CN104611080A - An integrated utilization device and a method for natural gas hydrate slurry - Google Patents
An integrated utilization device and a method for natural gas hydrate slurry Download PDFInfo
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- CN104611080A CN104611080A CN201410795525.9A CN201410795525A CN104611080A CN 104611080 A CN104611080 A CN 104611080A CN 201410795525 A CN201410795525 A CN 201410795525A CN 104611080 A CN104611080 A CN 104611080A
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Abstract
The invention discloses an integrated utilization device and a method for natural gas hydrate slurry, and relates to the technical field of energy. The device comprises following four units: a unit of generating hot water and refrigerant water, a unit of preparing, storing and gasifying the hydrate slurry, a unit of transporting the hydrate slurry outside and utilizing cold energy, and a unit of controlling the generation amount of the hydrate slurry. Correspondingly, the method includes a step of generating the hot water and the refrigerant water, a step of preparing, storing and gasifying the hydrate slurry, a step of transporting the hydrate slurry outside and refrigerating, and a step of controlling the generation amount of the hydrate slurry. According to the device and the method, the hydrate slurry is continuously prepared by an absorption refrigerator, and the generation amount of the hydrate slurry is controlled by a designed automatic control system. The hydrate slurry is heated, gasified, sent to city pipeline networks, and used for natural gas peak load regulation. By utilization of good fluidity of the hydrate slurry, the hydrate slurry is loaded into vehicles and transported to solve the gas using difficulty for users in remote areas. The hydrate slurry is adopted as a cold storage medium and conveyed by pipes to a fresh-keeping storehouse for refrigeration, and 30-50% of energy is saved than a traditional water cold storage system.
Description
Technical field
The present invention relates to energy technology field, be specifically related to a kind of gas hydrate slurry liquid integrated utilization device and method.
Background technology
The production of gas hydrate and storage need low temperature and high pressure, have higher requirement to refrigeration equipment and storage facilities.Gas hydrate do not have mobility, and cargo handling process expends time in length, affects air feed efficiency.Water is as current heat-transporting medium the most widely, and form of heat of its conveying is sensible heat, and heat flow density is very low.If the delivery medium of the high heat flux of slurry form can be adopted, then can save the energy consumption of transportation water pump, reduce line size, greatly reduce system investments and working cost.Visible, solve gas hydrate and produce in storage and transport process the problem that is high, that not easily transport that consumes energy, have important practical significance.Meanwhile, within air-conditioning systems, replace water as delivery medium with hydrate slurry, become the trend instantly developed.
The process of gas hydrate slurry liquid has the following advantages compared with gas hydrate process: (1) generates, decompose (2) easy to control good mobility.(3) can be combined with absorptionmachine easily.(4) treating processes is simple, only does MIN process to the Sweet natural gas of input before crystal of hydrate is formed.(5) generate without the need to low temperature or high pressure.(6) not aerobic agent or catalyzer in process.(7) be a kind of high heat flux delivery medium.
At present, the hydrate delivered has been announced or hydrate slurry integrated utilization device mainly comprises:
1, Chinese patent CN 103103004A discloses a kind of gas hydrate synthesis-decomposition integration technique and system.This patent of invention proposes that gas hydrate are synthesized-decompose skid-mounted system by gas hydrate and is transported to user.But hydrate does not have mobility, transport difficult.
2, Chinese patent CN 103411132A discloses hydrate natural gas storing and peak regulation technique and system.This invention proposes a small amount of propane, butane to add in Sweet natural gas, makes that the pressure needed for synthesis ratio ordinary method of gas hydrate is low, temperature is high.But the technique that this patent of invention is announced and system are only limitted to storage and the peak regulation of hydrate, do not make full use of the multiple advantage of hydrate.
3, Chinese patent CN 102927442A utilize the low temperature environment in seabed, seawater and offshore drilling platform extraction Sweet natural gas to generate hydrate slurry body, hydrate slurry is by the pipeline transportation in seabed.Because environments such as subsea is very complicated severe, hydrate slurry is difficult to ensure by the flowing safety of pipeline transportation.
4, document (the gas industry .2010 that " utilizes pipe network pressure energy to prepare the peak regulation new technology of gas hydrate ", 30 (10) .) in mention make full use of Sweet natural gas expand produce cold prepare gas hydrate, for gas gas storage and peak-shaving.But hydrate needs to store at low temperatures, require high to storage facilities.
