Carbon Footprint In Industry and Opportunities to Reduce It

This article represents an overview of carbon foot printing in Energy production and industrial production. Carbon footprint is an important tool for analyzing the global climate change. Now a days to deal with the global warming issues, carbon di-oxide (CO2) plays an important role. Besides the emission of greenhouse gases into the environment is also responsible for the carbon footprint. In some cases, analysis of carbon footprint indicated the measure of sustainability of a country. Hence, it is very important to control the carbon footprint with the help of efficient technology. Various studies are being conducted around the world to control the carbon footprint

Influence of pressure ratio on GTU and CCP efficiency

In this work ways of increase in efficiency of gas-turbine units (GTU) are analysed. Besides commercially mastered high reference temperatures of gases in front of the gas turbine (GT) – to 1500-1600 °C, also other factors influencing efficiency of GTU, in particular, pressure ratio are considered. The analysis of optimum values of pressure ratio and the analysis of influence of intermediate gases heating and intermediate air cooling are carried out. The experience of developments of GT with high pressure ratio is given.В работе проанализированы способы повышения эффективности газотурбинных установок (ГТУ). Помимо коммерчески освоенных высоких начальных температур газов перед газовой турбиной (ГТ) – до 1500-1600°С, рассмотрены и другие факторы, влияющие на эффективность ГТУ, в частности, степень повышения давления. Проведен анализ оптимальных значений степени повышения давления, влияние промежуточного подогрева газов и промежуточного охлаждения воздуха. Приведен опыт разработок ГТ с высокой степенью повышения давления

Design Optimization of a Helical Coil Gas Cooler Based on the Results of CFD Modeling of Erosion Wear

Simulation of erosion wear and design optimization have been performed for a convective gas cooler with a helical coil. Based on the results of simulation of the standard gas cooler design with a flat baffle used in Shell gasification-based combined cycle unit, it is concluded that the particle impact angle is the main factor determining the erosion maximum. To reduce erosion, it is necessary to install a structural element instead of the flat baffle to align the flow path of ash particles at the inlet to the gas cooler. The results of simulation for various baffle shapes show that a hemispherical baffle is optimal. The use of a hemispherical baffle plate made it possible to align the ash particle flow path at the inlet to the gas cooler channels and reduce the maximum level of erosion by a factor of almost 4 compared to the standard geometry of the baffle plate. © 2022 Institute of Physics Publishing. All rights reserved

A new approach to the development of zero-emission power generation system

The problems of tightening harmful emissions standards and meeting commitments to reduce greenhouse gas emissions require the development of environmentally and economically viable technologies to capture CO2 and its subsequent utilization. The integration characteristics of the generic technologies for CO2 emission utilization from energy industries with a short, medium- and long-term commercialization prospects are considered, depending on the level of technological maturity and market attractiveness. Potential CO2 consumers were classified according to the central most sensitive energy generation parameters: volumes, pressure, and purity, depending on the CO2 capture processes parameters and types of thermal power plants. The CO2 utilization unit principles designed for full CO2 capture by various industries under the Paris agreements are considered. The joint analysis of the operating and prospective power plants, leading industrial technologies based on CO2 consumption, has revealed three types of energy-industrial symbioses representing a cost-effective "Power Plant - CO2 Consumer"model. This model operates without CO2 capture and conditioning unit and has the efficiency close to the traditional power plant without emissions utilization. Critical technology solutions are being developed for one of these types. © Published under licence by IOP Publishing Ltd

Influence of the working fluid thermophysical parameters variation on the gas turbine cycle performance

The thermodynamic analysis of effect of the syngas combustion products (working fluid) thermophysical parameters variation on the economic and energy parameters of the gas turbine cycle is described. The thermodynamic analysis of Brayton cycle performance on various compositions of working fluid within a selected range of control parameters variation is presented. A gas turbine working fluid database was generated based on the analysis of flow diagram and operating regime of the production and design alternative gas-fired CCPP. The relationship between the cycle thermodynamic (pressure and temperature) and thermophysical parameters of the working fluid, which ensures gas turbine cycle maximum work, is derived analytically and supported by the well-known actual data. © Published under licence by IOP Publishing Ltd.The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006

Analysis of Methods of GTU Performance Increase

GTU cycles with intercooling and with regeneration are considered. The efficiency analysis of GTU of various cycles depending on ambient temperature, air compression ratio, intercooler effectiveness and the regenerator effectiveness is made. It is shown that under equal conditions the thermal efficiency of GTU with regeneration is higher than the thermal efficiency of the cycle with intercooling and simple cycle GTU.Рассмотрены циклы ГТУ с промежуточным охлаждением и регенерацией. Выполнен анализ эффективности ГТУ различных циклов в зависимости от температуры окружающего воздуха, степени повышения давления воздуха в компрессоре, КПД промежуточного охладителя и регенеративного теплообменника. Показано, что при равных условиях термический КПД цикла ГТУ с регенерацией выше термического КПД цикла с промежуточным охлаждением и простого цикла ГТУ

Use of carbon dioxide for supply of pulverized coal into the gasifier

The technologies of preparation and supply of fuel into the gasifier are considered in this work. As a result of the analysis of the systems of fuel preparation and supply into the reactor in the form of coal-water slurry (CWS), coal-CO2 slurry on the base of Phase Inversion-based Coal-CO2 Slurry technology (PHICCOS) and dry pulverized coal the data on efficiency of their application are obtained.В работе рассмотрены технологии подготовки и подачи топлива в газификатор. В результате анализа схем подготовки и подачи топлива в реактор в виде водоугольной суспензии (ВУС), суспензии уголь-СО2 по технологии Phase Inversion-based Сoal-CO2 Slurry (PHICCOS) и сухой пылеугольной смеси получены данные по эффективности их применения

EFFECT OF STEAM INJECTION INTO GAS TURBINE ON CYCLE EFFICIENCY

В работе рассмотрено влияние применения впрыска пара в газовую турбину на показатели газотурбинного цикла. Приведены тепловые потоки, определяющие энергетический баланс газотурбинной установки, основные факторы, влияющие на изменение параметров работы ГТУ.The influence of application of steam injection into the gas turbine on the gas turbine cycle performance are considered in the work. The main heat fluxes defining power balance of the gas turbine unit and main factors influencing the change of operating parameters are given

APPLICATION OF GAS TURBINE STEAM INJECTION TECHNOLOGY

В работе рассмотрены основные факторы, влияющие на изменение параметров работы газотурбинной установки и комбинированного цикла при применении впрыска пара. Приведены основные тепловые потоки, определяющие энергетический баланс камеры сгорания газовой турбины.The major factors influencing change of the operation parameters of gasturbine unit and combine cycle at application of steam injection are considered in the work. The main heat fluxes defining power balance of the combustion chamber of the gas turbine are given