Biomass Gasification Power Generation System
Product Description
Power generation by using biomass gas from rice husk, wood chips, saw dust, coconut husk, bagasse, straw and crop stalks can not only save electricity expenses in the production cost for rice mills and timber processing mills, but can also get benefits from the selling of surplus electric power to the power grid. Our biomass gasification equipment enjoys high conversion efficiency, by taking rice husk as an example, each kwh power generation consumes only 1.6~1.8kg rice husk, and the unit fuel consumption will be lower if wood chips or crop stalks are used. Water used for gas cleaning and cooling can be reused in a circulating way after being treated through water treatment facilities such as sediment ponds. It creates no environmental pollution and little make-up water will be needed. The water pond for each unit of 200kw plant only covers about 50m2 .The engines group and electrical equipments should be put indoors, and the other equipments could be put outdoors. The construction area for each 200kw generator set is approximately 40~50m2. The full set of equipment consumes only 5~8% of the generated power. Therefore, such a project is an ideal one with significant benefits for the area where there is a lot of discarded biomass resources but lack in electric power supply or with higher electricity expense. In general, the investment in the major equipment can be recovered from power generation benefits within the first two years. The equipment can be safely and reliably operated with operational technology. It’s easy to be mastered by workers. The maintenance and repair work is similar to ordinary diesel generators.
Biomass Gasification System series Specifications
|
Parameter/Type
|
LHC-200
|
LHC-400
|
LHC-600
|
LHC-800
|
LHC-1000
|
LHC-1200
|
|
Generator rated output power(KW)
|
200
|
400
|
600
|
800
|
1000
|
1200
|
|
Productio Volume of Biomass gas(Nm3/hr)
|
800
|
1500
|
2250
|
3000
|
3650
|
4500
|
|
Gas temperature of gasification furnace outlet (℃)
|
700~800
|
700~800
|
700~800
|
700~800
|
700~800
|
700~800
|
|
Gas temperature of the outlet after cooling and cleaning (℃)
|
＜ 45
|
＜ 45
|
＜ 45
|
＜ 45
|
＜ 45
|
＜ 45
|
|
Consumption of biomass fuel (ton/hr)
|
0.3~0.36
|
0.6~0.72
|
0.9~1.08
|
1.2~1.44
|
1.5~1.8
|
1.8~2.16
|
|
Volume of circulating water flow (m3/hr)
|
6~8
|
12~15
|
18~23
|
24~30
|
30~37
|
36~45
|
|
Gross weight of gasification furnace (ton)
|
21.8
|
26.7
|
30.8
|
34.8
|
38.7
|
42.5
|
|
Ash removing manner
|
Wet or dry type (screw conveyer collection & discharger)
|
|
Device of gas cooling & cleaning system
|
cyclone separator+spray scrubber+venturi scrubber +spray scrubber+ spray filter+roots blower+alkali water washer+ gas water separator
|
Notes：
The main components and caloricity of biomass gas are subjected to the characteristic of biomass fuel and gasification method.
The caloricity of biomass gasification gas is normally 1100-1500kcal/Nm3.(4.6~6.3MJ/Nm3)
For example, the main components of rice husk gasified gas are as follows:
|
Component
|
CO
|
H2
|
CH4
|
CmHn
|
H2S
|
CO2
|
O2
|
N2
|
|
Percentage
|
17.2
|
4.05
|
6.82
|
1.24
|
---
|
15.1
|
0.8
|
54.7
|
(The caloricity is：1393kcal/ m3 (5.83 MJ/Nm3)
When operation temperature is 800℃, the tar production ratio in fluid bed gasification furnace(patented product of Fengyu Group) is about 2.5%. Tar content after decoking treatment is less than 50mg/m3. After strict cleaning and thermal cracking, the dust & tar content of biomass gas are very tiny, which can meet the requirement for the normal operation of internal combustion engines.
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