CN205095811U - Catalyst roasting apparatus - Google Patents
Catalyst roasting apparatus Download PDFInfo
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- CN205095811U CN205095811U CN201520779264.1U CN201520779264U CN205095811U CN 205095811 U CN205095811 U CN 205095811U CN 201520779264 U CN201520779264 U CN 201520779264U CN 205095811 U CN205095811 U CN 205095811U
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- fan housing
- preheating part
- carrier
- cooling end
- equipment
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Abstract
The utility model provides a catalyst roasting apparatus can carry out gradient heating, constant temperature heating and gradient cooling to catalyst support in order, and it is even to be heated when ensureing the carrier heating, and calcination defect is not had in the carrier catalysis agent. Simultaneously, it is because of the main heat transfer mode of the calcination is the convection current, efficient, realized energy -conservation.
Description
Technical field
The utility model relates to a kind of catalyst preparation equipment, particularly relates to a kind of catalyst roasting apparatus.
Background technology
Because exhaust gas from diesel vehicle is to the adverse effect of environment and the mankind, China's environmental legislation has formulated stricter state four, state five standard.Therefore, diesel engine manufacturers and emission Heat & Control Pty Ltd. are just making great efforts to obtain sooner, the Diesel engine of more environmental protection, and this Diesel engine meets consumer by minimum expense, meets requirement the strictest under all operations condition.
SCR catalyst system is generally adopted to the purification style of bavin motor-vehicle tail-gas both at home and abroad, catalyst type diesel vehicle particle catches poly-device (CDPF), one in gasoline car four-way catalysts (GPF) system or two kinds of modes.What the core component catalyst of these two kinds of modes adopted is honeycomb ceramic carrier applies corresponding catalyst, then carries out the method for roasting.
The production of domestic and international catalyst is produced house and is generally adopted the inherent 500-550 DEG C of roasting coated catalysts ceramic monolith (hereinafter referred to as carrier) of roller bed type electric kiln.The principle that carrier calcination heats up comprises: carrier itself is from heat transfer outside to inside; Convection heat transfer' heat-transfer by convection between carrier hole; . hyperthermia radiation heat transfer in kiln.There is following speciality in carrier: density is low; Aperture is little; Porosity is large: mostly be 300 orders, 400 orders or higher; Hole wall is thin: mostly be less than 7 microns; Hole depth is large: mostly be 100,152mm or more than 200mm; Part kind is non-clear opening.Above speciality makes carrier be heated to there is following difficult point: (1) because of hole wall thin, conduction is little by heat unit conductive cross-section, is unfavorable for heat transfer; And being full of air in hole, air heat transfer is low is more unfavorable for heat transfer; (2) straight-through carrier is because aperture is little, hole depth, and it is large that convection heat transfer' heat-transfer by convection medium (hot-air) enters carrier vestibule resistance; And non-clear opening carrier convective media can only be passed through from carrier walls, convective resistance is larger; (3) because carrier hole wall is parallel to each other, the radiance of heat radiation, the non-parallel wall of antiradiation is low; Radiation direction high-temperature area is more again, causes radiation direction low temperature to need thermal treatment zone efficiency low.
And three kinds of heat transfer types all existing defects of the net belt type electric kiln baking modes adopted: (1) radiation: one of carrier ceramic honey comb characteristic is to temperature end radiation.First ceramic monolith crust warms up, antiradiation performance, and carrier structure determines an end face when being subject to thermal-radiating, only to temperature end radiation, has delayed the speed that temperature is conducted to ceramic monolith center (low-temperature space); (2) convection current: although have air-flow because of the reason of structure, the gas many stirring blower fan, in carrier surface flowing, can not pass completely through carrier and carry out convection heat transfer' heat-transfer by convection to carrier inside; A small amount of gas sprays into carrier hole, because of carrier back pressure resistance (carrier height more high back pressure is larger) factor, causes gas flow velocity in the hole of carrier slow, makes carrier inside temperature increase slowly; (3) conduct: the grid number of plies is too many, defines heat-insulation layer effect, and thermal conduction rate slowly.
Because above reason must cause in the roasting process of catalyst, be variant inside and outside the lifting of catalyst bed temperature, maximum difference can reach 343 DEG C.This phenomenon may cause several consequence: after (1) roasting, and the catalyst of carrier inside does not cook (activity does not reach requirement); (2) external catalyst burning, catalyst granules becomes large, and specific area reduces, active reduction; (3) crust of large-sized supports is caused to ftracture.
For the problems referred to above, usual solution comprises: reduce roasting speed, extends roasting time.But energy consumption will be caused like this to increase, make cost increase.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of catalyst roasting apparatus, for solving the problems existed in prior art.
For achieving the above object and other relevant objects, the utility model provides a kind of catalyst roasting apparatus, comprising: the preheating part connected in turn by conveyer, insulation portion and cooling end; Wherein,
Described preheating part comprises heating furnace and many group preheating part fan housings, and described preheating part fan housing entrance point is connected by pipeline with described heating furnace air outlet;
Described insulation portion is the confined space comprising heating member;
Described cooling end comprises blower fan and cooling end fan housing, and described cooling end fan housing entrance point is connected by pipeline with described fan outlet.
