CN216878411U

CN216878411U - Rubber banburying waste gas and flue gas treatment system

Info

Publication number: CN216878411U
Application number: CN202220238375.1U
Authority: CN
Inventors: 王凯; 郑庆华; 李伟刚; 蔡大顺; 何冰
Original assignee: Shanghai Lanbao Environmental Protection Technology Co ltd
Current assignee: Shanghai Lanbao Environmental Protection Technology Co ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-07-05
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a rubber banburying waste gas and flue gas treatment system, which comprises: the pulse bag type dust collector is connected with slaked lime supply equipment and is used for slaking lime and removing tar from the flue gas; the three-stage filter is connected with the output port of the pulse bag type dust collector, and the interior of the three-stage filter is respectively provided with an F6 filtering material, an activated carbon filtering material and an F9 filtering material from the inlet to the outlet and is used for filtering waste gas; a surface cooler is arranged in the third-stage filter so as to cool the waste gas; and the zeolite rotating wheel is connected with the outlet of the three-stage filter and is used for concentrating the filtered waste gas and discharging the concentrated waste gas through the exhaust funnel. The system can effectively remove dust, oil and moisture in the waste gas, ensures that particulate matters in the waste gas entering the zeolite rotating wheel area are less than 1mg/m3, and ensures that the zeolite rotating wheel is not blocked by the particulate matters. And the whole system is automatically controlled, is simple to operate and maintain, has low running cost, and is suitable for purifying banburying waste gas in the rubber industry.

Description

Rubber banburying waste gas and flue gas treatment system

Technical Field

The utility model relates to the field of environment-friendly equipment, in particular to a rubber banburying waste gas and flue gas treatment system.

Background

The rubber mixing amount is large for a rubber tire factory, and a mixer system is easy to produce a production line of VOCs waste gas. With the increasing awareness of environmental protection, most tire enterprises have developed the treatment of waste gas from rubber tire production lines on a large scale. The waste gas produced by the banburying line is characterized by containing dust components such as carbon black dust, rubber particles, rubber refining dust and the like, oil components such as engine oil, aromatic oil and the like, and organic and inorganic gases such as non-methane total hydrocarbon, benzene series, methanol, methyl sulfide, CS2, H2S, H2O, chloride and the like. At present, the treatment and purification of the waste gas are generally carried out by adopting a combined process. Typical processes include bag-type dust removal + low-temperature plasma process, bag-type dust removal + activated carbon adsorption and desorption + CO/RTO/boiler combustion process, bag-type dust removal + zeolite runner + RTO/boiler combustion process, high-efficiency oil remover + bag-type dust removal + adsorption process and the like. The existing treatment process has a not ideal treatment effect on waste gas generated by a production line of an internal mixer system of a rubber tire factory, mainly because oil mist, dust and the like in the waste gas are easily adhered to the surface of a filter bag of a bag type dust collector, the treatment efficiency of the dust collector is reduced, the resistance of equipment is increased, and part of the oil mist and particles which are not effectively intercepted are easily blocked by micropores of active carbon or a zeolite rotating wheel, so that the adsorption efficiency is greatly reduced; in addition, the high-frequency replacement of filter bags, activated carbon and the like causes higher system operation cost.

As shown in FIG. 2, a rubber mixing waste gas of a certain rubber tire company Limited adopts a combined process of an efficient oil remover, a bag type dust collector and a ring type absorber to purify the waste gas. The high-efficiency oil remover consists of a cyclone component, a defoaming component, a precision filter and the like. The gas to be treated enters the cyclone chamber from the gas inlet, the airflow is accelerated in the cyclone chamber, the drop-shaped oil stain and dust substances enter the collecting cavity along the cylinder wall under the action of centrifugal force and are discharged by the sewage discharge device, the gas flows out of the cyclone chamber, is decelerated by the baffle plate assembly and then flows through the defoaming assembly, the dirt with slightly small particle size is further removed, and finally, after fine filtration by the high-precision ceramic filter, the gas flows out and contains a small amount of dust-containing gas, and the pretreatment is finished after the dust is removed by the bag type dust remover. And the pretreated waste gas is discharged after being adsorbed by active carbon.

The activated carbon after the saturation of the adsorption is treated as dangerous waste, and the adsorber is replaced with new activated carbon, so that the system can continuously treat the waste gas. However, this approach has the following disadvantages: (1) the high-efficiency oil remover has complex equipment, higher investment cost and higher energy consumption; (2) the high-efficiency oil remover is not suitable for gases with strong corrosivity; (3) the high-efficiency oil eliminator with the same specification is specially customized according to different waste gas air quantities, so that the popularization and the use are not facilitated; (4) the active carbon in the adsorption equipment is frequently replaced, the operation cost is high, and the use and maintenance are not convenient; (5) the filter bag is easy to be blocked.

