采用建模技术研究城市固体废物气化条件对 H 和 CO 产量的影响机制。
Study of the effect mechanism of municipal solid waste gasification conditions on the production of H and CO using modelling technique.
机构信息
School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, PR China.
出版信息
J Environ Manage. 2019 Jan 15;230:301-310. doi: 10.1016/j.jenvman.2018.09.097. Epub 2018 Oct 4.
The municipal solid waste (MSW) gasification process was numerically studied in the work. The effect mechanisms of particle size, temperature and gasification atmosphere on the production of H and CO were investigated in detail. The results demonstrated that the total volume fraction of H and CO dropped from 51.7% to 49.7% with particle size increasing from 20 < d < 30 mm to 80 < d < 100 mm under steam atmosphere. With the temperature increasing from 600 °C to 1000 °C, the total volume fraction of H and CO was raised from 56.1% to 65.8% under steam atmosphere. Five different gasifying agents: 100%CO, 21%O/79%N, 21%O/79%HO, 21%CO/79%HO, 21%O/79%CO were simulated, and the total volume fraction of H and CO was 51.87%, 19.1%, 56.13%, 48.36% and 42.98%, respectively. In the gasification conditions considered in this work, H + HO⇔OH + H (R84) played a key role in the yield of H, and the yield of CO was significantly affected by H + CO⇔OH + CO (R99) and H + CHCO⇔CH+CO (R81).
在这项工作中，对城市固体废物（MSW）气化过程进行了数值研究。详细研究了粒径、温度和气化气氛对 H 和 CO 生成的影响机制。结果表明，在水蒸气气氛下，粒径从 20<d<30mm 增加到 80<d<100mm 时，H 和 CO 的总体积分数从 51.7%下降到 49.7%。在水蒸气气氛下，温度从 600°C 升高到 1000°C 时，H 和 CO 的总体积分数从 56.1%上升到 65.8%。模拟了五种不同的气化剂：100%CO、21%O/79%N、21%O/79%HO、21%CO/79%HO、21%O/79%CO，H 和 CO 的总体积分数分别为 51.87%、19.1%、56.13%、48.36%和 42.98%。在这项工作中考虑的气化条件下，H+HO ⇔ OH+H (R84) 在 H 的生成中起着关键作用，而 CO 的生成则受到 H+CO ⇔ OH+CO (R99) 和 H+CHCO ⇔ CH+CO (R81) 的显著影响。
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