KR101827879B1 - Steam Boiler's flash steam Recovery/feed Water Supply System used of the device for phase conversion - Google Patents

Abstract

The present invention relates to a system to recover reevaporated steam and supply water of a steam boiler using a phase converter. According to the present invention, the system comprises: the steam boiler having a boiler water level detection unit installed inside to connect with a boiler water level transfer cable and having a boiler outlet stop valve connected to a steam supply pipe in the outside; one or more steam using facilities connected to the steam supply pipe, having a steam using facility inlet stop valve installed in an inlet, and having a steam trap installed in an outlet; a condensate recovery unit installed one side of the steam using facility, wherein steam is placed in an upper part of a condensate recovery tank and water is placed in a lower part thereof; a condensate transfer pump installed on one side of the condensate recovery unit and transferring condensate to one side of the phase converter; the phase converter removing a pressure inside the condensate recovery tank and converting absorbed materials (reevaporated steam) of an operational material (a transfer amount of condensate) into the water to discharge the water as mixed water; a buffering tank to temporarily store the mixed water; and a water supply pump, a reverse water supply valve, and a water supply stop valve disposed between the buffering tank and the steam boiler. As such, fuel saving and heating efficiencies of a water recovery/supply system are enhanced to largely improve quality and productivity of a product, thus being able to lower manufacturing costs.

Description

{Steam Boiler's flash steam recovery / feed water supply system used for the device for phase conversion}

An embodiment of the present invention relates to a steam boiler condensate and a flash steam recovery / water supply system, and more particularly, to a steam boiler recovery / water supply system, So that the production cost can be greatly reduced.

As will be appreciated, the condensate recovered in the condensate recovery tank in the process of using steam as an indirect heating source for the steam plant is generally recovered in excess of 100 ° C, which is the atmospheric pressure boiling point of water.

The condensate temperature is dependent on the steam operating pressure of the steam plant and is typically recovered to a temperature that is 15 ° C lower than the saturation temperature of the steam operating pressure when discharged through the steam trap.

That is, the condensate pressure of the condensate recovery tank is maintained at 2.5 to 4.0 kg / cm 2 g when the steam use pressure is 4.0 to 7.0 kg / cm 2 g.

In addition, the steam produced in the steam boiler varies depending on the transfer distance and the heat loss loss when reaching the steam using equipment through the steam supply line, but generally a pressure drop of 0.5 kg / cm 2 g or more occurs.

When the steam use pressure of the steam using equipment is 5.0 ~ 7.0 kg / ㎠g, the saturated water temperature is 158.08 ~ 169.61 ℃, and since the condensate discharged after use is usually lower by about 15 ℃, it is about 143.08~154.61 ℃, The pressure of the flash steam is about 3.1 ~ 5.4kg / ㎠g, and the specific volume is 0.7053 ~ 0.3549㎥ / kg.

Also, the amount of re-evaporated steam (weight) re-evaporated in the condensate is about 2.0%. The generation rate of the re-evaporated steam can theoretically be calculated by dividing the difference of the saturation water enthalpy before and after the recovery of the condensed water by the heat of evaporation at the re-evaporation generation pressure. However, while recovering to the condensate recovery tank through the steam trap, heat loss is generated in the condensate, and the ratio is generally about 3.0%. Therefore, when the condensate of 7 atm and 169.61 ° C starting from the steam trap is cooled to about 5.0 ° C by the heat radiation, the temperature drop of 5.0 ° C is due to the heat radiation loss even if the temperature difference before and after the recovery is 15 ° C The temperature difference of the saturating water which is converted into the evaporation heat of the flash steam is about 10 ° C, so that the saturation water enthalpy is about 10.0 kcal / kg. Also, the condensate whose temperature has dropped by 15 ° C is changed to the condensation water of 4.3 atmospheric pressure. Therefore, the re-evaporation steam generation rate of the recovered condensate is about 10 kcal / kg / 500.6 kcal / kg * 100 = 2.0%.
Therefore, the volume conversion amount is 1.0840 ~ 1.1029m3 / hour when the discharge amount (weight) of the saturated pressure of 3.1 ~ 5.4kg / ㎠g is 1,000kg / hour. The re-evaporated steam evaporated at this time is 1,000 kg / hour * 0.02 * (0.7053-0.3549 m 3 / kg) = 14.1 ~ 7.0 m 3 / hour.

