CN203244956U - Fluidized bed reactor - Google Patents
Fluidized bed reactor Download PDFInfo
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- CN203244956U CN203244956U CN 201320119837 CN201320119837U CN203244956U CN 203244956 U CN203244956 U CN 203244956U CN 201320119837 CN201320119837 CN 201320119837 CN 201320119837 U CN201320119837 U CN 201320119837U CN 203244956 U CN203244956 U CN 203244956U
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- fluid bed
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Abstract
The utility model discloses a fluidized bed reactor which comprises a fluidized bed body, a sand inlet channel, an exhaust channel, a gas inlet, a sand outlet and an air nozzle, wherein the exhaust channel is arranged at the upper end of the fluidized bed body, the sand inlet channel is arranged on the exhaust channel and is straight to the inside of the fluidized bed body; the sand outlet is formed in the lower end of the fluidized bed body; the gas inlet is formed in one side of the fluidized bed body; the air nozzle is arranged inside the fluidized bed body and comprises a combustion air nozzle and an air distribution cover which is arranged on the combustion air nozzle and provided with air vents. The fluidized bed reactor is low in energy consumption and reduces cost.
Description
Technical field
The utility model relates to a kind of stove fire-proofing, particularly relates to a kind of fluidized-bed reactor.
Background technology
China is maximum in the world castings production state at present, and annual foundry goods total output is above 3,200 ten thousand tons.According to statistics, 1 ton of cast product of every production need discharge 1 ton of antiquated sand, increases simultaneously 1 ton of fresh sand.The casting factory solid waste discharge present situation of China is that the discharge capacity of waste and old casting model powder accounts for more than 70% of total release.The magnitude of recruitment of China's foundiy industry fresh sand is about the fresh sand magnitude of recruitment of 10% to 20%(Small Foundry up to more than 40%), compare (the fresh sand magnitude of recruitment only accounts for 5%) with developed countries such as Japan, gap is huge.
The cast used sand discharge capacity is excessive, and the consequence that causes is: producing cost improves, and the fresh sand wasting of resources is large, and environmental pollution is serious.
The effective way that reduces casting model powder consumption, the waste and old casting model powder discharge capacity of reduction is that old sand is carried out regeneration.
Casting model powder has several large classes such as clay-bonded sand, water-glass sand, coated sand and resin self-setting sand.Hot regeneration techniques for be the regeneration of coated sand and resin self-setting sand.
The hot regeneration techniques of waste and old casting model powder with fragmentation and removing impurities after, contain organic waste sand and add roaster, remove organic residue and a kind of method of being regenerated.Heat treatment temperature during regeneration is in 600 ℃～700 ℃ scopes.Fluidized-bed reactor is the common hot regenerating unit of waste and old casting model powder, is the nucleus equipment of hot regeneration techniques system.
When the typical stream fluidized bed reactor is used for waste and old casting model powder heat regeneration, in general more Ministry Of Fuel And Power power need be consumed and high regeneration efficiency could be realized, except adding q.s, the sufficiently high plant air of flow velocity, the heat loss (introducing the sensible heat loss that nitrogen causes because of combustion air in the flue gas of final discharging) that causes because of a large amount of nitrogen compositions that contain in the combustion air is comparatively remarkable, and further improved necessity and possibility are arranged.
The utility model content
The purpose of this utility model is to provide the fluidized-bed reactor that a kind of energy consumption is low, cost is little.
The technical scheme that addresses the above problem is: fluidized-bed reactor, comprise: the fluid bed body, sand filling passageway, the exhaust passage, air inlet, sand export, air nozzle, the upper end of described fluid bed body is located in described exhaust passage, described sand filling passageway is located on the described exhaust passage, through to described fluid bed body interior, the lower end of described fluid bed body is provided with sand export, described air inlet is located at a side of described fluid bed body, described air nozzle is located at described fluid bed body interior, described air nozzle comprises: the combustion air nozzle, the air-distribution cover, described air-distribution covers on the described combustion air nozzle, described air-distribution cover is provided with passage, is filled with oxygen-enriched air in the described air inlet.
