CN210905541U - Benzoic acid tail gas environmental protection processing apparatus - Google Patents
Benzoic acid tail gas environmental protection processing apparatus Download PDFInfo
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- CN210905541U CN210905541U CN201921510400.1U CN201921510400U CN210905541U CN 210905541 U CN210905541 U CN 210905541U CN 201921510400 U CN201921510400 U CN 201921510400U CN 210905541 U CN210905541 U CN 210905541U
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- tail gas
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- benzoic acid
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Abstract
The utility model provides a benzoic acid tail gas environmental protection processing apparatus, including first condenser, the air inlet and the tail gas vent-pipe of first condenser are connected, the gas outlet and the commentaries on classics workbin of first condenser are connected, change the workbin and be equipped with bin outlet and gas vent, and the gas vent passes through the pipeline to be connected with adsorption apparatus, and adsorption apparatus constructs including adsorbing the case, is equipped with the sieve in the adsorption case and sets up the active carbon adsorption layer on the sieve, and the adsorption bottom of the case portion is equipped with intake pipe and steam outlet, and the top is equipped with blast pipe and steam inlet, and steam outlet passes through the pipeline to be connected with the air inlet. The device can handle the tail gas in the benzoic acid production, reduces the toluene content in the tail gas.
Description
Technical Field
The utility model belongs to benzoic acid production facility field, in particular to benzoic acid tail gas environmental protection processing apparatus.
Background
Benzoic acid, also known as benzoic acid, is widely used worldwide as an important chemical industry material, food, drug, feed additive, and the like. At present, the industrial production of benzoic acid mainly adopts a liquid-phase toluene catalytic oxidation method. In the process system, the ventilation tail gas of the oxidation device easily causes environmental pollution and can be discharged after being treated. Most of tail gas generated by oxidation reaction is benzoic acid, toluene and water vapor, the existing treatment process is generally condensation treatment of the tail gas, but the condensed tail gas cannot reach the emission standard and still contains toluene.
Disclosure of Invention
The utility model aims to solve the technical problem that a benzoic acid tail gas environmental protection processing apparatus is provided, can handle the tail gas in the benzoic acid production, reduce the toluene content in the tail gas.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a benzoic acid tail gas environmental protection processing apparatus, includes first condenser, and the air inlet and the tail gas vent-pipe of first condenser are connected, the gas outlet and the commentaries on classics workbin of first condenser are connected, change the workbin and be equipped with bin outlet and gas vent, and the gas vent passes through the pipeline to be connected with adsorption apparatus, and adsorption apparatus constructs including adsorbing the case, is equipped with the sieve in the adsorption case and sets up the active carbon adsorption layer on the sieve, and the adsorption bottom of the case portion is equipped with intake pipe and steam outlet, and the top is equipped with blast pipe and steam inlet, and steam outlet passes through the pipeline and is.
In a preferred scheme, the air outlet of the second condenser is connected with the layering tank.
In the preferred scheme, the number of the adsorption tanks is two, and the air inlet pipe of each adsorption tank is provided with a valve.
In the preferred scheme, the adsorption box includes the sealed lid of the cushion chamber of bottom, top and sets up the absorption chamber between cushion chamber and sealed lid, and the top outer wall of cushion chamber, the bottom outer wall of sealed lid and the upper and lower both ends outer wall in absorption chamber all are equipped with the connecting plate, through bolted connection between the connecting plate, and sieve and active carbon adsorption layer set up in the absorption chamber.
In a further scheme, a sealing gasket is arranged between the connecting plates.
In a preferred scheme, the number of the adsorption cavities is multiple.
In the preferred scheme, the active carbon adsorption layer is active carbon fiber, and sealed lid lower extreme is equipped with and compresses tightly the sieve, and the sieve in the cushion chamber all is equipped with pressure spring with the bottom that compresses tightly the sieve.
