CN214513725U - Titanium tetrachloride tail gas treatment system - Google Patents
Titanium tetrachloride tail gas treatment system Download PDFInfo
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- CN214513725U CN214513725U CN202022744493.3U CN202022744493U CN214513725U CN 214513725 U CN214513725 U CN 214513725U CN 202022744493 U CN202022744493 U CN 202022744493U CN 214513725 U CN214513725 U CN 214513725U
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Abstract
The utility model relates to a titanium tetrachloride tail gas processing system. The titanium tetrachloride tail gas treatment system comprises a neutralizer, a settling tank, a gas filter, a tail gas water washing tower, a first falling film absorber, a tail gas alkaline washing tower and a tail gas fan; the neutralizer is provided with an air inlet, an air outlet and an air outlet, the settling tank is connected with the liquid outlet, the air inlet end of the gas filter is connected with the air outlet, the air outlet end of the gas filter is connected with the air inlet end of the tail gas washing tower, the air outlet end of the tail gas washing tower is connected with the air inlet end of the first falling film absorber, the air outlet end of the first falling film absorber is connected with the air inlet end of the tail gas alkaline washing tower, and the air outlet end of the tail gas alkaline washing tower is connected with the air inlet end of the tail gas fan. Compare tail gas treatment system among the prior art, the utility model discloses a tail gas treatment system can handle the multiple composition in the tail gas, and the treatment effect is better, has avoided causing the pollution to the atmosphere.
Description
Technical Field
The utility model belongs to the technical field of the tail gas treatment system, especially, relate to a titanium tetrachloride tail gas treatment system.
Background
TiCl4Is a main intermediate raw material of titanium industries such as titanium sponge and the like. At present, TiCl is industrially produced4Generally carried out by boiling chlorination and fused salt chlorination, TiCl4In the production process, a large amount of tail gas is generated due to a plurality of reasons such as side reaction of raw material impurities, low main reaction efficiency, insufficient subsequent condensation and the like. The tail gas generally contains HCl and Cl2、CO、CO2、SiCl4、TiCl4Etc., and a large amount of solid particles are included. In order to purify the tail gas, the tail gas reaches the emission standard. At present, TiCl4The tail gas produced in the production process is generally treated by neutralization, filtration and discharge or is treated by slag spraying.
Chinese utility model patent with publication number CN204275790U discloses a processing apparatus for hydrochloric acid is retrieved to titanium tetrachloride production tail gas, the air inlet and the chlorination tail gas pipe connection that bubble cap tower lower part was established, the top of bubble cap tower is equipped with the water shower nozzle, the pipe connection that bubble cap tower bottom was established is on the upper portion of absorption tower, the pipeline that bubble cap tower upper portion was established and the sub-unit connection of absorption tower, the below of absorption tower is equipped with the acid-proof pump and is connected with the upper portion of bubble cap tower through the pipeline, be equipped with shell and tube graphite falling film absorber in the absorption tower, the pipeline and the alkali lye of absorption tower top spray absorbing device and be connected, the lower part of absorption tower is equipped with the pipeline and is connected with the hydrochloric acid storage tank. Due to TiCl4The tail gas generated in the production process has complex components and more impurity types, most impurities in the wastewater cannot be removed by the treatment device, and the treatment effect is betterPoor, causing air pollution after discharge.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a titanium tetrachloride tail gas processing system to solve the titanium tetrachloride tail gas processing system among the prior art and handle the poor technical problem of effect.
The utility model discloses a titanium tetrachloride tail gas processing system's technical scheme is:
a titanium tetrachloride tail gas treatment system comprises a neutralizer, a settling tank, a gas filter, a tail gas water scrubber, a first falling film absorber, a tail gas alkali scrubber and a tail gas fan;
the neutralizer is provided with an air inlet, an air outlet and an air outlet, the settling tank is connected with the liquid outlet, the air inlet end of the gas filter is connected with the air outlet, the air outlet end of the gas filter is connected with the air inlet end of the tail gas washing tower, the air outlet end of the tail gas washing tower is connected with the air inlet end of the first falling film absorber, the air outlet end of the first falling film absorber is connected with the air inlet end of the tail gas alkaline washing tower, and the air outlet end of the tail gas alkaline washing tower is connected with the air inlet end of the tail gas fan.
As a further improvement to the above technical solution, the tail gas treatment system further includes a reaction tower, an air inlet end of the reaction tower is connected with an air outlet end of the tail gas washing tower, an air outlet end of the reaction tower is connected with an air inlet end of the falling film absorber, a ferrous chloride solution is arranged on the lower side inside the reaction tower, and a first spraying mechanism for spraying the ferrous chloride solution is arranged on the upper side inside the reaction tower.
As a further improvement to the above technical solution, the tail gas treatment system further includes a second falling film absorber, an air inlet end of the second falling film absorber is connected to an air outlet end of the tail gas water washing tower, and an air outlet end of the second falling film absorber is connected to an air inlet end of the reaction tower.
As a further improvement to the technical scheme, the tail gas treatment system further comprises a wire mesh demister, and the gas inlet end of the wire mesh demister is connected with the gas outlet end of the tail gas fan.
As a further improvement to the technical scheme, the tail gas treatment system further comprises a chimney, and the gas inlet end of the chimney is connected with the gas outlet end of the wire mesh demister.
As a further improvement to the technical scheme, alkali liquor is arranged on the lower side inside the tail gas alkali washing tower, and a second spraying mechanism used for spraying the alkali liquor is arranged on the upper side inside the tail gas alkali washing tower.
As a further improvement to the technical scheme, a PH meter for detecting the PH value of the alkali liquor is arranged on the tail gas alkaline washing tower.
As a further improvement to the technical scheme, a baffle plate is arranged in the neutralizer.
The utility model provides a titanium tetrachloride tail gas processing system compares in prior art, and its beneficial effect lies in:
the utility model discloses a titanium tetrachloride tail gas processing system during the use, during tail gas got into neutralizer, the solution after the neutralization precipitated in the subsider. And tail gas discharged from the neutralizer enters a gas filter for filtering, and the filtered tail gas is subjected to cooling treatment through a second falling film absorber. And then, the tail gas enters a reaction tower, chlorine in the tail gas reacts with the ferrous chloride solution sprayed in the reaction tower, and the chlorine is removed. And cooling tail gas from the reaction tower through a first falling film absorber, and then entering a tail gas alkaline washing tower, wherein the tail gas reacts with acid liquor sprayed in the tail gas alkaline washing tower. And (4) conveying the tail gas from the tail gas alkali washing tower to a wire mesh demister through a tail gas fan for demisting, and then discharging the tail gas from a chimney. Compare tail gas treatment system among the prior art, the utility model discloses a tail gas treatment system can handle the multiple composition in the tail gas, and the treatment effect is better, has avoided causing the pollution to the atmosphere.
The utility model discloses an among the titanium tetrachloride tail gas processing system, tail gas gets into reaction tower before through subsiding, filtering, cooling facility, through solid impurity subsides in the reduction in temperature messenger tail gas, further reduces impurity content, improves the byproduct hydrochloric acid quality.
The utility model discloses an among the titanium tetrachloride tail gas processing system, absorb through falling liquid film absorber cooling, improved the hydrochloric acid quality, chlorine in the ferrous chloride absorption tail gas in the reactor reduces chlorine content in the tail gas.
The utility model discloses an among the titanium tetrachloride tail gas processing system, the inside downside of tail gas alkali wash tower sets up alkali lye to the second sprays the mechanism and spills the even shop of alkali lye on the packing layer, so that hydrogen chloride gas and thin alkali lye carry out abundant contact and reaction. In addition, the PH value of the alkali liquor is detected by setting a PH meter, so that the absorption rate of the hydrogen chloride is ensured.
