Praxeidos Srl at GLANCE 1

2018 January

PraxEidos Srl AT GLANCE 1

. Technical & Commercial Location . North east of Milan . Address : Via Fiume 13 20871 Vimercate (MB) Italy . Administration . North east of Milan . Address : Via Prina 24 20900 Monza (MB) Italy

PRAXEIDOS S.r.l. Sede Operativa Via Fiume 13 - 20871 Vimercate (Monza Brianza), Sede Legale Via Prina 24 - 20900 Monza (Monza Brianza) - Tel. Uff. +39 039 5968181 - email – [email protected] Partita IVA 08511600960 - REA MB-1894076 - WEB - http://www.praxeidos.com/ 1 14 2018 January

PraxEidos Srl AT GLANCE 2

. Experience . 25 year in a Italian Gas Company . Commercial and Technical Managers . Industrial Fields . Oil and petrol market . Chemical market . Pharmaceuticals market . Metals market . Food market . Hospital . Presence . Europe . Middle East . China, People´s Republic of

PraxEidos Srl PRODUCTS 3

1. VOC RECOVERY UNITS 2.1 Solvent Recovery Units 2.2 Recovery of Petrol Vapor 2.3 Ship Gas recovery 2. DEOXO – NITROGEN PURIFICATION UNIT 3. HYDROGEN ON SITE GENERATORS 4. OXYGEN, NITROGEN ON SITE GENERATORS 5. SKID ASSEMBLED UNITS 6. LOW FROST CRYOGENIC GAS VAPORIZERS

PraxEidos Srl GAS RECOVERY UNITS 4 Solvent Recovery Unit The Need The Thecnology Provided

PraxEidos has developed the technology to reduce pollution from A responsable approach fowards protecting the enviroment The obvious choise of a cooling medium is liquid nitrogen which a number of industrial activities using a cryogenic condensation. means limiting the emissions of volatile components. can provide cooling down to -180 °C. New laws and attitudes to enviromental protection are driving down One method is the condensation of these components by cooling The disign of the heat exchangers poses a special challenge which the permissible level of emission of volatil organic compounds (VOC’s). the exaust stream with liquid nitrogen. As the vapours are is beyond the remil of typical heat exchanger design packages. The aim is to reduce the damage that VOC’s cause to human healt and cooled, the volatile components condense and than freeze. Not only are the temperature outside the normal parameters but enviroment.Many of these substances are cancinogenic and These solid particles can be trapped leaving a clean stream of gas the heat transfer relationships have to consider the boiling and causephotochemical smog. to vent to the atmosphere. gas heating of nitrogen, and the condensation and freezing of The neatest and cleanest way to remove VOC’s from exaust gas stream The understanding of the heat transfer mechanism has promoted multiple volatile components in an incondensable stream. is condensation with liquid nitrogen. special heat exchanger geometries which are best suited to be PraxEidos has developed computer design tools to model these The technology from PraxEidos removs VOC’s to meet emission level properties of boiling nitrogen and condensation of gases within heat transfer mechanism and generate valid heat exchanger 3 lower than 20 mg/Nm as well as overcoming the limitations of incondensable vapours. designs. traditional control methods. The temperature required to meet acceptable emissin standards of the order of tens parts per million (ppm) are typically -100 °C and lower. The Benefit

Cryogenic recovery system , designed and supplied by PraxEidos, combines the refrigeration power of liquid nitrogenwith the inerting properties of gas nitrogen resulting in a skid mounted VOC’s control system that is simple to install, economical and effective. Running costs are reduced to a minimum by the ability to reuse the nitrogen to purge and blanket pipe work and tanks. Recovered VOC’s can often be reused directly – something that is more difficult with carbon bed technology and impossible with incinerators and catalytic oxydisers.

