Total heat exchange element
A technology of total heat exchange and components, applied in heat exchange equipment, laminated components, heating methods, etc., to achieve high total heat exchange efficiency
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[0021] As beating and dispersing equipment used in the preparation of natural pulp fibers, for example, a beating machine; a PFI mill; a single disc refiner (SDR); a double disc refiner (DDR); , ball mill used in pulverization; Dyno mill; grinding device; rotary blade type homogenizer with shear force provided by high-speed rotating blade; generated between high-speed rotating cylindrical inner blade and fixed outer blade Double cylinder type high-speed homogenizer with shearing force; Ultrasonic crusher for miniaturization through the impact of ultrasonic waves; Apply a pressure difference of at least 20MPa to the fiber suspension to make it pass through small-diameter orifices to achieve high speed, It is a high-pressure homogenizer, etc. that make it collide and decelerate rapidly, thereby applying shear force and cutting force to the fiber. Among them, a refiner is particularly preferred. The target natural pulp can be obtained by adjusting the types of beating and disper...
Embodiment 1
[0043] After dissociating bleached kraft softwood pulp (NBKP) at a concentration of 3%, 2.5 parts of aluminum sulfate and an internal sizing agent were added to 100 parts of pulp slurry obtained by sufficiently beating with a double disc refiner and a deluxe beater 0.15 parts to prepare paper stock. Then, using the paper stock, through a Fourdrinier paper machine, a quantitative 40g / m 2 Substrate sheets for pads. In addition, using a nip coater, under the conditions of a speed of 60 m / min and a nip pressure of 343 kPa, the resulting substrate sheet was impregnated to contain 5.1 g / m 2 Calcium chloride was used as a hygroscopic agent, and it was dried so that the moisture content became 10%, and the gasket used for the total heat exchange element was obtained.
[0044] Next, 2.5 parts of aluminum sulfate was added to 100 parts of pulp slurry obtained by dissociating bleached kraft softwood pulp (NBKP) at a concentration of 3% using a double disc refiner and a Deluxe beater. ...
Embodiment 2
[0046] In the corrugated manufacturing process, 2.5 parts of aluminum sulfate, 0.5 parts of internal sizing agent and 1.0 part of paper strength agent are added to 100 parts of pulp slurry to prepare paper stock, and the sizing press device contains Except for 0.2 parts of starch and 0.2 parts of sizing agent, it carried out similarly to Example 1, and produced the total heat exchange element.
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