Archives July 2022

Cyclopentane, as a foaming agent and solvent, has brought many conveniences to our life. Cyclopentane can replace freon and be widely used in refrigerators, insulation materials for freezers and foaming agents for hard PU foam. It can also be used as a solvent for solution polymerization such as polyisoprene rubber and a solvent for cellulose ether. Cyclopentane, as a blowing agent in Polyurethane (PU) foams, is the most important raw material for high-performance insulation in refrigerators. It allows for a high energy efficiency, CO2 reduction and cost savings. At the same time, Cyclopentanes enable a particularly thin insulation for maximum volume utilisation.

Foaming technology is common in every refrigerator, and foaming materials are also very important, which are reflected in heat preservation, noise reduction, more constant box temperature and faster freezing time. There are only four kinds of foaming material technologies used in a refrigerator. The first is monochloroethane, which is the most primitive foaming process. Up to now, it can also be said to be a relatively backward foaming process. The thermal insulation performance of this foaming material is actually good. But there are two obvious shortcomings. One pollutes the atmosphere, the other is easy to crack. Therefore, internationally, the Montreal agreement clearly requires developed countries to completely ban it in 2010. Developing countries are allowed to use it until 2040. Our country has made it clear that the total phase out will be completed ten years ahead of schedule by 2030.

The second kind of Cyclopentane foaming, as a second-generation foaming technology, is used to replace monofluorodichloroethane, which is very good in environmental protection and is not easy to crack.

The third is 245fa mixed foaming agent, which initially aims to solve the problem of the lack of thermal insulation performance of cyclopentane foaming technology, and makes a balance between thermal insulation performance and environmental protection, which belongs to a transitional stage.

The fourth is HFO foaming agent, which is excellent in thermal insulation and environmental protection, and is not easy to crack. It is a luxury to use in refrigerators.

Cyclopentane is commonly used in household appliance foaming materials, and the GWP value of cyclopentane is very small. Halogen free, short life in the atmosphere, easy to decompose safely, and will not destroy the ozone layer. The thermal conductivity of gas phase is small. It can meet the technical requirements of most household appliances for thermal insulation performance.

Cyclopentane is flammable and explosive, with an explosion limit of (1.4-8.0)%. It is listed as a class a class B fire-fighting object in fire fighting. Cyclopentane is also a volatile organic compound, with a volatile amount of 8.5kg/m per hour, with a faint pungent smell. Therefore, there are strict requirements for production equipment, workshops, transportation and storage, as well as higher requirements for the quality and safety of enterprise employees.

Cyclopentane itself has low toxicity and deasterification function. Once it contacts the skin or splashes into the eyes, it should be immediately cleaned with clean water. Once cyclopentane leaks, it should be diluted and dispersed with inert gas nitrogen immediately. The above is the knowledge sharing on cyclopentane foaming process sorted out by Junyuan Petroleum Group and I hope it will be helpful to you!

Refrigerant refrigerant, also known as refrigerant, snow kind. In the refrigeration system, it is vaporized by the energy absorbed by the cooling medium in the evaporator, and the heat is transferred to air and water in the condenser to condense. The increasing consumption of refrigerants in China also drives the demand for refrigerants. Another point is that the state promotes fluorite to be a strategic resource for protective development. Combined with these reasons, the price of refrigerants is gradually rising.

At present, there are more than 80 kinds of substances used as refrigerants, including ammonia, freon-12, Freon-22, R-134a, r-404a refrigerant, R-410A refrigerant, azeotropic refrigerant and hydrocarbon refrigerant. Previously, with regard to the impact on the ozone layer, the production of CFC substances such as R11, R12, R113, R114, r115, R502 and R22 in Freon was restricted.

In the early days, most refrigerants were flammable or toxic, and some accidents often occurred due to high pressure. The history of isobutane R600a refrigerant development appeared in the middle of the 19th century. Mechanical refrigeration, using ether as refrigerant, is a steam compression system. Carbon dioxide (CO2) and ammonia (NH3) were first used as refrigerants in 1866 and 1873, respectively. Other chemicals include chemical cyanogens (petroleum ether and naphtha), sulfur dioxide (r-764) and methyl ether, which have been used as refrigerants for vapor compression. Its application is limited to industrial processes. Most foods are still preserved with ice collected in winter or prepared industrially.

