CN209744412U - Associated gas distributed energy system of oil field combined station - Google Patents
Associated gas distributed energy system of oil field combined station Download PDFInfo
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- CN209744412U CN209744412U CN201821882971.3U CN201821882971U CN209744412U CN 209744412 U CN209744412 U CN 209744412U CN 201821882971 U CN201821882971 U CN 201821882971U CN 209744412 U CN209744412 U CN 209744412U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
the utility model provides an oil field united station associated gas distributed energy system, including generating set, power generation switch board, combustion system, flue gas-hot water heat exchanger, PLC automatic control platform, be equipped with the gas inlet pipeline on the combustion system, combustion system links to each other with generating set, generating set links to each other with power generation switch board, the cabinet that is incorporated into the power networks in proper order; the smoke exhaust pipeline of the generator set is provided with a smoke three-way regulating valve, the smoke three-way regulating valve is respectively connected with a smoke-hot water heat exchanger and a smoke bypass pipeline, the other end of the smoke bypass pipeline is connected with a smoke outlet pipeline positioned on one side, far away from the smoke three-way regulating valve, of the smoke-hot water heat exchanger, and the PLC automatic control platform is connected with the smoke three-way regulating valve. The utility model discloses can convert unnecessary associated gas into high-quality electric energy, the flue gas waste heat of production can solve the interior partial heat demand of united station again, reduces heating furnace fuel consumption, has avoided the waste of the energy, has realized energy-conservation.
Description
Technical Field
The utility model relates to a petroleum associated gas is recycled, petrochemical industry and electric power field, concretely relates to oil field united station associated gas distributed energy system.
Background
Oil and natural gas exploration sites, oil refineries, chemical plants and other places which relate to a large amount of volatile organic compounds almost have associated gas. In the process of crude oil exploitation, an oil field combined station is used for collecting, storing, conveying and primarily processing the exploited crude oil and associated gas, and petroleum gas and liquid mixture is input into an oil gas treatment station through a pipeline to be subjected to a series of complex processes such as gas-liquid separation, dehydration treatment or deep processing and the like, and associated gas is separated out and is the 'throat' and 'heart' of crude oil and natural gas output of an oil production plant.
These associated gases have the following characteristics: (1) the displacement is large. For example, the 'sky lamp' in the oil exploitation field of China is emptied every day, the burning-off associated gas is 10 multiplied by 108m3, and the value of the associated gas can reach more than one hundred thousand RMB; (2) the composition is complex. The waste gas discharged in the process of oil exploration and exploitation comprises a plurality of alkane gases such as methane, ethane, propane, isobutane, n-butane, isopentane, n-pentane and the like, and sometimes ethylene and carbon monoxide gas; (4) the pollution is serious. Some of the organic components in the gas discharged from the petroleum and chemical industries are harmful to human bodies and livestock and even have carcinogenic effect, such as benzene, and some gases are greenhouse gases, such as methane, and the greenhouse effect of the gases is 24 times that of carbon dioxide. If these associated gases are discharged directly into the atmosphere, they will cause significant pollution to the atmosphere and must be disposed of.
Because the gas quantity of the separated associated gas is relatively small, the pressure is low, and the recovery of the associated gas is difficult and uneconomical. Although part of the associated gas can be used as fuel of a boiler or a heating furnace and provides heat for pipe network heat tracing, winter heating, station internal temperature maintenance and a heat exchanger of an oil field combined station, the actual utilization rate of the associated gas is very low. In addition, a large amount of residual associated gas is directly discharged into the atmosphere, so that not only is certain potential safety hazard existed, but also the environment is polluted, and meanwhile, the energy is also greatly wasted.
