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Does anyone have a startup plan for a natural gas-based hydrogen production facility? Thank you

2017-11-15View Original

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I urgently need a startup plan for a natural hydrogen production facility; those who know it please upload it. Thank you very much! ! !
Reply #22017-11-21
Is it okay if I explain it here? It’s quite simple: 1. Check the circulating water system (including pipes, compressors, blowers, coolers, etc.) to remove all air from it. 2. Start the blowers to purge the furnace for 30 minutes. 3. Establish a proper flow in the system, fill it with nitrogen up to 1 MPa, and then start the large-scale circulation. 4. Fill the steam drum to 50% capacity. 1. Open the superheated steam vent. 5. Perform fuel gas venting for purging, adjust the negative pressure in the furnace and the air volume, then start igniting in sequence; raise the temperature at a rate of 20 degrees Celsius per hour until it reaches 780 degrees Celsius. 6. Vent superheated steam for 30 minutes to remove air from the drum, after which start increasing the pressure in the drum at a rate of 2 kilograms per hour. 7. After steam generation begins, pay attention to replenishing water in the drum; close the valve at the waste boiler outlet completely. 8. When the temperature at the conversion outlet reaches 600 degrees Celsius, the temperature of the medium conversion bed exceeds 200 degrees Celsius, and the pressure in the drum is 2 kilograms higher than the system pressure, start supplying steam. Pay attention to draining water from the steam pipes and ensuring that the minimum amount of steam is supplied. 9. After steam supply begins, close the superheated steam vent; monitor the liquid level in the water separator. Initially, direct the condensate to the drain, while later it can be sent to the stripping tower for recycling. 10. Once the conditions for catalyst reduction are met, introduce a small amount of natural gas. 11. When the hydrogen concentration at the conversion outlet exceeds 60%, maintain this level for 12 hours. 12. Start feeding material once the feeding conditions are met. 13. Vent the system; once the analysis of the medium conversion gas shows satisfactory results, activate the PSA unit. After the product hydrogen meets the required standards, send it out for use. 14. Direct the desorbed gas to the large flares and reduce the fuel used by the smaller flares. 15. Monitor the system pressure; shut down the compressor once the minimum circulation volume is achieved

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