CN204877423U - Gasification agent conveyer pipe and underground fuel gasification system thereof - Google Patents
Gasification agent conveyer pipe and underground fuel gasification system thereof Download PDFInfo
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- CN204877423U CN204877423U CN201520462545.4U CN201520462545U CN204877423U CN 204877423 U CN204877423 U CN 204877423U CN 201520462545 U CN201520462545 U CN 201520462545U CN 204877423 U CN204877423 U CN 204877423U
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- gasifying agent
- underground
- gasification
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- 238000002309 gasification Methods 0.000 title claims abstract description 224
- 239000000446 fuel Substances 0.000 title claims abstract description 128
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 247
- 238000005452 bending Methods 0.000 claims abstract description 14
- 239000003245 coal Substances 0.000 claims description 43
- 238000000889 atomisation Methods 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 abstract description 134
- 238000002485 combustion reaction Methods 0.000 abstract description 37
- 238000004519 manufacturing process Methods 0.000 abstract description 21
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 137
- 238000002347 injection Methods 0.000 description 63
- 239000007924 injection Substances 0.000 description 63
- 238000000034 method Methods 0.000 description 45
- 239000010865 sewage Substances 0.000 description 29
- 239000007921 spray Substances 0.000 description 29
- 239000000567 combustion gas Substances 0.000 description 26
- 239000002671 adjuvant Substances 0.000 description 22
- 239000000203 mixture Substances 0.000 description 21
- 238000005507 spraying Methods 0.000 description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 238000000746 purification Methods 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005496 tempering Methods 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 239000003034 coal gas Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000009692 water atomization Methods 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 235000007164 Oryza sativa Nutrition 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 235000009566 rice Nutrition 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004058 oil shale Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Abstract
The utility model discloses a gasification agent conveyer pipe and underground fuel gasification system thereof. The gasification agent conveyer pipe includes water conveyer pipe and letter shoot, water conveyer pipe and letter shoot are put together, the lumen of water conveyer pipe and the lumen mutual isolation of letter shoot are worked as when the sharp state of gasification agent conveyer pipe follow becomes the case of bending or becomes sharp state from the case of bending, the lumen of water conveyer pipe and the lumen of letter shoot are in on -state respectively. Underground fuel gasification system is including underground gasification furnace and preceding the gasification agent conveyer pipe mix the shower nozzle with the atomizing. The utility model discloses do not need the heat just to mix the vaporific gasification agent of formation with water and combustion -supporting gas in the fuel gasification reaction zone underground, realize the normal and stable of secret gasification, greatly reduced manufacturing cost.
Description
Technical field
The utility model relates to a kind of carrier pipe and fuel gasification system thereof, particularly relates to a kind of gasifying agent carrier pipe and underground fuel gasification system thereof.
Background technology
According to Chinese coal field geology general bureau (1999) statistics, China buried depth 2000m amounts to 45521.04 hundred million tons with shallow coal resources.Wherein: buried depth 1000m is 18440.48 hundred million tons with shallow coal resources, wherein reliable level 9169.10 hundred million tons, accounts for 40.5% of prediction total amount; Buried depth 1000-1500m's is 13403.75 hundred million tons, wherein reliable level 6676.91 hundred million tons, accounts for 29.4% of prediction total amount; Buried depth 1500-2000m's is 13676.81 hundred million tons, and wherein reliable level 3292.29 hundred million tons, accounts for 30.1%.Deep resource (1000m is with dark) accounts for 59.5% of coal resources in China reserves, and wherein major part is distributed in Xinjiang and Inner Mongolia Autonomous Region.Deepen coal resource is owing to being subject to the impact of the factors such as gentle bump, and production technique, safety, economy are difficult to ensure.Utilize coal underground gasification technology can realize the exploitation of deepen coal resource, the exploitation for deepen coal resource is utilized and starts a new approach.
Underground coal gasification(UCG) is the Energy Conversion Technology that a kind of high-efficiency cleaning utilizes low-quality coal resources, exactly the coal being in underground is directly controlledly burnt, by producing the process of fuel gas to the heat effect of coal (oil or oil rock layer) and chemical action.
Underground coal gasification(UCG) fuel bed can not move, but the movement of gasification face will be relied on and keep the continuous of gasification, simultaneously, solid coal higher for carbon containing to be changed into hydrogeneous high gaseous energy, normally add steam, but coal seam, below hundred meters, underground even km, is condensed into water again after under surface water steam arrival point, be difficult to participate in gasification reaction; Containing a large amount of steam in underground gasification furnace outlet coal gas, after the condensation of ground, become pollutant effluents, also can produce a large amount of pollutant effluents when the extracting process of underground gasification burned out area simultaneously.
Prior art: U.S. CRIP(ControlledRetractionInjectionPoint) technique, see Fig. 1.In this technique, producing well is straight well, Injection Well is be communicated with the directional well of producing well, once after the Path Setup between well gets up, the gasifying agent of high-temperature steam shape is directly delivered to gasification face by single pass gasifying agent carrier pipe, is injected into the horizontal segment place of well end in coal seam and starts to carry out gasification reaction, (confirmed by gas composition measuring instrument) after the coal combustion near reaction chamber is used up, decanting point is just retracted, and new gasification reaction district just forms (now needing again to light a fire) again.By the method, just can realize controlling gas injection point and move backward along with the retrogressing of gasification face.
In prior art, owing to water must be heated into high-temperature water vapor (temperature is higher than 100 degrees Celsius), again high-temperature water vapor and oxygen mix are generated the gasifying agent of high-temperature steam shape, then, the gasifying agent of high-temperature steam shape is transported to underground from ground and carries out gasification reaction production synthesis gas, so, need to consume a large amount of heat energy, also consume very large external pressure simultaneously and by the gasifying agent of high-temperature steam shape press-in underground, cost of production can be considerably increased.Due to gasification furnace in coal seam subterranean coal gasification reaction district distance 300 meters, earth's surface with dark place, the conveying of any gasifying agent must by the buried pipeline in stratum, but pipeline is in stratum, Insulation cannot be implemented to pipeline, and pipeline is in the stroke extending into coal seam, also need through some aquifers, so the temperature difference between the tube wall of pipeline and the gasifying agent of high-temperature steam shape is very big.Comprehensive above-mentioned reason, the gasifying agent of high-temperature steam shape through Flows in the process in subterranean coal gasification reaction district, will inevitably the heat of large losses, these heats are diffused into stratum by tube wall and slattern in vain.Therefore, when the gasifying agent of high-temperature steam shape arrives coal seam gasification reaction zone by the air inlet port of gasification furnace, after the gasifying agent heat radiation of wherein a part of high-temperature steam shape, temperature becomes water lower than 10 degrees Celsius and from the isolated oxygen of water, lose the function of the gasifying agent of high-temperature steam shape, when this part aqueous water coal seam gasification reaction zone by coal combustion reheat become gasifying agent to participate in gasification reaction again with combination with oxygen time, coal seam gasification reaction zone will consume a large amount of energy, like this, gasification face temperature can be caused to reduce and gasification reaction speed is reduced.
