CN102155255B - Safety production power generation technology by unstable gas source - Google Patents
Safety production power generation technology by unstable gas source Download PDFInfo
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- CN102155255B CN102155255B CN2011100493838A CN201110049383A CN102155255B CN 102155255 B CN102155255 B CN 102155255B CN 2011100493838 A CN2011100493838 A CN 2011100493838A CN 201110049383 A CN201110049383 A CN 201110049383A CN 102155255 B CN102155255 B CN 102155255B
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- gas
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- concentration
- diesel oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The invention discloses a safety production power generation technology by an unstable gas source. A mode of combing underground gas extraction by sources and the front gas inlet of a mine generator set with gas ignition by a small quantity of diesel oil via the generator set is adopted, and the gas with an unstable concentration can be used for ensuring that the generator set can normally operate. A gas source pipeline is improved, the underground air source is divided into a main gas source (main pipeline) and an assistant gas source, thus the gas source is stable. Along with the continuous exploitation of the mine, the concentration of the extracted gas is continuously lowered. When the concentration is 5-9%, the diesel oil ignition technology is adopted, and the low-concentration gas can be fully utilized.
Description
Technical field
The present invention relates to the low concentration gas comprehensive utilization, especially unstable source of the gas low-concentration gas power generation.
Background technology
Gas, refer to coal bed gas or mine gas at coal circle, gas is gas colourless, tasteless, odorless, is 0.554 to the relative density of air, and the density of gas is 0.716kg under standard state, the penetrating power of gas is 1.6 times of air, be insoluble in water, not combustion-supportingly can not keep breathing, when reaching finite concentration, the people is suffocated because of anoxic, and burning or blast can occur.Gas exists with free state and sorption state in coal body or country rock.When oxygen concentration reached 10% in the air, if gas density between 5-16%, will be blasted, concentration just can quietly be burnt when 30% left and right sides.Therefore the life security that gas is directly threatening the miner for coal production, mine work is attached great importance to " gas ".Although gas is hazardous gas, if utilize properly, can not only promote Safety of Coal Mine Production, can also open up and utilize the energy.
CN1122889A(94117692.4) a kind of method of utilizing the industrial waste gas auxiliary power generation is disclosed, it is a kind of auxiliary power generation methods of as far as possible burning after damp slag oil first more, it is characterized in that: under the condition of given gas pressure and steam pressure, utilize the aperture of removing to control fuel tap between actual value and the set-point through the output signal after the PID adjustment, wherein, for gas, its pressure divergence signal is to go to control the fuel tap aperture to realize auxiliary power generation by compensation and the weight flow value after the conversion of the calorific value between gas and the residual oil flow through the gas weight flow.Steam flow then directly passes through a design factor Field adjustment to the impact of fuel tap aperture.Through probationary certificate: can replace the generating of part residual oil with gas.
CN1807963A(200610038093.2) a kind of gas constant ultra-low concentration conveying, purification and supercharging TRT are disclosed, comprise the gas constant ultra-low concentration case that communicates with the device in Gas floss hole, gas constant ultra-low concentration case communicates with air intake pipe by the air intake control valve, the gas vent of gas constant ultra-low concentration case communicates with the compressor of binary channels booster, the upper strata passage of the compressor of binary channels booster communicates with engine air inlet tube, and lower floor's passage of the compressor of binary channels booster is communicated with gas constant ultra-low concentration case by air intake control valve.Rely on underground air, the rare device in Gas of backflow to regulate mash gas concentration, but mash gas concentration is stabilized under the burning-point concentration, delivery safety, and by the binary channels booster, make device in Gas when entering motor by concentrate, concentration is more than 16%, adopts in the cylinder and mixes, enter engine combustion, guaranteed the equipment security of operation.
The defective that above-mentioned two technology exist is to be only applicable to high dense gas, the stable mine of source of the gas, especially can only utilize the gas of concentration more than 16% to generate electricity, when gas density is lower than 9%, can not be used for generating electricity, can only diffuse in the atmosphere, both pollute environment, waste again resource.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is actual to the present invention is directed to the unsettled coal production of methane gas concentration, and a kind of method of utilizing unstable gas source of the gas light concentration mash gas safety generating is provided.But also normal power generation when guaranteeing that gas density is lower than 9%.
