What is a carbon dioxide compressor?

With such asOxygen compressorHydrogen compressors and carbon dioxide compressors also came into being, and gradually used in various industries to bring people different products. It is believed that carbon dioxide is completely useless not only for chemical treatment but also for food protection.

Key points:

• What is carbon dioxide?

• The nature of carbon dioxide

• What is a carbon dioxide compressor?

• Features of carbon dioxide compressor

What is carbon dioxide?

The compound of carbon monoxide and carbon dioxide, the molecular formula is CO 2 and the molecular formula is 44.0095. It is colorless, odorless or colorless, odorless and slightly acidic gas at room temperature and pressure. It is also a common greenhouse gas or air. One of the components (0.03%-0.04% of the total atmosphere).

The nature of carbon dioxide

In terms of physical properties, carbon dioxide has a melting point of -78.5°C, a boiling point of -56.6°C, a density greater than that of air (under standard conditions), and it is soluble in water.

In terms of chemical properties, carbon dioxide is chemically inert, has high thermal stability (decomposes only 1.8% at 2000°C), can not burn, usually does not support combustion, is an acidic oxide, with acidic oxide Permeability, because carbonic acid is formed by reacting with water, it is an anhydride of carbonic acid.

Carbon dioxide can usually be obtained by calcining limestone at high temperature or reacting limestone with dilute hydrochloric acid. It is mainly used for refrigerating perishable food (solid), as a refrigerant (liquid), for making carbonated soft drinks (gas) and as a solvent. Instead (supercritical state) and so on. Regarding its toxicity, studies have shown that low-concentration carbon dioxide is non-toxic, and high-concentration carbon dioxide can poison animals.

What is a carbon dioxide compressor?

The CO2 compressor is a special gas compressor. The CO2 compressor is a compressor that pressurizes and transports carbon dioxide gas. Mainly used in urea synthesis equipment.

When designing and using, pay attention to:

1. Carbon dioxide has a high critical temperature and can be liquefied at 31.3°C and 7.14 MPa. When used in winter, the cooling temperature between stages should not be too low.

2. When the carbon dioxide is lower than 60MPa, it is beneficial to gas compression.

3. Because the relative density of carbon dioxide gas is relatively large, it is not advisable to use too large average piston speed, otherwise the valve resistance will be relatively large;

4. Carbon dioxide gas contains a small amount of water and is highly corrosive, so the gas valve, cooler and buffer tank must be made of stainless steel. According to the analysis of carbon dioxide, it meets water when a weak acid reaction occurs. Professional parts and equipment are designed with corrosion-resistant stainless steel. Special bearings, high-efficiency professional radiators, and valve steel are durable and corrosion-resistant. There is no need to add lubricating oil, the exhaust gas does not contain oil and oil vapor, and does not pollute the user's final product. It is an environmentally friendly and energy-saving product. The application range of pressurization, pressure regulation, power and purification can also provide stable power supply for power plants, food industry, medical and experimental research units.

Features of carbon dioxide compressor

Compared with compressors using common refrigerants, CO2 compressors have the characteristics of high working pressure, large pressure difference, small pressure ratio, small size, light weight, difficulty in controlling the clearance of moving parts and difficulty in lubrication. Therefore, the development of carbon dioxide compressors has always been a difficult point in the development of refrigeration technology. Various research institutions and refrigeration equipment companies at home and abroad have developed various types of compressors. Due to the environmental advantages of CO2 in automotive air conditioning applications, various refrigeration companies and automobile companies have also researched and developed CO2 automotive air conditioning compressors.

The cola we usually drink contains carbon dioxide. Don't think that carbon dioxide is useless, thereby negating the benefits of carbon dioxide compressors. If you know it correctly, you can use it better.