CN211537253U - Exhaust treatment device suitable for small-size various package factory - Google Patents
Exhaust treatment device suitable for small-size various package factory Download PDFInfo
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- CN211537253U CN211537253U CN201922334248.2U CN201922334248U CN211537253U CN 211537253 U CN211537253 U CN 211537253U CN 201922334248 U CN201922334248 U CN 201922334248U CN 211537253 U CN211537253 U CN 211537253U
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Abstract
The utility model relates to a waste gas treatment device suitable for small-size color bag factory, including circulating air-reducing system, catalytic oxidation stove, draught fan and chimney that connect gradually through the pipeline, circulating air-reducing system includes the total exhaust fan, the output end of the total exhaust fan is connected with the catalytic oxidation stove, and the input end is connected with a plurality of printing color groups that are arranged in parallel; each printing color group comprises an oven, the input end of the oven is connected with a heat exchanger, the output end of the oven is connected with a circulating fan, the circulating fan is further connected to the heat exchanger to form circulation, a return air tee joint is arranged on a pipeline between the circulating fan and the heat exchanger, and one outlet of the return air tee joint is connected to a general exhaust fan. The utility model discloses the exhaust treatment device who is applicable to small-size various package factory that obtains can effectively handle waste gas, and the operation energy consumption is low, the input cost is low.
Description
Technical Field
The utility model relates to a waste gas treatment technical field especially relates to a waste gas treatment device suitable for small-size various package factory.
Background
China has a plurality of color package printing industries, VOCs can be generated in the color package printing process, and therefore the color package industry is the key industry for VOCs treatment in China. At present, color packaging and printing enterprises in China have great differences in scale, equipment and product types. For large-scale enterprises, zeolite runners or activated carbon are mainly adopted at present for adsorption concentration, adsorbed gas is directly discharged, activated carbon saturated in adsorption is desorbed by hot gas, desorbed small-air-volume high-concentration waste gas is treated by an RTO combustion method, and combusted gas is directly discharged. The treatment method has the problems of large investment and high operation cost. There are many small-sized color-coated enterprises in China, and the small-sized color-coated enterprises generally only have one or two printing lines, and most of the enterprises cannot bear the waste gas treatment method with high investment and operation cost. Therefore, a small-sized color bag enterprise urgently needs an efficient and low-cost waste gas treatment system.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a waste gas treatment device suitable for small-size various package factory, this waste gas treatment device can effectively handle waste gas, and the operation energy consumption is low, the input cost is low.
The utility model adopts the technical proposal that: a waste gas treatment device suitable for small-sized color bag factories is used for treating organic waste gas and comprises a circulating air reduction system, a catalytic oxidation furnace, an induced draft fan and a chimney which are sequentially connected through a pipeline, wherein the circulating air reduction system comprises a main exhaust fan, the output end of the main exhaust fan is connected with the catalytic oxidation furnace, and the input end of the main exhaust fan is connected with a plurality of printing color groups which are arranged in parallel; each printing color group comprises an oven, the input end of the oven is connected with a heat exchanger, the output end of the oven is connected with a circulating fan, the circulating fan is further connected to the heat exchanger to form circulation, a return air tee joint is arranged on a pipeline between the circulating fan and the heat exchanger, and one outlet of the return air tee joint is connected to a main exhaust fan; the automatic air conditioner is characterized by further comprising an automatic control system, wherein valves are arranged on a pipeline between the main exhaust fan and the return air tee joint and a pipeline between the return air tee joint and the heat exchanger, the valves are electrically connected to the automatic control system, and the main exhaust fan is also electrically connected to the automatic control system.
As the further restriction to the technical scheme, a branch pipe is arranged on a pipeline between the catalytic oxidation furnace and the induced draft fan, the branch pipe is connected to a heat medium input end of the heat exchanger, and a heat medium output end of the heat exchanger is connected to the chimney through the fan.
As a further limitation to the above technical solution, a drying box is disposed in the oven adjacent to the output end, and the drying box includes a box body and a drying agent disposed inside the box body.
As a further limitation to the technical scheme, the box body is formed by surrounding a side wall, a top plate and a bottom plate, and a plurality of through holes arranged in an array are formed in the top plate, the bottom plate and the side wall.
As a further limitation to the above technical solution, the drying box is detachably fixed in the oven.
As a further limitation to the technical scheme, a plurality of baffle plates are arranged in the oven.
