CN204063914U - A kind of have SCR denitration pilot experiment equipment that is dry and calcining function - Google Patents
A kind of have SCR denitration pilot experiment equipment that is dry and calcining function Download PDFInfo
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- CN204063914U CN204063914U CN201420496047.7U CN201420496047U CN204063914U CN 204063914 U CN204063914 U CN 204063914U CN 201420496047 U CN201420496047 U CN 201420496047U CN 204063914 U CN204063914 U CN 204063914U
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Abstract
The utility model discloses a kind of SCR denitration pilot experiment equipment with drying and calcining function, comprise stove body, be arranged at the intrinsic multiple independently circulating-heating unit of stove; Electric heating system, hot air circulation and aeration system and exhausting gas system is included in each circulating-heating unit, described electric heating system is arranged at the top of stove body, described hot air circulation and aeration system comprise the circulating fan be arranged on stove body, be arranged at the intrinsic circulation air path of stove, the ventilation blower be located at the fresh air airduct on stove body and be connected with fresh air airduct, described exhausting gas system is connected with circulation air path.The utility model have employed the dry structure be integrated with calcination function, can need the drying and the calcining in later stage that complete early stage respectively, have employed heated air circulation type heating simultaneously, greatly improve energy-saving effect according to technique.
Description
Technical field
The utility model relates to SCR denitration production technical field, and more particularly, particularly a kind of have SCR denitration pilot experiment equipment that is dry and calcining function.
Background technology
Due to mankind's activity and economic fast development, China's environment is seriously damaged, extreme climate showed increased, causes serious threat, cause heavy losses to country to people's life and property, hinders the sustainable development of national economy simultaneously.Country has also paid huge cost in order to Environment control.
The current discharged nitrous oxides total amount of China is more than 1,800 ten thousand tons, and if do not taked effective control measure, continuation increases by Future Ten 5 years Chinese nitrogen oxide emissions, may reach more than 3,000 ten thousand tons to the year two thousand twenty.And China is coal-fired big country, coal-burning power plant is the primary emission source of nitrogen oxide, accounts for 40% of total amount, will become the first batch of control object of country.
Honeycomb ceramics SCR denitration Main Function converts the NOX in discharging waste gas to nitrogen and steam, to reach environmental emission standard.
SCR device is primarily of two large main body compositions: remove agent preparation system and reactor body.By spraying into reactant NH3 in reactor, NOX is reduced to nitrogen.Because this reduction reaction is comparatively responsive to temperature, therefore catalyst need be added with intensified response activity, meet the temperature requirement of reaction.
Honeycomb fashion SCR denitration main component generally comprises nano-TiO
2, V
2o
5and WO
3.Shared by these three kinds of compositions, catalyst ratio is more than 95 ﹪, and TiO
2proportion is generally 80% ~ 85%.In order to meet production technology needs, ensureing easily extruded, also needing in addition to increase some mixture additives such as viscose glue and glass fibre to increase pug intensity and mobility, adjusting its physical property.Due to these compositions stir mixing rear mobility and plasticity poor, shaping difficulty is larger; Water holding capacity again due to product is poor, very easily atmospheric crack after shaping, therefore also higher to the production engineering specifications of dry kiln.Simultaneously due to a large amount of NH can be given off when this product is calcined
3, SO
3deng corrosive gas and compound hydrogen sulfate ammonia thereof, also easy in cooling too fast cracking after calcining.
Existing part R&D institution is seeking to take cordierite as the SCR denitration of base material, and this will reduce the price of SCR denitration greatly, to SCR denitration universal, administer atmospheric environment and have great significance.Therefore, a kind of pilot scale line of necessary research and development equipment, thinks that above-mentioned this test provides better dry and calcining platform.
Utility model content
The purpose of this utility model is to provide a kind of and has dry and calcining function and the SCR denitration pilot experiment equipment of good energy-conserving effect.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
There is a SCR denitration pilot experiment equipment that is dry and calcining function, comprise stove body, be arranged at the intrinsic multiple independently circulating-heating unit of stove; Electric heating system, hot air circulation and aeration system and exhausting gas system is included in each circulating-heating unit, described electric heating system is arranged at the top of stove body, described hot air circulation and aeration system comprise the circulating fan be arranged on stove body, be arranged at the intrinsic circulation air path of stove, the ventilation blower be located at the fresh air airduct on stove body and be connected with fresh air airduct, described exhausting gas system is connected with circulation air path.
