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US3151461A - Means for removing non-condensible gases from boiler feedwater in a power plant - Google Patents

Means for removing non-condensible gases from boiler feedwater in a power plant Download PDF

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US3151461A
US3151461A US192705A US19270562A US3151461A US 3151461 A US3151461 A US 3151461A US 192705 A US192705 A US 192705A US 19270562 A US19270562 A US 19270562A US 3151461 A US3151461 A US 3151461A
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feedwater
turbine
condensible gases
removing non
condenser
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Joseph F Sebald
Igor J Karassik
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Edison International Inc
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Worthington Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0068—General arrangements, e.g. flowsheets

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  • a POWER PLANT Filed may 7, 1962 2 Sheets-Sheet 2 FIG. 2
  • One such prior art arrangement disclosed provides means in a condenser coacting therewith to provide an arrangement for removing non-condensible gases such as oxygen.
  • this auxiliary steam source rather than effectively functioning to remove non-condensibles in a local area in the condenser merely blanketed the condenser in these areas and failed to achieve its intended function.
  • the present invention overcomes the foregoing objections by associating means with a condenser which localize the auxiliary steam supply to appreciably increase the deaeration qualities of the unit and further provides an arrangement for returning condensate collected in the storage hotwell through the localized area for removal of the non-condensibles present therei Accordingly, it is an object of this invention to provide optimum removal of air and non-condensible gases in the boiler feedwater of a power plant during all conditions of operation including startup and shutting down.
  • FIGURE 1 is a front view of a condenser turbine system partly in section and showing the invention contemplated herein.
  • FIGURE 2 is a diagrammatic view of a modified arrangement of the system shown in FIGURE 1.
  • FIGURE 1 of the drawings there is shown a condenser, generally designated 1, and comprising a shell including a plural set of condensing tubes 3 and 4 disposed in the upper portion of the shell.
  • a source of cooling water is passed through the tubes to condense the exhaust steam passed into the condenser from the turbine 5 mounted in any convenient fashion thereon.
  • the condensed feedwater is collected in a collecting hotwell 6 formed beneath the condensing tubes.
  • Collecting hotwell 6 is shown as comprising a substantially horizontal tank-like arrangement 7 having a U-shaped central portion 8.
  • the means for removing non-condensib-le gases mounted to the U-shaped portion of the collecting hotwell is the means for removing non-condensib-le gases, generally designated 9, and shown by way of example as a deaerator.
  • the deaerator as is well known is provided with horizontal trays 2t) and a baffle or like arrangement 11 for directing feedwater over the trays to break up the water in droplets so that more complete removal of the air and non-condensible gases will take place.
  • Removal of non-condensible gases from the feedwater in the means 9 is provided by extracting steam from turbine 5 through line 10 which is centrally disposed in the condenser and connected to the means for removing non-condensible gases.
  • condensed feedwater from the collecting hotwell 6 can be passed therefrom into the means for removing non-condensible gases with the provision of a transfer pump 19.
  • Condensed water is passed from hotwell 5 through line 12 which may include steam ejectors 21' or other applicable heat exchangers, to the deaerator 9.
  • deaerated feedwater will be collected in the storage means 13 located at the bottom portion of the shell 2 and passed by condensate pump 14 to the boiler of the power plant.
  • a recirculating arrangement generally designated 12, and shown as a bypass, line 5 having valves 16' and 1.6" respectively disposed therein which pass feedwater in the hotwell 13 to the collecting means 6 or deaerator 9 in any convenient proportion.
  • pump 19 can be started to pass fluid in the collecting means 6 to the deaerator 9. Removal of non-condensible gases from the water passed through the deaerator 9 is accomplished with the provision of a conduit 22' which is connected to an auxiliary steam supply and therefore permits the passage of the steam as desired through the storage means 13 up through the deaerator 9 to act on the water to provide the proper degree of deaeration.
