CN101648100A - Enrichment treatment device of methane in mine ventilation air - Google Patents
Enrichment treatment device of methane in mine ventilation air Download PDFInfo
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- CN101648100A CN101648100A CN200910187317A CN200910187317A CN101648100A CN 101648100 A CN101648100 A CN 101648100A CN 200910187317 A CN200910187317 A CN 200910187317A CN 200910187317 A CN200910187317 A CN 200910187317A CN 101648100 A CN101648100 A CN 101648100A
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Abstract
The invention relates to an enrichment treatment device of methane in mine ventilation air, solving the problem that the prior treatment device is difficult to improve the concentration of methane inventilation air and only purifies finished gas. The enrichment treatment device of methane in mine ventilation air comprises a separation and adsorption container group, a methane storer and a methaneenrichment treatment control device thereof. The enrichment treatment device of methane in mine ventilation air is characterized in that a ventilation air filter, a ventilation air booster pump, a ventilation air drying pretreatment device and a ventilation air pressure balance device which are sequentially communicated are connected with the separation and adsorption container group provided with at least two separation and adsorption containers; the separation and adsorption containers are communicated with each other by connecting electromagnetic valves; air inlet electromagnetic valves ofthe separation and adsorption containers are connected with the ventilation air pressure balance device; and air outlet electromagnetic valves and a separated methane delivery pump are connected witha separated methane temporary storage container and then connected with an enriched methane storage container. The invention has the advantages of reasonable design, stable operation, accurate control and compact structure, thereby obviously reducing the land area and the investment cost, sufficiently utilizing the methane in mine ventilation air as clean energy and realizing the clean emission of ventilation gas.
Description
Technical field
The present invention relates to a kind of to low-concentration methane (CH in the mine air-lack
4) enriching apparatus, the particularly a kind of low concentration (0.1%-0.7%) that lacks methane in the wind can being brought up to than the enrichment treatment device of methane in the mine air-lack of higher concentration (2%-4%).
Background technology
Along with the continuous growth of energy demand, the development distributed energy becomes energy savings, solves one of main path of current energy crisis, and enrich, cheap, a large amount of weary wind-resources that exists is exactly reliable source of the gas assurance.Mine air-lack means that methane concentration is lower than 0.75% coal mine to ventilate mash gas, and the gas exhaust system directly is discharged into this part gas in the atmosphere with return airway.Because methane content is extremely low in the weary wind, if utilize prior art to separate purification, power consumption will be considerably beyond the energy that obtains methane, and is very uneconomical.Income can't be utilized and obtain to unprocessed can not directly burning of methane of this concentration in the existing coal mining, and because of can only empty arranging for a long time, the power consumption that is used to ventilate is big, so caused huge energy waste and environmental pollution.And influence contains the weary wind discharging of low-concentration methane gas, is again some coalmine ventilation deficiency, causes one of reason of mine gas.Therefore, realize the weary wind that contains low-concentration methane gas is handled, reach the purpose of the energy utilization of cleaning discharging and enrichment gas, will promote the well-being of mankind, bring benefit to the next generation.
The weary present processing method of wind mainly contains: the first will lack wind as combustion air in the grass treating apparatus.Its basic comprising is blower fan and the pipeline that is connected weary air port and boiler.Require in the practical application length of pipeline can not be oversize, methane concentration can not be too low, so use also restricted.It two is to utilize weary wind adiabatic combustion that methane oxidation is CO
2Because methane concentration is too low, be not enough to support burning, therefore can not adopt conventional firing method.The ventilation air methane adiabatic combustion adopts heat rejector stream reaction technology, and noncatalytic combustion and catalytic combustion dual mode are arranged, and the former reactor center is the ceramic heat-storing layer, and the latter is a beds.Weary wind adiabatic combustion method is directly weary wind to be handled, so its treating capacity is bigger, equipment volume is also too huge.Simultaneously, the concentration of weary wind neither be too stable, and especially weary wind concentration is very low and do not have the higher concentration methane gas to join when mixing, and this method realizes just more difficult.The pressure swing absorption process of the separation contactor of the built-in adsorbent of molecular sieve of its three employing or the method that film separates improve the concentration of methane in the weary wind.Advantages such as energy consumption is low although this pressure swing absorption process has, the adsorbent cost is lower, initial investment is few, service cycle is short, the gas treatment amount is big, but only be confined to finished product gas is purified, be unsuitable for carrying dense containing low concentration (0.1%-0.7%) methane gas.Film separate with two kinds of methods of transformation absorption in methane to carry dense cost suitable, but the formation difference of the two cost.Mainly be that cost of investment is bigger in the cost of membrane separating method, and the operating cost ratio is less.Therefore, exploitation adapts to be carried densely to containing low-concentration methane gas, particularly the treating apparatus of weary wind has been become current scientific and technical personnel's important subject.