The deficiency that existing integrated utilization device exists as can be seen from the above the open literature and patent search results mainly contains:
(1) needed for device generation gas hydrate, pressure is high, temperature is low;
(2) hydrate entrucking transport difficult, adds human and material resources and financial resources;
(3) device does not have the function preparing gas hydrate slurry liquid, gas hydrate slurry liquid peak regulation, transportation of natural gas hydrate slurry and cold energy use integration.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art existence, a kind of gas hydrate slurry liquid integrated utilization device and method is provided, for natural gas peak-shaving, entrucking transport, fresh-keeping warehouse refrigeration.Solve gas hydrate generative process power consumption in prior art high, the problem that gas hydrate are not easily transported.Meanwhile, in fresh-keeping warehouse Refrigeration Technique, replace water as delivery medium with hydrate slurry, saved large energy.
A kind of gas hydrate slurry liquid integrated utilization method of the present invention, comprises the steps:
(1) hot water generates and chilled water generation step: solar energy collector 1 converts solar energy into water body in solar energy collector 1 and stores the heat energy had, generating hot water, and hot water flows into hot water storage tank 2 and stores; When hot water temperature does not meet hot water storage tank 2 preset temp threshold value, start electric heater unit 3 and carry out boosting, by hot water shunting in hot water storage tank 2, enter lithium bromide absorption refrigerating set (7,8), hot water drives lithium bromide absorption refrigerating set (7,8) to generate chilled water, and chilled water flows into hydrate slurry maker (16,17);
Sun power is a kind of inexhaustible clean energy, and hot water that lithium bromide absorption refrigerating set utilizes solar energy system to generate drives and generates chilled water, and the process therefore generating chilled water is low-carbon environment-friendly, energy-saving and cost-reducing;
(2) hydrate slurry Preparation and storage and gasification step: Sweet natural gas enters natural valve station 14 from high-pressure natural gas pipe network, pressure is 5-7MPa, by a part of high-pressure natural gas after natural valve station 14 step-down, pressure drop is to 1.6-2.0MPa, enter urban pipe network, another part high-pressure natural gas enters hydrate slurry maker (16,17) through natural gas flow adjustable valve 15, the chilled water generated with above-mentioned (1) step fully mixes, and generates gas hydrate slurry liquid;
Hydrate slurry flows out bottom hydrate slurry maker 16, flow in hydrate slurry liquid storage tank (21,22) and store, pressure store is 2-4MPa, temperature is 5 DEG C, average every day can synthesized hydrate 9480Kg, natural gas-storing 1197Kg, meets hydrate growing amount needed for peak regulation substantially;
When needing to carry out natural gas peak-shaving, electric heater unit 23 pairs of hydrate slurry liquid storage tanks 21 heat, electric heater unit 24 pairs of hydrate slurry liquid storage tanks 22 heat, hydrate slurry gasification enters urban pipe network, the water decomposing generation flows into lithium bromide absorption refrigerating set (7,8) through impeller pump 25 and recycles, and water tank 32 provides supplementary feed for lithium bromide absorption refrigerating set (7,8);
(3) the outer defeated and refrigeration techniques step of hydrate slurry: in hydrate slurry maker 17, a part of hydrate slurry sends into tank car storage tank 38 through pumping-gravity flow associating mode of movement, tank car storage tank 38 adopts high vacuum multilayer insulation, hydrate slurry is transported to gas hydrate slurry liquid gas holder station by tank car, gaseous media in tank car storage tank is discharged through valve 44 and is reclaimed, discharge after hydrate slurry removes supercharging blower 40 heating and gasifying through valve 39, return the supercharging of inner core top;
In hydrate slurry maker 17, another part hydrate slurry sends into air/water compound slurry heat exchanger 35 through impeller pump 33, freezes to fresh-keeping warehouse 36, and after heat exchange, hydrate slurry is back to hydrate slurry maker 17;
(4) hydrate slurry growing amount rate-determining steps: by control panel input weather data WD, treater E-1 is after accepting weather data WD, be converted to electric signal transmission to solar energy collector 1, hot water storage tank 2, lithium bromide absorption refrigerating set (7,8), solar energy collector hot water flow, water temperature information, hot water storage tank water level, water temperature information, unit cooler chilled water flow, water temperature information pass to treater E-2 process respectively; In the process that information is transmitted, artificial inputs corresponding chilled water flow information LF, natural gas temperature information TM, gas component information GC, natural pressure force information PT, gas discharge information FR by control panel, produce hydrate slurry growing amount information Mass by treater E-3 process, pass to treater E-2 process; The conversion of gained information is flowed to Flux Valve Control device a by treater E-2, Flux Valve Control device a controls hot water flow variable valve 6, chilled water flow control valve (10,26), natural gas flow adjustable valve 15 aperture, and flow control valve opening information treated device E-4 process passes to the effect that treater E-2 plays feedback regulation.
The method comprises further:
In described step (1), hot water temperature is at 90 DEG C-105 DEG C, and chilled water temperature is adjustable within the scope of 5-10 DEG C, and hot water flow is at 100m
3-130m
3/ h, chilled water flow is at 100-120m
3adjustable within the scope of/h.
