CN103983545A - Active coke sulfur dioxide adsorption rate testing device and method - Google Patents
Active coke sulfur dioxide adsorption rate testing device and method Download PDFInfo
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- CN103983545A CN103983545A CN201410247796.0A CN201410247796A CN103983545A CN 103983545 A CN103983545 A CN 103983545A CN 201410247796 A CN201410247796 A CN 201410247796A CN 103983545 A CN103983545 A CN 103983545A
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Abstract
The invention discloses an active coke sulfur dioxide adsorption rate testing device. The active coke sulfur dioxide adsorption rate testing device comprises an automatic gas distribution system, an automatic control display system, an automatic temperature control reaction furnace and various gas bottles. An active coke sulfur dioxide adsorption rate testing method comprises the following steps: 1, pretreating a granulated activated coke sample or directly selecting powdery activated coke; 2, carrying out a simulation test; 3, carrying out a probe test; 4, timing adsorbing after activated coke powder is added into a reaction chamber, and weighing to obtain the mass variation of the activated coke powder; and 5, repeating the steps until the test is completed, and then changing other factors for continuing the test. The testing device provided by the invention is small in size, is high in airtightness, is easy to detach, and is convenient for experiment operation. The invention establishes a means for evaluating the sulfur dioxide adsorption velocity of activated coke rapidly and intuitively, provides a detection index for evaluating the quality of activated coke for flue gas desulfurization, and is beneficial to rapid selection of activated coke according with parameters of a desulfurizing tower in the actual engineering application.
Description
Technical field
The invention belongs to air pollution control technique field, relate generally to for coal-fired plant flue gas recovery, pollutant removing, a particularly activated coke sulphuric dioxide rate of adsorption proving installation, also relates to the method for this device to test activated coke sulphuric dioxide rate of adsorption of a kind of use.
Background technology
Activated coke is a kind of comprehensive strength (withstand voltage, wear-resistant, shock-resistant) sorbing material that specific activity charcoal is high, specific surface area specific activity charcoal is little, it has overcome, and activated charcoal is expensive, physical strength is low, the shortcoming of easy pulverizing, has kept again activated charcoal to have advantages of stronger absorption property simultaneously.Environmental issue becomes increasingly conspicuous at present, dry desulfurization mode taking activated coke as adsorbent is constantly promoted, and the rate of adsorption of activated coke sulphuric dioxide can be checked activated coke absorption property fast, intuitively, also determining to a certain extent the volume construction of desulfurizer in engineering application simultaneously.
In recent years, both at home and abroad taking activated charcoal/Jiaozhuo as adsorbent, to carry out the research of gas phase, liquid phase adsorption innumerable, but great majority research all concentrates on the adsorption capacity aspect that characterizes activated charcoal, less to the research of rate of adsorption aspect.And in the research of the rate of adsorption, the aspects such as the main theoretical analysis around liquid phase adsorption speed and the rate of adsorption, are seldom seen in report about the research of activated charcoal/burnt sulphuric dioxide rate of adsorption.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of activated coke sulphuric dioxide rate of adsorption proving installation and method.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A kind of activated coke sulphuric dioxide rate of adsorption proving installation, comprises automatic gas distribution system, automatically controls display system, temperature automatically controlled reacting furnace and various gas cylinder.Wherein, described automatic gas distribution system comprises distribution module, humidification module and surely wet module; In described temperature automatically controlled reacting furnace, cloth air chamber and reaction chamber are set.Described gas cylinder, distribution module 1, humidification module 2, surely wet module 3, cloth air chamber 7 are pipeline connection; Distribution module 1, humidification module 2 and surely wet module 3 are electrically connected with the automatic display system 5 of controlling; Automatically controlling display system 5 is electrically connected with temperature automatically controlled reacting furnace 6.
Further, described cloth air chamber is made up of middle gas distribution pipe, two ends draft tube and escape pipe.Described two ends draft tube and escape pipe caliber are 6mm-15mm, and length is 400mm-1000mm; In the middle of described, gas distribution pipe caliber is 25mm-50mm, and length is 400mm-800mm, and described middle gas distribution pipe adopts taper thread sealing with two ends draft tube and escape pipe respectively.
Further, described reaction chamber length is 50mm-150mm, the sealing of two ends taper thread, built-in 100 order-300 eye mesh screens.
A method for activated coke sulphuric dioxide rate of adsorption test, utilizes described activated coke sulphuric dioxide rate of adsorption proving installation, comprises the steps:
Step 1: burnt seed activity sample is carried out to pre-service or directly adopts powdered activated coke;
Step 2: carry out simulation test: reach the critical flow velocity of fluidized state at the activated coke sample that judges of logical nitrogen situation only in reaction chamber, and flow velocity utilizes automatic display system to calculate the distribution situation of various gases in different tests process accordingly;
Step 3: carry out exploratory experiment: i.e. logical nitrogen only under critical flow velocity condition, and maintain 10-20min, the mass change of activated coke sample in observing response chamber, guarantees the omnidistance free of losses of activated coke opaque amount, avoids experimental error;
Step 4: start timing absorption after adding active coke powder in reaction chamber, then weigh, obtain the mass change of active coke powder;
Step 5: repeat above-mentioned steps, until then the off-test of this group changes other factors and continue test.
