CN103471113B - The special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 - Google Patents
The special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 Download PDFInfo
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- CN103471113B CN103471113B CN201310454289.XA CN201310454289A CN103471113B CN 103471113 B CN103471113 B CN 103471113B CN 201310454289 A CN201310454289 A CN 201310454289A CN 103471113 B CN103471113 B CN 103471113B
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Abstract
The present invention relates to the special catalytic combustion bed of industrial volatile organic pollutants in a kind of PM2.5, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, heater is provided with in the body of heater that air intake port is corresponding, on catalyst bracket, catalyst layer is installed, sidewall of the furnace body is provided with thermocouple.The present invention effectively improves the thermal efficiency of catalytic combustion bed, reduces thermal losses, and during burning, in catalytic combustion bed, temperature is more even, improves efficiency of combustion and purifying rate.
Description
Technical field
The invention belongs to catalytic combustion bed field, the special catalytic combustion bed of industrial volatile organic pollutants in especially a kind of PM2.5.
Background technology
Along with the enhancing of people's environmental consciousness, atmosphere pollution is more and more subject to people and payes attention to, especially the frequent haze weather occurred recently, make the attention rate of PM2.5 higher, and industrial volatile organic pollutants is to the maximum pollutant of people's body harm in PM2.5, the maximum of current process industrial volatile organic pollutants are catalytic combustion beds, catalytic combustion bed makes building enclosure by heat resisting steel sheet material or industrial furnace building material usually, in its existing catalytic combustion bed structure, air inlet and air outlet are located at the two ends up and down of catalytic combustion bed, although existing structure can realize catalytic combustion, but there are the following problems: 1. the thermal losses of catalytic combustion pool furnace body structure own is large, recuperation of heat utilization ratio is lower, 2. non-uniform temperature in catalytic combustion pool furnace body structure, overall high in centre temperature, edge temperature is low, reduces industrial volatile organic pollutants efficiency of combustion, affects the purifying rate of catalytic combustion.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided industrial volatile organic pollutants in a kind of PM2.5 special catalytic combustion bed, this catalytic combustion bed structure arranges simple, that design science rationally, effectively the improves catalytic combustion bed thermal efficiency, reduce thermal losses, improve recuperation of heat utilization rate, during burning, in catalytic combustion bed, temperature is more even, improves efficiency of combustion and purifying rate.
The present invention solves its technical problem and is achieved through the following technical solutions:
The special catalytic combustion bed of industrial volatile organic pollutants in a kind of PM2.5, comprise airscoop shroud, body of heater and air leaving cover, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, it is evenly fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, heater is provided with in the body of heater that air intake port is corresponding, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, catalyst bracket is provided with in body of heater square on the heaters, on catalyst bracket, catalyst layer is installed, sidewall of the furnace body is provided with thermocouple.
And described air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
And described air intake duct is identical with the quantity of gas off-take and to be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board.
And, described airscoop shroud is provided with explosion-proof relief mouth.
And described inlet channel cross-sectional is long-pending to be greater than the long-pending or long-pending outlet channel cross-sections that equals of inlet channel cross-sectional of outlet channel cross-sections and to amass.
And the long-pending outlet channel cross-sections that is less than of described inlet channel cross-sectional amasss.
And described air intake duct adopts rectangular steel pipe and is arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater.
And, described body of heater peripheral board cross section be rectangle or square or circular, in body of heater coaming plate cross section be rectangle or square or circular.
And described heater is electric heating tube group.
And described inlet channel cross-sectional is rectangle or square or fan-shaped or circular or ring is fan-shaped, outlet channel cross-sections is rectangle or square or fan-shaped or circular or ring is fan-shaped.
Advantage of the present invention and beneficial effect are:
1, in this PM2.5, the special catalytic combustion bed of industrial volatile organic pollutants comprises airscoop shroud, body of heater and air leaving cover, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, it is evenly fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, this kind of over-over mode arranges air intake duct and gas off-take can realize the even air inlet of catalytic combustion bed bottom of furnace body surrounding, thus make the industrial volatile organic pollutants entering body of heater be attracted to the surface of cat ceramic carrier more uniformly, make body of heater combustion even, high-temperature gas after burning refluxes evenly downwards by gas off-take, make bottom of furnace body temperature-compensating even, overcome catalytic combustion pool furnace body centre temperature in prior art high, the shortcoming that temperature low heating in edge is uneven, improve efficiency of combustion and purifying rate.
