CN107261758A - Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride - Google Patents
Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride Download PDFInfo
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- CN107261758A CN107261758A CN201710518462.6A CN201710518462A CN107261758A CN 107261758 A CN107261758 A CN 107261758A CN 201710518462 A CN201710518462 A CN 201710518462A CN 107261758 A CN107261758 A CN 107261758A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1412—Controlling the absorption process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
Abstract
Zirconium oxychloride vent gas treatment field is prepared the present invention relates to fluidizing chlorination method, more particularly to fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride.A kind of fluidizing chlorination method prepares the exhaust gas treating method of zirconium oxychloride, comprises the following steps：Respectively liquid absorbent medium is passed through into the falling-film absorber and the packed absorber；And the tail gas containing hydrogen chloride is first passed through falling-film absorber, residual exhaust is passed through in packed absorber along tail gas transfer tube, then carries out chlorine hydride gas concentration detection, tail gas is discharged.The beneficial effects of the present invention are：Carry out absorbing hydrogen chloride gas using watery hydrochloric acid or water, most chlorine conversion is hydrochloric acid at last, avoid during vent gas treatment using alkali lye and generation liquor natrii hypochloritis, reduce the cost and difficulty of vent gas treatment, and do not influenceed by the other components in tail gas, the problem of avoiding excess processes in existing process, cost-effective solution problems of the prior art.
Description
Technical field
Zirconium oxychloride vent gas treatment field is prepared the present invention relates to fluidizing chlorination method, more particularly to fluidizing chlorination method prepares oxygen
The exhaust gas treating method and processing system of zirconium chloride.
Background technology
Fluidizing chlorination method zirconium oxychloride needs chlorine, zircon sand (zirconium silicate), petroleum coke, metallic silicon (or carborundum or two
Person's mixture) it is raw material, reacted in chlorination furnace under the conditions of 900 DEG C -1200 DEG C, generation zirconium chloride and silicon tetrachloride,
Silicon tetrachloride is purified as byproduct, and zirconium chloride generates zirconium oxychloride and hydrochloric acid with water reaction again.
Contain a small amount of chlorine and substantial amounts of carbon monoxide in tail gas, when temperature is reduced, easily occur chemical reaction generation
Phosgene, phosgene is a kind of extremely toxic substance, is made troubles to subsequent treatment.Even if control condition makes the two not react, also must
Alkali liquor absorption chlorine must be used, so that by the use of carbon monoxide as fuel or the raw materials for production of other products, this will also result in place
Manage the problem of cost is high.In addition, alkali lye can not optionally absorb chlorine in equipment running process, it is to carbon dioxide
Absorbing reaction is also carried out simultaneously, and the carbon dioxide content in tail gas is usually more than 5 times of chlorine content, therefore, in order to inhale
Receive chlorine, it is necessary to can just be completely absorbed chlorine using more than 6 times of required alkali lye, this aspect increases the consumption of alkali lye
Amount, on the other hand also makes liquor natrii hypochloritis's available chlorine content of generation relatively low, it is impossible to reach the national standard requirement of correlation.And
The content of carbon dioxide does not have too many influence to the tail gas after processing, the concentration of carbon monoxide is only reduction of, in conduct
It is that it is the excess processes to tail gas to remove carbon dioxide, both adds cost, does not have again It is not necessary to remove in the case of fuel
There is obvious beneficial effect.
The content of the invention
It is an object of the invention to provide the exhaust treatment system and method that a kind of fluidizing chlorination method prepares zirconium oxychloride, use
In front end hydrogenation pretreating process tail gas, it is hydrogen chloride to make chlorine conversion, and watery hydrochloric acid or water are used during vent gas treatment
Carry out absorbing hydrogen chloride gas, most chlorine conversion is that hydrochloric acid is handled at last, it is to avoid during vent gas treatment using alkali lye and
Liquor natrii hypochloritis is produced, the cost and difficulty of vent gas treatment is reduced, and do not influenceed by the other components in tail gas, it is to avoid
In existing process the problem of excess processes, cost-effective solution problems of the prior art.
