CN217464389U - Comprehensive energy boiler system suitable for steam injection oil production - Google Patents
Comprehensive energy boiler system suitable for steam injection oil production Download PDFInfo
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- CN217464389U CN217464389U CN202221523341.3U CN202221523341U CN217464389U CN 217464389 U CN217464389 U CN 217464389U CN 202221523341 U CN202221523341 U CN 202221523341U CN 217464389 U CN217464389 U CN 217464389U
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Abstract
The utility model discloses a comprehensive energy boiler system suitable for annotate steam oil recovery, include: the steam boiler comprises a steam outlet, a water inlet and a sewage draining outlet, wherein the steam outlet is communicated to a steam pipe network, the water inlet is communicated with a tap water pipe, and the sewage draining outlet is communicated to a boiler water draining pipe; the boiler water replenishing tank is connected in series with the tap water pipe, and a deaerator is arranged between the outlet of the boiler water replenishing tank and the water inlet of the steam boiler; the flue gas waste heat recovery device is arranged on a chimney of the steam boiler, and a water circulation loop is formed between the flue gas waste heat recovery device and a boiler water replenishing tank; a water circulation loop is formed between the photo-thermal collector and the boiler water replenishing tank; the inlet of the heat storage device is communicated with the boiler water discharge pipe and is used for collecting the heat of the sewage discharged by the steam boiler; and a water circulation loop is formed between the boiler water replenishing tank and the boiler water replenishing tank. It has solved the steam boiler that current steam oil recovery used and has had the problem that the energy consumption is higher, waste heat is extravagant.
Description
Technical Field
The utility model belongs to the technical field of steam oil recovery, concretely relates to comprehensive energy boiler system suitable for annotate steam oil recovery.
Background
China has abundant thick oil resources and is distributed in a plurality of oil fields throughout the country. However, the viscous oil is high in viscosity, so that the viscous oil cannot be exploited by a conventional method, and the full utilization of resources is influenced. Many methods have been proposed and tested for the production of heavy oil, but the steam injection oil production method is widely used at present. The steam injection oil production method is to utilize hot steam to bring heat energy into an oil layer to raise the temperature of crude oil in the stratum, reduce the viscosity of the crude oil, increase the volume coefficient of the crude oil in the stratum and enable the thick oil to be smoothly pumped to the ground. Steam injection oil extraction can be divided into two processes of steam swallowing and steam flooding.
Steam injection oil recovery is that high-temperature steam is used as heat-carrying fluid and driving medium, and is continuously injected into oil layer from injection well, and the steam continuously heats the oil layer so as to greatly reduce the viscosity of crude oil in stratum. The injected steam becomes a hot fluid in the formation, driving the crude oil around the production wells and being produced to the surface.
The exploitation crude oil needs to consume a large amount of high-pressure steam, and the steam consumption can be continuously increased along with the development time, under the ordinary condition, in order to satisfy the crude oil exploitation demand, the oil production plant can set up many large capacity steam boilers, but the energy consumption level in the plant area is higher, and there is the waste of many energy utilization.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a comprehensive energy boiler system suitable for annotate steam oil recovery to solve the steam boiler that current steam oil recovery used and have the problem that the energy consumption is higher, waste heat is extravagant.
The utility model adopts the following technical scheme: an integrated energy boiler system adapted for steam injection oil recovery, comprising:
the steam boiler comprises a steam outlet, a water inlet and a sewage draining outlet, wherein the steam outlet is communicated to a steam pipe network, the water inlet is communicated with a tap water pipe, and the sewage draining outlet is communicated to a boiler water draining pipe;
the boiler water replenishing tank is connected in series with the tap water pipe, and a deaerator is arranged between the outlet of the boiler water replenishing tank and the water inlet of the steam boiler;
the flue gas waste heat recovery device is arranged on a chimney of the steam boiler, and a water circulation loop is formed between the flue gas waste heat recovery device and the boiler water replenishing tank and used for collecting flue gas waste heat and heating water in the boiler water replenishing tank by utilizing the flue gas waste heat;
the solar-thermal collector and the boiler water replenishing tank form a water circulation loop, and the water circulation loop is used for collecting solar energy photo-heat and heating water stored in the boiler water replenishing tank by utilizing the photo-heat;
the inlet of the heat storage device is communicated with the boiler water discharge pipe and is used for collecting the heat of the sewage discharged by the steam boiler; a water circulation loop is formed between the water tank and the boiler water replenishing tank and is used for heating water stored in the boiler water replenishing tank by using the heat of discharged sewage;
wherein, the flue gas waste heat recovery device is always communicated with a water circulation loop of a boiler water replenishing tank; a water circulation loop between the photo-thermal collector and the boiler water replenishing tank is communicated when the illumination resources are good; the pipeline between the heat storage device and the boiler water discharge pipe is always communicated, and the water circulation loop between the heat storage device and the boiler water replenishing tank is communicated when the photo-thermal collector is not used.
