CN211471336U - Natural gas hydrate continuous reaction device with adsorption and hydration synergistic effect - Google Patents
Natural gas hydrate continuous reaction device with adsorption and hydration synergistic effect Download PDFInfo
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- CN211471336U CN211471336U CN202020109027.5U CN202020109027U CN211471336U CN 211471336 U CN211471336 U CN 211471336U CN 202020109027 U CN202020109027 U CN 202020109027U CN 211471336 U CN211471336 U CN 211471336U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 89
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 50
- 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 33
- 230000036571 hydration Effects 0.000 title claims abstract description 12
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 12
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 91
- 239000007788 liquid Substances 0.000 claims abstract description 90
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000002156 mixing Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 238000010517 secondary reaction Methods 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003345 natural gas Substances 0.000 abstract description 11
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000008247 solid mixture Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of hydrate preparation, and relates to a natural gas hydrate continuous reaction device with synergistic effect of adsorption and hydration, which comprises a gas tank, a feed pipe, a screw pump adsorption kettle, a solid-liquid mixing tank, a water tank, a first-stage reaction kettle, a second-stage reaction kettle, a liquid collecting tank, a hydrate collecting tank, a second-stage gas tank, an active carbon hopper, a screw pump rotor, a buffer plate, a stirrer, a stranding cage rod, a temperature sensor, a motor, a gas supply valve, a gas flow controller, a pressure sensor, a safety valve, a corrugated pipe, a ball valve, a one-way valve, a constant flow pump, a total gas supply valve, a second gas flow controller and a second pressure sensor, wherein the screw pump is utilized to adsorb axe, adsorb natural gas, and active carbon with porous characteristic is used as a carrier, and two-stage reaction is carried out through the first-, the efficient, rapid and continuous reaction of the natural gas hydrate is realized.
Description
The technical field is as follows:
the utility model belongs to the technical field of the hydrate preparation, concretely relates to natural gas hydrate continuous reaction device of absorption and hydration synergism realizes natural gas hydrate's high efficiency and continuous reaction to utilize absorption and hydration synergism, increase the gas storage volume by a wide margin.
Background art:
with the gradual depletion of the reserves of conventional fossil energy such as petroleum and coal, people are beginning to seek new energy in a large scale, and the natural gas hydrate is taken as a new energy source, has abundant reserves in the global range, has an organic carbon content 2 times of the sum of the organic carbon contents of other fossil energy sources, is taken as a future unconventional alternative energy source, and is widely concerned by countries in the world. In addition, the natural gas hydrate has higher gas storage capacity and milder storage conditions, so that the natural gas hydrate has higher application prospect in the field of natural gas storage and transportation. With the continuous promotion of national economic level, the problem of energy safety is increasingly outstanding, and economic green low-carbon development strategy and energy supply side structural reform need to be continuously promoted.
However, the technology is not widely used in industry because the natural gas hydrate generation process has long induction period, slow growth and low water conversion rate in the generation process. The natural gas hydrate is usually generated at the gas-liquid contact surface firstly, and then extends into liquid or gas, so that the increase of the gas-liquid contact area is an effective promoting method. The activated carbon as a typical porous medium contains a large number of micropores and has a large specific surface area, so that the gas-liquid contact area can be greatly increased, and the nucleation and growth kinetics of the hydrate can be greatly improved by taking the activated carbon as a carrier. In addition, the activated carbon has strong adsorption performance, the activated carbon with proper particle size is selected to pre-adsorb gas, and the gas storage capacity of the natural gas can be greatly increased by utilizing a dual mechanism of physical adsorption and hydrate. Meanwhile, the raw material of the activated carbon is easy to obtain, the cost is low, and the method is suitable for large-scale industrial application: the continuous reaction device for the activated carbon immobilized natural gas hydrate disclosed in the Chinese patent 201910952473.4 is characterized in that the main structure comprises a stirring unit, a liquid supply unit, a cooling unit, a primary reaction unit, a secondary reaction unit, a solid-liquid separation unit, a hydrate collection unit and a gas supply unit; the liquid supply unit is connected with the stirring unit, the stirring unit is connected with the cooling unit, the cooling unit is connected with the first-stage reaction unit, the first-stage reaction unit is connected with the second-stage reaction unit, the second-stage reaction unit is respectively connected with the solid-liquid separation unit and the hydrate collection unit, and the gas supply unit is respectively connected with the first-stage reaction unit and the second-stage reaction unit; chinese patent 200610150853.9 discloses a method for forming natural gas hydrate in activated carbon, which comprises adding activated carbon and distilled water into a pressure storage tank with pressure resistance of 20Mpa, wherein the mass ratio of distilled water to activated carbon is 0.8-2.2:1, the pressure in the pressure storage tank is 3-10Mpa, the temperature in the pressure storage tank is-5-25 ℃, then filling natural gas into the pressure storage tank to form natural gas hydrate, the purity of methane in the natural gas is more than 99%, and the reaction time is 30-200 min. Therefore, a natural gas hydrate continuous reaction device based on pre-adsorbed gas and activated carbon is researched and designed, the gas storage capacity of natural gas is improved, efficient storage of the natural gas is realized, and the device has important significance for natural gas storage and transportation and peak regulation.
