By Pira International Ltd

Show description

Read Online or Download Chemical Recovery in Pulp and Papermaking PDF

Similar chemical engineering books

Chemical Engineering Dynamics: An Introduction to Modelling and Computer Simulation

In Chemical Engineering Dynamics, the modelling of dynamic chemical engineering tactics is gifted in a hugely comprehensible approach utilizing the original mixture of simplified primary idea and direct hands-on computing device simulation. the maths is stored to a minimal, and but the approximately a hundred examples provided on a CD-ROM illustrate nearly each point of chemical engineering technology.

Oil Refineries in the 21st Century: Energy Efficient, Cost Effective, Environmentally Benign

A really specified, conceivable method of enhancing power potency and value effectiveness in petroleum processing, facing the function of administration and refinery operators in attaining the easiest technological parameters, the main rational usage of strength, in addition to the best attainable fiscal luck.

Synthetic Liquids Production and Refining

Availability of cheap power is a key consider delivering monetary development and a stronger lifestyle. For transportation, just about all of the liquid fuels are made from crude oil. replacement carbon resources are getting used for transportation fuels simply on a restricted scale, and study efforts concentrating on the conversion of coal, normal gasoline, biomass and waste to liquid items (XTL conversion) ebb and stream with the cost of crude oil.

Extra resources for Chemical Recovery in Pulp and Papermaking

Example text

Falling-film evaporator). g. g. combustion in a recovery boiler). Part of the black liquor in the recirculation system is returned directly to the retention vessel in order to facilitate mixing and thus to bring about, in the retention vessel, crystallisation of inorganic salts of the black liquor that is as complete as possible. Some of the discharged black liquor may also be returned, and a mixer and/or baffles disposed in the retention tank in order to enhance the mixing still further (Agren 1998).

1). 2 Source: reproduced from Vakkilainen (2000c), with permission from Fapet Oy, Finland Steam generation increases as black liquor dry solids content increases. For a rise in dry solids content from 65% to 80%, the main steam flow increases by about 7%. The increase is more than 2% for each 5% increase in dry solids.

The availability of the system was as high as 93% during the first 18 months of operation. The three-dimensional model was used by Karvinen et al. (1991) to investigate the effects of increasing the dry solids content of black liquor on its combustion in a recovery Page 32 © Copyright Pira International Ltd 2008 Chemical Recovery in Pulp and Papermaking Black liquor evaporation 2 boiler. It was found that increasing the solids content to more than 75% produced advantages over conventional firing.

Download PDF sample

Rated 4.51 of 5 – based on 23 votes