Method for producing high-purity hydrogen from methanol and water
A methanol and hydrogen technology, applied in chemical instruments and methods, hydrogen/synthesis gas production, hydrogen and other directions, can solve the problems of small size of generators, slow generator development, and difficulty in achieving high-efficiency and mass production of high-purity hydrogen, etc. The effect of reducing requirements and costs
Active Publication Date: 2019-05-03
德州新动能铁塔发电有限公司
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Problems solved by technology
However, the development of generators fueled by methanol water is slow, mainly because the generators are small in size and the required hydrogen requires higher purity hydrogen, while the hydrogen produced by reforming methanol water contains carbon dioxide and very little methane And carbon monoxide, the presence of these components has a serious impact on fuel cells, and the current purification methods are difficult to meet the requirements of high-efficiency mass production of high-purity hydrogen for fuel cells
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[0070] The hydrogen production method of the present invention will be described below by taking a small water-hydrogen generator for mobile power supply as an example. The water hydrogen generator for mobile power supply includes a raw material liquid storage room, a gasification system, a reforming room, a purification membrane and a power generation module.
[0071] 1. Raw material liquid preheating process
[0072] Methanol and desalted water are mixed in proportion (so that the water-alcohol ratio is 1.65) and pre-stored in the raw material liquid storage room, and pumped into the gasification system for gasification to obtain steam as required.
[0073] Methanol meets the requirements of the national standard GB338-92 first-class product standard. The use of recovered methanol is strictly prohibited.
[0074] Desalted water: meet the national GB12145-89P (direct current furnace) requirements, and the chloride ion content is less than or equal to 3ppm.
[0075] The flo...
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Abstract
The invention discloses a method for preparing high-purity hydrogen from methanol and water. The method comprises the following steps: gasifying a mixture of methanol and water at first temperature of120 to 140 DEG C to obtain steam; heating the steam to second temperature of 150 to 350 DEG C, performing reforming transformation at the second temperature under the action of a catalyst to obtain reformed gas; purifying the reformed gas through a purification film at third temperature of 200 to 350 DEG C, thus obtaining the high-purity hydrogen. The method disclosed by the invention can realizereforming at relatively low temperature, and does not need to perform the heating operation on the reformed gas; meanwhile, the method disclosed by the invention can further obtain the hydrogen at higher purity, for example, hydrogen at high purity of 99.99 percent or above.
Description
technical field [0001] The invention relates to the field of hydrogen preparation, in particular to a method for preparing hydrogen from methanol and water in a water-hydrogen generator. Background technique [0002] The water-hydrogen generator uses methanol water as fuel to reform and convert it into hydrogen, and then feeds it into a fuel cell for electrochemical reaction, directly converting chemical energy into electrical energy, with higher energy conversion efficiency, and only discharges water and a small amount of carbon dioxide, realizing a real Environmental friendly. It effectively solves the problem of "difficult storage and transportation and high cost" of hydrogen energy. Compared with traditional gasoline / diesel generators, it has the advantages of high efficiency, stable and continuous power generation, no pollution, green environmental protection, zero noise pollution, maintenance-free, and low operating costs. Therefore, the study of generators fueled by...
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IPC IPC(8): C01B3/32C01B3/56
CPCC01B3/326C01B3/505C01B2203/066C01B2203/1076C01B2203/1223
Inventor戚玉欣陶志国党志东
Owner德州新动能铁塔发电有限公司