CN212091304U - Air-reducing and thickening system suitable for banburying waste gas in rubber process - Google Patents
Air-reducing and thickening system suitable for banburying waste gas in rubber process Download PDFInfo
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- CN212091304U CN212091304U CN202020265331.9U CN202020265331U CN212091304U CN 212091304 U CN212091304 U CN 212091304U CN 202020265331 U CN202020265331 U CN 202020265331U CN 212091304 U CN212091304 U CN 212091304U
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Abstract
The utility model provides a be fit for air reduction thickening system of banburying waste gas in rubber technology, include: a slaked lime injection device, a pulse bag type dust collector and a dry type three-stage filter; the zeolite rotating wheel adsorption device is connected with the pre-filtering device and is provided with an adsorption area, a cooling area and a desorption area, and the waste gas is subjected to adsorption concentration through a rotating wheel in the adsorption area and then is discharged into the atmosphere through an exhaust funnel by a discharge fan after reaching the standard; the regenerator fires burning furnace, and the inlet line of each regenerator passes through desorption fan and links to each other with the desorption district, and the pipeline that goes out links to each other with the aiutage, and the other end of clear pipeline that blows is connected on the inlet line between desorption fan and regenerator, and the combustion chamber passes through the heat exchanger and links to each other with the aiutage with the desorption district. The utility model discloses effectively guarantee absorbent material's adsorption performance, prolong absorbent material's life, improve the availability of a whole set of system.
Description
Technical Field
The utility model relates to a waste gas treatment in the rubber technology, concretely relates to air reduction thickening system who is fit for banburying waste gas in rubber technology.
Background
The production of the tire industry is roughly divided into a rubber mixing process and a tire production process, and mainly comprises the processes of rubber mixing, tire bead manufacturing, cord fabric compound rubber calendering, tire molding, tire vulcanization and the like. The production process is generally carried out under the condition of heating, wherein the heating range of the former procedures of rubber mixing, rolling, extrusion and the like is 40-160 ℃, and substances with low volatile points are released in the temperature range; the vulcanization heating range is 100-200 ℃, under the condition, a large amount of volatile matters in the rubber material are released, and smoke is formed. The tire industry processes produce exhaust gases that are primarily organic containing dust, sulfides, and Volatile Organic Compounds (VOCs) with malodors. The waste gas in the tyre industry has the characteristics of large air quantity, low concentration and tar and dust content, and the currently commonly used waste gas treatment process comprises the following steps: low temperature plasma treatment technology, photo-oxidation treatment technology, washing technology, ozone oxidation technology or a combination of several technologies.
However, with the stricter environmental policy, the existing treatment process can not meet the requirement of waste gas treatment, and the condition that the treatment efficiency is low (usually 30-50%) and the waste gas can not reach the standard is existed, especially the waste gas in the banburying workshop. The concentration of the waste gas source in the banburying workshop can reach 50-100 mg/m3When the treatment technology is adopted, the outlet far exceeds the emission standard requirement (non-methane total hydrocarbon is 10 mg/m)3) Is measured. Therefore, according to the mature and wide treatment technology applied at present and the emission standard, the banburying waste gas in the tire industry is suitable for being purified by adopting an incineration process. However, considering that the air quantity of the banburying waste gas is large, the concentration is low, the energy consumption is too high when the banburying waste gas is directly incinerated, and the production pressure of enterprises is increased, the banburying waste gas is recommended to be incinerated after being subjected to air reduction and concentration increase, so that the load of incineration equipment can be reduced, the equipment investment is saved, and the waste gas concentration can be increasedThe fuel consumption of the incineration system is reduced, and the energy consumption of the system operation is reduced. However, because the banburying waste gas contains a certain amount of tar, the common filtering and concentrating process is easy to cause the blockage of the adsorbing material, the operation cost of the system is increased, the operation of the equipment is influenced, and the service life is reduced.
In summary, the disadvantages of the prior art are summarized as follows:
1) the traditional plasma, photochemical and washing processes have the problems of low treatment efficiency and discharge failure after reaching standards;
2) the existing 'filtration + concentration + incineration' process has the problems that an adsorption material is easy to block and the system operation cost is high.