The invention content is as follows:
the utility model aims to overcome the shortcoming that prior art exists, research and development design an adsorb natural gas hydrate continuous reaction device with hydration synergism, utilize the porous characteristic of active carbon with it as the carrier, at first carry out the gas treatment that adsorbs in advance, increase the gas storage volume, then through the multistage reaction, realize natural gas hydrate's high efficiency, quick, continuous reaction.
In order to achieve the purpose, the utility model relates to a natural gas hydrate continuous reaction device's of absorption and hydration synergism major structure includes a gas pitcher, inlet pipe, screw pump adsorption tank, solid-liquid mixture jar, water pitcher, one-level reation kettle, second grade reation kettle, liquid collecting tank, hydrate collecting tank, No. two gas pitchers, activated carbon hopper, screw pump rotor, buffer board, agitator, hank cage pole, temperature sensor, motor, a gas supply valve, a gas flow controller, a pressure sensor, relief valve, bellows, ball valve, check valve, constant flow pump, total gas supply valve, No. two gas supply valves, No. two gas flow controllers and No. two pressure sensor; the feeding pipe is provided with an active carbon hopper; the first gas tank is connected with the screw pump adsorption kettle through the feeding pipe, the screw pump adsorption kettle is connected with the solid-liquid mixing tank, the solid-liquid mixing tank is respectively connected with the water tank and the first-stage reaction kettle, the first-stage reaction kettle is connected with the second-stage reaction kettle, the second-stage reaction kettle is respectively connected with the liquid collecting tank and the hydrate collecting tank, and the second gas tank which is independently arranged is respectively connected with the screw pump adsorption kettle, the solid-liquid mixing tank, the first-stage reaction kettle and the second-stage reaction kettle; a screw pump rotor is arranged in the screw pump adsorption kettle; the upper part in the solid-liquid mixing tank is provided with a buffer plate, and the lower part is provided with a stirrer; a stranding cage rod is arranged in each of the first-stage reaction kettle and the second-stage reaction kettle; temperature sensors are respectively arranged on the screw pump adsorption kettle, the solid-liquid mixing tank, the primary reaction kettle and the secondary reaction kettle; the screw pump rotor, the stirrer and the stranding cage rod are respectively driven by a motor; a first gas supply valve and a first gas flow controller are arranged between the first gas tank and the feed pipe; a first pressure sensor and a safety valve are arranged at the joint of the feed pipe and the screw pump adsorption kettle; the screw pump adsorption kettle and the solid-liquid mixing tank, the solid-liquid mixing tank and the primary reaction kettle, the primary reaction kettle and the secondary reaction kettle, and the secondary reaction kettle and the liquid collecting tank and the hydrate collecting tank are all connected through corrugated pipes, and ball valves are arranged on the corrugated pipes; a one-way valve and a constant flow pump are arranged between the solid-liquid mixing tank and the water tank; a main gas supply valve is arranged at the bottle head of the second gas tank, and a second gas supply valve, a second gas flow controller and a second pressure sensor are arranged between the main gas supply valve and the screw pump adsorption kettle, between the main gas supply valve and the solid-liquid mixing tank, between the first-stage reaction kettle and between the main gas supply valve and the second-stage reaction kettle.
