CN102928260A - Fume heavy metal particle absorbing system and method - Google Patents
Fume heavy metal particle absorbing system and method Download PDFInfo
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- CN102928260A CN102928260A CN2012104854543A CN201210485454A CN102928260A CN 102928260 A CN102928260 A CN 102928260A CN 2012104854543 A CN2012104854543 A CN 2012104854543A CN 201210485454 A CN201210485454 A CN 201210485454A CN 102928260 A CN102928260 A CN 102928260A
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Abstract
The invention relates to the field of environment monitoring, and in particular relates to a fume heavy metal particle absorbing system which comprises a processor, a sampling device and an absorbing device, wherein the sampling device collects the fume discharged by a fume discharge pipeline and transmits the fume to the absorbing device when a sampling starting instruction transmitted by the processor is received; the absorbing device comprises an absorbing bottle with absorbing liquid; after receiving the fume, the absorbing liquid carries out physical absorption and chemical digestion on heavy metal particles in the fume, so that the heavy metal particles can be absorbed sufficiently, the collection effect of the heavy metal particles is improved, and correspondingly the detection precision in detecting the concentration of the heavy metal particles in the fume in a later process is improved.
Description
Technical field
The present invention relates to the environment measuring field, particularly relate to a kind of flue gas heavy metal particle absorption system and method.
Background technology
Industrial smoke is the potpourri of gas and flue dust, is the main cause of polluting the residential block atmosphere, and the composition of flue gas is very complicated, comprises SO in the gas
2, CO, CO
2Deng hydrocarbon, oxynitrides and heavy metal particles etc.Wherein, heavy metal refers to relative density at the metal more than 5, comprises copper, lead, zinc, tin etc.
For environment purification, industrial smoke is processed, need to know content and the kind of heavy metal particles thing in the industrial smoke, therefore, need to collect the heavy metal in the industrial smoke.Existing flue gas heavy metal particle gathering-device is when collecting the heavy metal particles thing, and the great majority of employing are the devices among Fig. 1, relies on the method realization of filter membrane enrichment to the collection of heavy metal particles thing.Heavy metal particles thing gathering-device among Fig. 1 comprises: flue gas transmission pipeline 101, filter membrane rotating shaft 102, filter membrane 103 and XRF (X RayFluorescence, X-ray fluorescence spectra analysis) analyser 104.When the heavy metal particles thing is collected, under the dynamic action of sampling pump, transmit the flue gas that contains the heavy metal particles thing by described flue gas transmission pipeline 101, described filter membrane rotating shaft 102 is mobile from left to right, thus it is thereupon mobile to drive described filter membrane 3.When flue gas passed through described filter membrane 103, diameter was blocked greater than the particle in filter membrane aperture, is attached on the described filter membrane.After the single sampling period finishes, described filter membrane axle 102 rotates, make absorption have the filter membrane of large aperture particle partly to move to described XRF analysis device 104 places, analyzed by 104 pairs of described large apertures of described XRF analysis device particle, and then obtain the information such as kind of the heavy metal that contains in the particle of described large aperture.
But, the inventor finds in the application's research process, employed heavy metal particles thing gathering-device adopts the mode Absorption of Heavy Metal of filter membrane enrichment in the prior art, but, the limitation in filter membrane aperture is larger, gas in the flue gas partly be can be good at by filter membrane, complete Adsorption of Heavy Metals particle again, and existing filter membrane is difficult to reach this requirement.For example, what existing gathering-device adopted mostly is the filter membrane in 0.5um aperture, and the particle that diameter is lower than 0.5un is difficult to be absorbed, cause larger absorption errors, if but adopt the less filter membrane in aperture, filter membrane stopped up easily, can't collect, thereby affect collection to the heavy metal particles thing; In addition, when adopting the method collection heavy metal particles thing of filter membrane enrichment, along with the time increases, the particle that adheres on the filter membrane also increases gradually, and the resistance that can cause gas to pass through filter membrane increases, and makes system be difficult to reach the uniform flow sampling; And, after each sampling period, when filter membrane is displaced to the XRF analysis device place and detects by mechanically operated mode, in moving process, filter membrane is owing to shake or be subject to the impact of unstable air-flow, all cause easily dropping of particle on the filter membrane, cause sampling error, affect follow-up accuracy of detection.Therefore, there is the problem that collecting effect is poor, accuracy of detection is low in heavy metal particles thing gathering-device of the prior art.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of flue gas heavy metal particle absorption system, when solving the heavy metal particles thing of prior art in absorbing flue gas, the problem that existing collecting effect is poor, accuracy of detection is low, specific embodiments is as follows:
A kind of flue gas heavy metal particle absorption system comprises:
Processor, described processor comprise the first sub-processor that is converted into corresponding steering order according to the input operation that receives, and described steering order comprises at least: begin the instruction of sampling;
Be connected with described processor, and be plugged in the fume emission pipeline, receive the transmission of described processor begin to sample after the instruction, gather the sampling apparatus of the flue gas that described fume emission pipeline discharges;
Absorption plant comprises and contains absorption liquid, is connected with described sampling apparatus, receives the flue gas of described sampling apparatus transmission, and by described absorption liquid, absorbs the absorption bottle of the heavy metal particles thing in the described flue gas.
