Frame plating

Plate and Frame. Plate-and-frame systems consist of plates (Fig. 15) each with a membrane on both sides. The plates have a frame around their perimeter which forms flow channels ca 1 mm wide between the plates when they are stacked. The stack is clamped between two end plates, sealing the frames together. 

The frame plates are typically epoxy-painted carbon-steel material and can be designed per most pressure vessel codes. Design limitations are in the Table 11-18. The channel plates are always an alloy material with 304SS as a minimum (see Table 11-18 for other materi s). 

Frame plate material Stainless steel Micro channel width depth length 500 pm 500 pm 70 mm... 

Frame plate 2 mm thickness Distance liquid/gas 13 mm entries... 

An industrial standard method has been developed to test the lightfastness of polymers in accelerated test equipment [103]. The apparatus consists of a quartz-xenon tube with a special optical filter between the light source and the specimen to produce light that resembles window glass-filtered daylight [104], Samples are mounted at a specific distance from the arc and are supported on a frame which revolves around the arc 1 to 5 times per minute for uniform exposure. A blower unit in the base provides a flow of air which makes it possible to maintain a black panel temperature of 45°C, measured by a black panel thermometer which is positioned at level with the samples. A black panel unit consists of a bimetallic thermometer mounted on a steel frame. Both faces of the frame plate and also the stem of the thermometer are coated with a heat-resistant glossy black enamel. The relative humidity level in the exposure cabinet is closely controlled. 

FIGURE 8.18 Left, a demountable cell with spacer. Right, a demountable cell without spacer. Note that there are no drilled holes for the sample and no inlet or outlet ports. Both metal frame plates (front and back) have holes for light to pass. 

Fig. 9. Plate heat exchangers (a) plate—frame heat exchanger when hot fluid from the heat source enters the heat exchanger through connections in the stationary frame plate and is channeled over one side of each plate. Cold fluid enters through different frame plate connections and flows on the other side of each plate in a direction opposite to the hot fluid direction. Courtesy of Bell Gosset. (b) Limco model 6502 plate—fin heat exchanger having compact plate—fin aluminum brazed liquid-to-aii construction. The brazed plate—fin construction provides the most efficient heat-exchanger system in terms of size,...

Plate and Frame. Plate-and-frame systems consist of plates each with a membrane on bodi sides. 

There is another type of S chamber which permits prior saturation of the chamber atmosphere, simultaneously with the preconditioning of the adsorbent, before starting the chromatographic process (Fig. lb). For this purpose, the adsorbent is removed (a 1 cm width) from all the sides of the plate (1). The opposite frame plate (2) contains, on all of its surface, a thin layer of sorbent. The two plates are fixed by two clamps (3). The chamber is introduced into the trough (4) through a slit. At the beginning, the level of the eluent (5) does not touch the bottom of adsorbent on the thin-layer plate (1). When saturation of the atmosphere is achieved, a volume of eluent is added to the eluent in the trough until the adsorbent is wetted. At this moment, the separation can be started. 

In Figure 257 two typical cantilever-shaft designs are depicted. In Figure 257(a) (K. R. Komarek, Inc., Elk Grove Village, 111., USA) the rolls (1) are positioned one above the other. In this case, feeding must be accomplished horizontally from one side. The roll shafts (2) are supported in two lower (4) and two upper bearing blocks (4a) which are clamped in between two frame plates (3) held... 

FIGURE 21 Images of Men Attacking Women. From the base of the frame, Plate 1-7. (Harley 3469, by permission of the British Library)... 

Filter, plate and frame cast iron, with frames, plates, stand excluding filter medium. FOB cost = 16000 for an effective filter area = 10 m with n = 0.55 for the range 1-150. L+M = 1.8. L/M = 0.42. Alloy factors cast iron, X 1.00 bronze, X 3.0 lead, X 2.4 rubber lined, X 2.7 PVC, X 2.0. 

Filter, plate and frame yellow pine, with frames, plates, stand excluding filter medium. FOB cost = 14 200 for an effective filter area = 10 m with n = 0.50 for the range 1-150. 

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