How does a low temperature carbonization furnace work?

Household waste. The working principle of low-temperature carbonization furnace equipment is that domestic garbage is at 50-280 degrees Celsius.

Gasification of a part of the plastic at low temperature, the cellulose waste into carbon substance, black carbon is an indispensable energy, its ignition point temperature is about 380 degrees Celsius, the combustion process rarely produces harmful chemical gases.

Low-temperature carbonization furnace.

The structure of the traditional waste low-temperature pyrolysis furnace is relatively fixed, and the treatment effect is not ideal, which is easy to cause secondary pollution. Fire-stamped environmental solid waste.

The pyrolysis furnace is a degradation equipment that integrates pyrolysis and melting gasification to form an involution degradation equipment, and by controlling the temperature and oxygen supply conditions of the equipment, the garbage can be dried, melted and pyrolyzed in the same furnace.

Household waste. Carbon black, a pyrolytic solid-phase product.

It reacts with a small amount of oxygen-rich air from the bottom of the furnace and falls into the bottom oxygen-free zone in the smoldering zone, and slowly forms negative ions in the anaerobic state for a long time.

Ash. Most of the rural household waste has not been sorted and contains a large amount of high-moisture components such as food waste. In different places, due to the difference in economic development and people's living standards, the composition and characteristics of domestic waste are also very different.

Anion ash after carbonization furnace treatment.

In the confined space, the hemicellulose structure of domestic waste carbonization has a branched chain, which is an unstable component in wood, which decomposes at 225 325, and the carbide is more susceptible to thermal decomposition than cellulose, and its pyrolysis mechanism is similar to that of cellulose.

It is mainly used for low-temperature carbonization treatment of pre-oxidized fibers. The asphalt-based oxide fibers produced by the oxidation process enter the low-temperature carbonization furnace. The wire belt is gradually heated to the rated temperature through several heating zones in the furnace.

Low-temperature carbonization furnace is a new type of carbonization technology equipment based on gasification cracking technology for combustible solid waste (garbage) treatment. Its basic working principle is to pass a small amount of magnetized air in the carbonization furnace to thermally decompose the treated combustible solid waste, and then use the generated heat for continuous carbonization of solid waste. Since magnetized air indirectly magnetizes the treated substance, the energy required for carbonization is reduced, and the carbonization efficiency is improved.

The temperature in the furnace is controlled at 250 280 during operation, so that the production of dioxins is basically avoided. The carbonization process does not require any fuel, and it is a new equipment that is environmentally friendly and energy-saving.

The carbonization furnace uses dry distillation.

The principle of carbonization, the reaction process of heating and decomposition under the condition of air isolation. Distilled wood produces a variety of gases, vapors and solid charcoal. The gas is fed into the bottom of the furnace through the return pipe for self-heating, and wood tar and wood acetic acid can be obtained during the carbonization process.

The flue gas generated during carbonization can be recycled and finally made into charcoal. The equipment is to load wood, bamboo tubes, branches, fruit trees and other raw materials into the furnace, and then heat up the ignition port to ignite the carbonized raw materials inside the furnace, the flue gas generated, after the flue gas purification system filters and removes dust and other temperament, the combustible flue gas is transmitted through the pipeline into the bottom fire channel of the moistening carbonization furnace for combustion, so as to achieve the purpose of secondary heating and heating, so that the raw materials in the furnace reach the temperature and are burned inside the furnace for cracking and carbonization to form charcoal.

The principle of the carbonization furnace is to use the flue gas generated by the internal combustion materials for secondary heating and calcination, and the flue gas is heated back to the bottom and burned in the charcoal making process.

Thermal energy can be recycled to achieve the effect of smoke purification, recycling and fuel saving, and at the same time, the acetic acid, tar and gas produced by materials can also be collected in the carbonization process.

The carbonization furnace takes the self-produced gas furnace as the heat source, uses methane gas through the cyclone, and the air enters the burner, the outlet temperature of the burner can reach 800 1200, and the flow rate can reach 3 5 meters per second, and the high-temperature air flow generated is heated in the periphery of the combustion chamber, it should be noted that when heating, the furnace temperature is 100 150 when the moisture in the furnace is the largest value, and when each kilogram of raw material rod enters the kiln, 4 8% water is brought in, and 1700kg of raw material can bring more than 100 kg of water, which is the enemy of carbonization, because the mechanism of carbon raw material rod is afraid of moistureTherefore, the moisture discharge system is an indispensable key, the moisture discharge time is 1 hour, when the furnace temperature in the carbonization chamber rises to 300, a large amount of combustible gas is produced in the furnace, each kilogram of raw materials can theoretically produce three cubic methane gas, these gases can be used for carbonization heating, drying heat source, the furnace temperature can be adjusted at will, low-temperature carbon is generally more than 400 (8 hours can be completed), high-temperature carbon is more than 600 (10 hours to complete).

