Process design requirements

We could go through that same kind of problem analysis for many different structures, and, in the process, design requirements could be expressed for each of them. The most common (Jesign requirements would be expressed in some manner in terms of strength, stiffness, and life, but there are many other issues as well. Whether the material will corrode, for example. Whether it will provide the proper insulation or just the opposite, sufficient conductivity, and so on. There are many, many different types of tasks that we ask a structure to perform. 

In SILP carbonylation we have introduced a new methanol carbonylation SILP Monsanto catalyst, which is different from present catalytic alcohol carbonylation technologies, by using an ionic liquid as reaction medium and by offering an efficient use of the dispersed ionic liquid-based rhodium-iodide complex catalyst phase. In perspective the introduced fixed-bed SILP carbonylation process design requires a smaller reactor size than existing technology in order to obtain the same productivity, which makes the SILP carbonylation concept potentially interesting for technical applications. 

The selection of an exchanger for low-temperature operation is normally determined by process design require-... 

Adjusted hours are the home office hours that would be required by a large engineering contractor to perform a specific scope of work for a plant with normal sized equipment. They are derived from the base hours, adjusted to take into consideration the specific situation e.g., extent of process design required, type of process and instrumentation, special site conditions, extra retrofit work, existing facilities. Owner s participation, etc. 

Often the process design requirements for applications of ion exchange prescribe more rigorous particle size constraints which are met by either further sieving operations, or as is recently the case with some principal resin manufacturers, the ability to produce directly a uniformly sized product ( 50 /xm) at the resin copolymerization... 

Downstream process design requires distillate and bottoms data. Calculate the flow rates and compositions of these streams for a fixed feed rate of 1000 kmol/h. 

Pipes and valves Leak detection and repair programs for fugitive emissions Leakless components Process designs requiring the minimum number of valves and other components... 

Liquefaction process design requires the choice of a combination of temperature and pressure at which chlorine can be economically condensed. There is a tradeoff... 

Brine Saturation and Primary Treatment. While other brine systems are being commissioned, batches of primary treatment chemicals can be prepared in accordance with process design requirements and operating instructions. Addition of salt to the dissolver can then start, and brine production begins. Addition of treatment chemicals... 

Modify process design requirements such that cheaper standard equipment or vessel designs can be utilized. 

Computer-aided automation of process design requires a whole new approach to part manufacture and assembly planning. This centres on the decision logics, formulae, algorithms and data extractions. This approach is labelled as the Generative Method [4]. Examples of such procedures are Decision Trees, Decision Tables, Axiomatic and Expert systems. Regardless of their approach they remain complex in nature and this led to the specific applications, such as those in sheet metal fabrications and electronics manufacture, where parameters are more... 

Network design. A network of supply chain units meeting product and process design requirements is established. Problems to be addressed concern location and role of supply chain units, allocation of products, strategic-level capacity planning, and establishing transportation and information exchange links. 

The cost of carbon vs stainless makes carbon steel fabrication worth looking into. It is not a choice for universal application, but for some applications it works well. Under no circumstances would one use carbon steel to fabricate the clean solvent storage tank where there is some air, unless the process design required purging with nitrogen prior to solvent entry. The cost difference between stainless and carbon steel... 

Xie and Subramaniam investigated theoretical options for a rhodium-based process for octenes. Their goal was a process that, when compared to cobalt-based processes, would be particularly efficient in terms of reaction technology and catalyst recycling [16]. Another process design requirement was a significantly lower investment cost than that of conventional cobalt-based processes. 

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