  • Removal of the non-condensible gases is accomplished by the incorporation of a vent means 17 which discharges into the condensing portion of the condenser and with the provision of a valve 18 in extraction line 10 it will be evident that non-condensible gases and auxiliary steam are precluded from flowing into the turbine during startup and when the initial phase of deaeration is taking place.
  • control of the initial phase of deaeration can be conveniently tied into the control room of a power plant, or manually accomplished by simply closing down valve 16' and/ or 16 and valve 16 as soon as indicators show that turbine extraction pressure and temperature that is re quired for deaeration has been reached. It is clear from FIGURE 1 that recirculation can be accomplished directly to the deaerator 9 by opening valve 16' and closing valves 16 and 16".
  • FIGURE 2 diftors in some degree from the form shown in FIGURE 1 but the principles of construction and the general principles of operation are similar.
  • This form of the invention includes an additional condenser and is adapted to operate in accordance with the principles contemplated herein with this additional condenser.
  • plural condensers 21 and 22 are connected by conduits 23 and 24 to the turbine exhaust.
  • Each condenser has a collecting hotwell Z and 26 arranged beneath the condensing portion of the condenser to receive condensed steam therefrom.
  • the storage hotwell 27 is disposed in a trapezoidal-type tank which is spaced between the condensers 21 and 22 and disposed beneath the turbine 28.
  • the means for removing non-condensible gases 29 is disposed in the upper portion of the shell of the storage hotwell 27. In this fashion water can be pumped by transfer pumps 34) and 31 from the collecting hotwells to the means 29 and passed therethrough in heat exchange relation with steam supplied to the storage hotwell and flowing upwardly through the means 29 in order to remove the air and non-condensible gases from "the feedwater.
  • the treated feedwater can then be passed by condensate pump 31 tothe boiler of the power plant.
  • steam is supplied to the means 29 from extraction line 32 which is substantially centrally disposed in the above described arrangement.
  • an auxiliary steam source is provided for and steam therefrom is passed to the storage hotwell 27 through conduit 33.
  • steam for passage in counterflow relation with feedwater is provided when the temperature and pressure of the turbine exhaust is or has not yet reached required conditions.
  • feedwater collected in storage hotwell 27 is passed to the collecting hotwells through recirculation means or bypass line 34 having valving 35' and 35 and closing valves 35" and 35" conveniently disposed to preclude flow to the boiler and permit flow to the collecting hotwells or in any convenient proportion to deaerator 29 as desired by the operator.
  • water collected in the storage well can be first treated by passing same to the collecting hotwell and through the transfer pump to the means 29 for deaeration before this feedwater is passed to the boiler.
  • fluid can be circulated directly to the deaerator through lines 36 and 37 connected to lines 38 and 39 by closing valves 35 and 35 and opening valves 35" and 35'.
  • a condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting means, storage means, and means for removing non-condensible gases arranged in how circuit relation so that exhaust from said turbine is passed through said condensing means, to said collecting means, and through said means for removing non-condensible gases before being passed to said storage means; pump means connected to said storage means at one end and to the power plant at the other end to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing noncondensible gases to act on feedwater passing therethrough, recirculating means interconnecting said storage and collecting means and operative for a predetermined period of time to return feedwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of steam whereby steam
  • a condenser including means for removing non condensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting ieans, storage means, and means for removing non-condensible gases arranged in flow circuit relation so that exhaust from said turbine is passed through said condensing means, to said collecting means, and through said means for removing non-condensible gases before being passed to said storage means; pump means connected to said storage means at one end and to the power plant at the other end to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough; bypass means interconnecting said pump means to said collecting means and operative for a predetermined period of time to return fecdwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to
  • a condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting means, storage means, and means for removing noncondensible gases, said means for removing non-condensible gases disposed between said collecting means and said storage means to preclude flow from said collecting means to said storage means other than through said means for removing non-condensible gases, a first pump means connected to said collecting means at one end and to said means for removing non-condensible gases at the other end to pass feedwater from said collecting means through said means for removing non-condensible gases, a second pump means connected in said condenser and interconnecting said storage means to the power plant to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flow flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough, bypass
  • said condensing means comprises a first and second condenser each having a collecting means arranged at the bottom portion thereof, each of said collecting means including a pump means connected to said means for removing noncondensible gases, and said storage means being disposed between the first and second condensing means and beneath the turbine.
