CN105158029A - On-line coke oven gas preprocessing system - Google Patents
On-line coke oven gas preprocessing system Download PDFInfo
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- CN105158029A CN105158029A CN201510535769.8A CN201510535769A CN105158029A CN 105158029 A CN105158029 A CN 105158029A CN 201510535769 A CN201510535769 A CN 201510535769A CN 105158029 A CN105158029 A CN 105158029A
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Abstract
The invention relates to an on-line coke oven gas preprocessing system which comprises a sampling device, a blow-off device, a washing device, a dehumidifying device and a filtering device. The sampling device is used for extracting sample gas from a process pipeline; the blow-off device arranged behind the sampling device is used for primary dewatering and pollution discharging to received gas; the washing device arranged behind the blow-off device is used for washing and cleaning the received sample gas; the dehumidifying device arranged behind the washing device is used for cooling and dehumidifying the received sample gas; and the filtering device, connected with the dehumidifying device and arranged at the back end of the dehumidifying device, is used for filtering impurities such as coke tar and sulfur in the received sample gas and used for final fine-filtration of the sample gas. Adverse influence to on-line analysis structure caused by impurities such as coke tar, naphthaline and water in gas can be avoided by the technical scheme utilizing the on-line coke oven gas preprocessing system.
Description
Technical field
The invention belongs to extraction-type gas analysis system technical field, relate to a kind of online coke-oven gas pretreatment system.
Background technology
In field of metallurgy, especially in iron and steel enterprise, often need to carry out on-line analysis to coal gas, coal gas particularly coke-oven gas often contains the composition such as tar gas, sulphur or sulfide, the bitter edible plant, steam, solid particulate matter, tar gas, sulphur or sulfide, steam when entering analyser because the temperature difference can become liquid and tar etc., and then contamination analysis instrument block gas piping and make it cisco unity malfunction, the bitter edible plant also can be separated out due to the reduction of temperature and is converted to solid particulate matter, and solid particulate matter also can contamination analysis instrument block gas piping; In addition, after sulphur or sulfide mix with water, just there is certain corrosivity, be easy to etchant gas pipeline and analyser components and parts, before gas enters analytical instrument, therefore have to pass through pre-service these compositions are removed.
Traditional online coke-oven gas caloric value instrument pretreatment system is usually by taking out the extraction of pump priming, sample gas is taken out through sampling probe, get rid of after most of moisture through water trap again, arrive water washing tank to wash, remove the impurity such as solid particulate matter, tar, naphthalene in sample gas, to filter through the essence of secondary filter from water washing tank sample gas out and send caloric value instrument analysis after the dewatering further of condenser.
But, traditional problem existing for online coke-oven gas caloric value instrument pretreatment system is: (1) system adopts common diaphragm pumping sampling gas, the air inlet/outlet of membrane pump is less, oarse-grained impurity easily accumulates in this, cause passage blockage, corrosive gas in sample gas also can corrode pumping diaphragm, makes it go bad, reduces it and take out the ability of drawing.Adopt water jet pumping sampling gas, although can avoid blocking to a certain extent, the water yield needed for injection is comparatively large, as discharge easily causes instrument to intake not in time.(2) adopt normal-temperature water to carry out washing, purifying to sample gas, because the temperature difference is little, the naphthalene in sample gas can not crystallization completely, poor effect.The naphthalene be not removed can because the pipeline of the reduction crystallization blocking condenser of temperature in follow-up condenser.(3) adopt electronic refrigerator cooling and dehumidifying, its refrigerating efficiency is lower, and owing to having helical element in electronic refrigerator, easily blocks.(4) adopt INVENTIONPaper filter, can not effectively filter sulphur or sulfide, and serviceable life is shorter, need often changes.(5) effective tar removing measure is not had.And the coke-oven gas caloric value instrument pretreatment system that other is employed new technology, the parts such as water cooler and chemical reaction pot need be configured, need to regularly replace chemical reagent simultaneously, the configuration of its pretreatment system is comparatively numerous and diverse, parts are more, expensive, and working service is inconvenient.
Therefore, how the pretreatment system for online coke-oven gas caloric value instrument can provide clean gas to be measured to become technical matters urgently to be resolved hurrily in this area.
Summary of the invention
In order to overcome the above-mentioned shortcoming of prior art, the invention provides a kind of online coke-oven gas pretreatment system
, itclean gas to be measured can be provided and safeguard that intensity is less.
