首钢股份公司实现高炉炉顶零排放
近日,首钢股份公司高炉实现了炉顶料罐煤气及粉尘全回收,真正达到了零排放,填补了我国冶金史上的一项空白,此技术有着广泛的推广价值。
在高炉生产过程中,由于炉顶料罐不断向炉内加料,会产生大量的煤气和粉尘。此前,由于缺少相应的技术和设备,这些煤气和粉尘,通过料罐放散阀直接排放到大气中。此外,外排煤气和粉尘时,放散阀的尖啸声也对厂区甚至周边的居民区形成噪音污染。由于煤气和粉尘回收难度非常大,目前国内最先进的水平尚停留在半回收状态。首钢股份公司从环保治理和节能双重角度出发,提出要彻底根治这一顽疾。
首钢股份公司联合首钢国际工程公司,拓展思路、大胆创新,坚持贯彻工程紧凑高效型、循环节约型、清洁环保型以及数字型的要求,精心设计、持续改进。设计人员和技术人员对高炉炉顶均压放散系统和干法除尘系统,以及相应的配套系统都制定了周密的改造方案。近日,改造已经完成,并成功投入使用。该方案具有总图布置紧凑、占地面积小、工程投资低、建设周期短和对生产影响小等诸多优点。据测算,仅一座2650立方米高炉,每年全部回收粉尘的同时,还可回收高炉煤气1997万立方米,产生良好社会效益的同时,每年可形成经济效益约160万元。
Zero Emission from Top of Blast Furnace in Shougang
Recently, the blast furnace of Shougang Co. has realized the full recovery of gas and dust from top charging tank, and has really achieved zero emission, which fills a gap in the history of metallurgy in China. This technology has extensive popularization value.
In the process of blast furnace production, a large amount of gas and dust will be produced due to the continuous feeding of top charging tank into the furnace. Previously, due to the lack of appropriate technology and equipment, these gas and dust were directly discharged into the atmosphere through the tank release valve. In addition, when gas and dust are discharged, the scream of the release valve also causes noise pollution to the factory area and even the surrounding residential areas. Because the recovery of gas and dust is very difficult, the most advanced level in China is still in the state of semi-recovery. Shougang Co., Ltd. from the dual point of view of environmental protection and energy saving, proposes to thoroughly eradicate this stubborn disease.
Shougang Co., Ltd. jointly with Shougang International Engineering Company, expands its thinking, innovates boldly, adheres to the requirements of compact and efficient engineering, recycling and saving, clean and environmental protection and digital engineering, and designs meticulously and improves continuously. Designers and technicians have worked out a thorough reform plan for blast furnace top pressure equalizing and releasing system, dry dust removal system and corresponding supporting system. Recently, the renovation has been completed and put into use successfully. The scheme has many advantages, such as compact layout, small area, low investment, short construction period and little impact on production. According to estimates, only a 2650 cubic meter blast furnace can recover all dust and blast furnace gas at the same time every year, which can produce good social benefits and economic benefits of about 1.6 million yuan per year.
重点词汇
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股份公司joint-stock company; stock company; common-law corporation; company with share capital
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零排放zero release
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生产过程productive process
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技术和设备technology and equipment
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放散阀blow off valve
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尖啸声zing
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居民区residential quarters; residential area
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噪音污染noise pollution; sound pollution
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最先进most advanced
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停留在rest on