CN102674447B - Method and equipment for purifying mixed gas containing chlorine - Google Patents
Method and equipment for purifying mixed gas containing chlorine Download PDFInfo
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- CN102674447B CN102674447B CN201210172698.6A CN201210172698A CN102674447B CN 102674447 B CN102674447 B CN 102674447B CN 201210172698 A CN201210172698 A CN 201210172698A CN 102674447 B CN102674447 B CN 102674447B
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Abstract
The invention discloses a method and equipment for purifying mixed gas containing chlorine, wherein the method and the equipment can effectively reduce equipment corrosion. The method comprises the steps of: firstly conducting mixed reaction on the mixed gas and chorine remover to reduce the content of chlorine in the mixed gas, and then conducting solid-gas separation on the gas obtained after reaction by using a gas filter device. The equipment for purifying mixed gas containing chlorine comprises a reaction device which is used for conducting the mixed reaction on the mixed gas and the chlorine remover to reduce the content of the chlorine in the mixed gas, and the gas filter device which is connected with the output end of the reaction device, wherein the reaction device is additionally connected with a chlorine remover feeding device. According to tests, the corrosion on the gas filter device can be obviously reduced by reducing the content of the chlorine in the mixed gas and the service life of the equipment is improved; and an anticorrosive effect is taken to parts such as pipes and containers in a system, which are in contact with the mixed gas containing chlorine with content being reduced.
Description
Technical field
The present invention relates to the method and apparatus that the mist to containing chlorine purifies.
Background technology
In order to reduce the mud of a large amount of bad processing that produce in titanic chloride production process, the application for a patent for invention file (calling reference paper in the following text) that is CN102249298A by the publication number of the application's applicant application discloses a kind of titanium tetrachloride production method.The embodiment bis-of this reference paper description has adopted following process route: first by mechanical dust collector, the furnace gas from chlorination furnace is carried out to preliminary solid and gas separation; Secondly, by film filter, the gas of preliminary solid and gas separation is carried out again to solid and gas separation; Then, the gas after solid and gas separation is again carried out condensation and obtains crude titanic chloride liquid; Finally, by cross-flow filtration device, crude titanic chloride liquid is further purified and obtains titanium tetrachloride technical grade crude product.The basic ideas of above-mentioned technique are to reduce as much as possible the dry slag content in titanium tetrachloride gases at solid and gas separation phase, thereby significantly reduce the mud amount that subsequent process generates.
Practice discovery, high temperature titanium tetrachloride gases has very strong corrosivity, can cause the very fast corrosion of equipment (especially film filter and peripheral conduits thereof).
Summary of the invention
The technical problem that first the present invention will solve is to provide and a kind ofly can effectively reduces titanium tetrachloride production method and the equipment of high temperature titanium tetrachloride gases to equipment corrosion degree.
The step that titanium tetrachloride production method of the present invention comprises is: a, by least one mechanical dust collector, the furnace gas from chlorination furnace is carried out to solid and gas separation and obtain the gas that chlorine content is higher; B, the higher gas of described chlorine content and chlorine are removed to agent hybrid reaction obtain the gas that chlorine content is lower; C, by least one gas-filtering device, the lower gas of described chlorine content is carried out to solid and gas separation and obtain the gas through preliminary purification; D, the gas through preliminary purification is carried out to condensation obtain crude titanic chloride liquid.
Must point out, above-mentioned term " higher " is only in order to represent the height relation of chlorine content in the gas of hybrid reaction front and back, therefore its implication is very clear and definite with " lower ".
Test shows, by the chlorine content reducing in high temperature titanium tetrachloride gases, can obviously reduce its corrosion to gas-filtering device, improves thus service life of equipment; The parts that the meeting gases lower with described chlorine content such as the pipeline in system, container are contacted all play etch-proof effect.
Wherein, described chlorine removes agent and adopts dry chlorine reducing agent.As preferably, it is any one or several mixture wherein in phosphorus, phosphorus trichloride, ferrous chloride that described chlorine removes agent.
