Biogas drying stations

BIOGAS DRYING STATIONS

Biogas produced in digestion process is very wet. Relative humidity of biogas from anaerobic reactors and digesters reaches 100%.

Excessive humidity decreases biogas combustion efficiency by boilers or/and generators. Even low H2S concentrations in connection with high biogas humidity can significantly increase corrosion of biogas network devices and pipes.

Biogas drying stations offered by SiGa-Tech can lower relative humidity from 100% to 20-30%. Our system is very simple from technological point of view and highly efficient at the same time.

BIOGAS COOLING MODULE

First step of biogas drying is cooling process. Cooling module can be built as external container station with active security system or as skid frame version ready to be put on foundation. Cooling module can also be assembled internally – inside technological rooms, boiler rooms or co-generator rooms.
SiGa-Tech also offers cooling modules combined with gas blowers which increase biogas pressure and heat it at the same time.

 

Model

Biogas flow [Nm3/h]

Cooling power [kW]

Connection flange diameter

Heat exchanger type

SCH-50

50

4.9

DN65

WCmr-150

SCH-150

150

13.0

DN100

WCmr-250

SCH-300

300

15.5

DN150

WCmr-300

SCH-500

500

27.0

DN200

WCmr-400

SCH-700

700

32.0

2x DN150

2 x WCmr-300

 

BIOGAS HEATING MODULE

Second step of biogas drying is heating process. Heating modules can be built as external container station or as skid frame version ready to be put on foundation equipped with multi-stream heat exchangers supplied with hot water or equipped with electrical heating. Heating module can also be assembled internally – inside technological rooms, boiler rooms or co-generator rooms. Heating module is equipped with fluent hot water flow regulation which can assure required biogas parameters after biogas heating.

Model

Biogas flow [Nm3/h]

Heating power [kW]

Connection flange diameter

Heat exchanger type

HX-50

50

1.5

DN65

0.5 WCmr-150

HX-150

150

4.5

DN100

0.5 WCmr-250

HX-300

300

9.0

DN150

0.5 WCmr-300

HX-500

500

15.0

DN200

0.5 WCmr-400

HX-700

700

21.0

DN250

0.5 WCmr-400

 

Particular modules can be assembled separately or can be delivered as combined, complete drying stations – also connected with biogas conditioning devices (for example with siloxane removal filters)