Mini Tank Series — Compact and High-Efficiency Cryogenic Storage Solutions

Short Description:

The Mini Tank Series from HL Cryogenics is a range of vertical vacuum-insulated storage vessels engineered for the safe, efficient, and reliable storage of cryogenic liquids, including liquid nitrogen (LN₂), liquid oxygen (LOX), LNG, and other industrial gases. With nominal capacities of 1 m³, 2 m³, 3 m³, 5 m³, and 7.5 m³, and maximum allowable working pressures of 0.8 MPa, 1.6 MPa, 2.4 MPa, and 3.4 MPa, these tanks provide versatile solutions for laboratory, industrial, and medical applications.

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Design and Construction

Each Mini Tank adopts a double-wall structure with an inner and outer vessel. The inner vessel, made from high-quality stainless steel, is suspended within the outer shell via a dedicated support system, minimizing thermal bridging and providing mechanical stability. The annular space between the inner and outer vessels is evacuated to a high vacuum and wrapped with multilayer insulation (MLI) paper, significantly reducing heat ingress and ensuring long-term thermal efficiency.

All process lines connected to the inner vessel are routed through the bottom head of the outer shell for a clean and compact piping layout. The piping is engineered to withstand pressure variations caused by the vessel, support structure, and thermal expansion/contraction of the pipelines during operation. All piping is constructed from stainless steel, while the outer shell can be supplied in stainless steel or carbon steel, depending on project requirements.

Vacuum and Insulation Performance

he Mini Tank Series ensures optimal vacuum integrity through the VP-1 vacuum valve, which is used to evacuate the interspace between the inner and outer vessels. Once evacuation is complete, the valve is sealed with a lead seal by HL Cryogenics. Users are strictly advised not to open or tamper with the vacuum valve, ensuring safety and maintaining long-term thermal performance.

Key Features and Advantages

High thermal efficiency: Advanced vacuum insulation and multilayer insulation (MLI) minimize heat ingress.

Robust construction: Stainless steel inner vessel and durable support system ensure long-term reliability.

Compact piping layout: All process lines routed through the bottom head for clean and safe installation.

Customizable outer shell: Available in stainless steel or carbon steel to meet project needs.

Safety-focused: High-quality materials, secure vacuum sealing, and pressure-rated design for safe operation.

Long-term reliability: Engineered for durability, minimal maintenance, and stable cryogenic performance.

Applications

The Mini Tank Series is suitable for a wide range of industries, including:

Laboratories: Safe storage of LN₂ for experiments and sample preservation.
Medical facilities: Cryogenic storage of oxygen, nitrogen, and other medical gases.
Semiconductor and electronics: Ultra-low temperature cooling and gas supply.
Aerospace: Storage and transfer of cryogenic propellants and industrial gases.
LNG terminals and industrial plants: Compact cryogenic storage with high thermal efficiency.

Additional Benefits

Easy integration with existing cryogenic piping systems and equipment.

Supports safe, low-maintenance operation for long-term use.

Designed for flexibility, making it suitable for both new installations and retrofits.

HL Cryogenics’ Mini Tank Series combines advanced vacuum insulation technology, stainless steel engineering, and compact design to deliver premium cryogenic storage solutions. Whether for laboratory, industrial, or medical applications, Mini Tanks provide reliable, safe, and energy-efficient storage of liquefied gases.

For customized solutions or more technical details, please contact HL Cryogenics. Our team will assist you in selecting the ideal Mini Tank configuration for your application.