Furthermore, a communication pipeline is arranged between the deaerator and the steam pipe network and is used for leading out partial steam from the steam pipe network to carry out water supplementing, spraying and deaerating; a fourteenth valve is arranged on the communicating pipeline;
the fourteenth valve is used for increasing the opening when the water inlet temperature of the deaerator is lower than 70 ℃ so as to increase the steam amount sent into the deaerator; and the opening degree is reduced when the water inlet temperature of the deaerator is higher than 70 ℃ so as to reduce the amount of steam sent into the deaerator.
Further, a diffusing pipe is arranged on the deaerator, and a stainless steel umbrella cap is arranged at the top of the diffusing pipe.
Furthermore, the heat storage device is a sewage storage tank with a heat preservation function or a heat bin with energy storage materials.
Furthermore, one end of the boiler drain pipe is provided with a twenty-third valve which is used for draining the sewage of the boiler drain pipe under the opening state; the bottom of the heat storage device is provided with a drainage pipeline, the drainage pipeline is provided with a nineteenth valve, and the nineteenth valve is used for discharging sewage subjected to heat exchange by the heat storage device in an opening state.
Furthermore, the boiler water replenishing tank is provided with two independent water storage areas, and liquid level sensors and temperature sensors are respectively installed on the two independent water storage areas.
Furthermore, a plurality of steam boilers are arranged in parallel, the steam outlet of each steam boiler is gathered to a steam pipe network, the drain outlet of each steam boiler is gathered to a boiler drain pipe, and the water inlet of each steam boiler is communicated with a tap water pipe; and a chimney of each steam boiler is provided with a flue gas waste heat recovery device, and each flue gas waste heat recovery device and the boiler water replenishing tank form an independent water circulation loop.
The utility model has the advantages that: the smoke waste heat recovery system is arranged to utilize waste heat of the steam boiler, the photo-thermal system is arranged to introduce photo-thermal energy when the light is good, the heat storage and heat exchange system is arranged to recover waste heat of sewage discharged by the steam boiler, and the heat can be used for supplementing water to the boiler to heat, so that the energy consumption of the steam boiler is reduced.
Drawings
Fig. 1 is a schematic diagram of the system structure of the comprehensive energy boiler system suitable for steam injection oil recovery.
The system comprises a steam boiler 1, a deaerator 2, a boiler water replenishing tank 3, a photo-thermal heat collector 4, a flue gas waste heat recovery device 5, a heat storage device 6, a sewage heat exchanger 7, an eighth valve 8, a ninth valve 9, a tenth valve 10, a tenth valve 11, an eleventh valve 12, a twelfth valve 13, a thirteenth valve 14, a fourteenth valve 15, a blow-off pipe 16, a sixteenth water pump 17, a seventeenth water pump 18, an eighteenth valve 19, a nineteenth valve 21, a twenty-first valve 21, a twenty-second valve 22, a twenty-second valve 23, an exhaust pipe 24, a steam pipe network 25, a boiler drain pipe 26 and a tap water pipe 27.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a comprehensive energy boiler system suitable for annotate steam oil recovery, as shown in fig. 1, including steam boiler 1, boiler moisturizing case 3, flue gas waste heat recovery device 5, light and heat collector 4 and heat-retaining device 6.