  • a condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine, said condenser comprising a shell having an upper portion and a lower portion, a condensing means comprising a nest of tubes arranged in the upper portion, a substantially horizontal collecting means disposed beneath said condensing means and to collect steam condensed by said tubes, a storage means disposed beneath said collecting means and at the bottom portion of said shell, said means for removing non-condensible gases disposed centrally in said condenser and connected to said collecting means, a transfer pump connected to said collecting means and said means for removing non-condensible gases to pass feedwater of said collecting means to said means for removing non-condensible gases, a condensate pump connected to said storage means at one end and to said power plant at the other end to supply feedwater thereto, and extraction line centrally disposed in said condenser and interconnecting said turbine and said means for removing
  • a first and second condenser includingmeans for removing non-condensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine, said turbine having plural exhaust outlets, means for connecting said first and second condensers to said exhaust outlets of said turbine, each of the condensers comprising a shell including a tube nest at the upper portion and a collecting means at the lower portion, storage means disposed between said first and second condensers, said means for removing non-condensible gases connected to said storage means and at the upper portion thereof, a transfer pump means connected to each of said collecting means at one end and to said means for removing non-condensible gases at the other end to pass feedwater from said collecting means to said means for removing non-condensible gases, at condensate pump connected to said storage means at one end and to said power plant at the other end to pass feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said

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Description

Oct. 6, 1964 J. F. SEBALD ETAL 3,151,461
MEANS FOR REMOVING NON-CONDENSIBLE GASES FROM BOILER FEEDWATER IN A POWER PLANT 2 Sheets-Sheet 1 Filed May 7, 1962 .oaon-aopuaooo I FIG.
JOSEPH FSEBALD IGOR J'. KARASSIK INVENTORS #AM,
Oct. 6, 1964 F. SEBALD ETAL 3,151,451
MEANS FOR REMOVING NON-CONDENSIBLE GASES FROM BOILER FEEDWATER m A POWER PLANT Filed may 7, 1962 2 Sheets-Sheet 2 FIG. 2
JOSEPH ESEBALD IGOR JTKARASSIK WW r United States Patent MEANS FUR REMOVENG N QN-CQNDENSIELE GASES E i-RUM BUILER FEEDWATER IN A PGWER PLANT Joseph F. Sebald, Bloomfield, and Igor J. Kmassik, Maplewood, N1, assignors to Worthington orporation, Harrison, N.J., a corporation of Delaware Filed May 7, 1962, Ser. No. 192,705 ill Llaims. {CL oil-67) This invention relates to power plants and more particularly to means associated with a surface condenser of the power plant acting to remove the non-condensible gases present in the boiler feedwater.
The need for the removal of air and other non-condensibie gases from boiler feedwater has come about as a direct result of the progress that has been made in boiler and turbine design in the last two or three decades. Prior to that time boiler pressures and ratings were comparatively low and there was, therefore, no need for elaborate water treatment. When boiler pressures were stepped up and boiler ratings increased, it was found that boiler tubes failed more rapidly. In addition the formation of scale prevented the rapid transfer of heat from the tube to the water and increased the tube temperature causing it to fail.
The matter of proper removal of air and non-condensible gases has been mentioned previously in the prior art and the approaches disclosed for providing deaerated feedwater have served to reduce the problems resulting from corrosion in the boiler of the power plant.
One such prior art arrangement disclosed provides means in a condenser coacting therewith to provide an arrangement for removing non-condensible gases such as oxygen.
Specifically exhaust steam passed into the condenser was channeled to act against the condensate therein to provide the hi her degree of deaeration required in high pressure and temperature installations.
