Activated carbon regeneration acid gas washing, dedusting and cooling device

Abstract

The utility model belongs to the technical field of preparation of concentrated sulfuric acid from activated carbon regenerated acid gas, and discloses an activated carbon regenerated acid gas washing, dedusting and cooling device. Comprising a dynamic wave scrubber, a packed tower, a head tank and a dilute acid cooler, a top outlet of the dynamic wave scrubber is connected with the lower part of the packed tower through a pipeline; the bottom of the packed tower is sequentially connected with a packed tower circulating pump, a dilute acid cooler and a head tank; the bottom of the dynamic wave washer is sequentially connected with an elevated tank circulating pump and an elevated tank; a bottom outlet of the head tank is connected with the dynamic wave scrubber through a pipeline; the dynamic wave scrubber comprises a circulating tank, an overflow weir and a reverse spraying pipe; the bottom of the reverse spraying pipe is communicated with the upper part of the circulating tank; the outlet of the dilute acid cooler is connected with the dilute acid inlet of the packed tower through a pipeline. The temperature of the acid gas can be stably controlled below a required value all the time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of active carbon regeneration acid gas making concentrated sulfuric acid, and relates to an active carbon regeneration acid gas washing dust removal and cooling device. BACKGROUND

[0002] The active carbon flue gas desulfurization and denitrification device is applied more and more widely, in the process, active carbon adsorbs the pollutants SO2 in flue gas so that the flue gas is discharged up to the standard, and the saturated active carbon releases SO2 gas by high-temperature regeneration, and the SO2 gas is produced into concentrated sulfuric acid. The active carbon regeneration desorption acid gas has the characteristics of high water content and large water content fluctuation.

[0003] The first step of the acid gas purification device adopts the process of "dynamic wave scrubber + packed tower", and the process in the dynamic wave scrubber is "adiabatic pickling", that is, the acid gas is washed by dilute acid, and the water in the dilute acid evaporates to remove impurities while the acid gas is cooled. The equipment material is acid-resistant glass steel, and the acid-resistant glass steel equipment has poor temperature resistance, so the temperature control of the acid gas is very important. In addition, the acid gas itself has high water content, especially when the water content in the acid gas fluctuates, it is difficult to keep the temperature of the acid gas below the required value after "adiabatic pickling".

[0004] Therefore, the technical personnel in the art have been committed to developing a new active carbon regeneration acid gas washing and cooling device to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the defects in the background art, and provides an active carbon regeneration acid gas washing, dust removal and cooling device, which can keep the temperature of the acid gas below the required value.

[0006] The utility model solves the technical problems by adopting the following technical scheme: an active carbon regeneration acid gas washing, dust removal and cooling device, comprising a dynamic wave scrubber, a packed tower, an elevated tank and a dilute acid cooler, the top outlet of the dynamic wave scrubber is connected to the lower part of the packed tower through a pipeline, the bottom of the packed tower is sequentially connected to a packed tower circulating pump, the dilute acid cooler and the elevated tank, the bottom of the dynamic wave scrubber is sequentially connected to an elevated tank circulating pump and the elevated tank, the bottom outlet of the elevated tank is connected to the dynamic wave scrubber through a pipeline, the dynamic wave scrubber comprises a circulating tank, an overflow weir and a reverse jet pipe, the bottom of the reverse jet pipe is in communication with the upper part of the circulating tank, and the overflow weir is arranged at the top of the reverse jet pipe, and the outlet of the dilute acid cooler is also connected to the dilute acid inlet of the packed tower through a pipeline.

[0007] Further, a dynamic wave scrubber acid gas outlet thermometer is arranged on the pipeline connecting the top outlet of the dynamic wave scrubber and the bottom of the packed tower.

[0008] Further, a reverse jet pipe thermometer is arranged on the outer wall of the reverse jet pipe.

[0009] Further, the bottom outlet of the power wave scrubber is sequentially connected with the power wave circulating pump and the upper part of the reverse spray pipe.

[0010] Further, the top of the packing tower is provided with a packing tower acid gas outlet.

[0011] Further, the top outlet of the power wave scrubber is the power wave scrubber acid gas outlet.

[0012] Further, the packing tower dilute acid outlet at the bottom of the packing tower is sequentially connected with the packing tower circulating pump, the dilute acid cooler and the liquid inlet of the high-level tank.