Concrete technical scheme of the present invention is as follows：
A kind of fluidizing chlorination method prepares the exhaust gas treating method of zirconium oxychloride, comprises the following steps：
Respectively liquid absorbent medium is passed through into the falling-film absorber and the packed absorber；And hydrogen chloride will be contained
Tail gas be first passed through falling-film absorber, liquid absorbent medium carries out first time absorption processing to the hydrogen chloride gas in tail gas；
Partial oxidation hydrogen after first time absorption processing in tail gas is discharged with liquid absorbent medium, and residual exhaust is along tail
Gas transfer tube is passed through in packed absorber, and second of absorption processing is carried out to the hydrogen chloride gas in tail gas；
Remaining hydrogen chloride gas is discharged with liquid absorbent medium in tail gas after second of absorption processing, and residual exhaust enters
Row chlorine hydride gas concentration is detected；
When detectable concentration reaches discharge standard, tail gas is discharged；
When detectable concentration is not up to discharge standard, tail gas is passed through recovery tube, tail gas is back to the tail gas transmission
Pipe carries out absorption again and handled, until hydrogen chloride in tail gas gas detectable concentration reaches discharge standard, tail gas is discharged.
Further, tail gas is passed through before falling-film absorber, in addition to hydrogen is passed through into tail gas and pre-processed, made
It is converted into hydrogen chloride gas with chlorine reaction.
Further, the liquid absorbent medium in the falling-film absorber is 3~21% (w/w) watery hydrochloric acid or water；It is described
Watery hydrochloric acid or water that liquid absorbent medium in packed absorber is 3~10% (w/w).
Further, a kind of fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, for realizing fluidizing chlorination method
The exhaust gas treating method of zirconium oxychloride is prepared, including：Falling-film absorber and the falling film absorption is connected to by tail gas transfer tube
The packed absorber of device；The top tower wall of the packed absorber is provided with tail gas escape pipe；The tail gas transfer tube and described
Also it is communicated between tail gas escape pipe on recovery tube, the recovery tube and blower fan is installed, the recovery tube and the tail gas transfer tube
Junction is provided with recovery valve, and the recovery tube is provided with path switching motor-driven valve with the tail gas escape pipe junction；It is described
HCl gas concentration detector is installed in tail gas escape pipe；The recovery valve, the blower fan, the path switching motor-driven valve and
The HCl gas concentration detector is electrically connected to controller.
Further, the fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride also including first circulation reception dress
Put and second circulation reception device；The first circulation reception device goes out including being connected to first feed tube and described first
First receiving tank of liquid pipe, is arranged at the first circulation pump on first feed tube；The second circulation reception device includes
The second receiving tank of second feed tube and second drain pipe is connected to, second on second feed tube is arranged at
Circulating pump.
Further, the fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, in addition to is arranged at described
The first liquid flowing valve on one feed tube, first flowmeter；It is arranged at the second liquid flowing valve, the second of second feed tube
Gauge；It is arranged at the air intake valve in the tail gas air inlet pipe；It is respectively arranged at entering water electromagnetic valve, the water outlet of the cooling pipe
Magnetic valve and the temperature sensor being arranged in the cooling section, first liquid flowing valve, the first flowmeter, described the
Two liquid flowing valves, the second flowmeter, the air intake valve, the entering water electromagnetic valve, the water solenoid valve and the temperature
Degree sensor is electrically connected to the controller.
Further, concentration of hydrochloric acid detector is additionally provided with first receiving tank and second receiving tank, it is described
First circulation pump, the second circulation pump and the concentration of hydrochloric acid detector are electrically connected to the controller.
Further, second feed tube is also equipped with spray head positioned at one end of the packed absorber.
Further, it is additionally provided with sewage draining exit on the housing wall of the cooling section.
Further, first receiving tank and second receiving tank are made by polypropylene material.
The present invention compared with prior art, has the advantages that：
(1) tail gas that the present invention prepares zirconium oxychloride using two grades of absorption patterns to fluidizing chlorination method is handled, and is used
Watery hydrochloric acid or water carry out absorbing hydrogen chloride gas, and most chlorine conversion is that hydrochloric acid is handled at last, it is to avoid during vent gas treatment
Using alkali lye and generation liquor natrii hypochloritis, the cost and difficulty of vent gas treatment are reduced, specifically, using falling-film absorber
First absorbed, then not absorbing thoroughly hydrogen chloride to falling-film absorber using packed tower further absorbs, it is to avoid former
The chlorine contained in tail gas and the hydrogen chloride gas with severe corrosive are discharged into air, cause air pollution；And the method
Do not influenceed by the other components in tail gas, the problem of it also avoid excess processes in existing process.
(2) fluidizing chlorination method of the present invention prepares the exhaust treatment system of zirconium oxychloride, can be in emission
Hydrogen chloride gas carry out self-inspection, when detectable concentration reaches discharge standard, tail gas is discharged；When detectable concentration is not up to discharge
During standard, tail gas is passed through recovery tube, blower fan makes tail gas opposite direction in recovery tube flow to the tail gas transfer tube, carries out again
Secondary absorption processing, until hydrogen chloride in tail gas gas detectable concentration reaches discharge standard, tail gas is discharged；Thoroughly remove mixing tail
Hydrogen chloride gas in gas, is prevented effectively from the discharge of hydrogen chloride gas.
