高温陶瓷净化生物质气化粗燃气粉尘试验研究

doi:10.16085/j.issn.1000-6613.2016-2374

化工进展 ›› 2017, Vol. 36 ›› Issue (08): 2903-2909.DOI: 10.16085/j.issn.1000-6613.2016-2374

高温陶瓷净化生物质气化粗燃气粉尘试验研究

谢建军, 郎林, 杨文申, 刘华财, 陈坚, 阴秀丽, 吴创之

中国科学院广州能源研究所, 中国科学院可再生能源重点实验室, 广东省新能源和可再生能源研究开发与应用重点实验室, 广东广州 510640

收稿日期:2016-12-21 修回日期:2017-02-17 出版日期:2017-08-05 发布日期:2017-08-05
通讯作者: 阴秀丽,研究员。
作者简介:谢建军(1976-),男,博士,副研究员,研究方向为固体燃料洁净利用。
基金资助:
国家自然科学基金（51661145022，51576200）及广东省科技计划（2014A010106017，2016A040403097）项目。

An experimental study of dust removal from biomass gasification gas at high temperature by ceramic filter

XIE Jianjun, LANG Lin, YANG Wenshen, LIU Huacai, CHEN Jian, YIN Xiuli, WU Chuangzhi

Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangdong Key Laboratory of New and Renewable Energy Research and Development, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, Guangdong, China

Received:2016-12-21 Revised:2017-02-17 Online:2017-08-05 Published:2017-08-05

摘要/Abstract

摘要： 生物质气化得到的粗燃气含有焦油和粉尘杂质，两者形成的混合物在净化装置的高温区易碳化结焦，在低温区容易凝结成团，因此常规的除尘技术并不适用。针对该问题，本文开发了粗燃气高温陶瓷除尘技术，并考察了生物质原料种类、补燃及反吹等工艺条件对除尘室压降和运行温度的影响。试验结果表明：与木片单独气化比较，采用25%成型颗粒燃料+75%木片（质量比）混合气化可导致除尘室阻力上升1200~1500Pa；高温除尘室最佳操作温度为450~550℃，补燃较反吹是降低除尘室压降更有效的手段，当燃气处理量为260~400m³/h时，补燃空气的最佳流量为10~12m³/h，此条件下可使除尘室压降稳定在1200Pa左右。陶瓷管燃气除尘设备可实现100h连续稳定运行，除尘器出口粉尘浓度为10~40mg/m³，粉尘脱除率92.3%~99.8%，焦油脱除率为31.0%~92.5%，且补燃除尘后可燃气体组分浓度基本保持不变。

关键词: 生物质, 气化, 过滤, 粉尘, 焦油

Abstract: Hot gas filtration with raw syngas was continuously tested for 100 hours on a pilot scale purification system,the influence of biomass type,after-burning and back blow on pressure drops and temperatures of dust filter were studied,and the concentrations of gas component,tar and dust in the raw syngas and purified syngas were analyzed. It was found that compared with filtration with syngas from wood chip gasification,the pressure drop of the filter increased by 1200-1500Pa while filtration with syngas from co-gasification of pellet(25%mass)and wood chip(75%)the optimal temperature of filter was 450-550℃;after-burning with air was a more effective way to decrease the filter pressure drop than back blowing with N₂. The optimal flow rate of after-burning air was 10-12m³/h when the flow of syngas was 260-400m³/h;and the filter pressure drop remained at around 1200Pa. It was concluded that the pilot filtration system could continuously and stably run for 100 hours. The dust content in purified syngas was as low as 10-40mg/m³. The dust and tar removal efficiency was 92.3% to 99.8% and 31.0% to 92.5%,respectively. The filtration did not reduce the concentration of combustiblegases in purified syngas significantly.

Key words: biomass, gasification, filtration, dust, tar

中图分类号:

谢建军, 郎林, 杨文申, 刘华财, 陈坚, 阴秀丽, 吴创之. 高温陶瓷净化生物质气化粗燃气粉尘试验研究[J]. 化工进展, 2017, 36(08): 2903-2909.

XIE Jianjun, LANG Lin, YANG Wenshen, LIU Huacai, CHEN Jian, YIN Xiuli, WU Chuangzhi. An experimental study of dust removal from biomass gasification gas at high temperature by ceramic filter[J]. Chemical Industry and Engineering Progress, 2017, 36(08): 2903-2909.

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高温陶瓷净化生物质气化粗燃气粉尘试验研究

An experimental study of dust removal from biomass gasification gas at high temperature by ceramic filter

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