R290 refrigerant and propane refrigerant are hydrocarbon refrigerants, which have no damage to the ozone layer and have a very small greenhouse effect. They are today’s environmentally friendly refrigerants. From the perspective of environmental protection, almost all countries in the world have no restrictions on the use of R290 refrigerant in the initial installation of new refrigeration equipment and after-sales maintenance. The product is mainly used to replace R22 and R502 refrigerants in low-temperature refrigeration equipment; Because R290 is flammable, it is usually only used in low-temperature refrigeration equipment with less liquid filling, or as a component of low-temperature mixed refrigerant; R290 is compatible with traditional lubricants. R290 refrigerant cylinders for storage and transportation are pressurized containers, which are flammable and explosive. They should be stored away from kindling and heat sources to avoid direct exposure to the sun. They are usually stored in a cool, dry and ventilated warehouse; Handle with care to prevent damage to steel cylinders, valves and other accessories. Matching refrigerant oil for the refrigerant oil used with R290 refrigerant, it should follow the recommendations of the refrigeration compressor and refrigeration (air conditioning) equipment manufacturers, or determine to use the refrigerator lubricating oil with the same design requirements according to the specific conditions of the refrigeration compressor and refrigeration equipment, that is, select the equivalent refrigerant oil.

The refrigerant in the refrigerator is fluorinated quantitatively. Use a quantitative liquid dispenser to add fluorine according to the marked amount. When adding fluorine, feel whether the air return pipe feels cool by hand. The air return pipe is very cold or slightly dewy, and the evaporator is basically hung with frost. When filling, first add less fluorine than the original amount, let it run, wait until the evaporator is full of frost, and finally add it until the return pipe only condenses. In general, the steps of adding fluorine to the refrigerator are very simple. Vacuum, draw out the air inside, add fluorine after pumping, and then seal it.

The use of new environmentally friendly refrigerants does not destroy the ozone layer, and the refrigeration efficiency is higher than before. The international community has also begun to use emerging hydrocarbon refrigerants, which fully meet the international standards for energy conservation, environmental protection and emission reduction. They are currently the international ideal refrigerants.

Physical Properties The boiling points of the pentane isomers range from about 9 to 36 °C. As is the case for other alkanes, the more branched isomers tend to have lower boiling points.

Usually, n-Pentane is used as a refrigeration or air conditioning substance, effectively replacing substances such as fluorinated hydrocarbons and ammonia. Here are some of its potential uses: refrigerant R601, non-polar solvent polyethylene process medium, how to use Isopentane? Isopentane is widely used. Firstly, it is an important refrigerant, which is used as the mixed refrigerant component of condensation inducer and LNG in LLDPE unit of olefin plant; Used for blending octane number of oil products;

Usage: isopentane is widely used. First, it is an important refrigerant of olefin unit, condensation inducer of LLDPE unit and LNG mixed refrigerant components; Used for blending oil octane number; It is widely used in organic synthesis reactions and the separation and purification of organic compounds; Secondly, isopentane dehydrogenation can be made of isoprene and isoprene, and isopentanol is obtained by chlorination and hydrolysis. It is also an important raw material for organic synthesis. Isopentane can also be used with n-pentane in EPS (expandable polystyrene) blowing agent, or with cyclopentane as rigid polyurethane blowing agent. It is mainly used in organic synthesis and also as a solvent.

Cyclopentane, as a blowing agent in Polyurethane (PU) foams, is the most important raw material for high-performance insulation in refrigerators. 

Pentane, C₅H_12, is a clear colorless liquid with a petroleum-like odor. It belongs to the organic class alkanes, and is naturally present in crude oils and condensates. It is a component of some fuels and is employed as a specialty solvent in the laboratory.

The boling point 36°C/97°F, and the vapors are heavier than air. Both the liquid an the vapor are flammable.

The phase diagram of pentane is shown below the table.

Chemical, physical and thermal properties of pentane:
Values are given for liquid at 25^oC /77^oF / 298 K and 1 bara, if not other phase, temperature or pressure given.