CRIP technique of the prior art, the moment of setting up new coal seam gasification reaction zone owing to retreating gas injection point is determined after the coal seam after-flame of coal seam gasification reaction zone (gas composition only recorded according to gas composition measuring instrument and content confirm), often retreat gas injection point to set up new coal seam gasification reaction zone and all will rekindle coal seam in new coal seam gasification reaction zone, the process of igniting has accounted for time of quite long production combustion gas, greatly reduces the efficiency of combustion-gas jet test.Being retreated by the admission line of coal seam gasification reaction zone is not the process of continous-stable, but long distance (more than 20 meters), control procedure and index indefinite.
In prior art, directly gasification furnace is passed into without any process to the large amount of sewage of coal gas condensation, certain negative effect will be produced to gasification furnace, affect normal combustion and the gasification of gasification furnace, gasification furnace time serious, will be caused to extinguish.
Utility model content
First technical problem to be solved in the utility model is to provide a kind of underground fuel gasification process, the method need not consume external pressure just can be transported to underground fuel gasification reaction district by water, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
Second technical problem to be solved in the utility model is to provide a kind of gasifying agent carrier pipe, this gasifying agent carrier pipe need not consume external pressure just can be transported to underground fuel gasification reaction district by water, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
3rd technical problem to be solved in the utility model is to provide a kind of underground fuel gasification system, this system need not consume external pressure just can be transported to underground fuel gasification reaction district by water, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
With regard to method, in order to solve the problems of the technologies described above, underground fuel gasification process of the present utility model is, water and combustion-supporting gas are transported to underground fuel gasification reaction district respectively continuously, the pressure potential of water between ground to underground is utilized to be atomized by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent, vaporific gasifying agent carries out gasification reaction generating gas with underground fuel by combustion heating in underground fuel gasification reaction district, the combustion gas generated is discharged.
The water being transported to underground fuel gasification reaction district is water purification or sewage or by water purification and the mixed water of sewage.Described sewage is through the condensed water of condensation, the ground sewage produced in construction, gas purification and the sewage of combustion vacancy reason generation, non-Drinking Water and/or natural precipitation after combustion gas is discharged, described natural precipitation is rainwater and snow-broth, described sewage is purified water after purified treatment, described in purify waste water and be transported to underground fuel gasification reaction district.Described purified treatment is undertaken by the mode of settlement of sewage and/or filtration.
With the temperature of the Gas Components of discharging and gasification reaction zone for index, the time of adjustment gas-water ratio and gasification reaction zone injection point backing and speed, realize retreating continuously and cycle gasification, thus realize underground gasification process continuously and stable.
Underground fuel gasification process of the present utility model compared with prior art has following beneficial effect.
1, water and combustion-supporting gas are transported to underground fuel gasification reaction district owing to have employed by the technical program respectively continuously, the pressure potential of water between ground to underground is utilized to be atomized by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent, vaporific gasifying agent carries out gasification reaction generating gas with underground fuel by combustion heating in underground fuel gasification reaction district, by the technological means that the combustion gas generated is discharged, so external pressure need not be consumed just water can be transported to underground fuel gasification reaction district, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
2, the technical program is water purification or sewage or the technological means by water purification and the mixed water of sewage owing to have employed the water being transported to underground fuel gasification reaction district, so, not only can turn waste into wealth, save a large amount of water resources, and, be conducive to protection of the environment.After purified treatment, water is purified again owing to have employed described sewage, described purifying waste water is transported to the technological means in underground fuel gasification reaction district, so, greatly can reduce the negative effect that gasification furnace is produced, do not affect normal combustion and the gasification of gasification furnace, avoid gasification furnace to extinguish.Also the technological means of being undertaken by the mode of settlement of sewage and/or filtration owing to have employed described purified treatment, so, greatly can reduce cost sewage being carried out to purified treatment.
3, the technical program due to the temperature that have employed the Gas Components of discharging and gasification reaction zone be index, the time of adjustment gas-water ratio and gasification reaction zone injection point backing and the technological means of speed, so, fuel in fuel gasification reaction zone whether after-flame not only can be descended definitely according to the Gas Components of discharging, and, whether the fuel can also judged in underground fuel gasification reaction district according to the temperature in gasification reaction district is still burning, like this, during the fast after-flame of the fuel in underground fuel gasification reaction district and under being still in fired state, without relight process, gas injection point can be realized retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
With regard to carrier pipe, in order to solve above-mentioned second technical problem, gasifying agent carrier pipe of the present utility model comprises water carrier pipe and letter shoot, described water carrier pipe and letter shoot are combined, the tube chamber of described water carrier pipe and the tube chamber of letter shoot mutually isolated, when described gasifying agent carrier pipe becomes case of bending from linear state or becomes linear state from case of bending, the described tube chamber of water carrier pipe and the tube chamber of letter shoot are in conducting state respectively.
Described letter shoot is positioned at described water carrier pipe or described water carrier pipe is positioned at described letter shoot; Or, described letter shoot and described water carrier pipe parallel join; Or, be provided with the axial dividing plate of continuous print in described gasifying agent carrier pipe, the inner chamber of described gasifying agent carrier pipe is divided into two sub-inner chambers by described axial dividing plate, wherein, a described sub-inner chamber forms described water carrier pipe inner chamber, and described in another, sub-inner chamber forms the inner chamber of described letter shoot.
The inner chamber compartment of terrain of described water carrier pipe is provided with support frame; And/or the inner chamber compartment of terrain of described letter shoot is provided with support frame.
The port of export of gasifying agent carrier pipe is provided with atomization hybrid nozzle; Described atomization hybrid nozzle is anti-backfire atomization hybrid nozzle, described anti-backfire atomization hybrid nozzle is provided with mixed gas head, described mixed gas head is front end is hemispheric Cylinder Shell, and the front end of mixed gas head is distributed with multiple nozzle, is also provided with thermocouple hole in the front end of mixed gas head; The rear end of mixed gas head connects a front end of merely hitting connecting leg, the center of described middle connecting leg is provided with combustion adjuvant spray orifice, the rear end of described combustion adjuvant spray orifice extends back and forms combustion adjuvant adapter, middle connecting leg is provided with multiple axis around described combustion adjuvant spray orifice and is atomized spray orifice, middle connecting leg is also provided with thermocouple through hole vertically, the external diameter of middle connecting leg is provided with the external spraying conical surface, and the point diameter of the described external spraying conical surface is greater than rear end diameter; The rear end of middle connecting leg connects the front end of a Water injection tube, the inner chamber of described Water injection tube is atomized spray orifice with the described axis of middle connecting leg, thermocouple through hole is communicated with, the front end of Water injection tube is provided with the inner cone corresponding with the described external spraying conical surface of middle connecting leg, gap of spraying is provided with between the inner cone and the external spraying conical surface of middle connecting leg of described Water injection tube, form gap nozzle, Water injection tube is provided with the radial direction being communicated with described gap nozzle and Water injection tube inner chamber and is atomized spray orifice; Combustion adjuvant adapter is through the inner chamber of Water injection tube; Anti-backfire atomization hybrid nozzle is also provided with port threeway, described port threeway is provided with connected entrance, water inlet, helps combustion gas interface, described connected entrance is communicated with Water injection tube, the described air inlet port helping combustion gas interface to pass described combustion-supporting gas adapter, described air inlet port is communicated with the gas outlet of described letter shoot, and described water inlet is connected with the delivery port of described water carrier pipe; Be provided with thermocouple at the described thermocouple hole of mixed gas head, the wire of described thermocouple is drawn from the combustion gas interface that helps of port threeway through the described thermocouple through hole of middle connecting leg, the inner chamber of Water injection tube.
