Product development
Enter specialists
Published
6 years agoon
By
adminWith companies giving way to specialists in their lubrication management, we can only hope that plants may not encounter as many downtimes in the years to come.
Lubricants enhance the performance of equipment in cement plants by giving them longer life and improved efficiency. They can be classified: solid, liquid, semi-liquid, and gaseous. Lubricants are widely used in numerous end-use industries. Leading companies are seeking advantages like energy efficiency and cost saving by using lubricants at various stages of production activity to withstand growing competitive pressures.
Special needs of cement lubricants include sustaining high level of heat and dust. Lubricants are used for various applications in cement industry, including in heavy duty equipment, drilling equipment in quarries; in gear boxes, belts, grinding roller bearings in crushers and conveyors; in girth gear/ open gear, bearings/ kilns and cooling unit in mills and kilns; and in general equipment like industrial gears, fans, air compressors etc.
Lubricating oils, in general, are being utilised across various industrial applications as well in areas such as air compressors, auxiliary equipment, bearings, gas engines, hydraulics, heat transfer systems, paper machines, turbines, metalworking, and natural gas compressors. The demand for industrial lubricants is on the rise and is believed to grow even further. In India, the current share of industrial lubricants is about 38-40 per cent of the total lubricants market.
The sector is majorly confined by extremely large multinationals or small and niche manufacturers. Several companies are altering their business lines with respect to base oil supply chain, manufacturing process, and consolidations.
Challenges
Stating that industry must appreciate "Oil in Machine is like Blood in Human Body", KB Mathur, founder of Global Technical Services, a consulting firm and service provider, says, the practice of use of contaminated lubricants and lack of focus on the use of lubrication in the industry were the biggest concerns in India.
"Oil companies invest large amounts of money and efforts on research and development activity in developing and producing high performance lubricants, and all such efforts and expenditure will be wasted and the industrial consumers shall also incur heavy losses, if such lubricants are allowed to get contaminated before fed to machines," Mathur adds.
In order to obtain the highest lubricant performance, the most tough and challenging conditions in a cement plants we see are: high temperatures, high speeds and heavy loads. "These three conditions will easily diminish the lubricant’s function. For example, at cement plants, the most common environment to which the equipment is exposed to is high temperature, heavy load, and abundant dust," says Tony Liu, Asia Manager, Brugarolas S.A. So, the main goal for the maintenance engineer is to find the way to confront these adverse factors and keep production smooth, offering the highest efficiency possible to the machinery.
Lack of focus
"Industry professionals generally focus their attention on areas of their core competence and achieving their day to day objectives. In doing so, other vital supporting functions like "scientific lubrication" of plant and machinery do not get the desired attention, since functional managers engage themselves only on day to day activities," Mathur points out.
Therefore, storage, handling, dispensing lubricants assume a very important step towards feeding contamination-free lubricating oil or greases to the machine. This is vital for reducing the maintenance costs – which at times goes unnoticed, because of basic thrust being on production only.
Lubricants and lubrication is generally taken for granted and little do operating and maintenance people realize that lubrication planning starts right from the arrival of lubricants in the main stores. "This lack of concern for quality of lubricants definitely leads to increased maintenance costs, costs due to machinery breakdown and loss of production and many hidden costs including cost of manpower involved, Mathur says. As we know, nowadays, cement plants try to push as much as possible for ensuring their efficiency, but, at the same time have the need to reduce costs though energy savings. That is what lubricants which reduce or eliminate friction in the moving parts of the plant and machinery, promise.
There are many instances when the industry turns a blind eye to lubricants. Over the years, the production levels of plants have gone up from 3000 tons per day (T/D) to a boosted 12000 T/D, and from using ball mill technology to roller press machines. Immediate the question that arises is, "If the equipment has upgraded, shouldn’t the lubricants improve too? Yes, obviously. Each machine has different needs, each need has different solution," says Liu.
Solution
It is disappointing to observe that lack of awareness of the fact that various high performance lubricants, manufactured under stringent quality control to meet required quality standards, can give expected results only when they are used in the machinery in the same uncontaminated condition, under which they are manufactured, tested, packed and transported to the user industry.
As long as we can maintain lubricant clean and on-spec in a machine, the lubricant is fit for further usage. Therefore, lubricant has to be kept free of contamination. Water, dirt, suspended impurities and air mixed in lube oil are the worst enemy of lubricant in service. "If these contaminants are not removed timely from lube oil, they can even result in stoppage of the machine resulting in loss of production and leading to unwarranted expenditure to the industry," warns Mathur.
