An alcohol microchannel oxidative evaporation reforming heat exchange reactor

Abstract

The present invention discloses an alcohol microchannel oxidative evaporation reforming heat exchange reactor. The technical solution of the present invention is as follows: It includes a reaction module, and the reaction module includes a plurality of stacked plate groups. Each plate group includes two relatively arranged microchannel unit plates. On the front surface of the microchannel unit plate, a plurality of reaction grooves are arranged along the length direction. On the back surface of the microchannel unit plate, four fluid inlet and outlet grooves are arranged at equal intervals along the width direction. Between the four fluid inlet and outlet grooves, a plurality of reaction grooves are arranged along the length direction of the microchannel unit plate. The front surface of the microchannel unit plate is divided into area A, area B, and area C with the four fluid inlet and outlet grooves as the boundary. The back surface of the microchannel unit plate is divided into area D, area E, and area F with the four fluid inlet and outlet grooves as the boundary. Catalysts can be coated or not coated in areas A to F. The solution provided by the present invention has versatility and can effectively control the reaction process.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and particularly relates to an alcohol microchannel oxidation evaporation reforming heat exchange reactor. Background Art

[0002] The fuel cells of the prior art need to design different reaction devices for catalytic oxidation reaction, reforming reaction and heat exchange respectively. Their functions are single and there is no possibility of sharing or generalization. The existing reforming reactors need evaporation heat exchangers, and the two are separate independent devices without being integrated into one, resulting in a large overall volume and weight.

[0003] In addition, during the reaction process of the reforming reactor, the temperatures in different regions of the reaction process are different and the heat requirements are also different. It is very difficult to control the reaction temperature in this way, which will cause overheated regions or regions with insufficient temperature. By coating the catalyst in zones, the reaction temperature can be effectively controlled and the generation of side reaction products can be reduced. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the main purpose of the present invention is to provide an alcohol microchannel oxidation evaporation reforming heat exchange reactor that integrates an evaporation heat exchanger and a reformer, and the reaction process can be effectively controlled by coating in zones.

[0005] To achieve the above object, the present invention provides the following technical solution: An alcohol microchannel oxidation evaporation reforming heat exchange reactor, comprising a reaction module. The reaction module includes a plurality of stacked plate groups. Each plate group includes two relatively arranged microchannel unit plates. On the front surface of the microchannel unit plate, a plurality of reaction grooves are arranged along the length direction. On the back surface of the microchannel unit plate, four fluid inlet and outlet grooves are arranged at equal intervals along the width direction. A plurality of reaction grooves are arranged between the four fluid inlet and outlet grooves along the length direction of the microchannel unit plate. The front surface of the microchannel unit plate is divided into area A, area B and area C with the four fluid inlet and outlet grooves as the boundary. The back surface of the microchannel unit plate is divided into area D, area E and area F with the four fluid inlet and outlet grooves as the boundary. Catalysts can be coated or not coated in areas A to F. Sealing plates are respectively arranged at the upper and lower ends of the reaction module. A first fluid inlet hood and a first fluid outlet hood are respectively arranged at both ends of the reaction module. Second fluid inlet hoods are arranged on both sides of the reaction module along the three fluid inlet and outlet grooves closest to the first fluid inlet hood. Second fluid outlet hoods are arranged on both sides of the reaction module along the fluid inlet and outlet groove closest to the first fluid outlet hood.

[0006] Preferably, the shapes of the first fluid inlet hood and the first fluid outlet hood are both trumpet-shaped.

[0007] Preferably, the second fluid inlet cover includes a vertically arranged feed pipe, the feed pipe is connected to a U-shaped flow equalizing pipe, the flow equalizing pipe is clamped on two sides of the reaction module, and outlet grooves are arranged on two surfaces of the flow equalizing pipe facing the fluid inlet / outlet groove.

[0008] Preferably, the shape of the second fluid outlet cover is the same as that of the second fluid inlet cover, and the setting direction is opposite.

[0009] Preferably, flow equalizing columns are arranged at both ends of the fluid inlet / outlet groove.

[0010] The present invention has the following advantages compared with the prior art. An alcohol microchannel oxidation evaporation reforming heat exchange reactor of the present solution can become different functional modules under different processing conditions, improving functionality. Through the partition design, the evaporation heat exchanger and the reformer can be integrated into one, and the partition coating can effectively control the reaction process. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of an alcohol microchannel oxidation evaporation reforming heat exchange reactor of the present invention;

[0012] Figure 2 is a structural decomposition diagram of an alcohol microchannel oxidation evaporation reforming heat exchange reactor;

[0013] Figure 3 is a schematic front structural diagram of the microchannel unit plate;

[0014] Figure 4 is a schematic back structural diagram of the microchannel unit plate.

