China's existing variety of coal-bed methane power generation technology points but the advantages and disadvantages of various gas generator set
different need to choose according to actual situation, our country overall present a low content of methane, coalbed methane concentration characteristics of large fluctuations.
Cause its not like gas large-scale exploitation and utilization.
Utilization of CBM in China mainly concentrated in this part of the methane concentration is greater than or equal to 30%, it is for the use of residents, the second is for the gas power generation, practical way of coal-bed gas generating coal-bed methane power generation technology is as follows: advantage: gas internal combustion engine power generation system thermal efficiency is higher;
Compact structure, light weight, suitable for mobile;
Easy to start;
Wide range of optional power;
Strong adaptability for gas concentration in the faults: complicated structure, big noise;
Incomplete combustion, exhaust gas in CH, high content of CO, NOX pollutants such as gas turbine generating system advantages: simple and compact structure, convenient operation maintenance;
Start fast, smooth operation;
Low failure rate, high degree of automation disadvantages: small gas turbine is expensive, efficiency, higher requirements for the gas concentration in the more than 40% of the steam turbine generating system advantages: good use of waste heat;
Technology is relatively mature, mainly used in combined cycle power generation faults: equipment large, complex can't move;
Initial investment is large, low load operation efficiency is low;
High requirements for gas concentration in the more than 30%;
Cogeneration advantages: high thermal efficiency and low pollution, low environmental cost;
Save water, covers an area of savings, flexible equipment;
Disadvantages: only applies to mixed burning advantages: large scale power station to reduce SO2 and NOX emissions;
Reduce the scale of pure coal,
Less investment, technology risk small faults: the high quality requirements;
Boiler of power must be large enough only suitable for large power station
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