CN210171187U - Tail gas white-removing device for acidolysis of titanium dioxide by sulfuric acid method - Google Patents
Tail gas white-removing device for acidolysis of titanium dioxide by sulfuric acid method Download PDFInfo
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- CN210171187U CN210171187U CN201920624955.2U CN201920624955U CN210171187U CN 210171187 U CN210171187 U CN 210171187U CN 201920624955 U CN201920624955 U CN 201920624955U CN 210171187 U CN210171187 U CN 210171187U
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Abstract
The utility model discloses a white device that disappears of sulfuric acid process titanium dioxide acidolysis tail gas, including alkali jar, alkali lye cooling tower and two spray towers that the symmetry set up, wherein, spray tower includes that the literary composition spouts the tower, the compound tower that spouts, alkali spouts the tower, chimney and circulating water pool, the literary composition spouts the tower, the compound tower that spouts, alkali spouts tower and chimney and communicates in proper order, the bottom and the circulating water pool of literary composition spout tower and compound tower intercommunication, the circulating water pool passes through pump and pipeline and communicates with the spray set in literary composition spout tower and the compound tower respectively, the alkali jar passes through pump and pipeline and communicates with the spray set in the alkali spouting tower, the bottom of alkali spouting tower passes through pipeline and alkali lye cooling tower input intercommunication, the output of alkali lye cooling tower passes through pump and pipeline and alkali jar intercommunication; the acidolysis tail gas sequentially passes through a venturi spray tower, a re-spray tower, an alkali spray tower and a chimney; the utility model discloses fuse original two spray towers together, two spray towers simultaneous workings are handled acidolysis tail gas, have improved acidolysis tail gas treatment effeciency, have reduced acidolysis tail gas temperature, have reached fine whitening effect.
Description
Technical Field
The utility model relates to a white device that disappears of sulfuric acid process titanium dioxide acidolysis tail gas belongs to sulfuric acid process titanium white powder production facility technical field.
Background
In the whole sulfuric acid method titanium dioxide industry, the tail gas treatment of acidolysis is always a very troublesome problem; the total amount of the waste gas discharged in the acidolysis reaction is not large, but the main reaction time is short, the waste gas is relatively concentrated in discharge, so that the discharge amount per unit time is huge, the temperature is high, the acid content is large, and the sulfuric acid mist waste gas has explosiveness, high temperature and high concentration; at present, two spray towers which are responsible for treating acidolysis tail gas are alternately used; the spray tower mainly comprises a venturi spray tower, a re-spray tower, a circulating water pool and an alkali spray tower; the working principle is that the acidolysis tail gas is extracted by a fan, is subjected to primary cooling by process water through a venturi spray tower, enters a circulating water tank, is subjected to secondary cooling by a re-spray tower, enters an alkali spray tower, and is further washed and absorbed by alkali liquor in the alkali spray tower, so that the whitening effect is achieved; according to field measurement, the discharge temperature of acidolysis tail gas is between 55 ℃ and 60 ℃; at present, the acidolysis tail gas cooling and whitening process by utilizing a spray tower has the following defects:
1. the volume is not large enough, and the acidolysis tail gas cannot be treated for enough buffer time;
2. two spray towers are used alternately, so that the acidolysis tail gas treatment efficiency is low;
3. there is not enough alkali liquor with lower temperature to absorb heat;
4. the alkali liquor is prepared by adding flake alkali, and the control effect on the concentration of the alkali liquor is poor, so that the treatment effect on acidic substances in the acidolysis tail gas is reduced.
Disclosure of Invention
For solving prior art's not enough, the utility model provides a white device disappears of sulfate process titanium dioxide acidolysis tail gas fuses two original spray towers together, and two spray towers are worked as simultaneously and are handled acidolysis tail gas, have increased the equipment volume, have improved acidolysis tail gas treatment efficiency, newly increase an alkali lye cooling tower and be used for cooling cycle alkali lye, supply with the alkali spray tower and use, and the lower alkali lye of the temperature of capacity has reduced acidolysis tail gas temperature, has reached fine white effect of disappearing simultaneously.
The utility model discloses the technical scheme who adopts does:
the tail gas white removal device for titanium dioxide acidolysis by a sulfuric acid method comprises an alkali tank, an alkali liquor cooling tower and two symmetrically arranged spray towers, wherein each spray tower comprises a spray tower, a re-spray tower, an alkali spray tower, a chimney and a circulating water tank, the spray towers, the re-spray tower, the alkali spray tower and the chimney are sequentially communicated, the bottoms of the spray towers and the re-spray tower are communicated with the circulating water tank, the circulating water tank is respectively communicated with the spray devices in the spray towers through a pump and a pipeline, the alkali tank is communicated with the spray devices in the alkali spray tower through a pump and a pipeline, the bottom of the alkali spray tower is communicated with the input end of the alkali liquor cooling tower through a pipeline, and the output end of the alkali liquor cooling tower is communicated with the alkali tank through a pump and a pipeline; the acidolysis tail gas sequentially passes through a venturi spray tower, a re-spray tower, an alkali spray tower and a chimney.
