CN101776204B - Fume impact water-spinning LNG heating and gasifying device - Google Patents

Abstract

The invention relates to an LNG heating and gasifying device applicable to medium-scale and small-scale areas, in particular to a fume impact water-spinning LNG heating and gasifying device, wherein the top of a cylindrical shell (12) is provided with a combustion chamber which comprises an inner barrel (16) and an outer barrel (3), the top of the inner barrel (16) is provided with a combustor (1), the lower end of the outer barrel (3) is provided with a conical spout (11), a heat exchange surface arrangement space (4) is formed between the outer barrel (3) and the shell (12), a fume exhaust pipeline (14) is arranged at the upper part, a jacket layer (2) is formed between the outer barrel (3) of the combustion chamber and the inner barrel (16), the bottom of the jacket layer (2) is communicated with the conical sprout (11) and the top thereof is communicated with the fume exhaust pipeline (14) by a circulating flue (17), the lower part of the shell (12) is provided with a water pool (10) for storing water, an inverted umbrella-shaped pneumatic water spinner (7) is soaked in the water surface part of the water pool (10), and pile coils (5) which are arranged round the outer barrel (3) of the combustion chamber in a spiral ascending manner are arranged in the heat exchange surface arrangement space (4). The invention has simple and compact structure, wide work load range, convenient operation and maintenance, high heat efficiency and quick speed for gas supply, and is suitable for heating and gasifying LNG by medium-scale and small-scale gasification stations.

Description

A kind of fume impact water-spinning LNG heating and gasifying device

Technical field

The present invention relates to a kind of LNG heating and gasifying device, particularly relate to the LNG heating and gasifying device that is applicable to that the middle and small scale zone is used.

Background technique

Rock gas is the inflammable gas of in the gas field, exploiting out naturally, and main component is gases such as methane, ethane, is a kind of clean energy resource; Have characteristics such as efficient, accumulating convenience, and its resource is abundanter; Become in the common recognition of the whole world in current energy-saving and emission-reduction, rock gas is more and more favored as clean energy resource, and a lot of countries all classify it as preferred fuels; The ratio of rock gas in energy supply increases sharply, and therefore becomes one of direction of world energy sources development.According to the rock gas application plan of China, the domestic production ability will reach 900 billion cubic meters in 2010, will be 2400 billion cubic meters to the year two thousand twenty; And aspect inlet natural gas; The Committee of Development and Reform expects the year two thousand twenty, and China wants import 350 billion cubic meters, is equivalent to 2,500 ten thousand tons/year.Aspect transportation; Rock gas often adopts pipeline transport, like the pipeline of transfering natural gas from the west to the east pipeline and the Central Asia three states to the China that ventilates in the recent period, or with natural gas condensatesization; Dwindle greatly behind its volume with the transportation of the traffic tool such as ship, car, as from Southeast Asia with the import of Large LNG cargo ship; Aspect storage, rock gas generally adopts underground gas storage, tube bank gas storage or large-size spherical tank gas storage, and LNG more has its advantage, only needs less storage liquid container just can preserve a large amount of rock gases.

LNG (Liquefied Natural Gas), the i.e. english abbreviation of LNG Liquefied natural gas.LNG is cooled to-162 ℃, the liquid that makes it to condense and form with being natural gas in gaseous state at normal temperatures and pressures.Can practice thrift storage and transportation space and cost greatly after the natural gas liquefaction, every cubic metre of LNG just can be gasificated into 625 cubic metres rock gas under the normal pressure, so LNG is usually used in trade transportation or strategic reserves.Because imported L NG helps natural gas consumption state to realize the energy supply diversification, ensures energy security; And outlet LNG helps the effective development of natural gas resource of gas production state, increases the foreign exchange income, promotes national economic development, thereby the LNG trade is just becoming the new focus of global energy markets.The production of global LNG and trade in recent years is active day by day, and LNG becomes the whole world and increases one of the swiftest and the most violent energy industry just with the speed increment in every year about 12%.For guaranteeing the energy supply diversification and improve energy consumption structure, some energy-consuming big countries more and more pay attention to the introduction of LNG, and Japan, Korea S, the U.S., Europe are all in construction LNG receiving station on a large scale.The also numerous and confused profit growth point that it is new of international major oil companies turns to LNG professional, and LNG will become the popular energy commodity of oil next afterwards whole world contention.

