{"id":529,"date":"2023-01-10T23:42:07","date_gmt":"2023-01-10T23:42:07","guid":{"rendered":"https:\/\/graywolfslair.com\/?p=529"},"modified":"2023-05-15T22:43:10","modified_gmt":"2023-05-15T22:43:10","slug":"15-6-asme-pressure-pots","status":"publish","type":"post","link":"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-6-asme-pressure-pots\/","title":{"rendered":"15.6 ASME Pressure pots"},"content":{"rendered":"\n

Some of the professional engineering services certifying cannabis extraction equipment require that the collection pot have a certification placard attached and we’ve approached that a couple different ways.  One is to use a Binks 2.5 gallon stainless paint pot, which comes with said certs attached, and another was to design one and have it built by a certified ASME Section VIII tank manufacturer. <\/p>\n\n\n\n

Here is a Binks in a certified Mk IVC system:<\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

Binks Pressure Pot<\/strong><\/p>\n\n\n\n

As noted, another way is to design one and have it built and certified by a certified ASME pressure vessel manufacturer, which is what we did for the WolfWurx Mk IVC\/VC.<\/p>\n\n\n\n

Here is a conceptual for a 12″ pot, that an ASME manufacturer such as Marks Brothers Industries will be more than happy to flesh out with their own prints and engineering calculations:  The clamp is an ASME three bolt sanitary clamp, available from LJ Star.<\/p>\n\n\n\n

http:\/\/marks-brothers.com\/industries\/<\/a><\/p>\n\n\n\n

\"\"\/<\/figure>\n\n\n\n

Conceptual<\/strong><\/p>\n\n\n\n

Collection  Vessel design considerations:<\/strong><\/p>\n\n\n\n

The major pinch point in LPG extraction is surface area of the recovery vessel, because more is better from a recovery speed standpoint, but alas pressure ratings for SSH and ASME sanitary clamps limit us to about 6\u201d to 8\u201d with those style closures.   <\/p>\n\n\n\n

ASME Section VIII Pressure Vessel codes, consider anything 6\u201d diameter and below and operating above one atmosphere pressure, as Pressure Piping, and anything above 6\u201d as a pressure vessel. <\/p>\n\n\n\n

Pressure piping for LPG must meet 350 psi, and pressure vessels must meet 3X the maximum pressure the vessel might see in operation, including a cooling failure. <\/p>\n\n\n\n

In the case of systems using sanitary components, the clamps are the limiting factor.<\/p>\n\n\n\n

As you can see by the following chart, propane pressures go up rapidly with temperature, as do butane\/propane mixes to a lesser degree.  Our 100 year high locally is 107F, and 100% propane reaches 110 psi at about 70F, and is up to 204 psi by 110F.<\/p>\n\n\n\n

3X 204 psi is 612 psi, which you can see from the clamp rating chart that pressure would limit you to 4\u201d using an ASME clamp, 6\u201d using the SSH clamp.<\/p>\n\n\n\n

You can also see that 6\u201d actually falls in the 6\u201d-and-under ASME LPG pressure piping which only has to meet 350 psi, or only 1.7X maximum operating pressure, and it should be noted that safety factor on an ASME clamp is 5X.<\/p>\n\n\n\n

Joint failure is typically not clamp failure, but its failure to prevent leaks and lid design has some effects on that issue.<\/p>\n\n\n\n

A round flat lid under internal pressure deflects and becomes hemispherical, which makes it smaller in diameter and using the outer lip as a pivot point, lift up off the gasket.  An ASME dished head on the other hand, his already bowed, and the bending moment on just the outer ring is significantly less.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

n-Butane and n-Propane mixes pressure at temperature<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Sanitary Clamp Pressure Ratings<\/strong><\/p>\n\n\n\n

Sadly, while a 6\u201d SSH clamp meets the pressure requirements, 6\u201d diameter limits you to 28.27 square inches surface area for the evaporating pool during recovery.  While a 12\u201d diameter has 113 square inches surface area, or four times as much, but the ASME clamp is limited to 102 psi.<\/p>\n\n\n\n

12\u201d is a pressure vessel, so must meet 3X, so 102 psi divided by 3 = 34 psi allowable working pressure, which would limit to use with 100% n-Butane.<\/p>\n\n\n\n

One solution is to have the hemispherical lid welded to the tank wrapper, and 6\u201d ferrule welded in its top for a clean out port.  That allows you to go to tank diameters larger than 12\u201d, yet still use a clamp rated for the pressure.  Not as easy to clean, but workable with products requiring minimal   <\/p>\n\n\n\n