Preferably,
Described processor also comprises: after generation begins to sample instruction, every the default time period, produce blowback and sweep the second sub-processor of instruction;
Described flue gas heavy metal particle absorption system also comprises:
Be connected with described processor, and be arranged between described sampling apparatus and the absorption plant, be connected with absorption plant with described sampling apparatus respectively, after receiving described blowback and sweeping instruction, make pressurized air be blown into the blowback sweeping device of described absorption plant from described sampling apparatus position.
Preferably, described flue gas heavy metal particle absorption system also comprises:
Parallel with described sampling apparatus is plugged on the described fume emission pipeline, detects the sampling place temperature and pressure flow detection device of differential pressure value and temperature value;
Be connected with described absorption plant, detect temperature and pressure flow detection device after the absorption of temperature value, force value and flow speed value of waste gas of the described absorption plant of flowing through;
The single-chip microcomputer that is connected with temperature and pressure flow detection device after the described absorption with described sampling place temperature and pressure flow detection device, described single-chip microcomputer is according to the described differential pressure value and the temperature value that obtain from described sampling temperature and pressure flow detection device, obtain the constant speed at described sampling apparatus place and follow the tracks of flow, the described temperature value that obtains according to temperature and pressure flow detection device after described absorption, force value and flow speed value, obtain the sample rate of the waste gas of the described absorption plant of flowing through, and follow the tracks of the comparative result of sampling flow corresponding to flow and described sample rate according to described constant speed, produce corresponding air pump steering order;
Be connected with temperature and pressure flow detection device after the described absorption with described single-chip microcomputer, the air pump of the waste gas after the described absorption of discharging process behind the temperature and pressure flow detection device, described air pump is after the described air pump steering order that receives described single-chip microcomputer transmission, according to the corresponding bleeding regulating flow of described air pump steering order, so that described constant speed is followed the tracks of flow and sampling flow corresponding to described sample rate equates.
Preferably, described flue gas heavy metal particle absorption system also comprises:
Be connected with described sampling apparatus, filter the first filtrator of the flue gas of described sampling apparatus transmission;
Place described the first filtrator, so that described the first filtrator remains on the heating box of stationary temperature.
Preferably, described flue gas heavy metal particle absorption system also comprises:
Be connected with described absorption plant, the waste gas of the described absorption plant of flowing through carried out the drying tube of drying;
Be connected with temperature and pressure flow detection device after the described absorption with described drying tube, filter the waste gas of the described drying tube of flowing through, and the waste gas after will filtering transfers to the second filtrator of temperature and pressure flow detection device after the described absorption.
Preferably, described flue gas heavy metal particle absorption system also comprises:
Be connected with described processor, produce the host computer of PC control instruction, described host computer with described PC control command to described processor, by described processor described PC control command is installed to corresponding, carry out the operation corresponding with described PC control instruction so that receive the device of described PC control instruction, described PC control instruction comprises at least: begin the instruction of sampling.
Preferably, described absorption bottle comprises at least:
One-level absorption bottle and the secondary absorption bottle that is connected with described one-level absorption bottle.
