AP-42, CH 10.5: Plywood Manufacturing - EPA
Contents 4 Thermal heat/process heat and fields of application 5 Water and steam as heat carriers 6 Design of an industrial boiler 7 How an industrial boiler system works 8 The use of boiler systems in practice 10 Bosch Industriekessel 2 | Industrial boiler technology for beginners
Why Plywood and Man-made Boards are Not required for
High pressure boilers heat water to create steam at over 15 psi and have water pressure over 160 psig. Combustion Efficiency: Combustion efficiency is how well the fuel is being used in combustion, which is different from stack loss, the heat carried away by flue gases and moisture.
10.5 Plywood Manufacturing 10.5.1 General Plywood is a building material consisting of veneers (thin wood layers or plies) bonded with an adhesive. There are two types of plywood: softwood plywood and hardwood plywood. Softwoods generally correspond to coniferous species. The most commonly used softwoods for manufacturing plywood are firs and
The sheets are then patched, graded, glued together and then baked in a press at a temperature of at least 140 °C (284 °F), and at a pressure of up to 1.9 MPa (280 psi) (but more commonly 200 psi) to form the plywood panel.
Plywood is made through following procedures, peel the log into laminas and dry them, then pile the laminas whose fibers are transverse to each other together, finally agglutinate and stress them in heat. Generally speaking plywood contains from 3 to 13 levels. 3-plywood and 5-plywood …
Steam Production From steam tables we can see that the total heat of steam does not vary a great deal as the boiler pressure increase The boiling point (b.p.) increases as the pressure increases Thus the sensible heat increases as the pressure increases, and the latent heat decreases Boiler pressures are expressed in psia, psig, bar, kg/cm2