摘要:

AbstractHydraulic loading of tank reactors.According to the present knowledge, the hydraulic loading of agitators, reactors, and internals can be summarized as follows: Hydraulic forces can be represent in dimensionless form with the aid of force coefficients. In the turbulent regime, the load comprises an average value and a fluctuating component. In the case of gasifying reactors, the entire tank can undergo resonance vibration, which can, however, be estimated in advance. Gassing has a subordinate effect upon the hydraulic shaft loading. Strouhal effects may have to be considered with various internals. Resonance effects have already by observed in practice.

ISSN:0009-286X    

DOI:10.1002/cite.330561002

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractBehaviour of (heavy) metals on incineration of municipal wastes.Incineration technology is being used to a growing extent for the disposal of municipal wastes. In order to make this technology less harmful to the environment, steps must be taken to counteract the emission of HCl and SO2and NOxas well as of some metals, above all mercury. For this purpose the pollutant inventory must be known more reliably than was previously the case. Care must also be taken that the problems connected with pollutants are not merely transposed from the air to water or solids. If necessary, the fractions that are soluble in a slightly acid medium must be removed from the fly ash, reacted chemically, and immobilized as compact materials. The actual incineration must be performed in such a way that inert slag is formed so that reusability is assured. The slag may also have to undergo chemical treatment.

ISSN:0009-286X    

DOI:10.1002/cite.330561003

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractUse of computers in chemical engineering.It is shown by various examples from three directions of development how modern microelectronics, especially microcomputer technology, can be used effectively in chemical engineering applications. These are applications of microprocessors in complicated measuring tasks, the distribution of computing power in computer networks and the use of specialized processors.

ISSN:0009-286X    

DOI:10.1002/cite.330561004

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

摘要:

AbstractSystems for the charging or discharging of bulk solids into or out of pressure chambers.In many branches of chemical and dressing technology there are compelling thermodynamic or economic reasons for carrying out various processes at pressures deviating from ambient values. If the reactants and products of these processes are dusts or granular solids then numerous problems are encountered on transfer between regions of higher or lower pressure. On the one hand, the properties of the feed (such as particle size, flow behaviour) should undergo the slightest possible modification, and on the other hand the transport of the material between the regions of differing pressure should be as continuous as possible. Moreover, the gas transport should be kept low. Pressure swing in the process region is to be avoided. The aim of this study was to survey all systems suitable for introduction or removal of bulk solids into or out of chambers at pressures other than the ambient value. The various pressure locks are assessed qualitatively for given tasks. A new solution is presented for the discharge of filter cake from high‐pressure chamber

ISSN:0009-286X    

DOI:10.1002/cite.330561005

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561006

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561007

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561008

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561009

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561010

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY

ISSN:0009-286X    

DOI:10.1002/cite.330561011

出版商:WILEY‐VCH Verlag    

年代:1984

数据来源: WILEY