CN210121465U - Hank cage type natural gas hydrate continuous reaction device - Google Patents
Hank cage type natural gas hydrate continuous reaction device Download PDFInfo
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- CN210121465U CN210121465U CN201920801397.2U CN201920801397U CN210121465U CN 210121465 U CN210121465 U CN 210121465U CN 201920801397 U CN201920801397 U CN 201920801397U CN 210121465 U CN210121465 U CN 210121465U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 88
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 title claims abstract description 59
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Abstract
The utility model belongs to the technical field of natural gas hydrate production facility, concretely relates to hank cage formula natural gas hydrate continuous reaction unit, the major structure includes hank cage reation kettle, the collection unit, supersound dispersion unit, control and monitoring unit, the power pack, the air feed unit, supply liquid unit and high low temperature thermostated container, utilize the stirring of hank cage pole in the hank cage reation kettle and supersound dispersion unit to realize natural gas hydrate high efficiency, quick continuous reaction, realize natural gas hydrate's separation and compaction with the help of the through-hole on the hank cage blade and the design of the formula pitch that reduces of hank cage blade, utilize the collection unit to realize natural gas hydrate's collection, and the continuous reaction of natural gas hydrate can further be accelerated by adding dynamics and thermodynamic promoter; the reaction and conversion efficiency of the natural gas hydrate can be improved by utilizing the excellent conveying capacity of the stranding cage structure to the solid and adding porous media such as activated carbon and the like.
Description
The technical field is as follows:
the utility model belongs to the technical field of natural gas hydrate production facility, a hank cage formula natural gas hydrate continuous reaction device is related to.
Background art:
natural gas hydrates are a non-stoichiometric cage-type crystalline compound with guest molecules stored in water molecule cages, and guest molecules with different sizes occupy different water molecule cages, thereby forming different types of hydrates. As a clean energy source, the natural gas hydrate has an important position in the future energy structure due to the characteristics of huge reserves, environmental friendliness and the like. In addition, due to the excellent trapping capacity of the water molecule cage on the guest molecules in the natural gas hydrate and the difference shown when different guest molecules are trapped, the natural gas hydrate also shows unique advantages and wide application prospects in the fields of hydrogen storage, natural gas storage, seawater desalination, gas separation and the like. For natural gas storage, 1m3The natural gas hydrate can be decomposed by 0.8m under standard conditions3Water 160 and 180m3Compared with Compressed Natural Gas (CNG) and liquefied petroleum gas (LNG), natural gas has the advantages of low cost, mild storage environment, safety and the like. However, the relatively harsh growth environment of the natural gas hydrate causes difficult crystallization, long induction period and slow generation speed, so that the popularization and application are limited, the induction period of the natural gas hydrate is shortened, the reaction speed is increased, and the realization of an efficient, rapid and continuous generation technology is the key for further popularization and application. The growth of the natural gas hydrate relates to 4 stages of nucleation, microcrystal, crystallization and aggregation, the heat transfer and mass transfer efficiency is improved by improving the phase equilibrium condition, and a chemical method and a mechanical method are widely used for improving the generation of the natural gas hydrate and achieving good effects. Compared with the chemical method, the mechanical method can realize multi-stage and continuous reaction of the natural gas hydrate, andseparation, compaction and collection, for example: the continuous gas hydrate slurry synthesis device based on the gas throttling technology disclosed in the Chinese patent 201610005395.3 comprises a pi-shaped hydrate reactor, a gas inlet system, a collecting device, a circulating system and a data measuring and controlling system, wherein the pi-shaped hydrate reactor is directly connected with the gas inlet system, the collecting device, the circulating system and the data measuring and controlling system respectively; the pi-type hydrate reactor is divided into a left part and a right part, the right part is a gas hydrate generation area, the gas hydrate automatically flows to the left part after gas hydrate particles float by utilizing the characteristic that the density of the gas hydrate is lower than that of water, and the left part is a separation and collection area of hydrate slurry; the pi-type hydrate reactor comprises a refrigeration coil, a safety valve, a fine-hole filter screen, a hydrate slurry outlet and a water outlet, wherein the refrigeration coil is positioned on the inner wall of the pi-type hydrate reactor and used for accurately controlling the temperature in the pi-type hydrate reactor; the safety valve is positioned at the upper end of the left part of the reactor; the fine-hole filter screen is positioned at the lower end of the left part of the pi-shaped hydrate reactor, is obliquely arranged and attached to the inner wall of the pi-shaped hydrate reactor, and is used for primarily filtering hydrate slurry, wherein the hydrate slurry flows out from a