It can be seen that the amount of condensed water discharged is 1.0840 ~ 1.1029m3 / hour, the amount of re-evaporated steam (m3) is 14.7 ~ 7.1㎥ / hour, and the amount of re-evaporated steam (volume) is about 10 times of the amount of condensed water discharged (volume).

That is, when the evaporation steam amount of 10.0 m 3 is removed every 1.0 m 3 of the condensed water is discharged, the re-evaporated steam generated in the condensate recovery tank is mostly removed, so that the internal pressure rise does not occur.

Conventionally, a condensate pumping system or an Ogden pump system has a condensed water transfer tank installed in a hermetic manner, and an atmospheric vent pipe is installed on the condensate pumping tank, thereby discharging a part of the re-evaporated steam to the atmosphere. But the heat loss of some flash steam is inevitable.

In addition, conventionally, a pump trap system is a system in which a condensate transferring tank is hermetically closed and a high pressure steam is introduced into the tank when the condensation water reaches a certain water level, and the condensed water is transferred to the tank. Condensate discharge failure occurs because the differential pressure of discharge of condensate from the equipment used becomes small.

Conventionally, in the case of a TVR (thermal vapor recompressor) system, it is necessary to install an ejector in case of fluctuation in the amount and pressure of the driving steam flowing into the ejector due to the fluctuation of the production facility, Operation costs are excessive.

Conventionally, a condensate and a steam recovery / supply device of a non-trap type steam generating system pumped the condensate of a condensate collection tank to a steam of a steam tank, and steam is compressed by the condensed water, If the condensed water pumped by the pump is directly supplied to the steam of the steam tank, the steam is swirled in the steam tank, and vibration is generated in the steam tank, so that the steam tank may be damaged. The capacity of the condensate reservoir tank is about the same as the capacity of the steam reservoir, so it has a capacity of less than 30 liters. Therefore, the condensate water in the condensate reservoir tank must have a capacity of not more than 30 liters. And the pump is started is repeatedly operated in a very short period of time In order to prevent the cavitation phenomenon of the condensate pump, it is necessary to provide a through hole in the condensate collection tank and a steam regeneration valve is installed in the steam recovery pipe, When the steam is compressed by the condensed water by the driving of the pump, the steam regeneration valve is opened by the pressure so that the compressed steam passes through the steam return pipe, and the flow path is closed by the condensed water. And a steam tank, and a valve should be installed in the vent pipe with a spring.

The above-mentioned pump cavitation prevention device, steam transfer prevention device, flow path opening / closing device, and valve spring installed in the vent pipe are necessary. Therefore, there is a possibility of failure and the manufacturing and maintenance of the component Cost is high. In addition, since the condensed water under pressure is repeatedly and continuously operated by the direct compression force on the steam, the durability of the components may be lowered and the service life may be shortened.

In order to solve the above-mentioned problems, the following prior art documents have been developed in the related art. However, the above-mentioned problems of the prior art can not be solved at all.

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"Steam System Data Book" Publisher: Spirax Sarco A.1.7 Calculation of re-evaporated steam generation (pages A11, A12)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steam boiler, a steam utilization facility, a condensate recovery unit, a condensate transfer pump, a phase change unit, a buffer tank and a water supply pump, The second object of the present invention is to provide a steam boiler which is capable of indirectly heating the steam of a steam boiler by discharging condensate and re-evaporated steam collected in the condensate return tank to the atmosphere without re- The third objective is to convert the flash steam to water to prevent the expansion of the volume inside the condensate return tank, thereby preventing the pressure rise, thereby discharging the condensed water smoothly from the steam using equipment The fourth objective is to ensure that the smooth discharge of condensate is achieved by the use of a uniform temperature fluid The possibly to improve the heating efficiency by providing the condensate and flash steam recovery / supply system in a steam boiler to significantly improve the quality and productivity of the product to lower the cost of production.

