. 4 BF is higher than that of the domestic advanced level, but the thermal efficiency of the hot blast stove of No. 4 BF is lower. The main reason is that the hot blast stove of a blast furnace has insufficient combustion, large heat loss, and low utilization level of waste heat recovery device of flue gas. Reasonable excess air coefficient or oxygen-enriched combustion mode can be adopted to enhance t环氧地坪hermal insulation measures, and the flue gas waste heat recovery device can be reformed or replaced to improve the thermal efficiency of a blast furnace hot blast stove.