CN215428192U - Graphite purification gas washing device - Google Patents
Graphite purification gas washing device Download PDFInfo
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- CN215428192U CN215428192U CN202121468354.0U CN202121468354U CN215428192U CN 215428192 U CN215428192 U CN 215428192U CN 202121468354 U CN202121468354 U CN 202121468354U CN 215428192 U CN215428192 U CN 215428192U
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Abstract
The utility model relates to a graphite purification gas washing device, which is used in the technical field of graphite purification and solves the problem of environmental pollution of waste acid gas. The device comprises a waste gas pipe, a clean water pipe, a spray head, a venturi tube, a gravity dehydrator, a quick-opening cover, a spraying gas inlet pipe, a gas inlet, a gas outlet, a water tank, a spray tower, a water pump, an alkali outlet pipe, an alkali water valve, an alkali water pipe, a spray header pipe, a first spray valve, a first spray pipe, a second spray valve, a second spray pipe, a third spray valve, a third spray pipe, a manhole, a first silk screen, a second silk screen, a third silk screen, a drain outlet, a drain pipe, a drain valve, a chimney, a purification air cylinder, a fan, a purification gas port, a first liquid dividing pipe, a second liquid dividing pipe, a third liquid dividing pipe, an alkali water dividing pipe and a spray head. Through enterprise's production practice, the gas washing is effectual, simple structure, easy and simple to handle, can wash gas in succession, has reduced graphite purification cost simultaneously, has obvious environmental benefit and economic benefits.
Description
Technical Field
The utility model belongs to the technical field of graphite purification, and particularly relates to a graphite purification gas washing device.
Background
In modern industrial technology, the purification of graphite mainly comprises a chemical method and a physical method, wherein the chemical method is commonly used as an acid-base method. In the acid-base method, the main components include NaOH-HCl and NaOH-H2SO4、NaOH-HCl-HNO3And the like, wherein the NaOH-HCl method is the most common.
The NaOH-HCl method mainly utilizes impurities in graphite such as SiO2、Al2O3、Fe2O3MgO and CaO react with NaOH at high temperature to purify, part of impurities generate products dissolved in water, and the products are leached and washed by water to be removed. The other part of the impurities do not react or generate hydroxide which is insoluble in water, and then the hydroxide is soaked by hydrochloric acid to be converted into soluble chloride which is washed by water to be removed. In the acidolysis process, graphite and sulfuric acid are fully mixed and reacted, and then discharged to a middle bin, and pumped to a washing tank by a wet material pump. Repeatedly washing in a washing tank to remove acid (alkali) and obtain high-purity graphite powder.
In the actual process, in order to ensure the purity of the purified graphite, the addition of acid (alkali) is higher than the theoretical value by more than 15%, so that the consumption of acid (alkali) is very high, after the steps of alkali fusion and acidolysis, materials contain a large amount of acid (alkali), acidolysis in a workshop is carried out at high temperature which can reach 80-100 ℃, a large amount of waste acid gas is generated, solid particles are mixed in the waste acid gas, mainly impurity particles in the graphite and small graphite particles which are carried in the graphite, and the difficulty is brought to the emission of waste gas. The waste acid gas needs to be purified to be discharged, and the purification process is complex and high in cost due to the acid-base purification process. In order to better ensure the exhaust emission and reduce the cost, the wire mesh gas washing device with high efficiency, simple structure and simple and convenient operation is researched to solve the problems in the prior art.
Disclosure of Invention
The technical problem is solved by the following technical scheme. A graphite purification gas washing device, including the exhaust pipe, the clean water pipe, the shower nozzle, the venturi tube, the gravity dehydrator, uncap soon, spray the intake pipe, the air inlet, the gas outlet, the pond, the spray column, the water pump, go out the alkali pipe, go out the alkali valve, the alkali water pipe, spray header, first spray valve, first spray pipe, the second spray valve, the second spray pipe, the third spray valve, the third spray pipe, the manhole, first silk screen, the second silk screen, the third silk screen, the drain, the blow off pipe, the blowoff valve, the chimney, purify the inflator, the fan, purify gas port, first branch liquid pipe, the second branch liquid pipe, the third branch liquid pipe, the alkali water jar, the shower head.
