The gross calorific value of wet bagasse depends mainly on the water content of the bagasse. Advanced power generation systems have a big potential to be integrated into sugar cane factories and thus help generate surplus electricity. Manufacturing capability exists in the country for the equipmentmachinery required for setting up cogeneration projects. Shafi sabir, khuram ejazdepartment of farm machinery and power, university of agriculture, faisalabadpakistanabstract moreover, to meet world trade organization wto. The amount of bagasse used for ethanol production is assumed to be 375,000 t, and the productivity of this route is estimated at approximately 20 l of ethanol per tonne of cane. A typical application for biomass power generation is utilization of the bagasse in sugar factory. This paper aims to study performances of dry and wet bagasse combustion to generate 51. Ethiopia bagasse energy survey english the world bank.
The indirect method is also known as a heat loss method. In the analysis, exergy methods with more conventional energy analysis are employed to assess the thermodynamic efficiencies and losses. Bagasse is the fibrous matter that remains after sugarcane or sorghum stalks are crushed to extract their juice and is a by product generated in the process of manufacture of sugar. Boilers efficiencies and evaporation coefficients has been calculated for each type of bagasse. For improvement the power plant efficiency the effect condenser pressure has been studied. Bagasse a sustainable energy resource from sugar millsedit. Recen tly a program of work on bagasse utilization was initiated at as two field and laboratory studies have resulted in theses on bagasse quality by aquirre 3 and bagasse boiler operation by kwok 4. Bagasse fired boiler biomass power plant boiler plants. Performance evaluation of boiler in 46mw bagasse based cogeneration power plant nishant singh assistant professor, department of mechanical engineering. Introduction of cogeneration system using bagasse in a. Realization of the first successful bagassepowered cogeneration. The power plant stores bagasse from the milling process for utilization in power processes appropriate for 8 months and for the. Most bagasse has a moisture content between 45 and 55 percent by weight. Cogeneration projects with higher boiler pressure results in low computation of bagasse, resulting in increased operating days.
The purpose of the project activity is to utilize the waste bagasse of balrampur chini mills. It is used as a biofuel for the production of heat, energy, and electricity, and in the manufacture of pulp and building materials. Pdf study of a cogeneration plant in sugar mill by using bagasse. The cogeneration principle has been used in cuba since the very beginning of the 20th century. The use of coal in firm power plants would be minimal due to more efficient burning of bagasse. The promotion of bagasse cogeneration in sugar mills for surplus power generation is one of the important schemes of meda. Decrease of bagasse moisture enhance boiler efficiency due to the increasing of the calorific value. Gasse is the dry pulpy fibrous residue that remains after sugarcane or sorghum stalks are crushed to extract their juice. Additionally, the bedp favoured larger capacity boilers for bagasse based power plants because of the greater processing and thus cost efficiencies obtained.
Most biopower plants use directfired systems which burn biomass directly to produce steam. Usu ally, sugar mills having mechanical steam turbines have higher steam consumption due to the poor efficiency of the mechanical steam turbines. The operating parameters considered are the pressure of steam at boiler outlet p. Bagasse from sugar production is used in biomass power plants experimental efficiency analysis of sugarcane bagasse boilers dec 19, 2017 this work presents an experimental efficiency analysis of sugar cane bagasse boilers performed according to the first law of thermodynamics. Energy performance comparisons and enhancements in the sugar. The proven coal reserves in zimbabwe are 502 million tonnes, which can last 101 years. Considers a sugarcane ethanol plant in brazil, based on generic data. There are nearly 202 sugar factories registered in maharashtra. Bagassebased cogeneration in pakistan bioenergy consult. Modeling and optimization of process parameters of bagasse.
Industrial steam turbines with a power output of up to 250 mw and live steam parameters of up to 565 c 165 bar achieve maximum efficiency with a double casing reheat solution. The group has 6 power plants, 3 in up and 3 in bihar with combined capacity to produce 112 mw of power. Properties and operating experience with bagasse as a boiler fuel. Deac3608go28308 national renewable energy laboratory 150 denver west parkway golden, co 80401 3032753000.
The purpose of this paper is to ex amine and interpret some of these recent data, particularly that due to kwok, to establish some. The bagasse cogeneration technology that is widely in use in the south african sugar industry is direct combustion. In conventional power plant, efficiency is only one third and remaining two third of energy is lost. Exgtg boundary for thermal power plant 151 figure 9. The proposed bagasse energy incentives were aimed at improving energy efficiency in factory processes to enable a higher amounts of electricity to be sold to the national grid, incentivising bagasse storage, and creating independent power companies that separated the cogeneration power plant from the sugar mill, allowing it greater operational. The composition of bagasse depends on the variety and maturity of sugarcane as well as harvesting methods applied and efficiency of the sugar processing. Bagasse maharashtra energy development agency govt. Index terms biopower and biofuel, cogeneration in the sugar industry, energy efficiency and management, government policy.
