Bulletin of the Saint Petersburg State Institute of Technology (Technical University)最新文献_第3页

HOMOGENEOUS-CATALYTIC ACETOXYLATION OF CAMPHENE 苯的均相催化乙酰氧基化反应

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-75-78

A. V. de Vekki, Y. Vigranenko, K. Alexandrov

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EFFECT OF DIBENZYLTRITHIOCARBONATE ON THE KINETICS OF 5-VINYLTETRAZOLE RADICAL POLYMERIZATION 二苄基三硫代碳酸酯对5-乙烯基四唑自由基聚合动力学的影响

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-52-57

D. M. Krygina, E. Sivtsov, A. Gostev

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MECHATRONIC TECHNOLOGICAL COMPLEX AS A DESIGN OBJECT 以机电一体化技术综合体为设计对象

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-104-112

A. N. Verigin, A. G. Ishutin, M. Korobchuk, A. Mazur

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HYDROGEN SULFIDE CORROSION INHIBITORS BASED ON OXYETHYL PIPERAZINE DERIVATIVES 氧乙基哌嗪衍生物硫化氢缓蚀剂

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-23-27

Maria E. Leont’yeva, Yuliya V. Demidova, P. A. Demidov, S. Dronov

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RESEARCH OF THE PROCESSES OF DECOMPOSITION AND COMBUSTION OF MIXTURES OF AMMONIUM NITRATE WITH ACTIVE COAL 硝酸铵与活性煤混合物分解燃烧过程的研究

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-28-31

B. Pavlov, E. P. Kovalenko, Alexander P. Susla, Victoria A. Dmitrieva

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IMPROVEMENT OF PERFOMANCE CHARACTERISTICS OF ELASTIC IGNITION CORDS BASED ON FLUOROELASTOMER SKF-26 基于氟弹性体skf-26的弹性点火线性能改进

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-65-91-32-36

Mikhail V. Ageev, Polina O. Bespalova, Valery N. Egorov, Boris D. Pavlov, Aleksey D. Shubin

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OPTIMIZATION OF THE INGREDIENT CONCENTRATION OF A POLYMERIC COMPOSITION UNDER THE CONDITIONS OF FUZZY-SPECIFIED INTERACTION OF ACTIVE ADDITIVES 活性添加剂相互作用模糊条件下聚合物组合物组分浓度的优化

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-113-119

Egor F. Feoktistov, I. Germashev

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INVESTIGATION OF WAYS TO REDUCE EMISSIONS OF NITROGEN OXIDES DURING FUEL COMBUSTION IN TUBULAR FURNACES 减少管式炉燃料燃烧过程中氮氧化物排放的方法研究

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2023-01-01 DOI: 10.36807/1998-9849-2023-64-90-96-103

{"title":"INVESTIGATION OF WAYS TO REDUCE EMISSIONS OF NITROGEN OXIDES DURING FUEL COMBUSTION IN TUBULAR FURNACES","authors":"","doi":"10.36807/1998-9849-2023-64-90-96-103","DOIUrl":"https://doi.org/10.36807/1998-9849-2023-64-90-96-103","url":null,"abstract":"A mathematical model of fuel combustion in tubular furnaces was developed. The model allows to calculate the concentration of nitrogen oxides in the exhaust gases for different configurations of the furnace and burners, different volume flow rates and methods of air supply to the furnace. In order to confirm the adequacy of the developed mathematical model, a numerical experiment was conducted for the existing basic furnace design with fuel combustion technology according to the current regulations. A slight (2.3%) discrepancy between the calculated and experimental values of the concentration of nitrogen oxides at the outlet of the operating furnace indicates the adequacy of the developed mathematical model. Subsequent numerical experiments to study various fuel combustion schemes for the purpose of decreasing NOx emission showed that the use of two-stage combustion in burners located in the same plane is ineffective. The use of this method allows to reduce the NOx yield by no more than 10%. The method of two-stage combustion by the height of the combustion chamber is more effective. The supply of a mixture of gases with an excess air coefficient of 0.8 to the burners and the supply of the remaining air higher along the cross section of the furnace allow reducing the total output of nitrogen oxides by 2,5 times.","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75306172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AMMONIA DENSITY AT THE TEMPERATURE OF PHASE TRANSITION FROM SOLID TO LIQUID STATE AS A FUNCTION OF COMPOSITION AND STRUCTURE IN MODELS OF PARTICLES WITH SPHERICAL IMAGES OF HYDROGEN AND NITROGEN ATOMS 在氢和氮原子球形图像的粒子模型中，从固态到液态相变温度下的氨密度与组成和结构的关系

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2022-01-01 DOI: 10.36807/1998-9849-2022-62-88-50-57

S. Loginov

引用次数: 0

ON THE RELIABILITY OF THE ASSESSMENT OF THE THERMAL MODE OF AN UNDERGROUND SPENT NUCLEAR FUEL STORAGE FACILITY BASED ON NUMERICAL MODELING 基于数值模拟的地下乏燃料储存设施热模态评估可靠性研究

Bulletin of the Saint Petersburg State Institute of Technology (Technical University) Pub Date : 2022-01-01 DOI: 10.36807/1998-9849-2022-62-88-84-90

P. V. Amosov

{"title":"ON THE RELIABILITY OF THE ASSESSMENT OF THE THERMAL MODE OF AN UNDERGROUND SPENT NUCLEAR FUEL STORAGE FACILITY BASED ON NUMERICAL MODELING","authors":"P. V. Amosov","doi":"10.36807/1998-9849-2022-62-88-84-90","DOIUrl":"https://doi.org/10.36807/1998-9849-2022-62-88-84-90","url":null,"abstract":"The results of checking the reliability of a previously performed assessment of the thermal mode of an underground facility for long-term storage of spent nuclear fuel in a variant of an integrated reinforced concrete structure on three calculation grids (Coarse, Normal, Fine) are presented. The test was performed on a previously developed three-dimensional computer model in the COMSOL program. The mathematical basis of the model is following: continuity equation, Navier-Stokes equations averaged by Reynolds, standard turbulence model and general heat transfer equation. The consideration of mixed convection conditions was implemented in the \"incompressible ideal gas\" approximation. It was shown that when using computational grids with high resolution (Normal, Fine), some characteristics may be predicted. They are: temperature increase inside the built-in structure and at the boundary \"rock mass - built-in structure\" no more than 1°C; a significant change in the structure of the spatial distribution of temperature and an increase in maximum temperatures by about 1°C on the surface of the built-in structure. The duration of calculations in variants with small grids increased approximately 3.4 (Normal) and 7.7 (Fine) times, respectively","PeriodicalId":9467,"journal":{"name":"Bulletin of the Saint Petersburg State Institute of Technology (Technical University)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78283546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0