Integrace tepla z tepelných čerpadel aplikovaných v systémech zplyňování biomasy

Heat integrated heat pumping for biomass gasification processing

journal article - other

en

The main part of this paper is an industrial case study. It deals with an application of a heat pump in energy systems for biomass gasification in a wood processing plant. Process integration methodology is applied to deal with complex design interactions as many streams requiring heating and cooling are involved in the energy recovery. A refrigeration cycle maintains low temperature in the scrubber where the production gas (or synthesis gas, syngas) is cooled and undesirable contaminants are removed before the syngas is introduced into the engine. In addition to electricity generation, a large amount of waste heat is available in the biomass gasification system studied in the paper, and its appropriate heat integration with utility systems within a plant allows the available heat to be efficiently utilized for the site. The conceptual understanding gained from the case study provides systematic design guidelines for further process development and industrial implementation in practice.

Článek představuje průmyslovou případovou studii zaměřenou na aplikaci tepelného čerpadla v energetickém systému pro zplyňování biomasy v rámci dřevozpracujícícho provozu. Řešený systém se vyznačuje velkým početem proudů, mezi kterými může probíhat výměna tepla. Proto je využit přístup Integrace procesů. Chladicí zařízení udržuje nízkou teplotu v pračce, ve které se produkční (syntézní) plyn chladí a tím rovněž zbavuje nežádoucích látek. Čistý plyn může bý veden do kogenerační jednotky. Systém vedle elektřiny produkuje velké množství odpadního tepla. Přístup založený na Integraci procesů je použit k identifikaci takového řešení, které umožní toto teplo efektivně využít v rámci provozu.

The main part of this paper is an industrial case study. It deals with an application of a heat pump in energy systems for biomass gasification in a wood processing plant. Process integration methodology is applied to deal with complex design interactions as many streams requiring heating and cooling are involved in the energy recovery. A refrigeration cycle maintains low temperature in the scrubber where the production gas (or synthesis gas, syngas) is cooled and undesirable contaminants are removed before the syngas is introduced into the engine. In addition to electricity generation, a large amount of waste heat is available in the biomass gasification system studied in the paper, and its appropriate heat integration with utility systems within a plant allows the available heat to be efficiently utilized for the site. The conceptual understanding gained from the case study provides systematic design guidelines for further process development and industrial implementation in practice.

Zplyňování biomasy; Sušení dřeva; Tepelné čerpadlo; Integrace tepla; Složená kompozitní křivka

Biomass gasification; Wood drying; Heat pump; Heat integration; Grand composite curve

2009

24.03.2009

1359-4311

Applied Thermal Engineering

30

1

30–35

6