Preferably, the controllable silicon heating module that described electric heating system comprises electric heater and is connected with electric heater, described electric heater is arranged on the furnace roof on circulation air path top.
Preferably, also comprise the temperature detecting unit be arranged in circulation air path, described temperature detecting unit is connected with controllable silicon heating module.
Preferably, described stove body comprises body of heater, is located at the wicket of body of heater side, the kiln car be located at the track on body of heater and be located on track.
Preferably, described body of heater comprises outside steelframe layer and the flame-proof thermal insulation material layer of inside.
Preferably, each independently circulating-heating unit also comprises the inner bag be located in body of heater, and described circulation air path is located at the outside of inner bag, and the top of described inner bag is arc plate structure, and its both sides are scroll casing type deflector structure.
Preferably, add bolt by high aluminum fiber blanket between the inner bag in described two adjacent circulating-heating unit to connect.
Preferably, described exhausting gas system comprises the exhaust emission pipe be communicated with circulation air path, is arranged at the emission fan on exhaust emission pipe and is arranged at the thiamines clean-up port on exhaust emission pipe.
Preferably, the length of described body of heater is 3 ~ 8m, and the inner width of described body of heater is 2 ~ 5m.
Compared with prior art, the utility model has the advantage of: the utility model have employed the dry structure be integrated with calcination function, can according to technique need complete respectively early stage drying and the calcining in later stage, have employed simultaneously heated air circulation type heating, greatly improve energy-saving effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the top view with the SCR denitration pilot experiment equipment of drying and calcining function described in the utility model.
Fig. 2 is the front view with the SCR denitration pilot experiment equipment of drying and calcining function described in the utility model.
Fig. 3 is the right view with the SCR denitration pilot experiment equipment of drying and calcining function described in the utility model.
Description of reference numerals: 1, wicket, 2, track, 3, kiln car, 4, SCR denitration product, 5, flame-proof thermal insulation material layer, 6, circulating fan, 7, circulation air path, 8, electric heater, 9, fresh air airduct, 10, exhaust emission pipe, 11, thiamines clean-up port.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Consult shown in Fig. 1-Fig. 3, the utility model provides a kind of and has SCR denitration pilot experiment equipment that is dry and calcining function, comprises stove body, is arranged at the intrinsic multiple independently circulating-heating unit of stove; Electric heating system 8, hot air circulation and aeration system and exhausting gas system is included in each circulating-heating unit, described electric heating system is arranged at the top of stove body, described hot air circulation and aeration system comprise the circulating fan 6 be arranged on stove body, be arranged at the intrinsic circulation air path 7 of stove, the ventilation blower be located at the fresh air airduct 9 on stove body and be connected with fresh air airduct 9, described exhausting gas system is connected with circulation air path 7.
Stove body in the utility model is the main part of heating material calcining, comprise body of heater, be located at the wicket 1 of body of heater side, the kiln car 3 be located at the track 2 on body of heater and be located on track 2, kiln car 3 can be placed a stainless steel metal bin, during use, SCR denitration product 4 is placed on stainless steel metal bin.
Concrete, described body of heater comprises outside steelframe layer and the flame-proof thermal insulation material layer 5 of inside; Wherein, outside steelframe layer adopts the manufacture of various quality carbon steel material; And the flame-proof thermal insulation material layer 5 of inside adopts the high-grade material composition of lightweight, as: light-weight refractory fiber folded piece, high alumina gather light ball brick, light-weight insulating brick etc., it has the advantage that accumulation of heat is little, thermal resistance is large, thermal shock resistance is good, effectively can reduce self caloric receptivity of body of heater, for to be rapidly heated and cooling provides precondition, and the stability of the repeated temperature-rise and temperature of whole equipment can be ensured, reach efficient, energy-conservation effect.
As preferably, flame-proof thermal insulation material layer 5 according to serviceability temperature at one's side and consider the current domestic class of resistance to material and and alleviate the factors such as weight of equipment, be designed to the full light fibre lamination layer structure that thermal conductivity factor is low, be specially: furnace roof and the thick alumina silicate fibre blanket of side wall apolegamy 250mm thick alumina silicate fibre folded piece+25mm; Furnace bottom (kiln car) considers carrying needs, adopts high-strength light fireproof insulation brick, and forms curved seal structure with furnace bottom side wall, effectively ensures the sealing in stove, reduces impact of leaking out; Further, design temperature >=1000 DEG C of flame-proof thermal insulation material layer 5, to ensure that equipment outside wall temperature reaches the technical indicator (general device external temperature :≤environment temperature+25 DEG C) of customer requirement.