Preferably, described flue gas heavy metal particle absorption system also comprises:
Be arranged at the bottle side of afterbody absorption bottle, detect the liquid level of absorption liquid in the described afterbody absorption bottle, and level value is transferred to the liquid level detector of described processor;
Described processor also comprises: the described level value that receives described liquid level detector transmission, and when described level value reaches preset value, produce and finish the sampling instruction, to described sampling apparatus, make it finish the 3rd sub-processor of sampling described end sampling command.
Preferably, described sampling place temperature and pressure flow detection device comprises:
Thermometer, pressure gauge and differential pressure gauge.
Accordingly, the invention also discloses a kind of flue gas heavy metal particle absorption process, described method comprises:
According to the beginning sampling operation that receives, generation begins the instruction of sampling accordingly;
After producing the described instruction that begins to sample, gather the flue gas that the fume emission pipeline discharges;
The described flue gas that collects is transferred to absorption plant, absorb heavy metal particles thing in the described flue gas by the absorption liquid in the described absorption plant.
Above-mentioned disclosed flue gas heavy metal particle absorption system, comprise processor, sampling apparatus and absorption plant, begin to sample after the instruction what receive the transmission of described processor, described sampling apparatus can gather the flue gas that the fume emission pipeline discharges, and flue gas transferred to described absorption plant, described absorption plant comprises and contains the absorption liquid absorption bottle, after receiving described flue gas, heavy metal particles thing in absorption liquid and the flue gas carries out physisorption and chemical digesting, thereby can absorb fully described heavy metal particles thing, improve the collecting effect of heavy metal particles thing, improved accordingly the follow-up accuracy of detection that the heavy metal in flue gas particle concentration is detected.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is flue gas heavy metal particle gathering-device of the prior art;
Fig. 2 is the disclosed a kind of flue gas heavy metal particle absorption system of the embodiment of the invention;
Fig. 3 is disclosed another the flue gas heavy metal particle absorption system of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
In view of this, the object of the present invention is to provide a kind of flue gas heavy metal particle absorption system, when solving the heavy metal particles thing of prior art in absorbing flue gas, the problem that existing collecting effect is poor, accuracy of detection is low, specific embodiments is as follows:
The invention discloses a kind of flue gas heavy metal particle absorption system, referring to structural representation shown in Figure 2, described flue gas heavy metal particle absorption system comprises: processor 1, sampling apparatus 2 and absorption plant 3, wherein
Described processor 1 comprises the first sub-processor, and described the first sub-processor is used for being converted into corresponding steering order according to the input operation that receives, and described steering order comprises at least: begin the instruction of sampling; In addition, described processor 1 can also produce according to staff's operation and finish the sampling instruction, finishes the operation of sampling with control.Described processor 1 adopts programmable logic controller (PLC) (Programmable LogicController, PLC) usually, certainly, also can adopt the processor of other kinds, and the present invention does not do restriction.Wherein, the staff can be by operating described processor 1, certain sampling period is set, thereby described processor 1 was produced every one default period begin the instruction of sampling, perhaps, also can be after the input operation that at every turn receives the staff, just generation begins the instruction of sampling accordingly.
Described sampling apparatus 2 is connected with described processor 1, and is plugged in the fume emission pipeline, described sampling apparatus 1 be used for receive described processor 1 transmission begin to sample after the instruction, gather the flue gas that the fume emission pipeline discharges.Described sampling apparatus 2 generally comprises sampling head, and described sampling head transfers to described flue gas in the described absorption plant 3 after absorbing the flue gas of described flue gas exhausting pipe line discharging.In flue gas, generally mixing has a large amount of impurity, therefore, the sampling head that the present invention adopts has a lot of filter openings, with the large granular impurity in the filtering flue gas, when specifically using, the diameter of described filter opening is generally 50um, perhaps according to different sights, selects the sampling head with other size filter openings.