SUMMERY OF THE UTILITY MODEL
According to the actual working condition of an internal mixing workshop in the tire industry, internal mixing waste gas has the characteristics of large air quantity, low concentration and tar and dust contained in the waste gas. When the banburying waste gas is treated, the conventional plasma, photochemical and washing processes cannot meet the requirements of relevant emission standards, and an incineration process is required for purification treatment. According to tire trade mixing workshop operating condition, it is big to have incineration equipment specification, investment cost height, the high scheduling problem of running cost when handling this part of the big amount of wind, the VOCs pollutant of low concentration, to these problems, the utility model discloses develop one kind and carry out the air reduction densification to the VOCs in tire trade low concentration, the big amount of wind mixing waste gas, adopt the heat accumulation formula of burning method to carry out oxidative decomposition's process route to the high concentration of desorption, the little amount of wind VOCs waste gas after the densification, can reach reduce system's running cost, saving equipment area, reduce investment cost, improve the purpose of getting rid of efficiency. The specific scheme is as follows:
an air-reducing and thickening system for banburying waste gas suitable for rubber technology comprises:
the pre-filtering device is connected with the discharge end of the banburying waste gas, consists of a slaked lime injection device, a pulse bag type dust collector and a dry type three-stage filter which are sequentially connected in the air inlet direction and is used for removing tar and dust in the waste gas;
the zeolite rotating wheel adsorption device is connected with the pre-filtering device and is provided with an adsorption area, a cooling area and a desorption area, and the waste gas passes through the adsorption area, is adsorbed and concentrated by a rotating wheel and reaches the standard, and is discharged to the atmosphere by a discharge fan through an exhaust funnel;
one end of the emergency adsorption device is connected with the front-mounted filter device through an emergency discharge pipeline, and the other end of the emergency adsorption device is connected with the discharge fan;
the regenerative chamber combustion furnace is provided with a plurality of regenerative chambers, combustion chambers are arranged at the tops of the plurality of regenerative chambers, each regenerative chamber is provided with an air inlet pipeline, an air outlet pipeline and a blowing pipeline, the air inlet pipeline is connected with a desorption area through a desorption fan, the air outlet pipeline is connected with an exhaust funnel, the other end of the blowing pipeline is connected to the air inlet pipeline between the desorption fan and the regenerative chamber, the combustion chambers are provided with heat exchange pipelines, the heat exchange pipelines are provided with heat exchangers, the heat exchangers are connected with the exhaust funnel through the desorption area, and the cooling area is connected with the heat exchangers through pipelines.
Furthermore, the particulate matters in the exhaust gas treated by the pre-filtering device are less than 1mg/m3。
Furthermore, an emergency discharge valve is arranged on the emergency discharge pipeline.
Furthermore, a flame arrester is arranged on an air inlet pipeline between the desorption fan and the regenerator combustion furnace, and a fresh air valve is arranged on the air inlet pipeline between the desorption fan and the flame arrester.
Furthermore, an emergency temperature relief valve is arranged on a heat exchange pipeline between the combustion chamber and the heat exchanger.
Further, the combustion chamber is provided with a combustion fan.
Furthermore, a fresh air pipeline is configured in the cooling area and the desorption area, and the emergency discharge pipeline is connected with the fresh air pipeline.