Compared with the prior art, the utility model, based on abundant specific surface area and the porous characteristic of active carbon, utilize the screw pump to adsorb the axe, adsorb the natural gas, and regard the active carbon that has the porous characteristic as the carrier, increase gas-liquid area of contact, accelerate the nucleation and the power of generating of natural gas hydrate, carry out the two-stage reaction through one-level reation kettle and second grade reation kettle, go forward step by step, improve natural gas hydrate's conversion rate, realize natural gas hydrate's high efficiency, quick and continuous reaction; the gas storage device is simple in structure, natural gas is pre-adsorbed by the activated carbon, and the gas storage capacity is increased by utilizing a dual mechanism of physical adsorption and natural gas hydrate.
Description of the drawings:
fig. 1 is a schematic diagram of the main structure principle of the present invention.
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 natural gas hydrate continuous reaction device with the synergistic effect of adsorption and hydration, which is related by the embodiment, comprises a first gas tank 1, a feeding pipe 2, a screw pump adsorption kettle 3, a solid-liquid mixing tank 4, a water tank 5, a first-stage reaction kettle 6, a second-stage reaction kettle 7, a liquid collecting tank 8, a hydrate collecting tank 9 and a second gas tank 10; no. one gas pitcher 1 passes through inlet pipe 2 and is connected with screw pump adsorption tank 3, screw pump adsorption tank 3 is connected with solid-liquid mixture jar 4, solid-liquid mixture jar 4 is connected with water pitcher 5 and one-level reation kettle 6 respectively, one-level reation kettle 6 is connected with second grade reation kettle 7, second grade reation kettle 7 is connected with liquid collecting tank 8 and hydrate collecting tank 9 respectively, No. two gas pitchers 10 that set up alone are connected with screw pump adsorption tank 3, solid-liquid mixture jar 4, one-level reation kettle 6 and second grade reation kettle 7 respectively.
The feeding pipe 2 related to the embodiment is provided with an activated carbon hopper 11; a screw pump rotor 12 is arranged in the screw pump adsorption kettle 3; the upper part in the solid-liquid mixing tank 4 is provided with a buffer plate 13, and the lower part is provided with a stirrer 14; a stranding cage rod 15 is arranged in each of the first-stage reaction kettle 6 and the second-stage reaction kettle 7; temperature sensors 16 are respectively arranged on the screw pump adsorption kettle 3, the solid-liquid mixing tank 4, the primary reaction kettle 6 and the secondary reaction kettle 7; the screw pump rotor 12, the stirrer 14 and the stranding cage rod 15 are respectively driven by a motor 17; a first air supply valve 18 and a first gas flow controller 19 are arranged between the first gas tank 1 and the feeding pipe 2; a first pressure sensor 20 and a safety valve 21 are arranged at the joint of the feeding pipe 2 and the screw pump adsorption kettle 3; the screw pump adsorption kettle 3 and the solid-liquid mixing tank 4, the solid-liquid mixing tank 4 and the first-stage reaction kettle 6, the first-stage reaction kettle 6 and the second-stage reaction kettle 7, and the second-stage reaction kettle 7 and the liquid collection tank 8 and the hydrate collection tank 9 are connected through a corrugated pipe 22, and a ball valve 23 is arranged on the corrugated pipe 22; a one-way valve 24 and a constant flow pump 25 are arranged between the solid-liquid mixing tank 4 and the water tank 5; a main gas supply valve 26 is arranged at the bottle head of the second gas tank 10, and a second gas supply valve 27, a second gas flow controller 28 and a second pressure sensor 29 are arranged between the main gas supply valve 26 and the screw pump adsorption kettle 3, the solid-liquid mixing tank 4, the first-stage reaction kettle 6 and the second-stage reaction kettle 7.
The feeding pipe 2 related to the embodiment is of a nozzle-shaped structure, and the gas of the first gas tank 1 enters the feeding pipe 2 and then is accelerated at the activated carbon hopper 11 to form negative pressure, so that the dispersion and the suction of activated carbon are facilitated; the liquid collecting tank 8 is a container with a liquid level alarm, when the liquid level reaches a set liquid level, a sound and light alarm is given out to remind a worker to discharge liquid in time, and a filter screen is arranged at an inlet; the screw pump adsorption kettle 3 is an adsorption kettle which takes a screw pump as a conveying and pressurizing element; the liquid level of the solid-liquid mixing tank 4 and the liquid level of the first-stage reaction kettle 6 are kept horizontal, when the liquid level of the solid-liquid mixing tank 4 is low, the constant flow pump 25 is started to supplement liquid, and when the liquid level of the solid-liquid mixing tank 4 is high, the height of the first-stage reaction kettle 6 is adjusted; the first-stage reaction kettle 6 and the second-stage reaction kettle 7 are both stranded cage reaction kettles disclosed in Chinese patent 201910464078.1; the liquid collecting tank 8 is a container with a liquid level alarm function, when the liquid level reaches a set liquid level, a sound and light alarm is generated to remind a worker to discharge liquid in time; the activated carbon hopper 11 is of a funnel-shaped structure; the stranding cage rod 15 is provided with stranding cage blades 30; the motor 17 is a planetary reduction brushless motor; the constant flow pump 25 is used for continuously and stably supplying liquid to the solid-liquid mixing tank 4.
