CN113000004B - Spray type hydrate continuous reaction device - Google Patents
Spray type hydrate continuous reaction device Download PDFInfo
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- CN113000004B CN113000004B CN202110339614.2A CN202110339614A CN113000004B CN 113000004 B CN113000004 B CN 113000004B CN 202110339614 A CN202110339614 A CN 202110339614A CN 113000004 B CN113000004 B CN 113000004B
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/002—Nozzle-type elements
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/108—Production of gas hydrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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Abstract
The invention belongs to the technical field of hydrate reaction equipment, and particularly relates to a spray type hydrate continuous reaction device, which adopts a spray type hydrate reaction mode, wherein a relatively large gas-liquid contact area is formed between atomized small liquid drops and gas, so that mass transfer can be enhanced, the hydration reaction speed is remarkably improved, in the reaction process, small hydrate particles are continuously conveyed out of a reaction kettle by virtue of the pressure difference between a high-pressure environment in the reaction kettle and a low-pressure environment outside the reaction kettle, the continuous production of hydrate is realized, and the problems of a complex mechanical structure and relatively high energy consumption of the traditional screw extrusion conveying mode can be avoided by virtue of the mode of conveying the small hydrate particles by virtue of the pressure difference; the device has a simple structure and a scientific and reliable principle, and can continuously convey hydrate small particles, unreacted liquid and unreacted gas which can be repeatedly utilized from the inside of the reaction kettle to the outside of the reaction kettle by means of the pressure difference between a high-pressure environment in the reaction kettle and a low-pressure environment outside the reaction kettle and the action of the fluidization restrictor.
Description
The technical field is as follows:
the invention belongs to the technical field of hydrate reaction equipment, and particularly relates to a spray type hydrate continuous reaction device for realizing continuous production of hydrates.
Background art:
because of its excellent characteristics, natural gas has become a bigger and bigger proportion in energy supply in recent years, and its development and popularization are severely limited due to the problems of huge distribution regional differences and seasonal imbalance of supply and demand. Although the technologies of compressed natural gas and liquefied natural gas and long-distance gas transmission play a great role in seasonal peak regulation and regional distribution of natural gas, the pressure and temperature conditions during storage and transportation by using the CNG and LNG technologies are very harsh, and the problems of pressure supplement, pipeline maintenance and the like need to be considered in long-distance gas transmission. On the basis, researchers continuously explore and develop new natural gas storage and transportation technologies, and under the background, the natural gas hydrate storage and transportation technologies are produced.
The key point for realizing the natural gas hydrate storage and transportation technology is the continuous production of the natural gas hydrate, and the generation of the natural gas hydrate needs high-pressure and low-temperature environments and is generally carried out in a high-pressure reaction kettle. However, how to continuously convey the hydrate generated in the high-pressure reaction kettle out of the reaction kettle is a technical problem, and the method which is concerned at present adopts a screw extrusion mode to convey the hydrate out of the high-pressure reaction kettle, so that the hydrate can be conveyed out of the high-pressure reaction kettle, and the generated loose hydrate can be further extruded into a more compact state. However, screw extrusion often requires complex mechanical structures. For example, chinese patent 202011069020.6 discloses a gas sampling device for natural gas hydrate, which comprises a simulation sleeve, a simulation drill rod, a motor, a speed reducer, a debris storage chamber, a liquid flow meter, a water pump, a water storage tank, a gas-liquid-solid three-phase separator, a fluidized bed dryer, a nylon collection tank, a debris collection tank, an air charging port, an air pump, and a natural gas sampler, wherein the simulation sleeve is located on a support, the simulation drill rod is provided therein, the simulation drill rod is connected to the motor and the speed reducer, and both ends of the simulation sleeve are respectively provided with a mixture inlet and a mixture outlet; the mixture inlet is respectively connected with a rock debris storage chamber and a liquid flowmeter through pipelines, the rock debris storage chamber is composed of a nylon funnel, a rock debris funnel and a stirrer, and the liquid flowmeter is connected with a water pump and a water storage tank; the mixture outlet is connected with a gas-liquid-solid three-phase separator through a pipeline, the gas-liquid-solid three-phase separator is connected with a water storage tank, the top end of the gas-liquid-solid three-phase separator is provided with a gas