JPH0530700U - Chemical reaction vessel - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a chemical reaction vessel having a plate fin type heat exchanger configuration, which is capable of expanding a packed bed volume of an adsorbent, a metal hydride or the like. [Structure] A hydrogen gas header tank 8 and heat medium header tanks 9 and 10 are collectively arranged on the upper surface of a reaction vessel 1, and perforated fins 6 are inserted into a packed bed passage 3 to ensure the inflow and outflow of hydrogen gas. As a result, the actual use area (a × b) occupied by the outer dimensions of the heat exchange container 1 in the packed bed passage 3 increases,
The filling volume of the metal hydride 7 can be greatly expanded.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to the improvement of a chemical reaction vessel that adsorbs and releases gas by filling it with an adsorbent, a metal hydride, etc., and is a header tank for each fluid that is essential in a configuration using a plate fin type heat exchanger. The present invention relates to a chemical reaction container in which the mounting positions are centrally arranged on one end surface to expand the volume of the packed bed occupying the internal volume of the container.

[0002]

[Prior Art]

 To store and supply hydrogen gas, a chemical reaction container that is filled with an adsorbent or metal hydride, and then cooled and heated to adsorb and release the gas is a hydrogen separation device, hydrogen storage and transportation. It is used in equipment, heat pumps, chemical pumps, and air conditioners.

The applicant has previously developed a plate fin as a chemical reaction container having a structure in which the heat conduction capacity of such a chemical reaction container is expanded and the thermal efficiency is improved, and the structure is small and lightweight, and the adsorption and desorption rates of hydrogen gas are remarkably increased. A structure that effectively uses the heat exchanger is proposed (Japanese Utility Model Publication No. 61-26718).

[0004]

[Problems to be solved by the device]

 In an ordinary plate fin type chemical reaction vessel, the reaction vessel 1 is a stack of a packed medium passage filled with an adsorbent or a metal hydride and a reaction gas flowing in and out and a heat medium passage, and a fluid inlet / outlet for the passage. A header tank is provided for collecting and delivering. For example, when the heat medium header tanks 11 and 12 are attached to the upper end surface of the reaction vessel 1 as shown in FIG. 3, the reaction gas header tank 13 of the packed bed passage 3 is located on the side. The reaction gas header tank 14 is disposed on the end face, or on the lower end face of the reaction vessel 1 as shown in FIG.

Generally, the chemical reaction container is limited in outer dimensions because it is housed in a limited space together with other devices depending on the application, and it is necessary to arrange the header tanks on four sides of the container. There was a problem that the volume in the container was reduced by that much, and in particular, the volume of the packed bed of adsorbent and metal hydride was reduced.

An object of the present invention is to provide a chemical reaction vessel having a plate fin type heat exchanger configuration and having a configuration capable of expanding a packed bed volume of an adsorbent, a metal hydride or the like in a chemical reaction vessel.

[0007]

[Means for Solving the Problems]

 This invention is a chemical reaction vessel in which a packed bed passage filled with an adsorbent or a metal hydride and the reaction gas flows in and out and a heat medium passage are stacked, and a header tank is provided at each passage end. Also, each header tank for heat medium is collectively arranged on one end surface of the container, and a perforated fin is used for the fin in the packed bed passage to enable the reaction gas to flow in and out. .

[0008]

[Action]

 This device is a plate in which a reaction medium is adsorbed and discharged by cooling and heating the filling medium such as an adsorbent and a metal hydride in a state where the reaction gas is in contact with the reaction gas. In a chemical reaction vessel with a fin-type heat exchanger, the header tanks for reaction gas and heat medium are collectively arranged on the required one end surface of the vessel to expand the packed bed volume within a limited outer dimension. In order to allow the reaction gas to be introduced into and discharged from the packed bed passage where the reaction gas inlet / outlet is restricted by the heat medium header tank, the fins in the packed bed use perforated fins to secure the movement of the reaction gas. It is characterized by

[0009]

【Example】

 The reaction container 1 shown in FIGS. 1A and 1B has a heat medium passage 2 in which fins 5 are inserted between the tube plates 4 and 4 and closed on three sides by spacer bars, and a perforated fin 6 is inserted in the passage. The metal hydride 7 and the spacers are closed on three sides by the spacers, and the channels 3 are alternately stacked.