Summary of the invention
The purpose of this invention is to provide the enrichment treatment device of methane in a kind of mine air-lack, the raising that it has solved existing treating apparatus existence lacks the concentration difficulty of methane in the wind, the problem of only finished product gas being purified, it is reasonable in design, stable, control accurately, compact conformation, significantly reduce area occupied and cost of investment, improved the service efficiency of equipment, make full use of methane in the coal mine methane as clean energy resource, not only realize the cleaning discharging of ventilating gas, and can promote the enthusiasm of coalmine ventilation, advanced the safety in production in colliery.
The technical solution adopted in the present invention is: what the enrichment treatment device of methane in this mine air-lack comprised the built-in adsorbent of molecular sieve that is communicated with the floor grille of mine air return system separates contactor group and methane memory and methane-rich processing control apparatus thereof, its technical essential is: the weary wind cleaner that described floor grille is communicated with by order, weary wind force (forcing) pump, weary air-dry dry pretreatment unit is connected described separation contactor group with weary wind pressure bascule, have at least two to separate contactor in the described separation contactor group, utilize between the described separation contactor and connect the magnetic valve connection, described methane memory adopts temporary container of separation of methane and enrich methane memory, described separation contactor top exhaust outlet is connected by evacuation port magnetic valve and atmosphere, described separation contactor bottom air inlet mouth is connected with described weary wind pressure bascule by the air inlet magnetic valve, the bottom air outlet is connected with the temporary container of separation of methane delivery pump and separation of methane by the air outlet magnetic valve, and the temporary container of described separation of methane is by connecting the enrich methane reservoir vessel from methane pressurized delivered machine; Described weary wind cleaner is provided with weary wind flow sensor, weary wind regime pressure-regulating valve, weary wind pressure sensor, the ventilation air methane concentration sensor, weary rheumatism degree sensor and weary wind-warm syndrome degree sensor, described weary air-dry dry pretreatment unit has temperature sensor and humidity sensor, described weary wind pressure bascule is provided with pressure sensor, described separation contactor has pressure sensor and continuous pressure test chart, the temporary container of described separation of methane is provided with pressure sensor, sensing methane concentration device and methane flow sensor, described enrich methane memory is provided with pressure sensor.
Above-mentioned methane-rich processing control apparatus comprises that employing is a core with the PLC control module, respectively with power supply unit and be connected separate absorptive collection control module and pressure balance control module, with Ethernet crosspoint and the monitoring unit that is connected thereof, with air intake data sensor monitoring means, dry preprocessed data sensor monitoring unit and air draft data sensor monitoring means, with adsorpting data sensor monitoring unit, form control loop with enrich methane oxidation measurement and control unit, communication protocol by special use is carried out communication, weary wind flow sensor with relevant control point distribution in the described control loop, weary wind regime pressure-regulating valve, weary wind pressure sensor, the ventilation air methane concentration sensor, weary rheumatism degree sensor and weary wind-warm syndrome degree sensor, temperature sensor, humidity sensor, pressure sensor, the continuous pressure test chart, advance, the air outlet magnetic valve, the evacuation port magnetic valve is sent in the described PLC control module with service data that is connected magnetic valve and status signal, described PLC control module calculates according to preset program and technical process and judges, thereby carry out corresponding action and flow process, and judge whether described service data and status signal be normal, take corresponding technological measure, simultaneously the corresponding sensing element that human-computer interface system can intuitive and convenient to the described control module in the described control loop, test chart, the control of magnetic valve shows and realizes unattended automatic operation, conversion.