Gasifying agent carrier pipe of the present utility model compared with prior art has following beneficial effect.
1, the technical program comprises water carrier pipe and letter shoot owing to have employed gasifying agent carrier pipe, described water carrier pipe and letter shoot are combined, the tube chamber of described water carrier pipe and the tube chamber of letter shoot mutually isolated, when described gasifying agent carrier pipe becomes case of bending from linear state or becomes linear state from case of bending, the tube chamber of described water carrier pipe and the tube chamber of letter shoot are in the technological means of conducting state respectively, so, external pressure need not be consumed and just water can be transported to underground fuel gasification reaction district, simultaneously, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, just water and combustion-supporting gas can be mixed to form for not needing heat below the condition that vaporific gasifying agent provides necessity in underground fuel gasification reaction district, and then realize the normal and stable of underground gasification process, greatly reduce cost of production.
2, the technical program is owing to have employed described letter shoot and be positioned at described water carrier pipe or described water carrier pipe being positioned at described letter shoot; Or, described letter shoot and described water carrier pipe parallel join; Or, the axial dividing plate of continuous print is provided with in described gasifying agent carrier pipe, the inner chamber of described gasifying agent carrier pipe is divided into two sub-inner chambers by described axial dividing plate, wherein, a described sub-inner chamber forms described water carrier pipe inner chamber, described in another, sub-inner chamber forms the technological means of the inner chamber of described letter shoot, so, multiple gasifying agent carrier pipe can be produced according to the different demands of client.
3, the technical program is provided with support frame due to the inner chamber compartment of terrain that have employed described water carrier pipe; And/or, the inner chamber compartment of terrain of described letter shoot is provided with the technological means of support frame, so, effectively the inner chamber of anti-sealing carrier pipe and the inner chamber of letter shoot can close the path blocking water and combustion-supporting gas when being in case of bending, meanwhile, the winding of gasifying agent carrier pipe is not hindered yet.
4, the technical program due to the port of export that have employed gasifying agent carrier pipe be provided with atomization hybrid nozzle technological means, so, the pressure potential of water between ground to underground can be utilized to be atomized by atomization hybrid nozzle by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent.Again owing to have employed the technological means that described atomization hybrid nozzle is anti-backfire atomization hybrid nozzle, so, in gasification reaction process, can prevent the gas-flow generated from causing tempering to the burning of gasification furnace air inlet side.Also be provided with mixed gas head owing to have employed described anti-backfire atomization hybrid nozzle, described mixed gas head is front end is hemispheric Cylinder Shell, and the front end of mixed gas head is distributed with multiple nozzle, is also provided with thermocouple hole in the front end of mixed gas head, the rear end of mixed gas head connects a front end of merely hitting connecting leg, the center of described middle connecting leg is provided with combustion adjuvant spray orifice, the rear end of described combustion adjuvant spray orifice extends back and forms combustion adjuvant adapter, middle connecting leg is provided with multiple axis around described combustion adjuvant spray orifice and is atomized spray orifice, middle connecting leg is also provided with thermocouple through hole vertically, the external diameter of middle connecting leg is provided with the external spraying conical surface, and the point diameter of the described external spraying conical surface is greater than rear end diameter, the rear end of middle connecting leg connects the front end of a Water injection tube, the inner chamber of described Water injection tube is atomized spray orifice with the described axis of middle connecting leg, thermocouple through hole is communicated with, the front end of Water injection tube is provided with the inner cone corresponding with the described external spraying conical surface of middle connecting leg, gap of spraying is provided with between the inner cone and the external spraying conical surface of middle connecting leg of described Water injection tube, form gap nozzle, Water injection tube is provided with the radial direction being communicated with described gap nozzle and Water injection tube inner chamber and is atomized spray orifice, combustion adjuvant adapter is through the inner chamber of Water injection tube, anti-backfire atomization hybrid nozzle is also provided with port threeway, described port threeway is provided with connected entrance, water inlet, helps combustion gas interface, described connected entrance is communicated with Water injection tube, the described air inlet port helping combustion gas interface to pass described combustion-supporting gas adapter, described air inlet port is communicated with the gas outlet of described letter shoot, and described water inlet is connected with the delivery port of described water carrier pipe, at the described thermocouple hole of mixed gas head, thermocouple is installed, the wire of described thermocouple passes the described thermocouple through hole of middle connecting leg, the inner chamber of Water injection tube is from the technological means helping combustion gas interface to draw of port threeway, so, not only can prevent the generation of tempering phenomenon, but also the temperature in underground fuel gasification reaction district can be detected in real time, can fuel in underground fuel gasification reaction district fast after-flame time and under being still in fired state, without relight process, realize gas injection point to retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
With regard to system, in order to solve above-mentioned 3rd technical problem, underground fuel gasification system of the present utility model, comprise underground gasification furnace, described underground gasification furnace has the furnace chamber being arranged in coal seam, be communicated with this furnace chamber and lead to the air inlet on ground, be communicated with this furnace chamber and the venthole leading to ground and the gasifying agent carrier pipe that can stretch to retreating from this air inlet in this furnace chamber, described gasifying agent carrier pipe is foregoing gasifying agent carrier pipe, described atomization hybrid nozzle is arranged in described furnace chamber, in described gasifying agent carrier pipe, the water inlet of water carrier pipe is communicated with water source, in described gasifying agent carrier pipe, the air inlet port of letter shoot is communicated with combustion-supporting source of the gas, described venthole is communicated with the air inlet port of moisture separator.
The outlet of sewer of described moisture separator is communicated with the wastewater inlet of detention tank, and the treated water outlet of described detention tank is communicated with the water inlet of frequency conversion foul water pump, and the delivery port of described frequency conversion foul water pump is communicated with the water inlet of described water carrier pipe.
