Posted 28 Dec 2010 23:06
Converter to achieve a negative energy is a measure of a modern steel mill steel production technology, an important indicator of the level. Negative energy converter BOF steelmaking process mean that the total energy consumption is less than the total energy recovery, the converter steelmaking process energy consumption is less than zero. The energy consumption of BOF steelmaking process include: oxygen, nitrogen, argon, gas, electricity and steam, and energy recovery include: converter gas and steam. The traditional "negative energy steel-making technology" is defined as an engineering concept, reflecting the production of converter gas energy, comprehensive utilization of the technology integration of environmental protection. Converter steel-making negative energy to achieve the target, eight steel company set up a project research group to develop research goals, respectively, for converter gas cleaning and gas recovery system, the implementation of converter waste heat steam recovery system research. Increased by the first converter gas (steam) recovery, and stable recovery, a further increase per ton of steel converter gas (steam) recovery of the amount of work in two stages. Eight Steel 120t converter flue gas purification and gas recovery system is used in OG method. At 3 three-way converter switch valve and check valve seal between the fill pipe blowing nitrogen gas pipelines and additional switching valve bypass pipe tee. Detection of the mouth and the RD differential pressure throat, annular repair device into the converter be the master project, and revised its maintenance of technical standards in order to achieve accurate and throat RD (annular device) to operate the control and regulation. Cause for alarm because of the second lance put the *** to sort out the parameters and optimized to reduce the gas caused by the secondary recovery of the *** to mention the number of failures. 1 #, 2 # converter gas recovery Total 40,250,900 m3, reduce the cost of more than 1,200 yuan; converter, Block 2, 99.3% recovery rate of steam per ton of steel vapor recovery reached 60kg, achieve-13.17MJ / t, gas recovery rate of 90.27% per ton of steel gas recovery reached 70.36m3. . At the same time, realized the smelting produces gas - gas for thermal power generation - power plant to send oxygen to produce oxygen and nitrogen - oxygen and nitrogen and then used in smelting energy recycling, and achieve the purpose of reducing energy consumption of the converter process.