CN213654932U - Cogeneration device based on natural gas generator - Google Patents

Cogeneration device based on natural gas generator Download PDF

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Publication number
CN213654932U
CN213654932U CN202022814894.1U CN202022814894U CN213654932U CN 213654932 U CN213654932 U CN 213654932U CN 202022814894 U CN202022814894 U CN 202022814894U CN 213654932 U CN213654932 U CN 213654932U
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heat
natural gas
gas generator
source end
pump
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CN202022814894.1U
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付士宾
徐超
姜朋朋
柴泽峰
韩国强
黎锴
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Shandong Shengli Tonghai Group Dongying Tianlan Energy Saving Technology Co ltd
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Shandong Shengli Tonghai Group Dongying Tianlan Energy Saving Technology Co ltd
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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
    • 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 discloses a cogeneration device based on a natural gas generator, which comprises a natural gas generator, a manifold, a afterburning type first-class lithium bromide absorption heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first circulating pump and a second circulating pump; a cylinder sleeve and a smoke outlet are arranged on the natural gas generator, and the cylinder sleeve and a heat source end of the first heat exchanger are connected in series to form a preheating system; a liquid cold source end of the heat pump, a cold source end of the first heat exchanger, the first circulating pump and a heat source end of the third heat exchanger are connected in series to form a waste heat utilization system; a heat source end on the heat pump, a second circulating pump and a cold source end of the second heat exchanger are connected in series to form a heat source water system; and a heat pump gas heat source end header is communicated with a flue gas outlet of the natural gas generator to form a flue gas heating system. The invention can recycle high-temperature hot water in production and heat in high-temperature flue gas generated by the generator, thereby forming a set of complete energy recycling ecological circle.

