CN219867910U - Waste heat recycling system of household garbage incineration power plant - Google Patents
Waste heat recycling system of household garbage incineration power plant Download PDFInfo
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- CN219867910U CN219867910U CN202320397624.6U CN202320397624U CN219867910U CN 219867910 U CN219867910 U CN 219867910U CN 202320397624 U CN202320397624 U CN 202320397624U CN 219867910 U CN219867910 U CN 219867910U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 128
- 238000004064 recycling Methods 0.000 title abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 54
- 239000003546 flue gas Substances 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000009833 condensation Methods 0.000 claims abstract description 25
- 230000005494 condensation Effects 0.000 claims abstract description 25
- 238000011084 recovery Methods 0.000 claims description 9
- 239000010791 domestic waste Substances 0.000 claims description 3
- 239000010908 plant waste Substances 0.000 claims description 3
- 238000004056 waste incineration Methods 0.000 claims 2
- 238000005265 energy consumption Methods 0.000 abstract description 11
- 238000000605 extraction Methods 0.000 abstract description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a waste heat recycling system of a household garbage incineration power plant, which comprises a waste heat utilization unit I, wherein the waste heat utilization unit I comprises a heat exchanger I, a first waste heat utilization pipeline I and a second waste heat utilization pipeline I, a flue gas channel of the heat exchanger I is communicated with a flue gas outlet channel of an SCR denitration device, the first waste heat utilization pipeline I and the second waste heat utilization pipeline I are respectively communicated with the heat exchanger I for heat exchange, and the first waste heat utilization pipeline I is communicated with a warm air device of a primary air warm air unit; the second waste heat utilization pipeline I is communicated with a condensation water pipeline of the turbine thermodynamic system. The waste heat utilization unit I utilizes the waste heat of flue gas exhausted by the SCR denitration device, supplies heat to the heater through the first waste heat utilization pipeline I to preheat cold air of primary air, reduces the power consumption required by primary air heating, heats condensation water through the second waste heat utilization pipeline I, and reduces the energy consumption required by steam turbine extraction heating.
Description
Technical Field
The utility model belongs to the technical field of garbage incineration and reuse, and particularly relates to a waste heat recycling system of a household garbage incineration power plant.
Background
The harmless and quantitative reduction treatment and recycling of the household garbage are usually incineration power generation, the flue gas generated by the garbage incineration contains a large amount of nitrogen oxides, sulfides and the like, the flue gas is directly discharged from a chimney after SCR denitration, and high temperature still remains in the reacted flue gas due to the process requirement of the SCR denitration flue gas, so that the waste of heat sources can be caused by direct discharge without utilizing the residual heat in the flue gas after denitration.
Disclosure of Invention
The utility model aims to solve the technical problem that heat energy is wasted due to direct discharge of flue gas after denitration, so as to provide a waste heat recycling system of a household garbage incineration power plant.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the system comprises a waste heat utilization unit I, wherein the waste heat utilization unit I comprises a heat exchanger I, a first waste heat utilization pipeline I and a second waste heat utilization pipeline I, a flue gas channel of the heat exchanger I is communicated with a flue gas outlet channel of an SCR denitration device, the first waste heat utilization pipeline I and the second waste heat utilization pipeline I are respectively communicated with the heat exchanger I for heat exchange, and the first waste heat utilization pipeline I is communicated with a heater of a primary air heater unit; the second waste heat utilization pipeline I is communicated with a condensation water pipeline of the turbine thermodynamic system. The waste heat utilization unit I utilizes the waste heat of flue gas exhausted by the SCR denitration device, supplies heat to the heater through the first waste heat utilization pipeline I to preheat cold air of primary air, reduces the power consumption required by primary air heating, heats condensation water through the second waste heat utilization pipeline I, and reduces the energy consumption required by steam turbine extraction heating.
As a preferable mode of the utility model, the first waste heat utilization pipeline I comprises a first pipeline I, a first pipeline II and a circulating pump; the inlet of the first pipeline I is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the first pipeline I is communicated with the medium inlet of the air heater, the medium outlet of the air heater is communicated with the inlet of the first pipeline II, the first pipeline II is provided with a circulating pump, the outlet of the first pipeline II is communicated with the heat exchange medium inlet of the heat exchanger I, and the air heater is provided with a primary air heating channel.
