CN210786743U - VOCs exhaust-gas treatment system - Google Patents
VOCs exhaust-gas treatment system Download PDFInfo
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- CN210786743U CN210786743U CN201921249365.2U CN201921249365U CN210786743U CN 210786743 U CN210786743 U CN 210786743U CN 201921249365 U CN201921249365 U CN 201921249365U CN 210786743 U CN210786743 U CN 210786743U
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Abstract
The embodiment of the utility model discloses VOCs exhaust-gas treatment system, include: the device comprises an adsorption device, a desorption device, a combustion device, a draught fan, a blower and a transfer device; the adsorption device is internally provided with an adsorption chain row and a tray, and the tray is placed on the adsorption chain row and used for stacking the zeolite molecular sieve; a heater and a desorption chain row are arranged in the desorption device; the combustion device comprises a combustor and a chimney; the induced draft fan is communicated with the air outlet of the adsorption device and discharges the treated waste gas; the blower is communicated with an air inlet of the desorption device; the transfer device comprises a transfer chain row and a driving mechanism, wherein two ends of the transfer chain row are respectively connected with the adsorption chain row and the desorption chain row, and the driving mechanism drives the transfer chain row to rotate and drives the adsorption chain row and the desorption chain row to rotate together through the transfer chain row. The utility model can effectively reduce the content of VOCs in the VOCs waste gas, and protect the environment and the human health; and the zeolite molecular sieve can be taken out from the adsorption device and desorbed and regenerated in a more proper high-temperature environment.
Description
Technical Field
The embodiment of the utility model provides a relate to exhaust-gas treatment system, especially relate to a VOCs exhaust-gas treatment system, belong to the environmental protection and equip technical field.
Background
VOCs are acronyms for Volatile Organic Compounds (Volatile Organic Compounds). VOCs in the general sense refers to volatile organic compounds, and VOCs in the environmental sense refers to active volatile organic compounds, i.e., volatile organic compounds which can cause harm.
In the production and processing processes of the industries such as chemical industry, medicine, coating, semiconductor, printing and the like, a large amount of volatile organic compounds are used, and VOCs waste gas is formed along with the volatilization of the volatile organic compounds. If VOCs waste gas is directly discharged into the atmosphere, the air environment can be seriously polluted, and VOCs gas molecules can react with sunlight, ozone and the like to form harmful organic particles, so that the atmosphere is further damaged, and the environment and human bodies are very adversely affected. Therefore, VOCs waste gas generated in industrial production can be discharged into the atmosphere after being treated, so that the environment and the human health are protected.
In the prior art, the VOCs waste gas usually adopts modes such as condensation to retrieve partial organic matter, also can adopt modes such as absorption to VOCs waste gas to adsorb the enrichment to VOCs molecule wherein, makes the VOCs content in the waste gas reduce, makes it finally reach the standard that can discharge.
The harm of the VOCs enriched by the adsorbent is eliminated through further treatment.
The most commonly used adsorbent for adsorption treatment of VOCs molecules in VOCs waste gas includes zeolite molecular sieves and the like. However, once the adsorption amount of the adsorption material such as zeolite molecular sieve reaches saturation, desorption regeneration treatment is required to be carried out, otherwise, the original adsorption material cannot continuously adsorb the VOCs molecules in the exhaust gas, and the function of purifying the gas is lost.
The existing zeolite molecular sieve regeneration treatment method is to directly blow and desorb by hot air in a VOCs waste gas adsorption treatment device, and practice proves that the treatment method has poor controllability and desorption effect and the regenerated zeolite molecular sieve has short service life.
Although zeolite can resist the high temperature of 800-1000 ℃, the whole prepared zeolite molecular sieve module can resist the temperature of 600 ℃, but because the zeolite molecular sieve is inconvenient to operate in the adsorption treatment device, and because materials such as a treatment device sealing strip and the like do not have high temperature resistance, the method for performing desorption treatment in the adsorption treatment device is restricted by the high temperature resistance, the desorption temperature can not exceed 250 ℃ at most, generally, the actual desorption temperature can only be controlled to be about 180 ℃, so that the high-temperature desorption of the zeolite molecular sieve can not be realized, the desorption of the zeolite molecular sieve is incomplete, the adsorption performance of the regenerated zeolite molecular sieve is influenced, and the service life is also reduced.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a VOCs exhaust-gas treatment system, aim at improve the adsorption efficiency of zeolite molecular sieve of cyclic use, prolong zeolite molecular sieve's life, effectively improve VOCs's adsorption efficiency in the VOCs waste gas, reduce the VOCs content in the discharging gas and the running cost of system, environmental protection.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
a VOCs exhaust treatment system comprising: the device comprises an adsorption device, a desorption device, a combustion device, a draught fan, a blower and a transfer device;
the adsorption device is provided with an air inlet, an air outlet, an adsorption chain row and a tray, wherein the air inlet is arranged at the upper part of the adsorption device and used for receiving the VOCs waste gas, the air outlet is arranged at the lower part of the adsorption device, the adsorption chain row is arranged inside the adsorption device, the tray is placed on the adsorption chain row, and the bottom of the tray is of a net structure and used for stacking zeolite molecular sieves;
the desorption device is provided with an air inlet, an air outlet, a heater and a desorption chain row, the air inlet is arranged at the lower part of the desorption device, the air outlet is arranged at the upper part of the desorption device, the heater is arranged in the desorption device, and the desorption chain row is arranged in the desorption device and is positioned above the heater;
the combustion device comprises a combustor and a chimney, the combustor is provided with an air inlet channel and a discharge flue, the air inlet channel is communicated with the air outlet, and the discharge flue is communicated with the chimney;
the induced draft fan is provided with an induced draft opening and an air outlet, the induced draft opening is communicated with the air outlet, and the air outlet is used for discharging the treated VOCs waste gas;
the blower is provided with a blast port which is communicated with the air inlet;
the transfer device comprises a transfer chain row and a driving mechanism, two ends of the transfer chain row are respectively connected with the adsorption chain row and the desorption chain row, and the driving mechanism drives the transfer chain row to rotate and drives the adsorption chain row and the desorption chain row to rotate together through the transfer chain row.
Furthermore, in the VOCs waste gas treatment system, the number of the adsorption devices is at least two, and each adsorption device is also provided with an air inlet valve and an air outlet valve, wherein the air inlet valve is installed on the air inlet, and the air outlet valve is installed below the air outlet and communicated with the air induction port;
the adsorption devices are arranged around the desorption devices, the transfer devices are arranged between the adsorption devices and the desorption devices, two ends of a shifting chain row of each transfer device are respectively connected with the adsorption chain row of each adsorption device and the desorption chain row of each desorption device, and under the driving of a driving mechanism of each transfer device, the shifting chain rows respectively rotate and respectively drive the adsorption chain row and the desorption chain row which are connected with the shifting chain row to rotate together.
Further, the VOCs exhaust-gas treatment system still includes: a drying device and a filtering device;
the drying device is provided with a waste gas inlet and a waste gas outlet, and the waste gas outlet is communicated with the air inlet or the air inlet valve;
the filter equipment is equipped with and filters import and filtration export, it is used for receiving VOCs waste gas to filter the import, filter the export with waste gas import intercommunication.
As a feasible technical scheme, the drying device is an adsorption dryer, a drying agent is filled in the adsorption dryer, and the drying agent is one or a mixture of more of molecular sieve, silica gel, activated carbon and anhydrous calcium chloride.
The filtering device includes: the device comprises a box body, a primary filter, a medium-efficiency filter and a high-efficiency filter;
the filter import with the filter export sets up respectively the both sides of box, primary filter sets up in the box filter import one side, high efficiency filter sets up in the box filter export one side, secondary filter sets up primary filter with between the high efficiency filter in the box.
Further, the primary filter is formed by overlapping a stainless steel wire mesh, the intermediate filter is made of filter bags, and the high-efficiency filter is formed by overlapping filter paper.
Further, the VOCs exhaust-gas treatment system still includes: a measurement and control device;
the measurement and control device comprises: the system comprises a gas concentration detector, a gas temperature detector, a fan operation controller, a temperature controller and a central controller;
the gas concentration detector is used for detecting the gas concentration of VOCs;
the gas temperature detector is arranged between the heater and the desorption chain row;
the fan operation controller is arranged on the induced draft fan and the blower;
the temperature controller is mounted on the heater;
the central controller is electrically connected or in signal connection with the gas concentration detector, the gas temperature detector, the fan operation controller and the temperature controller respectively.