As a further limitation to the above technical scheme, an LEL concentration detector is installed between the main exhaust fan and the return air tee, and the LEL concentration detector is electrically connected to the automatic control system.
As a further limitation to the above technical solution, a check valve is further installed between the main exhaust fan and the return air tee.
As a further limitation to the technical scheme, the catalytic oxidation furnace is internally and sequentially connected with a heating chamber and a catalytic oxidation chamber, and a plurality of layers of catalytic bed layers which are arranged at intervals along the height direction of the catalytic oxidation chamber are arranged in the catalytic oxidation chamber.
Adopt above-mentioned technique, the utility model has the advantages of:
the utility model discloses a waste gas treatment device suitable for small-size various package factory, make some waste gas enter heat exchanger, oven, circulating fan again and circulate through the return air tee bend among the circulation air-reducing system, therefore can realize the effect of air-reducing, thickening to waste gas, the waste gas of thickening enters catalytic oxidation stove through total exhaust fan afterwards and carries out the oxygenolysis, the clean gas after the decomposition is discharged into the chimney through the draught fan and can be carried out discharge to reach standard; the self-sustaining concentration required by the catalytic oxidation furnace is relatively low, so that the self-sustaining operation of the catalytic oxidation furnace can be met through the exhaust gas after air reduction and concentration increase, and the whole device has low operation energy consumption and low investment cost; meanwhile, the automatic control system can automatically operate the device system, and automatic management is realized.
The setting of branch pipe can be used to let in the clean gas of part high temperature after catalytic oxidation stove handles to accomplish in the heat exchanger with the heat transfer of waste gas, effectively improves thermal utilization, avoids thermal waste, resources are saved.
The setting of drying box has the effect of adsorbing vapor, can improve the combustion effect in enrichment waste gas later stage greatly.
Drying box detachable is fixed in the setting in the oven, can make things convenient for drying box dismouting in the oven fast to change and maintain the drier in the box body.
The setting of a plurality of baffling boards in the oven can prolong the dwell time of waste gas in the oven, and the volume of airing exhaust of the waste gas that has significantly reduced plays the effect of induced drafting.
LEL concentration detector's setting can be used to the gas concentration that real-time detection got into total exhaust fan, and the gas concentration direct feedback of monitoring gives automatic control system, and automatic control system can finally reach the effect that subtracts wind, thicken according to the frequency that detects numerical control main exhaust fan and the degree of opening and shutting of each valve like this.
The setting of check valve can prevent that waste gas from flowing backward, causes the workshop peculiar smell too big, also can effectively protect workman's personal safety simultaneously.
The arrangement of the multiple layers of catalytic bed layers in the catalytic oxidation furnace can effectively improve the contact time and the contact area of the waste gas and the catalyst in the catalytic bed layer, thereby improving the treatment efficiency of the waste gas; meanwhile, the utilization rate of the catalyst can be improved, the catalyst in different catalytic beds can be replaced according to the actual use condition, the waste of the catalyst is avoided, and the production cost of enterprises can be effectively saved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a circulating air reduction system; 11-total exhaust fan, 12-printing color group; 121-baking oven; 122-a heat exchanger; 123-circulating fan; 124-return air tee joint; 13-a fan; 14-a check valve; 15-LEL concentration detector; 2-catalytic oxidation furnace; 21-a heating chamber; 22-a catalytic oxidation chamber; 221-a catalytic bed layer; 3-a draught fan; 4-a chimney; 5-baffle plate; 6-drying the box.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the waste gas treatment device suitable for small-sized color bag factories comprises a circulating air reduction system 1, a catalytic oxidation furnace 2, an induced draft fan 3 and a chimney 4 which are sequentially connected through pipelines, wherein the circulating air reduction system 1 comprises a total exhaust fan 11, the output end of the total exhaust fan 11 is connected with the catalytic oxidation furnace 2, and the input end of the total exhaust fan 11 is connected with a plurality of printing color groups 12 which are arranged in parallel; each printing color group 12 comprises an oven 121, the input end of the oven 121 is connected with a heat exchanger 122, the output end of the oven 121 is connected with a circulating fan 123, the circulating fan 123 is further connected to the heat exchanger 122 to form circulation, a return air tee 124 is arranged on a pipeline between the circulating fan 123 and the heat exchanger 122, and one outlet of the return air tee 124 is connected to the general exhaust fan 11. Therefore, a part of the waste gas can enter the heat exchanger 122, the oven 121 and the circulating fan 123 again for circulation through the return air tee 124 in the circulating air reducing system 1, so that the effects of reducing air and increasing concentration can be realized on the waste gas, then the increased concentration waste gas enters the catalytic oxidation furnace 2 for oxidative decomposition through the main exhaust fan 11, and the decomposed clean gas is discharged into the chimney 4 through the induced draft fan 3 to be discharged up to the standard. The invention adopts the catalytic oxidation furnace 2 to treat the waste gas because the self-sustaining concentration required by the catalytic oxidation furnace 2 is relatively low, so the waste gas after being subjected to air reduction and concentration can meet the self-sustaining operation of the catalytic oxidation furnace, and the whole device has low operation energy consumption and low investment cost.