The technical solution adopted for the present invention to solve the technical problems is: a kind of online coke-oven gas pretreatment system, by the sampler for draw samples gas from process duct, be positioned at after sampler and dewater and the blowdown apparatus of blowdown for carrying out one-level to received gas, be positioned at after blowdown apparatus for carrying out the water washing device of water washing cleaning to received sample gas, be arranged in after water washing device for entering the dehydrating unit of cooling and dehumidifying to received sample gas and being connected with dehydrating unit and being positioned at its rear end for filtering the impurity such as tar and sulphur of received sample gas, and sample gas is carried out to the filtration unit formation of final stage essence filtration.
Wherein sampler comprises steam jet pump, this steam jet pump is connected with the sampling feeler lever for sampling from the process pipe of side, an air intake valve is also provided with between steam jet pump and sampling feeler lever, an overheated steam pipe with steam valve is then connected with at the other end of steam jet pump, the lower end of steam jet pump is connected with the heat-insulation layer of a pipeline configuration, and is connected with blowdown apparatus by the valve of giving vent to anger of heat-insulation layer and heat-insulation layer lower end.
Described blowdown apparatus comprises being connected with upper end sampler removes the dividing plate of bulky grain thing and portion of water for the flow direction changing received sample gas, this dividing plate one end is connected with water washing device by blowdown apparatus air outlet valve, the dividing plate other end is then connected with blow-off pipe by the pipeline with blowoff valve, the other end of blow-off pipe is then connected with water sealed tank by water sealed tank blowoff valve, is separately connected with a heat exchange body while that water sealed tank being then connected with isolating cylinder by water washing tank overflow vent.
Be provided with water seal arrangement and water-sealed clapboard in described water sealed tank, it has a water seal overflow vent and is separately connected with blow-off pipe, is provided with a dehydrating unit blow-off pipe between this water sealed tank and heat exchange body heat-insulation layer.
Described water washing device comprises the water-jet pump be connected with blowdown apparatus, and the rising pipe of this water-jet pump is positioned at water washing tank, and above-mentioned water washing tank is separately connected with the heat exchange body in dehydrating unit.
Described water-jet pump has a water inlet pipe, and water inlet pipe is then provided with water filter and a water intaking valve.
Described dehydrating unit comprises a heat exchange body, and this heat exchange body is connected with a cooling cyclone, and this heat exchange body is separately connected with the filtration unit after dehydrating unit.
Described heat exchange body has one and takes into account a heat exchange body heat-insulation layer be arranged on outside heat exchange body for the temperature detecting described heat exchange body temperature.
Described cooling cyclone is provided with a gas outlet adjusting knob, cooling cyclone has a filtration regulator simultaneously, this filtration regulator is connected with compressed air hose and filters regulator make cooling cyclone obtain stable cooling cyclone to drive gas by adjusting, described cooling cyclone can adopt traditional cooling cyclone, as scroll refrigerant sampler disclosed in Chinese invention patent ZL200620071168.2, or cooling cyclone disclosed in Chinese invention patent CN200720082605.5.
Described filtration unit comprises two the filling material filtrators be up and down connected with heat exchange body, the rear end of two filling material filtrators then with the final filter filtering paper web is connected, two final filters are connected with caloric value instrument by T-valve and reduction valve, between final filter and T-valve, be wherein provided with No. 1 give vent to anger ball valve and No. 2 ball valve two ball valves of giving vent to anger of giving vent to anger, between filling material filtrator and the dehydrating unit of front end, be then provided with No. 1 air inlet ball valve and No. 2 air inlet ball valves two air inlet ball valves, be connected with a standard tracheae at T-valve place in addition.
Described filling material filtrator is made up of transparent cup, filling material and seal, and transparent cup central filler filling material, filling material order is from front to back filled to thin wire, felt, brown ocher and active carbon particle successively.
