CN104132246A - Peak regulation method and device for natural gas hydrate replacing by carbon dioxide - Google Patents
Peak regulation method and device for natural gas hydrate replacing by carbon dioxide Download PDFInfo
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- CN104132246A CN104132246A CN201410385424.4A CN201410385424A CN104132246A CN 104132246 A CN104132246 A CN 104132246A CN 201410385424 A CN201410385424 A CN 201410385424A CN 104132246 A CN104132246 A CN 104132246A
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Abstract
The invention belongs to the technical field of natural storage peak regulation with a hydrate method and the technical field of carbon trapping and storing and particularly relates to a peak regulation method and device for natural gas hydrate replacing by carbon dioxide. Along with continuous development of the economy and the natural gas technology in China, the demand quantity of natural gas is bigger and bigger. The problem of peak regulation happens every day to city pipe networks due to imbalance between natural supply and consumption. Due to burning of a large amount of fossil fuel, the concentration of carbon dioxide in air is higher and higher, and sea level rising and other natural disasters are caused due to the generated greenhouse effect. The method resolves the conflict between natural gas demand and consumption quantity and solves the problem of damage to environment due to carbon dioxide generated by burning of fossil fuel.
Description
Technical field
The invention belongs to hydrate and carry out natural gas storing peak regulation technique field and carbon trapping and Plugging Technology Applied field, be specifically related to peak regulating method and the device of carbon dioxide replacement gas hydrates.
Background technique
Using energy source and environmental protection have become the basic problem of countries in the world.Along with the economic development of China and the continuous increase of environmental protection pressure, as the proportion that utilizes of the rock gas of the clean and effective energy, day by day increase.The large-scale air supply system of long distance, high pressure, gridding has become the development trend of current world natural gas pipeline.The startup of the second west to east gas pipeline project of take is sign, and China's natural gas pipe network formally enters Rapid development stage.
In city natural gas pipe network distributing system, the demand of all kinds of gas users constantly changes, the basicly stable operating mode of air demand.Therefore, for guaranteeing the continuity of air feed and air feed and by the balance between gas, for solving the peaking problem of rock gas, feature for various peak regulation methods, suit measures to local conditions to build peak regulation facility, select different peak regulation methods, guarantee meets user's gas in all cases continuously, safely, steadily, in time.
Carbon trapping with seal up for safekeeping (Carbon Capture and Storage, is called for short CCS, also by translations carbon catch with bury, carbon is collected and store etc.) refer to the carbon dioxide (CO that big power station is produced
2) collect, and the storage that ins all sorts of ways is to avoid it to be discharged into a kind of technology in atmosphere.The Trapping ways of carbon dioxide mainly contains three kinds: trapping (Post-combustion) after trapping (Pre-combustion), oxygen-enriched combusting (Oxy-fuel combustion) and burning before burning.
Summary of the invention
The present invention is peak regulating method and the device of carbon dioxide replacement gas hydrates.By carbon dioxide replacement, seal the use in conjunction with peak regulation up for safekeeping, both realized network security and stored and peak regulation, reduced again the greenhouse effect that carbon dioxide causes, there is the double meaning of economy and environment.
Peak regulating method and the device of described carbon dioxide replacement gas hydrates comprise: the first three-way valve (1), swell refrigeration equipment (2), convection heat-exchanger (3), device for adding odor (4), hydrate generating tower (5), hydrate storage tank (6), carbon dioxide storage tank (7), throttle valve (8), pressure regulator valve (9), pressure gauge (10), the first centrifugal pump (11), coolant storage tank (12), the second centrifugal pump (13), the second three-way valve (14), exsiccator (15).
Technical solution of the present invention is as follows: after the part high-pressure natural gas of the first three-way valve enters swell refrigeration equipment, through convection heat-exchanger, device for adding odor, enter urban pipe network; Through another part high-pressure natural gas of the first three-way valve, enter hydrate generating tower and enter hydrate storage tank with the form of hydrate; From carbon dioxide storage tank carbon dioxide out, through throttle valve, pressure regulator valve, pressure gauge, enter hydrate storage tank with buried the sealing up for safekeeping of form of carbon dioxide hydrate; Feed water and by the first centrifugal pump, be injected into hydrate generating tower from hydrate storage tank water out, through perhydrate storage tank, entering the first centrifugal pump; From coolant storage tank refrigerant out, by the second centrifugal pump, being injected into convection heat-exchanger flows in coolant storage tank by perhydrate storage tank, hydrate generating tower; During gas-use low peak, the rock gas that hydrate storage tank does not exist with hydrate forms enters hydrate generating tower through the second three-way valve; During with gas peak, the rock gas decomposing out enters urban pipe network through the second three-way valve, exsiccator, device for adding odor.
