发明名称 |
Method of removing encrustations in evaporation plants |
摘要 |
A solution to be evaporated is passed through one or several evaporation stages. In each evaporation stage, the solution is circulated between a heat exchanger and an evaporating vessel, and steam is withdrawn from the evaporating vessel. For removing crusts, the evaporation in the respective evaporation stage is interrupted, and a cleaning suspension containing at least 3 wt % granular solids is circulated through the heat exchanger and the evaporating vessel. The solids, which have an abrasive effect, remove the crusts. Preferably, the solution to be evaporated is circulated through the evaporation stage for removing the crusts, where the heat exchanger is heated and the cleaning solution is evaporated to such an extent that solids crystallize out and a cleaning suspension is formed.
|
申请公布号 |
US5964982(A) |
申请公布日期 |
1999.10.12 |
申请号 |
US19970895295 |
申请日期 |
1997.07.16 |
申请人 |
METALLGESELLSCHAFT AKTIENGESELLSCHAFT |
发明人 |
ROLLER, GUENTER;STEIN, DIETER;WAGNER, ULRICH;ENGLMAIER, LUDWIG |
分类号 |
B01D1/26;B08B3/04;B08B9/02;C02F1/04;F28G9/00;(IPC1-7):B01D1/00 |
主分类号 |
B01D1/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|