As preferably, in the present embodiment, wicket 1 is one, i.e. single open-door structure, in order to ensure the sealing effectiveness of fire door local.
Concrete, the controllable silicon heating module (not shown) that the electric heating system 8 in the utility model comprises electric heater and is connected with electric heater, described electric heater is arranged on the furnace roof on circulation air path 7 top.
As preferably, the electric heater in the present embodiment adopts the movable electric heater be installed on furnace roof, and it facilitates maintenance and the replacing of equipment; Further, electric heater adopts Cr20Ni80 high-quality resistance wire, is enclosed within earthenware, ensures its high-temperature stability, and the resistance wire of this model adapts to the calcination atmosphere needs of SCR denitration product, has excellent corrosion resistance.
As preferably, the electric heater in the present embodiment is divided into 2 groups, is separately positioned on the furnace roof on circulation air path 7 top of each circulating-heating unit; Often organize heater by 6 independently heater form, the power of single heater is 10KW, and namely total electrical heating power is 2* (6*10KW)=120KW.
The utility model also comprises the temperature detecting unit (not shown) be arranged in circulation air path 7, described temperature detecting unit is connected with controllable silicon heating module, can be realized automatic rising and the reduction of temperature by controllable silicon heating module automatic control program design temperature section, and controllable silicon heating module also can be connected with overtemperature and owe warm alarm module.
Hot air circulation in the utility model and aeration system are core, determine quality and the production capacity of product together with it is supporting with electric heating system 8.The design principle of this system is: adopt uniform, Wind Volume Cycling hot-blast heating according to product performance, reaches even, rational temperature field, completes product and progressively heat up by the relevant physical reaction being dried to calcination process.
Wherein, secondary drying temperature: normal temperature to 100 DEG C, adopt electrical heating air to carry out cyclic drying, dry run does not need controlled humidity; Calcining adopts electrical heating air to carry out circulating-heating, is also divided into intensification section, constant temperature zone and temperature descending section, heating rate is 1 ~ 5 DEG C/min, constant temperature zone the highest 600 DEG C (calcining heat can adjust), rate of temperature fall 2 ~ 5 DEG C/min, mode of heating selects electrical heating.
Hot air circulation as described above and aeration system comprise the compositions such as circulating fan 6, circulation air path 7, fresh air airduct 9 and ventilation blower.
As preferably, the circulation air path 7 in the present embodiment adopts 316L material stainless steel welded shaping.
As preferably, two independently circulating-heating unit are provided with in the present embodiment, hot air circulation in each circulating-heating unit and the principle of aeration system are: the circulation canal 7 forming independence, opposing seal at each unit, circulating air is from the one-sided feeding in kiln car 3 top, extract out from stove offside after lateral penetration SCR denitration product 4, utilizing circulating fan 6 draft of furnace roof to form pressure reduction guides hot blast to penetrate material, fully and SCR denitration product 4 heat convection, the relevant physical reaction of product calcination process is completed.
In the utility model, each independently circulating-heating unit also comprises the inner bag (not shown) be located in body of heater, namely furnace interior bears the steel frame construction of high temperature and structure needs, described circulation air path 7 is located at the outside of inner bag, the top of described inner bag is set to arc plate structure according to gaseous fluid mechanics principle, can effectively lead to hot blast and reduce resistance, its both sides are scroll casing type deflector structure, circulated air is made to enter in stove by deflector through air channel, inner bag side air inlet and suction opeing arrange hot blast homogenizing plate, make its uniformity better.
As preferably, inner bag (not shown) in the present embodiment adopts 316L corrosion resistant plate and the welding of shaped steel air-tightness (circulation air path and inner bag side plate δ=3, liner top plate adopts 4mm), heat-insulating heat-preserving material between furnace shell and inner bag is alumina silicate fibre, be convenient to inner bag be heated backward surrounding expand; And add bolt with high aluminum fiber blanket between inner bag (module) in adjacent two circulating-heating unit and connect, and reach inner bag and seal completely, waste gas is not excessive.