The air conditioner further comprises an automatic control system, valves are arranged on a pipeline between the main exhaust fan 11 and the return air tee 124 and a pipeline between the return air tee 124 and the heat exchanger 122, the valves are electrically connected to the automatic control system, and the main exhaust fan 11 is also electrically connected to the automatic control system. The automatic control system can automatically operate the device system, and automatic management is realized.
Further, a branch pipe is arranged on a pipeline between the catalytic oxidation furnace 2 and the induced draft fan 3, the branch pipe is connected to a heat medium input end of the heat exchanger 122, and a heat medium output end of the heat exchanger 122 is connected to the chimney 4 through the fan 13. So set up, can be used for letting in partial high temperature clean gas after catalytic oxidation stove 2 handles to accomplish in heat exchanger 122 with the heat transfer of circulation waste gas, effectively improve thermal utilization, avoid thermal waste, resources are saved.
The catalytic oxidation furnace 2 is connected with a heating chamber 21 and a catalytic oxidation chamber 22 in sequence, and a plurality of catalytic bed layers 221 arranged at intervals along the height direction of the catalytic oxidation chamber are arranged in the catalytic oxidation chamber 22. The arrangement of the multiple layers of catalytic bed layers 221 can effectively improve the contact time and contact area of the exhaust gas and the catalyst in the catalytic bed layers 221, so that the treatment efficiency of the exhaust gas can be improved; meanwhile, the utilization rate of the catalyst can be improved, the catalyst in different catalytic beds 221 can be replaced according to actual use conditions, waste of the catalyst is avoided, and production cost of enterprises can be effectively saved.
In addition, a drying box 6 is arranged in the oven 121 and is close to the output end, and the drying box 6 comprises a box body and a drying agent arranged in the box body. The drying box 6 has the function of absorbing water vapor, so that the later combustion effect of the enriched waste gas can be greatly improved. The box body is formed by surrounding a side wall, a top plate and a bottom plate, and a plurality of through holes arranged in an array are formed in the top plate, the bottom plate and the side wall. The arrangement of the through holes can ensure that the waste gas in the oven 121 smoothly passes through the through holes, and meanwhile, the drying agent in the box body can be prevented from falling off. The drying box 6 is detachably fixed in the oven 121. Therefore, the drying box 6 can be conveniently and quickly disassembled and assembled in the drying oven 121, and the drying agent in the box body can be conveniently replaced and maintained.
A plurality of baffle plates 5 are also arranged in the oven 121. The arrangement of the baffle plate 5 can prolong the retention time of the waste gas in the oven 121, greatly reduce the exhaust volume of the waste gas and play a role in reducing the wind. The heating assembly in the oven can also be arranged in the baffle plate, and the waste gas can directly collide on the baffle plate 5 when passing through the baffle plate 5, so that the contact area of the waste gas and the baffle plate 5 is greatly increased, and the drying effect of the waste gas can be obviously improved.
An LEL concentration detector 15 is arranged between the main exhaust fan 11 and the return air tee 124, and the LEL concentration detector 15 is electrically connected with an automatic control system. The LEL concentration detector 15 can actually detect the gas concentration entering the main exhaust fan 11, and the monitored gas concentration can be directly fed back to the automatic control system, so that the automatic control system can control the frequency of the main exhaust fan 11 and the opening and closing degree of each valve according to the detection value, and finally the effects of reducing wind and increasing concentration are achieved. A check valve 14 is also arranged between the general exhaust fan 11 and the return air tee 124. The check valve 14 can prevent the waste gas from flowing backwards to cause too much peculiar smell in a printing workshop, and can also effectively protect the personal safety of workers.