On startup of these prior art units a steam source was provided to reduce the partial air pressure in the condenser and to act to remove noncondensibles from the condensate.
It was found that these prior art arrangements were impractical in certain respects and especially during startup and failed to provide condensate of required purity for return to the boiler. Such a system is shown in US. Letters Patent 1,962,183.
More particularly this auxiliary steam source rather than effectively functioning to remove non-condensibles in a local area in the condenser merely blanketed the condenser in these areas and failed to achieve its intended function.
The present invention overcomes the foregoing objections by associating means with a condenser which localize the auxiliary steam supply to appreciably increase the deaeration qualities of the unit and further provides an arrangement for returning condensate collected in the storage hotwell through the localized area for removal of the non-condensibles present therei Accordingly, it is an object of this invention to provide optimum removal of air and non-condensible gases in the boiler feedwater of a power plant during all conditions of operation including startup and shutting down.
It is a further object to provide an improved condenser that is extremely compact and will accordingly be applicable in a system confronted with space limitations.
It is another object to overcome the objections present in prior type systems and generally mentioned hereinabove.
According, with the foregoing in mind applicants provides means for removing non-condensible gases includ- 3,151,461 Patented Dot. 6, 1964 ing a recirculating means whereby feedwater collected in the storage hotwell is recirculated through a deaeratorlike arrangement and further provides a steam source to said deaerator-like arrangement which acts to remove these non-condensible gases during startup and until such time that the turbine is at normal operating pressures.
Other objects and advantages of the invention including the basic design and the nature of the improvements thereon will appear from the following description taken in conjunction with the following drawings, in which:
FIGURE 1 is a front view of a condenser turbine system partly in section and showing the invention contemplated herein.
FIGURE 2 is a diagrammatic view of a modified arrangement of the system shown in FIGURE 1.
Referring more particularly to FIGURE 1 of the drawings, there is shown a condenser, generally designated 1, and comprising a shell including a plural set of condensing tubes 3 and 4 disposed in the upper portion of the shell.
As is well known a source of cooling water is passed through the tubes to condense the exhaust steam passed into the condenser from the turbine 5 mounted in any convenient fashion thereon. The condensed feedwater is collected in a collecting hotwell 6 formed beneath the condensing tubes. Collecting hotwell 6 is shown as comprising a substantially horizontal tank-like arrangement 7 having a U-shaped central portion 8.
Mounted to the U-shaped portion of the collecting hotwell is the means for removing non-condensib-le gases, generally designated 9, and shown by way of example as a deaerator. The deaerator as is well known is provided with horizontal trays 2t) and a baffle or like arrangement 11 for directing feedwater over the trays to break up the water in droplets so that more complete removal of the air and non-condensible gases will take place.
Removal of non-condensible gases from the feedwater in the means 9 is provided by extracting steam from turbine 5 through line 10 which is centrally disposed in the condenser and connected to the means for removing non-condensible gases.
In this fashion condensed feedwater from the collecting hotwell 6 can be passed therefrom into the means for removing non-condensible gases with the provision of a transfer pump 19. Condensed water is passed from hotwell 5 through line 12 which may include steam ejectors 21' or other applicable heat exchangers, to the deaerator 9.
Accordingly, deaerated feedwater will be collected in the storage means 13 located at the bottom portion of the shell 2 and passed by condensate pump 14 to the boiler of the power plant.
As will be evident from the foregoing, and particularly during startup, it is possible to pass collected water from storage means 13 to the boiler through condensate pump 24. However, the feedwater collected in the storage well would not be of the required degree of deaeration and accordingly would tend to cause corrosion in the boiler and boiler feed system.
Since the turbine requires a certain run-in time before steam or" proper temperature and pressure can be provided through line 10 to the deaerator, it is imperative that an alternative arrangement be fashioned to provide means for initially treating feedwater during the startup of the arrangement.
