CN101153231B - Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence - Google Patents
Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence Download PDFInfo
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- CN101153231B CN101153231B CN2006101164803A CN200610116480A CN101153231B CN 101153231 B CN101153231 B CN 101153231B CN 2006101164803 A CN2006101164803 A CN 2006101164803A CN 200610116480 A CN200610116480 A CN 200610116480A CN 101153231 B CN101153231 B CN 101153231B
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Abstract
The invention discloses a multi-reaction kettle spray strengthening natural gas hydrate continuous preparation device, and comprises at least two sleeved reaction kettles provided with water current atomization, wherein, a cooling water circulation passage is arranged between the two layers of sleeves, the reaction kettles are connected in series; the top of each reaction kettle is provided with a sprayer, the water flows through a circulation pump to be connected with the sprayers of the reaction kettles; the reaction kettles are connected in series through horizontal water pipes positioned at the lower parts of the reaction kettles; a discharge pipe positioned at the middle and lower part of a main reaction kettle is connected with a separator. The natural gas is made a pressure boost by a compressor and is passed into each reaction kettle, and certain quantity of water is passed into an inductive reaction kettle. The cooling system is turned on to lower the temperature of the natural gas and the water in each reaction kettle to the needed conditions by the reaction, the atomization system of the inductive reaction kettle is turned on, the produced natural gas hydrate is discharged into the main reaction kettle and is continuously made hydration reaction with the water supplied by the inductive reaction kettle. When the water quantity with the generated history of the hydrate in the main reaction kettle meets the requirement, the atomization system of the main reaction kettle is started to prepare and separate the hydration and finally discharge the hydration.
Description
Technical field:
The present invention relates to device and technical process that a kind of multi-reaction kettle spray strengthening prepares gas hydrate continuously.
Background technology:
In the gas industry field, existing Sweet natural gas storaging and transport technology has: by the pipe method transport natural gas; Adopt low temperature technique with natural gas liquefaction (LNG); The special-purpose sorbent material of the Sweet natural gas of packing in storage tank adsorbs Sweet natural gas absorption natural gas-storing (ANG) technology of storage; With conversion of natural gas is technology such as liquid product.Natural gas line is carried the main means that remain the Sweet natural gas international trade at present, but its initial cost is big.LNG is owing to want low-temperature liquefaction, and operation cost is very big.Gas hydrate storaging and transport technology (NGH) is a kind of novel Sweet natural gas storaging and transport technology, and it has the following advantages: energy storage density is big, 1m under standard state
3NGH can store 150～180m
3Sweet natural gas; The technology of preparing condition is easy, and NGH can compare the link of having avoided very low temperature on technology of preparing below the 6MPa, be prepared under-10～10 ℃ of conditions with LNG; The thermal physical characteristic of hydrate is more stable, storage safe; Can carry out the regasify of NGH effectively, adopt the simple heating means just the solid state hydrate directly can be changed into spendable gaseous natural gas.Therefore, the gas hydrate storaging and transport technology might substitute the natural gas liquids technology becomes one of extensive accumulating means of following Sweet natural gas.Because decomposition of hydrate needs a large amount of heats, therefore only need to cut off heat transfer path, just can make hydrate state long-term stability, can guarantee the security in the storage and transport process.
The gas hydrate technology of preparing that realizes industrial application at present can be divided into stirring-type, bubbling style and spraying type.Stirring-type: by stir can strengthen that hydrate forms gas and water contact the dissolving of promotion hydrate and the formation of hydrate.Shortcoming is to need to consume to stir merit, and sealing effectiveness is difficult for guaranteeing.Bubbling style: make hydrate form bubble, enlarge the air-water contact area,, accelerate nucleation rate, reduce induction time to increase the concentration of gas in water in water exercise, fragmentation.But the intact gas of unreacted need boost gas by compressor, mixes entering reactor once more then with other gas, has increased facility investment and maintenance cost.Spraying type: make water atomization form numerous fine liquid particles by using nozzle, increase the air-water contact area in proper order, improve the hydrate generating rate.This mode need not other whipping apptss, make that the preparation facilities design is simpler, and capacity can suitably increase nozzle quantity when increasing.But because the heat that produces in the hydro-combination process easily is collected at water droplet inside, be unfavorable for keeping the hydrate formation condition, therefore, spray pattern prepares in the hydrate process, how to remove the heat in the hydrate generative process fast, preparing gas hydrate for spray pattern, to move towards practicability be very important.