How to effectively utilize associated gas in an oil field combined station and improve economic benefits is a problem needing to be focused and solved in oil exploitation.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an oil field united station associated gas distributed energy system to convert unnecessary associated gas into high-quality electric energy, and the flue gas waste heat of production can solve the interior partial heat utilization requirement of united station again, reduces heating furnace fuel consumption, has avoided the waste of the energy.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
An associated gas distributed energy system of an oil field united station comprises a generator set, a gas inlet pipeline, a combustion system, a flue gas-hot water heat exchanger and a PLC (programmable logic controller) automatic control platform, wherein the combustion system is connected with the generator set, and the generator set is sequentially connected with a power generation control cabinet and a grid-connected cabinet; the gas-water boiler is characterized in that a gas inlet pipeline is arranged on the combustion system, a smoke exhaust pipeline is arranged on the generator set, a smoke three-way regulating valve and a smoke-hot water heat exchanger are sequentially arranged on the smoke exhaust pipeline, the outlet of the smoke three-way regulating valve is respectively connected with the inlet of the smoke-hot water heat exchanger and the inlet of a smoke bypass pipeline, the outlet of the smoke bypass pipeline is connected with the smoke outlet pipeline of the smoke-hot water heat exchanger, and the PLC automatic control platform is connected with the smoke three-way regulating valve.
Furthermore, the flue gas three-way regulating valve is provided with an electric actuating mechanism, and the PLC automatic control platform is electrically connected with the electric actuating mechanism.
Furthermore, the combustion system at least comprises a quick shutoff valve, a filter, a gas flowmeter, a pressure reducing valve and a pressure stabilizing valve.
Furthermore, a gas pretreatment system is arranged on the gas inlet pipeline and comprises dehydration equipment and desulfurization equipment.
Furthermore, the dehydration equipment is a dehydration tank, and the desulfurization equipment is a desulfurization tank.
Furthermore, the flue gas-hot water heat exchanger is any one of a plate-fin flue gas-hot water heat exchanger, a tube type flue gas-hot water heat exchanger or a heat tube type flue gas-hot water heat exchanger.
Further, be equipped with denitration equipment on the exhanst gas outlet pipeline, denitration equipment is located the outlet side of exhanst gas outlet pipeline.
Furthermore, a silencer is further arranged on the flue gas outlet pipeline, and the silencer is positioned on the outlet side of the denitration device far away from the flue gas-hot water heat exchanger.
Furthermore, the associated gas distributed energy system of the oil field combined station further comprises a cylinder sleeve water heat exchanger, and the cylinder sleeve water heat exchanger is connected with a cylinder sleeve water pipeline and a cooling water system of the generator set.
Furthermore, the cylinder sleeve water heat exchanger (13) and the flue gas outlet pipeline (15) are respectively provided with a temperature measuring element and a pressure measuring element, and the temperature measuring element and the pressure measuring element are electrically connected with the PLC automatic control platform (14).
Compared with the prior art, an oil field united station associated gas distributed energy system have following advantage:
(1) The utility model discloses convert unnecessary associated gas into high-quality electric energy, and the flue gas waste heat that produces can solve the interior part of united station again and use hot requirement, reduces heating furnace fuel consumption, has avoided the waste of the energy.
(2) The utility model discloses dewater, denitrogenation preliminary treatment to associated gas, the life that can effectively prolong equipment carries out denitration treatment to the flue gas that the burning produced simultaneously, through pretreatment before the burning and denitration treatment after the burning, can reduce the sulfur dioxide that the fuel burning produced and nitrogen oxide's emission, reaches the emission requirement of national relevant standard.
(3) The utility model discloses a PLC automatic control platform carries out real-time supervision to temperature, pressure in the system, but the return water temperature of accurate control cylinder liner water and discharge flue gas temperature to make high-efficient, the stable operation of system.
(4) The utility model discloses an install the muffler on the flue, can reduce the noise that the system operation produced to a certain extent.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.
Fig. 1 is the schematic diagram of an associated gas distributed energy system of an oil field united station of the present invention.
