CN104611080B - A device and method for integrated utilization of natural gas hydrate slurry - Google Patents

Abstract

The invention discloses a kind of gas hydrate slurry liquid integrated utilization device and method, relate to energy technology field.The hydrate slurry integrated utilization device of the present invention, including defeated and cold energy use, hydrate slurry growing amount four unit of control outside hot water generation and chilled water generation, hydrate slurry preparation storage and gasification, hydrate slurry.Accordingly, hydrate slurry integrated utilization method includes that hot water generates and chilled water generates, hydrate slurry preparation is stored and gasification, hydrate slurry outer defeated and refrigeration process, hydrate slurry growing amount rate-determining steps.The present invention prepares hydrate slurry by Absorption Refrigerator high-efficiency and continuous, utilizes the automatic control system regulation hydrate slurry growing amount of design, by hydrate slurry heating and gasifying, is sent to urban pipe network, for natural gas peak-shaving；The mobility that hydrate slurry is good, entrucking transport is utilized to solve remote districts user's use gas difficulty；Using hydrate slurry as cool storage medium, pipe is delivered to fresh-keeping warehouse and freezes, and more energy-conservation than traditional chilled water storage system 30% 50%.

Description

A device and method for integrated utilization of natural gas hydrate slurry

technical field

The invention relates to the field of energy technology, in particular to a device and method for integrated utilization of natural gas hydrate slurry.

Background technique

The production and storage of natural gas hydrates require low temperature and high pressure, which have high requirements for refrigeration equipment and storage equipment. Natural gas hydrate has no fluidity, and the loading and unloading process takes a long time, which affects the gas supply efficiency. Water is currently the most widely used heat transport medium, and the heat it transports is sensible heat with a very low heat flux. If the conveying medium with high heat flux density in the form of slurry can be used, the energy consumption of the conveying pump can be saved, the size of the pipeline can be reduced, and the system investment and operating costs can be greatly reduced. It can be seen that it is of great practical significance to solve the problems of high energy consumption and difficult transshipment during the production, storage and transportation of natural gas hydrate. At the same time, in the air conditioning system, it has become the current development trend to use hydrate slurry instead of water as the transport medium.

Compared with natural gas hydrate treatment, natural gas hydrate slurry treatment has the following advantages: (1) easy control of formation and decomposition (2) good fluidity. (3) It can be easily combined with an absorption refrigerator. (4) The treatment process is simple, and the input natural gas is only minimally treated before hydrate crystallization. (5) Generation does not require low temperature or high pressure. (6) No oxidizing agent or catalyst is required in the treatment. (7) It is a high heat flux conveying medium.

At present, the published hydrate or hydrate slurry integrated utilization devices mainly include:

1. Chinese patent CN 103103004A discloses an integrated process and system of natural gas hydrate synthesis-decomposition. This invention patent proposes to transport natural gas hydrate to users through a natural gas hydrate synthesis-decomposition skid-mounted system. However, hydrates are immobile and difficult to transport.

2. Chinese patent CN 103411132A discloses a process and system for hydrate-based natural gas storage and peak regulation. The invention proposes to add a small amount of propane and butane to natural gas, so that the synthesis of natural gas hydrate is lower in pressure and higher in temperature than conventional methods. However, the process and system disclosed in this invention patent are limited to the storage and peak regulation of hydrates, and the various advantages of hydrates are not fully utilized.

3. Chinese patent CN 102927442A uses the low-temperature environment of the seabed, seawater and natural gas produced by offshore drilling platforms to generate hydrate slurry, and the hydrate slurry is transported through submarine pipelines. Due to the extremely complex and harsh seabed environment, it is difficult to guarantee the flow safety of hydrate slurry transported through pipelines.

4. The document "A new peak-shaving technology for preparing natural gas hydrate by using pipeline network pressure" (Natural Gas Industry. 2010, 30(10).) mentions that natural gas hydrate is prepared by making full use of the cold energy generated by natural gas expansion for urban Gas storage and peak shaving. However, hydrates need to be stored at low temperatures, which requires high storage equipment.

From the above published documents and patent retrieval results, it can be seen that the deficiencies of existing integrated utilization devices mainly include:

(1) The device requires high pressure and low temperature to generate natural gas hydrate;

(2) It is difficult to load and transport hydrate, which increases manpower, material and financial resources;

(3) The device does not have the functions of integrating natural gas hydrate slurry preparation, natural gas hydrate slurry peak regulation, storage and transportation of natural gas hydrate slurry, and cold energy utilization.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, and provide an integrated utilization device and method for natural gas hydrate slurry, which is used for natural gas peak regulation, truck loading and transportation, and fresh-keeping storage refrigeration. The problem of high energy consumption in the formation process of natural gas hydrate and difficult transfer of natural gas hydrate in the prior art is solved. At the same time, in the fresh-keeping storage refrigeration technology, the hydrate slurry is used instead of water as the transport medium, which saves a lot of energy.

