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发明公开
CN104498106A 一种煤热解气焦油回收设备和方法 有权

一种煤热解气焦油回收设备和方法
摘要：
本发明提供了一种煤热解气焦油回收设备和方法。所述煤热解气焦油回收设备包括焦油回收塔(1)，热解气和冷焦油在其中接触换热；第一外循环管路(2)，用于循环焦油回收塔(1)塔底的部分焦油，并增加焦油回收塔(1)塔底焦油流速；第二外循环管路(3)，沿着第二外循环管线(3)中物料的流向，第二外循环管路(3)上依次设置有蒸汽发生器(31)和固液分离器(32)，来自焦油回收塔(1)塔底的另一部分焦油通过蒸汽发生器(31)回收热量并通过固液分离器(32)分离出粉尘后作为冷焦油循环回到焦油回收塔(1)中与热解气接触换热。该煤热解气焦油回收设备不仅能够从煤热解气中有效回收焦油和能量，而且还能够减少甚至避免设备的堵塞。
摘要（英）：

The invention provides a coal pyrolysis gas tar recovery device and method. The coal pyrolysis gas tar recovery device includes a tar recovery tower (1), a first outer circulation pipeline (2) and a second outer circulation pipeline (3). The pyrolysis gas and cold tar in the contact and transfer heat in the tar recovery tower; the first outer circulation pipeline is used to circulate part of the tar at the bottom of the tar recovery tower (1) and increase of velocity the at the bottom of the tar recovery tower (1); a steam generator (31) and a solid-liquid separator (32) are sequentially arranged on the second outer circulation pipeline (3) along material flow direction of the second outer circulation pipeline (3); the steam generator (31) recovers the heat in another part of the tar at the bottom of the tar recovery tower (1), and the solid-liquid separator (32) separates dust as the cold tar, which circulates back to the tar recovery tower (1) and contacts with pyrolysis gas for heat transfer. The coal pyrolysis gas tar recovery device not only can effectively recover tar and energy from coal pyrolysis gas, but also can reduce or even avoid the blocking of device.

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