China's natural gas resource is poor relatively, and the proportion of rock gas in Chinese primary energy consumption is very little up to now.From the development situation of Chinese gas industry, because resource-constrained, gas production is far smaller than demand, and insufficiency of supply-demand is increasing, thereby must need import, and 2,910,000 tons of LNG of Chinese import in 2007 are more than 3 times of import volume in 2006.The import total amount of the 1-11 month in 2008 China LNG is 3,140,000 tons, than increasing by 18% the same period in 2007.Can predict, in the time of following 10-20, the LNG industry is inevitable to be developed rapidly in China, and LNG will become the main force of Chinese market for natural gas.Therefore; China more and more payes attention to the development of LNG industry; China just spreads all over provinces and cities such as Guangdong, Fujian, Zhejiang, Shanghai, Jiangsu, Shandong, Liaoning in the coastal LNG project of planning and implementation, and these projects will finally constitute a coastal LNG receiving station and transport net.

Yet when using LNG, still need its first heat air is changed into the rock gas under the required pressure and temp of technology, could supply the actual use of engineering, so in the LNG air supply system, the heating and gasifying equipment must be arranged, capital equipment wherein is exactly the LNG heating and gasifying device.Several kinds of heating and gasifying devices below the main at present employing of China:

1. water hot type gasification installation: this type gasification installation fixedly mounts with aluminium alloy post, and its basic heating element is a heat-transfer pipe.Be arranged in tabularly by some heat-transfer pipes, two ends link to each other with liquid collecting or gas collection header, are welded into tube sheet; Form gasification installation by some tube sheets again, drencher is equipped with at the device top, and water or seawater spraying are on the tube sheet outer surface; Rely on action of gravity to flow from top to bottom; LNG flows in pipe from bottom to top, and in this process, LNG is heated gasification.The advantage of this type device is that operating cost is lower, convenient operating maintenance, and load regulation range is bigger; Shortcoming is that initial cost is bigger, and vaporization ability receives the influence of factors such as weather bigger, reduces with temperature, and vaporization ability descends, and some position possibly freeze during work, and heat-transfer effect is reduced, and therefore the inlet water temperature of device should be controlled at more than 5 ℃ usually; This type device is usually used in the large-scale gasification occasion of base load type.

2. immersion type burning hot type gasification installation: this type gasification installation mainly is made up of shell, burner, three parts of coil pipe; Its working procedure is that fuel burns with the air mixing postignition in burner; The high-temperature flue gas that produces sprays into the pond through air jet pipe and directly contacts with water, agitate water intensely, and coil pipe is immersed in the pond; LNG in the coil pipe and the outer highly water heat exchange of turbulence of pipe, endothermic gasification.The advantage of this gasification oven is a compact structure, saves the space, and heat transfer efficiency is high, and initial cost is less, is applicable to the occasion that load variations is bigger, is usually used in urgency or peak regulation state; Shortcoming is that operating cost is higher.

3. air heating type gasification installation: the normal heat exchanging tube that has extended surfaces such as fin that adopts of this type device is formed pipe row, LNG several backhauls of in pipe row, flowing, the air LNG in the heating pipe that then between pipe row, flows.The advantage of this type device is simple in structure, and operating cost is low, and management maintenance is convenient; Shortcoming is because of the thermal capacity of air is little, so the investment of unit natural gas gasifying amount is higher, and floor space is big; And vaporization ability is less, also receives the influence of environmental conditions, when lower or humidity is big when temperature; Can freeze between pipe row, thereby reduce effective heat transfer area, and stop up air communication channel; Influence heat exchange greatly, therefore generally be used for the less occasion of amount of vaporization.