outlet, the bottom end of the gas-liquid-solid three-phase separator is provided with a solid outlet, and the solid outlet is connected with a fluidized bed dryer, a nylon collecting barrel and a rock debris collecting barrel; the simulation sleeve is provided with 3 air charging ports, and the air charging ports are connected with an air pump; the simulation sleeve is provided with a natural gas sampler, an inlet of the natural gas sampler is provided with an arc-shaped baffle, a slide rail and an adjustable screw rod, the arc-shaped baffle is connected with the inner wall of the sampler through the slide rail, and the arc-shaped baffle moves up and down on the inner wall of the sampler through adjusting the adjustable screw rod; the two ends of the sampler are provided with a fixed baffle, an adjustable baffle and an adjustable bolt, the fixed baffle and the adjustable baffle are positioned on the same plane, and the fixed baffle and the adjustable baffle are closed or opened by screwing or unscrewing the adjustable bolt; 4-8 parallel baffles are arranged in the sampler, the length of each parallel baffle is smaller than the inner diameter of the sampler, and the parallel baffles are distributed on two sides of the inner wall of the sampler in a staggered manner; the outlet of the sampler is sequentially connected with a gas flowmeter, a gas storage tank and a computer monitoring system; the device for lifting the seabed shallow layer non-diagenesis natural gas hydrate disclosed by the Chinese patent 201820184826.1 comprises a pressure pump, a solid control system, a water-resisting guide pipe, a packer, a double-layer pipe, an upper bridge type channel, a screw motor, a lower bridge type channel, a universal shaft, a screw pump, a nozzle, a flaring short section, a collecting port, a secondary crushing device, a spiral pipe, a separator, an overflow pipe, a sand discharge hole and a drill bit; the solid control system is connected with the inner pipe of the double-layer pipe, and the pressure pump is connected with the annulus of the double-layer pipe; the lower end of the double-layer pipe is connected with an upper bridge type channel, the lower end of the upper bridge type channel is connected with a screw motor, the lower end of the screw motor is connected with a lower bridge type channel, the lower end of the lower bridge type channel is connected with a screw pump, the lower end of the screw pump is connected with a flaring short section, the lower end of the flaring short section is connected with a secondary crushing device, the lower end of the secondary crushing device is connected with a separator, an overflow pipe in the separator penetrates through the center of the secondary crushing device to be connected with the flaring short section, and a sand setting port of the separator is communicated with a sand discharge hole in the center of a drill bit; the natural gas hydrate exploitation device disclosed in chinese patent 202010068241.5 comprises a lifting mechanism and a solid-liquid-gas separation mechanism located in a shaft; the lifting mechanism comprises a single-screw pump, and a front cover is arranged at the bottom inlet end of the single-screw pump; the solid-liquid-gas separation mechanism comprises an outer cylinder and an inner cylinder which are coaxially arranged and positioned outside and inside, and top covers and bases are respectively arranged at the tops and the bottoms of the outer cylinder and the inner cylinder; the middle upper part of the side wall of the inner cylinder is provided with a plurality of through holes for solid-liquid media to pass through; the outlet end at the top of the single-screw pump is communicated with the bottom of the inner cylinder; the top cover is provided with a second driving mechanism for driving the inner cylinder to rotate; a solid-liquid transmission pipeline is arranged in an annular space between the outer barrel and the inner barrel, one end of the solid-liquid transmission pipeline extends to the bottom of the outer barrel, the other end of the solid-liquid transmission pipeline is upwards connected with an inlet of an electric pump on the offshore platform, and an outlet of the electric pump is connected with a solid-liquid storage tank on the offshore platform through an outlet pipe; the top of the inner cylinder is provided with a gas phase transmission pipeline, one end of the gas phase transmission pipeline is inserted into the top of the inner cylinder, and the other end of the gas phase transmission pipeline is upwards connected with a natural gas storage tank on the offshore platform. Because the sealing under high pressure needs to be realized, the motor and the screw are generally in magnetic transmission, and after the hydrate reaction device is amplified, the magnetic transmission device is very heavy and heavy, higher mechanical energy is often required to be consumed, and additional energy consumption is increased. Therefore, a spray type hydrate continuous reaction device is researched and designed to solve the problems and has a good application prospect.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and seeks to design a spray type hydrate continuous reaction device, so that the continuous production of hydrates is realized by means of the pressure difference between the high-pressure environment in a reaction kettle and the low-pressure environment outside the reaction kettle.