Description of reference numerals:
The system comprises a silencer-1, a denitration device-2, a flue gas-hot water heat exchanger-3, a flue gas bypass pipeline-4, a flue gas three-way regulating valve-5, a smoke exhaust pipeline-6, a generator set-7, a power generation control cabinet-8, a grid-connected cabinet-9, a dewatering device 10, a desulfurization device 11, a combustion system-12, a cylinder sleeve water heat exchanger-13, a PLC (programmable logic controller) automatic control platform-14, a flue gas outlet pipeline-15, a cylinder sleeve water pipeline 16, a fuel gas pretreatment system-17 and a fuel gas inlet pipeline 18.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
As shown in figure 1, an oil field united station associated gas distributed energy system mainly by combustion system 12, generating set 7, power generation control cabinet 8, the cabinet 9 that is incorporated into the power networks, flue gas three-way control valve 5, PLC automatic control platform 14, gas inlet pipeline 18, exhaust pipe 6, flue gas-hot water heat exchanger 3 and gas pretreatment system 17, the cabinet 9 that is incorporated into the power networks, flue gas by pass pipeline 4, cylinder liner water heat exchanger 13 etc. constitute.
The combustion system 12 is connected with the generator set 7, the generator set 7 is an internal combustion engine generator set, the power generation output end of the generator set 7 is sequentially connected with the power generation control cabinet 8 and the grid-connected cabinet 9, and electric energy generated by power generation is supplied to a station for self use or is merged into a national power grid; the combustion system 12 is provided with a gas inlet pipeline 18, the generator set 7 is provided with a smoke exhaust pipeline 6, the smoke exhaust pipeline 6 is provided with a smoke three-way regulating valve 5, the outlet of the smoke three-way regulating valve 5 is respectively connected with a smoke-hot water heat exchanger 3 and a smoke bypass pipeline 4, the other end of the smoke bypass pipeline 4 is connected with a smoke outlet pipeline 15 which is positioned on one side of the smoke-hot water heat exchanger 3 far away from the outlet of the smoke three-way regulating valve 5, and the PLC automatic control platform 14 is connected with the smoke three-way regulating valve 5.
The combustion system 12 at least comprises a quick shutoff valve, a filter, a gas flowmeter, a pressure reducing valve and a pressure stabilizing valve, and can realize the functions of associated gas metering, pressure reducing, pressure stabilizing and the like.
Gas pretreatment systems 17 establish on the gas inlet pipe 18, including dewatering equipment 10 and sweetener 11, dewatering equipment 10 be the drain sump, as preferred, the utility model discloses a vertical structure's drain sump, the dewatering structure through being equipped with in the jar is used for getting rid of the associated wherein unnecessary moisture, guarantees to get into the associated gas normal water content and satisfies the processing requirement on next step. Desulfurization equipment 11 be the digester, as preferred, the utility model discloses in for the digester of vertical structure, adopt iron oxide or other medium to fall to within the scope that generating set 7 required as the desulfurizer with the hydrogen sulfide content in the associated gas to guarantee that the unit can long-term steady operation.
the flue gas-hot water heat exchanger 3 is any one of a plate-fin flue gas-hot water heat exchanger, a tube type flue gas-hot water heat exchanger or a heat tube type flue gas-hot water heat exchanger. Preferably, the flue gas-hot water heat exchanger 3 of the utility model is a tube type flue gas-hot water heat exchanger, wherein the flue gas passes through a shell pass and the water passes through a tube pass; the inlet and the outlet of the tube pass are provided with shut-off valves, the outlet of the tube pass is connected with a hot water pipe network of the heat unit in the combined station, and medium water in the pipe is powered by a pipeline pump to circulate.
