CN217041961U - Waste gas treatment system suitable for multi-concentration multi-wind-volume-change working condition waste gas - Google Patents
Waste gas treatment system suitable for multi-concentration multi-wind-volume-change working condition waste gas Download PDFInfo
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- CN217041961U CN217041961U CN202220677352.0U CN202220677352U CN217041961U CN 217041961 U CN217041961 U CN 217041961U CN 202220677352 U CN202220677352 U CN 202220677352U CN 217041961 U CN217041961 U CN 217041961U
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Abstract
The utility model discloses a waste gas treatment system suitable for waste gas with multi-concentration and multi-wind-quantity-variable working conditions, wherein a variable proportion concentrated zeolite rotating wheel can adjust the concentration proportion setting; the outlet of the pretreatment unit is connected with the waste gas inlet and the rotating wheel cooling inlet; the waste gas outlet is connected to a chimney, the rotating wheel cooling outlet is connected to a cold air inlet of the heat exchanger, a cold air outlet of the heat exchanger is connected to a rotating wheel desorption inlet, a rotating wheel desorption outlet is connected to a heat accumulating type incinerator, an air outlet of the heat accumulating type incinerator is connected to the chimney, a hearth hot air opening of the heat accumulating type incinerator is connected to a hot air inlet of the heat exchanger, and a hot air outlet of the heat exchanger is connected to the chimney; the power of the variable-frequency induced draft fan and the variable-frequency desorption fan is matched with the concentration proportion of the variable-proportion concentrated zeolite rotating wheel. The utility model discloses a variable proportion segmentation concentration technique under the different amount of wind and concentration condition, changes concentrated proportion, and furthest's the follow-up burning furnace of burning of saving handles the amount of wind, improves concentration, reduces gas and electric quantity consumption.
Description
Technical Field
The utility model relates to a waste gas treatment technical field, concretely relates to waste gas treatment system suitable for many wind quantitative changes operating mode waste gas of many concentrations.
Background
The zeolite rotating wheel adsorption concentration and Regenerative Thermal Oxidizer (RTO) process is utilized to treat volatile organic waste gases (VOCs) with low concentration and large air volume, and the zeolite rotating wheel adsorption concentration and Regenerative Thermal Oxidizer (RTO) process is the most effective, reliable and popular means in the air pollution treatment industry in recent years due to the characteristics of high treatment efficiency, safety and low energy consumption.
For some special industries (such as segmented spraying in the shipbuilding industry), the difference of the generated VOCs waste gas air quantity and the waste gas concentration is large in different stages of production, and the working conditions of waste gas can reach dozens every day. The traditional zeolite rotating wheel adsorption concentration and heat accumulating type incineration (RTO) process is only suitable for the working conditions of stable air volume and stable concentration, and for the condition of the working conditions of multiple concentrations and multiple air volumes, in order to meet the requirement of environmental protection and emission reaching the standard, the traditional zeolite rotating wheel adsorption concentration and heat accumulating type incineration (RTO) process is generally maintained by the existing treatment method and does not change along with the change of VOCs waste gas air volume and waste gas concentration, so that on one hand, an RTO furnace can not maintain the temperature by self-heating under the condition of low concentration, and only a large amount of natural gas can be consumed to burn to maintain the temperature of a hearth; on the other hand, the induced draft fan, the desorption fan and the RTO fan which are arranged in the system basically operate at high frequency, and under the condition of small air volume, very high electric energy consumption is maintained, and meanwhile, high-configuration equipment operates under the low-efficiency working condition for a long time, so that the service life of the equipment is influenced.
Therefore, it is necessary to develop a new exhaust gas treatment system
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waste gas treatment system suitable for many wind quantitative change operating mode waste gases of many concentrations to solve the waste gas treatment system among the prior art and only be applicable to the steady, the concentration stable operating mode of amount of wind, can't change along with VOCs waste gas amount of wind and the change of waste gas concentration, lead to on the one hand the RTO stove self-heating under the low concentration situation can't maintain the temperature, can only consume a large amount of natural gas to burn and maintain the furnace temperature; on the other hand, an induced draft fan, a desorption fan and an RTO fan which are arranged in the system basically keep high-frequency operation, under the condition of small air quantity, very high electric energy consumption is kept, and meanwhile, high-configuration equipment runs under the low-efficiency working condition for a long time, so that the service life of the equipment is influenced.
