Адсорбционный анализатор газа высокого давления

Принцип испытания

◆ After the sample is placed in the sample tube, it is first filled with an inert calibration gas (such as helium) to calibrate the volume occupied by the sample and the remaining free space volume (dead volume) in the sample tube. Subsequently, a certain amount of adsorbate gas is filled into the sample tube (gas injection). When adsorption equilibrium is reached, the software automatically records the adsorption amount at this pressure value. Then, this operation is automatically repeated until the desired maximum pressure value is reached. By plotting the adsorption amount against the corresponding pressure values, we obtain the adsorption isotherm.

◆ For some samples, the adsorption amount varies significantly at different temperatures. In such cases, we can test the change in the amount of gas adsorbed by the sample at different temperatures according to the user's actual needs.

◆ For all these complex operations, the Bestde BSD-PH series high-temperature and high-pressure gas adsorption instrument has achieved fully automatic operation and automatically performs complex data model processing to provide an evaluation of the sample's high-temperature and high-pressure adsorption performance for adsorbates!

Основные функции

◆ Static Volumetric Method for High-pressure Gas Adsorption

◆ High-temperature and High-pressure Gas Adsorption/Desorption Isotherm Test

◆ PCT Adsorption/Desorption Curves and Adsorption Constants

◆ Shale Gas and Coalbed Methane Reserve Evaluation Studies

◆ Hydrogen Storage PCT and Hydrogen Absorption/Desorption Cycle Tests

◆ Adsorption Performance Studies of Porous Materials

Optional Functions:

◆ Atmospheric Pressure Desorption Rate Test

◆ Constant Pressure Adsorption Rate Test

◆ Temperature-programmed Desorption (TPD) Test

◆ High-pressure Volumetric Method for Multi-component Adsorption Test

Software and Data Processing:

Langmuir model isotherm regression

Freundlich processing model

Adsorption intensity (n), adsorption constant (k)

IAST competitive adsorption simulation

Background subtraction simulation

Supercritical adsorption processing model

Clausius–Clapeyron relation isosteric heat of adsorption calculation

Relevant Model and Name

STD-PH Fully Automatic High-temperature and High-pressure Gas Sorption Analyzer

Адсорбционный анализатор газа высокого давления

Standard configuration, pressure range 0-20MPa, optional 1/2/4 analysis stations.

STD-PHU Ultra High-pressure Gas Sorption Analyzer

Ultra High Pressure Gas Sorption Analyzer

Ultra high-pressure configuration, options of 0-50MPa or 0-69MPa, optional 1/2 analysis stations.

Suitable for high-pressure adsorption studies of shale gas, coalbed methane, and hydrogen storage. It is the fully automatic gas sorption analyzer with the highest test pressure internationally.

BSD-PHE High-pressure Gas Sorption and Constant Pressure Adsorption Rate Analyzer

High Pressure And Equal Pressure Sorption Analyzer

Alternative to magnetic suspension balance weight method for high-pressure adsorption, enabling volumetric constant pressure adsorption kinetics analysis. (Patent No.: ZL 2019 2 1740137.5)

Pressure range: vacuum to 20MPa, dual pressure sensors, supporting automatic switching.

Test functions: volumetric high-temperature constant pressure adsorption/desorption isotherms; adsorption/desorption t-P/t-V curves; PCT adsorption/desorption isotherms; Langmuir adsorption constants a, b; Freundlich adsorption intensity n, adsorption constant k; IAST theoretical model multi-component competitive adsorption curves; Clausius-Clapeyron adsorption/desorption heat curves; constant pressure adsorption/desorption amount and rate (kinetics) tests; built-in combustible gas alarm.

Optional: gas alarm ventilation linkage system; TPD temperature-programmed desorption rate test.

BSD-PHEM High-pressure Gas Sorption and Constant Pressure Adsorption/Desorption Rate Analyzer

High Pressure Sorption And Atmospheric Desorption Analyzer

Compared to BSD-PHE, equipped with MFC to enable studies of atmospheric constant pressure desorption rate and TPD desorption temperature under large desorption amounts with large sample sizes simulating application conditions.

Thermodynamic studies: adsorption/desorption isotherms, TPD desorption temperature studies.

Kinetic studies: constant pressure adsorption rate, constant pressure desorption rate, TPD desorption rate studies, TPD temperature-programmed hydrogen release.

Extended chamber volume: optional 1000cm³ or 3000cm³.

Optional: low-pressure vacuum constant pressure hydrogen release module. TPD temperature-programmed hydrogen release pressure range: 0.01bar to atmospheric pressure. For hydrogen storage materials, it has a temperature-programmed constant pressure hydrogen release module under low-pressure vacuum, not limited by sample size and hydrogen release amount.

BSD-PHC Cladding Pressure High-pressure Gas Sorption Analyzer

Адсорбционный анализатор газа высокого давления с покрытием

Applies axial and radial forces to whole rock cores and coal cores to simulate formation stress environments and evaluate adsorption performance of rock and coal cores under high stress, significantly improving reserve estimation accuracy.

BSD-PHM Multi-component High-pressure Gas Sorption Analyzer

Multi-component High Pressure Gas Sorption Analyzer

Volumetric multi-component selective competitive adsorption function, equipped with a high-pressure microcirculation system to solve the problem of gas stratification in multi-component adsorption. (Patent No.: ZL2020 2 0367383.7 )

Optional Functions

Liquid Nitrogen Level Constant Device (LNL)

For high-pressure hydrogen adsorption at liquid nitrogen temperature, eliminating temperature zone changes caused by liquid nitrogen evaporation. (Patent No.: ZL2018 2 0487496.6 )

Gas Booster System

With dedicated booster systems for different gases such as H2. CH4. N2. etc., with pressure ranges of 30MPa, 60MPa, 80MPa.

Main Parameter

◆ Test Precision: Repeatability error < ±2%

◆ Pressure Range: From high vacuum up to 690bar maximum

◆ Temperature Range: -196℃ to 1100℃

◆ Safety Features: Internally pressure-tested to ensure airtightness, equipped with a combustible gas alarm, optional gas alarm interlocking system available

◆ Pressure Accuracy: High-precision imported pressure sensor with 0.01%FS accuracy, long-term stability of 0.025%FS

◆ Instrument Thermal Control (Air Bath): Fully temperature-controlled internal environment with manifolds, valves, and gas sources operating in a unified air bath at 40.0℃ ±0.1℃ temperature stability

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