KR101407484B1 - Steam heating with condensation-water recovery device - Google Patents

Abstract

The present invention relates to a condensate and re-evaporated steam recovery device using a self-controlled pump trap, comprising a boiler (10) generating steam of high temperature and high pressure; a steam recompressor (40) receiving the stem of high temperature and high pressure from the boiler, generating mixed steam by absorbing re-evaporated steam generated in condensate from a plurality of steam using units (30), and supplying the mixed steam to the plurality of steam using units; a plurality of self-controlled pump traps (50) recovering the condensate from the plurality of steam using units; a condensate recovery tank (60) finally collecting the concentrate in the plurality of self-controlled pump traps and supplying the collected condensate to the boiler; and a make-up water tank (90) receiving and storing the condensate in the condensate recovery tank and condensate generated in the self-controlled pump trap and supplying the stored condensate to the boiler. The condensate recovery tank and the make-up tank are made small so as to easily collects the condensate and reduce manufacturing costs. The condensate is prevented from being charged in the steam using part even when a condensate amount is changed due to a change in outside temperature of the steam using unit so as to continuously recover and recycle the condensate and increase steam usage efficiency. Energy is saved by not driving additional boilers using fuel even when a certain amount of the production of products manufactured in the steam using unit is increased.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a condensing water recovery apparatus,

The present invention relates to a condensate and flash steam recovery system, and more particularly, to recovering flash steam generated from condensed water and condensed water supplied to and used by at least one steam used section, The present invention relates to a condensate and ash vapor recovery apparatus using a self-controlled pump trap that minimizes heat loss and maximizes the recovery rate of condensate and flash steam, thereby increasing the efficiency of steam use and saving energy.

Generally, a heating apparatus using steam supplies heating steam to a steam use portion formed of a heat exchanger, collects condensed water generated by condensing the supplied steam, supplies it to the boiler, recovers the re-evaporated steam generated from the condensed water, A condensate and flash evaporation vapor recovery device is used which saves energy for generating water vapor and steam for re-supply to the use part.

As a prior art related to such a condensate and flash steam recovery apparatus, Korean Patent Publication No. 10-0898380 is known. This system includes a boiler 10 for forming high-temperature steam as shown in FIG. 1, a heating unit And a steam recompression control valve (110) which receives hot steam from the boiler and sucks the re-evaporated steam generated from the condensed water recovered from the heating unit to heat the first and second heating units, And a steam recovery unit 200 for recovering the condensed water discharged from the first and second heating units and collecting the re-evaporated steam generated in the condensed water, The steam recovery unit is formed of a closed circuit to recover the re-evaporation steam and all the condensed water, improve the energy use efficiency by utilizing the latent heat included in the condensed water, Invention is such that the generated effect of reducing the fuel consumption for.

However, the re-evaporation steam and condensate recovery apparatus of the prior art should be equipped with an evaporation vessel that stores condensed water based on the maximum amount of condensed water when the amount of condensed water generated in the heating unit using steam heat is not constant. The amount of condensed water generated in the heating part is reduced and the amount of re-evaporated steam generated from the condensed water is also reduced. As a result, the steam is supplied to the recompression control valve The amount of re-evaporated steam is reduced. Therefore, high-temperature steam must be supplied through the boiler in order to supply the steam at a temperature required by the heating unit, thereby increasing the fuel consumption for boiler drive.

Also, the prior art includes an evaporation vessel for recovering and storing the condensed water based on the quantity of condensed water generated in the heating unit. The steam supplied to the heating unit is condensed and generated according to changes in the outside temperature and the product production environment If the condensate quantity fluctuates and the condensate is excessively generated, the condensate can not be recovered in its entirety as the condensate exceeds the capacity of the evaporation vessel. At this time, the steam at a certain temperature supplied to the heating section is mixed with the condensate There is a problem that the steam temperature is lowered and the heating part can not be heated sufficiently.