Density and specific weight of liquid pentane at varying temperature and atmospheric pressure, SI and Imperial units:

Density units conversion of Pentane:

kilogram/cubic meter [kg/m³] = gram/liter [g/l], kilogram/liter [kg/l] = gram/cubic centimeter [g/cm³]= ton(metric)/cubic meter [t/m³], once/gallon(US liquid) [oz/gal(US liq)] pound/cubic inch [lb/in³], pound/cubic foot [lb/ft³], pound/gallon(UK) [lb/gal(UK)], pound/gallon(US liquid) [lb/gal(US liq)], slug/cubic foot [sl/ft³], ton(short)/cubic yard [ton(short)/yd³], ton(long)/cubic yard [yd³]

• 1 g/cm³ = 1 kg/l = 1000 kg/m³ = 62.428 lb/ft³ = 0.03613 lb/in³ = 1.9403 sl/ft³ = 10.0224 lb/gal(UK) = 8.3454 lb/gal(US liq) = 0.5780 oz/in³ = 0.7525 ton(long)/yr³
• 1 g/l = 1 kg/m³ = 0.001 kg/l = 0.000001 kg/cm³ = 0.001 g/cm³ = 0.99885 oz/ft³  = 0.0005780 oz/in³ = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft³ = 3.6127×10-5 lb/in³ = 1.6856 lb/yd³ = 0.010022 lb/gal(UK) = 0.0083454 lb/gal(US liq) = 0.0007525 ton(long)/yd³ = 0.0008428 ton(short)/yd³
• 1 kg/l = 1 g/cm³ = 1000 kg/m³ = 62.428 lb/ft³ = 0.03613 lb/in³ = 1.9403 sl/ft³ = 8.3454 lb/gal(US liq) = 0.5780 oz/in³ = 0.7525 ton(long)/yr³
• 1 kg/m³ = 1 g/l = 0.001 kg/l = 0.000001 kg/cm³ = 0.001 g/cm³ = 0.99885 oz/ft³  = 0.0005780 oz/in³ = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft³ = 3.6127×10-5 lb/in³ = 1.6856 lb/yd³ = 0.010022 lb/gal(UK) = 0.008345 lb/gal(US liq) = 0.0007525 ton(long)/yd³  = 0.0008428 ton(short)/yd³ 
• 1 lb/ft³ = 27 lb/yd³ = 0.009259 oz/in³ = 0.0005787 lb/in³ = 16.01845 kg/m³ = 0.01602 g/cm³  = 0.1605 lb/gal(UK) = 0.1349 lb/gal(US liq) = 2.5687 oz/gal(UK) = 2.1389 oz/gal(US liq) = 0.01205 ton(long)/yd³ = 0.0135 ton(short)/yd³
• 1 lb/gal(UK) = 0.8327 lb/gal(US liq) = 16 oz/gal(UK) = 13.323 oz/gal(US liq) = 168.179 lb/yd³ = 6.2288 lb/ft³ = 0.003605 lb/in3 = 0.05767 oz/in³  = 99.7764 kg/m³ = 0.09977 g/cm³  = 0.07508 ton(long)/yd³ = 0.08409 ton(short)/yd³
• 1 lb/gal(US liq) = 1.2009 lb/gal(UK) = 19.215 oz/gal(UK) = 16 oz/gal(US liq) = 201.97 lb/yd³ = 7.4805 lb/ft³ = 0.004329 lb/in3 = 0.06926 oz/in³  = 119.826 kg/m³ = 0.1198 g/cm³  = 0.09017 ton(long)/yd³ = 0.1010 ton(short)/yd³
• 1 lb/in³ = 1728 lb/ft³ = 46656 lb/yd³ = 16 oz/in³ = 27680 kg/m³ = 27.680 g/cm³  = 277.419 lb/gal(UK) = 231 lb/gal(US liq) =4438.7 oz/gal(UK) = 3696 oz/gal(US liq) = 20.8286 ton(long)/yd³ = 23.3280 ton(short)/yd³
• 1 oz/gal(UK) =  0.8327 oz/gal(US liq) = 6.2360 kg/m³ = 6.2288 oz/ft³ = 0.3893 lb/ft³ = 10.5112 lb/yd³
• 1 oz/gal(US liq) = 1.2009 oz/gal(UK) = 7.4892 kg/m³ = 7.4805 oz/ft³ = 0.4675 lb/ft³ = 12.6234 lb/yd³
• 1 sl/ft³ = 515.3788 kg/m³ = 514.7848 oz/ft³ = 0.2979 oz/in³ = 32.1741 lb/ft³ = 82.645 oz/gal(UK) = 68.817 oz/gal(US liq) 
• 1 ton(long)/yd³ = 1.12 ton(short)/yd³ = 1328.94 kg/m³ = 0.7682 oz/in³ = 82.963 lb/ft³ = 2240 lb/yd³ = 2.5786 sl/ft³ = 13.319 lb/gal(UK) = 11.0905 lb/gal(US liq)
• 1 ton(short)/yd³ = 0.8929 ton(long)/yd³ = 1186.55 kg/m³ = 0.6859 oz/in³ = 74.074 lb/ft³ = 2000 lb/yd³ = 2.3023 sl/ft³ = 11.8921 lb/gal(UK) = 9.9023 lb/gal(US liq)

