白酒酒糟与污水污泥共气化制氢反应特性及协同性分析

doi:10.19964/j.issn.1006-4990.2022-0255

Abstract

Abstract:

Experiments on the gasification of sewage sludge（SS） and spirit-based distillers′ grains（SDG） were conducted using a fixed bed as the reactor and water vapor as the gasification agent.The effects of blending ratio and reaction temperature on the gasification characteristics of SS and SDG were investigated，and the synergistic effects and synergistic mechanisms of SS and SDG co-gasification were analyzed.The results showed that SS had stronger gasification reaction activity than SDG，SDG had higher selectivity than SS syngas，and there were complementary effects in gasification.When SS and SDG were co-gasified，the H₂ content was gradually increased and CO content was gradually decreased as the proportion of SDG increasing in the blends.Increasing the temperature and increasing the proportion of SS could enhance the gasification reaction activity.When the temperature was 800 ℃ and m（SS）∶m（SDG）=1∶1，SS and SDG co-gasification had the maximum synergistic factor of 1.36.K and Ca in SS and SDG produced synergistic catalytic effect on the gasification reaction，and the catalytic mechanism was the K and Ca redox cycle.

Key words: sewage sludge, spirit-based distillers′ grains, co-gasification, hydrogen-rich syngas, synergy

CLC Number:

WANG Junliang, ZHAO Aiming, AO Xianquan, LI Songhong, CAO Yang. Characteristics and synergistic analysis of co-gasification of spirit-based distillers′grains with sewage sludge for hydrogen production[J]. Inorganic Chemicals Industry, 2023, 55(3): 118-125.

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反应温度/℃	SS合成气选择性/%	SDG合成气选择性/%
700	55.9	74.7
750	63.5	73.8
800	67.0	73.8
850	71.7	75.7
900	76.0	77.4

m（SS）∶ m（SDG）	反应性指数
m（SS）∶ m（SDG）	700 ℃	750 ℃	800 ℃	850 ℃	900 ℃
1∶0	0.013 8	0.016 6	0.017 9	0.026 2	0.023 7
3∶1	0.006 3	0.006 9	0.009 2	0.016 2	0.017 7
1∶1	0.004 9	0.005 6	0.007 4	0.011 7	0.014 6
1∶3	0.004 4	0.004 5	0.005 6	0.008 9	0.013 3
0∶1	0.003 2	0.003 4	0.004 0	0.007 8	0.011 1

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Characteristics and synergistic analysis of co-gasification of spirit-based distillers′grains with sewage sludge for hydrogen production

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