Description

Cogeneration device based on natural gas generator
Technical Field
The invention relates to the technical field of oil exploitation and refining waste heat utilization, in particular to a combined heat and power device based on a natural gas generator.
Background
At present, a large amount of high-temperature water is generated in petroleum exploitation chemical engineering and refining, the high-temperature water is directly discharged into a wastewater pond for cooling, water treatment or direct reinjection, and the temperature in the high-temperature water is not reasonably recycled; meanwhile, in the well site action, on-site natural gas is generally utilized, a direct-combustion absorption heat pump unit is adopted for supplying heat or an ORC generator unit is adopted for generating electricity, a natural gas generator can generate a large amount of high-temperature smoke when in work, the high-temperature smoke is generally directly treated and then discharged, high temperature is not recycled, in addition, when the generator works, circulating cooling water is needed for cooling the generator, the circulating cooling water also needs to be radiated by a fan, and partial heat is also discharged;
therefore, the inventor wants to design a set of cogeneration device based on a natural gas generator according to the current production operation environment, which not only can recycle the high-temperature hot water in production, but also can recycle the heat in the high-temperature flue gas generated by the generator, thereby forming a set of complete energy recycling ecological cycle.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a cogeneration device based on a natural gas generator, which has a reasonable structure, can reasonably utilize high-temperature hot water generated in the whole oil exploitation and refining production and heat in a power generation device, and the power generated by the power generation device is reused for oil exploitation, refining production and electric appliances used in the device, so that not only is the heat in the production process recycled, but also a complete set of circular ecosphere of electric energy, heat energy and kinetic energy is formed.
The technical scheme of the invention is as follows:
a cogeneration device based on a natural gas generator comprises the natural gas generator, a manifold, a afterburning first-type lithium bromide absorption heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first circulating pump and a second circulating pump;
the natural gas generator is driven by the internal combustion engine and is provided with a cylinder sleeve and a smoke outlet, and the cylinder sleeve is connected with the heat source end of the first heat exchanger in series through a pipeline to form a preheating system;
the afterburning type first-class lithium bromide absorption heat pump is provided with a heat pump liquid cold source end, a heat pump liquid hot source end and a heat pump gas hot source end;
the heat pump liquid cold source end, the cold source end of the first heat exchanger, the first circulating pump and the heat source end of the third heat exchanger are sequentially connected in series through pipelines to form a waste heat utilization system;
the heat pump liquid heat source end is connected with the second circulating pump and the cold source end of the second heat exchanger in series through pipelines to form a heat source water system;
a gas inlet and a gas outlet are arranged on the gas heat source end of the heat pump, the gas inlet is communicated with a flue gas outlet of the natural gas generator through a header, and the gas outlet is communicated with a smoke exhaust pipeline to form a flue gas heating system;
preferably, the natural gas generators are a plurality of natural gas generator sets connected in parallel, and the flue gas outlet of each natural gas generator is connected in parallel with the manifold.
Preferably, a high-temperature automatic regulating valve is mounted on a pipeline connecting a flue gas outlet of each natural gas generator and the header.
Preferably, a plurality of cylinder sleeves in the natural gas generating set are connected in parallel in the preheating system.
Preferably, the heat source water system and the waste heat utilization system are both connected in series with a filter and a water replenishing tank.
Preferably, the waste heat utilization system is further provided with a first standby pump connected with the first circulating pump in parallel, and the heat source water system is further provided with a second standby pump connected with the second circulating pump in parallel.
Preferably, the third heat exchangers are connected in parallel to the waste heat utilization system.
Compared with the prior art, the invention has the following advantages:
when the natural gas generator works through the preheating system, the heat generated by the cylinder sleeve preheats the circulating water in the waste heat utilization system, then the circulating water enters the afterburning type first-class lithium bromide absorption heat pump for absorption and utilization, and meanwhile, the waste heat utilization system plays a role in cooling and protecting the generator after reasonably utilizing the heat in the cylinder sleeve;
when the natural gas generator works, the heat in the generated high-temperature flue gas is conveyed to the afterburning type first-class lithium bromide absorption heat pump for absorption and utilization through the flue gas heating system, and the heat generated when the natural gas generator works in production is recycled to a greater extent;
the heat in the waste heat pipeline in production is conveyed to the afterburning type first-class lithium bromide absorption heat pump for absorption and utilization through the heat source water system, high-temperature circulating water output by the afterburning type first-class lithium bromide absorption heat pump is conveyed to the third heat exchanger through the waste heat utilization system, and the heated pipeline is heated for use after the high-temperature circulating water exchanges heat through the third heat exchanger.
The invention reasonably utilizes the high-temperature hot water generated in the whole oil exploitation and refining and the heat in the power generation device through the preheating system, the waste heat utilization system, the heat source water system and the waste heat utilization system, and the electric power generated by the power generation device is reused for the oil exploitation and refining production and the electric appliances used in the device, thereby not only recycling the heat in the production process, but also forming a set of complete cycle ecosphere of electric energy, heat energy and kinetic energy.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a further preferred embodiment of the present invention;
in the figure: 1. the system comprises a first circulating pump, 2, a first heat exchanger, 3, a natural gas generator, 4, a cylinder sleeve, 5, a header, 6, a afterburning type first-class lithium bromide absorption heat pump, 7, a third heat exchanger, 8, a second heat exchanger, 9, a second circulating pump, 10, a smoke exhaust pipeline, 11, a high-temperature automatic regulating valve, 12, a filter, 13, a water replenishing tank, 14, a first standby pump, 15, a second standby pump, 201, a heat source end of the first heat exchanger, 202, a cold source end of the first heat exchanger, 301, a smoke outlet, 601, a gas inlet, 602, a gas outlet, 603, a heat pump liquid cold source end, 604, a heat pump liquid heat source end, 701, a heat source end of the third heat exchanger, 702, a cold source end of the third heat exchanger, 801, a cold source end of the second heat exchanger, 802 and a heat source end of the second heat exchanger.
