How did the ancients burn charcoal, and how did wood burn into charcoal?

The process of burning charcoal by the ancients was as follows:

1.Material selection: The raw materials used in charcoal burning are mainly wood, including cypress, pine, willow, etc. In the process of material selection, people usually choose wood with a hard texture and moderate density to ensure the quality of the charcoal block.

2.Cutting and chopping wood: After the raw materials are selected, people go through the steps of cutting and chopping wood. First, the cutter would chop down the tree with an axe or saw. They then cut the felled trees to the right length for subsequent disposal.

3.Stacking charcoal: In the process of stacking charcoal, people will pile up the chopped wood in a certain way so that the carbonization process can be carried out.

The shape of the charcoal pile can be round, square or rectangular, but regardless of the shape, care should be taken to leave a vent when stacking the charcoal so that the gas during the carbonization process can be discharged.

4.Make a fire and burn charcoal: Before making a fire, put two finger-thick wooden branches on the chimney mouth to observe the degree of charcoal burning.

When lighting the fire, use dry firewood to light the fire, and after the kiln body is heated with increased firepower, switch to wet firewood and burn it slowly over a small fire, so that the kiln body in the charcoal room is slowly dried and the wet charcoal wood is slowly dried. At this time, black smoke comes out of the chimney, and after burning for about a day, increase the heat until the chimney is green smoke, and observe that the wood branches on the chimney mouth have been charred, indicating that the wood in the charcoal baking room has been fully carbonized.

The above is the process of burning charcoal by the ancients.

Clay kiln. The technology of burning charcoal is mainly in two aspects:1

The key to building a kiln to burn charcoal is actually called oxygen-free carbonization, and the key to building a kiln lies in the sealing aspect, air intake and exhaust, and easy to install the kiln, easy to seal, etc. 2.Carbonization technology, of course, this requires a certain amount of experience, the general sequence is to load the kiln, ignite, at the beginning of the oxygen to let it burn, and when it is burned to half or 5 molecules 2, close the oxygen that is, seal the kiln door, let it slowly burn and decompose in a state of lack of oxygen, and decompose carbon monoxide.

Harmful gases such as wood tar and wood vinegar leave only charcoal, which is charcoal.

How is charcoal burned?

Charcoal is a dark brown or black porous solid fuel that is left as a form of wood or wood raw materials that have undergone incomplete combustion, or pyrolysis under the condition of insulating air.

Charcoal is an impure amorphous carbon that retains the original structure of the wood and the residual tar in the pores. Charcoal was used for the smelting of bronzes of the Shang Dynasty and iron tools of the Spring and Autumn Period and the Warring States Period in China, and its hygroscopicity was used to observe climate change.

Extended Information; Charcoal is not formed by burning wood, usually charcoal is the product of incomplete combustion of wood, which retains the original structure of wood. Charcoal has a wide range of uses, such as painting, makeup, medicine, gunpowder, carburizing, etc., and the most common use of charcoal is as fuel.

In addition, during the Spring and Autumn Period and the Warring States Period in China, charcoal was used to smelt ironware, and its hygroscopicity was used to observe climate change. In modern times, charcoal can also be used as a fuel for metal smelting, food and light industry, a reducing agent for electric furnace smelting, and so on. It is also often used in the chemical industry, often used as a raw material for carbon disulfide and activated carbon.

The classification of charcoal can be divided into hard and broad charcoal, broad-leaved charcoal, pine charcoal and other types. It is differentiated according to the different materials, usually the material of hard charcoal is hard hardwood, such as birch and other materials. Hardwood charcoal is a mixture of hard and soft hardwood wood.

Pine charcoal is charcoal made from pine wood or other coniferous wood. In addition, there are some fruit shells that are formed as fruit shell charcoal.

The manufacture of charcoal is generally made in small batches, which is to cut a certain amount of small shrubs, dig a pit in the ground, and put the trees into the pit to burn (note: the carbon oxidation genus shall not be made); Do not, and then extinguish or bury it with water or soil, and be careful to seal it, otherwise the carbon will burn and play. Large quantities have to do a special kiln, and there are also special tree species, generally most of them are oak trees (the name may be different), and to have experienced people are responsible for grasping the timing of the seal, in case of burning or insufficient burning, burning leads to a reduction in production and a relatively short time, insufficient burning leads to a lot of heads, that is, smoke.

Summary process: material preparation--- combustion--- sealing --- taking (finished product).

There are two ways to make it:

1) Kiln firing method, build a kiln with clay, fill it with wood, ignite the plate from the dao kiln door or fire door, so that the wood is carbonized in the kiln, and the volatiles escape and the charcoal remains;

2) Dry distillation, that is, dry distillation of wood. According to the extinguishing method of the kiln, there are two kinds of black charcoal and white charcoal.

