ISSN:0009-286X    

DOI:10.1002/cite.330650602

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractPressure Pulsations Caused by Reciprocating Pumps in Piping Systems. The safe design of piping installations for reciprocating pumps requires proper knowledge about the pump/installation interaction. In many cases critical resonance effects can be avoided by proper piping geometry or improved pump performance with respect to the volumetric efficiency (primary measures). Normally it is necessary to use various secondary dampening methods which can influence the acoustics of the piping system. Several examples of experimental computer simulations of damper action – upstream and downstream – are presented for fluidand gas‐filled damper versions. The influence of entry geometry of the dampers is explained, hints on the proper geometry of the entries are given and the effects of various dampers and their influence on the total acoustics are discussed. Special reference is made to the effect of orifices as dissipative and acoustic elements in piping systems. The investigation shows the importance of analyzing of the total system of pump, piping installation and vessels or reactors and the application of computer simulation for piping d

ISSN:0009-286X    

DOI:10.1002/cite.330650603

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractChoice of Materials of Construction for Chemical Process Engineering. The choice of appropriate materials is of critical importance for the trouble‐free operation of chemical plant and for economic production. Questions of materials should therefore be considered at an early stage of process development. As a rule, the boundary conditions having a direct influence on the choice of materials are communicated by the process engineer to the materials scientist. Several approaches to the proper choice of materials are usually possible. This choice must ensure that adequate safety reserves are available without making the plant unnecessarily expensive. Although numerous methods are available for determining the properties of materials, testing under operating conditions for specific applications is the optimal approach. The experience amassed by materials experts in practice is an extremely important and indispensable factor because there is much knowledge which cannot simply be expressed in equations and number

ISSN:0009-286X    

DOI:10.1002/cite.330650604

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractFeedstock Recycling and Energy Recovery from Plastics Waste. The disposal concept of the plastics industry comprises the following four steps: prevention/reduction, recycling of material (mechanical recycling, feedstock recycling), energy recovery and dumping. Feedstock recycling or chemical recycling stands for the chemical conversion of polymer materials with reduction of macromolecular structure to low‐molecular raw materials. The combustion of plastics waste uses the high calorific value of plastics for energy recovery. This paper describes some of the processes for feedstock recycling and for energy recovery from plastics wast

ISSN:0009-286X    

DOI:10.1002/cite.330650605

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

摘要:

AbstractBehaviour of Fine‐Grained Bulk Solids. The behaviour of fine‐grained bulk solids embraces such diverse phenomena as the moistening properties or thermal conductivity. Only two aspects are considered in this article, viz, the mechanics of bulk materials and the flow mechanics of fine‐grained bulk solids. The interplay of these two areas is illustrated by a detailed analysis of the various kinds of gas fluidis

ISSN:0009-286X    

DOI:10.1002/cite.330650606

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650607

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650608

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650609

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650610

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330650611

出版商:WILEY‐VCH Verlag    

年代:1993

数据来源: WILEY