4. middle heat-carrying agent type gasification installation: this type device is mainly by cylinder type shell, heating tube nest be heated parts such as tube bank and form; Heat-carrying agent such as propane, butane, fluorine Lyons etc. in the middle of being full of in the shell; Heating tube nest be heated tube bank all be immersed in the middle of in the heat-carrying agent, introduce remaining hot water or seawater in the heating pipe, heat-carrying agent in the middle of heating with this; Middle heat-carrying agent after the intensification heats the LNG that is heated in the tube bank again, makes it the gasification that heats up.The advantage of this type device is that operating cost is low, and compact structure takes up an area of for a short time, ice formation issues can not take place; Shortcoming is a heating tube nest and be heated tube bank and need the employing alloy material because of corrosion protection, so cost height and integrated heat efficiency are lower; The LNG heating and gasifying system that generally is used for the base load type.Be augmentation of heat transfer, this type device also has the fuel combustion of employing to produce the middle heat-carrying agent of high-temperature flue gas entering heating tube nest heating now, and effect is preferably obtained with augmentation of heat transfer in the flow field of taking measures to strengthen heat transfer medium in the cylindrical body; Certainly after adopting burner, improved heat-transfer effect greatly, increased LNG gasification load, but operating cost increased, initial cost has also risen.

5. vapor heating type gasification installation: this type gasification installation needs steam source, and when device started, LNG flowed in the tube bank of being heated, and steam is mobile outside pipe, and LNG is gasified by steam heating, reaches the air feed requirement.The advantage of this type device is a compact structure, and efficient is high, good reliability, and range of operation is wide, and temperature control is easily; Shortcoming is to want steam source, and initial cost is high, and operating cost is high; This type device is applicable to the LNG cargo ship, is handling under the situation such as inert gas removing and purifying, emergency service rock gas, liquid tank inerting, and LNG or liquid nitrogen etc. gasify rapidly.

Above-mentioned LNG heating and gasifying device respectively has characteristics, also is applicable to some occasions separately.In the community of some big and medium-sized cities, especially need a kind of adaptation middle and small scale air demand at present, promptly per hour air demand is about 5000 to 10000 cubic metres, compact structure; Invest lowlyer, the thermal efficiency is high, and air feed speed is fast; The heating and gasifying device that is suitable for peak regulation, the heating and gasifying stove of making a general survey of above-mentioned existing technology is all not too suitable, and perhaps structure is too complicated; Investment is high, and day air demand is too big or too little, unsuitable zone life air feed; Perhaps heating and gasifying is unstable, and rate of gasification and the thermal efficiency are on the low side, can not regulate automatically, can not satisfy peak, occasion that paddy difference is big, and therefore, urgent need changes to some extent and improves.

Summary of the invention

The objective of the invention is to provide a kind of working load scope wide, simple and compact for structure, operation maintenance is convenient, and the thermal efficiency is high, and air feed speed is fast, is fit to the LNG heating and gasifying device that use at middle-size and small-size LNG heating and gasifying station.

The objective of the invention is to realize by following structure:

A kind of fume impact water-spinning LNG heating and gasifying device is characterized in that:

In install combustion chamber, the top of vertical enclosed cylindrical housing, the firing chamber is made up of inner core and urceolus, the top install combustion device of inner core, and the lower end of urceolus is a conical nozzle; Between the inwall of the outer wall of urceolus and cylindrical housing, form the heat exchanger surface arrangement space, offer gas exhaust duct on the top of heat exchanger surface arrangement space;

Between muff and inner core, constitute the chuck layer, the bottom of chuck layer is communicated with conical nozzle, and the top of chuck layer is communicated with gas exhaust duct through cycle flue;

The gas exhaust duct register is set in gas exhaust duct, the cycle flue register is set in cycle flue;

The bottom of vertical enclosed cylindrical housing is the pond of accumulating water; The partially submerged air-flow of being inverted umbrella that is of the water surface in pond revolves water; The center that air-flow revolves water is for to the pinnacle of upper process, by the pinnacle downwards and to around expansion be the curved surface that slightly is bent upwards again after earlier down to disk border with certain curve shape;

In the heat exchanger surface arrangement space, arranged the coil pipe that rises in the shape of a spiral and arrange around muff; One end of coil pipe is the LNG import, and the other end is a gas outlet.

