Petrochemical Industry and Regulated Testing

The petrochemical industry performs many tests for refined products. Refineries, Inspection and Chemical labs across the world use ASTM, ISO, IP, and other accepted chemical industry standards and protocols. Materials tested include the entire complex range of hydrocarbon based chemicals derived from petroleum. This also applies to primary petrochemicals including olefins, aromatics, and synthesis gas. Petrochemical testing can extend to trace and ultra-trace level analysis. Chemical testing expertise includes purity & component, trace composition, trace contamination, quality control, troubleshooting, and other chemical analysis expertise. ASTM chemical testing methods are utilized by laboratories for chemical analysis of petrochemicals, compounds, materials, petroleum, fuels, consumer products, and other chemical substances. ASTM chemical test methods are industry accepted standards for quality control and reliability. Testing measures require trace analysis to ppm, ppb, and ppt levels. Petrochemicals and chemicals are tested for quality control, purity, contamination, research and development, troubleshooting, environmental evaluation, regulatory compliance, and more.

No matter what your combustion applications require EST analytical has a solution for you. Innovative solutions for liquids, solids, and LPG’s are provided in either our Horizontal System the Nexis or Vertical System the 7000. EST provides full service, parts and technical support to keep your labs running seamlessly.

EST analytical solution:
To comply with ASTM D3120 method, EST analytical offers the NexiS and 7000 series models Total Sulfur microcoulometric analyzer models with syringe liquids sample introduction module. Fully automated analysis the 7000 model liquids autosampler configurations supported with temperature controlled sample trays can be applied.

Trace quantities of Sulfur compounds in hydrocarbon products can be harmful to many catalytic chemical processes in which these products are used. Maximum permissible levels of Total Sulfur are normally included in specifications for such hydrocarbons. It is recommended that this test method be used to provide a basis for agreement between two laboratories when the determination of Sulfur in hydrocarbon gases is important.

This test method covers determination of Sulfur in the range from 1.5 to 100 mg/kg (ppm by mass) by weight in hydrocarbon products that are gaseous at normal room temperature and pressure.

EST analytical solution:
EST analytical offers Total Sulfur the NexiS and TX 7000 series model analyzers with oxidative microcoulometric titration and combined instrument configurations like the NexiS model with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler model configurations for trace level Total Sulfur analysis.

EST analytical solution:
To comply with ASTM D3961 method, EST analytical offers the NexiS and 7000 series models Total Sulfur microcoulometric analyzer models with syringe liquids sample introduction module. Fully automated analysis the 7000 model liquids autosampler configurations supported with temperature controlled sample trays can be applied.

Some process catalysts used in petroleum and chemical refining may be poisoned when even trace amounts of nitrogenous materials are contained in the feedstocks. This test method can be used to determine bound nitrogen in process feeds and may also be used to control nitrogen compounds in finished products.

Working range Total Sulfur: 0.3 – 100 mg/kg
Boiling range: 25 – 400 °C
Viscosities of samples: 0.2 – 20 cSt (mm2/s) at room temperature
Sample types: Naphthas, Distillates, Oils

EST analytical solution:
EST analytical offers the NexiS and TX 7000 series and combined instrument configurations like TN/TS NexiS and TN/TS 7000 models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations. The use of boat inlet technique for the NexiS models is recommended when analyzing high boiling point and viscous samples.

Organic chlorines do not occur naturally in crude oil. When present, they result from contamination in some manner, such as disposal of chlorinated solvent used in many dewaxing pipeline or other equipment operations.

Organic Chlorine species are potentially damaging to refinery processes. Hydrochloric acid can be produced in hydrotreating or reforming reactors and the acid accumulates in condensing regions of the refinery. Unexpected concentrations of organic chlorides cannot be effectively neutralized and damage can result. Organic chlorides are not known to be naturally present in crude oils and usually result from cleaning operations at producing sites, pipelines, or tanks. It is important for the oil industry to have common methods available for the determination of organic chlorides in crude oil, particularly when transfer of custody is involved.

Organic Chlorine present in the crude oil (for example, methylene chloride, perchloroethylene, etc.) is usually distilled into the naphtha fraction. Some compounds break down during fractionation and produce hydrochloric acid, which has a corrosive effect. Some compounds survive fractionation and are destroyed during hydro-treating (desulfurization of the naphtha).

Other halides can also be used for dewaxing crude oil; in such cases, any organic halides will have similar impact on the refining operations as the organic Chlorines.

