ABSTRACT

This paper presents the results of industrial research on co-combustion of solid recovered fuel (SRF) with hard coal in a stoker boiler type WR-25. The share of SRF in the fuel mixture was 10%. During the co-combustion of SRF, no technological disturbances of the boiler were noted. The obtained SO₂ and NO_X emissions were comparable with coal combustion, but dust emissions increased. During the co-combustion of the coal mixture with 10% of alternative fuel, acceptable standards for co-incineration of waste were exceeded for NOx, dust, CO, HCl, HF, heavy metals, dioxins, and furans. The by-products of waste co-combustion with coal were non-hazardous waste. The obtained results constitute a very important contribution to the process of boiler retrofitting toward a waste co-incineration unit, and to meeting the legislative and environmental requirements.

Implications: Due to some challenges related to waste storage and transportation, combustion in incineration plants and Waste-to-Energy plants is not possible. The adaptation (formal and technical) of medium scale boilers as co-incineration plants reveals high potential. Nevertheless, the lack of experience and investigations of waste co-combustion in real industrial scale grate boilers is observed. Thus, the implication of this article results consists of the investigations using industrial scale mechanical grate boiler (different from incineration type). Moreover, the investigations were carried out in a low-capacity boiler (~50% of nominal capacity). This novel experience is very important because reduced heat dissipation into the grid caused by high ambient temperatures occurs very frequently. These tests are valuable from the point of view of retrofitting the unit to obtain technological and emission parameters that would allow obtaining the status of a waste co-incinerating unit. The results of these investigations are addressed to power plant management board and engineering staff.

摘要

本文介绍了固体回收燃料 (SRF) 与硬煤在 WR-25 型加煤锅炉中混合燃烧的工业研究结果。SRF 在燃料混合物中的份额为 10%。在 SRF 的共燃过程中，没有注意到锅炉的技术干扰。得到的SO ₂和NO _X排放量与燃煤相当，但粉尘排放量增加。在混合煤与 10% 的替代燃料混合燃烧过程中，NOx、粉尘、CO、HCl、HF、重金属、二恶英和呋喃超过了可接受的废物混合焚烧标准。垃圾与煤共燃的副产品为无害垃圾。获得的结果对锅炉改造为废物联合焚烧装置的过程以及满足立法和环境要求做出了非常重要的贡献。

影响：由于与废物储存和运输相关的一些挑战，焚烧厂和废物转化能源厂是不可能的。中型锅炉作为联合焚烧厂的适应（正式和技术）显示出巨大的潜力。然而，观察到在实际工业规模的炉排锅炉中缺乏废物混合燃烧的经验和调查。因此，本文结果的含义包括使用工业规模机械炉排锅炉（不同于焚烧式）的调查。此外，调查是在低容量锅炉（标称容量的 50%）中进行的。这种新颖的体验非常重要，因为由高环境温度导致的散热减少到电网中的情况非常频繁。从改造装置以获得技术和排放参数的角度来看，这些测试是有价值的，这些参数将允许获得废物协同焚烧装置的状态。这些调查的结果提交给发电厂管理委员会和工程人员。