Described absorption plant 3 comprises the absorption bottle that contains absorption liquid, and described absorption bottle is connected with described sampling apparatus 2, is used for receiving the flue gas of described sampling apparatus 2 transmission, and absorbs heavy metal particles thing in the described flue gas by described absorption liquid.In order fully to absorb described heavy metal particles thing, described absorption bottle generally comprises the one-level absorption bottle at least, and the secondary absorption bottle that is connected with described one-level absorption bottle.After flue gas passes through described sampling apparatus 2, at first enter described one-level absorption bottle, when smoke gas flow behind the one-level absorption bottle, flow into again the secondary absorption bottle, carry out secondary absorption, absorption liquid in the absorption bottle is generally selected acid solution, can with flue gas in the generation physisorption of heavy metal particles thing and chemical digesting reaction, thereby can well absorb heavy metal particles thing in the flue gas.
When concrete the application, if when the heavy metal particles thing content in the flue gas is more, can suitably increase the quantity of absorption bottle, for example, behind the secondary absorption bottle, the three grades of absorption bottles or the more absorption bottle that are connected with the secondary absorption bottle are set.Heavy metal particles thing in the flue gas is through behind the described absorption plant 3, obtain containing the aaerosol solution of heavy metal particles and metal cation, so that follow-up when this solution is detected, described solution is transferred in the heavy metal analyser, can finish the heavy metal kind in the flue gas, the detection of concentration.And through behind the described absorption plant 3, the heavy metal particles thing in the flue gas is absorbed, and remaining waste gas is discharged from and gets final product.
Between described sampling apparatus 2 and the described absorption plant 3, generally adopt trace pipe to realize connecting, avoid flue gas in the process that transfers to described absorption plant 3, because temperature is lower, flue gas liquefaction is adsorbed on the duct wall after the particle that contains heavy metal is combined, and affects the precision of follow-up measurement.
In addition, can also be provided with filter core in the described absorption bottle, described absorption bottle is realized being connected with described sampling apparatus 2 by air induction conduit, after described sampling apparatus 2 collects flue gas, when entering in the described absorption bottle by described air induction conduit, under the effect of filter core, flue gas can change into minute bubbles, increased the contact area with absorption liquid, thereby the heavy metal particles in the flue gas that enters absorption bottle can be absorbed greatly.Be subject to the corrosion of absorption liquid for described filter core is avoided, described filter core generally adopts ceramic material.
Above-mentioned disclosed flue gas heavy metal particle absorption system, comprise processor, sampling apparatus and absorption plant, begin to sample after the instruction what receive the transmission of described processor, described sampling apparatus can gather the flue gas that the fume emission pipeline discharges, and flue gas transferred to described absorption plant, described absorption plant comprises the absorption bottle that contains absorption liquid, after receiving described flue gas, heavy metal particles thing in absorption liquid and the flue gas carries out physisorption and chemical digesting, thereby can absorb fully described heavy metal particles thing, improve the collecting effect of heavy metal particles thing, improved accordingly the follow-up accuracy of detection that the heavy metal in flue gas particle concentration is detected.
In addition, in the flue gas heavy metal particle absorption system disclosed in this invention, described processor 1 also comprises the second sub-processor, and described the second sub-processor is used for after generation begins to sample instruction, every the default time period, produces blowback and sweeps instruction.Wherein, the described default time period can be arranged by described processor 1 by the staff, perhaps, also can be by the staff every the default time period, processor 1 is carried out the input operation that blowback is swept, make described processor 1 according to described input operation, produce corresponding blowback and sweep instruction.
Referring to structural representation shown in Figure 3, described flue gas heavy metal particle absorption system also comprises: blowback sweeping device 4, described blowback sweeping device 4 is connected with described processor 1, and be arranged between described sampling apparatus 2 and the absorption plant 3, be connected with absorption plant 3 with described sampling apparatus 2 respectively, described blowback sweeping device 4 is used for making pressurized air be blown into described absorption plant 3 from the position of described sampling apparatus 2 after instruction is swept in the blowback that receives described processor 1 transmission.Described blowback sweeping device 4 utilizes clean air, with the heavy metal particles in the link of the described sampling apparatus 2 of connection and absorption plant 3, recoil is swept in the described absorption plant 3, absorbed by absorption bottle, avoided residual heavy metal particles thing in the link, affect collecting effect.