(3) fluidizing chlorination method of the present invention prepares the exhaust treatment system of zirconium oxychloride, the concentration of hydrochloric acid detection
Device is used to detect the concentration of hydrochloric acid in first receiving tank and second receiving tank, and transmits signals to described
Controller, when the concentration of hydrochloric acid is higher than concentration range, the controller controls the exhaust treatment system to be stopped, together
When, first receiving tank and second receiving tank can be collected to watery hydrochloric acid, so as to handle tail gas while,
Produce watery hydrochloric acid.The setting of controller and other electronic components, also in order to which operating personnel are monitored to tail gas treatment process,
According to different disposition adjustment work states, automaticity is high, time saving and energy saving.
(4) hydrogen chloride gas is soluble in water, and hydrogen chloride gas is contacted with water or watery hydrochloric acid, produces hydrochloric acid or concentration is higher
Hydrochloric acid, it is higher into initial temperature during absorber, and hydrogen chloride gas is dissolved in the mistake that liquid absorbent medium is a heat release
Journey, and the solubility of hydrogen chloride is declined with the rise of temperature, so, in order to ensure certain absorption efficiency, it is necessary to
Hydrogen chloride heat of solution is taken away by cooling water in time.Bottom cooling pipe in cooling section as the cooling water inlet pipe,
Upper opening pipeline is used as the cooling water outlet pipe；Beneficial effect is that cooling water flows automatically in cyclic process meeting heat
Toward top, cooling effect of maximum is reached with this.
(5) fluidizing chlorination method of the present invention prepares the exhaust treatment system of zirconium oxychloride, simple in construction, unit heat exchange
The low cost of area, fluid resistance is small；Operating flexibility is big, mass transfer area is big, and oxygen chlorine is prepared more suitable for absorbing fluidizing chlorination method
Change the low concentration hydrogen chloride in the tail gas of zirconium.
Brief description of the drawings
Fig. 1 is the exhaust treatment system structural representation that fluidizing chlorination method described in the embodiment of the present invention 1 prepares zirconium oxychloride；
Fig. 2 is the electrical part electricity for the exhaust treatment system that fluidizing chlorination method described in the embodiment of the present invention 1 prepares zirconium oxychloride
Road connects block diagram；
Fig. 3 is the exhaust treatment system structural representation that fluidizing chlorination method described in the embodiment of the present invention 2 prepares zirconium oxychloride；
Fig. 4 is the electrical part electricity for the exhaust treatment system that fluidizing chlorination method described in the embodiment of the present invention 2 prepares zirconium oxychloride
Road connects block diagram.
Embodiment
The embodiment of the present invention is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Embodiment 1
A kind of fluidizing chlorination method prepares the exhaust gas treating method of zirconium oxychloride, comprises the following steps：
Respectively liquid absorbent medium is passed through into the falling-film absorber and the packed absorber；And hydrogen chloride will be contained
Tail gas be first passed through falling-film absorber, liquid absorbent medium carries out first time absorption processing to the hydrogen chloride gas in tail gas；
Partial oxidation hydrogen after first time absorption processing in tail gas is discharged with liquid absorbent medium, and residual exhaust is along tail
Gas transfer tube is passed through in packed absorber, and second of absorption processing is carried out to the hydrogen chloride gas in tail gas；
Remaining hydrogen chloride gas is discharged with liquid absorbent medium in tail gas after second of absorption processing, and residual exhaust enters
Row chlorine hydride gas concentration is detected；
When detectable concentration reaches discharge standard, tail gas is discharged；
When detectable concentration is not up to discharge standard, tail gas is passed through recovery tube, tail gas is back to the tail gas transmission
Pipe carries out absorption again and handled, until hydrogen chloride in tail gas gas detectable concentration reaches discharge standard, tail gas is discharged.
