Because all pores of the straw are exploded and water can penetrate into the straw, it also renders access for those microorganisms and enzymes that are digesting the straw into biogas.
This ensures a relatively quick and effective digestion in the biogas plant.
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The direct feeding of dry briquettes into bioreactors does not impact the hydraulic capacity of the biogas plant. It is unnecessary to suspend the briquettes in raw manure or digested manure under severe stirring or such before adding to reactors. No extra tanks fitted with stirrers are needed.
In the case of a briquetting plant being installed at the biogas plant and briquettes being added directly when produced, process heat is also added to the reactors, i.e., the kinetic energy dissipated into the straw is recycled into reactors. The electric power used is recycled as heat into the biogas process.
Also, the straw briquettes do not pass heat exchangers and possible clogging here is avoided.
The compressed straw is emptied for atmospheric air, notably free nitrogen and oxygen, and air is therefore not added to the biogas, when using straw briquettes. This is highly advantageous, when the biogas is upgraded to natural gas quality.
Local circumstances and conditions will determine if it is advantageous to develop local satellite stations for local collection and processing of straw into briquettes before storing and transportation to one or more biogas plants.
Briquetting uses very little energy and no water for the pre-treatment. The electrical power use of app. 75 kWh per tons straw is mainly reused as heat in the biogas reactor if the processing plant is placed at the biogas plant.
Conventional pre-treatment of straw before a biogas or bioethanol process such as steam explosion at 180-200°C and 30-40 % dry matter is a highly water and energy demanding process, which also impacts the hydraulic capacity of the biogas plant negatively.
Straw inevitably contains gravel, soil or sand, or other impurities. A straw line removes all impurities before the briquetting. The mechanical press is not exposed for this wear and tear and the impurities are not imported into the biogas facility.
Briquetted straw gives rise to high and stable biogas yields.
Straw generally contains 18-19 MJ/kg dry matter primary energy corresponding to app. 500 Nm3 methane per tons straw dry matter.
The straw composition is 60-70 % cellulose and hemicellulose, 15-20 % lignin, other organics (5-10 %) and minerals (app. 5 %). Normally, it is the bulk of cellulose and hemicellulose, which, after briquetting, is digested into biogas, while lignin is largely un-digested.
With briquetting, biogas yields of app. 250 Nm3 methane per tons straw can be achieved increasing to app. 300 Nm3 methane per tons under optimal conditions.
A hydraulic retention time of 30-40 days at thermophilic temperatures are needed to achieve these yields. The highest yields can be achieved with addition of potassium lye during briquetting.
The quantity of straw, which can be added to a manure based biogas plants &#; the organic loading rate &#; is equally important. It is clearly demonstrated that 10 % straw briquettes relatively to the liquid manure can be added without any difficulties. See a comparison below:
Biogas yields using dry straw; increased production
Pre-treatment Methane yield
(m3 methane/tons straw) *Estimated max quantity to be added manure plants
(in % of slurry) Increased yield per tons slurry (in Nm3 methane)
Shredded straw 200 1-2 % 2-4 10-20
Other mechanical processing of straw 225 2-6 % 5,5-13,5 27,5-67,5
Briquetted straw 250 8-12 % 20-30 100-150
Briquetted straw with catalyzer 300 10-12 % 30-36 150-180
Several manure based biogas plants, if not most plants, are at the brink of ammonia inhibition. In any case it is virtually impossible to add significant quantities of nitrogen containing wastes such as poultry manure.
Straw briquettes help alleviating ammonia inhibition and stabilize the digestion process. An increased yield of slurry is achieved when co-digested with straw briquettes.
Mechanical briquetting of straw for biogas purposes is the most tested, documented, and safest technology of using straw for biogas purposes.
For more Straw Briquetting Machineinformation, please contact us. We will provide professional answers.
We are proud to offer this cost effective solution for industrial utilization of straw for biogas.
In Kinetic BioFuel A/S we are proud of our technology and company, and enjoy our work.
Briquetting Press Machines are widely used to generate heat as an industrial fuel like steam era in boilers, warming reason, drying process and gasification plant to supplant existing customary fuel like coal, wood and excessive fluid fuel like FO, Diesel, LDO, lamp oil and so on.
Biomass coal is the chief forthcoming fuel of the world. It's an unbeatable quality asset towards economical, ecological, & advanced environmental conservation. Briquetting Press Machines helps in doing best from waste & cash from waste & also by using briquettes; we create a dust free & pollution free environment for our country.
Biomass Briquettes As Fuel
Use of Renewable Briquettes as a fuel has shown very excellent & promising results. In general, Briquettes are majorly used in following industries / units:
Gasifier System Applications, Ceramic Industries, Refractory industries, Solvent Extraction Plant, Chemical Industries, Dying Units, Milk Plant, Food Processing Industries, Vegetable Plants, Textile Unit, Spinning Mill, Lamination Industries, Leather Industries, Brick Making Units, Rubber Industries, Bio mass based power plant, Any Industrial Thermal Applications.
Briquetting Plants make briquette from the Agriculture waste and forestry waste. These wastes are changed over into strong round and hollow shape. The significant wastes which can be utilized are Ground nutshell, Cotton stalk, , Saw dust, Mustard stalks, , Wood chips, Soybean husk, Veneer buildups, Coir essence, , barks and straws ranger service squander etc..
High Quality Sawdust Briquette
A scope of Biomass Briquettes are prepared as a substitute of lignite, Coal, Wood in a modern evaporator and block oven for warm application to produce heat. Biomass Briquettes are non ordinary wellsprings of vitality, Eco-accommodating, Reusable in nature, non dirtying and prudent. Utilization of the bio coal is expanding step by step and has exceptionally requested a capable business sector because of its fuel cost sparing and contamination free attributes. So, if you want to own your biomass briquetting factory, but don&#;t know what knowledge you need to know. Click on the link below to consult us !
The calorific estimation of Biomass Briquette is around - Kcal/Kg. In biomass briquette Net Utilization is around 85 % so the loss of warmth is very nearly 15 % while in lignite the use is around 53 % and the loss of warmth is around 47 %. In these respects, biomass briquettes are the most useful and important !
Characteristics of briquettes produced from different types of biomass Type of feedstock Ash content % Moisture content % LHV, MJ/kg Density t/m³ Straw 7.30
The biomass briquetting is the best renewable wellspring of vitality for environment and economy. It's a completely Eco-friendly green energy project. ABC Machinery is a professional machinery production and sales company, and is committed to turning agricultural waste into environmentally friendly finished products. The GCBC screw briquette making machine below is highly energy-efficient and easy to clean. To learn more about the performance and quotation of the equipment, please do not hesitate to contact us !
Briquettes are fair substitutes for black coal and have several advantages over it:
In a word, not only do briquettes have high potential to generate energy, but it also helps in reducing land, soil and air pollution. Moreover, this process of recycling biowaste and converting it into fuel is very economical and also has low maintenance cost. Briquettes are rapidly gaining popularity and are becoming the first choice of industries as a primary source of energy. Therefore, if you want to start an industrial biomass briquetting making plant, we will provide you with some professional advice on the selection and purchase of briquette making machines.
Want more information on Biomass Briquette Machine? Feel free to contact us.