Wherein, described blowback sweeping device 4 generally comprises: four T-valve and trace pipe, the first port of the first T-valve is connected with the second port of the 3rd T-valve, and with provide compressed-air actuated device to link to each other so that pressurized air enters; The second port of described the first T-valve is connected with the first port of the second T-valve, and is connected with sampling apparatus 2, is used for receiving the flue gas that described sampling apparatus 2 gathers; The second port of described the second T-valve is connected with the first port of described the 3rd T-valve, and is connected with trace pipe simultaneously; Described trace pipe is connected with the first port of the 4th T-valve, and the second port of described the 4th T-valve is connected with absorption plant 3.Blowback sweeping device 4 disclosed in this invention after instruction is swept in the blowback that the described processor 1 of reception transmits, then is blown into pressurized air, makes residual heavy metal particles thing enter absorption plant 3.
In the scheme disclosed in this invention, being connected between described blowback sweeping device 4 and the described absorption plant 3, can adopt trace pipe to realize, described trace pipe keeps about 120 degrees centigrade temperature usually, make described flue gas can keep a suitable temperature to transfer in the described absorption plant 3, in order to avoid because temperature is excessively low, flue gas is converted into liquid state in transmission course, affect the assimilation effect of absorption plant 3.
Flue gas heavy metal particle absorption system disclosed in this invention, after collecting the heavy metal particles thing, can the concentration of heavy metal particles thing be detected, need to obtain the total amount by the flue gas of described flue gas heavy metal particle absorption system, therefore, when collecting the heavy metal particles thing, need to realize the uniform flow sampling.Accordingly, flue gas heavy metal particle absorption system disclosed in this invention also comprises: temperature and pressure flow detection device 6, single-chip microcomputer (not shown in FIG.) and air pump 7 after sampling place temperature and pressure flow detection device 5, the absorption, wherein,
Described sampling place temperature and pressure flow detection device 5 is with described sampling apparatus 2 parallel being plugged on the described fume emission pipeline, for detection of differential pressure value and temperature value.Wherein, described sampling place temperature and pressure flow detection device 5 comprises thermometer, pressure gauge and differential pressure gauge.
In described sampling place temperature and pressure flow detection device 5, use through long-term, the wireway of described differential pressure gauge might be stopped up by flue gas, thereby affects measurement result, therefore, usually need to carry out blowback to described differential pressure gauge, in this case, at described sampling place temperature and pressure flow detection device 5 a blowback case is set, for carrying out blowback, it provides stable blowback air potential source, when the needs blowback, by manually described blowback case being operated, realize the blowback to described differential pressure gauge.
Temperature and pressure flow detection device 6 after the described absorption is connected with described absorption plant 3, for detection of temperature value, force value and the flow speed value of the waste gas of the described absorption plant 3 of flowing through.
Described single-chip microcomputer, be connected with temperature and pressure flow detection device 6 after the described absorption with described sampling apparatus temperature and pressure flow detection device 5, be used for described differential pressure value and temperature value that basis obtains from described sampling apparatus temperature and pressure flow detection device 5, obtain the constant speed at described sampling apparatus place and follow the tracks of flow, the described temperature value that obtains according to temperature and pressure flow detection device 6 after described absorption, force value and flow speed value, obtain the sample rate of the waste gas of the described absorption plant 3 of flowing through, and follow the tracks of the comparative result of sampling flow corresponding to flow and described sample rate according to described constant speed, produce corresponding air pump steering order.Specifically, described single-chip microcomputer can be according to the temperature value and the differential pressure value that read from described sampling apparatus temperature and pressure flow detection device 5, calculate the flow velocity of the flue gas of sampling apparatus 2 sides, then, described single-chip microcomputer can be according to the sampling mouth sectional area of described sampling apparatus 2, and flue gas flow rate, converting obtains constant speed tracking flow; Described single-chip microcomputer after described absorption, obtain the temperature and pressure flow detection device 6 temperature value, force value and flow speed value, and calculate accordingly, the sample rate of the waste gas behind the described absorption plant 3 obtains flowing through, and described constant speed followed the tracks of flow and sampling flow corresponding to described sample rate compares, follow the tracks of sampling flow corresponding to flow and described sample rate when unequal in described constant speed, produce the air pump steering order, to control the extraction flow of described air pump 7.
