A bit frustrated by gas conversion

[Gus Smedstad]

That gas sometimes converts is pretty well known. I don't quite grasp what drives it, since I'm not interested in exploiting it, but anyone who has tapped a cool steam geyser knows it can do odd things, like turn steam into hydrogen or chlorine.

I'm in the early stages of my QOL 3 colony, and I've got a couple of chlorine rooms for sterilization. The Food Poisoning sterilization room works fine, mainly because Dupes never have any reason to enter. The slime storage room not so much. I filled it with chlorine, enough to prevent offgassing of the slime into polluted oxygen. But every time a Dupe deposits more slime, there's an momentary drop in pressure, and the slime starts emitting polluted oxygen. I have a deoderizer in there to turn it into oxygen, and a pump to empty the oxygen out, but still half the chlorine has converted to oxygen, and the chlorine content is steadily dropping.

Chlorine's generally fairly abundant, but given that it's only cycle 110, I haven't explored that far, and having to replenish the chlorine is frustrating. Until (and if)  I find a chlorine geyser, it's a limited resource.

I didn't submerge my slime storage bins because I wanted to surround them with chlorine to kill off slimelung. I'm not sure if submerging the bottom half while surrounding the top half with chlorine will work.

I really wish they'd fix this bug.

EDIT: The problem is my preference for mechanical airlock solutions. I dislike water locks purely for personal reasons, but they don't give you pressure variations when a Dupe enters and exits.

Alternately, a high-pressure vent could keep the pressure up to the point where the drop didn't matter, but I'm still working on building my first oil refinery, and don't have a glossy Drecko farm for plastic either.

[KittenIsAGeek]

My method has been to completely seal the room.  Dupes add slime in a conveyor loader, that dumps it in the room.  Sweeper picks it up and loads it onto another loader that transports it to my shroom farm.  Nice, clean, no gas pressure changes.

[Gus Smedstad]

That sounds like a good solution.

[tzionut]

My solution is to store it under water. No offgas if the water doesn't drop under 1000 kg in the bottom tile row 

Spoiler

 

[mathmanican]

2 hours ago, Gus Smedstad said:

I don't quite grasp what drives it, since I'm not interested in exploiting it,

I'd prefer not to be able to exploit it.  But while it's in the game, I'll exploit it like mad in the hopes to help the devs see exactly why it's happening. Posts like this, where people vent frustration about it, are great.

2 hours ago, Gus Smedstad said:

Alternately, a high-pressure vent could keep the pressure up to the point where the drop didn't matter,

Another option is to build a room that's twice as large as you need, fill it with 2kg chlorine, and then shrink the size. This can net you a 4kg pressurized room (or higher) without having to get plastic.

[Yoma_Nosme]

4 hours ago, Gus Smedstad said:

The problem is my preference for mechanical airlock solutions. I dislike water locks purely for personal reasons, but they don't give you pressure variations when a Dupe enters and exits.

Have you tried a gas lock? Chlorine on one side. A small pit with co2 dupes have to pass thru and oxygen on the other side.

To prevent co2/chlorine leaking I've build a deoxidizer on the oxygen side and automate it to keep o2 pressure constant so the co2 stays wedged in between the two.

Obviously it's not the best solution but I've tried not using waterlocks as well and oh boy, oh boy, one has to get inventive 

But that's the best part...

[Oozinator]

6 hours ago, Gus Smedstad said:

Chlorine's generally fairly abundant, but given that it's only cycle 110, I haven't explored that far, and having to replenish the chlorine is frustrating. Until (and if)  I find a chlorine geyser, it's a limited resource.

EDIT: The problem is my preference for mechanical airlock solutions. I dislike water locks purely for personal reasons, but they don't give you pressure variations when a Dupe enters and exits.

On my actual map, i use first time chlorine geyser, had never a use for it before, but yes matter conversion sucks for me too.
I digged out a whole biome for chlorine and try to prevent any other gas moving in (pushing out other stuff now).
When i try to desinfect slime ( i stopped doing that, because why?), i store them not submerged, but #overpressurized chlorine room.

