We have a recurring situation in our Selenium roaster, we feed SO2 to reduce selenium. The SO2 that we're using is a liquid cylinder SO2. We use a steam vaporizer to vaporize liquid SO2. Now the problem is that SO2 line always clogging. What could have cause this?
What will be the ideal vent of a nitric acid tank, the material of the tank is stainless steel and the nitric acid concentration is 70% by weight.
Are flame arrestor applicable in this matter?
In choosing a pump, what will be the safety factor for the head and flowrate that will be multiplied to your theoretical head and flowrate so you can meet your demand and anticipate the decline of efficiency over time of the pump for at least 10 years?
For our practice, an additional of 10% of...
Are the pressure rating of control valves in a system additive?
Like in a plant, I have 5 control valves at 2 bars minimum operating pressure, at most three valves will be working together. Is it safe to say that the minimum consumption of instrument air will be at 6 bars?
A main steam line is operating at most 7 bars, and one of the end user only uses 2 bars. From the main steam line of 200mm there is a pressure relief valve to make the steam pressure reduced to 2 bars before entering to a 100mm steam line.
Now my question is that, will the mass and rating of...
An oxygen plant is supplying 1200 Nm3/h of nitrogen at 7 bars for miscellaneous gas as by-product. For the end users, they require nitrogen at 4 bars.
Now the consumption of nitrogen is already at 1100 Nm3/h but at 4 bars. If I convert the end user consumption at 7 bars, I will get 733.33 Nm3/h...
How do you estimate specific heat of solution of a copper sulphate solution?
The copper sulphate solution is compose of sulfuric acid, copper sulphate and water and other trace materials.
What kind of material is CrFC25 on JIS standard?
In the detailed drawings of a nozzle sleeve it says that its material is CrFC25.
The service fluid is for concentrated acid (sulfuric acid 93%-95% by wt.) What kind of material is CrFC25 or any equivalent material for nozzle sleeve.
What will be the best material to be used in nozzles if our pump tank is made of carbon steel. Our service fluid is sulfuric acid.
I'm worried about the galvanic corrosion that will happen if I will use dissimilar metals.
Any thoughts of this, or any recommended material for the nozzles?
I have a dry air at 3040 Nm3/h 30 deg C and 5 bars (abs), now we want to make it to 97%N2 by adding dry nitrogen gas at the same gas parameters. We need to decrease the O2 level of the fluidizing unit in order to decrease the chance of copper concentrate sintering after drying it. Now, how much...
Good Day,
We have a project to replace the Drying Pump Tank of our Sulfuric Acid Plant. The management wants us to have an option analysis on the materials that will be used. The Drying Tower Pump Tank will operate at -2 kPa at 80 deg C and the service fluid is at 95-97% H2SO4.
The existing...
I have a SUS 316L plate which is a tank cover. In the design the material of the braces is SUS 316L and the problem is that the only available is SUS 304.
The tank is used as a leaching tanks. However the braces will not contact the liquid inside the tank. Is it okay to use 304 instead of 316L...
Is it okay to attach Magnolia Bronze on a carbon steel? Will it not be prone to galvanic corrosion? Please see attached image for your reference.
The material will not be submerge in water, but the surrounding temperature will be at 50-55 deg C.
Thanks...
I have a project regarding nitric acid storage. Attached to this thread is the existing P&ID of our nitric acid storage. We planned to add a new storage tank which is bigger than the existing. Is it okay that we eliminate the intermediate tank?
And is it better to have the storage tank first...
Are all materials used in acid proofing in bunds from sulfuric acid will be applicable in nitric acid? The materials used in acid proofing in bunds against sulfuric acid are ASPLIT PHENOLIC MORTAR ACID TILES, next with TUFCHEM II MEMBRANE, next with PENNTROWEL EPOXY PRIMER, then the concrete...
I want to modify a design on our existing gravity oil water separator so that it can cater 20 m3/h of oily wastewater from a wash bay. The highest oil concentration that was experience was 300 ppm. We have an existing oil water separator that has a capacity of approximately 2.4 m3 but still...
I have two big tanks of NaOH and H2SO4 for deminiralization of water for boiler purposes. Now the management wants to transfer the other tank to another place nearby. I want to propose that there will be no relocation of the tanks but I will create a partition. The two tanks(cylindrical) are in...
