In a method for protecting heat exchanger pipe in boiler systems having at least one heat exchanger pipe, which is surrounded by a ceramic component, into which flue gas is directed from at least two opposite sides, gas is introduced between the heat exchanger pipe and the ceramic component.

The boiler (1) according to an aspect of the present invention is provided with a boiler main body (3) and a steel support frame (5) that suspends and supports the boiler main body (3). The boiler main body (3) is provided with: a furnace wall (11) composed of water pipes (15) and plate-like fins (16) arranged in an alternating manner; an internal element (4) housed inside the furnace wall (11); and a buffering mechanism (20) configured to attenuate vibration energy when relative displacement, of the internal element (4) with respect to the furnace wall (11), occurs that exceeds a predetermined value. The buffering mechanism (20) is disposed between the furnace wall (11) and the internal element (4) in the main vibration direction of the internal element (4), and the load on the buffering mechanism (20) caused by interference is transmitted to the fins (16).

A watertube panel portion for a fluidized bed reactor and a corresponding method. The watertube panel portion includes multiple parallel metal tubes having a tube length L1, an outer surface, an original outer diameter OD1, and an original wall thickness WT1, and a circumferentially extending recess formed in a central portion of each of the tubes, between first and second end portions. The recess has a constant depth D that is less than the wall thickness WT1. The recess encircles the outer surface of the central portion of the metal tube. A circumferentially extending metal coating has a constant thickness of at most the depth D of the recess to blanket the recess of each of the multiple metal tubes. A fin is continuously welded between each pair of adjacent tubes.

Disclosed are an electroplating repair apparatus, an electroplating repair system having the same, and an operating system thereof. The apparatus includes a probe body extending a predefined length in a structure corresponding to an inner diameter part of a tube, an electroplating electrode attached to and surrounding an outer circumferential surface of the probe body, a sealing member attached to opposite end sides of the probe body to seal a target portion to be electroplated, and a solution supply line supplying a solution to the target portion through the inside of the probe body, wherein the apparatus has a structure capable of wholly repairing the inside of the tube including a sealing welding part and an expanded part.

A method is disclosed for anticipating operation characteristics of a steam generation system, the steam generation system comprising at least one boiler. The method comprises conducting a fuel analysis of a solid fuel and anticipating the at least one operation characteristic of the steam generation system at the time when a specific partial quantity of solid fuel is combusted in the furnace of a boiler of the steam generation system, and further determining at least one adapted setpoint of at least one operation parameter of the steam generation system dependent upon the fuel composition of any specific solid fuel partial quantity so as to counteract and/or remedy changes of the at least one operation characteristic which are caused by the fuel composition of the specific solid fuel partial quantity. The method may be employed to improve operation of a steam generating system when the fuel composition varies.

A heat exchanger for heating a fluid in an incineration plant, comprising at least one heat exchanger component wherein the side in contact with the flue gas has an oxide layer comprising an -Al.sub.2O.sub.3 which protects the heat exchanger component against corrosion caused by corrosive compounds entrained or comprised by the flue gas.

The present disclosure relates to a heat transfer tube comprising nanostructures formed on the surface, and a method for manufacturing the same, and by forming nanostructures on a heat transfer tube surface, a superhydrophobic surface may be obtained under a high temperature environment as well. In addition, superhydrophobicity may be enhanced by further forming a hydrophobic coating layer on the nanostructure-formed heat transfer tube surface. By using a method of forming nanostructures by dipping the heat transfer tube surface, complex shapes may be coated, and therefore, a plurality of assembled heat transfer tubes may be coated, and damages occurring during a process of assembling the heat transfer tube after coating may be prevented.

A watertube panel portion for a fluidized bed reactor and a corresponding method. The watertube panel portion includes multiple parallel metal tubes having a tube length L1, an outer surface, an original outer diameter OD1, and an original wall thickness WT1, and a circumferentially extending recess formed in a central portion of each of the tubes, between first and second end portions. The recess has a constant depth D that is less than the wall thickness WT1. The recess encircles the outer surface of the central portion of the metal tube. A circumferentially extending metal coating has a constant thickness of at most the depth D of the recess to blanket the recess of each of the multiple metal tubes. A fin is continuously welded between each pair of adjacent tubes.

A boiler tube reinforcement device reinforces a boiler tube including a weld portion. The reinforcement device includes: a strip-shaped first steel plate that is wound and fixed by welding in a region including the weld portion of the boiler tube; a first reinforcement member in surface contact with an outer peripheral surface corresponding to one semi-circumference of the boiler tube in an outer peripheral surface of the first steel plate wound around the boiler tube; a second reinforcement member in surface contact with an outer peripheral surface corresponding to another semi-circumference of the boiler tube in the outer peripheral surface of the first steel plate wound around the boiler tube, wherein the second reinforcement member covers the outer peripheral surface of the first steel plate together with the first reinforcement member; and a coupling member that couples the first reinforcement member and the second reinforcement member together around the boiler tube.

A reinforcement device for a cylindrical pipe through which steam passes, the steam being obtained by heating water using combustion heat of a boiler, includes: a first reinforcement member that makes surface contact with an outer peripheral surface corresponding to one semi-circumference of the pipe, the first reinforcement member having a thickness that decreases toward both ends in a longitudinal direction of the pipe; a second reinforcement member that makes surface contact with an outer peripheral surface corresponding to another semi-circumference of the pipe, the second reinforcement member having a thickness that decreases toward both the ends in the longitudinal direction of the pipe; and a coupling member that couples the first reinforcement member and the second reinforcement member together around the pipe.