The heat exchange medium is heated by flue gas exhausted by the SCR denitration device in the heat exchanger I, the heated heat exchange medium flows to the air heater from the first pipeline I, primary air introduced by the primary air heating channel is preheated in the air heater, the heat exchange medium after heat exchange returns to the heat exchanger I from the first pipeline II under the action of the circulating pump to be heated again, the preheating of the primary air is realized in a circulating and reciprocating mode, the energy consumption required by the heating of the primary air is reduced, the recycling of flue gas waste heat after denitration is realized in a reciprocating mode, and the thermal efficiency of the boiler is improved. The heat exchange medium used is water.
As a preferred scheme of the utility model, the second waste heat utilization pipeline I comprises a second pipeline I and a second pipeline II; the inlet of the second pipeline I is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the second pipeline I is communicated with the water inlet part of the condensed water pipeline, the inlet of the second pipeline II is communicated with the water return part of the condensed water pipeline, and the outlet of the second pipeline II is communicated with the heat exchange medium inlet of the heat exchanger I.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device in the heat exchanger I, the heated heat exchange medium flows into the condensation water pipeline from the second pipeline I, the heat exchange medium after heat exchange of the condensation water pipeline returns to the heat exchanger I from the second pipeline II to be heated again, the heating of condensation water is realized in a circulating and reciprocating mode, the energy consumption required by extraction and heating of the steam turbine is reduced, and the heat exchange medium after heat exchange enters the thermodynamic system of the steam turbine to do work. The heat exchange medium used is water.
As a preferable scheme of the utility model, an induced draft fan is arranged in the outlet direction of a flue gas channel of the heat exchanger I, and a waste heat utilization unit II is arranged in the flue gas outlet direction of the induced draft fan, wherein the waste heat utilization unit II comprises the heat exchanger II, a first waste heat utilization pipeline II and a second waste heat utilization pipeline II; the heat exchanger II is connected with the heat exchanger I in parallel, and a flue gas channel of the heat exchanger II is communicated with a flue gas outlet channel of the induced draft fan; the first waste heat utilization pipeline II and the second waste heat utilization pipeline II are respectively communicated with the heat exchanger II, and the first waste heat utilization pipeline II is communicated with a heater of the primary air heater unit; the second waste heat utilization pipeline II is communicated with a condensation water pipeline of the turbine thermodynamic system.
As a preferable scheme of the utility model, the first waste heat utilization pipeline II comprises a third pipeline I, a third pipeline II and a circulating pump; the inlet of the third pipeline I is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the third pipeline I is communicated with the medium inlet of the air heater, the medium outlet of the air heater is communicated with the inlet of the third pipeline II, a circulating pump is arranged on the third pipeline II, the outlet of the third pipeline II is communicated with the heat exchange medium inlet of the heat exchanger II, and the air heater is provided with a primary air heating channel.
The heat exchange medium is heated by flue gas exhausted by the SCR denitration device in the heat exchanger II, the heated heat exchange medium flows to the air heater from the third pipeline I, primary air introduced by the primary air heating channel is preheated in the air heater, the heat exchange medium after heat exchange returns to the heat exchanger II to be heated again under the action of the circulating pump from the third pipeline II, the preheating of the primary air is realized in a circulating and reciprocating mode, the energy consumption required by the heating of the primary air is reduced, the recycling of flue gas waste heat after denitration is realized in a reciprocating mode, and the thermal efficiency of the boiler is improved.
The second waste heat utilization pipeline II comprises a fourth pipeline I and a fourth pipeline II; the inlet of the fourth pipeline I is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fourth pipeline I is communicated with the water inlet part of the condensed water pipeline, the inlet of the fourth pipeline II is communicated with the water return part of the condensed water pipeline, and the outlet of the fourth pipeline II is communicated with the heat exchange medium inlet of the heat exchanger II.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device in the heat exchanger II, the heated heat exchange medium flows into the condensation water pipeline from the fourth pipeline I, the heat exchange medium subjected to heat exchange in the condensation water pipeline returns to the heat exchanger I from the fourth pipeline II to be heated again, the condensation water is heated in a circulating and reciprocating mode, the energy consumption required by extraction and heating of the steam turbine is reduced, and the heat exchange medium subjected to heat exchange enters the thermodynamic system of the steam turbine to do work.
As a preferred scheme of the utility model, when the heat exchanger I and the heat exchanger II are in a parallel state, the waste heat utilization unit I and the waste heat utilization unit II share a heater, a circulating pump and a condensation water pipeline in order to simplify the pipeline.