The steam boiler 1 comprises a steam outlet, a water inlet and a sewage draining outlet, wherein the steam outlet is communicated to a steam pipe network 25, the water inlet is communicated with a tap water pipe 27, and the sewage draining outlet is communicated to a boiler water draining pipe 26. Steam pipe network 25 is used to provide high temperature steam for steam recovery.
The boiler water replenishing tank 3 is connected in series with a tap water pipe 27, and a deaerator 2 is arranged between the outlet of the boiler water replenishing tank and the water inlet of the steam boiler 1. A twenty-first valve 22 is arranged on an inlet pipeline of the boiler water replenishing tank 3, and a twenty-first-low valve 21 is arranged between the boiler water replenishing tank 3 and the deaerator 2. The boiler water replenishing tank 3 has certain deoxidization capacity, the exhaust pipe 24 is arranged at the top of the boiler water replenishing tank 3, when the water in the boiler water replenishing tank 3 is raised to 60-70 ℃, the solubility of oxygen in water is reduced, and part of oxygen is dissipated through the exhaust pipe 24. An exhaust pipe 24 is arranged on the boiler water replenishing tank 3, the boiler water replenishing tank 3 is a closed heat preservation water tank, and the connection with the atmosphere is needed to discharge gas overflowing from water after the water temperature rises.
The flue gas waste heat recovery device 5 is arranged on a chimney of the steam boiler 1, and a water circulation loop is formed between the flue gas waste heat recovery device and the boiler water replenishing tank 3 and is used for collecting flue gas waste heat and heating water in the boiler water replenishing tank 3 by utilizing the flue gas waste heat.
A water circulation loop is formed between the photo-thermal collector 4 and the boiler water replenishing tank 3 and is used for collecting solar photo-heat and heating water stored in the boiler water replenishing tank 3 by utilizing the photo-heat. The photothermal heat collector 4 and the recovery pipeline of the flue gas waste heat recovery device 5 can be connected in parallel, a sixteenth water pump 16 is arranged on the parallel pipeline, and the sixteenth water pump 16 is shared to control whether the parallel pipeline is communicated or not.
The inlet of the heat storage device 6 is communicated with a boiler water discharge pipe 26 and is used for collecting the heat of the sewage discharged by the steam boiler 1; the heat storage device 6 is provided with a sewage heat exchanger 7, a water circulation loop is formed between the sewage heat exchanger 7 and the boiler water replenishing tank 3, and the heat storage device 6 is used for heating water stored in the boiler water replenishing tank 3 by utilizing heat of discharged sewage. The heat storage device 6 can adapt to the fluctuant sewage discharge amount, continuously collects the heat in the boiler sewage discharge, when the heat is accumulated to a certain temperature or the boiler water replenishing 3 tank needs the heat, the tenth valve 10, the eleventh valve 11 and the seventeenth water pump 17 are opened, the boiler water replenishing in the boiler water replenishing tank 3 enters the heat storage device 6 for heat exchange, and the temperature of the water replenishing is improved. A tenth valve 10 and an eleventh valve 11 are respectively arranged on two back-and-forth pipelines forming a water circulation loop between the heat storage device 6 and the boiler water replenishing tank 3.
When the comprehensive energy boiler system suitable for steam injection oil extraction works, the flue gas waste heat recovery device 5 is always communicated with the water circulation loop of the boiler water replenishing tank 3; a water circulation loop between the photo-thermal collector 4 and the boiler water replenishing tank 3 is communicated when the illumination resources are good; the heat storage device 6 is always communicated with a pipeline between the boiler water discharge pipe 26, and is communicated with a water circulation loop between the boiler water replenishing tank 3 when the photo-thermal collector 4 is not used.
A twelfth valve 12 and a thirteenth valve 13 are respectively arranged on two back-and-forth pipelines forming a water circulation loop between the flue gas waste heat recovery device 5 and the boiler water replenishing tank 3. When the steam boiler 1 is started, the twelfth valve 12, the thirteenth valve 13 and the sixteenth water pump 16 are started, and the flue gas waste heat recovery device 5 works to continuously provide heat for the boiler water replenishing tank 3.
