12000 Nm3/H SMR Hydrogen Plant With Programmable Control Valve
Shanghai Xinyou Energy (Shandong Kenli) 12,000 Nm3/H SMR Hydrogen Plant
Technology Application:
The conversion workshop section has optimized the conversion efficiency and material consumption with the raw material of natural gas and other light hydrocarbon. The Two-high THiPSATM technology is adopted for the PSA workshop section to guarantee the high yield and purity of the hydrogen, the technology has reached the world advanced level.
Hydrocarbon pre-reforming and steam reforming
Natural gas will be mixed with process steam as per the proportion 3.2～3.8 after desulfurized to 0.1PPm and below and then flow into reforming pipe after entering mixed gas preheating coil pipe and being further preheated to 530～580℃. In catalyst bed, H2 and CO will be generated via reaction of methane and steam, and CO will be generated into CO2 after reacting with steam. Heat required for methane reforming is provided by burning mixed fuel gas. The main reaction of nickel catalyst is shown below:
CH4+H20(steam) = CO +3H2-49200Kcal/Kmol(reforming reaction)
CO+H20(steam) = CO2 +H2+9840Kcal/Kmol (shift reaction)
Cracking reaction of higher alkane (400～600℃)
CnH2n+2+nH2O(steam) =(2n+1) H2 + n CO
Appropriate reforming temperature, water-carbon ratio and coefficient of excess combustion air are of much significance to energy consumption of hydrogen production device
(1) Improving reforming temperate appropriately is in favor of lowering unit consumption of hydrogen production; it is particularly obvious for device with decarbonization unit.
(2) Unit consumption of hydrogen production will decline slightly when water-carbon ratio is decreased from 3.5 to 3.0; therefore, during operation, water-carbon ratio is not suggested to lower to pretty low level deliberately, so as to ensure device can be operated continuously for a long period.
(3) Increase of combustion air needs much fuel consumption. Excess air should be reduced as far as possible and fuel consumption can be decreased by burning hot air.
Technical indexes:
Purity: ≥99.99%
Capacity: 12,000 Nm3/H
Features and advantages of smr hydrogen plant
Mature process technology and safe and reliable operation.
Short cycle of project construction and investment recovery rate to achieve strong market competitive.
Multistage margin recovery and the PSA desorption gas burn-back enabling energy saving and environmentally friendly.
Special adsorbent, low operating cost, high purity and high yield.
Special programmable control valve with high level of automatic.
Process Schematic
Related qualifications and patents
Relying on its ability to research and develop, Techairs has obtained 90 International and domestic patents, more than 100 patent applications, 13 identified scientific and technological achievements, 4 awards for scientific and technological progress, 7 scientific and technological funding, 33 trademarks and 5 provincial and ministerial level scientific and technological progress awards. Obtained environment/quality management system certificate, HSE management system evaluation certificate.
• Class B qualification of engineering design and EPC contract
• Class III pressure vessel A1/A2 design qualification
• GC1,GC2 pressure pipe qualification
• Pressure vessel, pressure pipe and boiler installation qualification
• Class A certificate of provincial environmental pollution control level
• Fire design qualification
Reference
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