As preferably, connection fixture between inner bag and outside steelframe is rational in infrastructure, form enough rigidity to ensure its stability under loading, and consider the interior outside expanded by heating inequality impact of steel simultaneously, adopt and fix with individual module center weld, the connector of both sides adopts slideable supporting construction, makes it expand to both sides and freely extends, absorbed by tapetum fibrosum between two unit, reach inner-tube structure and stablize.
As preferably, each circulating-heating unit adopts a circulating fan 6, and circulating fan 6 adopts the mutliblade centrifugal blower of resistant to elevated temperatures C formula transmission, blower fan model: RKT-6C; Power 5KW-4P, and adopt autogamy volute deflector, the impeller of circulating fan 6 and main shaft material divide 321 stainless steels (heatproof is not less than 700 DEG C), external rack is carbon steel, blower fan is placed in apparatus body top side portion (be built on the rock, produce without self-vibration and covibration), fan noise≤80dB, between circulating fan 6 and body of heater, beam is set, reduces vibrations and avoid the impact of expansion on structure.
As preferably, ventilation blower in the present embodiment adopts the oxygenation of VFC means finishing equipment in calcination process and cooling requirement, be specially: in calcination process, need to supplement fresh air in time, reaction is participated in supplement a certain amount of oxygen, make the working condition that product reaches required, meet it and reach certain Active pharmaceutical, this stage need oxygen amount little, suction by circulating fan 6 supplements automatically, supplement the cold air entered fully to mix with the circulating air in stove, and carry out temperature-compensating through electrical heating, reach the temperature requirement needed for calcining, avoid lowering the temperature to hot blast, phase after firing, adopt as required and blast relatively large cold wind and inner loop wind carries out hybrid cooling, then carry out evenly, fast cooling to product, effectively enhance productivity.The present embodiment arranges 1 at each circulating-heating unit (race way) respectively and sends into air port, supplemental oxygen ajutage is outside stove and penetrate kiln side wall heat-insulation layer, inlet port is arranged on circulating fan import department, fully mix with circulated air, and can suitably reduce circulating fan temperature, be conducive to equipment and normally run; Like this can supplemental oxygen, utilize again waste discharge wind-heat amount simultaneously, reach energy-saving effect.
Exhausting gas system in the utility model comprises the exhaust emission pipe 10 be communicated with circulation air path 7, is arranged at the emission fan on exhaust emission pipe 10 and is arranged at the thiamines clean-up port 11 on exhaust emission pipe 10.
The present embodiment arranges 1 at each circulating-heating unit (race way) each emission fan respectively, adopt VFC, and pressure detecting is set at fans entrance controls overall extracted amount, emission fan is placed in independently to combine on steelframe platform and (is built on the rock, produce without self-vibration and covibration), fan noise≤80dB.
Exhaust emission pipe 10 takes branch to extract out, gather discharge mode, waste gas wind house steward (DN300, stainless steel 304, thickness is 2mm coiled sheet system), export with 2 useless (tide) gas wind and short joint flange is set is connected, each outlet arranges manual adjustments valve to control each point extracted amount, exhaust emission pipe 10 is set to threeway form with exhaust column junction in stove, bottom is provided with dismountable clean-up port, and arrange and manually mix cold blast sliding valve, reasonable adjusting EGT, avoids the too high damage to blower fan of temperature.And at all high temperature pipes, all Surgery therapy is set, ensures temperature≤50 DEG C of pipeline outer wall; Whole ventilation system, needs control waste discharge extracted amount and send into air quantity quite, to ensure pressure balance in equipment;
The utility model also comprises the Programmable Logic Controller be connected with electric heating system 8, hot air circulation and the aeration system in each circulating-heating unit and exhausting gas system; Programmable Logic Controller adopts Siemens S7-300 PLC+Control System of Microcomputer composition; Control System of Microcomputer is controlled by temperature, air-blower control, pressure and flow detection, safeguard protection and other auxiliary control form; analog signal, the on-off model of collection in worksite enter PLC and microcomputer as required; by carrying out the control such as temperature, power respectively; and provide corresponding control signal to on-the-spot executing agency (frequency converter and SCR power regulating eqiupment etc.); carry out the action of relevant each system, ensured that complete equipment runs.
