Product mix changes

The reactor operates either at low (200-240°C) or high (300-350°C) temperatures and between 1-4 MPa. The product mix changes from longer to shorter chain length molecules as the temperature increases. The product stream from a Fischer-Tropsch reactor is a mix of many components but by selecting the right operating conditions the mix can be adjusted so that the product stream has mostly diesel fuel properties. 

Product mix changes are required over an operational time frame that, in this case, is daily. The element of flexibility is mobility. So, any product mix can be made each day, with the supply chain moving quickly to produce one product to another. A sandwich shop exemplifies this type of flexibility in a short timeframe, with any sandwich on the menu being assembled to order in minutes. 

Causes of Variability in Waste Characteri tion changes ia production rate variations ia plant product mix batch operations... 

Quantum yields for the formation of symmetrical and unsymmetrical (mixed) products were determined as a function of solvent viscosity. If perchance expulsion of CO were concerted, yielding two benzyl radicals, formation of mixed combination products may reflect the ability of the radicals to escape from the solvent cage. If this were true, variation of the solvent viscosity should alter the rate of escape of these radicals and the ratio of symmetrical to unsymmetrical products should change. The results found in this study are presented in Table 4.6. The data in Table 4.6 indicate that the reaction is... 

What impacts do price changes of primary energy sources have on the hydrogen production mix and related supply costs ... 

There were good intentions when a small chemical terminal in Savannah, Georgia, that supplied the paper and pulp industry decided to change their product mix. Their terminal was to be converted from handling all nonflammable chemicals to storing large quantities of flammable crude sulfate turpentine (CST). Crude sulfate turpentine is an impure form of turpentine produced as a byproduct of the Kraft pulping process. It is classified as a Class IC flammable liquid. 

Changes in technology and in the availability of optimum feedstocks have far-reaching effects on the entire product mix. For example, when the availability of LPG and ethane for ethylene manufacture has decreased, n-butane and the higher crude cuts have been used, and the proportion of by-product butadiene has increased. 

Diisocyanates (MDI). The first step in the production of MDI (and polymeric PMDI ) is the condensation of aniline and formaldehyde to form diphenylmethylenediamine. The reaction conditions can be varied to change the isomer distribution of the product. This is followed by phosgenation to give an aromatic isocyanate product mix that corresponds to... 

In recent years, the competition for the food dollar has increased, forcing conventional food stores to rethink their pricing and product mix. Discount mass merchandise stores, warehouse stores and supercenters have managed to get a larger market share because of their lower prices. In an effort to draw consumers away from specialized stores, like butcher shops or natural foods stores, some supermarkets have included a full service meat counter with butchers on call and a natural foods section for those who prefer those foods, among other changes. 

Ozone reactions are not very fast (k lO ) and do not change the rate or product mix of lipid autoxidation once established (189). Nevertheless, ozone markedly shortens induction periods by contributing to early accumulation of the critical concentration of hpid radicals and hydroperoxides necessary to trigger the onset of rapid oxidation. Ozone also reacts with LOOH to produce radicals that propagate the oxidation chain ... 

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