[0015] In the figure: 1. Reaction module; 2. Microchannel unit plate; 3. Reaction tank; 4. Fluid inlet / outlet groove; 5. Sealing plate; 6. First fluid inlet cover; 7. First fluid outlet cover; 8. Second fluid inlet cover; 9. Second fluid outlet cover; 10. Feed pipe; 11. Flow equalizing pipe; 12. Outlet groove; 13. Flow equalizing column. Detailed Embodiments

[0016] The present invention will be further described below with reference to the drawings.

[0017] As Figure 1As shown in the figure, an alcohol microchannel oxidative evaporation reforming heat exchange reactor includes a reaction module 1. The reaction module 1 includes a number of stacked plate groups. Each plate group includes two relatively arranged microchannel unit plates 2. On the front side of the microchannel unit plate 2, a number of reaction grooves 3 are arranged along the length direction. On the back side of the microchannel unit plate 2, four fluid inlet and outlet grooves 4 are arranged at equal intervals along the width direction. A number of reaction grooves 3 are arranged along the length direction of the microchannel unit plate 2 between the four fluid inlet and outlet grooves 4. The front side of the microchannel unit plate 2 is divided into area A, area B and area C with the four fluid inlet and outlet grooves 4 as the boundary. The back side of the microchannel unit plate 2 is divided into area D, area E and area F with the four fluid inlet and outlet grooves 4 as the boundary. Catalysts can be coated or not coated in areas A to F. Sealing plates 5 are respectively arranged at the upper and lower ends of the reaction module 1. A first fluid inlet cover 6 and a first fluid outlet cover 7 are respectively arranged at both ends of the reaction module 1. Second fluid inlet covers 8 are arranged on both sides of the reaction module 1 along the three fluid inlet and outlet grooves 4 closest to the first fluid inlet cover 6. Second fluid outlet covers 9 are arranged on both sides of the reaction module 1 along the fluid inlet and outlet groove 4 closest to the first fluid outlet cover 7.

[0018] Preferably, the shapes of the first fluid inlet cover 6 and the first fluid outlet cover 7 are both trumpet-shaped.

[0019] Preferably, the second fluid inlet cover 8 includes a vertically arranged feed pipe 10. The feed pipe 10 is connected to a U-shaped flow equalizing pipe 11. The flow equalizing pipe 11 is clamped on the two side surfaces of the reaction module 1. Outlet grooves 12 are arranged on the two surfaces of the flow equalizing pipe 11 facing the fluid inlet and outlet grooves 4.

[0020] Preferably, the shape of the second fluid outlet cover 9 is the same as that of the second fluid inlet cover 8, and the setting direction is opposite.

[0021] Preferably, flow equalizing columns 13 are arranged at both ends of the fluid inlet and outlet grooves 4.

[0022] In the alcohol microchannel oxidative evaporation reforming heat exchange reactor of this solution, it can become different functional modules under different treatment conditions, improving the functionality. Through the partition design, the evaporation heat exchanger and the reformer can be integrated into one, and the partition coating can effectively control the reaction process.

[0023] Example 1:

[0024] Alcohol reforming catalysts are coated in areas A / B / C on the front side of the microchannel unit plate 2, and alcohol oxidation catalysts are coated in areas D / E / F on the back side.

[0025] The alcohol-water mixed gas + air enters the reactor from the three second fluid inlet covers 8 and undergoes an exothermic oxidation reaction through the D / E / F channels on the reverse side of the microchannel unit plate 2; the alcohol-water mixed gas enters the reactor from the first fluid inlet cover 6 and undergoes an endothermic reforming reaction through the channels in the A / B / C regions on the front side of the microchannel unit plate 2.

[0026] The heat generated by the exothermic oxidation reaction on the reverse side of the microchannel unit plate 2 is transferred to the front side through the unit plate to maintain the stable and continuous progress of the reforming reaction process on the front side. In this state, the model is a microchannel reforming reactor.

[0027] Example 2:

[0028] The A region on the front side of the microchannel unit plate 2 is not coated with a catalyst, the B / C regions are coated with an alcohol reforming catalyst, and the D / E / F regions on the reverse side are coated with an alcohol oxidation catalyst.