[0013] Further, the bottom outlet of the high-level tank is connected with the overflow weir on the power wave scrubber through a dilute acid outlet pipeline, and an automatic temperature control valve A is arranged on the dilute acid outlet pipeline, which can control the dilute acid flow according to the temperature signal fed back by the reverse spray pipe thermometer.

[0014] Further, the bottom of the power wave scrubber is sequentially connected with the high-level tank circulating pump and the liquid inlet of the high-level tank.

[0015] Further, the high-level tank circulating pump is a variable frequency pump, which can control the pump operating frequency and thus control the dilute acid flow according to the temperature feedback signal of the power wave scrubber acid gas outlet thermometer.

[0016] Further, an automatic temperature control valve B is arranged on the dilute acid pipeline connected with the dilute acid cooler of the high-level tank, which can control the dilute acid flow according to the temperature signal fed back by the power wave scrubber acid gas outlet thermometer.

[0017] Further, the top of the reverse spray pipe is also connected with a raw material acid gas pipeline.

[0018] Further, the device is also provided with a PLC control system, and the power wave scrubber, the packing tower, the dilute acid cooler, the packing tower circulating pump, the overflow weir, the reverse spray pipe thermometer, the power wave scrubber acid gas outlet thermometer, the power wave circulating pump, the high-level tank circulating pump, the automatic temperature control valve A and the automatic temperature control valve B are connected with the PLC control system, and are not limited to a specific model, as long as they can realize their working functions.

[0019] The liquid inlet of the high-level tank includes two parts of liquid inlet from the power wave scrubber and the dilute acid cooler.

[0020] The activated carbon regeneration acid gas temperature is 400℃, the high-temperature acid gas first enters the reverse spray pipe of the power wave scrubber, is scrubbed by the dilute acid in the reverse spray pipe to remove dust and is cooled to 80℃, and then enters the packing tower. The acid gas enters from the lower part of the packing tower, the dilute acid enters from the top of the packing tower, and the acid gas and the dilute acid are in contact in the packing tower to further cool to 40℃.

[0021] The power wave circulating pump is used for conveying the pressurized dilute acid in the circulating groove of the power wave scrubber to the reverse spray pipe of the power wave scrubber.

[0022] The packing tower is connected with a packing tower circulating pump and a dilute acid cooler.

[0023] The high tank is used for providing the dilute acid for protecting the power wave scrubber.

[0024] The reverse spray pipe of the power wave scrubber is provided with a temperature measuring instrument, i.e.

[0025] Compared with the prior art, the power wave scrubber has the beneficial effects that:

[0026] The active carbon regeneration acid gas washing dust removal and cooling device is used for the concentrated sulfuric acid production device, and is used for washing, dust removal and temperature control of the active carbon regeneration desorption acid gas. BRIEF DESCRIPTION OF DRAWINGS

[0027] The utility model is further explained in connection with the drawings and examples:

[0028] Figure 1 It is a kind of active carbon regeneration acid gas washing dust removal and cooling device of the utility model.

[0029] 1. power wave scrubber, 1-1. overflow weir, 1-2. reverse spray pipe, 1-3. circulating groove, 1-4. reverse spray pipe thermometer, 1-5. power wave scrubber acid gas outlet, 1-6. power wave scrubber acid gas outlet thermometer, 2. power wave circulating pump, 3. high tank, 4. high tank circulating pump, 5. packing tower, 5-1. packing tower dilute acid inlet, 5-2. packing tower acid gas outlet, 5-3. packing tower dilute acid outlet, 6. packing tower circulating pump, 7. dilute acid cooler, 8. automatic temperature control valve A, 9. automatic temperature control valve B. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

[0031] Example 1

[0032] An activated carbon regeneration acid gas scrubbing, dust removal, and cooling device, such as Figure 1 As shown, it includes a dynamic wave scrubber 1, a dynamic wave circulation pump 2, an elevated tank 3, an elevated tank circulation pump 4, a packed tower 5, a packed tower circulation pump 6, a dilute acid cooler 7, a reverse spray pipe thermometer 1-4, a dynamic wave scrubber acid gas outlet thermometer 1-6, and an automatic temperature control valve.

[0033] The top outlet of the dynamic wave scrubber 1 is connected to the lower part of the packed tower 5 via a pipe. The bottom of the packed tower 5 is sequentially connected to the packed tower circulation pump 6, the dilute acid cooler 7, and the high-level tank 3. The bottom of the dynamic wave scrubber 1 is sequentially connected to the high-level tank circulation pump 4 and the high-level tank 3. The bottom outlet of the high-level tank 3 is connected to the dynamic wave scrubber 1 via a pipe. The dynamic wave scrubber 1 includes a circulation tank 1-3, an overflow weir 1-1, and a reverse spray pipe 1-2. The bottom of the reverse spray pipe 1-2 is connected to the upper part of the circulation tank 1-3, and the overflow weir 1-1 is located at the top of the reverse spray pipe 1-2. The outlet of the dilute acid cooler 7 is also connected to the dilute acid inlet 5-1 of the packed tower via a pipe.

[0034] A gas outlet thermometer 1-6 for the acid gas of the dynamic wave scrubber is installed on the pipe connecting the top outlet of the dynamic wave scrubber 1 and the bottom of the packed tower 5.

[0035] A thermometer 1-4 is installed on the outer wall of the reverse nozzle 1-2.

[0036] The bottom outlet of the power wave washer 1 is connected in sequence to the power wave circulation pump 2 and the upper part of the reverse spray pipe 1-2.

[0037] A packing tower acid gas outlet 5-2 is provided at the top of the packed tower 5.

[0038] The top outlet of the dynamic wave scrubber 1 is the acid gas outlet 1-5 of the dynamic wave scrubber.

[0039] The dilute acid outlet 5-3 at the bottom of the packed tower 5 is sequentially connected to the packing tower circulation pump 6, the dilute acid cooler 7, and the inlet of the high-level tank 3.

[0040] The bottom outlet of the high-level tank 3 is connected to the overflow weir 1-1 on the power wave scrubber 1 through the dilute acid outlet pipe; the dilute acid outlet pipe is equipped with an automatic temperature control valve A 8, which can control the dilute acid flow rate according to the temperature signal fed back by the reverse spray pipe thermometer 1-4.

[0041] The bottom of the power wave washer 1 is connected in sequence to the high-level tank circulation pump 4 and the liquid inlet of the high-level tank 3.

[0042] The high tank circulating pump 4 is a variable frequency pump, which can feed back signals of the power wave scrubber acid gas outlet thermometer 1-6, and then control the pump operation frequency, so as to control the dilute acid flow.

[0043] The automatic temperature control valve B 9 is arranged on the dilute acid pipeline connected with the high tank 3. The temperature signal fed back by the power wave scrubber acid gas outlet thermometer 1-6 can be used to control the dilute acid flow.

[0044] The top of the reverse spray pipe 1-2 is also connected with the raw material acid gas pipeline.

[0045] The device is also provided with a PLC control system, and the power wave scrubber 1, the filler tower 5, the dilute acid cooler 7, the filler tower circulating pump 6, the overflow weir 1-1, the reverse spray pipe thermometer 1-4, the power wave scrubber acid gas outlet thermometer 1-6, the power wave circulating pump 2, the high tank circulating pump 4, the automatic temperature control valve A 8 and the automatic temperature control valve B 9 are connected with the PLC control system, and all of them are not limited to a specific model, and can realize the working function.

[0046] As shown in Figure 1 The top of the reverse spray pipe 1-2 of the 400 DEG C active carbon regenerated acid gas automatic power wave scrubber enters, and the scrubbing dilute acid enters the reverse spray pipe 1-2 after being pressurized by the power wave circulating pump 2. The acid gas is strongly contacted with the dilute acid in the reverse spray pipe 1-2, the acid gas is washed and dusted by the dilute acid, and the temperature of the acid gas is reduced to 80 DEG C, and then the acid gas is discharged from the top acid gas outlet 1-5 of the power wave scrubber 1 and enters the filler tower 5.

[0047] The acid gas enters from the lower part of the filler tower 5, and the dilute acid enters from the top filler tower dilute acid inlet 5-1 of the filler tower 5. The acid gas and the dilute acid are contacted in the filler tower 5, and the temperature is further reduced to 40 DEG C. The dilute acid in the filler tower 5 is discharged from the filler tower dilute acid outlet 5-3, pressurized by the filler tower circulating pump 6, and then enters the dilute acid cooler 7. The dilute acid is indirectly cooled by the circulating cooling water, and then returns to the top of the filler tower 5. At the same time, the outlet of the dilute acid cooler 7 also has a way to enter the high tank 3.

