DH Industries. Francesco Dioguardi
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- Julie Farmer
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1 DH Industries Francesco Dioguardi March 1, 2016
2 Our brands Stirling Cryogenics: Several types of Cryogenerators to produce on site cooling power CryoZone: Several types of pumps and circulators for cryogenic gases and liquids. 2
3 Brands & Product portfolio Cryo generators StirLIN CryoFan StirLNG CryoPump StirLOX StirLAIR Heat exchangers Custom design cooling solution Tailor made cooling systems 6
4 Markets Bio Storage Nuclear Food & Beverage Space & Observatory LNG & Bio gas High Temperature Superconductivity Maritime Research & University Healthcare 10
5 StirLNG (Re-) Liquefaction of methane gas 5
6 StirLNG ON-SITE LNG PRODUCTION
7 StirLNG-1
8 StirLNG-4
9 StirLNG (RE-) LIQUEFACTION OF METHANE GAS
10 Three distinctive LNG markets Creation of LNG: Production of LNG from a gas source, mostly bio-methane but also pipeline or stranded gas. Conditioning of LNG in the supply chain: Keeping the LNG condition at required temperature and pressure by compensating thermal heat losses On-land storage tanks Maritime fuel and cargo tanks
11 Easy process integration Stirling Cryogenerators Internal cold generation by He gas: methane is not part of process Simple integration: at the LNG process side the Stirling Cryogenerator is only a heat-exchanger. Small enough & efficient to fit biogas size liquefaction Capacity range 0.25 to > 10 ton/day.
12 Easy process integration Heat exchange to liquefaction process gas in liquid out Nordic Biogas Conference
13 THE STIRLING CYCLE to create cryogenic cooling power
14 Stirling thermodynamic cycle Stirling Cryogenerator interior August 28, 2014 Nordic Biogas Conference
15 Stirling thermodynamic cycle Step 1: Compression Helium gas is compressed Gas temperature rises Step 2: Cooling Compression heat is removed; The helium gas is pre-cooled in the regenerator before expansion starts Step 3: Expansion By expansion, energy is extracted from the gas and thereby the temperature goes down thus cooling the cold head Step 4: Displacement Gas is displaced back to the compression space; the cold from the helium gas is stored in the regenerator during displacement to step 1 Regenerator
16 PRODUCTION OF LNG FROM (BIO)METHANE GAS
17 Methane gas specifications The methane gas to be fed to the cryogenerators shall be of a quality that prevents clogging of the heat-exchanger Main stream CH4 CxHy (C2 to C4) < 10% CxHy (C5+) < 1 ppm CO2 < 50 ppm* H2O < -70ºC dew point H2S < 3,3 ppm Oil content < 0,01 mg/m3 Particles < 0,1 micron N2/O2 < 10%, (non-condensable to be vented)
18 Liquefaction directly into main storage vessel Purified gas is fed to the cryogenerator Gas is liquefied and fed to main storage vessel
19 Liquefaction through transfer vessel Purified gas is fed to the cryogenerator Gas is liquefied into transfer vessel Periodic transfer to main storage vessel
20 Liquefaction of feed
21 CONDITIONING OF LNG
22 Re-liquefaction of boil-off gas directly into storage vessel Cold boil-off gas is fed to the cryogenerator Gas is re-liquefied and fed back to main storage vessel
23 Re-liquefaction of boil-off gas through transfer vessel Cold boil-off gas is fed to the cryogenerator Gas is re-liquefied into transfer vessel Periodic transfer to main storage vessel,
24 Re-liquefaction of cold feed gas
25 StirLNG (RE-) LIQUEFACTION OF METHANE GAS BY COOLING OF LIQUID
26 (Re-)liquefaction by LNG liquid cooling Using the existing pump of an LNG fueling station, LNG from the tank is circulated through the cryogenerator The liquid is cooled, reducing its temperature The liquid is fed back to the tank, spraying it at the top. The cold liquid will condense gas, reducing pressure of the tank. At the same time the liquid content is cooled, absorbing heat penetrating the tank insulation
27 (Re-)liquefaction by LNG liquid cooling
28 StirLNG MARITIME USAGE
29 Adaptation for Maritime usage Corrosion prevention for maritime circumstances Oil system and liquid outlets adapted for 22,5 o dynamic roll and pitch, refer to videos Pitch Roll Static tilting up to 15 o For USCG: separation of Cryogenerator and motor by bulk head with rotating seal ABS Certified, other notified bodies upon request
30 Adaptation for Maritime usage
31 On board installation of StirLNG system
32 StirLNG-16
33 StirLNG-16 For production of 2-6 TPD LNG or re-liquefaction of 4-10 TPD of BOG 4x StirLNG-4 combined on one skid, inclusive intermediate vessel and transfer system Plug and play design: all equipment pre-installed Fully automatic operation Compact design, fits 20 container Each StirLNG-4 can work independently For -5 C to 45 o C operation, optional to -20 C
34 StirLNG-16
35 StirLNG-16
36 StirLNG-16