Waste acid gas generated in a workshop of a production workshop is introduced into an exhaust pipe, a venturi is connected to the middle section of the exhaust pipe, one end of a clean water pipe is connected to a clean water source, the other end of the clean water pipe is connected with a spray head, the spray head extends into the throat of the venturi, and clean water sprayed from the spray head passes through the venturi; the other end of the exhaust gas pipe is connected with a gravity dehydrator, and an air inlet and a quick-opening cover are arranged on the gravity dehydrator; one end of the spraying air inlet pipe is connected to the air inlet, the other end of the spraying air inlet pipe is connected to the air outlet, and the air outlet is arranged on the side surface of the spraying tower close to the bottom end;
the gravity dehydrator is conical, the bottom of the gravity dehydrator is provided with a drain outlet, the drain outlet is connected to a drain pipe, one end of the drain pipe is connected with a drain valve, and the other end of the drain pipe is connected to the spray tower;
the spray tower is cylindrical, a first spray pipe, a first silk screen, a second spray pipe, a second silk screen, a third spray pipe and a third silk screen are arranged in the spray tower from top to bottom, a water pool is arranged at the lower part of the third silk screen, and a drain pipe is connected to the water pool of the spray tower;
preferably, the first silk screen, the second silk screen and the third silk screen are sheet-shaped metal silk screens or high molecular polymer silk screens, and 20-30 layers are formed;
more than 1 spray header is arranged on the first spray pipe, the second spray pipe and the third spray pipe, the number of the spray headers is set according to the diameter of the spray tower, and one spray header can be arranged at 10-30 cm;
on the side wall of the spray tower, a manhole is respectively arranged under the first spray pipe, the second spray pipe and the third spray pipe and used for observing the spraying condition; a manhole is arranged on the side wall of the water tank and below the spraying air inlet pipe;
the side wall of a water pool of the spray tower is provided with an alkali outlet pipe, the alkali outlet pipe is connected with an alkali outlet valve, the alkali outlet valve is also connected with a water pump, the water pump is connected with a spray header pipe, the spray header pipe is connected with a first liquid distribution pipe, a second liquid distribution pipe and a third liquid distribution pipe, the first liquid distribution pipe, the second liquid distribution pipe and the third liquid distribution pipe are respectively connected with a first spray valve, a second spray valve and a third spray valve, and the other ends of the first liquid distribution pipe, the second liquid distribution pipe and the third liquid distribution pipe are respectively connected with a first spray pipe, a second spray pipe and a third spray pipe in the spray tower to convey alkali liquor to the first spray pipe, the second spray pipe and the third spray pipe;
the side wall of the spray tower is connected with an alkali water pipe, an alkali water valve is arranged on the alkali water pipe, and the other end of the alkali water pipe is connected with an alkali water tank;
the upper part of the spray tower is provided with a purification air port, a purification air cylinder is connected to the purification air port, the purification air cylinder is connected to the fan, and the other end of the fan is connected to the chimney.
When the device works, the waste gas pipe receives waste acid gas which is conveyed from a production workshop and is mixed with solid particles, the waste acid gas is combined with water outlet of a spray head at the throat of the venturi pipe, the waste acid gas is flushed into the gravity dehydrator at the speed of 80-150m/s under the acceleration action of the venturi pipe, and the waste acid gas is flushed through the gravity dehydrator to wash large particle impurities and then enters the spray tower. The spraying tower is internally provided with a first wire mesh, a second wire mesh and a third wire mesh, alkali liquor enters a spraying main pipe and then respectively enters a first liquid dividing pipe, a second liquid dividing pipe and a third liquid dividing pipe, the alkali liquor is sprayed on the first wire mesh, the second wire mesh and the third wire mesh to form a liquid film, so that impurity particles in waste gas are intercepted under the action of the liquid film and are merged into water of the alkali liquor of the liquid film, the water flows into a water pool at the lower part of the spraying tower, acidic substances in the waste acid gas and the alkali liquor sprayed from a spraying head are subjected to a neutralization reaction, and the reacted liquid enters the water pool. And opening an alkali water valve after the pH value in the water tank reaches a certain value, and supplementing alkali liquor into the water tank. After being filtered by the first wire mesh, the second wire mesh and the third wire mesh, impurity particles in the waste gas are fully intercepted, acid gas is neutralized by alkali liquor, and clean gas after being fully washed and purified is discharged through a fan and a chimney.