Advantage and good effect that the present invention has are: because the present invention adopts weary wind cleaner that weary wind is carried out impurity and purification to handle, so can remove most of dust, moisture, oil content that weary wind carries, do not stopped up and pollute to guarantee aftertreatment device.Clean weary wind is by weary wind force (forcing) pump, pressure is elevated to 0.2-0.4Mpa after, satisfy the conveying and the required pressure of methane separation of methane in the weary wind, weary wind pressure increases, and also helps the purification and the drying of next step methane.Because of also containing certain moisture and multiple gases in the weary wind, what have also contains H
2S gas, these gaseous mixtures cognition have a strong impact on the service life of the transformation adsorption efficiency and the equipment of threat of weary wind, so further remove H2S, processing such as dehydrate through weary air-dry dry pretreatment unit again, significantly reduce the volume of methane-containing gas, also reduced the volume and the cost of investment of subsequent applications device.By weary wind pressure bascule pressure is carried out equilibrium treatment then, provide in the methane separation absorptive collection container that pressure stable enters built-in adsorbent of molecular sieve, this container is the transformation absorption principle that utilizes technology ripe relatively, come methane separation, absorption in the weary wind, thereby improve the concentration of methane in the weary wind, the methane constantly separated by after the temporary containers store, concentrates the back through pressurizeing again and carries earlier, therefore is easy to realize lacking the methane-rich in the wind.Because global design of the present invention is reasonable, compact conformation, the volume of used treating apparatus is little, so can significantly reduce area occupied and reduce cost of investment, has improved the service efficiency of equipment.Because of it makes full use of methane in the coal mine methane as clean energy resource, so not only realized the cleaning discharging of ventilating gas, and can also promote the enthusiasm of coalmine ventilation, advance the safety in production in colliery, the problem that the raising that has also solved existing treating apparatus existence preferably lacks the concentration difficulty of methane in the wind, only finished product gas purified, the control of all operations step of the present invention in addition all focuses in the control room, and under the intelligent automation control of methane-rich processing control apparatus, carry out, can improve the stability and the reliability of operation.This control device all technological parameters to collecting; as pressure; temperature; flow; the variable quantity of concentration etc. can be optimized and handle according to the predefined numerical value that meets best production technology; control loop is operated steadily; control accurately; efficiently; when control device can not make corresponding process parameters reach prescribed limit; for example: pressure; temperature; flow; concentration etc.; control device can start early warning and the warning or the shutdown procedure of appropriate level automatically; the valve and the equipment of closing each influence safety simultaneously and producing; when various monitor datas all reach requirement; all devices all can be produced continuously according to predefined optimum state among the present invention, can reach maximum production efficiency and product quality.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described.
Fig. 1 is a kind of structured flowchart of the present invention.
Fig. 2 is a kind of control principle schematic diagram of the present invention.
Sequence number explanation among the figure: 1 methane-rich processing control apparatus, 2 weary wind flow sensors, 3 weary wind regime pressure-regulating valves, 4 weary wind pressure sensors, 5 ventilation air methane concentration sensors, 6 weary rheumatism degree sensors, 7 weary wind-warm syndrome degree sensors, 8 weary wind cleaners, 9 weary wind force (forcing) pumps, 10 weary air-dry dry pretreatment unit temperature sensors, 11 weary air-dry dry pretreatment units, 12 weary air-dry dry pretreatment unit outlet humidity sensors, 13 weary wind pressure bascule pressure sensors, 14 weary wind pressure bascules, 15 separate contactor air inlet magnetic valve, 16 separate contactor air outlet magnetic valve, 17 separate contactor continuous pressure test chart, 18 separate contactor, 19 separate the contactor outlet pressure sensor, 20 separate contactor evacuation port magnetic valve, 21 separate contactor evacuation port magnetic valve, 22 connect magnetic valve, 23 discharging sensing methane concentration devices, 24 separate the contactor outlet pressure sensor, 25 separate contactor, 26 separate contactor continuous pressure test chart, 27 separate contactor air inlet magnetic valve, 28 separate contactor air outlet magnetic valve, 29 separation of methane delivery pumps, 30 separation of methane are kept in the container pressure sensor, 31 sensing methane concentration devices, 32 separation of methane are kept in container, 33 methane flow sensors, 34 separation of methane pressurized delivered machines, 35 enrich methane memory pressure sensors, 36 enrich methane memories, 37 enrich methane oxidation units, 38 methane oxidation devices outlet sensing methane concentration device.
The specific embodiment
Describe concrete structure of the present invention in detail according to Fig. 1～2.What the enrichment treatment device of methane in this mine air-lack comprised the weary wind cleaner 8 that is communicated with the floor grille (not shown) of mine air return system, weary wind force (forcing) pump 9, weary air-dry dry pretreatment unit 11, weary wind pressure bascule 14, built-in adsorbent of molecular sieve separates contactor group, separation of methane delivery pump 29, the temporary container 32 of separation of methane, separation of methane pressurized delivered machine 34, enrich methane memory 36 and methane-rich processing control apparatus 1 thereof etc.Wherein weary air-dry dry pretreatment unit 11 adopts the general drying equipment that can control the temperature and humidity of gas by sensor.Weary wind pressure bascule 14 adopts can be balanced, the container of steady pressure.Adopt the separation contactor group of the built-in adsorbent of molecular sieve of transformation absorption principle enrich methane a plurality of contactors that separate to be set, but will have two separation contactors to cooperatively interact at least according to the needs of methane concentration in the weary wind of processing and comprehensive utilization ability.Separate the absorptive collection operation by alternate cycles, to reach the purpose of continuous enrich methane.Present embodiment adopts two, promptly separates contactor 18 and connects magnetic valve 22 connections with separating to utilize between contactor 25, the two separation contactors.Separating the top exhaust outlet of contactor 18,25 connects by separately evacuation port magnetic valve 20,21 and atmosphere respectively.The bottom air inlet mouth of separation contactor 18,25 is connected with weary wind pressure bascule 14 by air inlet magnetic valve 15,27 separately.The bottom air outlet of separation contactor 18,25 is connected with separation of methane delivery pump 29 and the temporary container 32 of separation of methane by air outlet magnetic valve 16,28 separately.The temporary container 32 of separation of methane is by connecting enrich methane reservoir vessel 36 from methane pressurized delivered machine 34.For the ease of realizing automatic control, weary wind cleaner 8 is provided with weary wind flow sensor 2, weary wind regime pressure-regulating valve 3, weary wind pressure sensor 4, ventilation air methane concentration sensor 5, weary rheumatism degree sensor 6 and weary wind-warm syndrome degree sensor 7; Weary air-dry dry pretreatment unit 11 has temperature sensor 10 and humidity sensor 12; Weary wind pressure bascule 14 is provided with pressure sensor 13; Separate contactor 18 and have pressure sensor 19 and continuous pressure test chart 17; Separate contactor 25 and have pressure sensor 24 and continuous pressure test chart 26, the temporary container 32 of separation of methane is provided with pressure sensor 30, sensing methane concentration device 31 and methane flow sensor 33, and enrich methane memory 36 is provided with pressure sensor 35.The control of the corresponding sensing element of said apparatus and setting thereof, test chart, magnetic valve etc. is all carried out intelligent automation control by methane-rich processing control apparatus 1.