The natural gas hydrate continuous reaction device with the synergistic effect of adsorption and hydration, which is related in the embodiment, is used for producing the natural gas hydrate in a thermostatic chamber provided with a gas alarm, a primary reaction kettle 6 and a secondary reaction kettle 7 are arranged on a rotary bracket, the inclination angle of the rotary bracket is adjusted to 45 degrees, and a temperature sensor 16, a first pressure sensor 20 and a second pressure sensor 29 are respectively connected with a data acquisition box and a computer; setting the temperature of the thermostatic chamber to 1 ℃, opening a main gas supply valve 26 and a second gas supply valve 27, and monitoring the gas consumption through a second gas flow controller 28; when the pressure of the screw pump adsorption kettle 3, the solid-liquid mixing tank 4, the first-stage reaction kettle 6 and the second-stage reaction kettle 7 is 7MPa, the motor 17 is opened, the rotating speed of the motor 17 of the screw pump adsorption kettle 3 is set to be 5r/min, the rotating speed of the motor 17 of the solid-liquid mixing tank 4, the first-stage reaction kettle 6 and the second-stage reaction kettle 7 is set to be 60r/min, when the temperature value of the temperature sensor 16 reaches a set value, the first air supply valve 18 is opened, the gas consumption is monitored through the first gas flow controller 19, meanwhile, activated carbon is added through the activated carbon hopper 11, the activated carbon is entrained into the screw pump adsorption kettle 3 when the gas passes through the bottom of the activated carbon hopper 11, when the pressure of the feed pipe 2 is more than 0.15MPa, the safety valve 21 is opened to automatically release the pressure, the screw pump adsorption kettle 3 is pressurized to 7MPa while conveying a gas-solid mixture, the gas in the second gas tank 10 enters the screw pump adsorption kettle 3, so that the internal pressure of the screw pump adsorption kettle 3 is maintained stable, and the activated carbon is ensured to fully adsorb the gas; the gas-solid mixture enters the solid-liquid mixing tank 4, the adsorption of the activated carbon is increased under the buffer action of the buffer plate 13, and the gas-solid mixture is uniformly scattered into the liquid, the pre-adsorbed gas activated carbon and the liquid are stirred by the stirrer 14 to be fully and uniformly mixed, a preliminary reaction is carried out in the solid-liquid mixing tank 4 to generate a small amount of natural gas hydrate, and the gas in the second gas tank 10 enters the solid-liquid mixing tank 4 to maintain constant pressure; the solid-liquid mixture enters the first-stage reaction kettle 6 to further generate a large amount of natural gas hydrate, and the gas in the second gas tank 10 enters the first-stage reaction kettle 6 to maintain constant pressure; then the mixture of the activated carbon, the water and the natural gas hydrate enters a secondary reaction kettle 7 for further full reaction under the conveying action of a stranding cage rod 15 of a primary reaction kettle 6, and finally a large amount of high-density natural gas hydrate is generated, the gas in a second gas tank 10 enters the secondary reaction kettle 7 to maintain constant pressure, the activated carbon and the natural gas hydrate enter hydrate collecting tanks 9 under the conveying action of the stranding cage rod 15 of the secondary reaction kettle 7, after one hydrate collecting tank 9 is filled, a ball valve 23 is closed, the other hydrate collecting tank 9 is connected with the secondary reaction kettle 7 through a corrugated pipe 22, the ball valve 23 is opened again for continuous collection, and the liquid which does not participate in the reaction flows into a liquid collecting tank 8; before production, the temperature of a thermostatic chamber is set to be 1 ℃, a set amount of liquid is sent into a solid-liquid mixing tank 4 for precooling through a constant flow pump 25, and a first gas tank 1 and a second gas tank 10 are precooled in the thermostatic chamber, so that gas reaches a set reaction temperature before entering a screw pump adsorption kettle 3, the solid-liquid mixing tank 4, a first-stage reaction kettle 6 and a second-stage reaction kettle 7; in the production process, when the gas concentration in the thermostatic chamber reaches a set alarm value, the gas alarm is started.