In described step (2), the mol ratio of chilled water and Sweet natural gas is 20:1-75:1, and the pressure in hydrate slurry maker (16,17) is 5-7MPa, and temperature is 5-10 DEG C.
In described step (3), hydrate slurry car loading operation is realized by pumping-gravity flow associated form.
In described step (4), the flow of hot water, chilled water, Sweet natural gas is regulated to control the growing amount of hydrate slurry in real time by Flux Valve Control device a.
Realize the device of hydrate slurry integrated utilization method of the present invention: comprise hot water generate and chilled water generation unit, hydrate slurry Preparation and storage and gasification unit, hydrate slurry outer defeated and cold energy use unit, hydrate slurry growing amount control unit four parts.Wherein:
Hot water generates and chilled water generation unit, comprise three cover hot water cyclesystems, hot water cyclesystem one is connected by hot water thermal insulating line of pipes successively by solar energy collector 1, hot water storage tank 2, hot water pump 4, form circulation loop, hot water cyclesystem two is connected by hot water thermal insulating line of pipes successively by hot water storage tank 2, hot water pump 5, lithium bromide absorption refrigerating set 8, form circulation loop, hot water cyclesystem three is connected by hot water thermal insulating line of pipes successively by hot water storage tank 2, hot water pump 5, lithium bromide absorption refrigerating set 7, forms circulation loop;
Hydrate slurry Preparation and storage and gasification unit, comprise two cover refrigerant water systems, refrigerant water system one is incubated line of pipes by lithium bromide absorption refrigerating set 7 by chilled water, hydrate slurry maker 16, hydrate slurry liquid storage tank (21, 22), impeller pump 25 is connected successively, form circulation loop, refrigerant water system two is by lithium bromide absorption refrigerating set 8, hydrate slurry maker 16, hydrate slurry liquid storage tank (21, 22), impeller pump 25 is connected successively by chilled water insulation line of pipes, form circulation loop, by being arranged on the thermometer (9 on pipeline, 12, 28), pressure warning unit 13, magnetic flow meter 11 Real-Time Monitoring operation condition, water tank 32, impeller pump 30 is connected also by pipeline and chilled water insulation line of pipes crosses,
The outer defeated and cold energy use unit of hydrate slurry, comprise Liang Tao hydrate slurry haulage system, haulage system one comprises the hydrate slurry maker 17, impeller pump 37, the tank car storage tank 38 that are communicated with successively, tank car storage tank 38 is provided with and is communicated with by valve 39, supercharging blower 40 the supercharging pipeline formed successively, liquidometer 41 and tensimeter 45 are arranged in operation box, before tensimeter 43 is arranged on car; Haulage system two comprises the hydrate slurry maker 17, impeller pump 33, the air/water compound slurry heat exchanger 35 that is provided with in fresh-keeping warehouse 36 that are communicated with successively;
Hydrate slurry growing amount control unit, comprise information transferring elements and function unit, temperature sensor and liquid flow sensor are arranged on the outlet of solar energy collector 1 hot water line and lithium bromide absorption refrigerating set (7,8) chilled water pipeline outlet, water level sensor and temperature sensor are arranged on hot water storage tank 2 upper and lower, and it is inner that gas flow sensor is arranged on gas flow regulating valve 15; Control panel can arrange water temperature in solar energy collector 1, Real-Time Monitoring hot water storage tank 2 median water level, water temperature, there is water level Presentation Function, have and surpass water temperature and the instruction of super water-level alarm into water, can be artificial input corresponding weather data WD by control panel, chilled water flow information LF, natural gas temperature information TM, gas component information GC, natural pressure force information PT, gas discharge information FR; Information transferring elements is made up of treater (E-1, E-2, E-3, E-4), and function unit is made up of Flux Valve Control device a, hot water flow variable valve 6, chilled water flow control valve (10,26), natural gas flow adjustable valve 15.
Remarkable advantage of the present invention is in the following aspects:
(1) utilize solar energy system to freeze, low-carbon environment-friendly, energy-saving and cost-reducing, hydrate slurry generates without the need to low temperature or high pressure, required little energy;
(2) hydrate slurry entrucking transport, solves user's use gas from far-off regions difficulty, improves the economy of natural gas transportation;
(3) mobility utilizing hydrate slurry good, hydrate slurry car loading operation is realized by pumping-gravity flow associated form, with save energy;
(4) by electric heater unit, hydrate slurry gasification is used for natural gas peak-shaving, solves day by day serious Natural Gas Peak Shaving in Cities problem;
(5) hydrate slurry substitutes water and freezes for fresh-keeping warehouse, can reduce normal power load, 30%-50% more energy-conservation than traditional chilled water storage system;
(6) adopt automatic control system to regulate hydrate slurry growing amount, guarantee effective utilization of hydrate slurry, improve the overall efficiency of system.
