Electronic level CO2
First, product introduction
Carbon dioxide is colorless, tasteless, Noncombustible, and unflammable asphyxiating gas, with a slightly larger density than the air, which can be dissolved in water and produce carbonic acid. solid state
Carbon dioxide is commonly known as dry ice after compression. Carbon dioxide is considered to be the main source of the greenhouse effect.
Chinese Name: carbon dioxide
Molecular formula: CO2
English Name: carbon dioxide
Relative molecular weight: 44.01
CAS No:124-38-9
Hazard category: type 2.2 uncombustible gas
UN No:1013 (gas) 2187 (liquid)
Solubility: soluble in water
Melting point (517.97kPa): -56.6 C
Boiling point (101.325kPa, sublimation point): -78.5 C
Critical temperature: 31 degrees centigrade
Liquid density (273.15K, 3485kPa): 929.5kg/m3
Critical pressure: 7.38MPa
Relative density (gas, air =1):1.53
Two. Technical standards
Inspection project
National standard GB/T23938-2009
Carbon dioxide (v/v)% >
Ninety-nine point nine nine five
Ninety-nine point nine nine nine
Hydrogen is less than or equal to ppmv
Two
Zero point five
Oxygen is less than or equal to ppmv
Five
One
Nitrogen is less than or equal to ppmv
Thirty
Three
Carbon monoxide is less than or equal to ppmv
Two
Zero point five
The content of THC is less than or equal to ppmv
Three
Two
The water is less than or equal to ppmv
Eight
Three
Three, packing specification (steel bottle, Y bottle)
Volume (liter)
Forty
Four hundred and forty
Filling quantity (kilogram)
Twenty-two
Two hundred and fifty
Valve model
CGA580
DISS716
* other specifications can be provided in accordance with customer requirements.
Four, the application of carbon dioxide
High purity carbon dioxide is used in laser cutting machine laser gas, embryo cell culture, critical extraction of medicine, oil field fracturing well washing, for dry ice,
The low-temperature preservation and transportation of food, the fire extinguishing agent, the coolant, the insecticide, the plant growth promoter, the fermentation industry, the drug (local anesthesia), the sugar industry,
Glue and animal glue manufacture, etc., are used to convey the pressure into the gas of flammable liquid, the configuration of standard gas, special mixed gas and so on. The application of electron level carbon dioxide in half
Oxidation, diffusion and chemical vapor deposition in the manufacture of conductors.
Five. Precautions
The workplaces should provide good natural ventilation, and the operators must undergo special training and strictly observe the operating rules. Bottled carbon dioxide
For high pressure liquefied gas, it should be used by a qualified pressure reducer when used. Steel bottle handcart should be used when handling, light load and light unloading, prevent cylinder.
And the accessories are broken. It is possible to cause asphyxia when the content of carbon dioxide is increased and the oxygen content is less than 19.5%. Each bottle of carbon dioxide is in use to the tail gas
At the time, the residual pressure in the bottle should be kept at 0.3MPa, and the minimum should not be less than 0.2MPa residual pressure. The bottle valve should be closed to ensure the quality of the gas and the safety of the use.
Carbon dioxide should be stacked at the time of transportation, storage and use, and it is forbidden to pile up combustible gas and combustion gas and not be close to open fire and heat source.
Should not be close to fire, do not stick to oil wax, do not burst, do not throw, do not impact, strictly prohibit open fire and barbarous loading and unloading. Steel bottle inspection on the bottle neck
Check the time, do not meet the requirements of the cylinder should be entrusted ferrill specialty gas supplier to the pressure vessel inspection unit qualification test. Strictly prohibit
Use the overdue steel bottle.