In order to realize the purpose, the technical scheme of the utility model is that:
the waste gas treatment system is characterized by comprising a pretreatment unit, a variable-ratio concentrated zeolite rotating wheel, a heat exchanger, a heat accumulating type incinerator and a chimney, wherein an adsorption area, a desorption area and a cooling area are arranged in the variable-ratio concentrated zeolite rotating wheel, the adsorption area is provided with a waste gas inlet and a waste gas outlet, the cooling area is provided with a rotating wheel cooling inlet and a rotating wheel cooling outlet, the desorption area is provided with a rotating wheel desorption inlet and a rotating wheel desorption outlet, and the variable-ratio concentrated zeolite rotating wheel can adjust the concentration ratio to be matched with different working conditions;
the pretreatment unit is used for collecting and pretreating waste gas, and an outlet of the pretreatment unit is connected with the waste gas inlet and the rotating wheel cooling inlet; the waste gas outlet is connected to the chimney through a variable-frequency induced draft fan, the rotating wheel cooling outlet is connected to a cold air inlet of the heat exchanger, a cold air outlet of the heat exchanger is connected to a rotating wheel desorption inlet, the rotating wheel desorption outlet is connected to the heat accumulating type incinerator through a variable-frequency desorption fan and a variable-frequency RTO (regenerative thermal oxidizer) fan, an air outlet of the heat accumulating type incinerator is connected to the chimney, a hot air opening of a hearth of the heat accumulating type incinerator is connected to a hot air inlet of the heat exchanger, and a hot air outlet of the heat exchanger is connected to the chimney; and the power of the variable-frequency induced draft fan and the variable-frequency desorption fan is matched with the concentration proportion of the variable-proportion concentrated zeolite rotating wheel.
By adopting the scheme, the pretreated waste gas is divided into two paths, namely the waste gas inlet and the rotating wheel cooling inlet, and the waste gas respectively enters the adsorption area and the cooling area of the variable-ratio concentrated zeolite rotating wheel, the waste gas is subjected to adsorption treatment in the adsorption area through the rotating wheel and then is connected to a chimney through the waste gas outlet to be discharged through a variable-frequency draught fan, the waste gas entering the cooling area is used for cooling the rotating wheel, the adsorption capacity of the waste gas is improved, the waste gas is discharged through the cooling outlet and enters the heat exchanger, the waste gas in the heat exchanger reaches the desorption temperature after being subjected to heat exchange with the hot air in the hearth of the heat accumulating type incinerator, then the waste gas enters the desorption area through the rotating wheel desorption inlet to desorb the rotating wheel, the desorbed high-concentration waste gas enters the heat accumulating type incinerator to be incinerated, the hot air in the hearth enters the heat exchanger to be subjected to heat exchange and then is discharged through the chimney during incineration, and the incinerated gas is directly discharged through the chimney.
On the basis of the technical scheme, the utility model discloses can also do following improvement:
further, the variable ratio concentrated zeolite wheel is a cylinder wheel.
Through adopting above-mentioned scheme, the cylinder runner can provide the concentrated proportion of wider range variable ratio, is applicable to the many operating modes of many concentrations of complex many amount of wind.
Further, the pretreatment unit comprises a pretreatment box and a static pressure box which are connected in sequence, and an outlet of the static pressure box is connected with the waste gas inlet and the rotating wheel cooling inlet.
Further, the pretreatment unit comprises a plurality of pretreatment tanks arranged in parallel.
By adopting the scheme, the plurality of parallel pretreatment boxes are arranged, each pretreatment box corresponds to a workshop, and the independence of each workshop is ensured.
Furthermore, an air quantity sensor and a VOCs concentration sensor are arranged between the waste gas inlet and the pretreatment unit.
Through adopting above-mentioned scheme, can real-time supervision amount of wind and VOCs concentration through leading amount of wind sensor and VOCs concentration sensor to the control adjusts the concentrated proportion of the concentrated zeolite runner of variable proportion and the power of frequency conversion draught fan, frequency conversion desorption fan and frequency conversion RTO fan.