The heat medium to the heat medium passage 2 flows in and out by the heat medium header tanks 9 and 10 provided at both ends of the upper surface of the reaction vessel 1. A filter (not shown) is arranged at the upper end of the packed bed passage 3, and a hydrogen gas header tank 8 is arranged between the heat medium header tanks 9 and 10 on the upper surface of the reaction vessel 1. The filling port for the metal hydride 7 is provided on the lower surface of the reaction vessel 1 and is closed with a plate after filling.

Since the hydrogen gas header tank 8 and the heat medium header tanks 9 and 10 are collectively arranged on the upper surface of the reaction container 1, the upper end surface of the packed bed passage 3 at the position of the heat medium header tanks 9 and 10 is hydrogen gas. However, since the perforated fins 6 are inserted with the gas flow direction up and down in the figure, the hydrogen gas flows freely not only in the vertical direction but also in the horizontal direction. Inflow and outflow are secured.

The chemical reaction vessels shown in FIGS. 2A and 2B have the same structure as the chemical reaction vessel of FIG. 1 described above, but the wave directions of the perforated fins 6 in the packed bed passage 3 are different, Since the perforated fins 6 are inserted into the passage with the gas flow direction left and right in the figure, the filling port for the metal hydride 7 is on the side surface of the reaction vessel 1, and the hydrogen gas is of course left and right as well as up and down. It also flows freely in any direction, ensuring inflow and outflow of hydrogen gas.

1 and 2, the hydrogen gas header tank 8 and the heat medium header tanks 9 and 10 are collectively arranged on the upper surface of the reaction vessel 1 according to the insertion direction of the perforated fins 6. Since the filling port is provided on the lower surface or the side surface of the reaction container 1, the layout of the piping can be simplified, and the actual use area (a × b) of the outer dimension of the reaction container 1 of the packed bed passage 3 is increased, The filling volume of the metal hydride 7 can be greatly expanded.

[0014]

[Effects of the Invention] In this invention, the plate fin type heat exchanger is used as shown in the embodiment, and the mounting positions of the header tanks for each indispensable fluid are collectively arranged on one end surface of the heat exchange container and filled. Since the perforated fins are inserted in the layer passage to ensure the free inflow and outflow of the reaction gas, the volume of the packed bed occupying the inner volume of the container can be increased. In addition, by consolidating the header tank on one end, there is an advantage that the piping can be simplified.

[Brief description of drawings]

FIG. 1A is a vertical cross-sectional explanatory view of a packed bed passage portion of a chemical reaction container according to the present invention, and B is a cross-sectional explanatory view of the passage portion.

FIG. 2A is a vertical cross-sectional explanatory view of a packed bed passage portion of another chemical reaction container according to the present invention, and B is a cross-sectional explanatory view of the passage portion.

FIG. 3 is a vertical cross-sectional explanatory view of a packed bed passage portion showing the configuration of a conventional chemical reaction container.

FIG. 4 is a vertical cross-sectional explanatory view of a packed bed passage portion showing the configuration of another conventional chemical reaction container.

[Explanation of symbols]

 1 Reaction Vessel 2 Heat Medium Passage 3 Packed Bed Passage 4 Tube Plate 5 Fin 6 Perforated Fin 7 Metal Hydride 8,13,14 Reactant Gas Header Tank 9,10,11,12 Heat Medium Header Tank

Claims (1)

[Scope of utility model registration request] 1. A chemical reaction container in which a packed bed passage for adsorbing an adsorbent, a metal hydride or the like and a reaction gas flow in and out and a heat medium passage are stacked, and a header tank is provided at each passage end. And a header tank for a heat medium are collectively arranged on one end surface of the container, and a perforated fin is used as a fin in the packed bed passage to allow a reaction gas to flow in and out.