Pentane Phase Digaram

When it comes to Isohexane, I believe many chemical workers know it well, but as people who have not been in this industry, they are very strange. In fact, hexane can be found in cleaning and aerosol used in our life. Isohexane is closely related to our life. Now let’s take a look at Isohexane.
Isohexane, also known as dimethylpentane, is a commonly used chemical raw material. Its chemical properties are mainly soluble in ethanol, ether, benzene and other organic solvents. It is precisely with one property that Isohexane is used in various industries.

Here are some examples of Isohexane closely related to our daily life

1. Cleaning industry

Isohexane is an alkane solvent oil. Through hydrofining process, it has the characteristics of low aromaticity, low distillation, narrow process, colorless and non-toxic. In the cleaning agent industry, Isohexane is mainly used for cleaning precision instruments, such as circuit boards, mobile phones and other electronic products, as well as clothing cleaning agents. Isohexane will not be absorbed into the human body through the respiratory tract, skin and gastrointestinal tract, resulting in dizziness and anesthesia.

2. Use of aerosol

Aerosol is a kind of aerosol commodity produced in modern fine chemical industry. It is small, easy to carry, simple to use, and the ejected materials are very fine and evenly distributed, which can give full play to the application effect. Among them, the raw material for making aerosol contains Isohexane.

3. Gas chromatography analysis

Gas chromatography analyzer uses a high-efficiency physical separation technology, which is used in analytical chemistry and combined with appropriate detection means to become chromatographic analysis. The separation principle of chromatography is to separate various substances by using the difference of distribution coefficient, adsorption capacity and other affinity in two phases. Among them, Isohexane is used to detect the gas chromatographic analysis standard.

4. Coating industry

Isohexane is widely used in the paint industry, mainly as an extraction diluent because of its good performance, good solubility and good safety
Through the above introduction to you, you may have a further understanding of Isohexane. In fact, there are many roles that Isohexane plays in our life, which are closely related to our life.

On the morning of July 22, a group of 5 graduate students majoring in Applied Chemistry from Ocean University of China came to our company for exchange and visit. Sun peisheng, the assistant general manager of the company, Wei fuchang, the director of the production and operation center, and chen huimin, the manager of the general office, attended the exchange.

Chen Huimin extended a warm welcome to the exchange students of Ocean University of China and introduced the company in detail. The graduate students listened carefully to the introduction and watched the company’s promotional videos. Wei fuchang led the exchange students to visit the factory and gave relevant explanations. Sun Peisheng had in-depth exchanges with students in the company’s products, research directions, cooperation fields and other aspects. This activity created opportunities for communication and learning between the company and the school, and laid a good foundation for the next step of school and enterprise cooperation.

Dongying Liangxin Petrochemical Technology Development Limited Company

Show Ambition, Forge Ahead with Innovation, Review and Forge Ahead

>From July 15 to 17, Junyuan Petroleum Group’s 2022 semi annual work report meeting was held in Qingdao. The meeting was presided over by Qichunxiao, General Manager of Junyuan Petroleum Group of companies, and attended by more than 30 people, including Chairman Miao Guangfa, members of the company’s leading group, senior managers, department head level managers, and model worker representatives. All staff of Xinjiang Liangxin Petrochemical attended the meeting via video network.

At the meeting, general manager Qichunxiao, senior leaders and department heads made work reports respectively, and leaders in charge of each department made comments. The meeting comprehensively summarized the work of the first half of the year, studied and analyzed the problems in production and operation, and further clarified the work objectives of the second half of the year. Finally, Miao Guangfa, chairman of Junyuan Petroleum Group of Companies, made an important speech.

