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Technical guide for charcoal burning tunnel

We share this experience for beginners or are looking for wood-burning coal tunnel techniques to produce quality coal to meet customer requirements. And we also look forward to the comments from people who have had experience in the charcoal industry in Vietnam, to build a prestigious charcoal brand not only in the domestic market but also in the international market. Here are the steps:

Step 1: Selection of firewood material: must choose fresh firewood, heavy wood. Cut 50-70cm long, diameter of 5cm or more, if the diameter is more than 30cm, the car must be double.

Step 2: Raw fuel wood: The ingredients are arranged in sequence and have a dashboard at the bottom of the oven. The request was tight and tight to the top of the oven.

Step 3: Burning Furnace:

The first phase: the first few days of the firewood use dry wood, burning strongly even using electric fans blowing into the burning to create heat to dry water in the fuel wood, this process lasts 3 to 5 days depending to the technician to get the stove and the burning material.

Intermediate stage: After drying the material, the smoke in the chimney begins to turn the smell of spicy, until the strong smell of the pungent begins to close the chimney. / 3 chimneys left about 5cm, this action is to reduce the exchange of gas to burn the gas to burn in the fire only smoldering (also for this reason, the brothers in the industry called gas stove or anaerobic furnace). Note that during this period we do not use dry wood for gathering, mainly by fresh firewood or firewood with poorly maintained fire retention and fire integrity but the chambers must always be red 'reed'. This is also the decisive stage of the success of a batch of coal, if the strong, strong coal will be light, high fire and coal gas will be heavy weight and standard. At this stage of observation in the chimney, blackened tar resin lasts 8 to 10 days

The final stage: the ripening stage of charcoal for 2 to 3 days, at this stage smoke began to move pleasant aroma, smoke sparse and gradually reduced to only see the heat is mainly. At the dry plastic oil chimney and start to moss is a sign of coal ripening, at this stage the technician must test the coal at the hole, if it is ripe close to the bottom, the last stage is completely closed chimney and combustion chamber with brick and mud to finish the fire. Note: when the cap should be sealed very carefully, if the opening gap to open the air gap, the furnace will long off the heat that can not even extinguish it.

Step 4: Wait for the coal to cool down: the time for the oven to turn off and gradually to 10-15 days. To ensure the safety when opening the oven door we have to prepare adequate fire protection equipment to avoid the case of coal fire. The charcoal must be left in a dry, lined, sun-sheltered area to ensure that the coal is not damp.