CN206408140U - A kind of cleaning system of acetylene - Google Patents
A kind of cleaning system of acetylene Download PDFInfo
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- CN206408140U CN206408140U CN201620687065.2U CN201620687065U CN206408140U CN 206408140 U CN206408140 U CN 206408140U CN 201620687065 U CN201620687065 U CN 201620687065U CN 206408140 U CN206408140 U CN 206408140U
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- Prior art keywords
- ionic liquid
- acetylene
- cleaning system
- thick
- purification
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Abstract
The utility model is related to a kind of cleaning system of acetylene.The system includes pretreatment system, ionic liquid cleaning system and the ionic liquid regenerative system sequentially set.The utility model solves prior art and produces a large amount of waste water and the problems such as spent acid is difficult to reuse, and can effectively remove the impurity in thick acetylene gas, and the ionic liquid of purification can be recycled.
Description
Technical field
The utility model relates generally to the field of purification of acetylene, more particularly to a kind of cleaning system of acetylene.
Background technology
Acetylene is a kind of important basic organic, is usually used in producing vinyl chloride, chemical fibre etc..Industrially, typically
Acetylene is produced using calcium carbide as raw material.Pure acetylene is the gas of no color or smell, and the acetylene Chang Yin generated by calcium carbide is mixed with vulcanization
The impurity such as hydrogen, hydrogen phosphide and arsenic hydride and have special unpleasant stink, therefore need in commercial Application to carry out thick acetylene gas
Purification, to obtain pure acetylene gas with applied to industrial production.
In the prior art, the technique purified to thick acetylene gas mainly has two kinds：Sodium hypochlorite purifies technique and dense sulphur
Acid purification technique.
The shortcoming of sodium hypochlorite acetylene purification technique has：Security is poor, and the free chlorine in liquor natrii hypochloritis can be with acetylene
Form easy explosive chloroacetylene；The wastewater flow rate that purification process is produced is than larger；Due to purifying the reuse of sodium hypochlorite waste water so that
Chloride content in carbide slag is high, it is impossible to be used in producing cement clinker, so as to cause waste residue to be difficult to handle.
Concentrated sulfuric acid purification technique equally exists its limitation.The water that the concentrated sulfuric acid is absorbed in acetylene gas can release the heat of dilution.When
When 98% sulfuric acid temperature is increased beyond 18 DEG C, the speed that acetylene is decomposed is greatly speeded up, and solution temperature rise is rapid, thus exists
Very big potential safety hazard.Sulfuric acid components after purification are complicated, rich in large amount of organic and phosphoric acid, acetylene carbon black, elemental sulfur etc., lead
Cause Waste Sulfuric Acid is black, and stench, sticky, excitant are big, it is difficult to utilize, so as to produce a large amount of spent acid.
Therefore, in order to solve prior art presence above mentioned problem, it is necessary to propose a kind of cleaning system of new acetylene.
Utility model content
The purpose of this utility model is to provide a kind of cleaning system of acetylene, a large amount of useless to solve prior art generation
Water, carbide slag be chloride to be difficult to work with and the problem of spent acid is difficult to reuse.
The utility model provides a kind of reaction system for preparing ethene, and it includes：Pretreatment system, the ion sequentially set
Fluid purification system and ionic liquid regenerative system.
Further, it is the pretreatment system in above-mentioned system includes being linked in sequence scrubber cooler, first cold
Condenser, the first moisture trap, drier and heat exchanger.
Above-mentioned system, the ionic liquid cleaning system includes ionic liquid storage tank, two-stage or the multistage sequentially set
Purifying column, the second condenser and the second moisture trap being connected in series.
Further, the purifying column may include the one or more in packed tower, spray column or plate column.
Above-mentioned system, the ionic liquid regenerative system includes equipment for separating liquid from solid, the flash tank and again sequentially set
Raw tower.
Further, the regeneration of ionic liquid outlet of the ionic liquid regenerative system can be purified with the ionic liquid is
The ionic liquid entrance of system is connected.
