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                当前位置:首页 > 技术知识 > 燃煤热风炉在改造之后发生了△哪些变化

                燃煤热风炉在改造之后发生了哪些变化

                文章出处:   发布时间:2019-07-30 17:24:43   浏览:5

                现在很多用户都会选择改造型的←燃煤热风炉,这种设备在使用的过程中出现了更多新的性能特↑点。如果你对它还不是很了解的话,可以先看一看下面的文章介绍,相信这些内容对大家之后的使用一定会◥有一些帮助的。具体内容如下:现如今,很多行业用到了改造型的热风炉,改造型高温热风炉是在内燃式热风炉的基础上,针对其存在的问题进行改造的热风炉。改造后,热风炉拱顶、隔墙、燃烧室和蓄热室都分别具有稳定的结构,且整体稳定性↘好,因此受到了各行业的认可。燃煤热风炉小编带大家一起准备下关于改造型高温热风炉的特点。
                Nowadays, many users will choose the reformed coal-fired hot blast stove, which has more new performance characteristics in the process of using. If you don't know much about it, you can take a look at the following article first. I believe these contents will be helpful for your future use. Specific contents are as follows: Nowadays, many industries have used the reformed hot blast stove. The reformed high temperature hot blast stove is based on the internal combustion hot blast stove, aiming at the existing problems of the reformed hot blast stove. After modification, the vault, partition wall, combustion chamber and regenerator of hot blast stove have stable structures respectively, and the overall stability is good, so they are recognized by all walks of life. Coal-fired hot blast stove small braiding everyone together to prepare for the characteristics of the transformation of high temperature hot blast stove. 一。改造型炼铁设备★高温热风炉的拱顶结构
                One. Arch Structure of High Temperature Hot Blast Furnace for Modified Ironmaking Equipment

                改造型高温热风炉一般采用圆锥球形。蘑菇形或改进的“大帽子”形拱顶,都ξ与大墙脱开,不坐落在大墙上,拱顶与大墙的接触部分填有耐火纤维,在热ζ 膨胀时两者可作滑动摩擦,自由膨胀:拱顶的令部重量支撑在环梁上,通过环梁传给钢壳,消除了炉墙膨胀、收缩以及不均匀变形对拱顶砌体的影响,也可使拱顶砌体和炉壳之间不用再留很大的空间,以防由于压应力大引起接缝开裂。
                Converted high temperature hot blast stove usually adopts conical spherical shape. The mushroom-shaped or improved "big hat" vault is separated from the wall and does not sit on the wall. The contact part between the vault and the wall is filled with refractory fibers. When the vault expands, the two can be sliding friction and free expansion. The weight of the vault's head is supported on the ring beam and transmitted to the steel shell through the ring beam, which eliminates the expansion and receipt of the furnace wall. The influence of shrinkage and non-uniform deformation on the vault masonry can also make the space between the vault masonry and the furnace shell no longer need to be large, in order to prevent the joint cracking caused by the large compressive stress.

                外燃式「热风炉形式a)地得式b)考贝式c)马琴式d)新日铁式。
                External combustion hot blast stove form a) Dede type b) Corbel type c) horse Qin type d) Nippon iron type.

                二。改造型高温热风炉的防晶间应力腐蚀措施
                Two. Measures to Prevent Intergranular Stress Corrosion in Modified High Temperature Hot Blast Furnace

                (1)热风炉炉壳采用细晶粒结构钢材。这种结构可▅以提高抵抗应力腐蚀破裂的能力。
                (1) The shell of hot blast stove is made of fine grain structural steel. This structure can improve the resistance to stress corrosion cracking.

                (2)在热风炉拱顶先涂一层防酸性好的涂层,再在整个热风炉壳体的内表面喷涂轻质耐酸的喷涂╲料,这样既可以起绝热作用,也可以保证腐蚀性冷凝液不与壳体直接接触,以进-步防止晶间应力腐→蚀。
                (2) Apply a good acid-proof coating on the dome of the hot blast stove first, and then spray light acid-proof coating on the inner surface of the shell of the whole hot blast stove. This can not only play an adiabatic role, but also ensure that the corrosive condensate does not contact the shell directly, so as to prevent inter-crystal stress corrosion.

