Research on possible sulfuric acid (H2SO4) production using sulfur/sulfur-containing feedstocks from Dung Quat refinery

2021 ◽  
Vol 11 ◽  
pp. 66-76
Author(s):  
Thi Thuong Vo ◽  
Vinh Loc Tran ◽  
Duong Hai Le ◽  
Minh Hieu Nguyen ◽  
Van Nhan Truong ◽  
...  

This paper analyses the possibility for H2SO4 production using sulfur/sulfur-containing feedstocks from Dung Quat Refinery in terms of market, technology and economic efficiency. Domestic production of H2SO4 currently does not meet the domestic demand, the shortfall must therefore be compensated by imports. It is forecast that the domestic market will lack about 464 thousand tons of H2SO4 by 2025. The H2SO4 production project with a capacity of 200 thousand tons per year is proposed to go into operation in 2025. In the case of indirect production of H2SO4 from H2S rich gas through the intermediate sulfur product, the project has an estimated total investment cost of USD 143.2 million, its IRR will be around 3.2%, its [email protected]% will be USD 55.1 million and the total payback period will be 14 years and 4 months. In case of using H2S rich gas directly as feedstock, the project has an estimated total investment cost of USD 102.4 million, its IRR will be around 16.3%, its [email protected]% will be USD 15.7 million and the total payback period will be 5 years and 5 months.

2019 ◽  
Vol 290 ◽  
pp. 02006
Author(s):  
Anca Mocan ◽  
Anca Draghici

Lack of appropriate warehouse ergonomics is one of the leading causes of worker injuries in industry environments. As management teams are trying to reduce the cost of doing business, they look to worker’s health statistics and realize they must improve their way of operating. The paper presents a warehouse analysis done at the request of the management team of a Belgian manufacturing plant. The factory’s warehouse was audited with focus on Kanban bin weight, storage rack height and rack width to assess the ergonomic strain it causes on workers. The paper then presents possible automation options in order to find the best fit to reduce ergonomic impact, while also optimizing the total investment cost.


Author(s):  
V.G. Russkiy ◽  

The article discusses the issues of designing the creation of a modular cheese dairy in an agricultural enterprise in the region. The optimal scheme for financing the project is presented. The costs of production are justified. The proceeds from sales and profit are determined. The payback period of the cheese dairy is calculated.


2015 ◽  
Vol 747 ◽  
pp. 337-340
Author(s):  
Sari Dewi

Palu has onshore wind potential 3.6 m/s in average and offshore 5.3 m/s in average. Based on the weather condition which has temperature between 27.3 degree Celcius - 37 degree Celcius, Palu has solar potential with an average insolation value 6.6. Shortage that is quite often happen in Palu (Indonesia) can be solved by installing 19.5 MW PV and 9.9 MW wind that can produce electricity of 234.1 MWh per day with total investment cost of US $129,005,860. By replacing some diesel generators with PV and wind and combined with 104.5 MW existing capacity, the total fuel can be saved is 16,599 gal per day and the total reduced CO2 production is 167 kg per day.


2012 ◽  
Vol 549 ◽  
pp. 225-228
Author(s):  
Yong Sheng E ◽  
Xiao Dan Sun

This paper introduces the current technology of separating and refining β-methylnaphthalene from wash oil. On this basis, I propose a new production method of β-methylnaphthalene after many experiments. Industrial methylnaphthalene is washed twice with sulfuric acid and is distilled once. The content of β-methylnaphthalene is higher than 96%.The yield is 60%, which is higher than current domestic production levels.


2011 ◽  
Vol 17 (2) ◽  
pp. 284-295 ◽  
Author(s):  
Milena Medineckienė ◽  
Folke Björk

