PROCEDURE FOR CARRYING OUT GAS DANGEROUS WORKS IN THE PETROCHEMICAL PRODUCTION

The article discusses the organization of gas hazardous work in petrochemical production

MODERN METHODS OF REACTIVE POWER COMPENSATION IN PETROCHEMICAL PRODUCTION

Electrical circuits of reactive power compensation on the basis of thyristor control circuits in the power supply system of oil refineries are considered. The main advantages, advantages over traditional reactive power compensation systems and directions of introduction into the power supply system of modern production are formulated.

Potential market and impact of clean hydrogen development to 2050 in Vietnam

Hydrogen plays an important role in the energy transition towards a zero-carbon economy. Blue hydrogen and green hydrogen are potential sources to replace fossil materials and fuels in the fields of refining - petrochemical, production of fertiliser, steel, cement, electricity, and transportation. The potential demand for clean hydrogen in these areas has been evaluated along with the impacts and benefits of hydrogen development. Accordingly, the potential hydrogen market can reach an output of 22 million tons/year by 2050. The development of hydrogen in the fields will create new markets with a total value of USD 100 billion in 2035 and USD 1,200 billion in 2050. In terms of the environment, replacing fossil materials and fuels with hydrogen reduces the total national CO2 emissions by 5.4%. In order to develop and complete the hydrogen value chain in Vietnam, it is necessary to set goals and roadmaps along with appropriate policies. Recognising the importance of hydrogen to the operation of the oil and gas and energy sectors in general, the Vietnam Oil and Gas Group (PVN) has developed a scientific research programme on the development of production, storage, transportation, distribution, and efficient use of hydrogen in Vietnam in the 2021 - 2025 period.

Applying a ‘Metabolic Funnel’ for Phenol Production in Escherichia coli

Phenol is an important petrochemical that is conventionally used as a precursor for synthesizing an array of plastics and fine chemicals. As an emerging alternative to its traditional petrochemical production, multiple enzyme pathways have been engineered to date to enable its renewable biosynthesis from biomass feedstocks, each incorporating unique enzyme chemistries and intermediate molecules. Leveraging all three of the unique phenol biosynthesis pathways reported to date, a series of synthetic ‘metabolic funnels’ was engineered, each with the goal of maximizing net precursor assimilation and flux towards phenol via the parallel co-expression of multiple distinct pathways within the same Escherichia coli host. By constructing and evaluating all possible binary and tertiary pathway combinations, one ‘funnel’ was ultimately identified, which supported enhanced phenol production relative to all three individual pathways by 16 to 69%. Further host engineering to increase endogenous precursor availability then allowed for 26% greater phenol production, reaching a final titer of 554 ± 19 mg/L and 28.8 ± 0.34 mg/g yield on glucose. Lastly, using a diphasic culture including dibutyl phthalate for in situ phenol extraction, final titers were further increased to a maximum of 812 ± 145 mg/L at a yield of 40.6 ± 7.2 mg/g. The demonstrated ‘funneling’ pathway holds similar promise in support of phenol production by other, non-E. coli hosts, while this general approach can be readily extended towards a diversity of other value-added bioproducts of interest.

Study of the Aging of Cold-Cured SKU-PFL Type Polyurethane Filled with Waste Products

The article describes the results of aging of samples of cold-cured molded polyurethanes of SKU-PFL brand filled with zeolite and silica gel - wastes of petrochemical production. The samples were aged under normal climatic conditions for 5 years. Filling of the samples varied from 10 to 50 %wt. Investigations of physical and mechanical properties of the samples before and after aging were carried out, the basic indicators of material quality were calculated using Microsoft Office Excel package. As a result of researches it was established that after aging the basic physical and mechanical properties of cast polyurethanes of SKU-PFL brand of cold curing filled with zeolite and silica gel change insignificantly, however the best resistance to aging are in samples with 20 %wt. zeolite and 10 %wt. silica gel filling both before and after aging that allowed to recommend them for long-term use of articles.

BIFUNCTIONAL ADDITIVE TO DIESEL FUELS

В статье показано, что разработка отечественных присадок на сегодняшний день является актуальной и стратегически важной задачей. На основе побочных продуктов нефтехимических производств ООО «Газпром нефтехим Салават» была разработана оптимальная рецептура депрессорной присадки, показавшая свою эффективность на дизельных топливах различного состава и происхождения. Максимальный депрессорный эффект составил 18 ºС. Влияние разработанной присадки на противоизносные свойства дизельного топлива оказало также положительный эффект со снижением скорректированного диаметра пятна износа до 24%. Физико-химические свойства дизельных топлив при введении в их состав 0,2% мас. разработанной присадки удовлетворяют требованиям ГОСТ 32511-2013. The article shows that the development of domestic additives is currently an urgent and strategically important task. The optimal formulation of the depressant additive was developed based on the by- products of the petrochemical production of Gazprom Neftekhim Salavat LLC. It has been shown effectiveness on diesel fuels of various composition and produsers. The maximum depressor effect was 18 °C. The effect of the developed additive on the anti-wear properties of diesel fuel also had a positive effect with a reduction in corrected wear scar diameter to 24%. The physico-chemical properties of diesel fuels with the introduction of 0.2% by weight of the developed additive meet the requirements of GOST 32511-2013. The significant important task - the rational use of by-products is solved with the developed additive.

Petrochemical Production Big Data and its Four Typical Application Paradigms

In recent years, the big data has attracted more and more attention. It can bring us more information and broader perspective to analyse and deal with problems than the conventional situation. However, so far, there is no widely acceptable and measurable definition for the term “big data”. For example, what significant features a data set needs to have can be called big data, and how large a data set is can be called big data, and so on. Although the "5V" description widely used in textbooks has been tried to solve the above problems in many big data literatures, "5V" still has significant shortcomings and limitations, and is not suitable for completely describing big data problems in practical fields such as industrial production. Therefore, this paper creatively puts forward the new concept of data cloud and the data cloud-based "3M" descriptive definition of big data, which refers to a wide range of data sources (Multisource), ultra-high dimensions (Multi-dimensional) and a long enough time span (Multi-spatiotemporal). Based on the 3M description of big data, this paper sets up four typical application paradigms for the production big data, analyses the typical application of four paradigms of big data, and lays the foundation for applications of big data from petrochemical industry.