采用自制的煤大样量吸附实验装置,对常温常压条件下将电厂烟气注入采空区封存的可行性进行了探讨,对常压条件下煤对双组分N_2/CO_2气体的竞争吸附性进行了研究,并通过理论计算得出煤的结构单元—苯环与N_2、CO_2分子的相互作用能。常温...采用自制的煤大样量吸附实验装置,对常温常压条件下将电厂烟气注入采空区封存的可行性进行了探讨,对常压条件下煤对双组分N_2/CO_2气体的竞争吸附性进行了研究,并通过理论计算得出煤的结构单元—苯环与N_2、CO_2分子的相互作用能。常温常压下,单组分气体吸附实验得出煤对CO2的吸附量为0.5~1.1 cm^3/g,对N2的吸附量为0.03~0.25 cm^3/g,即煤对CO_2的吸附量远大于N_2的吸附量。煤对CO_2/N_2双组份气体竞争吸附实验得出,混合气体的存在促进了煤对2种气体的吸附,使吸附量均有所增加,即煤吸附电厂烟气的量远大于煤对N_2与CO_2的吸附量。通过理论计算,得出苯环与N2分子的相互作用能为-2.93 k J/mol,与CO_2分子的相互作用能为-26.50 k J/mol,由此可以得出煤吸附CO_2的能力强于吸附N2的能力。这与常压下煤吸附CO_2及N_2实验数据相吻合。展开更多
A new hydrometallurgical process for the refractory gold arsenosulfideconcentrates under normal temperature and pressure was presented. The experimental results of arefractory gold concentrate show that the total cons...A new hydrometallurgical process for the refractory gold arsenosulfideconcentrates under normal temperature and pressure was presented. The experimental results of arefractory gold concentrate show that the total consumption of NaOH in alkaline leaching is only 40%of those theoretically calculated under the conditions of full oxidization at the same oxidation ofarsenic to ar-senate and sulfur to sulfate. After alkaline leaching, cyanidation and adsorptionwere carried out for 24 h. The dissolution of gold by NaCN is increased to 95.3% from 12.8% beforepretreatment, and meanwhile 99.3% of the adsorption of gold by activated charcoal. The consumptionof NaCN for one ton ore is 10 kg, which is 1.2 times less than that before pretreatment. As it iscarried out under normal temperature and pressure, the investment of installations is alsodecreased.展开更多
文摘采用自制的煤大样量吸附实验装置,对常温常压条件下将电厂烟气注入采空区封存的可行性进行了探讨,对常压条件下煤对双组分N_2/CO_2气体的竞争吸附性进行了研究,并通过理论计算得出煤的结构单元—苯环与N_2、CO_2分子的相互作用能。常温常压下,单组分气体吸附实验得出煤对CO2的吸附量为0.5~1.1 cm^3/g,对N2的吸附量为0.03~0.25 cm^3/g,即煤对CO_2的吸附量远大于N_2的吸附量。煤对CO_2/N_2双组份气体竞争吸附实验得出,混合气体的存在促进了煤对2种气体的吸附,使吸附量均有所增加,即煤吸附电厂烟气的量远大于煤对N_2与CO_2的吸附量。通过理论计算,得出苯环与N2分子的相互作用能为-2.93 k J/mol,与CO_2分子的相互作用能为-26.50 k J/mol,由此可以得出煤吸附CO_2的能力强于吸附N2的能力。这与常压下煤吸附CO_2及N_2实验数据相吻合。
基金This project is jointly supported by the Creative Foundation of the National Northeast Research and Developing Base of High-Performance and New Materials of China (No.CX9906-3)the Natural Science Foundation of Liaoning Province of China (No.200110101
文摘A new hydrometallurgical process for the refractory gold arsenosulfideconcentrates under normal temperature and pressure was presented. The experimental results of arefractory gold concentrate show that the total consumption of NaOH in alkaline leaching is only 40%of those theoretically calculated under the conditions of full oxidization at the same oxidation ofarsenic to ar-senate and sulfur to sulfate. After alkaline leaching, cyanidation and adsorptionwere carried out for 24 h. The dissolution of gold by NaCN is increased to 95.3% from 12.8% beforepretreatment, and meanwhile 99.3% of the adsorption of gold by activated charcoal. The consumptionof NaCN for one ton ore is 10 kg, which is 1.2 times less than that before pretreatment. As it iscarried out under normal temperature and pressure, the investment of installations is alsodecreased.