Mathur cited the "Jost report" funded by the British Government in 1966 to study the effects of tribology (a Science of friction which particularly collaborates with lubrication of the machines) on the country"s Gross National Product (GNP), which found that by not following professional practices in lubrication usage in the industry could lead to a huge loss to the country.
Total lube management
Keeping lack of awareness and focus on lubrication management in the industry in view, Mathur suggests adoption of Total Lubrication Management (TLM), a positive and definite step towards achieving improved maintenance, and a tool for cost reduction in manufacturing.
Against the traditional practice of companies buying lubricants and using them in their equipment, some of the Indian cement companies have adopted a new practice – Contract Management – under which the lubricant needs of the company are managed by experienced contractors through their manpower and products, or TLM service.
"A well prepared technical service team along with the maintenance department of the plant, and taking into account the OEM’s recommendation will have to cooperate together in order to achieve installing a correct lubrication plan that will ensure safe and good performance of the equipment," says Brugarolas, which itself is a original manufacturer of a range of lubricants and offers these services.
With the government embarking on a plan to give boost to infrastructure in the coming years, particularly affecting the sectors like construction, cement and mining sectors, the growth in demand for lubricants is expected to rebound, according to industry experts.
– B.S. SRINIVASALU REDDY
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Marketing strategies of cement companies have undergone gradual transformation owing to the change in consumer behaviour. While TV commercials are high on humour and emotions to establish a fast connect with the customer, social media campaigns are focussed more on capturing the consumer’s attention in an over-crowded virtual world. Branding for cement companies has become a holistic growth strategy with quantifiable results. This has made brands opt for a mix package of traditional and new-age tools, such as social media. However, the hero of every marketing communication is the message, which encapsulates the unique selling points of the product. That after all is crux of the matter here.
While cement companies are effectively using marketing tools to reach out to the consumers, they need to strengthen the four Cs of the branding process – Consumer, Cost, Communication and Convenience. Putting up the right message, at the right time and at the right place for the right kind of customer demographic is of utmost importance in the long run. It is precisely for this reason that regional players are likely to have an upper hand as they rely on local language and cultural references to drive home the point. But modern marketing and branding domain is exponentially growing and it would be an interesting exercise to tabulate and analyse its impact on branding for cement.
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Indian cement industry is well known for its energy and natural resource efficiency
Published
2 years agoon
November 18, 2022By
adminDr Hitesh Sukhwal, Deputy General Manager – Environment, Udaipur Cement Works Limited (UCWL) takes us through the multifaceted efforts that the company has undertaken to keep emissions in check with the use of alternative sources of energy and carbon capture technology.
Tell us about the policies of your organisation for the betterment of the environment.
Caring for people is one of the core values of our JK Lakshmi Cement Limited. We strongly believe that we all together can make a difference. In all our units, we have taken measures to reduce carbon footprint, emissions and minimise the use of natural resources. Climate change and sustainable development are major global concerns. As a responsible corporate, we are committed with and doing consistent effort small or big to preserve and enrich the environment in and around our area of operations.
As far as environmental policies are concerned, we are committed to comply with all applicable laws, standards and regulations of regulatory bodies pertaining to the environment. We are consistently making efforts to integrate the environmental concerns into the mainstream of the operations. We are giving thrust upon natural resource conservation like limestone, gypsum, water and energy. We are utilising different kinds of alternative fuels and raw materials. Awareness among the employees and local people on environmental concerns is an integral part of our company. We are adopting best environmental practices aligned with sustainable development goals.
Udaipur Cement Works Limited is a subsidiary of the JK Lakshmi Cement Limited. Since its inception, the company is committed towards boosting sustainability through adopting the latest art of technology designs, resource efficient equipment and various in-house innovations. We are giving thrust upon renewable and clean energy sources for our cement manufacturing. Solar Power and Waste Heat Recovery based power are our key ingredients for total power mix.
What impact does cement production have on the environment? Elaborate the major areas affected.
The major environmental concern areas during cement production are air emissions through point and nonpoint sources due to plant operation and emissions from mining operation, from material transport, carbon emissions through process, transit, noise pollution, vibration during mining, natural resource depletion, loss of biodiversity and change in landscape.
India is the second largest cement producer in the world. The Indian cement industry is well known for its energy and natural resource efficiency worldwide. The Indian cement industry is a frontrunner for implementing significant technology measures to ensure a greener future.