With the foregoing in mind applicants provide a recirculating arrangement, generally designated 12, and shown as a bypass, line 5 having valves 16' and 1.6" respectively disposed therein which pass feedwater in the hotwell 13 to the collecting means 6 or deaerator 9 in any convenient proportion. At the same time pump 19 can be started to pass fluid in the collecting means 6 to the deaerator 9. Removal of non-condensible gases from the water passed through the deaerator 9 is accomplished with the provision of a conduit 22' which is connected to an auxiliary steam supply and therefore permits the passage of the steam as desired through the storage means 13 up through the deaerator 9 to act on the water to provide the proper degree of deaeration.
Removal of the non-condensible gases is accomplished by the incorporation of a vent means 17 which discharges into the condensing portion of the condenser and with the provision of a valve 18 in extraction line 10 it will be evident that non-condensible gases and auxiliary steam are precluded from flowing into the turbine during startup and when the initial phase of deaeration is taking place.
As the usual venting arrangement will be associated with the main condenser all of the attributes of a conventional vent condenser can be taken advantage of.
As will be evident to the skilled technician in this art, control of the initial phase of deaeration can be conveniently tied into the control room of a power plant, or manually accomplished by simply closing down valve 16' and/ or 16 and valve 16 as soon as indicators show that turbine extraction pressure and temperature that is re quired for deaeration has been reached. It is clear from FIGURE 1 that recirculation can be accomplished directly to the deaerator 9 by opening valve 16' and closing valves 16 and 16".
The operation of the cycle shown and the manner in which it provides treated feedwater in accordance with the cycle illustrated in FIGURE 1 will be evident to one skilled in the art from the foregoing description and it is not believed that the operation thereof need be described in further detail.
The form of the invention shown in FIGURE 2 diftors in some degree from the form shown in FIGURE 1 but the principles of construction and the general principles of operation are similar. This form of the invention includes an additional condenser and is adapted to operate in accordance with the principles contemplated herein with this additional condenser.
In this form of the invention plural condensers 21 and 22 are connected by conduits 23 and 24 to the turbine exhaust.
Each condenser has a collecting hotwell Z and 26 arranged beneath the condensing portion of the condenser to receive condensed steam therefrom. As is evident from FIGURE 2 and in order to provide the compact arrangement desired, the storage hotwell 27 is disposed in a trapezoidal-type tank which is spaced between the condensers 21 and 22 and disposed beneath the turbine 28. The means for removing non-condensible gases 29 is disposed in the upper portion of the shell of the storage hotwell 27. In this fashion water can be pumped by transfer pumps 34) and 31 from the collecting hotwells to the means 29 and passed therethrough in heat exchange relation with steam supplied to the storage hotwell and flowing upwardly through the means 29 in order to remove the air and non-condensible gases from "the feedwater. The treated feedwater can then be passed by condensate pump 31 tothe boiler of the power plant. During normal operation steam is supplied to the means 29 from extraction line 32 which is substantially centrally disposed in the above described arrangement.
In order to overcome the objections mentioned hereinabove during startup, an auxiliary steam source is provided for and steam therefrom is passed to the storage hotwell 27 through conduit 33. In this fashion it will be evident that steam for passage in counterflow relation with feedwater is provided when the temperature and pressure of the turbine exhaust is or has not yet reached required conditions. In similar fashion as was described in connection with FIGURE 1 feedwater collected in storage hotwell 27 is passed to the collecting hotwells through recirculation means or bypass line 34 having valving 35' and 35 and closing valves 35" and 35" conveniently disposed to preclude flow to the boiler and permit flow to the collecting hotwells or in any convenient proportion to deaerator 29 as desired by the operator. In this fashion water collected in the storage well can be first treated by passing same to the collecting hotwell and through the transfer pump to the means 29 for deaeration before this feedwater is passed to the boiler.
If required, in operation fluid can be circulated directly to the deaerator through lines 36 and 37 connected to lines 38 and 39 by closing valves 35 and 35 and opening valves 35" and 35'.
