CN206950931U - The parsing of by-product hydrochloric acid and circulation and stress device in VCM synthesis - Google Patents
The parsing of by-product hydrochloric acid and circulation and stress device in VCM synthesis Download PDFInfo
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- CN206950931U CN206950931U CN201720581139.9U CN201720581139U CN206950931U CN 206950931 U CN206950931 U CN 206950931U CN 201720581139 U CN201720581139 U CN 201720581139U CN 206950931 U CN206950931 U CN 206950931U
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Abstract
The utility model discloses a kind of parsing of by-product hydrochloric acid in VCM synthesis and circulation and stress device, including falling-film absorber, concentrated acid groove, water scrubber, dilute acid bath, diluted acid circulating pump, diluted acid cooler, Countermeasure of Concentrated Acid Pump, concentrated acid preheater, Analytic Tower and hydrogen chloride condensed device.Synthesis gas containing excessive hydrogen chloride passes through falling-film absorber, removes most of hydrogen chloride, and surplus hydrogen chloride further removes in water scrubber；The concentrated hydrochloric acid of falling-film absorber discharge is preheated to enter Analytic Tower afterwards, recycling after the hydrogen chloride gas come out from concentrated hydrochloric acid desorption is condensed；The diluted acid of Analytic Tower discharge is partly into falling-film absorber and is used for concentrate, and another part squeezes into water scrubber and is used to absorb remaining hydrogen chloride gas in thick vinyl chloride gas；Enter dilute acid bath after into the diluted acid discharge in water scrubber, so as to complete diluted acid systemic circulation.The utility model is simple and reasonable, parsing and recovery are thorough, process power consumption is low, has stronger economic and practical, has a extensive future.
Description
Technical field
Chemical industry production retracting device technical field is the utility model is related to, is closed more particularly, to a kind of vinyl chloride
Parsing and circulation and stress device into middle by-product hydrochloric acid.
Background technology
Using in carbide synthesis vinyl chloride thereof, after unstripped gas hydrogen chloride and acetylene are sufficiently mixed into blender, mix
Gas is condensed to -14~-17 DEG C by two-stage graphite, and removes the moisture of wherein most, then by acid mist filter, is removed
A small amount of moisture, converter finally is sent into after preheater preheats again, in the presence of mercuric chloride catalyst, it is anti-that addition heat release occurs
Answer synthesis vinyl chloride thereof gas.
In order to improve the conversion ratio of acetylene, the most frequently used economically viable method is that hydrogen chloride gas is somewhat excessive, in chlorine
Hydrogen chloride gas and acetylene gas are (1. 05~1.10) in molar ratio during ethylene synthase：1.However, due to hydrogen chloride gas
Body is excessive, and thick vinyl chloride gas removes most of excessive hydrogen chloride by falling-film absorber and water scrubber after reaction, produces matter
The concentrated hydrochloric acid of fraction about 31% is measured, because this part concentrated hydrochloric acid has brought the impurity such as Trace Mercury, iron, Zhi Neng into during the course of the reaction
It is required that relatively low applications.
For the above situation, many enterprises parse to by-product hydrochloric acid, so as to reach recovery hydrogen chloride gas therein
Purpose.However, deep analysis technique needs increased equipment investment larger, and resolving power consumption is high, and economic serviceability is poor；And
Conventional resolution technique can not thoroughly utilize diluted acid again, and so as to cause the processing cost of diluted acid higher, parsing effect is undesirable.
In summary, the parsing of by-product hydrochloric acid and the research of circulation and recovery process and device and opened in VCM synthesis
During hair, the defects of how overcoming in the presence of prior art, there is provided a kind of simple in construction, design science rationally, parsing and
It is urgently to be resolved hurrily at present that recovery is thorough, parse and removal process power consumption is low and has the circulation and stress device of stronger economic and practical
Key issue.
The content of the invention
In view of the deficienciess of the prior art, the utility model provides a kind of solution of by-product hydrochloric acid in VCM synthesis
Analysis and circulation and stress device.