Miao Guangfa, chairman of the board, pointed out in his speech that 2022 is a year of breakthrough development for the company. In the first half of the year, we withstood the pressure of shrinking traditional businesses and declining economic benefits, withstood the pressure of safety and environmental protection inspections at all levels, overcame the impact of many unstable factors brought about by the “COVID-19” and the “economic crisis”, maintained the bottom line, stabilized the overall situation, and made steady progress in all work. In 2022, facing the new normal of economic development, we adhered to the project construction as the basic path of development, completed the construction and put into use of new power boilers, completed the construction and put into use of important facilities such as central control room, laboratory, power distribution room and fire pump room, completed the overall relocation of office buildings and dormitory buildings, completed the overall improvement of the company’s environment, and completed the construction of several technological transformation projects, Constantly inject new vitality into the development of the company and usher in a broader development space. The second half of the year is the key period for the project to “blossom and bear fruit” and “mature melon and land”. We must effectively integrate the ideas and measures of various work into the overall planning of the company’s development, integrate our energy and focus into the specific arrangement of work, see action and results in key work, and strive to create a new situation of leapfrog development.

Qi Chunxiao, the general manager, pointed out at the meeting that we should find gaps and fill in weaknesses through reporting on our work, and be soberly aware of our imperfections compared with the development situation of the company, the development situation of the industry, and the expectations of the majority of employees; We should summarize good experience and practices, find out problems and deficiencies, conduct comprehensive and objective analysis and summary, and constantly identify gaps and learn from each other. Through reporting on work, we should increase vitality and motivation, further strengthen the development consensus, glow the enthusiasm of officers, and earnestly achieve unity of purpose, the same direction of goals, and the same efforts of all staff; We should play a game of chess together, with no division of labor. We should always keep one voice and one pace, and think and work hard in one place. We should enhance the awareness of shouldering heavy responsibilities through reporting on work. As the backbone, leading cadres are the decisive factor, and we should bear the responsibility in the spirit of “nailing nails, bearing burdens, and buttoning”. We should strengthen the systematic concept through reporting, comprehensively analyze and summarize the work ideas, methods and requirements, and use the systematic concept and innovative thinking to plan and promote the work, so as to realize the transformation from “ten fingers exerting force” to “gathering fingers into fists”, and from “fighting alone” to “coordinated combat”.

Qi Chunxiao required that all departments should earnestly follow the work objectives at the beginning of this year, change their thoughts, cheer up, perform their duties and missions with the several requirements put forward by the chairman, refresh themselves, speed up, concentrate, and devote themselves to work with a new spirit and work style.

The market scale of n-Pentane continues to expand, and the separation and purification cost of the industry is high. n-Pentane, with the chemical formula C5H12, has a colorless liquid appearance and a slight mint flavor. n-Pentane has stable chemical properties. It does not react with acids and bases under normal temperature and pressure. It is insoluble in water and soluble in ethanol, ether, acetone, chloroform and other organic solvents. It can be burned. Mixing with air, it has explosion risk, and burning emits carbon dioxide and water.

n-Pentane is widely used as a solvent, foaming agent, electronic cleaning agent, chemical raw materials, etc. As a solvent, n-Pentane can be used to produce artificial ice, anesthetics, fuels, etc; As foaming agent, n-Pentane can be used to produce polystyrene foam and other foamed plastics; As a chemical raw material, n-Pentane can be used to produce isopentane, pentanol, butane, propylene, butene, isobutene and other chemicals; In addition, n-Pentane can also be used as a reference liquid for gas chromatography, for preparing standard gas and correction gas, and as a molecular sieve desorption agent.

There are many preparation processes for n-Pentane, mainly using C5 fraction obtained from catalytic cracking of petroleum as raw material, through hydrogenation, rectification, separation and other processes. n-Pentane is a kind of pentane. Pentane has three isomers, namely n-Pentane, isopentane and neopentane. In C5 fraction, pentane content is about 15%. In pentane, the content of n-Pentane is high. However, due to the small boiling point difference between n-Pentane and Isopentane, it is difficult to separate and purify n-Pentane, so the production cost of n-Pentane is high.