The quick-opening cover on the gravity dehydrator can be used for injecting liquid such as water into the gravity dehydrator, and the blow-down valve on the lower part is used for periodically opening and discharging particle sediment carried in waste acid gas in the gravity dehydrator and the water tank.
The utility model discloses a practice through enterprise's workshop, the gas washing is effectual, simple structure, easy and simple to handle, but continuous gas washing. In practical application, the method has obvious effects of environmental protection and energy conservation, solves the problem of environmental pollution caused by waste acid gas obtained by graphite acid-base purification, reduces the graphite purification cost, and has obvious environmental benefit, social benefit and economic benefit.
Drawings
FIG. 1 is a schematic view of a gas scrubbing apparatus according to the present invention.
The figure is as follows:
1 waste gas pipe, 2 clean water pipe, 3 spray head, 4 venturi tube, 5 gravity dehydrator, 6 quick-opening cover, 7 spray air inlet pipe, 8 air inlet, 9 air outlet, 10 water tank, 11 spray tower, 12 water pump, 13 alkali outlet pipe, 14 alkali outlet valve, 15 alkali water valve, 16 alkali water pipe, 17 spray header pipe, 18 first spray valve, 19 first spray pipe, 20 second spray valve, 21 second spray pipe, 22 third spray valve, 23 third spray pipe, 24 manhole, 25 first wire mesh, 26 second wire mesh, 27 third wire mesh, 28 drain, 29 drain, 30 drain valve, 31 chimney, 32 purification air cylinder, 33 fan, 34 purification air port, 35 first liquid dividing pipe, 36 second liquid dividing pipe, 37 third liquid dividing pipe, 38 alkali water tank and spray head 39.
Detailed Description
As shown in fig. 1, the present invention solves the technical problem by the following technical solution. The graphite purified gas washing device comprises a waste gas pipe 1, a clean water pipe 2, a spray head 3, a venturi 4, a gravity dehydrator 5, a quick-opening cover 6, a spraying air inlet pipe 7, an air inlet 8, an air outlet 9, a water tank 10, a spray tower 11, a water pump 12, an alkali outlet pipe 13, an alkali outlet valve 14, an alkali water valve 15, an alkali water pipe 16, a spray header 17, a first spray valve 18, a first spray pipe 19, a second spray valve 20, a second spray pipe 21, a third spray valve 22, a third spray pipe 23, a manhole 24, a first wire mesh 25, a second wire mesh 26, a third wire mesh 27, a sewage outlet 28, a sewage discharge pipe 29, a sewage discharge valve 30, a chimney 31, a purification air cylinder 32, a fan 33, a purification air port 34, a first liquid separation pipe 35, a second liquid separation pipe 36, a third liquid separation pipe 37, an alkali water tank 38 and a spray head 39.
Waste acid gas generated in a workshop of a production workshop is introduced into an exhaust pipe 1, a venturi 4 is connected to the middle section of the exhaust pipe 1, one end of a clean water pipe 2 is connected to a clean water source, the other end of the clean water pipe is connected with a spray head 3, the spray head 3 extends into the throat of the venturi 4, and clean water sprayed from the spray head 3 passes through the venturi 4; the other end of the waste gas pipe 1 is connected with a gravity dehydrator 5, and an air inlet 8 and a quick-opening cover 6 are arranged on the gravity dehydrator 5; one end of the spraying air inlet pipe 7 is connected to the air inlet 8, the other end of the spraying air inlet pipe is connected to the air outlet 9, and the air outlet 9 is arranged on the side surface of the spraying tower 11 close to the bottom end;
the gravity dehydrator 5 is conical, the bottom of the gravity dehydrator is provided with a sewage outlet 28, the sewage outlet 28 is connected to a sewage pipe 29, one end of the sewage pipe 29 is connected with a sewage valve 30, and the other end of the sewage pipe 29 is connected to the spray tower 11;
the spray tower 11 is cylindrical, a first spray pipe 19, a first silk screen 25, a second spray pipe 21, a second silk screen 26, a third spray pipe 23 and a third silk screen 27 are arranged in the spray tower from top to bottom, a water pool 10 is arranged at the lower part of the third silk screen 27, and a drain pipe 29 is connected to the water pool 10 of the spray tower 11;
preferably, the first, second and third screens 25, 26 and 27 are sheet-shaped metal screens or polymer screens, 20-30 layers;