Described in the present embodiment, fluidizing chlorination method prepare zirconium oxychloride need chlorine, zircon sand (zirconium silicate), petroleum coke,
Metallic silicon (or carborundum or the two mixture) is raw material, is reacted in chlorination furnace under the conditions of 900 DEG C -1200 DEG C, is generated
Zirconium chloride and silicon tetrachloride, silicon tetrachloride are purified as byproduct, zirconium chloride again with water reaction generation zirconium oxychloride and
Hydrochloric acid；
Impurity component in raw material is converted into corresponding chloride, such as：Titanium dioxide impurity is converted into titanium tetrachloride, oxygen
Change iron and be converted into iron chloride.Therefore, zirconium chloride, silicon tetrachloride, four are contained from the process gas mixture that chlorination furnace comes out
Titanium chloride, ferric trichloride, carbon monoxide, carbon dioxide, also containing the complete raw materials for production of unreacted such as：Chlorine, zircon sand (silicon
Sour zirconium), petroleum coke, metallic silicon (or carborundum or the two have)；
Prepared in fluidizing chlorination method in the techniques such as cooling, the rectifying of zirconium oxychloride, eliminate wherein contain zirconium chloride,
The products such as titanium tetrachloride, silicon tetrachloride and byproduct components, remaining composition have：Carbon monoxide, carbon dioxide, chlorine, hydrogen.
Chlorine is a kind of toxic gas, and it mainly invades human body by respiratory tract and is dissolved in the moisture contained by mucous membrane,
Hypochlorous acid and hydrochloric acid are generated, harmful influence is caused to upper respiratory tract mucous membrane：Hypochlorous acid makes tissue by strong oxidation；Hydrochloric acid
Stimulate mucous membrane to occur inflammatory swelling, make respiratory mucosa edema, largely secrete mucus, cause expiratory dyspnea.
Described in the present embodiment, when above-mentioned mixture temperature is reduced to 300~700 DEG C being passed through hydrogen is pre-processed,
It is preferred that, the temperature for being passed through hydrogen is 500~600 DEG C, and now, hydrogen is spontaneous at high temperature to react with chlorine.Hydrogen leads to
Chang Dangliang or excessive is passed through, to ensure that chlorine reacts completely；
Described in the present embodiment, through the pretreated tail gas of high-temperature hydrogen, including composition have：Carbon monoxide, titanium dioxide
Carbon, hydrogen chloride and hydrogen, wherein, hydrogen chloride gas has severe corrosive, and air pollution can be caused by being discharged into air, need to be by it
Removed from above-mentioned mixed gas；
The content of carbon dioxide does not have too many influence to the tail gas after processing, and remaining hydrogen is mixed with carbon monoxide
Fuel or other raw materials technologies can be used as together.So using alkali lye and production during avoiding prior art vent gas treatment
Raw liquor natrii hypochloritis, reduces the cost and difficulty of vent gas treatment, and is not influenceed by the other components in tail gas, it also avoid
In existing process the problem of excess processes.
Described in the present embodiment, the liquid absorbent medium in falling-film absorber is 3~21% (w/w) watery hydrochloric acid or water；It is excellent
Choosing, using 6~15% (w/w) watery hydrochloric acid；More preferred, 8~10% (w/w) watery hydrochloric acid；
Watery hydrochloric acid or water that liquid absorbent medium in the packed absorber is 3~10% (w/w)；It is preferred that, using 3
~5% (w/w) watery hydrochloric acid.
As shown in Figure 1, 2, described in the present embodiment, a kind of fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride,
For realizing that fluidizing chlorination method prepares the exhaust gas treating method of zirconium oxychloride, including：
Falling-film absorber 1 and the packed absorber 2 that the falling-film absorber is connected to by tail gas transfer tube 501；
The falling-film absorber from top to bottom includes liquid cloth film section 3, cooling section 4 and gas-liquid segregation section 5；
The housing wall of the liquid cloth film section is provided with the feed tube 302 of tail gas air inlet pipe 301 and first；
The housing wall of the cooling section includes two cooling pipes, and one of them is arranged on bottom, and another is arranged on
Portion, the cooling section is internally provided with tubulation 401；
Described in the present embodiment, it is preferred that bottom cooling pipe is used as the cooling water inlet pipe 402, upper opening pipe
Road is used as the cooling water outlet pipe 403；Beneficial effect is that cooling water flows to top automatically in cyclic process meeting heat,
Cooling effect of maximum is reached with this；
The housing wall of the gas-liquid separation section includes the drain pipe 502 of tail gas transfer tube 501 and first；The packed absorber
Top tower wall be provided with the second feed tube 201 and tail gas escape pipe 202；Between the tail gas transfer tube and the tail gas escape pipe
Also it is communicated with recovery tube 203, the recovery tube and blower fan 204 is installed, the recovery tube and the tail gas transfer tube junction
Recovery valve 205 is installed, the recovery tube is provided with path switching motor-driven valve 206 with the tail gas escape pipe junction；It is described
HCl gas concentration detector 207 is installed in tail gas escape pipe；The recovery valve, the blower fan, path switching are electronic
Valve and the HCl gas concentration detector are electrically connected to controller；It is additionally provided with the bottom tower wall of the packed absorber
Second drain pipe 208.
