Projects

ESP should be retrofitted with pulsejet dust collector in efficient manner

Published

9 years ago

April 30, 2015

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Arnav Mahapatra, Chief Executive Officer, Ruedo Engineering.

During calculation, we consider the product recovery, energy efficiency, emission standard, lowest maintenance and fit and forget system for few years, says Arnav Mahapatra, Chief Executive Officer, Ruedo Engineering. Excerpts from the interview…

What are the requirements for the filters used in cement manufacturing?
Recently various upgradation take place in designing dust collection system. Pulse jet dust collector can handle 30 g/cu m. In cement application dust load is very high up to 130 g/cu m. So pre-collector like cyclone are used to reduce the dust load in dust collector. Now combined pre-collector with pulsejet dust collector is more effective with down flow dirty air inlets. The selection of filter fabric to achieve the lowest emission level as well as low pressure drop and temperature resistance has to be done by the manufacturer of the needle felt fabric. As per application demand size of fiber selection required (viz micro fibre or standard fiber or the combination) mixture of two fibre for chemical compatibility, strength and temperature resistance. surface coating, PTFE lamination or micro fiber on dust side.

What is the range of filters?
As the process hot gas (>150oC) contain high pH towards alkali, PTFE fabric, polyamide mix with PTFE, meta aramid, sometime aramid, polyamide with PTFE membrane are used.

Process dust (<150oC) polyester with micro fibre construction on dust side is more feasible. For coal milling – mixture of PAN-homopolymer and polyester is more preferable.

What is the scope of hybrid filters in the Indian cement industry?
Peoples want to make ESP and dust collector in combination to upgrade the emission in ESP. But instead of making hybrid, ESP should be retrofitted with pulsejet dust collector in efficient manner.

What are the trends in filter media for bag filters?
People still buy filter bag on L1 price with compromising performance leading to high maintenance part reducing the production, wastage of money by changing few bags, compromising leakage as well as emission and more power intensive. Purchaser has to deal on performance based quality with clauses to make it real economic investment for spares.

Brief us on the value additions offered by your company.
We can offer the expertise to design the dust collector as per performance based benchmark, retrofit the old system, and we can guide retrofitting the ESP. We are high end manufacturer of filter bag, pleated bag and cages, importer of quality needle felt fabric from Germany or European Company at China and Indian agent of SBFEC (W.L Gore JV) for pulse valve and controller. We use premium quality raw material for optimum operation and performance with economic consideration for totality. We have good technological back up team and technical back up from manufacturer of raw materials. Our price may be high, but the environmental impact is less. During calculation we consider the product recovery, energy efficiency, emission standard, lowest maintenance and fit and forget system for few years.

Projects

Adani Group to invest Rs 55,000 cr in Gujarat projects, including cement plant

Published

3 years ago

October 21, 2021

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Billionaire Gautam Adani announced over Rs 55,000 crore investment in next five years in a clutch of projects in Gujarat including the world’s largest solar park, a copper plant, a cement unit, and a lithium battery manufacturing complex, envisaging direct employment to 50,000 people.

Adani Group, which operates Mundra port in the state, announced plans to foray into petrochemical business with a Rs 16,000 crore project with German chemical major BASF.

Speaking at the 9th Vibrant Gujarat Summit here, Adani said his group’s investments in Gujarat in the past five years exceed Rs 50,000 crores and “we are further accelerating our investments.”

“Over the next 5 years, our investments will include the world’s largest solar hybrid park in Khavda. The anticipated investment in this park is Rs 30,000 crore. We also plan to establish a 1 GW Data Center Park in Mundra, a one million ton copper smelting and refining project, a cement and clinker manufacturing unit in Lakhpat, an integrated Lithium battery manufacturing complex and expand our Photovoltaic manufacturing capabilities. Overall, we anticipate a total of Rs 55,000 crore of investment in all these projects,” he said.

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Projects

Bangladesh’s Chhatak Cement announces modernisation project

Published

3 years ago

October 21, 2021

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Bangladesh’s Chhatak Cement Co Ltd has announced plans to modernise its facility and convert it from wet process to dry process. The company has begun to prepare a development project proposal, with a schedule to implement the upgrades by 2021.

According to company officials, Chhatak Cement has incurred an accumulated loss of over BDT3.63bn (US$43.25m) between FY13-14 and FY17-18, mainly due to its outdated machinery resulting in loss of production capacity. The plant is currently operating at 70,000 tonnes per annum (tpa).

However, the new project is anticipated to boost production capacity and increase annual company profit to around BDT1bn. The modernisation is expected to be financed by a BDT8.9bn investment from the government, with BDT5.34bn as a loan with a payback period of seven years and the rest as equity, according to The Financial Express.

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Projects

Forced shutdown of Viet-Dung Quat cement plant in Vietnam

Published

3 years ago

October 19, 2021

admin

The Dai Viet-Dung Quat cement plant has been forced to temporarily shut down in the central province of Quang Ngai due to environmental pollution. Since 26 May, the locals had gathered in front of the plant to call for a shutdown.

Director of Central Region Cement JSC Trinh Van Dien, investor in the Dai Viet-Dung Quat cement plant, said, “We invited an environmental monitoring team to check the dust concentration and the results are safe. The local Department of Natural Resources and Environment hasn?t reached a conclusion on the noise level yet.”

He added, “We?ve had to temporarily close the plant, meaning we”re losing VND300m (US$13,437) and the 100 workers are kicking their heels at home. I don”t know what to do.”

The ground clearance work should have been done this year but the coal-powered plant project was delayed until 2020. As a result, the ground clearance work has also been delayed.

According to the locals, they want to be compensated for the relocation if the plant stays. “We don?t want to stay. We have to move,” local Nguyen Ne said.

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