JP3098467B2 - Heat exchange type reactor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange reactor in which an absorbent having a property of absorbing a specific component is contained in a container and the absorbent is maintained at a temperature suitable for a chemical reaction. More specifically, an absorbent capable of absorbing a specific component is stored in a container, and either the mixed gas or the mixed solution is sent into the container to absorb the specific component in the mixed gas or the mixed solution. Use to absorb and absorb the desired gas or liquid from the container, or store the absorbent that has already absorbed the specific component in the container, separate the specific component from the absorbent, and absorb it It is used for recovering the absorbent in a particular state and its specific components.

[0002]

2. Description of the Related Art The heat exchange reactors for the above two uses have different structures but little difference in structure, and the structure of the former used for the former purpose is described below as an example. I do. As shown in FIG. 7, the conventional heat exchange type reactor includes a heat exchanger 83 in a container 82 containing an absorbent 81, and a heat exchanger for maintaining the absorbent at a temperature suitable for a chemical reaction. A circulation device 84 is connected to the heat exchanger for circulation in the heat exchanger, and the heat exchanger further includes a heat medium storage chamber 86 outside a pair of opposed wall surfaces of the peripheral wall 85 of the container. A number of pipes p between the storage chambers
A large number of pipes were arranged regularly at equal intervals in the vertical and horizontal directions (see FIGS. 8 and 9), and the heat from the heat medium was transmitted to the absorbent via the pipes. Reference numeral 87 denotes an outlet of a desired gas or liquid, and reference numeral 8 denotes
Reference numeral 8 denotes an inlet for an absorbent, reference numeral 89 denotes an inlet for a mixed gas or a liquid mixture, reference numeral 90 denotes an outlet for an absorbent, reference numeral 91 denotes a pipeline, reference numeral 92 denotes an inlet for a heat medium, and reference numeral 93 denotes an inlet for a heat medium. Exit.

[0003] Further, this heat exchange type reactor uses a method in which after the chemical reaction of all the absorbents contained in the container is completed, the absorbent in the container is replaced and the chemical reaction is performed again. Of the absorbent contained in the container, the part that has already undergone a chemical reaction is dropped from the bottom of the container and discharged, and the amount of chemically reactive absorbent supplied from the top of the container is the same as the amount discharged. is there.

[0004]

By the way, heat tends to be transmitted upward in the case of hot air and downward in the case of cold air. In the conventional heat exchange reactor, the pipes that transmit heat to the absorbent are arranged so as to overlap each other at equal intervals in the vertical and horizontal directions, so that the space between the pipes in the horizontal direction As shown in FIG. 8, the part communicates from the upper part to the lower part of the container. Due to the above-mentioned nature of heat, heat is hardly transmitted to the absorbent contained in this part and is suitable for chemical reaction. However, there is a problem that it takes time until the temperature reaches the above-mentioned temperature, which is a problem common to the above two types of use.

[0005] In particular, in the case of the latter use method, most of the absorbent contained in the space between the pipes falls without hitting the pipes. And the heat was more difficult to transmit.

[0006] The present invention has been made in view of the above circumstances, and an object of the present invention is to make it easier to conduct heat to an absorbent, so that a heat exchange reactor capable of efficiently performing a chemical reaction. It is to provide.

[0007]

According to the present invention, a heat medium for holding an absorbent having a property of absorbing a specific component in a container and maintaining the absorbent at a temperature suitable for a chemical reaction is contained in the container. Circulates through the heat exchanger equipped with the reactor, reacts the absorbent, drops the reacted absorbent from the bottom of the container and discharges it, and sends the same amount of unreacted absorbent to the top of the container. In the heat exchange type reactor supplied from
A storage chamber for the heat medium is provided outside each of a pair of opposed wall surfaces in the peripheral wall of the container, and a pipe group formed by arranging pipes in parallel at intervals in the horizontal direction between the opposed storage chambers. It is installed in a state of communicating with each other, and the lower pipe group with respect to the upper pipe group arranges each pipe constituting the lower pipe group below the separation interval of each pipe constituting the upper pipe group. The distance between the pipes constituting the two pipe groups and the distance between the pipes constituting the two pipe groups are separated by at least the size of the absorbent, and the distance between the pipes is set to be equal to or less than the diameter of the pipe . The term "reacted absorbent" as used herein means, in the case of a chemical reaction in which the absorbent absorbs a specific component in a mixed gas or a mixed solution, the absorbent having already absorbed the specific component. In the case of a chemical reaction that separates a specific component, the term means an absorbent capable of absorbing the specific component again. In the case of a chemical reaction in which the absorbent absorbs a specific component in a mixed gas or a mixed solution, an unreacted absorbent means an absorbent in a state capable of absorbing the specific component. In the case of a chemical reaction that separates components, it means an absorbent that has already absorbed a specific component.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The heat exchange type reactor according to the present invention is used for obtaining a desired gas or liquid by absorbing a specific component of either a mixed gas or a mixed solution onto an absorbent.
Alternatively, the specific component can be separated from the absorbent absorbing the specific component, and used for the purpose of recovering the absorbent and the specific component, respectively, and thereafter used for the purpose of obtaining the desired gas in the former. What is done will be described.

