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Development and Application of an Object-Oriented Simulation Tool for Kraft Recovery Processes

机译：牛皮纸回收过程的面向对象仿真工具的开发与应用

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摘要

A new software simulation tool for kraft recovery processes is presented, developed using IPSEpro, a commercial-grade, object-oriented modeling framework developed originally for power plant modeling. Using IPSEpro's flexible structure and easy-to-use development environment, users can rapidly extend IPSEpro libraries to support new and existing technologies, and commercial-grade libraries are available for many conventional and advanced energy and chemical conversion technologies. One such library is EPP_Lib, used for detailed design and off-design analysis of power plants, including combined-cycles, cogeneration systems, and steam cycles. With EPP_Lib, IPSEpro can design and analyze power plants at a level of scope and detail comparable with power plant software such as GateCycle and GTPro. Working with a leading pulp-and-paper company, Enginomix has extended EPP_Lib to support the modeling of kraft recovery processes, including brown stock wash processes, evaporator/concentrator trains, and kraft recovery boilers. Utilizing IPSEpro's object-oriented data structures, new streams and property routines were developed for solid, liquid, gaseous and mixed-phased streams to represent black, green and white liquors, smelt, solid streams, and recovery boiler exhaust (gas with entrained solids). New icons were developed for key kraft recovery equipment, including recovery boilers, evaporators and concentrators, flash tanks, brown stock washers, pumps and heaters, ash mix tanks, and others. By utilizing existing EPP_Lib icons for conventional steam plants with these new library extensions, users can now build kraft recovery process models incorporating detailed industry-standard calculations for both the kraft recovery and steam cycle processes. Sample IPSEpro models of various kraft recovery processes and configurations were developed and are presented. In the future, the EPP_P_Lib model library will be extended to support the modeling of recausticizing processes. In the next phase of the present work, a detailed representative model of the kraft recovery process will be developed for an operating U.S. pulp and paper facility, and the calculated model results will be compared with measured plant data; the comparison between the model results and measured plant data will be presented and discussed in a future paper.
机译：介绍了使用IPSEpro开发的用于牛皮纸回收过程的新软件仿真工具，IPSEpro是最初为电厂建模而开发的商业级，面向对象的建模框架。使用IPSEpro的灵活结构和易于使用的开发环境，用户可以快速扩展IPSEpro库以支持新技术和现有技术，并且商业级库可用于许多常规和高级的能源和化学转化技术。其中一个库就是EPP_Lib，它用于发电厂的详细设计和非设计分析，包括联合循环，热电联产系统和蒸汽循环。借助EPP_Lib，IPSEpro可以在一定范围和详细程度上设计和分析发电厂，与Gategatee和GTPro等发电厂软件相当。 Enginomix与一家领先的纸浆和造纸公司合作，扩展了EPP_Lib以支持牛皮纸回收过程的建模，包括棕色浆液洗涤过程，蒸发器/浓缩器机组以及牛皮纸回收锅炉。利用IPSEpro的面向对象的数据结构，为固态，液态，气态和混合相的流开发了新的流和属性例程，以表示黑液，绿液和白液，熔体，固体流和回收锅炉废气（夹带固体的气体） 。为主要的牛皮纸回收设备开发了新的图标，包括回收锅炉，蒸发器和浓缩器，闪蒸罐，棕浆清洗机，泵和加热器，灰渣混合罐等。通过将现有的EPP_Lib图标用于具有这些新库扩展功能的常规蒸汽工厂，用户现在可以构建牛皮纸回收过程模型，其中包括针对牛皮纸回收和蒸汽循环过程的详细行业标准计算。开发并介绍了各种牛皮纸回收工艺和配置的IPSEpro模型样本。将来，将扩展EPP_P_Lib模型库以支持重新加密过程的建模。在本工作的下一阶段，将为美国一家运行中的纸浆和造纸设施开发一个详细的代表性牛皮纸回收过程模型，并将计算出的模型结果与测得的工厂数据进行比较；模型结果与实测工厂数据之间的比较将在以后的论文中进行介绍和讨论。

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