PraxEidos Srl SOLVENT RECOVERY UNIT 5

Endura General Electric Ravenna-Italy Firenze - Italy Odersun - Germany

Nitrolchimica Milano - Italy

General Electric Massa - Italy Kob - Germany

PraxEidos Srl GAS RECOVERY UNITS 6 Recovery of Petrol vapor

Benefits - Residual concentration of petrol vapor to enviroment < 20 mg/m³ - Specific electric energy consumpion 0,12 Kwh / Kg recovery petrol

PraxEidos Srl GAS RECOVERY UNITS 7 Recovery of Petrol vapor

NIOC Iran

PraxEidos Srl GAS RECOVERY UNITS 8 Ship Gas Recovery Unit

PraxEidos Srl DEOXO UNITS 9

In the Deoxo reactor, the oxygen content in nitrogen combines with hydrogen to form water. The reaction leads to an increase in temperature which is depending o the starting oxygen content. To remove the moisture generated, the gas is passed through the drying section consisting of two adsorbent beds filled with activated alumina.The beds work in alternative to allow for the regeneration. Final dew point of -70 °C can be easily obtained.

Deoxo Data Sheet AMBIENT TEMPERATURE +5 °C / +40 °C DESIGN Construction material Stainless Steel Design Code PED Desing Pressure 13 bar DIMENSIONS Depending on design flow rate NITROGEN Design Flow rate : up to 2.000 Nmc /h Pressure drops: < 0,2 bar Inlet Purity: 99,9 % Outlet Purity: 99,9999 %

final O2 content: < 1 ppm

final H2 content: < 1 ppm Required Intlet Dew Point : < +3 ° C Dew Point increase: +10 ° C Temperature increase max.: +10 ° C HYDROGEN

Pressure: 2 bar higher than N2 pressure 3 H2 consumption: 2 Nliter H2 / Nm N2 Purity: > 99,5 %

PraxEidos Srl HYDROGEN ON SITE GENERATOR 10 HYSYS technology is based on a solid polymeric anion exchange membrane to produce pure hydrogen and oxygen.

HYSYS can produce up to 4000 Nl/h (66,6 Nl/min) of gaseous hydrogen from a 3% in weight water solution of potassium hydroxide.

Internal water tank can be filled when HYSYS is on function. Gases are delivered separately. Oxygen is vented through water return pipeline and hydrogen from its hose.

HYSYS can resist up to 20 bar (290 psi) of internal pressure avoiding the need of a gas compressor for gas storage at this nominal pressure.

30 bar (424 psi) are available as option.

The minimum hydrogen purity is 99,9% without any dryer or purifier cartridge. Better performance can be achieved using a water dryer. HYSYS – Hydrogen Generator

Technical data

H2 Production rate : : up to 4000 Nl/h (66,6 Nl/min) Water tank capacity : up to 60 L Water Consumption : <1 gr/h per Nl/h of Hydrogen Max pressure : 18 barg Operating pressure : >10 barg Nominal Voltage : 230 V AC – 50/60 Power consumption : 4,5÷5 kWh / Nm3/h H2 Nominal Operating Temperature : +5 ÷ +45°C Maximum Operating Temperature : 50°C Hydrogen Purity : >99,9% * it depends from current density and internal pressure Alkaline Electrolytic Stack HYSYS Touch Screen

PraxEidos Srl 11 Oxygen & Nitrogen Generators

PSA Membrane PSA Nitrogen Generator Nitrogen Generators Nitrogen Generators Oxygen Generators Container

PraxEidos Srl 12 SKID ASSEMBLED UNITS

PLATINUM CATALYST RECOVERY

PraxEidos Srl 13 LowFrost Cryogenic Gas Vaporizer

An easy way to vaporize industrial and hydrocarbon gases at cryogenic temperature reducing ice formation on cold surfaces to ambient air. High efficiency over time and easy to regenerate by means of included heat source.

AS CRYOGENIC GAS VAPORIZER or AS PRESSURE BUILD - UP

• Specific vaporization flow rate : 10 Nm3/h per meter of length • Gas temperature : 10 °C below ambient temperature • Applicable to the cryogenic tank directly; • Automatic switch-over for defrosting including energy source; • Low ice thickness build-up on the external surface to ensure long runtime and constant high efficiency over time; • Low pressure drop; • No fog formation by condensation of ambient humidity; • As pressure build-up application, the overall height shall allow for emptying the cryogenic thank;

PraxEidos Srl 14

THANKS FOR YOUR ATTENTION