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Home Environmental Facility and Technology of Biogas Utilization

Facility and Technology of Biogas Utilization

Description

Biogas (methane (СН4) and carbon dioxide (CO2) gaseous mixture) is fuel gaseous mixture with СН4 >50%. The use of biogas is an important task as it would solve ecological (limitation of biogas atmospheric emission) and economical (additional energy source) problems.

We have developed a technology and a facility for biogas utilization. The facility consists of 6 separation modules working alternately and ensuring continuity of the technological process. Depending on input biogas composition and requirements to products, facility can contain a set of all modules or one of them.

Facility allows to divide biogas into the components:

  • liquefied almost pure methane in standard vessels with volume 40-50 litters under the pressure 20 MPa and with purity 96%;
  • liquid carbon dioxide in similar vessels under the pressure 5~6 MPa;
  • solide carbones dioxyde (dry ice ).

Technical parameters of the facility:

  • overall dimensions, mm ––––––––––––––––––––––––––––––––––––––––––––––––– 1700 x 1050 x 650;
  • productivity in biogas terms –––––––––––––––––––––––––––––––––––––––––––––– 50 nm3/hour;
  • admixtures of the other components in the separated methane and carbon dioxide - ~4%;
  • facility weight ––––––––––––––––––––––––––––––––––––––––––––––––––––––––– ~150 kg.

Pressure swing method was used for this work. Method uses different concentrations of biogas components in the gaseous phase at the upper and lower pressure levels in absorber, that is caused by different absorbability of the carbon dioxide and methane. When gaseous phase is sampled from the absorber at the upper pressure level, we obtain mixture enriched with less sorbent component – methane, when it is done at the low pressure level – more sorbent carbon dioxide.

Facility block scheme, its general view and motor-generator are shown at the pictures.

Innovative Aspect and Main Advantages

The main innovative aspect is the use of the Pressure Swing Method (PSM). The cycle is short and the process requires room temperature. These two factors combined with motor-generator working at the produced methane en sure autonomous facility operation.

Areas of Application

The facility can be used in different fields in which organic wastes are concerned:

  • Agriculture;
  • Factories of the food industry;
  • Plants of biological purification foul water;
  • Solid domestic waste dumps.

Block diagram of the autonomous complex
Fig. 1 Block diagram of the autonomous complex facility for bio-gas utilization

Facility for biogas separation.
Fig. 2 Model of an exper-
imental industrial
facility for biogas
separation.
General view

Motor-generator
Fig. 3 Motor-generator

Stage of Development

Development phase – laboratory tested, available for demonstration.

Patented: Patents of Ukraine: U 38746 A, bulletin #4, 2001; U 44512 A, bulletin #2, 2002; 8870, bulletin #8, 15.08.2005

Contact Details

National Science Center “Kharkov Institute of Physics and Technology”
Contact person: Khazhmuradov Manap A.
Address: 1, Academichna, 61108, Kharkov, Ukraine
Tel.: (+38 057) 335 6846
Fax: (+38 057) 335 3533
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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