The cement industry is an energy intensive and significant contributor to climate change. Cement production contributes greenhouse gases directly and indirectly into the atmosphere through calcination and use of fossil fuels in an energy form. The industry believes in a circular economy by utilising alternative fuels for making cement. Cement companies are focusing on major areas of energy efficiency by adoption of technology measures, clinker substitution by alternative raw material for cement making, alternative fuels and green and clean energy resources. These all efforts are being done towards environment protection and sustainable future.
Nowadays, almost all cement units have a dry manufacturing process for cement production, only a few exceptions where wet manufacturing processes are in operation. In the dry manufacturing process, water is used only for the purpose of machinery cooling, which is recirculated in a closed loop, thus, no polluted water is generated during the dry manufacturing process.
We should also accept the fact that modern life is impossible without cement. However, through state-of-the-art technology and innovations, it is possible to mitigate all kinds of pollution without harm to the environment and human beings.
Tell us about the impact blended cement creates on the environment and emission rate.
Our country started cement production in 1914. However, it was introduced in the year 1904 at a small scale, earlier. Initially, the manufacturing of cement was only for Ordinary Portland Cement (OPC). In the 1980s, the production of blended cement was introduced by replacing fly ash and blast furnace slag. The production of blended cement increased in the growth period and crossed the 50 per cent in the year 2004.
The manufacturing of blended cement results in substantial savings in the thermal and electrical energy consumption as well as saving of natural resources. The overall consumption of raw materials, fossil fuel such as coal, efficient burning and state-of-the-art technology in cement plants have resulted in the gradual reduction of emission of carbon dioxide (CO2). Later, the production of blended cement was increased in manifolds.
If we think about the growth of blended cement in the past few decades, we can understand how much quantity of , (fly ash and slag) consumed and saved natural resources like limestone and fossil fuel, which were anyhow disposed of and harmed the environment. This is the reason it is called green cement. Reduction in the clinker to cement ratio has the second highest emission reduction potential i.e., 37 per cent. The low carbon roadmap for cement industries can be achieved from blended cement. Portland Pozzolana Cement (PPC), Portland Slag Cement (PSC) and Composite Cement are already approved by the National Agency BIS.
As far as kilogram CO2 per ton of cement emission concerns, Portland Slag Cement (PSC) has a larger potential, other than PPC, Composite Cement etc. for carbon emission reduction. BIS approved 60 per cent slag and 35 per cent clinker in composition of PSC. Thus, clinker per centage is quite less in PSC composition compared to other blended cement. The manufacturing of blended cement directly reduces thermal and process emissions, which contribute high in overall emissions from the cement industry, and this cannot be addressed through adoption of energy efficiency measures.
In the coming times, the cement industry must relook for other blended cement options to achieve a low carbon emissions road map. In near future, availability of fly ash and slag in terms of quality and quantity will be reduced due to various government schemes for low carbon initiatives viz. enhance renewable energy sources, waste to energy plants etc.
Further, it is required to increase awareness among consumers, like individual home builders or large infrastructure projects, to adopt greener alternatives viz. PPC and PSC for more sustainable
resource utilisation.
What are the decarbonising efforts taken by your organisation?
India is the world’s second largest cement producer. Rapid growth of big infrastructure, low-cost housing (Pradhan Mantri Awas Yojna), smart cities project and urbanisation will create cement demand in future. Being an energy intensive industry, we are also focusing upon alternative and renewable energy sources for long-term sustainable business growth for cement production.
Presently, our focus is to improve efficiency of zero carbon electricity generation technology such as waste heat recovery power through process optimisation and by adopting technological innovations in WHR power systems. We are also increasing our capacity for WHR based power and solar power in the near future. Right now, we are sourcing about 50 per cent of our power requirement from clean and renewable energy sources i.e., zero carbon electricity generation technology. Usage of alternative fuel during co-processing in the cement manufacturing process is a viable and sustainable option. In our unit, we are utilising alternative raw material and fuel for reducing carbon emissions. We are also looking forward to green logistics for our product transport in nearby areas.
By reducing clinker – cement ratio, increasing production of PPC and PSC cement, utilisation of alternative raw materials like synthetic gypsum/chemical gypsum, Jarosite generated from other process industries, we can reduce carbon emissions from cement manufacturing process. Further, we are looking forward to generating onsite fossil free electricity generation facilities by increasing the capacity of WHR based power and ground mounted solar energy plants.
