Application of low temperature waste heat recovery device in smelting flue gas acid production
The process flow,key process indicators control,key equipment selection,and operation of the low-temperature heat recovery system in the 700 kt/a smelting flue gas acid plant of Heilongjiang Zijin Copper Co.,Ltd.are introduced.The low-temperature heat recovery system is designed and constructed by Anhui Shengte Environmental Technology Co.,Ltd.and successfully tested in one attempt.It produced 0.8 MPa low-pressure steam of 40 t/h.The heat recovered from heating desalinated water and deoxygenated water is converted into steam production,resulting in a steam production of 0.55 t per ton of acid,which is better than the evaluation indicators for clean production in the sulphuric acid industry.After the low-temperature heat recovery system is put into use,all indicators have basically reached or even exceeded the design values,and can generate about 23.28 million yuan of economic benefits annually.Production practice has proven that domestically produced low-temperature heat recovery technology is worth promoting in smelting flue gas acid plants.
smelting flue gassulphuric acid plantlow-temperature heat recoverylocalized production
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