As a feasible technical scheme, the gas concentration detector is a VOCs gas concentration detector, the gas temperature detector is a thermal resistor/thermocouple temperature detector, the fan operation controller is a programmable stepper motor controller, the temperature controller is a silicon controlled electric heating controller, and the central controller is a programmable logic controller.
Based on the above technical scheme can know, the utility model discloses beneficial effect and showing the progress and lie in:
(1) the embodiment of the utility model provides a VOCs waste gas treatment system, through the specific combination of adsorption equipment, desorption device, burner, draught fan, air-blower and transfer device, can adsorb, enrich and burn the purification with VOCs molecule in the VOCs waste gas effectively, reduce the VOCs content in the VOCs waste gas, the environmental protection and the life health;
(2) the embodiment of the utility model provides a VOCs exhaust-gas treatment system can take out adsorbent zeolite molecular sieve from the body of adsorption equipment, carries out high temperature desorption regeneration in more suitable environment, under the prerequisite of guaranteeing equipment and personal safety, makes zeolite molecular sieve can obtain comparatively thorough desorption, obtains satisfying regeneration effect to increase of service life, reduce the running cost of system, improve economic benefits;
(3) the embodiment of the utility model provides a VOCs exhaust-gas treatment system, modern design, compact structure, rationally distributed, make convenience, operation safety, and can be according to actual need, adjustment and the setting and the operational mode of expansion system satisfy the needs of different operating modes, consequently, have popularization and application and worth.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that need to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description only correspond to some embodiments of the present invention, and for those skilled in the art, some other drawings can be derived from these drawings without inventive labor, but these derived drawings should still belong to a part of the drawings of the embodiments of the present invention.
Fig. 1 is a schematic diagram illustrating an overall structure of a VOCs exhaust treatment system according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an overall structure of a VOCs waste gas treatment system having two adsorption devices according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of the overall structure of a VOCs waste gas treatment system according to a third embodiment of the present invention;
fig. 4 is a schematic diagram of the overall structure of another exhaust gas treatment system for VOCs according to the third embodiment of the present invention.
Reference numbers in the figures:
1-adsorption device, 11-gas inlet, 12-gas outlet, 13-adsorption chain row, 14-tray, 15-zeolite molecular sieve, 16-gas inlet valve and 17-gas outlet valve;
2-desorption device, 21-air inlet, 22-air outlet, 23-heater, and 24-desorption chain row;
3-combustion device, 31-combustor, 311-air inlet, 312-smoke outlet, 32-chimney;
4-induced draft fan, 41-induced draft opening and 42-air outlet;
5-blower, 51-tuyere;
6-transfer device, 61-shifting chain row, 62-driving mechanism;
7-drying device, 71-waste gas inlet, 72-waste gas outlet;
8-filtration unit, 81-filtration inlet, 82-filtration outlet, 83-pipeline valve;
9-a measurement and control device, 91-a gas concentration detector, 92-a gas temperature detector, 93-a fan operation controller, 94-a temperature controller and 95-a central controller.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, hereinafter, the drawings of the embodiments of the present invention will be combined to perform a clear and complete description on the technical solution of the embodiments of the present invention, and obviously, the embodiments described below are only part of the present invention, not all embodiments.
All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the described embodiments of the present invention, shall fall within the scope of the present invention.
