Molten carbonate fuel cell and calcium circulation integration system and method

Abstract

The invention discloses a molten carbonate fuel cell and calcium circulation integration system and a method. The integration system comprises a synthesis gas unit, a raw material unit, a first raw material preheating unit, a carbonation reaction unit, a first gas-solid separator, a second raw material preheating unit, a calcining furnace reactor, a second gas-solid separator and a fuel cell, wherein the output ports of the synthesis gas unit and the raw material unit are connected with the inlet of the first raw material preheating unit; the outlet of the first raw material preheating unit isconnected with the inlet of the carbonation reaction unit; the outlet of the carbonation reaction unit is connected with the inlet of the first gas-solid separator, and the gas outlet of the first gas-solid separator is communicated with the anode of the fuel cell; the outlet of a methane unit, the output of an air unit and the solid outlet of the first gas-solid separator are connected with theinlet of the second raw material preheating unit, the second raw material preheating unit is connected with the inlet of the second gas-solid separator through the calcining furnace reactor, and the gas outlet of the second gas-solid separator is communicated with the cathode of the fuel cell. The integration system realizes the comprehensive utilization of energy.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a molten carbonate fuel cell and calcium cycle integration system and method. Background technique [0002] With the increase of oil and coal energy costs in the next few years, the pollution produced by fossil energy will become more and more serious. As a clean and efficient power generation technology: molten carbonate fuel cell (molten carbonate fuel cell, MCFC), can The conversion of chemical energy into electrical energy has the advantages of not using noble metal catalysts, wide sources of fuel, etc., and can be combined with steam turbine equipment to form a cycle power generation system, making its application prospects more promising. [0003] The application of calcium circulation method in coal-fired power plants is mainly combustion process and gasification process, and capture carbon dioxide through calcium-based absorbent cycle calcination / carbonation reaction, ...

AI Technical Summary

Problems solved by technology

Among them, the technology of directly capturing carbon dioxide by using calcium-based absorbent cyclic calcination and pressurized fluidized bed combustion process is relatively mature, but the power generation efficiency is low

[0004] Molten carbonate fuel cell and calcium recycling method are both used alone in the prior art, and the primary energy consumption is large and the energy utilization rate is low

Images