Described passage is uniformly distributed on the described air-distribution cover.
The utility model has the advantage of at the air-distribution cover passage to be set so that gas flows out directly burning from airhood that divide sheet not establish passage compared to conventional air, the utility model is so that gas combustion is more abundant.Adopt oxygen-enriched air as after the combustion air, the consumption of fuel (take natural gas as example) will significantly reduce.Through measuring and calculating and experiment, when adopting normal air to be combustion air, the 1 ton of old resin air-set mold casting model powder (moisture content is in 5%) of regenerating needs mean consumption 52.5Nm
3Natural gas, the phase application quantity of normal air is 609.1Nm
3Be 28% oxygen-enriched air when doing combustion air when adopting oxygen concentration, the natural gas of the required consumption of the 1 ton of old resin air-set mold casting model powder of regenerate (equally moisture 5%) significantly is reduced to 31.2Nm
3(natural gas saving rate reaches 41%), fuel is cut down the effect highly significant.When adopting oxygen-enriched air to do combustion air, reduced the invalid nitrogen total amount that combustion air enters fluidized-bed reactor, so that the corresponding minimizing of follow-up discharge amount of exhaust gas.According to measuring and calculating and actual testing result, be that 35% oxygen-enriched air is when doing combustion air when adopting oxygen content, toxic emission total amount when the total emission volumn of follow-up waste gas is done combustion air than the employing normal air reduces 20% to 25%, can make so follow-up emission-control equipment (plant air and high-temperature tail gas heat-exchanger rig, smoke induced draught fan etc.) and the scale of combustion fan all be able to corresponding reducing, rated power reduces, and produces thus significant power savings.The remarkable decline of fuel and power consumption is so that the regeneration cost of waste and old casting model powder also significantly reduces.According to results of measuring, adopt oxygen-enriched air to do waste and old casting model powder and regenerate when using the combustion air of fluidized-bed reactor, regeneration cost can reduce by 15% to 30% on year-on-year basis.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model schematic diagram;
Fig. 2 is the utility model air nozzle schematic diagram;
Fig. 3 is the utility model air nozzle top view.
The specific embodiment
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the utility model, does not consist of the restriction to the utility model protection domain.
Referring to shown in Figure 1, the fluidized-bed reactor that the utility model provides, comprise: fluid bed body 1, sand filling passageway 3, exhaust passage 2, air inlet 4, sand export 5, air nozzle 6, the upper end of fluid bed body 1 is located in exhaust passage 2, sand filling passageway 3 is located on the exhaust passage 2, through to fluid bed body 1 inside, the lower end of fluid bed body 1 is provided with sand export 5, air inlet 4 is located at a side of fluid bed body 1, air nozzle 6 is located at fluid bed body 1 inside, and air nozzle 6 comprises: combustion air nozzle 8, air-distribution cover 7, air-distribution cover 7 are located on the combustion air nozzle 8, the air-distribution cover is provided with passage, is filled with oxygen-enriched air in the air inlet 4.Passage is uniformly distributed on the air-distribution cover 7.
When the utility model is done the combustion air of the fluidized-bed reactor technological system that casting old-sand regeneration processes for normal air, the technological system thermal efficiency that causes because of nearly 79% invalid nitrogen introducing in the air is not high, the gas consumption rate is higher, auxiliary equipment (plant air and high-temperature tail gas heat-exchanger rig, combustion fan, smoke induced draught fan etc.) the equal inherent shortcoming such as very huge of scale and power, propose to adopt oxygen-enriched air to do combustion air, make the fluidization system that is applied to above-mentioned occasion reach the gas consumption rate and reduce, the auxiliary equipment scale reduces, the significantly reduced target of system's total cost.Passage is set so that gas flows out directly burning from airhood at the air-distribution cover, divides sheet not establish passage compared to conventional air, the utility model is so that gas combustion is more abundant.