I use most times two tiles high airlocks (CO²) and they work very well.
When i need to block it total (because one side vacuum), i use some grams liquid, where my mouse is pointed at..
I get not much unwanted matter conversion ongoing, so far i notice it.

[OxCD]

@Gus Smedstad same issue than you. Just a tiny pressure drop and matter conversion turns my chlorine into pO².

Nearly same way to solve than @KittenIsAGeek

Dups uses Scrubber (just for luxury, as the room will do the job anyway. But I've a Chlorine vent), put slimes into the conveyor (door of the main room is locked). Then sweeper loads slime and bleach stone into storage.

I'm also locking seeds in here, because it carries food poisonning. The slime is slowly sent to algae distillers (only use for slime in this save), so have lot more than needed time to purify. Only seeds should be moved manually between set two-ways conveyor system.

Liquid storages are to clean the food poisonning from a pH²O geyser. Another purpose for this locked room.

 

EDIT: I'm just seeing the pH²O bottle in there ahah. No activity those last 200 cycles (Chlorine pressure is at 8kg/tile), so let it locked there ^^

[Gus Smedstad]

@OxCD, that screenshot is helpful too.

I’ve been storing bleach stone in that chlorine room as well, and I just belatedly realized that the 900 kg of bleach stone is far, far more chlorine than I’ve collected with pumps. So actually I’m not short at all.

If you’re thinking “well DUH,” in my defense I really didn’t do anything useful with my chlorine in my last colony. I’m used to thinking of bleach stone as an annoyance, not a resource.

The practical drawback is that bleach stone doesn’t offgas until pressure is low enough for the slime to offgas as well. I’ll need to address that.

[beowulf2010]

24 minutes ago, Gus Smedstad said:

The practical drawback is that bleach stone doesn’t offgas until pressure is low enough for the slime to offgas as well. I’ll need to address that.

Added to this is how slow bleach stone offgasses. The best way I've found is to have a separate room for the bleach stone and pump the chlorine to a storage room that then sends it where you want. 3 extra pumps kinda sucks (you only need one in the bleach stone room) but that's way better than the 10+ cycles I've waited for larger chlorine rooms to come up to pressure... 

[Gus Smedstad]

A separate bleach stone -> chlorine room was what I was thinking as well. Extra pumps really aren't that big a deal as long as they aren't running continuously. Even in the early game the 50kg metal cost isn't high. It's the electricity cost that's a crisis for me right now.

Eventually power is abundant enough that running the pumps wouldn't be a big deal either, but right now it is.

[beowulf2010]

1 hour ago, Gus Smedstad said:

A separate bleach stone -> chlorine room was what I was thinking as well. Extra pumps really aren't that big a deal as long as they aren't running continuously. Even in the early game the 50kg metal cost isn't high. It's the electricity cost that's a crisis for me right now.

Eventually power is abundant enough that running the pumps wouldn't be a big deal either, but right now it is.

Yeah. This is the primary reason I look for maps with a chlorine geyser. I hate having to setup the bleach stone offgas room. Sure, it's not hard and is fairly cheap at 240W a few times a cycle, but it is so slow... 

[FiannaTiger]

I have a chlorine room in my base and it is done with a co2 lock. It’s been 523 cycles and holding. I put it right under my dinning hall to store food in and for slime. I do know that a half water and have chlorine container will kill off the germs off as I did some testing with 500kg of water in the bottom tile and one tile of chlorine with 50g of chlorine and the slime lung numbers plummeted. 

Also I use the gas canister emptier and a bottle emptier to over pressure my chlorine room as I almost always get liquid chlorine from a few wheezworts in a cold biome or I just pump a bit into canisters and empty a few to up the pressure. Easy to do when you hit 2k just have a plumber empty the chlorine in the pipe and dump those canisters in.