Co‐Combustion of Oil Sludge Char and Brown Coal in a Continuous Fluidized‐Bed Combustor. Issue 1 (22nd December 2022)

• Record Type: Journal Article
• Authors: Shi, Bowen; Qiao, Fa; Zhang, Guangyi; Liu, Xuan; Zhang, Yuming; Wen, Hongyan; Wang, Fang; Zhang, Jianling; Xu, Guangwen
• Other Names: Heinrich Stefan guestEditor.
• Is Part Of: Chemie Ingenieur Technik. Volume 95:Issue 1/2(2023)
• Page Start: 77
• Page End: 88
• Publication Date: 2022-12-22
• Subjects: Air‐staging combustion -- Brown coal -- Fluidized bed -- Nitrogen oxides -- Oil sludge char; Chemical engineering -- Patents -- Periodicals; Chemical engineering -- Periodicals; Chemical industry -- Periodicals; Chemistry, Technical -- Periodicals; 660.05
• DOI: 10.1002/cite.202200142
• Languages: English
• ISSNs: 0009-286X

Abstract

Abstract: For developing technologies for innocent disposal of/energy recovery from high‐ash oil sludge char (OSC), it was continuously combusted in a 10 kg h −1 fluidized‐bed combustor. Addition of brown coal (BC) improved its combustion, but excessive BC was prone to cause slagging. Fine coke particles in OSC and volatiles in BC led to staged temperatures along the fluidized bed through air‐staging co‐combustion, enabling excellent combustion performance as well as efficient NOx reduction, especially when coupled with selective non‐catalytic reduction. Thus, there is a potential to cleanly recover energy from OSC by its co‐combustion with BC. Abstract : Co‐combustion of oil sludge char (OSC) with brown coal (BC) was investigated in a continuous fluidized‐bed combustor. Addition of 10 wt % BC facilitated the combustion of OSC and achieved the expected reduction of NOx emission when air‐staging and selective non‐catalytic reduction were imposed into the freeboard. This exhibited the potential for clean energy recovery from OSC by its co‐combustion with low‐rank fuels rich in volatiles.