An apparatus is disclosed that is designed to be able to clean HVAC condensers. The apparatus comprises a plurality of pipes that facilitates the passage of water through them allowing water and/or a cleaning solution to clean the condenser by spraying the condenser with sprayers without having to move the apparatus. The apparatus is designed so as to be able to spray every part of the condenser without having to move the apparatus. The apparatus may also have a timer associated with it that allows the condenser to be cleaned at periodic intervals.

The present invention comprises a waterless mixture which includes a biuret and/or urea, silica, and melamine particles coated with a layer of magnetite iron oxide for cleaning furnaces, heaters or boilers. A typical cleaning mixture comprises 30-50 percent silica, 20-50 percent biuret and/or urea, 20-40 percent melamine and 1-5 percent iron oxide. The cleaning can be performed at any time. This may lead to a reduction in fuel consumption, less air pollution, increased throughputs, and avoidance of equipment damage.

Systems and methods for cleaning a heat recovery steam generator system including tubes and fins associated therewith using deep cleaning alignment equipment are described. The deep cleaning alignment equipment primarily includes at least one wedge and at least one wand. The wedge may be an elongate wedge configured to maximize the surface area that contacts the tubes and fins, which in turn minimizes the amount of stress about any specific point of the tubes or the fins. Additionally, the wedge may be made of a soft, composite material, such as a high strength carbon fiber nylon. The composite material is softer than the material that makes the tubes and fins. As a result, when the wedge contacts the tubes and fins, the tubes and fins will not sustain damage. Instead, any damage that may occur would be to the wedge.

A heat exchanger capable of preventing sticking of slurry is disclosed. The heat exchanger includes: a flow passage structure having a heating flow passage and a cooling flow passage formed therein; and a water-repellent material covering a side surface of the flow passage structure. A side surface of the heat exchanger is constituted by the water-repellent material.

An apparatus and a method for cleaning heat transfer plates suspended between end plates of an open plate heat exchanger are provided. The apparatus includes a spraying device including a first rod, at least a first nozzle arranged on a nozzle side of the first rod, which nozzle side is arranged to face a first heat transfer plate side, a second rod and at least a second nozzle arranged on a nozzle side of the second rod, which nozzle side is arranged to face a second heat transfer plate side. The first and second rods are essentially parallel and connected. The spraying device has a first mode in which the first and second rods are arranged to move between the heat transfer plates in a first direction perpendicular to a longitudinal extension of the first and second rods and parallel to an extension plane of the heat transfer plates. Meanwhile, the first and second nozzles are arranged to spray cleaning fluid onto the first and second heat transfer plate sides, respectively.

A cleaning apparatus for cleaning a cooling tube array (15) of a heat ex-changer has a nozzle carriage (16) movably held on a truss beam, and a plurality of cleaning nozzles (40) mounted to the nozzle carriage. A truss beam has two parallel C-channel rails (20) having back sides that face each other, a tube (22) arranged separate and distant from the C-channel rails and at a different height than the C-channel rails in a cross-sectional plane of the truss beam, and truss supports (24) connecting the rails and the tube; the nozzle carriage has rollers (48) that are arranged for travelling in the C-channel rails. A water intake (82) is coupled to the nozzle manifold (42) and to a hydraulic drive (80) having a mechanical power take-off member (96) that is operably coupled to the nozzle carriage (16) for moving the nozzle carriage.

A system capable of autonomous operation is disclosed for cleaning a tube bundle of a heat exchanger core. The system comprises a lance for directing a jet of fluid into spaces between the tubes of the bundle, a carriage for advancing the lance into the bundle, a mount movable relative to the carriage for holding the lance, and a sensor for detecting relative movement between the lance and the carriage, so as to detect when a reaction force acting on the lance upon encountering an obstruction in the tube bundle exceeds a predetermined limit.

A robot is disclosed for cleaning the exterior of tubes of a heat exchanger. The robot comprises a lance for directing a jet of fluid into spaces between the tubes, a carriage for transporting the lance in a direction of travel parallel to axes of the tubes of the heat exchanger, and traction assemblies for engaging the tubes to enable the carriage to be advanced along the tubes, wherein the traction assemblies are each moveable relative to the carriage in a direction transverse to that of travel in order to change the track width of the robot.

The present invention comprises a waterless mixture which includes a biuret and/or urea, silica, and melamine particles coated with a layer of magnetite iron oxide for cleaning furnaces, heaters or boilers. A typical cleaning mixture comprises 30-50 percent silica, 20-50 percent biuret and/or urea, 20-40 percent melamine and 1-5 percent iron oxide. The cleaning can be performed at any time. This may lead to a reduction in fuel consumption, less air pollution, increased throughputs, and avoidance of equipment damage.

A multiple tube-type heat exchanger (25) is provided with a cylindrical heat exchanger shell (36) and a heat transfer tube unit (38) which is mounted in a removable manner within the heat exchanger shell ( 36). The heat transfer tube unit (38) is provided with a plurality of heat transfer tubes (50) extending inside the heat exchanger shell (36) in the longitudinal axis direction; a binding member (51) serves also as this binding member) for binding the heat transfer tubes (50); and a plurality of rotary journal sections (51, 52) which are concentric with the center axis (CL) of the heat transfer tube unit (38), are provided at positions located at a distance from each other in the direction of the center axis (CL), and enable the heat transfer tube unit (38) to be supported by predetermined rotation support sections provided outside the heat exchanger shell (36).