Accompanying drawing explanation
Fig. 1 is hydrate slurry integrated utilization device schematic diagram of the present invention;
Fig. 2 is hydrate slurry integrated utilization schema of the present invention;
Fig. 3 is that hot water of the present invention generates and chilled water generation unit;
Fig. 4 is hydrate slurry Preparation and storage of the present invention and gasification unit;
Fig. 5 is the outer defeated and cold energy use unit of hydrate slurry of the present invention;
Fig. 6 is pumping of the present invention-Loading by Gravity system flowchart;
Fig. 7 is hydrate slurry growing amount control unit of the present invention;
Fig. 8 is hydrate slurry growing amount control flow chart of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present invention is further described in detail.
Gas hydrate slurry liquid refers to that gas hydrate are dispersed in polyphasic flow with the form of solid particulate and forms slurries, and gas hydrate slurry liquid can utilize the gas storage potential of gas hydrate to produce under suitable condition.Gas hydrate slurry liquid is convenient to handling and transport, and the gas at least containing 75 times of volumes in per unit hydrate slurry.
Decomposition due to gas hydrate slurry liquid needs more energy, as long as therefore cut off heat transfer path, gas hydrate slurry liquid long-term stability just can be made to exist, ensure that transportation security.Gas hydrate slurry liquid is produced by land, is furnished with applicable tank car and loads facility, is used for transport natural gas hydrate slurry specially, can significantly improve the economy of transport.Natural valve station using hydrate slurries storaging and transport technology is significant, and there is sufficient high-pressure natural gas supply at natural valve station on the one hand, and the generation for hydrate slurry provides necessary condition.On the other hand, the consumer group of Sweet natural gas can be expanded, push the consumption of Sweet natural gas to remote small towns and rural area, and to realize this purpose be impracticable in reality by laying pipe network.
Gas hydrate slurry liquid is a kind of delivery medium of high heat flux, uses it for fresh-keeping warehouse refrigeration, can obtain satisfied refrigeration.
Based on the characteristic of above-mentioned gas hydrate slurry liquid, by generating gas hydrate slurry liquid at natural valve station, then hydrate slurry being used for natural gas peak-shaving, entrucking transport, fresh-keeping warehouse refrigeration, specifically describing as follows:
As shown in Figure 1, hydrate slurry integrated utilization device, comprises solar energy collector 1, hot water storage tank 2, lithium bromide absorption refrigerating set (7,8), hydrate slurry maker (16,17), hydrate slurry liquid storage tank (21,22), water tank 32; The concrete purposes of hydrate slurry is: 1., heating and gasifying enters urban pipe network through natural valve station 14; 2., pipe is transported to fresh-keeping warehouse 36 and is freezed; 3., remote districts are transported to by sending into tank car storage tank 38.
As shown in Figure 2, hydrate slurry integrated utilization flow process, comprise hot water generate and chilled water generation unit, hydrate slurry Preparation and storage and gasification unit, hydrate slurry outer defeated and cold energy use unit, hydrate slurry growing amount control unit four parts.
As shown in Figure 3, hot water generates and chilled water generation unit, comprises solar energy collector 1, hot water storage tank 2, electric heater unit 3, hot water pump 4, hot water pump 5, hot water flow variable valve 6, lithium bromide absorption refrigerating set 7, lithium bromide absorption refrigerating set 8; This unit comprises three cover hot water cyclesystems.Hot water cyclesystem one is connected by hot water thermal insulating line of pipes successively by solar energy collector 1, hot water storage tank 2, hot water pump 4, forms circulation loop.Hot water cyclesystem two is connected by hot water thermal insulating line of pipes successively by hot water storage tank 2, hot water pump 5, lithium bromide absorption refrigerating set 8, forms circulation loop.Hot water cyclesystem three is connected by hot water thermal insulating line of pipes successively by hot water storage tank 2, hot water pump 5, lithium bromide absorption refrigerating set 7, forms circulation loop.Solar energy collector 1 converts solar energy into water body in solar energy collector 1 and stores the heat energy had, generating hot water, and temperature is 90-105 DEG C, and flow is 100-130m
3/ h, hot water flows into hot water storage tank 2 and stores.When hot water temperature does not meet hot water storage tank 2 preset temp threshold value, start electric heater unit 3 and carry out boosting.By hot water shunting in hot water storage tank 2, enter lithium bromide absorption refrigerating set (7,8).Hot water drives lithium bromide absorption refrigerating set (7,8) to generate chilled water, and chilled water temperature is 5-10 DEG C, and flow is 100-120m
3/ h.