[0048] As shown in Figure 1 The liquid inlet of the high tank 3 is two parts, which comes from the power wave scrubber 1 and the dilute acid cooler 7 respectively. The dilute acid in the high tank 3 flows to the overflow weir 1-1 of the power wave scrubber 1 by itself. The dilute acid flows downward in the reverse spray pipe 1-2 from the overflow weir 1-1 and forms a liquid film protective layer on the reverse spray pipe 1-2, which avoids the damage of the high temperature of the reverse spray pipe 1-2. The reverse spray pipe thermometer 1-4 is arranged on the wall of the reverse spray pipe 1-2. If the wall temperature rises, the overflow dilute acid amount can be increased by the automatic temperature control valve A 8.

[0049] As shown in Figure 1As shown, the power wave scrubber 1 acid gas outlet pipeline is provided with a power wave scrubber acid gas outlet thermometer 1-6, and the high tank circulating pump 4 is a variable frequency pump; when the water content in the acid gas is high and the outlet temperature is high, the high tank circulating pump 4 can be stopped to supplement the dilute acid to the high tank 3 or reduce the amount of dilute acid, and at the same time, the automatic temperature control valve B9 is used to supplement the cooled dilute acid to the high tank 3.

[0050] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model belong to the scope of protection required by the utility model.

Claims

1. An activated carbon regeneration acid gas washing dust removal and cooling device, characterized in that, The device comprises a dynamic wave scrubber (1), a filler tower (5), a high tank (3), a dilute acid cooler (7); the top outlet of the dynamic wave scrubber (1) is connected with the lower part of the filler tower (5) through a pipeline, the bottom of the filler tower (5) is sequentially connected with the filler tower circulating pump (6), the dilute acid cooler (7) and the high tank (3) in sequence; the bottom of the dynamic wave scrubber (1) is sequentially connected with the high tank circulating pump (4) and the high tank (3) in sequence; the bottom outlet of the high tank (3) is connected with the dynamic wave scrubber (1) through a pipeline; the dynamic wave scrubber (1) comprises a circulating tank (1-3), an overflow weir (1-1) and a reverse spray pipe (1-2); the bottom of the reverse spray pipe (1-2) is communicated with the upper part of the circulating tank (1-3), and the overflow weir (1-1) is arranged on the top of the reverse spray pipe (1-2); the outlet of the dilute acid cooler (7) is also connected with the filler tower dilute acid inlet (5-1) through a pipeline.

2. The device according to claim 1, characterized in that, A dynamic wave scrubber acid gas outlet thermometer (1-6) is arranged on the pipeline connecting the top outlet of the dynamic wave scrubber (1) with the bottom of the filler tower (5).

3. The device according to claim 1, characterized in that, A reverse spray pipe thermometer (1-4) is arranged on the outer wall of the reverse spray pipe (1-2).

4. The device for washing, dust removing and temperature reducing of active carbon regeneration by acid gas according to claim 1, characterized in that, The bottom outlet of the dynamic wave scrubber (1) is sequentially connected with the dynamic wave circulating pump (2) and the upper part of the reverse spray pipe (1-2) in sequence.

5. The device for washing, dust removing and temperature reducing of the activated carbon regeneration acid gas according to claim 1, characterized in that, The filler tower dilute acid outlet (5-3) at the bottom of the filler tower (5) is sequentially connected with the filler tower circulating pump (6), the dilute acid cooler (7) and the liquid inlet of the high tank (3) in sequence.

6. The device for washing, dust removing and temperature reducing of active carbon regeneration by acid gas according to claim 1, characterized in that, The bottom outlet of the high tank (3) is connected with the overflow weir (1-1) on the dynamic wave scrubber (1) through a dilute acid outlet pipeline; an automatic temperature control valve A (8) is arranged on the dilute acid outlet pipeline.

7. The device according to claim 1, wherein the device is characterized by: An automatic temperature control valve B (9) is arranged on the dilute acid pipeline connecting the dilute acid cooler (7) with the high tank (3).

8. The device according to claim 1, wherein the device is characterized by: The top of the reverse spray pipe (1-2) is also connected with a raw material acid gas pipeline; the top of the filler tower (5) is provided with a filler tower acid gas outlet (5-2); the top outlet of the dynamic wave scrubber (1) is a dynamic wave scrubber acid gas outlet (1-5).

9. The device according to claim 1, characterized in that, The bottom of the dynamic wave scrubber (1) is sequentially connected with the liquid inlet of the high tank (3) in sequence.

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