Active carbon device for efficiently treating high-emission VOCs (Volatile Organic Compounds)

Abstract

The utility model relates to the technical field of chemical equipment, in particular to an activated carbon device for efficiently treating high-emission VOCs (Volatile Organic Compounds), which comprises an activated carbon adsorber group, a drying fan, a condenser, a first filter, a second filter and a chimney, the activated carbon adsorber group comprises a first activated carbon adsorber, a second activated carbon adsorber and a third activated carbon adsorber; according to the utility model, the three activated carbon adsorbers are arranged to simultaneously carry out adsorption, desorption and drying and cooling processes, so that the adsorption time is equal to the desorption time and the drying and cooling time, and compared with the traditional activated carbon adsorption device, the treatment capacity is greatly improved and the investment is reduced for VOCs (Volatile Organic Compounds) with high emission concentration and large emission amount.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, in particular to an activated carbon device for efficiently treating high-emission VOCs. Background Art

[0002] As an excellent adsorption material, activated carbon has always occupied an important position in the field of adsorption treatment. It shows extremely excellent adsorption capacity for organic substances in sewage and VOCs in waste gas, and can effectively purify sewage and waste gas, playing a key role in the protection of the ecological environment.

[0003] In many industries, activated carbon has been widely used. However, the existing activated carbon adsorption devices have exposed some problems when treating high-emission VOCs. Currently, one device usually performs adsorption work, while the other simultaneously performs desorption and drying and cooling operations. Since the adsorption time is equal to the desorption plus drying and cooling time, this makes the regeneration cycle very long. Correspondingly, the adsorption cycle is also lengthened. When facing VOCs with high emission concentration and large emission volume, the processing capacity of the same specification equipment is significantly insufficient, greatly restricting the full use of activated carbon in this field.

[0004] Therefore, there is an urgent need for an activated carbon device for efficiently treating high-emission VOCs that can reduce the adsorption cycle and reduce the input cost. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an activated carbon device for efficiently treating high-emission VOCs that can improve the adsorption efficiency, reduce the adsorption time, and reduce the input cost.

[0006] The utility model solves its technical problems by adopting the following technical solutions:

[0007] An activated carbon device for efficiently treating high-emission VOCs includes: an activated carbon adsorber group, a drying fan, a condenser, a first filter, a second filter, and a chimney. The activated carbon adsorber group includes a first activated carbon adsorber, a second activated carbon adsorber, and a third activated carbon adsorber; the first inlet end at the bottom of the first activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter, the second inlet end at the bottom of the first activated carbon adsorber is connected to the outlet end of the drying fan, the outlet end at the bottom of the first activated carbon adsorber is connected to the inlet end of the condenser, and the outlet end at the top of the first activated carbon adsorber is connected to the inlet end of the chimney;

[0008] The first inlet end at the bottom of the second activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter. The second inlet end at the bottom of the second activated carbon adsorber is connected to the outlet end of the drying fan. The outlet end at the bottom of the second activated carbon adsorber is connected to the inlet end of the condenser. The outlet end at the top of the second activated carbon adsorber is connected to the inlet end of the chimney.

[0009] The first inlet end at the bottom of the third activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter. The second inlet end at the bottom of the third activated carbon adsorber is connected to the outlet end of the drying fan. The outlet end at the bottom of the third activated carbon adsorber is connected to the inlet end of the condenser. The outlet end at the top of the third activated carbon adsorber is connected to the inlet end of the chimney.

[0010] Moreover, it further includes several pipelines. A first pipeline is provided at the first inlet end at the bottom of the first activated carbon adsorber, a second pipeline is provided at the second inlet end at the bottom of the first activated carbon adsorber, a third pipeline is provided at the outlet end at the bottom of the first activated carbon adsorber, a fourth pipeline is provided at the outlet end at the top of the first activated carbon adsorber, a fifth pipeline is provided at the inlet end at the top of the first activated carbon adsorber, a sixth pipeline is provided at the first inlet end at the bottom of the second activated carbon adsorber, a seventh pipeline is provided at the second inlet end at the bottom of the second activated carbon adsorber, an eighth pipeline is provided at the outlet end at the bottom of the second activated carbon adsorber, a ninth pipeline is provided at the outlet end at the top of the second activated carbon adsorber, a tenth pipeline is provided at the inlet end at the top of the second activated carbon adsorber, an eleventh pipeline is provided at the first inlet end at the bottom of the third activated carbon adsorber, a twelfth pipeline is provided at the second inlet end at the bottom of the third activated carbon adsorber, a thirteenth pipeline is provided at the outlet end at the bottom of the third activated carbon adsorber, a fourteenth pipeline is provided at the outlet end at the top of the third activated carbon adsorber, a fifteenth pipeline is provided at the inlet end at the top of the third activated carbon adsorber, and a sixteenth pipeline is further provided at the inlet end of the condenser.