hydrate slurry outlet, and the hydrate slurry outlet cannot allow gas to pass through; the water outlet is arranged at the left lower end of the pi-shaped hydrate reactor and is used for solution circulation; the upper end and the lower end of the pi-shaped hydrate reactor are respectively provided with a plug which can be freely disassembled, so that the installation and the maintenance are convenient; the gas inlet system comprises a high-pressure gas tank, a gas inlet pump, a gas throttling device, a controllable back pressure valve and a dryer, wherein a high-pressure gas source is connected with the gas inlet pump through a pressure reducing valve and conveys gas into the pi-shaped hydrate reactor, so that the hydrate generation environment is in a gas saturation state, and continuous generation of hydrates is ensured; the air inlet pump is communicated with the air throttling device and used for conveying air to the throttling device at constant pressure; the gas throttling device is positioned at the lower end of the right part of the pi-shaped hydrate reactor, and gas flows into the pi-shaped hydrate reactor through the throttling device; the throttling device is in one-way circulation and only allows gas to flow in; the controllable back pressure valve is arranged at the upper end of the right part of the pi-shaped hydrate reactor, is communicated with the dryer and is finally connected to an air inlet pipeline to be connected with an air inlet pump; the collecting device comprises a solid-liquid mixed transportation pump, a one-way check valve and a hydrate slurry storage tank, wherein the solid-liquid mixed transportation pump is connected with the hydrate slurry through the one-way check valveThe outlet is connected and used for collecting the formed hydrate slurry; recovering the collected hydrate slurry to a hydrate slurry storage tank; the circulating system comprises a liquid level sensor, a one-way check valve, a liquid pump, a liquid inlet pump and a solution tank, wherein the liquid level sensor is arranged at the lower end of the left part of the pi-shaped hydrate reactor and is used for measuring the height of the solution obtained after filtration; a water outlet at the lower end of the left part of the pi-shaped hydrate reactor is connected with a one-way check valve, and only water is allowed to flow out from the outlet; the inlet of the liquid pump is connected with the one-way check valve, and the outlet of the liquid pump is communicated with the liquid inlet pump; the liquid pump automatically operates according to the height of the solution obtained after filtration, and the one-way check valve is opened and closed along with the starting and stopping of the liquid pump; when the height of the solution obtained after filtration is larger than a set value, the water amount is excessive, the liquid pump is automatically started to pump the solution, the one-way valve is opened, and the solution obtained after filtration is replenished into the reactor again to realize the recycling of the solution; when the height of the solution obtained after filtration is smaller than a set value, the liquid pump stops running, and the one-way valve automatically closes; a liquid inlet pump communicated with the solution tank automatically operates to replenish liquid into the reactor, and the operation is stopped until the liquid level of the solution at the left part of the reactor is higher than a set value; the data measurement and control system comprises a temperature sensor, a pressure sensor, a data conversion module and an industrial personal computer, wherein the temperature sensor and the pressure sensor are arranged at the upper end of the reactor and are used for detecting the temperature and the pressure in the reactor; the temperature sensor and the pressure sensor are connected with an industrial personal computer through an A/D conversion module, and all pumps and valves are uniformly and automatically controlled by the industrial personal computer; the granulation device for continuously preparing the hydrate disclosed in the Chinese patent 201811521133.8 comprises a hydrate reactor, a steady flow liquid supply system, a steady flow gas supply system, a temperature control system, a granulation extrusion system and a drive control system; the hydrate reactor is a pressure-bearing circular pipe which is horizontally arranged, the bottom of the hydrate reactor is provided with an air inlet, and the side surface of the hydrate reactor is provided with a liquid inlet; the steady flow liquid supply system is used for introducing a solution into the hydrate reactor at a constant speed; the steady flow gas supply system is used for introducing gas into the hydrate reactor at a constant speed; the temperature control system is used for controlling the temperature of the gas and the solution introduced into the hydrate reactor; a granulating and extruding system, which comprises three magnets which are arranged in the hydrate reactor and can move along the axial direction of the hydrate reactorThe magnetic piston is cylindrical, and the outer wall of the magnetic piston is in airtight contact with the inner wall of the hydrate reactor; the driving control system comprises three driving magnetic stripes which are arranged outside the hydrate reactor and can move along the axial direction of the hydrate reactor, the three driving magnetic stripes correspond to the three magnetic pistons one by one, and the magnetic pistons corresponding to the three driving magnetic stripes are driven to move synchronously through the movement of the driving magnetic stripes. Therefore, the mechanical method is the key of the industrial application of the natural gas hydrate.