The utility model provides a benzoic acid tail gas environmental protection processing apparatus, the tail gas that benzoic acid oxidation reaction produced passes through first condenser condensation, and most benzoic acid and toluene in the tail gas are separated with its gas separation after the condensation, and the gas that does not condense further adsorbs through adsorption mechanism, further reduces the pollutant content in the gas; through letting in steam in to adsorption equipment, realize the desorption to the active carbon adsorption layer, guarantee adsorption equipment's normal use. Preferably, the desorbed gas enters a second condenser for condensation and then is introduced into a layering tank for layering, so that the recovery treatment of the adsorbed toluene is facilitated.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the adsorption mechanism;
in the figure: first condenser 1, tail gas blast pipe 2, change workbin 3, adsorption tank 4, sieve 5, active carbon adsorption layer 6, intake pipe 7, steam outlet 8, blast pipe 9, steam inlet 10, second condenser 11, layering groove 12, pressure spring 13, bin outlet 301, gas vent 302, cushion chamber 401, adsorb chamber 402, sealed lid 403, connecting plate 404, compress tightly sieve 405.
Detailed Description
Example 1: as shown in figure 1, a benzoic acid tail gas environmental protection processing apparatus, including first condenser 1, the air inlet and the tail gas blast pipe 2 of first condenser 1 are connected, the gas outlet and the commentaries on classics workbin 3 of first condenser 1 are connected, commentaries on classics workbin 3 is equipped with bin outlet 301 and gas vent 302, gas vent 302 passes through the pipeline and is connected with adsorption mechanism, adsorption mechanism includes adsorption tank 4, be equipped with sieve 5 and the active carbon adsorption layer 6 that sets up on sieve 5 in adsorption tank 4, sieve 5 plays the effect of supporting active carbon adsorption layer 6, do not influence simultaneously that gas gets into in active carbon adsorption layer 6, adsorption tank 4 bottom is equipped with intake pipe 7 and steam outlet 8, intake pipe 7 passes through the pipeline and is connected with the gas vent of commentaries on classics workbin 3, can set up the fan on the pipeline and accelerate the discharge of gas in commentaries on classics workbin 3, adsorption tank 4 top is equipped with, And valves are arranged on the steam outlet 8, the exhaust pipe 9 and the steam inlet 10, and the steam outlet 8 is connected with an air inlet of the second condenser 11 through a pipeline.
Tail gas generated in benzoic acid production is discharged into a first condenser 1 through a tail gas exhaust pipe 2, the tail gas is condensed through a condenser of the first condenser, condensed materials are communicated with uncondensed gas and discharged into a material transferring box 3 to be collected, the uncondensed tail gas enters an adsorption mechanism and is further adsorbed through an activated carbon adsorption layer 6, and the exhaust pipe 9 is evacuated after residual toluene is removed. After using a period, for guaranteeing the adsorption effect of activated carbon adsorption layer 6 and retrieving absorbent toluene, carry the steam that steam generator produced to adsorption tank 4 from steam inlet 10, carry out the desorption to activated carbon adsorption layer 6, the gas after the desorption gets into and condenses in the second condenser 11, is favorable to retrieving the gas of desorption.
Preferably, the air outlet of the second condenser 11 is connected with the layering tank 12, the liquid condensed by the second condenser 11 is conveyed into the layering tank 12 for layering treatment, the toluene on the upper layer is recycled, and the organic wastewater on the lower layer is discharged into the wastewater treatment system for treatment and then discharged.
Preferably, the number of the adsorption tanks 4 is two, and the air inlet pipe 7 of the adsorption tank 4 is provided with a valve. Through setting up two adsorption tanks 4, can make two adsorption tanks 4 cross use, when carrying out the desorption to the active carbon adsorption layer 6 in one of them adsorption tank 4, another adsorption tank 4 can be normal adsorb the processing to can not influence going on smoothly of production because of going on of desorption.
Example 2: different from embodiment 1, as shown in fig. 2, the adsorption tank 4 includes a buffer chamber 401 at the bottom, a sealing cover 403 at the top, and an adsorption chamber 402 disposed between the buffer chamber 401 and the sealing cover 403, connecting plates 404 are disposed on the outer wall of the top of the buffer chamber 401, the outer wall of the bottom of the sealing cover 403, and the outer walls of the upper and lower ends of the adsorption chamber 402, the connecting plates 404 are connected by bolts, and the sieve plate 5 and the activated carbon adsorption layer 6 are disposed in the adsorption chamber 402.
Through setting up adsorption tank 4 into components of a whole that can function independently structure, conveniently change the active carbon adsorption layer 6 in cushion chamber 401.
A sealing gasket is arranged between the connecting plates 404. The air tightness of the connection of all the components can be improved, and the gas is prevented from overflowing.