[0011] Moreover, valves are provided on several of the said pipelines.

[0012] Moreover, the outlet end of the first filter is connected to a pressure monitor.

[0013] Moreover, the activated carbon adsorber group includes at least three activated carbon adsorbers.

[0014] The advantages and positive effects of the present utility model are:

[0015] By providing three activated carbon adsorbers, the adsorption, desorption, and drying and cooling processes are carried out simultaneously, so that the adsorption time is equal to the desorption time and equal to the drying and cooling time. Compared with the traditional activated carbon adsorption device, the present utility model greatly improves the treatment capacity and reduces the investment for VOCs with high emission concentration and large emission volume.

[0016] Compared with the traditional activated carbon adsorption device, where one is for adsorption and the other is for desorption and drying and cooling, the present utility model can achieve fast adsorption and fast desorption of the activated carbon adsorption device by only adding one adsorber of the same specification, solving the problems of long regeneration cycle and insufficient treatment capacity of the activated carbon adsorption device, and improving the treatment capacity by more than double.

[0017] The present utility model is provided with two filters, and the pressure monitor monitors the pressure difference between the inlet end and the outlet end of the first filter to measure the filtering effect of the first filter. When the pressure difference of the first filter increases, the second filter is switched to filter the tail gas, thereby improving the adsorption efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

[0019] REFERENCE NUMERALS

[0020] 1 - First activated carbon adsorber, 2 - Second activated carbon adsorber, 3 - Third activated carbon adsorber, 4 - Drying fan, 5 - Condenser, 6 - 21 - Valves, 22 - First filter, 23 - Second filter, 24 - Pressure monitor, 25 - Chimney. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present utility model will be further described in detail below with reference to the drawings and through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present utility model cannot be limited thereby.

[0022] An activated carbon device for efficiently treating high - emission VOCs includes: an activated carbon adsorber group, a drying fan 4, a condenser 5, a first filter 22, a second filter 23, and a chimney 25. The activated carbon adsorber group includes a first activated carbon adsorber 1, a second activated carbon adsorber 2, and a third activated carbon adsorber 3. The first inlet end at the bottom of the first activated carbon adsorber 1 is respectively connected to the outlet ends of the first filter 22 and the second filter 23. The second inlet end at the bottom of the first activated carbon adsorber 1 is connected to the outlet end of the drying fan 4. The outlet end at the bottom of the first activated carbon adsorber 1 is connected to the inlet end of the condenser 5. The outlet end at the top of the first activated carbon adsorber 1 is connected to the inlet end of the chimney 25.

[0023] The first inlet end at the bottom of the second activated carbon adsorber 2 is respectively connected to the outlet ends of the first filter 22 and the second filter 23. The second inlet end at the bottom of the second activated carbon adsorber 2 is connected to the outlet end of the drying fan 4. The outlet end at the bottom of the second activated carbon adsorber 2 is connected to the inlet end of the condenser 5. The outlet end at the top of the second activated carbon adsorber 2 is connected to the inlet end of the chimney 25.

[0024] The first inlet end at the bottom of the third activated carbon adsorber 3 is respectively connected to the outlet ends of the first filter 22 and the second filter 23. The second inlet end at the bottom of the third activated carbon adsorber 3 is connected to the outlet end of the drying fan 4. The outlet end at the bottom of the third activated carbon adsorber 3 is connected to the inlet end of the condenser 5. The outlet end at the top of the third activated carbon adsorber 3 is connected to the inlet end of the chimney 25.

[0025] The activated carbon adsorber group includes at least three activated carbon adsorbers.