The gas outlet of described moisture separator is communicated with the air inlet port of gas composition measuring instrument, the rear portion of described gasifying agent carrier pipe is reeled by carrier pipe roll device, underground is sent into by carrier pipe drive unit and preventer in the front portion of described gasifying agent carrier pipe, the hydraulic interface of described carrier pipe roll device is communicated with by oil circuit with the hydraulic interface of the first hydraulic cylinder in Hydraulic Station, the hydraulic interface of described carrier pipe drive unit is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, the hydraulic interface of described preventer is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, three described hydraulic cylinders are controlled respectively by three control valves, the control signal input of three described control valves is electrically connected respectively with three control signal outputs of controller, the signal output part of described gas composition measuring instrument is electrically connected with the signal input part of described controller, the signal output part of described thermocouple is electrically connected with the signal input part of described controller.
Underground fuel gasification system of the present utility model compared with prior art has following beneficial effect.
1, the technical program is foregoing gasifying agent carrier pipe owing to have employed described gasifying agent carrier pipe, described atomization hybrid nozzle is arranged in described furnace chamber, in described gasifying agent carrier pipe, the water inlet of water carrier pipe is communicated with water source, the technological means that in described gasifying agent carrier pipe, the air inlet port of letter shoot is communicated with combustion-supporting source of the gas, so, external pressure need not be consumed and just water can be transported to underground fuel gasification reaction district, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
2, the technical program is communicated with the wastewater inlet of detention tank due to the outlet of sewer that have employed described moisture separator, the treated water outlet of described detention tank is communicated with the water inlet of frequency conversion foul water pump, the delivery port of described frequency conversion foul water pump is communicated with the technological means of the water inlet of described water carrier pipe, so, not only can turn waste into wealth, save a large amount of water resources, and, be conducive to protection of the environment, simultaneously, greatly can reduce the negative effect that gasification furnace is produced, do not affect normal combustion and the gasification of gasification furnace, gasification furnace is avoided to extinguish, greatly can reduce cost sewage being carried out to purified treatment.
3, the technical program is communicated with the air inlet port of gas composition measuring instrument due to the gas outlet that have employed described moisture separator, the rear portion of described gasifying agent carrier pipe is reeled by carrier pipe roll device, underground is sent into by carrier pipe drive unit and preventer in the front portion of described gasifying agent carrier pipe, the hydraulic interface of described carrier pipe roll device is communicated with by oil circuit with the hydraulic interface of the first hydraulic cylinder in Hydraulic Station, the hydraulic interface of described carrier pipe drive unit is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, the hydraulic interface of described preventer is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, three described hydraulic cylinders are controlled respectively by three control valves, the control signal input of three described control valves is electrically connected respectively with three control signal outputs of controller, the signal output part of described gas composition measuring instrument is electrically connected with the signal input part of described controller, the technological means that the signal output part of described thermocouple is electrically connected with the signal input part of described controller, so, fuel in fuel gasification reaction zone whether after-flame not only can be descended definitely according to the Gas Components of discharging, and, whether the fuel can also judged in underground fuel gasification reaction district according to the temperature in gasification reaction district is still burning, like this, during the fast after-flame of the fuel in underground fuel gasification reaction district and under being still in fired state, without relight process, gas injection point can be realized retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, lower fuel vaporizing method of the present utility model, gasifying agent carrier pipe and system thereof are described in further detail.
Fig. 1 is U.S. CRIP process structure schematic diagram in prior art.
Fig. 2 is the schematic flow sheet of the utility model underground fuel gasification process.
Fig. 3 is the cross-sectional structure schematic diagram of the first gasifying agent carrier pipe of the utility model.
Fig. 4 is the sectional structure schematic diagram of A-A line in Fig. 3.
Fig. 5 is the cross-sectional structure schematic diagram of the utility model the second gasifying agent carrier pipe.
Fig. 6 is the cross-sectional structure schematic diagram of the third gasifying agent carrier pipe of the utility model.
Fig. 7 is the structural representation of anti-backfire atomization hybrid nozzle in the utility model.
Fig. 8 is the structural representation of the utility model underground fuel gasification system.
Fig. 9 is the principle schematic that water and combustion-supporting gas form gasifying agent of the present utility model in gasification zone.
Figure 10 is the syndeton schematic diagram of control system in the utility model.
In figure, mark is described as follows.
1 ~ coal seam;
2 ~ underground gasification furnace;
2-1 ~ furnace chamber;
2-2 ~ air inlet;
2-3 ~ venthole;
2-4 ~ underground gasification reaction zone;
2-5 ~ air collecting chamber;
3 ~ aqueous vapor is separated carrier pipe;
3-1 ~ water carrier pipe;
3-2 ~ letter shoot;
3-3 ~ support frame;
3-4 ~ axial dividing plate;
4 ~ anti-backfire atomization hybrid nozzle;
4-1 ~ mixed gas head;
4-2 ~ gondola water faucet nozzle;
4-3 ~ thermocouple;
4-4 ~ middle connecting leg;
4-5 ~ combustion adjuvant spray orifice;
4-6 ~ axis is atomized spray orifice;
4-7 ~ Water injection tube;
4-8 ~ radial direction atomization spray orifice;
4-9 ~ gap nozzle;
4-10 ~ water inlet;
4-11 ~ air inlet port;
4-12 ~ combustion adjuvant adapter;
4-13 ~ port threeway;
5 ~ carrier pipe drive unit;
5-1 ~ preventer;
6 ~ gathering sill;
7 ~ carrier pipe roll device;
8 ~ aqueous vapor separating and feeding device;
9 ~ water inlet;
10 ~ air inlet port;
11 ~ Hydraulic Station;
11-1 ~ hydraulic cylinder;
11-2 ~ control valve;
12 ~ moisture separator;
13 ~ detention tank;
13-1 ~ filter;
14 ~ frequency conversion foul water pump;
15 ~ gas composition measuring instrument;
16 ~ flow meter;
17 ~ pressure meter;
18 ~ controller.
Detailed description of the invention
As shown in Fig. 8 to Fig. 9, present embodiments provide for a kind of underground fuel gasification process, water and combustion-supporting gas are transported to underground fuel gasification reaction district respectively continuously, the pressure potential of water between ground to underground is utilized to be atomized by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent, vaporific gasifying agent carries out gasification reaction generating gas with underground fuel by combustion heating in underground fuel gasification reaction district, the combustion gas generated is discharged.
Preferred as one, described water before being transported to underground fuel gasification reaction district its temperature between 50 degrees centigrade to 100 degrees Celsius.Gasification efficiency can be improved like this.
As further preferred, described water passed through solar energy heating before being transported to underground fuel gasification reaction district.Like this, not only clean environment firendly, and also energy cost is cheap.
