CN104492257B - A kind of smoke gas comprehensive treatment system - Google Patents
A kind of smoke gas comprehensive treatment system Download PDFInfo
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- CN104492257B CN104492257B CN201410763278.4A CN201410763278A CN104492257B CN 104492257 B CN104492257 B CN 104492257B CN 201410763278 A CN201410763278 A CN 201410763278A CN 104492257 B CN104492257 B CN 104492257B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of smoke gas comprehensive treatment system, including combustion catalysis oxidation unit, two grades of SCR catalytic oxidizing equipments and particulate matter acquisition equipment, described combustion catalysis oxidation unit includes combustion box, and the gas outlet of combustion box is connected with the gas approach of two grades of SCR catalytic oxidizing equipments; Described particulate matter acquisition equipment includes cleaner unit and Venturi tube scrubber, and the import of described cleaner unit is connected with the exhanst gas outlet of two grades of SCR catalytic oxidizing equipments, and the gas outlet of cleaner unit is connected with the import of Venturi scrubber. The smoke gas comprehensive treatment system of the present invention, can reach the purpose of dedusting, desulphurization and denitration simultaneously fast and efficiently; The pollutant such as nitrogen oxides, sulfur and oxysulfide, CO, HC, dust can be removed simultaneously, and the removal efficiency of pollutant is high, removal effect is good, and discharge gas meets country and industry standard; Non-secondary pollution, especially without secondarily polluted water, energy economy & environment is profitable, is suitable for popularization and application.
Description
Technical field
The invention belongs to fume treatment technical field, be specifically related to a kind of smoke gas comprehensive treatment system.
Background technology
Recently as the raising of people's environmental consciousness, air quality increasingly receives the concern of people. At present, atmosphere pollution mainly has oxysulfide, nitrogen oxides and dust pollution etc. According to statistics, in China's atmosphere pollution, the NOx source of more than 90% is in the combustion process of fossil fuel (such as coal, oil, natural gas etc.), and wherein 70% comes from burning of coal, and thermal power plant's coal for power generation account for the 70% of whole nation fire coal. NOx under effect of sunlight, is easily formed chemical fumes, insulting respiratory system after entering air, and NO still destroys one of atmospheric ozone layer and the precursor gas forming acid rain, destroys ecological environment. Therefore, the process that coal-burning power plant discharges flue gas obtains everybody attention.
Flue-gas denitrification method is divided into dry and wet two class, dry method selective catalysis reduction (SCR, SelectiveCatalyticReduction), SNCR (SNCR), non-selective catalytic reduction (NSCR), molecular sieve, active carbon adsorption, plasma ladder method and combined desulfurization denitrogenation method etc.; Wet method is respectively adopted water, acid, alkali absorption method, oxidative absorption method and absorption reducing process etc. Applying maximum in Practical Project is SCR (SCR) method.
The mechanism of SCR technique is NH3Under the effect of certain temperature and catalyst, selectively the NOx in flue gas is reduced to N2, it being simultaneously generated water, its reaction is as follows:
4NO+4NH3+O2→4N2+6H2O (I);
4NH3+2NO2+O2→3N2+6H2O (II);
NO2+NO+2NH3→2N2+3H2O(III)。
SCR catalyst is divided into noble metal catalyst, metal oxide catalyst and molecular sieve catalyst, and wherein metal-oxide is most widely used. That commonly use in coal-burning power plant is V2O5Catalyst, is that load is at anatase crystal TiO2On barium oxide, being aided with tungsten and molybdenum is promoter, generally makes cellular or spreads on ceramic dielectric.
Under normal circumstances, SCR denitration device includes the dress reactor of catalyst, storage tank and reducing agent injected system.Reducing agent is both with pressure obtains anhydrous liquid nitrogen, it is possible to be the ammonia (usual weight concentration is 25%) of normal pressure, or aqueous solution of urea (usual weight concentration is 40%). When adopting ammonia or during urea liquid, generally passed through to be arranged in conduit or slip-stream is obtained atomizer and is directly injected into exhaust gases passes. SCR reactor is usually the container of rectangle, and inside includes the multiple catalyst modules being placed on bracing frame. Owing to SCR denitration process byproducts is few, apparatus structure is simple, and denitration efficiency is high, reliable, it is simple to safeguard, once invest the plurality of advantages such as relatively low, obtain widespread commercial use.
