Industrial Filters Uses

All new systems will contain some contaminant left during manufacture and assembly. This usually consists of fibrous material from rags, casting sand, pipe-scale, cast iron and other metal particles, jointing material and loose paint.

When a normal system has been run-in for a reasonable period, the majority of solid contaminants will be in the form of small platelets, created by bedding-in and the normal wear process, the bulk of which are between 5 and 15 microns in size. Because of their size and shape, they can take a long time to settle.

The other common form of self-generated contaminant is that local cold welding microscopic surface particles will be torn off when they move in relation to each other releasing wear particles.

Unless extreme care is taken in filling and topping up a system, considerable quantities of contaminant can be added during these processes. Many of these contaminants are likely to be abrasive.

A lubricating system can also be contaminated by ingression through the oil film on seals. Worn seals will increase this possibility. Contamination will be introduced if all reservoir openings are not fitted with Industrial Filters.

The other mechanisms that cause self-generating contaminants include: adhesive, abrasive, erosion, fatigue, de-lamination, corrosive, electro-corrosive, fretting corrosion, cavitation, electrical discharge and polishing wear. Each of these types of wear categories has its own mechanism and symptoms, however in practice they may occur singularly, combined or in sequence.

A new lubricant fill in a machine is kept clean by the action of Industrial Filters and by the chemical action of the additive package in the lubricant. The types of filters used in most instances remove solid or gelatinous particles to the limits of the filter. These filters do not generally remove the liquid or gaseous contaminants.

Effective contamination control is not just a matter of filters. System planning, location of filters, heat exchanger capacity, etc. are but a few of the items that have been considered in a machine’s design to reduce the generation of particulate contamination.

Barring isolated instances, it is generally recognized that by having clean lubricant, equipment will give better performance and more reliability. Changing filter elements at given regular time interval, is not desirable, nor necessary.

If installed, filter elements should be changed whenever the differential pressure across the filter exceeds the suggested maximum differential. The degree of filtration (micron rating) will depend on the type of equipment and /or the manufacturers recommendations.

Industrial Filter

Activated carbon (AC) is a natural material derived from bituminous coal, lignite, wood, coconut shell etc., activated by steam and other means, and each one have different adsorption properties (e.g. bituminous carbon for high chlorine reduction capacity). We also use various blends of carbon to achieve specific water quality and contaminants reduction (e.g .coconut shell carbon for "sweet taste". The rapid gravity sand filters is a type of Industrial Filters commonly used in municipal water treatment facilities. Rapid sand filters use relatively coarse sand and other granular media to remove particles and impurities that have been trapped in a floc through the use of flocculation chemicals - typically salts of aluminium or iron. Water and flocs flows through the filter medium under gravity pressure and the flocculated material are trapped in the sand matrix. Rapid filters are usually built open with the water passing down the filter but by gravity. It has a filter rate of 4 – 8 m3/m2/hr. The tank is made of concrete with a depth of 3.0 to 3.5m. Coarse sand of size 0.4 to 1.5mm is used as the filter medium. A screen rapid sand filter is a type of filter utilizing a rigid or flexible screen to separate sand and other fine particles out of water for irrigation or other applications.

Typical screen materials include stainless steel (Mesh), polypropylene, and nylon. Glandofilters is the leading Indian water and wastewater Treatment Company providing the most comprehensive water and waste water treatment systems and services for industrial, institutional and municipal customers. Through a pioneering approach in water and waste water treatment, Shubham works to service its clients through a holistic approach. It is known to be the powerhouse in products, systems and services for water & waste water treatment serving a large customer base from diverse groups of municipal & government institutions, Large Industries, laboratory, commercial sectors and various sectors where the very element water comes into picture. Company delivers technology designed to substantially lower costs, provide more flexibility in choosing operating systems, and offer a more automated and resilient systems infrastructure capable of responding to variable business demands.

Industrial Products

Former President of Lahore Chamber of Commerce and Industry (LCCI) Mian Anjum Nisar said the industry was crippled by 67 percent increase in electricity tariff, 18 percent mark-up rates and the energy crisis. “The industry in Punjab was more affected last year because the government discriminated against it by not providing gas to it. This resulted in higher production cost for us than for units in other provinces. This makes Punjab industry uncompetitive within the country. Up to 1,500 industrial units were closed only because of this.”

Once an industry shuts down, its financial problems increase because it has to pay financial charges without any revenues, he said. “We faced gas load shedding for 125 days while other provinces got smooth gas supply round the year,” Nisar said.

Asmat Pervaiz, a former chairman of Pakistan Steel Re-Rolling Mills Association, said the industry’s production stood at 0.7 million metric tons in 2010, which was only 20 percent of its capacity. “In winter, almost 100 percent industry was closed. It hadn’t run at full capacity in summer either, mainly because of non-availability of gas and electricity.”

The decline in production was not reflected in prices because of economic slowdown in the country, which reduced construction activity, Pervaiz said. “Over 200,000 people are employed in Punjab steel melting industry who started crying when we asked them to go on leave. We are unable to cope with this situation as almost all the industry is running in losses.”

Textile sector and auto parts industry, however, registered growth during the year.

Syed Nabeel Hashmi, vice chairman of Pakistan Association of Automotive Parts and Accessories Manufacturers (PAPAM), said motorcycle production increased to 1.7 million units from 1.4 million units. “Car sector registered eight percent growth which is encouraging in Pakistan’s current economic situation. Tractor production also increased following growth in rural income,” he said.

Hashmi said that some vendors faced problems in recovering dues from Chinese manufacturers.

Textile export grew by 25 percent and profit before tax of the sector registered an increase of 20 to 22 percent.

Chairman of All Pakistan Textile Mills Association (APTMA) Gohar Ijaz said increased prices of raw cotton shifted over Rs200 billion to the rural economy and benefited the farmers. But, he said, the industry faced various challenges including energy shortage and high mark-up rates. “New investment in the textile industry has stopped,” he remarked. He further said EU concession to the Pakistani products was a major breakthrough in 2010 but the government failed to exploit this because it ignored the real stakeholders.