If the steam of the temperature required by the heating unit is mixed with the condensed water and is not supplied at the set temperature, the product produced in the heating unit is defective and the condensed water must be discharged to the outside of the sealing circuit in order to prevent the defective product. As a result, the boiler needs to be supplemented with water cooled from the outside, so that water and fuel consumption are increasing.

That is, although the above-mentioned prior art has installed a device for recovering condensed water and ash vapor to save fuel and water, if the production amount of the product produced by the heating unit fluctuates or the amount of generated condensed water fluctuates, So that the amount of water and fuel consumed due to the generation of steam is rather increased, or product defects are generated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide an apparatus for continuously recovering condensed water generated in a steam using portion of a condensate and flash steam recovery apparatus, By reducing the size of the boiler, it is easy to recover condensate and re-evaporated steam, reduce the manufacturing cost of the apparatus, and recover the condensate while preventing the condensed water from being filled in the steam use section. The present invention is to provide a steam evaporation steam and condensate recovery device using a self-controlled pump trap that can save energy without further driving the steam trap.

In order to solve the above-mentioned problems, the condensed water and flash steam recovery apparatus using the self-controlled pump trap of the present invention includes a boiler for generating steam at high temperature and high pressure; A steam boiler compressor which is supplied with steam at a high temperature and pressure from a boiler and sucks re-evaporation steam generated from condensed water generated from a plurality of steam use sections to generate mixed steam and supplies the mixed steam to a plurality of steam using sections; A plurality of self-regulating pump traps for collecting condensed water in a plurality of steam use portions; A condensate recovery tank for collecting the condensed water from the plurality of self-controlled pump traps and supplying the collected condensed water to the boiler; And a replenishing water tank for supplying and storing the condensed water generated in the condensed water recovery tank and the condensed water generated in the self-controlled pump trap and supplying the stored condensed water to the boiler.

Wherein the plurality of degreasing bases compressors are formed by including a high pressure base material compressor, a medium pressure base material compressor, and a low pressure base material compressor, wherein the plurality of steam use parts include an intermediate pressure steam use part and a low pressure steam use part, The self-regulating pump traps are formed to include high-pressure steam self-regulating pump traps and low-pressure steam self-regulating pump traps.

Each of the steam pressurized compressors is supplied with high-temperature, high-pressure steam generated in the boiler at the motive side, and the mixed steam obtained by sucking the re-evaporated steam generated from the condensed water collected in the condensate recovery tank through the suction side of the high- Is supplied to the suction side of the medium pressure steam compressor, the mixed steam discharged from the medium pressure steam compressor is supplied to the medium pressure steam use portion, and the reboiler steam is sucked from the low pressure steam self-controlled pump trap through the suction side of the low pressure steam compressor Mixed mixed steam is supplied to the low pressure steam use part.

The high-pressure steam self-regulating pump traps and the low-pressure steam self-regulating pump traps include an upper tank for transferring and storing condensed water generated in the gaseous-medium compressor, and a lower tank at a lower portion of the upper tank, And the upper tank and the lower tank are connected to each other by a three-way valve.

A check valve is provided between the upper tank and the lower tank so that the condensed water does not flow back to the upper tank and a lower level tank is provided with a water level sensor for detecting the level of the condensed water that falls freely falling in the lower tank, When the sensor is installed and the pressure detected by the pressure sensor exceeds the reference value, an automatic pressure control valve that supplies the condensate to the makeup water tank should be connected.

The three-way valve connects the upper tank side, the boiler side and the lower tank, and the high-pressure steam of the boiler flows into the lower tank through the three-way valve or the condensed water of the upper tank can be introduced into the lower tank according to the level of the lower tank .

