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Content archived on 2024-04-15

NUMERICAL SIMULATION AND TESTS OF A TWO STAGE COMBUSTION BURNER FOR LIQUID AND SOLID WASTES TO EXTEND THE APPLICATION FIELD OF AN EXISTING PILOT UNIT WITH A THERMAL POWER OF 1 MW

Objective

TO DEVELOP A NUMERICAL MODEL TO BE USED, WITH THE RELEVANT MODIFICATIONS, BY INCINERATOR MANUFACTURERS

THE OBJECTIVES OF THIS RESEARCH PROGRAMME ARE:

.- IMPROVEMENT OF THE BERTIN BURNER DESIGN FOR INDUSTRIAL WASTES, AS SCRAP AUTOMOBILE REFUSE, ALREADY TESTED ON THE PILOT UNIT,
.- ADJUSTMENT OF THE DESIGN AND DETERMINATION OF THE OPTIMUM WORKING CONDITIONS FOR ANY TYPE OF WASTE,
.- DETERMINATION ON DIMENSIONS AND OPERATING CONDITIONS OF ANY WASTE COMBUSTION PLANT, USING THE NUMERICAL MODEL AS A TOOL,
.- FURTHERMORE, THIS MODEL MAY BE USED, WITH MODIFICATIONS, BY INCINERATOR MANUFACTURERS, WHO MAY BE DEVELOPING SIMILAR PROCESSES, AS ROTATING OR STEPPED FURNACES WITH TWO-STAGE COMBUSTION.

THE RESEARCH PROGRAMME INCLUDES 5 STEPS:

.- PHASE 1 : PYROLYSIS MODEL (9 MONTHS).
PHYSICAL ANALYSIS OF PYROLYSIS OF LIQUID AND SOLID WASTE FUELS. DEFINITION OF THE MODEL CONTENTS. CREATION OF THE PYROLYSIS MODEL FOR THE DEFINED SOLE-PLATE GEOMETRY. TUNING AND ANALYSIS OF THE CALCULATED RESULTS.
.- PHASE 2 : COUPLING WITH A 3D MODEL (4 MONTHS).
GRID OF THE COMBUSTION CHAMBERS. COUPLING OF THE PYROLYSIS SUBMODEL WITH AN EXISTING AEROTHERMOCHEMICAL 3D MODEL, EG SPRINT OR FLUENT, AVAILABLE BOTH AT FLOW SIMULATION AND AT STE BERTIN. TRIALS WITH A WELL-KNOWN PLASTIC WASTE IN ORDER TO GIVE A REFERENCE FOR THE CALCULATION CODE. COMPARISON BETWEEN CALCULATED AND MEASURED RESULTS. IMPROVEMENT OF THE MODEL.
.- PHASE 3 : CODE RUNNING (4 MONTHS).
STUDY OF THE INFLUENCE OF THE GEOMETRIC AND WORKING PARAMETERS ON THE COMBUSTION BEHAVIOUR, POLLUTANTS EMISSION AND THE HEAT BALANCE OF THE BURNER. PARAMETRIC ANALYSIS IN ORDER TO IDENTIFY TECHNOLOGICAL IMPROVEMENTS OF THE BURNER AND THE BEST OPERATING CONDITIONS FOR A GIVEN WASTE. IMPLEMENTATION OF THE CALCULATION CODE ON THE BERTIN PRIME COMPUTER.
.- PHASE 4 : BURNER EXPERIMENTS (4 MONTHS).
IMPLEMENTATION OF THE BURNER MODIFICATIONS ACCORDING TO THE RESULTS OBTAINED DURING PHASE 3. EXPERIMENTS CARRIED OUT ON THE EXISTING PILOT UNIT IN ORDER TO COMPARE MODEL RESULTS WITH MEASUREMENTS AND TO SHOW THE BENEFICIAL EFFECTS OF THE MODIFICATIONS INDICATED BY THE CALCULATIONS. THE GLOBAL MODEL WILL BE VALIDATED AND TUNED WITH THESE RESULTS.
.- PHASE 5 : REPORTS AND CONCLUSIONS. RESULTS. TUNING OF THE FINAL VERSION OF THE MODEL. FLOW SIMULATION

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Coordinator

Bertin et Cie S.A.
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Address
59,Rue Pierre Curie 59
78373 Plaisir
France

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