CN114353047A - Carbon dioxide storage deep burying device using carbon neutralization - Google Patents
Carbon dioxide storage deep burying device using carbon neutralization Download PDFInfo
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- CN114353047A CN114353047A CN202111591532.3A CN202111591532A CN114353047A CN 114353047 A CN114353047 A CN 114353047A CN 202111591532 A CN202111591532 A CN 202111591532A CN 114353047 A CN114353047 A CN 114353047A
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Abstract
The invention discloses a carbon dioxide storage deep burying device applying carbon neutralization, which comprises a liquid-phase carbon dioxide storage tank, a canned pump, a high-pressure pump, a heat exchanger and a boiler, wherein the output end of the liquid-phase carbon dioxide storage tank is divided into a gas phase and a liquid phase, wherein one path of the liquid phase passes through a plurality of stop valves, high-low pressure manifolds and canned pumps to a first inlet end of the high-pressure pump, one path of the gas phase passes through a plurality of stop valves and back pressure valves to a second inlet end of the high-pressure pump and reaches the outlet end of the high-pressure pump through a reflux valve, the outlet end of the high-pressure pump reaches the input end of the heat exchanger through a first one-way valve, and the output end of the heat exchanger passes through a second one-way valve and is communicated with a well mouth for pressure injection pump; the output hot water end of the boiler is connected with the circulating pipeline of the heat exchanger through a hot water pump. The invention has simple and compact structure and low use cost, liquefies, stores and buries the carbon dioxide deep underground, and has wide obvious effect on the aspects of preventing the temperature of the earth from rising, preventing the sea level from rising continuously and the like.
Description
Technical Field
The invention relates to a carbon dioxide emission reduction device, in particular to a device for deeply burying stored liquid-phase and gas-phase mixed carbon dioxide after heating liquid-phase liquid phase, and belongs to the technical field of environmental protection.
Background
The global average temperature is rising continuously due to the increasing emission of gaseous carbon dioxide. If no active carbon dioxide reduction measures are taken, the average global air temperature will continue to increase by 1.4 ℃ to 5.8 ℃ from now on to 2100 years, at which time the antarctic glaciers will melt more rapidly, the sea level will rise so far as to threaten the safety of many islands on the pacific, indian ocean, and cause the prevalence and spread of some diseases associated with warm climates such as malaria, dengue fever, and may also induce frequent occurrences of extreme climates such as drought and flooding. The steep rise in global temperature has affected the lives of most people and the lives of a few people. Therefore, how to recover carbon dioxide and isolate the carbon dioxide from the atmosphere is one of effective ways for reducing the emission of carbon dioxide.
The existing recovered liquefied carbon dioxide is generally applied to carbon dioxide arc welding and carbonated beverages, and the recovery and utilization method essentially discharges the carbon dioxide into the atmosphere for the second time, and does not fundamentally solve the problem of carbon dioxide emission.
Disclosure of Invention
The invention aims to provide a carbon dioxide storage deep burying device applying carbon neutralization.
The purpose of the invention is realized by the following technical scheme:
a carbon dioxide storage deep burying device applying carbon neutralization comprises a liquid-phase carbon dioxide storage tank, a canned pump, a high-pressure pump, a heat exchanger and a boiler, wherein the output end of the liquid-phase carbon dioxide storage tank is divided into a gas phase and a liquid phase, one path of the liquid phase passes through a plurality of stop valves, a high-pressure manifold, a low-pressure manifold and a canned pump to a first inlet end of the high-pressure pump, and one path of the gas phase passes through a plurality of stop valves and a backpressure valve to a second inlet end of the high-pressure pump and reaches the outlet end of the high-pressure pump through a reflux valve; the outlet end of the high-pressure pump reaches the input end of the heat exchanger through a first one-way valve, and the output end of the heat exchanger is communicated with a wellhead pressure injection pump through a second one-way valve; the output hot water end of the boiler is connected with the circulating pipeline of the heat exchanger through a hot water pump. And one path of the gas phase is respectively connected with a first pressure relief valve and a third pressure relief valve, and one path of the liquid phase is respectively connected with a second pressure relief valve and a fourth pressure relief valve.
The object of the invention is further achieved by the following technical measures.
The carbon dioxide storage deep burying device applying carbon neutralization is characterized in that the outlet pressure of the shielding pump is 0.1-0.15MPa higher than the inlet pressure of the shielding pump.
