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Hydrogen generation device, method for separating solid product, and system for discharging/collecting solid product

A technology for generating devices and products, applied in separation methods, chemical methods for reacting gases with non-granular solids, separation of dispersed particles, etc., can solve the problem of increased maintenance costs, unsuitable for on-site stations, and difficulty in determining or controlling coexisting gases appropriately. Concentration range and other issues, to achieve the effect of easy separation

Active Publication Date: 2020-11-24
IHARA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the former method, since the appropriate concentration range of the coexisting gas depends on various factors, it is difficult to determine or control the appropriate concentration range of the coexisting gas, and in order to realize the latter method, the apparatus will become large-scale, not only It is not suitable for on-site stations, etc., and there is still room for discussion on the specific device structure of the catalyst separation device
In addition, maintenance costs increase significantly due to the power required to continuously operate catalyst separation devices such as cyclones

Method used

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  • Hydrogen generation device, method for separating solid product, and system for discharging/collecting solid product
  • Hydrogen generation device, method for separating solid product, and system for discharging/collecting solid product
  • Hydrogen generation device, method for separating solid product, and system for discharging/collecting solid product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] (Example 1-Development of hydrogen generation device trial production machine T7 and 2-day non-catalyst heating test)

[0110] In addition to unconfigured catalysts with figure 1 The hydrogen generation device shown has the same configuration. While methane is introduced into the cylindrical furnace at a pressure of 0.14 MPa and a flow rate of 3.0 L / min, the temperature of the device is increased. The periphery of the cylindrical furnace is covered with a heater to heat The periphery of the vessel is covered with a cylindrical heat insulating material made of ceramics, and the volume of the reaction zone of the cylindrical furnace is about 30L. figure 2 The thermocouples 1-A-2, 1-A-6 shown in the two positions continuously measure the temperature, and at the same time, the gas conduction type gas analyzer 1-A-10 (product number KD-12C-T1, zero Gas: clean air 100%, span gas: hydrogen 100%, zero point not adjusted, manufactured by Shinkosmos Electronics Co., Ltd., Japan...

Embodiment 2

[0125] (Example 2 - temperature rise test using nickel porous body)

[0126] A temperature raising experiment was performed under the same conditions as in Example 1 except for using the hydrogen generator T7 provided with a nickel porous body along the inner wall of the reaction furnace. After bringing the temperature of the heater to about 960°C over 4 hours from the start of the experiment, it was lowered to about 870°C and held for 2 hours, and kept at about 800°C for 3 hours. In addition, the reason why the hydrogen concentration is almost 0 at the very initial time is as follows: The generated gas is discharged to the atmosphere, and until the temperature of the reaction furnace rises to a certain level, only methane is discharged to the atmosphere, and the valve for atmospheric discharge is closed. The results are shown in Figure 4 .

[0127] Such as Figure 4As shown, compared with the conventional nickel particle loading method in order to increase the exposed sur...

Embodiment 3

[0128] (Example 3-use continuous temperature rise experiment 3 of nickel permalloy)

[0129] Using nickel permalloy (Permalloy B, YFN-45-R, manufactured by Dowa Metal Co., Ltd.), a temperature rise experiment was performed under the same conditions as in Example 2. As a result, compared with the case of using a nickel porous body, although the hydrogen concentration at the heater temperature up to around 825°C or the stability at the heater temperature of 950°C (catalyst surface temperature of 900°C) was slightly inferior, but if Figure 11 As shown, continuous operation at 800°C for up to 16 days was confirmed.

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Abstract

The present invention provides a device and a system both of which are suitable for the continuous and stable production of hydrogen utilizing a direct decomposition reaction of a hydrocarbon; and a method for separating a solid product. A discharging / collecting system 101 equipped with: a decompression chamber 13 which is communicated with a hydrogen generation device 1 in which a nickel-based metal structure 9 is utilized for a direct decomposition reaction of a hydrocarbon and with a reaction vessel lower opening 12 in the hydrogen generation device 1 through a vent pore 14; a first opening / closing valve 17 which can open and close the vent pore 14; a collection box 18 which is communicated with the decompression chamber 13 through a channel 16; a second opening / closing valve 19 which can open and close the decompression chamber 13; and a decompression pump 15 which is communicated with the collection box 18.

Description

technical field [0001] The invention relates to a hydrogen generating device, a method for separating solid products, and a system for discharging and recovering solid products. Background technique [0002] Conventionally, nickel is known as a catalyst metal for producing hydrogen by direct decomposition of methane, and in order to prevent aggregation caused by sintering of nickel particles during the high-temperature reaction of direct decomposition of methane, it has been proposed to support nickel particles on two surfaces. A proposal on silica (Patent Document 1, Non-Patent Document 1), a proposal to support nickel fine particles on zeolite (Patent Document 2, Patent Document 3), a proposal to support nickel fine particles on titanium dioxide (Patent Document 4), A proposal in which carbon particles are inserted between nickel particles without using a carrier (Patent Document 5) and the like. [0003] However, in the case of using the supported method, there is a prob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/26B01J37/00B01J37/02H01M8/0612H01M8/0662H01M8/10H01M8/12B01J25/02
CPCC01B3/26B01J23/755B01J25/02C01B2203/0277C01B2203/1058B01D45/18Y02E60/36B01J35/23B01J35/56B01J35/58B01J15/005
Inventor 伊原良硕天野裕之铃田勇治
Owner IHARA CO LTD