The utility model adopts the following technical scheme that：
The parsing of by-product hydrochloric acid and circulation and stress device in a kind of VCM synthesis, including falling-film absorber, concentrated acid groove,
Water scrubber, dilute acid bath, diluted acid circulating pump, diluted acid cooler, Countermeasure of Concentrated Acid Pump, concentrated acid preheater, Analytic Tower, hydrogen chloride condensed device, institute
State gas access, gas vent and the discharging opening of falling-film absorber respectively with vinyl chloride reaction gas, the gas of water scrubber after cooling
Body entrance connects with concentrated acid groove, and the inlet and outlet of the Countermeasure of Concentrated Acid Pump connects with the concentrated acid entrance of concentrated acid groove and concentrated acid preheater respectively
Connect, after the preheating concentrated acid outlet of the concentrated acid preheater, parsing after diluted acid entrance and precooling diluted acid outlet respectively with Analytic Tower
Concentrated acid entrance connects with the entrance of diluted acid outlet and diluted acid cooler after parsing after preheating, and the hydrogen chloride condensed device enters
Mouthful and outlet reclaim house steward with gas vent after the parsing of Analytic Tower and hydrogen chloride gas respectively and be connected, the dilute acid bath respectively with
The outlet of diluted acid cooler, the by-product diluted acid outlet of water scrubber connect with diluted acid pump entry, and the diluted acid circulating pump goes out
Mouth is connected with the circulation fluid entrance of falling-film absorber and the diluted acid entrance of water scrubber, and the gas vent of the water scrubber is with going alkali cleaning
Tower connects.
In the above-mentioned technical solutions, the parsing and circulation and stress device also include reboiler, the entrance of the reboiler
It is connected respectively with diluted acid outlet after the parsing of Analytic Tower and the watery hydrochloric acid steam inlet boiled again after heating with outlet.
In the above-mentioned technical solutions, the parsing and circulation and stress device also enter acid cooler, the water including water scrubber
Wash tower and enter the entrance of acid cooler and be connected with the outlet of diluted acid circulating pump, the water scrubber enters the outlet of acid cooler and falling liquid film is inhaled
The circulation fluid entrance for receiving device connects with the diluted acid entrance of water scrubber.
In the above-mentioned technical solutions, the parsing and circulation and stress device also include thin acid pump, the entrance of the thin acid pump
The outlet with diluted acid cooler and dilute acid bath are connected respectively with outlet.
In the above-mentioned technical solutions, the diluted acid cooler is two level diluted acid cooler.
Further, in the above-mentioned technical solutions, the diluted acid cooler includes first order diluted acid cooler and the second level
Diluted acid cooler, the cooling medium of the first order diluted acid cooler are recirculated water, the cooling of the second level diluted acid cooler
Medium is 7 DEG C of recirculated water.
In the above-mentioned technical solutions, the hydrogen chloride condensed device is the hydrogen-cooled condenser of secondary chlorination.
Further, in the above-mentioned technical solutions, the hydrogen chloride condensed device includes first order hydrogen chloride condensed device and the
The hydrogen-cooled condenser of secondary chlorination, the cooling medium of the first order hydrogen chloride condensed device are 7 DEG C of recirculated water, the second level chlorination
The cooling medium of hydrogen-cooled condenser is -35 DEG C of chilled brine.
In the above-mentioned technical solutions, the diluted acid entrance of the water scrubber is also connected with being provided with industry water filling pipe.
In the above-mentioned technical solutions, the water scrubber is combined type water scrubber, including the bubble cap plate set from top to down
And packed tower.