The PLC automatic control platform 14 is electrically connected with an electric actuating mechanism arranged on the smoke three-way regulating valve 5 and a plurality of temperature measuring and load measuring elements in the system. The temperature measuring element is a temperature sensor, and the pressure measuring element is a pressure sensor. The PLC automatic control platform 14 can monitor the temperature of the flue gas entering the denitration device 2 in real time through a temperature measuring element, when the temperature of the flue gas is low, the PLC automatic control platform 14 starts an electric actuating mechanism, so that the discharged flue gas directly enters the denitration device 2 from the flue bypass pipeline 4, the temperature of the flue gas entering the denitration device 2 is further improved, and the minimum temperature required by the catalyst reaction in the denitration device 2 is reached.
Denitration treatment of the discharged flue gas is realized through the denitration device 2 positioned in the flue gas outlet pipeline 15. Preferably, the denitration tank adopts an SCR denitration technology, nitrogen oxides in the flue gas are reduced into nitrogen and water by utilizing the sprayed urea under the action of the catalyst, and the concentration of the nitrogen oxides is controlled to reach a limit value regulated by a national relevant standard.
Still be equipped with muffler 1 on the flue gas outlet pipeline 15, muffler 1 is located denitration device 2 and keeps away from the outlet side of flue gas-hot water heat exchanger 3. The silencer 1 can reduce the noise generated by the system operation to a certain extent and reduce the noise pollution of the system.
The cylinder sleeve water generated in the operation process of the generator set 7 is connected with the cylinder sleeve water heat exchanger 13 and a cooling system pipeline in a combined station through a cylinder sleeve water pipeline 16, an electric valve is arranged on the cooling water system pipeline, a temperature measuring element arranged on the cylinder sleeve water heat exchanger 3 and the electric valve arranged on the cooling water system pipeline are both connected with a PLC automatic control platform 14, and the accurate control of the water return temperature of the cylinder sleeve is realized by adjusting the opening of the electric valve.
Example 2
When the associated gas is used for combustion power generation, redundant associated gas discharged from a three-phase separator of the oil-gas combined station enters a dehydration device 10 through a gas inlet pipeline 18 to remove moisture contained in the associated gas, the dehydrated associated gas enters a desulfurization device 11, iron oxide is used as a desulfurizing agent to remove hydrogen sulfide contained in the associated gas, then the dehydrated associated gas enters a combustion system 12 through a pipeline, pressure is regulated and measured through a pressure reducing valve and a pressure stabilizing valve, the associated gas enters a generator unit 7 for combustion, and steam generated by combustion enters a turbine to do work so as to drive the generator unit 7 to generate power. The generated high-quality electric energy is supplied to the station for self use or network access after passing through the power generation control cabinet 8 and the grid-connected cabinet 9; high-temperature cylinder sleeve water generated by the generator set 7 enters the cylinder sleeve water heat exchanger 13 to exchange heat with cooling water, the PLC automatic control platform 14 detects the return water temperature of the cylinder sleeve water in real time through a temperature measuring element arranged on a cylinder sleeve water pipeline, and the flow of the cooling water is changed by controlling the switch of an electric valve arranged on the cooling water pipeline, so that the return water temperature of the cylinder sleeve water is to be the required temperature.
High-temperature flue gas generated by the generator set 7 enters the flue gas-hot water heat exchanger 3 through the smoke exhaust pipeline 6 to exchange heat with water, and the heated water enters the heat supply pipe network to maintain temperature and heat tracing for the crude oil pipeline. The low-temperature flue gas after heat exchange enters the denitration device 2, the content of nitrogen oxides in the flue gas can meet the emission requirement specified by the relevant national standard through the denitration device 2, and finally the clean flue gas is discharged through a chimney. When the temperature of low temperature flue gas does not reach the required minimum temperature of catalyst reaction in the denitration device 2, then through the electric actuator operation of PLC automatic control platform 14 control three-way control valve, the flue gas can directly get into denitration device 2 from flue gas by-pass pipeline 4 to improve the flue gas temperature who gets into denitration device.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An oil field united station associated gas distributed energy system comprises a generator set (7), a gas inlet pipeline (18), a combustion system (12), a flue gas-hot water heat exchanger (3) and a PLC (programmable logic controller) automatic control platform (14), and is characterized in that the combustion system (12) is connected with the generator set (7), and the generator set (7) is sequentially connected with a power generation control cabinet (8) and a grid-connected cabinet (9); the automatic control system is characterized in that a gas inlet pipeline (18) is arranged on the combustion system (12), a smoke exhaust pipeline (6) is arranged on the generator set (7), a smoke three-way regulating valve (5) and a smoke-hot water heat exchanger (3) are sequentially arranged on the smoke exhaust pipeline (6), the outlet of the smoke three-way regulating valve (5) is respectively connected with the inlet of the smoke-hot water heat exchanger (3) and the inlet of a smoke bypass pipeline (4), the outlet of the smoke bypass pipeline (4) is connected with a smoke outlet pipeline (15) of the smoke-hot water heat exchanger (3), and the PLC automatic control platform (14) is connected with the smoke three-way regulating valve (5).