Brief introduction of charcoal kiln: there are many forms and structures of kilns, such as Zhejiang kiln, carp kiln, wooden scoop kiln, Hunan wood kiln and Sichuan wood kiln, fast iron kiln, machine kiln and so on. Usually, the method of extinguishing the flame in the kiln is called the kiln extinguishing method, and the obtained charcoal is called "black charcoal".

When the wood is carbonized in the kiln, it is taken out of the kiln while it is hot, and then the method of extinguishing the fire with wet sand is called the extinguishing method outside the kiln. During the flame-outing process, the charcoal is calcined in contact with the air, and the outside of the charcoal is oxidized, and the resulting white ash adheres to the charcoal, which is called "white charcoal". White charcoal is harder than black charcoal.

Charcoal is first burned in a kiln with a tree, burned to a certain extent and quickly extinguished in water, and then it becomes charcoal after a period of time.

First of all, you need a simple kiln, and put some large pieces of wood at the bottom first

<> placed in such a way that air can enter from the bottom.

<> put some wood in the middle that has not burned through, and this is where the wood first burns.

The wood is placed radially from large to small, and the middle temperature is high to burn large wood.

It looks like it's full.

I stick in with a long pole through the ventilation hole and ignite the fire.

After ignition, the bottom gap of the kiln is filled with sand and the chimney <> is inserted

Burn ...... quietly

After the <> is almost burned, the hole for smoke is also plugged and the kiln is allowed to cool for 24 hours.

<> the appearance of opening after cooling.

<> sift out the right size of charcoal, pack it, and you're done.

Method steps for burning charcoal with wood: Step 1:

Location. Generally speaking, the address should be located relatively far away from the place where there are residents, and then dig a kiln. Dig out the dirt and leave only about two or three smoke holes.

Step 2: Cut down the tree. The key step in charcoal burning is, of course, the need for trees. Find a sturdy tree, cut it down, cut it to a length of less than a meter, and drag it to the kiln where it has been dug.

Step 3: Burn. First use low heat to dry the moisture on the tree, then increase the heat a little and start roasting.

Step 4: Seal. Seal the kiln and continue to bake, to ensure that there is no gap, generally speaking, about three days is fine, but if there are many trees, of course, it will take more time.

Step 5: Take the charcoal. The kiln has been sealed for a long time, so there will be a heavier smoke when taking it, so you should cover your mouth and nose tightly before taking out the charcoal.

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Ask a question, hello teacher. I use an iron bucket to burn charcoal, how to burn it?

Charcoal is generally made by people to build a kiln with clay, fill it with wood, and burn it from the kiln door or fire gate, so that the wood is carbonized in the kiln, and the volatiles escape and the charcoal remains. That is, the dark brown or black porous solid fuel left over from incomplete combustion of wood or wood raw materials or pyrolysis under the condition of isolated air.

Charcoal should be divided into two kinds, one is the log charcoal made directly from broken wood or logs, and the other is the machine-made charcoal made by using a charcoal machine.

1. The old-fashioned process is to burn charcoal, that is, the trees are cut into sections, ignited in the charcoal kiln, burned to a certain extent, the air of the charcoal kiln is closed, and the waste heat continues to heat the wood for dry distillation, the water and wood tar are boiled out, and the wood is carbonized into charcoal. This is similar to the past when families burned firewood and held charcoal.

2. Now there is a method of using wood chips and other waste processing mechanisms to make charcoal, pressing these wastes into shapes, indirectly heating them in the furnace for dry distillation, and carbonizing these raw materials into charcoal.

Method Step 2

1. To make traditional charcoal, you must first dig a charcoal kiln and fill the kiln with half-dried whole firewood.

2. Then seal the kiln, and then burn the small kiln into the kiln with a large fire from the fire hole dug when digging the kiln for a day or two. The principle is to heat the firewood in an oxygen-deficient environment.

3. With the banning of earthen kilns in recent years, there are few left, so charcoal burners will focus on the carbonization furnace. Airflow carbonization furnace and dry distillation carbonization furnace are two different equipment. The dry distillation carbonization furnace can be more effective in the flue gas and meet the requirements of environmental protection.

Hope mine can be helpful to you.

How to make charcoal:

One is the kiln firing method, that is, a kiln is built with clay, filled with wood, and then ignited and burned, so that the wood is carbonized in the kiln and volatiles escape. The other is dry distillation, that is, the wood is placed in a dry distillation kiln and heated and decomposed into charcoal under the condition of air isolation, which is wood dry distillation.