Although current coal-burning power plant adopts SCR process unit that the process of discharge gas is achieved certain effect, but existing smoke processing system there is problems: desulfurization, dedusting and denitration often each individually carry out, smoke processing system volume is big, and floor space is big; The treatment effect discharged pollutants such as CO, HC etc. in flue gas is poor, or basic not process function to hydrocarbon, Hydrocarbon; The control of catalytic reaction temperature is poor, belong to opening, depend primarily on the temperature of discharge flue gas, cause catalyst life to lower during such temperature height, when temperature is low, cause catalyst to block; Temperature and reducing agent burden control is poor, when reducing agent makes consumption big, it is easy to cause NH3Overflowing, reducing agent makes consumption hour denitration effect difference; The NH that SCR system produces4HSO4(NH4)2SO4And the dust in flue gas is likely to cause inside reactor pickup, blocking, equipment cleans difficulty; Secondary pollution easily there is, especially water pollution problems.
Summary of the invention
It is an object of the invention to provide a kind of smoke gas comprehensive treatment system, solve existing smoke processing system desulfurization, dedusting and denitration and each individually carry out, the problem that occupation area of equipment is big.
In order to realize object above, the technical solution adopted in the present invention is:
A kind of smoke gas comprehensive treatment system, including combustion catalysis oxidation unit, two grades of SCR catalytic oxidizing equipments and particulate matter acquisition equipment, described combustion catalysis oxidation unit includes combustion box, described combustion box has gas approach, gas outlet and bottom discharging mouth, and the gas outlet of combustion box is connected with the gas approach of two grades of SCR catalytic oxidizing equipments; Described particulate matter acquisition equipment includes cleaner unit and Venturi tube scrubber, the import of described cleaner unit is connected with the exhanst gas outlet of two grades of SCR catalytic oxidizing equipments, the gas outlet of cleaner unit is connected with the import of Venturi scrubber, and described Venturi tube scrubber also has washings import, pure qi (oxygen) outlet and waste liquid outlet.
Described two grades of SCR catalytic oxidizing equipments include having the Venturi tube of gas approach, one stage catalyzing reaction chamber and have two grades of catalyst converters of exhanst gas outlet, the reducing agent tank being arranged over for holding SCR reducing agent of described Venturi tube, the outlet of described reducing agent tank is connected with the charging aperture of Venturi tube, is used for making Venturi tube pass through swabbing action and is sucked by SCR reducing agent; The discharge end of described Venturi tube is with for occurring the import of the one stage catalyzing reaction chamber of catalytic oxidation to be connected, and the outlet of described one stage catalyzing reaction chamber is connected with the import of two grades of catalyst converters; It is provided with the noble metal catalyst sintered meshwork for two grades of catalytic oxidations in described two grades of catalyst converters.
In described two grades of SCR catalytic oxidizing equipments, inside the discharge end of Venturi tube, it is provided with SCR catalyst.
In described two grades of SCR catalytic oxidizing equipments, inside the discharge end of Venturi tube, it is provided with ceramic heater, the surface attachment SCR catalyst of described ceramic heater.
Described two grades of SCR catalytic oxidizing equipments also include attemperating unit, and described attemperating unit includes control panel, heater and for providing the air pump of cryogenic gas. Described heater is ceramic heater. Along flow of flue gas direction, described primary heater is positioned on one stage catalyzing reaction chamber near the position of import; Described secondary heater is positioned on two grades of catalyst converters near the position of import.
Described heater includes the primary heater being located on one stage catalyzing reaction chamber and the secondary heater being located on two grades of catalyst converters, described control panel includes the first control panel being located on one stage catalyzing reaction chamber and the second control panel being located on two grades of catalyst converters, primary heater is controlled to connect by described first control panel by controller, and secondary heater is controlled to connect by described second control panel by controller.
Described Venturi tube is provided with temperature control air inlet, and described temperature control air inlet is connected with air pump; Air pump is controlled to connect by described first, second control panel by controller.
Described two grades of SCR catalytic oxidizing equipments also include blowback rinser, and described blowback rinser includes the air pump for providing purge gas.
