CN213995348U - Organic waste gas's absorption regenerating unit - Google Patents
Organic waste gas's absorption regenerating unit Download PDFInfo
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- CN213995348U CN213995348U CN202021794413.9U CN202021794413U CN213995348U CN 213995348 U CN213995348 U CN 213995348U CN 202021794413 U CN202021794413 U CN 202021794413U CN 213995348 U CN213995348 U CN 213995348U
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Abstract
The utility model relates to a waste gas treatment technical field especially relates to an organic waste gas's absorption regenerating unit. An organic waste gas adsorption regeneration device comprises a first adsorber, a second adsorber, a first condenser, an exhaust fan and a solvent tank; the waste gas inlet of first adsorber and second adsorber all is connected with waste gas, the adsorption export of first adsorber and second adsorber all communicates with atmosphere through clean gas discharge tube, its characterized in that, the desorption gas export of first adsorber is connected with first condenser, and the solvent export of first condenser is connected with the solvent groove, and the gaseous phase export of first condenser is connected the back with exhaust fan and is communicated with the waste gas inlet of second adsorber. The adsorption regeneration device through the organic waste gas can realize effective drying after the regeneration of the adsorption material, and extra drying equipment is not additionally arranged, so that the cost is reduced.
Description
Technical Field
The utility model relates to a waste gas treatment technical field especially relates to an organic waste gas's absorption regenerating unit.
Background
Volatile Organic Compounds (VOCs) contained in the organic waste gas generally refer to organic substances with saturated vapor pressure of over 70.91Pa or boiling point temperature of less than 260 ℃ at room temperature, and include aliphatic hydrocarbons, aromatic hydrocarbons, lipids, ketones, ethers and halogenated hydrocarbons, and the most common pollutants are benzene, toluene, xylene, styrene, banana oil, ethyl acetate, acetone, and the like. The organic waste gas is toxic and harmful gas, and the release of the organic waste gas in the air can cause serious environmental pollution, and if the organic waste gas is contacted or inhaled by a human body for a long time, serious harm can be brought to the nervous system and the hematopoietic function, even cancer and other diseases are caused until death. Organic waste gas generally adopts the adsorption method, to the steam desorption technology in the adsorption method, the problem exists is that after steam regeneration, adsorption material humidity is too big, seriously influences the adsorption material adsorption performance after regeneration, leads to the absorption initial stage after regeneration to discharge and is difficult to satisfy present emission requirement.
At present, for the adsorption material after steam regeneration, two main drying methods are adopted.
The first method is to use ambient air to dry the adsorption material, a large amount of water vapor is directly blown into the atmosphere from a tail gas exhaust port in the process, and the standard reaching is difficult to guarantee in the drying and blowing process.
The second is to adopt circulating fan circulation condensation dry adsorption material, and this in-process needs a large amount of steam of cooling, and the condensation energy consumption is great, and among the cooling cycle process, the gas after the condensation is in saturated humidity all the time, and dry belt water effect is also relatively poor. In consideration of the factors, a heating procedure after condensation is added in part of the process, the relative humidity of the circulating gas with water is reduced, after the condensation and heating procedures are added, the equipment investment and the operation energy consumption are greatly improved, and certain safety risk is brought to the process by heating. Meanwhile, the residual VOCs in the system can not be condensed in the circulating drying process, so that the residual VOCs in the system can return to the adsorbing material along with the circulating process to cause secondary pollution of the adsorbing material, and the next saturated adsorption rate of the adsorbing material is influenced.
Disclosure of Invention
In order to solve the problem, the utility model aims at providing an organic waste gas's absorption regenerating unit not only can realize the effective drying after the adsorption material regeneration, does not add extra drying equipment moreover, reduces the cost.
In order to achieve the purpose, the utility model relates to an organic waste gas adsorption and regeneration device, which comprises a first adsorber, a second adsorber, a first condenser, an exhaust fan and a solvent tank; the waste gas inlet of first adsorber and second adsorber all is connected with waste gas, the adsorption export of first adsorber and second adsorber all communicates with atmosphere through clean gas discharge tube, its characterized in that, the desorption gas export of first adsorber is connected with first condenser, and the solvent export of first condenser is connected with the solvent groove, and the gaseous phase export of first condenser is connected the back with exhaust fan and is communicated with the waste gas inlet of second adsorber.