As a preferable scheme of the utility model, an induced draft fan is arranged in the outlet direction of a flue gas channel of the heat exchanger I, and a waste heat utilization unit II is arranged in the flue gas outlet direction of the induced draft fan, wherein the waste heat utilization unit II comprises the heat exchanger II, a first waste heat utilization pipeline III and a second waste heat utilization pipeline III; the flue gas channel of the heat exchanger II is communicated with the flue gas outlet channel of the induced draft fan; the first waste heat utilization pipeline II and the second waste heat utilization pipeline II are respectively communicated with the heat exchanger II, and the heat exchanger II is connected with the heat exchanger I in series through the first waste heat utilization pipeline III, the second waste heat utilization pipeline III, the first waste heat utilization pipeline I and the second waste heat utilization pipeline I.
As a preferable mode of the utility model, the first waste heat utilization pipeline III comprises a fifth pipeline I and a fifth pipeline II; the inlet of the fifth pipeline I is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fifth pipeline I is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of the first pipeline I, the outlet of the first pipeline I is communicated with the medium inlet of the air heater, the medium outlet of the air heater is communicated with the inlet of the first pipeline II, the first pipeline II is provided with a circulating pump, the outlet of the first pipeline II is communicated with the inlet of the fifth pipeline II, and the outlet of the fifth pipeline II is communicated with the heat exchange medium inlet of the heat exchanger II; the air heater is provided with a primary air heating channel; the second waste heat utilization pipeline III comprises a sixth pipeline I and a sixth pipeline II; the heat exchange medium outlet of the heat exchanger II is communicated with the inlet of a sixth pipeline I, the outlet of the sixth pipeline I is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of a second pipeline I, the outlet of the second pipeline I is communicated with the water inlet part of the condensed water pipeline, the inlet of the second pipeline II is communicated with the water return part of the condensed water pipeline, the outlet of the second pipeline II is communicated with the inlet of the sixth pipeline II, and the outlet of the sixth pipeline II is communicated with the heat exchange medium inlet of the heat exchanger II.
According to the utility model, the waste heat utilization unit I and the waste heat utilization unit II are used for utilizing the waste heat of the flue gas exhausted by the SCR denitration device, and can be arranged in series or in parallel, and the waste heat utilization unit I and the waste heat utilization unit II are used for reducing the power consumption required by primary air heating through preheating cold air of the primary air after heat exchange with the flue gas, heating condensation water, reducing the energy consumption required by steam extraction heating of a steam turbine, and enabling a heat exchange medium after heat exchange to enter a thermal system of the steam turbine to do work; realize recycling the flue gas waste heat after SCR denitration, improve boiler thermal efficiency.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of example 1.
Fig. 2 is a schematic diagram of example 2.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.
Example 1:
the utility model provides a domestic waste burns power plant waste heat recovery utilizes system, as shown in fig. 1, includes waste heat utilization unit I, waste heat utilization unit I includes heat exchanger I1, first waste heat utilization pipeline I and second waste heat utilization pipeline I, heat exchanger I1's flue gas passageway and SCR denitrification facility 2's play cigarette passageway intercommunication.
The first waste heat utilization pipeline I comprises a first pipeline I3, a first pipeline II4 and a circulating pump 6; the inlet of the first pipeline I3 is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the first pipeline I3 is communicated with the medium inlet of a warm air device 5 of the primary air warm air unit, the medium outlet of the warm air device 5 is communicated with the inlet of the first pipeline II4, the first pipeline II4 is provided with a circulating pump 6, the outlet of the first pipeline II4 is communicated with the heat exchange medium inlet of the heat exchanger I, and the warm air device is provided with a primary air heating channel.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device 2 in the heat exchanger I, the heated heat exchange medium flows to the air heater from the first pipeline I, primary air introduced by the primary air heating channel is preheated in the air heater, the heat exchange medium after heat exchange returns to the heat exchanger I from the first pipeline II under the action of the circulating pump to be heated again, the preheating of the primary air is realized in a circulating and reciprocating manner, the energy consumption required by the heating of the primary air is reduced, the recycling of flue gas waste heat after denitration is realized in a reciprocating circulation manner, and the thermal efficiency of the boiler is improved. The heat exchange medium used is water.