Wherein, described gas-filtering device is film filter.As preferably, it is filter element that described film filter adopts FeAl, NiAl or the intermetallic compound porous film of TiAl.
Conventionally, the content from chlorine in the furnace gas of chlorination furnace is generally greater than 1wt%.The present invention preferably can be reduced to the chlorine content in hybrid reaction or the lower gas of gained chlorine content below 0.1wt%.Test shows, can significantly reduce the corrosion to filter element in gas-filtering device like this.
As preferred version, adopt phosphorus to remove agent and the higher gas hybrid reaction of described chlorine content as chlorine, the chlorine content (weight ratio) in the gas that after hybrid reaction, the chlorine content of gained is lower is below 10ppm.Test shows, the chlorine content (weight ratio) in gas is when 10ppm is following, and chlorine is at high temperature very little to the corrosiveness of filter element.
Further, titanium tetrachloride production method of the present invention also comprises step e, crude titanic chloride liquid that condensation is obtained directly refines.In the past, the crude titanic chloride liquid that condensation obtains all will could start to refine after purifying, and had plenty of the method for the precipitation of adopting, the method that some employings are filtered.Because the present invention has reduced the corrosion to the corrosion of filter element in gas-filtering device, clean-up effect while having guaranteed thus dedusting, effectively reduce the impurity content in gas, thereby can omit the measure that the refining front crude titanic chloride liquid that condensation is obtained purifies, reduce processing step.
When gas-filtering device is film filter, for preventing that face dewfall from causing film to pollute, by film filter, the lower gas of described chlorine content is carried out in the process of solid and gas separation, gas temperature being controlled at more than 300 ℃.
In addition, the gas temperature that carries out each link before condensation at the gas to through preliminary purification is all preferably not less than 150 ℃, prevents titanium tetrachloride condensation liquefaction and affects normal operating.
Titanium tetrachloride production equipment of the present invention comprises mechanical dust collector, gas-filtering device and the condensing plant connecting successively, between described mechanical dust collector and gas-filtering device, be connected with for by the reaction unit that removes agent hybrid reaction by the higher gas of the separated rear resulting chlorine content of mechanical dust collector solid and gas and chlorine, this reaction unit removes agent feeding device with chlorine and is connected.
Wherein, described gas-filtering device is film filter.
Wherein, described chlorine removes agent and adopts dry chlorine reducing agent.As preferably, it is any one or several mixture wherein in phosphorus, phosphorus trichloride, ferrous chloride that described chlorine removes agent.
As a kind of concrete scheme, described reaction unit comprises the distributor being located on mechanical dust collector gas output tube road, and this distributor removes agent input pipe by chlorine and removes agent feeding device with chlorine and be connected.
As another kind of concrete scheme, described reaction unit is to be doubled as by that a part of cavity volume that can be described as exhaust chamber on described mechanical dust collector, and this exhaust chamber removes agent input pipe by chlorine and removes agent feeding device with chlorine and be connected.
Must point out, above-mentioned term " exhaust chamber " refers to the exhaust passage being communicated with its exhaust outlet in mechanical dust collector.
As another concrete scheme, described reaction unit comprises the reactor being located between mechanical dust collector and gas-filtering device, the inlet end of described reactor is connected with gas-filtering device with mechanical dust collector respectively with exhaust end, and this reactor also removes agent input pipe by chlorine and removes agent feeding device with chlorine and be connected.
The technical problem of its less important solution of the present invention is to provide and a kind ofly can effectively reduces the titanium tetrachloride gaseous state dust collecting process of high temperature titanium tetrachloride gases to equipment corrosion degree.
This technique is first titanium tetrachloride gases and chlorine to be removed to agent hybrid reaction to reduce the chlorine content in titanium tetrachloride gases, and then by gas-filtering device, reacted gas is carried out to solid and gas separation.
Wherein, described chlorine removes agent and adopts dry chlorine reducing agent.As preferably, it is any one or several mixture wherein in phosphorus, phosphorus trichloride, ferrous chloride that described chlorine removes agent.
Wherein, described gas-filtering device is film filter.
Further, after hybrid reaction, the chlorine content in titanium tetrachloride gases is below 0.1wt%.
Wherein, preferably adopt phosphorus to remove agent as chlorine, and after hybrid reaction, the chlorine content (weight ratio) in titanium tetrachloride gases is below 10ppm.
The technical problem that the present invention finally also will solve is to provide the method and apparatus that a kind of mist to containing chlorine that can effectively reduce equipment corrosion purifies.Term " mist " refers to the gas that only contains part chlorine.
The method is first described mist and chlorine to be removed to agent hybrid reaction to reduce the chlorine content in mist, and then by gas-filtering device, reacted gas is carried out to solid and gas separation.
Wherein, described chlorine removes agent and adopts dry chlorine reducing agent.As preferably, it is any one or several mixture wherein in phosphorus, phosphorus trichloride, ferrous chloride that described chlorine removes agent.
It should be noted that, while selecting chlorine to remove agent, should consider following two principles: the first, chlorine remove agent not with mist gas in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine, thereby while preventing dechlorination, material to be recycled is produced to considerable influence; The second, chlorine remove product after agent and chlorine reaction can with separating substances to be recycled.Obviously, these two principles are applicable equally for above-mentioned titanium tetrachloride gaseous state dust collecting process.
Wherein, described gas-filtering device is film filter.
Further, after hybrid reaction, the chlorine content in mist is below 0.1wt%.
Wherein, preferably adopt phosphorus to remove agent as chlorine, and after hybrid reaction, the chlorine content (weight ratio) in mist is below 10ppm.
Further, first by least one mechanical dust collector, mist is carried out to solid and gas separation, and then mist and chlorine are removed to agent hybrid reaction.
The equipment that the mist that contains chlorine is purified, comprise that this reaction unit also removes agent feeding device with chlorine and is connected for mist and chlorine being removed to agent hybrid reaction with the reaction unit of the chlorine content of reduction mist and the gas-filtering device being connected with this reaction unit output.
Wherein, described gas-filtering device is film filter.
Wherein, described chlorine removes agent and adopts dry chlorine reducing agent.As preferably, it is any one or several mixture wherein in phosphorus, phosphorus trichloride, ferrous chloride that described chlorine removes agent.
Further, this equipment also comprises mechanical dust collector, and the output of this mechanical dust collector is connected with the input of described reaction unit.
The chlorine content reducing in mist can obviously reduce its corrosion to gas-filtering device, improves thus service life of equipment; The meetings such as the pipeline in system, container are all played to etch-proof effect with the parts that chlorine content contacts through the mist reducing.
Below in conjunction with the drawings and specific embodiments, the present invention is described further.The aspect that the application is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by the application's practice.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the application's titanium tetrachloride production equipment.
Fig. 2 is the another kind of structural representation of the application's titanium tetrachloride production equipment.
Fig. 3 is another structural representation of the application's titanium tetrachloride production equipment.
Fig. 4 is the corrosion curve of the intermetallic compound porous film of the FeAl of comparative example 1 in titanium tetrachloride gases.
Fig. 5 is the corrosion curve of the intermetallic compound porous film of the FeAl of embodiment 3 in titanium tetrachloride gases.
Fig. 6 is the corrosion curve of the intermetallic compound porous film of the FeAl of embodiment 1 in titanium tetrachloride gases.
