Salt is Big Business. Salt manufacturing is among the oldest chemical industries in the world. Over the past century, annual global production has risen from 10 million tonnes to more than 200 million tonnes.
Bulk solids cooling is a common step in many chemical processes.
Drying of bulk solids is often required for preservation of the product and as a final step before storage. It also serves as a feed stock preparation step for adjusting the moisture content of the incoming material to the desired level for downstream processing.
The importance of fertilizers to the world economy can hardly be overstated and the growth in fertilizer consumption since the 1960s has been impressive. By supplying crops with essential nutrients, fertilizers facilitate efficient use of land and water.
The concept of a bulk solid cooler for fertilizer products was introduced to the industry over 20 years ago. Since then Solex has installed more than 60 coolers of this type in fertilizer plants around the world.
The drying of grains and oilseeds is critical for downstream processing and storage as it prevents caking, agglomeration, spoilage and degradation of material.
Traditional Cooling Technology Requires High Energy Consumption The most common method of cooling bulk solids is direct air-cooling – like fluid bed coolers or drum coolers.
Fluid bed technology is used for cooling, heating and drying of bulk solids materials, and takes place by passing a gas (most commonly air) through a perforated distributor plate which then flows through a layer (bed) of solids.