Center process intensification

In Great Britain, Crowford [2], Notlingk and Neppiras [24], Chalmers [25], and a number of other scientists have devoted their work to the ultrasound effect on metallurgical processes. Recently the investigations on intensification of various chemical and metallurgical processes under acoustic cavitation field are centered at Coventry University (Mason [26]). 

Let us consider further reasons of pol5rmer chains breaking at so small stresses, which can be on order lower than ftacture macroscopic stress (i.e., at h5rpothetical k = 0.1). The reasons were pointed for the first time in Refs. [1, 26]. Firstly, anharmonicity intensification in fracture center gives the effect, identical to mechanical overloading effect [26]. Quantitatively this effect is expressed by the ratio of thermal expansion coefficient in fracture center and modal thermal expansion coefficient [5]. The second reason is close inter communication of local yielding and fracture processes [ 1]. This allows to identify fracture center for nonoriented polymers as local plasticity zone [27, 28]. The ratio uJ(X in this case can be reached -100 [5]. This effect compensates completely k reduction lower than one. So, for PC ala 70, K- = 0.44, a. = O.IE. 700 MPa and fiien o = o a /K,a 23 MPa, that by order of magnitude corresponds to experimental value Oj. for PC, which is equal approximately to 50 MPa at T= 293 K [7]. 

The intensification of processes leads to a constant decline of an ecological situation in industrially developed centers. It is ealled by increasing volumes of the gas emissions containing toxic components. The problem of working out of the highly effective dedusters possessing operate reliability, the big carrying capacity, and small power consumption is actual. 

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