In order to achieve the above object, the present invention provides a steam boiler comprising a steam boiler in which a boiler water level sensing unit connected to a boiler water level transmission cable is installed, and a boiler outlet stop valve is connected to a steam supply pipe outside; At least one steam-using facility connected to the steam supply line, the steam-use equipment inlet stop valve at the inlet and the steam trap at the outlet; At least one condensate recovering part provided at one side of the steam using facility, the condensate recovering tank having steam at the upper part thereof and water at the lower part thereof; A water feed pump for supplying water to the steam boiler through a phase converter, a water feed check valve, a water stop valve, and a reboiler, which are provided at one side of the condensate collector, At least one phase change device for removing the pressure inside the condensate return tank and for mixing and discharging the driving substance (condensed water feed amount) and the inhaled substance (re-evaporated steam) by causing the steam to flow into the condensate return tank; And a water supply check valve and a water supply stop valve are interposed between the phase converter and the steam boiler, and a redistribution steam recovery / water supply system of the steam boiler using the phase converter.

The present invention also relates to a steam boiler in which a boiler water level sensing unit to which a boiler water level transmission cable is connected is installed inside and a boiler outlet stop valve is connected to a steam supply pipe outside; At least one steam using facility connected to the steam supply line, the steam use facility entrance stop valve at the inlet and the steam trap at the outlet; At least one or more condensate recovery units provided on at least one side of the steam using facility, the condensate recovery tank having steam at the upper part thereof and water at the lower part thereof; A condensate transfer pump provided at one side of the condensate recovery unit for injecting water in the lower portion of the condensate recovery unit to one side of the state conversion unit and a reboiler for converting the reboiled steam into water and being absorbed in the condensed water to be mixed water, And at least one phase-change device for mixing and discharging the driving material (condensed water feed amount) and the suction material (re-evaporated steam); A buffer tank provided at one side of the phase converter for storing mixed water in which condensed water and re-evaporated steam are mixed; And a water supply pipe between the buffer tank and the steam boiler includes a water supply pump, a water supply check valve, and a water supply stop valve, and a redistribution steam recovery / water supply system of the steam boiler using the phase change device.

According to another aspect of the present invention, there is provided a steam boiler comprising: a steam boiler; Collecting the condensed water discharged after use from the steam using facility in a condensate recovery tank; Separating the condensed water into upper steam and lower water of the condensate recovery tank, respectively; When the water level of the water in the condensate water collection tank is in the set range, the condensate water is detected by the condensate water level sensing unit and converted into an electric signal to start the condensate water conveyance pump through the condensate water level transmission cable; Injecting the condensed water discharged from the condensate transfer pump into a phase converter; Sucking the flash steam of the condensate recovery tank into the phase converter; A step of allowing the re-evaporation steam to be sucked into the condensed water in the phase converter to cause the inhaled material to be phase-converted into water to be mixed water; Collecting the mixed water temporarily in the buffer tank; if the level of the steam boiler is in the set range, the boiler water level sensing unit senses it, converts it into an electric signal, transmits it to the water supply pump through the boiler water level transmission cable, And supplying the mixed water of the buffer tank to the steam boiler by operating the steam boiler in the steam boiler.

As described in detail above, the present invention includes a steam boiler, a steam using unit, a condensate return unit, a condensate transfer pump, a phase change unit, a buffer tank, and a feed pump.

In the process of using the steam of the steam boiler as an indirect heating source of the steam using facility, the present invention according to the technical structure is to supply the condensed water and the flash steam collected in the condensate recovery tank to the boiler without discharging it to the atmosphere.