When the high-pressure steam flows into the lower tank through the three-way valve, the condensed water in the lower tank is transferred to the condensate recovery tank by the high-pressure steam supplied from the boiler. When the pressure in the lower tank becomes high, Since the high pressure steam of the lower tank is not supplied to the upper tank by the check valve installed between the upper tank and the lower tank without flowing the admissible water, the lower tank is kept at a low pressure and the condensed water of the steam use portion can be continuously introduced into the upper tank .

The self-controlled pump trap is provided with an automatic pressure control valve. When the condensed water is filled in the upper tank, the pressure sensor detects the pressure to operate the automatic pressure control valve to discharge the condensate of the upper tank to the makeup water tank, As in the case of the tank, the condensed water is kept in a state of not being filled, so that the condensed water generated from the steam use part can be recovered from the upper tank.

The present invention provides an apparatus for steam heating and a condensate recovery device using a vapor compression device and a self-controlled pump trap, thereby miniaturizing the condensate recovery tank and the makeup water tank, thereby facilitating the recovery of condensed water and reducing manufacturing costs.

Also, even when the outside air temperature of the steam use part changes or the condensed water generation amount changes due to the production environment of the product, the condensed water can be continuously recovered and recycled while the condensed water is not charged in the steam use part.

Also, even if the production of the product manufactured by the steam use part is increased by a certain amount, the boiler is not further driven by using the fuel, thereby saving the energy.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a diagram illustrating the prior art relating to condensate and flash steam recovery apparatus.
FIG. 2 conceptually illustrates a steam heating and condensate recovery apparatus using a self-controlled pump trap according to the present invention.
3 is a view showing a steam heating and condensate recovery apparatus using a self-controlled pump trap according to the present invention.
4 is a view showing a self-controlled pump trap of a steam heating and condensate recovery apparatus using a self-controlled pump trap according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should also be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary meanings and the inventor is not limited to the concept of terminology for describing his or her invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

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

As shown in FIG. 2, the condensed water and flash steam recovery apparatus using the self-controlled pump trap according to the present invention includes a boiler 10 for generating high-temperature, high-pressure steam; A steam boiler compressor (30) which is supplied with high-temperature and high-pressure steam from a boiler and sucks re-evaporation steam generated from condensed water generated in a plurality of steam using sections (30) to generate mixed steam and supplies the mixed steam to a plurality of steam using sections 40); A plurality of self-regulating pump traps (50) for collecting condensed water in a plurality of steam use portions; A condensate recovery tank (60) for collecting the condensed water from the plurality of self-controlled pump traps and supplying the collected condensed water to the boiler; And a replenishing water tank 90 for supplying and storing the condensed water generated in the condensed water recovery tank 60 and the condensed water generated in the self-controlled pump trap and supplying the stored condensed water to the boiler 10. Since the condensed water recovered by the plurality of self-regulated pump traps at the plurality of steam use units is at a high temperature, re-evaporated steam is generated in the self-regulated pump traps.

3, the plurality of degreasing base compressors 40 are formed by including a high pressure base material compressor 40a, a medium pressure base material compressor 40b and a low pressure base material compressor 40c, The steam using section 30 is formed to include an intermediate-pressure steam use section 30a and a low-pressure steam use section 30b. The plurality of the self-controlled pump traps 50 are formed by a high- And a steam self-regulating pump trap 50b.

As shown in Fig. 3, each of the vapor-phase compressor units 40 is supplied with high-temperature and high-pressure steam generated in the boiler at the motive side thereof, and is supplied to the condensate recovery tank 60 through the suction side of the high-pressure base material compressor 40a. Pressure steam compressor 40b, and the mixed steam discharged from the medium pressure steam compressor 40b is supplied to the intermediate-pressure steam compressor 40b through the intermediate-pressure steam compressor 30b And supplies the mixed vapor to the low-pressure-steam use unit 30b by sucking the re-evaporated steam from the low-pressure steam self-regulating pump trap 50b through the suction side of the low-pressure rich base oil compressor 40c.

