Method for preventing accumulation of sludge in a coal water mixture storage tank
US5558434A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1995 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | May 15, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2025/912
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for preventing accumulation of sludge in a coal water mixture storage tank. The method involves: PA1 preparing a coal and water mixture storage tank having a circulation pump for taking a stored liquid out of the storage tank, a liquid conducting pipe vertically standing inside of the storage tank for conducting the stored liquid discharged from the circulation pump to a bottom of the storage tank, one or more nozzles for jetting the stored liquid out of the liquid conducting pipe toward a radial direction of the storage tank and provision for rotating the liquid conducting pipe having an axis at a center of the storage tank; PA1 determining a zone width r(m) of a stirring zone of one of the nozzles, using a formula of: EQU r.ltoreq.Q/(140.times.A.sup.0.5) PA1 where, A is a sectional area (m.sup.2) of a nozzle opening and Q is a flow amount of the stored liquid per one nozzle (m.sup.3 /h); PA1 determining a location of each of the nozzles dependent on the zone width; and PA1 jetting the stored liquid from the one or more nozzles in the radial direction of the storage tank while rotating the liquid conducting pipe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.