Expansion joint for high-pressure high-temperature pneumatic transport of DRI or other abrasive particles
First Claim
1. A method for pneumatic transport of solid abrasive particles at high temperature through at least one straight pipe, comprising:
- anchoring the opposite ends of said pipe, maintaining said pipe under constant tension between such anchors by applying a force across at least one expansion joint in said pipe, and conveying said particles from one end to the other end of said tensioned pipe by a carrier gas, said tension being in magnitude at least sufficient to maintain the pipe in straight alignment without buckling of the pipe or sticking of the expansion joint and thereby overcome the separating forces acting on said pipe caused by the pressure of said carrier gas as well as the friction opposing free thermal expansion of said pipe.
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Accused Products
Abstract
Method and apparatus for pneumatically transporting solid and abrasive particulate materials at high temperature, by means of a carrier gas through a plurality of co-axial straight pipes. The pipes are maintained under constant tension by applying a force across at least one expansion joint coupling said pipes in order to maintain said pipes straight against the forces acting on said pipes which tend to cause bending and deformation thereof, as for example: thermal elongation, the weight of the solids conveyed through said pipes, the friction forces between said pipes and its supporting frame, and the pressure of the carrier gas inside said pipes. The constant tensioning force may be applied for example, by means of hydraulic cylinders in combination with a telescopic water-cooled sleeve.
10 Citations
14 Claims
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1. A method for pneumatic transport of solid abrasive particles at high temperature through at least one straight pipe, comprising:
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anchoring the opposite ends of said pipe, maintaining said pipe under constant tension between such anchors by applying a force across at least one expansion joint in said pipe, and conveying said particles from one end to the other end of said tensioned pipe by a carrier gas, said tension being in magnitude at least sufficient to maintain the pipe in straight alignment without buckling of the pipe or sticking of the expansion joint and thereby overcome the separating forces acting on said pipe caused by the pressure of said carrier gas as well as the friction opposing free thermal expansion of said pipe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification