CN203383803U - Gas injection point retreating type coal underground gasification system - Google Patents
Gas injection point retreating type coal underground gasification system Download PDFInfo
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- CN203383803U CN203383803U CN201320357581.5U CN201320357581U CN203383803U CN 203383803 U CN203383803 U CN 203383803U CN 201320357581 U CN201320357581 U CN 201320357581U CN 203383803 U CN203383803 U CN 203383803U
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Abstract
The utility model discloses a gas injection point retreating type coal underground gasification system which comprises an air course arranged in a coal bed and a plurality of coal underground gasification units. The air course is connected with the plurality of coal underground gasification units. The system can effectively prevent slurry from blocking a gas injection point, the coal bed can be exploited to the largest extent, safe coal retreating in the underground gasification process is achieved, the possibility of leakage of a gasifying agent into a burning dead zone is completely removed, filling of the burning dead zone is achieved, ground surface collapse caused by gasification is removed, stability of the gasification channel structure is ensured, the problem of gasifying agent short circuit caused by a gasification channel and a channel formed in the way that an earlier-stage gasifying area coal bed layer plate collapses during the later underground gasification period is solved, product coal gas quality is improved, coal gas production is safe and reliable, and the gasification rate is high.
Description
Technical field
The utility model relates to the underground coal gasification(UCG) production field, particularly a kind of injection point backing formula underground coal gasification system.
Background technology
Owing to there being a large amount of a large amount of that manually can't exploit or uneconomic coal resources of man-made recovery, people start to carry out the research of coal gasification technology very early, the Chinese patent of publication number CN1298058A " a kind of underground gasification furnace of producing coal gas in mine ", its structure lacks the gas injection of air injection pipe in coal seam and controls, therefore exist coal combustion insufficient, the deficiency that the coal utilization rate is low; The Chinese patent of publication number CN1112188A " gasifying method for coal seam " adopts the fusing method molten existing injection point backing of air injection pipe cause for gossip of opening piecemeal; Consequently gas can also, along obsolete air injection pipe to the coal seam gas injection of having burnt, bring unsafe hidden danger to production; The Chinese patent of publication number CN1169501A " coal-bed gasifying method of gas-injection point backing while changing tube " is to put into many appendixs to realize injection point backing in production tunnel, coal seam, and this kind of method complex process cost is high; Also have the Chinese patent " long-passage and large-section underground coal gasification in mine " of publication number CN 1169501A, the Chinese patent " coal-bed gasifying method of gas-injection point backing while changing tube " of publication number CN 1121138A, the Chinese patent " multi-pour-gathering channel alternating moving bed longwall coal seam gasification method " of publication number CN 1172842A etc., all the research that has the shaft underground gasification technology to carry out to foundation, but above-mentioned patent is disclosed, be all to be based upon a kind of " U " shape or " mountain " shape mine and gasifying process thereof, and built coal gasification systems does not allow that personnel are with regard near operation; Carried out the field trial of Coal Gasification many times both at home and abroad, but the time of operation is not long, do not realize normal underground coal gasification(UCG) production, the technical problem underlying run into be can't be stable the control gasification, the one, gasifying agent wantonly flows in gasification tunnel, the all ribs in gasification tunnel both sides all are exposed in air, burning block on rib rapidly against the wind and on, cause shorten gas-making period, the gasification of coal quantitative change is few, mobile air catalytic combustion in the part coal gas that gasification produces simultaneously and passage, make to export gas quality and degenerate, and rate of gasification is low; The 2nd, do not have good way to be filled the combustion dead zone, cause surface subsidence, simultaneously, the mass air flow in gasification tunnel directly passes through from slump, and does not contact unburned coal seam, gasification tunnel both sides, makes the underground gasification process worsen, and gasification efficiency is low.For the Chinese patent that addresses the above problem publication number CN101315026A discloses " a kind of underground coal gasification system and production technology thereof ".This system utilizes the method for slip casting to carry out landfill to the passage burnt, cutting off gasifying agent continues to the passage air feed burnt, but this system and method exists slip casting backflow impact to supply gas continuously in practice, and the problem of slip casting obstruction, although this system adopts divider wall to isolate air supply channel and main tunnel, the explosive potential safety hazard that refluxes and produce to solve imflammable gas, but actual effect is that imflammable gas is filled in air supply channel, still to bring the danger of passage blast.
Summary of the invention
The purpose of this utility model is for the problems referred to above, and a kind of injection point backing formula underground coal gasification system proposed.By increase recharging of slip casting surge tank and one-way cock solution slip casting in air supply system, by inject continuously high steam in slip casting, solve the problem that slip casting is stopped up.
The technical solution of the utility model is achieved in that to achieve these goals
A kind of injection point backing formula underground coal gasification system comprises and is arranged on Zhong airway, coal seam and a plurality of underground coal gasification(UCG)s unit that airway connects a plurality of underground coal gasification(UCG)s unit; Wherein, the gasifying agent that the underground coal gasification(UCG) unit is included in a plane layout injects tunnel and two coal gas conveying tunnels, described two coal gas carry tunnel to be set in parallel in gasifying agent injection both sides, tunnel according to gasifying agent, injecting the channel spacing certain distance, article two, the end that coal gas carries tunnel one end and gasifying agent to inject tunnel is interconnected by initial gasification tunnel, and two coal gas carry the tunnel other end and gasifying agent to inject the other end in tunnel by divider wall and airway isolation; Be provided with the starting point flame range in the initial gasification tunnel of described gasifying agent injection tunnel and gasification connectivity part both sides, tunnel; Be equipped with gasifying agent house steward, water vapour house steward and slip casting house steward in described airway, described coal gas carries tunnel to be communicated with the ground gas station, and the facility arranged in gasifying agent injection tunnel includes gasifying agent carrier pipe and a plurality of water vapour and slurries and mixes the conveying arm; Gasifying agent carrier pipe and a plurality of water vapour and slurries mix carries arm through fire dam, by the gasifying agent delivery controller, with water vapour, with the slip casting dispensing controller, with gasifying agent house steward, water vapour house steward and slip casting house steward, be connected respectively, axially be disposed with a plurality of gas injection ports along the gasifying agent carrier pipe, gas injection port is connected with the air injection pipe that stretches into coal seam, stretches at gas injection port on the air injection pipe in coal seam and is provided with the hot melten type opening device; Be provided with between two adjacent gas injection ports and imbed the slip casting surge tank that gasifying agent injects the tunnel underground, the internal diameter of described slip casting surge tank at least is greater than three times of described gasifying agent internal diameter of delivery hose, be respectively arranged with the gas injection import and the gas injection outlet that are connected with adjacent gas injection port on the slip casting surge tank, described gas injection outlet is arranged on the sidewall of slip casting surge tank, described gas injection import is arranged on slip casting surge tank upper surface, and a plurality of gas injection ports are connected in series mutually by gas injection import and the gas injection outlet of slip casting surge tank; The gas injection outlet opposite of described slip casting surge tank sidewall is provided with water vapour and grouting port, described water vapour mixes and carries arm to be connected with water vapour and slurries with grouting port, be provided with unidirectional stop valve in the pipeline be connected with the gas injection port of gasifying agent carrier pipe in described slip casting surge tank gas injection import, described unidirectional stop valve is according to being channel setting along the gas injection flow direction; Be provided with temperature pick up in coal seam between adjacent gas injection port, a controller is connected with temperature pick up, hot melten type opening device, gasifying agent delivery controller, water vapour and slip casting dispensing controller respectively, and described gasifying agent injects tunnel and fill full coal cinder after arranging above-mentioned facility.
Further, it is between 15 meters to 50 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance to scheme.
Further, it is 30 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance to scheme.
Further, the upper surface gas injection import of described slip casting surge tank is to being arranged with extension for scheme, and the import of extension is lower than the gas injection outlet of slip casting surge tank sidewall.
Further, described temperature pick up is arranged in the coal seam at front two meters of gasifying agent carrier pipe gas injection port scheme.
Scheme further, is arranged on the described slip casting surge tank between two adjacent gas injection ports of gasifying agent carrier pipe, and it is between 2 meters to 2.5 meters that its distance is carried out the distance of gas direction gas injection port.
Scheme is further, described hot melten type opening device comprises: upper and lower two pipelines, upper and lower two device for cleaning pipelines are crossed flange and are linked together, wherein, lower pipeline is connected with the gas injection port of gasifying agent carrier pipe, and upper pipeline stretches into coal seam, be provided with low temperature fusing pad between upper and lower pipeline flanges, low temperature fusing pad cuts off the passage of upper and lower two pipelines, on low temperature fuses pad, is fixed with heating wire, the input lead of heating wire from the flange bottom of pipe side draw.
The utility model is compared with prior art:
1. realize fixed point injection controlled the retreating of gasifying agent, can improve stability and the reliability of underground gasification process;
2. between slip casting surge tank and gas injection point, unidirectional stop valve is set, the backflow of slurries in the time of can preventing slip casting, cause the obstruction of gas injection point; Simultaneously, after the one way valve stop valve is set, the carrying out that the slip casting process can be safer, can carry out filling to the gasification combustion dead zone of front end more fully; 3. reliably realized firing the filling of dead zone, made gasifying agent fully and the coal seam haptoreaction do not gasified, prevented that the runoff of gasifying agent in the combustion dead zone from directly entering gas passage and causing the quality decline of coal gas and the danger of blast;
4. the grouting pipe on the slip casting surge tank is again the water vapour flow in pipes in gasification simultaneously, has save the investment of water vapour pipeline, has also reduced the project installation difficulty in underworkings simultaneously, has improved the injection reliability of gasifying agent and water vapour; 5. gasifying agent injects arm the fuse metal opening device is installed, and can ground closes a floodgate and realizes the unlatching of gasifying agent decanting point, has improved the safety that gasification is produced;
6. on the slip casting surge tank, grouting pipe can be connected to the ground well head, without the enforcement slip casting of manually going into the well, has improved the safety that gasification is produced;
7. coal is filled in gasifying agent injection tunnel, and the coal gas back-mixing of stopping the gasification generation enters gasifying agent injection tunnel and contacts and blast with oxygen residual in tunnel or that leak;
8. can reliably implement the filling to gasification combustion dead zone, the ground surface of having eliminated due to gasifying subsides, and has guaranteed the stable of gasification tunnel structure;
9. solved the underground gasification later stage, because gasification tunnel and the regional coal-seam plate slump of gasifying early stage form the problem of the gasifying agent short circuit that passage causes, improved the quality of product coal gas, Gas Production is safe and reliable, and rate of gasification is high.
Below in conjunction with drawings and Examples, the utility model is described in detail.
The accompanying drawing explanation
Fig. 1 is the utility model underground gasification system schematic;
Fig. 2 is gasification unit structural representation of the utility model;
Fig. 3 is in service schematic diagram of gasification unit structure of the utility model;
Fig. 4 is the utility model hot melten type opening device structural representation.
The specific embodiment
A kind of underground coal gasification system embodiment, referring to Fig. 1 to Fig. 4, described system comprises and is arranged on Zhong airway, coal seam 1 and a plurality of underground coal gasification(UCG)s unit 2, airway connects a plurality of underground coal gasification(UCG)s unit; Wherein, the gasifying agent that the underground coal gasification(UCG) unit is included in a plane layout injects tunnel 2-1 and two coal gas conveying tunnel 2-2, described two coal gas carry tunnel to be set in parallel in gasifying agent injection both sides, tunnel according to gasifying agent, injecting the channel spacing certain distance, article two, the end that coal gas carries tunnel and gasifying agent to inject tunnel is interconnected by initial gasification tunnel 2-3, and two coal gas carry tunnel and gasifying agent to inject the other end in tunnel by divider wall 2-4 and airway isolation; Described gasifying agent injects tunnel and gasification connectivity part both sides, tunnel and initially gasifies in tunnel and be provided with starting point flame range 2-5; Be equipped with gasifying agent house steward 3, water vapour house steward and slip casting house steward 4 in described airway, described coal gas carries tunnel to be communicated with the ground gas station by pipeline 5, and the facility arranged in gasifying agent injection tunnel includes gasifying agent carrier pipe 6 and a plurality of water vapour and slurries and mixes conveying arm 7; Gasifying agent carrier pipe and a plurality of water vapour and slurries mix carries arm through fire dam, by gasifying agent delivery controller 8, with water vapour, with slip casting dispensing controller 9, with gasifying agent house steward, water vapour house steward and slip casting house steward, be connected respectively, axially be disposed with a plurality of gas injection ports 10 along the gasifying agent carrier pipe, gas injection port is connected with the air injection pipe 11 that stretches into coal seam, stretches at gas injection port on the air injection pipe in coal seam and is provided with hot melten type opening device 12; Be provided with the slip casting surge tank 13 of imbedding under gasifying agent injection ground, tunnel 2-1-1 between two adjacent gas injection ports, the internal diameter of described slip casting surge tank at least is greater than three times of described gasifying agent internal diameter of delivery hose, be respectively arranged with the gas injection import 13-1 and the gas injection outlet 13-2 that are connected with adjacent gas injection port on the slip casting surge tank, described gas injection outlet is arranged on the sidewall of slip casting surge tank, described gas injection import is arranged on slip casting surge tank upper surface, and a plurality of gas injection ports are connected in series mutually by the slip casting surge tank; The gas injection outlet opposite of described slip casting surge tank sidewall is provided with water vapour and grouting port 13-3, described water vapour mixes and carries arm to be connected with water vapour and slurries with grouting port, be provided with unidirectional stop valve 14 in the pipeline be connected with gas injection port in described slip casting surge tank gas injection import, described unidirectional stop valve is according to being channel setting along the gas injection flow direction; Be provided with temperature pick up 15 in coal seam between adjacent gas injection port, a controller is connected with the slip casting dispensing controller with temperature pick up, hot melten type pipe valve device, gasifying agent delivery controller, water vapour respectively, and described gasifying agent injects tunnel and fill full coal cinder after arranging above-mentioned facility.
