CN105548305A - Automatic device for measuring sulfur dioxide capacity of active coke with continuous method - Google Patents
Automatic device for measuring sulfur dioxide capacity of active coke with continuous method Download PDFInfo
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Abstract
The invention discloses an automatic device for measuring sulfur dioxide capacity of active coke with a continuous method. The automatic device comprises a flue gas mixing device, a water vapor generating device, a gas mixing device and a reaction tube, wherein the flue gas mixing device comprises a premixer; the water vapor generating device comprises a pump, a vaporizer and a gas flow meter, and water enters the vaporizer for vaporization via the pump; mixed gas is obtained after gas at an outlet of the premixer and water vapor after vaporization by the vaporizer enter the gas mixing device and enters the reaction tube via a pipeline; a resistance wire and a distribution plate are arranged in the reaction tube, the mixed gas is fully contacted with activated coke in the reaction tube, and the mixed gas after adsorption by the activated coke is discharged out of the reaction tube. Compared with existing devices, the automatic device has the characteristics that the sulfur dioxide adsorption capacity of the activated coke can be measured automatically, the gas component composition is accurate and stable, the integration level is high, the operation is convenient and quick and the like, and the method has positive significance in solving the problem of high difficulty in measurement of adsorption capacity of the activated coke at present.
Description
Technical field
The present invention relates to the green technology instrument and equipment of pollutant adsorption capacity, be specially adapted to activated coke adsorbed gas contaminant capacity field.
Background technology
Absorption method is adopted to deviate from the commercial Application of gas pollutant in recent years more and more extensive, such as flue gas desulfurization, sugar decolouring, petroleum vapor recovery, wastewater treatment etc., simultaneously, as the activated coke of adsorbent, activated charcoal, molecular sieve, the adsorption effect in practical application in industry such as zeyssatite and capacity situation are in the urgent need to quantitative and qualitative evaluation, at present, this industry is with strong points, the analytical and testing instrument of field relative narrowness is deficienter, it is in the majority that device is built in laboratory voluntarily, usually be difficult to realize robotization, scalarization, application condition is large, for the commercial plant that operates continuously, this interval gasifying device cost of labor is higher, be difficult to meet industrial scale measurement demand.
For desulfurizing industrial fume, power-plant flue gas comprises oxygen, nitrogen, water vapor, carbon dioxide, sulfide, oxides of nitrogen etc., and its composition is comparatively complicated.Due to flue-gas temperature more than 120 DEG C, when industry adopts active coke desulphurizing, the whole device stable operation of different size activated coke sulphuric dioxide adsorbance relation under different operating mode, realizes automatic assay activated coke sulphuric dioxide adsorbance device at present and substantially belongs to blank at home.
The experimental provision of the sulphuric dioxide adsorbance of general domestic mensuration activated coke in flue gas is made up of three parts: flue gas mixing arrangement, activated coke absorbing unit, flue gas form pick-up unit.Flue gas mixing arrangement comprises nitrogen, oxygen, sulphuric dioxide, water vapor is due to needs more than 120 DEG C insulation, therefore general enter after reactor heaters heating reactor directly with mixed gas and carried out after secondary mixing through activated coke, nitrogen, oxygen, sulphuric dioxide have calibrating gas, can be undertaken quantitatively by mass flowmeter.But water vapor has certain error at quantitative square mask at present, water is undertaken entering steam gasification device quantitatively by peristaltic pump or constant flow pump and gasifies, water vapor after gasification directly enters reactor and mixed gas and carry out secondary mixing, this process water steam gasification efficiency stability determines the key factor of water vapour content in simulated flue gas, and in most of experiments of measuring device, this point is all out in the cold.Simultaneously, in industrial process, flue-gas temperature is at 80-180 DEG C, and general experimental provision simulated flue gas does not arrange specific pre-heating system, flue-gas temperature just passes into reactor at normal temperature, and resulting through the burnt bed of material of reactor activity is possible temperature of reaction do not reach realistic simulation adsorption temp.
Activated coke absorbing unit is made up of heating unit and reactor two parts, because active coke desulphurizing adsorption temp is at 80-180 DEG C, therefore the heating unit of activated coke absorbing unit is less demanding to heating power, if adopt the structure type of furnaces such as conventional mullite, alumina silicate, experimental provision weight can be caused to increase, structure is not compact, installs complicated.Structure of reactor design adopts distribution grid as support and gas distributor usually, and simulated flue gas is imported and exported and is not optimized, and install more difficult, some experimental provision just exports also to be needed to carry out dismounting heating tape, causes the sample lay time long.
Flue gas composition detects needs extra flue gas analyzer to detect, all detect at entrance and exit, smoke inlet due to gas need not add filtration unit containing particle just can direct-detection, smoke outlet may contain particle due to gas, needs filtration unit.