A method for integrated utilization of natural gas hydrate slurry according to the present invention comprises the following steps:

(1) Hot water generation and refrigerant water generation steps: the solar collector 1 converts solar energy into the heat energy stored in the water body in the solar collector 1 to generate hot water, which flows into the hot water storage tank 2 for storage; when the hot water When the temperature does not meet the preset temperature threshold of the hot water storage tank 2, start the electric heating device 3 for auxiliary heating, divert the hot water in the hot water storage tank 2, and enter the lithium bromide absorption refrigeration unit (7, 8), and the hot water drives the lithium bromide The absorption refrigeration unit (7, 8) generates refrigerant water, and the refrigerant water flows into the hydrate slurry generator (16, 17);

Solar energy is an inexhaustible and inexhaustible clean energy. The lithium bromide absorption refrigeration unit uses the hot water generated by the solar system to drive the generation of refrigerant water. Therefore, the process of generating refrigerant water is low-carbon, environmentally friendly, energy-saving and consumption-reducing;

(2) Hydrate slurry preparation, storage and gasification steps: natural gas enters the natural gas gate station 14 from the high-pressure natural gas pipeline network, and the pressure is 5-7MPa. After a part of the high-pressure natural gas is depressurized through the natural gas gate station 14, the pressure drops to 1.6-2.0 MPa, enter the urban pipeline network, and another part of high-pressure natural gas enters the hydrate slurry generator (16, 17) through the natural gas flow regulating valve 15, and fully mixes with the refrigerant water generated in the above (1) step to generate natural gas hydrate slurry;

The hydrate slurry flows out from the bottom of the hydrate slurry generator 16 and flows into the hydrate slurry storage tanks (21, 22) for storage. The storage pressure is 2-4MPa and the temperature is 5°C. On average, 9480Kg of hydrate can be synthesized per day, and 1197Kg of natural gas can be stored , which basically meets the amount of hydrate formation required for peak regulation;

When natural gas peak shaving is required, the electric heating device 23 heats the hydrate slurry storage tank 21, and the electric heating device 24 heats the hydrate slurry storage tank 22. The hydrate slurry gasifies and enters the urban pipe network, and the water generated by decomposition passes through the The centrifugal pump 25 flows into the lithium bromide absorption refrigeration unit (7, 8) for recycling, and the water tank 32 provides makeup water for the lithium bromide absorption refrigeration unit (7, 8);

(3) Hydrate slurry external transport and refrigeration process steps: a part of the hydrate slurry in the hydrate slurry generator 17 is sent to the tank truck storage tank 38 through pumping-gravity combined transportation, and the tank truck storage tank 38 adopts high-vacuum multi-layer Heat insulation, the tanker transports the hydrate slurry to the natural gas hydrate slurry storage and distribution station, the gas medium in the tanker storage tank is discharged through the valve 44 for recovery, and the hydrate slurry is discharged through the valve 39 to the supercharger 40 for heating and gasification. Return to the top of the inner cylinder to pressurize;

Another part of the hydrate slurry in the hydrate slurry generator 17 is sent to the air/hydrate slurry heat exchanger 35 through the centrifugal pump 33 to cool the fresh-keeping store 36, and the hydrate slurry flows back to the hydrate slurry generator 17 after heat exchange;

(4) Steps for controlling the amount of hydrate slurry generation: input the weather data WD through the control panel, and after receiving the weather data WD, the processor E-1 converts them into electrical signals and transmits them to the solar collector 1, heat storage tank 2, and lithium bromide The absorption refrigerating unit (7, 8), the hot water flow and water temperature information of the solar heat collector, the water level and water temperature information of the heat storage tank, and the refrigerant water flow and water temperature information of the refrigerating unit are respectively transmitted to the processor E-2 for processing; During the transfer process, the corresponding refrigerant water flow information LF, natural gas temperature information TM, natural gas composition information GC, natural gas pressure information PT, and natural gas flow information FR are artificially input through the control panel, and processed by the processor E-3 to generate hydrates The slurry generation information Mass is transmitted to the processor E-2 for processing; the processor E-2 converts the obtained information to the flow regulating valve controller a, and the flow regulating valve controller a controls the hot water flow regulating valve 6 and the refrigerant water flow rate. The openings of the regulating valves (10, 26) and the natural gas flow regulating valve 15 are controlled, and the opening degree information of the flow regulating valves is processed by the processor E-4 and transmitted to the processor E-2 to play the role of feedback regulation.