Preferably, described heating furnace is gas-fired heater.
Preferred further, described gas-fired heater has regenerator.
Preferably, the pipeline of described preheating part fan housing entrance point and described heating furnace air outlet is provided with booster fan.
Preferably, described heating member is electrothermal furnace.
Preferably, the described cooling end fan housing port of export connects described heating furnace by pipeline.
Preferably, described catalyst roasting apparatus also comprises exhaust gas processing device, and described exhaust gas processing device is connected with the described preheating part fan housing port of export.
Preferably, described preheating part fan housing entrance point and the described cooling end fan housing port of export are respectively equipped with pressure test device, for the pressure drop of test carrier.
As mentioned above, catalyst roasting apparatus of the present utility model, has following beneficial effect:
Adopt catalyst roasting apparatus described in the utility model, can carry out the cooling of gradient-heated, heated at constant temperature and gradient to catalyst carrier in turn, be heated evenly when guaranteeing that carrier heats, carried catalyst is without roasting defect.Meanwhile, the main heat transfer mode because of roasting is convection current, and efficiency is high, it is energy-conservation to achieve.
Accompanying drawing explanation
Fig. 1 is shown as catalyst roasting apparatus schematic diagram described in the utility model one embodiment.
Fig. 2 is shown as the enlarged drawing of preheating part in Fig. 1.
Fig. 3 is shown as the enlarged drawing in insulation portion in Fig. 1.
Fig. 4 is shown as the enlarged drawing of cooling end in Fig. 1.
Element numbers explanation
A preheating part
B insulation portion
C cooling end
1 carrier
2 catalyst carrier protective sleeves
3 preheating part fan housings
4 pipelines
5 booster fans
6 exhaust gas processing devices
7 chimneys
8 heating members
9 cooling end fan housings
10 gas-fired heaters
101 regenerator
11 burners
12 stepping conveyers
13 blower fans
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 4.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
Embodiment 1
Fig. 1 is shown as catalyst roasting apparatus schematic diagram described in the utility model one embodiment, and this equipment comprises the preheating part A, insulation portion B and the cooling end C that are connected in turn by stepping conveyer 12.
Described preheating part A comprises heating furnace and 5 groups of preheating part fan housings 3, and described preheating part fan housing 3 entrance point is connected by pipeline 4 with described heating furnace air outlet.
Again in an embodiment, described heating furnace is gas-fired heater 10, and described gas-fired heater 10 has regenerator 101, better can export the hot blast of constant temperature.
Again in an embodiment, the pipeline 4 of described preheating part fan housing 3 entrance point and described heating furnace air outlet is provided with booster fan 5.
Described insulation portion B is the confined space comprising heating member 8.
Again in an embodiment, described heating member 8 is electrothermal furnace.Because the heat energy of carrier own can not lose during electrothermal furnace roasting, only provide electric energy needed for the heat loss of electric heating furnace wall just can meet roasting technique requirement, and the sealed thermal insulating of electrothermal furnace own is good, heat waste is little, achieves energy-conservation.
Described cooling end C comprises blower fan 13 and cooling end fan housing, and described cooling end fan housing 9 entrance point is connected by pipeline 4 with described blower fan 13 air outlet.
Again in an embodiment, described cooling end fan housing 9 port of export connects described heating furnace by pipeline 4.During use, it is interior through adding heat utilization again that the hot exhaust gas that cooling end produces imports gas-fired heater 10, reduces exhaust emissions and realize energy-conservation.
Again in an embodiment, described catalyst roasting apparatus also comprises exhaust gas processing device 6, and described exhaust gas processing device 6 is connected with described preheating part fan housing 3 port of export, and the other end of exhaust gas processing device 6 is also connected with chimney 7, is used for the flue gas after emission treatment.
Again in an embodiment, described preheating part fan housing 3 entrance point and described cooling end fan housing 9 port of export are respectively equipped with pressure test device, for the pressure drop of test carrier.The situation of change of catalyst coat thickness can also be judged by the online drop measurement of carrier; When being applied to CDPF, GPF (gasoline car particle catches poly-device), cracking can also being judged whether, whether plug-hole mud come off.
Embodiment 2
The present embodiment provides a kind of catalyst method of roasting, adopts catalyst roasting apparatus described in embodiment 1, comprises the steps:
(1) the hot-air pre-heating temperature rise period: carrier 1 is placed on stepping conveyer; putting catalyst carrier protective sleeve 2, delivering in corresponding preheating part fan housing 3 (internal-and external diameter of preheating part fan housing 3 and the inside and outside through matching of catalyst carrier protective sleeve 2) through conveyer.The hot blast that heating furnace produces passes through pipeline 4 through the booster fan 5 of first group of preheating part fan housing 3 entrance point, all enter after completing convection current in carrier 1 hole, stepping is sent in next group preheating part fan housing 3 and is carried out staged heating again, until reach predetermined temperature, (predetermined temperature is determined according to catalyst type, usual optimum is 550 DEG C), realize leading directly to stepping gradient-heated mode roasting carrier with hot blast.
