CN211562382U - Organic waste gas's recovery processing equipment - Google Patents
Organic waste gas's recovery processing equipment Download PDFInfo
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- CN211562382U CN211562382U CN201922422286.3U CN201922422286U CN211562382U CN 211562382 U CN211562382 U CN 211562382U CN 201922422286 U CN201922422286 U CN 201922422286U CN 211562382 U CN211562382 U CN 211562382U
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Abstract
The utility model discloses an organic waste gas's recovery processing equipment includes: two air inlet devices, four adsorption devices, a high-pressure steam device and a back flushing device. The first air inlet device is used for receiving the organic waste gas; each adsorption device is communicated with the first air inlet device and the second air inlet device and is used for carrying out primary and secondary adsorption on the organic waste gas; each adsorption device is communicated with the high-pressure steam device and is used for desorbing the adsorption device subjected to the primary adsorption process by using high-pressure steam; each adsorption equipment all communicates with the blowback device, and the blowback device is used for cooling the dewatering to the adsorption equipment after the desorption process to adsorption equipment gets into once second grade adsorption process and one-level adsorption process. This equipment can carry out one-level and second grade to organic waste gas and adsorb to can utilize the reverse extraction of blowback device to adsorb the back exhaust organic waste gas and cool down the dewatering to adsorption equipment through the second grade after the desorption process.
Description
Technical Field
The utility model relates to an environmental protection technology field especially relates to an organic waste gas's recovery processing equipment.
Background
With the increasing environmental problems, environmental protection and pollution disposal have received more and more attention. The consequences of atmospheric pollution in environmental pollution are very serious, and the harm to human bodies, animals, plants and weather is very great. There are many factors causing air pollution, such as waste gas generated in industry, domestic stoves and heating boilers, transportation, etc., wherein the industrial pollution is an important source of air pollution.
The waste gas purification mainly refers to the treatment of industrial waste gas generated in industrial places, such as dust particles, smoke and dust, peculiar smell gas and toxic and harmful gas. Common waste gas purification includes factory smoke waste gas purification, workshop dust waste gas purification, organic waste gas purification, acid-base waste gas purification, chemical waste gas purification, odor deodorization purification and the like.
In industrial production, the situation that the atmosphere contains trace volatile organic solutes is often encountered, and if the waste gas is directly discharged into the atmosphere, the environmental pollution is caused, and the loss and waste of energy are caused, so that a waste gas adsorption recycling device must be added at the front end of the discharge of the waste gas. If the traditional incineration mode is adopted to remove the solutes, the following disadvantages are present, namely, the resource is wasted, and certain operation risk is present; secondly, the secondary pollution of the atmosphere is easily caused; and thirdly, the equipment is inconvenient to maintain and repair.
Disclosure of Invention
The utility model aims to solve the technical problem that a recovery processing equipment of organic waste gas is provided.
In order to realize the technical purpose, the utility model adopts the following technical scheme:
an apparatus for recycling organic waste gas, comprising: the device comprises an air inlet device, four adsorption devices, a high-pressure steam device and a back flushing device;
the air inlet device comprises a first air inlet device and a second air inlet device, wherein a first air inlet of the first air inlet device is communicated with an organic waste gas outlet and is used for receiving the organic waste gas and sending the organic waste gas to the adsorption device in a primary adsorption process; the second air inlet device is used for receiving the organic waste gas subjected to the primary adsorption and sending the organic waste gas subjected to the primary adsorption into the adsorption device in the secondary adsorption process;
the adsorption device is used for carrying out primary adsorption and secondary adsorption on the organic waste gas;
the high-pressure steam device is used for desorbing the adsorption device after the secondary adsorption process and the primary adsorption process by using high-pressure steam;
the back flushing device is used for cooling and dewatering the adsorption device after the desorption process so that the adsorption device can enter the next secondary adsorption process and the next primary adsorption process;
the four adsorption devices are respectively in a primary adsorption process, a desorption process, a back flushing process and a secondary adsorption process, and each adsorption device is subjected to process circulation according to the secondary adsorption process, the primary adsorption process, the desorption process and the back flushing process.
Preferably, each of the four adsorption devices is communicated with the air outlet of the first air inlet device through a first air inlet valve, and the first air inlet device can convey the organic waste gas to the corresponding adsorption device through the first air inlet valve of any adsorption device in the primary adsorption process for primary adsorption;
each adsorption device is communicated with an air inlet of a second air inlet device through a secondary adsorption valve, and the second air inlet device can convey organic waste gas subjected to primary adsorption to the second air inlet device through the secondary adsorption valve of any adsorption device in a primary adsorption process;
each adsorption device is communicated with the air outlet of the second air inlet device through a second air inlet valve, and the second air inlet device can also convey the organic waste gas subjected to the primary adsorption to the corresponding adsorption device through the second air inlet valve of any adsorption device in the secondary adsorption process for secondary adsorption;
each adsorption device is communicated with the external atmosphere through an exhaust valve, and any adsorption device in the secondary adsorption process can discharge organic waste gas subjected to secondary adsorption into the external atmosphere through the exhaust valve;
each adsorption device is communicated with an air outlet of the high-pressure steam device through a steam inlet valve, and the high-pressure steam device can convey high-pressure steam into the corresponding adsorption device through the steam inlet valve of any adsorption device in a desorption process to desorb the adsorption device;
each adsorption device is communicated with an air inlet of the back flushing device through a back flushing valve; an air outlet of the back flushing device is communicated with a second air inlet of the first air inlet device; the back flushing device can reversely extract the organic waste gas exhausted after the secondary adsorption through an emptying valve and a back flushing valve of any adsorption device in the back flushing process, so that the organic waste gas exhausted after the secondary adsorption passes through the adsorption device in the back flushing process to cool and dewater the adsorption device, and the organic waste gas obtained after the adsorption device is cooled and dewatered is conveyed into the first air inlet device.
