Recycling basic concepts

The differential reactor is the second from the left. To the right, various ways are shown to prepare feed for the differential reactor. These feeding methods finally lead to the recycle reactor concept. A basic misunderstanding about the differential reactor is widespread. This is the belief that a differential reactor is a short reactor fed with various large quantities of feed to generate various small conversions. In reality, such a system is a short integral reactor used to extrapolate to initial rates. This method is similar to that used in batch reactor experiments to estimate... 

This paper focuses on feedstock recycling of PVC, which involves degradation in a full-scale incineration plant. Liberated hydrochloric acid is recovered and used in subsequent stages for the generation of new PVC. Full details are given on the basic concept, plant configuration, the process itself, and the economic aspects involved. 

The basic concept of a thermal process using pyrolysis and combustion stages coupled by heat pipes is workable and eliminates the need to recycle large amounts of sand. 

Alternative Approaches / 5.62 Basic Concepts of the Capacity-Based Method / 5.6.3 Reactor-Column-Recycle Example... 

To provide a framework for clean manufacturing methods, this section will define important basic concepts. Interestingly, many of the concepts, such as recycling, are defined differently by government, societal, industrial, and academic entities (Allen and Rosselot 1997). Other terms are used interchangeably for example, pollution prevention is often defined as source reduction. 

As shown in Figure 8, the optimised concept for recycling hazardous components in a glass matrix involves layered and graded microstructures. The basic concept (Fig 8-a) consists of a well dispersed discontinuous inclusion phase containing the hazardous elements... 

F.P. La Mantia, Basic concepts on the recycling of homogeneous and heterogeneous plastics, in Recycling ofPVC and Mixed Plastics (Chemtec Publishing, Toronto, 1993b)... 

Basic Concepts on the Recycling of Homogeneous and Heterogeneous Plastics... 

In this paper, the main problems arising during recycling of post-consumer plastic materials are briefly discussed in order to form some basic concepts on... 

Nevertheless, some of the basic points of Pfeffer s interpretation of CAM can still be accepted. The rediscovery of dark CO2 fixation gave no reason to change the basic concept that CAM is a mechanism to recover respiratory CO2 during the night (cf. the reviews of Wolf, 1960 Ranson and Thomas, 1960). It will be shown later that in fact in special cases, CAM photosynthesis can function nearly exclusively on recycled respiratory CO2 (see Chap. 6.2.2). 

Recycled plastics additives and their effects on properties BASIC CONCEPTS OF PLASTIC RECYCLING The main problems in plastics recycling are ... 

La Mantia, F.P. (1996) Basic Concepts on the Recycling of Homogeneous and Heterogeneous Plastics, Recycling of PVC and Mixed Pinsf jcs (ed. F.P. La Mantia), ChemTec, Toronto. 

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