The working principle of the mechanism carbonization furnace: the carbonization furnace uses the self-produced gas furnace as the heat source, uses methane gas to pass through the cyclone, and the air distribution enters the burner, the outlet temperature of the burner can reach 800 1200, and its flow rate can reach 3 5 meters per second.

When the initial carbonization equipment is preheated, the biomass gasifier is ignited, and the gasifier is supplied with gas for combustion and heating, waiting for high temperature.

The device for carbonizing the pre-oxidized filament (or phenolic precursor) is mainly a continuous furnace, and the batch furnace is the pre-oxidation furnace, which is carried out by increasing the temperature.

The continuous carbonization furnace is horizontal, but there are two types: (1) the filament tow adopts a furnace structure similar to that of the horizontal pre-oxidation furnace, but due to the short residence time, several slit-type heating plate-shaped long furnaces with different temperatures are mostly used, and the tow is not in contact with the heating surface; (2) For non-woven or felt-like pre-oxidized filament, the above-mentioned carbonization furnace can be used, but if the carbonization temperature is not high, it can also be carried out in the conveyor belt furnace.

Each carbonization furnace is equipped with inert gas inlet and outlet.

Summary. Hello, dear, the carbonization furnace adopts the principle of dry distillation carbonization, and the reaction process of heating and decomposition under the condition of isolating air. Distilled wood produces a variety of gases, vapors and solid charcoal.

The gas is fed into the bottom of the furnace through the smoke return pipe for self-heating, and wood tar and wood acetic acid can be collected during the carbonization process, and the flue gas produced during carbonization can be recycled and finally made into charcoal. The equipment is to load wood, bamboo tubes, branches, fruit trees and other raw materials into the furnace, and then heat up the ignition port to ignite the carbonized raw materials inside the furnace, the flue gas generated, after the flue gas purification system filters and removes dust and other temperament, the combustible flue gas is transmitted through the pipeline into the bottom fire channel of the moistening carbonization furnace for combustion, so as to achieve the purpose of secondary heating and heating, so that the raw materials in the furnace reach the temperature and are burned inside the furnace for cracking and carbonization to form charcoal.

Hello, dear, the carbonization furnace adopts the principle of dry distillation carbonization, and the reaction process of heating and decomposition under the condition of isolating air. Distilled wood produces a variety of gases, vapors and solid charcoal. The gas is fed into the bottom of the furnace through the belt of the return pipe for self-heating, and wood tar and wood acetic acid can be collected during the carbonization process, and the flue gas generated during carbonization can be recycled, and finally made into charcoal.

The equipment is to load raw materials such as wood, bamboo tubes, branches, fruit trees and other raw materials into the furnace, and then heat up the raw materials that ignite the inside of the furnace through the ignition port, and the flue gas produced is burned after the flue gas purification system filters the dust removal and other temperament, and the combustible flue gas is transmitted through the pipeline into the bottom fire channel of the moist carbonization furnace for combustion, so as to achieve the purpose of secondary heating and heating, so that the raw materials in the furnace reach the temperature and are burned inside the furnace for cracking and carbonization to form charcoal. Reputation.

The principle of the carbonization furnace is to use the flue gas generated by the internal combustion materials for secondary heating and calcination, which is that the flue gas returns to the bottom for heating and preparation, and the combustion bomb heat energy can be recycled in the process of charcoal making, so as to achieve the effect of clean smoke, circulation and fuel saving, and at the same time, the acetic acid, tar and gas produced by the leakage of materials can also be collected in the carbonization process.

The carbonization furnace takes the self-produced gas furnace as the heat source, uses methane gas through the cyclone, and the air enters the burner, the outlet temperature of the burner can reach 800 1200, and its flow rate can reach 3 5 meters per second, and the high-temperature air flow generated is heated in the periphery of the combustion chamber, it should be noted that when heating, the furnace temperature is the maximum moisture in the furnace when 100 150, and when each kilogram of raw material rod enters the kiln, it brings in 4 8% water, and 1700kg of raw materials can bring more than 100 kilograms of water, which is the enemy of carbonization. Because the machine-made carbon raw material rod is most afraid of moisture, it is crushed into powder when damp, which seriously affects the quality of carbonization, therefore, the moisture discharge system is an indispensable key, the moisture discharge time is 1 hour, when the furnace temperature in the carbonization room rises to 300, a large amount of combustible gas is produced in the furnace, and each kilogram of raw material can theoretically produce three cubic methane gas, these gases can be used for carbonization and heating, and the heat source for drying can be used for heating, the furnace temperature can be adjusted at will, and the low-temperature carbon is generally above 400 (8 hours can be completed), and the high-temperature carbon is 600 above (10 hours to complete).

The carbonization process of the carbonization furnace can generally be divided into the following three temperature ranges:

First, the drying stage.

From ignition to 160 °C, the water contained in the rod is evaporated mainly by the amount of external heating and the heat generated by its own combustion. The chemical composition of the mechanism rod has hardly changed.

Second, the initial stage of carbonization.

