Introduction to Coal and Storage Methods
Coal is the main energy source for steam power generation, mainly composed of carbon, hydrogen, oxygen, nitrogen, sulfur and phosphorus, etc. The sum of carbon, hydrogen and oxygen accounts for more than 95% of the organic matter, which is a very important energy source, and also an important raw material for the metallurgical and chemical industries, and there are several classifications of lignite, bituminous coal, anthracite, and semi-anthracite. In the past, a lot of coal storage is open storage, but the coal stored in this way is easy to deteriorate and lose the high combustion value, and the coal is easy to weather after being dried in the sun, and pollute the environment with the gust of wind everywhere. Therefore, with the increasing requirements of coal enterprises for automated production, silo type coal storage has been widely developed and used.
The main advantages of cylinder storage coal are:
1, good environmental performance, completely prevent the spread of coal dust pollution
2、Reduce the coal quality degradation caused by heat loss due to rain and fog.
3、Improve the utilisation rate of unit land and low operating cost compared with heap storage.
Introduction of Concrete Silo
In order to ensure the safe operation of the power plant, the power plant needs a large amount of coal resources, so the choice of concrete silo to store coal is the best choice. Concrete silos can store a certain amount of coal to prevent interruption of fuel transport which may affect power production.
Cast-in-place reinforced concrete silo is a traditional and mature silo type, which is widely used in coal, mining, thermal power, metallurgy, building materials and other industrial systems. The main structure of the silo is reinforced concrete, the roof of the silo is reinforced concrete conical shell roof, the silo wall is reinforced concrete wall, the underground transport corridor is reinforced concrete structure, and the trestle bridge on the silo is steel structure. Concrete silos can reach a maximum diameter of more than 40-50m and a height of more than 50m.
Dazheng is recognised as a leader in the design and construction of reinforced concrete silos in China. Whether you are storing coal, clay, lime, sand, cement or other aggregates, our technical engineers can help you design the best solution to ensure the safe and economic construction of your concrete silo to maximise benefits.
Concrete silo features
1. Durable, long service life, generally more than 50 years;.
2. Small footprint, high land utilisation.
3. The silo wall is thick, heat insulation and heat preservation performance is good, the material is affected by the external temperature difference is small, suitable for long-term storage.
4. Self-unloading can be achieved, most of the bulk materials can flow into the car by its own gravity, reducing equipment loss and saving power costs.
5. Easy to mechanise loading and unloading, saving manpower and management costs.
6. Less maintenance, low maintenance cost.
Precautions and measures when storing coal
1. The position of the concrete silo near the silo wall is easy to cause the accumulation of coal resulting in dead space, where the accumulated coal will generate spontaneous combustion after long-term contact with the air. The high temperature generated by spontaneous combustion acts directly on the silo wall, which reduces the strength of the silo wall and causes great safety risks.
2. Due to the large amount of coal in the concrete warehouse and poor ventilation, when the flammable gas (methane, carbon monoxide) produced by the coal reaches a certain concentration, it may catch fire and burn or explode, which may cause accidents. In order to ensure safe production and personal and equipment safety, combustible gas alarm and automatic ventilation devices are installed in the coal bunker, which send out alarm signals and start fans for ventilation when the concentration of combustible gases reaches the lower limit of dangerous concentration.
Anyang Dazheng
Steel Silo Co., Ltd., founded in 2002 with a registered capital of 35.89 million RMB, is a large-scale specialized manufacturer and contractor of steel silos, steel structures, and grain machinery. The company has obtained international certifications for quality, environmental management, and occupational health and safety. It holds 3 invention patents and 54 utility model patents.
The annual production capacity of Dazheng Company is over 2 million cubic meters of steel silos and 36,000 tons of steel structures. The diameter of the steel silos can range from 2.8 meters to 30 meters. Single silo storage capacity reaches 20,000 tons. The height of multi-layer steel structure frameworks can reach 50 meters.
Dazheng has undertaken international projects in countries such as Malaysia, Vietnam, Kenya, South Africa, Eritrea, Russia, Kazakhstan, and Kyrgyzstan, establishing long-term stable cooperative relationships.
Anyang Dazheng Steel Silo Co., Ltd.
