System for removing surface moisture from coal
AssigneeCoomtech Ltd
InventorPatrick Foss-Smith
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Abstract
This invention provides a system for removing surface moisture from granulated coal or other materials in particulate form, the system comprising a dryer, wherein the dryer has: an in-feed (1) for material particles; an in-feed (3) for entrainment gas (suitably air) to provide dilute phase gas entrainment of the particles; and turbulence—inducing means (5) configured to subject the flow of gas-entrained particles to turbulence to strip water from the surface of the entrained particles. The system is highly efficient and economical to operate, requiring no external heat input and yet achieving a high drying effectiveness.
Claims21
A system for removing surface moisture from granulated coal or other materials in particulate form, the system comprising a dryer, wherein the dryer has:
- an in-feed for material particles;
- an in-feed for entrainment gas(es), to provide dilute phase gas entrainment of the particles;
- turbulence-inducing means configured to subject the flow of gas-entrained particles to turbulence, wherein the turbulence-inducing means comprises a supply of dry gas(es) in use and that delivers the dry gas(es) so as to impinge on/intersect with the gas-entrained particle flow whereby inducing turbulence to strip water from the surface of the entrained particles;
- and
- a stator body through which the gas-entrained particles flow in use,
- wherein the turbulence-inducing means comprises one or more ports in the stator body that delivers high velocity compressed/pressurised dry turbulence-inducing gas(es) inwardly into a main duct to intersect with the gas-entrained particle flow, wherein the one or more ports deliver the turbulence-inducing gas(es) substantially directly radially inwardly and substantially orthogonally to the gas-entrained particle flow.
A process for removing surface moisture from granulated coal or other materials in particulate form, the process comprising feeding the material particles and entrainment gas(es) into a duct to provide dilute phase gas entrainment of the particle, introducing dry gas(es) to impinge on the flow of gas-entrained particles to cause turbulence in the flow of gas-entrained particles to strip water from the surface of the entrained particles, wherein the dry gas(es) are introduced radially inwardly and substantially orthogonally to the flow of gas-entrained particles.
Dependencies are inferred from the claim text.