The method further includes:

In the step (1), the temperature of the hot water is 90°C-105°C, the temperature of the refrigerant water is adjustable within the range of 5-10°C, the flow rate of the hot water is 100m ³ -130m ³ /h, and the flow rate of the refrigerant water is 100- Adjustable within the range of 120m ³ /h.

In the step (2), the molar ratio of refrigerant water to natural gas is 20:1-75:1, the pressure in the hydrate slurry generator (16, 17) is 5-7MPa, and the temperature is 5-10°C.

In the step (3), the loading operation of the hydrate slurry is realized by a combination of pumping and self-flowing.

In the step (4), the flow rate of the hot water, refrigerant water, and natural gas is adjusted in real time by the flow regulating valve controller a to control the generation amount of the hydrate slurry.

The device for realizing the integrated utilization method of hydrate slurry of the present invention: including hot water generation and refrigerant water generation unit, hydrate slurry preparation and storage and gasification unit, hydrate slurry output and cold energy utilization unit, and hydrate slurry generation control unit four parts. in:

Hot water generation and refrigerant water generation unit, including three sets of hot water circulation system, hot water circulation system one is connected by solar collector 1, hot water storage tank 2, and hot water pump 4 through the hot water insulation delivery pipeline to form a circulation loop The hot water circulation system 2 consists of the hot water storage tank 2, the hot water pump 5, and the lithium bromide absorption refrigeration unit 8, which are sequentially connected through the hot water insulation delivery pipeline to form a circulation loop. The hot water circulation system 3 consists of the hot water storage tank 2, the hot water pump 5. The lithium bromide absorption refrigerating unit 7 is sequentially connected through hot water heat preservation pipelines to form a circulation loop;

Hydrate slurry preparation, storage and gasification unit, including two sets of refrigerant water circulation system, refrigerant water circulation system - lithium bromide absorption refrigeration unit 7, hydrate slurry generator 16, hydrate slurry storage tank (21, 22), the centrifugal pumps 25 are connected in sequence to form a circulation loop, and the refrigerant water circulation system 2 consists of a lithium bromide absorption refrigeration unit 8, a hydrate slurry generator 16, a hydrate slurry storage tank (21, 22), and the centrifugal pump 25 are kept insulated by refrigerant water The delivery pipelines are connected in sequence to form a circulation loop. The operating conditions are monitored in real time through the thermometers (9, 12, 28), pressure gauges 13, and electromagnetic flowmeters 11 installed on the pipelines. The water tank 32 and the centrifugal pump 30 are connected through pipelines and connected with the refrigerant Intersection of water insulation delivery pipelines;

Hydrate slurry export and cold energy utilization unit, including two sets of hydrate slurry transportation systems, the first transportation system includes hydrate slurry generator 17, centrifugal pump 37, tank truck storage tank 38 connected in sequence, and tank truck storage tank 38 There is a pressurized pipeline composed of a valve 39 and a supercharger 40 connected in sequence, a liquid level gauge 41 and a pressure gauge 45 are installed in the operation box, and a pressure gauge 43 is installed in front of the vehicle; the second transportation system includes hydrate slurry connected in sequence The air/hydrate slurry heat exchanger 35 provided in the generator 17, the centrifugal pump 33, and the fresh-keeping store 36;

Hydrate slurry generation control unit, including information transmission parts and control parts, temperature sensor and liquid flow sensor are installed at the outlet of hot water pipeline of solar collector 1 and the outlet of refrigerant water pipeline of lithium bromide absorption refrigeration unit (7, 8), the water level Sensors and temperature sensors are installed on the upper and lower parts of the hot water storage tank 2, and the gas flow sensor is installed inside the gas flow regulating valve 15; the control panel can set the water temperature in the solar heat collector 1, and monitor the water level and water temperature in the hot water storage tank 2 in real time , with water level display function, with super water temperature and super water level alarm indication, can artificially input corresponding weather data WD, refrigerant water flow information LF, natural gas temperature information TM, natural gas component information GC, natural gas pressure information through the control panel PT, natural gas flow information FR; information transmission components are composed of processors (E-1, E-2, E-3, E-4), control components are flow regulating valve controller a, hot water flow regulating valve 6, refrigerant Water flow regulating valve (10,26), natural gas flow regulating valve 15 form.

Significant advantages of the present invention are in the following aspects:

(1) Using solar energy system for refrigeration, low-carbon environmental protection, energy saving and consumption reduction, hydrate slurry generation does not require low temperature or high pressure, and requires less energy;

(2) The loading and transportation of hydrate slurry solves the difficulty of gas consumption for users in remote areas and improves the economy of natural gas transportation;

(3) Utilizing the good fluidity of the hydrate slurry, the loading operation of the hydrate slurry is realized by the combination of pumping and self-flowing to save energy;

(4) Through the electric heating device, the hydrate slurry is gasified for natural gas peak shaving, which solves the increasingly serious problem of urban natural gas peak shaving;

(5) Hydrate slurry replaces water for refrigeration in fresh-keeping warehouses, which can reduce normal electricity load and save energy by 30%-50% compared with traditional water storage systems;

(6) The automatic control system is used to adjust the amount of hydrate slurry generated to ensure the effective utilization of hydrate slurry and improve the overall efficiency of the system.