As shown in Figure 4, hydrate slurry Preparation and storage and gasification unit, comprise lithium bromide absorption refrigerating set (7,8), impeller pump (25,30), electric heater unit (23,24), hydrate slurry liquid storage tank (21,22), chilled water flow control valve (10,26), thermometer (9,12,28), valve (18,19,20,27,29,31), natural gas flow adjustable valve 15, magnetic flow meter 11, pressure warning unit 13, natural valve station 14, hydrate slurry maker 16, water tank 32; This unit comprises two cover refrigerant water systems.Lithium bromide absorption refrigerating set 7, hydrate slurry maker 16, hydrate slurry liquid storage tank (21,22), impeller pump 25 are connected by chilled water insulation line of pipes by refrigerant water system one successively, form circulation loop.Refrigerant water system two is incubated line of pipes by chilled water is connected successively by lithium bromide absorption refrigerating set 8, hydrate slurry maker 16, hydrate slurry liquid storage tank (21,22), impeller pump 25, forms circulation loop.By being arranged on thermometer (9,12,28), the pressure warning unit 13 on pipeline, magnetic flow meter 11 Real-Time Monitoring operation condition.Water tank 32, impeller pump 30 are connected also by pipeline and chilled water insulation line of pipes crosses.Sweet natural gas enters natural valve station 14 from high-pressure natural gas pipe network, and pressure is 5-7MPa.By a part of high-pressure natural gas after natural valve station 14 step-down, Pressure Drop, to 1.6-2.0MPa, enters urban pipe network.Another part high-pressure natural gas enters hydrate slurry maker (16,17) through natural gas flow adjustable valve 15, and the chilled water generated with lithium bromide absorption refrigerating set (7,8) fully mixes, and generates gas hydrate slurry liquid.Hydrate slurry flows out bottom hydrate slurry maker 16, and flow in hydrate slurry liquid storage tank (21,22) and store, pressure store is 2-4MPa, and temperature is 5 DEG C.When needing to carry out natural gas peak-shaving, electric heater unit 23 pairs of hydrate slurry liquid storage tanks 21 heat, and electric heater unit 24 pairs of hydrate slurry liquid storage tanks 22 heat, and hydrate slurry gasification enters urban pipe network.The water decomposing generation flows into lithium bromide absorption refrigerating set (7,8) through impeller pump 25 and recycles.Water tank 32 provides supplementary feed for lithium bromide absorption refrigerating set (7,8).
The amount of hydrate solids particles generation just can be inferred by calculating the amount generating the gas that hydrate solids particle consumes.
Hydrate solids particle formed consume gas volume V at standard conditions
g, method of calculation are as follows:
In formula: T
0, P
0be the temperature and pressure under the normal conditions respectively, Z is compressibility factor, and R is gas law constant, Δ n
ifor consuming the molar weight of gas.
Gas volume V stored by unit volume hydrate solids particle
h, method of calculation are as follows:
In formula: V
mfor molar volume of gas, δ
hfor hydrate solids pellet density, M
hfor the molar mass of hydrate solids particle.
As shown in Figure 5, the outer defeated and cold energy use unit of hydrate slurry, comprise impeller pump (33,37), pressure warning unit (43,45), valve (34,39,42,44), hydrate slurry maker 17, air/water compound slurry heat exchanger 35, fresh-keeping warehouse 36, tank car storage tank 38, supercharging blower 40, liquidometer 41; The outer defeated part of hydrate slurry entrucking comprises two cover hydrate slurry delivery systems, and delivery system is unified comprises the hydrate slurry maker 17, impeller pump 37, the tank car storage tank 38 that are communicated with successively.Tank car storage tank 38 is provided with and is communicated with by valve 39, supercharging blower 40 the supercharging pipeline formed successively.Delivery system two comprises the hydrate slurry maker 17, impeller pump 33, the air/water compound slurry heat exchanger 35 that is provided with in freezer 36 that are communicated with successively.In hydrate slurry maker 17, a part of hydrate slurry sends into tank car storage tank 38 through impeller pump 37, and tank car storage tank 38 adopts high vacuum multilayer insulation.Hydrate slurry is transported to gas hydrate slurry liquid gas holder station by tank car.Gaseous media in tank car storage tank is discharged through valve 44 and is reclaimed.Discharge after hydrate slurry removes supercharging blower 40 heating and gasifying through valve 39, return the supercharging of inner core top.The object of supercharging is to maintain the stable of hydrate slurry.Liquidometer 41 and tensimeter 45 are arranged in operation box, before tensimeter 43 is arranged on car.By the Real-Time Monitoring to pressure information and liquid level information, ensure transportation safety.In hydrate slurry maker 17, another part hydrate slurry sends into air/water compound slurry heat exchanger 35 through impeller pump 33, freezes to fresh-keeping warehouse 36.After heat exchange, hydrate slurry is back to hydrate slurry maker 17.
