Hydrogen generator and process for producing hydrogen
A hydrogen preparation and hydrogen gas technology, applied in chemical instruments and methods, hydrogen, hydrogen separation, etc., can solve problems such as difficulty in setting optimal conditions
Inactive Publication Date: 2009-04-01
MITSUBISHI GAS CHEM CO INC
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Problems solved by technology
Therefore, when an autothermal reforming reaction or a partial oxidation reaction is combined with a hydrogen permeation membrane made of a palladium alloy, it is difficult to set optimal conditions for the reaction and hydrogen permeation
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[0034] The present invention will be described in more detail below with reference to the drawings, but the present invention is not limited to the following description.
[0035] figure 1 An example of the hydrogen production apparatus of the present invention is shown. exist figure 1 In , a mixture of methanol and water (steam or water mist) is supplied from conduit 1 to the device. An oxygen-containing gas such as air is supplied to the device from a conduit 2 . The supply amount of oxygen is controlled by the flow regulator 3 . Methanol and water supplied to the device are mixed with oxygen downstream of the supply port, and contact the autothermal reforming catalyst layer 4 in a mixed state. In this catalyst layer, an autothermal reforming reaction proceeds to generate a hydrogen-containing gas (reformed gas). The hydrogen-containing gas is in contact with the hydrogen permeable membrane 7 along with the heat generated by the autothermal reforming reaction, so that h...
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Abstract
A hydrogen generating apparatus composed of an autothermal-reforming catalyst layer, a conduit pipe for feeding a mixture of methanol and steam, a conduit pipe for feeding oxygen equipped with a flow regulator, and a hydrogen-permeable membrane disposed downstream of the autothermal-reforming catalyst layer. The hydrogen generating apparatus is equipped with a temperature-measuring device for measuring the temperature of the hydrogen-containing gas discharged from the autothermal-reforming catalyst layer. The amount of oxygen to be fed to the autothermal-reforming catalyst layer is increased or decreased by the flow regulator according to the measured temperature of the hydrogen containing gas. Thus, the heat generation by the autothermal reforming is controlled and the temperature of the hydrogen containing gas is regulated within a limited range so as to maintain the hydrogen separation step at an optimum temperature. With the hydrogen generating apparatus, the heat generated by the autothermal reforming reaction is effectively utilized in the hydrogen separation step without needing an additional means.
Description
technical field [0001] The present invention relates to a hydrogen production device and a hydrogen production method for producing hydrogen by autothermal reforming reaction of methanol and hydrogen separation using a hydrogen permeable membrane made of a palladium alloy. Hydrogen is widely used in the chemical industry, metallurgical industry, and semiconductor industry such as ammonia synthesis, hydrogenation of various organic compounds, petroleum refining, and desulfurization. In addition, the recent development of fuel cell technology is also expected to obtain new energy, and the demand for hydrogen is increasing. Background technique [0002] Conventionally, widely used methods for producing hydrogen include, for example, steam reforming of hydrocarbons such as liquefied petroleum gas (LPG), natural gas, and naphtha. Since this method usually requires desulfurization of raw material hydrocarbons, a very high reaction temperature of 800-1000° C., and high equipment c...
Claims
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IPC IPC(8): C01B3/32H01M8/06C01B3/56
CPCC01B2203/0475C01B2203/142C01B2203/041C01B3/323C01B2203/169Y02E60/50C01B3/501C01B3/382H01M8/0631C01B2203/1223C01B2203/066H01M8/0618C01B3/505C01B2203/0811C01B2203/1619C01B2203/0244C01B2203/82Y02E60/36C01B2203/0405C01B2203/047C01B3/32C01B3/56H01M8/06
Inventor 高村光喜岡田英二生驹太志安藤智文
Owner MITSUBISHI GAS CHEM CO INC