Sugar cane industry overview and energy efficiency considerations. According to the available data, bagasse gasification system is said to be at least 50% more efficient than the current direct combustion system. Table 4 heat to power ratios and efficiencies of cogeneration units27. India maharashtra bagasse energy efficiency project english abstract. Detailed design of bagasse cum coal cogeneration power. Figure 5 the percentage distribution of biomass on sugar cane plant 6. One of the oldest energy efficiency ideascombined heat and power is prospering in the u. Sep 27, 2008 india is the largest producer of sugar in the world. The capacity of existing bagasse power generation equipment is 10 mw that has been operating since 1997. Pdf boiler oct 4, 2012 crushing about 18 million tons cane per year from 5 sugar mills. The boiler is the major source of irreversibilities.
Key words ideal rankine cycle, energy analysis, exergy analyses. A sugar mill near meerut, north india utilises the waste bagasse from the sugar. Jan 25, 2011 once at the power plant, the necessary volume of bagasse is fed to the boilers and the excess is conveyed to the fuel yard, cepero says. From bagasse fuel zaheer ul hassan bagasse bagasseis the fibrous matter that hemiremains aftersugarcanestalks are cellulose cellulose crushedtoextracttheirjuice. The hcm project activity is a bagasse based cogeneration project at bcml plant haidergarh chini mills hcm. Very few bagasse based cogeneration power plants are designed with. Bagasse fluidized bed and fixed bed gasification plants would respectively lead to save 59,250 and 21,750 tons of co 2 annually, compared to gas power plants of the same scale. The net electric efficiency of the plant, based on lcv, under bagasse firing will be 28. Excoalligniteoilgas based thermal power plant energy balance diagram 152 figure 10. Exgtg boundary boundary for sponge iron subsector 156 figure. A typical traditional sugar mill can produce 250280 kg bagasse per tonne, which. The ncv dry bagasse in assalaya sugar factory resulted as ncv18071.
The bagasse fluidized bed gasification option with irr of 28. The tower was equipped, with deflectors to advertisement better gassolid contact. Cofiring refers to mixing biomass with fossil fuels in conventional power plants. Cdm financing can help improve the rate of return of the project.
These fibers could easily be used in the composite manufacture. Electricity from bagasse in zimbabwe sciencedirect. The compilation of the existing scenario is based on the survey and research study. Energy efficiency improvement measures in sugar mills have been and. The project activity is connected to the tneb grid to which it exports surplus electricity project activity may include the installation of a new biomass power generation plant at a site where currently no power generation occurs not. However, derated capacity is approximately 31 gw during the year. Bagasse storage new power house national grid outline.
Performance of wet and dry bagasse combustion in assalaya. Pakistan had a total installed power generation capacity of over 34 gw by december 2018. Energy management in the south african sugar industry. Between 1910 and 1970, only very few bagasse drying works reported is describe that increase the efficiency of all drying industries. Pdf environmentaleconomic evaluation of sugar cane. Lignin ash 1824% 14% as a fuel bagasse is an excellent raw material for power generation. Power development plan 20152036 pdp2015 formulated in line with the energy efficiency development plan eedp and the alternative energy development plan aedp was approved by the national energy policy council nepc on december 17, 2014 as the. A thermal efficiency or efficiency of the boiler by indirect method th. Technological description of the plant at hve the power plant has generating stations driven by steam. Bagasse is usually combusted in furnaces to produce steam for power generation. India is the largest producer of sugar in the world. The efficiency of a cogeneration plant is higher than those achieved when heat and. Bagasse lhv kj kg bagasse 1 7500 bagasse ash content %2 3. Capacity refers to the maximum output that a given generator of electricity is able to produce.
Abstract in this article, energy and exergy analysis of an ongoing, 44mw, heatmatched, bagasse based cogeneration plant of ugar sugar works ltd uswl, located in belgaum, india is presented. Bagasse and blended biomass cogeneration advances in the. Most of the capacity figures in this report are given in mw. And the sugar industry is a highly energy intensive sector. Biopower system technologies include directfiring, cofiring, gasification, pyrolysis, and anaerobic digestion. For encouraging sugar factories in developing the cogeneration power project an attractive policy has been declared by gom vide g. The gasification system utilizes a bagasse gasifier instead of a conventional direct combustion boiler. Bagasse is also emerging as an attractive feedstock for bioethanol production. Coal is being used during the intercrop season as cane biomass is available. Afforestation programs are urgently needed, but will not be able to redress the imbalance between supply and demand. Composition and properties of bagasse fibres table1 shows the classification of the selected plant fibers.
Almost all the sugar mills in pakistan have inhouse plants for cogeneration but they are inefficient in the consumption of bagasse. The use of this fuel as an electric power generation source is increasing due to innumerous advantages. Introduction of cogeneration system using bagasse in a sugar. Performance evaluation of boiler in 46mw bagasse based. In bagasse based cogeneration plant bagasse utilized every day ranges from 100 to 2000 tons, ash created is 10 to 80 tons and power of 20000 to 800000units are produced.
Bagasse from sugar production is used in biomass power plants experimental efficiency analysis of sugarcane bagasse boilers. During the operation period of the plant november to april, the power demand of the plant of about 6 mw is covered mainly by the bagasse power generation equipment and the auxiliary by a diesel power generator. Bagasse based cogeneration project at titawi sugar complex. Formalizing mathematical model of bagasse based cogeneration power plant.