As shown in Figure 6, pumping-Loading by Gravity system flow, comprises hydrate slurry maker 17, impeller pump 37, dress liquid flexible pipe (46,47,48,49,50,51); Z
0for liquid level in hydrate slurry maker 17, H
0for hydrate slurry maker 17 exports and fill the discrepancy in elevation between liquid flexible pipe, the potential energy of loading system is Z
0+ H
0, L
0, D
0and Q
0be respectively the pipe range of hydrate slurry line of pipes, caliber and flow.Utilize the energy that topographical elevation difference and impeller pump provide, hydrate slurry delivers to dress liquid flexible pipe by pipeline, carries out car loading operation.Pumping-Loading by Gravity system can save energy, reduces investment cost.
As shown in Figure 7, hydrate slurry growing amount control unit, comprise treater (E-1, E-2, E-3, E-4), solar energy collector 1, hot water storage tank 2, lithium bromide absorption refrigerating set (7,8), Flux Valve Control device a, hot water flow variable valve 6, chilled water flow control valve (10,26), natural gas flow adjustable valve 15; Temperature sensor and liquid flow sensor are arranged on the outlet of solar energy collector 1 hot water line and lithium bromide absorption refrigerating set (7,8) chilled water pipeline outlet, water level sensor and temperature sensor are arranged on hot water storage tank 2 upper and lower, and it is inner that gas flow sensor is arranged on gas flow regulating valve 15; Control panel can arrange water temperature in solar energy collector 1, Real-Time Monitoring hot water storage tank 2 median water level, water temperature, there is water level Presentation Function, have and surpass water temperature and the instruction of super water-level alarm into water, can be artificial input corresponding weather data WD by control panel, chilled water flow information LF, natural gas temperature information TM, gas component information GC, natural pressure force information PT, gas discharge information FR; Information transferring elements is made up of treater (E-1, E-2, E-3, E-4), and function unit is made up of Flux Valve Control device a, hot water flow variable valve 6, chilled water flow control valve (10,26), natural gas flow adjustable valve 15.By control panel input weather data WD, treater E-1 is after accepting weather data WD, be converted to electric signal transmission to solar energy collector 1, hot water storage tank 2, lithium bromide absorption refrigerating set (7,8), solar energy collector hot water flow, temperature information, hot water storage tank water level, water temperature information, unit cooler chilled water flow, temperature information pass to treater E-2 process; In the process that information is transmitted, artificial inputs corresponding chilled water flow information LF, natural gas temperature information TM, gas component information GC, natural pressure force information PT, gas discharge information FR by control panel, produce hydrate slurry growing amount information Mass by treater E-3 process, pass to treater E-2 process; The conversion of gained information is flowed to Flux Valve Control device a by treater E-2, Flux Valve Control device a controls hot water flow variable valve 6, chilled water flow control valve (10,26), natural gas flow adjustable valve 15 aperture, and flow control valve opening information treated device E-4 process passes to the effect that treater E-2 plays feedback regulation.
As shown in Figure 8, hydrate slurry growing amount control flow, comprises the following steps:
1., networking obtains real-time weather data, inputs weather data by control panel;
2. the hot water temperature of solar energy collector generation, flow is recorded, respectively, the hot water water level in hot water storage tank, temperature, chilled water temperature, flow that unit cooler generates;
3., by control panel input chilled water flow, natural gas temperature, gas component, gas pressure, gas discharge data, treated device process, exports hydrate slurry growing amount data;
4., arrange the data obtained, judge whether to reach the hydrate slurry growing amount judgement criteria requirement preset, if reach judgement criteria requirement, reduce respective valves aperture by Flux Valve Control device; If do not reach judgement criteria requirement, increase respective valves aperture by Flux Valve Control device.
It should be noted that; content in specification sheets of the present invention is the protection domain in order to better explain claim and unrestricted claim; the present invention's scope required for protection is as the criterion with claims, and the change need not paying creative work that those skilled in the art make on the basis that with reference to description in addition also should fall into the present invention's scope required for protection.
