CN104524804B - A kind of industrial tail gas liquefaction separation and recovery system - Google Patents
A kind of industrial tail gas liquefaction separation and recovery system Download PDFInfo
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- CN104524804B CN104524804B CN201410853683.5A CN201410853683A CN104524804B CN 104524804 B CN104524804 B CN 104524804B CN 201410853683 A CN201410853683 A CN 201410853683A CN 104524804 B CN104524804 B CN 104524804B
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- pipeline
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- control valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a kind of industrial tail gas liquefaction separation and recovery system, including the first pipeline, first pipeline be connected in parallel with several except water deacidification system be connected, except the outfan of water deacidification system is connected with cold recovery device by second pipe, cold recovery device is connected with first order heat exchange segregator by the 3rd pipeline, first order heat exchange segregator is provided institute's chilling requirement by first order low-temperature receiver, and the isolated liquid organic phase of first order heat exchange segregator enters withdrawer by the 7th pipeline after the 4th control valve.The present invention can efficiently separate the organic component in industrial tail gas, according to result of the test, can efficiently separate in Chemical Manufacture tail gas more than the 95% of organic facies composition, and the organic component reclaimed can directly return corresponding process system multiplexing；Residual gas after separation can directly discharge, and has low, the energy continuous operations in 24 hours of system operation energy consumption etc. simultaneously；Reclaim ample resources for enterprise, and reduce the discharge of a large amount of dusty gas.
Description
Technical field
The present invention relates to a kind of industrial tail gas liquefaction separation and recovery system, belong to chemical industry, energy-conservation, reduction of discharging and air dirty
Dye administers field of Environment Protection.
Background technology
It is generally necessary to exhaust emissions in current commercial production, and these industrial tail gas are typically poisonous or have environment
Other destruction, or nontoxic but containing the component much with economic worth.Current common vent gas treatment side
Formula has by torch burning, adsorbent, absorbent absorption, condensation method, membrance separation absorption method etc..Burning needs disappear
Consumption combustion material, can produce other pollutant the most simultaneously；Although absorption and absorption process effect, but adsorbing material needs
Changing frequently, and the after-treatment of the adsorbing material after adsorbing also is a problem, both approaches is run into simultaneously
This is too high；And a kind of supplementary means that current condenser method processes typically as industrial tail gas, the effect of condensation reaches not
To discharge standard, the problem such as operating cost also superelevation；Membrance separation absorption method also has investment and operating cost high, reclaims effect
The problems such as rate is undesirable.
The Chinese patent of Application No. 201220190340.1 discloses a kind of organic exhaust gas recycling system.This system is transported
Be filter, condense, compress, membrance separation, the technological means such as ultraviolet light ozone decomposition.
The Chinese patent of Application No. 201420162840.3 discloses the recycling system of a kind of torch tail gas.This system is same
The technological means such as compression, condensation, membrance separation are used.
Above-mentioned two Application No. 201220190340.1 and the Chinese patent of Application No. 201420162840.3, condensation
Being as ancillary technique means in its system equally, and its system is loaded down with trivial details, separation film therein needs the most more
Change, and its system needs compressor to be compressed industrial tail gas, run power consumption high.So first throwing of whole system
Money and operating cost are the highest, are unfavorable for promoting the use of of enterprise.
The Chinese patent of Application No. 201320111397.2 discloses a kind of industrial waste gas and utilizes device.This device is mainly
Use particular solution absorbent that industrial tail gas carries out the mode of absorption process.Secondary separation after absorbent absorption and absorption
The process of agent itself is a biggest problem equally, and a lot of absorbent itself has toxicity or corrosivity, increases enterprise
Dangerous matter sources in production process.
Additionally a lot of industrial processes are to run continuously for 24 hours, its exhaust emissions produced also be 24 hours continuously
Discharge, and the system or equipment that current most of condensation methods process tail gas is intermittent operation, it is impossible to realize 24 hours
Continuously.