In order to achieve the aim, the main structure of the spray type hydrate continuous reaction device comprises a reaction kettle, a fluidization restrictor shell and a pipeline; the bottom of the reaction kettle is connected with a fluidization restrictor, a fluidization restrictor shell is arranged on the periphery of the fluidization restrictor, an air chamber is formed between the fluidization restrictor and the fluidization restrictor shell, and the bottom of the fluidization restrictor is connected with a pipeline.
The reaction kettle related by the invention is composed of a cover body from top to bottom, go up cylinder and last cone and connect gradually the constitution, the inside formation cylinder chamber of going up the cylinder, the inside formation cone chamber of going up the cone, the upper portion of going up the cylinder is provided with intake pipe and the feed liquor pipe that is parallel to each other, the intake pipe is last, the feed liquor pipe is under, the one end of intake pipe and feed liquor pipe all extends to the outside of upper cylinder, equidistant formula is provided with a plurality of gas shower nozzle on the intake pipe, equidistant a plurality of liquid shower nozzle that is provided with on the feed liquor pipe, the periphery of going up the cylinder is provided with the cooling jacket, it presss from both sides the cover chamber to go up to form between cylinder and the cooling jacket, the cooling water export has been seted up on the upper portion of cooling jacket, the cooling water import has been seted up to the lower part of cooling jacket, the bottom circumference of going up the cone is provided with a flange, a flange is provided with a plurality of along circumferencial direction equidistant formula and goes up the through-hole.
The invention relates to a fluidized throttler which is formed by sequentially connecting an upper porous cone, a throttling cylinder and a lower porous cone from top to bottom, wherein an upper vulcanizing conical cavity is formed inside the upper porous cone, a throttling cavity is formed inside the throttling cylinder, a lower vulcanizing conical cavity is formed inside the lower porous cone, an upper flange is arranged on the circumference of the top of the upper porous cone, a lower flange is arranged on the circumference of the bottom of the lower porous cone, a plurality of vent holes are arranged on the upper porous cone and the lower porous cone at equal intervals along a conical bus and in the circumferential direction, and each vent hole is formed by a conical hole and a cylindrical hole.
The invention relates to a shell of a fluidized throttler, which is formed by sequentially connecting a transition cylinder, a lower cone and a lower cylinder from top to bottom, wherein an air inlet is formed in the side wall of the transition cylinder, a second flange is arranged on the circumference of the top of the transition cylinder, a plurality of upper countersunk holes are formed in the second flange at equal intervals along the circumferential direction, a third flange is arranged on the circumference of the bottom of the lower cylinder, and a plurality of lower through holes are formed in the third flange at equal intervals along the circumferential direction.
The circumference of the top of the pipeline is provided with a fourth flange, and a plurality of sinking head holes are formed in the fourth flange at equal intervals along the circumferential direction.
The invention relates to a reaction kettle which is connected with a fluidization restrictor shell through a first flange and a second flange, wherein the fluidization restrictor shell is connected with a pipeline through a third flange and a fourth flange; and sealing rings are arranged between the upper flange and the second flange and between the lower flange and the third flange.