Detailed Description
The invention is further illustrated below with reference to the figures and examples.
Example 1
Referring to fig. 1, a cogeneration device based on a natural gas generator includes a natural gas generator 3, a manifold 5, a afterburning first-type lithium bromide absorption heat pump 6, a first heat exchanger 2, a second heat exchanger 8, a third heat exchanger 7, a first circulation pump 1, and a second circulation pump 9.
The natural gas generator 3 is a natural gas generator driven by an internal combustion engine and is provided with a cylinder sleeve 4 and a flue gas outlet 301, and the cylinder sleeve 4 is connected with a heat source end 201 of the first heat exchanger in series through a pipeline to form a preheating system.
The afterburning type first-class lithium bromide absorption heat pump 6 can supplement heat by using combustion of natural gas except smoke and heat source water, and a heat pump liquid cold source end 603, a heat pump liquid heat source end 604 and a heat pump gas heat source end are arranged on the afterburning type first-class lithium bromide absorption heat pump 6.
The heat pump liquid cold source end 603, the cold source end 202 of the first heat exchanger, the first circulating pump 1 and the hot source end 701 of the third heat exchanger are sequentially connected in series through pipelines to form a waste heat utilization system.
The heat pump liquid heat source end 604 is connected in series with the second circulating pump 9 and the cold source end 801 of the second heat exchanger through pipelines to form a heat source water system.
The heat pump gas heat source end is provided with a gas inlet 601 and a gas outlet 602, the gas inlet 601 is communicated with the flue gas outlet 301 of the natural gas generator 3 through a header 5, and the gas outlet 602 is communicated with a smoke exhaust pipeline 10 to form a flue gas heating system.
In the work: firstly, a waste heat pipeline which can generate high-temperature water in oil extraction and refining is connected to a heat source end of a heat source end 802 of a second heat exchanger, then heated pipelines such as an oil pipeline heating pipeline and a heating pipeline are connected with a cold source end 702 of a third heat exchanger, and finally a first circulating pump 1, a second circulating pump 9, a natural gas generator 3 and a afterburning type first-class lithium bromide absorption heat pump 6 are started to drive the whole device.
When the natural gas generator 3 works through the circulating water of the preheating system, the heat generated in the cylinder sleeve 4 preheats the circulating water in the waste heat utilization system, then the circulating water enters the afterburning type first-class lithium bromide absorption heat pump 6 for absorption and utilization, and meanwhile, the waste heat utilization system plays a role in cooling protection for the generator after reasonably utilizing the heat in the cylinder sleeve 4;
when the natural gas generator 3 works through the flue gas heating system, the heat in the generated high-temperature flue gas is conveyed to the afterburning type first-class lithium bromide absorption heat pump 6 for absorption and utilization, and the heat generated when the natural gas generator 3 works in production is recycled to a greater extent;
the heat in the waste heat pipeline in the production is conveyed to the afterburning type first-class lithium bromide absorption heat pump 6 for absorption and utilization through the circulating water in the heat source water system, the high-temperature circulating water output by the afterburning type first-class lithium bromide absorption heat pump 6 is conveyed to the third heat exchanger 7 through the waste heat utilization system, and the heated pipeline is heated and used after the heat exchange is carried out on the high-temperature circulating water through the third heat exchanger 7.
The invention reasonably utilizes the high-temperature hot water generated in the whole oil exploitation and refining and the heat in the power generation device through the preheating system, the flue gas heating system, the heat source water system and the waste heat utilization system, and the electric power generated by the power generator is reused for the oil exploitation and refining production and the electric appliances used in the device, thereby not only recycling the heat in the production process, but also forming a set of complete cycle ecosphere of electric energy, heat energy and kinetic energy.
Example 2
The embodiment is further optimized on the basis of embodiment 1, and specifically comprises the following steps:
referring to fig. 2, the natural gas generators 3 are multiple natural gas generator sets connected in parallel, a flue gas outlet 301 of each natural gas generator 3 is connected in parallel with a manifold 5, multiple cylinder sleeves 4 in the natural gas generator 3 sets are connected in parallel in a preheating system, and by means of the parallel connection of multiple generators, power generation efficiency and heat supply can be greatly improved, and meanwhile, mutual influence among the generators is reduced.
The oil transportation heating pipeline, the domestic heat supply pipeline and the thermal recovery device pipeline can be heated simultaneously through the multiple groups of third heat exchangers 7, so that the production and use efficiency is greatly improved.
Example 3
The embodiment is further optimized on the basis of the embodiment 2, and specifically comprises the following steps:
referring to fig. 2, a high-temperature automatic regulating valve 11 is installed on a pipeline connecting a flue gas outlet 301 of each natural gas generator 3 and the header 5.
Through the increased high-temperature automatic regulating valve 11, when a part of generators in the generator set work, the generator flue which does not work in the generator set is closed, and smoke is prevented from streaming to the generator flue which does not work.
Example 4
The embodiment is further optimized on the basis of embodiment 1 or embodiment 2, and specifically includes:
referring to fig. 2, a filter 12 and a water replenishing tank 13 are connected in series to both the heat source water system and the waste heat utilization system, and impurities in the circulating water can be filtered by the added filter 12, so that the service life is prolonged; the circulating water can be supplemented by the water supplementing tank 13 from time to time, so that the whole circulating system is more reasonable and perfect.
And a first standby pump 14 connected with the first circulating pump 1 in parallel is further arranged on the waste heat utilization system, and a second standby pump 15 connected with the second circulating pump 9 in parallel is further arranged on the heat source water system.
Through increasing the stand-by pump, when the circulating pump that can be in operation breaks down, quick switching to the stand-by pump to reach the effect of continuous high-efficient production.