Charcoal is a dark brown or black porous solid fuel left over from incomplete combustion of wood or wood-based raw materials or pyrolysis in the absence of air.

In fact, no matter what production process is used, charcoal is the product of volatilizing the gases and liquids in the wood by heating. The rest of the material is the solid combustible part of the wood, so that it can only heat up and not smoke when burned.

1.Generally, the wood is placed in the kiln, and after ignition, it is first allowed to burn freely, and after a while, the kiln is sealed and let under the condition of lack of oxygen until it is extinguished;

2.Burn the wood and boil it thoroughly, quickly pour the red-hot wood with cold water, and all that is left is charcoal. Note; You have to burn the wood thoroughly.

Summary. Hello, dear, I am happy to answer for you, the wood for burning charcoal has green oka, birch, hemp oak, bitter oak, elm, maple (maple), fruit wood (apple, pear, lychee, jujube, etc.).

What wood can burn charcoal.

Hello, dear, I am happy to answer for you, the wood for burning charcoal has green oka, birch, hemp oak, bitter oak, elm, maple (maple), fruit wood (apple, pear, lychee, jujube, etc.).

The best raw material for burning charcoal is the wood of the genus C. glauca, Quercus spp., Quercus spp., Quercus spp., and Quercus spp., which burns charcoal from this kind of wood both hard and durable, and the masses call it "steel charcoal". It is followed by the wood of the genus Quercus and Chestnut of the family Shellaceae, as well as other hard broad-leaved materials such as oak, camellia, oak, red frieze, purple stem, eucalyptus, red nan, loquat, heather, rowan, mosquito mother tree, water silk pear, etc., and the quality of the charcoal fired is also good.

The main component of charcoal is carbon, the ash content is very low, the calorific value is about megajoules, in addition to hydrogen, oxygen, nitrogen and a small amount of other elements, the content of which has little to do with the tree species, mainly depends on the final temperature of carbonization. Charcoal is a hydrophobic substance, the ash content is within 6%, the pores account for more than 7% of the charcoal volume, the specific gravity is generally, the calorific value depends on the carbonization conditions, generally about 8000 kcal kg, the reducing capacity of charcoal is greater than that of coke. Charcoal has a large number of micropores and transition pores, so that it not only has a high specific surface area, but also has good adsorption properties after the tar substances in the pores are excluded.

Complete combustion with oxygen produces carbon dioxide, and incomplete combustion produces the toxic gas carbon monoxide.

Summary. Glauca wood, birch, hemp oak, bitter oak, elm, maple (maple) what wood can burn charcoal.

Glauca wood, birch, hemp oak, bitter oak tree, elm, maple (maple) fruit wood (apple, pear, lychee, jujube, etc.).

Paulownia, poplar.

There are many types of wood that burn charcoal.

Charcoal burning: It is to burn the branches of the tree through a series of firing into charcoal that everyone is familiar with. Step 1: Site selection; Step 2: Cut down the tree. Step 3: Burn. Step 4: Seal. Step 5: Take the charcoal.

This can only be made if there is a special construction site.

Can apple trees be used for charcoal?

OK. Thank you.

You're welcome <>

Wood must be smoldered in order to be carefully prevented from being burned into charcoal.

Wood has to be smoldered to be burned into charcoal, the form remains unchanged, and the professional technique Kuannahu is called incomplete burning. Wood is mainly made up of carbon and water, and to turn wood into carbon, water needs to be removed. Charcoal burning is to cut the trees into sections, ignite them in the charcoal kiln, burn them to a certain extent, close the charcoal kiln air in, and the waste heat continues to heat the wood for dry distillation, the water and wood tar are boiled out, and the wood is carbonized into charcoal.

Uses of Charcoal:

1. Metallurgical industry.

In the production of non-ferrous metals, charcoal is often used as a surface flux, when the non-ferrous metal is melted, the surface flux forms a protective layer on the surface of the molten metal, so that the metal is separated from the gas medium, which can not only reduce the splash loss of the molten metal, but also reduce the saturation of the gas in the molten material.

A large amount of charcoal is also used in the production of crystalline silicon, and the charcoal used in the production of crystalline silicon should not contain green charcoal heads and excessive ash.

2. Make carburizing agent.

All steel products that require high surface hardness and wear resistance, and good toughness in the center, should be carburized. The carbon-containing mixture used to carburize steel products is called a carburizing agent. Charcoal alone has a poor carburizing effect.

Therefore, charcoal is often used as raw material, and then a certain amount of contact agent is added to make carburizing agent.

3. Preparation of sulfur dioxide.

Charcoal is the best raw material for making carbon disulfide, and the charcoal used to make carbon disulfide should be hard, large in volume, small in ash and moisture, and high in fixed carbon. <>