The utility model relates to a temperature-raising device for a red mud filter entering and ending-washing sedimentation tank, which comprises an end-washing sedimentation tank for the sedimentation process. The end-washing sedimentation tank is connected to the red mud process through a red mud filter pipeline. The red mud filter pipeline is provided with an extraction tube, which connects the heat exchanger tube process, and the shell inlet of the heat exchanger connects the exhaust steam outlet of the dilution tank for the dissolution process. The outlet of the shell side of the heat exchanger is connected with a hot water tank, and a regulating valve is arranged on the outlet pipe and the red mud filter pipe at the back end of the outlet pipe. The utility model introduces the red mud filtrate into the heat exchanger and uses the exhausted steam discharged from the dilution tank in the digestion process to raise the temperature of the red mud filtrate to 95 +2 C, thereby avoiding the hydrolysis loss of alumina, improving the heat utilization ratio of the exhausted steam in the dilution tank, and realizing the purpose of energy saving and consumption reducing.
【技术实现步骤摘要】
赤泥滤液进末洗沉降槽提温装置
本技术涉及氧化铝生产
,尤其涉及一种赤泥滤液进末洗沉降槽提温装置。
技术介绍
传统的赤泥滤液从赤泥工序返回氧化铝厂直接进入沉降工序的沉降槽内,其温度仅80±2℃,对末洗沉降槽温度影响较大,导致氧化铝水解损失的现象,而溶出工序稀释槽的乏汽直接排入大气,造成热量损失。
技术实现思路
针对现有技术的不足,本技术提供一种赤泥滤液进末洗沉降槽提温装置,有效利用溶出工序稀释槽排出乏汽的热量加热赤泥滤液,解决由于赤泥滤液温度低造成的氧化铝水解损失现象。本技术解决其技术问题所采用的技术方案是:所述赤泥滤液进末洗沉降槽提温装置包括沉降工序的末洗沉降槽,所述末洗沉降槽通过赤泥滤液管道连接赤泥工序,所述赤泥滤液管道上设有引出管,所述引出管连接换热器的管程,所述换热器的壳程的进口连接溶出工序稀释槽的乏汽出口,所述换热器的壳程的出口连接热水槽,所述引出管及引出管后端的赤泥滤液管上均设有调节阀。在本技术提供的赤泥滤液进末洗沉降槽提温装置的一种较佳实施例中,所述换热器采用壳管式换热器。在本技术提供的赤泥滤液进末洗沉降槽提温装置的一种较佳实施例中,所述换热器内的套管设 ...
【技术保护点】
1.一种赤泥滤液进末洗沉降槽提温装置,包括沉降工序的末洗沉降槽,所述末洗沉降槽通过赤泥滤液管道连接赤泥工序,其特征在于:所述赤泥滤液管道上设有引出管,所述引出管连接换热器的管程,所述换热器的壳程的进口连接溶出工序稀释槽的乏汽出口,所述换热器的壳程的出口连接热水槽,所述引出管及引出管后端的赤泥滤液管上均设有调节阀。
【技术特征摘要】
1.一种赤泥滤液进末洗沉降槽提温装置,包括沉降工序的末洗沉降槽,所述末洗沉降槽通过赤泥滤液管道连接赤泥工序,其特征在于:所述赤泥滤液管道上设有引出管,所述引出管连接换热器的管程,所述换热器的壳程的进口连接溶出工序稀释槽的乏汽出口,所述换热器的壳程的出口连接热水槽,所述引出管及引出管...
【专利技术属性】
技术研发人员:刘西,尤玉华,王艳军,
申请(专利权)人:开曼铝业三门峡有限公司,
类型:新型
国别省市:河南,41
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