Described in the present embodiment, recovery valve is illustrated by taking SMC brand VFS5110-4EB-06 type magnetic valves as an example；
Described in the present embodiment, path switches motor-driven valve with three two of MINDMAN brand MVSP-180-3E1-NC models
It is illustrated exemplified by port valve；
Described in the present embodiment, HCl gas concentration detector is lifted by taking the gas detector of RBT-6000 models as an example
Example explanation；
Described in the present embodiment, controller uses Siemens's 6ES7 315-2AG10-0AB0 control systems；
Described in the present embodiment, packed absorber is internally provided with filler；It is preferred that, the filling of the packed absorber
Thing is graphite；
Described in the present embodiment, the tower body of packed tower outside PVC-U using fiberglass is twined, due to hydrogen chloride in tail gas
Content is less, absorbs temperature slightly lower, it is to avoid produce thermal deformation.
Described in the present embodiment, one end that the second feed tube is located at the packed absorber is also equipped with spray head 209, institute
Stating spray head is used to make liquid absorbent medium being evenly distributed in packed absorber, makes tail gas and liquid absorbent medium sufficient
Contact.
Described in the present embodiment, sewage draining exit 404 is additionally provided with the housing wall of cooling section, in order that inspected periodically after and
Blowdown.
Described in the present embodiment, the cooling medium being passed through in water cooled pipeline is 5~20 DEG C of water, for effectively reducing described
Temperature in tubulation.
Hydrogen chloride gas is soluble in water, and hydrogen chloride gas is contacted with water or watery hydrochloric acid, produces hydrochloric acid or the higher salt of concentration
Acid, it is higher into initial temperature during absorber, and hydrogen chloride gas is dissolved in the process that liquid absorbent medium is a heat release,
And the solubility of hydrogen chloride is declined with the rise of temperature, so, in order to ensure certain absorption efficiency, it is necessary in time
Hydrogen chloride heat of solution is taken away by cooling water.
Described in the present embodiment, first receiving tank and second receiving tank are made by polypropylene material.
Described in the present embodiment, tubulation is made of graphite modified polypropylene material.
Described in the present embodiment, fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, during work, and liquid absorbent is situated between
Matter is from first feed tube enters to the falling-film absorber, by filming device vertically along tubulation inwall with filminess
Decline；Be passed through after hydrogen chloride gas, the film of gas and flowing carries out current contacting and absorbs heat release, tubulation it is outer by cooling water come
The heat produced in cooling absorption process so that hydrogen chloride gas is more dissolved in the liquid absorbent medium；Absorb
The liquid absorbent medium of hydrogen chloride gas flows out from first drain pipe, and remaining mixed gas is entered by the tail gas transfer tube
Enter to the packed absorber；The packed absorber increases the contact surface of liquid absorbent medium and tail gas using filler therein
Hold-down grid is installed in product, the top of the filler, is blown to prevent being raised air-flow.Liquid from tower top through liquid distribution trough spray to
On filler, and flowed down along filler surface.Gas is sent into from bottom of towe, is continued through the space of packing layer in adverse current with liquid, is being filled out
Expect on surface, gas-liquid two-phase close contact carries out mass transfer, is further absorbed to not absorbing thoroughly hydrogen chloride gas.
Liquid after double absorption is discharged by the tail gas escape pipe, the hydrogen chloride gas in the tail gas escape pipe
Bulk concentration detector is detected to the concentration of hydrogen chloride gas in mixed gas, when detectable concentration reaches discharge standard, institute
Recovery valve closing is stated, path switching motor-driven valve opens tail gas escape pipe, closes recovery tube, by tail gas from the tail gas outlet
Discharged in pipe；
When detectable concentration is not up to discharge standard, the recovery valve is opened, and the path switching motor-driven valve, which is opened, to be reclaimed
Pipe and blower fan, close tail gas escape pipe, tail gas are passed through into recovery tube, and arrow shown in Fig. 1 is the flow direction of now tail gas, institute
Stating blower fan makes tail gas opposite direction in recovery tube flow to the tail gas transfer tube, carries out absorption again and handles, until in tail gas
Hydrogen chloride gas detectable concentration reaches discharge standard, closes recovery tube and blower fan, tail gas is discharged from the tail gas escape pipe.
