JPH057902U - Power generation equipment in a refuse incineration plant - Google Patents

Abstract

(57) [Summary] [Structure] This is a power generation facility that guides the high-pressure steam generated in the refuse incineration plant to the condensing turbine generator 2 to generate electric power, and the steam discharged from the condensing turbine is absorbed It is a power generation facility configured to lead to the regenerator 13 and the evaporator 11 of the heat pump device 3 to be used as a driving heat source, and then to lead the condensed water to the exhaust condensate tank 4. [Effect] The steam discharged from the condensing turbine is guided to the absorption heat pump device, used as a driving heat source for the steam, and then guided to the condensate tank. Unlike what is conducted, the heat of steam can be effectively used.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power generation facility in a refuse incineration plant.

[0002]

[Prior Art]

 Generally, in a refuse incineration plant, a power generation facility is provided in order to recover heat generated during incineration.

Conventionally, as this type of power generation equipment, there is one using a condensing turbine or a back pressure turbine. As shown in FIG. 5, when a condensing turbine is used, the high-pressure steam from the boiler is supplied to the condensing turbine generator 102 via the high-pressure steam header 101 to generate electricity. The steam discharged from the condensate turbine of the condensate turbine generator 102 is condensed into water by the exhaust vacuum condenser 103, is stored in the exhaust condensate tank 104, and is then condensed via the condensate transfer pipe 105. It is sent to a water tank (not shown).

A part of the steam from the high-pressure steam header 101 and the condensate turbine 102 is guided to the low-pressure steam header 106 and then supplied to the heat utilization facility in the plant.

Further, as shown in FIG. 6, when a back pressure turbine is used, the high pressure steam from the high pressure steam header 111 is supplied to the back pressure turbine generator 112 to generate electricity. The high-pressure steam from the boiler is supplied to the back pressure turbine generator 112 via the high-pressure steam header 111 to generate power. The steam discharged from the back pressure turbine of the back pressure turbine generator 112 is condensed into water by the low pressure steam condenser 113 and enters the condensate tank 114.

A part of the steam of the high-pressure steam header 111 is introduced into the high-pressure steam header 115 and condensed, and then enters the condensate tank 114. Further, a part of the steam discharged from the back pressure turbine of the back pressure turbine generator 112 is supplied to the heat utilization facility in the plant via the low pressure steam header 116.

[0007]

[Problems to be solved by the device]

 However, as described above, most of the steam exiting the steam turbines of the generators 102 and 112 is condensed in the condensers 103 and 113, and therefore heat is not recovered and is discharged outside the system, which is uneconomical. Met.

Therefore, an object of the present invention is to provide a power generation facility in a refuse incineration plant that can solve the above problems.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, the power generation equipment in the waste incineration plant of the present invention is a power generation equipment that guides the high-pressure steam generated in the waste incineration plant to the steam turbine for power generation to generate electricity, and is discharged from the steam turbine. The generated steam is guided to at least the regenerator of the absorption heat pump device, used as a driving heat source, and then the condensed water is guided to the condensate tank.

[0010]

[Action]

 According to the above configuration, the steam discharged from the steam turbine is guided to the absorption heat pump device, used as its driving heat source, and then guided to the condensate tank.

[0011]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIG. In the first embodiment, a condensing turbine is used as a steam turbine for power generation, and a first type is used as an absorption heat pump device driven by steam emitted from the turbine. explain. The first type absorption heat pump obtains a fluid at an intermediate temperature level between the high temperature heat source fluid and the low temperature heat source fluid (waste heat source fluid) with the help of the high temperature heat source fluid (steam).

That is, the power generation equipment includes a condensate turbine generator 2 to which the high-pressure steam generated in the boiler by the heat of incineration is supplied via the high-pressure steam header 1, and the condensate turbine generator 2 It is composed of an absorption heat pump device 3 that operates using steam discharged from the condensate turbine as a driving heat source, an exhaust condensate tank 4 that stores water condensed by the absorption heat pump device 3, and a hot water header 5. There is.