The inner walls of the upper porous cone, the throttling cylinder and the lower porous cone are subjected to super-hydrophobic treatment, so that hydrate particles are prevented from being accumulated on the inner walls, and the liquidity of the hydrate particles and unreacted small droplets is increased.
When the fluidization throttling device is not provided with the lower porous cone, the lower flange is arranged on the circumference of the bottom of the throttling cylinder; when the fluidization restrictor shell is not provided with the lower cylinder, the third flange is arranged on the circumference of the bottom of the lower cone.
When the spray type hydrate continuous reaction device is used, the gas supply pipeline is respectively connected with the gas inlet pipe and the gas inlet hole, the compressor and the first heat exchanger are sequentially arranged between the gas supply pipeline and the gas inlet pipe, and the throttler is arranged between the gas supply pipeline and the gas inlet hole; connecting the liquid supply pipeline with a liquid inlet pipe, and sequentially arranging a water pump and a second heat exchanger between the liquid supply pipeline and the liquid inlet pipe; connecting a pipeline with a gas-liquid-solid separator, and respectively connecting a gas phase pipeline, a liquid phase pipeline and a solid phase pipeline of the gas-liquid-solid separator with a gas supply pipeline, a liquid supply pipeline and a hydrate storage tank; the gas supplied by the gas supply pipeline is increased to a set pressure through the compressor, is reduced to a set temperature through the first heat exchanger, is divided into two paths after reaching a low-temperature condition required by hydration reaction, one path enters the reaction kettle through the gas inlet pipe and participates in the hydration reaction to form hydrate, and the other path enters the gas inlet hole through the throttling of the throttling device to supply gas for the fluidization throttling device; the reaction liquid supplied by the liquid supply pipeline is increased to a set pressure by a water pump, is reduced to a set temperature by a second heat exchanger, enters the reaction kettle through the liquid inlet pipe after reaching the low-temperature condition required by the hydration reaction, and participates in the hydration reaction to form hydrate; after hydration reaction in the reaction kettle, substances discharged by a pipeline comprise hydrate small particles, unreacted reaction liquid and unreacted gas, the hydrate small particles, the unreacted reaction liquid and the unreacted gas are separated by a gas-liquid-solid separator, the unreacted gas is conveyed to a gas supply pipeline, the unreacted reaction liquid is conveyed to a liquid supply pipeline and continuously participates in the hydration reaction, and the hydrate small particles are conveyed to a hydrate storage tank for collection; the addition of the kinetic accelerator and the thermodynamic accelerator in the reaction liquid can improve the speed of the hydration reaction and the gas storage multiple.
Compared with the prior art, the spray type hydrate reaction mode is adopted, the atomized small liquid drops have larger gas-liquid contact area with gas, mass transfer can be enhanced, the hydration reaction speed is obviously improved, in the reaction process, the small hydrate particles are continuously conveyed out of the reaction kettle by means of the pressure difference between the high-pressure environment in the reaction kettle and the low-pressure environment outside the reaction kettle, the continuous production of the hydrate is realized, and the problems of complex mechanical structure and higher energy consumption of the traditional screw extrusion conveying mode can be avoided by means of the mode of conveying the small hydrate particles by means of the pressure difference; the device has the advantages of simple structure, scientific and reliable principle, and environmental protection and energy conservation, and is characterized in that by means of the pressure difference between the high-pressure environment in the reaction kettle and the low-pressure environment outside the reaction kettle, small hydrate particles, unreacted reaction liquid and unreacted gas are continuously conveyed from the reaction kettle to the outside by utilizing the fluidization and throttling functions of the fluidization throttling device, the fluidization functions are used for increasing the mobility of the small hydrate particles, the throttling functions are used for maintaining the pressure in the reaction kettle, the unreacted reaction liquid and the unreacted gas are newly fed into the reaction kettle for hydration reaction, and the small hydrate particles can be continuously obtained.
Description of the drawings:
fig. 1 is a schematic diagram of the main structure of the present invention.