Further; Said coil pipe is divided into coil pipe and lower coil pipe two-part; Last coil pipe is around the muff arrangement of rising in the shape of a spiral; Lower coil pipe rises in the shape of a spiral to arrange and is immersed in the pond of cylindrical housing bottom, air-flow revolve water be arranged in lower coil pipe above, interconnect by connecting tube between last coil pipe and the lower coil pipe.

Further,, said air-flow offers some apertures on revolving the curved surface of water.

Further, said gas exhaust duct register and cycle flue register can be whole unlatchings, Close All respectively or partly open three kinds of states.

Further, said spout and air-flow revolve the distance between the pinnacle of water be spout to spout air-flow jet core top distance ± 10% in.

Further, the cross section and the air-flow of said firing chamber inner core, urceolus, spout revolve the plan view profile of water should be consistent be circle or rectangle.

Further, to revolve the curve of the curved surface foundation of water be parabola, circular arc or hyp arc curve to said air-flow.

Further, said spout ejection airspeed is more than 20m/s.

The design philosophy of a kind of fume impact water-spinning LNG heating and gasifying device of the present invention is: the high-temperature flue gas that the employing fuel combustion produces is loaded and speed with increase and quickening LNG gasification as thermal source; And controllable load excursion; Do not receive external interference; Last coil pipe is a heating medium with the high-temperature flue gas of entrained drip, mist and steam, through convection heat exchange and phase transition heat augmentation of heat transfer; In addition, heat exchanger surface is divided into two-part up and down, on the basis of last coil pipe, lower coil pipe is immersed in the pond in addition, and as the rock gas in the thermal source heating lower coil pipe, water heats with high-temperature flue gas, can control the temperature of export gas so better with water.

The characteristics and the advantage of patent of the present invention are:

1. designed the umbrella shape air-flow and revolved water, like Fig. 3, shown in 4, high-temperature flue gas high speed impact air-flow revolves the water period of the day from 11 p.m. to 1 a.m; Under the guiding on pinnacle; Along the arcuate surface impact flow water surface, spill and entrained drip, mist and water vapour after upwards flow, get into the heat exchanger surface arrangement space that forms between the inwall by the outer wall of muff and cylindrical housing; And directly and insert the coil pipe heat exchange in the space; Its effect one is that flue gas passes through said process and increased the ability that the area that contacts with water has increased heating evaporation water, the 2nd, suitably reduced the cigarette temperature, and make the flue-gas temperature of contact coil pipe be lower than the burning-point of LNG; Guarantee security of operation, prevent simultaneously to cause thermal stress to damage pipeline because of the inside and outside working medium temperature difference of coil pipe is too high; The 3rd, when wet flue gas is flowed through coil pipe, all undergo phase transition heat exchange inside and outside the pipe and heat-transfer effect is increased greatly.

2. designed the exhaust gas volumn that flue gas recirculation is revolved water with the increase impact air-flow, thereby improved spout place velocity of flue gas, with the dynamics of the intensifying impact water surface.Its working procedure is that the flue gas that produces of burning is under the effect of circulating fan; Flow into the heat exchanger surface arrangement space on the process after the coil pipe heat release, the gas exhaust duct of flowing through again, part of smoke enters atmosphere through chimney; Another part flue gas flows into the chuck layer through register becomes circulating flue gas; The flue gas that produces with burning mixes, and revolves the exhaust gas volumn of water thereby increased impact air-flow, that is has improved cigarette speed.Its effect one is to have strengthened flue gas to impact the ability that spills and entrainment drop, mist and steam, has strengthened the effect of water in the Heating pool because of the surface of contact that has enlarged flue gas and water simultaneously; The 2nd, can control the cigarette temperature through regulating amount of circulating gas, guarantee safety; The 3rd, reclaimed smoke exhaust heat, improved the efficient of heating and gasifying stove; The 4th, when the circulating flue gas that temperature is lower flows, can protect the unlikely overtemperature of wall of firing chamber inner core, the safety of protective gear in the chuck layer.

