Storage, transportation and incineration characteristics of carbon-based skeleton-assisted thermally hydrolyzed sludge

CAI Wanzhen; XIAO Han; ZHANG Lin; LIU Huan; YAO Hong

doi:10.11949/0438-1157.20251377-

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Storage, transportation and incineration characteristics of carbon-based skeleton-assisted thermally hydrolyzed sludge

更新时间：2026-04-01

- Storage, transportation and incineration characteristics of carbon-based skeleton-assisted thermally hydrolyzed sludge
- CIESC Journal Pages: 1-15(2026)
- 作者机构：
  
  华中科技大学煤燃烧国家重点实验室，湖北武汉 430074
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20251377-
  CLC： TK 6
- Received：08 December 2025，
  
  Revised：2026-03-31，
  
  Online First：01 April 2026，
- 稿件说明：
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蔡宛臻, 肖涵, 张琳, 刘欢, 姚洪. 基于碳基骨架热水解污泥的储运焚烧特性研究[J]. 化工学报,

CAI Wanzhen, XIAO Han, ZHANG Lin, LIU Huan, YAO Hong. Storage, transportation and incineration characteristics of carbon-based skeleton-assisted thermally hydrolyzed sludge[J]. CIESC Journal,
蔡宛臻, 肖涵, 张琳, 刘欢, 姚洪. 基于碳基骨架热水解污泥的储运焚烧特性研究[J]. 化工学报, DOI： 10.11949/0438-1157.20251377-基于碳基骨架热水解污泥的储运焚烧特性研究-修改稿

CAI Wanzhen, XIAO Han, ZHANG Lin, LIU Huan, YAO Hong. Storage, transportation and incineration characteristics of carbon-based skeleton-assisted thermally hydrolyzed sludge[J]. CIESC Journal, DOI： 10.11949/0438-1157.20251377-基于碳基骨架热水解污泥的储运焚烧特性研究-修改稿

摘要

针对污泥衍生燃料储运以及燃烧安全性问题，本研究基于前期研发的碳基骨架辅助污泥热水解提质方法，重点考察了碳基骨架辅助热水解对污泥储运特性与焚烧特性的影响。在储运特性方面，尽管在同质量造粒条件下碳基骨架污泥的复吸水率会升高，但在同体积造粒条件下，其复吸水率可降低近30%；添加木质纤维素废弃物骨架可使吸氧量降低30%-70%，自燃倾向略有下降。在焚烧特性方面，不同类型碳基骨架对燃料性能的影响存在差异，其中废木屑类骨架表现最优，可使污泥热值提高25%，并将可燃性指数和稳燃性指数分别提高约8%和42%，有效改善了燃烧性能；该骨架材料还可将灰熔融温度中的软化温度（ST）提升约100 ℃，结渣倾向略有降低。加工副产品类骨架在多数燃烧指标上表现中等，虽能一定程度改善燃烧性能，但在改善结渣风险上的效果不如废木屑类骨架显著；而废秸秆类骨架由于引入过量的硅和钙，可能会带来结渣风险，应用中需严格把控其添加比例。本研究为污泥衍生燃料储运与焚烧特性的改善提供了理论支撑。

Abstract

To address the challenges associated with the storage

transportation

and combustion safety of sludge-derived fuel

this study investigated the effects of carbon-based skeleton-assisted thermal hydrolysis on the storage/transportation and incineration characteristics of sludge

based on a previously developed method. Regarding storage/transportation characteristics

although the water re-absorption rate of carbon-based skeleton sludge increased under equal-mass pelletizing conditions

it decreased by nearly 30% under equal-volume pelletizing conditions. The addition of lignocellulosic waste skeletons reduced oxygen absorption by 30-70%

indicating a slightly lower spontaneous ignition tendency. In terms of incineration characteristics

the influence of different carbon-based skeletons on fuel properties varied. Waste wood-based skeletons performed optimally

increasing the sludge calorific value by 25%

and enhancing the combustibility index and combustion stability index by approximately 8% and 42%

respectively

thereby effectively improving combustion performance. This skeleton material also raised the softening temperature (ST) in ash fusion temperatures by about 100 °C and slightly reduced slagging tendency. Processing by-product skeletons showed moderate performance in most combustion indicators

improving combustion performance to some extent but being less effective than waste wood skeletons in mitigating slagging risk. Conversely

waste straw skeletons

due to introducing excessive SiO₂

exacerbated ash fusion and slagging risks

necessitating strict control of their addition ratio in application. This study provides theoretical support for improving the storage

transportation

and incineration characteristics of sludge-derived fuel.

关键词

Keywords

references

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