The invention content is as follows:
the utility model aims to overcome the shortcoming that prior art exists, seek to design a hank cage formula natural gas hydrate continuous reaction device, realize that natural gas hydrate is high-efficient, quick, continuous reaction and separation, compaction and collection.
In order to achieve the purpose, the main structure of the winch type natural gas hydrate continuous reaction device comprises a winch type reaction kettle, a collecting unit, an ultrasonic dispersion unit, a control and monitoring unit, a power unit, a gas supply unit, a liquid supply unit and a high-low temperature constant temperature box; the upper end of the stranding cage reaction kettle is connected with the power unit, the lower end of the stranding cage reaction kettle is connected with the gas supply unit and the liquid supply unit respectively, and partial components of the stranding cage reaction kettle, the collection unit and the ultrasonic dispersion unit, partial components of the control and monitoring unit, the power unit and partial components of the gas supply unit and the liquid supply unit are arranged in the high-low temperature constant temperature box.
The utility model relates to a main structure of a twisting cage reaction kettle, which comprises a barrel, a reaction visual window, a sealing ring, a first pressing plate, a discharge port, an upper plug, a lower plug, a quick-opening clamp, a bearing, a twisting cage rod, twisting cage blades and through holes; the upper portion and the lower part of the barrel of the ring-shaped structure are respectively provided with a group of reaction visual windows in a split mode, a sealing ring is arranged between the barrel and the reaction visual windows, the reaction visual windows and the sealing ring are fixed by a pressing plate bolt type, a discharge port of the circular structure is formed in the upper end of the barrel, the top end and the bottom end of the barrel are respectively sealed by an upper plug and a lower plug, a quick-opening clamp is arranged between the barrel and the upper plug and between the barrel and the lower plug, a bearing is arranged in the lower plug, a twisting cage rod is arranged in the hollow cavity of the barrel, the bearing is connected with the twisting cage rod, twisting cage blades of the spiral structure are arranged on.
The utility model relates to a main structure of a collecting unit, which comprises a ball valve, a corrugated pipe, a collecting tank, a plug, a quick-opening clamp and a collecting visual window; one end and the discharge gate of ball valve are connected, and the other end of ball valve passes through bellows and collecting vessel flexonics, and the top of collecting vessel is provided with the end cap, is provided with quick-open anchor clamps between collecting vessel and the end cap, and the upper portion and the lower part of collecting vessel are run from opposite directions respectively and are collected a set of visual window.
The utility model relates to a main structure of an ultrasonic dispersion unit, which comprises an ultrasonic probe, a sealing gasket, a second pressing plate, a lead and an ultrasonic generator; the ultrasonic probe is embedded in the lower part of the barrel and is far away from the lower plug 1/4, a sealing gasket is arranged between the barrel and the ultrasonic probe, the ultrasonic probe is fixed by a second pressing plate in a bolt mode, and the ultrasonic probe is connected with an ultrasonic generator arranged outside the high-low temperature incubator through a lead penetrating through the second pressing plate.
The utility model relates to a main structure of a control and monitoring unit, which comprises a temperature sensor, a pressure sensor, a cable and a data acquisition box; a temperature sensor is embedded in the lower plug, a pressure sensor is connected with a tee joint arranged on the upper portion of the barrel, the tee joint is further connected with a barrel emptying valve, and the temperature sensor and the pressure sensor are respectively connected with a data acquisition box arranged outside the high-low temperature constant temperature box through cables.
The utility model relates to a main structure of a power unit, which comprises a motor and a magnetic stirring mechanism; the motor is connected with the magnetic stirring mechanism, the magnetic stirring mechanism is connected with the upper plug, and a stirring rod of the magnetic stirring mechanism extends into the barrel through the upper plug to be connected with the stranding cage rod.