According to the present invention, the re-evaporation steam is converted into water and absorbed into the feed water to supply water to the boiler so that the re-evaporation steam is recycled and the pressure in the condensate return tank is prevented from rising so that the condensed water is smoothly discharged from the steam using equipment.

In addition, the present invention absorbs all the re-evaporating steam generated in the condensate water recovery tank and absorbs it, thereby saving fuel.

In addition, according to the present invention, since the internal pressure of the condensate water recovery tank is not increased, the pressure difference between the steam using equipment and the condensate water recovery tank is kept constant, so that the condensed water is discharged smoothly.

In addition, according to the present invention, the smooth discharge of the condensed water makes it possible to maintain the uniform temperature of the heat transfer surface of the steam using equipment, thereby improving the heating efficiency.

The present invention is a very useful invention that greatly reduces the production cost by greatly improving the quality and productivity of the product due to the fuel saving and the heating efficiency improvement of the collection / supply system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a steam reforming steam generator of a steam boiler using a phase-
Fig. 1 is a schematic view of a first embodiment of a water / water supply system; Fig.
2 is a view showing an installation state of an ejector applied to the present invention,
(a) shows a state in which only one ejector is installed,
(b) is a state in which a plurality of ejectors are installed.
FIG. 3 is a graph showing the relationship between the steam evaporation time of the steam boiler using the phase-
Fig. 2 is a schematic view of a second embodiment of a water / water system; Fig.

The re-evaporative steam recovery / water supply system of the steam boiler using the phase converter applied to the present invention is configured as shown in FIGS. 1 to 3.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Also, the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of explanation, and the present invention is not necessarily limited to those shown in the drawings.

The present invention consists of the first embodiment of Fig. 1 and the second embodiment of Fig.

First, the first embodiment of the present invention is configured as follows. (Fig. 1)

A boiler water level sensing unit 110 is connected to the boiler water level transmission cable 113 and a steam boiler 100 connected to the steam supply pipe 112 is connected to the boiler outlet stop valve 111.

The present invention also relates to a steam turbine system including at least one steam using facility 200 connected to the steam supply pipe 112 and equipped with a steam using facility inlet stop valve 210 at an inlet thereof and a steam trap 220 at an outlet thereof, .

In addition, the present invention is provided at one side of the steam using facility 200, and at least one condensate recovering part 300 having steam at the upper part of the condensate recovery tank 310 and water at the lower part thereof is provided.

In addition, the present invention is provided at one side of the condensate water collecting unit 300, and the water in the lower part of the condensate water collecting unit is supplied to the steam boiler (not shown) through the phase changer 400, the water supply check valve 410 and the water supply stop valve 411 100), and the re-evaporation steam is converted into water and mixed with the condensed water to be recovered, and the pressure inside the condensate return tank is removed, as well as the driving material (condensate transfer amount) and the inhaling material ) Are mixed and discharged.

The present invention is also applicable to a system for recovering and re-evaporating steam of a steam boiler using a phase converter including a water supply check valve 410 and a water supply stop valve 411 between the phase converter 400 and the steam boiler 100, Water supply system.

The second embodiment of the present invention is configured as follows. (Fig. 3)

A boiler water level sensing unit 110 is connected to the boiler water level transmission cable 113 and a steam boiler 100 connected to the steam supply pipe 112 is connected to the boiler outlet stop valve 111.

In addition, the present invention may be applied to at least one steam using facility 200, which is connected to the steam supply pipe 112, has a steam using facility inlet stop valve 210 at an inlet, a steam trap 220 at an outlet thereof, (200a).

The present invention further includes at least one condensate recovery unit 300 (300a) provided at one side of the steam using facility (200) 200a and having steam at the upper part of the condensate recovery tank 310 and water at the lower part thereof, And a condensate transferring pump 316 for injecting the water in the lower portion of the condensate returning unit to one side of the phase changer 400.

In addition, the present invention is provided at one side of the condensate collecting part 300 (300a) to absorb the re-evaporated steam into the condensed water, recover and use it, remove the pressure inside the condensate return tank, And at least one phase-change device 400 for mixing and discharging steam (re-evaporated steam).

