This industrial case study documents an existing line retrofit delivered to a post-consumer plastic recycling facility processing 1,200 kg\/h of post-consumer high-density polyethylene (r-HDPE) blow-molded bottle flakes (milk jugs, detergent bottles, and shampoo containers). Prior to this retrofit, severe volatile organic compound (VOC) emissions, oily aerosol vapors, and pungent degraded surfactant odors from extruder vacuum vents and the water-ring pelletizing shroud created unbearable workshop working conditions and exceeded local municipal environmental air quality compliance thresholds.<\/p>\n
To eliminate factory emissions, protect worker health, and produce premium low-odor r-HDPE pellets suitable for PCR circular packaging, our engineering team delivered and integrated a comprehensive, multi-stage industrial emission abatement and VOC deodorization system. The installation features high-efficiency negative-pressure capture hoods at the dual extruder degassing vents and water ring shroud, a stainless-steel mechanical oil mist coalescer, an electrostatic precipitator (ESP), a deep-bed activated carbon adsorption vessel, and an induced-draft centrifugal fan routed to a 15-meter exhaust stack. Post-commissioning emission monitoring confirmed a non-methane hydrocarbon (NMHC) purification efficiency of 96.8% and reduced workshop odor concentration from > 1,500 OU to \u2264 30 OU.<\/p>\n","protected":false},"excerpt":{"rendered":"
Industrial case study: Retrofit of a multi-stage VOC removal and deodorization system on a 1,200 kg\/h post-consumer r-HDPE bottle recycling line, achieving 96.8% VOC removal efficiency.<\/p>\n","protected":false},"featured_media":0,"template":"","material_family":[80,132],"material_form":[75,77],"production_problem":[115,119],"customer_segment":[51],"project_context":[57],"class_list":["post-310","case_study","type-case_study","status-publish","hentry","material_family-hdpe","material_family-thermoplastic-elastomer","material_form-pellets","material_form-regrind","production_problem-blockage-and-bridging","production_problem-residual-odor-and-voc","customer_segment-plastic-recycling-plants","project_context-existing-line-retrofit"],"_links":{"self":[{"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/case_study\/310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/case_study"}],"about":[{"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/types\/case_study"}],"wp:attachment":[{"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/media?parent=310"}],"wp:term":[{"taxonomy":"material_family","embeddable":true,"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/material_family?post=310"},{"taxonomy":"material_form","embeddable":true,"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/material_form?post=310"},{"taxonomy":"production_problem","embeddable":true,"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/production_problem?post=310"},{"taxonomy":"customer_segment","embeddable":true,"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/customer_segment?post=310"},{"taxonomy":"project_context","embeddable":true,"href":"https:\/\/polypelletizer.com\/wp-json\/wp\/v2\/project_context?post=310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}