Peak regulating method and the device of described carbon dioxide replacement gas hydrates, during with gas peak, from carbon dioxide out of carbon dioxide storage tank, through throttle valve, pressure regulator valve, pressure gauge, enter hydrate storage tank displacer gas hydrate and meet the consumption figure of user to rock gas, obtain that carbon dioxide hydrate is buried to be sealed up for safekeeping.
The advantage of invention
The present invention makes full use of the pressure energy in high pressure gas pipeline road and produces gas hydrates, needs hardly to consume electric energy.Flow process is simple, equipment is few, metal expends less, flexible adjustment, reliable operation, easily startup, operation and easy to maintenance, operating cost is low.Not only effectively utilize pipe network pressure energy, solve day, hour peaking problem of gas, when decomposing gas hydrates again, also carbon dioxide is sealed up for safekeeping with the form of hydrate, reduced the greenhouse effect that carbon dioxide causes, there is the double meaning of economy and environment.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the peak adjusting device schematic diagram of carbon dioxide replacement gas hydrates;
Embodiment
Below in conjunction with drawings and the embodiments, patent of the present invention is described in further detail: patent of the present invention is specifically related to peak regulating method and the device of carbon dioxide replacement gas hydrates, after the part high-pressure natural gas of the first three-way valve enters swell refrigeration equipment, through convection heat-exchanger, device for adding odor, enters urban pipe network; Through another part high-pressure natural gas of the first three-way valve, enter hydrate generating tower and enter hydrate storage tank with the form of hydrate; From carbon dioxide storage tank carbon dioxide out, through throttle valve, pressure regulator valve, pressure gauge, enter hydrate storage tank with buried the sealing up for safekeeping of form of carbon dioxide hydrate; Feed water and by the first centrifugal pump, be injected into hydrate generating tower from hydrate storage tank water out, through perhydrate storage tank, entering the first centrifugal pump; From coolant storage tank refrigerant out, by the second centrifugal pump, being injected into convection heat-exchanger flows in coolant storage tank by perhydrate storage tank, hydrate generating tower; During gas-use low peak, the rock gas that hydrate storage tank does not exist with hydrate forms enters hydrate generating tower through the second three-way valve; During with gas peak, the rock gas decomposing out enters urban pipe network through the second three-way valve, exsiccator, device for adding odor.
Detailed protocol is as follows, the device adopting comprises: the first three-way valve (1), swell refrigeration equipment (2), convection heat-exchanger (3), device for adding odor (4), hydrate generating tower (5), hydrate storage tank (6), carbon dioxide storage tank (7), throttle valve (8), pressure regulator valve (9), pressure gauge (10), the first centrifugal pump (11), coolant storage tank (12), the second centrifugal pump (13), the second three-way valve (14), exsiccator (15); It is characterized in that: after the part high-pressure natural gas of the first three-way valve (1) enters swell refrigeration equipment (2), through convection heat-exchanger (3), device for adding odor (4), enter urban pipe network; Through another part high-pressure natural gas of the first three-way valve (1), enter hydrate generating tower (5) and enter hydrate storage tank (6) with the form of hydrate; From carbon dioxide storage tank (7) carbon dioxide out, through throttle valve (8), pressure regulator valve (9), pressure gauge (10), enter hydrate storage tank (6) with buried the sealing up for safekeeping of form of carbon dioxide hydrate; Feed water and by the first centrifugal pump (11), be injected into hydrate generating tower (5) from hydrate storage tank (6) water out, through perhydrate storage tank (6), entering the first centrifugal pump (11); From coolant storage tank (12) refrigerant out, by the second centrifugal pump (13), being injected into convection heat-exchanger (3) flows in coolant storage tank (12) by perhydrate storage tank (6), hydrate generating tower (5); During gas-use low peak, the rock gas that hydrate storage tank (6) does not exist with hydrate forms enters hydrate generating tower (5) through the second three-way valve (14); During with gas peak, the rock gas decomposing out enters urban pipe network through the second three-way valve (14), exsiccator (15), device for adding odor (4).
Peak regulating method and the device of described carbon dioxide replacement gas hydrates, during with gas peak, from carbon dioxide out of carbon dioxide storage tank (7), through throttle valve (8), pressure regulator valve (9), pressure gauge (10), enter hydrate storage tank (6) displacer gas hydrate and meet the consumption figure of user to rock gas, obtain that carbon dioxide hydrate is buried to be sealed up for safekeeping.