Consider the unstable characteristics that are difficult to reach the generating requirement of methane gas, the present invention adopts air inlet before the down-hole minute source mash gas extraction, aboveground generating set, in conjunction with the mode of a small amount of diesel oil ignited gas of generating set, guarantee that the unsettled methane gas of concentration also can make generating set normally move.
Technical scheme of the present invention is as follows:
A kind of method of utilizing unstable gas source of the gas safety in production generating comprises gas pumping, the front air inlet of generating set and generating set generating, it is characterized in that:
(1) establishes the gas pumping mouth in hole, coal seam and the high-order hole of pit mining, the gas of extraction picks out by the down-hole branch line, the butterfly valve of methane gas flow meter and control source of the gas is housed on the branch line, and gas is by butterfly valve control and methane gas flow detection access main line; Hole, above-mentioned coal seam refers to the boring of constructing in the coal seam; Above-mentioned high-order hole refers to the boring in the roof construction;
(2) establish gas in old dead zone and gather port, the gas that gathers is as the distribution source, by distribution pipeline, butterfly valve and main line UNICOM.
(3) the 2BEC72 water-ring vacuum pump at main line UNICOM ground gas extraction station, between 2BEC72 water-ring vacuum pump air inlet pipe and escape pipe, establish the circulating valve of regulating the pipeline negative pressure, when the pipeline negative pressure raises, regulate circulating valve and reduce the pipeline negative pressure, require control piper pressure to be: 55 ~ 65MPa.Gas is connected to air inlet before the generating set by escape pipe, admission pressure 3-10KPa before the generator, and generated output is at 450-480KWh.
(4) additionally arranged diesel oil ignited device in the air inlet before the generating set, when mash gas extraction concentration drops to 5%-9%, opened diesel oil ignited device and replace plug ignition.
(5) establish electromagnetic valve and infrared methane sensor in generating set air inlet side, gas density raises suddenly, and when generated output surpassed rated power, the electromagnetic valve automatic closing gas source guaranteed the generating set safety in production.
The diesel oil ignited device of diesel oil ignited device of above-mentioned steps (4) is prior art, and it is to provide diesel oil by the diesel oil make-up system, at the diesel feeding pipe line auto-suction pipe oil pump and overhead diesel oil fuel reserve tank is installed.Diesel oil is transported to oil storage tank in the station by oil truck; Diesel oil in the oil storage tank utilizes the auto-suction pipe oil pump to be transported to the diesel oil fuel reserve tank, is diesel oil ignited low-concentration gas generating set fuel feeding.
The effect of this invention is; Improvement through to the source of the gas pipeline is divided into gas source (main line) and distribution source with the down-hole source of the gas, makes source of the gas stable.Along with the continuous exploitation of mine, mash gas extraction concentration constantly descends, and has adopted diesel oil ignited technology when concentration is 5%-9%, and low concentration gas is taken full advantage of.
The specific embodiment
Embodiment:
The gas electricity technique of the unstable source of the gas of the present invention is: air inlet before down-hole extraction branch line → down-hole extraction main line → ground gas extraction station → generating set → diesel oil make-up system → generating set.
Generating requires: gas density is more than 5%, pipeline pressure remains between 55-65MPa, suitably regulates partial circulating when pipeline pressure is lower than 55MPa, and combined amount is accounting for more than 70% of pipeline total flow, admission pressure 3-10KPa before the generator, generated output is at 450-480KWh.
1, down-hole extraction branch line
The butterfly valve of gas flow meter and control source of the gas has been installed at the down-hole branch line.Gas pipeline is picked out from hole, coal seam and high-order hole, by the detection access main line of butterfly valve control and methane gas flow.
2, down-hole extraction main line
Docking enters branch line gas density, the flow of main line to be regulated, and reaches the requirement of unit generation.
3, ground gas extraction station
Gas pipeline in the extraction process can produce negative pressure, in order to control negative pressure, according to the negative pressure fluctuation of extraction pipeline, when negative pressure raises, suitably regulates circulating valve, reduces negative pressure.
4, air inlet before the generating set
Set up electromagnetic valve and infrared methane sensor in generating set air inlet side, when gas density raise suddenly, combustion gas was with autoshutdown.Guaranteed the stable operation of generating set.