[0026] In the embodiment of the present utility model, a first pipeline is provided at the first inlet end at the bottom of the first activated carbon adsorber 1, and a valve 7 is provided on the first pipeline. The first inlet end at the bottom of the first activated carbon adsorber 1 is connected to the outlet ends of the first filter 22 and the second filter 23 through the first pipeline. The first filter 22 and the second filter 23 are respectively used to filter impurities in the tail gas. A second pipeline is provided at the second inlet end at the bottom of the first activated carbon adsorber 1, and a valve 6 is provided on the second pipeline. The second inlet end at the bottom of the first activated carbon adsorber 1 is connected to the outlet end of the drying fan 4 through the second pipeline. The drying fan 4 is used to convey air. A third pipeline is provided at the outlet end at the bottom of the first activated carbon adsorber 1, and a valve 8 is provided on the third pipeline. The outlet end at the bottom of the first activated carbon adsorber 1 is connected to the inlet end of the condenser 5 through the third pipeline. The condenser 5 recovers the solvent to a specified position from the outlet end. A fourth pipeline is provided at the outlet end at the top of the first activated carbon adsorber 1, and a valve 16 is provided on the fourth pipeline. The outlet end at the top of the first activated carbon adsorber 1 is connected to the inlet end of the chimney 25 through the fourth pipeline. The outlet of the chimney 25 is used to discharge the purified gas. A fifth pipeline is provided at the inlet end at the top of the first activated carbon adsorber 1, and a valve 15 is provided on the fifth pipeline. The inlet end at the top of the first activated carbon adsorber 1 conveys steam through the fifth pipeline.

[0027] The first inlet end at the bottom of the second activated carbon adsorber 2 is provided with a sixth pipeline, and a valve 10 is arranged on the sixth pipeline. The first inlet end at the bottom of the second activated carbon adsorber 2 is connected to the outlet ends of the first filter 22 and the second filter 23 through the sixth pipeline. The second inlet end at the bottom of the second activated carbon adsorber 2 is provided with a seventh pipeline, and a valve 9 is arranged on the seventh pipeline. The second inlet end at the bottom of the second activated carbon adsorber 2 is connected to the outlet end of the drying fan 4 through the seventh pipeline. The outlet end at the bottom of the second activated carbon adsorber 2 is provided with an eighth pipeline, and a valve 11 is arranged on the eighth pipeline. The outlet end at the bottom of the second activated carbon adsorber 2 is connected to the inlet end of the condenser 5 through the eighth pipeline. The outlet end at the top of the second activated carbon adsorber 2 is provided with a ninth pipeline, and a valve 18 is arranged on the ninth pipeline. The outlet end at the top of the second activated carbon adsorber 2 is connected to the inlet end of the chimney 25 through the ninth pipeline. The inlet end at the top of the second activated carbon adsorber 2 is provided with a tenth pipeline, and a valve 17 is arranged on the tenth pipeline. The inlet end at the top of the second activated carbon adsorber 2 conveys steam through the tenth pipeline.

[0028] The first inlet end at the bottom of the third activated carbon adsorber 3 is provided with an eleventh pipeline, and a valve 13 is arranged on the eleventh pipeline. The first inlet end at the bottom of the third activated carbon adsorber 3 is connected to the outlet ends of the first filter 22 and the second filter 23 through the eleventh pipeline. The second inlet end at the bottom of the third activated carbon adsorber 3 is provided with a twelfth pipeline, and a valve 12 is arranged on the twelfth pipeline. The second inlet end at the bottom of the third activated carbon adsorber 3 is connected to the outlet end of the drying fan 4 through the twelfth pipeline. The outlet end at the bottom of the third activated carbon adsorber 3 is provided with a thirteenth pipeline, and a valve 14 is arranged on the thirteenth pipeline. The outlet end at the bottom of the third activated carbon adsorber 3 is connected to the inlet end of the condenser 5 through the thirteenth pipeline. The outlet end at the top of the third activated carbon adsorber 3 is provided with a fourteenth pipeline, and a valve 20 is arranged on the fourteenth pipeline. The outlet end at the top of the third activated carbon adsorber 3 is connected to the inlet end of the chimney 25 through the fourteenth pipeline. The inlet end at the top of the third activated carbon adsorber 3 is provided with a fifteenth pipeline, and a valve 19 is arranged on the fifteenth pipeline. The inlet end at the top of the third activated carbon adsorber 3 conveys steam through the fifteenth pipeline.

[0029] A sixteenth pipeline is also arranged at the inlet end of the condenser 5, and a valve 21 is arranged on the sixteenth pipeline. By conveying steam into the sixteenth pipeline, the condenser 5 can be flushed to prevent the cooling efficiency from decreasing due to the blockage of the condenser 5.

[0030] In the embodiment of the present utility model, the outlet end of the first filter 22 is connected to the pressure monitor 24, which is used to display the pressure difference between the inlet end and the outlet end of the first filter 22, so as to measure the filtering effect of the first filter 22. When the filter screen inside the first filter 22 is blocked by impurities, the pressure difference will increase. By monitoring the change of the pressure difference, it is further determined whether to activate the second filter 23.