SUMMERY OF THE UTILITY MODEL

In view of the above defects in the prior art, the utility model provides a rubber mixing waste gas and flue gas treatment system, which treats rubber mixing waste gas and flue gas through a process of slaked lime pretreatment, runner and boiler incineration so as to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides a rubber banburying waste gas and flue gas treatment system, which comprises:

the pulse bag type dust collector is connected with slaked lime supply equipment and is used for slaking lime and removing tar from the flue gas;

the three-stage filter is connected with the output port of the pulse bag type dust collector, and the interior of the three-stage filter is respectively provided with an F6 filtering material, an activated carbon filtering material and an F9 filtering material from the inlet to the outlet and is used for filtering waste gas; a surface cooler is arranged in the third-stage filter so as to cool the waste gas;

and the zeolite rotating wheel is connected with an outlet of the third-stage filter and is used for concentrating the filtered waste gas and discharging the concentrated waste gas through an exhaust funnel.

The utility model is further improved in that: the desorption gas outlet of the zeolite rotating wheel is used for discharging desorption gas containing concentrated pollutants, and the desorption gas outlet is connected with a boiler and used for burning the desorption gas.

The utility model is further improved in that: the slaked lime supply equipment comprises a slaked lime storage bin and a Roots blower; the slaked lime storage bin is used for discharging slaked lime to an air outlet of the Roots blower, and the Roots blower is used for injecting gas communicated with the slaked lime into the pulse bag type dust collector from an air inlet of the pulse bag type dust collector so that the slaked lime can be mixed with waste gas.

The utility model is further improved in that: and an adsorption fan is arranged between the output port of the pulse bag type dust collector and the tertiary filter.

The utility model is further improved in that: the zeolite rotating wheel is a vertical rotating wheel, and the rotating speed of the rotating wheel is 1-6 revolutions per hour.

The device provided by the utility model has the following technical effects:

(1) the device is simple, intelligent automatic control is facilitated, and operation and management are simple and convenient;

(2) the investment and the operation cost are low, and the popularization and the large-scale use are facilitated;

(3) the dust removal, oil removal and moisture removal efficiency of the waste gas is high.

Drawings

FIG. 1 is a process flow diagram of a rubber banburying waste gas flue gas treatment system of the utility model;

FIG. 2 is a process flow diagram of a prior art flue gas treatment system.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

Some exemplary embodiments of the utility model have been described for illustrative purposes, and it is to be understood that the utility model may be practiced otherwise than as specifically described.

As shown in FIG. 1, an embodiment of the present invention comprises a rubber banburying waste gas flue gas treatment system, comprising: the pulse bag type dust collector 10 is connected with slaked lime supply equipment 11 and is used for slaking lime and removing tar from the flue gas; the three-stage filter 12 is connected with the output port of the pulse bag type dust collector 10, and the interior of the three-stage filter is respectively provided with an F6 filtering material, an activated carbon filtering material and an F9 filtering material from the inlet to the outlet and is used for filtering waste gas; a surface cooler is arranged in the third-stage filter 12 so as to cool the waste gas; and the zeolite rotating wheel 13 is connected with the outlet of the three-stage filter 12 and is used for concentrating the filtered waste gas and discharging the concentrated waste gas through an exhaust funnel.

In this embodiment, the desorption gas outlet of zeolite runner 13 is used for discharging the desorption gas that contains concentrated pollutant, and the desorption gas outlet is connected with the boiler for carry out the burning to the desorption gas. The zeolite rotating wheel 13 is a vertical rotating wheel, and the rotating speed of the rotating wheel is 1-6 revolutions per hour.

In this embodiment, the slaked lime supply apparatus 11 includes a slaked lime storage bin 14 and a roots blower 15; the slaked lime storage bin 14 is used for discharging slaked lime to an air outlet of the Roots blower 15, and the Roots blower 15 is used for injecting gas-communicated slaked lime into the pulse bag type dust collector 10 from an air inlet of the pulse bag type dust collector 10 so that the slaked lime is mixed with waste gas.

In this embodiment, an adsorption fan is disposed between the output port of the pulse bag filter 10 and the tertiary filter 12.

The process principle of the embodiment is as follows: the dust, water and tar are pretreated by adopting a process of slaked lime tar removal (pulse bag type dust collector) and a three-stage filter (F6, activated carbon and F9). The slaked lime tar removing process is that a certain amount of slaked lime (mostly powder) is sprayed on the surface of a filter bag in a pulse bag type dust collector, a coating filter cake is formed on the surface of the filter bag, the slaked lime and the tar are fully contacted and combined to remove the tar in waste gas, and meanwhile, the filter bag is utilized for secondary dust removal to reduce the dust concentration. The three-stage filtration (F6, activated carbon and F9) is used for continuously carrying out high-precision filtration on the waste gas, meanwhile, a surface cooler is additionally arranged for cooling the waste gas, and through the measures, the waste gas meets the air inlet requirements of a zeolite rotating wheel (cooling, dedusting, tar removing and relative humidity reducing), so that the adsorption efficiency of the zeolite is improved, and the service life of the zeolite is prolonged. Waste gas is concentrated through the runner, and up to standard emission carries out the desorption to the runner again, and the desorption gas gets into the boiler and burns the back up to standard emission.