The invention has the beneficial effects as follows: have employed steam jet pump and sample gas is sampled, decrease the probability of sample gas line clogging, meanwhile, this pretreatment system is provided with blowdown apparatus and water washing device, can remove the most of dirt in sample gas preferably, in addition, this pretreatment system is also provided with the filtration unit of special needle to coke-oven gas, thus the gas relative clean being entered caloric value instrument by this pretreatment system can be guaranteed, and this pretreatment system has the filtration unit that online blowback is swept function and is provided with redundancy, safeguard relatively simple, safeguard that intensity is less, thus realize object of the present invention, technical scheme provided by the present invention is not limited in field of metallurgy field, but be applicable to the industrial occasions of the online calorimetry of multiple gases, as long as containing tar in gas, the impurity such as the bitter edible plant and moisture has adverse effect to on-line analysis structure, utilize technical scheme provided by the present invention just can solve this problem.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is filling material filter structure schematic representation.
In figure: caloric value instrument-130, process duct-155, sampling feeler lever-23, air intake valve-1, steam jet pump-21, steam valve-13, overheated steam pipe-24, heat-insulation layer-25, to give vent to anger valve-2, sampler-20, blowdown apparatus-30, dividing plate-32, blowoff valve-4, blowdown apparatus air outlet valve-3, water-jet pump-40, water filter-43, water intaking valve-44, water inlet pipe-114, water washing tank-51, water washing tank overflow vent-58, isolating cylinder-52, water washing device-50, heat exchange body-65, heat exchange body heat-insulation layer-61, thermometer-66, cooling cyclone-63, gas outlet adjusting knob-67, filter regulator-12, blow-off pipe-174, dehydrating unit-60, No. 1 air inlet ball valve-5, No. 2 air inlet ball valves-6, No. 1 ball valve-7 of giving vent to anger, No. 2 ball valves-8 of giving vent to anger, filling material filtrator-81, seal-83, transparent cup-84, filling material-85, final filter-90, filter paper web-91, filtration unit-80, T-valve-9, standard tracheae-104, reduction valve-10, water seal arrangement-70, water-sealed clapboard-72, water seal overflow vent-73, water sealed tank blowoff valve-11, water sealed tank-75, dehydrating unit blow-off pipe-164, compressed air hose-134, thin wire-811, felt-812, brown ocher-813, active carbon particle-814.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
See Fig. 1 and Fig. 2, a kind of online coke-oven gas pretreatment system, by the sampler 20 for draw samples gas from process duct 155, be positioned at sampler 20 to dewater and the blowdown apparatus 30 of blowdown for carrying out one-level to received gas below, be positioned at blowdown apparatus 30 below for carrying out the water washing device 50 of water washing cleaning to received sample gas, be arranged in the dehydrating unit 60 and with dehydrating unit 60 be connected of water washing device 50 below for entering cooling and dehumidifying to received sample gas and be positioned at its rear end for filtering the impurity such as the tar of received sample gas and sulphur, and to sample gas carry out final stage essence filter filtration unit 80 form.
Wherein sampler 20 comprises steam jet pump 21, this steam jet pump 21 is connected with the sampling feeler lever 23 for sampling from process duct 155 road of side, an air intake valve 1 is also provided with between steam jet pump 21 and sampling feeler lever 23, an overheated steam pipe 24 with steam valve 13 is then connected with at the other end of steam jet pump 21, the lower end of steam jet pump 21 is connected with the heat-insulation layer 25 of a pipeline configuration, and is connected with blowdown apparatus 30 by the valve 2 of giving vent to anger of heat-insulation layer 25 and heat-insulation layer 25 lower end.
Described blowdown apparatus 30 comprises being connected with upper end sampler 20 removes the dividing plate 32 of bulky grain thing and portion of water for the flow direction changing received sample gas, this dividing plate 32 one end is connected with water washing device 50 by blowdown apparatus air outlet valve 3, dividing plate 32 other end is then connected with blow-off pipe 174 by the pipeline with blowoff valve 4, the other end of blow-off pipe 174 is then connected with water sealed tank 75 by water sealed tank 75 blowoff valve 11, is separately connected with a heat exchange body 65 while that water sealed tank 75 being connected with isolating cylinder 52 by water washing tank overflow vent 58.
Be provided with water seal arrangement 70 and water-sealed clapboard 72 in described water sealed tank 75, it has a water seal overflow vent 73 and is separately connected with blow-off pipe 174, is provided with a dehydrating unit blow-off pipe 164 between this water sealed tank 75 and heat exchange body heat-insulation layer 61.