An eighth valve 8 and a ninth valve 9 are respectively arranged on a reciprocating two-way pipe which forms a water circulation loop between the photo-thermal collector 4 and the boiler water replenishing tank 3. The better period of day light condition, eighth valve 8, ninth valve 9 and sixteenth water pump 16 open, and light and heat collector 4 works, provides the heat for boiler moisturizing case 3. Under the condition that any system in the flue gas waste heat recovery system, the photo-thermal system and the heat storage and exchange system needs to be stopped, the system can be cut off in time without influencing the normal work of the original steam system.
In some embodiments, a communication pipeline is arranged between the deaerator 2 and the steam pipe network 25, and is used for leading out part of steam from the steam pipe network 25 to perform water supplementing spraying deaerating. And a fourteenth valve 14 is arranged on the communication pipeline, and the fourteenth valve 14 is a normally open valve. A fourteenth valve 14, configured to increase the opening degree when the water inlet temperature of the deaerator 2 is lower than 70 degrees celsius, so as to increase the amount of steam sent into the deaerator 2; and the opening degree is also reduced when the water inlet temperature of the deaerator 2 is higher than 70 ℃ so as to reduce the amount of steam sent into the deaerator 2.
The middle part of the deaerator 2 introduces a part of high-temperature steam in a steam pipe network 25 through a pipeline and a fourteenth valve 14 to heat, spray and supplement water, and the opening degree of the fourteenth valve 14 is controlled by the feed water temperature of an inlet boiler of the deaerator 2; the deaerator 2 can further reduce the dissolved oxygen in the boiler make-up water by heating the spray water through steam, further improve the boiler feed water temperature, and remove free carbon dioxide and nitrogen in the water.
In some embodiments, the deaerator 2 is provided with a diffusing pipe 15, and a stainless steel umbrella cap is arranged on the top of the diffusing pipe 15. A part of the condensed water is recovered on site.
In some embodiments, the heat storage device 6 is a sewage storage tank with heat preservation function, or a heat bin with energy storage material. The heat storage device is internally provided with a heat exchange coil, and a water inlet pipe and a water outlet pipe of the heat exchange coil are connected with a boiler water replenishing tank through a valve 10 and a valve 11. The heat storage device can store heat in the boiler sewage by introducing the boiler sewage, and can release the heat to heat the boiler for water supplement. An eighteenth valve 18 is arranged on a pipeline of the inlet of the heat storage device 6 communicated with the boiler water discharge pipe 26.
In some embodiments, a twenty-third valve 23 is disposed at one end of the boiler water discharge pipe 26, and the twenty-third valve 23 is used for discharging the sewage of the boiler water discharge pipe 26 therethrough in an open state; the bottom of the heat storage device 6 is provided with a drainage pipeline, the drainage pipeline is provided with a nineteenth valve 19, and the nineteenth valve 19 is used for discharging sewage after heat exchange of the heat storage device 6 in an opening state.
One end of the boiler water discharge pipe 26 is provided with a twenty-third valve 23, and sewage of the boiler water discharge pipe 26 can be directly discharged through the twenty-third valve 23; the bottom of the heat storage device 6 is provided with a drainage pipeline, and the drainage pipeline is provided with the nineteenth valve 19, so that the boiler drainage pipe 26 can also drain sewage after heat exchange through the heat storage device 6 through the nineteenth valve 19, and the normal working operation of the original system is not influenced.
If the heat storage device 6 is a sewage storage tank in the form of a water tank, the eighteenth valve 18, the nineteenth valve 19 and the twentieth valve 23 are controlled by signals from a liquid level sensor in the water tank of the heat storage device 6. If the heat storage device 6 is a heat bin with energy storage material, the eighteenth valve 18, the nineteenth valve 19 and the twentieth valve 23 are controlled by the temperature sensor signal of the sewage main pipe network.
In some embodiments, the boiler makeup tank 3 has two independent water storage areas, and each is equipped with a liquid level and temperature sensor. A twentieth valve 22 is arranged on an inlet pipeline of the boiler water replenishing tank 3, and the liquid level sensor sends a command to guide the opening and closing of the twentieth valve 22. The volume of the boiler water replenishing tank 3 is determined according to the water replenishing amount stored for 1.5-2.0 hours, and the treatment capacity of matched softened water is considered to be about 50% larger than the total evaporation capacity of the boiler.