The smoke outlet of described two grades of catalyst converters is provided with the Butterworth Hatch for making purge gas enter, described Butterworth Hatch be used for providing the air pump of purge gas to be connected; Being equipped with gas discharge outlet below described Venturi tube and one stage catalyzing reaction chamber, described gas discharge outlet is used for making purge gas discharge.
Described smoke gas comprehensive treatment system also includes biochemical retracting device, described biochemical retracting device includes the biochemical case for carrying out biochemical reaction, the bottom discharging mouth of described combustion box is connected with the import of biochemical case, and the waste liquid outlet of described Venturi tube scrubber is connected with the import of biochemical case.
Described biochemical retracting device also includes washing water tank, and the water out of described washing water tank is connected with the import of the washings import of Venturi tube scrubber, biochemical case respectively.
Described cleaner unit is cyclone dust extractor.
The smoke gas comprehensive treatment system of the present invention, during use, after flue gas enters combustion box, its contained S, SO2Generate solid-state SO3、SO4, C, CO in tail gas generate CO2; The SO of a part of solid-state3、SO4Due to action of gravity, enter in biochemical case by the bottom discharging mouth of combustion box, the SO of remainder3、SO4Two grades of SCR catalytic oxidizing equipments are entered, by two-stage catalytic oxidation, by the NO in flue gas with flue gasXProcess and generate N2And aqueous vapor, HC, the CO in flue gas is processed and generates CO2And H2O; Two grades of SCR catalytic oxidizing equipment expellant gas enter in cyclone dust extractor after filtering, and utilize centrifugal force that particulate matter etc. is caught collection, and the particulate matter of collection is discharged through the bottom discharging mouth of cyclone dust extractor; Washing in the gas entrance Venturi scrubber that cyclone dust extractor processes, clean gas is discharged through pure qi (oxygen) outlet, SO2、SO3、SO4And unnecessary NH3Gas meet water humidification after enter in biochemical case, with the SO from combustion box3、SO4It is mixed together reaction, generates (NH4)2SO4; (NH4)2SO4Solution is discharged via the discharge gate of biochemical case. (NH4)2SO4Solution can be expelled directly out or be used as fertilizer and reclaim, and is absent from the problem that water pollutes.
The smoke gas comprehensive treatment system of the present invention, during use, flue gas sequentially passes through combustion catalysis oxidation unit, two grades of SCR catalytic oxidizing equipments, particulate matter acquisition equipment and biochemical retracting device and carries out integrated treatment, can reach the purpose of dedusting, desulphurization and denitration fast and efficiently simultaneously;The pollutant such as nitrogen oxides, sulfur and oxysulfide, CO, HC, dust can be removed simultaneously, and the removal efficiency of pollutant is high, removal effect is good, and discharge gas meets country and industry standard; Non-secondary pollution, especially without secondarily polluted water, energy economy & environment is profitable, is suitable for popularization and application.
Further, in the smoke gas comprehensive treatment system of the present invention, two grades of SCR catalytic oxidizing equipments used include Venturi tube, one stage catalyzing reaction chamber and two grades of catalyst converters, flue gas enters Venturi tube, swabbing action is formed at venturi throat, realizing automatically extracting reducing agent function and mating reducing agent making the proportioning of consumption, the reducing agent simultaneously sucking throat is sufficiently mixed the one stage catalyzing reaction chamber of entrance with air inlet, occurs catalytic oxidation by NO inside one stage catalyzing reaction chamberXProcess and generate N2And aqueous vapor; Enter in two grades of catalyst converters through reacted gas, utilize the noble metal catalyst sintered meshwork containing the precious metal such as platinum, palladium, HC, the CO in flue gas is processed and generates CO2And H2O. The smoke gas comprehensive treatment system of the present invention adopts two grades of SCR catalytic oxidizing equipments, by two grades of catalytic oxidations, significantly reduces the amount of the pollutant such as CO, HC in discharge flue gas, and fume treatment efficiency is high, especially that coal-burning power plant's vent gas treatment is effective; Making whole system compact conformation, reduce the volume of smoke gas comprehensive treatment system greatly, decrease floor space, small investment, cost is low, is suitable for popularization and application.