Drawings
FIG. 1 is a schematic diagram of a titanium tetrachloride tail gas treatment system of the present invention;
in the figure: 1. a neutralizer; 2. a gas filter; 3. a settling tank; 4. a tail gas washing tower; 5. a second falling film absorber; 6. a reaction tower; 7. a first falling film absorber; 8. a tail gas alkaline washing tower; 9. a pH meter; 10. a tail gas fan; 11. a wire mesh demister; 12. and (4) a chimney.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses a titanium tetrachloride tail gas processing system's concrete embodiment, as shown in fig. 1, including neutralizer 1, subsider 3, gas filter 2, tail gas washing tower 4, first falling liquid film absorber 7, reaction tower 6, second falling liquid film absorber 5, tail gas alkali wash tower 8, tail gas fan 10, silk screen mist eliminator 11 and chimney 12.
Wherein, neutralizer 1 has air inlet, gas outlet and liquid outlet, is provided with the baffling board in neutralizer 1, and the baffling board helps making tail gas and the liquid in neutralizer 1 fully react. The liquid outlet of the neutralizer 1 is communicated with the settling tank 3, so that the tail gas and the precipitate produced by the liquid in the neutralizer 1 are completely settled. The gas outlet of neutralizer 1 is connected with the gas inlet end of gas filter 2, a filter element is arranged in gas filter 2, and when tail gas passes through gas filter 2, impurities in the tail gas are adsorbed on the filter element to remove impurities in the tail gas.
In this embodiment, the gas outlet end of the tail gas filter is connected to the gas inlet end of the tail gas water washing tower 4. The structure of the off-gas water scrubber 4 in the present embodiment is the same as that of the off-gas water scrubber 4 in the related art, and the specific structure of the off-gas water scrubber 4 will not be described here. When the tail gas enters the tail gas water washing tower 4, HCl and Cl in the tail gas2Dissolved in water to produce a hydrochloric acid solution. The tail gas is filtered by the tail gas filter before entering the tail gas washing tower 4, so that the quality of the byproduct hydrochloric acid is enhanced.
In this embodiment, the gas outlet end of the tail gas water washing tower 4 is connected with the gas inlet end of the second falling film absorber 5. The first and second slurry film absorbers in this embodiment have the same structure as the falling film absorber disclosed in the chinese utility model publication No. CN 210206426U, and the structures of the first and second falling film absorbers 7 and 5 are not described herein. The second falling film absorber 5 performs low-temperature cooling absorption on the tail gas, the gas outlet end of the second falling film absorber 5 is connected with the gas inlet end of the reaction tower 6, and the tail gas cooled and absorbed by the second falling film absorber 5 enters the reaction tower 6.
In this embodiment, the lower side inside the reaction tower 6 is provided with a ferrous chloride solution accommodating area, and the ferrous chloride solution accommodating area is provided with a ferrous chloride solution. The inside upside of reaction tower 6 has first mechanism that sprays, and first mechanism that sprays includes the circulating pump, and the feed liquor end of circulating pump passes through the ferrous chloride solution intercommunication in connecting pipe and the ferrous chloride accommodation area, and the play liquid end of circulating pump is connected with the shower nozzle through the connecting pipe, and the shower nozzle is arranged downwards. When the first spraying mechanism works, the circulating pump pumps the ferrous chloride solution in the ferrous chloride containing area to the spray head for spraying. And (3) enabling the tail gas to enter the reaction tower 6, and enabling chlorine in the tail gas to react with the ferrous chloride solution sprayed in the reaction tower 6, so that the chlorine in the tail gas is treated, and the content of the chlorine in the tail gas is reduced.