According to the invention, the liquid-phase carbon dioxide in the storage tank is pumped into the high-pressure pump through the shielding pump, so that the high-pressure pump is further cooled and approaches to the phase temperature point of the liquid-phase carbon dioxide in the storage tank, and the pipeline blockage caused by the generation of vaporized ice at the connecting part of the manifold and the equipment can be prevented. The liquid-phase carbon dioxide is heated by the heat exchanger to quickly raise the temperature of the liquid-phase carbon dioxide to saturation temperature for gasification, and under the pumping pressure of the wellhead pressure injection pump, the liquid-phase carbon dioxide and the gas-phase carbon dioxide overcome the underground pressure and are pressed into a geological storage layer below 1000 meters to 7000 meters underground, so that the high-pressure liquid-phase gas-phase carbon dioxide is sealed at the deep underground layer. The device of the invention fundamentally solves the problems of storage and treatment of the carbon dioxide discharged by the industry, has simple and compact structure and low use cost, enables the abandoned mined-out or low-yield oil well to be reused, and has obvious effects on the aspects of preventing the temperature of the earth from rising, preventing the sea level from rising continuously and the like.
Detailed Description
The invention relates to a carbon dioxide storage deep burying device applying carbon neutralization, which comprises a liquid-phase carbon dioxide storage tank, a canned pump, a high-pressure pump, a heat exchanger and a boiler, wherein the output end of the liquid-phase carbon dioxide storage tank is divided into a gas-phase pipeline and a liquid-phase pipeline, the liquid-phase pipeline is pumped to a first inlet end of the high-pressure pump through a stop valve, a high-low pressure manifold and a canned pump, the gas-phase pipeline is pumped to a second inlet end of the high-pressure pump through 2 stop valves and a back pressure valve and reaches the outlet end of the high-pressure pump through a return valve, the outlet end of the high-pressure pump reaches the input end of the heat exchanger through a first one-way valve, and the output end of the heat exchanger is pumped to a well opening through a second one-way valve. The output hot water end of the boiler is connected with the circulating pipeline of the heat exchanger through a hot water pump. The gas phase pipeline is respectively connected with the first pressure release valve and the third pressure release valve in a side mode, the liquid phase pipeline is respectively connected with the second pressure release valve and the fourth pressure release valve in a side mode, and the pressure release valves are used for discharging air in the manifold.
The process of deeply burying carbon dioxide by the invention is as follows:
1) pumping liquid-phase carbon dioxide from a tank car or a tank ship into a storage tank 1, opening 2 stop valves 43 of a liquid-phase pipeline 3 and 2 stop valves 43 of a gas-phase pipeline 2, leading the carbon dioxide output end in the storage tank 1 to respectively reach a first inlet end 161 and a second inlet end 162 of a high-pressure pump 16 through two paths of the gas-phase pipeline 2 and the liquid-phase pipeline 3, and closing the 4 stop valves 43.
2) When liquid-phase carbon dioxide enters a high-low pressure manifold 29 of a high-pressure pump 16 and the high-pressure pump 16, respectively opening a first pressure release valve 4, a second pressure release valve 5, a third pressure release valve 15 and a fourth pressure release valve 30 in the high-low pressure manifold 29, discharging air in the high-low pressure manifold 29, and closing the 4 pressure release valves after discharging the air for about 5-6 seconds; the 4 stop valves 43 connected with the gas phase pipeline 2 and the liquid phase pipeline 3 of the storage tank 1 are opened again, so that the same pressure as that in the storage tank 1 is established in the high-pressure manifold 29 and the low-pressure manifold 29 of the high-pressure pump 16 through the liquid phase pipeline 2, and the same pressure as that in the storage tank 1 is established in the high-pressure manifold 29 and the low-pressure manifold 29 under the action of the liquid level differential pressure of the storage tank 1.
3) Starting the shield pump 10, opening the stop valve 43 of the liquid phase pipeline 3 of the storage tank to the position, and then carrying out low-pressure leak detection on the high-low pressure manifold 29; and under normal working conditions, the canned motor pump 10 works normally, and the output pressure of the canned motor pump 10 is established.
4) Adjusting the opening of the back pressure valve 12 to make the outlet pressure of the canned motor pump 10 greater than the inlet pressure thereof; and opening the return valve 18 to form a circulation loop of the storage tank 1, the liquid phase pipeline 3, the canned motor pump 10, the return valve 18 and the gas phase pipeline 2 to cool the high-pressure pump 16, so that the temperature of the high-pressure pump 16 approaches to the phase temperature point of the liquid phase carbon dioxide in the storage tank 1.
5) High-pressure liquid-phase carbon dioxide output by the high-pressure pump 16 enters the heat exchanger 42 and is heated to 10-15 ℃, then is directly conveyed to a wellhead of an offshore drilling platform 60, a ship 61, a fixed pump room 64 or other wellhead equipment 62 through an outlet pipe, and is pumped into geological sealing positions 65 with different depths of 1000-7000 meters underground through a wellhead pressure injection pump to perform intermittent or continuous operation until the sealing positions are saturated, and then cement is poured for sealing.
Check valve 34 isolates high pressure pump 16 from wellhead 38, preventing communication therebetween, causing vaporization of liquid carbon dioxide at the high pressure side of the high pressure pump and loss of pumped operating conditions.