Because the deficiency of current technology, the special proposition present invention.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of industrial tail gas liquefaction to separate back
Receipts system, according to result of the test, can efficiently separate in Chemical Manufacture tail gas more than the 95% of organic facies composition, and after reclaiming
Organic component can directly return corresponding process system multiplexing, the residual gas after separation can directly discharge.
Technical scheme: for solving above-mentioned technical problem, a kind of industrial tail gas liquefaction separation and recovery system of the present invention, including
First pipeline, what the first pipeline was connected in parallel with several is connected, except the outfan of water deacidification system is logical except water deacidification system
Crossing second pipe to be connected with cold recovery device, cold recovery device is connected with first order heat exchange segregator by the 3rd pipeline, the
One-level heat exchange segregator is provided institute's chilling requirement by first order low-temperature receiver, and the isolated liquid organic phase of first order heat exchange segregator leads to
Cross the 8th pipeline after the 4th control valve, enter withdrawer.
As preferably, also include that second level heat exchange segregator, the tail gas not liquefied in first order heat exchange segregator continue on through
Four pipelines flow to second level heat exchange segregator, and second level heat exchange segregator is provided cold, second level low-temperature receiver by second level low-temperature receiver
Temperature lower than first order sink temperature, second level heat exchange segregator liquefies separate organic facies by the 6th pipeline pass through
Enter withdrawer after second control valve, remain the organic facies gas that non-trace do not liquefies and control through first together with fixed gas
Valve enters cold recovery device along the 5th pipeline, is discharged in air.
As preferably, between described withdrawer and second level heat exchange segregator, it is additionally provided with the 7th pipeline, the 7th pipeline is installed
There is the 3rd control valve.
As preferably, high level switch and low liquid-level switch are installed in described withdrawer.
As preferably, between described withdrawer and the outfan removing water deacidification device, it is provided with the tenth pipeline, the tenth pipeline is pacified
Equipped with the 6th control valve.
As preferably, the liquid state organics in described withdrawer is transported to given place by the 9th pipeline, on the 9th pipeline
5th control valve is installed.
As preferably, described have two except water deacidification system, and respectively first except water deacidification system and second is except water deacidification system
System, first uses except water deacidification system phase mutual energy switching except water deacidification system and second, a set of when safeguarding, another set of comes into operation,
So can guarantee that a whole set of tail gas separation device runs for 24 hours continuously.
Cold recovery device function is that the fluid realizing two different temperatures sections carries out energy exchange, can be according to specifically applying feelings
Condition arranges one or more levels.When arranging one-level, its position can arrange the air inlet of first order heat exchange segregator, it is possible to
To be arranged on the air inlet of second level heat exchange segregator, when arranging multistage, can be at the air inlet of every grade of heat exchange segregator
Respectively set one-level.
In the present invention, first order heat exchange segregator, have heat exchange concurrently and separate two kinds of functions, first order heat exchange segregator
Temperature section is more than-45 DEG C, and the cryogenic energy needed for its heat exchange has first order low-temperature receiver to provide.
In the present invention, second level heat exchange segregator, have heat exchange concurrently and separate two kinds of functions.Second level heat exchange segregator
Temperature section is more than-80 DEG C, and the cryogenic energy needed for its heat exchange is provided by second level low-temperature receiver.
Heat exchange segregator only describes the first order and the second level in the present invention, actual can be according to concrete application institute
The working condition needed arranges the multi-stage heat exchanger separator of lower temperature section.
Withdrawer in the present invention, is responsible for collecting and temporarily storing the liquid phase Organic substance that separation heat exchanging device is separated, treats
When collecting a certain amount of, it is transported to the process section specified by corresponding technological means.
In the present invention, the systematic operation of institute and control valve instrument etc. realize automatically transporting by a set of control system
OK.