2, in this PM2.5 industrial volatile organic pollutants special catalytic combustion bed in the middle part of the upper head plate of corresponding airscoop shroud import above be provided with air inlet kuppe, combustion gas kuppe is provided with on below in the middle part of upper head plate, heater is provided with in the body of heater that air intake port is corresponding, this heater is packed on body of heater peripheral board, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure, this kind of structural design can effectively realize even air inlet, homogenous combustion, burned VOCs gas uniform enters gas off-take, effective raising catalytic combustion bedside edge spot temperature, evenly discharge after entering into air leaving cover, high burning efficiency is realized and purifying rate lays the first stone for furnace binding.
3, in this PM2.5, in the special catalytic combustion bed of industrial volatile organic pollutants, heater adopts electric heating tube group except for except the preheating in early stage of catalysis flow process, be conducive in particular cases to the auxiliary heating of catalytic combustion bed, firing rate is fast, efficiency is high, be arranged on air intake port position, be conducive to Thorough combustion, improve purifying rate, thermocouple is installed in addition on sidewall of the furnace body and facilitates temperature monitoring in body of heater, improve security.
4, in this PM2.5, the special catalytic combustion bed of industrial volatile organic pollutants adopts over-over mode to arrange air intake duct and gas off-take, effectively performs to ultimate attainment by the recycling of catalytic combustion heat.Catalyst combustion reaction heat is utilized to carry out preheating to the gas entering catalytic combustion bed.This warm belongs to countercurrent flow, for the high temperature catalytic combustion tail gas flow through in the air flue formed by coaming plate in body of heater and body of heater peripheral board, belongs to following current heat exchange for the air-flow in catalytic combustion bed, gas in air intake duct is heated in three directions, and make heat exchange unit to greatest extent near thermal source, reduce heat loss, improve heat exchange efficiency, to ensure that catalytic combustion bed reaches catalysis initiation temperature at the stylish VOCs gas entered of normal combustion, contribute to maintaining that catalyticing combustion process is stable to carry out, reduce the dependence even broken away from auxiliary electrical heater.
5, the high-temperature tail gas that in this PM2.5, in the special catalytic combustion bed of industrial volatile organic pollutants, catalytic combustion produces is along gas off-take, namely body of heater wall is back to the process of catalytic combustion bed lower part outlet, back feeding heating is carried out to catalytic combustion bed fringe region, contribute to the maintenance of catalytic combustion bed ensemble temperature with even, catalytic combustion is impelled to be evenly distributed in whole catalytic combustion bed cross section, improve catalytic combustion purifying rate, and form benign cycle thus, be beneficial to catalytic combustion and carry out continually and steadily.
6, the air inlet kuppe in the special catalytic combustion bed of industrial volatile organic pollutants, upper head plate arranged in this PM2.5 and combustion gas kuppe are design for disassembly, facilitate the replacing of catalytic combustion pool furnace body inner catalyst, improve production efficiency.
7, in this PM2.5, in industrial volatile organic pollutants special catalytic combustion bed, air intake duct can be different from the quantity of gas off-take, also can be identical, the long-pending outlet channel cross-sections that can equal of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that also can be greater than of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that can also be less than of inlet channel cross-sectional amasss, determine the cross-section relation between different air intake ducts and gas off-take according to climate reasons, VOCs gas treatment amount and catalyst use amount, make it more adapt to the processing requirements of different situations.
8, in this PM2.5, in the special catalytic combustion bed of industrial volatile organic pollutants, air intake duct adopts rectangular steel pipe and to be arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater, this kind of patten's design effectively can reduce the welding deformation in equipment Manufacture Process and the thermal stress in equipment use process and thermal deformation, and reduce steel use amount, reduce construction costs, for energy-saving and cost-reducing new design, reach processing requirements completely.
9, in this PM2.5 in industrial volatile organic pollutants special catalytic combustion bed body of heater peripheral board cross section be rectangle or square or circular, in body of heater coaming plate cross section be rectangle or square or circular, inlet channel cross-sectional is rectangle or square or fan-shaped or circular or ring is fan-shaped, and outlet channel cross-sections is rectangle or square or fan-shaped or circular or ring is fan-shaped.This kind of Structural Transformation mainly adapts to difform catalytic combustion bed profile, facilitates the design of various situation.
