scholarly journals Thermal Analysis of Recuperator Developed for Waste Heat Recycling in Liquid-Fuel Fired Furnaces

2021 ◽  
Vol 39 (1) ◽  
pp. 121-127
Author(s):  
Adekunle Taofeek Oyelami, ◽  
Samuel Babatope Adejuyigbe ◽  
Samuel Olugbenga Olusunle
Keyword(s):  
Thermal Analysis ◽  
Heat Flow ◽  
Liquid Fuel ◽  
Waste Heat ◽  
Melting Furnace ◽  
Environmental Friendliness ◽  
Waste Gas ◽  
Theoretical Pattern ◽  
Double Pipe ◽  
Gas Recycling

Three major parameters for efficient liquid-fuel-fired melting-furnaces include fuel-economy, thermal efficiency and environmental friendliness of operation. These key parameters form the basis for the adoption of recuperator in the waste gas recycling released during many melting operations in furnaces. This work analysed the thermal performance of both cold and hot fluids across the length of a double-pipe recuperator coupled to a ferrous-melting furnace. The thermal analysis carried out was anchored on some basic assumptions including taking the radiant and temperature characteristics of the exiting waste gases from the exhaust of the furnace as being constant over the volume of the furnace while the temperature at various positions on metal surface is equally taken as being constant. In addition, the heat flow transferred from the waste gases to the lining of the furnace is taken to be by convection and it is equal to the heat flow that the lining gives up to the adjourning surrounding. The derived equations were thereafter analysed and subsequently solved. The obtained results were thereafter used to graphically illustrate the variation of temperature of the agents of heat transfer over the entire length of the recuperator at different instances for parallel flow of the constituent working fluids. The analysis was observed to have conformed to a very great extent to the theoretical pattern expected for similar flows.

scholarly journals Films Based on a Blend of PVC with Copolymer of 3-Hydroxybutyrate with 3-Hydroxyhexanoate

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 270
Author(s):  
Evgeniy V. Belukhichev ◽  
Vera E. Sitnikova ◽  
Evgenia O. Samuylova ◽  
Mayya V. Uspenskaya ◽  
Daria M. Martynova
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Environmental Pollution ◽  
Polyvinyl Chloride ◽  
Polymer Films ◽  
Thermomechanical Analysis ◽  
Packaging Materials ◽  
Packaging Film ◽  
Scanning Calorimetry ◽  
Environmental Friendliness

Polymeric packaging materials are one of the factors of environmental pollution. Reducing the environmental burden is possible by increasing the environmental friendliness of packaging materials. In this work, we study polymer films based on polyvinyl chloride (PVC) with a copolymer of 3-hydroxybutyrate with 3-hydroxyhexanoate P (3-GB) (3-GG) with different component ratios. The process of processing blends in the process of obtaining a packaging film is considered. The optical characteristics of the obtained films are determined. Thermal analysis of the obtained films was carried out using the differential scanning calorimetry (DSC), TGA, and thermomechanical analysis (TMA) methods. The degree of gelling of the resulting mixture was determined. It is shown that PHB has miscibility with PVC.

scholarly journals Waste gas makes liquid fuel

Nature ◽  
2016 ◽  
Vol 531 (7594) ◽  
pp. 278-278
Keyword(s):  
Liquid Fuel ◽  
Waste Gas

Study on Recovery of High Temperature Waste Gas from Rotary Hearth Furnace

2011 ◽  
Vol 415-417 ◽  
pp. 472-477
Author(s):  
Jie Qin ◽  
Gong Guo Liu ◽  
Qiu Ting Wu ◽  
Xiao Le Zha
Keyword(s):  
High Temperature ◽  
Heat Recovery ◽  
Waste Heat ◽  
Social Benefits ◽  
Rotary Hearth Furnace ◽  
Hearth Furnace ◽  
Waste Gas ◽  
Operation Conditions ◽  
The Social ◽  
Titanium Magnetite

The situation of heat recovery of the waste gas with high temperature produced by rotary hearth furnace has been introduced at first, and further more, on the base of actual instance of the pilot which named as comprehensive utilization pilot of vanadium-titanium magnetite in Pangang. Several schemes about the heat recovery of high temperature waste gas have been proposed. The operation conditions of the scheme applied by the pilot also have been introduced. With the application of this scheme, it can make full recovery of the waste heat and 55% of energy can be recovered. Making full use of the heat of waste gas adapts to the social demand of energy conservation and emission reduction and gains better economic and social benefits.