The utility model relates to a main structure of an air supply unit, which comprises an air bottle, an air inlet pipeline, an air storage tank, an air-vent valve, an air inlet valve, an air release valve, a second temperature sensor, a second pressure sensor, an air supply pipeline, an air supply valve, an air flow controller and a first one-way valve; the gas cylinder that sets up in high low temperature thermostated container outside passes through the admission line and is connected at the inside gas storage tank of high low temperature thermostated container of setting, be provided with the air-vent valve on the admission line, admission valve and atmospheric valve, the air-vent valve is located the outside of high low temperature thermostated container, admission valve and atmospheric valve are located the inside of high low temperature thermostated container, the upper portion of gas storage tank is provided with No. two temperature sensor and No. two pressure sensor, gas storage tank is connected with hank cage reation kettle through the pipeline of supplying gas, be provided with the valve of supplying gas on the pipeline of supplying gas, gas flow controller and check valve, the tail end of the pipeline of supplying gas passes down end cap and barrel intercommunication.
The utility model relates to a main structure of a liquid supply unit, which comprises a liquid storage tank, a liquid supply pipeline, a advection pump and a second check valve; the liquid storage tank is connected with the stranding cage reaction kettle through a liquid supply pipeline, an advection pump and a second check valve are arranged on the liquid supply pipeline, and the tail end of the liquid supply pipeline penetrates through the lower plug and is communicated with the barrel.
Compared with the prior art, the utility model, utilize the stirring of hank cage pole in the hank cage reation kettle and supersound dispersion unit to realize high-efficient, quick continuous reaction of natural gas hydrate, realize separation and the compaction of natural gas hydrate with the help of the through-hole on the hank cage blade and the design of the formula pitch that reduces of hank cage blade, utilize the collection unit to realize the collection of natural gas hydrate, and can further accelerate the continuous reaction of natural gas hydrate through adding dynamics and thermodynamic accelerator; the excellent conveying capacity of the stranding cage structure to the solid is utilized, and the reaction and conversion efficiency of the natural gas hydrate can be improved by adding porous media such as activated carbon and the like; the device has the advantages of simple structure, convenient use, energy conservation and environmental protection, can realize the secondary reaction of the natural gas hydrate by using the natural gas hydrate slurry as a raw material, improves the conversion efficiency of the natural gas hydrate, and has good application prospect.
Description of the drawings:
fig. 1 is a schematic diagram of the main structure principle of the present invention.
Fig. 2 is a schematic diagram of the main structure principle of the stranding cage reaction kettle and the power unit of the utility model.
Fig. 3 is a schematic diagram of a principle of a main structure of the ultrasonic dispersion unit according to the present invention.
Fig. 4 is a schematic view of the internal installation of the high and low temperature constant temperature box according to the present invention.
Fig. 5 is a process flow diagram of the present invention for carrying out the continuous reaction of natural gas hydrates.
The specific implementation mode is as follows:
the present invention will be further described with reference to the following examples and accompanying drawings.
Example 1:
the main structure of the winch type natural gas hydrate continuous reaction device related to the embodiment comprises a winch type reaction kettle 1, a collecting unit 2, an ultrasonic dispersing unit 3, a control and monitoring unit 4, a power unit 5, an air supply unit 6, a liquid supply unit 7 and a high and low temperature constant temperature box 8; be provided with collection unit 2, supersound dispersion unit 3 and control and monitoring unit 4 on hank cage reation kettle 1, hank cage reation kettle 1's upper end is connected with power unit 5, hank cage reation kettle 1's lower extreme is connected with air feed unit 6 and confession liquid unit 7 respectively, hank cage reation kettle 1, collection unit 2, the partial subassembly of supersound dispersion unit 3, the partial subassembly of control and monitoring unit 4, power unit 5, the partial subassembly of air feed unit 6 and confession liquid unit 7 set up in high low temperature thermostat 8.
The main structure of the stranding cage reaction kettle 1 related to this embodiment includes a cylinder 100, a reaction visible window 101, a seal ring 102, a first pressure plate 103, a discharge port 104, an upper plug 105, a lower plug 106, a quick-opening clamp 107, a bearing 108, a stranding cage rod 109, stranding cage blades 110, and a through hole 111; the upper portion and the lower portion of a cylinder 100 with a circular structure are respectively provided with a group of reaction visual windows 101 in a split mode, a sealing ring 102 is arranged between the cylinder 100 and the reaction visual windows 101, the reaction visual windows 101 and the sealing ring 102 are fixed in a bolt mode through a pressing plate 103, the upper end of the cylinder 100 is provided with a discharge hole 104 with a circular structure, the top end and the bottom end of the cylinder 100 are respectively sealed through an upper plug 105 and a lower plug 106, a quick-opening clamp 107 is arranged between the cylinder 100 and the upper plug 105 and the lower plug 106, a bearing 108 is arranged in the lower plug 106, a twisting cage rod 109 is arranged in the hollow cavity of the cylinder 100, the bearing 108 is connected with the twisting cage rod 109, twisting cage blades 110 with a spiral structure are arranged on the twisting cage blades 109.