It should be understood that in the description of the present invention, the terms "upper", "lower", "top", "bottom", "upper", "lower", and other indicative orientations or positions are only used for describing the orientation or position relationship shown in the drawings according to the embodiments of the present invention, and are not used for indicating or implying any particular orientation, particular orientation configuration, or operation that the device or component must have, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected or movably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The technical solution of the present invention will be described in detail with reference to specific examples. It should also be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
Example one
Fig. 1 shows an overall schematic structure diagram of a VOCs exhaust treatment system according to an embodiment of the present invention:
a VOCs exhaust treatment system comprising: the device comprises an adsorption device 1, a desorption device 2, a combustion device 3, an induced draft fan 4, a blower 5 and a transfer device 6;
the adsorption device 1 is provided with an air inlet 11, an air outlet 12, an adsorption chain row 13 and a tray 14, wherein the air inlet 11 is arranged at the upper part of the adsorption device 1 and used for receiving VOCs waste gas, the air outlet 12 is arranged at the lower part of the adsorption device 1, the adsorption chain row 13 is arranged inside the adsorption device 1, the tray 14 is placed on the adsorption chain row 13, and the bottom of the tray 14 is of a net structure and used for stacking zeolite molecular sieves 15;
the desorption device 2 is provided with an air inlet 21, an air outlet 22, a heater 23 and a desorption chain row 24, the air inlet 21 is arranged at the lower part of the desorption device 2, the air outlet 22 is arranged at the upper part of the desorption device 2, the heater 23 is arranged inside the desorption device 2, and the desorption chain row 24 is arranged in the desorption device 2 and is positioned above the heater 23;
the combustion device 3 comprises a combustor 31 and a chimney 32, the combustor 31 is provided with an air inlet 311 and an air outlet 312, the air inlet 311 is communicated with the air outlet 22, and the air outlet 312 is communicated with the chimney 32;
the induced draft fan 4 is provided with an induced draft port 41 and an air outlet 42, the induced draft port 41 is communicated with the air outlet 12, and the air outlet 42 is used for discharging the treated VOCs waste gas;
the blower 5 is provided with a blast port 51, and the blast port 51 is communicated with the air inlet 21;
the transfer device 6 comprises a transfer chain row 61 and a driving mechanism 62, two ends of the transfer chain row 61 are respectively linked with the adsorption chain row 13 and the desorption chain row 24, and the driving mechanism 62 drives the transfer chain row 61 to rotate and drives the adsorption chain row 13 and the desorption chain row 24 to rotate together through the transfer chain row 61.
The specific adsorption process of the above example was carried out as follows:
VOCs waste gas is sucked by the draught fan 4 and enters the adsorption device 1 from the air inlet 11, VOCs gas in the VOCs waste gas is adsorbed and enriched by the zeolite molecular sieve 15 when passing through the zeolite molecular sieve 15 stacked in the tray 14 on the adsorption chain row 13, and the VOCs waste gas treated by the zeolite molecular sieve 15 is sucked from the air inlet 41 of the draught fan 4 from the air outlet 22 and then is discharged from the air outlet 42 of the draught fan.
The desorption and regeneration process of the zeolite molecular sieve is carried out as follows:
firstly, the driving mechanism 62 of the transfer device 6 is started to drive the transfer chain row 61 to rotate, and the adsorption chain row 13 and the desorption chain row 24 which are linked with the transfer chain row 61 rotate together under the driving of the transfer chain row 61;
with the rotation of the adsorption chain row 13, the tray 14 which is placed on the adsorption chain row 13 and is stacked with the zeolite molecular sieve 15 is gradually moved out of the adsorption device 1 along with the rotation of the adsorption chain row 13, and enters the desorption chain row 24 in the desorption device 2 through the transshipment and transfer of the transfer chain row 61;
at this time, the blower 5 and the heater 23 are started, the outside air which is sent into the desorption device 2 through the air inlet 21 through the blast orifice 51 is heated by the heater 23 to become high-temperature gas, and the high-temperature gas is used for purging and desorbing the zeolite molecular sieve 15 adsorbed with the VOCs molecules, so that the desorption and the regeneration of the adsorption capacity of the zeolite molecular sieve 15 can be completed;
the gas carrying the desorbed VOCs molecules enters the burner 31 through the inlet 311, and after the VOCs molecules are burnt into carbon dioxide and water vapor and harmful substances are eliminated, the gas is discharged out of the VOCs waste gas treatment system of the embodiment through the chimney 32, namely, the treatment of the whole VOCs waste gas is completed.
Because the desorption device 2 can be made of high-temperature-resistant materials and can adopt technologies such as mechanical sealing to replace sealing strips without high-temperature resistance, the desorption device 2 can resist high temperature, and correspondingly, the temperature of air for sweeping and regenerating the zeolite molecular sieve 15 can also be high.
