Hydrogen generation process and system in float glass manufacturing
A float glass and glass manufacturing technology, applied in hydrogen, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as not being a good hydrogen solution, achieve considerable economic and social benefits, low cost, and environmentally friendly production process Effect
Active Publication Date: 2012-08-15
XINYI ELECTRONICS GLASS WUHU
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Problems solved by technology
Especially for large-scale glass enterprises, it is obviously not a good hydrogen solution to use water electrolysis to produce hydrogen
Method used
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[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0014] Please combine figure 2 refer to figure 1 , the hydrogen production process that is used in the manufacture of float glass of the embodiment of the present invention, the prepared hydrogen is used as the shielding gas in glass manufacture, and described process comprises the following steps:
[0015] S10, desulfurization: desulfurize the raw natural gas;
[0016] S20, conversion: the desulfurized natural gas is mixed and preheated according to a predetermined water-to-carbon ratio and steam, and then introduced into the reformer 30, and under the action of a reforming catalyst, a reformin...
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The invention relates to a hydrogen generation process and a system in float glass manufacturing, wherein the process comprises the following steps: performing desulphurization processing on raw material natural gas; mixing the desulphurized natural gas with water vapor according to a preset water / carbon ratio and preheating, then guiding the mixture in a reformer and performing conversion reaction under the action of a catalyst so as to generate converted gas mainly containing hydrogen; conveying the converted gas in a transformation tower and performing exchange reaction between the carbon monoxide in the converted gas and the water vapor to obtain a transformed gas; cooling and dewatering the transformed gas, then guiding the transformed gas in a variable pressure adsorption device and performing variable pressure adsorption, wherein the variable pressure adsorption device comprises 6 variable pressure adsorption beds, and the variable pressure adsorption process is as follows: adsorption, progressive decompression desorption, progressive boosting and adsorption, the process is repeated to continuously obtain hydrogen and recycle an adsorption bed. The process and system have are low in cost and meet the current demands of energy conservation and environmental protection, so that the process and system can be used for preparing shielding gas in glass manufacture.
Description
technical field [0001] The invention belongs to the field of glass manufacturing, and in particular relates to a hydrogen production process and system used in the manufacture of float glass. Background technique [0002] To manufacture float glass with excellent performance, in addition to the premise of good melting of the molten glass itself, a bright and clean surface of the tin liquid is also a necessary condition. Tin is easily oxidized at high temperatures, which can contaminate the glass surface and cause defects. At present, the mixed gas of nitrogen and hydrogen is generally used as the tin bath protective gas at home and abroad, and the hydrogen production adopts different production processes, and the cost varies greatly. In the past, float glass companies mostly used water electrolysis to produce hydrogen. With the increase in electricity prices year by year, the cost of hydrogen production has risen. In recent years, the float glass industry has generally adop...
Claims
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Inventor 董清世吴亚丽李幼文刘金宇
Owner XINYI ELECTRONICS GLASS WUHU