Publish Time: 2019-09-11 Origin: Site
Hydrogen compressors are often used by steel plants or laboratories, etc., which makes the use of compressors more convenient. Different applications or even compressors used in the same factory are not necessarily the same type. Because there are many types of hydrogen compressors.
Point：
What is a hydrogen compressor?
Compressor type
Compressor type selection
Type of application
A hydrogen compressor is a device that increases hydrogen pressure by reducing its volume to produce compressed hydrogen or liquid hydrogen. It is a compressor that discharges the hydrogen collected in the water electrolysis tank to the outboard.
Subject: Ship engineering (a subject); ship machinery (two subjects)
1.Hydrogen compressors can be divided into two types according to the principle: volumetric type and speed type, of which volumetric type is the most common. The volumetric compressor is divided into two types: reciprocating piston type and rotary type.
The reciprocating piston type changes the working volume of the gas by reciprocating the piston in the cylinder; the piston compressor has a long history and mature production technology.
2. Rotary compressors include blade (slider) rotary compressors and screw compressors. Most of the air conditioners produced in China currently use rotary compressors; screw compressors are mainly used for large-scale refrigeration equipment, and now some large-scale There are also many screw compressors in the mall office building.
Like other gases, hydrogen can be pressured by reciprocating or centrifugal compressors to meet process requirements. In each typical application, the type of compression should be determined based on the flow of hydrogen 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.
The volumetric compressor uses a volume change to compress the gas. In the reciprocating compressor, the piston is moved in the cylinder. The compression of the hydrogen in the reciprocating compressor generally has the following characteristics:
1. A large pressure ratio can be achieved by multi-stage compression. The reciprocating compressor is insensitive to the molecular weight of the compressed gas and can achieve a pressure ratio of 2 to 3 in each compression stage, which is suitable for the compression of new hydrogen.
3. Limit the outlet temperature of each compression stage to no more than 135 °C. Compared with air, hydrogen has a large slippage number. During the compression process, it easily leaks through the piston ring, causing an increase in temperature and volumetric efficiency. At the same time, a lower gas outlet temperature is also beneficial to the valve. Life and reliability also reduce the penetration of hydrogen into the material.
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 the refining and chemical plant. It is the key to long-term, safe and stable operation of the refining and chemical plant. Especially in hydrotreating units, reciprocating hydrogen presses have been widely used. The new hydrogen compressor and the circulating hydrogen compressor are both reciprocating compressors, and their functions are mainly for hydrogen refining of the hydrorefining reaction system and recycling of the raw material hydrogen.
This article introduces you to some common types of hydrogen compressors. Our company's compressors have a pressure of 150-200 kg and are suitable for GHV GHW ghd compressors. In the heat treatment of stainless steel, ammonia decomposes and pressurizes hydrogen to form a shielding gas. Applicable model HV type. Our company also produces various types of machines including oxygen compressors and nitrogen compressors.