The absorption heat pump device 3 includes an evaporator 11 for evaporating a refrigerant liquid (water) and an absorption liquid (for example, a lithium bromide aqueous solution) for the refrigerant vapor (steam) evaporated in the evaporator 11. An absorber 12 that absorbs heat to generate heat, and a regenerator 13 that absorbs the refrigerant vapor in the absorber 12 to heat the diluted absorption liquid diluted and evaporate the refrigerant to regenerate the absorption liquid. And a condenser 14 for condensing the refrigerant vapor separated by the regenerator 13 and supplying the heat transfer pipe in the evaporator 11 with the low-temperature vapor discharged from the condensing turbine and the evaporator 11 The high-temperature steam from the condensate turbine is supplied to the first heating steam supply pipe 16 that guides the water condensed in step 1 to the exhaust condensate tank 4 and the heat transfer pipe in the regenerator 13, and the regenerator 13 Warm the water condensed in It comprises a second heating steam supply pipe 17 leading to the header 5 and a heated fluid supply pipe 18 for sequentially supplying a heated fluid (for example, warm water) to the absorber 12 and the condenser 14.

Therefore, after the high-pressure steam is supplied from the high-pressure steam header 1 to the condensing turbine generator 2 for power generation, the low-pressure steam extracted from the condensing turbine is the evaporator of the absorption heat pump device 3. The high temperature steam extracted from the condensate turbine is supplied to the regenerator 13 and is used as a driving heat source of the heat pump cycle. That is, heated water (warm water) is sequentially supplied from the heated fluid supply pipe 18 into the absorber 12 and the condenser 14 and heated to a predetermined temperature, and this heated water is transferred to a heat utilization facility outside the plant. ..

On the other hand, the water condensed by releasing heat in the evaporator 11 is guided to the exhaust condensate tank 4 and then condensed through a condensate transfer pipe 7 having an exhaust condensate pump 6 on the way. Transferred to a tank (not shown). The hot water that has released heat and condensed in the regenerator 13 is supplied to the heat utilization facility in the plant, for example, via the hot water header 5.

As described above, the steam discharged from the condensing turbine releases heat as a driving heat source in the absorption heat pump device, not as a condenser, and becomes water. Used.

Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the condensing turbine is used as the steam turbine for power generation, but in the second embodiment, the back pressure turbine is used.

That is, the power generation equipment includes a back pressure turbine generator 22 to which high pressure steam generated in the boiler by heat at the time of incineration is supplied via the high pressure steam header 21, and the back pressure turbine generator 22. First type absorption heat pump device 23 that operates by using steam discharged from the back pressure turbine as a driving heat source, a hot water header 24 that stores water condensed by the absorption heat pump device 23, and a high pressure steam header 21. It is composed of a high-pressure steam condenser 25 for condensing the high-pressure steam taken out from the tank and a condensate tank 26 for storing the condensed water from the high-pressure steam condenser 25.

As in the first embodiment, the absorption heat pump device 23 has an evaporator 31 for evaporating a refrigerant liquid (water) and a refrigerant vapor (water vapor) evaporated by the evaporator 31. Absorber 32 that absorbs water into an absorbing liquid (for example, lithium bromide aqueous solution) to generate heat, and a diluted dilute absorbing liquid that absorbs refrigerant vapor in this absorber 32 and heats it to evaporate the cooling medium. It has a regenerator 33 that regenerates the absorbing liquid and a condenser 34 that condenses the refrigerant vapor separated by the regenerator 33, and the heat transfer pipe in the regenerator 33 is discharged from the back pressure turbine. A heating steam supply pipe 36 that supplies low-pressure steam and guides the water condensed in the regenerator 33 to the hot water header 24, and a cooling water supply pipe 37 that supplies cooling water to the heat transfer pipe in the evaporator 31. The fluid to be heated (eg hot water) It is composed of a heated fluid supply pipe 38 that sequentially supplies the absorber 32 and the condenser 34.

Therefore, after the high-pressure steam is supplied from the high-pressure steam header 21 to the back-pressure turbine generator 22 for power generation, the steam extracted from the back-pressure turbine is the regenerator 33 of the absorption heat pump device 23. And used as a driving heat source for the heat pump cycle. Of course, at this time, the cooling water is supplied to the evaporator 31 via the cooling water supply pipe 37. Then, heated water (warm water) is sequentially supplied from the heated fluid supply pipe 38 into the absorber 32 and the condenser 34 and heated to a predetermined temperature, and the heated water is supplied to a heat utilization facility outside the plant. Be transferred.