Furthermore, the variable-proportion concentrated zeolite rotating wheel is connected with a controller, and the air quantity sensor and the VOCs concentration sensor are electrically connected with the controller to automatically adjust the concentration proportion.
By adopting the scheme, the automatic adjustment of the concentration proportion is realized through the controller.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the variable proportion sectional concentration technology under different air quantities and VOCs concentrations to ensure that the zeolite runner is concentrated in high proportion under the original lower concentration, thereby reducing the air quantity of the concentrated gas entering the RTO furnace and increasing the concentration, ensuring that the waste gas enters the RTO furnace in higher concentration, realizing the self-heating maintenance of the temperature in the furnace, and greatly reducing the natural gas consumption;
2. the utility model adopts the variable proportion sectional concentration technology under different air volume and VOCs concentration, and ensures that the actual processing air volume of the system is equivalent to that of the production line, thereby avoiding the excessive consumption and waste of electric quantity caused by the overflow of the processing capacity of the equipment through the frequency conversion working mechanism of the high-power electric equipment fan in the system;
3. the utility model adopts the variable proportion sectional concentration technology under different air quantities and VOCs concentrations, ensures that equipment such as zeolite rotating wheels, fans and the like in the system can run under variable working conditions, better prolongs the service life of the equipment, and plays a role in protecting the equipment;
4. the utility model discloses a variable proportion segmentation concentration technique under different amount of wind and the VOCs concentration can set up the field operation post as required for the production line carries out the working mode switch of segmentation concentration processing according to the actual production workshop section.
5. The utility model adopts the variable proportion sectional concentration technology under different air volumes and VOCs concentrations, can be arranged in linkage with a workshop as required, and switches working modes according to workshop sections and signals; or the front end of the zeolite rotating wheel is provided with an air volume sensor and a VOCs concentration sensor, and the working mode is switched according to the change signals of the air volume and the VOCs concentration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic system structure diagram according to an embodiment of the present invention.
Shown in the figure:
1. concentrating zeolite rotating wheels in variable proportions; 101. an exhaust gas inlet; 102. an exhaust gas outlet; 103. a rotating wheel desorption inlet; 104. a rotating wheel desorption outlet; 105. a runner cooling inlet; 106. a runner cooling outlet;
2. a heat exchanger; 201. a cold air inlet; 202. a cold air outlet; 203. a hot air inlet; 204. a hot air outlet;
3. a heat accumulating type incinerator;
4. a chimney;
5. a variable-frequency induced draft fan;
6. a variable frequency desorption fan;
7. a frequency conversion RTO fan;
8. a pretreatment tank;
9. a static pressure box;
10. an air volume sensor;
11. VOCs concentration sensor.
Detailed Description
Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1, the exhaust gas treatment system suitable for exhaust gas with multiple concentrations and multiple air volume changing conditions provided in this embodiment includes a pretreatment unit, a variable-ratio concentrated zeolite rotating wheel 1, a heat exchanger 2, a regenerative incinerator 3, and a chimney 4.
The inside of the variable-ratio concentrated zeolite rotating wheel 1 is provided with an adsorption area, a desorption area and a cooling area, the adsorption area is provided with a waste gas inlet 101 and a waste gas outlet 102, the cooling area is provided with a rotating wheel cooling inlet 105 and a rotating wheel cooling outlet 106, and the desorption area is provided with a rotating wheel desorption inlet 103 and a rotating wheel desorption outlet 104.
The variable-ratio concentration zeolite rotating wheel 11 can adjust concentration ratio setting to match different working conditions.
The pre-treatment unit is used to collect and pre-treat the exhaust gas and the outlet of the pre-treatment unit is connected to the exhaust gas inlet 101 and the wheel cooling inlet 105.
Specifically, the pretreatment unit includes two pretreatment tanks 8 arranged in parallel and a static pressure tank 9 connected to the pretreatment tanks 8, and an outlet of the static pressure tank 9 is connected to an exhaust gas inlet 101 and a wheel cooling inlet 105.
The parallel pretreatment boxes 8 are arranged, each pretreatment box 8 corresponds to a workshop, and the independence of each workshop is guaranteed.
The waste gas outlet 102 is connected to the chimney 4 through a variable-frequency induced draft fan 5.
The rotating wheel cooling outlet 106 is connected to a cold air inlet 201 of the heat exchanger 2, a cold air outlet 202 of the heat exchanger 2 is connected to a rotating wheel desorption inlet 103, and a rotating wheel desorption outlet 104 is connected to the regenerative incinerator 3 through a variable frequency desorption fan 6 and a variable frequency RTO fan 7.
An air outlet of the regenerative incinerator 3 is connected to the chimney 4, a hot air outlet of a hearth of the regenerative incinerator 3 is connected to the hot air inlet 203 of the heat exchanger 2, and a hot air outlet 204 of the heat exchanger 2 is connected to the chimney 4.
The pretreated waste gas is divided into two paths, namely a waste gas inlet 101 and a rotating wheel cooling inlet 105, and the waste gas respectively enters an adsorption area and a cooling area of a variable-ratio concentrated zeolite rotating wheel 1, the waste gas is subjected to rotary wheel adsorption treatment in the adsorption area and then is connected to a chimney 4 through a waste gas outlet 102 under the action of a variable-frequency draught fan 5 to be discharged, the waste gas entering the cooling area is used for cooling the rotating wheel to improve the adsorption capacity of the waste gas, then the waste gas is discharged through a cooling outlet and enters a heat exchanger 2, the waste gas in the heat exchanger 2 reaches desorption temperature after heat exchange with hot air in a hearth of a heat accumulating type incinerator 3, then the waste gas enters a desorption area through a rotating wheel desorption inlet 103 to desorb the rotating wheel, the desorbed high-concentration waste gas enters the heat accumulating type incinerator 3 to be incinerated, the hot air in the hearth enters the heat exchanger 2 to exchange heat and then is discharged through the chimney 4 during incineration, and the incinerated gas is directly discharged through the chimney 4.
The power of the variable-frequency induced draft fan 5 and the variable-frequency desorption fan 6 is matched with the concentration proportion of the variable-proportion concentrated zeolite rotating wheel 1.
The variable ratio concentrated zeolite wheel 1 is a cylinder wheel. The drum-type rotating wheel can provide a variable proportion concentration ratio in a wider range and is suitable for multiple working conditions of complex, multiple concentrations and multiple air quantities.
An air volume sensor 10 and a VOCs concentration sensor 11 are arranged between the waste gas inlet 101 and the static pressure box 9, wherein the specific model of the air volume sensor 10 is VS110, and the specific model of the VOCs concentration sensor 11 is LY 990-VOC.
The air quantity and the concentration of VOCs can be monitored in real time through the preposed air quantity sensor 10 and the VOCs concentration sensor 11 so as to control and adjust the concentration proportion of the variable-proportion concentrated zeolite rotating wheel 1 and the power of the variable-frequency induced draft fan 5, the variable-frequency desorption fan 6 and the variable-frequency RTO fan 7.
The variable-ratio concentrated zeolite rotating wheel 1 is connected with a controller, the controller is a PLC (programmable logic controller), the air quantity sensor 10 and the VOCs concentration sensor 11 are electrically connected with the controller to automatically adjust the concentration ratio, and the concentration ratio is automatically adjusted through the controller.
Specifically, in this embodiment, a single workshop has 3 different working conditions of pre-spraying, paint spraying, curing and repairing, and the two workshops are combined to form 11 working condition combinations of 6 modes, which correspond to 11 different air volume and concentration combinations.
A manual operation column can be arranged, and the concentration proportion of the variable-proportion concentrated zeolite rotating wheel 1 is correspondingly adjusted under 11 working conditions through manual operation; automatic control can also be performed according to a program preset in the controller.
The embodiment adopts the variable proportion sectional concentration technology under different air volumes and VOCs concentrations to ensure that the zeolite rotating wheel is concentrated in high proportion under the original lower concentration, so that the air volume of the concentrated gas entering the RTO furnace is reduced, the concentration is increased, the higher concentration of the waste gas is ensured to enter the RTO, the self-heating maintenance of the temperature in the furnace can be realized, and the consumption of natural gas is greatly reduced;
the embodiment adopts the variable proportion sectional concentration technology under different air volume and VOCs concentration, and ensures that the actual processing air volume of the system is equivalent to that of a production line, so that the electric quantity excessive consumption waste caused by the overflow of the processing capacity of equipment is avoided through the variable frequency working mechanism of a high-power electric equipment fan in the system;
the embodiment adopts the variable proportion sectional concentration technology under different air volumes and VOCs concentrations, ensures that equipment such as zeolite rotating wheels, fans and the like in the system can run under variable working conditions, better prolongs the service life of the equipment, and plays a role in protecting the equipment;
the variable proportion segmentation concentration technology under different amount of wind and VOCs concentration is adopted to this embodiment, can set up the field operation post as required for the production line carries out the working mode switch of segmentation concentrated processing according to actual production workshop section.
The embodiment adopts the variable proportion sectional concentration technology under different air volumes and VOCs concentrations, can be interlocked with a workshop according to needs, and switches working modes according to workshop sections and changing signals; or the front end of the zeolite rotating wheel is provided with an air volume sensor 10 and a VOCs concentration sensor 11, and the working mode is switched according to the change signals of the air volume and the VOCs concentration.
In the description of the present invention, a number of specific details are described. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit 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 embodiments of the present invention, and they should be construed as being included in the scope of the claims and description of the present invention.
Claims (6)
1. The waste gas treatment system is characterized by comprising a pretreatment unit, a variable-ratio concentrated zeolite rotating wheel, a heat exchanger, a heat accumulating type incinerator and a chimney, wherein an adsorption area, a desorption area and a cooling area are arranged in the variable-ratio concentrated zeolite rotating wheel, the adsorption area is provided with a waste gas inlet and a waste gas outlet, the cooling area is provided with a rotating wheel cooling inlet and a rotating wheel cooling outlet, the desorption area is provided with a rotating wheel desorption inlet and a rotating wheel desorption outlet, and the variable-ratio concentrated zeolite rotating wheel can adjust the concentration ratio to match different working conditions;
the pretreatment unit is used for collecting and pretreating waste gas, and an outlet of the pretreatment unit is connected with the waste gas inlet and the rotating wheel cooling inlet; the waste gas outlet is connected to the chimney through a variable-frequency induced draft fan, the rotating wheel cooling outlet is connected to a cold air inlet of the heat exchanger, a cold air outlet of the heat exchanger is connected to a rotating wheel desorption inlet, the rotating wheel desorption outlet is connected to the heat accumulating type incinerator through a variable-frequency desorption fan and a variable-frequency RTO (regenerative thermal oxidizer) fan, an air outlet of the heat accumulating type incinerator is connected to the chimney, a hot air opening of a hearth of the heat accumulating type incinerator is connected to a hot air inlet of the heat exchanger, and a hot air outlet of the heat exchanger is connected to the chimney; and the power of the variable-frequency induced draft fan and the variable-frequency desorption fan is matched with the concentration proportion of the variable-proportion concentrated zeolite rotating wheel.
2. The exhaust treatment system of claim 1, wherein the variable-ratio concentrating zeolite wheel is a cartridge wheel.
3. The exhaust treatment system of claim 1, wherein the pretreatment unit comprises a pretreatment tank and a static pressure tank connected in series, and an outlet of the static pressure tank is connected to the exhaust inlet and the runner cooling inlet.
4. The exhaust treatment system of claim 3, wherein the pretreatment unit comprises a plurality of the pretreatment tanks arranged in parallel.
5. The exhaust treatment system of claim 1, wherein an air volume sensor and a VOCs concentration sensor are disposed between the exhaust inlet and the pretreatment unit.
6. The exhaust gas treatment system of claim 5, wherein the variable-ratio enrichment zeolite wheel is connected with a controller, and the air volume sensor and the VOCs concentration sensor are electrically connected with the controller to automatically adjust the enrichment ratio.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220677352.0U CN217041961U (en) | 2022-03-25 | 2022-03-25 | Waste gas treatment system suitable for multi-concentration multi-wind-volume-change working condition waste gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220677352.0U CN217041961U (en) | 2022-03-25 | 2022-03-25 | Waste gas treatment system suitable for multi-concentration multi-wind-volume-change working condition waste gas |
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| Publication Number | Publication Date |
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| CN217041961U true CN217041961U (en) | 2022-07-26 |
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| CN202220677352.0U Active CN217041961U (en) | 2022-03-25 | 2022-03-25 | Waste gas treatment system suitable for multi-concentration multi-wind-volume-change working condition waste gas |
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