Although this invention has been described with reference to specific cycles and apparatus, it will be appreciated that a wide variety of changes may be made within the ability of one skilled in the art without departing from the scope of this invention. For example, some of the components of the apparatus may be reversed, certain features of the invention may be used independently of others, and equivalents may be substituted for the apparatus, all within the spirit and scope of the invention as defined in the appended claims.
What is claimed is: i
I. A condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting means, storage means, and means for removing non-condensible gases arranged in how circuit relation so that exhaust from said turbine is passed through said condensing means, to said collecting means, and through said means for removing non-condensible gases before being passed to said storage means; pump means connected to said storage means at one end and to the power plant at the other end to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing noncondensible gases to act on feedwater passing therethrough, recirculating means interconnecting said storage and collecting means and operative for a predetermined period of time to return feedwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of steam whereby steam acts on the feedwater passing through said means for removing non-condensible gases during startup of said turbine to provide an initial source of deaerated feedwater for the power plant, and means in the extraction line precluding flow into said turbine during the startup period.
2. A condenser including means for removing non condensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting ieans, storage means, and means for removing non-condensible gases arranged in flow circuit relation so that exhaust from said turbine is passed through said condensing means, to said collecting means, and through said means for removing non-condensible gases before being passed to said storage means; pump means connected to said storage means at one end and to the power plant at the other end to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough; bypass means interconnecting said pump means to said collecting means and operative for a predetermined period of time to return fecdwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of auxiliary steam whereby steam is passed to said means for removing non-condensible gases to act on feedwater' passing therethrough during startup of said turbine to provide an initial source of deaerated feedwater for the power plant, and valve means in the extraction line precluding flow into said turbine during the startup period.
3. A condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine; said condenser having condensing means, collecting means, storage means, and means for removing noncondensible gases, said means for removing non-condensible gases disposed between said collecting means and said storage means to preclude flow from said collecting means to said storage means other than through said means for removing non-condensible gases, a first pump means connected to said collecting means at one end and to said means for removing non-condensible gases at the other end to pass feedwater from said collecting means through said means for removing non-condensible gases, a second pump means connected in said condenser and interconnecting said storage means to the power plant to supply feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flow flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough, bypass means interconnecting said second pump means to said collecting means and operative for a predetermined period of time to return feedwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of auxiliary steam whereby steam is passed to said means for removing non-condensible gases to act on the feedwater passing therethrough for removing non-condensible gases from said feedwater during startup of said turbine to provide an initial source of deaerated feedwater for the power plant, and valve means in the extraction line precluding flow into said turbine during the startup period.
4. The combination claimed in claim 3 wherein said condensing means is disposed at the top portion of the condenser, the storage means disposed at the bottom portion of the condenser, and the collecting means disposed between said condensing means and storage means and said collecting means including said means for removing noncondensible gases.
5. The combination claimed in claim 4 wherein the extraction line and said means for removing non-condensible gases are centrally disposed in said condenser to coact in providing optimum removal of non-condensible gases from the boiler feedwater.
6. The combination claimed in claim 3 wherein said condensing means comprises a first and second condenser each having a collecting means arranged at the bottom portion thereof, each of said collecting means including a pump means connected to said means for removing noncondensible gases, and said storage means being disposed between the first and second condensing means and beneath the turbine.
7. The combination claimed in claim 6 wherein said eans for removing non-condensible gases is centrally disposed in said combination to coact in providing optimum removal of non-condensible gases with the extraction line from said turbine.
8. A condenser including means for removing noncondensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine, said condenser comprising a shell having an upper portion and a lower portion, a condensing means comprising a nest of tubes arranged in the upper portion, a substantially horizontal collecting means disposed beneath said condensing means and to collect steam condensed by said tubes, a storage means disposed beneath said collecting means and at the bottom portion of said shell, said means for removing non-condensible gases disposed centrally in said condenser and connected to said collecting means, a transfer pump connected to said collecting means and said means for removing non-condensible gases to pass feedwater of said collecting means to said means for removing non-condensible gases, a condensate pump connected to said storage means at one end and to said power plant at the other end to supply feedwater thereto, and extraction line centrally disposed in said condenser and interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough, a bypass means interconnecting said condensate pump to said collecting means and operative for a predetermined period of time to return feedwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of auxiliary steam whereby steam is passed to said means for removing non-condensible gases to act on 'the feedwater passing therethrough during startup of said turbine to provide an initial source of deaerated feedwater for the power plant, and valve means in the extraction line precluding flow into said turbine during the startup period.