The present invention further includes a buffer tank 500 provided at one side of the phase change device 400 and storing mixed water in which condensed water and re-evaporated steam are mixed.

The present invention is characterized in that the water supply pipe 511 between the buffer tank 500 and the steam boiler 100 is provided with a transfer pump or a water pump 510 including a water supply check valve 512 and a water supply stop valve 513 And a flash steam recovery / water supply system of a steam boiler using a conversion device.

Meanwhile, the phase-change device 400 according to the present invention may be used in a variety of devices such as an ejector, an injector, an eductor, a mixing nozzle mixer, and an in-line mixer It is preferable to be made of any one of them.

The condensed water recovery part 300 applied to the present invention is configured as follows.

That is, a condensate water level sensing unit 311 provided in the condensate water recovery tank 310 is provided.

The present invention is also provided with a re-evaporation steam stop valve 312 and a re-evaporation steam check valve 314 provided in the condensate recovery tank 310 and the inter-evaporation steam discharge pipe 313 between the phase change devices 400.

The present invention further includes a condensate feed pump 316 and a condensate check valve 317 connected between the condensate return tank 310 and one or more steam using facilities 400 having different discharge pressures of the condensed water.

The present invention further includes a condensate water level transmission cable 315 connected to the condensate water level sensing unit 311 and the condensate water conveyance pump 316.

In the present invention, one or more of the at least one steam using equipment 400 having different discharge pressures of condensed water is mixed with a driving material (condensate transferring amount) and an inhaling material (re-evaporating steam) to the steam boiler 100 or the buffer tank 500, A mixed water supply pipe 410 is provided.

In particular, the phase change device 400 applied to the present invention is configured as follows.

That is, as shown in FIGS. 2 (a) and 2 (b), in order to allow the condensed water transferred from the condensate transfer pump 316 to flow in series to the phase changer 400, And the steam discharged from the condensate recovery tank 310 may be sucked into the respective phase-change devices 400 in parallel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

It is to be understood that the invention is not to be limited to the specific forms thereof which are to be described in the foregoing description, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

The operation and effect of the condensed water and the flash steam recovery / water supply system and the control method of the steam boiler according to the present invention will be described as follows.

First, the present invention greatly improves the quality and productivity of products resulting from fuel saving and heating efficiency improvement of the collection / supply system, thereby greatly reducing the production cost.

To this end, the present invention includes a step of supplying the steam generated in the steam boiler 100 to at least one or more steam using facilities 200 and 200a.

Thereafter, collecting the condensed water discharged after being used in the steam using facility 200 (200a) is collected in the condensate collection tank 310.

And then the condensed water is separated into the upper vapor and the lower water of the condensate recovery tank 310, respectively.

If the level of the water in the condensate recovery tank 310 is within a predetermined range, the condensed water is detected by the condensed water level sensing unit 311, converted into an electrical signal, and supplied to the condensate transfer pump 316 through the condensate water level transmission cable 315 And is transported.

Subsequently, the condensed water discharged from the condensate transfer pump 316 is sucked into the phase converter 400.

And then sucking the flash steam of the condensate recovery tank 310 into the phase converter 400.

Subsequently, a step of sucking the suction material (re-evaporating steam) into the condensed water in the phase converter 400 and converting the suction material into water into phase water is converted into mixed water.

Finally, the mixed water is transferred to the steam boiler 100. When the water level of the steam boiler 100 is within the set range, the boiler water level sensing unit 110 senses it and converts it into an electric signal, And the mixed water is supplied to the steam boiler 100 through the operation of the water feed pump 510 to control the condensate of the steam boiler and the flash steam recovery / water supply system do.

In particular, in order to minimize the suction ratio of the phase-change device 400, the present invention performs the following operations.