Described air pump 7, be connected with temperature and pressure flow detection device 6 after the described absorption with described single-chip microcomputer, be used for discharging the waste gas through behind the temperature and pressure flow detection device 6 after the described absorption, and after the described air pump steering order that receives described single-chip microcomputer transmission, according to the corresponding bleeding regulating flow of described air pump steering order, so that described constant speed is followed the tracks of flow and sampling flow corresponding to described sample rate equates, thereby realize the uniform flow sampling.
In described flue gas heavy metal particle absorption system, can also comprise humidity detector, described humidity detector comprises: humidity sensor probe and flue gas moisture instrument, described humidity detector is arranged on the position that parallels with described sampling place temperature and pressure flow detection device, wherein said humidity sensor probe is plugged in the flue gas exhausting pipe line, for detection of the humidity in the described flue gas exhausting pipe line, and the humidity value that detects transferred in the flue gas moisture instrument.
In addition, described flue gas heavy metal particle absorption system also comprises: the first filtrator and heating box, described the first filtrator is connected with described sampling apparatus 2, when being provided with blowback sweeping device 4 in the described flue gas heavy metal particle absorption system, described the first filtrator can be arranged between described sampling apparatus 2 and the described blowback sweeping device 4, be used for filtering the flue gas of described sampling apparatus 1 transmission, in general, described the first filtrator adopts the 50um filter core, also can not affect the sample collection of heavy metal when preventing blocking pipeline.
Described the first filtrator is installed in the heating box, places described the first filtrator in the described heating box, so that described the first filtrator remains on a stationary temperature.
In addition, described flue gas heavy metal particle absorption system also comprises: drying tube 8 and the second filtrator 9, and described drying tube 8 is connected with described absorption plant 3, is used for the waste gas of the described absorption plant 3 of flowing through is carried out drying; Described the second filtrator 9 is connected with temperature and pressure flow detection device 6 after the described absorption with described drying tube 8, be used for to filter the waste gas of the described drying tube of flowing through, and the waste gas after will filtering transfers to temperature and pressure flow detection device 6 after the described absorption.
Described drying tube 8 and described the second filtrator 9 carry out drying and filtration to the waste gas behind the described absorption plant 3 respectively, are conducive to 6 pairs of waste gas of described temperature and pressure flow detection device and detect, and improve the serviceable life of described temperature and pressure flow detection device 6.
In addition, in the scheme disclosed in this invention, described flue gas heavy metal particle absorption system also comprises: liquid level detector, described liquid level detector is arranged at the bottle side of afterbody absorption bottle, for detection of the liquid level of absorption liquid in the described afterbody absorption bottle, and described level value transferred to described processor 1.Wherein said liquid level detector is generally selected infrared liquid level detector, certainly, also can adopt other liquid level detector, and the present invention does not do restriction.
Described processor 1 also comprises: the 3rd sub-processor, described the 3rd sub-processor is behind the described level value that receives described liquid level detector transmission, itself and preset value are compared, when described level value reaches preset value, described processor 1 can produce and finish the sampling instruction, and with described end sampling command to described sampling apparatus 2, so that described sampling apparatus 2 finishes sampling.
By liquid level detector is set, can make described processor 1 according to level value, in time produce and finish the sampling instruction, too high with the liquid level that prevents the afterbody absorption bottle, absorption liquid overflows.In addition, described processor 1 also can with the staff's that receives end input operation, be converted into corresponding end sampling instruction.
For the ease of realizing the Long-distance Control to flue gas heavy metal particle absorption process, flue gas heavy metal particle absorption system disclosed in this invention also comprises: host computer, described host computer is connected with described processor 1, for generation of the PC control instruction, and the described PC control command that will produce is to described processor 1, by described processor 1 described PC control command is installed to corresponding, carry out the operation corresponding with described PC control instruction so that receive the device of described PC control instruction, described PC control instruction comprises at least: begin the instruction of sampling.
The setting of described host computer is convenient to remote worker's realization to the control of flue gas heavy metal particle absorption process.For example, the remote worker can be by being arranged on long-range host computer and operating described, described host computer is produced begin the instruction of sampling, and with the described command that begins to sample to processor 1, by described processor 1 with the described command that begins to sample to sampling apparatus 2, so that described sampling apparatus 2 is carried out the operation that begins to sample.