In this embodiment, the gas outlet end of the reaction tower 6 is connected to the gas inlet end of the first falling film absorber 7, and the first falling film absorber 7 absorbs and cools the tail gas. The gas outlet end of the first falling film absorber 7 is connected with the gas inlet end of the tail gas alkaline washing tower 8, the lower side of the tail gas alkaline washing tower 8 is provided with an alkali liquor containing area, and alkali liquor is contained in the alkali liquor containing area. The inside upside of tail gas caustic wash tower 8 has the second and sprays the mechanism, and the second sprays the mechanism and includes the circulating pump, and the feed liquor end of circulating pump is through the alkali liquor intercommunication in connecting pipe and the alkali liquor holding area, and the play liquid end of circulating pump is connected with the shower nozzle through the connecting pipe, and the shower nozzle is arranged downwards. When the second spraying mechanism works, the circulating pump pumps the alkali liquor in the alkali liquor containing area to the spray head for spraying. And the tail gas enters a tail gas alkali washing tower 8, and hydrogen chloride gas in the tail gas reacts with alkali liquor sprayed in the reaction tower 6, so that the hydrogen chloride in the tail gas is treated, and the content of the hydrogen chloride in the tail gas is reduced.
In order to facilitate the detection of the pH value of the alkali liquor in the tail gas alkali washing tower 8, a pH meter 9 is installed on the tail gas alkali washing tower 8, and the pH meter 9 extends into the alkali liquor containing area and is used for detecting the pH value of the alkali liquor.
In this embodiment, the gas outlet end of the tail gas caustic washing tower 8 is connected with the gas inlet end of the tail gas blower 10. The tail gas fan 10 is used for extracting tail gas, and the air outlet end of the tail gas fan 10 is connected with the wire mesh demister 11. The structure of the wire mist eliminator 11 is the same as that of the wire mist eliminator 11 in the prior art, and the description thereof is omitted. The wire mist eliminator 11 can remove the mist quickly.
In this embodiment, the air outlet end of the wire mesh demister 11 is connected to a chimney 12, and the chimney 12 discharges the tail gas into the atmosphere.
The utility model discloses a titanium tetrachloride tail gas processing system uses, and during tail gas got into neutralizer 1, the solution after the neutralization precipitated in subsider 3. And tail gas from the neutralizer 1 enters a gas filter 2 for filtering, and the filtered tail gas is subjected to cooling treatment through a second falling film absorber 5. And then, the tail gas enters a reaction tower 6, chlorine in the tail gas reacts with the ferrous chloride solution sprayed in the reaction tower 6, and the chlorine is removed. The tail gas from the reaction tower 6 is cooled by a first falling film absorber 7 and then enters a tail gas alkaline washing tower 8, and the tail gas reacts with acid liquor sprayed in the tail gas alkaline washing tower 8. And tail gas from the tail gas alkali washing tower 8 is delivered to a wire mesh demister 11 through a tail gas fan 10 for demisting, and then is discharged from a chimney 12.
The utility model provides a titanium tetrachloride tail gas processing system compares the tail gas processing system in prior art, has following advantage: the utility model discloses a tail gas treatment system can handle the multiple composition in the tail gas, and the treatment effect is better, has avoided causing the pollution to the atmosphere.
The utility model discloses an among the titanium tetrachloride tail gas processing system, tail gas gets into reaction tower 6 before through subsiding, filtering, cooling facility, through solid impurity subsides in the reduction temperature messenger tail gas, further reduces impurity content, improves the byproduct hydrochloric acid quality.
The utility model discloses an among the titanium tetrachloride tail gas processing system, absorb through falling liquid film absorber cooling, improved the hydrochloric acid quality, chlorine in the ferrous chloride absorption tail gas in the reactor reduces chlorine content in the tail gas.