The beneficial effects of the utility model are that, the utility model proposes a kind of cleaning system of new acetylene, this is
System is simple to operation, it is to avoid using the sodium hypochlorite method of purification produces a large amount of waste water, carbide slag is chloride is difficult to work with and easily generates
Chloroacetylene reduces the defect of security.Equally avoid easy to equipment requirement harshness, acetylene using concentrated sulfuric acid purification acetylene technique
The problem of decomposition and spent acid are difficult to reuse.The system investments of the technical program are small, and water consumption is small, do not produce spent acid, ion
Liquid is repeatable to be utilized.
Brief description of the drawings
Fig. 1 is the structural representation of the cleaning system of acetylene in technical solutions of the utility model embodiment；
Fig. 2 is the purification process flow diagram of acetylene in technical solutions of the utility model embodiment.
In figure：1- scrubber coolers；2- cryogenic heat exchangers；3- moisture traps；4- driers I；5- driers II；6- is changed
Hot device；7- ionic liquids purifying column I；8- ionic liquids purifying column II；9- condensers；10- moisture traps；11- ionic liquids
Storage tank；12- whizzers；13- flash tanks；14- regenerators.
Embodiment
Below in conjunction with drawings and examples, embodiment of the present utility model is described in more details, with
Just scheme of the present utility model and the advantage of its various aspects be better understood when.However, specific implementations described below
Mode and embodiment are only the purposes of explanation, rather than to limitation of the present utility model.
It is the cleaning system structure chart of the acetylene in the utility model such as Fig. 1.Acetylene gas cleaning system of the present utility model,
Including pretreatment system, ionic liquid cleaning system and ionic liquid regenerative system, acetylene is mainly purified using ionic liquid
Mode, the impurity such as sulphur phosphorus arsenic in thick acetylene is removed, to reach the purification to thick acetylene gas.
Thick acetylene of the present utility model reacts the acetylene gas obtained mainly for through calcium carbide and water.
Pretreatment system includes scrubber cooler, condenser, moisture trap, drier and the heat exchanger being linked in sequence.
In scrubber cooler, thick acetylene and recirculated water are passed through, the carbide slag contained in thick acetylene is washed away through recirculated water, while so that thick
Acetylene cools.Moisture trap is used to isolate the condensed water after condensed device condensation in thick acetylene.Block can be loaded in drier
Shape anhydrous calcium chloride or filling molecular sieve set multiple driers simultaneously, for being removed water to thick acetylene.Heat exchanger is used to control
The temperature of acetylene is in suitable scope.The thick acetylene gas water content≤500ppm exported from pretreatment system, oxygen content≤
0.1%, temperature is 15-170 DEG C.
Ionic liquid cleaning system includes ionic liquid storage tank and the two-stage or the purifying column of plural serial stage, cold that are linked in sequence
Condenser, moisture trap.Purifying column includes the one or more in packed tower, spray column or plate column.Two-stage or plural serial stage
Purifying column be used for by the impurity such as the sulphur phosphorus arsenic in the thick acetylene from pretreatment system remove.Condenser and moisture trap are used
The ionic liquid carried secretly in removing acetylene, obtains smart acetylene.Obtained smart acetylene enters lower procedure.Received in moisture trap
The ionic liquid of collection can return to purifying column or ionic liquid storage tank, be recycled.The ionic liquid and acetylene during purification
Flow-rate ratio be 0.1-0.5:1, the purification residence time is 20-240 seconds.Ionic liquid may include guanidinium ionic liquid, hydramine
One or more in class ionic liquid, glyoxaline ion liquid, amide-type ionic liquid.Preferably [Bmin] FexCly、
[HMIM][MeS04]、[Emin]FexCly, caprolactam TBAB, one kind in 3- (ethoxy imines) ammonium lactate or
It is a variety of.
Ionic liquid regenerative system includes equipment for separating liquid from solid and the flash tank, the regenerator that are linked in sequence.Separation of solid and liquid is filled
Put and remove solid for the ionic liquid (rich solution) rich in impurity of auto purification tower in future.Flash tank is used for gasification separation acetylene,
The acetylene dissolved in liquid is separated.The flash distillation acetylene separated can enter the thick acetylene inlet duct of pretreatment system
Further carry out purification utilization.Regenerator is used to be regenerated the rich solution after flash distillation, obtains regeneration of ionic liquid (lean solution).Again
The ionic liquid storage tank that raw ionic liquid (lean solution) can enter in ionic liquid cleaning system, is reused.