Preferably, the first air inlet device comprises a first air inlet fan and a filter, an inlet of the filter is communicated with the exhaust port of the organic waste gas, an outlet of the filter is communicated with an inlet of the first air inlet fan, and each adsorption device is communicated with an outlet of the first air inlet fan through the first air inlet valve.
Preferably, the second air inlet device comprises a secondary fan and a secondary air supplementing filter, wherein the inlet of the secondary air supplementing filter is communicated with the outside air, and the outlet of the secondary air supplementing filter is communicated with the inlet of the secondary fan;
each adsorption equipment all through one the second grade adsorption valve with the entry intercommunication of secondary fan, each adsorption equipment all through the second admission valve with the export intercommunication of secondary fan.
Preferably, the first air inlet valve and the second air inlet valve of the adsorption device are realized through two valve positions of an air inlet three-way valve, and the air outlet of the first air inlet device and the air outlet of the second air inlet device are respectively communicated with the adsorption device through the two valve positions of the air inlet three-way valve and the air inlet two-way valve.
Preferably, the evacuation valve of the adsorption device is a two-way valve, and is used for evacuating the waste gas after the secondary adsorption in the secondary adsorption process, and for sucking the organic waste gas discharged after the secondary adsorption into the adsorption device in the back flushing process.
Wherein, preferably, the device also comprises a condensing, separating and aerating device; the condensation, separation and aeration device comprises a primary condenser, a secondary condenser, a separation tank and an aeration tank;
the soft connection part at the upper part of the air inlet two-way valve of each adsorption device is communicated with an air inlet of a primary condenser, a liquid outlet and a gas outlet of the primary condenser are respectively communicated with a liquid inlet and a gas inlet of a secondary condenser, and the primary condenser and the secondary condenser can condense high-temperature mixed gas formed after any adsorption device is desorbed;
the liquid outlet of the secondary condenser is communicated with the inlet of the separation tank; the separation tank is used for separating organic solutes from water in the organic liquid, the separated water is conveyed to the aeration tank for aeration treatment, and the separated organic solutes are recovered;
and a gas outlet of the secondary condenser is communicated with a third gas inlet of the first gas inlet device.
Preferably, the back-blowing device comprises a back-blowing fan and a water removal device, and the water removal device is arranged between the back-blowing fan and a back-blowing valve of the adsorption device;
the liquid outlet of the adsorption device and the liquid outlet of the dewatering device are also communicated with the inlet of the separation tank, and the liquid outlet of the adsorption device and the liquid outlet of the dewatering device are used for conveying the condensed liquid of the adsorption device and the condensed liquid of the dewatering device to the separation tank for separation.
The utility model provides an organic waste gas's recovery processing equipment, it has four adsorption equipment, and each adsorption equipment all carries out the process circulation according to second grade adsorption process, first grade adsorption process, desorption process and blowback process to guarantee that at arbitrary time, four adsorption equipment are in different processes respectively, thereby can handle organic waste gas uninterruptedly, and the organic waste gas that discharges after second grade absorption can not cause the pollution to external atmosphere; adsorption equipment need carry out the desorption to adsorption equipment after second grade adsorption process and one-level adsorption process in proper order, and adsorption equipment after the desorption need be through just adsorbing organic waste gas once more after the cooling dewatering. The utility model provides a recovery processing equipment still has the blowback device, utilizes the organic waste gas that the blowback device can reverse extraction second grade adsorb back emission to utilize this organic waste gas to carry out the forced air cooling to the adsorption equipment after the desorption process, thereby reach the purpose to the adsorption equipment cooling dewatering. The organic waste gas after the secondary adsorption is clean air, so that secondary pollution to the adsorption device can not be caused.
Drawings
Fig. 1 is a schematic structural diagram of an organic waste gas recycling device provided by the present invention;
FIG. 2 is a schematic view of the structure of the adsorption apparatus of FIG. 1;
FIG. 3 is a schematic view showing the structure of the adsorption process in FIG. 1;
FIG. 4 is a schematic structural view of the intake device of FIG. 1;
FIG. 5 is a schematic view of the desorption step shown in FIG. 1;
FIG. 6 is a schematic structural diagram of a blowback process in FIG. 1;
FIG. 7 is a schematic diagram of the configuration of the condensation aeration apparatus of FIG. 1;
fig. 8 is a flow chart of a method for recycling organic waste gas by using the recycling device of the present invention.