As a further preferred aspect of the present invention, the two chimneys of the two spray towers are communicated with each other or the two spray towers share one chimney; the two chimneys are communicated with each other, so that the fluidity of the acidolysis tail gas can be improved, and the treatment efficiency of the acidolysis tail gas is accelerated; the design that two spray towers share one chimney can also be adopted, and the size of the chimney is increased.
As a further preference of the utility model, the circulating water tank is provided with a process water cooling device for cooling the process water in the circulating water tank; further reducing the temperature of the process water in the circulating water tank, and improving the cooling effect of the venturi spray tower and the re-spray tower on the acidolysis tail gas.
As a further preference of the utility model, a plurality of spraying devices are arranged in the alkali spraying tower, and the plurality of spraying devices are arranged in the alkali spraying tower at intervals from top to bottom; the alkali liquor adopts the measures of multi-stage spraying and flowing circulation supply, thereby avoiding the condition of unstable alkali liquor concentration and obviously improving the whitening effect of acidolysis tail gas.
The beneficial effects of the utility model reside in that: the process water in the circulating water tank is pressurized by a pump and then sprayed out by a spray device in an venturi spray tower and a re-spray tower, the acidolysis tail gas is subjected to primary temperature reduction by the venturi spray tower and then enters the re-spray tower for secondary temperature reduction, the acidolysis tail gas subjected to secondary temperature reduction by the re-spray tower enters an alkali spray tower, the process water flows back to the circulating water tank, a process water cooling device is used for cooling the process water in the circulating water tank, alkali liquor in an alkali tank is pressurized by the pump and then sprayed out by the spray device in the alkali spray tower, the acidolysis tail gas is washed and absorbed by alkali liquor with lower temperature in the alkali spray tower and then discharged by a chimney, the alkali liquor is cooled by an alkali liquor cooling tower and then is conveyed back to the alkali tank, and the alkali liquor cooling tower is used for cooling the alkali liquor; the utility model discloses fuse original two spray towers together, and two spray towers simultaneous workings are handled acidolysis tail gas, have increased the equipment volume, have improved acidolysis tail gas treatment effeciency, and acidolysis tail gas cooling is effectual, and a newly-increased alkali lye cooling tower is used for the cooling cycle alkali lye, supplies with alkali spray tower and uses, and the lower alkali lye of the temperature of capacity has reduced acidolysis tail gas temperature, has reached fine white effect of disappearing simultaneously.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the main reference numerals in the figures have the following meanings:
1-spray tower, 2-re-spray tower, 3-alkali spray tower, 4-chimney, 5-circulating water pool, 6-alkali tank, 7-alkali liquor cooling tower and 8-process water cooling device.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1: the embodiment is a tail gas white removal device for titanium dioxide acidolysis by a sulfuric acid method, and the tail gas white removal device comprises an alkali tank 6, an alkali liquor cooling tower 7 and two symmetrically arranged spray towers, wherein each spray tower comprises a spray tower 1, a re-spray tower 2, an alkali spray tower 3, a chimney 4 and a circulating water tank 5, the spray towers 1, the re-spray towers 2, the alkali spray tower 3 and the chimney 4 are sequentially communicated, the bottoms of the spray towers 1 and 2 are communicated with the circulating water tank 5, the circulating water tank 5 is respectively communicated with the spray devices in the spray towers 1 and 2 through a pump and a pipeline, the alkali tank 6 is communicated with the spray device in the alkali spray tower 3 through a pump and a pipeline, the bottom of the alkali spray tower 3 is communicated with the input end of the alkali liquor cooling tower 7 through a pipeline, and the output end of the alkali liquor cooling tower 7 is communicated with the alkali tank 6 through a pump and a pipeline; the acidolysis tail gas sequentially passes through a venturi spray tower 1, a re-spray tower 2, an alkali spray tower 3 and a chimney 4.
In the embodiment, the two chimneys 4 of the two spray towers are communicated with each other, and the two chimneys 4 are communicated with each other, so that the flowability of the acidolysis tail gas can be improved, and the treatment efficiency of the acidolysis tail gas is accelerated; in practical application, the design that two spray towers share one chimney can be adopted, and the size of the chimney is increased.
In the embodiment, a process water cooling device 8 for cooling the process water in the circulating water tank 5 is arranged in the circulating water tank 5; further reducing the temperature of the process water in the circulating water tank 5, and improving the cooling effect of the venturi spray tower 1 and the re-spray tower 2 on the acidolysis tail gas.