9. The combination claimed in claim 8 wherein said means for removing non-condensible gases is centrally disposed in said condenser.
10. A first and second condenser includingmeans for removing non-condensible gases from boiler feedwater in a boiler feed system of a power plant including in combination, a turbine, said turbine having plural exhaust outlets, means for connecting said first and second condensers to said exhaust outlets of said turbine, each of the condensers comprising a shell including a tube nest at the upper portion and a collecting means at the lower portion, storage means disposed between said first and second condensers, said means for removing non-condensible gases connected to said storage means and at the upper portion thereof, a transfer pump means connected to each of said collecting means at one end and to said means for removing non-condensible gases at the other end to pass feedwater from said collecting means to said means for removing non-condensible gases, at condensate pump connected to said storage means at one end and to said power plant at the other end to pass feedwater thereto, an extraction line interconnecting said turbine and said means for removing non-condensible gases whereby steam flows from said turbine to said means for removing non-condensible gases to act on feedwater passing therethrough, bypass means interconnecting said condensate pump to said collecting means and operative for a predetermined period of time to return feedwater from said storage means to said collecting means, conduit means connecting said means for removing non-condensible gases to a source of auxiliary steam whereby steam is passed to said means for removing non-condensible gases to act on feedwater passing there through for removing non-condensible gases during startup of said turbine to provide an initial source of deaerated feedwater for the power plant, and valve means in the extraction line precluding flow into said turbine during the startup period.
References Cited in the file of this patent UNITED STATES PATENTS 1,353,855 Scanes Sept. 28, 1920 1,372,409 Ehrhart Mar. 22, 1921 1,628,737 Oliver May 17, 1927 1,962,183 Ehrhart June 12, 1934 2,542,873 Karr Feb. 20, 1951 2,661,190 Kirkpatrick Dec. 1, 1953 2,663,547 Evans et a1. Dec. 22, 1953 2,848,197 Evans et al Aug. 19, 1958 2,916,260 Worn et al. Dec. 8, 1959 2,939,685 Worn et al. June 7, 1960 2,946,571 Droescher July 26, 1960

Claims (1)

1. A CONDENSER INCLUDING MEANS FOR REMOVING NONCONDENSIBLE GASES FROM BOILER FEEDWATER IN A BOILER FEED SYSTEM OF A POWER PLANT INCLUDING IN COMBINATION, A TURBINE; SAID CONDENSER HAVING CONDENSING MEANS, COLLECTING MEANS, STORAGE MEANS, AND MEANS FOR REMOVING NON-CONDENSIBLE GASES ARRANGED IN FLOW CIRCUIT RELATION SO THAT EXHAUST FROM SAID TURBINE IS PASSED THROUGH SAID CONDENSING MEANS, TO SAID COLLECTING MEANS, AND THROUGH SAID MEANS FOR REMOVING A NON-CONDENSIBLE GASES BEFORE BEING PASSED TO SAID STORAGE MEANS; PUMP MEANS CONNECTED TO SAID STORAGE MEANS AT ONE END AND TO THE POWER PLANT AT THE OTHER END TO SUPPLY FEEDWATER THERETO, AN EXTRACTION LINE INTERCONNECTING SAID TURBINE AND SAID MEANS FOR REMOVING NON-CONDENSIBLE GASES WHEREBY STEAM FLOWS FROM SAID TURBINE TO SAID MEANS FOR REMOVING NONCONDENSIBLE GASES TO ACT ON FEEDWATER PASSING THERETHROUGH, RECIRCULATING MEANS INTERCONNECTING SAID STORAGE AND COLLECTING MEANS AND OPERATIVE FOR A PREDETERMINED PERIOD OF TIME TO RETURN FEEDWATER FROM SAID STORAGE
