在分析正宁煤煤质特性的基础上,考察了添加剂用量、粒度级配等对其制备水煤浆的影响。试验结果表明:当添加剂用量为0.8%,细煤粉比例为60%-70%时,所制备的水煤浆的质量分数为64.3%,此时水煤浆粘度为1 000 m Pa·s,符合工业水煤浆制...在分析正宁煤煤质特性的基础上,考察了添加剂用量、粒度级配等对其制备水煤浆的影响。试验结果表明:当添加剂用量为0.8%,细煤粉比例为60%-70%时,所制备的水煤浆的质量分数为64.3%,此时水煤浆粘度为1 000 m Pa·s,符合工业水煤浆制备标准。配煤试验表明,该煤与环县煤的配比为3∶7时,所制煤浆的质量分数达到68%,较正宁煤单独制浆提高了近4个百分点,所制备的水煤浆72 h的析水率为10.2%。展开更多
The wastes and the by-products of food industrial technologies are suitable for bioenergy generating because of the high organic matter content. Anaerobic digestion is the eldest technology for waste stabilization and...The wastes and the by-products of food industrial technologies are suitable for bioenergy generating because of the high organic matter content. Anaerobic digestion is the eldest technology for waste stabilization and however by controlled decomposition a high value and marketable energy source can be produced. Whey is normally used as a component of dairy products or as an additive for food product. In our work we focused on another utilization method: biogas generating from membrane separated fractions i.e.: permeate and concentrate of whey. The effect of the pH, thermal, microwave pre-treatment and their combinations on the biogas yield were investigated. Our results showed that the applied pre-treatments had significant effect on biogas production. In consequence of the hydrolysis of large molecules the biodegradability of the pre-treated whey fractions was enhanced, therefore the biogas and methane production yield increased significantly.展开更多
文摘在分析正宁煤煤质特性的基础上,考察了添加剂用量、粒度级配等对其制备水煤浆的影响。试验结果表明:当添加剂用量为0.8%,细煤粉比例为60%-70%时,所制备的水煤浆的质量分数为64.3%,此时水煤浆粘度为1 000 m Pa·s,符合工业水煤浆制备标准。配煤试验表明,该煤与环县煤的配比为3∶7时,所制煤浆的质量分数达到68%,较正宁煤单独制浆提高了近4个百分点,所制备的水煤浆72 h的析水率为10.2%。
文摘The wastes and the by-products of food industrial technologies are suitable for bioenergy generating because of the high organic matter content. Anaerobic digestion is the eldest technology for waste stabilization and however by controlled decomposition a high value and marketable energy source can be produced. Whey is normally used as a component of dairy products or as an additive for food product. In our work we focused on another utilization method: biogas generating from membrane separated fractions i.e.: permeate and concentrate of whey. The effect of the pH, thermal, microwave pre-treatment and their combinations on the biogas yield were investigated. Our results showed that the applied pre-treatments had significant effect on biogas production. In consequence of the hydrolysis of large molecules the biodegradability of the pre-treated whey fractions was enhanced, therefore the biogas and methane production yield increased significantly.