This kind of take out zeolite molecular sieve 15 from adsorption equipment 1's body, carry out the technique of regeneration in more suitable environment, can make zeolite molecular sieve 15 sweep the desorption under higher temperature, so, both can guarantee under the prerequisite of equipment and personal safety, let zeolite molecular sieve 15 can obtain comparatively thorough desorption, obtain satisfactory regeneration effect, thereby prolong its life, also can reduce the working costs of system's operation, improve economic benefits, can also promote zeolite molecular sieve 15 desorption, the maneuverability and the security of regeneration greatly.
The regenerated zeolite molecular sieve is driven by the driving mechanism 62 to move out of the desorption device 2 through the desorption chain row 24, and is driven by the adsorption chain row 13 to return to the adsorption device 1 again through the transfer of the transfer chain row 61, so that a new round of VOCs waste gas treatment work is started.
In the whole process of treating the VOCs waste gas and desorbing and regenerating the adsorbent zeolite molecular sieve 15, the zeolite molecular sieve 15 stacked on the tray 14 does not need to be interfered, so the operation is simple and convenient, and the labor intensity is low.
In the above embodiment, the zeolite molecular sieve 15 is a commercially available prefabricated product, has the characteristics of strong activity and large adsorption capacity, is convenient to fill, is low in price, and can be recycled for multiple times.
It can be seen that the VOCs waste gas treatment system provided by the embodiment has the advantages of novel design, reasonable layout, convenient manufacture and low operation cost, and therefore, has great popularization and application values.
Example two
As an improvement of above-mentioned embodiment one, the utility model provides a VOCs exhaust-gas treatment system, adsorption equipment 1's quantity is two at least, and each adsorption equipment arranges, all is equipped with the transfer device between each adsorption equipment and desorption equipment around desorption equipment.
The following, through fig. 2 a have two adsorption equipment the utility model discloses the overall structure schematic diagram of the VOCs exhaust-gas treatment system that the embodiment described is shown, describe the technical scheme of this embodiment that has two adsorption equipment 1, obviously, when the quantity of adsorption equipment 1 is more than two, its fundamental theory of operation and effect is basically the same when being two with the quantity of adsorption equipment 1, consequently, no longer describe repeatedly.
As shown in fig. 2, on the basis of the first embodiment, two adsorption devices 1 are arranged around the desorption device 2, and each adsorption device 1 is further provided with an air inlet valve 16 and an air outlet valve 17, the air inlet valve 16 is installed on the air inlet 1, and the air outlet valve 17 is installed below the air outlet 12 and is communicated with the air induction port 41;
the two adsorption devices 1 are arranged around the desorption device 2, and the transfer devices 6 are arranged between the two adsorption devices 1 and the desorption device 2, so that the two ends of the transfer chain row 61 of the two transfer devices 6 can be respectively linked with the adsorption chain row 13 of each adsorption device 1 and the desorption chain row 24 of the desorption device 2; under the drive of the two drive mechanisms 62, the two transfer chain rows 61 rotate respectively, and the adsorption chain row 13 and the desorption chain row 24 on one side are driven to rotate together by the transfer chain rows 61.
It can be seen that in this embodiment, on the basis of the first embodiment, by adding at least one adsorption device 1, while one adsorption device 1 treats VOCs waste gas, the adsorbent zeolite molecular sieve 15 in another adsorption device 1 is desorbed and regenerated; after the desorption and regeneration of the zeolite molecular sieve 15 are finished, returning to the original adsorption device 1 through the desorption chain row 24, the transfer chain row 6 and the adsorption chain row 13, and introducing the VOCs waste gas into the adsorption device 1 after the zeolite molecular sieve 15 in the adsorption device 1 for treating the VOCs waste gas is regenerated by switching the air inlet valve 16 and the air outlet valve 17 on different adsorption devices 1 after the adsorption of the zeolite molecular sieve 15 is saturated; the zeolite molecular sieve 15 in the adsorption device 1, which is saturated with the zeolite molecular sieve 15, can be sent to the desorption device 2 again through the driving mechanism 62 for desorption and regeneration.
Therefore, the VOCs waste gas treatment system described in the embodiment can be a continuous VOCs waste gas treatment system through the alternate adsorption, desorption and regeneration of the zeolite molecular sieves 15 in the two adsorption devices 1, so that the adsorption efficiency is further improved, and the operation cost is reduced.
EXAMPLE III
This embodiment is a further improvement of the described VOCs exhaust treatment system based on the first and second embodiments.
