Archives February 2021

Once again, everything will be renewed. On the occasion of leaving the old to welcome the new, Junyuan Petroleum Group would like to express its heartfelt thanks and sincere wishes to all the employees and their families working in various positions, and extend New Year greetings with high respect to all the customers and people who care about and support the development of the company!

In 2020, we have lived a full and firm life. In the past year, there were difficulties, happiness, challenges and opportunities. In the past year, we overcame all kinds of challenges, accelerated the pace of transformation and upgrading, promoted the smooth and orderly operation of all work, and achieved high-quality development of the enterprise.
In 2020, with full working enthusiasm and enterprising spirit, we effectively carried out all kinds of work, established and improved various management systems of the company, gradually improved the output and quality, smoothly promoted new projects, smoothly operated safety and environmental protection, continuously improved employees’ welfare, and reserved projects were ready to start. These achievements are the result of all Junyuan people’s indomitable struggle, innovation and selfless dedication. They are the result of everyone rolling up their sleeves and working together! Here, I sincerely thank you for your unremitting efforts and hard work in the past year! You have worked hard!
Looking back on the past years, we are deeply grateful; looking forward to a better tomorrow, we feel excited. At the beginning of the new year, while we share the joy, we should also be soberly aware that there are still many challenges ahead. For Junyuan, 2021 is the key year to clarify the industrial upgrading strategy, optimize the industrial layout and improve the company’s management, and the ice breaking year to consolidate the main business and upgrade to a higher end industry. In the future, every one of us at Junyuan Petroleum Group should face difficulties and challenges with a sense of urgency, a sense of crisis and a sense of responsibility. We should have the confidence and courage to overcome difficulties. We should work together, take responsibility, forge ahead and work hard.
Standing at the new starting point of 2021, we should not forget our original intention, fulfill our mission, unswervingly focus on the established strategy, consolidate and deepen the current achievements, firm our confidence, bravely shoulder the heavy burden, really work hard, and make innovations. Make every effort to do a good job in production safety, solidly promote the construction of new projects, strengthen technical improvement and process optimization, promote the improvement of production capacity and efficiency, strengthen human resource management, enhance the core competitiveness of the enterprise, and realize the leap forward development of Junyuan Petroleum Group!
Standing at a new starting point in 2021, we should seize new opportunities, meet new challenges, and promote the sustainable development of the company with a high sense of mission and responsibility. Because of the same dream, we gather at Junyuan Petroleum Group! We firmly believe that with everyone’s unity, the dream will come true, and Junyuan Petroleum Group’s tomorrow will be more magnificent and brilliant.
Bravery comes when it is hard, and success comes when it is hard. The new year breeds hope; the new year contains strength; the new year has a gratifying situation; the new year is inspiring. Let’s seize the day, live up to our youth, work together with one heart and one mind, forge ahead, and continue to write a new chapter with more high morale, more positive attitude, and more solid steps, so as to create new brilliance together! I can’t say thank you enough for the incredible Junyuan team. I’m truly humbled by and beyond appreciative of your relentless commitment to delighting our customers, dedication to your work, and genuine caring for each other. 2021 is going to be even bigger and better for Junyuan!
Finally, I sincerely wish Junyuan’s partners, customers, and employees a Happy New Chinese Year and joyous, safe, and healthy holiday season!

n-Pentane CAS NO 109-66-0
n-Hexane CAS NO 110-54-3
n-Heptane CAS NO 142-82-5
n-Octane CAS NO 111-65-9

Junyuan Petroleum Group carries n-Pentane, n-Hexane, n-Heptane and n-Octane in packaging sizes ranging from bulk Pentane volumes such as 16 MT ISO Tank to smaller volumes like 125 steel drums. All orders for n-Pentane, n-Hexane, n-Heptane and n-Octane are shipped within three days to cater to customers that desperately need fast delivery timelines.

