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当前位置 -> 热风炉热风炉知识拆除热风炉前厂家需要做哪些准备工作? 发布时间:(9/5)浏览次数:316
 

拆除热风炉前厂家需要做哪些准备工作?

在进行热风炉拆除前需要注意的几件事情。因为在使用过程中有压力存在,所以在拆除完成之后一定要注意做好相关的测试,以免留下安全隐患。改造需要现有热风炉的相关部件给予拆除,那么在拆除时要注意关闭鼓风机并停止运转,当炉膛温度降到合适的温度之后,停止引风机、链条炉排,再由工人从拨火门进入炉膛内,拆除原有炉拱,并将炉膛内部清理干净,然后再拆除主机以及辅机。那么在拆除前有哪些需要做的准备工作呢?请看本文讲解。
Several things need to be noticed before the hot blast stove is demolished. Because there is pressure in the use process, we must pay attention to the relevant tests after the demolition is completed, so as to avoid the potential safety hazards. Revamping requires the removal of the relevant components of the existing hot blast stove, so when removing, attention should be paid to closing the blower and stopping operation. When the furnace temperature drops to the appropriate temperature, stop the induced draft fan and chain grate, and then the workers enter the furnace from the dialing door, remove the original furnace arch, and clean the furnace interior, and then Remove the main engine and auxiliary machine. So what preparations need to be made before demolition? See the explanations in this article.
(1)、拆除现场的交接确认
(1) Handover confirmation of demolition site
拆除前通常要进行现场确认是否停电,水、煤气等介质管道是否已经关闭,确认无误后方可进行拆除施工。拆除前先将煤气管道用盲板堵死(此项工作一般由甲方负责完成)。对于停炉后马上进行拆除作业的,要在拆除前先打开炉顶3个人孔并在炉壳上开孔,炉内进行降温,时间一天。拆除的废料运输,提前准备好自卸汽车,以便及时将拆除的耐材和废料外运。
Before demolition, it is usually necessary to confirm whether there is power failure, whether water, gas and other media pipelines have been closed, and the demolition construction can be carried out only after the confirmation is correct. Before dismantling, the gas pipeline should be blocked with blind board (this work is usually completed by Party A). For the demolition operation immediately after stopping the furnace, three manholes on the top of the furnace and holes on the shell should be opened before demolition, and the temperature in the furnace should be lowered for one day. In order to transport the dismantled refractories and waste materials, dump trucks should be prepared in advance.
(2)、煤气测定及警戒
(2) Gas determination and warning
一般在热风主管、烟道管等主管开孔。用煤气报警仪,同时进行气体检测,在气体符合安全要求后,人员进入拆除内部耐材,同时封闭施工区域,沿管道向外15米做为安全区,防止人员进入。同时安排专职人员警戒。拆除前将钢焦东路封路并安排专人进行警戒。
Usually in hot air pipe, flue pipe, etc. in charge of opening. With gas alarm and gas detection, after the gas meets the safety requirements, personnel enter the demolition of internal refractories, while closing the construction area, 15 meters outward along the pipeline as a safety zone, to prevent personnel from entering. At the same time, full-time personnel should be alerted. Before demolition, the East steel coke road will be closed and a special person will be arranged for vigilance.
(3)、热风炉拆除
(3) Removal of hot blast stove
拆除前在底部据基础约2500mm的部位进行切口,见图示红线部位。切口前先划线,选派两名气焊从两端距离地面2500mm位置,向内切割切割角度为170度,高度2500—3000mm的切口。为方便拆除底部耐材,减小倾倒阻力,切口呈图示,便于镐头机进入炉内清除炉壁及格子砖。沿切口,采用镐头机,将耐材清除到炉壳1/3---1/4的位置,将前端切口部位的热风炉耐材清理。选两名气焊,沿切口中心(如红线部位)同时向后部切割,切割到炉壳留1/3,采用液压剪从后部向前推。进行地面解体外运和耐材清理。
Before removal, incisions were made at the bottom according to the position of about 2500 mm of the foundation, as shown in the figure of the red line. Two gas welders were selected from the position of 2500 mm from both ends to the ground. The cutting angle was 170 degrees inward and the cutting height was 2500-3000mm. In order to remove the bottom refractory easily and reduce the dumping resistance, the incision is shown graphically, so that the pickaxe machine can enter the furnace to remove the furnace wall and checked bricks. Along the incision, the pickaxe machine is used to remove the refractory to the position of 1/3 - 1/4 of the shell, and the hot blast stove refractory at the front incision is cleaned up. Choose two gas welders and cut back along the center of the cut (such as the red line) at the same time. Cut to the shell and leave 1/3. Push forward from the back with hydraulic shears. Carry out surface decomposition, transportation and refractory cleaning. 

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