Remaining tail gas includes carbon dioxide, carbon monoxide and hydrogen, and the content of carbon dioxide is to the tail gas after processing
Not too many influence, and remaining hydrogen is mixed after may be processed with carbon monoxide as fuel or other techniques
Raw material.Alkali lye is used during avoiding prior art vent gas treatment and liquor natrii hypochloritis is produced, vent gas treatment is reduced
Cost and difficulty, and do not influenceed by the other components in tail gas, the problem of it also avoid excess processes in existing process.
Embodiment 2
The present embodiment is improved on the basis of embodiment 1, and the content described in embodiment 1 is also the present embodiment institute
Have, no longer specifically repeat herein.
As shown in Figure 3,4, described in the present embodiment, the exhaust treatment system that fluidizing chlorination method prepares zirconium oxychloride also includes
First circulation reception device 6 and second circulation reception device 7；The first circulation reception device is entered including being connected to described first
First receiving tank 601 of liquid pipe and first drain pipe, is arranged at the first circulation pump 602 on first feed tube；Institute
The second receiving tank 701 that second circulation reception device includes being connected to second feed tube and second drain pipe is stated, if
The second circulation pump 702 being placed on second feed tube.
Described in the present embodiment, fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, in addition to is arranged at described
The first liquid flowing valve 303 on first feed tube, first flowmeter 304；It is arranged at the second liquid feed valve of second feed tube
Door 305, second flowmeter 306；It is arranged at the air intake valve 307 in the tail gas air inlet pipe；It is respectively arranged at the cooling tube
Entering water electromagnetic valve 405, water solenoid valve 406 and the temperature sensor 407 being arranged in the cooling section in road, described first enters
Fluid valve, the first flowmeter, second liquid flowing valve, the second flowmeter, the air intake valve, it is described enter water power
Magnet valve, the water solenoid valve and the temperature sensor are electrically connected to controller.
Described in the present embodiment, first flowmeter, second flowmeter are lifted by taking sinomeasure brand flowmeters as an example
Example explanation；
Described in the present embodiment, the first liquid flowing valve, the second liquid flowing valve are with SMC brand VFS5110-4EB-06 type electromagnetism
It is illustrated exemplified by valve；
Described in the present embodiment, temperature sensor is illustrated by taking WRP-130 models as an example；
Described in the present embodiment, concentration of hydrochloric acid detector 8, institute are additionally provided with the first receiving tank and second receiving tank
State first circulation pump, the second circulation pump and the concentration of hydrochloric acid detector and be electrically connected to the controller.
Described in the present embodiment, concentration of hydrochloric acid sensor is carried out by taking ST-1000 model liquid on-line concentration detectors as an example
Illustrate；
Described in the present embodiment, fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, during work, and liquid absorbent is situated between
Matter is from first feed tube enters to the falling-film absorber, by filming device vertically along tubulation inwall with filminess
Decline；Be passed through after hydrogen chloride gas, the film of gas and flowing carries out current contacting and absorbs heat release, tubulation it is outer by cooling water come
The heat produced in cooling absorption process；The temperature sensor is used to carry out thermometric, coolant water temperature to the liquid in cooling section
When spending high, the controller is transmitted signals to, the controller controls the entering water electromagnetic valve and the water solenoid valve,
With increased water flow amount, reduce temperature, so that hydrogen chloride gas is more dissolved in the liquid absorbent medium；
The liquid absorbent medium for absorbing hydrogen chloride gas flows out from first drain pipe, flows into described first and receives
Tank, the liquid cloth film section is pumped to by the first circulation pump by the liquid absorbent medium in first receiving tank, real
Show recycling for liquid absorbent medium；The first flowmeter be used for it is described enter flow quantity be monitored, and signal is passed
The controller is delivered to, the controller transmits signals to first liquid flowing valve, and first liquid flowing valve is used to control
Make the flow velocity of the liquid absorbent medium；
The remaining mixed gas enters to the packed absorber by the tail gas transfer tube；The packed absorber
Increase the contact area of liquid absorbent medium and tail gas using filler therein, hold-down grid is installed in the top of the filler, with
Prevent that being raised air-flow blows.Liquid is sprayed onto filler from tower top through liquid distribution trough, and is flowed down along filler surface.Gas is from tower
Bottom is sent into, and continues through the space of packing layer in adverse current with liquid, on filler surface, gas-liquid two-phase close contact is passed
Matter, further absorbs to not absorbing thoroughly hydrogen chloride gas；
The liquid absorbent medium for absorbing hydrogen chloride gas flows out from second drain pipe, flows into described second and receives
Tank, the liquid cloth film section is pumped to by the second circulation pump by the liquid absorbent medium in second receiving tank, real
Show recycling for liquid absorbent medium；The second flowmeter be used for it is described enter flow quantity be monitored, and signal is passed
The controller is delivered to, the controller transmits signals to second liquid flowing valve, and second liquid flowing valve is used to control
Make the flow velocity of the liquid absorbent medium；
The concentration of hydrochloric acid detector is used to enter the concentration of hydrochloric acid in first receiving tank and second receiving tank
Row detection, and the controller is transmitted signals to, when the concentration of hydrochloric acid is higher than concentration range, the controller controls institute
Exhaust treatment system is stated to be stopped, meanwhile, first receiving tank and second receiving tank can be collected to watery hydrochloric acid,
So as to while tail gas is handled, produce watery hydrochloric acid.