Claims (8)
1. a gas hydrate slurry liquid integrated utilization method, is characterized in that: comprise the following steps:
(1) hot water generates and chilled water generation step: solar radiant energy is converted into water body in solar energy collector (1) and stores the heat energy had by solar energy collector (1), generating hot water, hot water flows into hot water storage tank (2) and stores; When hot water temperature does not meet hot water storage tank (2) preset temp threshold value, start electric heater unit (3) and carry out boosting, by hot water shunting in hot water storage tank (2), enter lithium bromide absorption refrigerating set (7,8), hot water drives lithium bromide absorption refrigerating set (7,8) to generate chilled water, and chilled water flows into hydrate slurry maker (16,17);
(2) hydrate slurry Preparation and storage and gasification step: Sweet natural gas enters natural valve station (14) from high-pressure natural gas pipe network, pressure is 5-7MPa, by a part of high-pressure natural gas after the step-down of natural valve station (14), pressure drop is to 1.6-2.0MPa, enter urban pipe network, another part high-pressure natural gas enters hydrate slurry maker (16,17) through natural gas flow adjustable valve (15), the chilled water generated with above-mentioned (1) step fully mixes, and generates hydrate slurry;
Hydrate slurry flows out from hydrate slurry maker (16) bottom, and flow in hydrate slurry liquid storage tank (21,22) and store, pressure store is 2-4MPa, and temperature is 5 DEG C;
When needing to carry out natural gas peak-shaving, electric heater unit (23) heats hydrate slurry liquid storage tank (21), electric heater unit (24) heats hydrate slurry liquid storage tank (22), hydrate slurry gasification enters urban pipe network, decompose the water generated to flow into lithium bromide absorption refrigerating set (7,8) through impeller pump (25) and recycle, water tank (32) provides supplementary feed for lithium bromide absorption refrigerating set (7,8);
(3) the outer defeated and refrigeration techniques step of hydrate slurry: in hydrate slurry maker (17), a part of hydrate slurry sends into tank car storage tank (38) through pumping-gravity flow associating mode of movement, hydrate slurry is transported to gas hydrate slurry liquid gas holder station by tank car, gaseous media in tank car storage tank is discharged through valve (44) and is reclaimed, after valve (39) discharge hydrate slurry removes supercharging blower (40) heating and gasifying, return the supercharging of inner core top;
In hydrate slurry maker (17), another part hydrate slurry sends into air/water compound slurry heat exchanger (35) through impeller pump (33), to fresh-keeping warehouse (36) refrigeration, after heat exchange, hydrate slurry is back to hydrate slurry maker (17);
(4) hydrate slurry growing amount rate-determining steps: input weather data (WD) by control panel, treater (E-1) is after accepting weather data (WD), be converted to electric signal transmission to solar energy collector (1), hot water storage tank (2), lithium bromide absorption refrigerating set (7,8), solar energy collector hot water flow, water temperature information, hot water storage tank water level, water temperature information, unit cooler chilled water flow, water temperature information pass to treater (E-2) process respectively; In the process that information is transmitted, artificial inputs corresponding chilled water flow information (LF), natural gas temperature information (TM), gas component information (GC), natural pressure force information (PT), gas discharge information (FR) by control panel, processed by treater (E-3) and produce hydrate slurry growing amount information (Mass), pass to treater (E-2) process; The conversion of gained information is flowed to Flux Valve Control device (a) by treater (E-2), Flux Valve Control device (a) controls hot water flow variable valve (6), chilled water flow control valve (10,26), natural gas flow adjustable valve (15) aperture, and the treated device of flow control valve opening information (E-4) process passes to the effect that treater (E-2) plays feedback regulation.
2. the method for claim 1, comprises further:
In described step (1), hot water temperature is at 90 DEG C-105 DEG C, and chilled water temperature is adjustable within the scope of 5-10 DEG C.
3. method as claimed in claim 1 or 2, comprises further:
In described step (1), hot water flow is at 100m
3-130m
3/ h, chilled water flow is at 100-120m
3adjustable within the scope of/h.
4. the method as described in claim 1-3, comprises further:
In described step (2), the mol ratio of chilled water and Sweet natural gas is 20:1-75:1.
5. the method as described in claim 1-4, comprises further:
In described step (2), the pressure in hydrate slurry maker (16,17) is 5-7MPa, and temperature is 5-10 DEG C.
6. the method as described in claim 1-5, comprises further:
In described step (3), hydrate slurry car loading operation is realized by pumping-gravity flow associated form.
7. the method as described in claim 1-6, comprises further:
In described step (4), the flow of hot water, chilled water, Sweet natural gas is regulated to control the growing amount of hydrate slurry in real time by Flux Valve Control device a.
