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Membrane hydrogen plants

Membrane gas separation plants are capable of producing gas flow enriched with hydrogen by up to 92–99% (vol.) with the option of its return to flow process. Due to the increase in hydrogen concentration, the flow rate of re-circulating HBG decreases substantially, thus ensuring a considerable saving of process compressors resource.

Grasys hydrogen plants utilizing the membrane separation principle allow concentrating hydrogen in waste, residual, fuel and other gases up to 99.5% with the product flow rate of up to 50,000 nm³/hr.

Up-to-date membrane hydrogen plants are a decent alternative to cryogenic and adsorption systems. In many cases, membrane hydrogen concentration plants find use where the use of equipment based on other technologies is impossible or ineffective from the technical and economic standpoint.

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AdvantagesGeneral informationTechnical characteristicsApplicationBookletsDocumentation

Advantages ofGrasys membrane hydrogen plants

  • Membrane modules based onsophisticated materials
  • Compact modular skid-mounted design
  • Use ofavariety ofmembrane module types tocover awide range offlows varying within 500 to50,000 nm³/hr
  • High membrane stability asregards anumber ofimpurities (higher hydrocarbons, hydrogen sulfide etc.), which makes the membrane solution anideal choice for refining and petrochemical applications
  • Hydrogen recovery atlow operating costs

General information

Animportant advantage ofmembrane hydrogen plants consists intheir ability tooperate under various pressures ofseparated gas 10 to120 atm. Besides, membrane plants, unlike adsorption and cryogenic systems allow easy adjustment ofproduct hydrogen purity. This enables the operator tochoose the optimum equipment operation mode depending onthe tasks set.

Also, asignificant advantage isthe complete absence ofmoving parts inthe plant design. This enables the production ofexceptionally reliable and simple inoperation equipment with full automation, excellent performance characteristics and avery small footprint.

Plants are supplied onacompact skid which minimizes the scope ofinstallation works atthe customer site. Where necessary, the plant isfitted with additional process equipment according tothe customer requirements. The operational life ofhydrogen plants produced byGrasys is120 to180 thous. hours ofcontinuous operation.

Basic technical characteristics of membrane hydrogen plants

Parameter Value
Hydrogen parameters at the plant output
  • hydrogen purity, nm³/hr
9099.5
  • capacity, nm³/hr*
1,00050,000
  • pressure, atmg
10120
  • dew point, C
−40−60
Ambient air temperature
  • during operation, C
+5+40
  • during storage, C
−20+50
Plant operational life, thous. hours 120180

* The capacity isreferenced tothe standard conditions (t= 20C, P= 1atm).

Application ofGrasys membrane hydrogen plants

  • Hydrogen recovery inprocess gases ofhydrotreating, hydrocracking, isomerization, catalytic reforming
  • Reduction inconcentration ofimpurities uptothe required level
  • Hydrogen recovery inprocess gases ofpyrolysis, dehydration ofalkanes and alkenes, process gases ofmethanol production

Permit documentation

No. C-RU.AG75.B.05342 Download PDF; 711,40 KB
No. RSS 00-38193 Download PDF; 2,16 MB
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