Described water washing device 50 comprises the water-jet pump 40 be connected with blowdown apparatus 30, and the rising pipe of this water-jet pump 40 is positioned at water washing tank 51, and above-mentioned water washing tank 51 is separately connected with the heat exchange body 65 in dehydrating unit 60.
Described water-jet pump 40 has a water inlet pipe 114, and water inlet pipe 114 is then provided with water filter 43 and a water intaking valve 44.
Described dehydrating unit 60 comprises a heat exchange body 65, and this heat exchange body 65 is connected with a cooling cyclone 63, and this heat exchange body 65 is separately connected with the filtration unit 80 after dehydrating unit 60.
Described heat exchange body 65 has one for detecting thermometer 66 and the heat exchange body heat-insulation layer 61 be arranged on outside heat exchange body 65 of described heat exchange body 65 temperature.
Described cooling cyclone 63 is provided with a gas outlet adjusting knob 67, cooling cyclone 63 has a filtration regulator 12 simultaneously, this filtration regulator 12 is connected with compressed air hose 134 and passes through to adjust and filters regulator 12 and make cooling cyclone 63 obtain stable cooling cyclone 63 to drive gas, described cooling cyclone 63 can adopt traditional cooling cyclone 63, as scroll refrigerant sampler 20 disclosed in Chinese invention patent ZL200620071168.2, or cooling cyclone 63 disclosed in Chinese invention patent CN200720082605.5.
Described filtration unit 80 comprises two filling material 85 filtrators 81 be up and down connected with heat exchange body 65, the rear end of two filling material 85 filtrators 81 then with the final filter 90 filtering paper web 91 is connected, two final filters 90 are connected with caloric value instrument 130 by T-valve 9 and reduction valve 10, between final filter 90 and T-valve 9, be wherein provided with No. 1 give vent to anger ball valve 7 and No. 2 ball valve 8 two ball valves of giving vent to anger of giving vent to anger, No. 1 air inlet ball valve 5 and No. 2 air inlet ball valves 6 two air inlet ball valves are then provided with between filling material 85 filtrator 81 and the dehydrating unit 60 of front end, a standard tracheae 104 is connected with in addition at T-valve 9 place.
Described filling material 85 filtrator 81 is made up of transparent cup 84, filling material 85 and seal 83, transparent cup 84 central filler filling material 85, filling material 85 order is from front to back filled to thin wire 811, felt 812, brown ocher 813 and active carbon particle 814 successively.
Present invention employs steam jet pump 21 pairs of sample gas to sample, decrease the probability of sample gas line clogging, meanwhile, this pretreatment system is provided with blowdown apparatus 30 and water washing device 50, can remove the most of dirt in sample gas preferably, in addition, this pretreatment system is also provided with the filtration unit 80 of special needle to coke-oven gas, thus the gas relative clean being entered caloric value instrument 130 by this pretreatment system can be guaranteed, and this pretreatment system has the filtration unit 80 that online blowback is swept function and is provided with redundancy, safeguard relatively simple, safeguard that intensity is less, thus realize object of the present invention, technical scheme provided by the present invention is not limited in field of metallurgy field, but be applicable to the industrial occasions of the online calorimetry of multiple gases, as long as containing tar in gas, the impurity such as the bitter edible plant and moisture has adverse effect to on-line analysis structure, utilize technical scheme provided by the present invention just can solve this problem.
Claims (10)
1. an online coke-oven gas pretreatment system, it is characterized in that: by the sampler for draw samples gas from process duct, be positioned at after sampler and dewater and the blowdown apparatus of blowdown for carrying out one-level to received gas, be positioned at after blowdown apparatus for carrying out the water washing device of water washing cleaning to received sample gas, be arranged in after water washing device for entering the dehydrating unit of cooling and dehumidifying to received sample gas and being connected with dehydrating unit and being positioned at its rear end for filtering the impurity such as tar and sulphur of received sample gas, and sample gas is carried out to the filtration unit formation of final stage essence filtration.
2. online coke-oven gas pretreatment system as claimed in claim 1, it is characterized in that: wherein sampler comprises steam jet pump, this steam jet pump is connected with the sampling feeler lever for sampling from the process pipe of side, an air intake valve is also provided with between steam jet pump and sampling feeler lever, an overheated steam pipe with steam valve is then connected with at the other end of steam jet pump, the lower end of steam jet pump is connected with the heat-insulation layer of a pipeline configuration, and is connected with blowdown apparatus by the valve of giving vent to anger of heat-insulation layer and heat-insulation layer lower end.