Hydrate formation is similar to the crystallisation process of salt, generally includes to induce nucleation and two stages of growth.Hydrate is induced nucleation to be meant and formed has the process of hydrate nucleus critical size, stable; The hydrate growth is meant that stable nucleus grows into solid water compound crystalline process.
Utilize spray reinforcing to prepare method of gas hydrate and device (I have declared patent of invention), realized the quick preparation of gas hydrate, and found many characteristics for preparing hydrate about spray pattern.
Summary of the invention:
The present invention proposes a kind of multi-reaction kettle spray strengthening gas hydrate device and the technical process of preparation continuously.This device adopts the multi-reaction kettle polyphone to arrange, have two reactors at least, realization is with induced reaction and rapid crystallization Reaction Separation, reach the purpose of controlling two reactions respectively, can shorten gas hydrate preparation process induction time effectively, increase the preparation speed of hydrate, improve the transformation efficiency of hydrate.
The multi-reaction kettle spray strengthening gas hydrate are the device of preparation continuously, is made up of airing system, cooling system, atomization system, reactive system and separation system.Be characterized in:
Reactive system has two reactors at least, and reactor all belongs to the atomization of water current reactor;
Airing system is made up of admission passage and compressor, and an end of admission passage is the gas inlet, and the other end is connected with the inlet mouth of induced reaction still with the main reaction still respectively after via compressor, is used to control the gas pressure in each reactor;
Cooling system is made up of cooling water inlet, water pump, cooling water circulation passage, one end of water-cooled tube is the cooling water inlet, water-cooled tube through water pump, successively with cooling water inlet, inside and outside wall passage, the cooling water outlet of induced reaction still, be communicated with cooling water inlet, inside and outside wall passage, the cooling water outlet series connection of main reaction still, cooling-water flowing is through the inside and outside wall passage of reactor, discharge and recycle by main reaction still cooling water outlet at last, by the temperature of controlled chilling water inlet, just can guarantee that the temperature in each reactor is in the hydrate formation condition;
Atomization system: a Link Port is arranged at the bottom of each reactor, by water pipe, is connected with water circulating pump respectively, is connected to the nozzle at reactor top separately then; Horizontal water pipe by each reactor bottom between two reactors is connected in series;
Separation system: connect a separator on the vent pipe of main reaction still middle and lower part, the hydrate that is used for completing in the main reaction still is discharged.
The multi-reaction kettle spray strengthening gas hydrate technical process of preparation continuously are: after Sweet natural gas arrives the hydrate formation pressure condition of a certain setting by compressor boost, be passed in induced reaction still and the main reaction still, and the water that hydration reaction is required feeds in the induced reaction still.Open cooling water recirculation system, the water in natural gas temperature in two reactors and the induced reaction still is dropped to the required condition of reaction.Open the atomization system of induced reaction still then, atomize water into minimum water droplet and fully contact, form gas hydrate with Sweet natural gas.Generate historical water with having hydrate in the induced reaction still then,, continue simultaneously induced reaction still supplied water symphysis Cheng Shui is proceeded the hydration reaction of induced reaction still by being drained into communicating pipe in the main reaction still.After the water yield that has hydrate generation history in the main reaction still reaches designated water level, open the atomization system of main reaction still, carry out the preparation of hydrate, the hydrate slurry of generation floats on the water surface of main reaction still, enter the hydrate separator by vent pipe, at last hydrate is discharged.
The invention has the beneficial effects as follows: reactive system has two reactors at least, realizes high conversion ground preparation gas hydrate are convenient in induced reaction and the control of rapid crystallization Reaction Separation; Water coolant is by the inside and outside wall passage of induced reaction still and main reaction still, can realize effectively removing hydration reaction is exothermic.
Below in conjunction with accompanying drawing and example the present invention is described in detail.
Description of drawings:
Accompanying drawing is multi-reaction kettle spray strengthening gas hydrate preparation facilities and process flow diagram.
