The present invention provides a fuel cell system using combustion heat for an evaporator and a desulfurizer effectively. The fuel cell system comprises a combustor, a reformer, a fuel cell, a first cathode air heating part, a desulfurizer and an evaporator. A mixture of oxygen and gas which is cont
The present invention provides a fuel cell system using combustion heat for an evaporator and a desulfurizer effectively. The fuel cell system comprises a combustor, a reformer, a fuel cell, a first cathode air heating part, a desulfurizer and an evaporator. A mixture of oxygen and gas which is contained in fuel is combusted in the combustor. A combustion exhaust gas generated in the combustor flows in the fuel cell system in such a manner that the combustion exhaust gas gives thermal energy to the reformer, the first cathode air heating part, the desulfurizer, and the evaporator in this order.
대표청구항▼
1. A fuel cell system comprising: a combustor where a mixture of oxygen and gas which is contained in fuel is combusted;a reformer for generating a reformed gas to be used as the fuel through a reforming reaction from supplied gaseous fuel using a combustion exhaust gas generated in the combustor as
1. A fuel cell system comprising: a combustor where a mixture of oxygen and gas which is contained in fuel is combusted;a reformer for generating a reformed gas to be used as the fuel through a reforming reaction from supplied gaseous fuel using a combustion exhaust gas generated in the combustor as a heat source;a fuel cell for generating electric power through a reaction of the reformed gas and an oxidation gas;a first cathode air heating part for heating the oxidation gas to be supplied to the fuel cell using the combustion exhaust gas which has heated the reformer as a heat source;a desulfurizer for removing a sulfur ingredient contained in the fuel to be supplied to the reformer using the combustion exhaust gas which has heated the first cathode air heating part as a heat source; andan evaporator for generating water vapor to be supplied to the reformer by evaporating a supplied water using the combustion exhaust gas which has heated the desulfurizer as a heat source,wherein the reformer, the first cathode air heating part, the desulfurizer, and the evaporator are disposed in this order along a heat transfer direction of the combustion exhaust gas from the combustor in such a manner that the combustion exhaust gas flows from a device which operates at a higher temperature to a device which operates at a lower temperature. 2. The fuel cell system according to claim 1, further comprising: a cathode air supply flow channel through which the oxidation gas to be supplied to the fuel cell through the first cathode air heating part flows, whereinthe cathode air supply flow channel has a second cathode air heating part for heating the oxidation gas flowing through the cathode air supply flow channel using heat generated in the fuel cell. 3. The fuel cell system according to claim 2, wherein the second cathode air heating part is disposed at a bottom of the fuel cell, andthe cathode air supply flow channel is provided with the second cathode air heating part on an upstream side of the first cathode air heating part. 4. The fuel cell system according to claim 2, wherein the second cathode air heating part is disposed at a bottom of the fuel cell, andthe cathode air supply flow channel is provided with the second cathode air heating part on a downstream side of the first cathode air heating part. 5. The fuel cell system according to claim 1, further comprising: a metal plate disposed between the combustor and the reformer, whereina space through which the combustion exhaust gas generated in the combustor flows is formed between the metal plate and the reformer. 6. The fuel cell system according to claim 1, wherein a first space is formed between the combustor and the reformer,a second space is formed between the reformer and the first cathode air heating part,a third space is formed between the first cathode air heating part and the desulfurizer,a fourth space is formed between the desulfurizer and the evaporator, andat least one space selected from the second space, the third space, and the fourth space functions as a flow channel through which the combustion exhaust gas flows. 7. The fuel cell system according to claim 6, wherein a direction in which the combustion exhaust gas flows in one space selected from the group consisting of the second space, the third space, and the fourth space is opposite to a direction in which the combustion exhaust gas flows in at least one of the other spaces. 8. The fuel cell system according to claim 7, further comprising: a first exhaust gas introduction guide for leading the combustion exhaust gas to the second space; anda second exhaust gas introduction guide for leading the combustion exhaust gas to the third space, whereinthe first exhaust gas introduction guide is provided at one end of the bottom surface of the first cathode air heating part,the first exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the first cathode air heating part,the second exhaust gas introduction guide is provided at one end of the bottom surface of the desulfurizer in such a manner that the first cathode air heating part is interposed between the first exhaust gas introduction guide and the second exhaust gas introduction guide,the second exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the desulfurizer, andthe direction in which the combustion exhaust gas flows in the second space is opposite to the direction in which the combustion exhaust gas flows in the third space. 