Fig. 2 is a schematic view of the main structure of a fluidization restrictor and a fluidization restrictor housing according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of the main structure of a fluidization restrictor and a fluidization restrictor housing according to embodiment 2 of the present invention.
Fig. 4 is a schematic view of a main structure of the vent hole according to the present invention.
Fig. 5 is a schematic flow chart of the present invention.
The specific implementation mode is as follows:
the invention is further described below by way of an embodiment example in conjunction with the accompanying drawings.
Example 1:
the main structure of the spray type hydrate continuous reaction device related to the embodiment comprises a reaction kettle 1, a fluidization restrictor 2, a fluidization restrictor shell 3 and a pipeline 4; the bottom of the reaction kettle 1 is connected with a fluidization restrictor 2, the periphery of the fluidization restrictor 2 is provided with a fluidization restrictor housing 3, a gas chamber 230 is formed between the fluidization restrictor 2 and the fluidization restrictor housing 3, and the bottom of the fluidization restrictor 2 is connected with a pipeline 4; the reaction kettle 1 is formed by sequentially connecting a cover body 11, an upper cylinder 12 and an upper cone 13 from top to bottom, a cylindrical cavity 121 is formed inside the upper cylinder 12, a conical cavity 131 is formed inside the upper cone 13, an air inlet pipe 14 and a liquid inlet pipe 15 which are parallel to each other are arranged on the upper portion of the upper cylinder 12, the air inlet pipe 14 is arranged on the upper portion, the liquid inlet pipe 15 is arranged on the lower portion, one end of each of the air inlet pipe 14 and the liquid inlet pipe 15 extends to the outside of the upper cylinder 12, a plurality of gas nozzles 141 are arranged on the air inlet pipe 14 at equal intervals, a plurality of liquid nozzles 151 are arranged on the liquid inlet pipe 15 at equal intervals, a cooling jacket 16 is arranged on the periphery of the upper cylinder 12, a jacket cavity 161 is formed between the upper cylinder 12 and the cooling jacket 16, a cooling water outlet 162 is arranged on the upper portion of the cooling jacket 16, a cooling water inlet 163 is arranged on the lower portion of the cooling jacket 16, and cooling water enters the jacket cavity 161 from the cooling water inlet 163, the cooling water flows out of the jacket cavity 161 through a cooling water outlet 162, a first flange 17 is arranged on the circumference of the bottom of the upper cone 13, and a plurality of upper through holes 171 are formed in the first flange 17 at equal intervals along the circumferential direction; the fluidization restrictor 2 is formed by sequentially connecting an upper porous cone 21, a throttling cylinder 22 and a lower porous cone 23 from top to bottom, an upper vulcanization conical cavity 211 is formed inside the upper porous cone 21, a throttling cavity 221 is formed inside the throttling cylinder 22, a lower vulcanization conical cavity 231 is formed inside the lower porous cone 23, an upper flange 24 is arranged on the circumference of the top of the upper porous cone 21, a lower flange 25 is arranged on the circumference of the bottom of the lower porous cone 23, a plurality of vent holes 26 are arranged on the upper porous cone 21 and the lower porous cone 23 at equal intervals along a conical generatrix and in the circumferential direction, and each vent hole 26 is formed by a conical hole 261 and a cylindrical hole 262; the fluidization restrictor shell 3 is formed by sequentially connecting a transition cylinder 31, a lower cone 32 and a lower cylinder 33 from top to bottom, an air inlet 311 is formed in the side wall of the transition cylinder 31, a second flange 34 is arranged on the circumference of the top of the transition cylinder 31, a plurality of upper countersunk holes 341 are formed in the second flange 34 at equal intervals along the circumferential direction, a third flange 35 is arranged on the circumference of the bottom of the lower cylinder 33, and a plurality of lower through holes 351 are formed in the third flange 35 at equal intervals along the circumferential direction; the top circumference of pipeline 4 is provided with fourth flange 41, and a plurality of countersunk head hole 411 has been seted up along equidistant formula of circumferencial direction on fourth flange 41.