That is, the pressure of the condensed water to be sent to the phase change device 400, the re-evaporation steam to be sucked into the phase change device 400, and the mixed water discharged from the phase change device 400 and transferred to the buffer tank 500 It is preferable that the condensed water is maintained in the same state so that a low operating pressure is additionally provided by the condensate transfer pump 316. Specifically, the operation pressure of the condensate transfer pump 316 is not less than one The difference between the maximum condensate discharge pressure and the minimum condensate discharge pressure of the steam using equipment.

Therefore, since the difference between the condensate suction pressure and the discharge pressure of the condensate transfer pump 316 is usually less than 20 m of the water head (water) pressure, the required suction head (water) of the condensate transfer pump 316 is very small, Can be made small.

Meanwhile, when a high-pressure driving material is ejected at a high speed from a small-diameter nozzle installed inside a closed body, the pressure energy is converted into kinetic energy and the pressure around the nozzle is lowered to a vacuum state So that the driving material and the inhaling material are mixed and discharged.

A phase converter (not shown) using the condensed water transferred from the condensate transfer pump 316 as the driving material and the re-evaporated steam discharged from the upper steam of the condensate recovery tank as the suction material by using the principle of the phase converter 400 400), the water as the phase change material of the flash steam is mixed with the condensed water, and the mixed water can be supplied to the steam boiler 100.

The pressure of the condensed water transferred to the phase change device 400, the re-evaporation steam sucked into the phase change device 400, and the mixed water discharged from the phase change device 400 and transferred to the buffer tank 500 The pressure expansion ratio of the condensed water transferred from the condensate transfer pump 316 to the phase change unit 400 is 1.0 and is sucked into the phase change unit 400 and mixed with the condensed water to be transferred to the buffer tank 500 The pressure compression ratio of the flash steam is also about 1.0. Therefore, the suction ratio (the amount of condensed water transferred / the amount of ash vaporized by steam) of the phase converter is maintained at about 1.0. This means that the amount of condensate transferred (volume) and the amount of ash vaporized vapor (volume) are maintained at the same level in the phase converter.

In the present invention, it is considered that the condensate recovery volume (volume) and the re-evaporation vapor amount (volume) are maintained at a similar level, and that the phase converter maintains the pressure of the driving substance, Volume / volume of the inhalation substance) is maintained at about 1.0.

Therefore, the re-evaporation steam (inhaling material) is converted to water and absorbed in most of the amount of condensed water (driving material) so that the volume can be reduced to less than 0.5%. The condensed water is absorbed into the condensed water through the phase change device 400 to recover the retained heat and the re-evaporated steam is removed to prevent a pressure rise inside the condensed water recovery tank, thereby preventing the condensed water from flowing from the steam using facility 200 to the condensed water recovery tank 310 So that it is smoothly discharged.

Further, the suction ratio of the phase-change device 400 increases as the ratio of the absolute pressure of the driving material to the absolute pressure of the suction material, that is, the expansion ratio becomes smaller, and the pressure compression ratio, which is the ratio of the absolute pressure of the mixed- The bigger it gets, the bigger it gets. The large suction ratio means that more driving material is required to suck the same amount of suction material than the suction material, and the operating performance of the phase converter is low.

In the meantime, in the first embodiment of FIG. 1 of the present invention, the number of the steam using facilities 200 is one or more, and the same steam use conditions (steam use amount and steam use pressure) When the discharge pressure of the discharged condensed water is the same, the condensate transfer pump 316 installed at the upstream side of the phase change unit 400 simultaneously performs the role of the condensate transfer and the feed pump. Therefore, The buffer tank 500 becomes unnecessary so that the condensate recovery tank 310 functions as well and the outlet pressure of the phase change device 400 is kept equal to the pressure of the steam boiler 100. If the pressure of the condensate return tank 310 is temporarily lowered, the suction ratio (the amount of condensed water transferred / the amount of re-evaporated steam inhaled) of the individual phase changer 400 may exceed 1.0 and the suction amount of the re-evaporated steam may become smaller, The number of the phase change devices 400 is set in series and the condensed water pressurized by the feed pump 510 sequentially passes through each of the phase change devices 400 in one line, 400 to suck the re-evaporated steam in parallel and suck it in the plurality of phase-change devices 400 to increase the suction amount of the entire re-evaporated steam. The mixed water that has passed through the final phase converter 400 is supplied to the steam boiler 100 through the water supply pipe 511, the water supply check valve 512, and the water supply stop valve 513.