10, the airscoop shroud in this PM2.5 in the special catalytic combustion bed of industrial volatile organic pollutants is provided with explosion-proof relief mouth, improves the security of catalytic combustion bed, prevent the generation of security incident.
11, the thermal efficiency that structural configuration of the present invention is simple, design science rationally, effectively improves catalytic combustion bed, reduces thermal losses, improves recuperation of heat utilization rate, and during burning, in catalytic combustion bed, temperature is more even, improves efficiency of combustion and purifying rate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is that the A-A of Fig. 2 is to sectional view;
Fig. 4 is the structural representation (omitting heater, heat-insulation layer, thermocouple and kuppe of giving vent to anger) of body of heater of the present invention;
Fig. 5 is that the B-B of Fig. 4 is to sectional view (omitting catalyst bracket and catalyst layer);
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the upward view of Fig. 5;
Fig. 8 is the stereogram (omitting heater, heat-insulation layer, thermocouple, kuppe, catalyst bracket and catalyst layer) of body of heater of the present invention.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
The special catalytic combustion bed of industrial volatile organic pollutants in a kind of PM2.5, comprise airscoop shroud 3, body of heater 5 and air leaving cover 9, furnace body outer wall corner is provided with bracing frame 11, airscoop shroud is provided with explosion-proof relief mouth 2, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, airscoop shroud upper end arranges gas feed 1, air leaving cover lower end arranges gas vent 10, body of heater comprises upper head plate 4 that body of heater peripheral board 22 and its upper end be fixedly mounted with and the bottom plate 8 that its lower end is fixedly mounted with, it is evenly fixed with heat-insulation layer 16 at body of heater peripheral board outer wall, coaming plate 23 in one body of heater is set in body of heater peripheral board, air intake duct 13 and gas off-take 20 is arranged alternately between coaming plate and body of heater peripheral board in body of heater, the import 24 of air intake duct is arranged on upper head plate, the outlet 21 of air intake duct to be arranged in bottom plate and body of heater between coaming plate, the import 12 of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet 25 of gas off-take is arranged on bottom plate, air inlet kuppe 14 is provided with above in the middle part of the upper head plate of corresponding airscoop shroud gas feed, combustion gas kuppe 15 is provided with on below in the middle part of upper head plate, heater 7 is provided with in the body of heater that air intake port is corresponding, this heater is packed on body of heater peripheral board, this heater is electric heating tube group, electric heating tube quantity can be determined according to actual conditions, kuppe 19 of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure.Be provided with catalyst bracket 18 in body of heater square on the heaters, catalyst layer 17 be installed on catalyst bracket, sidewall of the furnace body is provided with thermocouple 6.In the present embodiment, the quantity of thermocouple is three, be packed in the upper of sidewall of the furnace body respectively, in, lower three positions, air intake duct is identical with the quantity of gas off-take and to be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board, air intake duct also can not be identical with the quantity of gas off-take, described be arranged on the air intake duct being in opposite in body of heater between coaming plate with body of heater peripheral board and air intake duct can one by one corresponding or air intake duct and gas off-take corresponding one by one, air intake duct shown in the present embodiment accompanying drawing 8 and gas off-take quantity are 20 and are evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board, adopt the mode that air intake duct is corresponding one by one with gas off-take, the long-pending outlet channel cross-sections that can equal of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that also can be greater than of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that can also be less than of inlet channel cross-sectional amasss.Adopt rectangular steel pipe in order to the air intake duct in energy-saving and cost-reducing this catalytic combustion pool furnace body structure and to be arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater, body of heater peripheral board cross section be rectangle or square or circular, in body of heater coaming plate cross section be rectangle or square or circular, inlet channel cross-sectional is rectangle or square or fan-shaped or circular or ring is fan-shaped, and outlet channel cross-sections is rectangle or square or fan-shaped or circular or ring is fan-shaped.
The present invention in use VOCs gas passes into air inlet kuppe gas uniform from the import of airscoop shroud and flows to Fighter Inlet upper head plate, below inlet duct flow to catalytic combustion pool furnace body, the stop of chance bottom plate is turned back and is entered in catalytic combustion pool furnace body, aperture through heater and cat ceramic honeycomb substrate burns, the combustion gas kuppe of the inversion rectangular pyramid structure that the gas after burning meets below end plate evenly enters by the air intake duct rectangle steel tube wall of gas off-take both sides, the gas off-take that in body of heater peripheral board and body of heater, coaming plate surrounds, air leaving cover outlet is evenly flowed out through kuppe of giving vent to anger from gas off-take outlet.