In the embodiment, a plurality of spraying devices are arranged in the alkali spraying tower 3, and the plurality of spraying devices are arranged in the alkali spraying tower 3 at intervals from top to bottom; the alkali liquor adopts the measures of multi-stage spraying and flowing circulation supply, so that the condition of unstable alkali liquor concentration is avoided, and the whitening effect of acidolysis tail gas is obviously improved; in this embodiment, the alkali solution with stable concentration in a fixed circulation manner is used to replace the alkali solution which is prepared by adding flake alkali and has low replacement frequency in the prior art.
The working process of the embodiment is as follows: after two chimneys 4 are opened, acid hydrolysis tail gas is simultaneously extracted by two fans, process water in a circulating water tank 5 is pressurized by a pump and then sprayed out by spraying devices in an upward spraying tower 1 and a backward spraying tower 2, the acid hydrolysis tail gas is subjected to primary temperature reduction by the upward spraying tower 1 and then enters the backward spraying tower 2 for secondary temperature reduction, the acid hydrolysis tail gas subjected to secondary temperature reduction by the backward spraying tower 2 enters an alkali spraying tower 3, the process water flows back into the circulating water tank 5, a process water cooling device 8 is used for cooling the process water in the circulating water tank 5, alkali liquor in an alkali tank 6 is pressurized by the pump and then is sprayed out by the spraying device in the alkali spraying tower 3, the acid hydrolysis tail gas is washed and absorbed by lower-temperature alkali liquor in the alkali spraying tower 3 and then is discharged by the chimneys 4, the alkali liquor is cooled by an alkali liquor cooling tower 7 and then is conveyed back to the alkali tank 6, and the alkali liquor cooling tower 7 is used for cooling; the volume of the equipment is increased, the spraying amount of the alkali spraying tower 3 is increased, multi-stage spraying is realized, the temperature of the alkali liquor is lower, a good effect of cooling the acidolysis tail gas is achieved, meanwhile, the alkali liquor adopts a flowing circulation supply measure, the condition that the concentration of the alkali liquor is unstable is avoided, and the whitening effect of the acidolysis tail gas is remarkably improved; through field measurement, the discharge temperature of the acidolysis tail gas treated by the method is 20-25 ℃, the discharge temperature of the acidolysis tail gas is obviously reduced, and the discharge amount of the acidolysis tail gas is obviously reduced compared with the prior art.
The utility model discloses fuse original two spray towers together, and two spray towers simultaneous workings are handled acidolysis tail gas, have increased the equipment volume, have improved acidolysis tail gas treatment effeciency, and acidolysis tail gas cooling is effectual, and a newly-increased alkali lye cooling tower is used for the cooling cycle alkali lye, supplies with alkali spray tower and uses, and the lower alkali lye of the temperature of capacity has reduced acidolysis tail gas temperature, has reached fine white effect of disappearing simultaneously.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. Sulfate process titanium dioxide acidolysis tail gas white device that disappears, its characterized in that: the spray tower comprises a venturi spray tower, a re-spray tower, an alkali spray tower, a chimney and a circulating water tank, wherein the venturi spray tower, the re-spray tower, the alkali spray tower, the chimney and the circulating water tank are sequentially communicated; the acidolysis tail gas sequentially passes through a venturi spray tower, a re-spray tower, an alkali spray tower and a chimney.
2. The device for removing acid hydrolysis tail gas from titanium dioxide by sulfuric acid process according to claim 1, wherein two chimneys of the two spray towers are communicated with each other or one chimney is shared by the two spray towers.
3. The sulfuric acid process titanium dioxide acidolysis tail gas whitening device according to claim 1, wherein a process water cooling device for cooling the process water in the circulating water tank is arranged in the circulating water tank.
4. The device for removing acid hydrolysis tail gas from titanium dioxide by sulfuric acid process according to claim 1, wherein a plurality of spraying devices are arranged in the alkali spraying tower, and the plurality of spraying devices are arranged in the alkali spraying tower at intervals from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624955.2U CN210171187U (en) | 2019-05-05 | 2019-05-05 | Tail gas white-removing device for acidolysis of titanium dioxide by sulfuric acid method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920624955.2U CN210171187U (en) | 2019-05-05 | 2019-05-05 | Tail gas white-removing device for acidolysis of titanium dioxide by sulfuric acid method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210171187U true CN210171187U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920624955.2U Active CN210171187U (en) | 2019-05-05 | 2019-05-05 | Tail gas white-removing device for acidolysis of titanium dioxide by sulfuric acid method |
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| Country | Link |
|---|---|
| CN (1) | CN210171187U (en) |
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2019
- 2019-05-05 CN CN201920624955.2U patent/CN210171187U/en active Active
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