In the drawings, each reference numeral denotes:
1. an air intake device; 11. a first air intake device; 12. a second air intake device; 111. a first air intake fan; 112. a filter; 121. a secondary fan; 122. a secondary air supplement filter;
2. an adsorption device; 20. an absorbent core; 21. an intake three-way valve; 22. a secondary adsorption valve; 23. an evacuation valve; 24. a steam inlet valve; 25. a blowback valve; 26. an upper baffle valve; 27. an air inlet two-way valve;
3. a high pressure steam device;
4. a back flushing device; 41. a back-blowing fan; 42. a water removal device;
5. a condensation aeration device; 51A, a primary condenser; 51B, a secondary condenser; 52. a separation tank; 53. an aeration tank.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the recycling equipment for organic waste gas provided by the present invention includes an air inlet device 1, four adsorption devices 2, a high pressure steam device 3, and a back-flushing device 4.
The air inlet device 1 comprises a first air inlet device 11 and a second air inlet device 12, wherein a first air inlet of the first air inlet device 11 is communicated with an outlet of the organic waste gas, and is used for receiving the organic waste gas and sending the organic waste gas to the adsorption device 2 in a primary adsorption process; the organic off-gas is sent through a line L1 in fig. 1. The second air inlet device 12 is used for receiving the organic waste gas subjected to the first-stage adsorption and sending the organic waste gas subjected to the first-stage adsorption into the adsorption device 2 in the second-stage adsorption process; the conveying route of the organic waste gas after the primary adsorption into the second air inlet device 12 is shown as a line L2 in FIG. 1, and the conveying route of the organic waste gas from the second air inlet device 12 into the adsorption device 2 in the secondary adsorption process is shown as a line L3 in FIG. 1. The adsorption device 2 is used for carrying out primary adsorption and secondary adsorption on the organic waste gas and discharging the organic waste gas after the primary adsorption and the secondary adsorption; the transport route of the organic offgas discharged from the adsorption apparatus in the secondary adsorption process is shown as L4 in fig. 1. The high-pressure steam device 3 is used for desorbing the adsorption device 2 (namely the adsorption device 2 in the desorption process) after the secondary adsorption process and the primary adsorption process by using high-pressure steam; the high-pressure steam is delivered through a line L5, and the desorbed gas is delivered through a line L6. The back flushing device 4 is used for cooling and dewatering the adsorption device 2 (namely the adsorption device 2 in the back flushing process) after the desorption process so that the adsorption device 2 can enter the next secondary adsorption process and the next primary adsorption process; the conveying route of the blowback gas in the blowback process is shown as L7 in fig. 1.
In the organic waste gas recovery processing apparatus shown in fig. 1, four adsorption devices 2 are respectively in a secondary adsorption process, a primary adsorption process, a desorption process and a back flushing process, and each adsorption device 2 is subjected to process circulation according to the secondary adsorption process, the primary adsorption process, the desorption process and the back flushing process.
Specifically, referring to fig. 1 and 2, each of the adsorption devices 2 is communicated with an air outlet of a first air inlet device 11 through a first air inlet valve, and the first air inlet device 11 can convey the organic waste gas to the corresponding adsorption device 2 for primary adsorption in a state that the first air inlet valve of any adsorption device 2 in primary adsorption is opened. Each adsorption device 2 is communicated with the air inlet of the second air inlet device 12 through a secondary adsorption valve 22, and each adsorption device 2 is communicated with the air outlet of the second air inlet device 12 through a second air inlet valve; the second air intake device 12 is capable of delivering the organic waste gas after the first adsorption to the second air intake device 12 in a state where the second adsorption valve 22 of any one of the adsorption devices 2 in the first adsorption step is opened, and capable of delivering the organic waste gas after the first adsorption to the corresponding adsorption device 2 for the second adsorption in a state where the second air intake valve of any one of the adsorption devices 2 in the second adsorption step is opened. Each of the adsorption devices 2 is communicated with the external atmosphere through an exhaust valve 23, and any adsorption device 2 in the secondary adsorption process can discharge the organic waste gas subjected to the secondary adsorption treatment to the external atmosphere in a state that the exhaust valve 23 is opened. Preferably, the first intake valve and the second intake valve of the same adsorption device 2 may be implemented by two valve positions of the intake three-way valve 21. In the embodiment shown in fig. 2, the air outlet of the air inlet three-way valve 21 is communicated with the housing of the adsorption device through an air inlet two-way valve 27; an upper baffle valve 26 is arranged on the box body of the adsorption device 2, and when any valve position of the first-stage adsorption position and the second-stage adsorption position of the air inlet three-way valve 21 is opened, the air inlet two-way valve 27 and the upper baffle valve 26 need to be opened simultaneously. When the first-stage adsorption position of the intake three-way valve 21 is opened, the second-stage adsorption valve 22 needs to be opened at the same time to perform first-stage adsorption; when the secondary adsorption position of the intake three-way valve 21 is opened, the evacuation valve 23 needs to be opened at the same time to perform secondary adsorption. In other embodiments, the intake two-way valve 27 may be omitted depending on the arrangement of the first intake valve, the second intake valve, or the intake three-way valve. In the processes of the primary adsorption and the secondary adsorption, the steam inlet valve 24 and the back-flushing valve 25 are closed.