2. the associated gas distributed energy system of the oilfield combination station according to claim 1, wherein the flue gas three-way regulating valve (5) is provided with an electric actuator, and the PLC automatic control platform (14) is electrically connected with the electric actuator.
3. The oilfield associated station associated gas distributed energy system of claim 1, wherein the combustion system (12) comprises at least a quick shut-off valve, a filter, a gas flow meter, a pressure reducing valve, and a pressure maintaining valve.
4. The associated gas distributed energy system of the oilfield combination station according to claim 1, wherein a gas pretreatment system (17) is disposed on the gas inlet pipeline (18), and the gas pretreatment system (17) comprises a dehydration device (10) and a desulfurization device (11).
5. The oilfield associated station associated gas distributed energy system according to claim 4, wherein the dehydration equipment (10) is a dehydration tank and the desulfurization equipment (11) is a desulfurization tank.
6. The oilfield combined station associated gas distributed energy system according to claim 1, wherein the flue gas-hot water heat exchanger (3) is any one of a plate-fin flue gas-hot water heat exchanger, a tube type flue gas-hot water heat exchanger or a heat tube type flue gas-hot water heat exchanger.
7. The oilfield combined station associated gas distributed energy system according to claim 1, wherein a denitration device (2) is further disposed on the flue gas outlet pipeline (15), and the denitration device (2) is located at an outlet side of the flue gas outlet pipeline (15).
8. The oilfield combined station associated gas distributed energy system according to claim 7, wherein a silencer (1) is further arranged on the flue gas outlet pipeline (15), and the silencer (1) is located at the outlet side of the denitration device (2).
9. The oilfield combination station associated gas distributed energy system according to claim 1, further comprising a cylinder liner water heat exchanger (13), wherein the cylinder liner water heat exchanger (13) is used for realizing heat exchange between cylinder liner water of the generator set and the cooling system.
10. The associated gas distributed energy system of the oil field united station as claimed in claim 9, wherein the cylinder liner water heat exchanger (13) and the flue gas outlet pipeline (15) are both provided with a temperature measuring element and a pressure measuring element, and the temperature measuring element and the pressure measuring element are electrically connected with the PLC automatic control platform (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821882971.3U CN209744412U (en) | 2018-11-15 | 2018-11-15 | Associated gas distributed energy system of oil field combined station |
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| CN201821882971.3U CN209744412U (en) | 2018-11-15 | 2018-11-15 | Associated gas distributed energy system of oil field combined station |
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| CN209744412U true CN209744412U (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120980A (en) * | 2020-01-06 | 2020-05-08 | 华中科技大学 | Cogeneration system and method for realizing efficient waste heat recovery and low nitrogen emission |
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2018
- 2018-11-15 CN CN201821882971.3U patent/CN209744412U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120980A (en) * | 2020-01-06 | 2020-05-08 | 华中科技大学 | Cogeneration system and method for realizing efficient waste heat recovery and low nitrogen emission |
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