Beneficial effect: the industrial tail gas liquefaction separation and recovery system of the present invention, can efficiently separate the organic one-tenth in industrial tail gas
Part, according to result of the test, more than the 95% of organic facies composition can be efficiently separated in Chemical Manufacture tail gas, and reclaim organic
Composition can directly return corresponding process system multiplexing；Residual gas after separation can directly discharge, and has simultaneously and is
System operation energy consumption is low, can continuous operations in 24 hours etc.；Reclaim ample resources for enterprise, and reduce a large amount of dusty gas
Discharge, has the highest economic worth and the value of environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
The implication of reference in figure: 1, the first pipeline, the 2, first valve, 3, first removes water deacidification device, and 4, the
Two valves, the 5, the 3rd valve, 6, second removes water deacidification device, the 7, the 4th valve, and 8, second pipe, 9, cold
Withdrawer, the 10, the 3rd pipeline, 11, first order heat exchange segregator, the 12, the 4th pipeline, 13, second level low-temperature receiver, 14,
Second level heat exchange segregator, the 15, the 5th pipeline, the 16, first control valve, the 17, the 6th pipeline, the 18, second control valve,
19, the 7th pipeline, the 20, the 3rd control valve, the 21, the 4th control valve, the 22, the 8th pipeline, 23, withdrawer, 24,
High level switch, 25, low liquid-level switch, the 26, the 9th pipeline, the 27, the 5th control valve, the 28, the 6th control valve, 29,
Tenth pipeline, 30, first order low-temperature receiver, 31, control system.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As it is shown in figure 1, a kind of industrial tail gas liquefaction separation and recovery system of the present invention, including: industrial tail gas deacidifies except water
System, tail gas liquefaction and separation system, separation exhaust gas recovery system, cold source system and electric control system 31.
Wherein industrial tail gas includes that two groups: first group is except water deacidification system, and the first valve 2, first is except water deacidification device
3 and second valve 4, they are followed successively by series relationship；Second group is, the 3rd valve 5, second is except water deacidification device 6
With the 4th valve 7, they are followed successively by series relationship.Aforementioned two groups except water deacidification system be parallel relationship.
Tail gas liquefaction and separation system includes: cold recovery device 9, first order heat exchange segregator 11, second level heat exchange segregator
14 and first control valve 16.
Separate exhaust gas recovery system bag: withdrawer 23, high level switch 24, low liquid-level switch the 25, second control valve 18,
3rd control valve the 20, the 4th control valve the 21, the 5th control valve 27 and the 6th control valve 28.
Cold source system includes: first order low-temperature receiver 30 and second level low-temperature receiver 13.Wherein first order low-temperature receiver 30 is responsible for the first order
Heat exchange segregator 11 provides required cold, second level low-temperature receiver 13 to be responsible for second level heat exchange segregator 14 and provides required
Cold, the sink temperature that second level low-temperature receiver 13 is provided is lower than the sink temperature that first order low-temperature receiver 30 is provided.
Specific works process is: needs industrial tail gas to be processed to be entered the first pipeline 1 by A, enters through the first valve 2
First removes water deacidification device 3, enters the first pipeline 8 (or warp through the second valve 4 after removing the moisture in tail gas and acid
3rd valve 5 enters second and removes water deacidification device 6, enters first through the 4th valve 7 after removing the moisture in tail gas and acid
Pipeline 8), then cold recovery device 9 neutralize the remaining cryogenic gas from the 5th pipeline 15 carry out heat exchange thus
Reclaiming this part cold, the tail gas completing heat exchange enters first order heat exchange through the 3rd pipeline 10 from cold recovery device 9
Separator 11, in first order heat exchange segregator 11, in tail gas, part organic facies is liquefied separation, and isolated liquid has
Machine the 8th pipeline 22 that hands down enters withdrawer 23 after the 4th control valve 21, and the tail gas not liquefied continues on through the 4th pipeline
12 flow to second level heat exchange segregator 14, and in second level heat exchange segregator 14, in tail gas, major part organic facies is liquefied point
From, this liquid organic phase being partially separated out enters withdrawer 23 along the 6th pipeline 17 after the second control valve 18, surplus