Parameter Information

stainless-steel-outer-shell

_Name^{Specification}	1/1.6	1/1.6	1/2.5	2/2.2	2/2.5	3/1.6	3/1.6	3/2.5	3/3.5	5/1.6	5/1.6	5/2.5	5/3.5
Effective Volume (L)	1000	990	1000	1900	1900	3000	2844	3000	3000	4740	4491	4740	4740
Geometric Volume (L)	1100	1100	1100	2000	2000	3160	3160	3160	3160	4990	4990	4990	4990
Storage Medium	LO2 LN2 LAr	LNG	LO2 LN2 LAr	LCO2	LO2 LN2 LAr	LO2 LN2 LAr	LNG	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LNG	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr
Overall Dimensions (mm)	1300x1300x2326			1550x1550x2710		1850x1850x2869				2150x2150x3095
Design Pressure (MPa)	1.65	1.6	2.55	2.3	2.5	1.65	1.65	2.55	3.35	1.65	1.65	2.6	3.35
Working Pressure (MPa)	1.6	1.55	2.5	2.2	2.4	1.6	1.6	2.5	3.2	1.6	1.6	2.5	3.2
Inner Vessel Safety Valve (MPa)	1.7	1.65	2.65	2.36	2.55	1.7	1.7	2.65	3.45	1.7	1.7	2.65	3.45
Inner Vessel Safety Secondary Valve (MPa)	1.81	1.81	2.8	2.53	2.8	1.81	1.81	2.8	3.68	1.81	1.81	2.8	3.68
Shell Material	Inner: S30408 / Outer: S30408
Daily Evaporation Rate	LN2≤1.0			LN2≤0.7		LN2≤0.66				LN2≤0.45
Net Weight (Kg)	776	776	776	1500	1500	1858	1858	1884	2284	2572	2572	2917	3121
Gross Weight (Kg)	LO2:1916 LN2:1586 LAr:2186	LNG:1231	LO2:1916 LN2:1586 LAr:2186	LO2:3780 LN2:3120 LAr:4320	LO2:3780 LN2:3120 LAr:4320	LO2:5278 LN2:4288 LAr:6058	LNG:3166	LO2:5304 LN2:4314 LAr:6084	LO2:5704 LN2:4714 LAr:6484	LO2:7987 LN2:6419 LAr:9222	LNG:4637	LO2:8332 LN2:6764 LAr:9567	LO2:8536 LN2:6968 LAr:9771

carbon-steel-outer-shell

1/1.6	1/2.5	2/1.6	2/2.2	2/2.5	2/3.5	3/1.6	3/1.6	3/2.2	3/2.5	3/3.5	5/1.6	5/1.6	5/2.2	5/2.5	5/3.5	7.5/1.6	7.5/2.5	7.5/3.5
1000	1000	1900	1900	1900	1900	3000	2844	3000	3000	3000	4740	4491	4740	4740	4990	7125	7125	7125
1100	1100	2000	2000	2000	3160	3160	3160	3160	3160	3160	4990	4990	4990	4990	4990	7500	7500	7500
LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr	LCO2	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr	LNG	LCO2	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr	LNG	LCO2	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr	LO2 LN2 LAr
1300x1300x2326		1550x1550x2710				1850x1850x2869					2150x2150x3095					2250x2250x3864
1.65	2.6	1.65	2.3	2.55	3.35	1.65	1.65	2.24	2.55	3.35	1.65	1.65	2.3	2.6	3.35	1.65	2.6	3.35
1.6	2.5	1.6	2.2	2.5	3.2	1.6	1.6	2.2	2.5	3.2	1.6	1.6	2.2	2.5	3.2	1.6	2.5	3.2
1.7	2.65	1.7	2.36	2.55	3.45	1.7	1.7	2.36	2.65	3.45	1.7	1.7	2.36	2.65	3.45	1.7	2.65	3.45
1.81	2.8	1.81	2.53	2.8	3.68	1.81	1.81	2.53	2.8	3.68	1.81	1.81	2.53	2.8	3.68	1.81	2.8	3.68
Inner: S30408/Outer: Q345R
LN2≤1.0		LN2≤0.7				LN2≤0.66					LN2≤0.45					LN2≤0.4
720	720	1257	1507	1620	1956	1814	1814	2284	1990	2408	2757	2757	3614	3102	3483	3817	4012	4212
LO2:1860 LN2:1530 LAr:2161	LO2:1860 LN2:1530 LAr:2161	LO2:3423 LN2:2796 LAr:3936	LCO2:3597	LO2:3786 LN2:3159 LAr:4299	LO2:4122 LN2:3495 LAr:4644	LO2:5234 LN2:4244 LAr:6014	LNG:3122	LCO2:5584	LO2:5410 LN2:4420 LAr:6190	LO2:5648 LN2:4658 LAr:6428	LO2:8160LN2:6596 LAr:9393	LNG:4822	LCO2:8839	LO2:8517 LN2:6949 LAr:9752	LO2:8886 LN2:7322 LAr:10119	LO2:11939 LN2:9588 LAr:13792	LO2:12134 LN2:9783 LAr:14086	LO2:12335 LN2:9983 LAr:14257