In some embodiments, a plurality of steam boilers 1 are arranged in parallel, the steam boilers 1 can be one or a plurality of boilers in an integrated group, the plurality of boilers are in parallel relation, and the fuel of the boilers can be electricity, natural gas, coal, crude oil and the like. The steam outlet of each steam boiler 1 is gathered to a steam pipe network 25, the drain outlet of each steam boiler 1 is gathered to a boiler drain pipe 26, and the water inlet of each steam boiler 1 is communicated with a tap water pipe 27; the chimney of each steam boiler 1 is provided with a flue gas waste heat recovery device 5, and each flue gas waste heat recovery device 5 and the boiler water replenishing tank 3 form an independent water circulation loop. All the flue gas waste heat recovery devices 5 are connected in parallel, and water supplement in the boiler water supplement tank 3 is sent into the flue gas waste heat recovery devices 5 through a pipeline to exchange heat with the flue gas of the boiler.
When the steam boiler 1 is started, the flue gas waste heat recovery device 5 works to continuously provide heat for the boiler water replenishing tank 3; the valve on the pipeline for communicating the steam boiler 1 and the boiler water replenishing tank 3 which are not opened is closed, so that the heat loss is prevented. The opening degree of the sixteenth water pump 16 is controlled by the opening quantity of the flue gas waste heat recovery device 5 and the photo-thermal heat collector 4 and the rated flow rate of the equipment.
The utility model discloses an operation mode of synthesizing energy boiler system suitable for annotate steam oil recovery does: in the time period with good illumination resources in the daytime, the eighth valve 8, the ninth valve 9, the twelfth valve 12 and the thirteenth valve 13 are opened, the photothermal heat collector 4 and the flue gas waste heat recovery device 5 work simultaneously, and the sixteenth water pump 16 runs at high frequency to provide heat for the boiler water replenishing tank 3. Meanwhile, the eighteenth valve 18 is opened, the twentieth valve 23 is closed, boiler drainage preferentially enters the heat storage device 6, waste heat of the sewage is stored and then is drained through the nineteenth valve 19, and the tenth valve 10, the eleventh valve 11 and the seventeenth water pump 17 are closed. At the moment, the heat of the boiler water supplement is completely derived from the photo-thermal heat collector 4 and the flue gas waste heat recovery device 5, the temperature of the boiler water supplement is increased to about 70 ℃, and the boiler water supplement is sent into the deaerator 2 to be sprayed and deaerated and then sent into the boiler to prepare steam.
When the temperature of the inlet water entering the deaerator 2 is lower than 70 ℃, the opening degree of the fourteenth valve 14 is increased, and the amount of steam sent into the deaerator 2 is increased; when the inlet water temperature is higher than 70 ℃, the opening degree of the fourteenth valve 14 is reduced, and the amount of steam sent into the deaerator 2 is reduced.
When the illumination condition is not enough, eighth valve 8 and ninth valve 9 are closed, the 16 frequency of sixteenth water pump reduces, thereby the control flow, only satisfy flue gas waste heat recovery flow can, tenth valve 10, eleventh valve 11 and seventeenth water pump 17 are opened, draw out the water in the heating boiler moisturizing case 3 through the heat of hydrologic cycle in with heat-retaining dress 6, this moment, the heat of boiler moisturizing is whole to be derived from flue gas waste heat recovery device 5 and the heat-retaining device 6 of boiler blow off water, the control mode of oxygen-eliminating device 2 is unanimous when sufficient with illumination.