Water and combustion-supporting gas are transported to underground fuel gasification reaction district owing to have employed by present embodiment respectively continuously, the pressure potential of water between ground to underground is utilized to be atomized by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent, vaporific gasifying agent carries out gasification reaction generating gas with underground fuel by combustion heating in underground fuel gasification reaction district, by the technological means that the combustion gas generated is discharged, so external pressure need not be consumed just water can be transported to underground fuel gasification reaction district, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
Kind as present embodiment is improved, and as shown in Figure 8, the water being transported to underground fuel gasification reaction district can be water purification or sewage, non-Drinking Water, also can be by water purification and the mixed water of sewage.Described sewage manages through the condensed water of condensation, the ground sewage produced in construction, gas purification and combustion vacancy the sewage produced after combustion gas is discharged, also can be natural precipitation, described natural precipitation is rainwater and snow-broth, described sewage is purified water after purified treatment, described in purify waste water and be transported to underground fuel gasification reaction district.Described purified treatment can be undertaken by the mode of settlement of sewage, also can be to be undertaken by the mode of sewage water filtration, can also be undertaken by the mode of settlement of sewage and filtration.
Present embodiment is water purification or sewage or the technological means by water purification and the mixed water of sewage owing to have employed the water being transported to underground fuel gasification reaction district, so, not only can turn waste into wealth, save a large amount of water resources, and, be conducive to protection of the environment.After purified treatment, water is purified again owing to have employed described sewage, described purifying waste water is transported to the technological means in underground fuel gasification reaction district, so, greatly can reduce the negative effect that gasification furnace is produced, do not affect normal combustion and the gasification of gasification furnace, avoid gasification furnace to extinguish.Also the technological means of being undertaken by the mode of settlement of sewage and/or filtration owing to have employed described purified treatment, so, greatly can reduce cost sewage being carried out to purified treatment.
Further improve as present embodiment, as shown in figs, with discharge Gas Components and gasification reaction zone temperature for index, the time of adjustment gas-water ratio and gasification reaction zone injection point backing and speed, realize retreating continuously and cycle gasification, thus realize the continuous and stable of underground gasification process.
After repeatedly circulating, gasification reaction district injection point backing, to when entering coal point, stops gas injection, only injects water, utilizes the waste heat in gasification reaction district to decompose steam, recycle-water coal gas while reduction gasification reaction district temperature, further the raising gasification thermal efficiency.
Before gasification reaction carries out, first pyrophoric gas and combustion-supporting gas phase are transported to underground fuel gasification reaction district isolator, then make pyrophoric gas and combustion-supporting gas mixed combustion, light the fuel in underground fuel gasification reaction district.
Described combustion-supporting gas is oxygen enrichment and/or pure oxygen and/or air, and described underground fuel is low-calorie coal seam, oil reservoir or oil shale layer in being.
By water respectively radially with axial atomization, radial steam sprays to the borehole wall or rib, prevents coal seam tempering burning, and axial steam and oxygen enrichment or pure oxygen as gasifying agent, spray to gasification reaction district after underground mixes.
Particularly, as shown in Figure 2, double-jacket tube is separated the shower nozzle original position distance set air cavity 1-10 rice in directional horizontal wells controlling injection point backing-water atomization plant, first the air in inert gas replacement inner sleeve is used, then inject pyrophoric gas by inner sleeve, in internal and external casing annular space, inject air, pyrophoric gas to meet the coal-fired layer of burning point at hybrid nozzle and air, adjust air mass flow excess enthalpy coefficient between 1.5-2, as available gas (H in outlet gas composition
2+ CO+CH
4) reach 25%, nozzle temperature is when reaching coal seam ignition point, stop injecting pyrophoric gas, with the pyrophoric gas in inert gas replacement inner sleeve, switch to and inject oxygen enrichment or oxygen, switch to injection water in internal and external casing annular space, enter normal gasifying stage.
Oxygen enrichment or oxygen flow is regulated to reach design production value, detect outlet gas composition, when in gas composition, hydrogen content is greater than 30%, continue to inject oxygen enrichment or oxygen, when hydrogen content in gas composition be less than 30%, CO content be greater than 10% time, start water pump water filling, improve water injection rate gradually, control the volume ratio of tolerance and the water yield at below 500:1.
When gas-water ratio is close to 500:1, detect outlet gas composition and nozzle temperature continuously, as the available gas (H of outlet gas composition
2+ CO+CH
4) when being greater than 45%, continue to maintain gas-water ratio gasification; As the available gas (H of outlet gas composition
2+ CO+CH
4) when being less than 45%, when nozzle temperature is greater than 200 degree, start injection point backing operation.
As the available gas (H of outlet gas composition
2+ CO+CH
4) when being less than 45%, when nozzle temperature is greater than 200 degree, provide control signal, primer fluid pressing system, opens blowout prevention box, the double-jacket tube of injection head traction simultaneously water atomization plant, gas injection point is retreated continuously, and dial rotation, packs up double-jacket tube.
Controlling to retreat displacement is coal seam thickness at 0.5 meter to L rice (L=(1-3) H, H, rice), when nozzle temperature is close to ground temperature, stop injection head and dial movement, close blowout prevention box, stop injecting water simultaneously, realize once moving and circulating.
With same control flow, through repeatedly circulation after, when shower nozzle move to directional hole enter coal point time, stop gas injection, inject water, utilize waste heat and the overbottom pressure of gasification furnace, decompose steam, while reduction furnace temperature, recycle-water coal gas, improves the gasification thermal efficiency further.
Under water filling condition, gasification furnace export coal tolerance is less than 100m
3during/h, stop water filling, gasification terminates.Propose double-jacket tube and be separated control injection point backing-water atomization plant.
Present embodiment due to the temperature that have employed the Gas Components of discharging and gasification reaction zone be index, the time of adjustment gas-water ratio and gasification reaction zone injection point backing and the technological means of speed, so, fuel in fuel gasification reaction zone whether after-flame not only can be descended definitely according to the Gas Components of discharging, and, whether the fuel can also judged in underground fuel gasification reaction district according to the temperature in gasification reaction district is still burning, like this, during the fast after-flame of the fuel in underground fuel gasification reaction district and under being still in fired state, without relight process, gas injection point can be realized retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
As shown in Fig. 3 to 6, a kind of gasifying agent carrier pipe 3, comprise water carrier pipe 3-1 and letter shoot 3-2, described water carrier pipe 3-1 and letter shoot 3-2 combines, tube chamber and the letter shoot 3-2 tube chamber of described water carrier pipe 3-1 are mutually isolated, when described gasifying agent carrier pipe becomes case of bending from linear state or becomes linear state from case of bending, tube chamber and the letter shoot 3-2 tube chamber of described water carrier pipe 3-1 are in conducting state respectively.