Fig. 3 is a schematic diagram of the overall structure of a VOCs exhaust treatment system further including a drying device and a filtering device based on fig. 1.
Fig. 4 is a schematic diagram of the overall structure of another VOCs exhaust treatment system based on fig. 2, further including a drying device and a filtering device.
As shown in fig. 3 and 4, the drying device 7 is provided with an exhaust gas inlet 71 and an exhaust gas outlet 72, the filtering device 8 is provided with a filtering inlet 81 and a filtering outlet 82, the filtering inlet 81 is used for receiving the exhaust gas of VOCs, and the filtering outlet 82 is communicated with the exhaust gas inlet 71.
In addition, as shown in fig. 3: the exhaust gas outlet 72 communicates with the intake port 11; as shown in fig. 4: the exhaust outlet 72 communicates with the intake valve 16.
Since moisture is harmful to the adsorbent, the adsorption capacity of the zeolite molecular sieve 15 to VOCs molecules can be greatly reduced, and for this reason, in this embodiment, a drying device 7 is added before the adsorption device 1 of the VOCs waste gas treatment system.
After having increased drying device 7, got into the utility model discloses a VOCs exhaust-gas treatment system's of description VOCs waste gas will at first dewater through drying device 7 to can effectively avoid steam to the influence of 15 adsorption efficiency of zeolite molecular sieve, thereby further improve zeolite molecular sieve 15's adsorption efficiency and prolong its life.
By adding the filtering device 8, solid impurities in the VOCs waste gas can be removed, and thus, the adsorbent zeolite molecular sieve 15 in the drying device 7 and the adsorption device 1 can be protected better and more effectively.
As a feasible technical solution, the drying device 7 may adopt an adsorption dryer filled with a drying agent, and the drying agent may be a mixture of one or more of molecular sieve, silica gel, activated carbon, and anhydrous calcium chloride.
Also, as a possible technical solution, the filtering device 8 may include: box, primary filter, well effect filter and high efficiency filter, the both sides of box set up and filter import 81 and filter export 82, and primary filter sets up the one side of filtering import 81 in the box, and high efficiency filter sets up filtration export 82 one side in the box, and well effect filter sets up in the box between primary filter and high efficiency filter.
The primary filter can be formed by overlapping stainless steel wire meshes, the intermediate filter can be formed by overlapping filter bags, and the high-efficiency filter can be formed by overlapping filter paper.
A line valve 83 may also be installed at the filter inlet 81 to protect the safety of the filter apparatus 8 and the VOCs exhaust treatment system and maintenance personnel by closing the line valve 83 when the VOCs exhaust is not being treated or the VOCs exhaust treatment system is being serviced.
Example four
As a further improvement, on the basis of the exhaust gas treatment systems for VOCs described in the first to third embodiments, the exhaust gas treatment system further includes: and a measurement and control device 9.
As shown in fig. 1 to 4, the measurement and control device 9 includes: a gas concentration detector 91, a gas temperature detector 92, a fan operation controller 93, a temperature controller 94, and a central controller 95.
Wherein:
as shown in fig. 1, the gas concentration detector 91 is installed on the gas inlet 11 of the adsorption apparatus 1 and the exhaust port 42 of the induced draft fan 4;
as shown in fig. 2, the gas concentration detector 91 is installed on the air intake valve 16 of the adsorption apparatus 1 and the air outlet 42 of the induced draft fan 4;
as shown in fig. 3 and 4, the gas concentration detector 91 is installed at the filter inlet 81 of the filter device 8 and the exhaust port 42 of the induced draft fan 4.
As shown in fig. 1 to 4:
the gas temperature detector 92 is arranged between the heater 23 and the desorption chain row 24 and is used for detecting the temperature of the desorption hot air;
the fan operation controller 93 is installed on the induced draft fan 4 and the blower 5, and is used for controlling the opening and closing of the adsorption fan 3 and the desorption fan 4 and the output power;
a temperature controller 94 installed on the heater 23 for controlling the on/off and output of the heater 23;
the central controller 95 is electrically connected or signal-connected to the gas concentration detector 91, the gas temperature detector 92, the fan operation controller 93, and the temperature controller 94, respectively, and is configured to receive the gas concentration and the gas temperature information measured by the gas concentration detector 91 and the gas temperature detector 92, and then provide control information to the fan operation controller 933 and the temperature controller 94 according to a preset program.
In one possible solution: the gas concentration detector adopts a VOCs gas concentration detector, the gas temperature detector adopts a thermal resistor/thermocouple temperature detector, the fan operation controller adopts a programmable stepping motor controller, the temperature controller adopts a silicon-controlled electric heating controller, and the central controller adopts a programmable logic controller.
It should be noted that: the VOCs gas concentration detector, the thermal resistor/thermocouple temperature detector, the silicon controlled electric heating controller and the programmable logic controller are all commercially available products.
Through setting up measurement and control device 9, can realize the embodiment of the utility model provides a VOCs exhaust-gas treatment system's of description automatic operation to improve VOCs's adsorption efficiency and the security of system better, reduce the running cost of system, alleviate control personnel's intensity of labour.
Finally, it can be seen that:
firstly, the embodiment of the utility model provides a VOCs waste gas treatment system, through the specific combination of adsorption equipment, desorption device, burner, draught fan, air-blower and transfer device, can adsorb, enrich and burn the purification with carrying out VOCs molecule in the VOCs waste gas effectively, reduce the VOCs content in the VOCs waste gas, protect environment and life health;
more distinctive is, the embodiment of the utility model provides a VOCs exhaust-gas treatment system can take out adsorbent zeolite molecular sieve from adsorption equipment's body, carries out high temperature desorption regeneration in more suitable environment, can guarantee under the prerequisite of equipment and personal safety for zeolite molecular sieve can obtain comparatively thorough desorption, obtains satisfying regeneration effect, thereby prolongs its life, reduces the running cost of system, improves economic benefits;
additionally, the embodiment of the utility model provides a VOCs exhaust-gas treatment system, modern design, compact structure, rationally distributed, make convenient, safe in operation, and can be according to actual need, adjustment and the setting and the operation of expansion system satisfy the needs of different operating modes, consequently, have popularization and application and worth.
During the description of the above description:
the description of the terms "present embodiment," "an embodiment of the present invention," "one possible implementation," "as shown at … …," "further improved implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or the example is included in at least one embodiment or example of the present invention; in this specification, the schematic representations of the terms used above are not necessarily for the same embodiment or example, and the particular features, structures, materials, or characteristics described, etc., may be combined or brought together in any suitable manner in any one or more embodiments or examples; furthermore, those of ordinary skill in the art may combine or combine features of different embodiments or examples and features of different embodiments or examples described in this specification without undue conflict.
Finally, it should be noted that:
the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A VOCs exhaust treatment system, comprising: the device comprises an adsorption device, a desorption device, a combustion device, a draught fan, a blower and a transfer device;
the adsorption device is provided with an air inlet, an air outlet, an adsorption chain row and a tray, wherein the air inlet is arranged at the upper part of the adsorption device and used for receiving the VOCs waste gas, the air outlet is arranged at the lower part of the adsorption device, the adsorption chain row is arranged inside the adsorption device, the tray is placed on the adsorption chain row, and the bottom of the tray is of a net structure and used for stacking zeolite molecular sieves;
the desorption device is provided with an air inlet, an air outlet, a heater and a desorption chain row, the air inlet is arranged at the lower part of the desorption device, the air outlet is arranged at the upper part of the desorption device, the heater is arranged in the desorption device, and the desorption chain row is arranged in the desorption device and is positioned above the heater;
the combustion device comprises a combustor and a chimney, the combustor is provided with an air inlet channel and a discharge flue, the air inlet channel is communicated with the air outlet, and the discharge flue is communicated with the chimney;
the induced draft fan is provided with an induced draft opening and an air outlet, the induced draft opening is communicated with the air outlet, and the air outlet is used for discharging the treated VOCs waste gas;
the blower is provided with a blast port which is communicated with the air inlet;
the transfer device comprises a transfer chain row and a driving mechanism, two ends of the transfer chain row are respectively connected with the adsorption chain row and the desorption chain row, and the driving mechanism drives the transfer chain row to rotate and drives the adsorption chain row and the desorption chain row to rotate together through the transfer chain row.
