廠傢如何提高熱風爐的熱效率

熱風爐是一種經過燃料成都收賬燃燒將熱風爐內成都找人公司水加熱輸出熱蒸汽成都收賬工業熱風爐，隨著國傢節能減排政策收賬相繼實施，各行各業都開展瞭轟轟烈烈成都找人公司節能運動，作為能源使用大戶的熱風爐來說，提高熱風爐的熱效率不僅能夠減少燃料的使用量，為企業節省成本，還能夠減少污染。在國內工業熱風爐制造研發方面具有獨特經驗的鄭鍋相關工程師指出，提高熱風爐的熱效率可以從以下幾個方面進行著手：
Hot blast stove is a kind of industrial hot blast stove which heates water in hot blast stove and outputs hot steam through fuel combustion. With the successive implementation of national energy saving and emission reduction policies, vigorous energy saving campaigns have been carried out in all walks of life. As an energy user, improving the thermal efficiency of hot blast stove can not only reduce combustion. The amount of material used can save costs for enterprises and reduce pollution. Zheng Guo, an engineer with unique experience in manufacturing and R&D of industrial hot stoves in China, points out that improving the thermal efficiency of hot stoves can start from the following aspects: 合理改造換熱面：
Reasonable modification of heat exchange surface:
1、對臥式成都找人公司拆除原有爐膛的爐拱, 將燃煤爐床鋪上保溫層和耐火磚, 改造成為二次輻射面。對立式成都***可在爐底部砌輻射堆, 在爐膽的上部安裝輻射拱。
1. Removal of the arch of the original furnace for the horizontal hot blast stove, and transformation of the coal-fired furnace bed with insulation layer and refractory bricks into a secondary radiation surface. The vertical hot blast stove can build radiation heap at the bottom of the furnace and install radiation arch at the top of the furnace gallbladder.
2、控制爐膛與煙道的漏風量。對成都***的觀火孔進行密封, 對熱風爐的風道和煙道進行密封改造, 特別是磚砌風道和煙道漏風量較大時, 改燒燃氣後, 必須進行密封處理, ****改為金屬煙道。當多臺熱風爐共用一臺總煙道時, 每臺熱風爐的分煙道上應設隔斷裝置, 防止煙氣及吹掃過程中的殘留煤氣流入停止運行的熱風爐爐膛中去。
2. Control the air leakage of furnace and flue. Sealing the observation holes of hot blast stove, sealing the air duct and flue duct of hot blast stove, especially when the air leakage of brick air duct and flue duct is large, after burning gas, sealing treatment must be carried out, and ** should be changed to metal flue duct. When multiple hot blast stoves share a total flue, a partition device should be installed in the distributor of each hot blast stove to prevent the flue gas and residual gas from flowing into the stoppage hot blast stove hearth.
合理選擇燃燒器：
Reasonable selection of burners:
1、在額定供氣壓力下, 燃燒器的熱負荷必須滿足熱風爐的要求。燃燒完全, 過剩空氣系數低, 燃燒溫度高,燃燒噪音小, 爐膛火焰充滿度好, 火焰輻射能力強。
1. Under the rated supply pressure, the heat load of the burner must meet the requirements of the hot blast stove. Full combustion, low excess air coefficient, high combustion temperature, low combustion noise, good furnace flame filling, strong flame radiation capacity.
2、負荷調節比符合熱風爐運行的要求, 能對過剩空氣系數進行調節。
2. Load regulation ratio meets the requirements of hot blast stove operation and can adjus印花地坪t excess air coefficient.
3、能實現勞動部頒發的熱風爐安全技術監察規程規定的自控項目。
3. It can realize the self-control project stipulated in the regulations of hot blast stove Safety Technical Supervision issued by the Ministry of Labor.
其它措施：
Other measures:
1、合理利用熱風爐保溫及煙氣餘熱。對沒有保溫措施的熱風爐進行保溫, 使熱風爐表面溫度不超過50 ℃~ 60 ℃, 使熱風爐表面的熱損失在3% 以內。對保溫效果不好的熱風爐重新保溫。由於改燒燃氣後煙氣中沒有灰塵, 可以改用換熱效率高的省煤器, 充分利用煙氣的餘熱。
1. Reasonable utilization of heat preservation of hot blast stove and waste heat of flue gas. The hot blast stove without thermal insulation measures is insulated so that the surface temperature of the hot blast stove does not exceed 50 60 and the heat loss on the surface of the hot blast stove is less than 3%. Re-heat preservation of hot blast stove with poor heat preservation effect. Since there is no dust in the flue gas after burning the gas, the economizer with high heat transfer efficiency can be used to make full use of the waste heat of the flue gas.
2、增加對流換熱量。首先要清除爐筒、聯箱及其他受熱面的水垢和灰渣層。對水管熱風爐, 增設擋煙板, 增加煙氣流程和煙氣沖刷面積, 提高煙氣流速, 對火管熱風爐, 可在煙火管內安裝麻花狀旋流片或螺旋金屬絲, 增加煙氣的流速和邊界層的擾動, 提高對流換熱系數。
2. Increase convective heat transfer. First of all, the scale and ash layer on the hearth, header and other heating surfaces should be removed. For water p透水地坪ipe hot blast stove, add smoke shield, increase flue gas flow and flue gas scour area, increase flue gas flow rate. For fire pipe hot blast stove, twist swirl sheet or spiral wire can be installed in the fire pipe, increase flue gas flow rate and boundary layer disturbance, and improve convective heat transfer coefficient.