| 摘要 |
<p>The invention is an integrated process for drying and briquetting coal (21) utilizes a conditioner (7) to output dried coal having a selected moisture content, temperature, mean particulate size and size distribution for briquetting. The preferred conditioner (7) fluidizes a bed of coal particles with steam generated during the coal drying process. The moisture content of the dried coal is in the form of steam which fills the pores and inter-particle void spaces of the coal particles. The moisture content of the dried coal is controlled in response to coal bed temperature. The dried coal is sealed from the atmosphere and conveyed at isothermal conditions to the briquetter (23) to maintain the coal temperature and moisture content constant. During briquetting, the steam in the particle's pores and inter-particle void spaces is condensed into water, collapsing the pore structures and filling the pores and spaces in the coal particles with water. This action produces a high density briquette which is resistant to moisture reabsorption and spontaneous combustion.</p> |