With traditional, to adopt normal air be that the cast used sand fluid bed heat regeneration techniques system of combustion air compares, adopts " doing the cast used sand fluid bed heat regeneration techniques system of combustion air with oxygen-enriched air " of the present invention newly the multi-stage oven apparatus system of design have significant energy-conservation advantage:
Adopt oxygen-enriched air as after the combustion air, the consumption of fuel (take natural gas as example) will significantly reduce.Through measuring and calculating and experiment, when adopting normal air to be combustion air, the 1 ton of old resin air-set mold casting model powder (moisture content is in 5%) of regenerating needs mean consumption 52.5Nm
3Natural gas, the phase application quantity of normal air is 609.1Nm
3Be 28% oxygen-enriched air when doing combustion air when adopting oxygen concentration, the natural gas of the required consumption of the 1 ton of old resin air-set mold casting model powder of regenerate (equally moisture 5%) significantly is reduced to 31.2Nm
3(natural gas saving rate reaches 41%), fuel is cut down the effect highly significant.
When adopting oxygen-enriched air to do combustion air, reduced the invalid nitrogen total amount that combustion air enters fluidized-bed reactor, so that the corresponding minimizing of follow-up discharge amount of exhaust gas.According to measuring and calculating and actual testing result, be that 35% oxygen-enriched air is when doing combustion air when adopting oxygen content, toxic emission total amount when the total emission volumn of follow-up waste gas is done combustion air than the employing normal air reduces 20% to 25%, can make so follow-up emission-control equipment (plant air and high-temperature tail gas heat-exchanger rig, smoke induced draught fan etc.) and the scale of combustion fan all be able to corresponding reducing, rated power reduces, and produces thus significant power savings.
The remarkable decline of fuel and power consumption is so that the regeneration cost of waste and old casting model powder also significantly reduces.According to results of measuring, adopt oxygen-enriched air to do waste and old casting model powder and regenerate when using the combustion air of fluidized-bed reactor, regeneration cost can reduce by 15% to 30% on year-on-year basis.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. fluidized-bed reactor, comprise: the fluid bed body, sand filling passageway, the exhaust passage, air inlet, sand export, air nozzle, the upper end of described fluid bed body is located in described exhaust passage, described sand filling passageway is located on the described exhaust passage, through to described fluid bed body interior, the lower end of described fluid bed body is provided with sand export, described air inlet is located at a side of described fluid bed body, described air nozzle is located at described fluid bed body interior, it is characterized in that: described air nozzle comprises: the combustion air nozzle, the air-distribution cover, described air-distribution covers on the described combustion air nozzle, described air-distribution cover is provided with passage, is filled with oxygen-enriched air in the described air inlet.
2. fluidized-bed reactor according to claim 1, it is characterized in that: described passage is uniformly distributed on the described air-distribution cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320119837 CN203244956U (en) | 2013-03-15 | 2013-03-15 | Fluidized bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320119837 CN203244956U (en) | 2013-03-15 | 2013-03-15 | Fluidized bed reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203244956U true CN203244956U (en) | 2013-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320119837 Expired - Lifetime CN203244956U (en) | 2013-03-15 | 2013-03-15 | Fluidized bed reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967005A (en) * | 2019-04-02 | 2019-07-05 | 山东力山特智能科技有限公司 | A kind of reacting furnace using coke-stove gas fluidized bed acid regeneration process |
-
2013
- 2013-03-15 CN CN 201320119837 patent/CN203244956U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109967005A (en) * | 2019-04-02 | 2019-07-05 | 山东力山特智能科技有限公司 | A kind of reacting furnace using coke-stove gas fluidized bed acid regeneration process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 225100 West Road, Hanjiang Economic Development Zone, Yangzhou, Jiangsu Province, No. 217 Patentee after: SHANGDING ENVIRONMENTAL TECHNOLOGY (JIANGSU) Co.,Ltd. Address before: 225100 Yangzhou City, Jiangsu Province, Yangzhou City Hanjiang Economic Development Zone Development West Road No. 217 Patentee before: SHANG DING FURNACE TECHNOLOGY (YANGZHOU) CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |