CN221322553U - Waste heat utilization device for gas power generation in well site - Google Patents
Waste heat utilization device for gas power generation in well site Download PDFInfo
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- CN221322553U CN221322553U CN202323418861.5U CN202323418861U CN221322553U CN 221322553 U CN221322553 U CN 221322553U CN 202323418861 U CN202323418861 U CN 202323418861U CN 221322553 U CN221322553 U CN 221322553U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 91
- 239000007789 gas Substances 0.000 title claims abstract description 57
- 238000010248 power generation Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000002309 gasification Methods 0.000 claims abstract description 25
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000001502 supplementing effect Effects 0.000 claims description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 15
- 239000003546 flue gas Substances 0.000 description 15
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 8
- 238000005485 electric heating Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 239000000446 fuel Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a well site gas power generation waste heat utilization device, which comprises a plurality of gas generators which are communicated with an induced air pipeline through pipelines, wherein the induced air pipeline is communicated with a waste heat boiler through the pipelines, the induced air pipeline is communicated with a draught fan through the pipelines, the waste heat boiler is communicated with a refrigerator through the pipelines, the pipelines of the waste heat boiler and the refrigerator are respectively communicated with a steam turbine generator and a steam-water heat exchanger, the steam turbine generator, the steam-water heat exchanger and the refrigerator are respectively communicated with a condenser through steam return pipelines, and the condenser is communicated with a water storage tank; one of the gas generators is also communicated with a gasification device through a pipeline, and the gasification device is communicated with a refrigerator through a pipeline and a pipeline between the waste heat boiler and the refrigerator. The well site gas power generation waste heat utilization device provided by the utility model comprehensively considers the energy utilization efficiency, optimizes the energy utilization, greatly improves the energy utilization rate, saves energy, reduces consumption, avoids environmental pollution and improves economic benefits.
Description
Technical Field
The utility model belongs to the technical field of waste heat recovery, and particularly relates to a well site gas power generation waste heat utilization device.
Background
The shale gas exploitation in China is mainly located in Chongqing of Sichuan areas, the road is rugged, the burying is deeper, the development difficulty is high, the period is long, and the cost is high. The electric drive fracturing complete equipment is key equipment for shale gas exploitation, and can provide system solution service for shale gas fields. Early, electricity drives fracturing unit power, mainly comes from basic unit's electric wire netting, along with the operation scale is constantly enlarged, and partial shale gas production area basic unit's electric wire netting construction is comparatively lagged, is difficult to satisfy large-scale shale gas fracturing operation mode and equipment ability demand. Therefore, a power supply technical scheme of the distributed gas turbine generator set and a power supply and distribution technical scheme of a high-voltage power grid are established, the construction cost of a power grid of a fracturing well site is reduced, the safety and the flexibility of a power supply system are improved, and the safe and reliable electric drive fracturing operation of the well site is ensured.
The heat released by the combustion of the fuel of the gas turbine comprises heat converted into electric energy, heat taken away by exhaust gas and heat taken away by a cooling system, particularly, the discharged flue gas contains a large amount of heat, the single-cycle heat efficiency of the gas turbine is 30% -40%, a large amount of heat energy of the gas is wasted, and out-of-standard emission of nitrogen oxides and the like is caused. At present, no mature technology exists for utilizing the waste heat lost by the part of the gas generator set, most waste is only wasted, not only is the waste of resources caused, but also the heat pollution is caused to the environment.
Disclosure of utility model
The utility model aims to provide a well site gas power generation waste heat utilization device, which solves the problems that the existing waste heat utilization for partial loss of a gas power generation unit is not mature, most waste is only wasted, not only is the waste of resources caused, but also the heat pollution is caused to the environment.
The technical scheme adopted by the utility model is that the well site gas power generation waste heat utilization device comprises a plurality of gas generators, wherein the gas generators are communicated with an induced air pipeline through pipelines, the induced air pipeline is communicated with a waste heat boiler through the pipelines, an induced draft fan is communicated with the pipeline which is communicated with the waste heat boiler, the waste heat boiler is communicated with a refrigerator through the pipeline, the pipeline which is communicated with the waste heat boiler is respectively communicated with a steam turbine generator and a steam-water heat exchanger, the steam turbine generator, the steam-water heat exchanger and the refrigerator are respectively communicated with a condenser through steam reflux pipelines, the condenser is communicated with a water storage tank, and the waste heat boiler is also communicated with a water supplementing pipeline; one of the gas generators is also communicated with a gasification device through a pipeline, and the gasification device is communicated with a refrigerator through a pipeline and a pipeline between the waste heat boiler and the refrigerator.