The main structure of the collecting unit 2 according to the embodiment includes a ball valve 200, a bellows 201, a collecting tank 202, a plug 203, a quick-opening clamp 204 and a collecting visual window 205; one end of the ball valve 200 is connected with the discharge hole 104, the other end of the ball valve 200 is flexibly connected with a collecting tank 202 through a corrugated pipe 201, a plug 203 is arranged at the top of the collecting tank 202, a quick-opening clamp 204 is arranged between the collecting tank 202 and the plug 203, and the upper part and the lower part of the collecting tank 202 are respectively provided with a group of collecting visual windows 205 in a split mode.
The main structure of the ultrasonic dispersion unit 3 according to the present embodiment includes an ultrasonic probe 300, a gasket 301, a second pressure plate 302, a lead 303, and an ultrasonic generator 304; the ultrasonic probe 300 is embedded in the lower part of the cylinder 100 at a position which is far from the lower plug 1061/4, a sealing gasket 301 is arranged between the cylinder 100 and the ultrasonic probe 300, the ultrasonic probe 300 is fixed by a second pressing plate 302 in a bolt manner, and the ultrasonic probe 300 is connected with an ultrasonic generator 304 arranged outside the high-low temperature incubator 8 through a lead 303 penetrating through the second pressing plate 302.
The main structure of the control and monitoring unit 4 related to the present embodiment comprises a first temperature sensor 400, a first pressure sensor 401, a cable 402 and a data acquisition box 403; a temperature sensor 400 is embedded in the lower plug 106, a pressure sensor 401 is connected with a tee joint arranged at the upper part of the barrel 100, the tee joint is also connected with a barrel emptying valve, and the temperature sensor 400 and the pressure sensor 401 are respectively connected with a data acquisition box 403 arranged outside the high-low temperature incubator 8 through cables 402.
The main structure of the power unit 5 according to the present embodiment includes a motor 500 and a magnetic stirring mechanism 501; the motor 500 is connected with the magnetic stirring mechanism 501, the magnetic stirring mechanism 501 is connected with the upper plug 105, and the stirring rod 502 of the magnetic stirring mechanism 501 extends into the barrel 100 through the upper plug 105 and is connected with the stranding cage rod 109.
The main structure of the gas supply unit 6 according to this embodiment includes a gas cylinder 600, a gas inlet pipe 601, a gas storage tank 602, a pressure regulating valve 603, a gas inlet valve 604, an air release valve 605, a second temperature sensor 606, a second pressure sensor 607, a gas supply pipe 608, a gas supply valve 609, a gas flow controller 610, and a first check valve 611; the gas bottle 600 arranged outside the high-low temperature constant temperature box 8 is connected with the gas storage tank 602 arranged inside the high-low temperature constant temperature box 8 through a gas inlet pipeline 601, the gas inlet pipeline 601 is provided with a pressure regulating valve 603, a gas inlet valve 604 and an air release valve 605, the pressure regulating valve 603 is arranged outside the high-low temperature constant temperature box 8, the gas inlet valve 604 and the air release valve 605 are arranged inside the high-low temperature constant temperature box 8, the upper part of the gas storage tank 602 is provided with a second temperature sensor 606 and a second pressure sensor 607, the gas storage tank 602 is connected with the stranding cage reaction kettle 1 through a gas supply pipeline 608, the gas supply pipeline 608 is provided with a gas supply valve 609, a gas flow controller 610 and a first check valve 611, and the tail end of the gas supply pipeline 608 penetrates through the lower plug 106.
The main structure of the liquid supply unit 7 according to this embodiment includes a liquid storage tank 700, a liquid supply line 701, a advection pump 702, and a second check valve 703; the liquid storage tank 700 is connected with the stranding cage reaction kettle 1 through a liquid supply pipeline 701, a constant flow pump 702 and a second check valve 703 are arranged on the liquid supply pipeline 701, and the tail end of the liquid supply pipeline 701 penetrates through the lower plug 106 to be communicated with the barrel 100.