In the first embodiment, as shown in FIG. 1, an absorbent 1 having a property of absorbing a specific component, a container 2 containing the absorbent 1, a heat exchanger 3 provided in the container 2, The heat exchanger 3 includes a circulator 4 connected to the heat exchanger 3 in order to circulate a heat medium in the exchanger 3, and has a characteristic in the structure of the heat exchanger 3.

As shown in FIG. 2, the peripheral wall 5 of the container 2 is formed in a rectangular prism shape. The container 2 is used in a vacuum state by depressurizing the inside thereof. As shown in FIG. 1, the container 2 is provided with a desired gas outlet 6 and an absorbent inlet 7 at an upper portion thereof, and a mixed gas inlet 8 at a lower portion thereof. And an outlet 9 for the absorbent. In addition, the inlet 7 and the outlet 9
Is normally kept closed.

The heat exchanger 3 circulates a heat medium inside,
This is for maintaining the absorbent 1 at a temperature suitable for the absorption reaction by exchanging heat between the heat medium and the absorbent 1.
As shown in FIG. 3, outside the front, rear, left and right wall surfaces constituting the peripheral wall 5 of the container 2, storage chambers 11 for the heat medium are separately provided, and between the storage chambers 11 facing each other in the front-rear direction. A pipe group 12 is erected between the storage chambers 11 opposed to each other in the left-right direction, and a pipe group 12 laid in the front-rear direction and a pipe group 12 laid in the left-right direction are alternately spaced apart in the vertical direction. It is provided in.

The pipe group 12 is formed by arranging the pipes P side by side at intervals in the horizontal direction in order to dispose the absorbent 1 around the pipes P. Each pipe P communicates with the storage chamber 11. It is provided in the state where it does. As shown in FIG. 1, each storage chamber 11 is connected to the circulator 4 by a pipe 13, and the heat medium is sent from the circulator 4 to, for example, the left and front storage chambers 11, from which each pipe is connected. Flow into group 12, pipe group 1
The heat medium flowing out of the storage chamber 2 is stored in the storage chambers 11 on the right and rear sides and then returned to the circulator 4. Reference numeral 14 denotes an inlet for the heat medium, and reference numeral 15 denotes an outlet for the heat medium.

The circulator 4 supplies a heat medium to the heat exchanger 3 so that the absorbent 1 has a temperature at which a chemical reaction is easily performed.
It takes in the heat medium discharged from the heat exchanger 3.

The heat medium is a gas or a liquid, and the heat is transferred to the absorbent 1 through the heat exchanger 3 to maintain the absorbent at a temperature suitable for a chemical reaction.

For absorbing carbon dioxide, for example, zeolite, bentonite, or oyadite is used as the absorbent 1.

The first embodiment is compared with a conventional heat exchange reactor. Since heat is most easily transmitted downward in the case of cold air and upward in the case of hot air, when the inside of the container 2 not containing the absorbent 1 is viewed in a plane, the larger the area in which the pipe P can be seen, the greater the heat Will be transmitted efficiently in the vertical direction,
In the conventional product shown in FIG. 8 and the first embodiment shown in FIG. 3,
Obviously, in the first embodiment, the visible area of the pipe P is larger. Therefore, the first embodiment can transmit heat more efficiently than the conventional product. Further, in the first embodiment, the entire wall surface of the peripheral wall 5 is covered with the storage chamber 11, whereas the conventional one has only one set of opposed wall surfaces of the peripheral wall 5 covered with the storage chamber 11, In one embodiment, the area of the peripheral wall 5 covered with the storage chamber 11 is larger than that of the conventional one, and thus heat can be efficiently transmitted to the absorbent 1 located near each wall.