2. A VOCs exhaust treatment system as recited in claim 1, wherein:
the number of the adsorption devices is at least two, each adsorption device is also provided with an air inlet valve and an air outlet valve, the air inlet valves are installed on the air inlets, and the air outlet valves are installed below the air outlets and communicated with the air induction ports;
the adsorption devices are arranged around the desorption devices, the transfer devices are arranged between the adsorption devices and the desorption devices, two ends of a shifting chain row of each transfer device are respectively connected with the adsorption chain row of each adsorption device and the desorption chain row of each desorption device, and under the driving of a driving mechanism of each transfer device, the shifting chain rows respectively rotate and respectively drive the adsorption chain row and the desorption chain row which are connected with the shifting chain row to rotate together.
3. A VOCs exhaust treatment system as recited in claim 2, further comprising: a drying device and a filtering device;
the drying device is provided with a waste gas inlet and a waste gas outlet, and the waste gas outlet is communicated with the air inlet or the air inlet valve;
the filter equipment is equipped with and filters import and filtration export, it is used for receiving VOCs waste gas to filter the import, filter the export with waste gas import intercommunication.
4. A VOCs exhaust treatment system as claimed in claim 3, wherein:
the drying device is an adsorption dryer, and a drying agent is filled in the adsorption dryer.
5. A VOCs exhaust treatment system as claimed in claim 3, wherein:
the filtering device includes: the device comprises a box body, a primary filter, a medium-efficiency filter and a high-efficiency filter;
the filter import with the filter export sets up respectively the both sides of box, primary filter sets up in the box filter import one side, high efficiency filter sets up in the box filter export one side, secondary filter sets up primary filter with between the high efficiency filter in the box.
6. A VOCs exhaust treatment system according to claim 5, wherein:
the primary filter is formed by superposing stainless steel wire meshes, the intermediate filter is made of filter bags, and the high-efficiency filter is formed by superposing filter paper.
7. The VOCs exhaust treatment system of claim 1 or 2, further comprising: a measurement and control device;
the measurement and control device comprises: the system comprises a gas concentration detector, a gas temperature detector, a fan operation controller, a temperature controller and a central controller;
the gas concentration detector is used for detecting the gas concentration of VOCs;
the gas temperature detector is arranged between the heater and the desorption chain row;
the fan operation controller is arranged on the induced draft fan and the blower;
the temperature controller is mounted on the heater;
the central controller is electrically connected or in signal connection with the gas concentration detector, the gas temperature detector, the fan operation controller and the temperature controller respectively.
8. A VOCs exhaust treatment system as claimed in claim 7, wherein:
the gas concentration detector is a VOCs gas concentration detector, the gas temperature detector is a thermal resistor/thermocouple temperature detector, the fan operation controller is a programmable stepping motor controller, the temperature controller is a silicon controlled electrical heating controller, and the central controller is a programmable logic controller.
9. A VOCs exhaust treatment system as recited in claim 3, further comprising: a measurement and control device;
the measurement and control device comprises: the system comprises a gas concentration detector, a gas temperature detector, a fan operation controller, a temperature controller and a central controller;
the gas concentration detector is used for detecting the gas concentration of VOCs;
the gas temperature detector is arranged between the heater and the desorption chain row;
the fan operation controller is respectively arranged on the induced draft fan and the blower;
the temperature controller is mounted on the heater;
the central controller is electrically connected or in signal connection with the gas concentration detector, the gas temperature detector, the fan operation controller and the temperature controller respectively.
10. A VOCs exhaust treatment system as claimed in claim 9, wherein:
the gas concentration detector is a VOCs gas concentration detector, the gas temperature detector is a thermal resistor/thermocouple temperature detector, the fan operation controller is a programmable stepping motor controller, the temperature controller is a silicon controlled electrical heating controller, and the central controller is a programmable logic controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921249365.2U CN210786743U (en) | 2019-08-02 | 2019-08-02 | VOCs exhaust-gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921249365.2U CN210786743U (en) | 2019-08-02 | 2019-08-02 | VOCs exhaust-gas treatment system |
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| CN210786743U true CN210786743U (en) | 2020-06-19 |
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| CN201921249365.2U Active CN210786743U (en) | 2019-08-02 | 2019-08-02 | VOCs exhaust-gas treatment system |
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