Varieties of chemical reactions in chemical production, such as hydrogen production, coal-to-oil, natural gas reforming and etc., are completed under high temperature.
Currently, chemical materials are usually heated by burning mineral fuels like coal, crude oil or natural gas, which emits lots of greenhouse gases like carbon dioxide and toxic gases like sulfur dioxide and carbon monoxide. In Addition, using mineral fuels makes ﬁnancial burden heavier and proﬁt lower to the companies.
With CSP technology, a large area of sunlight is reﬂected into a small area, and the concentrated light is used to heat the material in the chemical reactions. In the solar gas reforming cycle, solar energy is used as a high temperature heat source to provide methane reforming with heat, and then is transformed into chemical energy to improve efﬁciency with the better quality of reformed gas. It is H2O or CO2 used with methane in gas reforming reactions. The related chemical equations are:
The main reaction:
CH4 + 2H2O → 3H2 + 2CO or CH4 + CO2 → 2H2 + 2CO
The vice reaction:
CO + H2O → H2CO2
In addition, as the progress of technology, there is no greenhouse gases emission in solar coal-to-gas process and thus solar coal-to-gas has a brighter and brighter future. The reactions of coal-to-gas are:
C + CO2 → 2CO; C + 2H2 → CH4;
CH4 + H2O → CO + 3H2; CO + H2O → CO2 + H2;
In the system of solar gas reforming or solar coal-to-gas, solar thermal application (including solar gas reforming or solar coal-to-gas) and electric power production systems are independent of each other, and so can be located differently. With the nonuniformity of solar energy resource in China, solar & Brayton combine cycle is promising in areas with solar energy resource insufﬁciency.
SunCan's team has proven expertise and experience in CSP technology, and has the ability to provide services including system integration and EPC of solar fuel systems.