1. gas compressor, 2. vacuum pump, 3. communicating valve, 4. inlet mouth, 5. induced reaction still nozzle, 6. cooling water outlet, 7. induced reaction still, 8. water inlet, 9. water pump, 10. cooling water inlet, 11. cooling water circulating pumps, 12. control valves, 13. topping-up pump, 14. inlet mouths, 15. main reaction still nozzles, 16. main reaction stills, 17. the cooling water inlet, 18. communicating valves, 19. cooling water outlets, 20, the hydrate outlet, 21. topping-up pumps, 22. separate holder
Embodiment:
The present embodiment reactive system adopts two telescopic reactors, i.e. induced reaction still 7 and main reaction still 16, between the two-layer sleeve as cooling water circulation passage.Induced reaction still nozzle 5 is equipped with at the top of induced reaction still, and the side has inlet mouth 4, cooling water inlet 10, and cooling water outlet 6, the middle part sets into the mouth of a river 8, and the bottom is provided with the topping-up pump 13 of realizing atomization of water current.The similar induced reaction still of the aperture arrangement of main reaction still 16.And adopt pipeline to connect.The middle and lower part of main reaction still is communicated with monohydrate outlet 20, vent pipe with separate holder 22 and be connected.The capacity of main reaction still can be greater than the capacity of induced reaction still, nozzle and topping-up pump that the nozzle that is disposed and the capacity of topping-up pump also should be disposed greater than the induced reaction still.
Airing system: natural gas line is communicated with the inlet mouth 4,14 of induced reaction still 7 and main reaction still 16 respectively after via gas compressor 1, and the pipeline that wherein is communicated to the main reaction still is provided with control valve 12.
Cooling system: water coolant is entered the inside and outside wall passage of induced reaction still 7 by cooling water inlet 10 by cooling water circulating pump 11 by pipeline, enter the cooling water inlet 17 of main reaction still 16 by cooling water outlet 6, enter the inside and outside wall passage of main reaction still 16 then, discharge by the cooling water outlet 19 of main reaction still 16 at last, and can be recycled.
Atomization system: the middle part of induced reaction still 7 is provided with a water inlet 8, carries out moisturizing by water pump 9; The water that participates in hydration reaction passes through the bottom pipeline after topping-up pump 13 pressurizations, enters reactor nozzle 5 back sprays; Induced reaction still 7 links to each other by level pipe with the circulating pipe of main reaction still 16 bottoms, between establish control valve 18, the hydrate of finishing in induced reaction still 7 that has forms historical water, can enter in the main reaction still 16 through main reaction still nozzle 15 by level pipe.
Before the gas hydrate preparation, at first vacuumize with vacuum pump, remove the gas of internal system, can carry out by communicating valve 3 after finishing and turn-off.Then Sweet natural gas is pressurizeed by compressor 1, enter induced reaction still 7 and main reaction still 16 respectively, the hydrate that keeps the interior gas pressure of reactor to be in setting forms under the pressure.To participate in the water of hydration reaction sends in the induced reaction still 7 by water pump 9.Utilize external source in reactor, to import water coolant in the inside and outside wall passage,, make under its gas hydrate formation temperature that reaches setting, and keeping in the hydrate preparation process continuously always the cooling of the reactant in two reactors.Open topping-up pump 13, make the water in the induced reaction still 7 enter nozzle 5 by pipeline, by entering in the reactor after the atomizing, realize fully contacting and carrying out hydration reaction of fine liquid particles and Sweet natural gas, after in the induced reaction still, forming hydrate, open communicating valve 18, open topping-up pump 13, the water that will have hydrate reaction history feeds in the main reaction still 16 through main reaction still nozzle 15, carries out the moisturizing of induced reaction still simultaneously.After reaching designated water level, open the topping-up pump of main reaction still, utilize the atomization of water current effect to carry out the preparation of hydrate equally, when natural gas hydrate a large amount of generation when floating on the surface in the main reaction still, by hydrate outlet 20, gas hydrate are put into separation holder 22.
The hydrate that has that the induced reaction still produces forms the hydration reaction speed that historical water can be accelerated the main reaction still, improves the rate of formation of hydrate.The system that is made of induced reaction still and main reaction still or a plurality of principal reaction still can realize the continuous production of hydrate, helps the gas hydrate storaging and transport technology and moves towards practicability.
The present invention can be widely used in chemical engineering, oil gas accumulating and other utilize hydration reaction to realize the technical field of hydrate preparation rapidly and efficiently.
Claims (2)
1. multi-reaction kettle spray strengthening gas hydrate continuous preparation device is made up of airing system, cooling system, atomization system, reactive system and separation system, it is characterized in that:
A) reactive system has two reactors at least, and reactor all belongs to the atomization of water current reactor;
B) airing system is made up of inlet pipe and compressor, and an end of inlet pipe is the gas inlet, and the other end is connected with inlet mouth on the main reaction still with the induced reaction still respectively after via compressor;
C) cooling system is made up of cooling water inlet, water pump, cooling water circulation passage, one end of water-cooled tube is the cooling water inlet, water-cooled tube through water pump, successively with entrance of cooling water, inside and outside wall passage, cooling water outlet, the entrance of cooling water of main reaction still, the inside and outside wall passage of induced reaction still, the cooling water outlet series connection is communicated with, and is discharged and is recycled by main reaction still cooling water outlet at last;
D) atomization system: a water pipe is arranged at the bottom of each reactor, is connected with topping-up pump respectively, is connected to the nozzle at reactor top separately then; Horizontal water pipe by the bottom between two reactors is connected in series;
E) separate stocking system: on the vent pipe of main reaction still middle and lower part, connect a separator.