The first embodiment has a structure in which a group of pipes 12 laid in the front-rear direction and a group of pipes 12 laid in the left-right direction are alternately provided at intervals in the vertical direction.
This is an ideal arrangement in order to make the absorbent 1 in the container 2 a uniform temperature when the pipe group 12 provided in each direction is provided in multiple layers. Even with a structure in which only one pipe group 12 is provided and the pipe group 12 laid in the left-right direction is provided in multiple layers, heat can be transmitted more efficiently than conventional products.

In the second embodiment of the heat exchange type reactor according to the present invention, as shown in FIG. 6, the peripheral wall 5 of the container 2 is formed into a regular hexagonal rectangular tube, and the outer wall of each wall constituting the peripheral wall 5 is formed. , Storage chambers 11 are provided respectively, whereby the storage chambers 11 and
11 are formed, three pipe groups 12 are respectively erected between the three opposite storage chambers 11, 11, and a pipe group 12 erected in each direction (a pipe erected from the southeast direction to the northwest direction in the drawing). Group 12, pipe group 12 erected from northeast to southwest, and pipe group 12) erected from east to west,
They are arranged in order at intervals in the vertical direction.

The second embodiment is compared with a conventional heat exchange reactor. When the peripheral wall 5 of the container 2 is formed in the shape of a regular hexagonal prism, the pipe group 12 is not provided in only one direction as in the related art (not shown), but in three directions as in the second embodiment. When the inside of the container 2 containing no absorbent 1 is viewed in a plan view, the pipe group 12 is erected, so that the visible area of the pipe P is large, so that the heat from the pipe P is efficiently transmitted to the absorbent 1. Can be

In the first embodiment, the pipe groups 12 erected in each direction are arranged in order in the vertical direction with an interval therebetween.
Is provided in multiple layers, it is an ideal arrangement method to make the temperature of the absorbent 1 in the container 2 uniform, for example, only one pipe group 12 erected from the southeast direction to the northwest direction. Even in a structure in which the pipe group 12 erected from the northeast direction to the southwest direction and the pipe group 12 erected in the east-west direction are provided in multiple layers, heat can be transmitted more efficiently than conventional products.

In the first embodiment and the second embodiment, after the chemical reaction of all the absorbents 1 stored in the container 2 is completed, the absorbents 1 in the container 2 are replaced, and A method of performing a chemical reaction and, of the absorbent 1 contained in the container 2, an amount of the chemical reaction that has already been completed is dropped from the bottom of the container 2 and discharged. The same method can be applied to both of the usage modes of the usage mode of supplying from the upper part of the container 2. Also in this case, since the amount of the absorbent 1 that falls in a straight line is reduced as compared with the related art, heat can be evenly transmitted to the absorbent 1 in the container 2.

Finally, a third embodiment of the heat exchange reactor of the present invention will be described. In this method, the gas-absorbed absorbent 1 is naturally dropped and discharged from the outlet 9 of the container 2 before the absorbent 1 in the container 2 is completely saturated while the gas absorption reaction of the absorbent 1 is performed. At the same time, it is used only in a usage method in which the same amount of gas-absorbed absorbent 1 is discharged from the inlet 7 of the container 2 as the discharged amount. The temperature is maintained at a temperature suitable for the reaction. The discharging and charging of the absorbent 1 are performed intermittently or continuously.

As shown in FIG. 4, the peripheral wall 5 of the container 2 is formed in a rectangular prism shape. Further, the heat exchanger 3 has storage chambers 11 provided outside the front and rear walls constituting the peripheral wall 5 respectively, and a plurality of pipe groups 12 arranged at intervals in the vertical direction between the storage chambers 11 facing each other. It is erected (see FIG. 5). The lower pipe group 12 is different from the upper pipe group 12 in that each pipe P forming the lower pipe group 12 is replaced with each pipe P forming the upper pipe group 12.
Are disposed below the separation interval W, and the separation interval W and
The distance X between the pipes constituting the upper and lower pipe groups 12 is separated by at least the size of the absorbent 1,
The absorbent 1 is allowed to pass between the pipes.

