Investigation of the reaction process unter engine-like conditions

研究类发动机条件下的反应过程

• 批准号: 239927125
• 负责人: Dr.-Ing. Robert Schießl
• 金额: --
• 依托单位: Institut für Technische Thermodynamik (ITT)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/239927125?language=en
• 关键词: Investigation; reaction; process; unter; engine

The global goal of the project MM1 is the development and optimization of processes for polygeneration, ie processes that can have several beneficial aspects. These include e.g. the reciprocal, controllable conversion of mechanical into chemical energy or the presentation of chemically valuable substances. A prototype of a machine that can perform such processes is a piston-cylinder device that can be used as an internal combustion engine (in which chemical energy is converted into mechanical energy) or as a mechanically driven chemical reactor (mechanical energy in chemical energy). The knowledge about these processes is to be improved by investigations on a Rapid Compression Machine (RCM), which represents an experimentally well-accessible version of such a piston-cylinder device.The results achieved in the current project phase have shown potential for a further improvement of polygeneration processes (with regard to the yield of useful quantities, such as substance turnover).In particular, from the work of the current period, the following concrete goals result.In many of the investigated processes (mainly dry reforming of CO2, production of C2H2 from CH4), a further increase of the material yield would be physically possible. However, this could not be realized experimentally or technically, or only with great additional effort, partly because of kinetic obstacles. This applies v.a. For very fuel-rich mixtures that have proven to be promising, but where the initiation of the reaction with the previous measures have already exhausted the achievable in the RCM areas of initial conditions (temperature, compression ratio). Above all, the production of high compression temperatures required the addition of high proportions (up to 95 percent by mole) of noble gases with their low heat capacity. Such measures are usually rather unfavourable for practical applications.The goal is therefore to initiate chemical reactions even in such inert mixtures under conditions that are feasible in RCM (and similar compaction machines) (compression ratios, initial temperatures and pressures).

MM1项目的全球目标是开发和优化多联产工艺，即具有几个有益方面的工艺。这些包括，例如，将机械转化为化学能的相互、可控的转化，或呈现具有化学价值的物质。能够进行这种过程的机器的原型是活塞-气缸装置，它可以用作内燃机(其中化学能被转化为机械能)或用作机械驱动的化学反应器(机械能转化为化学能)。关于这些过程的知识将通过对快速压缩机(RCM)的研究而得到改善，快速压缩机代表了这种活塞-气缸装置的实验易用性。本项目阶段所取得的结果显示了进一步改进多产工艺的潜力(就有用量的产量而言，例如物质的周转)。特别是从当前时期的工作中，得出以下具体目标。在许多所研究的工艺中(主要是二氧化碳的干法重整，从CH4生产C2H2)，物质产率的进一步提高在物理上是可能的。然而，这不可能在实验上或技术上实现，或者只需付出巨大的额外努力，部分原因是动力学障碍。这适用于V.A.对于燃料非常丰富的混合物，已被证明是有希望的，但与先前措施的反应的启动已经耗尽了在RCM初始条件(温度、压缩比)方面可以实现的目标。最重要的是，生产高压缩温度需要添加高比例(高达95%摩尔)的低热容惰性气体。这种措施通常不利于实际应用。因此，目标是即使在这种惰性混合物中，也要在RCM(和类似的压实机)可行的条件下(压缩比、初始温度和压力)启动化学反应。