ASTM D4929 method Procedure B covers the determination of organic Chlorine in the washed naphtha fraction of crude oil by oxidative combustion followed by microcoulometric titration.

EST analytical solution:
EST analytical offers Total Chlorine the NexiS and the TX 7000 series models with oxidative microcoulometric titration and combined instrument configurations like TN/TX NexiS and TS/TX NexiS models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations for trace level Total Chlorine analysis.

EST analytical solution:
To comply with ASTM D5194 method, EST analytical offers the NexiS and 7000 Total Sulfur microcoulometric analyzer models with syringe liquids sample introduction module. Fully automated analysis the 7000 model liquids autosampler configurations supported with temperature controlled sample trays can be applied.

The Total Sulfur content in automotive fuels is a key parameter when undertaking process/quality control analyses and for ensuring compositional specifications in finished refinery products are met. Sulfur components in process feeds may damage the catalyst performance in refinery processes, so lowering the refinery efficiency and profitability. Additionally, the Total Sulfur content in products like automotive fuels is subjected to restrictions by regional and international regulations, such as the Tier 3 program, and must therefore be monitored using reliable methods and instrumentation. The American Standardization of Testing Methods (ASTM) published the ASTM D5453 method specifically for the petroleum industry, covering the determination of the total sulfur content in liquid petroleum products by ultraviolet fluorescence detection.

Working range Total Sulfur: 1.0 – 8,000 mg/kg
Boiling range: 25 – 400 °C
Viscosities of samples: 0.2 – 20 cSt (mm2/s) at room temperature
Sample types: Naphthas, Distillates, Engine Oil, Ethanol, Fatty Acid Methyl Ester (FAME); Engine Fuel such as Gasoline, Oxygen Enriched Gasoline (Ethanol Blends, E-85, M-85, RFG), Diesel, Biodiesel, Diesel/Biodiesel Blends, Jet Fuel

EST analytical solution:
EST analytical offers the TS NexiS and TS 7000 series models and combined instrument configurations like TN/TS NexiS and TN/TS 7000 models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations. The use of boat inlet technique for the NexiS models is recommended when analyzing high boiling point and viscous samples.

Many type of Nitrogen compounds can contaminate refinery catalysts and tend to be the most difficult class of compounds to hydrogenate. The Nitrogen content remaining in the product of a hydrotreator is a critical measure of the effectiveness of the hydrotreating process. In lubricating oils the concentration of Nitrogen is a measure of the presence of Nitrogen containing additives. This test method is intended for use in production plant control (QC) and in research applications.

This test method covers the determination of Nitrogen in liquid hydrocarbons, including petroleum process streams and lubricating oils in the concentration range from 40 mg/kg to 10,000 mg/kg Nitrogen. For light hydrocarbons containing less than 100 mg/kg Nitrogen, ASTM D4629 can be more appropriate.

Working range Total Nitrogen : 40 – 10,000 mg/kg
Sample types: Lubricating Oils, Liquid Hydrocarbons

EST analytical solution:
EST analytical offers the TS NexiS and combined instrument configurations like TN/TS NexiS with boat inlet technique and configured as semi-automatic or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations.

EST analytical solution:
To comply with ASTM D5808 method, EST analytical offers the NexiS and 7000 series models Total Sulfur microcoulometric analyzer models with syringe liquids sample introduction module. Fully automated analysis the 7000 model liquids autosampler configurations supported with temperature controlled sample trays can be applied.

This test method is withdrawn in 2015 but covers the determination of Total Nitrogen (organic and inorganic) in aromatic hydrocarbons, their derivatives and related chemicals. This test method is applicable for samples containing nitrogen from 0.2 to 2 mgN/kg, but has been replaced by Test Method ASTM D7184. For higher Nitrogen concentrations refer to Test Method ASTM D4629.

EST analytical solution:
EST analytical offers the TN NexiS and TN 7000 series models and combined instrument configurations like TN/TS NexiS and TN/TS 7000 models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations for this ultra trace level Total Nitrogen analysis.

The ASTM D6667 test method is applicable for the determination of Total Sulfur in Gas/LPG samples, for fuel purposes, contributes to SOx emissions and can lead to corrosion in engine and exhaust systems. Some process catalysts used in petroleum and chemical refining can be poisoned by sulfur bearing materials in the feed stocks. This test method can be used to determine Sulfur in process feeds, to measure Sulfur in finished products, and can also be used for compliance determinations when acceptable to a regulatory authority.

