METHOD OF PLUME OPACITY COEFFICIENT REDUCTION AND COMBUSTION CHAMBER PERFORMANCE OPTIMISATION Russian patent published in 2009 - IPC F23C99/00 F23C13/00 F23J7/00 

FIELD: heating.

SUBSTANCE: invention relates to energy sector. Method of reducing the opacity coefficient of the plume discharged into the atmosphere by large industrial enterprises and units using combustion chambers implies the following stages: specifying efficiency of introduction to the furnace of chemical agents able of regulating the plume discharge into the atmosphere and inhibiting the corrosion and slag formation process, specifying efficiency of introduction to the fuel of processing chemical substances able of regulating the plume discharge into the atmosphere and inhibiting the corrosion and slag formation process, specifying efficiency of introduction of combustion catalysts to the fuel, specifying efficiency of introduction of combustion catalysts to the furnace itself by spraying a jet of the said chemical substances, specifying efficiency of the combination of the above chemical treatment methods. The said specification is carried out by calculations including calculating hydrodynamics and observation results as well as choice of the preferable chemical treatment method involving one or more of the above treatment methods. The method implies also the implementation of the chemical treatment method specified as described above by adding combustion catalysts to the fuel or by adding processing chemical substances to the furnace to control the plume. The chosen mode is aimed at the plume opacity coefficient reduction, combustion improvement and/or slag formation decrease, and/or decrease of weight loss at carbon burning, and/or corrosion reduction. Metal compounds are used as combustion catalysts; the metals are chosen from the group containing copper, iron, magnesium, calcium, cerium, barium and zinc. Magnesium oxide or hydroxide introduced to a solvent are used as processing chemical substances introduced to the furnace. Magnesium oxide or hydroxide suspensions are used as processing chemical substance introduced to the furnace. Concentration of a certain processing chemical substance introduced to the furnace in the form of a suspension or a solution amounts to approximately from 1 to 100% depending on the suspension or solution weight. Combustion catalyst is introduced either to the fuel or to the combustion chamber inside; the dosage intensity is varied from 0.2 to 0.8 kg per each 1000 kg of the carbon-containing fuel burnt in the combustion chamber. Treatment with the certain processing chemical substance introduced to the furnace is carried out by introducing the substance to the furnace inside in the amount of from 0.2 to 0.8 kg per each 1000 kg of the carbon-containing fuel burnt in the combustion chamber. Chemical treatment with the processing chemical substance introduced to the furnace is carried out at several levels.

EFFECT: invention allows for the reduction of the plume opacity coefficient, slag formation, corrosion processes.

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