Download e-book for iPad: Black Liquor Gasification by Pratima Bajpai

By Pratima Bajpai

ISBN-10: 008100009X

ISBN-13: 9780081000090

Black Liquor Gasification (BLG) is a primary of its style to lead chemical engineers, scholars, operators of paper vegetation, technocrats, and marketers on sensible directions and a holistic techno-enviro-economic point of view appropriate to their destiny or present initiatives in line with the therapy of black liquor for strength construction. BLG describes the gasification strategy as a extra effective replacement to present methods for the conversion of black liquor biomass into strength. BLG operates principally in sync with different the right way to enhance pulp-making potency. This ebook explains how BLG deals how to generate electrical energy and to reclaim pulping chemical substances from black liquor, and why BLG could substitute the Tomlinson restoration boiler for the restoration of spent chemical compounds and energy.

  • Describes the usage of black liquor as a resource of energy
  • Provides a close account of black liquor gasification tactics for the construction of strength and chemical compounds from black liquor
  • Provides directions to chemical engineers for the remedy of black liquor

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Those parameters were used to determine composition and heating value of the synthesis gas. It was found that the process could operate up to 720 C in the circulating fluidized bed without addition of TiO2. The synthesis gas composition was largely affected by relative oxidation and must be kept low to achieve a high heating value of the synthesis gas. An increase in relative oxidation from 30% to 50% decreased H2 content from 11% to 10% at 700 C. 5 and 1 MPa) at 900À1000 C. It was found that sodium penta-titanate formation was faster than sodium carbonate at elevated temperature.

The cleaned alkali solution is used in pulp mills for the preparation of white liquor and undesired elements are discharged as dregs. 10 shows cleaning system of syngas and green liquor generation (DeCarrera, 2002). The syngas leaving the gasifier passes through a cleaning and sulfur recovery system. 10). Then undesired particles are moved off by scrubbing and the gas goes to cooling. Purified solids and chilled gas is sent to the multistage countercurrent scrubber where it loses sulfur hydroxide by absorption in a mixture of sodium carbonate and caustic solution producing green liquor (DeCarrera, 2002).

Investment in biorefineries is a possible way for the industry to remain competitive with increased energy and raw material prices. Some mills, especially energy-efficient market kraft pulp mills, have the possibility to become major net exporters of electricity or lignin without purchasing external wood fuel (Pettersson, 2011). Nevertheless, in order for integrated pulp and paper mills, even those with a high degree of energy efficiency, to become major exporters of lignin or for any type of mill to become a major exporter of biofuels, external wood fuel is required.

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Black Liquor Gasification by Pratima Bajpai

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