Removing CO2 from rockets?

[ChrisPBacon000]

Since there appears to be no way to purge the gas from the interior of a rocket command module, what strategies could be used to clear CO2 from the Rockets right now?

I mostly just want to avoid deconstructing the whole module and rebuilding... I don't want to lose all the oxygen and other infrastructure I've built inside the module.

Pumping the gas into a canister filler seems ok but you need a lot of CO2 to do this.  Ideally I would fill one canister, have a dupe take that canister out of the capsule, and then deconstruct the gas pump etc.  But the canister can only be filled if there are 25 kg of CO2 in storage...

Carbon skimming could work... But supplying water in such a tight space plus removing polluted water is tricky. 

I'm trying to avoid things that seem to blatantly ignore logic, like supercooling the capsule and freezing the CO2.  It's just a bit strange there is no built in CO2 removal... Like the capsule could have a vent port that would allow you to pump gasses out. Or maybe a place to load "Lime" as a chemical scrubber?  Give us another use for lime, and mimic real technology?

Any obvious solutions I've missed?

[Yunru]

One I wish existed, would be to pump it straight to a CO2 engine.

[sakura_sk]

11 minutes ago, ChrisPBacon000 said:

Any obvious solutions I've missed?

Not a solution... more of a "work around". You build pipes zigzagging the command capsule with a bridge at the end (and a way of filtering CO2 at the beginning). When they fill up, you use a plumber  dupe to empty the last segment before the bridge (Francis John's method)

I just used an oxyfern to not let it build up (spacefarer module only). For solo spacefarer nosecone I prefer an algae terrarium to eat some CO2 (although there will be p.oxygen in the mix at some point and overpressure..)

[suicide commando]

Here's 2 more options you can use:
1) Algae Terrariums. These eat CO2 if it's around. downsides here are that the polluted water they produce can offgas. And they also produce O2 but don't stop when the pressure gets high, so you can get popped eardrums.

2) Oxiferns eat CO2. Downside here is that they need a planter box or farm/hydro tile. Which means the bottom row of tiles are out of range for them to remove CO2. They also need water, so you either have to supply this with dupe labor, or set up irrigation.

 

[Yunru]

There's also door crushers, but they're bulky, especially if you don't want it to risk eating the O2 too (3x4, but one of that 4 can be the module's outer wall, and 1 of the 3 the module's floor).

[ghkbrew]

Things that off gas will delete single tiles of CO2 on top of them.  I use a rail of oxylite along the bottom of the capsule, but morbs and pwater bottles also work.

[ChrisPBacon000]

2 hours ago, sakura_sk said:

Not a solution... more of a "work around". You build pipes zigzagging the command capsule with a bridge at the end (and a way of filtering CO2 at the beginning). When they fill up, you use a plumber  dupe to empty the last segment before the bridge (Francis John's method)

I hadn't considered the fact plumbers can remove gas in bottled form from pipes!  This seems a great solution since I anticipate long journeys for my pilots and I usually need all the space I can get for critical structures.

I think having to occasionally build a pump, filter, battery and a generator should be manageable. CO2 should only be an issue once the capsule fills quite full. Beds are up at the top, and most other tasks can be done while holding breath. 

[greywizard]

I use a rail loop to delete CO2 with oxylite. 

[catrue]

Yesterday this question also arose, at the beginning I just wanted to destroy the wall and release all the gas. But then I found a unique and ingenious solution to simply plant a plant in a rocket that consumes carbon dioxide and gives off oxygen. Need a little water when the rocket lands