Further, the burnt sample of the seed activity in described step 1 is pretreated is the active coke powders of 40 order-120 object or directly adopts 40 order-120 object powdered activated cokes.
Further, the simulation test in described step 2, regulates air compressor, with the flow of 2L/min-5L/min, active coke powder is blown to fluidized state and is advisable.
Further, described simulated flue gas carries out distribution according to the ratio of sulphuric dioxide 0.01%-5%, oxygen 6%-20%, water vapor 3%-16%.
Further, the exploratory experiment in described step 3, carrier gas is nitrogen, and activated coke powder mass change amplitude can be thought free of losses within ± 0.0010g.
The quality of the active coke powder further, adding in described step 4 is 1-5g; Adsorption time is 5S-1000S.
Further, in described step 5, the specification of the concentration of sulphuric dioxide, adsorption time and active coke powder, can change.
Rate of adsorption v computing formula following [unit is mg/ (gmin)]:
Wherein: before and after Δ m-active coke powder adsorption, mass change is poor, the g of unit;
The quality of m-active coke powder, the g of unit;
T-adsorption time, the min of unit.
The beneficial effect of technique scheme of the present invention is as follows:
Activated coke sulphuric dioxide rate of adsorption proving installation volume of the present invention is little, leakproofness is high, quick detachable, facilitate experimental implementation, improve measuring accuracy.The present invention has set up a kind of means of fast, intuitively passing judgment on the activated coke sulphuric dioxide rate of adsorption, one that can become evaluation of flue gas activated coke for desulfuration quality height is detected index, contributes to desulfurizer to select to be applicable to fast the activated coke of its parameter in practical engineering application.Method of the present invention can also, by changing other factors, judge the influence degree of each factor to the activated coke sulphuric dioxide rate of adsorption.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is cloth air chamber schematic diagram of the present invention;
In figure, sequence number is: 1-distribution module, 2-humidification module 3-surely wet module
4-automatic gas distribution system 5-automatically control display system
6-temperature automatically controlled reacting furnace 7-cloth air chamber, 8-reaction chamber
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described.
As shown in Figure 1, a kind of activated coke sulphuric dioxide rate of adsorption proving installation, comprises automatic gas distribution system 4, automatically controls display system 5, temperature automatically controlled reacting furnace 6 and various gas cylinder; Wherein, described automatic gas distribution system 4 comprises distribution module 1, humidification module 2 and surely wet module 3; Cloth air chamber 7 and reaction chamber 8 are set in described temperature automatically controlled reacting furnace 6, and reaction chamber 8 is in cloth air chamber 7;
Described gas cylinder, distribution module 1, humidification module 2, surely wet module 3, cloth air chamber 7 are pipeline connection; Distribution module 1, humidification module 2 and surely wet module 3 are electrically connected with the automatic display system 5 of controlling; Automatically controlling display system 5 is electrically connected with temperature automatically controlled reacting furnace 6.
Embodiment 1:
First by certain activated coke sample abrasive dust to 40 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 40 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 2:
First by certain activated coke sample abrasive dust to 80 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 80 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 3:
First by certain activated coke sample abrasive dust to 120 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 120 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 4:
First by certain activated coke sample abrasive dust to 40 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 80ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 40 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 5:
First by certain activated coke sample abrasive dust to 80 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 80ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 80 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 6:
First by certain activated coke sample abrasive dust to 120 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 80ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 120 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 10min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 10min as the time interval, do altogether three groups of experiments.
Embodiment 7:
First by certain activated coke sample abrasive dust to 40 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 40 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 5min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 5min as the time interval, do altogether three groups of experiments.
Embodiment 8:
First by certain activated coke sample abrasive dust to 80 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 80 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 5min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 5min as the time interval, do altogether three groups of experiments.
Embodiment 9:
First by certain activated coke sample abrasive dust to 120 order, then in automatic gas distribution system 4, carry out simulation test, recording quantitative coke powder is blown to the needed air-flow of fluidized state is 4L/min, calculate based on this different distribution situations of other various gases in different tests process, be respectively sulphuric dioxide 40ml/min, water vapor 400ml/min, oxygen 400ml/min, residue carrier gas is nitrogen.In temperature automatically controlled reacting furnace 6, explore experiment, then carry out distribution according to various gas flows and temperature, after gas is stable, 120 orders, quality is about to the active coke powder of 3g and packs in rate of adsorption proving installation, after 5min upon adsorption, the mass change of active coke powder in meausring apparatus.After weighing, again in embedding device, taking 5min as the time interval, do altogether three groups of experiments.