The stranding cage reaction kettle 1 related to the embodiment can realize continuous generation, separation and extrusion dehydration of natural gas hydrate, the pressure resistance value of the stranding cage reaction kettle 1 is 10MPa, the air pressure and the liquid volume in the stranding cage reaction kettle 1 are kept constant, the liquid volume is smaller than 1/4 of the volume of the inner cavity of the stranding cage reaction kettle 1, and a gas-liquid interface is positioned right above the ultrasonic probe 300; the collecting unit 2 is used for collecting the natural gas hydrate after extrusion dehydration; the ultrasonic dispersion unit 3 is used for increasing the gas-liquid contact area and accelerating the generation of the natural gas hydrate; the control and monitoring unit 4 collects the pressure, temperature and gas flow data inside the stranding cage reaction kettle 1 and displays the data outside; the power unit 5 provides power for the rotation of the stranding cage rod 109 through the magnetic stirring mechanism 501; the air supply unit 6 is used for maintaining the pressure in the stranding cage reaction kettle 1 constant; the liquid supply unit 7 is used for maintaining the liquid amount in the stranding cage reaction kettle 1 constant; the high-low temperature constant temperature box 8 is used for controlling the temperature of gas and liquid in the stranding cage reaction kettle 1, the temperature adjusting range is-20-90 ℃, and programming setting can be carried out; the surfaces of the inner wall of the cylinder 100, the upper plug 105, the lower plug 106, the stranding cage rod 109 and the stranding cage blade 110 are subjected to hydrophobic treatment; the reaction visible window 101 is positioned on the barrel 100 at a position far away from the upper plug 1051/6 and the lower plug 1061/4, the collection visible window 205 is used for observing the collection condition of the natural gas hydrate, and the reaction visible window 101 and the collection visible window 205 are made of high-pressure glass made of high borosilicate materials; the discharge port 104 is convenient for collecting the natural gas hydrate entering the collecting tank 202; the upper plug 105 and the lower plug 106 are respectively matched with a quick-opening clamp 107 to realize the quick-opening function of the barrel 100; the lower plug 106 is provided with 3 holes, one is a mounting hole for mounting the first temperature sensor 400, the other is a gas injection hole for communicating the stranding cage reaction kettle 1 with the gas supply unit 6, the other is a liquid injection hole for communicating the stranding cage reaction kettle 1 with the liquid supply unit 7, and a distributor is embedded at the tail end of a gas injection port and can realize gas dispersion, generate micro bubbles and increase the gas-liquid contact area; one end of the stranding cage rod 109 is connected with the bearing 108, the other end of the stranding cage rod 109 is connected with the magnetic stirring rod 502, the rotation coaxiality of the stranding cage rod 109 and the barrel 100 is guaranteed, the stranding cage rod 109 rotates in an intermittent mode, the rotating speed adjusting range is 0-600r/min, stepless speed regulation can be achieved, and the stranding cage rod 109 can be detached and replaced; the pitch of the stranding cage blades 110 is gradually reduced from bottom to top so as to compact and dehydrate the generated natural gas hydrate, the solid-liquid separation can be realized by the through holes 111, and the gradual pitch of the stranding cage blades 110 and the size, density and hole distribution mode of the through holes 111 are adjusted according to requirements; the plug 203 is matched with the quick-opening clamp 204 to realize the quick-opening function of the collecting tank 202; the ultrasonic generator 304 runs in an intermittent mode, the frequency adjusting range is 0-25kHz, and the power adjusting range is 0-1000W; the motor 500 is a planetary reduction brushless motor; the magnetic stirring mechanism 501 can transmit the power provided by the motor 500 to the stranding cage rod 109 and realize high-pressure sealing inside the stranding cage reaction kettle 1; the constant-flow pump 702 is used to continuously and smoothly supply the liquid in the liquid storage tank 700 to the stranding cage reactor 1.