[0031] Working principle:

[0032] In the embodiment of the present utility model, three activated carbon adsorbers are provided. The tail gas is adsorbed and discharged through the activated carbon adsorbers respectively. After adsorption saturation, steam regeneration is adopted, and then air is introduced by the drying fan 4 for drying and cooling.

[0033] First, the adsorption process is carried out. The first activated carbon adsorber 1 adsorbs first. The valve 7 and the valve 16 are opened, and other valves are closed. The tail gas is filtered by the filter and enters the first activated carbon adsorber 1 through the first pipeline for adsorption treatment. The purified gas is discharged into the atmosphere through the fourth pipeline and the chimney 25. When the first activated carbon adsorber 1 is saturated with adsorption, it stops working, the valve 7 and the valve 16 are closed, and the first activated carbon adsorber 1 is subjected to steam desorption; switch to the second activated carbon adsorber 2 for adsorption. The valve 10 and the valve 18 are opened, and the tail gas enters the second activated carbon adsorber 2 through the sixth pipeline for adsorption treatment. The purified gas is discharged into the atmosphere through the ninth pipeline and the chimney 25. When the second activated carbon adsorber 2 is saturated with adsorption, it stops working, the valve 10 and the valve 18 are closed, the second activated carbon adsorber 2 is subjected to steam desorption, and the first activated carbon adsorber 1 is dried and cooled; switch to the third activated carbon adsorber 3 for adsorption. When the third activated carbon adsorber 3 adsorbs, the valve 13 and the valve 20 are opened, and the tail gas enters the third activated carbon adsorber 3 through the eleventh pipeline for adsorption treatment. The purified gas is discharged into the atmosphere through the fourteenth pipeline and the chimney 25. When the third activated carbon adsorber 3 is saturated with adsorption, it stops working, the valve 13 and the valve 20 are closed, the third activated carbon adsorber 3 is subjected to steam desorption, the second activated carbon adsorber 2 is dried and cooled, and switch to the first activated carbon adsorber 1 for adsorption.

[0034] Next is the steam desorption process: When the first activated carbon adsorber 1 undergoes steam desorption, valves 8 and 15 are opened, and other valves are closed. Steam is transported through the fifth pipeline to the first activated carbon adsorber 1, heating the first activated carbon adsorber 1 to 100°C. Subsequently, the steam exits from the third pipeline and enters the condenser 5 for solvent recovery. The recovered solvent is sent to a designated location. After the steam desorption is completed, valves 8 and 15 are closed, and drying and cooling are carried out. Switch to the second activated carbon adsorber 2 for steam desorption. Valves 11 and 17 are opened, and other valves are closed. Steam is transported through the tenth pipeline to the second activated carbon adsorber 2, heating the second activated carbon adsorber 2 to 100°C. Subsequently, the steam exits from the eighth pipeline and enters the condenser 5 for solvent recovery. The recovered solvent is sent to a designated location. After the steam desorption is completed, valves 11 and 17 are closed, and the second activated carbon adsorber 2 undergoes drying and cooling. Switch to the third activated carbon adsorber 3 for steam desorption. Valves 15 and 13 are opened, and other valves are closed. Steam is transported through the fifteenth pipeline to the third activated carbon adsorber 3, heating the third activated carbon adsorber 3 to 100°C. Subsequently, the steam exits from the thirteenth pipeline and enters the condenser 5 for solvent recovery. The recovered solvent is sent to a designated location. After the steam desorption is completed, valves 15 and 13 are closed, and the third activated carbon adsorber 3 undergoes drying and cooling.

[0035] Finally is the drying and cooling process: When the first activated carbon adsorber 1 undergoes drying and cooling, valves 6 and 16 are opened. Air is transported by the drying fan 4 to the first activated carbon adsorber 1 to cool the first activated carbon adsorber 1. The hot air that comes out is discharged through the chimney 25 via the fourth pipeline until the first activated carbon adsorber 1 cools down to 40°C. When the drying and cooling of the first activated carbon adsorber 1 is completed, valves 6 and 16 are closed, and the first activated carbon adsorber 1 enters the adsorption process again. Switch to the second activated carbon adsorber 2 for drying and cooling. Valves 9 and 18 are opened. Air is transported by the drying fan 4 from the seventh pipeline to the second activated carbon adsorber 2 to cool the second activated carbon adsorber 2. The hot air that comes out is discharged through the chimney 25 via the ninth pipeline until the second activated carbon adsorber 2 cools down to 40°C. When the drying and cooling of the second activated carbon adsorber 2 is completed, valves 9 and 18 are closed, and the second activated carbon adsorber 2 enters the adsorption process again. Switch to the third activated carbon adsorber 3 for drying and cooling. Valves 12 and 20 are opened. Air is transported by the drying fan 4 from the twelfth pipeline to the third activated carbon adsorber 3 to cool the third activated carbon adsorber 3. The hot air that comes out is discharged through the chimney 25 via the fourteenth pipeline until the third activated carbon adsorber 3 cools down to 40°C. When the drying and cooling of the third activated carbon adsorber 3 is completed, valves 12 and 20 are closed, and the third activated carbon adsorber 3 enters the adsorption process again.