When the waste gas treatment device suitable for the small-sized color bag factory is used, waste gas in each printing color group 12 circulates in a circulating pipeline formed by the heat exchanger 122, the oven 121 and the circulating fan 123 under the action of the circulating fan 123, so that the effects of reducing air and increasing concentration of the waste gas are realized; part of the waste gas after air reduction and concentration continues to circulate, the rest enters the catalytic oxidation furnace 2 through the air return tee joint 124 and the main exhaust fan 11 for catalytic oxidation treatment, the clean gas after treatment is discharged to the atmosphere through a chimney through a draught fan, and the rest enters the heat exchanger 122 in the printing color group 12 for heat transfer with the waste gas, so that heat loss is avoided, and energy consumption is reduced. Therefore, exhaust treatment device can effectively handle waste gas, and the running energy consumption is low, the input cost is low.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the present invention within the technical scope of the present invention, and the technical solution obtained by replacing or changing the technical idea of the present invention with equivalents.
Claims (9)
1. The utility model provides an exhaust treatment device suitable for small-size various chartered plane which characterized in that: the device comprises a circulating air reduction system, a catalytic oxidation furnace, an induced draft fan and a chimney which are sequentially connected through pipelines, wherein the circulating air reduction system comprises a main exhaust fan, the output end of the main exhaust fan is connected with the catalytic oxidation furnace, and the input end of the main exhaust fan is connected with a plurality of printing color sets which are arranged in parallel; each printing color group comprises an oven, the input end of the oven is connected with a heat exchanger, the output end of the oven is connected with a circulating fan, the circulating fan is further connected to the heat exchanger to form circulation, a return air tee joint is arranged on a pipeline between the circulating fan and the heat exchanger, and one outlet of the return air tee joint is connected to a main exhaust fan; the automatic air conditioner is characterized by further comprising an automatic control system, wherein valves are arranged on a pipeline between the main exhaust fan and the return air tee joint and a pipeline between the return air tee joint and the heat exchanger, the valves are electrically connected to the automatic control system, and the main exhaust fan is also electrically connected to the automatic control system.
2. The exhaust gas treatment device of claim 1, wherein: and a branch pipe is arranged on a pipeline between the catalytic oxidation furnace and the induced draft fan, the branch pipe is connected to a heat medium input end of the heat exchanger, and a heat medium output end of the heat exchanger is connected to the chimney through the fan.
3. The exhaust gas treatment device of claim 1, wherein: and a drying box is arranged in the oven and is close to the output end, and the drying box comprises a box body and a drying agent arranged in the box body.
4. The exhaust gas treatment device of claim 3, wherein: the box body is formed by surrounding a side wall, a top plate and a bottom plate, and a plurality of through holes arranged in an array are formed in the top plate, the bottom plate and the side wall.
5. The exhaust gas treatment device of claim 3, wherein: the drying box is detachably fixed in the oven.
6. The exhaust gas treatment device of claim 1, wherein: a plurality of baffle plates are arranged in the oven.
7. The exhaust gas treatment device of claim 1, wherein: an LEL concentration detector is arranged between the main exhaust fan and the return air tee joint and is electrically connected with the automatic control system.
8. The exhaust gas treatment device of claim 1, wherein: and a check valve is also arranged between the main exhaust fan and the return air tee joint.
9. The exhaust gas treatment device of claim 1, wherein: the catalytic oxidation furnace is internally connected with a heating chamber and a catalytic oxidation chamber in sequence, and a plurality of catalytic bed layers which are arranged at intervals along the height direction of the catalytic oxidation chamber are arranged in the catalytic oxidation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922334248.2U CN211537253U (en) | 2019-12-23 | 2019-12-23 | Exhaust treatment device suitable for small-size various package factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922334248.2U CN211537253U (en) | 2019-12-23 | 2019-12-23 | Exhaust treatment device suitable for small-size various package factory |
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| Publication Number | Publication Date |
|---|---|
| CN211537253U true CN211537253U (en) | 2020-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922334248.2U Active CN211537253U (en) | 2019-12-23 | 2019-12-23 | Exhaust treatment device suitable for small-size various package factory |
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| Country | Link |
|---|---|
| CN (1) | CN211537253U (en) |
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- 2019-12-23 CN CN201922334248.2U patent/CN211537253U/en active Active
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