more than 1 spray header 39 is arranged on the first spray pipe 19, the second spray pipe 21 and the third spray pipe 23, the number of the spray headers 39 is set according to the diameter of the spray tower 11, and one spray header can be arranged at intervals of 10-30 cm;
a manhole 24 is respectively arranged on the side wall of the spray tower 11 below the first spray pipe 19, the second spray pipe 21 and the third spray pipe 23 and is used for observing the spraying condition; a manhole 24 is arranged on the side wall of the water tank 10 and below the spraying air inlet pipe 7;
an alkali outlet pipe 13 is arranged on the side wall of the spray tower water pool 10, the alkali outlet 13 is connected with an alkali outlet valve 14, the alkali outlet valve 14 is connected with a water pump 12, the water pump 12 is connected with a spray header 17, the spray header 17 is connected with a first liquid distribution pipe 35, a second liquid distribution pipe 36 and a third liquid distribution pipe 37, the first liquid distribution pipe 35, the second liquid distribution pipe 36 and the third liquid distribution pipe 37 are respectively connected with a first spray valve 18, a second spray valve 20 and a third spray valve 22, and the other ends of the first liquid distribution pipe 35, the second liquid distribution pipe 36 and the third liquid distribution pipe 37 are respectively connected with a first spray pipe 19, a second spray pipe 21 and a third spray pipe 23 in the spray tower 11, so as to transmit alkali liquor to the three spray pipes;
the side wall of the spray tower 11 is connected with an alkaline water pipe 16, an alkaline water valve 15 is arranged on the alkaline water pipe 16, and the other end of the alkaline water pipe 16 is connected with an alkaline water tank 38;
the upper part of the spray tower 11 is provided with a purifying air port 34, the purifying air port 34 is connected with a purifying air cylinder 32, the purifying air cylinder 32 is connected with a fan 33, and the other end of the fan 33 is connected with a smoke cylinder 31.
When the device works, the waste gas pipe 1 receives waste acid gas which is conveyed from a production workshop and is mixed with solid particles, the waste acid gas is combined with water discharged from a spray head 3 at the throat of a venturi 4, the waste acid gas is flushed into a gravity dehydrator 5 at the speed of 80-150m/s under the acceleration action of the venturi 4, and the waste acid gas is flushed through the gravity dehydrator 5, so that large-particle impurities are washed off and then enters a spray tower 11. The first wire mesh 25, the second wire mesh 26 and the third wire mesh 27 are arranged in the spray tower 11, alkali liquor enters the spray header pipe 17 and then respectively enters the first liquid dividing pipe 35, the second liquid dividing pipe 36 and the third liquid dividing pipe 36, the alkali liquor is sprayed onto the first wire mesh 25, the second wire mesh 26 and the third wire mesh 27 to form a liquid film, so that impurity particles in waste gas are intercepted under the action of the liquid film and are merged into water of the alkali liquor of the liquid film, the water flows into the water tank 10 at the lower part of the spray tower 11, acidic substances in the waste acid gas and the alkali liquor sprayed from the spray header 39 are subjected to neutralization reaction, and the reacted liquid enters the water tank 10. After the pH value in the water tank 10 reaches a certain value, the alkaline water valve 15 is opened, and alkaline liquor is supplemented into the water tank. After being filtered by the first wire mesh 25, the second wire mesh 26 and the third wire mesh 27, impurity particles in the waste gas are fully intercepted, acid gas is neutralized by alkali liquor, and clean gas after being fully washed and purified is discharged through the fan 33 and the chimney 31.
The quick-opening cover 6 on the gravity dehydrator 5 can inject liquid such as water into the quick-opening cover, and the blow-down valve 30 on the lower part is opened periodically to discharge particle sediment carried in waste acid gas in the gravity dehydrator 5 and the water tank 10.
The utility model discloses a practice through enterprise's workshop, the gas washing is effectual, simple structure, easy and simple to handle, but continuous gas washing. In practical application, the method has obvious effects of environmental protection and energy conservation, solves the problem of environmental pollution caused by waste acid gas obtained by graphite acid-base purification, reduces the graphite purification cost, and has obvious environmental benefit, social benefit and economic benefit.
