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UOP batch boost mode

2019-05-04View Original

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In the UOP continuous reforming unit, there is a batch lifting mode for the L valve group located between the two lift reverse bottom vessels. What is the purpose of this mode? When can it be switched to continuous lifting mode?
Reply #22019-05-05
The main function of an L-type valve is to control the flow rate of solid particles. This is a very old structure; I personally don’t like it as it represents outdated technology. But it’s relatively simple; the term \"batch improvement mode\" is clearly a descriptive phrase meant to make things easier to understand, or it might simply be a translation. The purpose of this mode is to increase the inflation rate inside the L-shaped valve, thereby improving the passage rate of solid particles. Simply put, it’s like turning up the faucet – this is what’s known as batch boost mode. The inflation rate isn’t the higher, the better; rather, there is a certain range. The continuous lifting mode means that particles will accumulate above the L-shaped valve, creating a pressure balance. You can think of it as insufficient water pressure at the faucet; when the flow is turned up high, the water comes in bursts, while turning it down a bit allows the water to flow continuously. This is mainly related to stress; in other words, it’s connected to your production activities. Specifically, during production, it is related to the pressure difference of the particles inside the riser; this can be understood as the weight of the solid particles within the riser. It’s very simple to convert these two. If there is too much material in the rising pipe, it switches to continuous mode; if the rising pipe is empty, it switches to batch lifting mode. Of course, there are many other situations as well. It is related to your actual production. I’m not yet very familiar with the situation on site in China; if needed, we can communicate via voice call – rest assured, it’s free.

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