The technical matters such as the experimental provision for the sulphuric dioxide adsorbance of current general mensuration activated coke in flue gas exists the quantitative out of true of water vapor, the special pre-heating system of shortage flue gas, heating arrangement complexity is heavy, detection system integrated level is low, prior art there is no effective solution.
Summary of the invention
The defect that the device that the present invention is directed to the sulphuric dioxide adsorbance of activated coke in flue gas in prior art exists, provides the automation equipment that a kind of continuity method measures activated coke sulphuric dioxide capacity.
Continuity method provided by the invention measures the device of activated coke sulphuric dioxide capacity, comprises flue gas mixing arrangement, steam generator, gas mixer and reaction tube, it is characterized in that:
Described flue gas mixing arrangement comprises premixed device;
Described steam generator comprises pump, gasifier and gas meter, and water enters gasifier gasification through pump;
Obtain combination gas after the gas of described premixed device outlet and the water vapor after gasifier gasification enter gas mixer, combination gas enters reaction tube through pipeline;
Arrange resistance wire and distribution grid in described reaction tube, mixer fully contacts with activated coke in reaction tube, and the combination gas after activated coke absorption discharges reaction tube.
Preferably, described premixed device is provided with several gas accesses.
Preferably, described pump is peristaltic pump or constant-flux pump.
Preferably, described reactor comprises reaction tube and lower reaction tube, and its material is quartz glass.
Preferably, the pipeline between described reaction tube and gas mixer comprises heating tube.
Preferably, described gas mixer inside arranges some dividing plates.
Preferably, described device also comprises detector, and described detector detects the combination gas after premixed device and activated coke absorption, and described detector comprises electrochemical sensor.
Preferably, the inside of described gas mixer arranges heater strip, or the outer setting heating pipe line of described mixer; Or the inside of described mixer arranges heater strip, the outer setting heating pipe line of described mixer.
In one embodiment of the invention, the automation equipment that its a kind of continuity method provided measures activated coke sulphuric dioxide capacity mainly comprises: mass flowmeter 1, peristaltic pump 2, premixed device 3, gasifier 4, solenoid valve 5, high-temperature rotor flowmeter 6, heated type mixer 7, heating muff 8, upper reaction tube 9, lower reaction tube 10, distribution grid 11, gold-plated resistance wire furnace 12, unloading valve 13, vacuum pump 14, thermopair 15, flow controller 16, detector 17, temperature controller 18, feedback regulator 19, ground interface 20; Its connected mode is: nitrogen, oxygen, sulphuric dioxide tentatively mix by entering premixed device 3 after mass flowmeter 1 accurate quantification, water carries out gasification formation water vapor by entering gasifier 4 after peristaltic pump 2 accurate quantification, water vapor enters heated type mixer 7 with the mixed gas from premixed device 3 and mixes after high-temperature rotor flowmeter 6, combination gas again process and thermal sleeve 8 successively through lower reaction tube 10, distribution grid 11, upper reaction tube 9, fully contact with activated coke in the reactor, the combination gas after activated coke absorption is discharged after vacuum pump 14.
Preferred as of above-described embodiment, premixed device 3 air intake opening can experimentally device increase in demand.
Preferred as of above-described embodiment, peristaltic pump 2 carries out replacing to constant-flux pump according to reaction unit pressure demand.
Preferred as of above-described embodiment, the unit components such as premixed device 3, gasifier 4, heated type mixer 7, upper reaction tube 9, lower reaction tube 10 can increase press detection sensor according to test analysis pressure demand.
Preferred as of above-described embodiment, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, and material is quartz glass, and interface adopts ground docking.
Preferred as of above-described embodiment, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, and material is stainless steel, and interface adopts screw thread docking.
Preferred as of above-described embodiment, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, actual installation process, and upper reaction tube 9 is fixed, and lower reaction tube 10 can be dismantled, conveniently assemble and disassemble activated coke.
Preferred as of above-described embodiment, heating muff 8 is corrugated bushing, can bend, to dock with lower reaction tube 10.
Preferred as of above-described embodiment, gold-plated resistance wire furnace 12 is the low-power heating type of furnace, and gold-plated outer cover can be replaced for common stainless steel outer cover.
Preferred as of above-described embodiment, detector 17 inside, by arranging solenoid valve hyperchannel, adopts a set of electrochemical sensor.
Preferred as of above-described embodiment, the Partial controll detecting units such as flow controller 16, detector 17, temperature controller 18, feedback regulator 19 are by integrated data card, and centralized displaying, at device screen, is present in computer docking communication interface.