Further, described two grades of SCR catalytic oxidizing equipments by being attached on Venturi tube discharge end inner ceramic heater by SCR catalyst, the temperature of one stage catalyzing reduction reaction is controlled, it is prevented that occur that during temperature height, catalyst life lowers, the problem that when temperature is low, catalyst blocks.
Further, described two grades of SCR catalytic oxidizing equipments, by the ceramic heater being arranged on one stage catalyzing reaction chamber and the temperature control air inlet being located in Venturi tube, control entrance gas temperature within one stage catalyzing reaction chamber at 420 DEG C～450 DEG C; Drop to 200～250 DEG C through reacted gas temperature, enter in two grades of catalyst converters; Gas in two grades of catalyst converters is made to carry out two grades of catalytic oxidations under being not less than the environment of 200 DEG C by the secondary heater being arranged on two grades of catalyst converters. SCR catalytic oxidation environmental Kuznets Curves in optimum temperature range, is improved the efficiency of catalytic oxidation by attemperating unit further, decreases NO in discharge gasX, the pollutant such as CO, HC content.
Further, in described two grades of SCR catalytic oxidizing equipments, air pump connects with Butterworth Hatch, purge gas can be provided to two grades of SCR catalytic oxidizing equipments, air-flow flows along the direction that flow of flue gas during with two grades of SCR catalytic oxidizing equipment normal operation is in opposite direction, pollutant in two grades of catalyst converters, one stage catalyzing oxidation case, Venturi tube are discharged by two floss holes, it is achieved blowback cleaning function, extend this device and the service life of whole smoke gas comprehensive treatment system further.
Accompanying drawing explanation
Fig. 1 be embodiment 1 smoke gas comprehensive treatment system in the structural representation of two grades of SCR catalytic oxidizing equipments;
Fig. 2 is the structural representation of the smoke gas comprehensive treatment system of embodiment 1;
Fig. 3 is the operation principle schematic diagram of the smoke gas comprehensive treatment system of embodiment 1.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
Embodiment 1
In the smoke gas comprehensive treatment system of the present embodiment, two grades of SCR catalytic oxidizing equipments used are as shown in Figure 1, including there is the Venturi tube 24 of gas approach, one stage catalyzing reaction chamber 26 and there are two grades of catalyst converters 27 of exhanst gas outlet, the gas approach place of described Venturi tube 24 is provided with imported valve 21, and the smoke outlet of two grades of catalyst converters 27 is provided with outlet valve 29;
The reducing agent tank 4 being arranged over for holding SCR reducing agent of described Venturi tube 24, the outlet at bottom of described reducing agent tank 4 is connected with the charging aperture of Venturi tube 24, is used for making Venturi tube 24 be sucked by SCR reducing agent by swabbing action and mix with flue gas; Ceramic heater it is provided with, the surface attachment SCR catalyst of described ceramic heater inside the discharge end of described Venturi tube 24; The discharge end of described Venturi tube 24 be used for occurring the import of one stage catalyzing reaction chamber 26 of catalytic oxidation to be connected, with the mixed flue gas of SCR reducing agent through the SCR catalyst within Venturi tube discharge end, in one stage catalyzing reaction chamber 26, there is catalytic oxidation; The outlet of described one stage catalyzing reaction chamber 26 is connected with the import of two grades of catalyst converters 27; It is provided with the noble metal catalyst sintered meshwork for two grades of catalytic oxidations in described two grades of catalyst converters 27, the wire side of described noble metal catalyst sintered meshwork is vertical with flow of flue gas direction, make the flue gas of two grades of catalyst converters 27 of entrance through noble metal catalyst sintered meshwork, thus there are two grades of catalytic oxidations;
Described two grades of SCR catalytic oxidizing equipments also include attemperating unit, and described attemperating unit includes controller, control panel 5, heater 6 and for providing the air pump 210 of cryogenic gas; Described heater 6 is ceramic heater, heater 6 includes the primary heater being located on one stage catalyzing reaction chamber 26 and the secondary heater being located on two grades of catalyst converters 27, described control panel 5 includes the first control panel being located on one stage catalyzing reaction chamber 26 and the second control panel being located on two grades of catalyst converters 27, heater 6 is controlled to connect (primary heater is controlled to connect by described first control panel by controller, and secondary heater is controlled to connect by described second control panel by controller) by described control panel 5 by controller; Described Venturi tube 24 is provided with temperature control air inlet 22, and described temperature control air inlet 22 is connected with air pump 210; Air pump 210 is controlled to connect by described control panel 5 by controller;
Described two grades of SCR catalytic oxidizing equipments also include blowback rinser, and described blowback rinser includes the air pump 210 (being same with the air pump of offer cryogenic gas) for providing purge gas; The smoke outlet of described two grades of catalyst converters 27 is provided with the Butterworth Hatch 28 for making purge gas enter, described Butterworth Hatch 28 is connected (exit of air pump 210 is provided with two-bit triplet valve 25, it is achieved connection with the Butterworth Hatch 28 of 22, two grades of catalyst converters 27 of temperature control air inlet of Venturi tube 24 and switching) with air pump 210; Being equipped with gas discharge outlet 23 below described Venturi tube 24 and one stage catalyzing reaction chamber 26, described gas discharge outlet 23 is used for making purge gas discharge.
