System for the dosing of additives/inhibitors containing magnesium oxide applied to fuels used for the production process of clinker/cement in rotary furnaces and steam generating boilers

Abstract

This invention refers to a system that is automated and controlled through a software; for the storage and application of additives and/or sulfur inhibitors containing magnesium oxide and their accurate dosing in solid or liquid fossil and alternate fuels, preferably used in rotary furnaces for the production of Clinker/cement and in steam generating boilers. Additionally, this invention is characterized for having the power to increase the use of fossil and alternate fuels without altering the characteristics of cements or concretes as the final product of cement.

1 . A system to store and dose the additives/inhibitors in fuels, which is characterized because it comprises:
 An ultrasonic level sensor ( 1 );   Storage tank(s) ( 2 ) of additives/inhibitors;   A recirculation pump ( 3 ) that homogenizes the additives/inhibitors during the time of the dosing;   A transfer pump ( 4 ) to receive the additives/inhibitors and filling of tanks;   A displayer ( 5 ) that allows to check dosing parameters on site regarding the quantity of dosing being carried out at that time;   A dosing pump ( 6 ) that operates through a diaphragm system and that may be both electric and pneumatic, which manually receives on and off and dosing increase or decrease signals on site by means of the display ( 5 ) or at the same time remotely from the central control room;   A pulse dampener ( 7 ) that receives variable pump pulses and transforms them into constant dosing quantities without variations because the dosing pump ( 5 ) acts through pulses, where the internal components of the bomb do not have contact with the additive;   A fluxometer ( 8 ) that sends information to the field display ( 5 ) and at the same time to the central control room regarding the quantity of additives/inhibitors that are being dosed at all times; and   A switchboard on site ( 9 ), where all the information of the system is collected in order to be sent to a central control room.   
     
     
         2 . The system according to  claim 1 , characterized because the additives/inhibitors contain magnesium oxide. 
     
     
         3 . The system according to  claim 1 , characterized also because the tank/tanks ( 2 ) have the ultrasonic level sensor ( 1 ) on the upper part in order to send inventory signals to an electronic control system. 
     
     
         4 . The system according to  claim 1 , characterized because the tank(s) ( 2 ) are manufactured with a special material to avoid their degradation by chemical components. 
     
     
         5 . The system according to  claim 1 , characterized also because the display ( 5 ) automatically, including manually, increases or reduces the dosing when required, allows to review inventories in tanks and sends data signals to the switchboard that will subsequently send the same information to a central control room. 
     
     
         6 . The system according to  claim 1 , characterized because the dosing pump ( 6 ) is specifically designed to support the wear it may have over time arising out of the chemical composition of the additive containing the magnesium oxide. 
     
     
         7 . The system according to  claim 1 , characterized because the board ( 9 ) has an analogous signal, preferably between 4 and 20 mA. 
     
     
         8 . The system according to  claim 1 , characterized because the board ( 9 ) allows also to see and handle information through a computer and a programmable logic controller that comprises a specific software that allows in turn to carry out different functions, including making dosing adjustments, making an inventory of the additive and turning the system on/off. 
     
     
         9 . The system according to  claim 1 , where the dosing of additives/inhibitors may be carried out to solid and liquid fuels. 
     
     
         10 . The system according to  claim 9 , where fuels are fossil fuels and alternate fuels. 
     
     
         11 . The system according to  claim 1 , characterized because it additionally comprises a manometer ( 10 ) and a valve ( 11 ) if the dosing is carried out to a liquid fuel. 
     
     
         12 . The system according to  claim 1 , characterized also because it carries out the dosing of additives/inhibitors containing magnesium oxide. 
     
     
         13 . The system according to  claim 1 , characterized because it succeeds in eliminating/reducing scales and rings causing instability in calcination lines in the cement industry, as well as the formation of scales that diminish productivity in steam production in boilers; in addition, it eliminates/reduces equipment corrosion and the acid rain, due to the use of liquid and solid fossil fuels, alternate fuels with any contents of sulfur, vanadium, silicon and aluminum. 
     
     
         14 . The system according to  claim 13 , characterized because it allows to feed the furnace with 160 ton/h, and an increase of 8.7% in the feeding of the furnace.