Abstract
A new type of power supply which was called oxy-fuel combustion power plant was introduced to reduce greenhouse gasses emission. In this paper the volatile emission characteristic of pulverized coal is studied under air atmosphere and oxy-fuel atmosphere. Combustion experiments of Datong bituminous coal were carried out in a wire mesh reactor at heating rates of 1 K/s, 10 K/s and 1000 K/s respectively under air and O2/CO2 atmosphere conditions in order to investigate the volatile emission characteristic. The concentrations of volatile (mainly CO and CH4) emission were on-line measured by infrared gas analyzer. It was indicated that the concentrations of CO and CH4 in O2/CO2 atmosphere were higher than those in air. The direct oxidation of carbon and gasification reaction between carbon and CO2 are the main causes of the increased amount of CO. The higher concentration of CO2 also results in the increased amount of CH4 in O2/CO2 conditions.
Highlights
The effect of greenhouse gasses on global climate change has resulted in the development of new technologies with lower emissions that can accommodate capture and sequestration of carbon dioxide [1,2], development of clean energy, smart grid and low-carbon economy has become a common choice for the world
The direct oxidation of carbon and gasification reaction between carbon and CO2 are the main causes of the increased amount of can also prevent fuel (CO)
In this paper the specific technical path for a smart grid to achieve low-carbon power system are proposed based on clean production, a new type of power supply called oxy-fuel combustion power plant was introduced
Summary
The effect of greenhouse gasses on global climate change has resulted in the development of new technologies with lower emissions that can accommodate capture and sequestration of carbon dioxide [1,2], development of clean energy, smart grid and low-carbon economy has become a common choice for the world. In this paper the specific technical path for a smart grid to achieve low-carbon power system are proposed based on clean production, a new type of power supply called oxy-fuel combustion power plant was introduced. Oxy-fuel combustion and CO2 capture from flue gases is a near-zero emission technology that can be adapted to both new and existing pulverized coal-fired power stations. It can produce a sequestration ready high-CO2-concentration effluent gas, and CO2 can be utilized in depleted oil and gas reservoirs to increase their production or storage in deep ocean and saline aquifers. Experimental and simulation studies have been carried out on CO production in the pulverized coal combustion process under air condition [14,15]. The measurement of CO and CH4 formation characteristics during pulverized coal combustion can be very accurate in air and O2/CO2 combustion
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