CN218741127U - Organic waste gas recovery coupling carbon emission reduction condensing system - Google Patents
Organic waste gas recovery coupling carbon emission reduction condensing system Download PDFInfo
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- CN218741127U CN218741127U CN202222109022.4U CN202222109022U CN218741127U CN 218741127 U CN218741127 U CN 218741127U CN 202222109022 U CN202222109022 U CN 202222109022U CN 218741127 U CN218741127 U CN 218741127U
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Abstract
The utility model discloses an organic waste gas retrieves coupling carbon emission reduction condensing system, including adsorption system, desorption system and drying system, adsorption system includes the same and parallelly connected first adsorption tower and the second adsorption tower that sets up of structure, the desorption system includes the two-stage condensing system, the gas access of two-stage condensing system communicates with the organic steam export of first adsorption tower, the organic steam export of second adsorption tower respectively, the condensate export intercommunication of two-stage condensing system has oil water separator, oil water separator's upper end is equipped with the noncondensable gas export, and one side is equipped with the solvent recovery export, through noncondensable gas pipeline intercommunication between noncondensable gas export and the waste gas entry. The utility model discloses well adoption adsorption system, desorption system, drying system and oil-water separator are used for retrieving the organic waste gas of purification, have realized the purification up to standard emission of organic solvent's recycle and waste gas, have gained apparent economic benefits and environmental protection benefit.
Description
Technical Field
The utility model relates to an organic waste gas field especially relates to an organic waste gas retrieves coupling carbon and reduces discharging condensing system.
Background
In industrial production and daily life, various organic waste gases are generated, which not only cause air pollution and harm to human health, but also cause waste of resources. At present, the method for recycling and treating organic waste gas at home and abroad mainly comprises a condensation method, an absorption method, an adsorption method, a membrane separation technology and the like, and the condensation method is not suitable for treating low-concentration organic gas, needs low temperature and high pressure, has high equipment and operation cost and is rarely used independently; the absorption method has higher requirements on the absorbent and the absorption equipment, and the absorbent needs to be replaced periodically, so the process is more complicated and the cost is higher; the membrane separation technology has a certain distance from the realization of industrial application.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an organic waste gas retrieves coupling carbon emission reduction condensing system.
The utility model discloses an innovation point lies in adopting adsorption system, desorption system, drying system and oil-water separator to be used for retrieving the organic waste gas of purification, has realized the purification up to standard emission of organic solvent's recycle and waste gas, has gained apparent economic benefits and environmental protection benefit.
In order to realize the purpose of the utility model, the technical proposal of the utility model is that:
an organic waste gas recovery coupling carbon emission reduction condensation system comprises an adsorption system, a desorption system and a drying system, wherein the adsorption system comprises a first adsorption tower and a second adsorption tower which have the same structure and are arranged in parallel; a first activated carbon bed layer and a second activated carbon bed layer are sequentially arranged in the first adsorption tower from top to bottom, a waste gas inlet is formed in one side of the first adsorption tower and is positioned between the first activated carbon bed layer and the second activated carbon bed layer, a first waste gas outlet and a second waste gas outlet are sequentially formed in the other side of the first adsorption tower from top to bottom, the first waste gas outlet is positioned above the first activated carbon bed layer, the second waste gas outlet is positioned below the second activated carbon bed layer, a steam inlet is formed in the upper end of the first adsorption tower, and an organic steam outlet is formed in the lower end of the first adsorption tower; valves are arranged on the pipeline at the waste gas inlet, the pipeline at the waste gas outlet, the pipeline at the steam inlet and the pipeline at the organic steam outlet; the desorption system comprises a two-stage condensation system, a gas inlet of the two-stage condensation system is respectively communicated with an organic steam outlet of the first adsorption tower and an organic steam outlet of the second adsorption tower, a condensate outlet of the two-stage condensation system is communicated with an oil-water separator, a non-condensable gas outlet is formed in the upper end of the oil-water separator, a solvent recovery outlet is formed in one side of the oil-water separator, and the non-condensable gas outlet is communicated with a waste gas inlet through a non-condensable gas pipeline; the connection mode of the second adsorption tower, the desorption system and the drying system is the same as that of the first adsorption tower, the desorption system and the drying system. Adopt adsorption system, desorption system, drying system and oil-water separator to be used for retrieving the organic waste gas of purification, realized organic solvent's recycle and the purification up to standard of waste gas and discharged, gained apparent economic benefits and environmental protection benefit. The device is provided with a first adsorption tower and a second adsorption tower, one adsorption tower is in an adsorption state, the other adsorption tower is in a standby state, when the first adsorption tower reaches a certain adsorption amount, a valve is closed, a valve of the second adsorption tower is opened to switch, and meanwhile, the first adsorption tower carries out desorption regeneration, so that continuous operation is realized. And a two-stage condensation system is adopted, so that the condensation effect is better. The first activated carbon bed layer and the second activated carbon layer can reduce the empty tower flow velocity and improve the adsorption effect. The noncondensable gas that oil water separator separated carries out the secondary adsorption after through noncondensable gas pipeline and source waste gas mix, improves the exhaust-gas treatment effect, environmental protection more.
Preferably, the two-stage condensation system comprises a first condenser, a second condenser and a gas-liquid separator; an organic steam inlet of the first condenser is respectively communicated with an organic steam outlet of the first adsorption tower and an organic steam outlet of the second adsorption tower; the water return port of the external circulating cooling water is respectively communicated with the water outlet of the first condenser and the water outlet of the second condenser; the upper end of the gas-liquid separator is provided with a gas outlet, the side wall of the gas-liquid separator is provided with a gas-liquid mixing inlet and a liquid outlet, the gas outlet is communicated with the organic steam inlet through a circulating pipeline, the gas-liquid mixing inlet is communicated with the gas outlet of the first condenser through a pipeline, the liquid outlet is communicated with the condensate inlet of the second condenser through a pipeline, and the condensate outlet of the second condenser is communicated with the condensate inlet of the oil-water separator. The first condenser and the second condenser are matched with a gas-liquid separator, so that the condensing effect is better. The noncondensable gas separated by the gas-liquid separator flows back to the organic steam inlet through the circulating pipeline and is condensed again, so that the condensation effect is improved.
Preferably, the drying system comprises a drying fan and a drying heater arranged on an air outlet pipeline of the drying fan; a first dry air inlet and a second dry air inlet are sequentially arranged on one side of the first adsorption tower from top to bottom, the first dry air inlet is positioned above the first activated carbon bed layer, the second dry air inlet is positioned below the second activated carbon bed layer, the first dry air inlet and the second dry air inlet are respectively communicated with an air outlet of the drying heater, and a dry air outlet positioned between the first activated carbon bed layer and the second activated carbon bed layer is arranged on the other side of the first adsorption tower; a third condenser is arranged at the first condenser, an output port of external circulating cooling water is communicated with a water inlet of the third condenser, a water return port of the external circulating cooling water is communicated with a water outlet of the third condenser, a dry gas outlet is communicated with a dry gas inlet of the third condenser, and a gas outlet of the third condenser is communicated with a non-condensable gas pipeline; and valves are arranged on the pipeline at the inlet of the first drying gas, the pipeline at the inlet of the second drying gas and the pipeline at the outlet of the drying gas. In the desorption stage, part of steam is condensed into water and is left in the activated carbon bed layer, and the activated carbon bed layer needs to be dried after desorption. The drying heater heats the fresh air coming out of the drying fan to about 60 ℃, and the hot air dries the moisture in the carbon layer through the activated carbon bed layer, so that the activated carbon bed layer can be repeatedly used.
Preferably, the first activated carbon bed layer comprises a support grid, granular activated carbon and a pressing plate which are sequentially arranged from bottom to top, and the support grid and the pressing plate are horizontally arranged. The granular activated carbon has higher iodine value, better adsorption performance and better mechanical strength than honeycomb activated carbon.
Preferably, a steam uniform distributor communicated with a steam inlet is arranged in the top of the first adsorption tower, the steam uniform distributor comprises a header pipe and a plurality of branch pipes, the header pipe is horizontally arranged, the branch pipes are uniformly distributed at intervals along the length direction of the header pipe, and air outlets of the branch pipes face the first activated carbon bed layer. The steam uniform distributor can uniformly spray steam onto the activated carbon bed layer, so that the activated carbon bed layer is directly heated, and organic components adsorbed in the activated carbon bed layer are evaporated.
As preferred, the vertical baffle that is equipped with in the oil water separator, one side that the solvent recovery export was kept away from to the baffle is from last to being equipped with sewage outlet and heavy oil export down in proper order, be equipped with the chute in the bottom of oil water separator, and the least significant end of chute exports towards the heavy oil. The oil-water separator can also separate sewage and heavy oil in the organic waste gas, so that resources are saved, and the pollution to the environment is reduced. The baffle is adopted, so that the solvent can be separated from the sewage and the heavy oil, and the separation is convenient; the chute is arranged, so that the heavy oil can be conveniently guided out to the heavy oil outlet.
The utility model has the advantages that:
1. the adsorption system, the desorption system, the drying system and the oil-water separator are used for recovering and purifying organic waste gas, so that the recycling of organic solvent and the standard emission of the waste gas are realized, and remarkable economic benefit and environmental protection benefit are obtained.
2. The device is provided with a first adsorption tower and a second adsorption tower, one adsorption tower is in an adsorption state, the other adsorption tower is in a standby state, and the first adsorption tower and the second adsorption tower are alternately used to realize continuous operation.
3. The first condenser and the second condenser are matched with a gas-liquid separator, so that the condensing effect is better; the noncondensable gas separated by the gas-liquid separator flows back to the organic steam inlet through the circulating pipeline and is condensed again, so that the condensation effect is improved.
4. The oil-water separator can separate out solvent, sewage and heavy oil, so that the substances are recovered, resources are saved, and environmental pollution is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a two-stage condensation system.
FIG. 3 is a schematic view of the oil-water separator.
In the figure:
1. a first adsorption tower; 11. a first activated carbon bed; 12. a second activated carbon bed layer; 13. an exhaust gas inlet; 14. a first exhaust gas outlet; 15. a second exhaust gas outlet; 16. a steam inlet; 17. an organic vapor outlet; 18. a first drying gas inlet; 19. a second drying gas inlet; 20. a drying gas outlet; 2. a steam uniform distributor; 3. a second adsorption column; 4. a first condenser; 41. an output port; 42. a water return port; 5. a second condenser; 6. a gas-liquid separator; 61. a gas outlet; 62. a gas-liquid mixing inlet; 63. a liquid outlet; 64. a circulation pipe; 7. an oil-water separator; 71. a solvent recovery outlet; 72. a sewage outlet; 73. a heavy oil outlet; 74. a baffle plate; 75. a chute; 76. a noncondensable gas outlet; 8. a third condenser; 9. a drying fan; 10. a drying heater; 101. an exhaust gas; 102. and (4) steam.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, an organic waste gas recycling and carbon emission reduction coupling condensing system comprises an adsorption system, a desorption system and a drying system.
As shown in fig. 1, the adsorption system includes a first adsorption tower 1 and a second adsorption tower 3 which have the same structure and are arranged in parallel, and the connection mode of the second adsorption tower 3 with the desorption system and the drying system is the same as that of the first adsorption tower 1 with the desorption system and the drying system. Be equipped with first active carbon bed 11, second active carbon bed 12 from last to down in proper order in first adsorption tower 1, first active carbon bed 11 includes support grid, granule active carbon and the clamp plate that supreme being equipped with in proper order down, support grid and the equal level setting of clamp plate. One side of the first adsorption tower 1 is provided with a waste gas inlet 13 between the first activated carbon bed 11 and the second activated carbon bed 12, and the other side is provided with a first waste gas outlet 14 above the first activated carbon bed 11 and a second waste gas outlet 15 below the second activated carbon bed 12. The upper end of the first adsorption tower 1 is provided with a steam inlet 16, the lower end of the first adsorption tower is provided with an organic steam outlet 17, a steam uniform distributor 2 communicated with the steam inlet 16 is arranged above the first activated carbon layer, the steam uniform distributor 2 comprises a header pipe horizontally arranged and a plurality of branch pipes uniformly distributed along the length direction of the header pipe, and the air outlets of the branch pipes face the first activated carbon bed layer 11. Valves are arranged on the pipeline at the waste gas inlet 13, the pipeline at the waste gas outlet, the pipeline at the steam inlet 16 and the pipeline at the organic steam outlet 17.
As shown in fig. 1 and 2, the desorption system includes a two-stage condensation system including a first condenser 4, a second condenser 5, and a gas-liquid separator 6, and the organic vapor inlet 16 of the first condenser 4 is communicated with the organic vapor outlet 17 of the first adsorption tower 1 and the organic vapor outlet 17 of the second adsorption tower 3, respectively. An output port 41 of the external circulating cooling water is respectively communicated with a water inlet of the first condenser 4 and a water inlet of the second condenser 5, and a return port 42 of the external circulating cooling water is respectively communicated with a water outlet of the first condenser 4 and a water outlet of the second condenser 5. The upper end of the gas-liquid separator 6 is provided with a gas outlet 61, one side of the gas-liquid separator is provided with a gas-liquid mixing inlet 62, the other side of the gas-liquid separator is provided with a liquid outlet 63, the gas outlet 61 is communicated with the organic steam inlet through a circulating pipe 64, the gas-liquid mixing inlet 62 is communicated with the gas outlet of the first condenser 4 through a pipeline, the liquid outlet 63 is communicated with the condensate inlet of the second condenser 5 through a pipeline, and the condensate outlet of the second condenser 5 is communicated with the oil-water separator 7. The upper end of the oil-water separator 7 is provided with a non-condensable gas outlet 76, and the non-condensable gas outlet 76 is communicated with the waste gas inlet 13 through a non-condensable gas pipeline. A solvent recovery outlet 71 is arranged on one side of the oil-water separator 7, a sewage outlet 72 and a heavy oil outlet 73 are sequentially arranged in the other side of the oil-water separator from top to bottom, a baffle 74 suitable for separating the solvent recovery outlet 71 from the sewage outlet 72 is vertically arranged in the oil-water separator 7, a chute 75 is arranged in the bottom of the oil-water separator 7, and the lowest end of the chute 75 faces the heavy oil outlet 73.
As shown in fig. 1 and fig. 3, the drying system includes a drying blower 9 and a drying heater 10 disposed on an air outlet duct of the drying blower 9, and a high efficiency filter may be further disposed at an inlet of the drying blower 9. One side of first adsorption tower 1 is from last to being equipped with first dry gas entry 18 and second dry gas entry 19 down in proper order, and first dry gas entry 18 is located the top of first active carbon bed 11, and second dry gas entry 19 is located the below of second active carbon bed 12, and first dry gas entry 18, second dry gas entry 19 respectively with dry heater 10 air outlet intercommunication, the opposite side of first adsorption tower 1 is equipped with the dry gas export 20 that is located between first active carbon bed 11 and the second active carbon bed 12. First condenser 4 department is equipped with third condenser 8, and the delivery outlet 41 of outside recirculated cooling water and the water inlet intercommunication of third condenser 8, the return water mouth 42 of outside recirculated cooling water and the delivery outlet intercommunication of third condenser 8, dry gas export 20 and the dry gas entry intercommunication of third condenser 8, the gas outlet and the noncondensable gas pipeline intercommunication of third condenser 8. Valves are arranged on the pipeline at the first dry gas inlet 18, the pipeline at the second dry gas inlet 19 and the pipeline at the dry gas outlet 20
In view of the above, it is desirable to provide,
adsorption: before use, all valves on the first adsorption tower 1 are opened, and all valves on the second adsorption tower 3 are closed; waste gas 101 enters the first adsorption tower 1 from a waste gas inlet 13, organic gas is adsorbed on the surface of activated carbon through the first activated carbon bed layer 11 and the second activated carbon bed layer 12, organic matters in the waste gas 101 are removed, and then the waste gas is discharged into a chimney from the first waste gas outlet 14 and the second waste gas outlet 15 respectively, so that the effect of purifying the gas is achieved. When the adsorption of the first adsorption tower 1 is close to saturation, the desorption treatment is started, each valve on the first adsorption tower 1 is closed, each valve on the second adsorption tower 3 is opened, and the waste gas 101 is switched to the second adsorption tower 3 to continue the adsorption treatment.
Desorption: the external steam 102 enters the steam uniform distributor 2 from the steam inlet 16, then the activated carbon bed layer is directly heated, organic components adsorbed in the activated carbon are evaporated, the evaporated mixed steam enters the first condenser 4 from the organic steam outlet 17 for cooling, then liquid and non-condensable gas are separated through the gas-liquid separator 6, the liquid enters the second condenser 5 for secondary condensation, the non-condensable gas is introduced into the organic steam inlet 16 through the circulating pipe 64 for mixing and then enters the first condenser 4 again for condensation, and the condensation effect is improved; the condensate condensed by the second condenser 5 enters the oil-water separator 7, the separated sewage enters a sewage station, the separated organic solvent enters a storage tank for recovery, the separated heavy oil is recovered, and the separated non-condensable gas which cannot be condensed is introduced into the adsorption tower from the waste gas inlet 13 after the front end of the non-condensable gas is mixed with the source waste gas 101 through a non-condensable gas pipeline for secondary adsorption.
And (3) drying: in the desorption stage, part of steam is condensed into water and is left on an activated carbon bed layer, the bed layer needs to be dried after desorption is completed, hot air is provided through a drying fan 9, a drying heater 10 heats the hot air to about 60 ℃, then the hot air enters from a first drying air inlet 18 and a second drying air inlet 19 respectively, the water in the activated carbon bed layer is dried, the dried high-humidity hot gas is discharged from a drying air outlet 20 to a third condenser 8 for cooling, the non-condensable gas generated during cooling enters into a non-condensable gas pipeline, and the non-condensable gas is mixed with the source waste gas 101 and then enters into an adsorption tower from a waste gas inlet 13 for secondary adsorption.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (6)
1. An organic waste gas recovery and carbon emission reduction coupling condensation system is characterized in that,
comprises an adsorption system, a desorption system and a drying system,
the adsorption system comprises a first adsorption tower and a second adsorption tower which have the same structure and are arranged in parallel;
a first activated carbon bed layer and a second activated carbon bed layer are sequentially arranged in the first adsorption tower from top to bottom, a waste gas inlet is formed in one side of the first adsorption tower and is positioned between the first activated carbon bed layer and the second activated carbon bed layer, a first waste gas outlet and a second waste gas outlet are sequentially formed in the other side of the first adsorption tower from top to bottom, the first waste gas outlet is positioned above the first activated carbon bed layer, the second waste gas outlet is positioned below the second activated carbon bed layer, a steam inlet is formed in the upper end of the first adsorption tower, and an organic steam outlet is formed in the lower end of the first adsorption tower;
valves are arranged on the pipeline at the waste gas inlet, the pipeline at the waste gas outlet, the pipeline at the steam inlet and the pipeline at the organic steam outlet;
the desorption system comprises a two-stage condensation system, a gas inlet of the two-stage condensation system is respectively communicated with an organic steam outlet of the first adsorption tower and an organic steam outlet of the second adsorption tower, a condensate outlet of the two-stage condensation system is communicated with an oil-water separator, a non-condensable gas outlet is formed in the upper end of the oil-water separator, a solvent recovery outlet is formed in one side of the oil-water separator, and the non-condensable gas outlet is communicated with a waste gas inlet through a non-condensable gas pipeline;
the connection mode of the second adsorption tower, the desorption system and the drying system is the same as that of the first adsorption tower, the desorption system and the drying system.
2. The organic waste gas recovery coupled carbon emission reduction condensation system of claim 1,
the two-stage condensation system comprises a first condenser, a second condenser and a gas-liquid separator;
an organic steam inlet of the first condenser is respectively communicated with an organic steam outlet of the first adsorption tower and an organic steam outlet of the second adsorption tower;
the water return port of the external circulating cooling water is respectively communicated with the water outlet of the first condenser and the water outlet of the second condenser;
the upper end of the gas-liquid separator is provided with a gas outlet, the side wall of the gas-liquid separator is provided with a gas-liquid mixing inlet and a liquid outlet, the gas outlet is communicated with the organic steam inlet through a circulating pipeline, the gas-liquid mixing inlet is communicated with the gas outlet of the first condenser through a pipeline, the liquid outlet is communicated with the condensate inlet of the second condenser through a pipeline, and the condensate outlet of the second condenser is communicated with the condensate inlet of the oil-water separator.
3. The organic waste gas recovery coupled carbon emission reduction condensation system of claim 2,
the drying system comprises a drying fan and a drying heater arranged on an air outlet pipeline of the drying fan;
a first dry air inlet and a second dry air inlet are sequentially arranged on one side of the first adsorption tower from top to bottom, the first dry air inlet is positioned above the first activated carbon bed layer, the second dry air inlet is positioned below the second activated carbon bed layer, the first dry air inlet and the second dry air inlet are respectively communicated with an air outlet of the drying heater, and a dry air outlet positioned between the first activated carbon bed layer and the second activated carbon bed layer is arranged on the other side of the first adsorption tower;
a third condenser is arranged at the first condenser, an output port of external circulating cooling water is communicated with a water inlet of the third condenser, a water return port of the external circulating cooling water is communicated with a water outlet of the third condenser, a drying gas outlet is communicated with a drying gas inlet of the third condenser, and a gas outlet of the third condenser is communicated with a non-condensable gas pipeline;
and valves are arranged on the pipeline at the inlet of the first drying gas, the pipeline at the inlet of the second drying gas and the pipeline at the outlet of the drying gas.
4. The organic waste gas recovery coupled carbon emission reduction condensation system of claim 1,
first active carbon bed includes support grid, granule active carbon and the clamp plate that sets gradually from supreme down, the equal level of support grid and clamp plate sets up.
5. The organic waste gas recovery coupled carbon emission reduction condensation system of claim 4,
be equipped with the steam uniform distributor who communicates with steam inlet in the top of first adsorption tower, steam uniform distributor includes the house steward that the level set up and along house steward length direction a plurality of branch pipes of even interval distribution, and the gas outlet of each branch pipe all faces first active carbon bed.
6. The organic waste gas recovery coupled carbon emission reduction condensation system as claimed in claim 5,
the vertical baffle that is equipped with in the oil water separator, one side that the solvent recovery export was kept away from to the baffle is from last to being equipped with sewage outlet and heavy oil export down in proper order, be equipped with the chute in the bottom of oil water separator, and the least significant end of chute exports towards the heavy oil.
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