Preferred as of above-described embodiment, after this device improves gasifier 4, heated type mixer 7, be applicable to other impurity class gas absorption saturating capacities such as industrial VOCs and measure.
Preferred as of above-described embodiment, gasifier 4 temperature is at 200-400 DEG C, and heated type mixer 7 temperature is at 300-400 DEG C, and heating muff 8 temperature is at 200-300 DEG C.
It is unstable that device of the present invention adopts the means such as counterbalance valve, steam-flow meter, bypass, feedback regulation to overcome water rear steam vapour amount; Adopt the heating of resistance wire shell-and-tube to formulate smoke pre-heating system, ensure that smoke pre-heating temperature-controllable is adjustable; Resistance wire directly heats, gold-plated reflex housing mode substitutes existing mullite, alumina silicate heating furnace in employing, solve the heavy difficult installation question of the existing type of furnace; Direct employing electrochemical sensor module, flush mounting is inner, integrated data converting system, shows in real time and data processing, and real realization is measured in real time, Real time visible.
There are the technical matters such as the quantitative out of true of water vapor, the special pre-heating system of shortage flue gas, the complicated heaviness of heating arrangement and detection system integrated level are low in the experimental provision that device of the present invention solves the sulphuric dioxide adsorbance of current general mensuration activated coke in flue gas, it has following beneficial effect:
1 water vapor is quantitatively accurate: the present invention feeds gauge water by quantitative peristaltic pump or constant flow pump, control the flow velocity of water, by becoming water vapor after gasifier, vapor flow is undertaken quantitatively by high-temperature vapor spinner-type flowmeter, and adopt the means such as infrared to carry out implementing monitoring, gasifier and flowmeter pipeline arrange counterbalance valve and by-pass valve, Coupled Feedback regulates program option, form the regulable control of various ways combination, reach and accurately control vapor flow object;
In 2 the present invention, multiple gases internal mixer arranges multiple separators, and after fully colliding baffling disturbance, gas through repeatedly mixing, thus ensures that in gas, each component is homogeneous.Water vapor at low temperatures can easily condensation, arranges heater strip at mixer External Internal or at outer setting heating pipe line, ensures water vapor not condensation.Therefore heated type mixer fully can realize gas and vapor permeation and preheating gas object.Meanwhile, between mixer and reactor, pipeline arranges heating tube, by regulating heating power, can realize ideal response temperature when mixed gas enters reactor and activated coke hybrid reaction;
Gold-plated resistance wire furnace in 3 the present invention is different with the alumina silicate type of furnace from traditional mullite, there is not the furnace wall of thicker heaviness, direct Resistant heating, and outer wall adopts gold-plated reflecting surface, compact conformation, light, is convenient to device integrated;
4 integrated levels are high: to adsorb sulphuric dioxide experimental provision different from common survey activated coke, and chemical sensor is directly coupled to reaction unit inside by the present invention, omits most of annex, and detection rates is fast, compact conformation.
The automation equipment that continuity method of the present invention measures activated coke sulphuric dioxide capacity can realize the volume automated mensuration of activated coke absorption sulphuric dioxide, there is the features such as smoke components composition is precise and stable, integrated level is high, convenient to operation, for the difficulty solving current activated coke adsorption capacity mensuration difficulty large, there is positive effect.
Accompanying drawing explanation
Fig. 1, a kind of continuity method measure the automation equipment process flow diagram of activated coke sulphuric dioxide capacity
The split figure of Fig. 2, reactor
Accompanying drawing identifies:
1, mass flowmeter; 2, peristaltic pump; 3, premixed device; 4, gasifier; 5, solenoid valve; 6, high-temperature rotor flowmeter; 7, heated type mixer; 8, heating muff; 9, upper reaction tube; 10, lower reaction tube; 11, distribution grid; 12, gold-plated resistance wire furnace; 13, unloading valve; 14, vacuum pump; 15, thermopair; 16, flow controller; 17, detector; 18, temperature controller; 19, feedback regulator; 20, ground interface.
Embodiment
The following is embodiments of the invention, it only uses explanation of the invention and and unrestricted.
