Regarding the waste heat boiler of the sintering machine or the waste heat boiler of the gas turbine
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Gentlemen, I have a question I’d like to discuss: In the waste heat boilers used alongside sintering machines in steel mills, or in the waste heat boilers of gas turbines, the processes are similar. If the waste heat boiler for the sintering machine is of dual-pressure type, then is the total amount of medium-pressure steam plus the amount of low-pressure steam equal to the amount of condensate water?
They are all double-pressure systems, equipped with make-up steam turbines. The purpose of using double pressure is to make full use of low-grade waste heat; that’s correct, believe me!
How could that be? That’s the case with so many operating waste heat power plants derived from sintering; there are also waste heat power plants powered by gas turbines. Your reasoning isn’t convincing enough – keeping things mysterious like this won’t suffice
It’s okay; I’ve been working on designs all along, but I really haven’t seen this type of waste heat boiler or power plant before
No, Xizi’s product is actually a Hangzhou-style boiler; such boilers are produced in large quantities, so there’s nothing special about them. I used to work at Jiangsu Taihu Boiler Company, and now I’ve left that job to work on a few similar projects
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By dual pressure you mean the turbine with make-up steam, right? What we use is purely low-pressure technology, with supplementary steam as well; indeed, the addition of such steam increases power generation, but the increase is minimal. Moreover, it places greater demands on the operators, and this presents significant disadvantages for waste heat power generation
I’ve read an article that said the same thing, and it proposed a good solution: due to pressure losses, low-pressure steam arrives at the turbine with little pressure left, resulting in a significant reduction in its capacity to do work. It would be better to feed low-pressure saturated water directly into the turbine room, where it can then turn into steam in a flash tank. This approach seems quite good – it simplifies the boiler’s steam and water flow systems as well as the layout of the heating surfaces, while also ensuring efficiency.
I have been to many sites and have worked on numerous project designs, but I’ve never encountered something like the utilization of waste heat from sintering machines. I would appreciate it if someone could explain to me: in the boiler used to utilize waste heat from sintering, does the steam used for self-deoxidation also come from the low-pressure superheater?
There is definitely a effect; we are installing a flash tank above the turbine room. Going straight to steam supplementation means that high demands are placed on the operators. As for the flash tank, it’s really enjoyable to use; these are all mature technologies that have been used many times before
I understand. Once you’ve finished working on that patent, could you please write an article or provide some explanations regarding the water flow system in the waste heat boilers of sintering machines? Thank you in advance