The course of work of this enrichment treatment device of methane is as follows: after mine air-lack is guided to floor grille through the existing air return system of mine, draw weary airduct road by special use and cause weary wind cleaner 8, clean relatively after treatment weary wind, at normal temperatures by after weary wind force (forcing) pump (Roots blower) 9 pressurizations, pressure is elevated to 0.2-0.4MPa, enters weary air-dry dry pretreatment unit 11 and remove H
2S, dehydrate etc.Clean pressurized weary wind enters weary wind pressure bascule 14 through weary air-dry dry pretreatment unit 11, close and separate contactor air outlet magnetic valve 16, open and separate contactor evacuation port magnetic valve 20, open and separate contactor air inlet magnetic valve 15, introduce the weary wind of clean relatively voltage stabilizing and carry out methane absorption in the contactor 18 to separating.Separation removal the Purge gas of methane enter atmosphere through separating contactor evacuation port magnetic valve 20, separate adsorbents adsorb in the contactor 18 before close on saturation state, separating contactor 25 also joins in the absorption process, the work conversion that is two containers is prepared, and (program of adding is: close and separate contactor air outlet magnetic valve 28, open and separate contactor evacuation port magnetic valve 21, open the weary wind of separation contactor air inlet magnetic valve 27 introducings and carry out methane absorption in the contactor 25 to separating.The separation removal that was adsorbed the Purge gas of methane enter atmosphere through separating contactor evacuation port magnetic valve 21, separate contactor continuous pressure test chart 26 and in the course of work of whole separation contactor, its pressure done real-time detection).After separating contactor 25 intervention operations, close and separate contactor air inlet magnetic valve 15, close and separate contactor evacuation port magnetic valve 20, open and separate contactor air outlet magnetic valve 16, to connect magnetic valve 22 appropriateness simultaneously and open a period of time, creating conditions for improve separating the contactor desorption efficiency that reduces pressure.Separate the contactor 18 desorb program that reduces pressure, separate contactor continuous pressure test chart 17 and in the course of work of whole separation contactor 18, its pressure is done real-time detection.The methane gas of separating is collected in the decompression desorb, delivers in the temporary container 32 of separation of methane temporary through separation of methane delivery pump (Roots vaccum pump) 29.Again with after 34 pressurizations of separation of methane pressurized delivered machine, be transported in the enrich methane reservoir vessel 36 and store, can act as a fuel to the methane of collecting and use or utilize enrich methane oxidation unit 37 to carry out oxidation processes.The control of above-mentioned all operations step all is to carry out under the control of the methane-rich processing control apparatus 1 of intelligent automation.
The separation contactor 18 that the present invention adopts or 25 pairs of ventilation air methanes concentrated be utilize built-in adsorbent of molecular sieve under certain pressure and temperature to methane and other components in the weary wind (as N
2, O
2Deng) the characterization of adsorption difference, and methane that will be wherein separates.Because the adsorbent of selecting for use compares N to the adsorption capacity of methane
2, O
2Greatly, thus be occluded on the adsorbent, and all the other compositions that removed methane as the emission gases of cleaning by the top exhaust outlet that separates contactor 18 or 25 respectively the evacuation port magnetic valve 20,21 by separately be discharged in the atmosphere.And then under low pressure the methane on the adsorbent carries out desorb in the contactor 18 or 25 to separating, and adsorbed methane and remaining other composition major part are by desorb on the adsorbent.In the stripping gas methane by enrichment after, collect and use as acting as a fuel or utilize enrich methane oxidation unit 37 to carry out oxidation processes.Meanwhile, also be restored, for next absorption operation is got ready by the adsorbents adsorb characteristic after the decompression desorb.