When the spray type hydrate continuous reaction device related to the embodiment works, high-pressure gas is sprayed into the reaction kettle 1 through the gas spray nozzle 141, the spraying pressure is P1, high-pressure reaction liquid is sprayed into the reaction kettle 1 through the liquid spray nozzle 151, small liquid drops are formed through atomization, cooling water enters the jacket cavity 161 through the cooling water inlet and flows out of the jacket cavity 161 through the cooling water outlet 162; in the high-pressure and low-temperature environment, small liquid drops react in the falling process to form small hydrate particles, the small hydrate particles and unreacted small liquid drops sequentially pass through the upper vulcanization conical cavity 211, the throttling cavity 221 and the lower vulcanization conical cavity 231 and fall into the pipeline 4 to be discharged, during the period, high-pressure gas enters the gas chamber 230 through the gas inlet 311, constantly blows the hydrate particles on the inner wall surfaces of the upper porous cone 21 and the lower porous cone 23 through the vent holes 26, has the fluidization effect on the hydrate particles, increases the flowability of the hydrate particles, provides certain gas circulation resistance through the throttling effect of the throttling cavity 221, ensures that the inside of the reaction kettle 1 keeps higher pressure, and maintains the high-pressure environment required by hydrate reaction; the pressure of the upper vulcanizing cone cavity 211 before throttling is P2, the pressure of the lower vulcanizing cone cavity 231 after throttling is P3, the injection pressure P1 is greater than the throttling pressure P2, and the pressure P2 before throttling is greater than the pressure P3 after throttling, for example: p1-10 MPa, P2-5 MPa and P3-1 MPa.
Example 2:
the main structure of the spray type hydrate continuous reaction device related to the embodiment is the same as that of the embodiment 1, the fluidization restrictor 2 and the fluidization restrictor shell 3 are different, the fluidization restrictor 2 is formed by sequentially connecting an upper porous cone 21 and a throttling cylinder 22 from top to bottom, an upper vulcanization conical cavity 211 is formed inside the upper porous cone 21, a throttling cavity 221 is formed inside the throttling cylinder 22, an upper flange 24 is arranged on the circumference of the top of the upper porous cone 21, a lower flange 25 is arranged on the circumference of the bottom of the throttling cylinder 22, a plurality of vent holes 26 are arranged on the upper porous cone 21 at equal intervals along a conical bus and the circumferential direction, and each vent hole 26 is formed by a conical hole 261 and a cylindrical hole 262; fluidization restrictor shell 3 is from last to connecting gradually by transition cylinder 31 and lower cone 32 down and constitutes, is provided with inlet port 311 on the lateral wall of transition cylinder 31, and the top circumference of transition cylinder 31 is provided with No. two flanges 34, has seted up a plurality of counter sink 341 along circumferencial direction equidistant formula on No. two flanges 34, and the bottom circumference of lower cone 32 is provided with No. three flanges 35, has seted up a plurality of through-hole 351 along circumferencial direction equidistant formula on No. three flanges 35.
