Biorefinery in the Pulp and Paper Industry by Pratima Bajpai PDF

By Pratima Bajpai

ISBN-10: 0124095089

ISBN-13: 9780124095083

The conventional pulp and paper manufacturers are dealing with new rivals in tropical and subtropical areas who use the most recent and biggest put in applied sciences, and still have wooden and exertions fee benefits. a result of expanding worldwide pageant, the wooded area items costs will proceed to diminish. to stay workable, the conventional manufacturers have to bring up profit via generating bioenergy and biomaterials as well as wooden, pulp, and paper items. during this so-called built-in items Biorefinery, all product traces are hugely built-in and effort effective. built-in items Biorefineries current the woodland items with a different chance to extend sales and enhance environmental sustainability. built-in items Biorefinery applied sciences will let to fabricate high-value chemical substances, fuels, and/or electrical energy whereas carrying on with to provide conventional wooden, pulp, and paper items. The already controls a lot of the uncooked fabric and infrastructure essential to create built-in items Biorefineries, and time table 2020 partnerships are rushing improvement of the most important allowing applied sciences. as soon as absolutely constructed and commercialized, those applied sciences will produce huge, immense power and environmental advantages for the and the state. Biorefinery within the Pulp and Paper Industry provides the biorefining idea, the possibilities for the pulp and paper undefined, and describes and discusses rising biorefinery approach suggestions. This booklet additionally highlights the environmental influence and the advanced and ambiguous decision-making demanding situations that generators will face whilst contemplating imposing the biorefinery.

- presents updated and authoritative info, mentioning pertinent study, in this well timed and critical topic

- Covers in nice intensity the biorefining thought, possibilities for the pulp and paper undefined, and rising biorefinery procedure options

- Highlights the environmental influence and the complicated and ambiguous decision-making demanding situations that generators will face while contemplating enforcing the biorefinery

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Example text

However, before it can totally replace the current recovery boiler technology, some work must be done to make it more economically attractive. One major area that requires attention is the causticization process. Gasification technology can cause significant increases in capacity for the lime cycle, requiring significant increases in fossil fuel consumption, and to improve economic viability, alternative causticization technologies must be considered. 46 Biorefinery in the Pulp and Paper Industry Gasification is a well-established technique, but its application to black liquor is new and creates specific research needs.

1996) and Sun et al. (2001), while ultrafiltration was used in the process used by Gabrielii et al. (2000). Methods used by N’Diaye et al. (1996) and Sun et al. 5 suitable for precipitation of hemicelluloses with ethanol. In this process, ethanol and acid are additional chemicals required and additional equipments for recovery of ethanol is necessary, thus leading to increase in production and capital cost. In addition, some ethanol is probably included in the precipitated solid phase representing ethanol loss or additional separation cost.

The smelt droplets are separated from the gas and dissolved in the quench liquid to form a green liquor solution. The green liquor, after heat exchanging with weak wash and final cooling, is fed to battery limit. The gas leaving the primary quench is further cooled to saturation in a second quench device. The saturated gas is simultaneously scrubbed from particles and cooled in a counter current condenser (CCC). The DP-1 plant utilizes cooling water as cooling medium in the CCC. In mill applications, the CCC will instead produce mediumpressure and low-pressure steam.

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Biorefinery in the Pulp and Paper Industry by Pratima Bajpai


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