The utility model discloses an among the titanium tetrachloride tail gas processing system, 8 inside downside of tail gas caustic wash tower set up alkali lye to the second sprays the even shop of mechanism with alkali lye and spills on the packing layer, so that hydrogen chloride gas and thin alkali lye carry out abundant contact and reaction. In addition, the PH value of the alkali liquor is detected by arranging a PH meter 9, so that the absorption rate of the hydrogen chloride is ensured.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. A titanium tetrachloride tail gas treatment system is characterized in that: the system comprises a neutralizer, a settling tank, a gas filter, a tail gas water washing tower, a first falling film absorber, a tail gas alkaline washing tower and a tail gas fan;
the neutralizer is provided with an air inlet, an air outlet and an air outlet, the settling tank is connected with the liquid outlet, the air inlet end of the gas filter is connected with the air outlet, the air outlet end of the gas filter is connected with the air inlet end of the tail gas washing tower, the air outlet end of the tail gas washing tower is connected with the air inlet end of the first falling film absorber, the air outlet end of the first falling film absorber is connected with the air inlet end of the tail gas alkaline washing tower, and the air outlet end of the tail gas alkaline washing tower is connected with the air inlet end of the tail gas fan.
2. The titanium tetrachloride tail gas treatment system according to claim 1, characterized in that: the tail gas processing system still includes the reaction tower, the inlet end of reaction tower with the end connection of giving vent to anger of tail gas scrubbing tower, the end of giving vent to anger of reaction tower with the inlet end of falling liquid film absorber is connected, the inside downside of reaction tower is equipped with ferrous chloride solution, the inside upside of reaction tower is equipped with the first mechanism that sprays that is used for spraying ferrous chloride solution.
3. The titanium tetrachloride tail gas treatment system according to claim 2, characterized in that: the tail gas treatment system further comprises a second falling film absorber, the gas inlet end of the second falling film absorber is connected with the gas outlet end of the tail gas water washing tower, and the gas outlet end of the second falling film absorber is connected with the gas inlet end of the reaction tower.
4. The titanium tetrachloride tail gas treatment system according to claim 1, characterized in that: the tail gas treatment system further comprises a wire mesh demister, and the air inlet end of the wire mesh demister is connected with the air outlet end of the tail gas fan.
5. The titanium tetrachloride tail gas treatment system according to claim 4, wherein: the tail gas treatment system also comprises a chimney, and the gas inlet end of the chimney is connected with the gas outlet end of the wire mesh demister.
6. The titanium tetrachloride tail gas treatment system according to claim 1, characterized in that: and alkali liquor is arranged on the lower side in the tail gas alkali washing tower, and a second spraying mechanism for spraying the alkali liquor is arranged on the upper side in the tail gas alkali washing tower.
7. The titanium tetrachloride tail gas treatment system according to claim 6, wherein: and a PH meter for detecting the PH value of the alkali liquor is arranged on the tail gas alkaline washing tower.
8. The titanium tetrachloride tail gas treatment system according to claim 1, characterized in that: a baffle plate is arranged in the neutralizer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022744493.3U CN214513725U (en) | 2020-11-24 | 2020-11-24 | Titanium tetrachloride tail gas treatment system |
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| CN202022744493.3U CN214513725U (en) | 2020-11-24 | 2020-11-24 | Titanium tetrachloride tail gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797415A (en) * | 2022-05-20 | 2022-07-29 | 攀钢集团钒钛资源股份有限公司 | Method for treating residual chlorine in chlorination tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114797415A (en) * | 2022-05-20 | 2022-07-29 | 攀钢集团钒钛资源股份有限公司 | Method for treating residual chlorine in chlorination tail gas |
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| GR01 | Patent grant | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A titanium tetrachloride tail gas treatment system Effective date of registration: 20220906 Granted publication date: 20211029 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN LONGXING TITANIUM INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2022980014572 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230829 Granted publication date: 20211029 Pledgee: Bank of China Limited by Share Ltd. Jiyuan branch Pledgor: HENAN LONGXING TITANIUM INDUSTRY TECHNOLOGY CO.,LTD. Registration number: Y2022980014572 |