Silk City Distillers

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Everything posted by Silk City Distillers

  1. Maybe it's silly to state this, but wash/beer is not a Class IC flammable liquid. I'm saying this, because you mentioned 350-550 gallon tanks, which sound more like fermenters to me. If you are talking distillate, it's easy to stay under the 60g MAQ if you are running single pass on anything 500 gallons or under (assuming sprinklers).
  2. Around me, roughly: Natural Gas - $12.00 for 1 million btu Fuel Oil - $20.00 for 1 million btu Electric - $60.00 for 1 million btu
  3. I fire with heating oil.
  4. This is not the case, a boiler is a boiler.
  5. I run a 250g still off a 16hp boiler, so that's roughly 150kw in electrical equivalent. I can heat up in about an hour if it's warmer temps, the equipment is still hot, etc. Or about an hour and a half from a cold start in a winter. The efficiency on the electric boiler should be somewhat higher, but I would imagine you are still looking at 3 hour heat up times with only 50kw.
  6. An electric fired steam boiler like a Sussman or Reimers will probably be as costly to install and plumb as a gas fired boiler. In the case you might find it to be somewhat cheaper on the install, it's going to be a wash when you factor the increased operating costs. Itll be similarly sized when installed, and the same rules apply to steam boilers regardless of how they fire.
  7. I was under the impression that continuous fermentation was more prone to bacterial issues than batch fermentation. So really, continuous fermentation is not a solution to infection at all, it represents an even bigger problem - the answer to which is usually dosing antibiotics, which may pose ideological issues.
  8. What do you mean by just in time mash injection?
  9. Biggest issue that we have run into trying to operate a distillery and have other jobs is not production, it's sales. Beverage managers, bartenders, owners, buyers - all these folks can or will only meet at 2pm during the week. Too busy in the mornings - prep for the day. Too busy at noon, lunch rush. At 4? No way dinner rush is starting. Friday? No good, too busy. Weekends? Not possible. Easy to produce at 6pm and on the weekends, not so easy to sell.
  10. Realistically though, where does one use such a unit with regularity that you don't also have to perform the exact same gauge in a TTB approved manner? Proofing down by trial and error (the intermediate steps)? Periodic testing of barrel proofs for informational purposes? Intermediate steps in processing liqueurs?
  11. We use International Molasses - we pick up at their warehouse in Garfield.
  12. This one:
  13. Isn't Anton Parr now making a small low accuracy unit for pretty reasonable cost?
  14. Patenting lactic souring? Cmon.
  15. We use a single 3/4"TLA Eductor in a 600 gallon tank ( for Direct Steam Injection. It's pretty loud, but the heat up time is great. Costs should go DOWN with DSI - significantly less effort than a jacket - unless the heating jacket just gets used for cooling and there isn't any less labor/material. We did it because we converted a jacketed/insulated dairy tank into a mash tun - and we wanted to use the single jacket for cooling. Both our still and mash tuns are insulated - absolutely a benefit to insulation, and not just safety, but efficiency and reduced heat up time. The agitator design will need to be specific to the tank geometry and density - motor size, gearing, blade size, shaft length. We have a geared down 1hp agitator (90rpm) on a 600g tank, and I'd like a bigger/faster agitator. Your chiller sizing will have more to say about cool down times than water vs glycol - if that is what you are asking. Glycol or not should be irrelevant to the jacket design.
  16. Aaron and team. How many agents would call you back to tell you that you need to pay a lower premium?
  17. Stop by I'm around this afternoon.
  18. Just to be clear, in my opinion, PTFE/Teflon is superior to platinum cured silicone. If the goal is cost-no-object dedication to purity, fluoropolymers like PTFE, FEP, and PFA are the plastics of choice. You see this when looking at the pumps used in high purity operations, for example, something like the Yamada High Purity pumps (DP-20F) - which has all wetted surfaces, gaskets, and check valve balls manufactured out of PTFE. Same for the others like St. Gobain, White Knight, etc etc, very common in the biomedical, pharma, semiconductor, etc. etc. Generally in these kinds of ultra high purity processes, even metals like stainless begin to be questioned.
  19. Alcohol in a tote? You are going to have at least 3, if not maybe 4 plastics involved. HDPE - Tote Bottle Polypropylene - Valves, Cap Viton/PTFE/EPDM - for the cap gasket and in the valve seals
  20. For sure, I would imagine the bulk of the nutrients, vitamins, minerals that result from the yeast biomass exist in the liquid portion. We recycle a portion of the liquid stillage as backset into the next mash.
  21. We separate grain mash post distillation with about a $100-200 investment in hardware. This, obviously, does not include costs like pumps and hoses, which it is assumed you already have. For example, 1000 pounds total grain volume in ~530g total volume reduced to roughly ~160-180g total volume of reasonably dry grain (or wet grain, however you want to look at it). It is a very hands-on process, but we can process ~265g of stillage in about 30 minutes. It is not a perfect process and some small solids do not get caught. Likewise, while the spent grain appears reasonably dry, you can extract liquid if you squeeze it with your hand. That said, it reduces the bulk tremendously, and makes it significantly easier to transport.
  22. Looks like a nightmare to clean and keep sanitary, especially if you are trying to separate pre-fermentation. Cleary, there has to be a way to do it, otherwise it wouldn't at all work in a winery. I would imagine a belt press that can be CIP'ed is going to cost a pretty penny though.
  23. Yeah, that's the problem with those small pore filters, if you don't pre-filter, they will clog (absolute vs depth filtration). You can very quickly ruin a filter cartridge this way. Use an inline filter when you are dumping or pumping from barrels, you don't need to have an extremely fine pore size. I pre-filter going into the bottling tank. Depending on the filter cartridge, you may be able to back flow pure water to help flush some particles and extending the filter cartridge life. I do this by hooking the filter housing outlet up to my RO water system and just letting it flush (in reverse) for an hour or two. Very surprised that you would find char in the bottles, either your filters weren't installed properly (probably not likely), or they were damaged by the back-pressure/vacuum - they could be trash at this point. You can try the back-flush for a longer period of time, if your housing permits it, but you might want to buy a new set and look into pre-filtration (10-20 micron).
  24. Our Pressuretrol bands are 9psi on the cut-in and 11psi on the cut-out.
  25. Typically a globe valve that allows you to adjust steam flow, just like you would with electric. Your low pressure boiler will have an upper and lower pressure controls that the burner will cycle around.