Author Archives: blue

Fiberglass Fan For Chemical Industry

Chemicals industry provides the widest range of challenges for rotating equipment. CB Blower Co. fans and blowers operate in conditions encompassing extreme pressure and temperature, and handle a wide range of gases containing aggressive and toxic components. Demanding specifications and strict safety requirements must be met and above all is the need for dependable operation over long periods.

CB Blower Co. fans meet the challenge of moving gases continually, reliably, efficiently and safely. They are built to API, or equivalent industry standards and their performance has been proven over many years of operation; and the blowers can meet unusual requirements that include dual drive systems with automatic drive engagement / disengagement and special materials of construction.

CB Blower Co. fans and pressure blowers are found in all major process plants. The range of applications is very wide but includes:

� custom engineered centrifugal process fans for combustion air supply. These may be used directly for fired heaters for ethane or naphtha cracking plant and for processes with steam reforming such as methanol, or for boilers serving general utilities. Flue gas extraction and tail gas clean up are among the other applications for which we have supplied custom fans.
� auxiliary boiler and other pre-engineered fans.
� cooling fans for mechanical draught cooling towers, air-cooled heat exchangers and air-cooled condensers.
� turbo blowers for sulphur recovery combustion and reaction air, sulphuric acid and carbon black plant
� screw type pressure blower systems for process gas handling, notably for butadiene plants, gas turbine gas fuel compression and process refrigeration.
� reciprocating turbo blowers for hydrogen processes – hydrocracking, visbreaking, catalytic reforming

The demands placed on equipment in the chemical industry are particularly high. Toxic, corrosive and unstable gases are frequently a part of chemical production processes. Maintaining the purity of gases being handled is a priority in the pharmaceutical and biological industries. CB Blower Co. supply a range of fan / blower types to the chemical industry, from fans for boiler and incineration plants that supply heat and process steam, to fans that are used on exhaust and emissions control systems to equipment that handles the materials being processed. In such a diverse industry the range of applications is very wide but there is often the need for special materials to prevent corrosion by gases such as wet hydrogen chloride and hydrogen sulphide. The blowers are adapted to meet these special needs.

New Methods Of Ventilation

A common problem in the average plant is “air starvation”. Exhaust systems throughout the structure may have been well designed for their intended purpose. However, no consideration may have been given to the replacement of exhaust air. As a result, the building may be under severe negative pressure. This situation reduces the efficiency of the exhaust fans and produces unhealthy and uncomfortable working conditions. Substantial economy and efficiency can be obtained by correcting this situation through the use of supply fans or “make-up air” units. Many buildings have adequate exhaust and supply fans to provide a comfortable environment for the occupants. Unfortunately, there may be little control over the distribution of the air to produce the desired results. Good planning will recognize the necessity for proper air distribution and circulation through the occupied areas of the building. Suitable deflectors and baffles can be incorporated where needed. “Booster fans” or air circulators can be positioned to take care of trouble spots and augment the direction and velocity of the air flow. Diffusers may be required lo assist in air distribution. Drafts and dead spots can thus be eliminated. All of these are inexpensive aids that can ensure that a well planned system will achieve its important objectives.

Exhaust fans are usually located near the area where heat-producing machinery is found in the industrial building. This has the very practical advantage of exhausting this superheated air near its source and preventing a heat build-up in other areas. If side wall locations are to be utilized for air intake or exhaust, it is desirable to consider the prevailing wind direction during the summer season. If the ventilation system can be oriented to take advantage of prevailing winds, the efficiency of the system may be increased considerably, Systems that incorporate roof exhausters are usually not affected by a prevailing wind.

Where air velocity is the critical factor in a breeze conditioning system, use of the “long dimension” of the building or room is highly desirable. By moving air through the long dimension, the cross-sectional area is reduced and less air volume is required to obtain the needed air velocity. A vital element in the successful breeze conditioning system is a supply of clean, cooler, fresh air. While such an ideal air supply may not be available, common sense dictates that air being supplied into the building should be from the best available source. Avoid recirculating air that has just been exhausted from the building or another nearby structure.

The noise level in most commercial and industrial buildings has become a highly critical matter. Although the ventilating equipment is only one item in the overall total, its effect should be carefully considered. If the normal noise level in the building is low, the noise level of the ventilating equipment should be low; if the background noise level is high, the amount of noise added by the ventilation system may be insignificant

High Temperature Industrial Fan

For industrial fans applications, it is necessary to consider high cycle fatigue, low cycle fatigue in cyclical operation with speed changes, and numerous start-stop cycles. If rapid temperature changes are encountered, transient analysis may be required due to thermal stresses. When fans are exposed to elevated temperatures, many aspects of the fan design must be reviewed to make sure the fan will withstand the extreme temperatures and that the fan is appropriately designed for the application. Depending on the exposed temperature levels, the following are to be considered:

� Materials of construction for the wheel, shaft, and hub
� Wheel to hub attachment
� Materials of construction for the housing including insulation
� Bearings and lubrication
� Shaft seals
� Shaft cooling (air-cooled, water-cooled, etc.)