The utility model has the advantages that：
(1) parsing designed by the utility model and circulation and stress device pass through falling-film absorber and the common work of water scrubber
With, it on the one hand can remove the hydrogen chloride gas in thick vinyl chloride synthetic gas completely, and by concentrated acid caused by falling-film absorber bottom
Enter Analytic Tower after preheated to parse, recycle hydrogen chloride gas and be used in the synthesis of vinyl chloride gas, on the other hand, can
Diluted acid caused by water scrubber is again introduced into falling-film absorber and carries out parsing and circulation and stress process next time；By using parsing
The combination of tower and concentrated acid preheater and reboiler, the parsing effect of concentrated acid is good after on the one hand preheating, and on the other hand, passes through reboiler
Heating after enter back into Analytic Tower, further increase its parse effect；
(2) parsing designed by the utility model and circulation and stress device by the concentrated acid in concentrated acid groove by entering parsing
85 DEG C of diluted acid after being parsed before tower with Analytic Tower is exchanged heat in concentrated acid preheater, rationally using heat energy, so as to significantly
Reduce the power consumption of resolving；
(3) parsing designed by the utility model and circulation and stress device in water scrubber diluted acid entrance by filling into a small amount of work
Industry water, and from dilute acid bath discharge and fill into the diluted acid of industry water same amount, for neutralize discharged in caustic wash tower it is useless gradually, ensure dilute
The normal operation of acid circulation, so as to ensure that the thorough parsing and recycling of by-product diluted acid, and can be by the chlorination of recovery
Hydrogen is simultaneously used in the synthesis of vinyl chloride gas, and economic and practical is strong, has a extensive future；
(4) parsing designed by the utility model and circulation and stress apparatus structure are simple, design science is reasonable, equipment investment
It is small, resolving is controllable and processing cost is low, there is the stronger market competitiveness.
Brief description of the drawings
Fig. 1 for by-product hydrochloric acid in a kind of VCM synthesis for being provided according to the utility model embodiment one parsing and
The structural representation of circulation and stress device；
Fig. 2 for by-product hydrochloric acid in a kind of VCM synthesis for being provided according to the utility model embodiment two parsing and
The structural representation of circulation and stress device；
In figure：Falling-film absorber 1, concentrated acid groove 2, water scrubber 3, dilute acid bath 4, diluted acid circulating pump 5, diluted acid cooler 6 (first
Level diluted acid cooler 61, second level diluted acid cooler 62), Countermeasure of Concentrated Acid Pump 7, concentrated acid preheater 8, Analytic Tower 9, hydrogen chloride condensed device 10
(first order hydrogen chloride condensed device 101, second level hydrogen chloride condensed device 102), reboiler 11, thin acid pump 12, it is cold that water scrubber enters acid
But device 13.
Embodiment
With reference to specific embodiment, specific embodiment of the present utility model is described in further detail.Following reality
Apply example and be merely to illustrate the utility model, be not intended to limit specific protection domain of the present utility model.
In description of the present utility model, unless otherwise indicated, " multiple " are meant that two or more；Term
The orientation or position of the instruction such as " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", " afterbody " are closed
It is to be described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not
It is interpreted as the limitation to wooden utility model.
, it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " 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 to be joined directly together, can also be indirectly connected by intermediary.For the ordinary skill in the art, can be specific
Situation understands concrete meaning of the above-mentioned term in the utility model.
Embodiment one
As shown in figure 1, in a kind of VCM synthesis that the utility model embodiment one is provided by-product hydrochloric acid parsing
With circulation and stress device, including falling-film absorber 1, concentrated acid groove 2, water scrubber 3, dilute acid bath 4, diluted acid circulating pump 5, diluted acid cooler
6th, Countermeasure of Concentrated Acid Pump 7, concentrated acid preheater 8, Analytic Tower 9, hydrogen chloride condensed device 10.
Vinyl chloride reaction feed channel connection behind the gas access of falling-film absorber 1 and cooling, its gas vent and washing
The gas access connection of tower 3, its discharging opening are connected by pipeline with concentrated acid groove 2；The import of Countermeasure of Concentrated Acid Pump 7 is connected with concentrated acid groove 2,
Outlet is connected with the concentrated acid entrance of concentrated acid preheater 8；Concentrated acid preheater 8 preheating concentrated acid outlet with it is dense after the preheating of Analytic Tower 9
Sour entrance connection, diluted acid entrance connects with diluted acid outlet after the parsing of Analytic Tower 9 after parsing, and diluted acid outlet is cold with diluted acid after precooling
But the entrance connection of device 6；Gas vent is connected with the entrance of hydrogen chloride condensed device 10 after the parsing of Analytic Tower 9；Hydrogen chloride condensed
The outlet of device 10 is connected with hydrogen chloride gas recovery house steward；The outlet of diluted acid cooler 6 is connected by pipeline with dilute acid bath 4；Water
The by-product diluted acid outlet for washing tower 3 is connected by pipeline with dilute acid bath 4；The import of diluted acid circulating pump 5 is connected with dilute acid bath 4, outlet
It is connected simultaneously with the circulation fluid entrance of falling-film absorber 1 and the diluted acid entrance of water scrubber 3 by threeway and pipeline；Water scrubber 3
Gas vent is with going caustic wash tower to be connected.