According to the report on the development prospects of China’s n-Pentane industry and suggestions on investment risk avoidance from 2021 to 2025 released by the New World Chemical Research Center, in China and the global market, n-Pentane producers are mainly Shell, Junyuan Petroleum Group, ExxonMobil, Phillips 66, TREC, etc. these well-known producers are large petrochemical enterprises, with perfect upstream and downstream layout of the industrial chain, with scale, capital, technology Cost control and other advantages.

Xiuwen Yang, sales director at Junyuan Petroleum Group, said that n-Pentane is an organic compound, which belongs to alkanes. It can be widely used in the downstream and can produce a variety of chemical products. However, the separation and purification of n-Pentane are difficult and the production cost is high. In the future, the industry needs to continue to improve the production process and energy consumption, so as to reduce the production cost and further expand its application range. In the global market, the leading production enterprises in the n-Pentane industry are mainly petrochemical enterprises with large scale, complete industrial chain layout and high technical level, which are difficult to compete with other relatively small enterprises.

In the afternoon of July 15, Junyuan Petroleum Group organized a “trip to Qingdao”, and the personnel who participated in the first half of the annual work report went to the military civilian integration zone of the West Coast new area of Qingdao to visit and study.

On the morning of July 13, Miao Jin, Dean of the school of Economics and Management of Dongying Vocational College of Science and Technology, and his delegation came to our company for exchange and investigation. Chen Huimin, Manager of the General Office of the company, participated in this exchange activity. Chen Huimin extended a warm welcome to the leaders of the college, and the two sides had an in-depth exchange and Discussion on how to deepen school and enterprise cooperation. Miao Jin expressed the hope to reach long-term practical training friendly cooperation with the company.

Through this exchange activity, the communication and understanding between the company and the school have been strengthened, the friendly relationship between the two sides has been enhanced, and the foundation has been laid for further cooperation.

Dongying Liangxin Petrochemical Technology Development Limited Company, a subsidiary of Junyuan Petroleum Group, has been engaged in the export of butane, pentane, hexane and heptane since 2006. More than 15 years of experience enables you to rest without worrying about goods transportation.

Major customers include PetroChina, Sinopec, Shell, BASF, Saudi Basic Industries Corporation, China Coal, geothermal power plants and other foaming plants.
SGS, CIQ, BV, Rosh, ISO certificates are available.
Production Capacity: 1000,000 tons / year
After Sales Service: Dongying Liangxin Petrochemical Technology Development Limited Company enjoys a good reputation in the alkane industry. You can trust us completely.
Quality Assurance
As a quality-oriented company, we spare no effort to provide customers with the best range of products. In addition, we have hired a team of quality analysts to ensure that our industrial chemicals series meet international standards. Our quality analyst team maintains strict monitoring of the handling of chemicals and ensures that the range of various parameters is checked before sending chemicals to the client. The various parameters of our csindustrial chemical series tests are as follows:
Pure
PH value
Precise composition
For more information: info@junyuanpetroleumgroup.com

In order to ensure that the fire sprinkler equipment can be put into operation in good condition, on the morning of July 9, all the staff of the storage and transportation team of the quality control operation center carried out fire sprinkler inspection and dredging of sprinkler heads for the 3# Spherical storage tank area and the East-West loading and unloading station. With the arrival of hot summer, the production work is facing greater tests. The materials stored in the spherical tank area of the company are liquid hydrocarbons with light density and high pressure.

Chemical solvent storage tank is a container for storing solvent products. It is the main equipment of petrochemical enterprises. It is mainly used to store pentane, hexane, heptane, petroleum ether and other chemicals and solvents. The tank farm fire has the characteristics of high explosion risk, easy to form large-area combustion, fast combustion speed, great difficulty in extinguishing and great loss. Fire, explosion, poisoning, asphyxiation and other accidents are very likely to occur during the inspection and maintenance of oil tanks. The oil storage tank farm is a typical major industrial hazard source, so it is necessary to conduct a safety analysis on the hot work maintenance of the oil storage tank and put forward corresponding safety measures. Because the safety situation of the tank farm directly affects the safety production and environmental protection of enterprises.

As the temperature rises, the pressure in the storage tank also rises, which has a lot of impact on production safety. In order to ensure the safety of high temperature operation in summer, it is necessary to use fire sprinkler to spray water to cool the spherical storage tank with high pressure. The fire sprinkler inspection and dredging work created conditions for the cooling work of the device and ensured the safe production in summer.

Xiaoqing Zhang, Quality Control and Transportation Center