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Abstract

THE AIM OF THE PROJECT WAS TO SHOW THE ADVANTAGES, EVEN FOR INSTALLATIONS OF RELATIVELY SMALL CAPACITY (A FEW MW), OF SUBSTITUTING OIL BY PULVERISED COAL WITH HANDLING, OPERATION AND AUTOMATION AT LEVELS OF CONVENIENCE SIMILAR TO THOSE AVAILABLE FOR LIQUID FUELS. TO THIS END, A BMW BOILER WAS INSTALLED AT THE WINTERSLAG MINE. THE PROBLEM WAS TO ENSURE EFFICIENT COMBUSTION IN A SMALL FURNACE AT RELATIVELY LOW TEMPERATURES. THE WATER TUBE BOILER WAS EQUIPPED WITH TWO ROOF BURNERS, AN ECONOMISER AND A BAG FILTER. PARTICULAR ATTENTION WAS PAID TO THE CONTROL SYSTEM. DURING COMMISSIONING, PROBLEMS OF FLAME STABILISATION WERE ENCOUNTERED; THE PROBLEM WAS SOLVED BY DISTRIBUTING THE AIR OVER THE LENGTH OF THE FLAME. IN ADDITION, SELF IGNITION OF THE PULVERISED COAL OCCURRED AS A RESULT OF THE AIR LEAKAGE AT THE BOTTOM OF HTE STORAGE SITE. TO OVERCOME THE HIGH LEVEL OF UNBURNT CARBON, FINER PULVERISED COAL WAS USED. ONCE THESE PROBLEMS HAD BEEN OVERCOME THE ORIGINAL OBJECTIVES WERE LARGELY ACHIEVED: THE BOILER LIT UP AUTOMATICALLY AND OPERATED FLEXIBLY BETWEEN 15 AND 100% OF ITS RATING AND NO DUST PROBLEMS WERE ENCOUNTERED IN THE HANDLING OF COAL AND ASH.

Additional information

Authors: KEMPENSE STEENKOLENMIJNEN KEMPENSE STEENKOLENMIJNEN, N.V., HOUTHALEN, HELCHTEREN, B, KEMPENSE STEENKOLENMIJNEN, N.V., HOUTHALEN, HELCHTEREN, B
Bibliographic Reference: EUR 11400 FR (1988) FS, PP 24, ECU 5.00, AVAILABILITY: EUROFFICE, LUXEMBOURG, BP 1003, GDL
Availability: Can be ordered online
Record Number: 1989126207200 / Last updated on: 1989-04-01
Category: PUBLICATION
Available languages: fr