The utility model is also characterized in that:
The gasification device is an air temperature type gasifier or an electric heating type gasifier.
Valves are respectively arranged on pipelines communicated between the waste heat boiler and the steam turbine generator, between the waste heat boiler and the refrigerator, and between the waste heat boiler and the steam-water heat exchanger, and between the gasification device and the refrigerator.
An insulating layer is arranged on the outer side of the induced air pipeline.
The steam-water heat exchanger is communicated with a cold water pipe.
The beneficial effects of the utility model are as follows:
The waste heat utilization device for the well site gas power generation provided by the utility model can effectively utilize waste heat resources of the gas power generation unit to be changed into available energy sources: the method is used for heating, refrigerating and preparing domestic hot water, comprehensively considers the energy utilization efficiency, changes waste heat into available resources, meets the daily application requirements of well sites, saves daily energy expenditure, greatly improves the energy utilization rate, saves energy, reduces consumption and avoids environmental pollution.
Drawings
FIG. 1 is a schematic view of the waste heat utilizing apparatus of the present utility model.
In the figure, the air inducing pipeline 1, the heat insulating layer 2, the induced draft fan 3, the waste heat boiler 4, the gasification device 5, the steam turbine generator 6, the refrigerator 7, the steam-water heat exchanger 8, the condenser 9, the water storage tank 10, the water supplementing pipeline 11 and the gas generator 12.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The utility model relates to a well site gas power generation waste heat utilization device, which is shown in figure 1, and comprises a plurality of gas generators 12, wherein the gas generators 12 are communicated with an induced air pipeline 1 through pipelines, high-temperature flue gas discharged by the gas generators 12 is introduced into the induced air pipeline 1 to be used as main waste heat, waste heat is uniformly introduced into a waste heat boiler 4, an insulating layer 2 is arranged on the outer side of the induced air pipeline 1, good heat preservation can enable all heat of the flue gas to be discharged outdoors or enter waste heat utilization equipment, on one hand, heat dissipation is avoided, on the other hand, because the induced air pipeline 1 is longer, if the insulating layer 2 is not arranged, the temperature can be reduced too quickly, the flue gas is cooled to below 100 ℃ before being discharged and utilized, and water vapor in the flue gas can be changed into liquid to flow back to an engine, so that an engine cylinder is seriously damaged.
The induced air pipeline 1 is communicated with the exhaust-heat boiler 4 through a pipeline, the induced air pipeline 1 is communicated with the exhaust-heat boiler 4 through a draught fan 3, the draught fan 3 is arranged at the tail end of the pipeline with the largest resistance and used for reducing the back pressure of the pipeline, and the optimized exhaust-heat collecting pipeline can better enable the discharged high-temperature flue gas to be utilized more.
The exhaust-heat boiler 4 has refrigerator 7 through the pipeline intercommunication, and refrigerator 7 can adopt lithium bromide absorption refrigerator, and the last intercommunication respectively of exhaust-heat boiler 4 and refrigerator 7 intercommunication has steam turbine generator 6 and soda heat exchanger 8, and steam turbine generator 6, soda heat exchanger 8 and refrigerator 7 communicate jointly through the steam return line respectively and have condenser 9, and condenser 9 communicates has water storage tank 10, and soda heat exchanger 8 communicates has the cold water pipe, during the use: firstly, the waste heat boiler 4 generates superheated steam and hot water, high-temperature steam of the waste heat boiler 4 enters the steam turbine generator 6 along the air inlet of the steam turbine generator 6 through a high-temperature steam outlet to perform steam power generation, and the generated power is integrated into a power grid of a well team to meet the daily electricity demand; secondly, high-temperature steam of the waste heat boiler 4 enters the refrigerator 7 through a high-temperature steam outlet along a refrigerating air inlet of the refrigerator 7, and a supply well Young Pioneer's Day is commonly used for refrigerating of an air conditioner and the like; thirdly, the flue gas waste heat is used for heat source load, high-temperature steam of the waste heat boiler 4 enters the steam-water heat exchanger 8 through a high-temperature steam outlet along an air inlet of the steam-water heat exchanger 8, and an outlet of the steam-water heat exchanger 8 is connected with a heating pipeline for well Young Pioneer's Day constant heating and hot water requirements. Through the combined cooling and heating mode, the requirements of on-site refrigeration and heating of a well team and domestic hot water can be completely met, obvious economic benefits are achieved, and the water storage tank 10 supplies water to the waste heat boiler 4, so that cyclic utilization is realized.
