管道运输多用于运输哪些货物?

2025年03月15日 12:18
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现代管道运输是美国于19世纪中叶首先发明的,可是要寻根访祖,溯本求源,中国却是世界上最早使用管道运输流体的国家。早在公元前200多年,古人就建造了用竹管连通起来的管道,用于运送卤水,这可以说是现代管道运输的雏型。

使用管道运输的货物是流体的,如油品、天然气、煤浆和矿浆等。

世界上最大的输煤管道是美国的里梅萨煤浆管道,起点是亚利桑那州的卡因塔露天煤矿,终点是内华达州的莫哈夫电厂。全长439千米,管径为457毫米和305毫米两种。年输煤量为450万吨,该管道于1970年建成投入使用。

输煤管道属于固体料浆管道,固体的煤炭是无法通过管道运输的,怎么办呢?把煤炭制成可以流动的煤浆运输起来就会十分方便。输送煤的工艺流程以里梅萨输煤管道为例,具体来说是这样的:所输送的煤,先在露天煤矿进行精选;然后将煤粉碎成直径为50毫米以下的颗粒再运到制浆厂;制浆厂的棒磨机把煤粒湿磨为浓度约50%的煤浆;把煤浆输至储浆罐再掺水调剂至可供外输的煤浆,最后输入管道进行运输。

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