Pentane, n-

Pentane is introduced to suspension-polymerised polystyrene (PS) beads. Molecular weights in the range of 150,000–250,000 are used. The spherical beads are sieved to a narrow range of diameters, so are not monodisperse. PS beads are allowed to absorb up to 8% by weight of pentane, which is a plasticiser, reducing the glass transition temperature from 100°C to about 60°C . Cigna et al. (1986) used an ultramicrotome to section the pentane-containing beads, and then transmission electron microscopy. Microvoids within them are the sites of the later cell expansion. The surfaces of the beads are coated, typically with less than 0.5% of calcium stearate, to prevent agglomeration.

Expanded polypropylene (EPP) goes through a process of extrusion foaming as small diameter rod, then pelletised into beads, much as most thermoplastics are pelletised prior to injection moulding. Hence the initial production is as described in the last chapter, and high melt strength polypropylene (PP) grades must be used. The blowing agent is probably isopentane or CO₂. Some of the beads have a solid PP outer layer, and their average density is lower than the final EPP mouldings (Beverte, 2004), a disadvantage compared with EPS in that bulky material must be transported to the site of moulding.

Resin and Asphaltene Gravimetric Determination
A 100 mL quantity of n-pentane is added to a pre-weighed sample of approximately 5 g of oil. The flask is shaken well and allowed to stand for 30 min [27,28]. The sample is filtered through a 0.45-μm membrane using minimum rinsing with n-pentane. The precipitate is allowed to dry and then weighed. The weight of the precipitate as a fraction of the initial oil sample weight is reported as the percentage asphaltenes.

The filtrate from the precipitation, the “maltene” fraction, is recovered and made up to 100 mL with n-pentane. A 15-g, 1-cm diameter column of activated silica gel is prepared. The top of the column is protected by a 1-cm layer of sodium sulfate. A 5-mL aliquot of the maltene fraction is loaded onto the column. A 60-mL volume of 1:1 (v:v) benzene:hexane is eluted through the column and discarded. A 60-mL volume of methanol, followed by a 60-mL volume of dichloromethane is eluted through the column and combined. The methanol/dichloromethane fractions are reduced by rotary evaporation and blown down to dryness under nitrogen. The mass fraction of this dried eluent, compensating for the volume fraction used, is reported as the percentage of resins in the sample.

Junyuan Petroleum Group is a leading Pentane foaming agent manufacturer in the world, with a Pentane foaming agent production team of more than 300 employees, 24-hour uninterrupted production, realizing large-scale, mass production, specialization and “Four Modernizations” production.

• Cyclohexane and nitrogen data are from ecoinvent and are adapted to U.S. conditions. Both inputs are ancillary materials.
  **Fuel gas used for energy is created from off-gas produced in the process.
  †Represents ethylene production and octene, hexene, 1-butene, isobutane, and isopentane production which use ethylene as a surrogate.

Solvent carrier for linear low density polyethylene (LLDPE)
n-Pentane is mainly used as carrier solvent for LLDPE. The production of LDPE in China began in the 1960s. By the end of 2000, with the rapid development of China’s light industry and plastic industry, the consumption of LLDPE has increased rapidly. Many enterprises have built more than 10 sets of large-scale and technologically advanced production units through the introduction of foreign technology and equipment, and the production capacity has reached 1.05 million t/ a. in 2007 and 2009, the domestic reconstruction and expansion of LLDPE were carried out, and the production capacity reached 4.142 million t/a by the end of 2009. According to the process requirements of the product, the proportion of n-Pentane per ton of LDPE is generally 0.3%. Therefore, the annual consumption of n-pentane in LLDPE is about 12 KT.