2. the multi-reaction kettle spray strengthening gas hydrate technical process of preparation continuously is characterized in that:
A) Sweet natural gas, be passed in induced reaction still and the main reaction still, and the water that hydration reaction is required is passed in the induced reaction still behind the pressure condition of the hydrate formation of having set by compressor boost;
B) open cooling water recirculation system, the water in natural gas temperature in two reactors and the induced reaction still is dropped to the required condition of reaction;
C) nozzle atomization system of unlatching induced reaction still atomizes water into minimum water droplet and fully contacts with Sweet natural gas, forms gas hydrate;
D) generate historical water with having hydrate in the induced reaction still,, continue simultaneously induced reaction still supplied water symphysis Cheng Shui is proceeded the hydration reaction of induced reaction still by being drained into communicating pipe in the main reaction still;
E) after the water yield that has hydrate generation history in the main reaction still reaches designated water level, open the nozzle atomization system of main reaction still, carry out the preparation of hydrate, the hydrate slurry that generates floats on the water surface of main reaction still, enter the hydrate tripping device by vent pipe, at last hydrate is discharged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006101164803A CN101153231B (en) | 2006-09-25 | 2006-09-25 | Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence |
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| CN2006101164803A CN101153231B (en) | 2006-09-25 | 2006-09-25 | Multi-reaction kettle spray strengthening gas hydrate continuously producing device and process sequence |
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| CN101153231A CN101153231A (en) | 2008-04-02 |
| CN101153231B true CN101153231B (en) | 2010-10-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101880561B (en) * | 2010-06-30 | 2013-11-20 | 中国科学院力学研究所 | Natural gas hydrate synthesizing device capable of realizing kinds of preparation methods |
| CN110111668B (en) * | 2018-02-01 | 2021-02-05 | 中国石油大学(北京) | Multi-kettle interconnection type natural gas hydrate accumulation/exploitation simulation device and application |
| CN110184107A (en) * | 2019-05-29 | 2019-08-30 | 大庆东油睿佳石油科技有限公司 | A kind of system and application method based on hydrate transportation of natural gas |
| CN112034133B (en) * | 2020-08-06 | 2021-08-03 | 中国科学院广州能源研究所 | Device and method for accelerating generation of natural gas hydrate by using dissolved gas method |
| CN113000004B (en) * | 2021-03-30 | 2022-06-24 | 青岛科技大学 | Spray type hydrate continuous reaction device |
| CN115216349A (en) * | 2021-03-31 | 2022-10-21 | 中国石油化工股份有限公司 | Natural gas and water multi-stage atomization mixing device and method and hydrate synthesis device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181806A (en) * | 1996-01-18 | 1998-05-13 | Bg公开有限公司 | Method of producing gas hydrate |
| CN1570458A (en) * | 2004-05-09 | 2005-01-26 | 中国科学院广州能源研究所 | Gas hydrate high-speed preparing method and apparatus |
| KR20060033143A (en) * | 2004-10-14 | 2006-04-19 | 인하대학교 산학협력단 | Manufacturing apparatus and transportion method of a natural gas solid hydrate |
| CN200987967Y (en) * | 2006-09-25 | 2007-12-12 | 上海理工大学 | Continuous preparing device for spraying reinforcing natural gas hydrate in multiple reaction still |
-
2006
- 2006-09-25 CN CN2006101164803A patent/CN101153231B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1181806A (en) * | 1996-01-18 | 1998-05-13 | Bg公开有限公司 | Method of producing gas hydrate |
| CN1570458A (en) * | 2004-05-09 | 2005-01-26 | 中国科学院广州能源研究所 | Gas hydrate high-speed preparing method and apparatus |
| KR20060033143A (en) * | 2004-10-14 | 2006-04-19 | 인하대학교 산학협력단 | Manufacturing apparatus and transportion method of a natural gas solid hydrate |
| CN200987967Y (en) * | 2006-09-25 | 2007-12-12 | 上海理工大学 | Continuous preparing device for spraying reinforcing natural gas hydrate in multiple reaction still |
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