Because the utility model adopts the above technical scheme, the advantage lies in:
1) the adsorption performance of the adsorption material is effectively ensured, the service life of the adsorption material is prolonged, and the availability of the whole system is improved;
2) the waste gas air volume is effectively reduced, the waste gas concentration is increased, and the operation cost of a waste gas treatment system is saved;
3) can ensure that the banburying waste gas is discharged after being processed and reaching the standard.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic diagram of a wind-reducing and thickening system suitable for banburying waste gas in a rubber process.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
The utility model provides a be fit for the banburying waste gas's among the rubber technology air reduction thickening system, as shown in figure 1, include:
the pre-filtering device 10 is connected with a discharge end of the banburying waste gas, and the pre-filtering device 10 consists of a slaked lime injection device 11, a pulse bag type dust collector 12 and a dry type three-stage filter 13 which are sequentially connected in the air inlet direction and is used for removing tar and dust in the waste gas;
the zeolite rotating wheel adsorption device 20 is connected with the pre-filtering device 10, the zeolite rotating wheel adsorption device 20 is provided with an adsorption area 21, a cooling area 22 and a desorption area 23, and the waste gas passes through the adsorption area 21, is adsorbed and concentrated through a rotating wheel and reaches the standard, and is discharged into the atmosphere through an exhaust funnel 30 by a discharge fan 60;
an emergency adsorption device 70, one end of the emergency adsorption device 70 is connected with the pre-filter device 10 through an emergency discharge pipeline 71, and the other end is connected with the discharge fan 60;
the regenerative chamber combustion furnace 40 is provided with a plurality of regenerative chambers 41, combustion chambers 42 are arranged at the tops of the plurality of regenerative chambers 41, each regenerative chamber is provided with an air inlet pipeline 44, an air outlet pipeline 45 and a blowing pipeline 46, the air inlet pipeline 44 is connected with the desorption area 23 through a desorption fan 47, the air outlet pipeline 45 is connected with the exhaust funnel 30, the other end of the blowing pipeline 46 is connected with the air inlet pipeline 44 between the desorption fan 47 and the regenerative chamber 41, the combustion chamber 42 is provided with a heat exchange pipeline 49, the heat exchange pipeline 49 is provided with a heat exchanger 50, the heat exchanger 50 is connected with the desorption area 23 and the exhaust funnel 30, and the cooling area 22 is connected with the heat exchanger 50 through a pipeline.
The utility model discloses a "lime hydrate removes tar device + G4F 7F 9 dry filtration + runner absorption" and subtracts wind thickening preliminary treatment to banburying waste gas. According to the above description, the banburying waste gas contains a certain amount of tar, which, if directly enters the dry filter without treatment, is liable to cause filter blockage and enter the rear end adsorption material to affect the performance and service life of the adsorption material. Therefore, the utility model increases the slaked lime tar removal device at the waste gas pretreatment stage, effectively removes the tar component in the waste gas, and improves the availability of the waste gas treatment system. Slaked lime removes tar device and contains pulse bag collector and slaked lime injection apparatus, carries out the tectorial membrane through spraying slaked lime on straining a section of thick bamboo, wraps up filterable tar, prevents that tar from directly attaching and causing the jam on straining a section of thick bamboo, then carries out the pulse again and sweeps the back dust granule that the parcel has tar and drops to the ash bucket in, and then effectively prolongs the life of adsorbing material, improves the availability of whole system.
In fig. 1, 3 combustion chambers are shown, and each combustion chamber is provided with an inlet valve, an outlet valve and a purge valve at the connection with an inlet pipe 44, an outlet pipe 45 and a purge pipe 46.
In an alternative embodiment, the particulate matter in the exhaust gas after being treated by the pre-filter device 10 is less than 1mg/m3。
In an alternative embodiment, an emergency drain valve 72 is provided in the emergency drain line 71.
In an alternative embodiment, a flame arrestor 48 is provided in the air inlet line 44 between the desorption fan 47 and the regenerator furnace 40, and a fresh air valve 80 is provided in the air inlet line 44 between the desorption fan 47 and the flame arrestor 48.
In an alternative embodiment, an emergency desuperheating valve 51 is provided on the heat exchange line 49 between the combustion chamber and the heat exchanger 50.
In an alternative embodiment, the combustion chamber 42 is provided with a combustion fan 43.
In an alternative embodiment, the cooling zone 22 and the desorption zone 23 are provided with a fresh air line 80, and the emergency discharge line 71 is connected to the fresh air line 80.
The following is to the utility model provides a waste gas treatment system process flow carries out brief description:
1) the banburying waste gas firstly passes through a slaked lime tar removing device to remove tar and dust in the waste gas, and the tar is prevented from entering the rear end to block an adsorption material.