Described two grades of SCR catalytic oxidizing equipments, including Venturi tube 24, one stage catalyzing reaction chamber 26 and two grades of catalyst converters 27, flue gas enters Venturi tube 24 through gas approach, swabbing action is formed at venturi throat, realize automatically extracting reducing agent function and mating reducing agent making the proportioning of consumption, the reducing agent simultaneously sucking throat is sufficiently mixed with air inlet, the SCR catalyst on ceramic heater it is attached to inside Venturi tube discharge end, enter one stage catalyzing reaction chamber 26, catalytic oxidation occurs inside one stage catalyzing reaction chamber 26; Ceramic heater within Venturi tube 24 discharge end, can control the temperature of one stage catalyzing oxidation reaction.
Meanwhile, by the ceramic heater being arranged on one stage catalyzing reaction chamber 26 and the temperature control air inlet 22 being located in Venturi tube 24, control entrance gas temperature within one stage catalyzing reaction chamber 26 at 420 DEG C～450 DEG C. Drop to 200～250 DEG C through reacted gas temperature, enter in two grades of catalyst converters 27, utilize the noble metal catalyst sintered meshwork containing the precious metal such as platinum, palladium, under being not less than the environment of 200 DEG C, HC, the CO in flue gas is processed and generate CO2And H2O。
The smoke gas comprehensive treatment system of the present embodiment, as shown in Figure 2, including combustion catalysis oxidation unit, above-mentioned two grades of SCR catalytic oxidizing equipments 2 and particulate matter acquisition equipment, described combustion catalysis oxidation unit includes combustion box 1, described combustion box 1 has gas approach 11, gas outlet and bottom discharging mouth, and the gas outlet of combustion box 1 is connected with the gas approach of the Venturi tube 24 in two grades of SCR catalytic oxidizing equipments 2; Described particulate matter acquisition equipment includes cyclone dust extractor 7 and Venturi tube scrubber 8, the import of described cyclone dust extractor 7 is connected with the exhanst gas outlet of two grades of catalyst converters 27 in two grades of SCR catalytic oxidizing equipments 2, the gas outlet of cyclone dust extractor 7 is connected with the import of Venturi scrubber 8, and the particulate matter collected can be discharged and be collected by the discharge gate of cyclone dust extractor 7; Described Venturi tube scrubber 8 also has washings import, pure qi (oxygen) outlet 12 and waste liquid outlet, and the clean gas after process exports 12 discharges from pure qi (oxygen);
Described smoke gas comprehensive treatment system also includes biochemical retracting device, described biochemical retracting device includes the biochemical case 10 for carrying out biochemical reaction and for holding the washing water tank 9 of washings, the described biochemical import of case 10 is connected with the bottom discharging mouth of combustion box 7, and the waste liquid outlet of described Venturi tube scrubber 8 is connected with the import of biochemical case 10; The water out of described washing water tank 9 is connected with the import of the washings import of Venturi tube scrubber 8, biochemical case 10 respectively; Described biochemical case 10 is additionally provided with discharge gate 13, is used for discharging biochemical reaction product;
Described smoke gas comprehensive treatment system also includes controlling device, described control device includes controller 3, heater 6 is controlled to connect by the control panel 5 in two grades of SCR catalytic oxidizing equipments by controller 3, and air pump 210 is controlled to connect by described control panel 5 by controller 3; Described controller 3 also controls to connect the attemperating unit of combustion box 1.