3. chuck layer and flue gas nozzle between firing chamber inner core and urceolus have been designed, like Fig. 1, shown in 2.The annular pass that forms between firing chamber inner core and urceolus is the chuck layer; Termination cycle flue inlet on the urceolus; Following termination conical nozzle; Fuel combustion produces in circulating flue gas and the firing chamber inner core of chuck layer the high-temperature flue gas of flowing through mixes in conical nozzle and ejects, and forms high speed flue gas jet and is directly injected to the air-flow that is installed under the spout and revolves on water, and the very strong turnup air-flow of power is entrainmented in formation.Its effect one is that the flue gas that circulating flue gas and burning are produced fully mixes and the suitable high speed flue gas jet of formation temperature; The 2nd, formed the passage of the indoor barrel temperature of cooling combustion.

4. heat exchanger surface is designed to upper and lower two groups of coil pipes; Last coil pipe is arranged in the heat exchanger surface arrangement space around the muff arranged that rises in the shape of a spiral; Main heating and the gasification LNG of plaing a part, lower coil pipe is immersed in the pond, mainly the rock gas that gasified of heating; Connect with connecting tube between the coil pipe up and down, can adorn point for measuring temperature on connecting tube.Its effect one is heating evaporation section and the superheat section that has separated clearly in the LNG heating and gasifying process; The heating evaporation section that needs more heat transfer is placed on the high-temperature zone; With the heating of high temperature wet flue gas, and superheat section institute calorific requirement is less, then is placed on to heat in the pond; Thereby improved whole heat-transfer effect, reduced hot area; The 2nd, the natural gas temperature between upper and lower coil pipe changes can effectively reflect the load variations situation, can regulate combustion condition, fuel saving rapidly in view of the above.

Advantage of the present invention is simple and compact for structure, and floor space is little, and initial cost is few, and operating cost is relatively low, and operation maintenance is convenient, and the thermal efficiency is high, and air feed speed is fast, can better satisfy the peak regulation needs, is applicable to the demand of middle-size and small-size vaporizing station to the LNG heating and gasifying.

Description of drawings

Fig. 1 is the general construction layout plan of a kind of mode of execution of a kind of fume impact water-spinning LNG heating and gasifying device of the present invention, and the heating surface of layout has been divided into upper and lower coil pipe;

Fig. 2 is the general construction layout plan of the another kind of mode of execution of a kind of fume impact water-spinning LNG heating and gasifying device of the present invention, and heating surface all is arranged to coil pipe;

Fig. 3 revolves the structural representation of water subassembly for air-flow of the present invention;

Fig. 4 revolves the air-flow schematic representation of water subassembly for high temperature gas flow bump of the present invention;

Fig. 5 revolves the plan view when revolving water subsurface peripheral rounded of water subassembly for air-flow of the present invention;

Fig. 6 revolves the plan view when revolving water subsurface peripheral rectangular of water subassembly for air-flow of the present invention;

Fig. 7 is the schematic representation of the jet core top distance L of spout to spout air-flow.

Among the figure:

The 1st, burner, the 2nd, chuck layer, the 3rd, muff, the 4th, heat exchanger surface arrangement space, the 5th, coil pipe, the 6th, LNG import; The 7th, air-flow revolves water, and 7a is the pinnacle, and 7b is an aperture, and 7c is a curved surface, and the 8th, gas outlet, the 9th, support; The 10th, pond, the 11st, conical nozzle, the 12nd, shell, the 13rd, connecting tube, the 14th, gas exhaust duct; The 15th, the gas exhaust duct register, the 16th, the firing chamber inner core, the 17th, cycle flue, the 18th, cycle flue register, L are the distances on the jet core top of spout to spout air-flow.

Embodiment

Below in conjunction with accompanying drawing further explain structure of the present invention.