2) Then a dry filter (G4/F7/F9 primary-middle efficient filter) is arranged at the front end of the adsorption equipment to further remove a small amount of dust and tar in the waste gas, and the particulate matters in the waste gas entering a zeolite runner area are ensured to be less than 1mg/m3The zeolite rotating wheel is prevented from being blocked by particles, the poor adsorption effect of the zeolite rotating wheel is avoided, and the service life of the rotating wheel is prolonged.
3) Then, the waste gas after oil and dust removal is adsorbed and concentrated by the rotating wheel, the rotating wheel with saturated adsorption is desorbed by hot air, and the rotating wheel is cooled by inlet intake flow splitting small gas when reaching the cooling area 22 along with the rotation of the rotating wheel.
4) And the waste gas after desorption and concentration enters a heat accumulating type incinerator for oxidative decomposition.
5) The purified waste gas is discharged through a chimney after the heat of the waste gas is recovered by a heat accumulator.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (7)
1. An air-reducing and thickening system for banburying waste gas in rubber technology is characterized by comprising:
the pre-filtering device is connected with the discharge end of the banburying waste gas, consists of a slaked lime injection device, a pulse bag type dust collector and a dry type three-stage filter which are sequentially connected in the air inlet direction and is used for removing tar and dust in the waste gas;
the zeolite rotating wheel adsorption device is connected with the pre-filtering device and is provided with an adsorption area, a cooling area and a desorption area, and the waste gas passes through the adsorption area, is adsorbed and concentrated by a rotating wheel and reaches the standard, and is discharged to the atmosphere by a discharge fan through an exhaust funnel;
one end of the emergency adsorption device is connected with the front-mounted filter device through an emergency discharge pipeline, and the other end of the emergency adsorption device is connected with the discharge fan;
the regenerative chamber combustion furnace is provided with a plurality of regenerative chambers, combustion chambers are arranged at the tops of the plurality of regenerative chambers, each regenerative chamber is provided with an air inlet pipeline, an air outlet pipeline and a blowing pipeline, the air inlet pipeline is connected with a desorption area through a desorption fan, the air outlet pipeline is connected with an exhaust funnel, the other end of the blowing pipeline is connected to the air inlet pipeline between the desorption fan and the regenerative chamber, the combustion chambers are provided with heat exchange pipelines, the heat exchange pipelines are provided with heat exchangers, the heat exchangers are connected with the exhaust funnel through the desorption area, and the cooling area is connected with the heat exchangers through pipelines.
2. The system of claim 1, wherein the particulate matter in the waste gas after treatment by the pre-filter device is less than 1mg/m3。
3. The air-reducing and thickening system for the internal mixing waste gas in the rubber process as claimed in claim 1, wherein an emergency discharge valve is arranged on the emergency discharge pipeline.
4. The system of claim 1, wherein a flame arrester is disposed in the air inlet line between the desorption fan and the regenerator combustion furnace, and a fresh air valve is disposed in the air inlet line between the desorption fan and the flame arrester.
5. The air-reducing and thickening system for the internal mixing waste gas in the rubber process as claimed in claim 1, wherein an emergency temperature-relief valve is arranged on the heat exchange pipeline between the combustion chamber and the heat exchanger.
6. The air-reducing and air-enriching system for the banburying waste gas suitable for the rubber process as claimed in claim 1, wherein the combustion chamber is equipped with a combustion fan.
7. The air-reducing and enriching system for the internal mixing waste gas suitable for the rubber process as set forth in claim 1, wherein the cooling zone and the desorption zone are provided with fresh air pipes, and the emergency discharge pipe is connected to the fresh air pipes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020265331.9U CN212091304U (en) | 2020-03-06 | 2020-03-06 | Air-reducing and thickening system suitable for banburying waste gas in rubber process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020265331.9U CN212091304U (en) | 2020-03-06 | 2020-03-06 | Air-reducing and thickening system suitable for banburying waste gas in rubber process |
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| CN212091304U true CN212091304U (en) | 2020-12-08 |
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| CN202020265331.9U Active CN212091304U (en) | 2020-03-06 | 2020-03-06 | Air-reducing and thickening system suitable for banburying waste gas in rubber process |
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