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ROCHEM DUAL PURPOSE PLUS
Product Code : ROCHEM DUAL PURPOSE PLUS
DESCRIPTION ROCHEM DUAL PURPOSE PLUS is a specially formulated blend of organic dispersing agents, water displacing surfactants and combustion catalysts. This product is designed to meet two objectives:
1. Improve the precombustion characteristics of light and heavy fuels. 2. Introduce combustion catalysts into the combustion zone to improve combustion efficiency and minimize fireside corrosion and deposit problems.
GENERAL SPECIFICATIONS Appearance : Dark Brown Liquid Specific Gravity 20Â°C : 0.87 Flash Point PMCC : Above 66Â°C / 150Â°F Viscosity : 60 sec at 400 by Redwood viscometer no. 1
â¢ Dual Purpose Plus reduces fuel consumption and pollutant emissions.
â¢ Dual Purpose Plus improves the quality of fuel.
â¢ Dual Purpose Plus removes the existing deposits and keeps the injector nozzles clean.
â¢ Dual Purpose Plus protects the system from corrosion.
â¢ Dual Purpose Plus minimizes the Sludge formation.
â¢ Dual Purpose Plus reduces maintenance costs.
ROCHEM DPP will reduce sludge and gum formation in tanks, feed lines, oil pre-heaters, strainers and burners. Sludging potential of oil is greatly increased by the presence of water. ROCHEM DPP contains an emulsion breaker which separates the water from the oil. This separation will also reduce some serious fireside slags. The sodium ion in saltwater if carried into the combustion chamber will reduce the melting point of vanadium forming a molten slag.
ROCHEM DPP contains combustion catalysts which function by providing the fastest possible reaction time of the air fuel mixture assuring that complete combustion is achieved in the shortest time possible. This results in the minimization of soot, fly ash, intermediate combustion products and unburned particulate matter.
ROCHEM DPP will prevent LOW TEMPERATURE CORROSION by allowing minimum excess air conditions to be approached as a result of improved combustion reactions and by eliminating the catalytic effect that produces sulphur trioxide. ROCHEM DPP further protects against low temperature corrosion by preventing acidic deposits of particulate matter.
By way of review, sulphur dioxide and sulphur trioxide are normal combustion products when firing fuels containing sulphur. The concentration of sulphur trioxide in the flue gas in relation to sulphur dioxide is dependant on the excess air employed and the presence of vanadium and iron oxide. It has been estimated that 75% of the sulphur trioxide is formed from sulphur dioxide in the combustion area. The reaction occurs as a result of sulphur dioxide combining with nascent oxygen and is aided by the catalytic effect of vanadium and iron oxide.
Sulphur trioxide concentration in the flue gas determines the acid dew point. Acid dew point is defined as that temperature at which the water vapour present in the flue gas as a result of combustion can combine with sulphur trioxide to form sulphuric acid. Low temperature corrosion results when the flue gas cools below the acid dew point. This condition is found in pre-heaters, economizers, cold end of boilers and in the stack. This problem is particularly severe when maximum heat recovery from the flue gas is desired.
ROCHEM DPP will reduce air pollution by minimizing the amount of undesirable constituents in stack gases. Burning of fuel containing sulphur will result in the formation of sulphur dioxide and sulphur trioxide trioxide. The use of ROCHEM DPP and good combustion controls will retain most of the sulphur in the dioxide from and minimize the formation of the highly undesirable sulphur.
Unburned residues and fly ash are also minimized in the stack gas because of the improved combustion reaction. This results in the maintaining of a clean stack and the reduction of undesirable particulate matter. The complete burning of the fuel will also eliminate the unwanted products of partial combustion such as aldehydes and ketones.
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