The utility model belongs to the technical field of fluidized bed. In order to solve the problem of uneven distribution of gasifier materials, improve gasification efficiency and reduce the requirement of ash residue and carbon residue of gasifier, the utility model provides an improved structure of a coal seeder for a fluidized bed gasifier, which includes four relatively independent coal feeding pipelines arranged at 90 degrees intervals outside the gasifier, and the bottom of the coal feeding pipeline is inclined and connected deeply. The dense phase section of the furnace is connected with the gasifier, and the connection between the coal feeding pipeline and the gasifier is also provided with a coal-sowing air jacket with the same inclined angle. The utility model improves the layout mode of the coal feeding pipeline and simultaneously feeds coal on the four sides of the furnace, thus ensuring the relative equilibrium of the material concentration and temperature in the furnace, and cooperating with the blowing angle, ensuring that the pulverized coal can reach the high temperature jet zone quickly after entering the gasifier, making the raw coal fully react, reducing the residue and char of the gasifier, and adopting the method of blocking the air intake at the upper part of the sowing air jacket to ensure the sowing. The balance of coal wind also protects the jacket line.
【技术实现步骤摘要】
一种改进结构的流化床气化炉播煤器
本技术属于流化床
,具体涉及一种改进结构的流化床气化炉播煤器。
技术介绍
目前传统的灰熔聚气化炉,进煤管一般为两根,布置在气化炉的同一侧,原料煤吹送入炉膛后,导致进煤侧的冷物料浓度大,温度低,离进煤侧较远的炉膛内冷物料浓度小,温度高,实际运行中,气化炉经常在进煤侧附近产生大量的低温物料堆积,外面由高温熔渣包裹,最后在运行过程中整块脱落堵塞拍渣口,最终被迫停炉。同时,进煤不均,导致部分原料煤未能进入高温区反应就已随气流排至渣口,最终排出气化炉,传统的流化床气化炉运行时的残炭较高,普遍在35%左右,灰渣中明显有大量未经反应的粉煤颗粒。而且,进煤管采用夹套形式,而蒸汽多从夹套下部进入炉膛,大量高温物料回流入夹套上部,导致播煤管在运行一两个周期后就被烧毁,被迫更换。
技术实现思路
本技术为了解决气化炉物料分布不均的问题,以提高气化效率,降低气化炉的灰渣残炭的要求,提供了一种改进结构的流化床气化炉播煤器。本技术采用如下技术方案:一种改进结构的流化床气化炉播煤器,包括绕气化炉外侧间隔90°布置的四根相对独立的进煤管线,进煤管线底部倾斜向下深入连接于气化炉的炉膛浓相段;所述进煤管线与气化炉的连接处还设有相同倾斜角度的播煤风夹套。所述进煤管线和播煤风夹套的安装角度相对气化炉竖向轴为60°。所述的播煤风夹套采用底部120°进气,上部240°通过焊接封堵。本技术具有如下有益效果:1、本技术改善了进煤管道的布置方式,采用90°均布,炉膛四侧同时进煤,从而保证炉膛的物料浓度、温度相对均衡;2、进煤管线设置在气化炉浓相段位置,并配合吹送角度(60 ...
【技术保护点】
1.一种改进结构的流化床气化炉播煤器,其特征在于:包括绕气化炉(1)外侧间隔90°布置的四根相对独立的进煤管线(2),进煤管线(2)底部倾斜向下伸入连接于气化炉(1)的炉膛浓相段;所述进煤管线(2)与气化炉(1)的连接处还设有相同倾斜角度的播煤风夹套(3)。
【技术特征摘要】
1.一种改进结构的流化床气化炉播煤器,其特征在于:包括绕气化炉(1)外侧间隔90°布置的四根相对独立的进煤管线(2),进煤管线(2)底部倾斜向下伸入连接于气化炉(1)的炉膛浓相段;所述进煤管线(2)与气化炉(1)的连接处还设有相同倾斜角度的播煤风夹套(3)。2.根据权...
【专利技术属性】
技术研发人员:侯永军,周光,高志钢,郑永志,张国华,
申请(专利权)人:山西晋城无烟煤矿业集团有限责任公司,
类型:新型
国别省市:山西,14
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