2021/02/08. USD TO CNY TODAY.
Actual USD to CNY exchange rate equal to 6.4514 Chinese Yuans per 1 Dollar. Today’s range: 6.4440-6.4530. Previous day close: 6.4480. Change for today +0.0034, +0.05%.
China Chemical Industry Information reported on February 9: major oil producing countries continue to reduce production, tight supply is expected to continue to strengthen, and the U.S. economic stimulus plan is expected to further boost demand, international oil prices rise for six consecutive years, and Brent returns to the $60 level after more than a year. Gasoline, refinery sales were poor yesterday, the market is expected to rise slightly today. In terms of mixed C5, downstream replenishment has basically ended, and some refineries have limited storage capacity, strong demand for discharge, and poor pull of crude oil. It is expected that today’s China market will be mainly stable, with sporadic rise and fall.
The price of pentane blends (n-Pentane and Isopentane) rose slightly, the price increased by 0.98% on a day-on-day basis compared with the previous day. At present, n-Pentane and Cyclopentane products are in short supply in China market, and there is a short-term shortage situation. In particular, Cyclopentane products, and even some freight forwarding companies have joined the purchasing army to help buyers in the international market find suppliers in the Chinese market. Cyclopentane, as an important basic organic chemical product in the industrial chain, plays an important role in dye, medicine, pesticide and other organic intermediates, and is the source product in the whole industrial chain. Its market trend directly affects the market changes of downstream products, pesticide, medicine and other products or industries. Recently, driven by many favorable factors, the recent shock consolidation pattern has ended, forming a medium and long-term upward trend. Strong raw materials to promote the overall market up. Affected by the high foreign market and the limited domestic resources, China is basically in a stage of solid foundation and staged rise. Domestic production continued to shrink, resulting in market shortage. It is understood that the domestic comprehensive operating rate is less than 45% due to the shutdown maintenance or production reduction of major domestic cyclopentane production enterprises. According to statistics, in addition to the use of self supporting facilities by some enterprises, the domestic market commodity volume fell to a low level again in the current month, accounting for only 30% of the total output. As a result, the normal balance of supply and demand has been broken, and the phenomenon of market shortage once appeared, which has provided a driving force for the future.

Container Loading Supervision by Qingdao Customs

Container Loading Supervision is to verify that the goods are properly handled and secured in the container during loading and unloading operations.

Our daily container loading process is monitored by General Administration of China Customs Qingdao Branch, guaranteeing the container is loaded in its entirety and in a safe and secure manner.

Main checkpoints for Loading Supervision:

Check the container condition

Evaluate the outer/inner packing of the products

Closely monitor the loading process

Verify the quantity in break down

Ensure proper handling of the goods and proper stack in the container

Junyuan offers high performance pentanes, hexanes, heptanes, octanes, and D solvent products for a variety of diverse markets. Each market has unique challenges that require unique product, which is why we have a specialized team of experts for every marekt we serve.

Applications of desulfurization and dearomatization solvent
D20 environmentally friendly solvent oil

Junyuan Petroleum Group‘s D20 environmentally friendly solvent oil is produced from straight run distillate, hydrocracking distillate or low sulfur straight run aviation kerosene by deep hydrofining and fractionation. D20 environmentally friendly solvent oil is based on its performance and advantages
The product has strong solubility and good volatility. The content of saturated hydrocarbon is more than 99%, and the product has good stability. Low sulfur, low aromatic, non-toxic, tasteless. Narrow fraction, can also be customized service. It has strong cleaning power and is compatible with materials
It has the advantages of good adaptability, no pollution to the environment and no destruction of the ozone layer. D20 environmentally friendly solvent oil is an environmentally friendly product. It is suitable for cigarette adhesive, plastic polymerization assistant, textile printing and dyeing, printing, solvent
Ink thinner, metal cleaning agent and other industries. It can also be used as solvent for coating industry and printing and dyeing auxiliaries, or as solvent for aerosol insecticide, liquid mosquito repellent incense, coating industry and printing and dyeing auxiliaries
Base oil for metalworking fluid, coating industry, adhesive industry, aerosol insecticide, metalworking lubrication, deoiling, antirust, clothes dry cleaning oil, liquid electrothermal insecticide, mineral extraction additives, silicone adhesive
Agents, sewage treatment agents, low aromatic printing inks, chemical reaction solvents and carriers, emulsion carriers.