The parsing of by-product hydrochloric acid and circulation and stress in a kind of VCM synthesis that the utility model embodiment one is provided
The course of work of device is as follows：Vinyl chloride synthetic gas after cooling containing excessive hydrogen chloride passes through falling-film absorber 1, with diluted acid
The diluted acid that groove 4 comes carries out heat and mass in the same direction, removes most of hydrogen chloride gas, subsequent vinyl chloride synthetic gas passes through water scrubber
After 3 further remove hydrogen chloride gas, go out tower from the gas vent of water scrubber 3, into caustic wash tower；The discharging opening of falling-film absorber 1 is arranged
Go out the concentrated hydrochloric acid that concentration is about 31wt%, borrow difference and enter concentrated acid groove 2, get to after concentrated acid preheater 8 preheats and enter through Countermeasure of Concentrated Acid Pump 7
Analytic Tower 9, analytically gas vent goes out tower to the hydrogen chloride gas come out from concentrated acid desorption in Analytic Tower 9 after the parsing of tower 9, through chlorine
Change and reused after entering HCl recovery house steward's recovery after the hydrogen-cooled condenser of condenser 10；Diluted acid outlet discharge after analytically tower 9 parses
Concentration be about 22wt% 85 DEG C of diluted acid with enter Analytic Tower before concentrated acid exchanged heat in concentrated acid preheater 8,
Then enter back into after diluted acid cooler 6 cools down and enter dilute acid bath 4；Diluted acid in dilute acid bath 4 through diluted acid circulating pump 5 by pipeline,
It is partly into falling-film absorber 1 and is used for concentrate, it is remaining in thick vinyl chloride gas for absorbing that another part squeezes into water scrubber 3
Hydrogen chloride gas；Export and discharge from the by-product diluted acid of water scrubber 3 into the diluted acid in water scrubber 3, into dilute acid bath 4, so as to most
Diluted acid systemic circulation is completed eventually.
From dilute acid bath 4 eject diluted acid into falling-film absorber 1 flow and enter water scrubber 3 flow can root
Adjusted according to actual condition, so that it is guaranteed that diluted acid circulation is finally reached poised state；In addition, exhausted big portion in thick vinyl chloride synthetic gas
The hydrogen chloride gas divided removes in falling-film absorber 1, and remainder removes in water scrubber 3.
Embodiment two
The parsing and circulation of by-product hydrochloric acid in a kind of VCM synthesis that Fig. 2 is provided by the utility model embodiment two
The structural representation of retracting device, parsing and circulation and stress device in the present embodiment and the parsing in embodiment one and is recycled back to
Receiving apparatus structure is similar, and different places are, the parsing of the present embodiment and circulation and stress device also include reboiler 11, thin acid pump
12 and water scrubber enter acid cooler 13, the entrance of reboiler 11 connects with diluted acid outlet after the parsing of Analytic Tower 9, outlet and parsing
The watery hydrochloric acid steam inlet connection boiled again after heating of tower 9；The entrance and exit of thin acid pump 12 goes out with diluted acid cooler 6 respectively
Mouth and dilute acid bath 4 connect；The entrance that water scrubber enters acid cooler 13 is connected with the outlet of diluted acid circulating pump 5, and outlet is inhaled with falling liquid film
The circulation fluid entrance for receiving device 1 connects with the diluted acid entrance of water scrubber 3.