The waste heat boiler 4 is also communicated with a water supplementing pipeline 11, and when the waste heat boiler is used, high-temperature flue gas collected by the induced air pipeline 1 is uniformly introduced into a connecting inlet of the waste heat boiler 4, and discharged high-temperature flue gas is subjected to heat exchange with cold water input by the water supplementing pipeline 11 externally connected with the waste heat boiler 4 to heat the water, so that supersaturated steam and hot water are generated, the energy utilization efficiency is improved, and the total utilization efficiency of the used energy reaches more than 80%.
One of the gas generators 12 is also communicated with a gasification device 5 through a pipeline, and is communicated with a pipeline between the waste heat boiler 4 and the refrigerator 7 through a pipeline, wherein the gasification device 5 is an air temperature type gasifier or an electric heating type gasifier, the two gasifiers can be mutually standby gasification devices 5, the air temperature type gasifier can be switched to the electric heating type gasifier in a long-time working state, the electric heating type gasifier can be switched to the air temperature type gasifier to work under the condition of no power supply, and the gasified waste heat of the flue gas is used as fuel for gasifying LNG fuel by feeding the gasified waste heat into the engine.
Valves are respectively arranged on pipelines communicated between the waste heat boiler 4 and the steam turbine generator 6, between the waste heat boiler 4 and the refrigerator 7, between the waste heat boiler 4 and the steam-water heat exchanger 8 and between the gasification device 5 and the refrigerator 7, so that flow control can be respectively carried out according to the requirements.
In general, the waste heat boiler type combined cycle without afterburning is the most efficient of various combined cycles, because the input heat is added into the circulating system at a higher temperature of the gas side, and the lithium bromide absorption refrigeration single machine has high refrigeration efficiency, simple operation and little pollution. The hot water type heat exchanger exchanges heat energy to provide hot water or hot gas for the outside and hot water and hot gas for personnel working in the field, so that cogeneration is realized. Therefore, the distributed energy project recommends to adopt the waste heat boiler type combined cycle without afterburning and adopts a lithium bromide absorption refrigerator to form the cogeneration.
Example 1
The well site gas power generation waste heat utilization device comprises a plurality of gas generators 12, wherein the plurality of gas generators 12 are communicated with an induced air pipeline 1 through pipelines, the induced air pipeline 1 is communicated with a waste heat boiler 4 through the pipelines, the induced air pipeline 1 is communicated with a draught fan 3 on the pipeline communicated with the waste heat boiler 4, the waste heat boiler 4 is communicated with a refrigerator 7 through the pipelines, the pipeline communicated with the refrigerator 7 by the waste heat boiler 4 is respectively communicated with a steam turbine generator 6 and a steam-water heat exchanger 8, the steam turbine generator 6, the steam-water heat exchanger 8 and the refrigerator 7 are respectively communicated with a condenser 9 through steam return pipelines, the condenser 9 is communicated with a water storage tank 10, and the waste heat boiler 4 is also communicated with a water supplementing pipeline 11; one of the gas generators 12 is also communicated with a gasification device 5 through a pipeline, and the gasification device 5 is communicated with a refrigerator 7 through a pipeline and a pipeline between the waste heat boiler 4.
The high-temperature flue gas discharged by a plurality of gas generators 12 is used as main waste heat for utilization, the waste heat is uniformly introduced into the waste heat boiler 4, and the waste heat is mainly applied to four directions: the heat supply and the air conditioning refrigeration of gasification LNG, power supply, heating and bathing and the like in summer should fully consider the following factors in the design process of comprehensive utilization: after the cascade utilization of energy sources and the combined cooling, heating and power utilization, the waste heat resources of the gas turbine power supply vehicle are effectively utilized to become available energy sources, and the efficiency can be improved from 30% -40% to 75% -80%.
Example 2
The well site gas power generation waste heat utilization device comprises a plurality of gas generators 12, wherein the plurality of gas generators 12 are communicated with an induced air pipeline 1 through pipelines, the induced air pipeline 1 is communicated with a waste heat boiler 4 through the pipelines, the induced air pipeline 1 is communicated with a draught fan 3 on the pipeline communicated with the waste heat boiler 4, the waste heat boiler 4 is communicated with a refrigerator 7 through the pipelines, the pipeline communicated with the refrigerator 7 by the waste heat boiler 4 is respectively communicated with a steam turbine generator 6 and a steam-water heat exchanger 8, the steam turbine generator 6, the steam-water heat exchanger 8 and the refrigerator 7 are respectively communicated with a condenser 9 through steam return pipelines, the condenser 9 is communicated with a water storage tank 10, and the waste heat boiler 4 is also communicated with a water supplementing pipeline 11; one of the gas generators 12 is also communicated with a gasification device 5 through a pipeline, the gasification device 5 is communicated with a pipeline between the waste heat boiler 4 and the refrigerator 7 through a pipeline, wherein the gasification device 5 is an air temperature type gasifier or an electric heating type gasifier, the two gasifiers can be mutually standby gasification devices 5, the air temperature type gasifier can be switched to the electric heating type gasifier in a long-time working state, the electric heating type gasifier can be switched to the air temperature type gasifier to work under the condition of no power supply, and the gasified waste heat of the flue gas is used as fuel for LNG fuel gasification.