Claims (5)
1. A spray type hydrate continuous reaction device is characterized in that the main structure comprises a reaction kettle, a fluidization restrictor shell and a pipeline; the bottom of the reaction kettle is connected with a fluidization restrictor, the periphery of the fluidization restrictor is provided with a fluidization restrictor shell, and the bottom of the fluidization restrictor is connected with a pipeline; the reaction kettle is formed by sequentially connecting a cover body, an upper cylinder and an upper cone, wherein the upper part of the upper cylinder is provided with an air inlet pipe and a liquid inlet pipe, the periphery of the upper cylinder is provided with a cooling jacket, and the bottom of the upper cone is provided with a first flange; the fluidization restrictor is formed by sequentially connecting an upper porous cone, a throttling cylinder and a lower porous cone, wherein the top of the upper porous cone is provided with an upper flange, the bottom of the lower porous cone is provided with a lower flange, and a plurality of vent holes are arranged on the upper porous cone and the lower porous cone at equal intervals; the fluidization restrictor shell is formed by sequentially connecting a transition cylinder, a lower cone and a lower cylinder from top to bottom, wherein the top of the transition cylinder is provided with a second flange, and the bottom of the lower cylinder is provided with a third flange; an air chamber is formed between the fluidization restrictor and the fluidization restrictor shell; a cylindrical cavity is formed inside the upper cylinder, and a conical cavity is formed inside the upper cone; the gas inlet pipe is arranged above the liquid inlet pipe, one end of the gas inlet pipe and one end of the liquid inlet pipe both extend to the outside of the upper cylinder, the gas inlet pipe is provided with a plurality of gas nozzles at equal intervals, and the liquid inlet pipe is provided with a plurality of liquid nozzles at equal intervals; a jacket cavity is formed between the upper cylinder and the cooling jacket, the upper part of the cooling jacket is provided with a cooling water outlet, and the lower part of the cooling jacket is provided with a cooling water inlet; an upper vulcanizing conical cavity is formed inside the upper porous cone; a throttling cavity is formed inside the throttling cylinder; a lower vulcanizing conical cavity is formed inside the lower porous cone; the vent hole is composed of a conical hole and a cylindrical hole; an air inlet is arranged on the side wall of the transition cylinder; the inner walls of the upper porous cone, the throttling cylinder and the lower porous cone are subjected to super-hydrophobic treatment, so that hydrate particles are prevented from being accumulated on the inner walls, and the liquidity of the hydrate particles and unreacted small droplets is increased.
2. The spray type hydrate continuous reaction device according to claim 1, wherein a flange with the number four is arranged at the top of the pipeline.
3. The spray type hydrate continuous reaction device according to claim 2, wherein a first flange is provided with a plurality of upper through holes at equal intervals along the circumferential direction; a plurality of upper countersunk holes are formed in the second flange at equal intervals along the circumferential direction; a plurality of lower through holes are formed in the third flange at equal intervals along the circumferential direction; a plurality of sinking head holes are formed in the fourth flange at equal intervals along the circumferential direction; the reaction kettle is connected with a fluidization flow controller shell through a first flange and a second flange, the fluidization flow controller shell is connected with a pipeline through a third flange and a fourth flange, when the fluidization flow controller shell is connected with the pipeline, the first flange and the second flange clamp and fasten the upper flange, and the third flange and the fourth flange clamp and fasten the lower flange so as to fix the fluidization flow controller; and sealing rings are arranged between the upper flange and the second flange and between the lower flange and the third flange.
4. The spray type hydrate continuous reaction device as claimed in claim 1, wherein, in operation, high-pressure gas is sprayed into the reaction kettle by the gas nozzle with a spraying pressure of P1, high-pressure reaction liquid is sprayed into the reaction kettle by the liquid nozzle and atomized to form small liquid drops, and cooling water enters the jacket cavity from the cooling water inlet and flows out of the jacket cavity from the cooling water outlet; in the high-pressure and low-temperature environment, small liquid drops react in the falling process to form small hydrate particles, the small hydrate particles and unreacted small liquid drops sequentially pass through an upper vulcanization conical cavity, a throttling cavity and a lower vulcanization conical cavity and fall into a pipeline to be discharged, during the period, high-pressure gas enters an air chamber through an air inlet, constantly blows the hydrate particles on the inner wall surfaces of an upper porous cone and a lower porous cone through an air vent, fluidizes the hydrate particles to increase the fluidity of the hydrate particles, provides certain gas circulation resistance through the throttling function of the throttling cavity, ensures that the inside of a reaction kettle keeps higher pressure, and maintains the high-pressure environment required by hydrate reaction; the pressure before throttling of the upper vulcanizing conical cavity is P2, the pressure after throttling of the lower vulcanizing conical cavity is P3, the injection pressure P1 is greater than the throttling pressure P2, and the pressure before throttling P2 is greater than the pressure after throttling P3.