A kind of fume impact water-spinning LNG heating and gasifying device, in install combustion chamber, the top of vertical enclosed cylindrical housing 12, the firing chamber is made up of inner core 16 and urceolus 3, the top install combustion device 1 of inner core 16, the lower end of urceolus 3 is a conical nozzle 11; Between the inwall of the outer wall of urceolus 3 and cylindrical housing 12, form heat exchanger surface arrangement space 4, offer gas exhaust duct 14 on the top of heat exchanger surface arrangement space 4; Between muff 3 and inner core 16, constitute chuck layer 2, the top of chuck layer 2 is communicated with cycle flue 17, and bottom outlet is communicated with the conical nozzle 11 of urceolus 3 lower ends; The other end of cycle flue 17 is connected with gas exhaust duct 14, is installed in the register 15 on the gas exhaust duct 14 and is installed in register 18 may command exhaust smoke level and the amount of circulating gas on the cycle flue 17; The bottom of cylindrical housing 12 is the pond 10 of accumulating water; The partially submerged air-flow of being inverted umbrella that is of the water surface in pond 10 revolves water 7; The center that air-flow revolves water 7 is for to the pinnacle of upper process 7a, by pinnacle 7a downwards and to around expansion be the curved surface 7c that slightly is bent upwards again after earlier down to disk border with certain curve shape; In heat exchanger surface arrangement space 4, arranged the coil pipe 5 that rises in the shape of a spiral and arrange around muff 3; One end of coil pipe 5 is LNG import 6, and the other end is a gas outlet 8.

Said coil pipe 5 is divided into coil pipe and lower coil pipe two-part; Last coil pipe is arranged in the heating surface arrangement space 4; Around muff 3 arrangement of rising in the shape of a spiral; Main heating and the gasification LNG of plaing a part, lower coil pipe rises in the shape of a spiral to arrange and is immersed in the pond 10 of cylindrical housing 12 bottoms, mainly the rock gas that gasified of heating; Air-flow revolve water 7 place lower coil pipe above, interconnect by connecting tube 13 between last coil pipe and the lower coil pipe.This arrangement has separated heating evaporation section and the superheat section in the LNG heating and gasifying process clearly, and the heating evaporation section that needs more heat transfer is placed on the high-temperature zone, promptly in the heat exchanger surface arrangement space 4; Heat with the high temperature wet flue gas; The less superheat section of institute's calorific requirement then is placed on low temperature area, and promptly in the pond 10 of cylindrical housing bottom, water heats; Thereby improved whole heat-transfer effect, reduced hot area; And according to the temperature variation of the point for measuring temperature on the connecting tube 13 that is installed between upper and lower coil pipe, can effectively reflect the load variations situation, regulate combustion condition in view of the above, fuel saving.

The lowest part that revolves the curved surface 7c of water 7 at said air-flow is offered some aperture 7b.Water constantly overflows into from aperture 7b to guarantee that the curved surface 7c bottom that air-flow revolves water 7 is immersed in the water all the time; Make and to impact the water that is deposited on the curved surface all the time along curved surface 7c airflow flowing; And not can because of the water on the curved surface 7c by carried away by air movement, can't in time replenish and the situation of lack of water takes place.

Constitute chuck layer 2 between firing chamber inner core 16 and the urceolus 3; The top of chuck layer 2 is communicated with cycle flue 17; Bottom outlet is communicated with the conical nozzle 11 of urceolus 3 lower ends; The flue gas that circulating flue gas and burning are produced fully mixes in conical nozzle 11 has increased flue gas flow, thereby forms high speed flue gas jet; In addition, chuck layer 2 becomes the passage of the outside wall temperature of the indoor tube 16 of cooling combustion, helps protecting and prolonging the life-span of firing chamber inner core 16.

The other end of said cycle flue 17 is connected with gas exhaust duct 14, and the register 15 on the gas exhaust duct 14 can be controlled exhaust smoke level and amount of circulating gas with the register 18 on the cycle flue 17.

Said passage register 15 and 18 can be three kinds of states that whole unlatchings, Close All or part are opened respectively, but the properly collocation of the keying state of two registers.Can control flue gas flow and flow velocity through regulating register, impact the ability that spills water, increase the area that flue gas contacts with water, thereby strengthen the effect of water in the flue gas heating pond 10 to improve flue gas; Can control the cigarette temperature through regulating register, make its burning-point that is lower than LNG with protective gear safety, in addition, the low temperature circulating flue gas can be protected the unlikely overtemperature of the wall of firing chamber inner core 16; The also recyclable smoke exhaust heat of flue gas recirculation improves the device thermal efficiency.

Said spout 11 and air-flow revolve distance between water 7 be spout 11 to spout air-flow jet core top distance L ± 10% in.Through calculating and test, in this distance range, can obtain gas shock performance preferably, thereby form the ability of better impacting, spill, entrainmenting drop, mist and steam.