Limits on the operating temperature for standard fans are defined by the arrangement of the fan. For example, the maximum temperature for a standard fan that does not have a bearing in the airstream can run up to 300F. For standard fans that have a bearing in the airstream, the maximum operating temperature is limited to the maximum temperature that the bearing can handle, which is typically about 130F.

Carbon steel, low alloy high strength steels, and chrome moly steels are satisfactory for a temperature range of 900 to 1000F, depending on stress levels. Heat resistant alloys such as stainless steels (304, 316, 347), Incalloy 800HT, 230, Inconel (600, 625, 617), Multimet, Haynes 25, etc. should be used for higher temperatures up to 1800F. Again, the material chosen also depends on the stress levels and the material properties at elevated temperatures. Temperature derates lower the maximum speed of a wheel to account for the lower material strength at elevated temperatures. The wheel must sustain the highest stress of all the fan components. It is very important that the material used on the wheel is strong enough to handle the stress at high temperatures. At higher temperatures, material eep must be considered.

Choosing Industrial Fan

Types, Modes and Mounting of Blower and industrial fans are:

Blower fans and industrial fans consist of one of two main modes: radial industrial blowers and axial industrial blowers. The needed air is produce through circulating blades of the blower fan directing the flow based on the modes mentioned (radial or axial). Blower fans and industrial fans are of different types. It may be plastic mode or metal mode and at times it may be combination of both.

There are different sizes of the model of these fans and these differences worth noting because of their importance. At times, work environment determines the size of the fans to be used to meet the need of the user. Some units are hung into the structure of an environment along with vibration absorbent brackets that contain both the industrial fans themselves and their power supply. For space that requires temporary circulation or air transfer such as construction sites or during clean up spills or water damage, portable and handy fans are useful in such area due to their temporary use.

Functions of Blower fans and Industrial fans include:

Blower fans and industrial fans are multifunctional gadgets in the industrial application where they are used. They both offer health benefits by reducing the odors and blowing away and refreshing the polluted and contaminated air. They also blow away smoke from where it is not demanded. Their provision of environmental benefits through decrease in heat and humidity levels also made them a must for every industry irrespective of their size. They are available in a wide number of configurations that vary in from airflow route to speed. So decide to make your choice.

A proper ventilation system for a roof is often the single most important factor which governs its longevity. A roof having a good ventilation system, along with proper maintenance will live approximately 25% more than any other roof.

A well maintained roof a source of pride for a household. It lives longer and gives no trouble to the members living within the building. A roof is also the structure within a building which is exposed to the maximum extent to natural elements like winds, snow, hail and sunlight. This demands extra precautions and care for the roof. However, the roof also remains the most neglected part of any building, may it be a home or a utility building. The most important aspect of a roof is its ventilation system.

How To Create Successful Mba Presentation

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Safety Net And Bird Net Manufactures

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we are named as the noticeable suppliers and makers of Safety Net in India. Safety Net is an item which is broadly utilized as a part of development industry. The safety net is produced by most recent hardware which expands its sturdiness and consequently underpins substantial loads and empowers the specialists to work at tallness without apprehension. These nets are broadly utilized at development destinations and are fundamentally utilized where the utilization of stepping stools, get stages, interim floors.

We are assistant in offering a wide show of Anti Bird Nets to our customers. Determined with flawlessness, we are occupied with indulging the variegated prerequisites of the clients by yielding a thorough Anti Bird Net. They are UV stabilized henceforth not effected by whatever may happen. Created in such way that it has a noticeable boundary, these nets give an unsteady surface, which can terrify flying feathered creatures from arriving. Outlined with flawlessness, our offered nets are made under the direction of our experts.

We penance a tough extent of against winged creature nets, which are utilized to give assurance to harvests and plants from feathered creatures. These are amazingly light in weight and can blanket the whole enclosure from every one of the four sides. These nets have high imperviousness to different atmosphere changes and barbarous sun beams and require less support. We produce hostile to winged animal nets and attempt establishment ventures for residential and modern locales. With the assistance of our encountered experts, we have the ability to produce unrivaled quality Anti Bird Nets. These Anti Bird Nets are tremendous request in the business sector because of great and strength. These items are accessible at aggressive rates.
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