As a preferable scheme, the device also comprises a second condenser and a gas-liquid separator, one path of a desorption gas outlet of the first adsorber is connected with the second condenser through a desorption liquid-liquid phase pipe and then is connected with the solvent tank, the other path of the desorption gas outlet of the first adsorber is connected with the first condenser through a desorption liquid-gas phase pipe, a liquid phase outlet of the first condenser is connected with the gas-liquid separator and the second condenser in sequence and then is connected with the solvent tank, and a gas phase outlet of the first condenser is connected with an exhaust fan through a noncondensable gas pipe and then is communicated with a waste gas inlet of the second adsorber.
Preferably, the waste gas inlet and the desorption gas outlet of the first adsorber are both arranged at the lower part of the first adsorber, and the adsorption outlet and the desorption gas inlet of the first adsorber are arranged at the upper part of the first adsorber; and the waste gas inlet and the desorption gas outlet of the second adsorber are both arranged at the lower part of the second adsorber, and the adsorption outlet and the desorption gas inlet of the second adsorber are arranged at the upper part of the second adsorber.
Preferably, the non-condensable gas pipe is provided with a pressure gauge and a thermometer. The condensation effect of the first condenser is adjusted by observing a thermometer, so that the temperature of moisture output from the first adsorber is lower than 40 ℃, and the adsorption effect of the second adsorber is not influenced; through observing the manometer, the negative pressure value of control access guarantees that the drying process in the environmental wind is inhaled in the first adsorber, guarantees the continuous safety of drying process and goes on.
As a preferred scheme, a CO concentration detector is arranged on the clean gas discharge pipe. The CO concentration detector continuously monitors the CO concentration at the discharge port to ensure that the adsorption process is in a safe state.
The utility model has the advantages that: the utility model discloses an organic waste gas's adsorption and regeneration device, including first adsorber, the second adsorber, first condenser, exhaust fan and solvent groove, the waste gas import of first adsorber and second adsorber all is connected with waste gas, the absorption export of first adsorber and second adsorber all communicates with the atmosphere through clean gas discharge tube, the desorption gas export of first adsorber is connected with first condenser, the solvent export and the solvent groove of first condenser are connected, the gaseous phase export of first condenser is connected the back with exhaust fan and is communicated with the waste gas import of second adsorber. Utilize the utility model discloses an organic waste gas's absorption regenerating unit, first adsorber and second adsorber can realize one absorption and take off continuous operation, and the drying process is dried first adsorber from adsorbing export suction environment wind through exhaust fan, need not to increase drying equipment, can realize the effective drying after the adsorption material regeneration.
Drawings
FIG. 1 is a schematic structural view of an adsorption regeneration device for waste gas treatment according to the present invention;
the components in the figures are numbered as follows: the components in the figures are numbered as follows: an air inlet fan 1, a first adsorber 2, a second adsorber 3, a first condenser 4, a solvent tank 5, a second cooler 6, a gas-liquid separator 7, an air exhaust fan 8, an adsorption fan air inlet pipe 9, a first adsorber adsorption air inlet pipe 10, a first adsorber adsorption air outlet pipe 11, a second adsorber adsorption air inlet pipe 12, a second adsorber adsorption air outlet pipe 13, a first adsorber desorption liquid header pipe 14, a second adsorber desorption liquid header pipe 15, a desorption liquid gas phase pipe 16, a desorption liquid phase pipe 17, a first condenser condensate pipe 18, a noncondensable gas pipe 19, a CO concentration detector 20, a pressure gauge 21, a thermometer 22, a clean gas exhaust pipe 23, a first adsorber adsorption air inlet valve K1, a first adsorber steam inlet valve K2, a first adsorber adsorption air outlet valve K3, a first adsorber desorption liquid valve K4, A second adsorber adsorption air inlet valve K5, a second adsorber steam inlet valve K6, a second adsorber adsorption air outlet valve K7 and a second adsorber desorption liquid valve K8.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings and specific examples.