We can say energy is the prime requirement of the cement industry and renewable energy is one of the major sources, which provides an opportunity to make a clean, safe and infinite source of power which is affordable for the cement industry.
What are the current programmes run by your organisation for re-building the environment and reducing pollution?
We are working in different ways for environmental aspects. As I said, we strongly believe that we all together can make a difference. We focus on every environmental aspect directly / indirectly related to our operation and surroundings.
If we talk about air pollution in operation, every section of the operational unit is well equipped with state-of-the-art technology-based air pollution control equipment (BagHouse and ESP) to mitigate the dust pollution beyond the compliance standard. We use high class standard PTFE glass fibre filter bags in our bag houses. UCWL has installed the DeNOx system (SNCR) for abatement of NOx pollution within norms. The company has installed a 6 MW capacity Waste Heat Recovery based power plant that utilises waste heat of kiln i.e., green and clean energy source. Also, installed a 14.6 MW capacity solar power system in the form of a renewable energy source.
All material transfer points are equipped with a dust extraction system. Material is stored under a covered shed to avoid secondary fugitive dust emission sources. Finished product is stored in silos. Water spraying system are mounted with material handling point. Road vacuum sweeping machine deployed for housekeeping of paved area.
In mining, have deployed wet drill machine for drilling bore holes. Controlled blasting is carried out with optimum charge using Air Decking Technique with wooden spacers and non-electric detonator (NONEL) for control of noise, fly rock, vibration, and dust emission. No secondary blasting is being done. The boulders are broken by hydraulic rock breaker. Moreover, instead of road transport, we installed Overland Belt Conveying system for crushed limestone transport from mine lease area to cement plant. Thus omit an insignificant amount of greenhouse gas emissions due to material transport, which is otherwise emitted from combustion of fossil fuel in the transport system. All point emission sources (stacks) are well equipped with online continuous emission monitoring system (OCEMS) for measuring parameters like PM, SO2 and NOx for 24×7. OCEMS data are interfaced with SPCB and CPCB servers.
The company has done considerable work upon water conservation and certified at 2.76 times water positive. We installed a digital water flow metre for each abstraction point and digital ground water level recorder for measuring ground water level 24×7. All digital metres and level recorders are monitored by an in-house designed IoT based dashboard. Through this live dashboard, we can assess the impact of rainwater harvesting (RWH) and ground water monitoring.
All points of domestic sewage are well connected with Sewage Treatment Plant (STP) and treated water is being utilised in industrial cooling purposes, green belt development and in dust suppression. Effluent Treatment Plant (ETP) installed for mine’s workshop. Treated water is reused in washing activity. The unit maintains Zero Liquid Discharge (ZLD).
Our unit has done extensive plantations of native and pollution tolerant species in industrial premises and mine lease areas. Moreover, we are not confined to our industrial boundary for plantation. We organised seedling distribution camps in our surrounding areas. We involve our stakeholders, too, for our plantation drive. UCWL has also extended its services under Corporate Social Responsibility for betterment of the environment in its surrounding. We conduct awareness programs for employees and stakeholders. We have banned Single Use Plastic (SUP) in our premises. In our industrial township, we have implemented a solid waste management system for our all households, guest house and bachelor hostel. A complete process of segregated waste (dry and wet) door to door collection systems is well established.
Tell us about the efforts taken by your organisation to better the environment in and around the manufacturing unit.
UCWL has invested capital in various environmental management and protection projects like installed DeNOx (SNCR) system, strengthening green belt development in and out of industrial premises, installed high class pollution control equipment, ground-mounted solar power plant etc.
The company has taken up various energy conservation projects like, installed VFD to reduce power consumption, improve efficiency of WHR power generation by installing additional economiser tubes and AI-based process optimisation systems. Further, we are going to increase WHR power generation capacity under our upcoming expansion project. UCWL promotes rainwater harvesting for augmentation of the ground water resource. Various scientifically based WHR structures are installed in plant premises and mine lease areas. About 80 per cent of present water requirement is being fulfilled by harvested rainwater sourced from Mine’s Pit. We are also looking forward towards green transport (CNG/LNG based), which will drastically reduce carbon footprint.
We are proud to say that JK Lakshmi Cement Limited has a strong leadership and vision for developing an eco-conscious and sustainable role model of our cement business. The company was a pioneer among cement industries of India, which had installed the DeNOx (SNCR) system in its cement plant.
Concrete
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Published
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