HYDROGEN-RICH SYNGAS PRODUCTION BY CO-PYROLYSIS OF WHEAT STALK AND WET SEWAGE SLUDGE WITH DIFFERENT MOISTURE CONTENT
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摘要: 为拓展活性污泥资源化利用方向,在固定床反应器中研究了不同含水率污泥与小麦秸秆的共热解。将不同含水率的污泥和秸秆在600~900 ℃范围内混合热解,研究了热解温度、污泥含水率和秸秆添加量对气体组成的影响。当污泥含水率一定时,随着反应器温度的升高,H2和CO的含量逐渐增加。在相同温度下,随着污泥含水率的增加,H2的含量呈现先增加后减少的趋势,而CO含量呈逐渐下降趋势。当污泥含水率为60%时,H2的含量达到最大值。当热解温度为800 ℃时,制备富氢合成气的最佳比例为40%的秸秆与含水率为60%的污泥混合热解。Abstract: In order to expand the utilization of activated sludge, the co-pyrolysis of sludge and wheat straw with different moisture content was studied in a fixed bed reactor. Sludge and straw with different moisture content were mixed and pyrolysis in the range of 600~900 ℃. The effects of pyrolysis temperature, sludge moisture content and straw addition amount on gas composition were studied. When the sludge moisture content was constant, the content of H2 and CO gradually increased with the increase of reactor temperature. At the same temperature, as the moisture content of sludge increased, the content of H2 increased first and then decreased, while the content of CO decreased gradually. When the moisture content of sludge was 60%, the content of H2 reached the maximum value. When the pyrolysis temperature was 800 ℃, 40% straw and sludge with moisture content of 60% was the best proportion to prepare hydrogen-rich syngas.
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Key words:
- sludge /
- wheat stalk /
- co-pyrolysis /
- moisture content /
- temperature
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