The smoke comprehensive of the present embodiment processes device, during use, as shown in Figure 3, flue gas (coal-burning power plant's tail gas) sequentially passes through combustion catalysis oxidation unit, two grades of SCR catalytic oxidizing equipments (double catalytic oxidation device), particulate matter acquisition equipment and biochemical retracting device and carries out integrated treatment, reaches the purpose of dedusting, desulphurization and denitration.
In conjunction with shown in Fig. 2 and Fig. 3, flue gas (coal-burning power plant's tail gas) is entered by the gas approach 11 of combustion box 1, and the temperature being controlled combustion box 1 by controller 3 is about 400 DEG C, S, the SO in tail gas2Generate solid-state SO3、SO4, C, CO in tail gas generate CO2; The SO of a part of solid-state3、SO4Due to action of gravity, enter in biochemical case 10 by the bottom discharging mouth of combustion box 1, mix generation H with the washings from washing water tank 92SO4; The SO of remainder3、SO4Two grades of SCR catalytic oxidizing equipments 2 are entered with flue gas.
Flue gas enters in Venturi tube 24 by imported valve 21, produce swabbing action to be sucked by the SCR reducing agent in reducing agent tank 4, mix through the discharge end in Venturi tube 24, the SCR catalyst on ceramic heater it is attached to inside Venturi tube discharge end, enter in one stage catalyzing reaction chamber 26, NOXCatalyzed oxidation reaction generates N2And aqueous vapor;Reacted gas enters in two grades of catalyst converters 27, utilizes the noble metal catalyst sintered meshwork such as platinum, palladium, and HC, CO catalytic oxidation treatment in tail gas is generated CO2And H2O; Tail gas after process is discharged by outlet valve 29.
One stage catalyzing reaction chamber 26 internal temperature control is at 420～450 DEG C, and when temperature is less than 420 DEG C, the first control panel controls primary heater by controller and heats to gas; When temperature is higher than 450 DEG C, the first control panel is controlled air pump 210 by controller and is inwardly blown cooling by the temperature control air inlet 22 in Venturi tube 24. Second control panel controls secondary heater by controller makes two grades of catalyst converter 27 internal temperatures be not less than 200 DEG C.
Two grades of SCR catalytic oxidizing equipments need after using a period of time to clean, and imported valve 21 and outlet valve 29 are closed, and regulate two-bit triplet valve 25 and make air pump 210 connect with Butterworth Hatch 28; Open air pump 210 and provide purge gas to Butterworth Hatch 28, air-flow flows along the direction that flow of flue gas during with two grades of SCR catalytic oxidizing equipment normal operation is in opposite direction, pollutant in two grades of catalyst converters 27, one stage catalyzing oxidation case 26, Venturi tube 24 are expelled in cyclone dust extractor dedusting by two floss holes 23, it is achieved reverse cleaning function.
Entering in cyclone dust extractor 7 after outlet valve 29 expellant gas filters, utilize centrifugal force that particulate matter etc. is caught collection, the particulate matter of collection is discharged through the bottom discharging mouth of cyclone dust extractor 7; The gas processed through cyclone dust extractor 7 enters in Venturi scrubber 8, by controller 3, Venturi scrubber 8 throat is sucked the water yield and is controlled, and the clean gas after washing exports 12 discharges, SO through pure qi (oxygen)2、SO3、SO4And unnecessary NH3Gas meet and enter after water in biochemical case 10, with the SO from combustion box 13、SO4It is mixed together reaction, generates (NH4)2SO4; (NH4)2SO4Solution is discharged via the discharge gate 13 of biochemical case 10.
Claims (10)
1. a smoke gas comprehensive treatment system, it is characterized in that: include combustion catalysis oxidation unit, two grades of SCR catalytic oxidizing equipments and particulate matter acquisition equipment, described combustion catalysis oxidation unit includes combustion box, described combustion box has gas approach, gas outlet and bottom discharging mouth, and the gas outlet of combustion box is connected with the gas approach of two grades of SCR catalytic oxidizing equipments; Described particulate matter acquisition equipment includes cleaner unit and Venturi tube scrubber, the import of described cleaner unit is connected with the exhanst gas outlet of two grades of SCR catalytic oxidizing equipments, the gas outlet of cleaner unit is connected with the import of Venturi scrubber, and described Venturi tube scrubber also has washings import, pure qi (oxygen) outlet and waste liquid outlet.
