TECHNICAL FIELD

[0001] The present invention relates to the technical field of SOFC, more particularly to an exhaust gas cooling and dewatering device and an SOFC vehicle.

BACKGROUND ART

Solid Oxide Fuel Cell (SOFC) is a full solid chemical power generation device, which directly converts the chemical energy stored in fuel and oxidant into electrical energy efficiently and in an environmentally friendly mode.

When an SOFC is applied to new energy vehicles, an SOFC exhaust gas is emitted by an engine exhaust line. Due to the fact that an engine exhaust gas has a temperature up to 500°C and contains a variety of moisture, it must be cooled before its ingredients analyzed. The engine exhaust gas will, during the temperature reduction, generate a variety of moisture, which will damage gas analysis equipment if entering therein. Hence, moisture needs to be removed before the exhaust gas ingredients are analyzed.

Accordingly, how to effectively remove moisture from the SOFC engine exhaust gas is a problem.

SUMMARY OF THE INVENTION

In view of this, the present invention provides an exhaust gas cooling and dewatering device to effectively remove moisture from an SOFC engine exhaust gas; The present invention further provides an SOFC vehicle.

A first aspect of the invention provides an exhaust gas cooling and dewatering device, comprising a moisture-gas separation barrel that cools and separates moisture from an exhaust gas. An exhaust gas inlet pipe that communicates the inside and outside of the moisture-gas separation barrel to input the exhaust gas, and an exhaust gas outlet pipe that expels the exhaust gas input into the moisture-gas separation barrel and protrudes into the bottom of the moisture-gas separation barrel in a vertical direction. The bottom of the moisture-gas separation barrel is further provided with a moisture receiver for collecting and draining cooling water for the exhaust gas.

The moisture-gas separation barrel can be axially arranged in a vertical direction, and the exhaust gas outlet pipe is coaxially frame-mounted inside the moisture-gas separation barrel.

The moisture-gas separation barrel can comprise an air duct inner barrel for performing circulation guide as well as cooling and dewatering for the exhaust gas, and a water- cooled outer barrel that surrounds the air duct inner barrel to accommodate a coolant. The water-cooled outer barrel is provided with a coolant inlet and a coolant outlet for introducing and expelling the coolant.

The exhaust gas inlet pipe can be arranged at the top of the moisture-gas separation barrel, and an inlet direction of the exhaust inlet pipe is arranged in a tangent direction of the moisture-gas separation barrel.

The moisture-gas separation barrel can be internally provided with a spiral guide structure that is connected to an air inlet direction of the exhaust gas inlet pipe and spirally guides an air inlet direction of the exhaust gas.

The spiral guide structure can be a spiral guide blade that is frame-mounted inside the moisture-gas separation barrel and protrudes in an axial direction thereof.

The coolant inlet can be arranged at the top of the water-cooled outer barrel, and the coolant outlet is arranged at the bottom of the water-cooled outer barrel.

The moisture receiver can include a receiving barrel that communicates the moisture- gas separation barrel and a drain line arranged at the bottom of the receiving barrel; the drain line is provided with a switch valve for controlling the same to be opened/closed.

The receiving barrel can be further provided with a high liquid level sensor and a low liquid level sensor for monitoring a highest liquid level and a lowest liquid level thereof, and the switch valve is a drainage solenoid valve controlled to be opened/closed by the high liquid level sensor and the low liquid level sensor.

A second aspect of the invention provides an SOFC vehicle, which is internally provided with an SOFC system and an exhaust gas emission line for emitting an exhaust gas from the SOFC system, wherein the exhaust gas cooling and dewatering device according to the first aspect is arranged between the SOFC system and the exhaust gas emission line.

The present invention provides an exhaust gas cooling and dewatering device, comprising a moisture-gas separation barrel that cools and separates moisture from an exhaust gas; an exhaust gas inlet pipe that communicates the inside and outside of the moisture-gas separation barrel to input the exhaust gas; and an exhaust gas outlet pipe that outputs the exhaust gas input into the moisture-gas separation barrel and protrudes into the bottom of the moisture-gas separation barrel in a vertical direction; the bottom of the moisture-gas separation barrel is further provided with a moisture receiver for collecting and draining cooling water for the exhaust gas. A high temperature exhaust gas is delivered into the moisture-gas separation barrel through an exhaust gas inlet pipe, so as to contact an inner wall of the moisture-gas separation barrel for cooling; moisture in the exhaust gas flows to the bottom of the moisture-gas separation barrel in a condensed manner; an exhaust gas outlet pipe protrudes to the bottom of the moisture- gas separation barrel; with the constant input of the exhaust gas, the exhaust gas is expelled in such a manner that the exhaust gas outlet pipe protrudes into an air inlet at the bottom of the moisture-gas separation barrel, the moisture receiver receives and discharges moisture flowing to the bottom of the moisture-gas separation barrel to realize moisture and gas separation of the exhaust gas. The moisture-gas separation barrel is used for cooling and dewatering the exhaust gas entering therein, the exhaust gas is in fully contact with the inner wall of the moisture-gas separation barrel to lower a temperature of the exhaust gas while the moisture is removed; the emitted exhaust gas can be subject to ingredient analysis or can be directly emitted, so as to improve the SOFC exhaust safety.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings used in the description will be briefly described below. The drawings in the description below are just some embodiments of the present invention.

