Brewery Setup Blog

Processing Of Wort After Boiling

Beer equipment adds wort and boils it. After boiling, the thermosetting substances are separated from the wort as soon as possible by physical methods, so on get a clear wort. The wort is then cooled to the fermentation temperature required by the process. While cooling, wort ventilation should be carried out to provide enough oxygen for yeast reproduction. Separation methods include cooling plate method, sedimentation tank method and Whirlpool method.

After the wort is boiled, the hot coagulation and cold coagulation in the wort should be separated as soon as possible to get clear wheat. Then cool the wort to the fermentation temperature required by the process (the lower fermentation should be cooled to 6-9 ℃, and the upper fermentation should be 12-18℃ ). While cooling, the wort is ventilated to provide enough oxygen for the yeast to multiply.

A thermal coagulum is an insoluble condensate formed by the condensation of high molecular nitrogen during the boiling process of wort. During the boiling process of wort, the thermal coagulation precipitates out with protein denaturation and continuous oxidation and polymerization of polyphenols and also adsorbs part of hop resin and other organic substances.

Factors affecting the amount of thermal coagulation:

The amount of precipitation of thermal coagulum is related to the number of nitrogenous substances in the wort and the solubility of the malt.

Once the thermal coagulation suspended in the fermentation broth is adsorbed by the yeast cells, it will affect the normal fermentation and sedimentation of the yeast cells. Also, the thermal coagulum in the wort can also lead to increased beer color, rough taste, long after-bitter, poor foam stability, and taste stability.

Whirlpool Tun

whirlpool tank is a flat-bottomed closed cylindrical vessel with a 2% slope at the outlet. The ratio of the height of the wort level to the diameter of the tank is 1:2-3. Modern Whirlpool tanks choose a ratio of 1:3.

New Whirlpool tanks generally have an insulating layer to prevent the wort from cooling. To better collect the hot solids, a conical hot solids collection cup is installed in the center of the bottom of the Whirlpool tank.

The wort enters the tank in the tangential direction, and there are two inlets, one at the bottom of the tank to avoid oxygen absorption. The other inlet is at 1/3 of the height from the bottom of the tank.

The wort enters the trough along the tangential direction of the trough wall to form a rotary motion. After the feeding of the belt, the rotating wort is allowed to decelerate , resulting in a whirling effect.

The solids in the wort are subject to the combined force of gravity and centripetal force and move towards the center of the trough, following the whirling effect of natural deceleration and rotation.

After the wort is boiled and poured into the rotary sedimentation tank, after separating the hop lees and thermal coagulation, the following treatments should be carried out :Rapid cooling to bring the wort temperature to the need for yeast inoculation the wort is cooled and ventilated, and yeast can synthesize substances such as sterols and unsaturated fatty acids necessary for its reproduction only after absorbing enough oxygen.Precipitation and separation of hot and cold coagulants in the wort to ensure normal fermentation and desired beer quality.

If you are planning to open a brewery. TIANTAI BrewTech could help you answer your questions and supply the brewery equipment system. We supply 2-150bbl complete beer brewing brewery equipment system including malt milling equipment, brewhouse equipment, fermenters, brite beer tanks, beer bottling machine,beer canning machine, beer kegging machine, hopping machine, yeast propagation equipment. We also supply all auxiliary brewery systems like steam heating pipe and valves, water treatment, filter, air compressor etc. Everything in brewery are all in our list.

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