Description of drawings

Fig. 1 is a schematic diagram of the hydrate slurry integrated utilization device of the present invention;

Fig. 2 is a flow chart of the integrated utilization of hydrate slurry in the present invention;

Fig. 3 is the hot water generation and refrigerant water generation unit of the present invention;

Fig. 4 is the hydrate slurry preparation storage and gasification unit of the present invention;

Fig. 5 is the hydrate slurry external delivery and cold energy utilization unit of the present invention;

Fig. 6 is a flow chart of the pumping-artesian loading system of the present invention;

Fig. 7 is the hydrate slurry generation control unit of the present invention;

Fig. 8 is a flow chart of the control flow of hydrate slurry generation in the present invention.

detailed description

The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Natural gas hydrate slurry means that natural gas hydrate is dispersed in the form of solid particles in a multiphase flow to form a slurry. Natural gas hydrate slurry can be produced by utilizing the gas storage potential of natural gas hydrate under appropriate conditions. Natural gas hydrate slurry is convenient for handling and transportation, and each unit of hydrate slurry contains at least 75 times the volume of gas.

Since the decomposition of natural gas hydrate slurry requires more energy, as long as the heat transfer path is cut off, the natural gas hydrate slurry can exist stably for a long time, ensuring the safety of the transportation process. The natural gas hydrate slurry is produced on land, equipped with suitable tanker loading facilities, specially used to transport the natural gas hydrate slurry, which can significantly improve the economics of transportation. The application of hydrate slurry storage and transportation technology in natural gas gate stations is of great significance. On the one hand, natural gas gate stations have sufficient high-pressure natural gas supply, which provides necessary conditions for the generation of hydrate slurry. On the other hand, it is possible to expand the consumer groups of natural gas and push the consumption of natural gas to remote towns and villages, but it is not feasible to achieve this goal by laying pipeline networks in reality.

Natural gas hydrate slurry is a transport medium with high heat flux density, and it can be used for refrigeration in fresh-keeping warehouses to achieve satisfactory refrigeration effects.

Based on the characteristics of the above-mentioned natural gas hydrate slurry, the natural gas hydrate slurry is generated at the natural gas gate station, and then the hydrate slurry is used for natural gas peak shaving, loading and transportation, and fresh-keeping warehouse refrigeration. The specific description is as follows:

As shown in Figure 1, the hydrate slurry integrated utilization device includes a solar collector 1, a heat storage tank 2, a lithium bromide absorption refrigeration unit (7, 8), a hydrate slurry generator (16, 17), and a hydrate slurry generator (16, 17). Slurry storage tanks (21, 22), water tank 32; the specific use of hydrate slurry is: ①, heating and gasification enters the urban pipe network through the natural gas gate station 14; Car storage tank 38 is transported to remote areas.

As shown in Figure 2, the integrated utilization process of hydrate slurry includes hot water generation and refrigerant water generation unit, hydrate slurry preparation storage and gasification unit, hydrate slurry export and cold energy utilization unit, hydrate slurry generation control The unit has four parts.

As shown in Figure 3, the hot water generation and refrigerant water generation unit includes a solar collector 1, a hot water storage tank 2, an electric heating device 3, a hot water pump 4, a hot water pump 5, a hot water flow regulating valve 6, and a lithium bromide absorption Type refrigerating unit 7, lithium bromide absorption refrigerating unit 8; this unit includes three sets of hot water circulation systems. The hot water circulation system one is connected in turn by the solar heat collector 1, the hot water storage tank 2, and the hot water pump 4 through the hot water insulation delivery pipeline to form a circulation loop. The hot water circulation system 2 consists of a hot water storage tank 2, a hot water pump 5, and a lithium bromide absorption refrigerating unit 8 which are sequentially connected through a hot water heat preservation pipeline to form a circulation loop. The hot water circulation system three is connected in turn by the hot water storage tank 2, the hot water pump 5, and the lithium bromide absorption refrigeration unit 7 through the hot water insulation delivery pipeline to form a circulation loop. The solar heat collector 1 converts the solar energy into the heat energy stored in the water body in the solar heat collector 1, and generates hot water with a temperature of 90-105°C and a flow rate of 100-130m ³ /h, and the hot water flows into the heat storage tank 2 for storage . When the hot water temperature does not meet the preset temperature threshold of the hot water storage tank 2, the electric heating device 3 is started for auxiliary heating. The hot water in the hot water storage tank 2 is diverted to enter the lithium bromide absorption refrigeration unit (7, 8). The hot water drives the lithium bromide absorption refrigerating unit (7, 8) to generate refrigerant water with a temperature of 5-10°C and a flow rate of 100-120m ³ /h.