The concrete technological process of carrying out the natural gas hydrate continuous reaction of the winch-cage type natural gas hydrate continuous reaction device related to the embodiment comprises three steps of checking the tightness, precooling reaction gas and liquid and carrying out the continuous reaction:
(1) and (3) checking the sealing property: a rotating support, a fixed support and a trapezoidal support with the inclination angle adjustment range of 0-90 degrees, which are arranged in the high-low temperature incubator 8, are respectively provided with a stranding cage reaction kettle 1, a collection tank 202 and a gas storage tank 602, and the rest components are arranged according to a main structure schematic diagram; setting the inclination angle of the stranding cage reaction kettle 1 to be 45 degrees, opening the control and monitoring unit 4, zeroing, closing the air release valve 605, setting the pressure regulating valve 603 to be 8MPa, sequentially opening the air inlet valve 604, the air supply valve 609 and the valve of the air bottle 600, and checking the tightness of the stranding cage reaction kettle 1, the air inlet pipeline 601 and the air supply pipeline 608: gas enters the stranding cage reaction kettle 1 from the gas cylinder 600, the internal pressure of the stranding cage reaction kettle 1 is increased, when the pressure is maintained at 8MPa, the gas cylinder 600 is closed to stop gas injection, the change condition of the internal pressure of the stranding cage reaction kettle 1 within 30 minutes is observed through the data acquisition box 403, the pressure is unchanged, the sealing of the stranding cage reaction kettle 1, the gas inlet pipeline 601 and the gas supply pipeline 608 is good, when the pressure is changed, the gas leakage reason is found out to be rectified, and the sealing performance is rechecked until the sealing is good;
(2) precooling reaction gas and liquid: after the tightness inspection is finished, closing the gas supply valve 609, opening the barrel vent valve, venting the gas in the stranding cage reaction kettle 1, closing the barrel vent valve, opening the advection pump 702 to inject a set amount of liquid into the stranding cage reaction kettle 1, setting the pressure regulating valve 603 to be 8MPa, opening the gas supply valve 609, and injecting gas into the gas storage tank 602 and the stranding cage reaction kettle 1; when the internal pressure of the stranding cage reaction kettle 1 is stabilized at 8MPa, gas injection is automatically stopped, the high-low temperature constant temperature box 8 is opened, the refrigeration temperature is set to be 2 ℃, the internal temperatures of the gas storage tank 602 and the stranding cage reaction kettle 1 are monitored in real time through the data acquisition box 403, and when the temperature is reduced to be 2 ℃, precooling of reaction gas and liquid is finished;
(3) carrying out a continuous reaction: opening the motor 500, setting the rotating speed to be 300r/min, starting the ultrasonic generator 304, setting the frequency to be 15kHz and the power to be 600W, synchronously operating the motor 500 and the ultrasonic generator 304 in an intermittent manner of operating for 10 minutes and intermittent operation for 20 minutes, supplementing liquid into the stranding cage reaction kettle 1 in real time through the advection pump 702 according to the gas consumption, maintaining the liquid amount in the stranding cage reaction kettle 1 to be constant, carrying the generated natural gas hydrate by the stranding cage blades 110 and transporting the natural gas hydrate to the discharge port 104, returning the liquid to the bottom of the cylinder 100 along the through hole 111, extruding the natural gas hydrate between the stranding cage blades 110 by the stranding cage blades 110 with gradually reduced screw pitches in the process of transporting the natural gas hydrate to the discharge port 104 to realize dehydration treatment, enabling the natural gas hydrate to enter the collection tank 202 through the discharge port 104, closing the ball valve 200 after the collection tank 202 is full, and (3) taking down the collecting tank 202, connecting the pre-cooled reserved collecting tank with the corrugated pipe 201, and placing the new reserved collecting tank in the high-low temperature constant temperature box 8 for pre-cooling for later use.
Claims (8)
1. A winch cage type natural gas hydrate continuous reaction device is characterized in that a main structure comprises a winch cage reaction kettle, a collecting unit, an ultrasonic dispersing unit, a control and monitoring unit, a power unit, an air supply unit, a liquid supply unit and a high-low temperature thermostat; the upper end of the stranding cage reaction kettle is connected with the power unit, the lower end of the stranding cage reaction kettle is connected with the gas supply unit and the liquid supply unit respectively, and partial components of the stranding cage reaction kettle, the collection unit and the ultrasonic dispersion unit, partial components of the control and monitoring unit, the power unit and partial components of the gas supply unit and the liquid supply unit are arranged in the high-low temperature constant temperature box.
2. The continuous reaction device of the hinge cage type natural gas hydrate as claimed in claim 1, wherein the main structure of the hinge cage reaction kettle comprises a cylinder body, a reaction visual window, a sealing ring, a first pressing plate, a discharge port, an upper plug, a lower plug, a quick-opening clamp, a bearing, a hinge cage rod, a hinge cage blade and a through hole; the upper portion and the lower part of the barrel of the ring-shaped structure are respectively provided with a group of reaction visual windows in a split mode, a sealing ring is arranged between the barrel and the reaction visual windows, the reaction visual windows and the sealing ring are fixed by a pressing plate bolt type, a discharge port of the circular structure is formed in the upper end of the barrel, the top end and the bottom end of the barrel are respectively sealed by an upper plug and a lower plug, a quick-opening clamp is arranged between the barrel and the upper plug and between the barrel and the lower plug, a bearing is arranged in the lower plug, a twisting cage rod is arranged in the hollow cavity of the barrel, the bearing is connected with the twisting cage rod, twisting cage blades of the spiral structure are arranged on.