Heptane, with the chemical formula C7H16, is labeled as a straight-chain alkane derived from petroleum. Its roles in industry vary greatly because of its versatile chemical properties.

• As a clear, odorless, liquid hydrocarbon, heptane is best recognized as the standard zero-point for the octane rating scale, which is seen on nearly every gasoline pump worldwide. Heptane readily combusts when placed under the vast amounts of pressure within a gasoline engine.  
• Heptane’s high flammability gives it properties necessary in many industries, including use as fuels. Heptane is a great fuel source for pressurized, outdoor liquid fuel stoves due to its hydrocarbon chemical makeup, which expends vast amounts of heat energy during hydrocarbon combustion.
• Heptane acts as a thinner for rubber cement.
• High schools, colleges, and universities all rely on heptane as a laboratory reagent in chemistry courses thanks to its isomers, which are reliable, nonpolar solvents. Heptane’s reactivity is extremely low with most other chemicals. Substances not readily dissolved in water will break chemical bonds in a heptane solution. An example of heptane’s versatility is the grease test spot in which a material containing a grease, wax, or oily substance is submerged and gently shaken in a heptane solution. This determines the material’s earlier presence of organic compounds.
• Law enforcement and government agencies use heptane as a solvent in processing latent fingerprints. Heptane’s ease of preparation with a ninhydrin reagent protects the clarity and intensity of fingerprints without destroying writing ink. However, if the inks used in printing are not water based, heptane dissolves the ink.
• The vulcanization of rubber utilizes heptane as a compounder. In the commercial manufacture of rubber cement, unvulcanized rubber is placed in a solvent of 70-90% heptane. Different grades of rubber cement are created depending on a higher or lower percentage of heptane within the solvent.

Junyuan Petroleum Group is one of the largest n-Heptane producers in China and a rising star in the speciality solvent industry. You can expect the highest quality products, expedited shipping options for maximum efficiency, and unrivaled personalized customer service. Let our knowledgeable and friendly customer service representatives and accounting staff personalize all your needs by either calling +86 178 1030 0898 or by sending us an email to info@junyuanpetroleumgroup.com.

Sunflower seed oil production does the following manufacturing processes: cleaning of the seeds, grinding of the seeds, pressing and extraction of crude oil from these seeds and then further refining the oil obtained before packaging. A volatile hydrocarbon like n-Hexane or Isohexane is used as a solvent to extract the oil.

6 Processes of Sunflower Oil Production

Cleaning the Seeds
The harvested sunflower oil seeds are passed over magnets to removal any metal traces, and other impurities are being get rid off by cleaning sieve and destoners.  Then the outer covering (hulls) of the seeds are removed to obtain pure seeds.

Grinding the Seeds
The de-hulled seeds are ground into coarse meal to provide a larger surface area to be pressed. Hammer mills or grooved rollers are used to crush the coarse meal into uniform fine particles. Then the meal is heated to enable oil extraction, though impurities are released with oil during this process and such impurities should be removed before the oil is declared edible.

Pressing
The heated meal is fed into a screw press which progressively increases the pressure from sixty kilopascals (kps) to 950kps, 206kps, to 850kps as the meal is passed through a slotted barrel. At the same time, the oil is squeezed out through the slots in the barrel and recovered.

Extraction of the Additional Oil
Volatile hydrocarbon solvents are used to process the remaining oil cake through solvent extraction so as to achieve maximum yields. The most commonly used solvent is hexane which dissolves the oil out of remaining oil cake. The solvent is then distilled out of the oil, passed through the matter and then collected at the bottom.