As shown in Figure 4, the hydrate slurry preparation storage and gasification unit includes lithium bromide absorption refrigeration units (7, 8), centrifugal pumps (25, 30), electric heating devices (23, 24), and hydrate slurry storage tanks (21, 22), refrigerant water flow regulating valve (10, 26), thermometer (9, 12, 28), valve (18, 19, 20, 27, 29, 31), natural gas flow regulating valve 15, electromagnetic flowmeter 11. Pressure gauge 13, natural gas gate station 14, hydrate slurry generator 16, water tank 32; this unit includes two sets of refrigerant water circulation systems. Refrigerant water circulation system - The lithium bromide absorption refrigeration unit 7, the hydrate slurry generator 16, the hydrate slurry storage tanks (21, 22), and the centrifugal pump 25 are connected in sequence through the refrigerant water insulation delivery pipeline to form a circulation loop. Refrigerant water circulation system 2 is composed of lithium bromide absorption refrigerating unit 8, hydrate slurry generator 16, hydrate slurry storage tanks (21, 22), and centrifugal pump 25, which are sequentially connected through refrigerant water insulation delivery pipelines to form a circulation loop. Through the thermometers (9, 12, 28) and pressure gauges 13 and electromagnetic flowmeters 11 arranged on the pipelines, the operating conditions are monitored in real time. The water tank 32 and the centrifugal pump 30 are connected through pipelines and intersect with the refrigerant water insulation delivery pipeline. Natural gas enters the natural gas gate station 14 from the high-pressure natural gas pipeline network, and the pressure is 5-7MPa. After part of the high-pressure natural gas is decompressed through the natural gas gate station 14, the pressure drops to 1.6-2.0 MPa and enters the urban pipeline network. Another part of high-pressure natural gas enters the hydrate slurry generator (16, 17) through the natural gas flow regulating valve 15, and fully mixes with the refrigerant water generated by the lithium bromide absorption refrigeration unit (7, 8) to generate natural gas hydrate slurry. The hydrate slurry flows out from the bottom of the hydrate slurry generator 16 and flows into the hydrate slurry storage tanks (21, 22) for storage at a storage pressure of 2-4 MPa and a temperature of 5°C. When natural gas peak shaving is required, the electric heating device 23 heats the hydrate slurry storage tank 21, and the electric heating device 24 heats the hydrate slurry storage tank 22, and the hydrate slurry gasifies and enters the urban pipeline network. The water generated by the decomposition flows into the lithium bromide absorption refrigerating unit (7, 8) through the centrifugal pump 25 for recycling. The water tank 32 provides make-up water for the lithium bromide absorption refrigerating units (7, 8).

By calculating the amount of gas consumed to generate hydrate solid particles, the amount of hydrate solid particles generated can be inferred.

The volume V _g of gas consumed by the formation of hydrate solid particles under standard conditions is calculated as follows:

${\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; g</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; ZR</span>}{\mathrm{<span\; class="notranslate">\; T</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}{{\mathrm{<span\; class="notranslate">\; P</span>}}_{\mathrm{<span\; class="notranslate">\; 0</span>}}}\mathrm{<span\; class="notranslate">\; \&Delta;</span>}{\mathrm{<span\; class="notranslate">\; no</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; \&Center\; Dot;</span><span\; class="notranslate">\; \&CenterDot;</span><span\; class="notranslate">\; \&Center\; Dot;</span><span\; class="notranslate">\; \&Center\; Dot;</span><span\; class="notranslate">\; \&CenterDot;</span>\mathrm{<span\; class="notranslate">\; k</span>}<span\; class="notranslate">\; )</span>$

In the formula: T ₀ and P ₀ are the temperature and pressure under standard conditions, Z is the compressibility factor, R is the gas constant, and Δn _i is the molar amount of consumed gas.

The gas volume V _H stored by a unit volume of hydrate solid particles is calculated as follows:

${\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; h</span>}}<span\; class="notranslate">\; =</span>\frac{{\mathrm{<span\; class="notranslate">\; V</span>}}_{\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; \&delta;</span>}}_{\mathrm{<span\; class="notranslate">\; h</span>}}}{{\mathrm{<span\; class="notranslate">\; m</span>}}_{\mathrm{<span\; class="notranslate">\; h</span>}}}$

In the formula: V _m is the molar volume of gas, δ _H is the density of hydrate solid particles, and M _H is the molar mass of hydrate solid particles.

