Two chemical projects in Ningxia have passed the energy conservation review

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Two chemical projects in Ningxia pass energy-saving review Author/Source: Coal Tar Deep Processing and Hydrogenation Technology Collaboration Group Date: 2021-11-22 Clicks: 10 On November 17, the dihydroxydiphenylsulfone project of Ningxia Lejian New Materials Technology Co., Ltd. and the technical upgrade project for an annual production capacity of 300,000 tons of calcium carbide at Ningxia Yinglite Chemical Co., Ltd. passed the energy-saving review conducted by the Autonomous Region’s Department of Industry and Information Technology. Ningxia Lejian New Materials Technology Co., Ltd. plans to invest 620 million yuan to build a dihydroxydiphenylsulfone production facility in the Ningdong Energy and Chemical Industry Base. The project is constructed in two phases in accordance with the principle of planning once and implementing it in stages. Phase 1 focuses on building public auxiliary facilities such as a 10,000-ton production facility for dihydroxydiphenylsulfone; Phase 2 involves constructing the 10,000-ton production facility for dihydroxydiphenylsulfone along with the necessary auxiliary facilities, thereby achieving an annual production capacity of 20,000 tons of dihydroxydiphenylsulfone. For Project 2, the comprehensive energy consumption per unit of dihydroxydiphenylsulfone (in equivalent terms) is no more than 582.61 kilograms of standard coal per ton, and the reuse rate of water resources exceeds 98%. The energy consumption per 10,000 yuan of industrial added value (in equivalent terms) is no higher than 0.79 tons of standard coal, which is significantly lower than that of the Ningdong Energy and Chemical Industry Base; this facilitates the achievement of energy-saving targets in this region. 
 Ningxia Yinglite Chemical Co., Ltd. plans to invest 730 million yuan in building a technical upgrade project for calcium carbide production with an annual output of 300,000 tons in the Shizuishan Economic and Technological Development Zone in Ningxia. Based on the existing 8 internal combustion calcium carbide furnaces (4×20,000 kVA and 4×16,500 kVA), this project involves the replacement of them with 4 closed-type calcium carbide furnaces, each with a capacity of 40,500 kVA. Additionally, 2 lime kiln production lines with a capacity of 600 tons each, as well as lignite drying production lines, are built, enabling an annual production capacity of 300,000 tons of calcium carbide. For calcium carbide, the electricity consumption per unit of product in the electric furnace is no more than 3045 kWh/ton, and the overall energy consumption per unit is no more than 0.798 tons of standard coal/ton – both values meet the advanced standards set in the \"Energy Consumption Limits for Calcium Carbide Products.\" As for slaked lime, the overall energy consumption per unit is no more than 150.53 kilograms of standard coal/ton, which meets the limits specified in the \"Energy Consumption Limits for Key Energy-Using Units in Ningxia.\" The reuse rate of water resources exceeds 97%. It falls under projects for reducing energy consumption and upgrading industries, which helps achieve the city’s energy-saving goals. The energy conservation review report emphasizes that, on the basis of implementing the energy conservation report (final version) and the various energy-saving measures suggested in the review findings, the project developers should improve and strengthen their energy conservation efforts, optimize energy utilization processes, and refine the layout of production workshops, process systems, and facilities in order to reduce energy losses. They must also put into practice the energy-saving measures outlined in the report, such as those related to process optimization, equipment efficiency, and management practices. Additionally, it is necessary to adopt advanced and suitable energy-saving technologies and processes.