3. online coke-oven gas pretreatment system as claimed in claim 1, it is characterized in that: described blowdown apparatus comprises being connected with upper end sampler removes the dividing plate of bulky grain thing and portion of water for the flow direction changing received sample gas, this dividing plate one end is connected with water washing device by blowdown apparatus air outlet valve, the dividing plate other end is then connected with blow-off pipe by the pipeline with blowoff valve, the other end of blow-off pipe is then connected with water sealed tank by water sealed tank blowoff valve, is separately connected with a heat exchange body while that water sealed tank being then connected with isolating cylinder by water washing tank overflow vent.
4. online coke-oven gas pretreatment system as claimed in claim 3, it is characterized in that: in described water sealed tank, be provided with water seal arrangement and water-sealed clapboard, it has a water seal overflow vent and is separately connected with blow-off pipe, is provided with a dehydrating unit blow-off pipe between this water sealed tank and heat exchange body heat-insulation layer.
5. online coke-oven gas pretreatment system as claimed in claim 1, it is characterized in that: described water washing device comprises the water-jet pump be connected with blowdown apparatus, the rising pipe of this water-jet pump is positioned at water washing tank, and above-mentioned water washing tank is separately connected with the heat exchange body in dehydrating unit.
6. online coke-oven gas pretreatment system as claimed in claim 5, is characterized in that: described water-jet pump has a water inlet pipe, water inlet pipe is then provided with water filter and a water intaking valve.
7. online coke-oven gas pretreatment system as claimed in claim 1, it is characterized in that: described dehydrating unit comprises a heat exchange body, this heat exchange body is connected with a cooling cyclone, and this heat exchange body is separately connected with the filtration unit after dehydrating unit.
8. online coke-oven gas pretreatment system as claimed in claim 7, is characterized in that: described heat exchange body has one and takes into account a heat exchange body heat-insulation layer be arranged on outside heat exchange body for the temperature detecting described heat exchange body temperature.
9. online coke-oven gas pretreatment system as claimed in claim 7, it is characterized in that: described cooling cyclone is provided with a gas outlet adjusting knob, cooling cyclone has a filtration regulator simultaneously, this filtration regulator is connected with compressed air hose and filters regulator make cooling cyclone obtain stable cooling cyclone to drive gas by adjusting, described cooling cyclone can adopt traditional cooling cyclone, as scroll refrigerant sampler disclosed in Chinese invention patent ZL200620071168.2, or cooling cyclone disclosed in Chinese invention patent CN200720082605.5.
10. online coke-oven gas pretreatment system as claimed in claim 1, it is characterized in that: described filtration unit comprises two the filling material filtrators be up and down connected with heat exchange body, the rear end of two filling material filtrators then with the final filter filtering paper web is connected, two final filters are connected with caloric value instrument by T-valve and reduction valve, between final filter and T-valve, be wherein provided with No. 1 give vent to anger ball valve and No. 2 ball valve two ball valves of giving vent to anger of giving vent to anger, No. 1 air inlet ball valve and No. 2 air inlet ball valves two air inlet ball valves are then provided with between filling material filtrator and the dehydrating unit of front end, a standard tracheae is connected with in addition at T-valve place, filling material filtrator is by transparent cup, filling material and seal are formed, transparent cup central filler filling material, filling material order is from front to back filled to thin wire successively, felt, brown ocher and active carbon particle.
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| CN201510535769.8A CN105158029A (en) | 2015-08-28 | 2015-08-28 | On-line coke oven gas preprocessing system |
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| CN201510535769.8A CN105158029A (en) | 2015-08-28 | 2015-08-28 | On-line coke oven gas preprocessing system |
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| CN201510535769.8A Pending CN105158029A (en) | 2015-08-28 | 2015-08-28 | On-line coke oven gas preprocessing system |
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Cited By (2)
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| CN110018038A (en) * | 2019-05-22 | 2019-07-16 | 湖南千盟智能信息技术有限公司 | A kind of coke-stove gas ammonia on-line analysis pretreatment system and its application method |
| CN111944982A (en) * | 2020-09-15 | 2020-11-17 | 大连万通能源装备有限公司 | Novel energy-saving consumption-reducing continuous type cast tube annealing furnace system |
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