The specific embodiment
Titanium tetrachloride production equipment shown in Fig. 1, it comprises that two mechanical dust collector 1(of series connection are as gravitational precipitator or cyclone dust collectors etc.), these two mechanical dust collectors 1 carry out preliminary solid and gas separation for the furnace gas 5 to from chlorination furnace (not shown); Film filter 2, it is connected with the output of a rear mechanical dust collector 1, it is its filter element that the intermetallic compound porous film of FeAl has been installed in this film filter 2, but also can use the metal films such as the intermetallic compound porous film of NiAl, TiAl, ceramic membrane or stainless steel membrane; Condensing plant (not shown), it is connected with the output of film filter 2; And reaction unit 3, this reaction unit 3 comprises the distributor 3a being located at respectively on two mechanical dust collectors, 1 gas output tube road, this distributor 3a removes agent input pipe by chlorine and removes agent feeding device 4 with chlorine and be connected, and this chlorine removes agent feeding device 4 and adopts one or more in phosphorus, phosphorus trichloride, ferrous chloride to remove agent 6 as chlorine.While adopting phosphorus to remove agent 6 as chlorine, chlorine removes agent feeding device 4 can adopt the structure shown in Fig. 1, comprise and melt phosphorus electric heating tank 401 and phosphorus constant speed gasification furnace 402, melt phosphorus electric heating tank 401 and be connected with phosphorus constant speed gasification furnace 402 by pipeline, phosphorus constant speed gasification furnace 402 is connected with above-mentioned distributor 3a by pipeline again.During above-mentioned titanium tetrachloride production equipment work, first furnace gas 5 enters last mechanical dust collector 1 and carries out preliminary solid and gas separation, then in last distributor 3a, remove agent 6 hybrid reactions with chlorine, after this enter in Hou Yitai mechanical dust collector 1, and then remove agent 6 hybrid reactions with chlorine in a rear distributor 3a, after reaction, enter film filter 2 and carry out again solid and gas separation, finally enter condensing plant and carry out condensation and obtain crude titanic chloride liquid.
Titanium tetrachloride production equipment as shown in Figure 2, unique difference of the titanium tetrachloride production equipment shown in it and Fig. 1 is that the structure of reaction unit 3 is different.Reaction unit 3 in Fig. 2 is to be doubled as by that a part of cavity volume that can be described as exhaust chamber 101 on described mechanical dust collector 1, and this exhaust chamber 101 removes agent input pipe 3b by chlorine and removes agent feeding device 4 with chlorine and be connected.That is to say, the titanium tetrachloride production equipment of Fig. 2 is actually mechanical dust collector 1 and reaction unit 3 is combined.When mechanical dust collector 1 adopts gravitational precipitator, described exhaust chamber 101 is exactly the chamber near the output channel place of this gravitational precipitator.
Titanium tetrachloride production equipment as shown in Figure 3, unique difference of the titanium tetrachloride production equipment shown in it and Fig. 1 is also that the structure of reaction unit 3 is different.Reaction unit 3 in Fig. 3 comprises the reactor 3c being located between mechanical dust collector 1 and film filter 2, the inlet end of described reactor 3c is connected with film filter 2 with mechanical dust collector 1 respectively with exhaust end, and this reactor 3c also removes agent input pipe by chlorine and removes agent feeding device 4 with chlorine and be connected.
For above three kinds of titanium tetrachloride production equipments, when adopting phosphorus to remove agent 6 as chlorine, chlorine free in phosphorus and gas reacts: 2P+3Cl
2=2PCl
3, generate phosphorus trichloride.This reaction is irreversible reaction, and dechlorination is thorough.Meanwhile, in system, there is the molecular balance between chlorine and metal oxide, have micro free oxygen to exist, make the phosphorus trichloride generating be further converted to more stable POCl3.
When adopting phosphorus trichloride to remove agent 6 as chlorine, chlorine free in phosphorus trichloride and gas reacts: PCl
3+ Cl
2=PCl
5, generate phosphorus pentachloride.
When adopting ferrous chloride to remove agent 6 as chlorine, chlorine free in ferrous chloride and gas reacts: 2FeCl
2+ Cl
2=2FeCl
3, generate ferric trichloride.
Phosphorus trichloride, POCl3, phosphorus pentachloride and ferric trichloride are all low boiling impurity components intrinsic in titanium tetrachloride, can in titanium tetrachloride subtractive process, remove.
It is all by reaching with chlorine generation redox reaction the object that removes chlorine that above-mentioned three kinds of chlorine remove agent 6.Therefore, also above-mentioned three kinds of chlorine can be removed to agent 6 and regard chlorine reducing agent as.
While in a word, selecting chlorine to remove agent, should consider following two principles: the first, chlorine remove that agent is not reacted with titanium tetrachloride gases or its extent of reaction far away from the extent of reaction with chlorine; The second, chlorine remove agent can be separated with titanium tetrachloride with the product after chlorine reaction.