Due to increasingly stringent legislation, car fuels have to be desulfurized to levels below 10 ppm, minimizing negative effects on the environment. Sulfur-containing emissions contribute to acid deposition (‘acid rain’).

This test method covers the determination of total volatile Sulfur in gaseous hydrocarbons and liquefied petroleum (LP) gases. It is applicable to analysis of natural, processed, and final product materials. Precision has been determined for Sulfur in gaseous hydrocarbons in the range of 1 mg/kg to 100 mg/kg and for Sulfur in LP gases in the range of 1 mg/kg to 196 mg/kg

Sample types: Gaseous Hydrocarbons, Natural Gas, LPG
Working range LPG: 1 – 196 mg/kg
Working range Gaseous hydrocarbons: 1 – 100 mg/kg

EST analytical solution:
The EST analytical NexiS and TS 7000 series models Total Sulfur analyzers are fully compliant with the ASTM D6667. Full automated analysis can be achieved with the GM 7000 Gas & LPG sample introduction module connected to one of the above analyzer models.

EST analytical solution:
EST analytical offers the NexiS and TX 7000 series models Total Chlorine analyzer with boat inlet technique to test the Chlorine content of coal samples.

This test method covers the determination of sulfur in aromatic hydrocarbons, their derivatives, and related chemicals. This test method is applicable to samples with sulfur concentrations to 10 mg/kg. The limit of detection (LOD) is 0.03 mg/kg S and the limit of quantitation (LOQ) is 0.1 mg/kg S. With careful analytical technique, this method can be used to successfully analyze concentrations below the current scope.

The American Standardization of Testing Methods (ASTM) published the ASTM D7183 method specifically for the petrochemical industry, covering the determination of the total sulfur content in aromatic hydrocarbon products by oxidative combustion followed by Ultraviolet Fluorescence detection.

Working range Total Sulfur : 0.5 – 10 mg/kg
Boiling range : 25 – 400 °C
Sample types: Aromatic hydrocarbons such as benzene, ethylbenzene but also pentane (C5) type of samples

EST analytical solution:
EST analytical offers the NexiS and TS 7000 series models and combined instrument configurations like the NexiS and TN/TS 7000 models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations for this ultra trace level Total Sulfur analysis.

This test method is useful to detect and quantify Nitrogen-containing compounds at a concentration of 0.1 to 1.2 mg N/kg in light aromatic hydrocarbons used or produced in manufacturing process. These Nitrogen-containing compounds are undesirable in finished aromatic products and may be used in setting specification for determining the Total Nitrogen content in aromatic hydrocarbons.
ASTM D7184 requires the use of reduced pressure at the detector. Loss of vacuum or pressure fluctuations impact the sensitivity of the detector and the ability to determine Nitrogen concentrations less than 1 mg N/kg.
This test method covers the determination of Total Nitrogen in aromatic hydrocarbons, such as benzene, toluene, and xylene and it is applicable for samples containing Nitrogen from 0.1 to 1.2 mg N/kg. For higher Nitrogen concentrations refer to Test Method ASTM D4629. With careful analytical technique, this method can be used to successfully analyze concentrations below the current scope.

Working range Total Nitrogen : 0.1 – 1.2 mg/kg
Boiling range : 25 – 400 °C
Sample types: Aromatic hydrocarbons such as benzene, ethylbenzene but also pentane (C5) type of samples

EST analytical solution:
EST analytical offers the NexiS and TN 7000 series models and combined instrument configurations like the NexiS and TN/TS 7000 models with semi-automatic syringe or fully automatic liquids injection through HR 7000 models Liquids Autosampler configurations for this ultra trace level Total Nitrogen analysis.

EST analytical solution:
To comply with ASTM D7457 method, EST analytical offers the NexiS and 7000 Total Chlorine microcoulometric analyzer models with syringe liquids sample introduction module. Fully automated analysis the 7000 model liquids autosampler configurations supported with temperature controlled sample trays can be applied.

This test method covers the determination of total volatile Sulfur in gaseous hydrocarbons, Liquefied Petroleum Gases (LPG) and Liquefied Natural Gas (LNG). It is applicable to analysis of natural gaseous fuels, process intermediates, final product hydrocarbons and generic gaseous fuels containing sulfur in the range of 1 to 200 mg/kg.

EST analytical solution:
EST analytical offers the NexiS and TS 7000 Total Sulfur analyzers. Fully compliant with the ASTM D7551 method. Full automated analysis can be achieved with the GM 7000 Gas & LPG sample introduction module connected to one of the above analyzer models.

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