As shown in Figure 5, the hydrate slurry output and cold energy utilization unit includes centrifugal pumps (33, 37), pressure gauges (43, 45), valves (34, 39, 42, 44), and hydrate slurry generators 17. Air/hydrate slurry heat exchanger 35, fresh storage room 36, tank car storage tank 38, supercharger 40, liquid level gauge 41; System one includes a hydrate slurry generator 17 , a centrifugal pump 37 , and a tanker storage tank 38 connected in sequence. The tank truck storage tank 38 is provided with a pressurization pipeline composed of a valve 39 and a supercharger 40 connected in sequence. The second delivery system includes a hydrate slurry generator 17 , a centrifugal pump 33 , and an air/hydrate slurry heat exchanger 35 provided in a cold storage 36 connected in sequence. Part of the hydrate slurry in the hydrate slurry generator 17 is sent to the tank truck storage tank 38 through the centrifugal pump 37, and the tank truck storage tank 38 adopts high vacuum multi-layer heat insulation. The tank truck transports the hydrate slurry to the natural gas hydrate slurry storage and distribution station. The gaseous medium in the storage tank of the tanker is discharged through the valve 44 for recovery. The hydrate slurry is discharged through the valve 39 to the supercharger 40 for heating and gasification, and then returns to the top of the inner cylinder for pressurization. The purpose of pressurization is to maintain the stability of the hydrate slurry. Liquid level gauge 41 and pressure gauge 45 are installed in the operation box, and pressure gauge 43 is installed in front of the car. Through real-time monitoring of pressure information and liquid level information, transportation safety is ensured. Another part of the hydrate slurry in the hydrate slurry generator 17 is sent to the air/hydrate slurry heat exchanger 35 through the centrifugal pump 33 to cool the fresh-keeping store 36 . After heat exchange, the hydrate slurry is returned to the hydrate slurry generator 17.

As shown in Figure 6, the pumping-self-flow loading system flow includes a hydrate slurry generator 17, a centrifugal pump 37, and liquid filling hoses (46, 47, 48, 49, 50, 51); Z ₀ is hydrate The height of the liquid level in the slurry generator 17, H ₀ is the height difference between the outlet of the hydrate slurry generator 17 and the liquid filling hose, the potential energy of the loading system is Z ₀ +H ₀ , L ₀ , D ₀ and Q ₀ are the pipe length, pipe diameter and flow rate of the hydrate slurry delivery pipeline, respectively. Utilizing the energy provided by the terrain height difference and the centrifugal pump, the hydrate slurry is sent to the liquid loading hose through the pipeline for loading operation. The pumping-gravity loading system can save energy and reduce investment costs.

As shown in Figure 7, the hydrate slurry generation control unit includes processors (E-1, E-2, E-3, E-4), solar collector 1, heat storage tank 2, lithium bromide absorption type Refrigeration unit (7, 8), flow regulating valve controller a, hot water flow regulating valve 6, refrigerant water flow regulating valve (10, 26), natural gas flow regulating valve 15; temperature sensor and liquid flow sensor are installed in the solar collector The outlet of the hot water pipeline of the device 1 and the outlet of the refrigerant water pipeline of the lithium bromide absorption refrigerating unit (7, 8), the water level sensor and the temperature sensor are installed on the upper and lower parts of the hot water storage tank 2, and the gas flow sensor is installed inside the gas flow regulating valve 15; The control panel can set the temperature of the water in the solar collector 1, monitor the water level and temperature in the hot water storage tank 2 in real time, have the function of displaying the water level, and have the alarm indication of the water intake exceeding the water temperature and exceeding the water level, and can artificially input the corresponding weather through the control panel Data WD, refrigerant water flow information LF, natural gas temperature information TM, natural gas component information GC, natural gas pressure information PT, natural gas flow information FR; -4) Composition, the control components are composed of a flow regulating valve controller a, a hot water flow regulating valve 6, a refrigerant water flow regulating valve (10, 26), and a natural gas flow regulating valve 15. The weather data WD is input through the control panel, and after receiving the weather data WD, the processor E-1 converts it into an electrical signal and transmits it to the solar collector 1, the hot water storage tank 2, the lithium bromide absorption refrigeration unit (7, 8), and the solar energy The hot water flow and temperature information of the collector, the water level and temperature information of the hot water storage tank, and the refrigerant water flow and temperature information of the refrigerating unit are transmitted to the processor E-2 for processing; The refrigerant water flow information LF, natural gas temperature information TM, natural gas component information GC, natural gas pressure information PT, and natural gas flow information FR are processed by the processor E-3 to generate the hydrate slurry generation information Mass, which is passed to the processor E- 2 processing; the processor E-2 converts the obtained information to the flow regulating valve controller a, and the flow regulating valve controller a controls the hot water flow regulating valve 6, the refrigerant water flow regulating valve (10, 26), and the natural gas flow regulating valve 15 opening is controlled, and the opening information of the flow regulating valve is processed by the processor E-4 and transmitted to the processor E-2 to play the role of feedback regulation.