The heat exchanger 42 of the present invention is connected to the output hot end of the boiler 35, and the hot water output from the boiler 35 is circulated through the heat exchanger 42 by the driving of the hot water pump 41, thereby heating the liquid-phase carbon dioxide passing through the heat exchanger 42. The temperature of the circulating hot water output from the boiler 35 is controlled by a computer provided in the boiler 35 to ensure that the carbon dioxide is within the saturation temperature. Once the temperature is set, the automatic operation is realized, different heating modes are selected according to different temperatures, and the invention can switch on electric heaters with different powers according to different temperatures of liquid-phase carbon dioxide passing through the heat exchanger 42. If the heat exchanger 42 is started after the power is on, a group of 100KW electric heaters of the boiler is firstly switched on, and simultaneously 1 hot water pump 41 is also started to operate, at the moment, water in the water tank of the boiler 35 and the heat exchanger 42 is circularly heated, and when the water temperature reaches 80 ℃, the heat exchanger 42 can pass through liquid-phase carbon dioxide. When the carbon dioxide passing through the boiler is between 0 and 10 ℃, two groups of 100KW electric heaters and 2 hot water pumps 41 are automatically connected to the boiler to circulate water for operation, and the work is maintained; when the temperature of the carbon dioxide passing through is lower than 0 ℃, the controller is automatically connected with three groups of 100KW electric heaters, and meanwhile, the 3 rd hot water pump 41 is started; when the output carbon dioxide reaches 10 ℃, the electric heating can select to cut off one group or two groups of 100KW electric heaters and the corresponding hot water pumps 41 to stop; when the temperature of the carbon dioxide passing through is higher than 10 ℃, all the electric heaters stop operating and work by using the waste heat in the boiler 35 and the water tank.
Various corresponding changes and modifications can be made by those skilled in the art according to the above technical solutions and concepts, and all such changes and modifications should be included in the scope of the present invention as claimed.
Claims (3)
1. A carbon dioxide storage deep burying device applying carbon neutralization is characterized by comprising a liquid-phase carbon dioxide storage tank, a canned pump, a high-pressure pump, a heat exchanger and a boiler, wherein the output end of the liquid-phase carbon dioxide storage tank is divided into a gas phase and a liquid phase, one path of the liquid phase passes through a plurality of stop valves, a high-low pressure manifold and the canned pump to a first inlet end of the high-pressure pump, and one path of the gas phase passes through a plurality of stop valves and a back pressure valve to a second inlet end of the high-pressure pump and reaches the outlet end of the high-pressure pump through a return valve; the outlet end of the high-pressure pump reaches the input end of the heat exchanger through a first one-way valve, and the output end of the heat exchanger is communicated with a wellhead pressure injection pump through a second one-way valve; the output hot water end of the boiler is connected with the circulating pipeline of the heat exchanger through a hot water pump.
2. The carbon dioxide storage deep burying device applying carbon neutralization as claimed in claim 1, wherein: and one path of the gas phase is respectively connected with a first pressure relief valve and a third pressure relief valve, and one path of the liquid phase is respectively connected with a second pressure relief valve and a fourth pressure relief valve.
3. The carbon dioxide storage deep burying device applying carbon neutralization as claimed in claim 1, wherein: the outlet pressure of the shielding pump is 0.1-0.15MPa higher than the inlet pressure of the shielding pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591532.3A CN114353047A (en) | 2021-12-23 | 2021-12-23 | Carbon dioxide storage deep burying device using carbon neutralization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111591532.3A CN114353047A (en) | 2021-12-23 | 2021-12-23 | Carbon dioxide storage deep burying device using carbon neutralization |
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| CN114353047A true CN114353047A (en) | 2022-04-15 |
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| CN202111591532.3A Pending CN114353047A (en) | 2021-12-23 | 2021-12-23 | Carbon dioxide storage deep burying device using carbon neutralization |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731263U (en) * | 2010-08-06 | 2011-02-02 | 镇江汉龙环保科技有限公司 | Carbon dioxide deep-burying storage device |
| CN104196504A (en) * | 2014-08-21 | 2014-12-10 | 江苏卫东机械有限公司 | Carbon dioxide pressure injection device for oil production |
| CN110334821A (en) * | 2019-07-09 | 2019-10-15 | 广东埃文低碳科技股份有限公司 | A kind of community service system of mild areas chain |
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2021
- 2021-12-23 CN CN202111591532.3A patent/CN114353047A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201731263U (en) * | 2010-08-06 | 2011-02-02 | 镇江汉龙环保科技有限公司 | Carbon dioxide deep-burying storage device |
| CN104196504A (en) * | 2014-08-21 | 2014-12-10 | 江苏卫东机械有限公司 | Carbon dioxide pressure injection device for oil production |
| CN110334821A (en) * | 2019-07-09 | 2019-10-15 | 广东埃文低碳科技股份有限公司 | A kind of community service system of mild areas chain |
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