[화학공학] Eco-friendly fuel and battery(영문)

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[화학공학] Eco-friendly fuel and battery(영문)에 대한 자료입니다.
목차
Introduction
The microbial fuel cell
Pros and cons of microbial fuel cell.
Principle of Microbial fuel cells.
Allen's microbial fuel cell
The need for microbial fuel cell
Bio deisel
Section 2: Types of biofuels
IGCC Power Generation
Description
In general the advantages of IGCC are:
본문내용
Integrated coal Gasification Combined Cycle (IGCC) power plant is the most environmentally friendly coal-fired power generation technology. Most importantly, coal gasification offers the immediate opportunity to generate power with near zero greenhouse gas emissions and the pathway to a future hydrogen economy.


Description

Coal gasification is the process of converting coal to a gaseous fuel through partial oxidation. The coal is fed into a high-temperature pressurized container along with steam and a limited amount of oxygen to produce a gas. The gas is known as synthesis gas or syngas and mainly consists of carbon monoxide and hydrogen. The gas is cooled and undesirable components, such as carbon dioxide and sulphur are removed. The gas can be used as a fuel or further processed and concentrated into a chemical or liquid fuel.

Integrated gasification combined-cycle (IGCC) systems combine a coal gasification unit with a gas fired combined cycle power generation unit. The first stage is the coal gasification process as mentioned above. The second stage takes the cleaned gas and burns it in a conventional gas turbine to produce electrical energy, and the hot exhaust gas is recovered and used to boil water, creating steam for a steam turbine which also produces electrical energy. In typical plants, about 65% of the electrical energy is produced by the gas turbine and 35% by the steam turbine.

In general the advantages of IGCC are:

-It can achieve up to 50% thermal efficiency. This is a higher efficiency compared to conventional coal power plants meaning there is less coal consumed to produce the same amount of energy, resulting in lower rates of carbon dioxide (CO2) emissions