Each of the adsorption devices 2 is communicated with the gas outlet of the high-pressure steam device 3 through a steam inlet valve 24, and the high-pressure steam device 3 can convey high-pressure steam to the corresponding adsorption device 2 in a state that the steam inlet valve 24 of the adsorption device 2 (i.e., the adsorption device 2 in a desorption state) after passing through the secondary adsorption process and the primary adsorption process is opened, so as to desorb the adsorption device 2. The desorption is when the adsorption core 20 among the adsorption equipment 2 adsorbs organic waste gas and reaches the back of saturation, uses high-pressure steam to wash adsorption core 20 of adsorption equipment 2 for the organic solute of adsorption on adsorption core 20 breaks away from adsorption core 20. When the high-pressure steam device 3 conveys high-pressure steam into the adsorption device 2 in a desorption state, other valves of the adsorption device 2 are closed, and the box body forms a closed space; the high pressure steam containing organic solute generated in the desorption process is delivered to the condensing, separating and aerating device 5 for recycling treatment through the soft connection part at the upper part of the air inlet two-way valve 27, or the desorbed gas is delivered to the condensing, separating and aerating device 5 for recycling treatment through the exhaust valve independently arranged on the adsorption device 2.
Each adsorption device 2 is communicated with an air inlet of the back flushing device 4 through a back flushing valve 25; and the air outlet of the back blowing device 4 is communicated with the second air inlet of the first air inlet device 11. The back flushing device 4 can reversely pump the organic waste gas exhausted after the second-stage adsorption in a state that the back flushing valve 25, the upper baffle valve 26 and the emptying valve 23 of the adsorption device after the desorption process are simultaneously opened, so that the organic waste gas exhausted after the second-stage adsorption (namely, clean air meeting the emission standard) passes through the adsorption device 2 after the desorption to cool and dewater the adsorption device 2, and the organic waste gas after the adsorption device 2 is cooled and dewatered is conveyed into the first air inlet device 11. When the blowback valve 25 and the evacuation valve 23 are opened, the upper baffle valve 26 needs to be opened, and the evacuation valve 23, the steam inlet valve 24 and the air inlet two-way valve 27 need to be closed, so that the organic waste gas after the second-stage adsorption can enter the adsorption device 2.
The structure of the adsorption device provided by the present embodiment is shown in fig. 2. Each adsorption device 2 comprises a box body, an adsorption core 20 is arranged in the box body, and an air inlet three-way valve 21, an air inlet two-way valve 27, an upper baffle valve 26, a secondary adsorption valve 22, an exhaust valve 23, a steam inlet valve 24 and a blowback valve 25 are arranged on the box body. The operating state of the valves of each adsorption apparatus 2 in the different processes is shown in table 1.
Table 1 table of valve operating states of adsorption apparatus 2
The valve opening state and the gas flow principle corresponding to the first-stage adsorption process, the second-stage adsorption process, the desorption process and the back-flushing process are described below with reference to the valve operation state table shown in table 1.
In this embodiment, reference is made to fig. 3, which is a schematic flow chart of a primary adsorption step and a secondary adsorption step, and the direction of arrows in the figure is the flow direction of gas. In fig. 3, the adsorption apparatus 2 located on the left side is in the two-stage adsorption step, the adsorption apparatus 2 located on the right side is in the one-stage adsorption step, and the organic waste gas is treated by the two adsorption apparatuses 2 simultaneously, so that the organic waste gas can be treated without interruption. Specifically, the first air inlet valve (which may also be the first-stage adsorption position of the air inlet three-way valve 21 and the air inlet two-way valve 27), the upper baffle valve 26 and the second-stage adsorption valve 22 of the adsorption device 2 on the right side are opened, and the other valves are closed; the second air inlet valve (which may also be the secondary adsorption position of the air inlet three-way valve 21 and the air inlet two-way valve 27), the upper baffle valve 26 and the exhaust valve 23 of the adsorption device 2 on the left side are opened, and the other valves are closed. When the first gas inlet device 11 receives the organic waste gas discharged from the factory, the first gas inlet device 11 transmits the organic waste gas into the right adsorption device 2 for primary adsorption through the gas inlet three-way valve 21 and the gas inlet two-way valve 27 of the right adsorption device 2 (see a line L1 in fig. 1); in the first-stage adsorption process, the organic waste gas after the first-stage adsorption enters the second air inlet device 12 through the upper baffle valve 26 and the second-stage adsorption valve 22 of the right-side adsorption device 2 (see a line L2 in FIG. 1); then, the organic waste gas after the first-stage adsorption is delivered from the second gas inlet device 12 to the adsorption device 2 on the left side through the gas inlet three-way valve 21 and the gas inlet two-way valve 27 of the adsorption device 2 on the left side for second-stage adsorption (see a line L3 in fig. 1); in the second-stage adsorption process, the organic waste gas after the second-stage adsorption is discharged to the outside atmosphere through the evacuation valve 23 of the adsorption device 2 located on the left side (see the line L4 in fig. 1), and at this time, the organic waste gas after the second-stage adsorption is already clean air and does not pollute the outside atmosphere.
In the above embodiment, as shown with reference to fig. 3 and 4, the air intake device 1 includes the first air intake device 11 and the second air intake device 12. The first air inlet device 11 is responsible for conveying the waste gas discharged by the factory into the adsorption device 2 in the primary adsorption process; the second air inlet device 12 is responsible for conveying the organic waste gas after the first-stage adsorption to the adsorption device 2 in the second-stage adsorption process; therefore, the organic waste gas can be continuously conveyed by a factory, and the treatment efficiency of the organic waste gas is improved.
Preferably, the first air inlet device 11 includes a first air inlet fan 111 and a filter 112, an inlet of the filter 112 is communicated with the exhaust port of the organic waste gas, an outlet of the filter 112 is communicated with an inlet of the first air inlet fan 111, and each of the adsorption devices 2 is communicated with an outlet of the first air inlet fan 111 through a first air inlet valve (shown as a port corresponding to a primary adsorption position in the air inlet three-way valve 21). The filter 112 is used for primary filtering of organic waste gas discharged from a factory, and can filter out some solid particles, thereby facilitating the purification process at a later stage.
Preferably, the second air intake device 12 includes a secondary air blower 121 and a secondary air supplement filter 122, an inlet of the secondary air supplement filter 122 is connected with the outside air, and an outlet of the secondary air supplement filter 122 is communicated with an inlet of the secondary air blower 121; each of the adsorption devices 2 is communicated with the inlet of the secondary air blower 121 through one of the secondary adsorption valves 22, and each of the adsorption devices 2 is communicated with the outlet of the secondary air blower 121 through one of the second air intake valves (shown as a port corresponding to a secondary adsorption position in the intake three-way valve 21). Through set up second grade air make-up filter 122 before second grade fan 121, can extract the outside air and mend into in second grade fan 121 to the organic waste gas amount of wind after the one-level absorption that the compensation second grade fan was many out adjusts the inside temperature of adsorption equipment 2 in the second grade absorption process.
In this embodiment, reference is made to fig. 5, which is a schematic view of the operation flow of the desorption step, and the direction of the arrow in the figure is the flow direction of the gas. In fig. 5, the adsorption device 2 has been sequentially subjected to a secondary adsorption process and a primary adsorption process, and at this time, since the adsorption core 20 of the adsorption device 2 is saturated, the adsorption device 2 needs to be desorbed, and then the organic waste gas can be adsorbed again. Specifically, the steam inlet valve 24 of the adsorption device 2 is opened, the upper baffle valve 26 is closed, the two-way air inlet valve 27 is closed, the high-pressure steam device 3 delivers high-pressure steam into the adsorption device 2 through the steam inlet valve 24 (see a line L5 in fig. 1), and the adsorption core 20 of the adsorption device 2 is desorbed, so that the organic solute adsorbed on the adsorption core 20 is desorbed from the adsorption core 20. The high-pressure steam (i.e., desorption gas) containing organic solute generated in the desorption process is delivered to the condensing, separating and aerating apparatus 5 (see line L6 of fig. 1) through the flexible joint at the upper part of the gas inlet two-way valve 27 for recovery treatment.
In this embodiment, referring to fig. 6, a schematic flow chart of the blowback process is shown, and the direction of the arrow in the drawing is the flowing direction of the gas. In fig. 6, the adsorption device 2 has been sequentially subjected to a secondary adsorption process, a primary adsorption process and a desorption process, and at this time, since the adsorption core 20 of the adsorption device 2 is cleaned by high-pressure steam, the adsorption core 20 is in a high-temperature state and contains much moisture, in order to ensure the adsorption efficiency of the adsorption core 20, the adsorption core 20 needs to be cooled and dehydrated. Specifically, the blowback valve 25 and the evacuation valve 23 of the adsorption device 2 are simultaneously opened, the upper flapper valve 26 is opened, and the two-way air inlet valve 27, the secondary adsorption valve 22 and the steam inlet valve 24 are closed. The back flushing device 4 reversely pumps the organic waste gas exhausted after the secondary adsorption, so that the organic waste gas exhausted after the secondary adsorption passes through the adsorption device 2, the adsorption device 2 is cooled and dewatered in an air cooling mode, and the organic waste gas obtained after the adsorption device 2 is cooled and dewatered is conveyed into the first air inlet device 11 (see a line L7 in fig. 1) for mixing with the organic waste gas exhausted from a factory and then entering the adsorption device 2 in a primary adsorption process. The evacuation valve 23 of the adsorption device is a two-way valve, and is used for evacuating the waste gas after the secondary adsorption in the secondary adsorption process, and sucking the organic waste gas discharged after the secondary adsorption into the adsorption device 2 in the back-flushing process.
As shown in fig. 6, the blowback device 4 includes a blowback fan 41 and a water removal device 42, and the water removal device 42 is disposed between the blowback fan 41 and the blowback valve 25 of the adsorption device 2. The water removal device 42 is used for removing water from the gas after the back-blowing process, and the condensed liquid in the water removal device 42 is sent to the separation tank 52 (see line L10 in fig. 1) in the condensation, separation and aeration device 5 for separation and recovery of the organic solute and water.
In this embodiment, the recovery processing equipment utilizes blowback device 4 can reverse the organic waste gas of the emission after the extraction second grade is adsorbed to utilize this organic waste gas to carry out the forced air cooling to adsorption equipment 2 after the desorption, in order to reach the purpose to adsorption equipment 2 cooling dewatering, because the organic waste gas after the second grade is adsorbed is clean air, consequently can not cause secondary pollution to adsorption equipment 2. Meanwhile, the organic waste gas discharged after the secondary adsorption can not pollute the outside atmosphere.
Therefore, the four adsorption devices 2 in the recovery processing equipment are respectively in the secondary adsorption process, the primary adsorption process, the desorption process and the back flushing process, and each adsorption device 2 is subjected to process circulation according to the secondary adsorption process, the primary adsorption process, the desorption process and the back flushing process, so that the four adsorption devices 2 are respectively in different processes at any time, namely the equipment can uninterruptedly process organic waste gas, discharge the organic waste gas subjected to secondary adsorption, and the back flushing device 4 can also continuously and reversely extract the organic waste gas, cool and remove water from the adsorption devices 2 subjected to the desorption process, so that the equipment can continuously operate, and the condition of interruption can not occur.
As shown in fig. 1 and 7, the organic waste gas recovery apparatus further includes a condensing, separating and aerating device 5. The condensation, separation and aeration device 5 is used for carrying out condensation, separation and aeration treatment on the high-temperature mixed gas formed after desorption.
After the desorption process is completed, since the adsorption device 2 is cleaned by the high-pressure steam, the organic solute adsorbed on the adsorption core 20 is separated from the adsorption core 20, thereby forming a high-pressure mixed gas with heat and residual recovered substances. The mixed gas contains organic solute, and the direct discharge not only causes energy waste but also may pollute the environment, so that the mixed gas needs to be condensed, separated and aerated.
Specifically, each of the adsorption devices 2 is communicated with the condensation, separation and aeration device 5 through a separate pipeline, and the condensation, separation and aeration device 5 can condense, separate and aerate the high-temperature mixed gas formed after desorption of any one of the adsorption devices 2. The condensation treatment can cool the high-temperature mixed gas into organic liquid, the separation treatment can separate the organic solvent which is not mutually dissolved with water from the organic liquid, the organic solvent is directly recovered through a solvent pump, and the water containing a trace amount of organic solvent after the separation can separate the organic solute in the organic liquid through the aeration treatment, so that pollution-free wastewater is formed. After the condensation treatment and the aeration treatment of the condensation aeration device 5, the separated organic solute can be returned to the factory for utilization again, and pollution-free waste water can be directly discharged, so that the energy utilization rate is improved, and the pollution to the environment is avoided.
Referring to fig. 7, in the above embodiment, the condensation aeration apparatus 5 includes the primary condenser 51A, the secondary condenser 51B, the separation tank 52, and the aeration tank 53. The air inlet of the primary condenser 51A is communicated with the soft joint at the upper part of the air inlet two-way valve 27 of each adsorption device 2 through a pipeline (see L6 in fig. 1), and the liquid and gas inlets of the secondary condenser 51B are respectively communicated with the liquid outlet and the gas outlet of the primary condenser 51A; the liquid outlet of the secondary condenser 51B is communicated with the inlet of the separation tank 52 (see line L8 in fig. 1), and the gas outlet of the secondary condenser 51B is communicated with the third gas inlet of the first gas inlet means (see line L9 in fig. 1). Two liquid outlets of the separation tank 53 are respectively communicated with an inlet of the aeration unit 52 and a recovery device of the organic solute. The gas outlet of the separation tank 53 is simultaneously communicated with the third gas inlet of the first gas inlet device 11 (see the line L9 in fig. 1), and the gas separated from the separation tank 53 is also returned to the first gas inlet device 11 through a pipeline for primary adsorption and secondary adsorption.
The first-stage condenser 51A and the second-stage condenser 51B can condense a high-temperature mixed gas formed after desorption of any one of the adsorption devices 2 to form an organic liquid, and deliver the organic liquid to the separation tank 52. The separation tank 52 can separate organic solute from water in the organic liquid formed after condensation, the separated organic solute is conveyed to a workshop of a factory building for recycling, the separated water containing trace organic solute is conveyed to the aeration tank 53 for aeration treatment, pollution-free wastewater and waste gas are formed, the pollution-free wastewater can be directly discharged, and the waste gas is conveyed to the first air inlet device 11 through a pipeline for recycling adsorption again, so that the discharge of unqualified waste gas is prevented.
In the above embodiment, the gas outlet of the secondary condenser 51B is communicated with the third gas inlet of the first gas inlet 11 (see the line L9 in fig. 1), and the secondary condenser 51B can convey the non-condensed gas formed after condensation into the first gas inlet 11. The non-condensed gas refers to a part of organic waste gas which is mixed in the refrigerating system and is not condensed into liquid. When these non-condensed gases enter the refrigeration system, they are retained in the first-stage condenser 51A and the second-stage condenser 51B, which affects the condensation of the refrigerant and reduces the cooling capacity. By conveying the non-condensed gas into the first air intake device 11, the gas can be discharged to the outside atmosphere after being subjected to primary adsorption and secondary adsorption again, so that the influence on the primary condenser 51A and the secondary condenser 51B is avoided, and the refrigeration efficiency of the primary condenser 51A and the secondary condenser 51B is improved.
Further, in the above-mentioned apparatus for recovering and treating organic waste gas, a liquid outlet is provided at a lower portion of each of the adsorption devices 2, a liquid outlet is also provided at a lower portion of the water removal device 42, and the liquid outlet of the adsorption device 2 and the liquid outlet of the water removal device 42 are also communicated with an inlet of the separation tank 53 (see line L10), so as to convey the condensed liquid in the adsorption device 2 and the condensed liquid in the water removal device 42 to the separation tank 52 for separation, and then perform the recovery and aeration treatment.
Referring to fig. 8, a method for recycling organic waste gas by using the recycling device for organic waste gas provided by the present invention is shown. In fig. 8, the process alternation process of each adsorption apparatus is shown by solid lines, and the process of the purification treatment of the exhaust gas discharged from the plant is shown by broken lines.
The method for recycling and treating the organic waste gas by using the organic waste gas recycling and treating equipment comprises the following steps:
s10, a first-stage adsorption process; the first-stage adsorption process specifically comprises the following steps:
conveying the organic waste gas to an adsorption device 2 in a first-stage adsorption process through a first air inlet device 11, performing first-stage adsorption on the organic waste gas, and conveying the organic waste gas subjected to the first-stage adsorption to a second air inlet device 12;
s20, the adsorption device after the first-stage adsorption enters a desorption process; the desorption process specifically includes:
high-pressure steam is conveyed into the adsorption device 2 in the desorption process through the high-pressure steam device 3, and the adsorption device 2 in the desorption process is desorbed;
s30, the desorbed adsorption device 2 enters a blowback process; the back flushing process specifically comprises the following steps:
reversely extracting the discharged organic waste gas after the secondary adsorption through a back flushing device 4, enabling the discharged organic waste gas after the secondary adsorption to pass through the adsorption device 2 in a back flushing process, and cooling and dewatering the adsorption device 2 in the back flushing process;
s40, the adsorption device after the back flushing process enters a secondary adsorption process; the secondary adsorption process specifically comprises:
the organic waste gas after the first-stage adsorption is conveyed to the adsorption device 2 in the second-stage adsorption process through the second air inlet device 12, the organic waste gas after the first-stage adsorption is subjected to second-stage adsorption, and the organic waste gas after the second-stage adsorption is directly discharged to the outside atmosphere;
the adsorption apparatus 2 after the second adsorption step enters the first adsorption step, and the process is circulated.
The method is used for treating the organic waste gas, the waste gas generated from a factory is discharged after primary adsorption and secondary adsorption, the air pollution can be avoided, and meanwhile, the back flushing device 4 can be used for reversely extracting the discharged organic waste gas after the secondary adsorption in the process circulation process to cool and remove water for the adsorption device 2, so that the purification degree and the purification rate of the adsorption device on the organic waste gas are improved.
In the above embodiment, preferably, the desorption process further includes:
s50, condensing and aerating; the condensation aeration process specifically comprises the following steps:
and (3) conveying the high-temperature mixed gas formed after the desorption of the adsorption device 2 in the desorption process to a condensation aeration device 5 for condensation treatment and aeration treatment. By carrying out condensation aeration treatment on the desorbed gas formed in the desorption process, organic solutes and water can be recycled under the condition of avoiding environmental pollution, and the utilization rate of energy is improved.
In summary, the organic waste gas recovery and treatment equipment provided by the utility model can not only effectively adsorb and filter the organic waste gas to form pollution-free waste gas; meanwhile, organic waste gas which can be discharged after secondary adsorption can be used for cooling and dewatering the adsorption device which is subjected to the desorption process, so that the purification degree and the purification rate of the adsorption device on the organic waste gas are improved. And above-mentioned recovery processing equipment of organic waste gas can also carry out recycle to organic solute and water in the organic waste gas, improves energy utilization.
The above is to the utility model provides an organic waste gas's recovery processing equipment has carried out detailed description. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, without departing from the spirit of the present invention, and it is intended to constitute a violation of the patent rights of the present invention and to bear the relevant legal responsibility.
Claims (8)
1. An organic waste gas recovery processing device is characterized by comprising: the device comprises an air inlet device, four adsorption devices, a high-pressure steam device and a back flushing device;
the air inlet device comprises a first air inlet device and a second air inlet device, wherein a first air inlet of the first air inlet device is communicated with an organic waste gas outlet and is used for receiving the organic waste gas and sending the organic waste gas to the adsorption device in a primary adsorption process; the second air inlet device is used for receiving the organic waste gas subjected to the primary adsorption and sending the organic waste gas subjected to the primary adsorption into the adsorption device in the secondary adsorption process;
the adsorption device is used for carrying out primary adsorption and secondary adsorption on the organic waste gas;
the high-pressure steam device is used for desorbing the adsorption device after the secondary adsorption process and the primary adsorption process by using high-pressure steam;
the back flushing device is used for cooling and dewatering the adsorption device after the desorption process so that the adsorption device can enter the next secondary adsorption process and the next primary adsorption process;
the four adsorption devices are respectively in a primary adsorption process, a desorption process, a back flushing process and a secondary adsorption process, and each adsorption device is subjected to process circulation according to the secondary adsorption process, the primary adsorption process, the desorption process and the back flushing process.
2. The apparatus for recycling organic waste gas according to claim 1, wherein:
the first air inlet device can convey the organic waste gas to the corresponding adsorption device for primary adsorption through the first air inlet valve of any adsorption device in the primary adsorption process;
each adsorption device is communicated with an air inlet of a second air inlet device through a secondary adsorption valve, and the second air inlet device can convey organic waste gas subjected to primary adsorption to the second air inlet device through the secondary adsorption valve of any adsorption device in the primary adsorption process;
each adsorption device is communicated with the air outlet of the second air inlet device through a second air inlet valve, and the second air inlet device can also convey the organic waste gas subjected to the primary adsorption to the corresponding adsorption device through the second air inlet valve of any adsorption device in the secondary adsorption process for secondary adsorption;
each adsorption device is communicated with the external atmosphere through an exhaust valve, and any adsorption device in the secondary adsorption process can discharge organic waste gas subjected to secondary adsorption into the external atmosphere through the exhaust valve;
each adsorption device is communicated with an air outlet of the high-pressure steam device through a steam inlet valve, and the high-pressure steam device can convey high-pressure steam into the corresponding adsorption device through the steam inlet valve of any adsorption device in a desorption process to desorb the adsorption device;
each adsorption device is communicated with an air inlet of the back flushing device through a back flushing valve; an air outlet of the back flushing device is communicated with a second air inlet of the first air inlet device; the back flushing device can reversely extract the organic waste gas exhausted after the secondary adsorption through an emptying valve and a back flushing valve of any adsorption device in the back flushing process, so that the organic waste gas exhausted after the secondary adsorption passes through the adsorption device in the back flushing process to cool and dewater the adsorption device, and the organic waste gas obtained after the adsorption device is cooled and dewatered is conveyed into the first air inlet device.
3. The apparatus for recycling organic waste gas according to claim 2, wherein:
the first air inlet device comprises a first air inlet fan and a filter, an inlet of the filter is communicated with an exhaust port of the organic waste gas, an outlet of the filter is communicated with an inlet of the first air inlet fan, and each adsorption device is communicated with an outlet of the first air inlet fan through the first air inlet valve.
4. The apparatus for recycling organic waste gas according to claim 2, wherein:
the second air inlet device comprises a secondary fan and a secondary air supplementing filter, the inlet of the secondary air supplementing filter is communicated with the outside air, and the outlet of the secondary air supplementing filter is communicated with the inlet of the secondary fan;
each adsorption equipment all through one the second grade adsorption valve with the entry intercommunication of secondary fan, each adsorption equipment all through the second admission valve with the export intercommunication of secondary fan.
5. The apparatus for recycling organic waste gas according to claim 2, wherein:
the first air inlet valve and the second air inlet valve of the adsorption device are realized through two valve positions of an air inlet three-way valve, and the air outlet of the first air inlet device and the air outlet of the second air inlet device are communicated with the adsorption device through the two valve positions of the air inlet three-way valve and the air inlet two-way valve respectively.
6. The apparatus for recycling organic waste gas according to claim 2, wherein:
the exhaust valve of the adsorption device is a two-way valve and is used for exhausting the waste gas after the secondary adsorption in the secondary adsorption process and sucking the organic waste gas exhausted after the secondary adsorption into the adsorption device in the back flushing process.
7. The apparatus for recycling organic waste gas according to claim 2, wherein:
also comprises a condensing, separating and aerating device; the condensation, separation and aeration device comprises a primary condenser, a secondary condenser, a separation tank and an aeration tank;
the soft connection part at the upper part of the air inlet two-way valve of each adsorption device is communicated with an air inlet of a primary condenser, a liquid outlet and a gas outlet of the primary condenser are respectively communicated with a liquid inlet and a gas inlet of a secondary condenser, and the primary condenser and the secondary condenser can condense high-temperature mixed gas formed after any adsorption device is desorbed;
the liquid outlet of the secondary condenser is communicated with the inlet of the separation tank; the separation tank is used for separating organic solutes from water in the organic liquid, the separated water is conveyed to the aeration tank for aeration treatment, and the separated organic solutes are recovered;
and a gas outlet of the secondary condenser is communicated with a third gas inlet of the first gas inlet device.
8. The apparatus for recycling organic waste gas according to claim 7, wherein:
the back-blowing device comprises a back-blowing fan and a water removal device, and the water removal device is arranged between the back-blowing fan and a back-blowing valve of the adsorption device;
the liquid outlet of the adsorption device and the liquid outlet of the dewatering device are also communicated with the inlet of the separation tank, and the liquid outlet of the adsorption device and the liquid outlet of the dewatering device are used for conveying the condensed liquid of the adsorption device and the condensed liquid of the dewatering device to the separation tank for separation.
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