In the development of human history, earth kiln and carbonizing furnace, as two important carbonization equipment, played an important role in different periods and technical backgrounds. Although they are different in appearance, structure and concrete operation, their basic principles and functions have many similarities. This paper will discuss the similarities between them from the aspects of working principle, application environment and application field.

First, the basic principles are similar

Both earth kiln and carbonization furnace operate on the core principle of heating organic matter at high temperatures to induce a pyrolysis reaction in an oxygen-deficient or oxygen-isolated environment, thereby producing charcoal or other forms of carbonaceous materials. During this process, volatile components in the organic matter are decomposed and released, while the remainder is converted into carbonization products.

Second, the realization of anoxic environment

Both the traditional earth kiln and the modern carbonizer need to work under the conditions of lack of oxygen or isolation from oxygen. For earth kiln, this anoxic environment is usually achieved by sealing the kiln body with mud, bricks or other materials. During operation, after the organic matter in the kiln is ignited, the craftsman will control the air inlet and the air outlet to adjust the air circulation, thus ensuring the smooth pyrolysis process. For carbonizer, its design is more scientific and precise. Modern carbonizer usually adopts closed metal structure, and is equipped with advanced temperature control system and gas recovery device, which can control oxygen content and temperature change more accurately, thus improving carbonization efficiency.

Third, energy utilization and environmental protection benefits

Both devices can effectively reuse resources, and transform waste wood, crop straw and other organic substances into high value-added carbon materials. In this process, they not only reduce the pollution of waste to the environment, but also provide a sustainable solution to the energy shortage problem. In addition, the environmental protection performance of modern carbonizer is further improved, and its tail gas treatment system can recover the combustible gas generated in the pyrolysis process for heating or power generation, thus realizing the comprehensive utilization of energy.

Fourth, a wide range of applications

The charcoal and charcoal materials produced by earth kiln and carbonizer are widely used in many fields. For example:

1.Energy field: as a clean and efficient fuel, charcoal is widely used in home heating, barbecue and industrial heating.

2. Agricultural field: charcoal powder can be used as soil improver to improve soil permeability and water retention capacity.

3. Industrial field: high-quality carbon materials are often used in metallurgy, chemical industry and activated carbon production.

4. Art and traditional crafts: charcoal is also used in artistic creation such as painting and sculpture.

Fifth, Differences arising from technological advancements

Although they have many similarities, with the development of technology, carbonizer has gradually surpassed the traditional earth kiln in performance and efficiency. For example, carbonizer can better control the temperature and reaction conditions, thus producing higher quality and more stable carbon materials. In addition, carbonizer has higher safety and environmental protection performance, which is suitable for the needs of modern industrial mass production.

In a word, both earth kiln and carbonizing furnace take pyrolysis technology as the core in essence, and heat organic matter through lack of oxygen to generate carbon materials. Although their development background and technical level are different, they have shown great value in energy utilization, environmental protection benefits and multi-field applications. In the future, with the continuous progress of science and technology, these traditional and modern technologies will play a more important role in sustainable development.