8. a gas hydrate slurry liquid integrated utilization device, comprise hot water generate and chilled water generation unit, hydrate slurry Preparation and storage and gasification unit, hydrate slurry outer defeated and cold energy use unit, hydrate slurry growing amount control unit four parts, wherein:
Hot water generates and chilled water generation unit, comprise three cover hot water cyclesystems, hot water cyclesystem one is by solar energy collector (1), hot water storage tank (2), hot water pump (4) is connected successively by hot water thermal insulating line of pipes, form circulation loop, hot water cyclesystem two is by hot water storage tank (2), hot water pump (5), lithium bromide absorption refrigerating set (8) is connected successively by hot water thermal insulating line of pipes, form circulation loop, hot water cyclesystem three is by hot water storage tank (2), hot water pump (5), lithium bromide absorption refrigerating set (7) is connected successively by hot water thermal insulating line of pipes, form circulation loop,
Hydrate slurry Preparation and storage and gasification unit, comprise two cover refrigerant water systems, refrigerant water system one is incubated line of pipes by lithium bromide absorption refrigerating set (7) by chilled water, hydrate slurry maker (16), hydrate slurry liquid storage tank (21, 22), impeller pump (25) is connected successively, form circulation loop, refrigerant water system two is by lithium bromide absorption refrigerating set (8), hydrate slurry maker (16), hydrate slurry liquid storage tank (21, 22), impeller pump (25) is connected successively by chilled water insulation line of pipes, form circulation loop, by being arranged on the thermometer (9 on pipeline, 12, 28), pressure warning unit (13), magnetic flow meter (11) Real-Time Monitoring operation condition, water tank (32), impeller pump (30) is connected also by pipeline and chilled water insulation line of pipes crosses,
The outer defeated and cold energy use unit of hydrate slurry, comprise Liang Tao hydrate slurry haulage system, haulage system one comprises the hydrate slurry maker (17) be communicated with successively, impeller pump (37), tank car storage tank (38), tank car storage tank (38) is provided with by valve (39), supercharging blower (40) is communicated with the supercharging pipeline of formation successively, liquidometer (41) and tensimeter (45) are arranged in operation box, before tensimeter (43) is arranged on car, haulage system two comprises the hydrate slurry maker (17) be communicated with successively, impeller pump (33), the air/water compound slurry heat exchanger (35) be provided with in fresh-keeping warehouse (36),
Hydrate slurry growing amount control unit, comprise information transferring elements and function unit, temperature sensor and liquid flow sensor are arranged on the outlet of solar energy collector (1) hot water line and lithium bromide absorption refrigerating set (7,8) chilled water pipeline outlet, water level sensor and temperature sensor are arranged on hot water storage tank (2) upper and lower, and it is inner that gas flow sensor is arranged on gas flow regulating valve (15); Control panel can arrange water temperature in solar energy collector (1), Real-Time Monitoring hot water storage tank (2) median water level, water temperature, there is water level Presentation Function, have and surpass water temperature and the instruction of super water-level alarm into water, can be artificial input corresponding weather data (WD) by control panel, chilled water flow information (LF), natural gas temperature information (TM), gas component information (GC), natural pressure force information (PT), gas discharge information (FR); Information transferring elements is made up of treater (E-1, E-2, E-3, E-4), and function unit is made up of Flux Valve Control device (a), hot water flow variable valve (6), chilled water flow control valve (10,26), natural gas flow adjustable valve (15).
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| CN108439541A (en) * | 2018-03-20 | 2018-08-24 | 常州大学 | A method of it carrying out natural gas peak-shaving using hydrate and purifies water |
| CN108728197A (en) * | 2018-08-06 | 2018-11-02 | 西南石油大学 | A kind of oil field accompanying gas recovering device and method |
| CN110345384A (en) * | 2019-08-20 | 2019-10-18 | 西南石油大学 | A kind of shale gas hydrate slurry rapid transport discharge mechanism and method |
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| US20130252324A1 (en) * | 2012-02-29 | 2013-09-26 | Charles Bliss | System for establishing synergism between renewable energy production and fossil energy production |
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| US20130252324A1 (en) * | 2012-02-29 | 2013-09-26 | Charles Bliss | System for establishing synergism between renewable energy production and fossil energy production |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108439541A (en) * | 2018-03-20 | 2018-08-24 | 常州大学 | A method of it carrying out natural gas peak-shaving using hydrate and purifies water |
| CN108439541B (en) * | 2018-03-20 | 2020-10-09 | 常州大学 | Method for natural gas peak regulation and water purification by using hydrate |
| CN108728197A (en) * | 2018-08-06 | 2018-11-02 | 西南石油大学 | A kind of oil field accompanying gas recovering device and method |
| CN108728197B (en) * | 2018-08-06 | 2023-11-14 | 西南石油大学 | Oilfield associated gas recovery device and method |
| CN110345384A (en) * | 2019-08-20 | 2019-10-18 | 西南石油大学 | A kind of shale gas hydrate slurry rapid transport discharge mechanism and method |
| CN110345384B (en) * | 2019-08-20 | 2024-03-26 | 西南石油大学 | Shale gas hydrate slurry rapid transferring and unloading device and method |
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