Embodiment and comparative example (in Table 1)
Table 1
After at set intervals the film filtering element of above-mentioned comparative example 1, embodiment 3 and embodiment 1 being weighed, gained corrosion curve is referring to Fig. 4 to 6.Can find, the chlorine content in hybrid reaction or the lower gas of gained chlorine content is reduced to 0.1wt% when following, and in gas-filtering device, the extent of corrosion of filter element obviously declines; Chlorine content (weight ratio) in hybrid reaction or the lower gas of gained chlorine content is reduced to 10ppm when following, and in gas-filtering device, the corrosion rate of filter element significantly reduces.
Because the equipment corrosion problem facing in the gaseous state dust removal process at titanium tetrachloride is mainly because chlorine causes, therefore, those skilled in the art are easy to consider when the mist that contains chlorine for other purifies and also can face identical problem.Therefore, the application has reason its technical conceive to apply to the field of purification of carrying out of other mists that contain chlorine completely.Such as:
1, the purification of the furnace gas of other dchlorine metallurgy production processes
(1) furnace gas that chloridising roasting process produces: as utilize magnesium carbonate, rutile ore to produce magnesium chloride, the furnace gas producing while reclaiming the metals such as copper, lead, zinc, gold, silver from pyrite cinder;
(2) furnace gas that chlorination segregation process produces: the furnace gas producing while processing some low-grade or refractory oxidized ore with chlorination, as the processing procedure of cupric oxide ore;
(3) furnace gas that chlorination fusion process produces: the furnace gas producing when produced liquid magnesium chloride with magnesia;
(4) furnace gas that chlorination refining process produces: as the furnace gas producing while removing the impurity such as sodium in liquid crude aluminum, calcium, hydrogen, the chlorine producing while removing the impurity such as zinc in liquid lead bullion.
The purification of the furnace gas that 2, the production process such as anhydrous ferric chloride, anhydrous cupric chloride, anhydrous Aluminum chloride produces.
The purification of the tail gas that 3, thionyl chloride (thionyl chloride) production process produces.
It should be noted that, for above-mentioned these listed mists, substantially can adopt in phosphorus, phosphorus trichloride, ferrous chloride any one or wherein several mixture as chlorine, remove agent.Give an example below (in Table 2).
Table 2
The phosphorus trichloride that above-described embodiment 4,5 produces in tail gas and chlorine remove agent hybrid reaction process can reclaim completely through condensation fully, and the phosphorus trichloride content in tail gas is less than 1ppm, on not impact of tail gas safe discharge.
Claims (10)
1. pair method that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: first by mechanical dust collector (1), mist is carried out to preliminary solid and gas separation, by reaction unit (3), described mist and chlorine are removed to agent hybrid reaction to reduce the chlorine content in mist again, and then by gas-filtering device, reacted gas is carried out to solid and gas separation; Wherein, described chlorine remove agent not with mist in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) comprises the distributor (3a) being located on mechanical dust collector (1) gas output tube road, and this distributor (3a) removes agent input pipe by chlorine and removes agent feeding device (4) with described chlorine and be connected.
2. the method that the mist that contains chlorine is purified as claimed in claim 1, is characterized in that: described gas-filtering device is film filter (2).
3. pair method that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: first by mechanical dust collector (1), mist is carried out to preliminary solid and gas separation, by reaction unit (3), described mist and chlorine are removed to agent hybrid reaction to reduce the chlorine content in mist again, and then by gas-filtering device, reacted gas is carried out to solid and gas separation; Wherein, described chlorine remove agent not with mist in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) is that a part of cavity volume by the upper exhaust chamber (101) of described mechanical dust collector (1) doubles as, and this exhaust chamber (101) removes agent input pipe (3b) by chlorine and removes agent feeding device (4) with chlorine and be connected.
4. the method that the mist that contains chlorine is purified as claimed in claim 3, is characterized in that: described gas-filtering device is film filter (2).
