Making briquettes from biomass is a high efficient way to save your energy bill as well as to dispose of biomass waste. As a kind of renewable energy, the biomass briquettes, such as wood briquettes, saw dust briquettes or charcoal briquettes, made by briquetting machine, is widely used both in industry and civil scale for heating as a substitute of conventional fossil fuel - coal in particular. Biomass briquettes can be made from wood, sawdust, crop straw, grass, civil waste and animal waste.
A briquette is manufactured by briquetting machine, also known as briquette maker or briquette press But how does a biomass briquetting machines work? Take making wood briquettes for example, under circumstance of high pressure and temperature, the lignin, which is a kind of polymer in the wood, originally working as a support of wood cell wall, will turn to a sort of plastic matter that stick the briquettes together. That is also why any glue, or binder namely is not necessary in briquetting process, and it is also the reason why the outside of a wood briquette is smooth and shinning.
The briquettes, known as a compact heating fuel, has several advantages over the traditional fossil fuel:
Given that briquetting industry is an overwhelming trend that will continue being hot and will contribute more and more portion in renewable energy marketing, different designs of briquetting machines are rolled out. By and large, two essential kind of briquette press can be observed in the market: stamping type briquette press, screw press briquetting machine, and hydraulic briquetting machine, each type has its unique power driven pattern. What interesting is that In Chinese market, especially an integrated machinery that can both make briquettes and pellets is eye catching. Scientifically speaking, by looking at its working theory, this dual function machine is just a improved type of stamping briquette press.
From the view of feedstock that a briquette machine is processing, there are charcoal briquettes maker, wood briquettes maker, paper briquettes maker, even metal briquettes maker.
Below a presentation of comparison among 3 types of biomass briquetting machine that are mainstream on the market:
|hydraulic briquetting machine||stamping type briquetting machine||screw press briquetting machine|
|Raw material size /mm||3 - 20 mm||3 - 20 mm||3-5mm|
|Raw material moister required||6% - 18%||10% - 20%||8% - 12%|
|Product density/ g/cm3||0.8 - 1.2||0.9 - 1.3||1 – 1.3|
|Capacity/ kg/h||125||800 - 1200||180 - 1000|
|Energy consumption/ kW/t||40 - 60||40 - 50||70-80|
|Mould lifetime||1000h - 1500h, cooling not required to mould||1000h - 1500h, cooling required to mould||1500-2000|
|PLC||yes||Yes, and vibration resistance||N/A|
|noise||Lower than 70db||Higher than 85db||Around 80db|
|Working environment||Dust free||Dust free||With smoke and ash|
|Users||High requirement with automatic control and working environment, complicated raw material component||High requirement with capacity (1 - 5 t/h)||Typically the briquettes will be further processed to charcoal briquettes|
Looking into the figures in the table, you will find that all 3 types of briquetting machines are eligible for making quality briquettes. The difference lies in users’ requirement. Which one will you choose?