3 and 4, the high-pressure steam self-regulating pump trap 50a and the low-pressure steam self-regulating pump trap 50b are connected to an upper tank 51 (not shown) for transferring and storing the condensed water generated in the steam using unit 30. [ And a lower tank 52 is installed at a lower portion of the upper tank so that the condensed water stored in the upper tank 51 is transferred to the lower tank 52 by free fall. The upper tank 51 and the lower tank 52 are connected by a three-way valve 54.

4, a check valve 56 is provided between the upper tank 51 and the lower tank 52 so that the condensed water does not flow back to the upper tank 51, A water level sensor 55 for detecting the level of the condensed water to be filled is provided and the upper tank 51 is provided with a pressure sensor 57 for detecting the pressure. When the pressure detected by the pressure sensor 57 exceeds the reference value And an automatic pressure control valve 53 for supplying condensate to the makeup water tank 90. The three way valve 54 is connected to the high pressure high temperature Ensure that steam is communicated and disconnected.

The low pressure steam self-regulating pump trap 50b is formed to have the same configuration and function as the high pressure steam self-regulating pump trap 50a.

4, the condensed water generated in the steam using section 30 is collected in the upper tank 51, and is collected in the upper tank 51. In this case, The free water flows into the lower tank 52 in accordance with the height of the upper tank 51 and the lower tank 52.

The three-way valve 54 connected between the upper tank 51 and the lower tank 52 is connected to the upper tank side and the boiler side and the lower tank and is connected to the high pressure The steam can be introduced into the lower tank 52 through the three-way valve 54 or the condensed water in the upper tank 51 can be introduced into the lower tank 52.

When the high pressure steam flows into the lower tank 52 through the three-way valve 54, the condensed water in the lower tank 52 is transferred to the condensate collection tank 60 by the high pressure steam supplied from the boiler 10.

At this time, the pressure of the lower tank 52 becomes high, so that the condensed water falls freely from the upper tank 51, but the condensed water does not flow into the lower tank 52 and flows between the upper tank 51 and the lower tank 52 The high pressure steam of the lower tank 52 is not supplied to the upper tank 51 by the installed check valve 56 so that the lower pressure of the upper tank 51 is maintained as it is and the condensed water of the steam use portion 30 is supplied to the upper tank 51 As shown in FIG.

When the pressure of the steam using section 30 is equal to the pressure of the upper tank 51, the condensed water can not be discharged to the upper tank 51, and the steam can not be supplied to the steam using section 30.

If the steam is not supplied to the steam using unit 30, steam is not supplied to the steam using unit 30, so that the steam using unit 30 drops to a predetermined temperature or lower, When high pressure steam is supplied from the boiler through the three-way valve 54 to the condensate return tank 60 when the pressure of the condensed water in the tank 52 becomes equal to or higher than the set value, the condensate in the lower tank 52 is transferred to the condensate return tank 60, So that the tank 52 can maintain the low pressure so that the condensed water in the upper tank 51 can always be moved by the free fall to the lower tank 52 having a low pressure.

The self-regulating pump trap 50 is provided with an automatic pressure regulating valve 53. When the condensed water is filled in the upper tank 51, the pressure sensor 57 detects the pressure and operates the automatic pressure regulating valve 53 So that the condensed water of the upper tank 51 is discharged to the replenishing water tank 90.

As such, the upper tank 51 maintains a state in which the condensed water is not filled up like the lower tank 52, so that the condensed water generated from the steam using unit 30 can be recovered from the upper tank 51 at all times.

The three-way valve 54 is controlled in accordance with the level of the lower tank 52 provided in the self-regulating pump trap so that the condensed water is transferred to the condensate collection tank 60 according to the condensed water level of the lower tank 52.

The condensed water collected in the condensed water recovery tank 60 is transferred to the replenishing water tank 90 or the boiler 10 in accordance with the water level of the condensed water recovery tank 60 and the condensed water is recovered according to the water level of the boiler 10 So that the condensate of the tank 60 can be transferred to the boiler 10.

