About convective heat transfer For example, air moves upward when it becomes lighter by being wormed.As the result, surrounding cool air flow into the place where air being wormed and air convection occurred.This is the same for water and convective heat transfer takes place while wormed water move upward and cool water which was originally […]
First, what is “sludge”? In brief, it is a general term for muddy materials and has very wide scope.It is divided into organic sludge and inorganic sludge regarding to its chemical property.Sludge is derived from wastewater treatment, sewage treatment, various kind of plants and construction sites, and it is categorized as industrial waste sludge and […]
Drying of chemical plant slurry / Example of drying test Material to be dry: Chemical plant slurry Purpose of drying: Materials from waste products Moisture content: 92％W.B. before drying, 8％W.B. after drying Requirements for dryer: No clogging inside of the dryer since materials being dried are adhesive. 24-hour unattended operation. No change in components of the […]
Why steam is used? Latent heat of vaporization is used. Although steam is gas, it turns to liquid when it hits cold objects. During this liquefaction process, large amount of heat is produced. It is said that amount of the heat is two to five times larger than ones of warm water and oil. Heat […]
The continuation of previous content About moisture contents (1) / sludge drying, slurry drying, waste drying Also, moisture content is divided into “critical moisture content” and “equilibrium moisture content”.“critical moisture content” is the moisture content during a transition from constant rate period to falling rate period which are mentioned in the article “About drying process” […]
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