[0029] The alcohol-water mixed gas + air enters the reactor from the three second fluid inlet covers 8 and undergoes an exothermic oxidation reaction through the D / E / F channels on the reverse side of the microchannel unit plate 2; the alcohol-water mixed liquid enters the reactor from the first fluid inlet cover 6, completes evaporation and temperature rise in the A region on the front side of the microchannel unit plate 2, and undergoes an endothermic reforming reaction in the B / C region channels.

[0030] The heat generated by the exothermic oxidation reaction on the reverse side of the microchannel unit plate 2 is transferred to the front side through the unit plate to maintain the stable and continuous progress of the evaporation, heating, and reforming processes on the front side.

[0031] Example 3:

[0032] The A region on the front side of the microchannel unit plate 2 is not coated with a catalyst, the B region is coated with an alcohol reforming catalyst, the C region is not coated with a catalyst, the D / E regions on the reverse side are coated with an alcohol oxidation catalyst, and the F region is not coated with a catalyst.

[0033] The alcohol-water mixed gas + air enters the reactor from the second fluid inlet cover 8 and undergoes an exothermic oxidation reaction through the D / E channels on the reverse side of the microchannel unit plate 2, and air enters the reactor from the second fluid inlet cover 8; the alcohol-water mixed liquid enters the reactor from the first fluid inlet cover 6, completes evaporation and temperature rise in the A region on the front side of the microchannel unit plate 2, undergoes an endothermic reforming reaction in the B region channels, and undergoes temperature reduction in the C region channels. The reverse side of the microchannel unit plate 2 undergoes two-way heat exchange with the front side (first heating up and then cooling down) through the unit plate to maintain the stable and continuous progress of the evaporation, heating, reforming, and cooling processes on the front side.

[0034] Example 4:

[0035] The A / B / C regions on the front side of the microchannel unit plate 2 are not coated with a catalyst, and the D / E / F regions on the reverse side are coated with an alcohol oxidation catalyst.

[0036] The alcohol-water mixed gas + air enters the reactor from the three second fluid inlet covers 8, and undergoes an exothermic oxidation reaction through the D / E / F channels on the reverse side of the microchannel unit plate 2; the alcohol-water mixed liquid enters the reactor from the first fluid inlet cover 6, and completes evaporation and temperature rise through the A area on the front side of the microchannel unit plate 2.

[0037] The heat generated by the exothermic oxidation reaction on the reverse side of the microchannel unit plate 2 is transferred to the front side through the unit plate, maintaining the stable and continuous progress of the evaporation and temperature rise process on the front side.

[0038] Example Five:

[0039] The A / B / C areas on the front side of the microchannel unit plate 2 are not coated with a catalyst, and the D / E / F areas on the reverse side are not coated with a catalyst.

[0040] The hot fluid enters the reactor from the three second fluid inlet covers 8, and the cold fluid enters the reactor from the first fluid inlet cover 6. The hot and cold fluids exchange heat in the reactor to achieve the temperature rise of the cold fluid and the temperature drop of the hot fluid.

[0041] Example Six:

[0042] The A / B / C areas on the front side of the microchannel unit plate 2 are coated with an alcohol reforming catalyst, and the D / E / F areas on the reverse side are not coated with a catalyst.

[0043] The hot fluid enters the reactor from the three second fluid inlet covers 8; the alcohol-water mixed gas enters the reactor from the first fluid inlet cover 6, and undergoes an endothermic reforming reaction through the channels in the A / B / C areas on the front side of the microchannel unit plate 2.

[0044] The hot fluid on the reverse side of the microchannel unit plate 2 transfers heat to the front side through the unit plate, maintaining the stable and continuous progress of the reforming reaction process on the front side.

[0045] Example Seven:

[0046] The A area on the front side of the microchannel unit plate 2 is not coated with a catalyst, the B / C areas are coated with an alcohol reforming catalyst, and the D / E / F areas on the reverse side are not coated with a catalyst.

[0047] The hot fluid enters the reactor from the three second fluid inlet covers 8; the alcohol-water mixed liquid enters the reactor from the first fluid inlet cover 6, evaporates and rises in temperature through the A area on the front side of the microchannel unit plate 2, and undergoes an endothermic reforming reaction in the channels of the B / C areas.

[0048] The hot fluid on the reverse side of the microchannel unit plate 2 transfers heat to the front side through the unit plate, maintaining the stable and continuous progress of the evaporation, temperature rise, and reforming reaction processes on the front side.