[0036] They work in sequence in a cycle. The three activated carbon adsorbers respectively perform adsorption, steam desorption, and drying and cooling, so that the adsorption time is equal to the desorption time and equal to the drying and cooling time, greatly improving the treatment capacity for VOCs.

[0037] Although embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art can understand that: various substitutions, changes, and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the content disclosed in the embodiments and drawings.

Claims

1. An activated carbon device for efficiently treating high-emission VOCs, characterized in that: It includes an activated carbon adsorber group, a drying fan, a condenser, a first filter, a second filter and a chimney. The activated carbon adsorber group includes a first activated carbon adsorber, a second activated carbon adsorber and a third activated carbon adsorber; the first inlet end at the bottom of the first activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter, the second inlet end at the bottom of the first activated carbon adsorber is connected to the outlet end of the drying fan, the outlet end at the bottom of the first activated carbon adsorber is connected to the inlet end of the condenser, and the outlet end at the top of the first activated carbon adsorber is connected to the inlet end of the chimney; the first inlet end at the bottom of the second activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter, the second inlet end at the bottom of the second activated carbon adsorber is connected to the outlet end of the drying fan, the outlet end at the bottom of the second activated carbon adsorber is connected to the inlet end of the condenser, and the outlet end at the top of the second activated carbon adsorber is connected to the inlet end of the chimney; the first inlet end at the bottom of the third activated carbon adsorber is respectively connected to the outlet ends of the first filter and the second filter, the second inlet end at the bottom of the third activated carbon adsorber is connected to the outlet end of the drying fan, the outlet end at the bottom of the third activated carbon adsorber is connected to the inlet end of the condenser, and the outlet end at the top of the third activated carbon adsorber is connected to the inlet end of the chimney.

2. The activated carbon device for efficiently treating high-emission VOCs according to claim 1, wherein: It further includes several pipelines. The first inlet end at the bottom of the first activated carbon adsorber is provided with a first pipeline, the second inlet end at the bottom of the first activated carbon adsorber is provided with a second pipeline, the outlet end at the bottom of the first activated carbon adsorber is provided with a third pipeline, the outlet end at the top of the first activated carbon adsorber is provided with a fourth pipeline, the inlet end at the top of the first activated carbon adsorber is provided with a fifth pipeline, the first inlet end at the bottom of the second activated carbon adsorber is provided with a sixth pipeline, the second inlet end at the bottom of the second activated carbon adsorber is provided with a seventh pipeline, the outlet end at the bottom of the second activated carbon adsorber is provided with an eighth pipeline, the outlet end at the top of the second activated carbon adsorber is provided with a ninth pipeline, the inlet end at the top of the second activated carbon adsorber is provided with a tenth pipeline, the first inlet end at the bottom of the third activated carbon adsorber is provided with an eleventh pipeline, the second inlet end at the bottom of the third activated carbon adsorber is provided with a twelfth pipeline, the outlet end at the bottom of the third activated carbon adsorber is provided with a thirteenth pipeline, the outlet end at the top of the third activated carbon adsorber is provided with a fourteenth pipeline, the inlet end at the top of the third activated carbon adsorber is provided with a fifteenth pipeline, and a sixteenth pipeline is further provided at the inlet end of the condenser.

3. The activated carbon device for efficiently treating high-emission VOCs according to claim 2, characterized in that: Valves are provided on several of the said pipelines.

4. The activated carbon device for efficiently treating high-emission VOCs according to claim 1, characterized in that: The outlet end of the first filter is connected to a pressure monitor.

5. The activated carbon device for efficiently treating high-emission VOCs according to claim 1, wherein: The activated carbon adsorber group includes at least three activated carbon adsorbers.

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