The article describes typical apartment buildings built in Swedish residential areas in the ‘50s, ‘60s and 70's. Each of these buildings included calculations on the effects and investment cost of a number of renovation measures aimed at improving energy efficiency. By applying multi-criteria decision making methods Simple Additive Weighting (SAW), Multiplicative Exponential Weighting (MEW) and Complex Proportion Assessment (COPRAS), the preferences of building owners regarding renovation measures were studied. The study highlighted four important criteria, including the use of energy from district heating and electricity, investment cost and payback period. The owner preferences were found to have a major impact on the outcome of the study. These owners gave sufficient weight to renovation measures within a short payback period. Renovation actions falling out to be quite attractive are additional thermal insulation in the attic and heat recovery from exhaust air. Santrauka Straipsnyje išnagrinėti trys tipiniai švedų daugiabučiai, pastatyti 6-ajame, 7-ajame ir 8-ajame dešimtmečiais. Buvo atlikti kiekvieno šių pastatų atnaujinimo priemonių skaičiavimai, įvertinantys efektyvumą ir investavimo apimtis, kuriomis siekiama didinti energijos vartojimo efektyvumą. Taikant daugiakriterinius sprendimo priemimo metodus, tokius kaip Simple Additive Weighting (SAW), Multiplicative Exponential Weighting (MEW) and COmplex PRoportion Assessment (COPRAS), buvo tiriami savininkų teikiami prioritetai pastatų atnaujinimo priemonėms. Tyrimas buvo atliekamas vertinant keturis pastatų kriterijus: energija, vartojama centralizuotam šildymui, ir elektros energija, investicijų sąnaudos ir atsipirkimo laikotarpis. Atlikus skaičiavimus buvo nustatyta, kad didelę įtaką tyrimo rezultatams daro savininku nuomonė. Šie savininkai daugiausia demesio skyrė trumpam renovacijos priemonių atsipirkimo laikotarpiui. Viena patrauklesnių renovacijos priemonių yra papildoma šilumos izoliacija palėpėje ir šilumos gavimas iš ištraukiamo oro.


Author(s):  
T. Babynets ◽  
◽  
Y. Tyutyunnik

The purpose of the work - to conduct a study of economic efficiency developed in L. Pogorilyy UkrNDIPVT design solutions for family dairy and fattening farms of cattle and sheep farms of different sizes, adapted to EU requirements. Research methods. During the analytical research, an economic evaluation of the effectiveness of the developed design solutions of dairy and fattening farms of cattle, as well as sheep farms of different sizes was made. Investments in the creation of livestock facilities were determined by the following components: construction of farms, acquisition of machinery and technological equipment, the cost of purchasing livestock. The estimate for the construction and technical equipment of the farms included the costs of construction materials, machinery, equipment, construction and installation work. The calculated method was determined by the cost of funds per animal place and the output of gross output, taking into account the planned productivity. The need for land for the operation of farms was calculated according to the needs of animals in feed for the production of planned livestock products. Calculations of profitability of production and payback period for the creation of livestock facilities were carried out according to generally accepted methods of determining economic efficiency. Research results. According to the results of research on the economic efficiency of projects of livestock facilities, developed in L. Pogorilyy UkrNDIPVT and adapted to EU requirements, the following expected indicators were obtained. To create dairy farms for 10, 15 and 25 cows with young livestock, respectively: the need for total investments is 1535.89 thousand UAH, 2038.78 and 2964.20 thousand UAH; expenditures per animal - UAH 76 thousand, UAH 68 thousand and UAH 59 thousand; the need for land for the operation of farms - 16 hectares, 24 and 40 hectares; the level of profitability of farms, provided that the planned productivity is reached, will be 60, 64 and 61%; payback period -5.2; 4.4 and 4.0 years, respectively. In order to create family farms for fattening young cattle, respectively, by 25, 50, 100 heads: the need for total investment is 489.3 thousand UAH, 764.1 and 1253.0 thousand UAH; expenditures per animal - UAH 19.5 thousand, UAH 15.3 and 19.5 thousand; the need for land for the operation of farms - 10, 20 and 40 hectares; level of profitability - 40%; the payback period for the creation of such farms is 5, 4.5 and 4 years, respectively. To create family sheep farms for 25, 50, 100 heads of fattening and 100 heads of dairy sheep farms, respectively: the need for total investments is UAH 252.20 thousand, UAH 357.81 thousand, UAH 568.39 and 76.47 thousand; expenditures per animal - UAH 10.20 thousand, UAH 7.10 thousand, UAH 5.60 and 10.20 thousand; the need for land for the operation of farms - 3.1, 6.2, 12.3 and 13.8 hectares; level of profitability - 25%; payback period for the creation of farms - 5, 4,5, 4 and 4 years. Conclusions. Studies of the economic efficiency of livestock projects developed in L. Pogorily UkrNDIPVT and adapted to EU requirements, namely different sizes of family dairy and fattening farms of cattle and sheep farms testified to the high economic feasibility of their creation and use. Key words: sheep breeding, economic efficiency, capital investments, estimate, level of profitability, cattle breeding, livestock farms, payback period.