Example 3
The well site gas power generation waste heat utilization device comprises a plurality of gas generators 12, wherein the plurality of gas generators 12 are communicated with an induced air pipeline 1 through pipelines, the induced air pipeline 1 is communicated with a waste heat boiler 4 through the pipelines, the induced air pipeline 1 is communicated with a draught fan 3 on the pipeline communicated with the waste heat boiler 4, the waste heat boiler 4 is communicated with a refrigerator 7 through the pipelines, the pipeline communicated with the refrigerator 7 by the waste heat boiler 4 is respectively communicated with a steam turbine generator 6 and a steam-water heat exchanger 8, the steam turbine generator 6, the steam-water heat exchanger 8 and the lithium bromide refrigerator 7 are respectively communicated with a condenser 9 through steam return pipelines, the condenser 9 is communicated with a water storage tank 10, and the waste heat boiler 4 is also communicated with a water supplementing pipeline 11; one of them gas generator 12 still has gasification equipment 5 through the pipeline intercommunication, gasification equipment 5 is through pipeline and exhaust-heat boiler 4 and the pipeline intercommunication between refrigerator 7, the induced air pipeline 1 outside is provided with heat preservation 2, good heat preservation can let the heat of flue gas all discharge outdoor or all get into waste heat utilization equipment, on the one hand, avoid the heat to scatter and disappear, on the other hand, because induced air pipeline 1 is longer, if there is not heat preservation 2, then the temperature drops too fast, the flue gas just cools to below 100 ℃ before not discharging and utilizing, then the vapor in the flue gas will become liquid and flow backward to the engine, thereby seriously damage the engine cylinder.
Claims (5)
1. The well site gas power generation waste heat utilization device is characterized by comprising a plurality of gas generators (12), wherein the gas generators (12) are communicated with an induced air pipeline (1) through pipelines, the induced air pipeline (1) is communicated with a waste heat boiler (4) through the pipelines, an induced draft fan (3) is communicated with the pipeline which is communicated with the waste heat boiler (4), the waste heat boiler (4) is communicated with a refrigerator (7) through the pipelines, a steam turbine generator (6) and a steam-water heat exchanger (8) are respectively communicated with the pipeline which is communicated with the refrigerator (7), the steam turbine generator (6), the steam-water heat exchanger (8) and the refrigerator (7) are respectively communicated with a condenser (9) through steam return pipelines, the condenser (9) is communicated with a water storage tank (10), and the waste heat boiler (4) is also communicated with a water supplementing pipeline (11). One of the gas generators (12) is also communicated with a gasification device (5) through a pipeline, and the gasification device (5) is communicated with a refrigerator (7) through a pipeline and a pipeline between the waste heat boiler (4).
2. The wellsite gas power generation waste heat utilization device of claim 1, wherein the gasification device (5) is an air temperature gasifier or an electrically heated gasifier.
3. The wellsite gas power generation waste heat utilization device according to claim 1, wherein valves are respectively arranged on pipelines communicated between the waste heat boiler (4) and the steam turbine generator (6), between the waste heat boiler (4) and the refrigerator (7), between the waste heat boiler (4) and the steam-water heat exchanger (8) and between the gasification device (5) and the refrigerator (7).
4. A wellsite gas power generation waste heat utilization device according to claim 1 or 3, wherein an insulating layer (2) is arranged outside the induced air pipeline (1).
5. The wellsite gas power generation waste heat utilization device according to claim 1, wherein the steam-water heat exchanger (8) is communicated with a cold water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323418861.5U CN221322553U (en) | 2023-12-14 | 2023-12-14 | Waste heat utilization device for gas power generation in well site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323418861.5U CN221322553U (en) | 2023-12-14 | 2023-12-14 | Waste heat utilization device for gas power generation in well site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322553U true CN221322553U (en) | 2024-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323418861.5U Active CN221322553U (en) | 2023-12-14 | 2023-12-14 | Waste heat utilization device for gas power generation in well site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221322553U (en) |
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2023
- 2023-12-14 CN CN202323418861.5U patent/CN221322553U/en active Active
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