The plan view profile that the cross section and the air-flow of said firing chamber inner core 16, urceolus 3, spout 11 revolves water 7 should consistently be circular, like present embodiment, perhaps is rectangle.When practical application, should select circle or rectangle for use according to arts demand, all can obtain effect preferably.

The curve that said air-flow revolves the curved surface 7c institute foundation of water 7 is arc curves such as parabola, circular arc, hyperbola; During practical application; Can be according to requirements such as the specification of heating and gasifying device, capacity, gasification temperatures; And device overall structure and processing technology thereof etc., select said different curved surface curve for use.

Said spout 11 ejection airspeeies should be more than the 20m/s.With this jet velocity, air-flow can produce the effect of impacting, spill, entrainmenting drop, mist and steam preferably.

Technological scheme of the present invention experimental verification; Said fume impact water-spinning LNG heating and gasifying device produces 50 cubic metres rock gas with temperature for about-180 ℃ LNG gasifies fast; Only consume 1 cubic metre of fuel natural gas; The temperature of exhaust fume of device is 50-60 ℃, and the thermal efficiency reaches more than 95%, is much better than other heating and gasifying device of existing technology.The present invention is in gas industry, especially in the air feed of middle-size and small-size supply station and peak regulation, has wide practical use.

Claims (8)

1. a flue gas impacts and revolves ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that:

In the install combustion chamber, top of vertical enclosed cylindrical housing (12), the firing chamber is made up of inner core (16) and urceolus (3), the top install combustion device (1) of inner core (16), and the lower end of urceolus (3) is conical nozzle (11); Between the inwall of the outer wall of urceolus (3) and cylindrical housing (12), form heat exchanger surface arrangement space (4), offer gas exhaust duct (14) on the top of heat exchanger surface arrangement space (4);

Between muff (3) and inner core (16), constitute chuck layer (2), the bottom of chuck layer (2) is communicated with conical nozzle (11), and the top of chuck layer (2) is communicated with gas exhaust duct (14) through cycle flue (17);

Gas exhaust duct register (15) is set in gas exhaust duct (14), cycle flue register (18) is set in cycle flue (17);

The bottom of shell (12) is the pond (10) of accumulating water; The partially submerged air-flow of being inverted umbrella that is of the water surface in pond (10) revolves water (7); The center that air-flow revolves water (7) is for to the pinnacle of upper process (7a), by pinnacle (7a) downwards and to around expansion be the curved surface (7c) that slightly is bent upwards again after earlier down to disk border with certain curve shape;

In heat exchanger surface arrangement space (4), arranged the coil pipe (5) that rises in the shape of a spiral and arrange around muff (3); One end of coil pipe (5) is LNG Liquefied natural gas import (6), and the other end is gas outlet (8).

2. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device; It is characterized in that said coil pipe (5) is divided into coil pipe and lower coil pipe two-part; Last coil pipe is around muff (3) arrangement of rising in the shape of a spiral; Lower coil pipe rises in the shape of a spiral to arrange and is immersed in the pond (10) of cylindrical housing (12) bottom, air-flow revolve water (7) be arranged in lower coil pipe above, interconnect by connecting tube (13) between last coil pipe and the lower coil pipe.

3. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that on said air-flow revolves the curved surface (7c) of water (7), offering some apertures (7b).

4. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that said gas exhaust duct register (15) and cycle flue register (18) can be whole unlatchings, Close All or part respectively and open three kinds of states.

5. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that said spout (11) and air-flow revolve distance between the pinnacle (7c) of water be spout (11) to spout air-flow the jet core top apart from (L) ± 10% in.

6. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is circle or rectangle that cross section and the air-flow that it is characterized in that said firing chamber inner core (16), urceolus (3), spout (11) revolves the plan view profile of water (7) consistent.

7. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that the curve that said air-flow revolves the curved surface of water (7) (7c) foundation is parabola, circular arc or hyp arc curve.

8. impact according to the said flue gas of claim 1 and revolve ability of swimming LNG Liquefied natural gas heating and gasifying device, it is characterized in that said spout (11) ejection airspeed is more than 20m/s.

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