More specifically, diluted acid cooler 6 is two level diluted acid cooler, including first order diluted acid cooler 61 and the second level it is dilute
Acid cooler 62, the cooling medium of first order diluted acid cooler 61 are recirculated water, the cooling medium of second level diluted acid cooler 62
For 7 DEG C of recirculated water.The entrance of first order diluted acid cooler 61 connects with diluted acid outlet after the precooling of concentrated acid preheater 8, and first
The outlet of level diluted acid cooler 61 is connected with the entrance of second level diluted acid cooler 62, the outlet of second level diluted acid cooler 62 and
Thin acid pump 12 is connected by pipeline.
More specifically, hydrogen chloride condensed device 10 is the hydrogen-cooled condenser of secondary chlorination, including the He of first order hydrogen chloride condensed device 101
Second level hydrogen chloride condensed device 102, the cooling medium of first order hydrogen chloride condensed device 101 are 7 DEG C of recirculated water, second level chlorine
The cooling medium for changing hydrogen-cooled condenser 102 is -35 DEG C of chilled brine.The entrance and Analytic Tower of first order hydrogen chloride condensed device 101
Gas vent connects after 9 parsing, the outlet of first order hydrogen chloride condensed device 101 and entering for second level hydrogen chloride condensed device 102
Mouth connection, the outlet of second level hydrogen chloride condensed device 102 are reclaimed house steward with HCl by pipeline and are connected.
In addition, water scrubber 3 is combined type water scrubber, including the bubble cap plate and packed tower set from top to down；Meanwhile
The diluted acid entrance of water scrubber 3 is also connected with being provided with industry water filling pipe, and fills into a small amount of industry water according to actual condition, and from dilute
The diluted acid of industry water same amount is discharged and filled into acid tank, for neutralizing the spent lye discharged in caustic wash tower, ensures diluted acid circulation
Normal operation.
Parsing and the course of work of circulation and stress device that the present embodiment is provided place similar with embodiment one, different
It is, it is parsed and circulation and stress effect is more preferable, more efficient, and is parsed and the control of circulation and stress process simpler has
Effect.
Finally, preferred embodiment of the present utility model is these are only, is not intended to limit protection model of the present utility model
Enclose.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., it should be included in this
Within the protection domain of utility model.
Claims (10)
1. the parsing of by-product hydrochloric acid and circulation and stress device in a kind of VCM synthesis, it is characterised in that including falling film absorption
It is device (1), concentrated acid groove (2), water scrubber (3), dilute acid bath (4), diluted acid circulating pump (5), diluted acid cooler (6), Countermeasure of Concentrated Acid Pump (7), dense
Sour preheater (8), Analytic Tower (9), hydrogen chloride condensed device (10), the gas access of the falling-film absorber (1), gas vent and
Discharging opening is connected with the vinyl chloride reaction gas after cooling, the gas access of water scrubber (3) and concentrated acid groove (2) respectively, the concentrated acid
Concentrated acid entrance of the inlet and outlet of pump (7) respectively with concentrated acid groove (2) and concentrated acid preheater (8) is connected, the concentrated acid preheater
(8) diluted acid outlet enters with concentrated acid after the preheating of Analytic Tower (9) respectively after diluted acid entrance and precooling after preheating concentrated acid outlet, parsing
Mouthful and parsing after diluted acid outlet and the entrance of diluted acid cooler (6) connect, the entrance of the hydrogen chloride condensed device (10) with go out
Mouth respectively with gas vent after the parsing of Analytic Tower (9) and hydrogen chloride gas recovery house steward be connected, the dilute acid bath (4) respectively with
The outlet of diluted acid cooler (6), the by-product diluted acid outlet of water scrubber (3) connect with diluted acid circulating pump (5) entrance, and the diluted acid follows
The outlet of ring pump (5) is connected with the circulation fluid entrance of falling-film absorber (1) and the diluted acid entrance of water scrubber (3), the water scrubber
(3) gas vent is with going caustic wash tower to be connected.
2. parsing according to claim 1 and circulation and stress device, it is characterised in that described also including reboiler (11)
The entrance and exit of reboiler (11) exports and boiled again the watery hydrochloric acid steam after heating with diluted acid after the parsing of Analytic Tower (9) respectively
Entrance connects.
