Innovation of pilot OTSG skid design and construction to simulate field conditions for corrosion and erosion

南艾伯塔省理工学院(SAIT)和加拿大油砂创新联盟(COSIA)正在合作，通过对部分工艺进行新颖的设计和施工配置，创新试点实验室规模的直通式蒸汽发生器(OTSG)。这种新的设计要求改善蒸汽质量，提高能源效率，减少对环境的影响。OTSG将劣质、非饮用水的锅炉给水(BFW)转化为现场资源回收所需的高质量蒸汽。BFW中溶解的有机和无机杂质以及残留的有机金属物种浓度升高，导致结垢和结垢。这会导致OTSG管的腐蚀和冲蚀，导致其过早失效。这一新的应用研究项目的目标是在SAIT的先导试验台上协助开发、建造、操作和测试一种新型的混合原型金属测试片和加热器。这一新的研究项目将通过设计和建造两个新的和重要的夹杂物：(I)金属测试片和(Ii)具有优越热交换能力的加热器，以混合试点滑板和模拟现场OTSG条件下的侵蚀和腐蚀。这一创新将需要进行系统的调查，以确定结垢和污垢的成分及其在延缓传热方面的效果，以及促使它们滞留在沉积物下金属表面的侵蚀和腐蚀机制。

The Southern Alberta Institute of Technology (SAIT) and Canada's Oil Sands Innovation Alliance (COSIA) are collaborating to innovate pilot lab-scale once-through steam generators (OTSGs) through a novel design and construction configuration of part of the process. This new design is required to improve steam quality, increase energy efficiency and reduce environmental impacts. OTSGs convert boiler feed water (BFW) of poor quality, non-potable water to high-quality steam required for in-situ resource recovery. The elevated concentrations of dissolved organic and inorganic impurities and residual organo-metallic species present in the BFW cause scaling and fouling. This causes corrosion and erosion in the OTSG tubes, leading to their premature failure. The objective of this new applied research project is to assist the development, construction, operation and testing of a novel hybridized prototype metal test coupon and heater on the pilot test rigs at SAIT. This new research project will focus on two novel and important inclusions through the design and construction of: (i) metal test coupons and (ii) a heater with superior heat exchange capacity to hybridize the pilot skids and simulate the field OTSG conditions for erosion and corrosion. This innovation will entail a systematic investigation to determine the composition and the effect of scale and fouling in retarding heat transfer and the erosion and corrosion mechanisms that foster their residence on the surface of the metals under the deposits.