The technical idea of the redistribution steam recovery / water supply system of the steam boiler using the conversion apparatus according to the present invention is that the same result can be repeatedly practiced. Particularly, by implementing the present invention as described above, It is worth protecting.

Description of the Related Art
100: Steam boiler
200: Steam using equipment
300: Condensate recovery unit
400: Phase Inverter
500: buffer tank

Claims (5)

A steam boiler in which a boiler water level sensing unit to which a boiler water level transmission cable is connected is installed inside and a boiler outlet stop valve is connected to a steam supply pipe outside;
At least one steam using facility connected to the steam supply line, the steam use facility entrance stop valve at the inlet and the steam trap at the outlet;
At least one condensate recovering part provided at one side of the steam using facility, the condensate recovering tank having steam at the upper part thereof and water at the lower part thereof;
A condensate transfer pump which is provided at one side of the condensate recovery section and serves also as a water supply pump for supplying water below the condensate recovery section to the steam boiler through a phase change device, a water supply check valve, and a water supply stop valve; At least one phase converter for removing the pressure inside the condensate recovery tank and for discharging the mixture of the driving material (condensed water transfer amount) and the suction material (re-evaporation steam) by mixing the condensed water and the mixed water; And
Wherein a water supply check valve and a water supply stop valve are provided between the phase converter and the steam boiler.
A steam boiler in which a boiler water level sensing unit to which a boiler water level transmission cable is connected is installed inside and a boiler outlet stop valve is connected to a steam supply pipe outside;
At least one steam using facility connected to the steam supply line, the steam use facility entrance stop valve at the inlet and the steam trap at the outlet;
At least one or more condensate recovery units provided on at least one side of the steam using facility, the condensate recovery tank having steam at the upper part thereof and water at the lower part thereof;
A condensate transfer pump provided at one side of the condensate recovery unit for injecting water in the lower portion of the condensate recovery unit to one side of the state conversion unit and a reboiler for converting the reboiled steam into water and being absorbed in the condensed water to be mixed water, And at least one phase-change device for mixing and discharging the driving material (condensed water feed amount) and the suction material (re-evaporated steam);
A buffer tank provided at one side of the phase converter for storing mixed water in which condensed water and re-evaporated steam are mixed; And
Wherein the water supply line between the buffer tank and the steam boiler includes a feed pump, a water supply check valve and a water stop valve.
The method according to claim 1 or 2,
The phase-
Wherein the at least one of the at least one of the at least one of the steam boiler and the at least one of the at least one steam boiler is a steam boiler using a phase change device comprising an ejector, an injector, an eductor, a mixing nozzle mixer, and a line mixer. Evaporation steam recovery / water supply system.

The method according to claim 1 or 2,
Wherein the condensate collecting unit comprises:
A condensate water level sensing unit provided inside the condensate water recovery tank;
A flash evaporation steam stop valve and a flash evaporation steam check valve provided in the steam exhaust pipe between the condensate recovery tank and the phase converter;
A condensate transfer pump and a condensate check valve connected between the condensate return tank and the phase converter;
A condensate water level transmission cable connected to the condensate water level sensing unit and the condensate water conveyance pump; And
And a mixed water supply pipe for mixing and discharging a driving material (condensed water feed amount) and a suction material (re-evaporated steam) to a steam boiler or a buffer tank at one end of the phase converter. Evaporative steam recovery / water supply system.
The method of claim 3,
The phase-
A plurality of condensed water conveyed from the condensate transfer pump are provided in series in the mixed water supply pipe so as to be introduced into the phase change device in series,
Wherein the steam discharged from the condensate recovery tank is sucked in parallel to the respective phase change devices.

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