Author(s):  
Sergey Sergeevich Marchenko ◽  
Alexander Nikolaevich Lazarev

The article deals with the problem of the economic feasibility of continuing the operation of obsolete vessels, their modernization and acquisition of new modern vessels. There have been analyzed the economic issues of modernization of obsolete vessels, content of work on the modernization of vessels, as well as fundamental differences between the modernization of existing vessels and their replacement with new ones. Static principles of determining the economic efficiency of the vessels modernization are formed, which allows a preliminary assessment of the economic feasibility of work on the modernization of vessels. Methodological guidelines for determining the economically viable payback period of a modernized vessel have been developed. It is recommended to evaluate the economic feasibility of modernizing an outdated vessel compared to replacing it with a new competitive vessel by comparing operating costs for an existing vessel after upgrading it with operating costs for a new vessel, as well as comparing capital investments in upgrading and purchasing a new vessel. Inequality is constructed, expressing the economic feasibility of the early replacement of obsolete vessels with new modern ones compared to the modernization. The dynamic principles of the economic evaluation of the modernization of vessels are formed, taking into account the change in the value of money over time during the investment stages of the project on the modernization of the vessel and the subsequent periods of operation of the upgraded vessel. Calculations were made of the economic efficiency of the modernization of the Volzhsky vessel of the project 05074, the purpose of which was to upgrade the power plant and reduce operating costs. The positive results of the modernization of vessels of the river fleet are considered. The negative aspects of the modernization of vessels that should be taken into account when choosing the direction of updating the fleet of the Russian shipping companies are identified.


2021 ◽  
Vol 9 (3) ◽  
pp. 337-367
Author(s):  
Englebert Stockhammer ◽  
Joel Rabinovich ◽  
Niall Reddy

Most empirical macroeconomic research is limited to the period since World War II. This paper analyses the effects of changes in income distribution and in private wealth on consumption and investment covering a period from as early as 1855 through to 2010 for the UK, France, Germany and the USA, based on the data set of Piketty and Zucman (2014). We contribute to the study of wealth effects, of financialization, and of the nature of demand regimes. We find that overall domestic demand has been wage-led in the USA, the UK and Germany. Total investment responds positively to higher wage shares, which is driven by residential investment. For corporate investment alone, we find a negative relation. Wealth effects are found to be positive and significant for consumption in the USA and the UK, but weaker in France and Germany. Investment is negatively affected by private wealth in the USA and the UK, but positively in France and Germany.


2021 ◽  
Vol 112 ◽  
pp. 00025
Author(s):  
Sergey Nikonorov ◽  
Alexander Krivichev ◽  
Vladimir Sidorenko

The authors attempt to assess the environmental and economic efficiency of investment projects for the goods transportation by the northern seas of Russia taking into account the relevance of the topic of cargo transportation by means of the “Northern Sea Route” (NSR) and new concept of the digital format of the “Northern Sea Transit Corridor” (NSTC) implemented by the “Rosatom” State Corporation. The structure of import-export and transit traffic by the NSR in 2020 is considered. The goal of the article is to evaluate the efficiency of investment project for the goods transportation forwards and backwards by the NSR from Murmansk city to PetropavlovskKamchatsky city using the example of the “Andrey Osipov” shipping facility. Some indicators were assessed: planned revenue, payback period; NPV, environmental damage. The following results are obtained: the payback period is 10 years; by using the naval fuel oil over a ten-year period, 1101.6 tons of SOx, 143.1 tons of CO2, 288.9 tons of NOx will be emitted. In addition, the authors propose an innovative approach to creation of ships from new materials and technologies based on the modern paradigm of “Accelerated Digital Certification”.


2018 ◽  
pp. 242-246
Author(s):  
Maite Conde

Adalberto Kemeny and Rodolfo Lustig’s dependency on São Paulo’s industrial and political elite to produce São Paulo, Symphony of a Metropolis was not exceptional. By the late 1920s American films occupied 80 percent of the Brazilian market, leaving little space for local production. Without full access to the domestic market, producers could not achieve adequate returns on their investments, and consequently the process of capital accumulation within the industry was stifled, as was production. Even the temporary disruption of the coming of sound did not end Hollywood’s ubiquity in Brazil. In fact, the arrival of the talkies further entrenched US cinema’s presence. The high costs of acquiring synchronized equipment meant that local investment lagged behind Hollywood and allowed the North American industry to maintain its hegemony. By the early 1930s, North American dubbing and subtitling techniques had proved popular among Brazilian audiences, and Hollywood increased its presence in the country. In the face of North America’s dominance, domestic production was unstable and unprofitable, and local producers were mostly unable to attain a sufficient return on their investments to allow them to develop on a larger scale. ...


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