3. The continuously reacting device of the hinge cage type natural gas hydrate as claimed in claim 1, wherein the main structure of the collecting unit comprises a ball valve, a corrugated pipe, a collecting tank, a plug, a quick-opening clamp and a collecting visual window; one end and the discharge gate of ball valve are connected, and the other end of ball valve passes through bellows and collecting vessel flexonics, and the top of collecting vessel is provided with the end cap, is provided with quick-open anchor clamps between collecting vessel and the end cap, and the upper portion and the lower part of collecting vessel are run from opposite directions respectively and are collected a set of visual window.
4. The winch type natural gas hydrate continuous reaction device according to claim 1, wherein the main structure of the ultrasonic dispersion unit comprises an ultrasonic probe, a sealing gasket, a second pressure plate, a lead and an ultrasonic generator; the ultrasonic probe is embedded in the lower part of the barrel and is far away from the lower plug 1/4, a sealing gasket is arranged between the barrel and the ultrasonic probe, the ultrasonic probe is fixed by a second pressing plate in a bolt mode, and the ultrasonic probe is connected with an ultrasonic generator arranged outside the high-low temperature incubator through a lead penetrating through the second pressing plate.
5. The continuous reaction device of the hinge cage type natural gas hydrate as claimed in claim 1, wherein the main structure of the control and monitoring unit comprises a first temperature sensor, a first pressure sensor, a cable and a data acquisition box; a temperature sensor is embedded in the lower plug, a pressure sensor is connected with a tee joint arranged on the upper portion of the barrel, the tee joint is further connected with a barrel emptying valve, and the temperature sensor and the pressure sensor are respectively connected with a data acquisition box arranged outside the high-low temperature constant temperature box through cables.
6. The winch-cage type natural gas hydrate continuous reaction device according to claim 1, wherein the main structure of the power unit comprises a motor and a magnetic stirring mechanism; the motor is connected with the magnetic stirring mechanism, the magnetic stirring mechanism is connected with the upper plug, and a stirring rod of the magnetic stirring mechanism extends into the barrel through the upper plug to be connected with the stranding cage rod.
7. The hank cage type natural gas hydrate continuous reaction device as claimed in claim 1, wherein the main structure of the gas supply unit comprises a gas cylinder, a gas inlet pipeline, a gas storage tank, a pressure regulating valve, a gas inlet valve, an emptying valve, a second temperature sensor, a second pressure sensor, a gas supply pipeline, a gas supply valve, a gas flow controller and a first one-way valve; the gas cylinder that sets up in high low temperature thermostated container outside passes through the admission line and is connected at the inside gas storage tank of high low temperature thermostated container of setting, be provided with the air-vent valve on the admission line, admission valve and atmospheric valve, the air-vent valve is located the outside of high low temperature thermostated container, admission valve and atmospheric valve are located the inside of high low temperature thermostated container, the upper portion of gas storage tank is provided with No. two temperature sensor and No. two pressure sensor, gas storage tank is connected with hank cage reation kettle through the pipeline of supplying gas, be provided with the valve of supplying gas on the pipeline of supplying gas, gas flow controller and check valve, the tail end of the pipeline of supplying gas passes down end cap and barrel intercommunication.
8. The Hank cage type natural gas hydrate continuous reaction device as claimed in claim 1, wherein the main structure of the liquid supply unit comprises a liquid storage tank, a liquid supply pipeline, a constant flow pump and a second one-way valve; the liquid storage tank is connected with the stranding cage reaction kettle through a liquid supply pipeline, an advection pump and a second check valve are arranged on the liquid supply pipeline, and the tail end of the liquid supply pipeline penetrates through the lower plug and is communicated with the barrel.
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| CN110075756A (en) * | 2019-05-30 | 2019-08-02 | 青岛科技大学 | A kind of cagem type gas hydrates continuous reaction apparatus |
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| CN110075756A (en) * | 2019-05-30 | 2019-08-02 | 青岛科技大学 | A kind of cagem type gas hydrates continuous reaction apparatus |
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