Hydrothermale Carbonisierung: Möglichkeiten der Prozessbeschreibung und der Bilanzierung

Ramke, Hans-Günter; Blöhse, Dennis; Lehmann, H.‐J.

doi:10.1002/cite.201050613

Cited by 5 publications

(8 citation statements)

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“…Additionally it should increase with an increasing OLR. Compared with results by [10] this is also within the reported range of 1.9 to 22.8 mL mL -1 of HTC waste water. Converted to the reported unit the continuous experiment yielded up to 19 mL mL -1 .…”

Section: Calculationssupporting

confidence: 87%

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Anaerobic Digestion of Waste Water from Hydrothermal Carbonization of Corn Silage

Wirth¹,

Mumme²

2014

Applied Bioenergy

110

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This experimental work investigates anaerobic digestion of waste water from hydrothermal carbonization of maize silage comparing a continuously stirred-tank reactor (CSTR) and an anaerobic filter (AF). Both reactors were operated for 91 days at a constant organic loading rate of 1 g COD L -1 d . Consecutively lower degradation rates were assumed to be caused by a significant lack of sulfur and phosphorus due to a precipitation by ferrous iron. Over the whole time the AF proved to be more stable. Very small concentrations of phenol compounds contained in the waste water were nevertheless degraded by up to 80 %.

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Section: Calculationssupporting

confidence: 87%

“…Converted to the reported unit the continuous experiment yielded up to 19 mL mL -1 . Unfortunately the studies by [10] and [11] do not report on specific biogas yields per gram of COD or TOC contained within the HTC waste water and allow therefore only a raw comparison to the conducted study.…”

Section: Calculationsmentioning

confidence: 99%

Anaerobic Digestion of Waste Water from Hydrothermal Carbonization of Corn Silage

Wirth¹,

Mumme²

2014

Applied Bioenergy

110

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“…Ash characteristics play an important role in system design in order to minimize slagging, fouling, erosion, and corrosion. The hydrothermal carbonization or the coalification process that happen can be described (Figure 8) by the van Krevelen diagram or coalification diagram [18]. During carbonization as a result of demethylation, decarboxylation, and dehydration reaction, there is a reduction of hydrogen and oxygen content in the feedstock.…”

Section: Proximate and Ultimate Analysis Of Hydrocharmentioning

confidence: 99%

Hydrothermal carbonization of biomass waste under low temperature condition

et al. 2018

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Abstract. In this paper, the use of banana peel for energy purposes was investigated. Banana peel is a lignocellulosic waste since it is the most widely produced and consumed fruit in Indonesia. Among the others, hydrothermal carbonization (HTC) was chosen as alternative themochemical process, suitable for high moisture biomass. Through a 1 L stirred reactor, hydrothermal treatments were performed under low temperature condition (190, 210 and 230 o C), residence times (30 and 60 min), and biomass to water ratio (1:3, 1:5, and 1:10). Three of product were collected from the process with primary material balance. Solid phase (hydrochar) was evaluated in terms of calorific value, proximate and ultimate analysis. The results suggested that the hydrothermal carbonization of banana peel gave high heating value (HHV) of 20.09 MJ/kg for its char after dried naturally.

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“…Previous simulation studies show that for fresh wood with 50 to 60% moisture (wet basis), pre-treatment with HTC before combustion could increase the overall energetic efficiency compared to the combustion of the untreated wood by 5 to 12 percentage points, given that dissolved organics losses are limited to 5% (by weight) and that mechanical dewatering yields 70% dry matter content [4]. In laboratory scale dewatering experiments, a dry matter content of 57 to 68% was achieved for biocoal from biodegradable waste [9]. Fig.…”

Section: Hydrothermal Carbonization As An Upgrading Technology For Bimentioning

confidence: 99%

“…In the analyzed plant designs, 21 600 to 68 400 m 3 per year of waste water are generated. That said, experiments on aerobic and anaerobic degradation are reported to indicate good degradability [9]. Low-boiling organics might evaporate in the drier and necessitate remedial treatment of the drier exhaust for VOC emissions.…”

Section: Further Technical Considerationsmentioning

confidence: 99%

Co-Production of Electricity, Heat and Biocoal Pellets from Biomass: A Techno-Economic Comparison with Wood Pelletizing

Erlach¹,

Wirth²,

Tsatsaronis³

2011

Linköping Electronic Conference Proceedings

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Hydrothermal carbonization (HTC) is an artificial coalification process which converts raw biomass into a coal-like product, biocoal. Biocoal has a higher energy density than the original biomass and is easier to transport, store and process. Hence, HTC is recently promoted as an upgrading technology, especially for wet biomass. For HTC to become a commercial technology, it is essential to identify applications which offer technical or economic advantages over conventional biomass processes. This paper presents a process design where HTC is integrated with wood-fired combined heat and power production (HTC-CHP), and compares it to standalone HTC (HTC-sep) and to wood pelletizing integrated with CHP (WP-CHP). The respective plant designs are modeled with Aspen Plus and an economic analysis is performed using investment costs from literature. The overall efficiency of electricity, heat and wood or biocoal pellet production is very close in all considered cases. When biodegradable waste is available at zero cost, the production costs of biocoal pellets are similar to those of wood pellets. If wood chips are used as an HTC feedstock, the production costs are 32-38% higher. The average cost of CO 2 avoidance is highest for the standalone HTC plant, due to the auxiliary consumption of natural gas and electricity.

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Hydrothermale Carbonisierung: Möglichkeiten der Prozessbeschreibung und der Bilanzierung

Cited by 5 publications

References 0 publications

Anaerobic Digestion of Waste Water from Hydrothermal Carbonization of Corn Silage

Anaerobic Digestion of Waste Water from Hydrothermal Carbonization of Corn Silage

Hydrothermal carbonization of biomass waste under low temperature condition

Co-Production of Electricity, Heat and Biocoal Pellets from Biomass: A Techno-Economic Comparison with Wood Pelletizing

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