Air Temperature Vaporizer

This series of vaporizers uses the heat from the air to heat the low-temperature liquid inside the heat exchange tube. The fins of the heat exchange tube absorb heat from the air and transfer it to the low-temperature liquid inside the tube, causing it to vaporize into gas. The air temperature vaporizer does not require electricity or steam, making it a new type of efficient and energy-saving vaporization equipment. It has no moving parts, requires no maintenance, operates silently, and is widely used for the vaporization of low-temperature liquids such as liquid oxygen, liquid nitrogen, and liquefied LNG.

　Product Details

Product Structure and Working Principle

This series of vaporizers is of the tube bundle type, using a star-shaped fin tube connection to enhance vaporization capacity and the flexibility of the equipment. The connection between the fins does not require welding, has low internal stress, is compact in structure, evenly arranged, aesthetically pleasing, and durable.

The LNG air temperature vaporizer uses natural convection of air to heat the low-temperature liquid in the heat exchange tube, completely evaporating it into gas. It is an energy-saving heat exchange device that combines air temperature and heating vaporization functions, capable of replacing heating vaporization products. The vaporizer converts low-temperature liquid gas into gas at a certain temperature through heat exchange, classified into high, medium, and low pressure according to usage.

High-pressure vaporizers vaporize liquid oxygen, liquid nitrogen, liquid argon, and liquefied natural gas that have been pressurized by a low-temperature liquid pump into high-pressure gas for filling into steel cylinders. Low-pressure vaporizers vaporize low-temperature liquid from storage tanks into low-pressure gas, which is then transported to the usage site through a pressure regulating device via pipelines. Air temperature vaporizers are efficient and energy-saving products, saving a significant amount of electricity or steam compared to water bath electric heating vaporizers and steam heating water bath vaporizers.

The structural features of the vaporizer ensure that all components operate normally at cryogenic temperatures, avoiding sealing freeze, with good sealing performance that is safe and reliable, non-corrosive, and has a long service life. It uses special large-diameter aluminum fin tubes of φ120, φ160, and φ200, with extremely fast defrosting speed.

All welds at the connections of the vaporizer components are welded using argon arc welding, with neat and aesthetically pleasing welds that have no porosity defects. The optimized process design reduces pressure drop to a lower level, with no bypass flow phenomenon, ensuring that flow speed is controlled within a safe range.

Main Technical Parameters

Suitable media: LNG, NG, CNG, LO2, LN2, LAr, LCO2, NH3, LPG, etc.

Working pressure: 0.1-40MPa.

Single vaporization capacity: 20—10000Nm³/h, larger specifications are inconvenient for transportation, please choose multiple combined units.

Equipment classification: vaporizer, heater, booster, etc.

The small LNG vaporization skid station integrates LNG storage tank, air temperature vaporizer, pressure regulator, metering device, and safety control device, providing a complete set of equipment that can directly supply gas to residential areas and industrial users.

　Star-shaped Fin Tube

The star-shaped fin tube is the core component of the vaporizer, responsible for heat absorption and vaporization. The material of the fin tube is rust-resistant aluminum, and the commonly used fin configurations are 8 fins and 12 fins. The outer diameters of the fin tubes are mainly two specifications: φ160mm and φ200mm, with large vaporizers typically using φ200mm.

　　Materials and Process

All parts are made of high-performance aluminum alloy and stainless steel with excellent anti-oxidation properties. The high-pressure connection between the stainless steel core tube and the fins is tight. Before leaving the factory, all products are nitrogen purged according to oxygen standards to ensure product quality and safer use.

　Structural Advantages

1. No energy consumption, no pollution, green and environmentally friendly; easy installation and maintenance.

2. Aluminum heat exchange, efficient, lightweight design, long service life.

3. Specially designed ultra-large diameter aluminum heat exchange tubes, extremely fast defrosting speed, effective internal fin structure, greatly improving the heat exchange effect of the heat exchange tubes.

4. The "bridge" connection is aesthetically pleasing and eliminates the stress caused by thermal expansion and contraction during operation.

5. Special anti-oxidation treatment process for the surface of the heat exchange tubes.

6. Optimized process design reduces pressure drop to a lower level, ensuring no bypass flow phenomenon and maintaining flow speed within a safe range.

7. Sufficient design flow capacity.

8. Advanced high-pressure pipe composite technology ensures full contact between the pressurized pipe and the heat exchange pipe, guaranteeing heat exchange efficiency.

9. All vaporizers are cleaned and manufactured according to oxygen service standards, ensuring safer use; can be designed and manufactured according to electronic grade standards.