Certainly, described PC control instruction can also comprise other instructions, as instruction etc. is swept in the instruction that finishes to sample, blowback, when for end sampling instruction, described host computer is sampled command to described processor 1 with described end, transmit it to described sampling apparatus 2 by described processor 1, make it finish sampling; When sweeping instruction for blowback, described host computer is swept command to described processor 1 with described blowback, by described processor 1 described blowback is swept command to blowback sweeping device 4, sweeps operation so that it carries out blowback.Flue gas heavy metal particle absorption system disclosed in this invention, can be when needs absorb the flue gas heavy metal particle, begin the instruction of sampling by the processor generation, the sampling apparatus that receives the described instruction that begins to sample is carried out sampling operation, and the flue gas that gathers transferred to absorption plant, and comprising the absorption bottle that contains absorption liquid in the described absorption plant, after described absorption bottle received described flue gas, absorption liquid can fully absorb heavy metal particles thing wherein.Come the Absorption of Heavy Metal particle by absorption liquid, avoided conventional art when the absorbing particles thing, the problem that collection efficiency is low has improved follow-up accuracy of detection.
And, blowback sweeping device in the described flue gas heavy metal particle absorption system utilizes pressurized air, and the realization blowback is swept, the heavy metal particles thing that remains between sampling apparatus and the absorption plant is blown to absorption bottle, fully absorbed the heavy metal particles thing in the flue gas.The setting of temperature and pressure flow detection device and single-chip microcomputer after sampling place temperature and pressure flow detection device in the described flue gas heavy metal particle absorption system, the absorption, can make native system when absorbing the flue gas heavy metal particle, reach the sampling of uniform flow, thereby be convenient to calculate kind and the content of heavy metal in flue gas particle.
In addition, flue gas heavy metal particle absorption system disclosed in this invention and since suitable interpolation filtrator, drying tube etc., can the filtering flue gas in the impurity of larger particles, be convenient to follow-up concentration to each heavy metal species in the flue gas and detect, and improved the serviceable life of each device.
In addition, the invention also discloses a kind of flue gas heavy metal particle absorption process, said method comprising the steps of:
The beginning sampling operation that step S1, basis receive, generation begins the instruction of sampling accordingly;
After step S2, the described instruction that begins to sample of generation, gather the flue gas that the fume emission pipeline discharges;
Step S3, the described flue gas that will collect transfer to absorption plant, absorb heavy metal particles thing in the described flue gas by the absorption liquid in the described absorption plant.
The method that provides to step S3 according to step S1, can be when needs absorb the flue gas heavy metal particle, generation begins the instruction of sampling, to begin to carry out sampling operation, and the flue gas that gathers transferred to the absorption bottle that contains absorption liquid, fully absorb wherein heavy metal particles thing by wherein absorption liquid.Come the Absorption of Heavy Metal particle by absorption liquid, avoided conventional art when the absorbing particles thing, the problem that collection efficiency is low has improved follow-up accuracy of detection.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a flue gas heavy metal particle absorption system is characterized in that, comprising:
Processor, described processor comprise the first sub-processor that is converted into corresponding steering order according to the input operation that receives, and described steering order comprises at least: begin the instruction of sampling;
Be connected with described processor, and be plugged in the fume emission pipeline, receive the transmission of described processor begin to sample after the instruction, gather the sampling apparatus of the flue gas that described fume emission pipeline discharges;
Absorption plant comprises and contains absorption liquid, is connected with described sampling apparatus, receives the flue gas of described sampling apparatus transmission, and by described absorption liquid, absorbs the absorption bottle of the heavy metal particles thing in the described flue gas.
2. system according to claim 1 is characterized in that,
Described processor also comprises: after generation begins to sample instruction, every the default time period, produce blowback and sweep the second sub-processor of instruction;
Described flue gas heavy metal particle absorption system also comprises:
Be connected with described processor, and be arranged between described sampling apparatus and the absorption plant, be connected with absorption plant with described sampling apparatus respectively, after receiving described blowback and sweeping instruction, make pressurized air be blown into the blowback sweeping device of described absorption plant from described sampling apparatus position.