Examples
Referring to fig. 1, the organic waste gas adsorption and regeneration device of the present embodiment includes a first adsorber 2, a second adsorber 3, a first condenser 4, a second condenser 6, a gas-liquid separator 7, an air intake fan 1, an exhaust fan 8, and a solvent tank 5; the waste gas inlets of the first adsorber 2 and the second adsorber 3 are connected with waste gas through an air intake fan 1, the adsorption outlets of the first adsorber 2 and the second adsorber 3 are communicated with the atmosphere through a clean gas discharge pipe 23, one path of desorption gas outlet of the first adsorber 2 is connected with a solvent tank 5 after being connected with a second condenser 6 through a desorption liquid-liquid phase pipe 17, the other path of desorption gas outlet is connected with a first condenser 4 through a desorption liquid-gas phase pipe 16, the liquid phase outlet of the first condenser 4 is connected with the solvent tank 5 after being sequentially connected with a gas-liquid separator 7 and the second condenser 6, and the gas phase outlet of the first condenser 4 is connected with an air exhaust fan 8 through a noncondensable gas pipe 19 and then is communicated with the waste gas inlet of the second adsorber 3. Wherein the waste gas inlet and the desorption gas outlet of the first adsorber 2 are both arranged at the lower part of the first adsorber 2, and the adsorption outlet and the desorption gas inlet of the first adsorber 2 are arranged at the upper part of the first adsorber 2; the waste gas inlet and the desorption gas outlet of the second adsorber 3 are both arranged at the lower part of the second adsorber 3, and the adsorption outlet and the desorption gas inlet of the second adsorber 3 are arranged at the upper part of the second adsorber 3.
The organic waste gas treatment apparatus using the organic waste gas according to the present embodiment includes three stages, namely an adsorption stage, a steam regeneration stage and a drying stage, which are described in detail with reference to fig. 1.
1) Adsorption phase
Organic waste gas enters the first adsorber 2 through the air inlet fan 1, after being adsorbed by an adsorbing material bed layer in the first adsorber 2, tail gas is discharged up to the standard, the CO concentration detector 20 continuously monitors CO concentration at the discharge port to ensure that the adsorption process is in a safe state, in the process, the first adsorber adsorption air inlet valve K1 and the first adsorber adsorption air outlet valve K3 are opened, all other valves are closed, and the second adsorber 3 is in a standby state.
2) Steam regeneration stage
After the first adsorber 2 is saturated in adsorption, the second adsorber 3 is switched to an adsorption state, and an adsorption air inlet valve K5 and an adsorption air outlet valve K7 of the second adsorber are opened; the first adsorber 2 is switched to a steam regeneration state, a first adsorber adsorption air inlet valve K1 and a first adsorber adsorption air outlet valve K3 are closed, a first adsorber desorption liquid valve K4 and a first adsorber steam inlet valve K2 are sequentially opened, steam enters an adsorber bed layer to regenerate the bed layer from top to bottom, a solvent in the adsorption material is blown off the bed layer along with the steam in the regeneration process, a desorption liquid phase is condensed and cooled by a second cooler 6 through a desorption liquid-liquid phase pipe 17 and then enters a solvent tank 5, a desorption gas phase is condensed and cooled by a first condenser 4, a gas-liquid separator 7 and a second cooler 6 through a desorption liquid-gas phase pipe 16 and then enters the solvent tank 5, and a non-condensable gas passing through a first condenser 4 enters an adsorption fan air inlet pipe 9 through a non-condensable gas pipe 19 and an air exhaust fan 8 and then enters a second adsorber 3 to be subjected to adsorption treatment and then is discharged.
3) Drying stage
After the regeneration of the first adsorber 2 is completed, the whole adsorber contains a large amount of water vapor and has high temperature, at the moment, a drying stage needs to be entered, the steam inlet valve K2 of the first adsorber is closed, the adsorption outlet valve K3 of the first adsorber is opened, ambient air is sucked from the adsorption outlet of the first adsorber 2 through the exhaust fan 8, moisture in the first adsorber 2 is cooled through the first condenser 4, condensate water passing through the first condenser 4 passes through the gas-liquid separator 7 and the first condenser condensate liquid pipe 18 and then sequentially enters the second cooler 6 and the solvent tank 5, and gas with low-concentration VOCs which cannot be condensed is introduced into the second adsorber 3 for further adsorption evacuation treatment. Controlling the frequency of the air exhaust fan 8 to control the pressure value of the pressure gauge 21 in the drying process, and ensuring that the adsorption outlet of the first adsorber 2 is in an air inlet state; utilize first condenser 4 control thermometer 22 temperature value, guarantee that second adsorber adsorption entrance temperature is less than 40 ℃, do not influence the adsorption effect of second adsorber, when moisture was taken out, inspiratory ambient wind continuously cools down the adsorber, treats that the adsorption material temperature drops to below 40 ℃, stops the drying, gets into the standby state, prepares to get into next adsorption stage.