At this stage, the heat is generated mainly by the combustion of the rod itself, so that the furnace temperature rises to between 160 and 280. At this point, the wood material undergoes a thermal decomposition reaction and its composition begins to change. Among them, the unstable composition, such as hemicellulose, decomposes to form substances such as CO2, CO and a small amount of acetic acid.

3. Comprehensive carbonization stage.

The temperature at this stage is 300 650 .

During this stage, the wood material undergoes a rapid thermal decomposition, resulting in the formation of large quantities of liquid products such as acetic acid, methanol and wood tar. In addition, flammable gases such as methane and ethylene are produced, which are burned in the furnace. Thermal decomposition and gas combustion generate a large amount of heat, which increases the furnace temperature and the wood material is dry distilled into charcoal at high temperatures.

If we want to calcinate high-temperature charcoal, in addition to the above three stages, we also need to increase the heat, so that the temperature in the furnace continues to rise to about 800 1000, so that the volatile substances remaining in the charcoal can be discharged, the carbon content in the charcoal can be improved, the graphite structure of the charcoal will increase, and the conductivity will be enhanced.

1.Crushing & Drying - Materials with moisture content higher than 15% and size greater than 20mm need to be crushed first and entered into the dryer for drying;

2.Carbonization & Discharging - preheat the main carbonization furnace, and then the dried materials are conveyed to the feeder by the conveyor belt and then enter the carbonization main furnace for carbonization; Taking coconut shells as an example, after 18-20 minutes of carbonization, the material can be discharged through the water-cooled slag ejector.

3.Combustible gas generation - about 10 minutes after feeding, combustible gas is generated, first enters the cyclone dust removal system to clean desulfurization and dust removal, and then enters the condenser to be separated into wood vinegar and tar, and the remaining gas is led to the outside of the main furnace by the induced draft fan and heats the main furnace.

4.Hot flue gas reuse – part of the waste heat flue gas can be used to heat the dryer, and the remaining flue gas is discharged through the dust removal system (water cleaning, water spray, etc.).

The special environmentally friendly low-temperature carbonization furnace for domestic waste realizes the "recycling, reduction and harmlessness of plum jujube ears" of flue gas treatment, which can greatly purify the tail gas and optimize the environment. The air volume and negative pressure can be adjusted to fully ensure the residence time of the flue gas and fully purify the exhaust gas.

Low-temperature carbonization furnace.

The low-temperature carbonization furnace integrates incineration, acid removal, sterilization, dust removal, etc., and adopts a high-efficiency treatment process in the flue gas treatment, and the flue gas is discharged through the cold and heat exchanger, acid removal equipment, activated carbon adsorption, bag filter and other devices, which can meet the national emission standards and eliminate secondary pollution. Therefore, we can specifically analyze the specific use effect of low-temperature carbonization furnace:

1. After incineration, domestic garbage becomes ash slag, and the ash slag can be used as dry land farm fertilizer after screening.

2. The living and breeding areas of mosquitoes and flies have been completely eliminated.

3. The air in the former stinky landfill (stack) has become very fresh.

4. No pollution, no secondary pollution.

5. The reduction is obvious, the amount of garbage is reduced by 80% and the volume is reduced by 90%, and there is no problem of garbage mountain.

In response to the call for the construction of a new socialist countryside in the country, a low-temperature carbonization furnace suitable for villages and towns has been developed specifically for the harmless treatment of rural domestic waste.

Low-temperature carbonization furnace.

Precautions for the use of domestic waste incinerators:

1. The residence time of different garbage in the furnace is inconsistent, and the carbonization furnace must reasonably adjust the residence time according to the dryness degree and incineration effect of the garbage in order to make the garbage burn stably and completely.

2. When the furnace is shut down for a long time, please close the oil valve and power supply switch, and clean up the ashes in the furnace.

3. Check the oil quantity before operation, and replenish it in time if it is found to be insufficient.

4. Runtime, especially when it has just started. Pay attention to check the incineration temperature and maintain the temperature in the furnace to ensure the treatment effect.

5. Check the pressure in the furnace during operation and maintain negative pressure combustion.

6. Please open the furnace door after the garbage in the furnace is fully burned to prevent secondary pollution.

7. It is forbidden to burn in an empty furnace. It is forbidden to put a large amount of liquid organic combustibles into the furnace at one time to prevent deflagration.

8. The garbage incinerator should choose the corresponding model to incinerate the corresponding classified garbage, and should not be incinerated indiscriminately.

Low-temperature carbonization furnace.

The dioxins produced in the incineration of domestic garbage have obvious immunotoxicity, which can cause atrophy of the animal thymus, decreased cellular immunity and humoral immunity, etc., and can also cause damage. Dioxin exposure increases the risk of cancer in people. The low-temperature carbonization furnace has a large processing capacity and strong continuous incineration capacity, which fully realizes the requirements of "harmless, non-quantified and resource-based" treatment of waste, and is the main equipment for the safe treatment of various wastes in rural areas.