Industrial explosion-proof gas chromatograph

1Industrial explosion-proof gas chromatographThe application

With the development of the social economy, large modern enterprises such as petrochemicals, steel, coal, etc. are constantly being built. In the production process involving the storage, transportation, production, processing, and handling of explosive substances, explosive hazardous substances will inevitably exist. At the same time, human factors such as selection, installation, maintenance, and operating standards also constitute crucial explosion-proof safety issues.

UseIndustrial explosion-proof gas chromatographPurpose and significance: In industrial production, especially in petrochemical production, many production processes have characteristics such as flammability, explosiveness, high temperature, high pressure, and toxicity. Many process media have strong corrosiveness, and some media are prone to crystallization and pipeline blockage. Corresponding technical measures must be taken to solve the protection problem of measuring instruments when used in these special places.

Due to the special nature of the testing environment, it is required that the testing instruments have explosion-proof functions and online monitoring capabilities, so that real-time monitoring of gas composition and content can be carried out in hazardous areas, providing data reference for controlling gas content in production. Not only does it have the ability to perform online gas detection, but it also has explosion-proof capability in explosive hazardous environments.

Although ordinary positive pressure explosion-proof cabinets can meet the on-site explosion-proof requirements, they areIndustrial explosion-proof gas chromatographCompared to its low integration, complex on-site operation and debugging, high gas consumption, and high energy consumption, it has limitations in use.

A typical online chromatograph only has an explosion-proof cabinet installed outside the ordinary chromatograph, but it has not been considered from the perspective of the chromatograph's own application. The chromatograph itself will be used or testedSuch as hydrogen and toxic gases such as phosphine and arsine, explosion-proof cabinets do not consider the prevention of these components. Once these substances leak, the explosion-proof cabinet cannot timely output signals to the outside world and take safety measures (automatic circuit and gas path cut-off).

2、 HA-9680 Industrial Explosion proof Gas Chromatography Explosion proof Index

HA-9680Industrial explosion-proof gas chromatographIn February 2022, the product passed the certification of the National Instrument Explosion proof Safety Supervision and Inspection Station and obtained the NEPSI Explosion proof Certificate, with an explosion-proof level of EX d ib mb px Ⅱ CT4 Gb.

1. Applicable environment

A、 Hazardous areas for explosive gas mixtures: Zone 1, Zone 2

B、 Explosive gas mixture: Class IIA, IIB, IIC, HA-9680 has an explosion-proof rating of IIC and is suitable for all gas components including hydrogen and acetylene.

C、 Temperature group: T1-T4, which is the highest surface temperature of electrical equipment related to gas ignition temperature (assuming an ambient temperature of 40 ℃), and ignition energy is independent of ignition temperature.

2. Explosion proof mode

A、 Preprocessing system, explosion-proof type: All injection and carrier gas pressure reduction systems are located in the left chamber of the explosion-proof type

B、 Keyboard, intrinsic safety type: enables on-site debugging and testing of the chromatograph

C、 Electromagnetic valve, sealed type: achieving flow path switching for pre-treatment

D、 Circuit system, positive pressure type: effective prevention and control of explosive gases in chromatography instruments

u Applicable but not limited to the following standards:

1. Product standards

GB/T 3634.2-2011 "Pure Hydrogen, High Purity Hydrogen, and Ultra Pure Hydrogen" GB/T 14599-2008 "Pure Oxygen, High Purity Oxygen, and Ultra Pure Oxygen"

GB/T 8979-2008 "Pure Nitrogen, High Purity Nitrogen, and Ultra Pure Nitrogen" GB/T 4842-2017 "Argon"

GB/T 4844-2011 "Pure Helium, High Purity Helium, and Ultra Pure Helium" GB/T 17873-2014 "Pure Neon and High Purity Neon"

GB/T 12022-2014 "Industrial Sulfur Hexafluoride" GB/T 28125.1-2011 "Determination of Hazardous Substances in Air Separation Processes"

GB/T 37244-2018 "Hydrogen Fuel for Proton Exchange Membrane Fuel Cells Vehicles" GB/T 5829-2006 "Krypton Gas"

GB 1886.228-2016 "National Food Safety Standard - Food Additives - Carbon Dioxide" GB/T 5828-2006 "Xenon Gas"

2. Online technical specifications:

GB 3836-2000 "Electrical Equipment for Explosive Gas Environments" IEC79 "Electrical Equipment for Explosive Gas Environments"

GB 50058-92 "Design Code for Electrical Installations in Explosive and Fire Hazardous Environments" IEC61779 "Combustible Gas Detectors"

IEC 60079 "Electrical equipment for explosive gas atmospheres" IEC/CENELEC "Code for cable enclosures and installation in hazardous areas"

SH/T3082-2003 "Design Specification for Instrument Power Supply in Petrochemical Industry" SH/T3081-2003 "Design Specification for Instrument Grounding in Petrochemical Industry"

u System configuration:

（1）HA-9680Industrial explosion-proof gas chromatograph(5) Ventilation automatic control system

(2) Automated pre-processing system (6) Explosion proof alarm system

(3) Gas saving mode (7) small square system

(4) Automatic injection calibration system (8) gas cut-off protection system

u Instrument parameters:

Instrument parameters:

Dimensions: 1300mm (W) × 1800mm (H) × 1000mm (D)

1. Product usage environment temperature range -20 ℃ -+40 ℃

2. Electrical safety parameters: 220VAC, maximum power of 5kw

3. The pressure range of the user's gas supply source is 0.4Mpa-0.8Mpa, with a positive pressure ventilation duration of 30 minutes and a positive pressure value of 60Pa-200Pa

4. Detector configuration can be any one or more of TCD, FID, PDD, FPD

5. 4-20mA and Modbus data transmission