Minitype light hydrocarbon steam reforming hydrogen manufacturing technique

Abstract

The invention discloses a miniature technique of transforming light hydrocarbon steam into hydrogen. Mixing light hydrocarbon with hydrogen according to the volume ratio of 5-10%, then increasing pressure to 0.5-5.0MPa and temperature to 350-380 DEG C, in this way, the olefin is saturated and the organic sulfur is converted, the olefin content in the raw material is decreased below 1%, the content of sulfur is decreased below 0.2ppm; then the refined gas is mixed with steam according to the water-carbon ratio of 3.0-5.0mol / mol and heated to 450-520 DEG C until transformation reaction happens; reforming gas of 780-860 DEG C goes out of a reborner and then goes into a medium temperature transformation process after being cooled to 340-380 DEG C so as to go on with transformation reaction; the temperature of the medium temperature transformed gas is decreased to 40 DEG C after the recovery of waste heat and the cooling of circulating water; then hydrogen with the purity of 99.9-99.9999%(V) can be produced after the PSA hydrogen purification process. The technique has the advantages of simple process, easily available raw material, low consumption of raw material and production energy, low hydrogen cost and no environmental pollution.

Description

technical field [0001] The present invention relates to a complete set of process equipment and technology for small-scale hydrogen production, and furthermore, to a complete set of process equipment and technology for hydrogen production by steam conversion of light hydrocarbons, with a hydrogen supply capacity of 1500m 3 n / h~100m 3 n / h. Background technique [0002] At present, my country has developed methanol decomposition, ammonia cracking, electrolysis of water and other technologies for hydrogen production devices of this scale, and all of them have been commercialized in China. [0003] Using methanol as raw material, the technology of methanol decomposition to produce hydrogen has been commercialized in China for many years. Judging from the devices that have been put into production, the scale is generally 200-1000m 3 n / h or so. The advantage of this scheme is that the investment is small, but the disadvantage is that the cost of hydrogen is relatively high. Fo...

AI Technical Summary

Problems solved by technology

The disadvantage is that both investment and hydrogen costs are quite high

And its hydrogen cost is greatly affected by the price of electricity

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