PROCESS EQUIPMENT


Reduce steam consumption with MIYAWAKI TB-Series temperature control trap.


Nowadays the reduction of energy consumption is not only driven by cost reduction efforts, it is a matter of responsibility towards our whole society and future existence on the planet. When it comes to ways to reduce the energy demand in industrial plants, especially in refineries and chemical plants, the first thing that usually comes to mind is the improvement of big process equipment or the switch to electrically powered solutions incl. the change to sustainable electricity sources.


The optimization of large equipment and the proper design and improvement of processes may have a big influence on the total heat consumption. Such projects are usually big projects with high CAPEX, shutdowns for construction work and high efforts in the design phase.


Most of energy across all industries goes into heat. In fact, typically more than 70% of industrial energy consumption is used to generate heat, often conveyed by steam.


To optimize the current steam networks is an easy and fast to implement concept to influence scope 1 and scope 2 emissions, without big re-design projects and high expenditures.


Using the right type of steam trap for the right application, especially on steam main lines and heating lines, will directly influence the steam loss and the efficiency of the network.


MIYAWAKI offers a steam trap series that can actively help to reduce the steam consumption in steam networks. MIYAWAKI TB series is a series of temperature control trap – a bimetal trap, which allows to set the discharge


temperature of the condensate and therefore allows to use not only the latent, but also the sensible heat, if applicable.


Designed to reduce the energy consumption by controlled subcooling, these steam traps reduce up to 87 % of the steam consumption, depending on application and trap type.


Utilizing the MIYAWAKI patented SCCV valve system, the TB series traps also provide an outstanding lifetime, even under severe operating conditions.


Operation on steam mains Main lines typically operate with superheated steam. TB traps with their defined subcooling of condensate ensure


outstanding tightness and high reliability. The SCCV system-ensures a tight closing of the trap and prevents mechanical damages, even under high differential pressures. The subcooling can be adjusted, so the traps can meet the individual operation conditions. Our specialists offer support with calculation of the best set temperature for each case.


Often it is said that subcooling can pose a danger, due to condensate backing up and create waterhammer – measurements show, that this is not the case with MIYAWAKI. Subcooled condensate rarely backs up more than a few centimeters, but in case critical piping scenarios, our specialists can always calculate the related condensate backlog and advise an alternative setting.


Comparative measurements in a refinery (fig 1.) show an average saving of 46% on steam main lines. Given a


consumption of 100 kg/h and a workload of 7.728 hrs/year this is an equivalent of 355 to/year*steam trap, compared to thermodynamic steam traps.


Compared to an uninsulated mechanical trap at a main line, the bimetal temperature control trap saves 0,055 kg/h steam consumption At the same operating conditions this still results in a saving of approx. 425 kg of steam/ trap*year


Fig 1:steam savings compared TB to disc type MARCH/APRIL 2023 www.reviewonline.uk.com


Given the quantity of installed traps at main lines in a plant, this alone can save hundreds of tons of steam per year –


7


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32