An apparatus and method for commissioning steam turbine generator power plants to advance the cleanliness of the complete steam cycle by the conditioned discharge of steam to the plant surface condenser.

A method and means for washing a floor of a recovery boiler, including mixing by mixing devices wash water in which remaining salt on recovery boiler furnace floor dissolves, and where wash water is sucked from a wash water pool on the furnace floor into suction openings of the mixing devices for implementing said mixing.

A method and means for washing a floor of a recovery boiler, including mixing by mixing devices wash water in which remaining salt on recovery boiler furnace floor dissolves, and where wash water is sucked from a wash water pool on the furnace floor into suction openings of the mixing devices for implementing said mixing.

An apparatus and method for commissioning steam turbine generator power plants to advance the cleanliness of the complete steam cycle by the conditioned discharge of steam to the plant surface condenser.

An apparatus and method for commissioning steam turbine generator power plants to advance the cleanliness of the complete steam cycle by the conditioned discharge of steam to the plant surface condenser.

Improved steamblow commissioning of a steam plant with continuous filtration of particle laden condensate through dual strainer filters with backflush means operatable in parallel to enable isolation of one and backflushing while the other is backflushed and venting backflushed particles to waste to enable an uninterrupted commissioning process recycling steam with significant particulate burden relived by continuous cycling in alteration through the dual filers and removal of particles to waste with backflush.

Provided are a method for removing scale and a scale remover that can efficiently remove scale deposited inside a boiler can or the like in an addition amount of chemicals permissible in terms of cost without corroding a boiler, particularly can efficiently remove scale deposited inside a boiler can even in a facility operated with feed water containing high-concentration iron. A method for removing scale deposited in a system of a steam generating facility, wherein polyacrylic acid having a weight-average molecular weight of more than 20,000 and 170,000 or less and/or a salt thereof is added to feed water of the steam generating facility. When the feed water contains iron, polymethacrylic acid having a weight-average molecular weight of more than 1,000 and 100,000 or less and/or a salt thereof is further added in combination.

Provided are a method for removing scale and a scale remover that can efficiently remove scale deposited inside a boiler can or the like in an addition amount of chemicals permissible in terms of cost without corroding a boiler, particularly can efficiently remove scale deposited inside a boiler can even in a facility operated with feed water containing high-concentration iron. A method for removing scale deposited in a system of a steam generating facility, wherein polyacrylic acid having a weight-average molecular weight of more than 20,000 and 170,000 or less and/or a salt thereof is added to feed water of the steam generating facility. When the feed water contains iron, polymethacrylic acid having a weight-average molecular weight of more than 1,000 and 100,000 or less and/or a salt thereof is further added in combination.

The present invention provides a deoxidizing agent for boilers excellent in an oxygen removal effect under wide temperature conditions. The deoxidizing agent for boilers comprises (A) a hydroxylamine compound represented by the following general formula (I), (B) a heterocyclic compound having an N-substituted amino group, and (C) an aminophenol derivative represented by the following general formula (II),

##STR00001## wherein R.sup.1 and R.sup.2 each independently represent an alkyl group having 1 to 5 carbon atoms;

##STR00002## wherein R.sup.3 to R.sup.6 each independently represent any one of (a) the following general formula (III), (b) OR.sup.10 and (c) R.sup.11, at least one of R.sup.3 to R.sup.6 representing (a), and R.sup.10 and R.sup.11 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;

##STR00003## wherein R.sup.7 represents a single bond or an alkylene group having 1 to 4 carbon atoms, and R.sup.8 and R.sup.9 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.

A sight glass system that simplifies the way a sight glass is cleaned and accessed during servicing a boiler or tank. This system allows someone to treat the boiler or tank with a cleaning liquid solution without taking off the pressure release valve of the vessel to pour in the solution. The cleaning process is now achieved easily with the sight glass system by taking off the service valve head cap to pour the treatment through the sight glass and into the boiler or tank with the shut off valves open. The system consist of a sight glass that is connected to a top and bottom valve having a removable threaded cap, a female threaded aperture on one side, and a threaded protrusion that secures the sight glass via a fastening system of a rubber washer, O-ring, and wing nut respectively. Furthermore, the top valve is designed in such a way that will allow the sight glass when not secured to slide up and out when the fastening system is unfastened. By unfastening the fastening system, the wing nut can move freely down the sight glass allowing for easy removal of the sight glass through the top valve when the cap is removed along with the rubber washer and O-ring. The top and bottom valves are connected to the main water shutoff valves respectively via a threaded member that is screwed on to the side of the valves containing a female threaded aperture.