Manufacturers of catalytic main fans and exhaust fans
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We are the manufacturer of the catalytic main fans and exhaust fans; our exhaust fans are from Lanlian, while the axial flow fans are from Shaanxi Blower. Our plant has a processing capacity of 1.4 million tons, and it has been in operation since 2008, running simultaneously with the main unit, without any major failures to date. I’m curious to know which manufacturers’ products you are using and what the performance is like
Lanlian’s equipment is okay; Shanggu and Shenggu’s equipment works as well. Most of the companies in China that produce these devices used to be state-owned enterprises.
The smoke extractors used in our factory are high-efficiency models from Chenghangfa, while the fans are from Shaanxi Gas Turbine. The smoke extractors produced by Chenghangfa are quite good
The exhaust fan we use is from Lanlian, and the main fan is from Shengyu; they perform fairly well
Is the quality of the smoke extractors produced by Chenghangfa satisfactory? How many years have you been using them? Have any error codes appeared over time? Is there significant vibration during use?
The quality of the flue gas turbines produced by Chenghangfa is quite good, and their efficiency is high as well. The maximum vibration level for our Unit 4 is around 30, while it’s about 45 for Unit 3. In my opinion, the reason lies in the excellent control of flue gas quality in our factory, coupled with the stable quality of these turbines; generally, they can operate without issues for a period of 3 years. Starting from 2013, the rotors of the turbines in both units were replaced, mainly due to operational reasons
Our plant is equipped with a coaxial catalytic unit with an annual capacity of 600,000 tons; the flue gas exhaust system is also from Lanlian, while the main fan is supplied by Shengli Blower. Due to issues with the recovery efficiency of the regenerator cyclone and the three- or four-cyclone systems, there is an excess of catalyst dust in the flue gas. This leads to severe erosion and wear of the rotor blades in the flue gas turbine. Moreover, water in the cooling steam used to cool the rotor disc causes scaling on the blades, resulting in high vibration levels after about half a year of operation; at that point, the turbine must be switched to standby mode. Depending on the degree of blade wear, the rotor either needs to be replaced or cleaned before it can be put back into service. In the next production cycle, I plan to optimize the cooling steam process for the wheel to address the issue of steam containing water. :lol
In China, SHENGU does a good job with centrifuges, while SHANGU is better at axial-flow types
This post was last edited by Refiner on 2016-2-17 08:32. We have the same capacity as you – 1.8 million tons – and we’ve just started operations; there have been many problems with the smoke gas butterfly valves, so we’ve been using a backup unit until now! So much fluff was wasted!
Did the butterfly valve start having problems right away after it was put into use? What’s going on?:lol