Claims (7)
1. An integrated energy boiler system suitable for steam injection oil recovery, comprising:
the steam boiler (1) comprises a steam outlet, a water inlet and a sewage draining outlet, wherein the steam outlet is communicated to a steam pipe network (25), the water inlet is communicated with a tap water pipe (27), and the sewage draining outlet is communicated to a boiler water draining pipe (26);
the boiler water replenishing tank (3) is connected in series to the tap water pipe (27), and a deaerator (2) is arranged between the outlet of the boiler water replenishing tank and the water inlet of the steam boiler (1);
the flue gas waste heat recovery device (5) is arranged on a chimney of the steam boiler (1), and a water circulation loop is formed between the flue gas waste heat recovery device and the boiler water replenishing tank (3) and is used for collecting flue gas waste heat and heating water in the boiler water replenishing tank (3) by utilizing the flue gas waste heat;
a photo-thermal collector (4) which forms a water circulation loop with the boiler water replenishing tank (3) and is used for collecting solar photo-thermal and heating water stored in the boiler water replenishing tank (3) by utilizing the photo-thermal;
a heat storage device (6) with an inlet communicated with the boiler drain pipe (26) and used for collecting heat of sewage discharged by the steam boiler (1); a water circulation loop is formed between the water tank and the boiler water replenishing tank (3) and is used for heating water stored in the boiler water replenishing tank (3) by using the heat of the discharged sewage;
the flue gas waste heat recovery device (5) is always communicated with a water circulation loop of the boiler water replenishing tank (3); a water circulation loop between the photo-thermal collector (4) and the boiler water replenishing tank (3) is communicated when the illumination resources are good; the heat storage device (6) is communicated with a pipeline between boiler drain pipes (26) all the time, and the photo-thermal heat collector (4) is communicated with a water circulation loop between boiler water replenishing tanks (3) when not used.
2. The comprehensive energy boiler system suitable for steam injection oil recovery as recited in claim 1, wherein a communication pipeline is arranged between the deaerator (2) and the steam pipe network (25) and is used for leading out part of steam from the steam pipe network (25) to carry out water supplementing, spraying and deaerating; a fourteenth valve (14) is arranged on the communicating pipeline;
the fourteenth valve (14) is used for increasing the opening degree when the water inlet temperature of the deaerator (2) is lower than 70 ℃ so as to increase the amount of steam sent into the deaerator (2); and the opening degree of the deaerator (2) is reduced when the water inlet temperature is higher than 70 ℃, so that the amount of steam sent into the deaerator (2) is reduced.
3. An integrated energy boiler system suitable for steam injection oil extraction as defined in claim 1 or 2, characterized in that the deaerator (2) is provided with a diffusing pipe (15), and the top of the diffusing pipe (15) is provided with a stainless steel umbrella cap.
4. An integrated energy boiler system suitable for steam injection oil production as defined in claim 1 or 2, characterized in that the heat storage device (6) is a sewage storage tank with heat preservation function or a heat bin with energy storage material.
5. An integrated energy boiler system suitable for steam injection oil recovery according to claim 1 or 2, characterized in that one end of the boiler drain pipe (26) is provided with a twenty-third valve (23), and the twenty-third valve (23) is used for draining the sewage of the boiler drain pipe (26) in an open state; the bottom of heat storage device (6) sets up drainage pipe, set up nineteenth valve (19) on the drainage pipe, nineteenth valve (19) are used for under the open mode, will be through the sewage discharge after heat transfer of heat storage device (6).
6. An integrated energy boiler system suitable for steam injection oil recovery according to claim 1 or 2, characterized in that the boiler makeup tank (3) has two independent water storage areas and is equipped with level and temperature sensors respectively.
7. An integrated energy boiler system suitable for steam injection oil recovery as defined in claim 1 or 2, characterized in that a plurality of said steam boilers (1) are arranged in parallel, the steam outlet of each said steam boiler (1) is gathered to said steam pipe network (25), the sewage outlet of each said steam boiler (1) is gathered to a boiler drain pipe (26), the water inlet of each said steam boiler (1) is communicated with a tap water pipe (27); and a chimney of each steam boiler (1) is provided with a flue gas waste heat recovery device (5), and each flue gas waste heat recovery device (5) and the boiler water replenishing tank (3) form an independent water circulation loop.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221523341.3U CN217464389U (en) | 2022-06-17 | 2022-06-17 | Comprehensive energy boiler system suitable for steam injection oil production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221523341.3U CN217464389U (en) | 2022-06-17 | 2022-06-17 | Comprehensive energy boiler system suitable for steam injection oil production |
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| CN217464389U true CN217464389U (en) | 2022-09-20 |
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| CN202221523341.3U Active CN217464389U (en) | 2022-06-17 | 2022-06-17 | Comprehensive energy boiler system suitable for steam injection oil production |
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- 2022-06-17 CN CN202221523341.3U patent/CN217464389U/en active Active
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