Further, equipment for separating liquid from solid can for membrane separation device, spiral liquid separation device, centrifugal separating device and/or
Filter.
Further, flash tank can use nitrogen stripping, remove the dissolved acetylene in ionic liquid.
It is illustrated in figure 2 purification process figure of the present utility model.Carbide acetylene of the present utility model purification technique include with
Lower step：
In pretreatment system, the thick acetylene from generator sequentially enters scrubber cooler, condenser, gas-water separation
Device, multiple-stage drier, obtain water content≤500ppm thick acetylene, heat exchanger are entered afterwards, and it is 15-170 DEG C to control acetylene temperature.
In ionic liquid cleaning system, the thick acetylene from pretreatment system sequentially enters the net of two-stage or plural serial stage
Change tower, remove the impurity such as sulphur phosphorus arsenic in thick acetylene, it is rear that the ionic liquid carried secretly in acetylene is removed into condenser and moisture trap
Body, obtains smart acetylene.Smart acetylene enters lower procedure.The ionic liquid that moisture trap is collected returns to purifying column or ionic liquid
Storage tank.
In ionic liquid regenerative system, the ionic liquid (rich solution) rich in impurity from purifying column is introduced into solid-liquid point
From device, remove and enter flash tank after solid, isolate the acetylene of dissolving, flash distillation acetylene enters the thick acetylene entrance of pretreatment system
Pipeline.Rich solution after flash distillation enters regenerator, the storage that the ionic liquid (lean solution) after regeneration enters in ionic liquid cleaning system
Tank.
Carbide acetylene cleaning system and method that the utility model is provided, it is to avoid the sodium hypochlorite method of purification produces a large amount of useless
The chloride defect for being difficult to work with and easily generating chloroacetylene reduction security of water, carbide slag.Equally, concentrated sulfuric acid cleanup method pair is overcome
The problem of equipment requirement is harsh, acetylene is easily decomposed and spent acid is difficult to reuse.This technology investment is small, and water consumption is small, does not produce
Spent acid, ionic liquid is repeatable to be utilized.
Embodiment 1
As shown in Fig. 2 making thick acetylene enter scrubber cooler 1 with recirculated water, the electricity that thick acetylene contains is washed away through recirculated water
Rock ballast, while making thick acetylene cool.Thick acetylene enters back into cryogenic heat exchanger 2 (as the condenser of thick acetylene) and is further cooled to
Less than 15 DEG C, the rear condensed water isolated into moisture trap 3 in thick acetylene.Thick acetylene sequentially enters drier I 4 and II again
5.The block anhydrous calcium chloride of the filling of drier I 4, the filling molecular sieve of drier II 5.Obtain water content≤500ppm's after drying
Thick acetylene.Dried thick acetylene enters back into heat exchanger 6, and the temperature for controlling acetylene is 170 DEG C or so.Dry thick acetylene is successively
Into ionic liquid purifying column I 7 and II 8, ionic liquid is [Bmin] FexCly, the flow-rate ratio of itself and acetylene is 0.2:1, stop
Time is 140 seconds.Acetylene out sequentially enters condenser 9 and moisture trap 10 from the top of purifying column II 8, removes acetylene entrainment
Ionic liquid after obtain smart acetylene, smart acetylene can go to follow-up workshop section.The ionic liquid that moisture trap 10 is collected is reflowable extremely
Ionic liquid storage tank 11.The ionic liquid (rich solution) rich in impurity of purifying column is divided impurity into centrifugal separating device 12
From.Rich solution after separation enters the acetylene dissolved in flash column 13, discharge ionic liquid.The acetylene of discharge can enter thick acetylene hose
Road carries out circularly purifying processing.The rich solution that flash column 13 is discharged enters ionic liquid regenerator 14, and rich solution is obtained newly after regeneration
Fresh ionic liquid (lean solution), lean solution is pumped into ionic liquid storage tank 11 as ionic liquid cleanser.The present embodiment is to obtained
Sulphur phosphorus arsenic content in smart acetylene is analyzed, and analysis result is shown in Table 1.