Claims (2)
1. the peak regulating method of carbon dioxide replacement gas hydrates and device, the device adopting in method comprises: the first three-way valve (1), swell refrigeration equipment (2), convection heat-exchanger (3), device for adding odor (4), hydrate generating tower (5), hydrate storage tank (6), carbon dioxide storage tank (7), throttle valve (8), pressure regulator valve (9), pressure gauge (10), the first centrifugal pump (11), coolant storage tank (12), the second centrifugal pump (13), the second three-way valve (14), exsiccator (15);
It is characterized in that: after the part high-pressure natural gas of the first three-way valve (1) enters swell refrigeration equipment (2), through convection heat-exchanger (3), device for adding odor (4), enter urban pipe network; Through another part high-pressure natural gas of the first three-way valve (1), enter hydrate generating tower (5) and enter hydrate storage tank (6) with the form of hydrate; From carbon dioxide storage tank (7) carbon dioxide out, through throttle valve (8), pressure regulator valve (9), pressure gauge (10), enter hydrate storage tank (6) with buried the sealing up for safekeeping of form of carbon dioxide hydrate; Feed water and by the first centrifugal pump (11), be injected into hydrate generating tower (5) from hydrate storage tank (6) water out, through perhydrate storage tank (6), entering the first centrifugal pump (11); From coolant storage tank (12) refrigerant out, by the second centrifugal pump (13), being injected into convection heat-exchanger (3) flows in coolant storage tank (12) by perhydrate storage tank (6), hydrate generating tower (5); During gas-use low peak, the rock gas that hydrate storage tank (6) does not exist with hydrate forms enters hydrate generating tower (5) through the second three-way valve (14); During with gas peak, the rock gas decomposing out enters urban pipe network through the second three-way valve (14), exsiccator (15), device for adding odor (4).
2. the peak regulating method of carbon dioxide replacement gas hydrates as claimed in claim 1 and device, it is characterized in that: during with gas peak, from carbon dioxide out of carbon dioxide storage tank (7), through throttle valve (8), pressure regulator valve (9), pressure gauge (10), enter hydrate storage tank (6) displacer gas hydrate and meet the consumption figure of user to rock gas, obtain that carbon dioxide hydrate is buried to be sealed up for safekeeping.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104819381A (en) * | 2015-05-09 | 2015-08-05 | 辽宁石油化工大学 | Natural gas pipeline peak-load regulation method and device based on hydrate technology |
CN107940432A (en) * | 2017-11-18 | 2018-04-20 | 长江大学 | Oxygen-enriched combusting and exploitation gas hydrates co-generation system and method based on attemperation of steam |
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CN101551060A (en) * | 2009-04-30 | 2009-10-07 | 华南理工大学 | Method and device for integrated utilization of natural gas pipe network pressure energy refrigeration and hydrate |
CN101761326A (en) * | 2009-12-30 | 2010-06-30 | 中国科学院广州能源研究所 | Simulation method and experimental device for carbon dioxide replacement exploitation of gas hydrate |
CN103234120A (en) * | 2013-04-24 | 2013-08-07 | 辽宁石油化工大学 | Peak pitching method and device based on utilization of pressure energy of high-pressure natural gas pipeline |
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2014
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US3735600A (en) * | 1970-05-11 | 1973-05-29 | Gulf Research Development Co | Apparatus and process for liquefaction of natural gases |
CN101551060A (en) * | 2009-04-30 | 2009-10-07 | 华南理工大学 | Method and device for integrated utilization of natural gas pipe network pressure energy refrigeration and hydrate |
CN101761326A (en) * | 2009-12-30 | 2010-06-30 | 中国科学院广州能源研究所 | Simulation method and experimental device for carbon dioxide replacement exploitation of gas hydrate |
CN103234120A (en) * | 2013-04-24 | 2013-08-07 | 辽宁石油化工大学 | Peak pitching method and device based on utilization of pressure energy of high-pressure natural gas pipeline |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104819381A (en) * | 2015-05-09 | 2015-08-05 | 辽宁石油化工大学 | Natural gas pipeline peak-load regulation method and device based on hydrate technology |
CN107940432A (en) * | 2017-11-18 | 2018-04-20 | 长江大学 | Oxygen-enriched combusting and exploitation gas hydrates co-generation system and method based on attemperation of steam |
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Application publication date: 20141105 |