3. system according to claim 1 is characterized in that, described flue gas heavy metal particle absorption system also comprises:
Parallel with described sampling apparatus is plugged on the described fume emission pipeline, detects the sampling place temperature and pressure flow detection device of differential pressure value and temperature value;
Be connected with described absorption plant, detect temperature and pressure flow detection device after the absorption of temperature value, force value and flow speed value of waste gas of the described absorption plant of flowing through;
The single-chip microcomputer that is connected with temperature and pressure flow detection device after the described absorption with described sampling place temperature and pressure flow detection device, described single-chip microcomputer is according to the described differential pressure value and the temperature value that obtain from described sampling temperature and pressure flow detection device, obtain the constant speed at described sampling apparatus place and follow the tracks of flow, the described temperature value that obtains according to temperature and pressure flow detection device after described absorption, force value and flow speed value, obtain the sample rate of the waste gas of the described absorption plant of flowing through, and follow the tracks of the comparative result of sampling flow corresponding to flow and described sample rate according to described constant speed, produce corresponding air pump steering order;
Be connected with temperature and pressure flow detection device after the described absorption with described single-chip microcomputer, the air pump of the waste gas after the described absorption of discharging process behind the temperature and pressure flow detection device, described air pump is after the described air pump steering order that receives described single-chip microcomputer transmission, according to the corresponding bleeding regulating flow of described air pump steering order, so that described constant speed is followed the tracks of flow and sampling flow corresponding to described sample rate equates.
4. system according to claim 1 is characterized in that, described flue gas heavy metal particle absorption system also comprises:
Be connected with described sampling apparatus, filter the first filtrator of the flue gas of described sampling apparatus transmission;
Place described the first filtrator, so that described the first filtrator remains on the heating box of stationary temperature.
5. system according to claim 3 is characterized in that, described flue gas heavy metal particle absorption system also comprises:
Be connected with described absorption plant, the waste gas of the described absorption plant of flowing through carried out the drying tube of drying;
Be connected with temperature and pressure flow detection device after the described absorption with described drying tube, filter the waste gas of the described drying tube of flowing through, and the waste gas after will filtering transfers to the second filtrator of temperature and pressure flow detection device after the described absorption.
6. system according to claim 1 is characterized in that, described flue gas heavy metal particle absorption system also comprises:
Be connected with described processor, produce the host computer of PC control instruction, described host computer with described PC control command to described processor, by described processor described PC control command is installed to corresponding, carry out the operation corresponding with described PC control instruction so that receive the device of described PC control instruction, described PC control instruction comprises at least: begin the instruction of sampling.
7. system according to claim 1 is characterized in that, described absorption bottle comprises at least:
One-level absorption bottle and the secondary absorption bottle that is connected with described one-level absorption bottle.
8. system according to claim 7 is characterized in that, described flue gas heavy metal particle absorption system also comprises:
Be arranged at the bottle side of afterbody absorption bottle, detect the liquid level of absorption liquid in the described afterbody absorption bottle, and level value is transferred to the liquid level detector of described processor;
Described processor also comprises: the described level value that receives described liquid level detector transmission, and when described level value reaches preset value, produce and finish the sampling instruction, and described end is sampled command to described sampling apparatus, make it finish the 3rd sub-processor of sampling.
9. system according to claim 3 is characterized in that, described sampling place temperature and pressure flow detection device comprises:
Thermometer, pressure gauge and differential pressure gauge.
10. flue gas heavy metal particle absorption process is characterized in that described method comprises:
According to the beginning sampling operation that receives, generation begins the instruction of sampling accordingly;
After producing the described instruction that begins to sample, gather the flue gas that the fume emission pipeline discharges;
The described flue gas that collects is transferred to absorption plant, absorb heavy metal particles thing in the described flue gas by the absorption liquid in the described absorption plant.
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| CN2012104854543A CN102928260A (en) | 2012-11-26 | 2012-11-26 | Fume heavy metal particle absorbing system and method |
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| CN2012104854543A CN102928260A (en) | 2012-11-26 | 2012-11-26 | Fume heavy metal particle absorbing system and method |
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