9. The fuel cell system according to claim 7, further comprising: a first exhaust gas introduction guide for leading the combustion exhaust gas to the second space; anda second exhaust gas introduction guide for leading the combustion exhaust gas to the fourth space, whereinthe first exhaust gas introduction guide is provided at one end of the bottom surface of the first cathode air heating part,the first exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the first cathode air heating part,the second exhaust gas introduction guide is provided at one end of the bottom surface of the evaporator in such a manner that the first cathode air heating part and the desulfurizer are interposed between the first exhaust gas introduction guide and the second exhaust gas introduction guide,the second exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the evaporator, andthe direction in which the combustion exhaust gas flows in the second space is opposite to the direction in which the combustion exhaust gas flows in the fourth space. 10. The fuel cell system according to claim 8, further comprising: a first exhaust gas lead-out part for upwardly leading the combustion exhaust gas which has flowed through the second space, whereinthe first exhaust gas lead-out part is provided at one end of an upper surface of the reformer in such a manner that the reformer is interposed between the first exhaust gas lead-out part and the first exhaust gas introduction guide, andthe first exhaust gas lead-out part is inclined or extended upwardly from the one end of the upper surface of the reformer. 11. The fuel cell system according to claim 7, further comprising: a first exhaust gas introduction guide for leading the combustion exhaust gas to the third space; anda second exhaust gas introduction guide for leading the combustion exhaust gas to the fourth space, whereinthe first exhaust gas introduction guide is provided at one end of the bottom surface of the desulfurizer,the first exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the desulfurizer,the second exhaust gas introduction guide is provided at one end of the bottom surface of the evaporator in such a manner that the desulfurizer is interposed between the first exhaust gas introduction guide and the second exhaust gas introduction guide,the second exhaust gas introduction guide is inclined or extended downwardly from the one end of the bottom surface of the evaporator, andthe direction in which the combustion exhaust gas flows in the third space is opposite to the direction in which the combustion exhaust gas flows in the fourth space. 12. The fuel cell system according to claim 11, further comprising: a first exhaust gas lead-out part for upwardly leading the combustion exhaust gas which has flowed through the third space, whereinthe first exhaust gas lead-out part is provided at one end of an upper surface of the first cathode air heating part in such a manner that the first cathode air heating part is interposed between the first exhaust gas lead-out part and the first exhaust gas introduction guide, andthe first exhaust gas lead-out part is inclined or extended upwardly from the one end of the upper surface of the first cathode air heating part. 13. The fuel cell system according to claim 6, further comprising: a housing, whereinthe housing contains the fuel cell, the combustor, the reformer, the first cathode air heating part, the desulfurizer, and the evaporator,the reformer is disposed above the combustor,the first cathode air heating part is disposed above the reformer,the desulfurizer is disposed above the first cathode air heating part, andthe evaporator is disposed above the desulfurizer. 14. The fuel cell system according to claim 1, further comprising: a first housing part;a second housing part; andan exhaust gas flow channel, whereinthe first housing part contains the fuel cell and the combustor,the second housing part contains the evaporator, andthe exhaust gas flow channel connects the first housing part to the second housing part. 15. The fuel cell system according to claim 1, wherein the reformer operates under a temperature of not less than approximately 550 degrees Celsius and not more than approximately 650 degrees Celsius,the first cathode air heating part is heated to not less than approximately 400 degrees Celsius and not more than approximately 650 degrees Celsius,the desulfurizer operates under a temperature of not less than approximately 350 degrees Celsius and not more than approximately 400 degrees Celsius, andthe evaporator is heated to not less than approximately 100 degrees Celsius and not more than approximately 350 degrees Celsius. 16. The fuel cell system according to claim 1, wherein the fuel cell comprises a cathode, an anode, and an electrolyte membrane, andthe electrolyte membrane is made of a solid oxide. 17. The fuel cell system according to claim 16, wherein the mixture contains oxygen which has not reacted in the cathode. 18. The fuel cell system according to claim 16, wherein the mixture contains the fuel which has not reacted in the anode.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.