Note that the water condensed by releasing heat in the regenerator 33 is guided to the hot water header 24 and then supplied to, for example, a heat utilization facility in the plant. Condensate from the high-pressure steam condenser 25 is stored in a condensate tank 26 and then sent to a deaerator via a condensate transfer pipe 28 having a condensate pump 27.

Next, third and fourth embodiments of the present invention will be described with reference to FIGS. 3 and 4. In the first and second embodiments described above, the first type was used as the absorption heat pump device provided in the power generation equipment, but in the third and fourth embodiments, the second type is used. It uses a kind of absorption heat pump device. The second-type absorption heat pump device uses high-temperature water by using the thermal energy of a low-temperature heat source as drive energy.

Since the third and fourth embodiments and the first and second embodiments have almost the same configuration, the same parts are designated by the same reference numerals and the absorption heat pump device Only the points will be explained.

That is, in the third embodiment, as shown in FIG. 3, the condensing turbine generator 2 is used, and the steam discharged from this condensing turbine is passed through the first heating steam supply pipe 16. And is supplied in parallel to the regenerator 13 and the evaporator 11 of the absorption heat pump device 41. The heated water (warm water) is guided only into the absorber 12 via the heated fluid supply pipe 18, and the cooling water is supplied to the condenser 14 via the cooling water supply pipe 19. In FIG. 3, 8 is a low-pressure steam header for extracting steam from the condensate turbine of the condensate turbine generator 2, from which steam is supplied to the heat utilization facility in the plant.

Further, in the fourth embodiment, as shown in FIG. 4, the back pressure turbine generator 22 is used, and the steam discharged from the back pressure turbine is absorbed through the heating steam supply pipe 36. It is supplied in parallel to the regenerator 33 and the evaporator 31 of the heat pump device 51. The water to be heated (hot water) is introduced only into the absorber 32 via the fluid supply pipe 38 to be heated, and the cooling water is supplied to the condenser 34 via the cooling water supply pipe 39. Further, in the case of the fourth embodiment, the steam discharged from the regenerator 33 and the evaporator 31 is guided to the low-pressure steam header 29, from which steam is supplied to the heat utilization facility in the plant.

[0026]

[Effect of the device]

 As described above, according to the configuration of the present invention, the steam discharged from the steam turbine is guided to the absorption heat pump device, used as the driving heat source thereof, and then guided to the condensate tank. Moreover, unlike the one that directly leads to the condenser, the heat of steam can be effectively used.

[Brief description of drawings]

FIG. 1 is a flow diagram showing a schematic configuration of a power generation facility according to a first embodiment of the present invention.

FIG. 2 is a flow diagram showing a schematic configuration of a power generation facility according to a second embodiment of the present invention.

FIG. 3 is a flow diagram showing a schematic configuration of a power generation facility according to a third embodiment of the present invention.

FIG. 4 is a flow diagram showing a schematic configuration of a power generation facility according to a fourth embodiment of the present invention.

FIG. 5 is a flow diagram showing a schematic configuration of power generation equipment in a conventional example.

FIG. 6 is a flow diagram showing a schematic configuration of power generation equipment in a conventional example.

[Explanation of symbols] 2 Condensate turbine generator 3 Absorption type heat pump device 11 Evaporator 12 Absorber 13 Regenerator 14 Condenser 16 First heating steam supply pipe 17 Second heating steam supply pipe 18 Heated fluid supply pipe 19 Cooling Water supply pipe 22 Back pressure turbine generator 23 Absorption heat pump device 31 Evaporator 32 Absorber 33 Regenerator 34 Condenser 36 Heating steam supply pipe 37 Cooling water supply pipe 38 Heated fluid supply pipe 39 Cooling water supply pipe 41, 51 Absorption heat pump device

Claims (1)

[Claims for utility model registration] [Claim 1] A power generation facility for guiding high-pressure steam generated in a refuse incineration plant to a steam turbine for power generation to generate power, and absorbing steam discharged from the steam turbine. A power generation facility, characterized in that, after being guided to at least a regenerator of a type heat pump device and used as a driving heat source, the condensed water is guided to a condensate tank.