Liquid after double absorption is discharged by the tail gas escape pipe, the hydrochloric acid in the tail gas escape pipe
Gas concentration detector is detected to the concentration of hydrogen chloride gas in mixed gas, when detectable concentration reaches discharge standard,
The recovery valve is closed, and the path switching motor-driven valve opens tail gas escape pipe, closes recovery tube, tail gas is discharged；
When detectable concentration is not up to discharge standard, the recovery valve is opened, and the path switching motor-driven valve, which is opened, to be reclaimed
Pipe, closes tail gas escape pipe, tail gas is passed through into recovery tube, tail gas is back to the tail gas transfer tube and carries out at absorption again
Reason, until hydrogen chloride in tail gas gas detectable concentration reaches discharge standard, tail gas is discharged.
Remaining tail gas includes carbon dioxide, carbon monoxide in hydrogen, and the content of carbon dioxide is to the tail gas after processing
Not too many influence, and remaining hydrogen is mixed after may be processed with carbon monoxide as fuel or other techniques
Raw material.Alkali lye is used during avoiding prior art vent gas treatment and liquor natrii hypochloritis is produced, vent gas treatment is reduced
Cost and difficulty, and do not influenceed by the other components in tail gas, the problem of it also avoid excess processes in existing process.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of fluidizing chlorination method prepares the exhaust gas treating method of zirconium oxychloride, it is characterised in that comprise the following steps：
Respectively liquid absorbent medium is passed through into the falling-film absorber and the packed absorber；And by the tail containing hydrogen chloride
Gas is first passed through falling-film absorber, and liquid absorbent medium carries out first time absorption processing to the hydrogen chloride gas in tail gas；
Partial oxidation hydrogen after first time absorption processing in tail gas is discharged with liquid absorbent medium, and residual exhaust is passed along tail gas
Defeated pipe is passed through in packed absorber, and second of absorption processing is carried out to the hydrogen chloride gas in tail gas；
Remaining hydrogen chloride gas is discharged with liquid absorbent medium in tail gas after second of absorption processing, and residual exhaust carries out chlorine
Change hydrogen gas concentration detection；
When detectable concentration reaches discharge standard, tail gas is discharged；
When detectable concentration is not up to discharge standard, tail gas is passed through recovery tube, tail gas is back to the tail gas transfer tube and enters
Absorption is handled row again, until hydrogen chloride in tail gas gas detectable concentration reaches discharge standard, tail gas is discharged.
2. fluidizing chlorination method as claimed in claim 1 prepares the exhaust gas treating method of zirconium oxychloride, it is characterised in that by tail gas
It is passed through before falling-film absorber, in addition to hydrogen is passed through into tail gas and pre-processed, it is converted into chlorination with chlorine reaction
Hydrogen.
3. fluidizing chlorination method as claimed in claim 2 prepares the exhaust gas treating method of zirconium oxychloride, it is characterised in that the drop
Liquid absorbent medium in film absorber is 3~21% (w/w) watery hydrochloric acid or water；Liquid absorbent in the packed absorber is situated between
Matter is 3~10% (w/w) watery hydrochloric acid or water.
4. a kind of fluidizing chlorination method prepares the exhaust treatment system of zirconium oxychloride, it is characterised in that for realizing any one of 1-3 institutes
The fluidizing chlorination method stated prepares the exhaust gas treating method of zirconium oxychloride, and it includes：Falling-film absorber and connected by tail gas transfer tube
It is connected to the packed absorber of the falling-film absorber；The top tower wall of the packed absorber is provided with tail gas escape pipe；It is described
Also it is communicated between tail gas transfer tube and the tail gas escape pipe on recovery tube, the recovery tube and blower fan is installed, the recovery tube
Recovery valve is installed with the tail gas transfer tube junction, the recovery tube is provided with path with the tail gas escape pipe junction
Switch motor-driven valve；HCl gas concentration detector is installed in the tail gas escape pipe；It is the recovery valve, the blower fan, described
Path switches motor-driven valve and the HCl gas concentration detector is electrically connected to controller.