                三。改造型高温热风炉的热室结构
                Three. Hot Chamber Structure of Modified High Temperature Hot Stove

                采用高格子砖和抗蠕』变性能的材质,可以改善蓄热室的热工性能和格子砖的稳定性。这种砖底部有三个槽孔,相应顶︾部有三个凸台孔,安装时凸台锁住凹槽,每块砖∏跨越下层砖的三块砖,互相交错咬合砌筑成整体型蓄热室结构,可防止相互错Ψ 位。蓄热室顶部格子砖砌成阶◤梯形,以利用拱顶下的有效空间,并可使气流分布更均匀。
                The thermal performance of regenerator and the stability of lattice brick can be improved by using high lattice brick and creep resistant material. There are three groove holes at the bottom of the brick and three convex holes at the top. When installed, the convex platform locks the groove. Each brick spans three bricks of the lower brick and interlaces with each other to build a whole regenerator structure to prevent mutual dislocation. The lattice bricks at the top of the regenerator are built into ladders to make use of the effective space under the vault and to make the air distribution more uniform.

                四。改造型高温热风炉的燃烧室△和陶瓷燃烧器
                Four. Combustor and Ceramic Burner of Modified High Temperature Hot Blast Furnace

                改造型高温热风炉的燃烧室采用眼睛形。所有衬砖〓均设有舌槽,以保证蓄热室有较好的气流运动条件和燃烧室有稳定的结构;燃烧室【砌体和大墙砌体之间填以包扎的耐火纤维,以防止热流短路。
                The combustion chamber of the reformed high temperature hot blast stove adopts the eye shape. All lining bricks are equipped with tongue grooves to ensure better air flow conditions in the regenerator and stable structure of the combustion chamber. Fire-resistant fibers are packed between the combustion chamber masonry and the wall masonry to prevent short-circuit of heat flow.

                陶◇瓷燃烧器可以克服由于火焰直接冲击隔墙,使该↑处产生很大的温度差和压力差而导致的隔墙开裂,又可以消除金属燃烧器在〖燃烧过程中出现脉冲引起共振对砖衬的破坏作用,还可以使空气※和煤气混合均匀,降低空气过剩系数,在相同的煤气条件下,运用陶瓷燃烧器提高燃烧温度。
                Ceramic burner can overcome the cracking of partition wall caused by the direct impact of flame on partition wall, which results in great temperature and pressure difference. It can also eliminate the damage of brick lining caused by resonance caused by pulse in metal burner during combustion process. It can also make air and gas mix evenly and reduce excess coefficient of air. Under the same gas condition, the ceramic burner is used to increase the combustion temperature.

                五。改造型高温热⊙风炉的隔墙改造型高温热风炉一般采用绝热密封隔墙,在隔墙的两层耐火砖之间增设绝热①砖,如轻质ㄨ黏土砖;在高温区采用热膨胀几乎等于零的硅砖;在隔墙下部瘩热室侧的绝热砖旁加设耐热合金钢板。
                Five. The partition wall of the reformed high-temperature hot blast stove is usually insulated and sealed, and insulating bricks, such as light clay bricks, are added between the two layers of refractory bricks of the partition wall; silicon bricks with almost zero thermal expansion are used in the high-temperature zone; and heat-resistant alloy steel plates are added beside the insulating bricks at the bottom of the partition wall.

                这些都是改造过的燃煤热风炉性能方面发生的具○体变化,如果你认为还有不清楚的地方可ぷ以进行深入的了解。
                These are specific changes in the performance of the retrofitted coal-fired hot blast stove, and if you think there is still something unclear, you can get a deeper understanding.

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