Material Design of Hemispherical Dome Coal Storage

The coal wharves already in operation at ports such as Caofeidian and Qinhuangdao all use windproof and dust-suppressing nets around the strip-shaped storage yards to meet environmental protection requirements. closed. The optimization scheme of the covered circular storage yard is adopted, which fully meets the requirements of environmental protection, can solve the environmental protection problem at one time, reduce the operating cost of the second phase, and meet the long-term needs of the company. Therefore, the most widely promoted in China is the fully enclosed circular coal yard. At the same time, with the improvement of localization of round coal yard equipment and the further optimization of civil engineering structure, under the premise of good geological conditions, the cost of a round coal yard with the same capacity and a semi-closed strip coal yard with a dry coal shed Rather, it can be seen that the circular coal yard has a good development prospect in the domestic coal storage and blending industry . Caofeidian adheres to the development of circular economy as the foundation of the district, accelerates the construction of a circular economic industrial chain in accordance with the principle of “reduction, reuse, and recycling”, and efficiently and comprehensively utilizes resources and energy to form a complete recycling system for renewable resources. Energy conservation and emission reduction, environmental protection, and gradually form a new type of industrialization base characterized by the development of circular economy.

Current situation and development trend at home and abroad: There is no precedent in China at present, and only the thermoelectric company under the US Department of Energy has this process in the world. In recent years, as a relatively new form of coal storage, the circular stockyard has been promoted and applied in the domestic coal storage and blending industry. It has outstanding environmental protection effects, beautiful appearance, high site utilization rate, and high degree of automation, especially in coastal climates. Reliable use in harsh areas. At the same time, with the localization of site equipment, the optimization of civil structure and the improvement of construction and operation proficiency, it can gradually overcome its own shortcomings, further reduce the cost, and make it more and more mature in the domestic coal storage and blending industry. Catalysts that meet environmental protection requirements form. At the same time, in the process of use and promotion, the principle of “first in, first out” must be strictly implemented, the old should be kept for the new, reasonable scheduling, and measures should be taken to compact coal piles and spray water to effectively inhibit the occurrence of coal spontaneous combustion. In the face of energy shortages, inefficient use of energy and environmental pollution .

Due to the many defects in the scheme of strip storage yard + precise coal blending bunker, referring to the development trend and successful examples of coal storage yard construction at home and abroad, on the basis of the strip storage yard + precise coal blending bunker scheme, combined with the actual situation of the project, the preliminary design A fully enclosed circular storage yard scheme is proposed. The plan plans 15 Φ120m fully enclosed circular storage yards, covering an area of 1209.45 mu, with a dynamic maximum storage capacity of 2.7 million tons. The loss of coal per ton in the traditional port coal open-air strip stockyard is 1%, and the loss of coal per ton in the dome-covered storage yard is 0.3%. According to the annual port volume of 16.7 million tons, the annual coal loss can be saved by 1670* (1%-0.3%) )*615 yuan=71.89 million yuan. Greatly reduce the pollution of coal dust to the environment, and realize the green and scientific development of enterprises. Moreover, the circular closed storage yard also meets the requirements for the layout of fire lanes. The net distance between each independent circular storage yard is about 20m, which meets the requirements of the fire distance; it is convenient to arrange the circular fire lane; it is easy to reasonably arrange fire water supply and fire extinguishing facilities. The coal storage capacity per unit area is about 15t/m2, and the land occupation is small, which is an indicator of land conservation. High degree of automation, safe and reliable operation. The hemispherical closed structure has a strong ability to resist severe coastal weather. The structure is completely closed, avoiding dust, etc., saving resources, protecting the environment, and meeting environmental protection requirements. The hemispherical reticulated shell structure, combined with the beautiful exterior decoration, stands on the seashore and will bring good landscape effects. Greatly reduce the pollution of coal dust to the environment, and realize the green and scientific development of enterprises.