{"id":22125,"date":"2026-04-22T10:49:39","date_gmt":"2026-04-22T07:19:39","guid":{"rendered":"https:\/\/www.kianpetroleum.com\/en\/?p=22125"},"modified":"2026-04-22T10:51:27","modified_gmt":"2026-04-22T07:21:27","slug":"butane-gas-analysis-of-khark-petrochemical-en","status":"publish","type":"post","link":"https:\/\/www.kianpetroleum.com\/en\/butane-gas-analysis-of-khark-petrochemical-en\/","title":{"rendered":"Butane Gas Analysis of Khark Petrochemical"},"content":{"rendered":"\t\t
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\"butane
butane gas analysis of khark-petrochemical<\/figcaption><\/figure>

Introduction<\/h2>

Kharg Petrochemical was established in 1967 on Kharg Island with the aim of utilizing associated petroleum gas and preventing its waste. The plant commenced operations in 1969. The feedstock for this complex is sour gas, extracted from offshore and onshore oil fields operated by the Iranian Offshore Oil Company (IOOC), which contains light and heavy hydrocarbons as well as sulfur compounds. Key products of this complex include methanol, propane, butane, pentane, and sulfur. This article focuses on the analysis of Kharg Petrochemical\u2019s butane gas.<\/p>

According to the Kharg Petrochemical website, butane gas produced by this complex is primarily used as fuel and feedstock for olefin units.<\/p>

Analysis of Kharg Petrochemical Butane Gas Parameters<\/h2>

Vapor Pressure at 100\u00b0F<\/h3>

The vapor pressure at 100\u00b0F indicates the volatility of the product and plays a crucial role in safety and equipment selection. This parameter determines how much of the product\u2014in this case, Kharg Petrochemical\u2019s butane gas\u2014will transition into the vapor phase at a specified temperature (100\u00b0F). Utilizing this data allows for the selection of appropriate storage and transportation equipment to prevent potential hazards such as leakage, sudden pressure increases, and damage to industrial systems.<\/p>

Corrosion Number<\/h3>

One of the key parameters in gas analysis is the corrosion number, which indicates the potential damage a gas may cause to a metal strip. This parameter is measured based on the ASTM D1838 standard, where the metal strip used in the test is made of copper.<\/p>

In this test, a copper strip is exposed to butane gas under controlled conditions. After a specified period, the strip is examined for color changes and corrosion levels, and the corrosion number is determined accordingly. According to the analysis report, the corrosion number for butane produced by Kharg Petrochemical is reported as 1a, indicating the high quality of the butane provided by the company.<\/p>

Monitoring the corrosion number is crucial, as gases with high corrosion values can gradually cause significant damage to storage tanks, pipelines, and other infrastructure. Therefore, controlling the corrosion number in gas products is an essential requirement to ensure the safety and longevity of industrial equipment.<\/p>

Non-Volatile Residue (NVR)<\/h3>

Non-Volatile Residue (NVR) refers to the materials that remain as a solid or liquid after the complete evaporation of the volatile portion of butane under standard laboratory conditions. This parameter plays a crucial role in evaluating the purity of butane gas, as a high NVR value can lead to deposits in equipment such as regulators and burners, reduced system efficiency, and even safety issues, particularly in industrial and commercial applications where high purity is essential.<\/p>

To measure the NVR value, butane gas is first liquefied. The liquid is then placed at 100\u00b0F and 1 atmosphere of pressure to allow the volatile portion to fully evaporate. Once the evaporation process is complete, the remaining residue is examined, its mass is measured, and the weight ratio of the residue to the total sample is calculated to determine the NVR value.<\/p>

In this analysis, the NVR value is reported as a maximum of 0.1%, which falls within industrial standard limits.<\/p>

Hydrogen Sulfide and Total Sulfur<\/h3>

According to the analysis report, this product is free of hydrogen sulfide (H\u2082S), and its total sulfur content is reported to be less than 30 ppm (parts per million), indicating the high quality of butane gas produced by Kharg Petrochemical.<\/p>

Reducing sulfur compounds, particularly eliminating hydrogen sulfide, has a direct impact on lowering the corrosive properties of the gas. This is consistent with the low corrosion number (1a), as sulfur compounds\u2014especially H\u2082S\u2014are among the primary causes of metal corrosion. Therefore, controlling the total sulfur content of the product is of great importance.<\/p>

Specific Gravity<\/h3>

Specific gravity is a measure of the ratio of a substance\u2019s density to the density of water at a reference temperature (typically 60\u00b0F). This parameter is dimensionless and indicates whether a substance is lighter or heavier than water.<\/p>

In this analysis, the specific gravity of liquid butane relative to water is reported as 0.58, confirming that liquid butane is lighter than water and floats on its surface. This characteristic is crucial for safety and storage, as in the event of a spill in aquatic environments, butane remains on the water\u2019s surface, allowing for easier containment, collection, and prevention of widespread contamination. Additionally, in industrial processes and transportation, understanding this property helps in the design of appropriate tanks and equipment, ensuring better separation and preventing potential leakage or contamination issues.<\/p>

Hydrocarbons<\/h3>

According to the analysis report of Kharg Petrochemical\u2019s butane gas, this product has a high level of purity, with the total butane content reported at a maximum of 97%. Additionally, pentane and heavier compounds make up a maximum of 2%, while propane and lighter hydrocarbons account for up to 2% of the composition.<\/p>

This composition indicates the high quality of butane gas and its compliance with industrial standards. The low presence of heavier and lighter hydrocarbons ensures that this gas possesses favorable physical and chemical properties, making it suitable for various applications, including fuel and petrochemical feedstock.<\/p>

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Introduction Kharg Petrochemical was established in 1967 on Kharg Island with the aim of utilizing associated petroleum gas and preventing its waste. The plant commenced operations in 1969. The feedstock for this complex is sour gas, extracted from offshore and onshore oil fields operated by the Iranian Offshore Oil Company (IOOC), which contains light and […]<\/p>\n","protected":false},"author":8,"featured_media":22130,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[597],"tags":[620],"class_list":["post-22125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analysis-of-petrochemical-and-refinery-products","tag-butane-gas-analysis-en"],"_links":{"self":[{"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/posts\/22125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/comments?post=22125"}],"version-history":[{"count":4,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/posts\/22125\/revisions"}],"predecessor-version":[{"id":22135,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/posts\/22125\/revisions\/22135"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/media\/22130"}],"wp:attachment":[{"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/media?parent=22125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/categories?post=22125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kianpetroleum.com\/en\/wp-json\/wp\/v2\/tags?post=22125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}