2. smoke gas comprehensive treatment system according to claim 1, it is characterized in that: described two grades of SCR catalytic oxidizing equipments include having the Venturi tube of gas approach, one stage catalyzing reaction chamber and have two grades of catalyst converters of exhanst gas outlet, the reducing agent tank being arranged over for holding SCR reducing agent of described Venturi tube, the outlet of described reducing agent tank is connected with the charging aperture of Venturi tube, is used for making Venturi tube pass through swabbing action and is sucked by SCR reducing agent; The discharge end of described Venturi tube is with for occurring the import of the one stage catalyzing reaction chamber of catalytic oxidation to be connected, and the outlet of described one stage catalyzing reaction chamber is connected with the import of two grades of catalyst converters; It is provided with the noble metal catalyst sintered meshwork for two grades of catalytic oxidations in described two grades of catalyst converters.
3. smoke gas comprehensive treatment system according to claim 2, it is characterised in that: in described two grades of SCR catalytic oxidizing equipments, inside the discharge end of Venturi tube, it is provided with ceramic heater, the surface attachment SCR catalyst of described ceramic heater.
4. the smoke gas comprehensive treatment system according to Claims 2 or 3, it is characterised in that: described two grades of SCR catalytic oxidizing equipments also include attemperating unit, and described attemperating unit includes control panel, heater and for providing the air pump of cryogenic gas.
5. smoke gas comprehensive treatment system according to claim 4, it is characterized in that: described heater includes the primary heater being located on one stage catalyzing reaction chamber and the secondary heater being located on two grades of catalyst converters, described control panel includes the first control panel being located on one stage catalyzing reaction chamber and the second control panel being located on two grades of catalyst converters, primary heater is controlled to connect by described first control panel by controller, and secondary heater is controlled to connect by described second control panel by controller.
6. smoke gas comprehensive treatment system according to claim 5, it is characterised in that: described Venturi tube is provided with temperature control air inlet, and described temperature control air inlet is connected with air pump; Air pump is controlled to connect by described first, second control panel by controller.
7. the smoke gas comprehensive treatment system according to Claims 2 or 3, it is characterised in that: described two grades of SCR catalytic oxidizing equipments also include blowback rinser, and described blowback rinser includes the air pump for providing purge gas.
8. smoke gas comprehensive treatment system according to claim 7, it is characterised in that: the smoke outlet of described two grades of catalyst converters is provided with the Butterworth Hatch for making purge gas enter, described Butterworth Hatch be used for providing the air pump of purge gas to be connected; Being equipped with gas discharge outlet below described Venturi tube and one stage catalyzing reaction chamber, described gas discharge outlet is used for making purge gas discharge.
9. the smoke gas comprehensive treatment system according to claim 1,6 or 8, it is characterized in that: described smoke gas comprehensive treatment system also includes biochemical retracting device, described biochemical retracting device includes the biochemical case for carrying out biochemical reaction, the bottom discharging mouth of described combustion box is connected with the import of biochemical case, and the waste liquid outlet of described Venturi tube scrubber is connected with the import of biochemical case.
10. smoke gas comprehensive treatment system according to claim 9, it is characterised in that: described biochemical retracting device also includes washing water tank, and the water out of described washing water tank is connected with the import of the washings import of Venturi tube scrubber, biochemical case respectively.
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| CN203437036U (en) * | 2013-09-12 | 2014-02-19 | 河北环科力创环境工程有限公司 | Sintering fume desulfurization and denitrification device |
| CN103657404A (en) * | 2013-12-06 | 2014-03-26 | 上海凯鸿环保工程有限公司 | Tail gas catalysis combustion treatment system |
| CN204338022U (en) * | 2014-12-12 | 2015-05-20 | 郑州光力科技股份有限公司 | Smoke gas comprehensive treatment system |
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2014
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Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: Power Polytron Technologies Inc Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: Zhengzhou GL Tech Company |
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