What types of hydrogen compressors are there?

Hydrogen compressorIt is often used in steel plants or laboratories, which makes the use of compressors more convenient. The compressors used in different applications or even the same factory are not necessarily of the same type. Because there are many types of hydrogen compressors.

point:

What is a hydrogen compressor?

Compressor type

Compressor type selection

application type

What is a hydrogen compressor?

A hydrogen compressor is a device that increases the pressure of hydrogen by reducing its volume to produce compressed hydrogen or liquid hydrogen. This is a compressor that discharges the hydrogen collected in the water electrolyzer to the outside of the ship.

Discipline: Marine Engineering (discipline); Marine Machinery (two subjects)

Compressor type

1. According to the principle, hydrogen compressors can be divided into two types: volumetric type and speed type, of which volumetric type is the most common. Positive displacement compressors are divided into two types: reciprocating piston type and rotary type.

The reciprocating piston type changes the gas workload by reciprocating the piston in the cylinder. Piston compressors have a long history and mature production technology.

2. Rotary compressors include vane (sliding) rotary compressors and screw compressors. Currently, most air conditioners produced in China use rotary compressors. Screw compressors are mainly used for large-scale refrigeration equipment, and now there are many screw compressors in some large shopping malls and office buildings.

Compressor type selection

Like other gases, hydrogen can be pressurized by reciprocating or centrifugal compressors to meet process requirements. In each typical application, the type of compression should be determined based on the hydrogen flow rate and the pressure to be increased. machine. For large and medium-sized hydrocracking units, the new hydrogen compressor uses a reciprocating compressor, and the circulating hydrogen compressor uses a centrifugal compressor.

Positive displacement compressors use volume changes to compress gas. In a reciprocating compressor, the piston moves in the cylinder. The compression of hydrogen in a reciprocating compressor usually has the following characteristics:

1. Multi-stage compression can achieve a larger pressure ratio. Reciprocating compressors are not sensitive to the molecular weight of compressed gas, and can reach a pressure ratio of 2 to 3 in each compression stage, which is suitable for compressing new hydrogen.

3. Limit the outlet temperature of each compression stage to no more than 135°C. Compared with air, hydrogen has a large slip number. During the compression process, it easily leaks through the piston ring, resulting in an increase in temperature and volumetric efficiency. At the same time, the lower gas outlet temperature also benefits the valve. Longevity and reliability also reduce the penetration of hydrogen into the material.

application type

However, in the petrochemical industry, the most widely used compressor units are reciprocating compressors and centrifugal compressors. The compressor unit is the core equipment of oil refining and chemical plants. This is the key to long-term, safe and stable operation of oil refining and chemical plants. Especially in hydrotreating plants, reciprocating hydrogen compressors have been widely used. Both the new hydrogen compressor and the circulating hydrogen compressor are reciprocating compressors, and their functions are mainly used for hydrogen refining in the hydrofining reaction system and recycling of raw hydrogen.

This article introduces you to some common types of hydrogen compressors. The compressor pressure of our company is 150-200 kg, which is suitable for GHV GHW ghd compressor. In the heat treatment of stainless steel, ammonia decomposes and pressurizes hydrogen gas to form a protective gas. Applicable model HV type. Our company also produces various types of machines, includingOxygen compressor和Nitrogen compressor。