The control mode of system can adopt manually and automatically and control two kinds, the debugging of manual mode suitable device, maintenance and particular job state.Because by-pass valve control quantity is many in the transformation absorption vacuum flow process, the flow process control point is also many, therefore, in order to alleviate cumbersome operation, improve automatization level, we focus on the control room with all controls, are to carry out under the intelligent automation control of methane-rich processing control apparatus 1.This methane-rich processing control apparatus 1 possess skills advanced person, reliable, stable, the handling height of system, data acquisition promptly and accurately, control instruction assigns and is in time accurately, the actuating equipment reaction is quick, carry out good, durable in use, the advantages such as the letter price ratio is better, man-machine interface convenience, interface humanization designing of equipment quality correct, that system relates to by instruction.Can check the running status and the workflow of weary wind processing procedure by the display data presented the control room operating personnel, and the judgement of complicated handling process and technological parameter and calculating are all controlled automatically by the program of establishment in advance, both improved the product quality that weary wind is handled, also improve the operational efficiency of system, alleviated operator's the labour intensity and the separation costs of weary wind greatly.
For the safe operation that guarantees equipment and prevent contingency; the present invention particularly separates setting pressure sensor and safety relief valve on contactor 18 or 25, the temporary container 32 of separation of methane and the enrich methane reservoir vessel 36 at each control point; when methane-rich processing control apparatus 1 receives pressure signal on the pressure sensor when having exceeded predefined safe pressure value; methane-rich processing control apparatus 1 meeting security of operation control program reduces the pressure protect equipment safety operation.At factory building and key position the sensing methane concentration device is installed; sensing methane concentration device trigger protection device when the methane leakage takes place; for example ventilating system etc. is given 1 one alarm signals of methane-rich processing control apparatus simultaneously, takes corresponding measure with alert.
Methane-rich processing control apparatus 1 mainly comprises: with PLC control module 1002 is core, respectively with power supply unit 1001 and be connected separate absorptive collection control module 1050 and pressure balance control module 1060, with Ethernet crosspoint 1003 and the monitoring unit 1080 that is connected thereof, with air intake data sensor monitoring means 1010, dry preprocessed data sensor monitoring unit 1020 and air draft data sensor monitoring means 1030, with adsorpting data sensor monitoring unit 1040, form control loop with enrich methane oxidation measurement and control unit 1070 grades, carry out communication by the communication protocol of special use.By the relevant control point that distributes in the control loop the corresponding sensing element that distributes, test chart, the data and the state of magnetic valve operation are sent in the PLC control module 1002, PLC control module 1002 calculates according to preset program and technical process and judges, thereby carry out corresponding action and flow process, and judge the corresponding technological measure that related data is whether normal and take, man-machine interface (HMI) system can intuitive and convenient simultaneously to various device in the control loop and the corresponding sensing element that separates the absorptive collection control module, test chart, magnetic valves etc. are realized unattended automatic operation, conversion.Can also switch to the program manual state in extraordinary circumstances in the control room and carry out the man-to-man independent operation of equipment.And on the HMI picture promptly and accurately demonstrate current equipment operating data and state of the art, all data and the operation that are produced in the weary wind processing procedure of record and preservation, for example air intake pressure, temperature, methane concentration, go out wind pressure, temperature, methane concentration, important parameter and important logouts such as warning, production process and equipment operation such as the methane concentration of emptying pure air are to realize full process automatization control.Wherein:
Processing power supply unit 1001 can feed out cabinet, low pressure incoming line cabinet, low-voltage distribution cabinet, low-voltage-powered cabinet etc. by high pressure incoming line cabinet, PT cabinet, transformer case, high pressure according to actual needs and form.It mainly acts on is action and the operation that the control signal that PLC control module 1002 sends is converted to equipment; thereby realize distributing electric load; the relay protection of monitoring electric equipment operation state, realization electrical equipment comprises functions such as overcurrent protection, overvoltage protection, short-circuit protection, open-phase protection, current/voltage detection.
PLC control module 1002 mainly is made up of following common component: PLC power supply, PLC central processing unit, digital quantity input module, digital quantity output module, analog quantity input module, analog output module, ethernet communication module, facility network communication module etc.Its information of utilizing the logical operation function of PLC central processing unit that various inputs, output module collection are come is carried out integrated treatment and is judged, realize the collection and the computing of signal by predefined program, the result is outputed to processing power supply unit 1001 or various performance element, come the automatic operation of control system.
Ethernet crosspoint 1003 is made up of Ethernet switch, router, gateway etc., and it is the passage that PLC control module 1002 is connected with monitoring unit 1080, and the transmission by passage realizes that PLC control module 1002 is connected with the accessible of external equipment.Its data that successfully the ethernet communication module of PLC control module 1002 transmitted utilize Ethernet switch to be sent to Wide Area Network, can realize control device data sharing, long-rangely check, function such as remote monitoring, WEB issue.
Air intake data sensor monitoring means 1010 mainly is the real-time significant data that the weary wind of air intake is provided for PLC control module 1002.It is made up of weary wind flow sensor 2, weary wind regime pressure-regulating valve 3, weary wind pressure sensor 4, ventilation air methane concentration sensor 5, weary rheumatism degree sensor 6, weary wind-warm syndrome degree sensor 7 etc.Handle needed all parameters and numerical value by the weary wind of the data pick-up collection at above-mentioned air intake place, for methane-rich processing control apparatus 1 provides the weary needed important parameter of wind subsequent treatment.Wherein: weary wind flow sensor 2, weary wind regime pressure-regulating valve 3, weary wind pressure sensor 4 provide weary wind air intake total flow and pressure, enter PLC control module 1002 and be used for judging weary wind flow whether in normal range (NR), PLC control module 1002 with this as mine air-lack normal foundation whether.Ventilation air methane concentration sensor 5 provides the methane concentration of weary wind air intake, enters PLC control module 1002 and is used for judging ventilation air methane concentration whether in normal range (NR), and handling for next step methane-rich provides important parameter.Weary rheumatism degree sensor 6, weary wind-warm syndrome degree sensor 7 provide the humidity and the temperature parameter of weary wind air intake, for weary air-dry dry pretreatment unit 11 provides deal with data.
Dry preprocessed data sensor monitoring unit 1020 is made up of weary air-dry dry pretreatment unit temperature sensor 10, weary air-dry dry pretreatment unit outlet humidity sensor 12.The weary wind cumulative water-oil ratio of mine is more, and too much hydrone can influence the efficient of transformation absorption, and absorption property is descended, and reduces the adsorbent life-span, dehydrates processing so will do weary wind.It mainly is to cooperate weary air-dry dry pretreatment unit 11 to realize the automatic adjusting of weary rheumatism degree and temperature, for the subsequent treatment that lacks wind provides optimum drying condition and safeguard protection.Wherein: weary air-dry dry pretreatment unit outlet humidity sensor 12 cooperates weary air-dry dry pretreatment unit 11 to realize the automatic adjusting of weary rheumatism degree; for the subsequent treatment that lacks wind provides optimum condition; during weary air-dry dry pretreatment unit 11 temperature inside superelevation that weary air-dry dry pretreatment unit temperature sensor 10 provides, thereby methane-rich processing control apparatus 1 is made the safety that the corresponding actions protection lacks air-dry dry pretreatment unit 11.
Air draft data sensor monitoring means 1030 mainly is by discharging sensing methane concentration device 23, detect through directly being discharged into the methane concentration of gas in the air after the enrichment processing, it is the control action of ventilation air methane enrichment processing control apparatus 1 and the embodiment of operational efficiency.
Adsorpting data sensor monitoring unit 1040 mainly comprises following element: separate contactor 18 continuous pressure test charts 17, separation contactor 25 continuous pressure test charts 26, the temporary container pressure sensor 30 of separation of methane, weary wind pressure bascule pressure sensor 13, separate contactor 18 outlet pressure sensors 19, separate contactor 25 outlet pressure sensors 24, methane flow sensor 33, sensing methane concentration device 31 etc.Its effect is the real-time significant data that is delivered in weary wind in the adsorption process, for the site operation personnel provides the real-time status data, as PLC control module 1002 bases and reference data.Wherein: separate contactor 18 continuous pressure test charts 17, separate the contactor 25 continuous pressure test charts 26 current station measurement point force value that show directly perceived, check intuitively whether pressure is convenient to the staff and is in time understood field working conditions in normal range (NR).Separation of methane keeps in container pressure sensor 30, weary wind pressure bascule pressure sensor 13, separate contactor 18 outlet pressure sensors 19, separate contactor 25 outlet pressure sensors 24 can transmit current force value in real time; and send into PLC control module 1002 and be used for judging that current technological parameter is whether in normal range (NR); for next step processing provides important parameter; and PLC control module 1002 can be judged according to current pressure sensing data; whether force value is in the safety value scope, and take measures protection personnel and device security.Methane flow sensor 33, sensing methane concentration device 31 and separation of methane are kept in container pressure sensor 30, for PLC control module 1002 provides flow, concentration and the pressure parameter of methane, as PLC control module 1002 bases and reference data.
Separation absorptive collection control module 1050 is made up of separation contactor 18 air inlet magnetic valves 15, separation contactor 18 air outlet magnetic valves 16, separation contactor 18 evacuation port magnetic valves 20, connection magnetic valve 22, separation contactor 25 air inlet magnetic valves 27, separation contactor 25 air outlet magnetic valves 28, separation contactor 25 evacuation port magnetic valves 21 etc.Mainly be to be used for by controlling the connection and the disjunction of relevant position electromagnetic valve, to realize containing the methane-rich process of the weary general mood body of methane.Wherein: the absorption of methane is that the transducing signal that combines discharging sensing methane concentration device 23 is controlled with discharging, the live signal that is produced by discharging sensing methane concentration device 23 is sent in the PLC control module 1002 and is calculated and handle, obtain actual emptying methane concentration, when this concentration value during greater than the value set, control device thinks that promptly the methane ability of separating contactor 18 or 25 absorption of separation contactor is saturated, this timed unit starts the work conversion and the decompression resolving of two containers, the methane of resolving is to have adsorbed methane in the separation contactor of methane after will change by separation of methane delivery pump 29 with the mode sucking-off of negative pressure and be stored into separation of methane and keep in the container 32, the temporary container pressure sensor of being installed in the temporary container 32 of separation of methane 30 of separation of methane, methane flow sensor 33 and the corresponding transducing signal of sensing methane concentration device 31 generations are sent into and are calculated among the PLC and handle, draw instantaneous methane flow and concentration, and be sent to demonstration and record on the host computer.
Pressure balance control module 1060 comprises weary wind force (forcing) pump 9, separation of methane delivery pump 29, separation of methane pressurized delivered machine 34, weary wind regime pressure-regulating valve 3.It mainly is the blast that lacks wind in order to improve, and makes it to remain in the constant 0.2-0.4MPa, and so that weary wind required force value of each operation in adsorption process to be provided, each operation pressure of balance is for subsequent processing is got ready.Wherein: weary wind force (forcing) pump 9 cooperates the realization air intake to lack wind with weary wind regime pressure-regulating valve 3 constant voltage is 0.2-0.4MP, for the enrichment of methane provides reasonable pressure to make system reach maximum enrichment usefulness.Separation of methane delivery pump 29 is extracted the methane in the saturated separation contactor out and is collected the temporary buffering that reaches in the temporary container 32 of separation of methane with the mode of negative pressure, methane gas storage back in the temporary container 32 of separation of methane is compressed to methane 36 storages of enrich methane memory and passes through enrich methane memory pressure sensor 35 its pressure of monitoring by separation of methane pressurized delivered machine 34, for subsequent processing is got ready.
Enrich methane oxidation measurement and control unit 1070 is mainly measured methane concentration in the oxidation emission gases of processing of enrich methane oxidation unit 37 by methane oxidation device outlet sensing methane concentration device 38, monitors its treatment efficiency in real time.
Monitoring unit 1080 mainly comprises work station supervisory control comuter, engineer's supervisory control comuter, printer, server etc.It is as platform mutual between PLC control module 1002 and the operator, the operator can see the technological parameter and the equipment state of all key points of ventilation air methane enrichment processing control apparatus 1 intuitively, and can on work station supervisory control comuter, engineer's supervisory control comuter, control in real time, in work station supervisory control comuter, engineer's supervisory control comuter, can form various forms and chart according to the value of each technological parameter.By these patterned interfaces, the user can be provided with required working condition chart, system diagram, artwork, curve, rod figure etc., and monitors by floor data, the production process of these figures to reality.By system's key frame, the user only need click relevant button can enter corresponding functional modules.Graphics system provides the user interface of standard, comprise: menu, tool bar, dialog box, status bar, the user is undertaken alternately by the interface and the graphics system of these standards, with monitoring process and data, response methane-rich processing control apparatus 1 alarm event, tag mark is set on figure, process is controlled etc.According to the data in the database, can generate the form of various needs.
The warning trouble free service of ventilation air methane enrichment processing control apparatus 1 in the work engineering seems very important, when accident, anomalous event occurring and maybe need remind scheduling/operating personnel's incident, methane-rich processing control apparatus 1 just produces warning information automatically, provides alarm signal simultaneously.Warning information indicates the content of alarm: the reason of alarm (, overtemperature degree super as methane, weary wind pressure exceed standard, actuating equipment is unusual, the environment methane concentration transfinites, voltage, electric current not in prescribed limit etc.), the object that produces warning message, time of fire alarming etc.; Alarm signal is in order to remind the monitor staff, and mode has: printing, figure flicker, voice etc.Warning information is presented at the alarm window immediately, waits for monitor staff's affirmation; Warning information deposits database in, is provided with the back inquiry, and personnel query can provide querying condition: the classification of the time period of alarm, the object of alarm, alarm (factory site alarm, equipment alarm, Threshold Crossing Alert, accident alarm etc.).History alarm query function module can inquire all warning information of methane-rich processing control apparatus 1, comprises nearest warning information.