Because body of heater of the present utility model is divided into 2 circulating-heating unit (Ye Shi temperature control district), independently control, the heating of electric heater is controlled by thermocouple, Control System of Microcomputer, SCR power regulating eqiupment, thus reach control each district temperature, full stove temperature-control heat couple totally 2 (single core, K calibration), is located in the circulation air path after electrical heating, in stove, front and back end sets up 1 monitoring thermocouple separately, auxiliary display; Exhaust duct and oxygenation pipeline house steward arrange 1 temperature detection thermal resistance respectively, totally 2.
As preferably, the length of the body of heater in the present embodiment is 3 ~ 8m, and the inner width of described body of heater is 2 ~ 5m.
The utility model has the advantage of: have employed the dry structure be integrated with calcination function, can need according to technique the drying and the calcining in later stage that complete early stage respectively, have employed heated air circulation type heating simultaneously, greatly improve energy-saving effect.
Although describe embodiment of the present utility model by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection domain described by claim of the present utility model, all should within protection domain of the present utility model.
Claims (9)
1. there is a SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: comprise stove body, be arranged at the intrinsic multiple independently circulating-heating unit of stove; Electric heating system (8), hot air circulation and aeration system and exhausting gas system is included in each circulating-heating unit, described electric heating system is arranged at the top of stove body, described hot air circulation and aeration system comprise the circulating fan (6) be arranged on stove body, be arranged at the intrinsic circulation air path of stove (7), the ventilation blower be located at the fresh air airduct (9) on stove body and be connected with fresh air airduct (9), described exhausting gas system is connected with circulation air path (7).
2. according to claim 1 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: the controllable silicon heating module that described electric heating system (8) comprises electric heater and is connected with electric heater, described electric heater is arranged on the furnace roof on circulation air path (7) top.
3. according to claim 2 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: also comprise the temperature detecting unit be arranged in circulation air path (7), described temperature detecting unit is connected with controllable silicon heating module.
4. the SCR denitration pilot experiment equipment with drying and calcining function according to claims 1 to 3 any one, it is characterized in that: described stove body comprises body of heater, be located at the wicket (1) of body of heater side, the kiln car (3) be located at the track (2) on body of heater and be located on track (2).
5. according to claim 4 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: described body of heater comprises outside steelframe layer and the flame-proof thermal insulation material layer (5) of inside.
6. according to claim 4 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: each independently circulating-heating unit also comprises the inner bag be located in body of heater, described circulation air path (7) is located at the outside of inner bag, the top of described inner bag is arc plate structure, and its both sides are scroll casing type deflector structure.
7. according to claim 6 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: add bolt by a high aluminum fiber blanket between the inner bag in described two adjacent circulating-heating unit and connect.
8. according to claim 4 have SCR denitration pilot experiment equipment that is dry and calcining function, it is characterized in that: described exhausting gas system comprises the exhaust emission pipe (10) be communicated with circulation air path (7), be arranged at the emission fan on exhaust emission pipe (10), and be arranged at the thiamines clean-up port (11) on exhaust emission pipe (10).
9. according to claim 4 have SCR denitration pilot experiment equipment that is dry and calcining function, and it is characterized in that: the length of described body of heater is 3 ~ 8m, the inner width of described body of heater is 2 ~ 5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496047.7U CN204063914U (en) | 2014-08-29 | 2014-08-29 | A kind of have SCR denitration pilot experiment equipment that is dry and calcining function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420496047.7U CN204063914U (en) | 2014-08-29 | 2014-08-29 | A kind of have SCR denitration pilot experiment equipment that is dry and calcining function |
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| CN204063914U true CN204063914U (en) | 2014-12-31 |
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|---|---|---|---|
| CN201420496047.7U Expired - Fee Related CN204063914U (en) | 2014-08-29 | 2014-08-29 | A kind of have SCR denitration pilot experiment equipment that is dry and calcining function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126932A (en) * | 2015-08-19 | 2015-12-09 | 石家庄大丰炉业有限公司 | Catalyst regeneration furnace |
| CN109442986A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | SCR denitration high-efficient roasting equipment and its remodeling method |
-
2014
- 2014-08-29 CN CN201420496047.7U patent/CN204063914U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126932A (en) * | 2015-08-19 | 2015-12-09 | 石家庄大丰炉业有限公司 | Catalyst regeneration furnace |
| CN109442986A (en) * | 2018-12-26 | 2019-03-08 | 北京国电龙源环保工程有限公司 | SCR denitration high-efficient roasting equipment and its remodeling method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20210829 |