The flow of recovery and supply of the condensed water and the flash steam according to the present invention will be described in more detail with reference to FIGS.

3 and 4, the high-temperature high-pressure steam generated in the boiler 10 is collected in the steam header 20a through the high-pressure steam line L1, and is supplied to the first high-pressure steam supply line L2 through the high- Pressure steam supply line (L2) communicated with the first high-pressure steam supply line (L2) is provided on the motive side of the medium-pressure riser compressor (40b) and the low pressure riser compressor (40c) L5). ≪ / RTI >

The suction side of the high pressure base oil compressor (40a) sucks the re-evaporated steam generated in the condensate recovery tank (60) through the low pressure steam line (L3) and the suction side of the medium pressure base oil compressor (40b) Pressure steam line compressor 40c is sucked through the intermediate-pressure steam line L4 and the suction side of the low pressure steam compressor 40c sucks the re-evaporating steam generated from the low-pressure steam self-regulating pump trap 50b And is sucked through the low pressure depressurization line L6.

The mixed steam discharged from the discharge port of the medium pressure steam compressor (40b) is supplied through a duct connected to the intermediate pressure steam using section (30a), and mixed steam discharged from the discharge port of the low pressure steam compressor (40c) Vaporized steam from the high-pressure steam self-regulating pump trap 50a is collected in the low-pressure vapor header 20b through the medium-pressure depressurization line L12 to be supplied to the low-pressure steam supply line L11 To the low-pressure steam using section 30b.

The condensed water generated after the heat exchange in the intermediate-pressure steam use portion 30a is recovered to the high-pressure steam self-regulating pump trap 50a, and the hot water generated after the heat exchange in the low-pressure steam use portion 30b is returned to the low- 50b so that the steam-use portion of the medium-pressure and low-pressure steam is connected to the pump trap by the pipeline.

The high-pressure steam self-regulating pump trap 50a and the low-pressure steam self-regulating pump trap 50b are connected to a three-way valve 54 and a check valve (not shown) so that the upper tank 51 and the lower tank 52 are vertically positioned, The upper tank 51 collects the condensed water generated in the steam using unit 30 and causes it to flow into the lower tank 52 by a free dropping force, The check valve 56 provided between the tanks 52 prevents the condensed water in the lower tank 52 from flowing back to the upper tank 51.

The water level sensor 55 is installed in the lower tank 52 and the first high pressure steam supply line L2, the upper tank 51 and the lower tank 52 are connected and disconnected So that the pressure of the upper tank 51 and the lower tank 52 is uniformly maintained through the three-way valve 54.

When the condensed water is present in the lower tank 52, the connection between the upper tank 51 and the lower tank 52 is disconnected from the three-way valve 54 by a signal from the water level sensor 55, Pressure steam is supplied to the lower tank 52 to transfer the supplied condensed water from the lower tank 52 to the condensate collection tank 60 through the condensate collection line L7, And is pushed out to the replenishment water tank 90 through the discharge line L8 to be transferred.

The automatic pressure regulating valve 53 is connected to the high pressure steam self-regulating pump trap 50a and the low pressure steam self-regulating pump trap 50b by a pipe, and a pressure sensor 57 is installed in the upper tank 51 When the pressure of the upper tank 51 rises above the reference value, the automatic pressure control valve 53 receives the pressure signal and is operated to be transferred to the condensate collection tank 60 through the condensate discharge line L8.

At this time, if the water level of the condensate water recovery tank 60 is not less than the reference value, the condensate water discharge line L8 that is drawn into the condensate water recovery tank 60 is blocked by the vehicle end valve 81 to return the recovered condensate water to the replenishment water tank 90. [ .