5. The spray type hydrate continuous reaction device according to claim 1, wherein when in use, a gas supply pipeline is respectively connected with a gas inlet pipe and a gas inlet hole, a compressor and a first heat exchanger are sequentially arranged between the gas supply pipeline and the gas inlet pipe, and a throttler is arranged between the gas supply pipeline and the gas inlet hole; connecting the liquid supply pipeline with a liquid inlet pipe, and sequentially arranging a water pump and a second heat exchanger between the liquid supply pipeline and the liquid inlet pipe; connecting a pipeline with a gas-liquid-solid separator, and respectively connecting a gas phase pipeline, a liquid phase pipeline and a solid phase pipeline of the gas-liquid-solid separator with a gas supply pipeline, a liquid supply pipeline and a hydrate storage tank; the gas supplied by the gas supply pipeline is increased to a set pressure through a compressor, is reduced to a set temperature through a first heat exchanger, is divided into two paths after reaching a low-temperature condition required by a hydration reaction, one path enters a reaction kettle through a gas inlet pipe and participates in the hydration reaction to form a hydrate, and the other path enters a gas inlet hole for supplying gas for a fluidization restrictor after being throttled by a restrictor; the reaction liquid supplied by the liquid supply pipeline is increased to a set pressure by a water pump, is reduced to a set temperature by a second heat exchanger, enters the reaction kettle through the liquid inlet pipe after reaching the low-temperature condition required by the hydration reaction, and participates in the hydration reaction to form hydrate; after hydration reaction in the reaction kettle, substances discharged by a pipeline comprise hydrate small particles, unreacted reaction liquid and unreacted gas, the hydrate small particles, the unreacted reaction liquid and the unreacted gas are separated by a gas-liquid-solid separator, the unreacted gas is conveyed to a gas supply pipeline, the unreacted reaction liquid is conveyed to a liquid supply pipeline and continuously participates in the hydration reaction, and the hydrate small particles are conveyed to a hydrate storage tank for collection; the addition of the kinetic accelerator and the thermodynamic accelerator in the reaction liquid can improve the speed of the hydration reaction and the gas storage multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101153231A (en) * | 2006-09-25 | 2008-04-02 | 上海理工大学 | Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence |
| CN101225338A (en) * | 2007-12-19 | 2008-07-23 | 中国科学院广州能源研究所 | Method and device for quickly preparing natural gas hydrate by employing static hypergravity |
| CN107542431A (en) * | 2017-01-11 | 2018-01-05 | 西南石油大学 | A kind of method of gas hydrates seabed gas-liquid-solid multiphase flowization separation |
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| JP4303666B2 (en) * | 2004-09-29 | 2009-07-29 | 三井造船株式会社 | Fluidized bed reactor for gas hydrate slurry |
| CN103571557B (en) * | 2013-11-12 | 2014-12-24 | 北京化工大学 | Method for preparing natural gas hydrate |
| CN105169995B (en) * | 2015-10-12 | 2017-06-30 | 西南石油大学 | The method of gas hydrates experiment blending tank and storing natural gas hydrate |
| CN207226132U (en) * | 2017-09-21 | 2018-04-13 | 北京百特莱德工程技术股份有限公司 | A kind of powder stores feed bin fluidization system |
| CN110016374B (en) * | 2019-04-25 | 2021-05-11 | 西南石油大学 | Method and equipment for directly separating H2S in natural gas by hydrate method at well head |
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| CN101153231A (en) * | 2006-09-25 | 2008-04-02 | 上海理工大学 | Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence |
| CN101225338A (en) * | 2007-12-19 | 2008-07-23 | 中国科学院广州能源研究所 | Method and device for quickly preparing natural gas hydrate by employing static hypergravity |
| CN107542431A (en) * | 2017-01-11 | 2018-01-05 | 西南石油大学 | A kind of method of gas hydrates seabed gas-liquid-solid multiphase flowization separation |
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