5. pair method that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: first by mechanical dust collector (1), mist is carried out to preliminary solid and gas separation, by reaction unit (3), described mist and chlorine are removed to agent hybrid reaction to reduce the chlorine content in mist again, and then by gas-filtering device, reacted gas is carried out to solid and gas separation; Wherein, described chlorine remove agent not with mist in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) comprises the reactor (3c) being located between mechanical dust collector (1) and gas-filtering device, the inlet end of described reactor (3c) is connected with gas-filtering device with mechanical dust collector (1) respectively with exhaust end, and this reactor (3c) also removes agent input pipe by chlorine and removes agent feeding device (4) with chlorine and be connected.
6. the method that the mist that contains chlorine is purified as claimed in claim 5, is characterized in that: described gas-filtering device is film filter (2).
7. pair equipment that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: comprise to mist carry out the mechanical dust collector (1) of preliminary solid and gas separation, for mist and chlorine being removed to agent hybrid reaction to reduce the reaction unit (3) of chlorine content of mist and the gas-filtering device being connected with this reaction unit (3) output, this reaction unit also removes agent feeding device (4) with chlorine and is connected; Wherein, described chlorine remove agent not with mist gas in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) comprises the distributor (3a) being located on mechanical dust collector (1) gas output tube road, and this distributor (3a) removes agent input pipe by chlorine and removes agent feeding device (4) with described chlorine and be connected.
8. the equipment that the mist that contains chlorine is purified as claimed in claim 7, is characterized in that: described gas-filtering device is film filter (2).
9. pair equipment that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: comprise to mist carry out the mechanical dust collector (1) of preliminary solid and gas separation, for mist and chlorine being removed to agent hybrid reaction to reduce the reaction unit (3) of chlorine content of mist and the gas-filtering device being connected with this reaction unit (3) output, this reaction unit also removes agent feeding device (4) with chlorine and is connected; Wherein, described chlorine remove agent not with mist gas in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) is that a part of cavity volume by the upper exhaust chamber (101) of described mechanical dust collector (1) doubles as, and this exhaust chamber (101) removes agent input pipe (3b) by chlorine and removes agent feeding device (4) with chlorine and be connected.
10. pair equipment that the mist that contains chlorine purifies, be used for the purification of the furnace gas of dchlorine metallurgy production process, it is characterized in that: comprise to mist carry out the mechanical dust collector (1) of preliminary solid and gas separation, for mist and chlorine being removed to agent hybrid reaction to reduce the reaction unit (3) of chlorine content of mist and the gas-filtering device being connected with this reaction unit (3) output, this reaction unit also removes agent feeding device (4) with chlorine and is connected; Wherein, described chlorine remove agent not with mist gas in material to be recycled react or its extent of reaction far away from the extent of reaction with chlorine; Chlorine remove product after agent and chlorine reaction can with separating substances to be recycled; Described chlorine removes agent and specifically adopts phosphorus and remove agent feeding device (4) supply by chlorine, chlorine content (weight ratio) after hybrid reaction in mist is below 10ppm, this chlorine removes agent feeding device (4) and comprises and melt phosphorus electric heating tank (401) and phosphorus constant speed gasification furnace (402), melt phosphorus electric heating tank (401) and be connected with phosphorus constant speed gasification furnace (402) by pipeline, phosphorus constant speed gasification furnace (402) is connected with reaction unit (3) by pipeline again; Described reaction unit (3) comprises the reactor (3c) being located between mechanical dust collector (1) and gas-filtering device, the inlet end of described reactor (3c) is connected with gas-filtering device with mechanical dust collector (1) respectively with exhaust end, and this reactor (3c) also removes agent input pipe by chlorine and removes agent feeding device (4) with chlorine and be connected.
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|---|---|---|---|
| CN201210172698.6A CN102674447B (en) | 2012-05-30 | 2012-05-30 | Method and equipment for purifying mixed gas containing chlorine |
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|---|---|---|---|
| CN201210172698.6A CN102674447B (en) | 2012-05-30 | 2012-05-30 | Method and equipment for purifying mixed gas containing chlorine |
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| CN102674447B true CN102674447B (en) | 2014-11-05 |
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