Hydrogen production with natural gas has the advantages of low cost and scale effect. The research and development of more advanced new process technology for hydrogen production from natural gas is an important guarantee to solve the problem of cheap hydrogen source. As a high-quality and clean industrial energy, natural gas has an important strategic raw material in the process of China’s energy development. At the same time, it is also the basic raw material of many chemical secondary products.
As a secondary chemical product, hydrogen is widely used in pharmaceutical, fine chemical, electronic and electrical industries. In particular, hydrogen, as the preferred fuel for fuel cells, will have broad market prospects in the field of transportation and power generation in the future and will occupy a more and more important position in the future energy structure. Traditional hydrogen production methods, such as light hydrocarbon steam conversion, water electrolysis, methanol cracking, coal gasification and ammonia decomposition, are relatively mature. However, There are some problems, such as high cost, low output rate, low labor efficiency, one high and two low. In the process of oil and gas production in Liaohe Oilfield, there are hydrocarbon resources such as dry gas and naphtha. Hydrogen production by this method can maximize the utilization of resources. Moreover, the main component of the associated natural gas is methane, which can be converted into hydrogen by hydrocarbon steam, with high production purity and high production efficiency.
The main processing processes of natural gas include atmospheric and vacuum distillation, catalytic cracking, catalytic reforming and aromatics production. At the same time, including natural gas exploitation, gathering and purification, alkanes and steam in natural gas react chemically under certain pressure, high temperature and catalyst.
After heat exchange in the fee boiler, the converted gas enters the shift furnace to change Co into H2 and CO2. Then, after heat exchange, condensation and steam water separation, the gas is sequentially passed through the adsorption tower equipped with three specific adsorbents through program control, and N2 co CH4 CO2 is pressurized and adsorbed by pressure swing adsorption (PSA) to extract product hydrogen, depressurize and analyze to release impurities and regenerate the adsorbent.
Post time: Nov-18-2021