In embodiment, it is between 15 meters to 50 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance.
In embodiment, it is 30 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance.
In embodiment, the upper surface gas injection import of described slip casting surge tank is to being arranged with extension 13-4, and the import of extension is lower than the gas injection outlet of slip casting surge tank sidewall.
In embodiment, described temperature pick up is arranged in the coal seam at front two meters of gasifying agent carrier pipe gas injection port.
In embodiment, be arranged on the described slip casting surge tank between two adjacent gas injection ports of gasifying agent carrier pipe, it is between 2 meters to 2.5 meters that its distance is carried out the distance of gas direction gas injection port.
In embodiment, described hot melten type opening device comprises: upper and lower two pipeline 11-1 and 11-2, upper and lower two device for cleaning pipelines cross flange 11-1-1 and 11-2-1 links together, wherein, lower pipeline is connected with the gas injection port of gasifying agent carrier pipe, upper pipeline stretches into coal seam, be provided with low temperature fusing pad 16 between upper and lower pipeline flanges, low temperature fusing pad cuts off the passage of upper and lower two pipelines, be fixed with heating wire 17 on low temperature fusing pad, the input lead 18 of heating wire from the flange bottom of pipe side draw.
In embodiment, the open and close of gas injection point be take Fig. 3 as example: the unlatching of gas injection point realizes by the hot melt opening device, and closing by the slip casting surge tank of gas injection point realizes.
The unlatching gas injection point 3 of take is closed the open and close program of gas injection point 2 as example explanation gas injection point:
1, original state: slip casting surge tank 13(1) complete slip casting, gas injection point 1 is closed condition; Fusible metal dish in the hot melt opening device of gas injection point 2 is in opening (being that metal dish is opened by molten), and the metal dish in the hot melt opening device of all the other gas injection points of gas injection point 3, gas injection point 4 and rear end is complete closed condition.Slip casting surge tank 13(2), slip casting surge tank 13(3) and remaining slip casting surge tank of rear end all in slip casting state not, the gasifying agent that gasification is produced put 2 injections by gas injection;
2, the existing needs implemented retreating of gasifying agent gas injection point, closes gas injection point 2, opens gas injection point 3;
3, at first, switching coal gas flow process, all enter the outlet coal gas of gasification face to diffuse torch to drain into atmosphere;
4, gasifying agent is adjusted into to whole air Injections, and keep the injection rate of air stable (such as: 3500 Nm
3/ hour), and record the gasifying agent injection pressure (such as: 80kPa);
5, open the power supply of the hot melt opening device of gas injection point 3, start to melt the fusible metal dish of gas injection point 3; Observe injection flow and the injection pressure of gasifying agent, when injecting that flow significantly raises and injection pressure while significantly reducing, show that the fusible metal disc portion is molten to open;
6, Close All injects air, and guarantees that the power supply of the hot melt opening device of gas injection point 3 is on-state always, lasting after 15 minutes, then the injection of opening air, and so far, gas injection point 3 has been realized unlatching;
7, the injection rate of readjusting air to stable state (such as 3500 Nm
3/ hour), and record the gasifying agent injection pressure (such as: 50kPa);
8, record and continue to observe the content of water in the change of component, particularly coal gas of coal gas;
9, guarantee that the gasification face draining is unimpeded;
10, the emissions status of torch outlet coal gas is diffused in monitoring, main change color of observing discharge gas;
11, by Grouting Pipe to slip casting surge tank 13(2) inject slurries (proportioning of slurries is (quality): flyash (95%), lime (5%), water (water be flyash, lime total amount 20%)), grouting pressure is 1.0MPa to the maximum;
12, when injection pressure significantly raises, show that slurries have entered slip casting surge tank 13(2 when injecting that flow significantly reduces), downstream line and gasification combustion dead zone;
13, continue slip casting, and pay close attention to gasification face draining, diffuse color and the moisture in coal gas that torch works off one's feeling vent one's spleen and change; Water content in coal gas significantly raises suddenly or diffuses color that torch works off one's feeling vent one's spleen while bleaching (showing to have a large amount of water vapours to discharge), stops immediately slip casting;
14, so far, realized retreat (opened gas injection point 3, closed gas injection point 2) of gasifying agent gas injection point, gasification zone continues to advance backward; Simultaneously, also realized the part filling of gasification combustion dead zone.
