华电技术 ›› 2018, Vol. 40 ›› Issue (2): 68-70.

• 节能与环保 • 上一篇    下一篇

燃煤机组脱硫超低排放改造中燃煤硫分的选择

  

  1. 华电电力科学研究院,杭州〓310030
  • 出版日期:2018-02-25 发布日期:2018-03-28

The selection about the sulfur content in the coal of ultralow emission desulfurization transformation in coalfired units

  1. China Huadian Electric Research Institute, Hangzhou 310030, China
  • Online:2018-02-25 Published:2018-03-28

摘要:

燃煤硫分是脱硫超低排放改造重要影响因素之一,高硫煤价格相对较低,但改造初投资以及运行成本较高,选择适宜硫分的煤质对电厂经营具有重要意义。以西南某300MW燃煤机组石灰石-石膏湿法脱硫改造工程为例,在燃煤收到基硫分分别为3.85%,2.43%,1.06%(对应入厂标煤价格分别为797,812,861元/t)的情况下,对脱硫超低排放改造方案进行投资估算。以燃煤收到基硫分为1.06%的改造方案为基准,采用年费用法模型计算燃煤收到基硫分为3.85%,2.43%时投资回收期分别为2.7,3.5a,并根据电厂经营状况给出建议,可为燃煤电厂脱硫超低排放改造时燃煤硫分的选择提供参考。

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Abstract:

Sulfur content of coal was one of important factors that would affect the ultralow emission desulfurization transformation. Highsulphur coal is of low cost but high cost of initial investment and operating. Choosing appropriate sulfur content of coal is of great significance for the power plant operation. Taking the limestonegypsum wet desulphurization transformation project on a 300MW coalfired units in southwest as an example, it estimates the investments in the ultralow emission desulfurization transformation schemes based on the different condition of asreceived sulfur content in coal which are 3.85%, 2.43% and 1.06% (the corresponding factory price are 797,812,and 861yuan/ton). Taking the coal whose sulfur content is 1.06% as transformation scheme benchmark, taking annual cost method model,the investment payback period was 2.7 years and 3.5 years respectively when the asreceived sulfur content in coal are 3.85% and 2.43%. It offers advice according to the power plant operating conditions, and provides the reference for the sulfur content selection for ultralow emission desulfurization transformation in coalfired units.

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