The second waste heat utilization pipeline I comprises a second pipeline I7 and a second pipeline II8; the inlet of the second pipeline I7 is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the second pipeline I7 is communicated with the water inlet part of the condensation pipeline of the turbine thermodynamic system, the inlet of the second pipeline II8 is communicated with the water return part of the condensation pipeline, and the outlet of the second pipeline II8 is communicated with the heat exchange medium inlet of the heat exchanger I.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device 2 in the heat exchanger I, the heated heat exchange medium flows into the condensation water pipeline from the second pipeline I7, the heat exchange medium after heat exchange of the condensation water pipeline returns to the heat exchanger I from the second pipeline II8 to be heated again, the heating of condensation water is realized in a circulating and reciprocating mode, the energy consumption required by extraction and heating of the steam turbine is reduced, and the heat exchange medium after heat exchange enters the thermodynamic system of the steam turbine to do work. The heat exchange medium used is water.
In order to fully utilize the waste heat of the flue gas, an induced draft fan 9 is arranged in the outlet direction of a flue gas channel of the heat exchanger I1, and a waste heat utilization unit II is arranged in the flue gas outlet direction of the induced draft fan 9 and comprises a heat exchanger II10, a first waste heat utilization pipeline II and a second waste heat utilization pipeline II; the flue gas channel of the heat exchanger II10 is communicated with the flue gas outlet channel of the induced draft fan; the heat exchanger II10 is arranged in parallel with the heat exchanger I1.
The first waste heat utilization pipeline II comprises a third pipeline I11, a third pipeline II12 and a circulating pump 13; the inlet of the third pipeline I11 is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the third pipeline I11 is communicated with the medium inlet of the air heater 5, the medium outlet of the air heater 5 is communicated with the inlet of the third pipeline II12, the third pipeline II12 is provided with a circulating pump 6, the outlet of the third pipeline II12 is communicated with the heat exchange medium inlet of the heat exchanger II, and the air heater is provided with a primary air heating channel.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device 2 in the heat exchanger II, the heated heat exchange medium flows to the air heater from the third pipeline I, primary air introduced by the primary air heating channel is preheated in the air heater, the heat exchange medium after heat exchange returns to the heat exchanger II to be heated again under the action of the circulating pump from the third pipeline II, the preheating of the primary air is realized in a circulating and reciprocating mode, the energy consumption required by the heating of the primary air is reduced, the recycling of flue gas waste heat after denitration is realized in a reciprocating mode, and the thermal efficiency of the boiler is improved.
The second waste heat utilization pipeline II comprises a fourth pipeline I14 and a fourth pipeline II15; the inlet of the fourth pipeline I14 is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fourth pipeline I14 is communicated with the water inlet part of the condensed water pipeline, the inlet of the fourth pipeline II15 is communicated with the water return part of the condensed water pipeline, and the outlet of the fourth pipeline II15 is communicated with the heat exchange medium inlet of the heat exchanger II.
The heat exchange medium is heated by the flue gas exhausted by the SCR denitration device 2 in the heat exchanger II, the heated heat exchange medium flows into the condensation water pipeline from the fourth pipeline I14, the heat exchange medium subjected to heat exchange in the condensation water pipeline returns to the heat exchanger I from the fourth pipeline II15 to be heated again, the heating of condensation water is realized in a circulating and reciprocating mode, the energy consumption required by extraction and heating of the steam turbine is reduced, and the heat exchange medium subjected to heat exchange enters the thermodynamic system of the steam turbine to do work.
And in order to simplify management, when the heat exchanger I and the heat exchanger II are in a parallel state, the waste heat utilization unit I and the waste heat utilization unit II share a heater, a circulating pump and a condensation water pipeline.
Example 2:
as shown in fig. 2, an induced draft fan 9 is arranged in the outlet direction of a flue gas channel of a heat exchanger I1, and a waste heat utilization unit II is arranged in the smoke outlet direction of the induced draft fan 9, wherein the waste heat utilization unit II comprises a heat exchanger II10, a first waste heat utilization pipeline III and a second waste heat utilization pipeline III; the flue gas channel of the heat exchanger II10 is communicated with the flue gas outlet channel of the induced draft fan; the first waste heat utilization pipeline II and the second waste heat utilization pipeline II are respectively communicated with the heat exchanger II, and the heat exchanger II10 is connected with the heat exchanger I1 in series through the first waste heat utilization pipeline III, the second waste heat utilization pipeline III, the first waste heat utilization pipeline I and the second waste heat utilization pipeline I.
