Gas for CO incinerator in catalytic units
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Is your unit equipped with a CO incinerator? My unit does not feature full regeneration; it has an incinerator. What is the fuel used for the CO incinerator? Here, the fuel comes from the company’s high-pressure gas pipeline network. In recent days, Shandong province has experienced the lowest temperatures in 30 years, with temperatures dropping to minus 18 degrees. My unit’s high-pressure gas pipeline network lacks heat tracing, which has led to freezing issues. I would like to discuss the following questions: 1. Does the unit operate in full regeneration mode or incomplete regeneration mode? Is there a CO incinerator installed? 2. What is the fuel used for the CO incinerator? 3. Does the high-pressure gas pipeline have heat tracing?
1. Here, we use complete regeneration (that is, single-stage regeneration); there is no CO combustion furnace installed (I have seen systems with two-stage regeneration). 2. The fuel for the CO combustion furnace is high-pressure gas. 3. In our case, insulation and hot water heating are used for the high-pressure gas. Your process should be as follows: first, conventional regeneration is used to remove CO, but an external heat exchanger is still installed; second, complete regeneration is employed. The primary flue gas and the secondary flue gas are treated separately; after the primary flue gas has done work through a flue gas turbine, it merges with the secondary high-temperature oxygen-containing flue gas to enter the CO combustion furnace, where CO is completely burned using less supplementary fuel
We are fully regenerative, with no CO burners. Neither the high-wattage nor the low-wattage units have heating, and as a result, the high-wattage unit froze yesterday! It turned out that the dry gas line inside the unit didn’t have heating, so it would freeze frequently in winter; heating was added during the renovation, and now it’s much hassle-free! Based on the actual situation, it must be added. Otherwise, normal production will be affected, and our brothers will suffer from the cold!
1. We have a small device that features two-stage regeneration. There is a C0 combustion furnace. 2. The fuel for the C0 combustion furnace is high-pressure gas. 3. The high-pressure gas line does not have heat tracing, but it is equipped with a gas liquid separator tank; condensate is drained regularly on a shift basis, and freezing blockages have never occurred. Of course, this is related to the ambient temperature; here in winter it never drops below -5°C.
Here, we’ve had no problems even at minus 10 degrees; this year, it froze at minus 18 degrees. It’s necessary to install heating elements during maintenance
This is complete regeneration; incomplete regeneration means burning the flue gas again in a combustion furnace, right? Solve. The overheating furnace we use here is equipped with high-wattage units; however, these units don’t have any heating system, so they froze a few days ago at minus 15 degrees. We then added insulation, and we also drain the liquid once per shift
High-pressure gas contains some condensed oil and moisture, and freezing can occur when problems arise; it is best to install heating lines, as pipes with such heating lines avoid freezing issues altogether.
Last night the temperature dropped to minus 8 degrees. This morning, when I turned on the steam and water valves at the service station, there was nothing – everything was frozen solid. Minus 8 degrees is basically a new record low. :lol
Fuel gas systems in the north are equipped with heat tracing and vaporizers; in case there isn’t enough gas, liquefied gas must be added as a fuel source, which is why heat tracing is very important
Complete regeneration does not require a furnace; insulation is preferred
The dry gas line should be insulated; the fuel is carbon monoxide and gas, and complete regeneration does not require a furnace