Claims (7)

1. The utility model provides a cogeneration device based on natural gas generator which characterized in that: the system comprises a natural gas generator, a manifold, a afterburning first-type lithium bromide absorption heat pump, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first circulating pump and a second circulating pump;
the natural gas generator is driven by the internal combustion engine and is provided with a cylinder sleeve and a smoke outlet, and the cylinder sleeve is connected with the heat source end of the first heat exchanger in series through a pipeline to form a preheating system;
the afterburning type first-class lithium bromide absorption heat pump is provided with a heat pump liquid cold source end, a heat pump liquid hot source end and a heat pump gas hot source end;
the heat pump liquid cold source end, the cold source end of the first heat exchanger, the first circulating pump and the heat source end of the third heat exchanger are sequentially connected in series through pipelines to form a waste heat utilization system;
the heat pump liquid heat source end is connected with the second circulating pump and the cold source end of the second heat exchanger in series through pipelines to form a heat source water system;
the heat pump gas heat source end is provided with a gas inlet and a gas outlet, the gas inlet is communicated with a flue gas outlet of the natural gas generator through a header, and the gas outlet is communicated with a smoke exhaust pipeline to form a flue gas heating system.
2. The cogeneration device based on a natural gas generator as claimed in claim 1, wherein: the natural gas generators are a plurality of natural gas generator sets which are connected in parallel, and the smoke outlet of each natural gas generator is connected with the manifold in parallel.
3. The cogeneration device based on a natural gas generator as claimed in claim 2, wherein: and a high-temperature automatic regulating valve is arranged on a pipeline connecting a flue gas outlet of each natural gas generator and the header.
4. The cogeneration device based on a natural gas generator as claimed in claim 2, wherein: and a plurality of cylinder sleeves in the natural gas generator set are connected in parallel in the preheating system.
5. The cogeneration device based on a natural gas generator as claimed in claim 1, wherein: the heat source water system and the waste heat utilization system are both connected in series with a filter and a water replenishing tank.
6. The cogeneration device based on a natural gas generator as claimed in claim 1, wherein: the waste heat utilization system is further provided with a first standby pump connected with the first circulating pump in parallel, and the heat source water system is further provided with a second standby pump connected with the second circulating pump in parallel.
7. The cogeneration device based on a natural gas generator as claimed in claim 1, wherein: and the third heat exchangers are connected in parallel on the waste heat utilization system.
CN202022814894.1U 2020-11-30 2020-11-30 Cogeneration device based on natural gas generator Active CN213654932U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022814894.1U CN213654932U (en) 2020-11-30 2020-11-30 Cogeneration device based on natural gas generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022814894.1U CN213654932U (en) 2020-11-30 2020-11-30 Cogeneration device based on natural gas generator

Publications (1)

Publication Number Publication Date
CN213654932U true CN213654932U (en) 2021-07-09

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Application Number Title Priority Date Filing Date
CN202022814894.1U Active CN213654932U (en) 2020-11-30 2020-11-30 Cogeneration device based on natural gas generator

Country Status (1)

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CN (1) CN213654932U (en)

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