Since last year, Hefei Sifang Phosphate Compound Fertilizer Co., Ltd. has been one of the nation's 10,000 energy-saving and low-carbon action companies and has actively implemented the implementation plan of “10,000 corporate energy-saving and low-carbon actions†jointly issued by 12 ministries and commissions including the National Development and Reform Commission and the Ministry of Industry and Information Technology. The introduction of new technologies, technological transformation of equipment and adjustment of product structure, etc., has embarked on a track of energy saving and low carbon development. In order to reduce product consumption, the company set up a technical research group for the difficulty and focus of ammonium phosphate production, effectively controlling coal consumption and steam consumption, and using the new and old extraction tanks in series to increase the reaction time between pulp and sulfuric acid, and to extract phosphorus. Increased by 1% or so, the monthly cost can be reduced by about 150,000 yuan; through the energy saving modification of the ammonium phosphate liquid ammonia evaporator, replacing the low-pressure saturated steam with heater steam condensing water, evaporating the liquid ammonia can save 0.5 tons of steam per hour. Not only reduces the cooling tower cooling condensate load, but also saves 3,375 tons of low-pressure saturated steam per year, more than 700 tons of standard coal, annual savings of 400,000 yuan. In order to realize solid waste reduction, recycling, and harmless treatment, the company initiated the research on the comprehensive utilization of phosphogypsum and completed a feasibility study for an annual comprehensive production project of 500,000 tons of phosphogypsum solid waste. The project was approved by the Ministry of Industry and Information Technology in 2011 and received financial support of 9.93 million yuan. After the project is completed and put into production, it can process about 500,000 tons of phosphogypsum per year, which not only digests the phosphogypsum waste discharged annually from the company's production facilities, but also reduces the existing industrial solid slag inventory. The company also invested more than 400,000 yuan to replace two ammonium sulfate slurry heaters in the old system, energy-saving emission reduction effect is very obvious. Under the same production conditions, the pressure of heating steam can be reduced by 0.1 MPa. According to preliminary estimates, only 1,200 tons of steam will be saved in this year alone. Slurry method ammonium phosphate device contains about 5% of excess sulfuric acid in the intermediate product phosphoric acid. If it can be recycled, it can not only reduce the acid consumption of ammonium phosphate, but also help to increase the content of phosphorus pentoxide in the finished ammonium phosphate. huge. The company has reformed the process and made technical changes to the original two phosphoric acid storage tanks. One of the 180 cubic meters of storage tanks was converted into a reaction tank and an agitator and material conveying system was added. The other 600 cubic meters The tank was converted to a settlement tank, and a climbing stirrer and a filter residue conveying system were added. The original production process of ammonium phosphate nutrients is 55%. After the acid-saving process, ammonium phosphate can reach 57% and the profit per ton of ammonium phosphate is 40 yuan. The company pays great attention to social benefits, continuously optimizes and adjusts its product structure, shuts down a set of 80,000 tons of sulfuric acid plants annually, and is currently transforming the 120,000 tons of sulfuric acid plant put into operation in 2009 to produce sodium metabisulfite. Sodium metabisulphite is one of the supporting projects for the chlor-alkali series of the new district of Anhui Zhongshun Co., Ltd. Its production line and supporting facilities adopt the most advanced domestic technological route and meet the requirements of environmental protection, safety, energy saving and emission reduction. The commencement of construction of this project is a key step for Sifang Phosphate Compound Fertilizer Co., Ltd. to take steps to adjust the product structure and take the fine chemical industry. It is of great significance to the double improvement of the company's environmental benefits and economic benefits. Numbers & Alphabets Puzzle Mat
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