You can also have a hemispherical bottom with a drain port in its center, so that you can \u201cpour-early\u201d, while it still flows easily.   It can include a small hemispherical bottom as a shatter platter in a larger hemispherical, bottom.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Large jacketed tank with 6″ Sanitary Ports and Shatter Platter with bottom tap<\/strong><\/p>\n\n\n\n

An easy to increase surface area is as a direct function of length, without increasing diameter, but the surface area of the evaporation pool changes depending on the level of fluid in the cylinders.  It has maximum surface area half full, which reduces rapidly as the fluid level falls, due to the curved bottom.<\/p>\n\n\n\n

Boiling the the LPG under vacuum creates significant refrigeration, which must be offset by the addition of heat, or the process temperature will plummet until the process is at a standstill.  They also do not lend themselves as easily to a hemispherical shatter platter to minimize cleanup and support early pour and sauce techniques.<\/p>\n\n\n\n

Perhaps two cylinder halves joined at 5 degree angle, with a sump in the middle, to which the shatter platter attaches.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Possible configuration<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Some of the professional engineering services certifying cannabis extraction equipment require that the collection pot have a certification placard attached and we’ve approached that a […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[50],"tags":[],"class_list":["post-529","post","type-post","status-publish","format-standard","hentry","category-15-diy-equipment"],"yoast_head":"\n15.6 ASME Pressure pots - GrayWolf's Lair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-6-asme-pressure-pots\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"15.6 ASME Pressure pots - GrayWolf's Lair\" \/>\n<meta property=\"og:description\" content=\"Some of the professional engineering services certifying cannabis extraction equipment require that the collection pot have a certification placard attached and we’ve approached that a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-6-asme-pressure-pots\/\" \/>\n<meta property=\"og:site_name\" content=\"GrayWolf's Lair\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/james.ellis.9081\" \/>\n<meta property=\"article:published_time\" content=\"2023-01-10T23:42:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-15T22:43:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/graywolfslair.com\/images\/Binks.jpg\" \/>\n<meta name=\"author\" content=\"GrayWolf\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"GrayWolf\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/15-diy-equipment\\\/15-6-asme-pressure-pots\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/15-diy-equipment\\\/15-6-asme-pressure-pots\\\/\"},\"author\":{\"name\":\"GrayWolf\",\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#\\\/schema\\\/person\\\/40d6da885f58d0e767e114277e1c7d1c\"},\"headline\":\"15.6 ASME Pressure pots\",\"datePublished\":\"2023-01-10T23:42:07+00:00\",\"dateModified\":\"2023-05-15T22:43:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/15-diy-equipment\\\/15-6-asme-pressure-pots\\\/\"},\"wordCount\":793,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/graywolfslair.com\\\/index.php\\\/15-diy-equipment\\\/15-6-asme-pressure-pots\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/graywolfslair.com\\\/images\\\/Binks.jpg\",\"articleSection\":[\"15. 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I didn't invent the concept, but instead got my inspiration 07-26-2009,\u2026","rel":"","context":"In "15. DIY Equipment"","block_context":{"text":"15. 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Prior to that time I had the central Mk III, IV, and V Terpenators certified to ASME using R. Chilton,\u2026","rel":"","context":"In "13. Certification"","block_context":{"text":"13. Certification","link":"https:\/\/graywolfslair.com\/index.php\/category\/13-certification\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":138,"url":"https:\/\/graywolfslair.com\/index.php\/4-authors-columns\/4-1-graywolf\/4-1-4-process-evolution\/","url_meta":{"origin":529,"position":2},"title":"4.1.4 Process Evolution","author":"GrayWolf","date":"January 9, 2023","format":false,"excerpt":"A discussion of equipment design reminds us that all things are fixed in time, which is in motion, so yesterday\u2019s or even today\u2019s most brilliant brain farts are tomorrows museum pieces.\u00a0 As the song goes, each new beginning is an old new beginnings end. In such a discussion, there is\u00a0also\u2026","rel":"","context":"In "4. Authors Columns"","block_context":{"text":"4. Authors Columns","link":"https:\/\/graywolfslair.com\/index.php\/category\/4-authors-columns\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":517,"url":"https:\/\/graywolfslair.com\/index.php\/15-diy-equipment\/15-2-lil-terp\/","url_meta":{"origin":529,"position":3},"title":"15.2 Lil Terp","author":"GrayWolf","date":"January 10, 2023","format":false,"excerpt":"During the time frame that I introduced the Mk III, I introduced the Lil Terp Passive extractor,\u00a0which was based on the Mk III design, but was actually not my first conceptual for passive extraction and collection.\u00a0 The first was based on another of FOAF's post where he did a passive\u2026","rel":"","context":"In "15. DIY Equipment"","block_context":{"text":"15. 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