Nine embodiment sulphuric dioxide rate of adsorption test results of table 1
The activated coke sulphuric dioxide rate of adsorption result of table 1 for recording by nine embodiment above.By proving installation provided by the invention and method of testing, can obtain safely, fast and easily the rate of adsorption of varigrained activated coke sample under the conditions such as different sulfur dioxide concentrations, different adsorption time, the rate of adsorption index of activated coke is made to accurate judge.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an activated coke sulphuric dioxide rate of adsorption proving installation, is characterized in that, comprises automatic gas distribution system (4), automatically controls display system (5), temperature automatically controlled reacting furnace (6) and various gas cylinder; Wherein,
Automatic gas distribution system (4) is for accurately making the each component of simulated flue gas reach prescribed concentration;
Automatically control display system (5) for showing in real time the instrument parameter of each section of equipment, such as temperature, humidity, gas number percent etc.;
Temperature automatically controlled reacting furnace (6) keeps steady temperature for experimentation;
Gas cylinder provides stable source of the gas for experimentation;
Described automatic gas distribution system (4) comprises distribution module (1), humidification module (2) and surely wet module (3); Cloth air chamber (7) and reaction chamber (8) are set in described temperature automatically controlled reacting furnace (6);
Described gas cylinder, distribution module (1), humidification module (2), surely wet module (3), cloth air chamber (7) are pipeline connection; Distribution module (1), humidification module (2) and surely wet module (3) are electrically connected with the automatic display system (5) of controlling; Automatically controlling display system (5) is electrically connected with temperature automatically controlled reacting furnace (6).
2. activated coke sulphuric dioxide rate of adsorption proving installation according to claim 1, it is characterized in that, described cloth air chamber (7) is made up of middle gas distribution pipe, two ends draft tube and escape pipe, and described two ends draft tube and escape pipe caliber are 6mm-15mm, and length is 400mm-1000mm; In the middle of described, gas distribution pipe caliber is 25mm-50mm, and length is 400mm-800mm, and described middle gas distribution pipe adopts taper thread sealing with two ends draft tube and escape pipe respectively.
3. activated coke sulphuric dioxide rate of adsorption proving installation according to claim 1, is characterized in that, described reaction chamber length is 50mm-150mm, the sealing of two ends taper thread, built-in 100 order-300 eye mesh screens.
4. a method for the activated coke sulphuric dioxide rate of adsorption test that utilizes the involved activated coke sulphuric dioxide rate of adsorption proving installation of one of claim 1 to 3 and carry out, is characterized in that, the method comprises the steps:
Step 1: burnt seed activity sample is carried out to pre-service or directly adopts powdered activated coke;
Step 2: carry out simulation test: reach the critical flow velocity of fluidized state at the activated coke sample that judges of logical nitrogen situation only in reaction chamber, and flow velocity utilizes automatic display system to calculate the distribution situation of various gases in different tests process accordingly;
Step 3: carry out exploratory experiment: i.e. logical nitrogen only under critical flow velocity condition, and maintain 10-20min, the mass change of activated coke sample in observing response chamber, guarantees the omnidistance free of losses of activated coke opaque amount, avoids experimental error;
Step 4: start timing absorption after adding active coke powder in reaction chamber, then weigh, obtain the mass change of active coke powder;
Step 5: repeat above-mentioned steps, until then the off-test of this group changes other factors and continue test.
5. the method for the activated coke sulphuric dioxide rate of adsorption according to claim 4 test, is characterized in that, the burnt sample of seed activity in described step 1 is pretreated to be the active coke powders of 40 order-120 object or directly to adopt 40 order-120 object powdered activated cokes.
6. the method for activated coke sulphuric dioxide rate of adsorption test according to claim 4, is characterized in that, the simulation test in described step 2 regulates air compressor, with the flow of 2L/min-5L/min, active coke powder is blown to fluidized state and is advisable.
7. the method for activated coke sulphuric dioxide rate of adsorption test according to claim 4, is characterized in that, described simulated flue gas carries out distribution according to the ratio of sulphuric dioxide 0.01%-5%, oxygen 6%-20%, water vapor 3%-16%.
8. the method for the activated coke sulphuric dioxide rate of adsorption according to claim 4 test, is characterized in that, the exploratory experiment in described step 3, and carrier gas is nitrogen, and activated coke powder mass change amplitude can be thought free of losses within ± 0.0010g.
9. the method for activated coke sulphuric dioxide rate of adsorption test according to claim 4, is characterized in that, the quality of the active coke powder adding in described step 4 is 1-5g; Adsorption time is 5S-1000S.
10. the method for activated coke sulphuric dioxide rate of adsorption test according to claim 4, is characterized in that, in described step 5, the specification of the concentration of sulphuric dioxide, adsorption time and active coke powder, can change.
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| CN108982279A (en) * | 2018-07-26 | 2018-12-11 | 山东大学 | A kind of coke breeze trace organic substance absorption property evaluation method and system based on air flow bed |
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