5. exhaust treatment system as claimed in claim 4, it is characterised in that the fluidizing chlorination method prepares the tail of zirconium oxychloride
Gas processing system also includes first circulation reception device and second circulation reception device；The first circulation reception device includes connecting
The first receiving tank of first feed tube and first drain pipe is connected to, first be arranged on first feed tube follows
Ring pump；The second circulation reception device includes being connected to the second reception of second feed tube and second drain pipe
Tank, is arranged at the second circulation pump on second feed tube.
6. exhaust treatment system as claimed in claim 5, it is characterised in that the fluidizing chlorination method prepares the tail of zirconium oxychloride
Gas processing system, in addition to be arranged on first feed tube the first liquid flowing valve, first flowmeter；It is arranged at described
Second liquid flowing valve of two feed tubes, second flowmeter；It is arranged at the air intake valve in the tail gas air inlet pipe；It is respectively arranged at
Entering water electromagnetic valve, water solenoid valve and the temperature sensor being arranged in the cooling section of the cooling pipe, described first
Liquid flowing valve, the first flowmeter, second liquid flowing valve, the second flowmeter, the air intake valve, the water inlet
Magnetic valve, the water solenoid valve and the temperature sensor are electrically connected to the controller.
7. exhaust treatment system as claimed in claim 6, it is characterised in that first receiving tank and second receiving tank
Concentration of hydrochloric acid detector is inside additionally provided with, the first circulation pump, the second circulation pump and the concentration of hydrochloric acid detector are equal
It is electrically connected to the controller.
8. exhaust treatment system as claimed in claim 7, it is characterised in that second feed tube is located at the packing material absorbing
One end of tower is also equipped with spray head.
9. exhaust treatment system as claimed in claim 8, it is characterised in that the row of being additionally provided with the housing wall of the cooling section
Dirty mouth.
10. exhaust treatment system as claimed in claim 9, it is characterised in that first receiving tank and described second is received
Tank is made by polypropylene material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518462.6A CN107261758A (en) | 2017-06-29 | 2017-06-29 | Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710518462.6A CN107261758A (en) | 2017-06-29 | 2017-06-29 | Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride |
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| CN107261758A true CN107261758A (en) | 2017-10-20 |
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| CN201710518462.6A Pending CN107261758A (en) | 2017-06-29 | 2017-06-29 | Fluidizing chlorination method prepares the exhaust gas treating method and processing system of zirconium oxychloride |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636066A (en) * | 2018-07-10 | 2018-10-12 | 江苏富淼科技股份有限公司 | A kind of exhaust treatment system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105268306A (en) * | 2015-11-23 | 2016-01-27 | 金川集团股份有限公司 | Low-concentration sulfur dioxide smelting off-gas desulphurization device and method |
| CN105363321A (en) * | 2015-11-20 | 2016-03-02 | 太仓市振锋化工设备有限公司 | Hydrogen chloride gas absorption device |
| CN205252883U (en) * | 2015-12-30 | 2016-05-25 | 浙江卫星能源有限公司 | Purification unit who contains sulphur, chloride tail gas |
| US20160263519A1 (en) * | 2013-11-07 | 2016-09-15 | Cansolv Technologies Inc. | Process for capturing sulfur dioxide from a gas stream |
| CN205925415U (en) * | 2016-08-29 | 2017-02-08 | 云南禄丰勤攀磷化工有限公司 | Hydrogen fluoride exhaust treatment device |
-
2017
- 2017-06-29 CN CN201710518462.6A patent/CN107261758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160263519A1 (en) * | 2013-11-07 | 2016-09-15 | Cansolv Technologies Inc. | Process for capturing sulfur dioxide from a gas stream |
| CN105363321A (en) * | 2015-11-20 | 2016-03-02 | 太仓市振锋化工设备有限公司 | Hydrogen chloride gas absorption device |
| CN105268306A (en) * | 2015-11-23 | 2016-01-27 | 金川集团股份有限公司 | Low-concentration sulfur dioxide smelting off-gas desulphurization device and method |
| CN205252883U (en) * | 2015-12-30 | 2016-05-25 | 浙江卫星能源有限公司 | Purification unit who contains sulphur, chloride tail gas |
| CN205925415U (en) * | 2016-08-29 | 2017-02-08 | 云南禄丰勤攀磷化工有限公司 | Hydrogen fluoride exhaust treatment device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636066A (en) * | 2018-07-10 | 2018-10-12 | 江苏富淼科技股份有限公司 | A kind of exhaust treatment system |
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