The number of the adsorption cavities 402 may be plural, and in this embodiment, the number of the adsorption cavities 402 is two, and the two adsorption cavities are arranged in layers along the height of the adsorption box 4.
In this embodiment, activated carbon adsorption layer 6 is activated carbon fiber, and sealed lid 403 lower extreme is equipped with and compresses tightly sieve 405, and sieve 5 in the cushion chamber 401 all is equipped with pressure spring 13 with the bottom that compresses tightly sieve 405, and pressure spring 13 compresses tightly the setting at 6 upsides of activated carbon adsorption layer rather than adjacent, compresses tightly activated carbon adsorption layer 6 through setting up pressure spring 13, guarantees adsorption effect.
Further, the lower end of the compression spring 13 is provided with a compression plate, and the compression plate is provided with air holes, so that the compression uniformity is improved, and meanwhile, gas can smoothly pass through the compression plate.
Claims (7)
1. The utility model provides a benzoic acid tail gas environmental protection processing apparatus, includes first condenser (1), and the air inlet and the tail gas exhaust pipe (2) of first condenser (1) are connected, its characterized in that: the gas outlet of first condenser (1) is connected with commentaries on classics workbin (3), commentaries on classics workbin (3) are equipped with bin outlet (301) and gas vent (302), gas vent (302) are connected with adsorption device through the pipeline, adsorption device is including adsorption tank (4), be equipped with sieve (5) in adsorption tank (4) and set up active carbon adsorption layer (6) on sieve (5), adsorption tank (4) bottom is equipped with intake pipe (7) and steam outlet (8), the top is equipped with blast pipe (9) and steam inlet (10), steam outlet (8) are connected with the air inlet of second condenser (11) through the pipeline.
2. The benzoic acid tail gas environmental protection processing device of claim 1, characterized in that: and the air outlet of the second condenser (11) is connected with the layering tank (12).
3. The benzoic acid tail gas environmental protection processing device of claim 1, characterized in that: the number of the adsorption tanks (4) is two, and the air inlet pipe (7) of each adsorption tank (4) is provided with a valve.
4. The benzoic acid tail gas environmental protection processing device of claim 1, characterized in that: adsorption tank (4) include cushion chamber (401) of bottom, sealed lid (403) at top and set up absorption chamber (402) between cushion chamber (401) and sealed lid (403), the top outer wall of cushion chamber (401), the bottom outer wall of sealed lid (403) and the upper and lower both ends outer wall that adsorbs chamber (402) all are equipped with connecting plate (404), pass through bolted connection between connecting plate (404), sieve (5) and active carbon adsorption layer (6) set up in adsorbing chamber (402).
5. The benzoic acid tail gas environmental protection processing device of claim 4, characterized in that: and a sealing gasket is arranged between the connecting plates (404).
6. The benzoic acid tail gas environmental protection processing device of claim 4, characterized in that: the number of the adsorption cavities (402) is multiple.
7. The benzoic acid tail gas environmental protection processing device of claim 6, characterized in that: active carbon adsorption layer (6) are active carbon fiber, and sealed lid (403) lower extreme is equipped with compresses tightly sieve (405), and sieve (5) in cushion chamber (401) and the bottom that compresses tightly sieve (405) all are equipped with pressure spring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921510400.1U CN210905541U (en) | 2019-09-11 | 2019-09-11 | Benzoic acid tail gas environmental protection processing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921510400.1U CN210905541U (en) | 2019-09-11 | 2019-09-11 | Benzoic acid tail gas environmental protection processing apparatus |
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| Publication Number | Publication Date |
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| CN210905541U true CN210905541U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921510400.1U Expired - Fee Related CN210905541U (en) | 2019-09-11 | 2019-09-11 | Benzoic acid tail gas environmental protection processing apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777767A (en) * | 2020-12-25 | 2021-05-11 | 济南大学 | Radioactive iodine nuclide adsorption treatment method |
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2019
- 2019-09-11 CN CN201921510400.1U patent/CN210905541U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112777767A (en) * | 2020-12-25 | 2021-05-11 | 济南大学 | Radioactive iodine nuclide adsorption treatment method |
| CN112777767B (en) * | 2020-12-25 | 2022-07-22 | 济南大学 | Radioactive iodine nuclide adsorption treatment method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 Termination date: 20210911 |