As shown in Figure 8, the process of controlling the amount of hydrate slurry generation includes the following steps:

①. Obtain real-time weather data through the Internet, and input weather data through the control panel;

②. Measure the temperature and flow of hot water generated by the solar collector, the level and temperature of hot water in the hot water storage tank, and the temperature and flow of refrigerant water generated by the refrigeration unit;

③. The data of refrigerant water flow, natural gas temperature, natural gas composition, natural gas pressure, and natural gas flow are input through the control panel, processed by the processor, and output data of hydrate slurry generation;

④. Organize the obtained data to judge whether it meets the pre-set hydrate slurry generation evaluation standard requirements. If the evaluation standard requirements are met, reduce the corresponding valve opening through the flow regulating valve controller; if the evaluation standard requirements are not met, pass the flow rate The regulator valve controller increases the corresponding valve opening.

It should be noted that the content in the description of the present invention is to better explain the claims rather than limit the protection scope of the claims. The scope of protection claimed by the present invention is subject to the claims. Changes made on the basis of understanding the contents of the description without creative effort shall also fall within the scope of protection claimed by the present invention.

Claims (8)

1. a gas hydrate slurry liquid integrated utilization method, it is characterised in that: comprise the following steps:

(1) hot water generates and chilled water generation step: solar radiant energy is converted into solar energy heating by solar thermal collector (1) In device (1), water body stores the heat energy having, and generates hot water, and hot water flows into hot water storage tank (2) and stores；When hot water temperature does not meets storage During boiler (2) preset temperature threshold value, start electric heater unit (3) and carry out auxiliary heating, by hot water in hot water storage tank (2) Shunting, enters lithium bromide absorption refrigerating set (7,8), and hot water drives lithium bromide absorption refrigerating set (7,8) to generate cold Matchmaker's water, chilled water flows into hydrate slurry maker (16,17)；

(2) hydrate slurry preparation stores and gasification step: natural gas enters natural valve station (14) from high-pressure natural gas pipe network, Pressure is 5-7MPa, and by a part of high-pressure natural gas after the blood pressure lowering of natural valve station (14), pressure drops to 1.6-2.0MPa, Enter urban pipe network, another part high-pressure natural gas through natural gas flow adjustable valve (15) enter hydrate slurry maker (16, 17), the chilled water generated with above-mentioned (1) step is sufficiently mixed, and generates hydrate slurry；

Hydrate slurry flows out from hydrate slurry maker (16) bottom, flows into storage in hydrate slurry liquid storage tank (21,22) Depositing, pressure store is 2-4MPa, and temperature is 5 DEG C；

When needing to carry out natural gas peak-shaving, hydrate slurry liquid storage tank (21) is heated by electric heater unit (23), electrical heating Hydrate slurry liquid storage tank (22) is heated by device (24), and hydrate slurry gasification enters urban pipe network, decomposes generation Water pump by centrifugation (25) flows into lithium bromide absorption refrigerating set (7,8) and recycles, and water tank (32) is lithium bromide absorption Formula refrigeration unit (7,8) provides make-up water；

(3) the outer defeated and refrigeration process step of hydrate slurry: a part of hydrate slurry warp in hydrate slurry maker (17) Pumping-gravity flow associating mode of movement sends into tank car storage tank (38), and hydrate slurry is transported to the storage of gas hydrate slurry liquid and joins by tank car Standing, the gas medium in tank car storage tank is discharged through valve (44) and is reclaimed, and discharges hydrate slurry through valve (39) and goes to increase After depressor (40) heating and gasifying, return the supercharging of inner core top；

In hydrate slurry maker (17), another part hydrate slurry pump by centrifugation (33) feeding air/water compound serosity changes Hot device (35), 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), processor (E-1) exists After accepting weather data (WD), be converted to the signal of telecommunication and pass to solar thermal collector (1), hot water storage tank (2), lithium bromide Absorption refrigeration unit (7,8), solar thermal collector hot water flow, water temperature information, hot water storage tank water level, water temperature information, system Cold group chilled water flow, water temperature information are delivered separately to processor (E-2) and process；During information is transmitted, artificial By control panel input corresponding chilled water flow information (LF), natural gas temperature information (TM), gas component information (GC), Natural pressure force information (PT), gas discharge information (FR), processed by processor (E-3) and produce hydrate slurry growing amount letter Breath (Mass), passes to processor (E-2) and processes；The conversion of gained information is flowed to flow control valve control by processor (E-2) Device (a) processed, Flux Valve Control device (a) is to hot water flow regulation valve (6), chilled water flow control valve (10,26), natural Air-flow adjustable valve (15) aperture is controlled, and the treated device of flow control valve opening information (E-4) processes and passes to processor (E-2) effect of feedback regulation is played.

