MAKING THE BEST DECISION FOR YOUR NEW BOILER

Transcription

1 MAKING THE BEST DECISION FOR YOUR NEW BOILER Dennis Miller Marketing Manager B&W Energy Services

2 MAKING THE BEST DECISION FOR YOUR NEW BOILER Proper pre-commissioning is vitally important to the life expectancy and long-term efficiency of industrial machineries and equipment. If neglected or poorly precommissioned, new boilers can turn into old boilers years before their time. Making the wrong decision in the pre-commissioning stage will lead to an exponential loss of efficiency and profits. To effect the maximum cost savings and increased profits, pre-commissioning cleaning must be performed by knowledgeable teams who understand the intricacies of your particular system. B&W Energy Services is committed to informing you of all the resources available to make the best decision based on sound practices and decades of experience. For new boilers especially, it is critical that every detail be taken into account and all cleaning options be thoroughly explored to make the most of your investment. Boiler tubes containing mill scale and other deposits create long-term reliability problems for the boiler. Deposits insulate the water in the tubes from the fire, which causes the metal temperature to increase dramatically between the mill scale and the tube metal. Long-term overheating of the metal will result in reduced efficiency from prolonged operation with heavy tube deposits. The tubes will first bulge and then fail. Because the deposits tend to be widespread, this generally means that large sections of boiler tubing will be damaged and require replacement. The increased metal temperature generated by these deposits increases the rate of corrosion caused by any phosphate, caustic, or chloride underneath the deposits. With the exception of corrosion fatigue, all the waterside boiler tube failure mechanisms occur under these deposits. Get rid of the mill scale and other deposits and

3 you reduce the waterside tube failures, allowing for maximum unit life expectancy. CONSIDER THIS WHEN DECIDING ON THE BEST METHOD FOR YOUR NEW BOILER PRE-OPERATIONAL CLEANING EQUIPMENT TO BE CLEANED MAY INCLUDE THE FOLLOWING: Unfortunately, in many cases, the practice of trial and error during the pre-commissioning and commissioning stages continues to be a common approach in our industry. When choosing the proper method for your system it is all-important to partner with a company who will take the time to detail their process and fully explain every option available to save valuable time and optimize your investment. No one does this better than B&W Energy Services. Typically, the OEM provider has set a standard minimum cleaning process based on cost, experience, and the metallurgy of the entire system. Successful chemical cleaning will result in a trouble free startup and increased life of the boiler, eliminating the need for major maintenance. When chemically cleaning, the following factors should be considered: Type of design, amount of flow, operating temperature, and pressure of the steam generator Characteristics and quantity of deposits Most pre-operational cleaning methods include as a minimum a boilout or hot degreasing. The internal surfaces of a new boiler will contain elements inherent in manufacturing procedures, such as grease, protective coating, and residual oil. To remove these deposits, a boil-out or hot degreasing may be sufficient, but it will not address the removal of potentially harmful new construction debris, mill scale, and weld slag that will adversely effect boiler efficiency and operating costs. In order to reduce operational shutdowns and delays due to reduced heat transfer and premature tube failure, a full, one step degreasing and acid cleaning should be considered. Boiler/economizer Condensate/feedwater systems Superheater/reheater Main steam lines Compatibility of the cleaning solvent with system metallurgy BEFORE Method of spent solvent disposal Availability of demineralized water or condensate Safety and cost AFTER

4 It is essential to consider the metallurgy in the systems to be cleaned. With new technologies and the implementation of exotic metals in today s superheaters and high-pressure steam lines, hazardous waste can be generated and will ultimately affect the method by which a proper and safe cleaning should be conducted. B&W Energy Services will guide you in making the right choice of how much to clean and at what cost. The pre-commissioning of your new boiler requires a major financial decision. The company you choose to partner with at this stage will significantly impact the future profitability of your project. B&W Energy Services will walk you through every step of the process, ensuring that every measure is taken to improve productivity and decrease future expenditures. Our experience in working on the world s most complex pre-commissioning and commissioning projects makes us the industry s first choice in industrial cleaning services. We invite you to join the ranks of industry leaders and partner with B&W Energy Services. Give us a call and we ll show you the value of true, experienced professionals eager to detail and perform customized solutions for all your pre-commissioning and commissioning cleaning needs.

5 For more information or to engage B&W, contact Chris Oakley at B&W Energy Services by calling , ing or visit