Again in an embodiment, the temperature difference between adjacent two gradients is 50-120 DEG C.
(2) electrical heat tracing section: carrier 1 sends into insulation portion through stepping conveyer 12, adopts Electric heating to carry out constant temperature calcining, after reaching the scheduled time, is sent to first group of cooling end fan housing 9 of cooling end.
(3) chilling temperature descending section: cold air passes through pipeline 4 through the blower fan 13 of first group of cooling end fan housing 9 entrance point, all enter after completing convection current in carrier 1 hole, stepping is sent in next group cooling end fan housing 9 and is carried out staged heating again, realizes leading directly to the stepping gradient type of cooling to carrier forced cooling with cold wind.
Again in an embodiment, the temperature difference between adjacent two gradients is 50-120 DEG C
Again in an embodiment, the hot exhaust gas that step (3) produces is recycled in the middle heating furnace of step (1) by pipeline 4.The heat energy of step (3) carrier own, by after replacing with cold air convection, reduces bed temperature, obtains clean hot-air.Hot-air is used for the combustion-supporting of gas-fired heater and is used for hot-air pre-heating section waste heat recycling through the intensification of heating furnace, achieves energy-conservation, decreases exhaust emissions simultaneously.
Adopt catalyst method of roasting described in the utility model and equipment, there is following beneficial effect:
1, the mode calcined catalyst adopting thermostatic hot-air straight-through, is heated evenly during carrier heating, ensure that carried catalyst is without roasting defect;
2, hot blast is through repeatedly circulating, and point temperature section, stepping gradient type heatable catalyst, because carrier is heated evenly unanimously, can not make carrier damage, and reduces the requirement to carrier base substrate while improving qualification rate;
3, the combustion gas with regenerator adds stove, the better hot blast exporting constant temperature, through adding heat utilization again in the hot exhaust gas remittance heating furnace 10 of chilling temperature-fall period generation simultaneously, reducing exhaust emissions and realizing energy-conservation;
4, the straight-through stepping gradient type of cooling is to carrier forced cooling, when ensure that carrier cools evenly, ensure that carrier is without cooling defect, installs pressure test device additional respectively at preheating part fan housing entrance point and the described cooling end fan housing port of export, the pressure drop of on-line measurement carrier, realizes production testing conllinear.
5, method and apparatus described in the utility model is particularly useful for the baking modes of CDPF, GPF catalyst.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (8)
1. a catalyst roasting apparatus, is characterized in that, comprising: the preheating part connected in turn by conveyer, insulation portion and cooling end; Wherein,
Described preheating part comprises heating furnace and many group preheating part fan housings, and described preheating part fan housing entrance point is connected by pipeline with described heating furnace air outlet;
Described insulation portion is the confined space comprising heating member;
Described cooling end comprises blower fan and cooling end fan housing, and described cooling end fan housing entrance point is connected by pipeline with described fan outlet.
2. equipment as claimed in claim 1, it is characterized in that, described heating furnace is gas-fired heater.
3. equipment as claimed in claim 2, it is characterized in that, described gas-fired heater has regenerator.
4. equipment as claimed in claim 1, it is characterized in that, the pipeline of described preheating part fan housing entrance point and described heating furnace air outlet is provided with booster fan.
5. equipment as claimed in claim 1, it is characterized in that, described heating member is electrothermal furnace.
6. equipment as claimed in claim 1, it is characterized in that, the described cooling end fan housing port of export connects described heating furnace by pipeline.
7. equipment as claimed in claim 1, it is characterized in that, described catalyst roasting apparatus also comprises exhaust gas processing device, and described exhaust gas processing device is connected with the described preheating part fan housing port of export.
8. equipment as claimed in claim 1, it is characterized in that, described preheating part fan housing entrance point and the described cooling end fan housing port of export are respectively equipped with pressure test device, for the pressure drop of test carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779264.1U CN205095811U (en) | 2015-10-09 | 2015-10-09 | Catalyst roasting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520779264.1U CN205095811U (en) | 2015-10-09 | 2015-10-09 | Catalyst roasting apparatus |
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| CN205095811U true CN205095811U (en) | 2016-03-23 |
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| CN201520779264.1U Active CN205095811U (en) | 2015-10-09 | 2015-10-09 | Catalyst roasting apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170197A (en) * | 2015-10-09 | 2015-12-23 | 山东奥福环保科技股份有限公司 | Catalyst calcinating method and calcinating equipment |
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2015
- 2015-10-09 CN CN201520779264.1U patent/CN205095811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105170197A (en) * | 2015-10-09 | 2015-12-23 | 山东奥福环保科技股份有限公司 | Catalyst calcinating method and calcinating equipment |
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