Claims (7)
1. an injection point backing formula underground coal gasification system, comprise and be arranged on Zhong airway, coal seam and a plurality of underground coal gasification(UCG)s unit, and airway connects a plurality of underground coal gasification(UCG)s unit; It is characterized in that, the gasifying agent that the underground coal gasification(UCG) unit is included in a plane layout injects tunnel and two coal gas conveying tunnels, described two coal gas carry tunnel to be set in parallel in gasifying agent injection both sides, tunnel according to gasifying agent, injecting the channel spacing certain distance, article two, the end that coal gas carries tunnel one end and gasifying agent to inject tunnel is interconnected by initial gasification tunnel, and two coal gas carry the tunnel other end and gasifying agent to inject the other end in tunnel by divider wall and airway isolation; Be provided with the starting point flame range in the initial gasification tunnel of described gasifying agent injection tunnel and gasification connectivity part both sides, tunnel; Be equipped with gasifying agent house steward, water vapour house steward and slip casting house steward in described airway, described coal gas carries tunnel to be communicated with the ground gas station, and the facility arranged in gasifying agent injection tunnel includes gasifying agent carrier pipe and a plurality of water vapour and slurries and mixes the conveying arm; Gasifying agent carrier pipe and a plurality of water vapour and slurries mix carries arm through fire dam, by the gasifying agent delivery controller, with water vapour, with the slip casting dispensing controller, with gasifying agent house steward, water vapour house steward and slip casting house steward, be connected respectively, axially be disposed with a plurality of gas injection ports along the gasifying agent carrier pipe, gas injection port is connected with the air injection pipe that stretches into coal seam, stretches at gas injection port on the air injection pipe in coal seam and is provided with the hot melten type opening device; Be provided with between two adjacent gas injection ports and imbed the slip casting surge tank that gasifying agent injects the tunnel underground, the internal diameter of described slip casting surge tank at least is greater than three times of described gasifying agent internal diameter of delivery hose, be respectively arranged with the gas injection import and the gas injection outlet that are connected with adjacent gas injection port on the slip casting surge tank, described gas injection outlet is arranged on the sidewall of slip casting surge tank, described gas injection import is arranged on slip casting surge tank upper surface, and a plurality of gas injection ports are connected in series mutually by gas injection import and the gas injection outlet of slip casting surge tank; The gas injection outlet opposite of described slip casting surge tank sidewall is provided with water vapour and grouting port, described water vapour mixes and carries arm to be connected with water vapour and slurries with grouting port, be provided with unidirectional stop valve in the pipeline be connected with the gas injection port of gasifying agent carrier pipe in described slip casting surge tank gas injection import, described unidirectional stop valve is according to being channel setting along the gas injection flow direction; Be provided with temperature pick up in coal seam between adjacent gas injection port, a controller is connected with temperature pick up, hot melten type opening device, gasifying agent delivery controller, water vapour and slip casting dispensing controller respectively, and described gasifying agent injects tunnel and fill full coal cinder after arranging above-mentioned facility.
2. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, it is between 15 meters to 50 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance.
3. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, it is 30 meters that described coal gas carries tunnel and gasifying agent to inject the channel spacing distance.
4. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, the upper surface gas injection import of described slip casting surge tank is to being arranged with extension, and the import of extension is lower than the gas injection outlet of slip casting surge tank sidewall.
5. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, described temperature pick up is arranged in the coal seam at front two meters of gasifying agent carrier pipe gas injection port.
6. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, be arranged on the described slip casting surge tank between two adjacent gas injection ports of gasifying agent carrier pipe, it is between 2 meters to 2.5 meters that its distance is carried out the distance of gas direction gas injection port.