The first waste heat utilization pipeline III comprises a fifth pipeline I16 and a fifth pipeline II17; the inlet of the fifth pipeline I16 is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fifth pipeline I16 is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of the first pipeline I3, the outlet of the first pipeline I3 is communicated with the medium inlet of the air heater 5, the medium outlet of the air heater 5 is communicated with the inlet of the first pipeline II4, the first pipeline II4 is provided with a circulating pump 6, the outlet of the first pipeline II4 is communicated with the inlet of the fifth pipeline II17, and the outlet of the fifth pipeline II17 is communicated with the heat exchange medium inlet of the heat exchanger II; the air heater is provided with a primary air heating channel;
the second waste heat utilization pipeline III comprises a sixth pipeline I18 and a sixth pipeline II19; the heat exchange medium outlet of the heat exchanger II is communicated with the inlet of a sixth pipeline I18, the outlet of the sixth pipeline I18 is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of a second pipeline I7, the outlet of the second pipeline I7 is communicated with the water inlet part of the condensed water pipeline, the inlet of a second pipeline II8 is communicated with the water return part of the condensed water pipeline, the outlet of the second pipeline II8 is communicated with the inlet of a sixth pipeline II19, the outlet of the sixth pipeline II19 is communicated with the heat exchange medium inlet of the heat exchanger II, and the rest is the same as the embodiment 1.
In the description of the present specification, reference to the terms "one embodiment," "example," "specific example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. A waste heat recovery and utilization system of a household garbage incineration power plant is characterized in that: the waste heat utilization unit I comprises a heat exchanger I (1), a first waste heat utilization pipeline I and a second waste heat utilization pipeline I, wherein a flue gas channel of the heat exchanger I (1) is communicated with a flue gas outlet channel of the SCR denitration device (2), the first waste heat utilization pipeline I and the second waste heat utilization pipeline I are respectively communicated with the heat exchanger I (1) for heat exchange, and the first waste heat utilization pipeline I is communicated with a warm air device of the primary air warm air unit; the second waste heat utilization pipeline I is communicated with a condensation water pipeline of the turbine thermodynamic system.
2. The waste heat recovery and utilization system of a household garbage incineration power plant according to claim 1, wherein: the first waste heat utilization pipeline I comprises a first pipeline I (3), a first pipeline II (4) and a circulating pump (6); the inlet of the first pipeline I (3) is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the first pipeline I (3) is communicated with the medium inlet of the heater (5), the medium outlet of the heater (5) is communicated with the inlet of the first pipeline II (4), the first pipeline II (4) is provided with a circulating pump (6), the outlet of the first pipeline II (4) is communicated with the heat exchange medium inlet of the heat exchanger I, and the heater is provided with a primary air heating channel.
3. The waste heat recovery and utilization system of a household garbage incineration power plant according to claim 2, characterized in that: the second waste heat utilization pipeline I comprises a second pipeline I (7) and a second pipeline II (8); the inlet of the second pipeline I (7) is communicated with the heat exchange medium outlet of the heat exchanger I, the outlet of the second pipeline I (7) is communicated with the water inlet part of the condensed water pipeline, the inlet of the second pipeline II (8) is communicated with the water return part of the condensed water pipeline, and the outlet of the second pipeline II (8) is communicated with the heat exchange medium inlet of the heat exchanger I.
4. A domestic waste incineration power plant waste heat recovery and utilization system according to claim 3, characterised in that: an induced draft fan (9) is arranged in the outlet direction of a flue gas channel of the heat exchanger I (1), and a waste heat utilization unit II is arranged in the flue gas outlet direction of the induced draft fan (9), and comprises a heat exchanger II (10), a first waste heat utilization pipeline II and a second waste heat utilization pipeline II; the heat exchanger II (10) is arranged in parallel with the heat exchanger I (1), and a flue gas channel of the heat exchanger II (10) is communicated with a flue gas outlet channel of the induced draft fan; the first waste heat utilization pipeline II and the second waste heat utilization pipeline II are respectively communicated with the heat exchanger II, and the first waste heat utilization pipeline II is communicated with a heater of the primary air heater unit; the second waste heat utilization pipeline II is communicated with a condensation water pipeline of the turbine thermodynamic system.