2. the method for claim 1, farther includes:

In described step (1), hot water temperature is at 90 DEG C-105 DEG C, and chilled water temperature is adjustable in the range of 5-10 DEG C.

3. method as claimed in claim 1 or 2, farther includes:

In described step (1), hot water flow is at 100m³-130m³/ h, chilled water flow is at 100-120m³Can in the range of/h Adjust.

4. the method for claim 1, farther includes:

In described step (2), chilled water is 20:1-75:1 with the mol ratio of natural gas.

5. the method for claim 1, farther includes:

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 for claim 1, farther includes:

In described step (3), hydrate slurry car loading operation is realized by pumping-gravity flow associated form.

7. the method for claim 1, farther includes:

In described step (4), regulated the flow of hot water, chilled water, natural gas in real time by Flux Valve Control device a Control the growing amount of hydrate slurry.

8. a gas hydrate slurry liquid integrated utilization device, generates and chilled water signal generating unit, hydrate slurry including hot water Preparation is stored and gasification unit, hydrate slurry outer defeated and cold energy use unit, four portions of hydrate slurry growing amount control unit Point, wherein:

Hot water generates and chilled water signal generating unit, and including three set hot water cyclesystems, hot water cyclesystem one is by solar thermal collector (1), hot water storage tank (2), heat-exchanger pump (4) be sequentially connected with by hot water thermal insulating feed-line, constitute closed circuit, hot water follows Loop systems two is passed through hot water thermal insulating feed-line by hot water storage tank (2), heat-exchanger pump (5), lithium bromide absorption refrigerating set (8) Being sequentially connected with, constitute closed circuit, hot water cyclesystem three is by hot water storage tank (2), heat-exchanger pump (5), suction-type lithium bromide system Cold group (7) is sequentially connected with by hot water thermal insulating feed-line, constitutes closed circuit；

Hydrate slurry preparation stores and gasification unit, and including two set refrigerant water systems, refrigerant water system one is by cold Matchmaker's water insulation feed-line is by lithium bromide absorption refrigerating set (7), hydrate slurry maker (16), hydrate slurry liquid storage tank (21,22), centrifugal pump (25) are sequentially connected, and constitute closed circuit, and refrigerant water system two is by lithium bromide absorbing type refrigeration Unit (8), hydrate slurry maker (16), hydrate slurry liquid storage tank (21,22), centrifugal pump (25) pass through chilled water Insulation feed-line is sequentially connected with, and constitutes closed circuit, by the thermometer (9,12,28) being arranged on pipeline, piezometer (13), operating condition monitored in real time by electromagnetic flowmeter (11), water tank (32), centrifugal pump (30) by pipeline connect and and Chilled water insulation feed-line crosses；

The outer defeated and cold energy use unit of hydrate slurry, including Liang Tao hydrate slurry transportation system, transportation system one includes successively The hydrate slurry maker (17) of connection, centrifugal pump (37), tank car storage tank (38), tank car storage tank (38) is provided with by valve Door (39), supercharger (40) are sequentially communicated the supercharging pipeline of composition, and liquidometer (41) and Pressure gauge (45) are arranged in control box, Pressure gauge (43) is arranged on Herba Plantaginis, hydrate slurry maker (17) that transportation system two includes being sequentially communicated, centrifugal pump (33), Air/water compound slurry heat exchanger (35) being provided with in fresh-keeping warehouse (36)；

Hydrate slurry growing amount control unit, passes including information transferring element and control parts, temperature sensor and fluid flow Sensor is arranged on the outlet of solar thermal collector (1) hot water piping and lithium bromide absorption refrigerating set (7,8) chilled water pipeline goes out Mouthful, level sensor and temperature sensor are arranged on hot water storage tank (2) upper and lower, and gas flow sensor is arranged on gas Flow control valve (15) is internal；Control panel can arrange water temperature in solar thermal collector (1), monitors hot water storage tank (2) in real time Middle water level, water temperature, have water level display function, have into water surpass water temperature and super water-level alarm instruction, can be artificial by control Panel inputs corresponding weather data (WD), 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 element by processor (E-1, E-2, E-3, E-4) constitute, control parts by Flux Valve Control device (a), hot water flow regulation valve (6), chilled water Flow control valve (10,26), natural gas flow adjustable valve (15) form.