Fig. l is a structural schematic view of an exhaust gas cooling and dewatering device.

DETAILED DESCRIPTION

The present invention provides an exhaust gas cooling and dewatering device to effectively remove moisture from an SOFC engine exhaust gas; the present invention further provides an SOFC vehicle.

Embodiments of the present invention will be described below in conjunction with the drawings. The described embodiments are only some, not all of the embodiments of the present invention.

Fig. 1 is a structural schematic view of an embodiment of an exhaust gas cooling and dewatering device provided by the present invention.

The present invention provides an exhaust gas cooling and dewatering device, comprising a moisture-gas separation barrel 1 that cools and separates moisture from an exhaust gas, an exhaust gas inlet pipe 2 that communicates the inside and outside of the moisture-gas separation barrel 1 to input the exhaust gas, and an exhaust gas outlet pipe 3 that outputs the exhaust gas input into the moisture-gas separation barrel 1 and protrudes into the bottom of the moisture-gas separation barrel 1 in a vertical direction. The bottom of the moisture-gas separation barrel 1 is further provided with a moisture receiver for collecting and draining cooling water for the exhaust gas. A high temperature exhaust gas is delivered into the moisture-gas separation barrel 1 through an exhaust gas inlet pipe 2, so as to contact an inner wall of the moisture-gas separation barrel 1 for cooling. Moisture in the exhaust gas flows to the bottom of the moisture- gas separation barrel 1 in a condensed manner; an exhaust outlet pipe 3 protrudes to the bottom of the moisture-gas separation barrel 1. With the constant input of the exhaust gas, the exhaust gas is emitted in such a manner that the exhaust gas outlet pipe 3 protrudes into an air inlet at the bottom of the moisture-gas separation barrel 1, the moisture receiver receives and discharges moisture flowing to the bottom of the moisture-gas separation barrel to realize moisture and gas separation of the exhaust gas. The exhaust gas entering therein is cooled and dewatered by the moisture-gas separation barrel 1, so that the exhaust gas is in fully contact with an inner wall of the moisture- gas separation barrel 1, thereby lowering the temperature of the exhaust gas while dewatering. Furthermore, the exhausted exhaust gas can be subject to ingredient analysis or can be exhausted directly, so that the SOFC exhaust safety is improved.

In an embodiment of the present invention, the moisture-gas separation barrel 1 is axially arranged in a vertical direction, and the exhaust gas outlet pipe 3 is coaxially frame-mounted inside the moisture-gas separation barrel 1. The moisture-gas separation barrel 1 is of a structure disposed in an axially vertical direction. The exhaust gas input is filled in the moisture-gas separation barrel 1 and is emitted by an exhaust gas outlet pipe 3 protruding into the bottom thereof. The exhaust gas outlet pipe 3 and the moisture-gas separation barrel 1 are coaxially disposed, so that a flow rate between the exhaust gas and the inner wall of the moisture-gas separation barrel 1 is even when the exhaust gas circulates in the moisture-gas separation barrel 1, the exhaust gas can be fully cooled, and the cooling states of the exhaust gas are consistent in the moisture- gas separation barrel.

In an embodiment of the present invention, the moisture-gas separation barrel 1 comprises an air duct inner barrel 11 for performing circulation guide as well as cooling and dewatering for the exhaust gas, and a water-cooled outer barrel 12 that surrounds the air duct inner barrel 11 to accommodate a coolant; the water-cooled outer barrel 12 is provided with a coolant inlet 4 and a coolant outlet 5 for introducing and expelling the coolant. The moisture-gas separation barrel 1 is of a dual-barrel structure consisting of the air duct inner barrel 11 and the water-cooled outer barrel 12 from inside to outside. The air duct inner barrel 11 is used for filling the exhaust gas, the water-cooled outer barrel 12 is used for cooling the air duct inner barrel 11. The coolant is circulated to continuously cool the air duct inner barrel, thereby condensing and removing moisture from the exhaust gas. For the water-cooled outer barrel 12, the coolant is delivered by the coolant inlet 4 and the coolant outlet 5. The coolant can be set as cooling water. A vehicle cooling system is communicated by the coolant inlet 4 and the coolant outlet 5 to ensure a constant cooling function of the moisture-gas separation barrel 1.