Claims (5)
1. A graphite purification gas washing device is characterized in that: the device comprises a waste gas pipe, a clean water pipe, a spray head, a venturi tube, a gravity dehydrator, a quick-opening cover, a spraying gas inlet pipe, a gas inlet, a gas outlet, a water tank, a spraying tower, a water pump, an alkali outlet pipe, an alkali outlet valve, an alkali water pipe, a spraying main pipe, a first spraying valve, a first spraying pipe, a second spraying valve, a second spraying pipe, a third spraying valve, a third spraying pipe, a manhole, a first silk screen, a second silk screen, a third silk screen, a drain outlet, a drain pipe, a drain valve, a chimney, a purification gas cylinder, a fan, a purification gas port, a first liquid dividing pipe, a second liquid dividing pipe, a third liquid dividing pipe, an alkali water dividing pipe and a spraying head; the middle section of the waste gas pipe is connected with a venturi, one end of the clean water pipe is connected with a clean water source, the other end of the clean water pipe is connected with a spray head, and the spray head extends into the throat of the venturi; the other end of the exhaust gas pipe is connected with a gravity dehydrator, and an air inlet and a quick-opening cover are arranged on the gravity dehydrator; one end of the spraying air inlet pipe is connected to the air inlet, the other end of the spraying air inlet pipe is connected to the air outlet, and the air outlet is arranged on the side surface of the spraying tower close to the bottom end; the bottom of the spray tower is provided with a drain outlet, the drain outlet is connected to a drain pipe, one end of the drain pipe is connected with a drain valve, the other end of the drain pipe is connected to the spray tower, a first spray pipe, a first silk screen, a second spray pipe, a second silk screen, a third spray pipe and a third silk screen are arranged in the spray tower from top to bottom, the lower part of the third silk screen is a water pool, and the drain pipe is connected to the water pool of the spray tower; more than 1 spray header is arranged on the first spray pipe, the second spray pipe and the third spray pipe; an alkali outlet pipe is arranged on the side wall of a water pool of the spray tower and is connected with an alkali outlet valve, the alkali outlet valve is also connected with a water pump, the water pump is connected with a spray header pipe, and the spray header pipe is connected with a first liquid dividing pipe, a second liquid dividing pipe and a third liquid dividing pipe; the other ends of the first liquid dividing pipe, the second liquid dividing pipe and the third liquid dividing pipe are respectively connected to a first spray pipe, a second spray pipe and a third spray pipe in the spray tower, and alkali liquor is conveyed to the first spray pipe, the second spray pipe and the third spray pipe; the upper part of the spray tower is provided with a purification air port, a purification air cylinder is connected to the purification air port, the purification air cylinder is connected to the fan, and the other end of the fan is connected to the chimney.
2. The apparatus of claim 1, wherein: the first silk screen, the second silk screen and the third silk screen are sheet-shaped metal silk screens or high molecular polymer silk screens, and 20-30 layers are formed.
3. The apparatus of claim 1, wherein: the number of the spray headers is set according to the diameter of the spray tower, and one spray header is arranged at 10-30 cm.
4. The apparatus of claim 1, wherein: on the side wall of the spray tower, a manhole is respectively arranged under the first spray pipe, the second spray pipe and the third spray pipe and used for observing the spraying condition; on the side wall of the pool, a manhole is arranged below the spraying air inlet pipe.
5. The apparatus of claim 1, wherein: the side wall of the spray tower is connected with an alkali water pipe, an alkali water valve is arranged on the alkali water pipe, and the other end of the alkali water pipe is connected with an alkali water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121468354.0U CN215428192U (en) | 2021-06-30 | 2021-06-30 | Graphite purification gas washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121468354.0U CN215428192U (en) | 2021-06-30 | 2021-06-30 | Graphite purification gas washing device |
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| Publication Number | Publication Date |
|---|---|
| CN215428192U true CN215428192U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121468354.0U Active CN215428192U (en) | 2021-06-30 | 2021-06-30 | Graphite purification gas washing device |
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| CN (1) | CN215428192U (en) |
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2021
- 2021-06-30 CN CN202121468354.0U patent/CN215428192U/en active Active
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