I have a few questions regarding sulfur and stripping
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1. Currently, the sulfur unit is operating under overload conditions. Could the teachers please consider injecting an appropriate amount of alkali continuously into the sulfur quench tower to maintain a pH level of 9-11, in order to reduce the load on the absorption tower? Is this approach feasible? Addition: Quench water enters the acidic water stripping unit. 2. Why is a siphon bend installed between the two raw water tanks? 3. What temperature should be maintained for the low-pressure, full-blowout gas containing amino acids in a single tower to prevent crystallization and blockages? Help, thank you! ! ! :handshake
The slight bends between the raw material tanks are designed to keep the oil and impurities in the water within one tank, preventing them from reaching the next tank and entering the tower. The temperature for aminoacid-containing gases should be above 85 degrees, right?
First question: The annual load on my sulfur treatment system is not very high; I adjust the pH value by injecting condensed water, and there is also a line for injecting alkali, but it has not been used yet. However, I think that maintaining a too high pH value by adding alkali can reduce the load on the exhaust gas absorption tower, but it also results in an excessive amount of sodium sulfide salts entering the stripping unit, which may degrade the quality of the purified water. Second question: The pipe between the two tanks should be called an inverted U-tube. It utilizes the principle of a communicating vessel to keep the level in tank A equal to or above the highest point of the inverted U-tube, thereby ensuring a constant liquid level in tank A and thus maintaining the level in the skimming tank. Siphoning is harmful to the tank levels; if siphoning occurs, the liquid level in tank A will drop sharply and flow over into tank B. To prevent siphoning, the pipeline at the top of the inverted U-shaped tube must be opened to allow pressure release, thereby preventing siphoning. The siphon prevention pipe must remain unobstructed to avoid the occurrence of siphoning. Third question: The empirical temperature should be above 80°C, with 85°C being the ideal value.
First question: If the pH control for adding alkali to the exhaust gas absorption tower is set too high, an excessive amount of sodium sulfide salts will enter the stripping unit, which will degrade the quality of the purified water, primarily due to sulfides and ammonia nitrogen. Second question: Control the liquid level in Tank A of acidic water to facilitate sedimentation for oil removal and skimming. Third question: Keep it above 85°C.
What is the principle behind the action of a few-degree bend?
This post was last edited by forest RCBY on 2021-5-7 07:09. 1. Adding alkali is useful for sulfur treatment units; there’s no problem with that. But it doesn’t work for acidic water stripping, as this will result in the purified water not meeting the required standards. 2. The function of the siphon bend is to ensure stability and homogeneity; more detailed information can be found in the article titled “I Have a Connection with U-shaped Bends”. 3. Personally, I recommend that the angle at the top of the tower be over 85 degrees