5. The waste heat recovery and utilization system of a household garbage incineration power plant according to claim 4, wherein: the first waste heat utilization pipeline II comprises a third pipeline I (11), a third pipeline II (12) and a circulating pump (6); the inlet of the third pipeline I (11) is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the third pipeline I (11) is communicated with the medium inlet of the heater (5), the medium outlet of the heater (5) is communicated with the inlet of the third pipeline II (12), the third pipeline II (12) is provided with a circulating pump (6), the outlet of the third pipeline II (12) is communicated with the heat exchange medium inlet of the heat exchanger II, and the heater is provided with a primary air heating channel; the second waste heat utilization pipeline II comprises a fourth pipeline I (14) and a fourth pipeline II (15); the inlet of the fourth pipeline I (14) is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fourth pipeline I (14) is communicated with the water inlet part of the condensed water pipeline, the inlet of the fourth pipeline II (15) is communicated with the water return part of the condensed water pipeline, and the outlet of the fourth pipeline II (15) is communicated with the heat exchange medium inlet of the heat exchanger II.
6. The waste heat recovery and utilization system of a household garbage incineration power plant according to claim 5, wherein: the waste heat utilization unit I and the waste heat utilization unit II share a heater, a circulating pump and a condensation water pipeline.
7. A domestic waste incineration power plant waste heat recovery and utilization system according to claim 3, characterised in that: an induced draft fan (9) is arranged in the outlet direction of a flue gas channel of the heat exchanger I (1), and a waste heat utilization unit II is arranged in the flue gas outlet direction of the induced draft fan (9), and comprises a heat exchanger II (10), a first waste heat utilization pipeline III and a second waste heat utilization pipeline III; the flue gas channel of the heat exchanger II (10) is communicated with the flue gas outlet channel of the induced draft fan; the first waste heat utilization pipeline II and the second waste heat utilization pipeline II are respectively communicated with the heat exchanger II, and the heat exchanger II (10) is connected in series with the heat exchanger I (1) through the first waste heat utilization pipeline III and the second waste heat utilization pipeline III, the first waste heat utilization pipeline I and the second waste heat utilization pipeline I.
8. The waste heat recovery and utilization system of a household garbage incineration power plant according to claim 7, wherein: the first waste heat utilization pipeline III comprises a fifth pipeline I (16) and a fifth pipeline II (17); the inlet of the fifth pipeline I (16) is communicated with the heat exchange medium outlet of the heat exchanger II, the outlet of the fifth pipeline I (16) is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of the first pipeline I (3), the outlet of the first pipeline I (3) is communicated with the medium inlet of the warm air device (5), the medium outlet of the warm air device (5) is communicated with the inlet of the first pipeline II (4), the first pipeline II (4) is provided with a circulating pump (6), the outlet of the first pipeline II (4) is communicated with the inlet of the fifth pipeline II (17), and the outlet of the fifth pipeline II (17) is communicated with the heat exchange medium inlet of the heat exchanger II; the air heater is provided with a primary air heating channel; the second waste heat utilization pipeline III comprises a sixth pipeline I (18) and a sixth pipeline II (19); the heat exchange medium outlet of the heat exchanger II is communicated with the inlet of a sixth pipeline I (18), the outlet of the sixth pipeline I (18) is communicated with the heat exchange medium inlet of the heat exchanger I, the heat exchange medium outlet of the heat exchanger I is communicated with the inlet of a second pipeline I (7), the outlet of the second pipeline I (7) is communicated with the water inlet part of the condensed water pipeline, the inlet of the second pipeline II (8) is communicated with the water return part of the condensed water pipeline, the outlet of the second pipeline II (8) is communicated with the inlet of a sixth pipeline II (19), and the outlet of the sixth pipeline II (19) is communicated with the heat exchange medium inlet of the heat exchanger II.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320397624.6U CN219867910U (en) | 2023-03-06 | 2023-03-06 | Waste heat recycling system of household garbage incineration power plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320397624.6U CN219867910U (en) | 2023-03-06 | 2023-03-06 | Waste heat recycling system of household garbage incineration power plant |
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| CN219867910U true CN219867910U (en) | 2023-10-20 |
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| CN202320397624.6U Active CN219867910U (en) | 2023-03-06 | 2023-03-06 | Waste heat recycling system of household garbage incineration power plant |
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| CN (1) | CN219867910U (en) |
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- 2023-03-06 CN CN202320397624.6U patent/CN219867910U/en active Active
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