The system shown consists of a thermoelectric power plant in which a oxyfuel boiler mixes coal and pure oxygen to heat water and generate steam and then go through a turbine and generate electricity.

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   The process begins in Loop 101 in which there is a fan that feeds air to an ASU (air separator unit) which separates the air in nitrogen and oxygen, the latter will be used in the boiler for better combustion. On the other hand, it feeds the boiler with ground coal which is carried to it by a conveyor belt moved by an electric motor. A temperature transmitter (TT) protected by a Thermowell (TW) which will measure the temperature inside the boiler, it sends an electrical signal to a temperature indicator controller (TIC) connected to a Multi-variable recorder (UR) and performs a "proportion" (K) function to regulate the amounts of carbon and oxygen entering the boiler. The TIC is connected by data signal an indicator of quantity (QI) and that by electric signal will turn on or off the switch of the electric motor of the conveyor belt (QS). In addition, to the TIC are connected by electrical signal the relays (TY) that are in the oxygen output of the ASU and in the three-way valve of the output of the gases of the boiler that by means of transducers (I/P) will open or close.

 

   In the Loop 102 there is a pressure transmitter (PT) which is connected to a pressure indicator controller (PIC) that will be in charge of controlling the pressure inside the boiler, this in turn sends a pneumatic signal to a safety valve (PV) of type opening by Failure to open when the pressure in the boiler is large. The PIC is connected to a very high pressure alarm (PAHH) by interlocking, a switch (PS) and a low pressure alarm (PAL).   The boiler has an output for the ash generated during the combustion of the coal which will be stored in a container and then discarded.

 

In Loop 103 at the overheated steam output is a temperature transmitter (TT) protected by a thermo-well (TW) and is connected to a temperature recorder controller (CRT) which sends a pneumatic signal to a valve (TV) type opening by Fault (FO) to open when the steam temperature is adequate and thus pass the steam turbine. The CRT is connected to a temperature transmitter (TT) protected by thermo-well (TW) which is connected to the water output coming from the economizer where the heat of the boiler gases is used to preheat the water and to facilitate its evaporation. , a valve (TV) is connected to this output, the CRT will activate the valve when the preheated water is at the desired temperature to switch to the boiler.

 

 In the Loop 104 is the steam turbine, which is connected to an electric generator which will transform the mechanical energy from the turbine to electric power and can be used in the installations of the industry, to this generator is They connect a wáttmetro (W) to measure its power, a voltmeter (V) to measure the voltage drop and an ammeter (a) to measure the current, all as dashboard instruments and accessible to the operator.

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In the Loop 105 is the condenser, which will receive the steam coming out of the turbine and which by cooling water, condense the steam until it becomes sub-cooled water, at the outlet of the condenser a temperature transmitter is connected (TT) Protected by a thermo-well (TW), which is connected to a temperature indicator controller (TIC) and that by pneumatic signal will open the valve (TV) when the water coming out of the condenser is at a temperature Ade

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In loop 106 is the separator, which will receive the gases coming out of the economizer and separate them in CO2 and water. The CO2 coming out of the separator passes to a catalyst to reduce its impact on the environment. The water coming out of the separator passes into a tank where it will be stored. In this tank there is a level transmitter (LT) which sends a signal to a level indicator controller (LIC), which in turn will open a three-way valve (LV) when the maximum water level has been reached inside the tank, so that it is passed along with the water Q EU comes from the Loop 105 centrifuge pump and thus be used in the system Economizer.