[0049] Example Eight:

[0050] On the front side of the microchannel unit plate 2, the A / C area is not coated with a catalyst, and the B area is coated with an alcohol reforming catalyst. On the back side, the D / E / F areas are not coated with a catalyst.

[0051] The hot fluid enters the reactor from the first two second fluid inlet covers 8, and the cold fluid enters the reactor from the third second fluid inlet cover 8; the alcohol-water mixed liquid enters the reactor from the first fluid inlet cover 6, evaporates and heats up in area A on the front side of the microchannel unit plate 2, undergoes an endothermic reforming reaction in the flow channels of area B, and cools down in area C (if heating is required, hot fluid is introduced through the third second fluid inlet cover 8 or a catalyst is coated in area C, and alcohol-water + air is introduced through the third second fluid inlet cover 8).

[0052] On the back side of the microchannel unit plate 2, the hot fluid transfers heat to the front side through the unit plate to maintain the stable and continuous progress of the evaporation, heating, reforming reaction, and cooling processes on the front side.

[0053] Embodiment Nine:

[0054] On the front side of the microchannel unit plate 2, the A / B areas are coated with an alcohol reforming catalyst, and the C area is not coated with a catalyst. On the back side, the D / E / F areas are not coated with a catalyst.

[0055] The hot fluid enters the reactor from the first two second fluid inlet covers 8, and the cold fluid enters the reactor from the third second fluid inlet cover 8; the alcohol-water mixed gas enters the reactor from the first fluid inlet cover 6, undergoes an endothermic reforming reaction in the flow channels of the A / B areas on the front side of the microchannel unit plate 2, and cools down in area C (if heating is required, hot fluid is introduced through the third second fluid inlet cover 8 or a catalyst is coated in area C, and alcohol-water + air is introduced through the third second fluid inlet cover 8).

[0056] On the back side of the microchannel unit plate 2, the hot fluid transfers heat to the front side through the unit plate to maintain the stable and continuous progress of the reforming reaction and cooling process on the front side.

[0057] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. An alcohol microchannel oxidative evaporation reforming heat exchange reactor, characterized in that: It includes a reaction module, and the reaction module includes several superimposed plate groups. Each plate group includes two oppositely arranged microchannel unit plates. On the front of the microchannel unit plate, several reaction grooves are arranged along the length direction. On the back of the microchannel unit plate, four fluid inlet and outlet grooves are arranged at equal intervals along the width direction. Between the four fluid inlet and outlet grooves, several reaction grooves are arranged along the length direction of the microchannel unit plate. The front of the microchannel unit plate is divided into area A, area B, and area C with the four fluid inlet and outlet grooves as the boundary. The back of the microchannel unit plate is divided into area D, area E, and area F with the four fluid inlet and outlet grooves as the boundary. Catalysts can be coated on areas A to F, and the catalyst coating methods for areas A to F are one of the following methods: The alcohol reforming catalyst is coated on areas A / B / C, and the alcohol oxidation catalyst is coated on areas D / E / F; Or no catalyst is coated on area A, the alcohol reforming catalyst is coated on areas B / C, and the alcohol oxidation catalyst is coated on areas D / E / F; Or no catalyst is coated on area A, the alcohol reforming catalyst is coated on area B, no catalyst is coated on area C, the alcohol oxidation catalyst is coated on areas D / E, and no catalyst is coated on area F; Sealing plates are respectively arranged at the upper and lower ends of the reaction module. A first fluid inlet cover and a first fluid outlet cover are respectively arranged at both ends of the reaction module. Second fluid inlet covers are arranged on both sides of the reaction module along the three fluid inlet and outlet grooves closest to the first fluid inlet cover. Second fluid outlet covers are arranged on both sides of the reaction module along the fluid inlet and outlet groove closest to the first fluid outlet cover. The shapes of the first fluid inlet cover and the first fluid outlet cover are both trumpet-shaped, and flow equalizing columns are arranged at both ends of the fluid inlet and outlet grooves.

2. The alcohol microchannel oxidation evaporation reforming heat exchange reactor according to claim 1, characterized in that: The second fluid inlet cover includes a vertically arranged feed pipe, and the feed pipe is connected to a U-shaped flow equalizing pipe. The flow equalizing pipe is clamped on the two side faces of the reaction module, and outlet grooves are arranged on the two faces of the flow equalizing pipe facing the fluid inlet and outlet grooves.

3. The alcohol microchannel oxidative evaporation reforming heat exchange reactor according to claim 2, characterized in that: The shape of the second fluid outlet cover is the same as that of the second fluid inlet cover, but the setting direction is opposite.

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