Present embodiment comprises water carrier pipe and letter shoot owing to have employed gasifying agent carrier pipe, described water carrier pipe and letter shoot are combined, the tube chamber of described water carrier pipe and the tube chamber of letter shoot mutually isolated, when described gasifying agent carrier pipe becomes case of bending from linear state or becomes linear state from case of bending, the tube chamber of described water carrier pipe and the tube chamber of letter shoot are in the technological means of conducting state respectively, so, external pressure need not be consumed and just water can be transported to underground fuel gasification reaction district, simultaneously, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, just water and combustion-supporting gas can be mixed to form for not needing heat below the condition that vaporific gasifying agent provides necessity in underground fuel gasification reaction district, and then realize the normal and stable of underground gasification process, greatly reduce cost of production.
One as present embodiment is improved, and as shown in Figure 3 to Figure 4, described letter shoot 3-2 is positioned at described water carrier pipe 3-1, certainly, also can be that described water carrier pipe 3-1 is positioned at described letter shoot 3-2.Can also be as shown in Figure 3, described letter shoot 3-2 and described water carrier pipe 3-1 parallel join; Can be more as shown in Figure 4, the axial dividing plate 3-4 of continuous print is provided with in described gasifying agent carrier pipe 3, the inner chamber of described gasifying agent carrier pipe 3 is divided into two sub-inner chambers by described axial dividing plate, wherein, a described sub-inner chamber forms described water carrier pipe 3-1 inner chamber, and sub-inner chamber described in another forms the inner chamber of described letter shoot 3-2.
Preferred as one, as shown in Figure 3 to Figure 4, the shape of described water carrier pipe 3-1 cross section is rounded, and also can be ellipse, may also be as shown in FIG. 5 and 6, the shape of described water carrier pipe 3-1 cross section be rectangular or square.In like manner, as described in Fig. 3 to Fig. 5, the shape of letter shoot 3-2 cross section is rounded, also can be oval.May also be as shown in FIG. 5 and 6, the shape of described letter shoot 3-2 cross section is rectangular or square.Obviously, can also be that the shape of described water carrier pipe 3-1 cross section is rounded, the shape of described letter shoot 3-2 cross section is in square, can also be that the shape of described water carrier pipe 3-1 cross section is in square, and the shape of described letter shoot 3-2 cross section is rounded.Similar combination is a variety of in addition.
Present embodiment is owing to have employed described letter shoot and be positioned at described water carrier pipe or described water carrier pipe being positioned at described letter shoot; Or, described letter shoot and described water carrier pipe parallel join; Or, the axial dividing plate of continuous print is provided with in described gasifying agent carrier pipe, the inner chamber of described gasifying agent carrier pipe is divided into two sub-inner chambers by described axial dividing plate, wherein, a described sub-inner chamber forms described water carrier pipe inner chamber, described in another, sub-inner chamber forms the technological means of the inner chamber of described letter shoot, so, multiple gasifying agent carrier pipe can be produced according to the different demands of client.
Further improve as present embodiment, as shown in Figures 3 to 6, the inner chamber compartment of terrain of described water carrier pipe 3-1 is provided with support frame 3-3.The inner chamber compartment of terrain of described letter shoot 3-1 is provided with support frame 3-3.
Present embodiment is provided with support frame due to the inner chamber compartment of terrain that have employed described water carrier pipe; And/or, the inner chamber compartment of terrain of described letter shoot is provided with the technological means of support frame, so, effectively the inner chamber of anti-sealing carrier pipe and the inner chamber of letter shoot can close the path blocking water and combustion-supporting gas when being in case of bending, meanwhile, the winding of gasifying agent carrier pipe is not hindered yet.
Further improve as present embodiment, as shown in Fig. 3 to Fig. 9, the port of export of gasifying agent carrier pipe 3 is provided with atomization hybrid nozzle 4.Described atomization hybrid nozzle 4 is anti-backfire atomization hybrid nozzles 4, described anti-backfire atomization hybrid nozzle 4 is provided with mixed gas head 4-1, described mixed gas head 4-1 is front end is hemispheric Cylinder Shell, the front end of mixed gas head 4-1 is distributed with multiple nozzle 4-2, is also provided with thermocouple hole in the front end of mixed gas head 4-1; The rear end of mixed gas head 4-1 connects a front end of merely hitting connecting leg 4-4, the center of described middle connecting leg 4-4 is provided with combustion adjuvant spray orifice 4-5, the rear end of described combustion adjuvant spray orifice 4-5 extends back and forms combustion adjuvant adapter 4-12, middle connecting leg 4-4 is provided with multiple axially atomization spray orifice 4-6 around described combustion adjuvant spray orifice 4-5, middle connecting leg 4-4 is also provided with thermocouple through hole vertically, the external diameter of middle connecting leg 4-4 is provided with the external spraying conical surface, and the point diameter of the described external spraying conical surface is greater than rear end diameter; The rear end of middle connecting leg 4-4 connects the front end of a Water injection tube 4-7, the inner chamber of described Water injection tube 4-7 is axially atomized spray orifice 4-6 with the described of middle connecting leg 4-4, thermocouple through hole is communicated with, the front end of Water injection tube 4-7 is provided with the inner cone corresponding with the described external spraying conical surface of middle connecting leg 4-4, gap of spraying is provided with between the inner cone and the external spraying conical surface of middle connecting leg 4-4 of described Water injection tube 4-7, form gap nozzle 4-9, Water injection tube 4-7 is provided with the radial direction being communicated with described gap nozzle 4-9 and Water injection tube 4-7 inner chamber and is atomized spray orifice 4-8; Combustion adjuvant adapter 4-12 is through the inner chamber of Water injection tube 4-7; Anti-backfire atomization hybrid nozzle 4 is also provided with port threeway 4-13, described port threeway 4-13 is provided with connected entrance, water inlet 4-10, helps combustion gas interface, described connected entrance is communicated with Water injection tube, the described air inlet port 4-11 helping combustion gas interface to pass described combustion-supporting gas adapter 4-12, described air inlet port 4-11 is communicated with the gas outlet of described letter shoot 3-2, and described water inlet 4-10 is connected with the delivery port of described water carrier pipe 3-1; Be provided with thermocouple 4-3 at the described thermocouple hole of mixed gas head 4-1, the wire 61 of described thermocouple 4-3 is drawn from the combustion gas interface that helps of port threeway 4-13 through the described thermocouple through hole of middle connecting leg 4-4, the inner chamber of Water injection tube 4-7.
