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CONTINUOUS SLAG REMOVAL AND DEWATERING PROCESS

IP.com Disclosure Number: IPCOM000238457D
Publication Date: 2014-Aug-27
Document File: 4 page(s) / 125K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention discloses a “lipstick”-style valve that would be used for continuous slag removal and dewatering process, as embodied by the description herein.

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CONTINUOUS SLAG REMOVAL AND DEWATERING PROCESS

GOVERNMENT CONTRACT

This material is based upon work supported by the Department of Energy under Award Number: DE-FE0007859.  This report was prepared as an account of work sponsored by an agency of the United States Government.  Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.  Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.  The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

A "Lipstick"-style valve (Fig. 3) is used to continuously depressure a slurry of crushed slag and water coming out of the gasifier sump. This valve "stick" can be made of tungsten carbide to handle the abrasive service. Smart instrumentation can keep track of the wear rate such that the "stick" can be advanced to maintain the correct flow rate. The slag slurry is dewatered with a screen and conveyed to the slag slump. The water and any fines that pass the screen go to the fines slurry tank (see Fig. 1 and Fig. 2).

The current lockhopper system includes a large vessel that is about 4...