5, diesel oil make-up system
4 500kW diesel oil ignited low-concentration gas of this project installation generating set.The diesel oil ignited plug ignition that replaces of diesel oil ignited low-concentration gas generating set utilization trace.In order to ensure the reliability of the normal operation of diesel oil ignited low-concentration gas generating set and diesel oil conveying, the diesel oil make-up system arranges oil storage tank, and at the diesel feeding pipe line auto-suction pipe oil pump and overhead diesel oil fuel reserve tank is installed.Diesel oil is transported to oil storage tank in the station by oil truck; Diesel oil in the oil storage tank utilizes centrifugal oil pump to be transported to the diesel oil fuel reserve tank, is diesel oil ignited low-concentration gas generating set fuel feeding.
Utilization through diesel oil ignited technology reaches more than 5% gas density, takes full advantage of and generates electricity.
The development and utilization of diesel oil ignited low-concentration gas generation technology not only can effectively utilize the clear energy sources in coal seam, official Zhao colliery, and has good economic benefit and environmental benefit.
Claims (1)
1. one kind is utilized unstable gas source of the gas safety in production electrification technique as well as, comprises gas pumping, the front air inlet of generating set and generating set generating, it is characterized in that:
(1) establishes the gas pumping mouth in hole, coal seam and the high-order hole of pit mining, the gas of extraction picks out by the down-hole branch line, the butterfly valve of methane gas flow meter and control source of the gas is housed on the branch line, and gas is by butterfly valve control and methane gas flow detection access main line; Hole, above-mentioned coal seam refers to the boring of constructing in the coal seam; Above-mentioned high-order hole refers to the boring in the roof construction;
(2) establish gas in old dead zone and gather port, the gas that gathers is as the distribution source, by distribution pipeline, butterfly valve and main line UNICOM;
(3) the 2BEC72 water-ring vacuum pump at main line UNICOM ground gas extraction station, between 2BEC72 water-ring vacuum pump air inlet pipe and escape pipe, establish the circulating valve of regulating the pipeline negative pressure, when the pipeline negative pressure raises, regulate circulating valve and reduce the pipeline negative pressure, require control piper pressure to be: 55 ~ 65Mpa; Gas is connected to air inlet before the generating set by escape pipe, admission pressure 3-10Kpa before the generator, and generated output is at 450-480KWh;
(4) additionally arranged diesel oil ignited device in the air inlet before the generating set, when mash gas extraction concentration drops to 5%-9%, opened diesel oil ignited device and replace plug ignition;
(5) establish electromagnetic valve and infrared methane sensor in generating set air inlet side, gas density raises suddenly, and when generated output surpassed rated power, the electromagnetic valve automatic closing gas source guaranteed the generating set safety in production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100493838A CN102155255B (en) | 2011-02-27 | 2011-02-27 | Safety production power generation technology by unstable gas source |
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| CN2011100493838A CN102155255B (en) | 2011-02-27 | 2011-02-27 | Safety production power generation technology by unstable gas source |
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| CN102155255A CN102155255A (en) | 2011-08-17 |
| CN102155255B true CN102155255B (en) | 2013-04-10 |
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| CN2011100493838A Expired - Fee Related CN102155255B (en) | 2011-02-27 | 2011-02-27 | Safety production power generation technology by unstable gas source |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102493832A (en) * | 2011-11-16 | 2012-06-13 | 新汶矿业集团有限责任公司 | Method for safely generating power by aid of unstable gas sources |
| CN103016046A (en) * | 2012-12-11 | 2013-04-03 | 山东绿环动力设备有限公司 | Mash gas electricity generating system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6969123B2 (en) * | 2001-10-24 | 2005-11-29 | Shell Oil Company | Upgrading and mining of coal |
| US7047947B2 (en) * | 2004-08-26 | 2006-05-23 | Bi-Phase Technologies, Llc | LPG vehicular liquid transfer system |
| CN1846838A (en) * | 2005-04-11 | 2006-10-18 | 马遂根 | Coal mine gas burning and purifying treatment machine |
| CN101429873B (en) * | 2008-01-21 | 2011-04-13 | 樊铁山 | Method for directly driving coal mine main incline shaft belt conveyer by using gas engine |
| CN101915155A (en) * | 2010-07-09 | 2010-12-15 | 胜利油田胜利动力机械集团有限公司 | Diesel oil ignited low-concentration gas generator set |
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Granted publication date: 20130410 Termination date: 20160227 |