{"id":22,"date":"2026-06-02T10:43:01","date_gmt":"2026-06-02T10:43:01","guid":{"rendered":"https:\/\/molecularsieve.com\/?sbc_product=molecular-sieve-3a"},"modified":"2026-06-02T10:43:01","modified_gmt":"2026-06-02T10:43:01","slug":"molecular-sieve-3a","status":"publish","type":"sbc_product","link":"https:\/\/molecularsieve.com\/?sbc_product=molecular-sieve-3a","title":{"rendered":"Molecular Sieve 3A"},"content":{"rendered":"<h2 class=\"wp-block-heading\">Product Overview<\/h2><p class=\"wp-block-paragraph\">Molecular Sieve 3A is a crystalline aluminosilicate zeolite whose 3 \u00c5 effective pore is created by potassium-ion exchange of the parent 4A structure. The reduced pore preferentially admits water (kinetic diameter 2.65 \u00c5) while excluding most hydrocarbon species, making it the selectivity-first desiccant for gas and liquid drying.<\/p><p class=\"wp-block-paragraph\">Each batch is manufactured at Medaad and tested against a standard certificate of analysis covering water adsorption capacity, bulk density, crush strength, and loss on ignition.<\/p><h2 class=\"wp-block-heading\">Key Performance Characteristics<\/h2><p class=\"wp-block-paragraph\">The \u2265 22 % water adsorption capacity is maintained across the service life when operated within design conditions. Low equilibrium loading of light hydrocarbons directly reduces co-adsorption losses in natural-gas dehydration trains, and the crystalline structure tolerates a large number of regeneration cycles without significant capacity loss.<\/p><h2 class=\"wp-block-heading\">Typical Applications<\/h2><p class=\"wp-block-paragraph\">Deep dehydration of natural and associated gas to pipeline specification, ethanol dehydration from ~92 % to > 99.5 % absolute, drying of LPG and refrigerants, and instrument\/process air drying in heatless and heated regeneration dryers.<\/p><h2 class=\"wp-block-heading\">FAQ<\/h2><h3 class=\"wp-block-heading\">What is the difference between 3A and 4A?<\/h3><p class=\"wp-block-paragraph\">3A has a 3 \u00c5 pore and preferentially adsorbs water while excluding most hydrocarbons; 4A has a 4 \u00c5 pore and additionally adsorbs ammonia, H\u2082S, and small hydrocarbons. For natural gas and ethanol, 3A avoids co-adsorption of valuable feed components.<\/p><h3 class=\"wp-block-heading\">What outlet dew point can it achieve?<\/h3><p class=\"wp-block-paragraph\">In a well-designed TSA unit with clean inlet gas and adequate bed depth, 3A consistently achieves outlet water dew points below \u221270 \u00b0C at pipeline conditions, meeting GPA 2140 and most pipeline operator specifications.<\/p><h3 class=\"wp-block-heading\">How long does it last in service?<\/h3><p class=\"wp-block-paragraph\">Under design conditions \u2014 no liquid carryover, operation within temperature limits, correct regeneration \u2014 a service life of 3\u20135 years is typical for industrial gas dehydration.<\/p>","protected":false},"excerpt":{"rendered":"<p>Potassium-form zeolite with a 3 \u00c5 effective pore \u2014 the standard desiccant for natural gas and ethanol dehydration where hydrocarbon co-adsorption must be avoided.<\/p>\n","protected":false},"featured_media":23,"template":"","meta":{"footnotes":""},"sbc_product_family":[2],"sbc_application":[13],"sbc_industry":[24,18,19],"sbc_engagement_model":[32],"sbc_region_market":[],"class_list":["post-22","sbc_product","type-sbc_product","status-publish","has-post-thumbnail","hentry","sbc_product_family-molecular-sieves","sbc_application-gas-treatment-drying","sbc_industry-industrial-gas-air-separation","sbc_industry-oil-gas","sbc_industry-petrochemicals-refining","sbc_engagement_model-media-supply"],"_links":{"self":[{"href":"https:\/\/molecularsieve.com\/index.php?rest_route=\/wp\/v2\/sbc_product\/22","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/molecularsieve.com\/index.php?rest_route=\/wp\/v2\/sbc_product"}],"about":[{"href":"https:\/\/molecularsieve.com\/index.php?rest_route=\/wp\/v2\/types\/sbc_product"}],"version-history":[{"count":0,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=\/wp\/v2\/sbc_product\/22\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=\/wp\/v2\/media\/23"}],"wp:attachment":[{"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=22"}],"wp:term":[{"taxonomy":"sbc_product_family","embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fsbc_product_family&post=22"},{"taxonomy":"sbc_application","embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fsbc_application&post=22"},{"taxonomy":"sbc_industry","embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fsbc_industry&post=22"},{"taxonomy":"sbc_engagement_model","embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fsbc_engagement_model&post=22"},{"taxonomy":"sbc_region_market","embeddable":true,"href":"https:\/\/molecularsieve.com\/index.php?rest_route=%2Fwp%2Fv2%2Fsbc_region_market&post=22"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}