牛奶巴氏杀菌机制造商
在Towobo上找到牛奶巴氏杀菌机制造商 — 板式HTST杀菌机、管式巴氏杀菌机、UHT超高温处理系统和间歇式杀菌机。
Milk pasteurisation methods and equipment types
Pasteurisation uses controlled heat to reduce the microbial load in milk to safe levels. The main pasteurisation methods used in commercial dairy production are: HTST (High Temperature Short Time) — milk is heated to 72°C and held for a minimum of 15 seconds in a holding tube, then rapidly cooled. HTST is the standard method for most commercial liquid milk production. Equipment is a plate heat exchanger (PHE) with a regeneration section, heating section, holding tube, and cooling section. Batch (LTLT) pasteurisation — milk is held at 63°C for 30 minutes in a jacketed vat with agitation. It is used at small scale (artisan dairy, farmhouse cheese production) and is simpler and lower in capital cost than HTST. UHT (Ultra High Temperature) — milk is heated to 135–150°C for 2–6 seconds using direct steam injection or indirect plate or tubular heat exchangers, then aseptically filled. UHT milk has a shelf life of 6–12 months at ambient temperature. ESL (Extended Shelf Life) pasteurisation uses milder heat treatment combined with microfiltration to achieve 28–45 day refrigerated shelf life.
Buyer guidance for milk pasteurisers
Before requesting a quotation, specify: (1) pasteurisation method required (HTST, LTLT batch, UHT, or ESL); (2) milk volume in litres per hour or litres per day; (3) whether the pasteuriser will also handle cream, yoghurt mix, or other dairy products; (4) downstream process (liquid milk filling, cheese making, yoghurt incubation, cream separation — each has different temperature requirements after pasteurisation); (5) homogenisation — is a homogeniser to be integrated into the pasteuriser line (standard for liquid milk and yoghurt); (6) cleaning requirements (CIP system integrated or separate); (7) available utilities (steam supply, electricity, cooling water or refrigerant); (8) required hygiene certification (EHEDG, 3-A Dairy Standards); (9) available floor area. For HTST systems, the flow diversion valve (FDV) is a critical safety component that diverts under-pasteurised milk back to the balance tank if temperature drops below the minimum — confirm this is included in the specification.
Frequently asked questions
What is the regeneration efficiency of an HTST pasteuriser, and why does it matter?
In an HTST pasteuriser, the regeneration section uses the heat from the hot pasteurised milk to pre-heat the incoming cold raw milk, recovering energy that would otherwise be wasted. Regeneration efficiency is expressed as a percentage of the total heat recovered. Modern HTST pasteurisers typically achieve 90–95% regeneration efficiency, which substantially reduces steam and cooling water consumption. When comparing pasteuriser quotations, ask for the regeneration efficiency and the resulting steam consumption per 1,000 litres of milk processed — this directly affects your operating cost.
How often do pasteuriser plates need to be replaced?
Plate heat exchanger plates and gaskets require periodic inspection, cleaning, and replacement. Gaskets in dairy PHEs typically last 2–5 years depending on the CIP chemical regime, operating temperatures, and frequency of thermal cycling. Plates can last significantly longer if not damaged by excessive pressure or cleaning abuse. Ask the supplier for the recommended inspection frequency, gasket replacement interval, and spare parts availability for your specific plate model. Standardised plate models from major manufacturers (Alfa Laval, APV, GEA) have widely available spare parts; proprietary designs from smaller suppliers may have limited availability.
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