3. parsing according to claim 1 and circulation and stress device, it is characterised in that also enter acid cooler including water scrubber
(13), the water scrubber enters the entrance of acid cooler (13) and is connected with the outlet of diluted acid circulating pump (5), and it is cold that the water scrubber enters acid
But the outlet of device (13) is connected with the circulation fluid entrance of falling-film absorber (1) and the diluted acid entrance of water scrubber (3).
4. parsing according to claim 1 and circulation and stress device, it is characterised in that described also including thin acid pump (12)
The outlet with diluted acid cooler (6) and dilute acid bath (4) are connected the entrance and exit of thin acid pump (12) respectively.
5. parsing and circulation and stress device according to claim any one of 1-4, it is characterised in that the diluted acid cooler
(6) it is two level diluted acid cooler.
6. parsing according to claim 5 and circulation and stress device, it is characterised in that the diluted acid cooler (6) includes
First order diluted acid cooler (61) and second level diluted acid cooler (62), the cooling medium of the first order diluted acid cooler (61)
For recirculated water, the cooling medium of the second level diluted acid cooler (62) is 7 DEG C of recirculated water.
7. parsing and circulation and stress device according to claim any one of 1-4, it is characterised in that the hydrogen chloride condensed
Device (10) is the hydrogen-cooled condenser of secondary chlorination.
8. parsing according to claim 7 and circulation and stress device, it is characterised in that hydrogen chloride condensed device (10) bag
Include first order hydrogen chloride condensed device (101) and second level hydrogen chloride condensed device (102), the first order hydrogen chloride condensed device
(101) cooling medium is 7 DEG C of recirculated water, and the cooling medium of the second level hydrogen chloride condensed device (102) is -35 DEG C cold
Freeze salt solution.
9. parsing and circulation and stress device according to claim any one of 1-4, it is characterised in that the water scrubber (3)
Diluted acid entrance be also connected with being provided with industry water filling pipe.
10. parsing and circulation and stress device according to claim any one of 1-4, it is characterised in that the water scrubber (3)
For combined type water scrubber, including the bubble cap plate and packed tower set from top to down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720581139.9U CN206950931U (en) | 2017-05-23 | 2017-05-23 | The parsing of by-product hydrochloric acid and circulation and stress device in VCM synthesis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720581139.9U CN206950931U (en) | 2017-05-23 | 2017-05-23 | The parsing of by-product hydrochloric acid and circulation and stress device in VCM synthesis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108314603A (en) * | 2018-03-29 | 2018-07-24 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of hydrochloric acid full stripping devices and methods therefor |
| CN108325541A (en) * | 2018-03-26 | 2018-07-27 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | The activation system and method for calcium carbide process PVC production of resins catalyst |
| CN108662921A (en) * | 2018-06-01 | 2018-10-16 | 湖南国盛石墨科技有限公司 | A kind of combined type graphite concentrated acid dilution cooler |
| CN114425175A (en) * | 2020-09-05 | 2022-05-03 | 中国石油化工股份有限公司 | High-boiling-point substance metal ion extraction and removal system and process |
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2017
- 2017-05-23 CN CN201720581139.9U patent/CN206950931U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108325541A (en) * | 2018-03-26 | 2018-07-27 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | The activation system and method for calcium carbide process PVC production of resins catalyst |
| CN108325541B (en) * | 2018-03-26 | 2023-12-05 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | System and method for activating catalyst for calcium carbide PVC resin production |
| CN108314603A (en) * | 2018-03-29 | 2018-07-24 | 内蒙古鄂尔多斯电力冶金集团股份有限公司 | A kind of hydrochloric acid full stripping devices and methods therefor |
| CN108662921A (en) * | 2018-06-01 | 2018-10-16 | 湖南国盛石墨科技有限公司 | A kind of combined type graphite concentrated acid dilution cooler |
| CN114425175A (en) * | 2020-09-05 | 2022-05-03 | 中国石油化工股份有限公司 | High-boiling-point substance metal ion extraction and removal system and process |
| CN114425175B (en) * | 2020-09-05 | 2023-04-07 | 中国石油化工股份有限公司 | High-boiling-point substance metal ion extraction and removal system and process |
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