Compared with the existing organic waste gas treatment device and process, the details are shown in table 1:
TABLE 1
The organic waste gas adsorption and regeneration device of the embodiment has the advantages that:
(1) the organic waste gas's of this embodiment adsorbs regenerating unit opens the absorption gas outlet in drying process, inhales clean environment gas from the absorption gas outlet through exhaust fan and carries out the drying to adsorption material, need not to increase drying equipment, reduces the input cost.
(2) In the embodiment, the waste gas inlet and the desorption gas outlet of the adsorber are both arranged at the lower part of the adsorber, and the adsorption outlet and the desorption gas inlet of the adsorber are arranged at the upper part of the adsorber; in the adsorption process, tail gas is adsorbed from bottom to top, the cavity is a clean area on the adsorber, in the analysis process, steam is analyzed from top to bottom to the adsorber, the solvent is driven from top to bottom, the whole adsorber still keeps the trend of being gradually clean from bottom to top, in the drying process, clean air is supplemented to the adsorption outlet, therefore, the upper part of the adsorber in the whole process is kept in a clean state, the secondary pollution of adsorption materials can not be introduced, and the next adsorption up-to-standard emission can be ensured.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. An organic waste gas adsorption regeneration device comprises a first adsorber (2), a second adsorber (3), a first condenser (4), an exhaust fan (8) and a solvent tank (5); the waste gas import of first adsorber (2) and second adsorber (3) all is connected with waste gas, the adsorption export of first adsorber (2) and second adsorber (3) all communicates with the atmosphere through clean gas blow-off pipe (23), the desorption entry of first adsorber (2) and second adsorber (3) all is connected with desorption gas, its characterized in that, the desorption gas export of first adsorber (2) is connected with first condenser (4), and the solvent export of first condenser (4) is connected with solvent groove (5), and the gaseous phase export of first condenser (4) is connected back and exhaust fan (8) and is communicated with the waste gas import of second adsorber (3).
2. The organic waste gas adsorption and regeneration device according to claim 1, further comprising a second condenser (6) and a gas-liquid separator (7), wherein one path of the desorption gas outlet of the first adsorber (2) is connected with the second condenser (6) through a desorption liquid-liquid pipe (17) and then connected with the solvent tank (5), the other path of the desorption gas outlet is connected with the first condenser (4) through a desorption liquid-gas pipe (16), the liquid phase outlet of the first condenser (4) is connected with the gas-liquid separator (7) and the second condenser (6) in sequence and then connected with the solvent tank (5), and the gas phase outlet of the first condenser (4) is connected with the exhaust fan (8) through a noncondensing pipe (19) and then led to the waste gas inlet of the second adsorber (3).
3. The organic waste gas adsorption regeneration device according to claim 1 or 2, wherein the waste gas inlet and the desorption gas outlet of the first adsorber (2) are both disposed at the lower part of the first adsorber (2), and the adsorption outlet and the desorption gas inlet of the first adsorber (2) are disposed at the upper part of the first adsorber (2); and the waste gas inlet and the desorption gas outlet of the second adsorber (3) are both arranged at the lower part of the second adsorber (3), and the adsorption outlet and the desorption gas inlet of the second adsorber (3) are arranged at the upper part of the second adsorber (3).
4. The organic waste gas adsorption regeneration device according to claim 2, wherein the noncondensable gas pipe (19) is provided with a pressure gauge (21) and a temperature gauge (22).
5. The organic waste gas adsorption regeneration device according to claim 1 or 2, wherein a CO concentration detector (20) is provided on the clean gas discharge pipe (23).
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| CN202021794413.9U CN213995348U (en) | 2020-08-25 | 2020-08-25 | Organic waste gas's absorption regenerating unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324752A (en) * | 2021-12-20 | 2022-04-12 | 中海油节能环保服务有限公司 | High vapor-containing VOCs waste gas production and treatment simulation system |
| CN114931838A (en) * | 2022-03-29 | 2022-08-23 | 扬州海通电子科技有限公司 | Adsorption condensation recovery system and method |
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2020
- 2020-08-25 CN CN202021794413.9U patent/CN213995348U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324752A (en) * | 2021-12-20 | 2022-04-12 | 中海油节能环保服务有限公司 | High vapor-containing VOCs waste gas production and treatment simulation system |
| CN114931838A (en) * | 2022-03-29 | 2022-08-23 | 扬州海通电子科技有限公司 | Adsorption condensation recovery system and method |
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