Removal of Solvent Traces
Around 90% of the volatile solvent left in the extracted oil, evaporates and it’s collected for reuse. Then a stripping column is used to retrieve the remaining solvent. In this process, the oil is boiled by steam and the solvent evaporates, condenses and is collected separately.

Refining of the Oil
Sunflower oil refining involves removal of the bitterness, color and odor. First the oil is heated at temperatures between 40 0C and 85 0C. Then it’s mixed with an alkaline substance like sodium carbonate or sodium hydroxide. The oils are degummed by treating them with heated water at temperatures between 85 0C and 95 0C or with acidified water. This precipitates out most of the gums usually phosphatides. Then centrifugation is done to remove the dregs.

The edible oil used for cooking is obtained by filtering it through activated carbon, activated clay or through fuller’s earth which adsorbs the pigmented substance from the oil. However, the oil intended for salad dressing needs refrigeration. Such oil is obtained through winterizing by rapidly chilling and filtering to remove waxes. This procedure is applied to prevent solidification of the oil in the refrigerator.

The final step involves deodorizing the oil by passing the steam over hot oil placed in a vacuum at temperatures between 225 0C and 250 0C. This allows the volatile components responsible for the taste and odor to evaporate from the oil. One percent citric acid is added to the oil to inactivate any trace metals present, hence preventing oxidation within the oil, thereby prolonging the shelf life of the oil.

PS: Some smaller plants are only press-plants and do not apply the step of hexane extraction. This results in higher oil content in the meal.

By-product in the Process of Sunflower Oil Production

Sunflower oil seed cake is the most obvious waste product of the sunflower seed oil production process. Such oil seed cake is used to manufacture low-grade fertilizer and produce animal feeds. The unwanted by-products are disposed of.

The most common product of the sunflower seed oil making is the oil seed cake/meal, which is usually used to make animal feed and low-grade fertilizer or partly disposed. Sunflower meal is a successful substitute for soybean meal in equal protein diets for ruminant animals, as well as for swine and poultry feed.

3 Kinds of Sunflower Oil Meal

• Meal produced from undehulled seeds, containing around 28% protein and 25%-28% fiber.
• Meal produced from partially de-hulled seeds, containing 35%-37% protein and 18% fiber;
• Meal produced from seeds with 2-step de-hulling process, containing 40%-42% protein and 12%-14% fiber.

The meal composition thus depends on the efficiency of the de-hulling, and the oil content of sunflower meals ranges from 1.5% to 2.5%, depending on oil extraction efficiency and raw materials. Fresh sunflower meal must be dried for optimal storage. It can be ground, broken into small pieces or pelletized for easy handling and storage by processing under high pressure in an pelletizer or extruder, with an addition of proper binder such as molasses, fats, etc.

Lab Grade Chemicals in Bulk
Laboratory Chemicals for Testing – Count on Quality & Consistency

Count on Junyuan Petroleum Group for reliable lab chemicals.
Junyuan Petroleum Group has the following chemicals and supplies you need to for virtually any testing protocol.

🔴 n-Pentane
🔴 Isopentane
🔴 n-Hexane
🔴 Isohexane
🔴 n-Heptane
🔴 n-Octane

Whether you work in an environmental testing lab, waste water testing lab, quality control testing lab or general analytical testing lab, regardless of the industry (pharmaceutical, cosmetic, nutrition, or food & beverage), Junyuan Petroleum Group can satisfy your grading requirements.

Markets Served: Junyuan’s target markets for cGMP monograph chemicals include manufacturers of pharmaceuticals, dietary supplements, functional foods, cosmetics, personal care products, aerospace, electronic and automotive. Junyuan Petroleum Group also serves the analytical laboratories, synthetic organic chemical manufacturers and research organizations with a complete line of analytical solvents suitable for all laboratory applications. Junyuan Petroleum Group also meets the laboratory needs for the aerospace, electronic and automotive industries.

Call Us: +86 178 1030 0898
Email: info@junyuanpetroleumgroup.com

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