7. a kind of injection point backing formula underground coal gasification(UCG) according to claim 1 is, it is characterized in that, described hot melten type opening device comprises: upper and lower two pipelines, upper and lower two device for cleaning pipelines are crossed flange and are linked together, wherein, lower pipeline is connected with the gas injection port of gasifying agent carrier pipe, upper pipeline stretches into coal seam, be provided with low temperature fusing pad between upper and lower pipeline flanges, low temperature fusing pad cuts off the passage of upper and lower two pipelines, be fixed with heating wire on low temperature fusing pad, the input lead of heating wire from the flange bottom of pipe side draw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320357581.5U CN203383803U (en) | 2013-06-21 | 2013-06-21 | Gas injection point retreating type coal underground gasification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320357581.5U CN203383803U (en) | 2013-06-21 | 2013-06-21 | Gas injection point retreating type coal underground gasification system |
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| Publication Number | Publication Date |
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| CN203383803U true CN203383803U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320357581.5U Withdrawn - After Issue CN203383803U (en) | 2013-06-21 | 2013-06-21 | Gas injection point retreating type coal underground gasification system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277082A (en) * | 2013-06-21 | 2013-09-04 | 北京中矿科能煤炭地下气化技术研究中心 | Gas injection point retreating type coal underground gasification system and process |
| CN104564011A (en) * | 2015-02-11 | 2015-04-29 | 新奥气化采煤有限公司 | Underground gasification method |
| CN106089177A (en) * | 2016-08-18 | 2016-11-09 | 中国矿业大学(北京) | A kind of high-efficiency coal underground gasification furnace and construction method thereof |
| CN107387055A (en) * | 2017-09-18 | 2017-11-24 | 山东科技大学 | A kind of mobile gas injection device and method suitable for underground coal gasification(UCG) |
| CN107939370A (en) * | 2017-12-11 | 2018-04-20 | 山东科技大学 | A kind of strip-type underground coal gasification system and production method |
| CN104314549B (en) * | 2014-09-26 | 2019-01-15 | 新奥科技发展有限公司 | Coal layer underground gasifying method |
| CN115306368A (en) * | 2022-09-14 | 2022-11-08 | 宁夏回族自治区矿产地质调查院(自治区矿产地质研究所) | Gas injection point retreating type coal underground gasification system and process |
-
2013
- 2013-06-21 CN CN201320357581.5U patent/CN203383803U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277082A (en) * | 2013-06-21 | 2013-09-04 | 北京中矿科能煤炭地下气化技术研究中心 | Gas injection point retreating type coal underground gasification system and process |
| CN103277082B (en) * | 2013-06-21 | 2015-10-28 | 河南中矿科能煤业化工有限公司 | A kind of injection point backing formula underground coal gasification system and technique |
| CN104314549B (en) * | 2014-09-26 | 2019-01-15 | 新奥科技发展有限公司 | Coal layer underground gasifying method |
| CN104564011A (en) * | 2015-02-11 | 2015-04-29 | 新奥气化采煤有限公司 | Underground gasification method |
| CN104564011B (en) * | 2015-02-11 | 2018-08-14 | 新奥科技发展有限公司 | A kind of underground gasification method |
| CN106089177A (en) * | 2016-08-18 | 2016-11-09 | 中国矿业大学(北京) | A kind of high-efficiency coal underground gasification furnace and construction method thereof |
| CN106089177B (en) * | 2016-08-18 | 2018-08-28 | 中国矿业大学(北京) | A kind of high-efficiency coal underground gasification furnace and its construction method |
| CN107387055A (en) * | 2017-09-18 | 2017-11-24 | 山东科技大学 | A kind of mobile gas injection device and method suitable for underground coal gasification(UCG) |
| CN107387055B (en) * | 2017-09-18 | 2019-09-20 | 山东科技大学 | A kind of mobile gas injection device and method suitable for underground coal gasification(UCG) |
| CN107939370A (en) * | 2017-12-11 | 2018-04-20 | 山东科技大学 | A kind of strip-type underground coal gasification system and production method |
| CN115306368A (en) * | 2022-09-14 | 2022-11-08 | 宁夏回族自治区矿产地质调查院(自治区矿产地质研究所) | Gas injection point retreating type coal underground gasification system and process |
| CN115306368B (en) * | 2022-09-14 | 2023-07-14 | 宁夏回族自治区矿产地质调查院(自治区矿产地质研究所) | Gas injection point retreating type coal underground gasification system and process |
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