Claims (2)
1, enrichment treatment device of methane in a kind of mine air-lack, what comprise the built-in adsorbent of molecular sieve that is communicated with the floor grille of mine air return system separates contactor group and methane memory and methane-rich processing control apparatus thereof, it is characterized in that: the weary wind cleaner that described floor grille is communicated with by order, weary wind force (forcing) pump, weary air-dry dry pretreatment unit is connected described separation contactor group with weary wind pressure bascule, have at least two to separate contactor in the described separation contactor group, utilize between the described separation contactor and connect the magnetic valve connection, described methane memory adopts temporary container of separation of methane and enrich methane memory, described separation contactor top exhaust outlet is connected by evacuation port magnetic valve and atmosphere, described separation contactor bottom air inlet mouth is connected with described weary wind pressure bascule by the air inlet magnetic valve, the bottom air outlet is connected with the temporary container of separation of methane delivery pump and separation of methane by the air outlet magnetic valve, and the temporary container of described separation of methane is by connecting the enrich methane reservoir vessel from methane pressurized delivered machine; Described weary wind cleaner is provided with weary wind flow sensor, weary wind regime pressure-regulating valve, weary wind pressure sensor, the ventilation air methane concentration sensor, weary rheumatism degree sensor and weary wind-warm syndrome degree sensor, described weary air-dry dry pretreatment unit has temperature sensor and humidity sensor, described weary wind pressure bascule is provided with pressure sensor, described separation contactor has pressure sensor and continuous pressure test chart, the temporary container of described separation of methane is provided with pressure sensor, sensing methane concentration device and methane flow sensor, described enrich methane memory is provided with pressure sensor.
2, according to the enrichment treatment device of methane in the described mine air-lack of claim 1, it is characterized in that: described methane-rich processing control apparatus comprises that employing is a core with the PLC control module, respectively with power supply unit and be connected separate absorptive collection control module and pressure balance control module, with Ethernet crosspoint and the monitoring unit that is connected thereof, with air intake data sensor monitoring means, dry preprocessed data sensor monitoring unit and air draft data sensor monitoring means, with adsorpting data sensor monitoring unit, form control loop with enrich methane oxidation measurement and control unit, communication protocol by special use is carried out communication, utilize the relevant control point that distributes in the described control loop, the sensing element of described control module, test chart, the service data of magnetic valve and status signal are sent in the described PLC control module, described PLC control module calculates according to preset program and technical process and judges, thereby carry out corresponding action and flow process, and judge whether described service data and status signal be normal, take corresponding technological measure, simultaneously the sensing element that human-computer interface system can intuitive and convenient to the described control module in the described control loop, test chart, the control of magnetic valve shows and realizes unattended automatic operation, conversion.
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| CN200910187317A CN101648100A (en) | 2009-09-11 | 2009-09-11 | Enrichment treatment device of methane in mine ventilation air |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910187317A CN101648100A (en) | 2009-09-11 | 2009-09-11 | Enrichment treatment device of methane in mine ventilation air |
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| CN101955403A (en) * | 2010-04-27 | 2011-01-26 | 山东科技大学 | Technology and equipment for separating, enriching and recycling methane in mine return air stream |
| CN102661166A (en) * | 2012-05-03 | 2012-09-12 | 河南理工大学 | Method for purifying gas extracted by mine by using ionic liquid |
| CN102797498A (en) * | 2011-05-24 | 2012-11-28 | 淮南矿业(集团)有限责任公司 | Automatic draining system and method for mine gas extraction pipe network |
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- 2009-09-11 CN CN200910187317A patent/CN101648100A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955403A (en) * | 2010-04-27 | 2011-01-26 | 山东科技大学 | Technology and equipment for separating, enriching and recycling methane in mine return air stream |
| CN102797498A (en) * | 2011-05-24 | 2012-11-28 | 淮南矿业(集团)有限责任公司 | Automatic draining system and method for mine gas extraction pipe network |
| CN102661166A (en) * | 2012-05-03 | 2012-09-12 | 河南理工大学 | Method for purifying gas extracted by mine by using ionic liquid |
| CN102661166B (en) * | 2012-05-03 | 2014-03-26 | 河南理工大学 | Method for purifying gas extracted by mine by using ionic liquid |
| CN103691265A (en) * | 2013-12-30 | 2014-04-02 | 葛守飞 | System for controlling dioxin emission in flue gas in real time and working method thereof |
| CN103691265B (en) * | 2013-12-30 | 2016-04-27 | 葛守飞 | The system of real-time control Yan gas Zhong dioxin emission and method of work |
| CN109456809A (en) * | 2018-12-21 | 2019-03-12 | 开封黄河空分集团有限公司 | A kind of the biogas WATER-WASHING METHOD purification system and method for start & shutdown through one key |
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Open date: 20100217 |