Clean-in-place pump

If the Clean-in-Place Pump cannot Provide the Required Flow Rate, Can the Pump be Run at Higher Pressure to Compensate ... 

Clean in place (CIP) A system used in clean rooms, consisting of tanks, piping, pumps, and associated controls for the distribution of w ash and rinse solutions. 

High-shear stirrers can be a useful way of mixing components, but they often draw in air and can destroy added emulsions. Mixing can also be done through an external circulating loop with an in-line pump or emulsifying mixer. All systems should ideally be connected to a clean-in-place (c.i.p.) system. 

Figure 34 Freeze-drying plant condenser and shelves cooled with LN2. Clean-in-place system in chamber and condenser. 1, LN2 inlet to condenser and heat exchanger 2, N2 outlet from the condenser and heat exchanger 3, heat exchanger for the brine in shelves 4, brine to and from shelves 5, pressure plate for stoppering of vials 6, piston rod with bellows 7, hydraulic piston for 5 and 6 8, hydraulically operated valve 9, hydraulic system 10 and 13, water and steam inlet 11, pumping system 12, water outlet. (AMSCO Finn-Aqua GmbH, D-50354 Hiirth, Germany.)...

Circulation. The vessel is filled with cleaning solution and allowed to stand for a short time, after which the solution is either agitated to increase internal circulation, or circulated through an auxiliary system (called a clean-in-place system, as discussed later). FVesh makeup solution can be pumped in if used solution is withdrawn. In boilers, nitrogen can provide agitation for more-effective scale removal. 

CIP system The clean-in-place skid consists of a hot water tank, centrifugal transfer pump and an air-driven diaphragm pump. Diaphragm pumps for in-Hne addition of 12.5% sodium hypochlorite, 50% citric acid and 50% sulphuric acid. 

Clean-in-place (CIP) — the membranes are cleaned with acid followed by sanitising with sodium hypochlorite solution when the TMP exceeds 1 bar, typically 4— 6 weeks. Only one membrane unit is cleaned at a time. A combination of citric acid and sulphuric acid is inj ected by the dosing pump in the filtered water transferred from the CIP tank. The solution is circulated for 30 min followed by soak and aeration steps that last 90 min. Next, a dilute sodium hypochlorite solution is injected by the dosing pump in the filtered water transferred from the CIP tank. The solution is circulated for f SO min followed by soak and recirculation steps that last 90 min. 

Some breweries deliver pasteurized beer, similar to that dispensed into kegs, in tanker wagons directly to the point of sale. The beer is pumped through a hose from the wagon into cellar tanks in the inn cellar. Such cellar tanks (usually about 8 hi or 5 brl) may be aluminium or stainless steel and may be equipped with cleaning-in-place facilities and also with means of maintaining constant pressure. Other cellar tanks of similar size are of mild steel construction and the beer is filled into a disposable plastic bag which acts as a liner to the tank. In such tanks, the beer may be emptied from the bag by applying gas pressure (usually air) within the top of the tank upon the plastic bag. It is not normal to use tank beer systems unless the beer within the tank is likely to be held for 4 days or less. 

Alternative means for liquid discharge have been developed, largely from other centrifuge types, such as centripetal and skimmer pumps. Decanters have been fitted with discs to improve clarification performance, and sanitary performance has been improved by the development of clean-in-place (CIP) methods. 

Decanters in casein production will often have a centripetal pump discharge to combat foam, and axial flow, as well as clean-in-place systems. Lactose production uses a double-lead conveyor, with on-the-beach rinsing, and a reslurry rinse solids collector, as well, again, as CIP. 

The precision rotameter is a secondary calibration device. If it is to be used in place of a primary device such as a bubble meter, care must be taken to ensure that any introduced error will be minimal and noted. The precision rotameter may be used for calibrating the personal sampling pump in lieu of a bubble meter provided it is (a) Calibrated with an electronic bubble meter or a bubble meter, (b) Disassembled, cleaned as necessary, and recalibrated. It should be used with care to avoid dirt and dust contamination which may affect the flow, (c) Not used at substantially different temperature and/or pressure from those conditions present when the rotameter was calibrated against the primary source, (d) Used such that pressure drop across it is minimal. If altitude or temperature at the sampling site are substantially different from the calibration site, it is necessary to calibrate the precision rotameter at the sampling site where the same conditions are present. 

A cover plate on a pump housing is held in place by eight bolts. A pipe fitter is instructed to repair the pump. The fitter removes all eight bolts only to find the cover plate stuck on the housing. A screwdriver is used to pry off the cover. The cover flies off suddenly, and toxic liquid sprays throughout the work area. Clearly the pump unit should have been isolated, drained, and cleaned before repair. There is, however, a better procedure for removing the cover plate. What is this procedure ... 

Another possibility to clean the waste gases of the tanks consists in placing a small scmbber with 500 m3/h on each tank (Fig. 10). This implement is compact and the air concentration is left out. As far as costs are concerned, there is no difference as all units, such as water pump, fan and control, must be provided for three times. 

To start a vacuum system such as that illustrated in Fig. 5.1, the clean main trap is fitted in place with an even coat of stopcock grease on the joint. A Dewar partially filled with liquid nitrogen is raised around this trap, and the fore pump is immediately turned on. CAUTION Oxygen from the atmosphere will condense in a trap heid at liquid nitrogen temperature therefore, it Is important never to leave a trap cooled to liquid nitrogen temperature exposed to the atmosphere for a significant length of time. When the line has pumped down to less than 1 torr, the... 

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