In the application process, the filter bag and the tertiary filter of the pulse dust collector are replaced regularly, and slaked lime is added into the secondary dust collector regularly to ensure the normal and stable operation of the whole pretreatment system.

The use method of the rubber banburying waste gas and flue gas treatment system comprises the following steps:

(1) a pretreatment stage: the process of 'slaked lime tar removal (pulse bag type dust collector 10) + three-stage filter 12(F6, activated carbon, F9)' is adopted to pretreat dust, moisture and tar in the waste gas of the rubber tire production line. The slaked lime tar removing process is that slaked lime is sprayed on the surface of an inner filter bag of the pulse bag type dust collector 10, a coating filter cake is formed on the surface of the filter bag, the slaked lime is contacted and combined with tar to remove the tar in the filter bag, and meanwhile, the filter bag is utilized for secondary dust removal to reduce the dust concentration in waste gas. Three-stage filtration (F6, activated carbon, F9) carries out step-by-step high-precision filtration to waste gas, adds the surface cooler in addition and cools down to waste gas, through above various measures, makes waste gas satisfy the requirement of admitting air of zeolite runner 13 (cooling, dust removal, remove tar, reduce waste gas relative humidity), guarantees that zeolite runner 13 is not blockked up by the particulate matter to improve the adsorption efficiency of zeolite runner 13 and prolong the life of zeolite runner 13.

(2) Zeolite wheel concentration treatment stage: the zeolite rotating wheel 13 is adopted to concentrate the organic waste gas with large air quantity and low concentration into the waste gas with small air quantity and high concentration, thereby reducing the construction cost and the operation cost of the subsequent heat storage combustion device. The concentrated waste gas is combusted by a boiler device, and the treated waste gas is discharged up to the standard. The waste gas passes through the zeolite in the runner, the organic components are adsorbed, and clean tail gas is discharged into the atmosphere through a main fan (variable frequency) of the system. The adsorber is a vertical rotating wheel, the zeolite rotating wheel can provide a large amount of surface area of gas contacting zeolite, the rotating wheel continuously rotates at the speed of 1-6 revolutions per hour, and the rotating wheel of the project can reach the removal rate of VOCs above 90%. VOCs in the wheel are desorbed in a concentrated saturation region and a saturation region at about 200 ℃ by heat flow provided by a heat exchanger, the desorption is completed and then the desorption is performed, the desorption is completed and the desorption is rotated to a cooling region, partial waste gas is extracted to cool the rotating wheel to normal temperature, and then the desorption is performed to an adsorption region.

(3) And (3) a boiler incineration treatment stage: according to the requirement of the first party, VOCs waste gas concentrated by the treatment system is sent to a first party boiler for incineration treatment by means of the power of a conveying fan.

After the multi-stage treatment, the gas which is superior to the national emission standard is conveyed to the high altitude with the ground clearance more than or equal to 15 meters through the induced draft fan and is discharged into the atmosphere.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a rubber banburying waste gas flue gas processing system which characterized in that includes:

the pulse bag type dust collector (10) is connected with slaked lime supply equipment (11) and is used for slaking lime and removing tar from the flue gas;

the three-stage filter (12) is connected with the output port of the pulse bag type dust collector (10), and the interior of the three-stage filter is respectively provided with an F6 filtering material, an activated carbon filtering material and an F9 filtering material from the inlet to the outlet and is used for filtering waste gas; a surface cooler is arranged in the third-stage filter (12) so as to cool the waste gas;

and the zeolite rotating wheel (13) is connected with an outlet of the three-stage filter (12) and is used for concentrating the filtered waste gas and discharging the concentrated waste gas through an exhaust funnel.

2. The rubber banburying waste gas and flue gas treatment system as claimed in claim 1, wherein: the desorption gas outlet of the zeolite rotating wheel (13) is used for discharging desorption gas containing concentrated pollutants, and the desorption gas outlet is connected with a boiler and used for burning the desorption gas.

3. The rubber mixing waste gas and flue gas treatment system of claim 1, wherein: the slaked lime supply equipment (11) comprises a slaked lime storage bin (14) and a Roots blower (15); the slaked lime storage bin (14) is used for discharging slaked lime to an air outlet of the Roots blower (15), and the Roots blower (15) is used for spraying gas communication slaked lime into the pulse bag type dust collector (10) from an air inlet of the pulse bag type dust collector (10) so that the slaked lime and waste gas can be mixed.

4. The rubber banburying waste gas and flue gas treatment system as claimed in claim 1, wherein: an adsorption fan is arranged between the output port of the pulse bag type dust collector (10) and the tertiary filter (12).

5. The rubber banburying waste gas and flue gas treatment system as claimed in claim 1, wherein: the zeolite rotating wheel (13) is a vertical rotating wheel, and the rotating speed of the rotating wheel is 1-6 revolutions per hour.