When the upper limit of the separation W is set to be equal to or less than the diameter of the pipe P, the absorbent 1 disposed within the range of the separation W
All fall toward the pipe P below the separation W, and as a result, the absorbent 1 in the container 2 can be ideally stirred.

In the case where each of the above-described embodiments is used for separating the specific component from the absorbent 1 absorbing the specific component and recovering the absorbent 1 and the specific component, the container 2 is used. No mixed gas inlet is required.

The heat exchange reactor of the present invention is not limited to the above embodiment. For example, in FIG. 1, the gas is circulated vertically to the absorbent 1 in the container 2, but the gas may be circulated horizontally to the absorbent 1 in the container 2. good. When the above-described embodiment is used for obtaining a desired liquid from the mixed liquid, a material that absorbs a specific component in the mixed liquid is selected as the material of the absorbent 1, and the mixed gas inlet 8 is used. The mixed liquid is sent into the container 2 and a desired liquid is taken out from a desired gas outlet 6.

[0027]

The heat exchange type reactor according to the first aspect of the present invention uses a method in which the reacted absorbent is dropped from the bottom of the vessel and discharged, and the distance between the pipes is adjusted by the use of the absorbent. Since the separation is larger than the size, the absorbent can pass between the pipes, and further, each pipe constituting the lower pipe group is disposed below the separation interval of each pipe constituting the upper pipe group. The separation distance should be smaller than the pipe diameter.
So, the absorbent arranged within the range of this separation interval,
All fall and meander toward the pipe below the separation interval
And thereby agitated absorbent naturally ideally in the container, since it easily heat is conducted from the pipe absorber, comprising a chemical reaction to allow efficient.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a schematic structure of a first embodiment of a heat exchange reactor of the present invention.

FIG. 2 is a perspective view showing the structure of the container of the first embodiment.

FIG. 3 is a cross-sectional view of the container showing the arrangement of pipes according to the first embodiment.

FIG. 4 is a cross-sectional view of the container of the third embodiment of the heat exchange reactor.

FIG. 5 is a longitudinal sectional view of a container showing an arrangement state of pipes according to a third embodiment.

FIG. 6 is a cross-sectional view of a main part of a container showing how pipes are arranged in a second embodiment of the heat exchange reactor.

FIG. 7 is a sectional view of a main part showing a schematic structure of a conventional heat exchange type reactor.

FIG. 8 is a cross-sectional view of a vessel showing an arrangement of pipes of a conventional heat exchange reactor.

FIG. 9 is a partial front view of a container showing an arrangement of pipes of a conventional heat exchange reactor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Absorbent 2 Container 3 Heat exchanger 11 Storage room 12 Pipe group P Pipe W Separation distance X Distance

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F28D 7/16 B01J 8/06 B01J 19/00

Claims (1)

(57) [Claims] 1. A heat medium for storing an absorbent (1) having a property of absorbing a specific component in a container (2) and maintaining the absorbent (1) at a temperature suitable for a chemical reaction. The reacted absorbent (1) is dropped from the bottom of the container (2) while flowing through the heat exchanger (3) provided in the container (2) and performing a chemical reaction of the absorbent (1). In a heat exchange reactor that discharges and supplies the same amount of unreacted absorbent (1) as the discharged amount from the upper part of the vessel (2), the heat exchanger (3) includes a peripheral wall ( The storage medium (11) for the heat medium is provided outside the pair of opposed wall surfaces in 5), and between the opposed storage chambers (11, 11),
A pipe group (12) in which pipes (P) are arranged side by side at intervals in the horizontal direction is erected in a state of communicating with the storage chamber (11), and a lower pipe group (12) is provided with respect to an upper pipe group (12). The pipe group (12) arranges each pipe (P) constituting the lower pipe group (12) below the separation interval (W) of each pipe (P) constituting the upper pipe group (12). The separation distance (W) and the distance (X) between the pipes constituting both pipe groups are separated by at least the size of the absorbent ,
A heat exchange type reactor, wherein the separation interval (W) is smaller than the diameter of the pipe (P) .