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.
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