A medium pressure steam evaporation line L12 is provided above the upper tank 51 of the high pressure steam self-regulating pump trap 50a to supply re-evaporated steam of medium pressure generated in the condensate of the upper tank 51 to the low pressure steam header 20b so as to be supplied to the low-pressure steam using section 30b through the low-pressure steam supply line L11. That is, mixed steam discharged from the low pressure steam compressor 40c and re-evaporated steam generated from the high pressure steam self-regulating pump trap 50a can be supplied to the low pressure steam use portion 30b.

The condensed water generated in the low-pressure-vapor using portion 30b is collected by the low-pressure steam self-regulating pump trap 50b and operates in the same manner as the operation of the high-pressure steam self-regulating pump trap 50a, so that the condensed water flows into the condensate returning tank 60 To be collected.

A water level sensor is installed in the condensate water recovery tank 60 and operates when the condensed water is above a certain water level to operate the high temperature water pump 70 so that the condensed water is supplied to the boiler 10 through the condensate water supply line L10, When the boiler water level is equal to or higher than the commercial water level and the condensate in the condensate water recovery tank 60 is equal to or higher than a certain water level, the overflow automatic valve 80 is operated to return the condensate water through the condensate water discharge line L8 And discharges the condensed water in the tank 60 to the makeup water tank 90.

When the water level sensor of the boiler detects a certain level of water level or the level sensor 55 installed in the condensate water recovery tank 60 detects a certain level or more and a level signal is generated, the high temperature water pump 70 is driven to operate the condensate recovery tank 60 to be supplied to the boiler 10 through the condensate supply line L10. When the hot water pump 70 is driven and the overflow automatic valve 80 is also opened, the automatic valve 100 for supplying the boiler of the condensate supply line L10 blocks the condensate supply line L10 supplied to the boiler, The condensed water in the recovery tank 60 is supplied to the makeup water tank 90 through the overflow line L9.

That is, when the water level of the condensate water recovery tank 60 is detected to be higher than the reference value, the high temperature water pump 70 is operated. At this time, when the water level signal is lower than the reference value, the overflow automatic valve 80 is not driven and condensed water is supplied to the boiler 10. When the water level of the boiler 10 is above the reference level, The overflow automatic valve 80 is driven to discharge the condensed water to the makeup water tank 90. [

According to the present invention, the steam heating and condensate recovery apparatus using the self-controlled pump trap can reduce the condensate recovery tank 60 and the makeup water tank 90, thereby facilitating the recovery of the condensate water and reducing the manufacturing cost, Even when the amount of generated condensed water fluctuates due to changes in the outside temperature of the product 30 and the production environment of the product, the condensed water is prevented from being filled in the steam using unit 30, The efficiency of using the steam can be increased and even if the production of the product manufactured by the steam using unit 30 is increased by a certain amount, energy is saved by not driving the boiler 10 further by using the fuel .

10: boiler 20a: steam header
20b: low pressure steam header 30:
30a: Medium pressure steam use section 30b: Low pressure steam use section
40: Reduced base compressor 40a: High pressure base compressor
40b: Medium Pressure Compressed Base Compressor 40c: Low Pressure Compressed Base Compressor
50: Self-regulating pump trap 50a: High pressure steam self-regulating pump trap
50b: Low pressure steam self-regulating pump trap 51: Upper tank
52: Lower tank 53: Automatic pressure regulating valve
54: Three-way valve 55: Water level sensor
56: Check valve 57: Pressure sensor
60: Condensate recovery tank 70: Hot water pump
80: overflow automatic valve 90: makeup water tank
100: Automatic valve for supplying boiler
L1: high pressure steam line L2: first high pressure steam supply line
L3: Low pressure steam line L4: Medium pressure steam line
L5: Second high pressure steam supply line L6: Low pressure steam evaporation line
L7: Condensate recovery line L8: Condensate discharge line
L9: Overflow line L10: Condensate supply line
L11: Low pressure steam supply line L12: Medium pressure steam supply line

Claims (8)