Present embodiment due to the port of export that have employed gasifying agent carrier pipe be provided with atomization hybrid nozzle technological means, so, the pressure potential of water between ground to underground can be utilized to be atomized by atomization hybrid nozzle by the water be transported in underground fuel gasification reaction district, the steam generated after atomization and the combustion-supporting gas be transported in underground fuel gasification reaction district are mixed to form vaporific gasifying agent.Again owing to have employed the technological means that described atomization hybrid nozzle is anti-backfire atomization hybrid nozzle; so; in gasification reaction process, can prevent the gas-flow generated from causing tempering to the burning of gasification furnace air inlet side, play the effect of protection anti-backfire atomization hybrid nozzle.Also be provided with mixed gas head owing to have employed described anti-backfire atomization hybrid nozzle, described mixed gas head is front end is hemispheric Cylinder Shell, and the front end of mixed gas head is distributed with multiple nozzle, is also provided with thermocouple hole in the front end of mixed gas head, the rear end of mixed gas head connects a front end of merely hitting connecting leg, the center of described middle connecting leg is provided with combustion adjuvant spray orifice, the rear end of described combustion adjuvant spray orifice extends back and forms combustion adjuvant adapter, middle connecting leg is provided with multiple axis around described combustion adjuvant spray orifice and is atomized spray orifice, middle connecting leg is also provided with thermocouple through hole vertically, the external diameter of middle connecting leg is provided with the external spraying conical surface, and the point diameter of the described external spraying conical surface is greater than rear end diameter, the rear end of middle connecting leg connects the front end of a Water injection tube, the inner chamber of described Water injection tube is atomized spray orifice with the described axis of middle connecting leg, thermocouple through hole is communicated with, the front end of Water injection tube is provided with the inner cone corresponding with the described external spraying conical surface of middle connecting leg, gap of spraying is provided with between the inner cone and the external spraying conical surface of middle connecting leg of described Water injection tube, form gap nozzle, Water injection tube is provided with the radial direction being communicated with described gap nozzle and Water injection tube inner chamber and is atomized spray orifice, combustion adjuvant adapter is through the inner chamber of Water injection tube, anti-backfire atomization hybrid nozzle is also provided with port threeway, described port threeway is provided with connected entrance, water inlet, helps combustion gas interface, described connected entrance is communicated with Water injection tube, the described air inlet port helping combustion gas interface to pass described combustion-supporting gas adapter, described air inlet port is communicated with the gas outlet of described letter shoot, and described water inlet is connected with the delivery port of described water carrier pipe, at the described thermocouple hole of mixed gas head, thermocouple is installed, the wire of described thermocouple passes the described thermocouple through hole of middle connecting leg, the inner chamber of Water injection tube is from the technological means helping combustion gas interface to draw of port threeway, so, not only can prevent the generation of tempering phenomenon, but also the temperature in underground fuel gasification reaction district can be detected in real time, can fuel in underground fuel gasification reaction district fast after-flame time and under being still in fired state, without relight process, realize gas injection point to retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
As shown in Figures 1 to 9, a kind of underground fuel gasification system, comprise underground gasification furnace 2, described underground gasification furnace 2 has the furnace chamber 2-1 being arranged in coal seam 1, be communicated with this furnace chamber 2-1 and lead to the air inlet 2-2 on ground, be communicated with this furnace chamber 2-1 and lead to the venthole 2-3 on ground and the gasifying agent carrier pipe in this furnace chamber 2-1 can be stretched to retreating from this air inlet 2-2, described gasifying agent carrier pipe is foregoing gasifying agent carrier pipe 3, described atomization hybrid nozzle 4 is arranged in described furnace chamber 2-1, the front being positioned at atomization hybrid nozzle 4 in furnace chamber 2-1 is underground fuel gasification reaction district 2-4, in described gasifying agent carrier pipe 3, the water inlet of water carrier pipe 3-1 is communicated with water source, in described gasifying agent carrier pipe 3, the air inlet port of letter shoot 3-2 is communicated with combustion-supporting source of the gas, described venthole 2-3 is communicated with the air inlet port of moisture separator 12.
Present embodiment is foregoing gasifying agent carrier pipe owing to have employed described gasifying agent carrier pipe, described atomization hybrid nozzle is arranged in described furnace chamber, in described gasifying agent carrier pipe, the water inlet of water carrier pipe is communicated with water source, the technological means that in described gasifying agent carrier pipe, the air inlet port of letter shoot is communicated with combustion-supporting source of the gas, so, external pressure need not be consumed and just water can be transported to underground fuel gasification reaction district, only consume a small amount of external pressure and just combustion-supporting gas can be transported to underground fuel gasification reaction district, do not need heat just in underground fuel gasification reaction district, water and combustion-supporting gas can be mixed to form vaporific gasifying agent, realize the normal and stable of underground gasification process, greatly reduce cost of production.
One as present embodiment is improved, as shown in Figure 8, the outlet of sewer of described moisture separator 12 is communicated with the wastewater inlet of detention tank 13, the treated water outlet of described detention tank 13 is communicated with the water inlet of frequency conversion foul water pump 14, the delivery port of described frequency conversion foul water pump 14 is communicated with the water inlet of described water carrier pipe 3-1, is configured with pressure meter 17 and flowmeter 16 between the delivery port of described frequency conversion foul water pump 14 and the water inlet of described water carrier pipe 3-1.
Preferred as one, as shown in Figure 8, described detention tank 13 is provided with filter 13-1, and described filter 13-1 is between the wastewater inlet and the treated water outlet of described detention tank 13 of described detention tank 13.
Present embodiment is communicated with the wastewater inlet of detention tank due to the outlet of sewer that have employed described moisture separator, the treated water outlet of described detention tank is communicated with the water inlet of frequency conversion foul water pump, the delivery port of described frequency conversion foul water pump is communicated with the technological means of the water inlet of described water carrier pipe, so, not only can turn waste into wealth, save a large amount of water resources, and, be conducive to protection of the environment, simultaneously, greatly can reduce the negative effect that gasification furnace is produced, do not affect normal combustion and the gasification of gasification furnace, gasification furnace is avoided to extinguish, greatly can reduce cost sewage being carried out to purified treatment.
One as present embodiment is improved, as shown in figs, the gas outlet of moisture separator 12 is communicated with the air inlet port of gas composition measuring instrument 15, the rear portion of described gasifying agent carrier pipe 3 is reeled by carrier pipe roll device 7, underground is sent into by carrier pipe drive unit 5 and preventer 5-1 in the front portion of described gasifying agent carrier pipe 3, the hydraulic interface of described carrier pipe roll device 7 is communicated with by oil circuit with the hydraulic interface of the first hydraulic cylinder 11-1 in Hydraulic Station 11, the hydraulic interface of described carrier pipe drive unit 5 is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder 11-1 in Hydraulic Station 11, the hydraulic interface of described preventer 5-1 is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder 11-1 in Hydraulic Station 11, three described hydraulic cylinder 11-1 are controlled respectively by three control valve 11-2, the control signal input of three described control valve 11-1 is electrically connected respectively with three control signal outputs of controller 18, the signal output part of described gas composition measuring instrument 15 is electrically connected with the signal input part of described controller 18, the signal output part of described thermocouple 4-3 is electrically connected with the signal input part of described controller 18.