The payback period for the power plants is unknown which makes the investors reluctant to invest in the high cogeneration project. Figure 5 the percentage distribution of biomass on sugar cane plant 6 sugar cane is a very efficient energy crop that converts 2 % of available solar energy into chemical energy. In terms of its energetic content, the bagasse represents 49. Because the new hope power plant operates at a high level of thermal efficiency, a significant volume of bagasse is stored at the end of the sugarcane grinding season, typically from midoctober to mid. Pdf bagasse cogeneration describes the use of fibrous sugarcane waste, bagasse to cogenerate heat and electricity at high efficiency in. The okeelanta cogeneration plant burns bagasse for about 6 months of the year, and burns urban and other wood wastes at other times. Pdf bagasse based cogeneraion at hipo valley estates in zimbabwe pdf the paper reports on the assessment of the use of bagasse for cogeneration purposes at hippo valley estates hve, a sugar manufacturing company in zimbabwe.
The consumption of bagasse depends upon the pressure at which steam is produced in boiler. Bagasse based high pressure cogeneration in pakistan. India maharashtra bagasse energy efficiency project. Thus, part of the bagasse will be exploited by the selfsupply power plant.
High efficiencies allow for economical operation of the power plant and competitive power generation compared to electricity production from conventional energy sources. Coal, which is plentiful at the two local collieries, can be used to supplement bagasse in the firm power plants. Bagasse based cogeneration power project overview bagasse is a by product of sugar cane that is used as fuel in boilers to produce process steam. Bagasse is often used as a primary fuel source for sugar mills.
Properties and operating experience with bagasse as a. The amount of electricity generated from bagasse could be greatly increased if sugar mills and associated power plants were modernised into more efficient operations, and if more effort was made to gather all of the cane trash which could be used in electricity generation currently only 50% of the cane biomass available for use is collected clean energy council, pdf 73 kb. Feasibility study of economics and performance of biomass power generation at the former farmland industries site in. Apr 17, 2020 considering the fact that pakistan is among the worlds top10 sugarcane producers, the potential of generating electricity from bagasse is huge. The remaining fibrous is called bagasse, and is used as fuel for power boilers. Once at the power plant, the necessary volume of bagasse is fed to the boilers and the excess is conveyed to the fuel yard, cepero says. The key energy problem facing the overwhelming majority of ethiopias population is the increasing scarcity and cost of traditional fuels. The project is essentially an investment program to upgrade sugar mills in maharashtra whereby each participating mill will be retrofitted to enable the production of electricity and bagasse over and above internal mill requirements.
The steam is produced by both bagasse and coal fired boilers. Future energy transitions for bagasse cogeneration. It is used as a biofuel for the production of heat, energy, and electricity, and in the manufacture of pulp and building materials agave bagasse is a similar material that consists of the tissue of the blue agave after extraction of the. Power plant the power plant is of cogeneration type with 2 watertube boilers each of capacity 300 tonhour and 2 steam turbines each of capacity 15 mw. In addition, the calculated thermal efficiency was 38.
Bagasse power plants generate carbon emission reductions in 2 ways. Biomass power plant solutions siemens global website. Sugar cane industry overview and energy efficiency. Bagasse cogeneration is also the basis of power generation efficiency in cubas sugar industry. Improvement power plant efficiency with condenser pressure. Power cogeneration in sugar mills sugar cane sugar mill sugar juice 73%.
Using bagasse in power cogeneration sugarcane cogeneration. Feasibility study of economics and performance of biomass. Observations by cogen india residential in plant training programs on sugar mill cogeneration. Company overview phu khieobioenergy complex overview bioenergy companies particle ethanol power plant sugar mill plant 345,000,000 kwhy board 3,000,000 200,000 ld 2,400,000 tons dan chang phu khieo 54,000 tby tcy steamy investment 60 million usd 60 million usd first sync to the grid july 2004 september 2004. The sugar cane is crushed first and squeezed in a mill to extract the sugar content. Efficiency calculations of bagasse fired boiler on the. Among the nres, bagasse based cogeneration of surplus power in indian sugar mills has been given a new boost, as more than 3500 mw of surplus power potential exist in sugar mills only 10,700 mw. The profit of the plant increases, which will ensure the. Energy from sugar cane bagasse on a commercially sustainable. In general, bagasse has a heating value between 3,000 and 4,000 british thermal units per pound btulb on a wet, asfired basis. Cogeneration plant based on 105 bar and 520c adopted in the state of tamil nadu and andhra pradesh generate about 6% more power than 87 bar and 515c 9. A detailed process of determining thermal efficiency or boiler efficiency through indirect method is provided below 9. It was felt that a rapid increase in fossil fuel import could be prevented by a more efficient exploitation of bagasse energy for electricity generation. Bagassebased cogeneration at hippo valley estates sugar.
183 219 704 7 166 243 1309 892 1451 239 188 127 185 422 375 1040 405 338 725 1157 1158 54 940 948 305 1247 929 752 658