The Comparison and Analysis of the System Utilizing the General Boiler Flue Gas Waste Heat

2014 ◽  
Vol 926-930 ◽  
pp. 829-832
Author(s):  
Yan Feng Liu ◽  
Peng Cheng Wang ◽  
Shao Shan Zhang
Keyword(s):  
Low Temperature ◽  
Flue Gas ◽  
Heat Recovery ◽  
Waste Heat Recovery ◽  
Waste Heat ◽  
Waste Heat Recovery System ◽  
Recovery System ◽  
Heat Recovery System ◽  
Comparison And Analysis ◽  
Gas Recycling

Flue gas recycling system is an effective way of saving energy and improving efficiency for coal-fired power plant. In this paper, the general low-temperature economizer, heat pipe type low temperature economizer, composite phase change heat recovery system are introduced. Combined with a 600MW unit parameters, the economies of various waste heat recovery system are compared.

422 Development of a Waste Heat Power Generation System Using a Stirling Engine in Aluminum Melting Furnace

2010 ◽  
Vol 2010.20 (0) ◽  
pp. 288-289
Author(s):  
Hiroshi SEKIYA ◽  
Mitsuru KERA ◽  
Eiichi SHINOYAMA ◽  
Sanyo TAKAHASHI ◽  
Hiroki SUNOU ◽  
...  
Keyword(s):  
Power Generation ◽  
Waste Heat ◽  
Melting Furnace ◽  
Stirling Engine ◽  
Heat Power ◽  
Generation System ◽  
Power Generation System

Use of waste-gas heat in waste-heat boilers

1974 ◽  
Vol 31 (8) ◽  
pp. 567-568
Author(s):  
V. M. Budov ◽  
Yu. V. Seskutov
Keyword(s):  
Waste Heat ◽  
Waste Gas

scholarly journals Biomethanation of Carbon Monoxide by Hyperthermophilic Artificial Archaeal Co-Cultures

Fermentation ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 276
Author(s):  
Aaron Zipperle ◽  
Barbara Reischl ◽  
Tilman Schmider ◽  
Michael Stadlbauer ◽  
Ivan Kushkevych ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Industrial Waste ◽  
Energy Production ◽  
Flue Gases ◽  
High Rate ◽  
Energy Sources ◽  
Waste Gas ◽  
Gas Conversion ◽  
Closed Batch ◽  
Gas Recycling

Climate neutral and sustainable energy sources will play a key role in future energy production. Biomethanation by gas to gas conversion of flue gases is one option with regard to renewable energy production. Here, we performed the conversion of synthetic carbon monoxide (CO)-containing flue gases to methane (CH4) by artificial hyperthermophilic archaeal co-cultures, consisting of Thermococcus onnurineus and Methanocaldococcus jannaschii, Methanocaldococcus vulcanius, or Methanocaldococcus villosus. Experiments using both chemically defined and complex media were performed in closed batch setups. Up to 10 mol% CH4 was produced by converting pure CO or synthetic CO-containing industrial waste gases at a high rate using a co-culture of T. onnurineus and M. villosus. These findings are a proof of principle and advance the fields of Archaea Biotechnology, artificial microbial ecosystem design and engineering, industrial waste-gas recycling, and biomethanation.

scholarly journals The Importance of TDA Thermal Analysis in an Automated Metallurgical Process

2021 ◽  
Vol 5 (4) ◽  
pp. 89-93
Author(s):  
Łukasz Petrus ◽  
Andrzej Bulanowski ◽  
Jakub Kołakowski ◽  
Jakub Sobieraj ◽  
Tomasz Paruch ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Chemical Properties ◽  
Melting Furnace ◽  
Casting Process ◽  
Development Project ◽  
Modern Technology ◽  
Innovative Technology ◽  
High Quality ◽  
Work Related

The article presents the results of research and work related to the implementation of the research and development project POIR.01.01.01-00-0120/17 co-financed by the EU, through the NCBR, entitled: Innovative technology using thermal analysis, TDA, of self-feeding manufacturing of high-quality cast iron to produce new generation, enhanced performance casts. In many foundries, thermal derivative analysis (TDA) is used in addition to chemical analysis to evaluate the physical and chemical properties of an alloy while it is still in the melting furnace or ladle and before it is poured into the mold. This fact makes it possible to improve the metallurgical quality of the alloy by introducing alloying additives, carburizers or modifiers into the furnace as part of the pre-modification or primary or secondary modification in the ladle or when pouring into molds. Foundry machinery (modifier dosing systems and spheroidizing station) is very important in these operations. Only the full synergy of modern equipment with modern technology ensures high quality and repeatability of the casting process. The article mainly discusses the obtained parameters of TDA analysis (with the use of the ITACA system) at different stages of melting and how to improve them by using modern and fully automated dosing systems (Itaca OptiDose, ItacaWire and ItacaStream). Special attention was paid to the minimum temperature of the eutectoid. The change of its value after the modification process, its influence on the quality of the melted metal, a very strong correlation with the number of nuclei and the number of graphite precipitations in the casts were shown.

Sign in / Sign up

Export Citation Format

Share Document