Introduces the working principle and advantages of carbon fuel cell

Source: 2020 - 04 - 02 'hits: time introduces the work principle and advantages of carbon fuel cell DirectCarbONFuelCell ( DCFC) Is a kind of carbon and its derivatives as the fuel of fuel cells. It has the ability of energy conversion, environmental friendly, The SOx and NOx emissions, noise pollution) Such outstanding advantages as, fuel wide adaptability. It is a kind of has a broad application prospect of fuel cell. The principle of carbon fuel cell Directcarbonfuelcell ( DCFC) Is a kind of no direct gasification of carbon chemical energy into electrical energy device. The technology of energy is the double of modern coal-fired power plants, fuel may include coal, coke, tar, gaseous carbon and carbon. Because of DCFC overall reaction: CO2 + O2 = C, therefore, theory of DCFC power even slightly higher than the 100% energy conversion. In order to reach the high working temperature of high energy and power requirements, there are two kinds of DCFC hot work: ( 1) The molten electrolyte fuel cell, its working temperature is 400 ~ 750 ℃; ( 2) SOFC working temperature is 700 ~ 1000 ℃. The benefits of directly using the carbon fuel cells, 1) DCFC energy conversion power is high, the theory of power of 100% or more. Fuel cell power theory of combustion guess the gibbs free energy & Delta; G and include fuel chemical energy ( Enthalpy) Δ H。 ( 2) DCFC fuel efficiency as high as 100%. Because of reactants, solid and gaseous carbon product, exists in different pure phase, their chemical potential ( Activity) Along with the fuel conversion degree and the direction of the battery. This feature allows all added fuel to a full transformation, namely utilization can reach 100%, theory of voltage can be in the whole process of carbon in a 1. 02 v is constant. Traditional fuel cell, fuel cycle only partly transformed to a certain extent, or as the fuel of voltage drop, the battery voltage drops, so the traditional fuel cell need to repeat part fuel cycle to adhere to the fuel pressure. ( 3) DCFC emissions is lesser, can terminate the emissions of greenhouse gases. From the point of view of chemical reaction, DCFC direct coal power generation and power plant adopts the complete combustion of coal. However, because of the different power generation principle, DCFC CO2 emissions from power generation, the SOx, NOx, dust and other contaminants than coal-fired electricity directly. ( 4) DCFC carbon fuel resources are rich, the price is cheap. It can be from coal, petroleum coke, biological materials ( Such as rice husk, shell, straw, grass) Even organic waste. After pyrolysis, the above material preparation into the DCFC carbon particles, the by-product hydrogen can be used for hydrogen fuel cells. Will direct carbon fuel cell, therefore, combined with other fuel cells, can realize the coal is abundant, cheap solid carbon fuels such as cleaning and efficient use. ( 5) DCFC solid carbon fuel energy density is big, easy storage and transportation. ( 6) The structure of the DCFC can be modular. Other fixed power plants don't need as much water as coal-fired power plants. These characteristics make DCFC particularly suitable for pithead power plant construction, coal transportation can be converted to electricity, thus reducing pollution from coal transportation, save transportation costs.