The entrance point of described gasifying agent carrier pipe 3 is arranged on central part on carrier pipe roll device 7 reel that rest on the ground, the rear portion of described gasifying agent carrier pipe 3 is wound on the reel of described carrier pipe roll device 7, described carrier pipe roll device 7 is provided with aqueous vapor separating and feeding device 8, the delivery port of described aqueous vapor separating and feeding device 8 is communicated with described water carrier pipe 3-1 water inlet, the gas outlet of described aqueous vapor separating and feeding device 8 is communicated with the air inlet port of described letter shoot 3-2, the air inlet port 4-11 of described aqueous vapor separating and feeding device 8 is communicated with combustion-supporting source of the gas, the water inlet 4-10 of described aqueous vapor separating and feeding device 8 is communicated with water source, the top of described air inlet 2-2 is disposed with gathering sill 6 from top to bottom, preventer 5-1, carrier pipe drive unit 5, the front portion of described carrier pipe roll device 7 is through described gathering sill 6, under the driving of described carrier pipe drive unit 5, through described preventer 5-1, extend into successively in described air inlet 2-2 and described furnace chamber 2-1.
As shown in Figure 9, described gasification furnace have one or more directional well (i.e. air inlet 2-2) and two or more go out gas well (i.e. venthole 2-3), going out gas well can be peupendicular hole, also can be deviated directional drilling.Utilize two or more go out the method for gas well fracturing or destructive distillation, form air collecting chamber 2-5.Double-jacket tube is set in directional well and is separated control injection point backing-water atomization plant.
Present embodiment is communicated with the air inlet port of gas composition measuring instrument due to the gas outlet that have employed described moisture separator, the rear portion of described gasifying agent carrier pipe is reeled by carrier pipe roll device, underground is sent into by carrier pipe drive unit and preventer in the front portion of described gasifying agent carrier pipe, the hydraulic interface of described carrier pipe roll device is communicated with by oil circuit with the hydraulic interface of the first hydraulic cylinder in Hydraulic Station, the hydraulic interface of described carrier pipe drive unit is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, the hydraulic interface of described preventer is communicated with by oil circuit with the hydraulic interface of the second hydraulic cylinder in Hydraulic Station, three described hydraulic cylinders are controlled respectively by three control valves, the control signal input of three described control valves is electrically connected respectively with three control signal outputs of controller, the signal output part of described gas composition measuring instrument is electrically connected with the signal input part of described controller, the technological means that the signal output part of described thermocouple is electrically connected with the signal input part of described controller, so, fuel in fuel gasification reaction zone whether after-flame not only can be descended definitely according to the Gas Components of discharging, and, whether the fuel can also judged in underground fuel gasification reaction district according to the temperature in gasification reaction district is still burning, like this, during the fast after-flame of the fuel in underground fuel gasification reaction district and under being still in fired state, without relight process, gas injection point can be realized retreat continuously and continuous gasification, thus realize the continuous and stable of underground gasification process, improving under the fuel availability prerequisite in underground fuel gasification reaction district, improve the production efficiency of combustion gas.
Claims (4)
1. a gasifying agent carrier pipe (3), it is characterized in that: described gasifying agent carrier pipe (3) comprises water carrier pipe (3-1) and letter shoot (3-2), described water carrier pipe (3-1) and letter shoot (3-2) are combined, tube chamber and letter shoot (3-2) tube chamber of described water carrier pipe (3-1) are mutually isolated, when described gasifying agent carrier pipe becomes case of bending from linear state or becomes linear state from case of bending, tube chamber and letter shoot (3-2) tube chamber of described water carrier pipe (3-1) are in conducting state respectively.
2. gasifying agent carrier pipe (3) according to claim 1, is characterized in that:
Described letter shoot (3-2) is positioned at described water carrier pipe (3-1) or described water carrier pipe (3-1) is positioned at described letter shoot (3-2); Or,
Described letter shoot (3-2) and described water carrier pipe (3-1) parallel join; Or,
The axial dividing plate (3-4) of continuous print is provided with in described gasifying agent carrier pipe (3), the inner chamber of described gasifying agent carrier pipe (3) is divided into two sub-inner chambers by described axial dividing plate, wherein, a described sub-inner chamber forms described water carrier pipe (3-1) inner chamber, and described in another, sub-inner chamber forms the inner chamber of described letter shoot (3-2).
3. gasifying agent carrier pipe (3) according to claim 1, is characterized in that: the inner chamber compartment of terrain of described water carrier pipe (3-1) is provided with support frame (3-3); And/or the inner chamber compartment of terrain of described letter shoot (3-1) is provided with support frame (3-3).
4. a underground fuel gasification system, comprise underground gasification furnace (2), described underground gasification furnace (2) has the furnace chamber (2-1) being arranged in coal seam (1), be communicated with this furnace chamber (2-1) and lead to the air inlet (2-2) on ground, be communicated with this furnace chamber (2-1) and lead to the venthole (2-3) on ground and the gasifying agent carrier pipe in this furnace chamber (2-1) can be stretched to retreating from this air inlet (2-2), it is characterized in that: described gasifying agent carrier pipe is the gasifying agent carrier pipe (3) as described in one of claim 1-3, atomization hybrid nozzle (4) is provided with in described furnace chamber (2-1), in described gasifying agent carrier pipe (3), the water inlet of water carrier pipe (3-1) is communicated with water source, in described gasifying agent carrier pipe (3), the air inlet port of letter shoot (3-2) is communicated with combustion-supporting source of the gas, described venthole (2-3) is communicated with the air inlet port of moisture separator (12).
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| CN201520462545.4U CN204877423U (en) | 2015-07-01 | 2015-07-01 | Gasification agent conveyer pipe and underground fuel gasification system thereof |
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| CN104895545A (en) * | 2015-07-01 | 2015-09-09 | 中国矿业大学(北京) | Underground fuel gasification method, gasifying agent delivery pipe and underground fuel gasification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895545A (en) * | 2015-07-01 | 2015-09-09 | 中国矿业大学(北京) | Underground fuel gasification method, gasifying agent delivery pipe and underground fuel gasification system |
| CN108518211A (en) * | 2018-03-29 | 2018-09-11 | 中为(上海)能源技术有限公司 | Oxidant mixed injection system and operating method for coal underground gasifying technology |
| CN108518211B (en) * | 2018-03-29 | 2024-01-30 | 中为(上海)能源技术有限公司 | Oxidant mixed injection system for underground coal gasification process and operation method |
| CN108729916A (en) * | 2018-07-17 | 2018-11-02 | 国氢能源科技有限公司 | A kind of underground gasification furnace coal seam igniter and retrogressing repeat igniting gasification method |
| CN111527939A (en) * | 2020-05-25 | 2020-08-14 | 国网浙江省电力有限公司湖州供电公司 | Greenhouse planting big-arch shelter production factor automatic regulating system |
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