US192705A 1962-05-07 1962-05-07 Means for removing non-condensible gases from boiler feedwater in a power plant Expired - Lifetime US3151461A (en)

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Cited By (8)

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US3406749A (en) * 1967-02-02 1968-10-22 Ingersoll Rand Co Steam manifold for condensers
US3698476A (en) * 1970-12-31 1972-10-17 Worthington Corp Counter flow-dual pressure vent section deaerating surface condenser
US3872920A (en) * 1973-05-28 1975-03-25 Tokyo Shibaura Electric Co Descaling system for the cooling tubes of a steam condenser
US4517805A (en) * 1983-05-04 1985-05-21 Niagara Blower Company Vacuum producing condenser
US4534320A (en) * 1984-03-01 1985-08-13 Westinghouse Electric Corp. Method for determining the amount of dissolved oxygen from above and below water level air leakage in a steam power plant
US4592419A (en) * 1983-02-07 1986-06-03 Hitachi, Ltd. Condenser
US4658589A (en) * 1986-03-21 1987-04-21 Sundstrand Corporation Non-condensible ejection system for closed cycle Rankine apparatus
US20060151154A1 (en) * 2003-04-24 2006-07-13 Zoltan Szabo Combined air cooled condenser

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US1353855A (en) * 1915-11-01 1920-09-28 British Westinghouse Electric Steam-condenser apparatus
US1372409A (en) * 1917-11-21 1921-03-22 Westing House Electric & Mfg C Condenser
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US2542873A (en) * 1948-06-18 1951-02-20 Ingersoll Rand Co Multistage deaerating and reheating hot well for steam condensers
US2661190A (en) * 1953-01-29 1953-12-01 Stone & Webster Eng Corp Condenser with subcooler and venting means
US2663547A (en) * 1949-05-25 1953-12-22 Lummus Co Condenser deaerator
US2848197A (en) * 1955-09-02 1958-08-19 Lummus Co Condenser
US2916260A (en) * 1955-12-09 1959-12-08 Lummus Co Condenser deaerator
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US1353855A (en) * 1915-11-01 1920-09-28 British Westinghouse Electric Steam-condenser apparatus
US1372409A (en) * 1917-11-21 1921-03-22 Westing House Electric & Mfg C Condenser
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US1962183A (en) * 1930-12-06 1934-06-12 Raymond N Ehrhart Hot well
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US2663547A (en) * 1949-05-25 1953-12-22 Lummus Co Condenser deaerator
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US2946571A (en) * 1959-06-26 1960-07-26 C H Wheeler Mfg Co Condensers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406749A (en) * 1967-02-02 1968-10-22 Ingersoll Rand Co Steam manifold for condensers
US3698476A (en) * 1970-12-31 1972-10-17 Worthington Corp Counter flow-dual pressure vent section deaerating surface condenser
US3872920A (en) * 1973-05-28 1975-03-25 Tokyo Shibaura Electric Co Descaling system for the cooling tubes of a steam condenser
US4592419A (en) * 1983-02-07 1986-06-03 Hitachi, Ltd. Condenser
US4517805A (en) * 1983-05-04 1985-05-21 Niagara Blower Company Vacuum producing condenser
US4534320A (en) * 1984-03-01 1985-08-13 Westinghouse Electric Corp. Method for determining the amount of dissolved oxygen from above and below water level air leakage in a steam power plant
US4658589A (en) * 1986-03-21 1987-04-21 Sundstrand Corporation Non-condensible ejection system for closed cycle Rankine apparatus
US20060151154A1 (en) * 2003-04-24 2006-07-13 Zoltan Szabo Combined air cooled condenser
US7946338B2 (en) * 2003-04-24 2011-05-24 Egi-Contracting Engineering Co., Ltd. Combined air cooled condenser

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