Embodiment 2
Thick acetylene is purified using such as Fig. 2 system.So that the temperature into the thick acetylene of purifying column is 80 DEG C of left sides
The right side, the ionic liquid of purification is caprolactam TBAB, and the flow-rate ratio of itself and acetylene is 0.1:1, purify the residence time
For 240 seconds.Remaining operating procedure is consistent with embodiment 1.The present embodiment is also carried out to the sulphur phosphorus arsenic content in obtained smart acetylene
Analysis, analysis result is shown in Table 1.
Embodiment 3
Thick acetylene is purified using such as Fig. 2 system.So that the temperature into the thick acetylene of purifying column is 120 DEG C,
The ionic liquid of purification is [Emin] FexCly, the flow-rate ratio of itself and acetylene is 0.5:1, the purification residence time is 20 seconds.Remaining behaviour
Make step consistent with embodiment 1.The present embodiment is also analyzed the sulphur phosphorus arsenic content in obtained smart acetylene, analysis result
It is shown in Table 1.
Embodiment 4
Thick acetylene is purified using such as Fig. 2 system.So that the temperature into the thick acetylene of purifying column is 15 DEG C of left sides
The right side, ionic liquid is [HMIM] [MeS04], the flow-rate ratio of itself and acetylene is 0.3:1, the purification residence time is 80 seconds.Remaining behaviour
Make step consistent with embodiment 1.The present embodiment is also analyzed the sulphur phosphorus arsenic content in obtained smart acetylene, analysis result
It is shown in Table 1.
The smart acetylene of each embodiment is analyzed, it is as a result as follows：
Table 1
" ppm " in table represents concentration mass percent.From above-described embodiment, smart acetylene made from the utility model
In hydrogen sulfide, hydrogen phosphide and arsenic hydride impurity be obtained for preferable removal, meanwhile, the ionic liquid of purification has also been obtained very
Good recycles.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the utility model example,
And the not restriction to embodiment.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And thus
Among the obvious changes or variations amplified out is still in protection domain of the present utility model.
Claims (5)
1. a kind of cleaning system of acetylene, pretreatment system that the system includes sequentially setting, ionic liquid cleaning system and
Ionic liquid regenerative system；The ionic liquid cleaning system includes ionic liquid storage tank, two-stage or the multistage string sequentially set
Join purifying column, the second condenser and the second moisture trap of connection.
2. system according to claim 1, it is characterised in that the pretreatment system includes the wash cooling being linked in sequence
Device, the first condenser, the first moisture trap, drier and heat exchanger.
3. system according to claim 1, it is characterised in that the purifying column includes packed tower, spray column or plate column
In one or more.
4. system according to claim 1, it is characterised in that the ionic liquid regenerative system includes consolidating for sequentially setting
Liquid separating apparatus, flash tank and regenerator.
5. system according to claim 1, it is characterised in that the regeneration of ionic liquid of the ionic liquid regenerative system goes out
Mouth is connected with the ionic liquid entrance of the ionic liquid cleaning system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620687065.2U CN206408140U (en) | 2016-07-01 | 2016-07-01 | A kind of cleaning system of acetylene |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620687065.2U CN206408140U (en) | 2016-07-01 | 2016-07-01 | A kind of cleaning system of acetylene |
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| Publication Number | Publication Date |
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| CN206408140U true CN206408140U (en) | 2017-08-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983925A (en) * | 2017-10-25 | 2018-05-04 | 江苏亨通精工金属材料有限公司 | A kind of direct casting utter misery stripper apparatus and its release method |
-
2016
- 2016-07-01 CN CN201620687065.2U patent/CN206408140U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983925A (en) * | 2017-10-25 | 2018-05-04 | 江苏亨通精工金属材料有限公司 | A kind of direct casting utter misery stripper apparatus and its release method |
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| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20201216 Granted publication date: 20170815 |
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