See Fig. 1 and Fig. 2, the automation equipment that a kind of continuity method measures activated coke sulphuric dioxide capacity mainly comprises: mass flowmeter 1, peristaltic pump 2, premixed device 3, gasifier 4, solenoid valve 5, high-temperature rotor flowmeter 6, heated type mixer 7, heating muff 8, upper reaction tube 9, lower reaction tube 10, distribution grid 11, gold-plated resistance wire furnace 12, unloading valve 13, vacuum pump 14, thermopair 15, flow controller 16, detector 17, temperature controller 18, feedback regulator 19, ground interface 20; Its connected mode is: nitrogen, oxygen, sulphuric dioxide tentatively mix by entering premixed device 3 after mass flowmeter 1 accurate quantification, water carries out gasification formation water vapor by entering gasifier 4 after peristaltic pump 2 accurate quantification, water vapor enters heated type mixer 7 with the mixed gas from premixed device 3 and mixes after high-temperature rotor flowmeter 6, combination gas again process and thermal sleeve 8 successively through lower reaction tube 10, distribution grid 11, upper reaction tube 9, fully contact with activated coke in the reactor, the combination gas after activated coke absorption is discharged after vacuum pump 14.The Partial controll detecting units such as flow controller 16, detector 17, temperature controller 18, feedback regulator 19 are by integrated data card, and centralized displaying, at device screen, exists computer docking communication interface.
In said apparatus, optionally, premixed device 3 air intake opening can experimentally device increase in demand.
Preferred as of above-described embodiment, peristaltic pump 2 carries out replacing to constant-flux pump according to reaction unit pressure demand.
Preferred as of above-described embodiment, the unit components such as premixed device 3, gasifier 4, heated type mixer 7, upper reaction tube 9, lower reaction tube 10 can increase press detection sensor according to test analysis pressure demand.
Preferred as of above-described embodiment, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, and material is quartz glass, and interface adopts ground docking.
Preferred as of above-described embodiment, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, and material is stainless steel, and interface adopts screw thread docking.
Optionally, reactor is made up of split type upper reaction tube 9, lower reaction tube 10, actual installation process, and upper reaction tube 9 is fixed, and lower reaction tube 10 can be dismantled, conveniently assemble and disassemble activated coke.
Preferred as of above-described embodiment, heating muff 8 is corrugated bushing, can bend, to dock with lower reaction tube 10.
Preferred as of above-described embodiment, gold-plated resistance wire furnace 12 is the low-power heating type of furnace, and gold-plated outer cover can be replaced for common stainless steel outer cover.
Preferred as of above-described embodiment, detector 17 inside, by arranging solenoid valve hyperchannel, adopts a set of electrochemical sensor.
Preferred as of above-described embodiment, the Partial controll detecting units such as flow controller 16, detector 17, temperature controller 18, feedback regulator 19 are by integrated data card, and centralized displaying, at device screen, is present in computer docking communication interface.
Preferred as of above-described embodiment, after this device improves gasifier 4, heated type mixer 7, be applicable to other impurity class gas absorption saturating capacities such as industrial VOCs and measure.
Peristaltic pump 2 entrance changes the volatile type organics such as gasoline into, and the temperature for parts such as premixed device 3, gasifier 4, heated type mixers 7 is arranged to be reseted, and can carry out the mensuration of activated charcoal saturated extent of adsorption in the fields such as petroleum vapor recovery.
By regulating gas with various kind, gold-plated resistance wire furnace 12 temperature being set on resolution temperature 400-450 DEG C of activated coke, completing parse operation according to detector 17.
By regulating gas with various kind and changing detector 17 kind, the reaction detection that other have thermal distortion or absorption can be completed.
Claims (7)
1. continuity method measures a device for activated coke sulphuric dioxide capacity, comprises flue gas mixing arrangement, steam generator, gas mixer and reaction tube, it is characterized in that:
Described flue gas mixing arrangement comprises premixed device;
Described steam generator comprises pump, gasifier and gas meter, and water enters gasifier gasification through pump;
Obtain combination gas after the gas of described premixed device outlet and the water vapor after gasifier gasification enter gas mixer, combination gas enters reaction tube through pipeline;
Arrange resistance wire and distribution grid in described reaction tube, mixer fully contacts with activated coke in reaction tube, and the combination gas after activated coke absorption discharges reaction tube.
2. device according to claim 1, is characterized in that, described premixed device is provided with several gas accesses.
3. device according to claim 1, is characterized in that, described pump is peristaltic pump or constant-flux pump.
4. device according to claim 1, is characterized in that, described reactor comprises reaction tube and lower reaction tube, and its material is quartz glass.
5. device according to claim 1, is characterized in that, the pipeline between described reaction tube and gas mixer comprises heating tube.
6. device according to claim 1, is characterized in that, described gas mixer inside arranges some dividing plates.
7. device according to claim 1, is characterized in that, the inside of described gas mixer arranges heater strip, or the outer setting heating pipe line of described mixer; Or the inside of described mixer arranges heater strip, the outer setting heating pipe line of described mixer.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108872200A (en) * | 2017-05-08 | 2018-11-23 | 上海梅山钢铁股份有限公司 | A kind of detection method of coke surface absorption sulfur content |
| CN111189970A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Method for detecting absorption and elimination performance of hydrogen sulfide |
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