Langsung ke konten utama

Optimization of Biomass-Coal Cofiring in Coal Fired Powerplant

Biomass-coal cofiring has been commonly performed by a number of coal power plants in Europe and America with a primary motivation for reducing the environmental impact of emissions. Currently the percentage of cofiring biomass with coal is still small on average below 10%. It can also occur due to a limited supply of wood pellets. But in terms of operational cofiring biomass-coal fly ash will reduce significantly. On the other hand, if the percentage of biomass-coal cofiring is added will cause deposits on boiler pipes that will disrupt the process of heat transfer in the furnace causing inefficient use of fuel with one indicated by the high temperature of the fluegas.

There are three techniques commonly used in biomass-coal cofiring:
1.       Mixing of biomass and coal in the fuel handling system (then fed to the boiler).
2.       Setting up a separate biomass with coal, and then inject into the boiler.
3.       Gasification of biomass to produce a gas which is then burned in the boiler directly or using the integrated gasification combined cycle (IGCC) system.Worldwide reported more than 200 coal power plant that has been tested with biomass (IEA 2010).


Several cofiring  options are available on in coal powerplant, among others:
-Cofire with a low percentage of biomass, with a slight modification of the equipment.
-Cofire with a high percentage of biomass, by upgrading equipment.
- Convert/repower individual coal burners to be fired with biomass
- Convert/repower entire coal plants to be fired with biomass
- Cofire with torrefiedwood


Ash content in coal and biomass are generally differ quite large and moreover  ash chemistry are also a lot of different. This is factor that causes a lot or at least a deposit in the boiler pipes. Percentage of cofiring biomass-coal up to 10% is generally acceptable. Optimal percentage that causes minimal boiler tube deposits and significant reduction in fly ash can be searched based on the variable characteristics of coal and biomass are used.

Komentar

Postingan populer dari blog ini

10 Advantages By Making Energy Plantations for Wood Pellet Production

Assuredness of supply of raw materials is one of the key factors of business success in the wood pellets. There are two ways to obtain raw materials commonly done today: a. Buying from the owner of source of raw materials. b. Producing its own the availability of raw materials. While the 3rd way and there is still few for business owners make wood pellets is by mix way, which is partly provide by their own of raw materials and some rest buy from the other source of raw materials.
While examining at the types of biomass raw materials there are two kinds, namely : a. Woody biomass b. Non-wood biomass such as agricultural wastes (empty fruit bunches of palm oil trees, corn cobs, rice husks and so on). Currently woody biomass remains a priority to be products of wood pellets as a number of advantages over non-wood biomass which is generally an agricultural wastes, are included in the category of biomass pellets or agri-waste pellets. The comparison between wood pellet and biomass pellet …

Scrambling Biomass Waste Empty Fruit Bunch of Palm Oil: For Paper or Pellets?

In an effort to optimize the full potential of a number of oil companies are planning to process their wastes that resulting from the CPO production process. One of them is empty fruit bunches (EFB).  Two alternatives are being hotly debated is made pellets for energy and for the paper. Viewed from the business side, if it is profitable so is certainly not a problem for the production of both products. Availability of raw materials into one of the important factors in terms of production and business in general.
Further analysis can be done by looking in more detail in the production process technology, the amount of investment, ROI, environmental aspects, sustainability of core business (palm oil) and benefits of the products produced are a number of factors that will make it easier to eventually choose one. Further know more detail about the characteristics of each business such products will also further increase the stability of both products. In the end, the higher score determi…

Wood Briquette Left Behind 25 Years of Wood Pellet

Common areas with wood burning application it will be appropriate to use wood briquette and less suitable when using wood pellets. Various areas in various parts of the world use wood for heating (wood burning stove or boiler) or for cooking. If the ratio of wood as fuel is much so the business of  wood briquette production will be more attractive than wood pellets. Globally wood briquette are less popular than wood pellets, so the wood briquette production is also far below the wood pellets. Wood briquette also has its own characteristics compared to wood pellets.




In general, wood briquette production is also much easier than wood pellets. The particle size, raw materials, moisture content and operations slightly more stringent than the requirements for the production of wood pellets. All wood pellets have a cylindrical shape which is only distinguished diameter of the cylinder, and a commonly used the diameter of 6 mm and 8 mm, while the wood briquette in addition to its shape can …