In a condensate and flash steam recovery apparatus,
A boiler for generating high temperature and high pressure steam;
A steam boiler compressor which is supplied with steam at a high temperature and pressure from a boiler and sucks re-evaporation steam generated from condensed water generated from a plurality of steam use sections to generate mixed steam and supplies the mixed steam to a plurality of steam using sections;
A plurality of self-regulating pump traps for collecting condensed water in a plurality of steam use portions;
A condensate recovery tank for collecting the condensed water from the plurality of self-controlled pump traps and supplying the collected condensed water to the boiler;
And a replenishing water tank for supplying and storing the condensed water generated by the condensed water recovery tank and the condensed water generated from the self-controlled pump trap, and supplying the stored condensed water to the boiler, wherein the condensed water and the flash steam recovery using the self- Device. The method according to claim 1,
Wherein the plurality of degreasing base compressors are formed by including a high pressure base material compressor, a medium pressure base material compressor, and a low pressure base material compressor,
Wherein the plurality of steam using sections include an intermediate-pressure steam use section and a low-pressure steam use section,
Wherein the plurality of self-regulating pump traps are formed to include a high-pressure steam self-regulating pump trap and a low-pressure steam self-regulating pump trap. 3. The method of claim 2,
Each of the steam pressurized compressors is supplied with high-temperature, high-pressure steam generated in the boiler at the motive side, and the mixed steam obtained by sucking the re-evaporated steam generated from the condensed water collected in the condensate recovery tank through the suction side of the high- Is supplied to the suction side of the intermediate pressure compressor,
The mixed steam discharged from the medium pressure steam compressor is supplied to the medium pressure steam use portion. The mixed steam is sucked from the low pressure steam self-regulating pump trap through the suction side of the low pressure steam compressor to the mixed steam, And the condensed water and the re-evaporated vapor are recovered by the self-regulating pump trap. The method of claim 3,
The high-pressure steam self-regulating pump trap and the low-pressure steam self-regulating pump trap are provided with an upper tank for transferring and storing the condensed water generated in the steam using portion, and a lower tank at the lower portion of the upper tank, Wherein the upper tank and the lower tank are connected to each other by a three-way valve, wherein the upper tank and the lower tank are connected by a three-way valve. 5. The method of claim 4,
A check valve is provided between the upper tank and the lower tank so that condensed water does not flow back to the upper tank,
The lower tank is provided with a water level sensor for detecting the level of the condensed water to be freely dropped and filled,
The upper tank is provided with a pressure sensor for detecting pressure,
And an automatic pressure regulating valve for supplying the condensed water to the replenishing water tank when the pressure detected by the pressure sensor exceeds the reference value is connected to the condenser and the flash evaporator. The method of claim 5,
The three-way valve connects the upper tank side, the boiler side tank and the lower tank,
Wherein the high pressure steam of the boiler flows into the lower tank through the three-way valve or the condensed water of the upper tank flows into the lower tank according to the level of the lower tank. . The method of claim 6,
When the high-pressure steam flows into the lower tank through the three-way valve,
The condensate of the lower tank is transferred to the condensate collection tank by the high-pressure steam supplied from the boiler,
When the pressure of the lower tank becomes high,
The high pressure steam of the lower tank is not supplied to the upper tank by the check valve provided between the upper tank and the lower tank without flowing the running water falling freely from the upper tank so that the lower pressure of the upper tank is maintained, And the condensed water and the ash vapor are collected in the condensed water tank. 8. The method of claim 7,
The self-controlled pump trap is provided with an automatic pressure control valve. When the condensed water is filled in the upper tank, the pressure sensor detects the pressure and operates the automatic pressure control valve to discharge the condensate of the upper tank to the makeup water tank,
Wherein the upper tank is maintained in a state in which the condensed water is not filled in the same manner as in the lower tank so that the condensed water generated from the steam use portion can always be recovered in the upper tank. .

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