Experimental study on non-catalytic continuous thermal reforming process of coke oven raw gas

ZHANG Jian; LIAN Fan; CHEN Dongliang; LIANG Wancai; YANG Jingxuan; ZHANG Zhonglin; HAO Xiaogang

doi:10.12434/j.issn.2097-2547.20230075

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Experimental study on non-catalytic continuous thermal reforming process of coke oven raw gas

- Experimental study on non-catalytic continuous thermal reforming process of coke oven raw gas
- Vol. 48, Issue 5, Pages: 182-188(2023)
- 作者机构：
  
  1.上海电气集团国控环球工程有限公司，山西太原 030001
  2.山西潞安煤基合成油有限公司，山西长治 046000
  3.太原理工大学化学工程与技术学院，山西太原 030024
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20230075
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ZHANG Jian, LIAN Fan, CHEN Dongliang, et al. Experimental study on non-catalytic continuous thermal reforming process of coke oven raw gas. [J]. Low-carbon Chemistry and Chemical Engineering 48(5):182-188(2023)
DOI：

ZHANG Jian, LIAN Fan, CHEN Dongliang, et al. Experimental study on non-catalytic continuous thermal reforming process of coke oven raw gas. [J]. Low-carbon Chemistry and Chemical Engineering 48(5):182-188(2023) DOI： 10.12434/j.issn.2097-2547.20230075.

摘要

以西山焦煤为实验原料，采用实验室规模的两段式煤焦化和干馏气连续热重整实验装置，研究了高温条件下的干馏气连续热重整转化行为，重点考察了氧气（O,2,）流量变化对重整后粗煤气中有效组分及其产率的影响；同时对反应条件进行优化，提出了随干馏温度变化的分段进氧方式（温度分别为低于400 °C、400~700 °C、700~900 °C、高于900 °C时，O,2,流量分别为100 mL/min、125 mL/mim、100 mL/min、50 mL/min）。结果表明，分段进氧热重整条件下，实现了重整中O,2,供给的精准控制，避免了有效气（CO + H,2,）的过氧化反应和积炭的生成；在降低重整O,2,消耗的同时，有效气产量从51.24 L增至98.42 L，增加了92%，极大地提升了热重整效率。以500 × 10,4, t规模焦化改造项目为例，应用非催化连续热重整对焦炉荒煤气进行提质，新增效益最高可达1362 × 10,4, CNY/a。

Abstract

Using Xishan coking coal as the experimental material, a two-stage coal coking and dry distillation gas continuous thermal reforming experimental apparatus at a laboratory scale was employed to investigate the transformation behavior of dry distillation gas under high-temperature conditions. The primary focus was on the impact of varying oxygen (O,2,) flow rates on the composition and yield of effective components in the reformed crude gas. Simultaneously, the reaction conditions were optimized, proposing a staged oxygen feeding mode corresponding to changes in dry distillation temperature (The temperatures are below 400 ℃, between 400 ℃ and 700 ℃, between 700 ℃ and 900 ℃, and above 900 ℃, with O,2, flow rates of 100 mL/min, 125 mL/min, 100 mL/min, and 50 mL/min, respectively). The results demonstrate that under staged oxygen feeding in thermal reforming, precise control of O,2, supply during the reforming process is achieved, preventing the overoxidation reaction of effective gas (CO + H,2,) and carbon deposition. While reducing the consumption of O,2, in thermal reforming, the yield of effective gas increases from 51.24 L to 98.42 L, representing a 92% increase in efficiency. Using a 500 × 10,4, t coke oven modification project as an example, the application of non-catalytic continuous thermal reforming for upgrading coke oven raw gas can yield additional benefits of up to 1362 × 10,4, CNY/a.

关键词

焦炉荒煤气非催化连续热重整实验研究工艺验证

Keywords

coke oven raw gasnon-catalyticcontinuous thermal reformingexperimental researchprocess verification

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