In an embodiment of the present invention, the exhaust gas inlet pipe 2 is arranged at the top of the moisture-gas separation barrel 1, and an inlet direction of the exhaust inlet pipe 2 is arranged in a tangent direction of the moisture-gas separation barrel 1. The exhaust gas is a high temperature gas, which is delivered to the top of a high temperature exhaust gas concentration barrel in the moisture-gas separation barrel 1, and then sinks after being cooled, and finally expelled by the exhaust gas outlet pipe 3. The exhaust gas inlet pipe 2 is arranged at the top of the moisture-gas separation barrel 1, and the high temperature exhaust gas circulates from above to below in the moisture-gas separation barrel 1, and is constantly cooled to realize a maximum moisture discharge in the exhaust gas in the course of circulating from above to below.

In an embodiment of the present invention, the moisture-gas separation barrel 1 is internally provided with a spiral guide structure 6 that is connected to an air inlet direction of the exhaust gas inlet pipe 3 and spirally guides an inlet direction of the exhaust gas. The high temperature exhaust gas enters the moisture-gas separation barrel 1 to fully contact an inner wall of the moisture-gas separation barrel 1. To make the exhaust gas fully contact the inner wall of the moisture-gas separation barrel 1, the spiral guide structure in the moisture-gas separation barrel 1 is arranged, and an air inlet direction of the exhaust gas inlet pipe 2 is fed in a tangent direction of the moisture-gas separation barrel 1, so that the exhaust gas circulates in a spiral guide structure, thereby spirally reducing the exhaust gas and further performing full contact between the exhaust gas and the inner wall of the moisture-gas separation barrel.

In an embodiment of the present invention, the spiral guide structure 6 is a spiral guide blade that is frame-mounted inside the moisture-gas separation barrel 1 and protrudes in an axial direction thereof. The spiral guide structure 6 can set the inner wall of the moisture-gas separation barrel 1 as a spiral guide duct. In this embodiment, the spiral guide structure is preferably set as the spiral guide blade frame-supported in the middle of the moisture-gas separation barrel and coaxially disposed with the moisture-gas separation barrel. The spiral guide blade can cut the exhaust gas while guiding when the exhaust gas is spirally fed, and the secondary guide is performed by the inner wall of the moisture-gas separation barrel and the spiral guide blade when the exhaust gas is circulated, thereby making the exhaust gas fully contact the moisture-gas separation barrel.

In an embodiment of the present invention, the coolant inlet 4 is arranged at the top of the water-cooled outer barrel 12, and the coolant outlet 5 is arranged at the bottom of the water-cooled outer barrel 12. The coolant circulates to a lower part from a top part of the moisture-gas separation barrel 1. The coolant inlet 4 and the coolant outlet 5 are located at two radial ends of the moisture-gas separation barrel 1 in a circulating direction. The coolant circulates downwards from the top of the moisture-gas separation barrel 1 to adapt to a high temperature exhaust gas structure at the top of the moisture- gas separation barrel 1, so that the moisture-gas separation barrel 1 is in an axial direction thereof, and the exhaust gas can be cooled to the same temperature to ensure temperature consistency.

In an embodiment of the present invention, the moisture receiver includes a receiving barrel 71 that communicates the moisture-gas separation barrel 1 and a drain line 72 that is arranged at the bottom of the receiving barrel 71. The drain line 72 is provided with a switch valve 73 for controlling the same to be opened/closed. The moisture receiver is located at the bottom of the moisture-gas separation barrel 1, and is preferably provided to be a receiving barrel 71 coaxially disposed with the moisture- gas separation barrel 1 structurally, so as to facilitate the preparation of the moisture- gas separation barrel 1. The bottom of the receiving barrel 71 is provided with the drain line 72 which is controlled to be opened/closed by the switch valve 73, thereby draining in time after the cooling water in the receiving barrel 71 is full to ensure the exhaust gas cooling safety.

The receiving barrel 71 can be further provided with a high liquid level sensor 81 and a low liquid level sensor 82 for monitoring a highest liquid level and a lowest liquid level thereof, and the switch valve 73 is a drainage solenoid valve controlled to be opened/closed by the high liquid level sensor 81 and the low liquid level sensor 82. To perform automatic control for the moisture-gas separation barrel, the high liquid level sensor and the low liquid level sensor as well as a waterproof solenoid valve automatically control the drainage from the receiving barrel, thereby facilitating the access into the vehicle control system.

Based on the exhaust gas cooling and dewatering device provided by the present invention, the present invention further provides an SOFC vehicle, which is internally provided with an SOFC system and an exhaust gas emission line for emitting an exhaust gas from the SOFC system, wherein the exhaust gas cooling and dewatering device provided in the above embodiments is arranged between the SOFC system and the exhaust gas emission line.

Because the exhaust gas cooling and dewatering device provided by the foregoing embodiments is applied to the SOFC vehicle, the beneficial effects of the SOFC vehicle brought about by the exhaust gas cooling and dewatering device are as described above.

Various modifications to these embodiments will be apparent. The general principle defined herein can be implemented in other embodiments without departing from the scope of the present invention.