FIXED GRATE

The fixed grate combustion system is a very simple and effective system, and it is widespread in certain applications due to its reliability and robustness. At INNERGY we have more than 50 years of experience designing, manufacturing and commissioning combustion systems for a wide variety of fuels, among which we find different types of conventional biomass, complex biomass and waste.

At INNERGY, since we started manufacturing and designing combustion systems, we have not stopped developing and improving this technology.

What makes up the fixed grate combustion system?

A fixed grate combustion system is recommended for those projects where solid fuels are used, such as simple biomasses with low ash content and medium humidity. This is the main part of the equipment where the combustion process of the biomass or waste used takes place. The fixed grate is constituted mainly by a set of cast iron grates on which the biomass for combustion is located. This is known as the combustion surface and its proper dimensioning as a function of the defined power is fundamental.

Together with the biomass industrial boiler, the combustion chamber with fixed grate is entirely designed and manufactured at the INNERGY factory.

Where does the fixed grate fit into the heat generation and application process?

The fixed grate is located inside the combustion furnace, just before the body of heat recovery in the form of thermal oil, water or steam, to which all the heat generated by the biomass or waste yields. This combustion furnace is made up of a metallic structure, which must be correctly dimensioned and covered with refractory brick with a high content of alumina, to guarantee a long service life for both the fixed grate and the combustion chamber.

  • POWERS

  • Equipment capable of reaching powers up to 8,000,000 kcal/h

  • Underground furnace

  • Constructed on site in accordance with our plans and specifications

  • FUEL

  • Biomasses, several types. Wide ranges of humidity and size

  • MANUAL LOADING

  • Avoids high temperatures and heat losses in the work zone

  • EMERGENCY BYPASS

  • Between the chamber and the chimney

  • LOAD LEVEL CONTROL

  • In the event of excessive filling

  • CENTRIFUGAL COMBUSTION AIR IMPELLER FAN

  • It has a speed variator, introducing the air in the furnace and refrigerating the grates to improve and reactivate combustion

  • AUTOMATIC LOADING. PNEUMATIC DISPENSER SYSTEM

  • Suitable, uniform load guaranteed throughout the grate. Avoids incoming cold air and possible delays in the combustion flame

  • CONTROL AND SAFETY

  • Allow efficient development

  • MANUAL ACCESS DOOR

  • Facilitates teamwork

  • OPTIONS

  • Adaptation to special requirements. Other voltages and electrical frequencies for different countries

  • FURNACE CONSTRUCTION

  • With refractory bricks with high alumina content, separated from the outside wall by low-density spongy insulating bricks

  • INTEGRATION IN FACILITIES/PLANTS

  • With PLC and touchscreen

  • COMBUSTION CHAMBER EXTERIOR

  • Face brick and treadplate in passage area



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