The temperature regulation range of the thermostatic chamber related to the embodiment is-10-40 ℃; the inclination angle adjusting range of the rotating bracket is 0-90 degrees; the gas is natural gas; the liquid is water.
Claims (3)
1. A natural gas hydrate continuous reaction device with synergistic effect of adsorption and hydration is characterized in that the main structure comprises a first gas tank, a feeding pipe, a screw pump adsorption kettle, a solid-liquid mixing tank, a water tank, a first-stage reaction kettle, a second-stage reaction kettle, a liquid collecting tank, a hydrate collecting tank and a second gas tank; the first gas tank is connected with the screw pump adsorption kettle through the feeding pipe, the screw pump adsorption kettle is connected with the solid-liquid mixing tank, the solid-liquid mixing tank is respectively connected with the water tank and the first-stage reaction kettle, the first-stage reaction kettle is connected with the second-stage reaction kettle, the second-stage reaction kettle is respectively connected with the liquid collecting tank and the hydrate collecting tank, and the second gas tank which is independently arranged is respectively connected with the screw pump adsorption kettle, the solid-liquid mixing tank, the first-stage reaction kettle and the second-stage reaction kettle; the main structure also comprises an active carbon hopper, a screw pump rotor, a buffer plate, a stirrer, a stranding cage rod, a temperature sensor, a motor, a first air supply valve, a first gas flow controller, a first pressure sensor, a safety valve, a corrugated pipe, a ball valve, a one-way valve, a constant flow pump, a main air supply valve, a second gas flow controller and a second pressure sensor; the feed pipe is provided with an active carbon hopper.
2. The natural gas hydrate continuous reaction device with the synergistic effect of adsorption and hydration as claimed in claim 1, wherein a screw pump rotor is arranged in the screw pump adsorption kettle; the upper part in the solid-liquid mixing tank is provided with a buffer plate, and the lower part is provided with a stirrer; a stranding cage rod is arranged in each of the first-stage reaction kettle and the second-stage reaction kettle; temperature sensors are respectively arranged on the screw pump adsorption kettle, the solid-liquid mixing tank, the primary reaction kettle and the secondary reaction kettle; the screw pump rotor, the stirrer and the stranding cage rod are respectively driven by a motor; a first gas supply valve and a first gas flow controller are arranged between the first gas tank and the feed pipe; a first pressure sensor and a safety valve are arranged at the joint of the feed pipe and the screw pump adsorption kettle; the screw pump adsorption kettle and the solid-liquid mixing tank, the solid-liquid mixing tank and the primary reaction kettle, the primary reaction kettle and the secondary reaction kettle, and the secondary reaction kettle and the liquid collecting tank and the hydrate collecting tank are all connected through corrugated pipes, and ball valves are arranged on the corrugated pipes; a one-way valve and a constant flow pump are arranged between the solid-liquid mixing tank and the water tank; a main gas supply valve is arranged at the bottle head of the second gas tank, and a second gas supply valve, a second gas flow controller and a second pressure sensor are arranged between the main gas supply valve and the screw pump adsorption kettle, between the main gas supply valve and the solid-liquid mixing tank, between the first-stage reaction kettle and between the main gas supply valve and the second-stage reaction kettle.
3. A natural gas hydrate continuous reaction device for adsorption and hydration synergy according to any one of claims 1-2, characterized in that the feed pipe is a nozzle-like structure; the liquid collecting tank is a container with a liquid level alarm function, and a filter screen is arranged at an inlet of the liquid collecting tank; the screw pump adsorption kettle takes a screw pump as a conveying and pressurizing element; the liquid level of the solid-liquid mixing tank and the liquid level of the first-stage reaction kettle are kept horizontal; the activated carbon hopper is of a funnel-shaped structure; the stranding cage rod is provided with stranding cage blades.
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| CN202020109027.5U CN211471336U (en) | 2020-01-17 | 2020-01-17 | Natural gas hydrate continuous reaction device with adsorption and hydration synergistic effect |
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| CN202020109027.5U CN211471336U (en) | 2020-01-17 | 2020-01-17 | Natural gas hydrate continuous reaction device with adsorption and hydration synergistic effect |
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