LNG Air Heated Gasifier

LNG air heated vaporizer is a new natural gas supply process. The whole system consists of LNG cryogenic steel cylinder, air heated vaporizer and pressure regulating and metering system. Scope of use and characteristics of LNG cylinder group gasification station: 1000-5000 households, small investment, short construction time, LNG storage tank within 300 km, low-temperature steel cylinder filling, low operation cost. Our business purpose: Gas Engineering, safety first; Price is not the lowest, quality assurance first-class.

Product structure

This series of gasifiers are tubular and connected by star shaped finned tubes. The unique "bridge" connection improves the gasification capacity and flexibility of the equipment. The connection between the fins does not need welding, with small internal stress, compact structure, uniform arrangement, beautiful and durable.

The heat transfer tube of air heated gasifier is formed by extruding the heat sink and tube. The cross section of the heat transfer tube is star fin. The air heated gasifier is composed of evaporation part and heating part. The evaporation part is composed of end plate tubes connected with side-by-side heat conducting tubes, and the heating part is composed of heat conducting tubes connected in series with elbow joints.

Main technical parameters

Working pressure: 0.1-40mpa

Applicable media: LO2, LN2, LAR, LNG, lco2, lc2h4, LPG, lnh3, lc3h8, etc

Vaporization capacity of single unit: 20-10000nm3 / h (combination mode can be adopted for higher vaporization capacity)

We can produce all kinds of superchargers and heaters according to customers' requirements

Note: larger flow and longer continuous full load operation can be obtained by multiple parallel connection or multiple switching;

Design conditions: temperature - 10 ℃ ° C. Relative temperature 70%, continuous use of 8-12 hours of gasification capacity.

Star finned tube

Star shaped finned tube is the core component of vaporizer, which is the result of heat absorption and gasification. The material of finned tube is antirust aluminum. The commonly used fins of finned tube are 8 fins and 12 fins. The outer diameter of finned tube mainly consists of two specifications, φ 160mm and φ 200 mm, usually used for large-scale vaporization φ 200mm。

Material and technology

All parts are made of aluminum alloy and stainless steel with excellent oxidation resistance and high performance. Before leaving the factory, the product is dried with nitrogen according to the oxygen standard to ensure the product quality and use more safely.

working principle

LNG air heated gasifier uses natural convection of air to heat the low temperature liquid in the heat exchange tube and make it evaporate into gas completely; It is a kind of high efficiency and energy-saving heat exchange equipment with air temperature and heating vaporization function, which can replace heating vaporization products. Vaporizer is the low temperature liquid gas through heat exchange, vaporization into a certain temperature of gas, according to the purpose is divided into high, medium and low pressure three kinds.

The high-pressure vaporizer vaporizes the liquid oxygen, liquid nitrogen, liquid argon and liquefied natural gas pressurized by cryogenic liquid pump into high-pressure gas and fills the steel cylinder. The low-pressure vaporizer vaporizes the low-temperature liquid in the storage tank into low-pressure gas, which is transported to the use site through the pipeline through the pressure regulating device. Air heated vaporizer is a high efficiency and energy-saving product. Compared with water bath electric heating vaporizer and steam heating water bath vaporizer, it can save a lot of electricity or steam.

The structural features of the carburetor can ensure the normal operation of all parts under cryogenic temperature, avoid seal freezing, good sealing, safe and reliable, non corrosive, and long service life. Using special ￠ 120, ￠ 160, ￠ 200 large diameter special aluminum finned tube, defrosting speed is very fast. The welding seams of all parts of the carburetor are welded by argon arc welding. The welding seams are neat, beautiful and free of air hole defects. Optimize the process design to minimize the pressure and ensure the flow rate within the safe range.

Main advantages

● The use of large finned aluminum tubes with high heat transfer coefficient, good strength and extension performance can accelerate defrosting, high heat transfer efficiency and low self weight.

● The whole equipment is connected by aluminum "bridge", which is beautiful, firm and durable, and can effectively eliminate the stress caused by thermal expansion and cold contraction.

● Optimized design, combined with practical experience, designed a carburetor which can meet the requirements of gasification capacity, save cost, reduce pressure drop and have no bias flow.

● The equipment is simple and compact, fast installation, convenient maintenance and simple operation.

● The equipment has no moving parts, no vulnerable consumable parts, no energy consumption, no operation cost and environmental protection.

● The surface of the heat exchange tube is treated with anti-oxidation treatment, which has a long service cycle and can be used for life at one time.

● There are various specifications of heat exchange tubes to choose from, and the external dimensions can be designed according to the requirements, so as to reduce the floor area and save the site.

● Advanced high-pressure tube composite technology makes the pressure tube and heat exchange tube 100% contact to ensure the heat exchange effect.

● All parts of the equipment are cleaned and manufactured according to the oxygen service standard, so it is safer to use.