A custom-made high pressure and high temperature PVT setup for reactive phase behavior studies

用于反应相行为研究的定制高压高温 PVT 装置

• 批准号: RTI-2021-00030
• 负责人: Hassanzadeh, Hassan
• 金额: $ 9.2万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=718633
• 关键词: custom; made; pressure; temperature; PVT

Application of solvents have gained momentum for in-situ recovery of bitumen. Utilization of solvents has provided the oil sands industry with benefits such as reducing greenhouse gases emission, less energy consumption, and significant reduction of wastewater. Undeniably, the solvent application has assisted oil sands producers in Alberta to sustain their operation under recent low commodity prices and stringent environmental regulations. Phase behavior study of bitumen/water/solvent systems is a very complicated process and much more challenging than the light oils. Complexities arise due to the viscous nature of the mixtures, high asphaltenes content, interaction of water and asphaltenes at high temperatures, and reaction of aqueous solvents with naphthenic acids in bitumen. The phase behavior studies of bitumen/solvent systems conducted in the past have given little or no attention to reactive nature of this mixture. Bitumen consists of many complex molecules which react with the polar components in aqueous phase. Recently, we have observed that the asphaltenes and naphthenic acids interact with aqueous phase. The interaction generates in-situ surfactants and gases such as CO2, H2S, and H2 through aquathermolysis reactions and produces stable emulsions that may lead to misinterpretation of phase behavior data. Oil sands operators also reported high volume of acid-gas production and faced challenges in treatment of the produced emulsions that may have roots in the observed phenomena. Therefore, it is necessary to address the reactive nature of the mixtures in phase behavior measurements. This reactive nature prevents us in using our existing conventional experimental Pressure-Volume-Temperature (PVT) setups for conducting such experiments. The conventional PVT setups are designed for a non-reactive feed. In order to address this deficiency, a new custom-made experimental PVT setup has been proposed to enable us to study the reactive phase behavior of bitumen/water/solvent systems. The proposed new equipment will be the first reactive phase behavior experimental setup in the area of bitumen/water/solvent systems and enrich the research by 40 HQP at the University of Calgary. The most notable benefits of the proposed experimental setup are in providing knowledge and quality data to the oilsands industry to help them develop and implement new bitumen recovery technologies that consume less energy and water, generate a reduced amount of waste, and less GHG emission. These benefits are well-aligned with the Canada climate change mitigation strategy and will improve the international reputation of Canada in the environmental friendliness. Furthermore, the new experimental setup will put our team at the forefront of solvent-based and solvent-aided heavy oil and bitumen recovery research.

溶剂的应用已经获得了用于沥青的原位回收的势头。溶剂的利用为油砂工业提供了诸如减少温室气体排放、减少能源消耗和显著减少废水的益处。不可否认，溶剂应用帮助阿尔伯塔的油砂生产商在最近的低商品价格和严格的环境法规下维持运营。沥青/水/溶剂体系的相行为研究是一个非常复杂的过程，比轻质油更具挑战性。由于混合物的粘性、高沥青质含量、高温下水和沥青质的相互作用以及水性溶剂与沥青中的环烷酸的反应而产生复杂性。过去进行的沥青/溶剂体系的相行为研究很少或根本没有关注这种混合物的反应性质。沥青是由许多复杂的分子组成，它们在水相中与极性组分发生反应。最近，我们观察到沥青质和环烷酸与水相的相互作用。这种相互作用通过水热交换反应产生原位表面活性剂和气体，如CO2、H2S和H2，并产生稳定的乳液，这可能导致对相行为数据的误解。油砂运营商还报告了大量的酸性气体生产，并在处理所产生的乳液方面面临挑战，这些乳液可能源于所观察到的现象。因此，有必要在相行为测量中解决混合物的反应性质。这种反应性质阻止我们使用现有的常规实验压力-体积-温度（PVT）设置来进行这样的实验。传统的PVT设置是为无反应馈电而设计的。为了解决这一不足，一个新的定制的实验PVT装置已被提出，使我们能够研究沥青/水/溶剂系统的反应相行为。拟议的新设备将是沥青/水/溶剂系统领域的第一个反应相行为实验装置，并丰富了卡尔加里大学40 HQP的研究。拟议的实验装置最显着的好处是为油砂行业提供知识和质量数据，以帮助他们开发和实施新的沥青回收技术，这些技术消耗更少的能源和水，产生更少的废物，减少温室气体排放。这些好处与加拿大减缓气候变化战略完全一致，并将提高加拿大在环境友好方面的国际声誉。此外，新的实验装置将使我们的团队处于溶剂基和溶剂辅助重油和沥青回收研究的最前沿。