Actual motion compliance test result of the present invention: this new catalytic burning bed furnace binding in actual use, after conventional preheating, passes into VOCs gas, after catalytic combustion occurs, cuts off electrical heating.Within the period that VOCs gas concentration meets minimum ignition concentration, realize self-sustaining burning completely, without any additional auxiliary thermal source, the catalyticing combustion process catalytic combustion bed tempertaure short time reaches 650 DEG C, most time maintains between 350 DEG C-450 DEG C, flameholding, fluctuates less.Three, catalytic combustion bed upper, middle and lower region temperature instrumentation reading is close, and uniformity of temperature profile is described, exit gas detects, and VOCs concentration, lower than 20ppm, illustrates that catalytic combustion purifying rate reaches desirable level.
Claims (10)
1. the special catalytic combustion bed of industrial volatile organic pollutants in a PM2.5, comprise airscoop shroud, body of heater and air leaving cover, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, it is characterized in that: be evenly fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, heater is provided with in the body of heater that air intake port is corresponding, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, catalyst bracket is provided with in body of heater square on the heaters, on catalyst bracket, catalyst layer is installed, sidewall of the furnace body is provided with thermocouple.
2. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, it is characterized in that: described air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
3. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, is characterized in that: described air intake duct is identical with the quantity of gas off-take and to be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board.
4. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, is characterized in that: described airscoop shroud is provided with explosion-proof relief mouth.
5. the special catalytic combustion bed of industrial volatile organic pollutants in the PM2.5 according to claim 1 or 3, is characterized in that: described inlet channel cross-sectional is long-pending to be greater than the long-pending or long-pending outlet channel cross-sections that equals of inlet channel cross-sectional of outlet channel cross-sections and to amass.
6. the special catalytic combustion bed of industrial volatile organic pollutants in the PM2.5 according to claim 1 or 3, is characterized in that: the long-pending outlet channel cross-sections that is less than of described inlet channel cross-sectional amasss.
7. the special catalytic combustion bed of industrial volatile organic pollutants in the PM2.5 according to claim 1 or 3, it is characterized in that: described air intake duct adopts rectangular steel pipe and is arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater.
8. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, is characterized in that: described body of heater peripheral board cross section is rectangle or circle, and in body of heater, coaming plate cross section is rectangle or circle.
9. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, is characterized in that: described heater is electric heating tube group.
10. the special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 according to claim 1, it is characterized in that: described inlet channel cross-sectional is rectangle or fan-shaped or circular or ring is fan-shaped, outlet channel cross-sections is rectangle or fan-shaped or circular or ring is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310454289.XA CN103471113B (en) | 2013-09-27 | 2013-09-27 | The special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310454289.XA CN103471113B (en) | 2013-09-27 | 2013-09-27 | The special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 |
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| Publication Number | Publication Date |
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| CN103471113A CN103471113A (en) | 2013-12-25 |
| CN103471113B true CN103471113B (en) | 2015-09-30 |
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| CN201310454289.XA Expired - Fee Related CN103471113B (en) | 2013-09-27 | 2013-09-27 | The special catalytic combustion bed of industrial volatile organic pollutants in PM2.5 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4444367C2 (en) * | 1994-12-14 | 1997-04-24 | Chemtec Leuna Ges Fuer Chemie | Fixed bed reactor for the continuous implementation of exothermic reactions |
| JP4637633B2 (en) * | 2005-03-31 | 2011-02-23 | アマノ株式会社 | Combustible VOC gas treatment equipment |
| CN2916400Y (en) * | 2006-02-27 | 2007-06-27 | 福建方明钢铁有限公司 | Color-coated exhaust gas catalytic combustion device for use in color steel production line |
| CN101275744B (en) * | 2007-03-28 | 2011-01-26 | 中国科学院大连化学物理研究所 | Apparatus for comprehensively utilizing coal mine to ventilate mash gas |
| CN201043752Y (en) * | 2007-04-17 | 2008-04-02 | 东莞泽龙线缆有限公司 | Catalytic combustor |
| CN203517824U (en) * | 2013-09-27 | 2014-04-02 | 天津赛智科技发展有限公司 | Catalytic combustion bed special for industrial volatile organic pollutants in PM2.5 |
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