More than the organic facies gas that do not liquefies of non-trace enter cold through the first control valve 16 along the 5th pipeline 15 together with fixed gas
Withdrawer 9 and wherein new tail gas from the five the first pipelines 8 carry out heat exchange, then empty at C；All liquefaction
The liquid phase Organic substance separated is assembled in withdrawer 23, when liquid level height to high level switch 24 action, and the second control
Valve the 18, the 3rd control valve 20 processed and the 4th control valve 21 are closed, and open the 6th control valve 28, draw through the tenth pipeline 29
Entering new tail gas and withdrawer 23 is carried out ftercompction, the 5th control valve 27 is opened in ftercompction after completing, and allows the liquid in withdrawer 23
Organic substance is transported to the process section B multiplexing specified along the 9th pipeline 26, the liquid reclaimed when low liquid-level switch 25 action
Organic substance has carried, and closes the 5th control valve 27 and the 6th control valve 28, opens the second control valve the 18, the 3rd control
Valve 20 and the 4th control valve 21, now the gas containing organic component in withdrawer 23 controls 20 along the 7th pipe through the 3rd
Road 19 enters and carries out liquefaction separation in second level heat exchange segregator 14；First order low-temperature receiver 30 is continued by corresponding pipeline
Provide low temperature cold to ensure separation temperature to first order heat exchange segregator 11, second level low-temperature receiver 13 is by corresponding pipe
What road was lasting provides more low temperature cold to ensure separation temperature to second level heat exchange segregator 14.In aforesaid work process
In system, cooperation and action relationships between a function all have control system 31 to provide corresponding control management to realize.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art
For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (6)
1. industrial tail gas liquefaction separation and recovery system, it is characterised in that: include the first pipeline, if the first pipeline with
Dry be connected in parallel connect, except the outfan of water deacidification system is by second pipe and cold recovery device except water deacidification system
Connecting, cold recovery device is connected with first order heat exchange segregator by the 3rd pipeline, and first order heat exchange segregator is by the first order
Low-temperature receiver provides institute's chilling requirement, and the isolated liquid organic phase of first order heat exchange segregator is controlled through the 4th by the 8th pipeline
Withdrawer is entered after valve；
Also include that second level heat exchange segregator, the tail gas not liquefied in first order heat exchange segregator continue on through the 4th pipeline and flow to
Second level heat exchange segregator, second level heat exchange segregator is provided cold by second level low-temperature receiver, the temperature of second level low-temperature receiver ratio the
One-level sink temperature is low, and the organic facies separated that liquefies in the heat exchange segregator of the second level passes through the 6th pipeline through the second control valve
Rear entrance withdrawer, remain organic facies gas that non-trace do not liquefies together with fixed gas through the first control valve along the 5th pipe
Road enters cold recovery device, is discharged in air.
Industrial tail gas the most according to claim 1 liquefaction separation and recovery system, it is characterised in that: described withdrawer with
It is additionally provided with the 7th pipeline between the heat exchange segregator of the second level, the 7th pipeline is provided with the 3rd control valve.
Industrial tail gas the most according to claim 2 liquefaction separation and recovery system, it is characterised in that: in described withdrawer
High level switch and low liquid-level switch are installed.
Industrial tail gas the most according to claim 3 liquefaction separation and recovery system, it is characterised in that: described withdrawer with
Except being provided with the tenth pipeline between the outfan of water deacidification device, the tenth pipeline is provided with the 6th control valve.
Industrial tail gas the most according to claim 4 liquefaction separation and recovery system, it is characterised in that: in described withdrawer
Liquid state organics be transported to given place by the 9th pipeline, the 9th pipeline is provided with the 5th control valve.
Industrial tail gas the most according to claim 1 liquefaction separation and recovery system, it is characterised in that: described except water deacidification
System has two, and respectively first except water deacidification system and second is except water deacidification system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853683.5A CN104524804B (en) | 2014-12-26 | 2014-12-26 | A kind of industrial tail gas liquefaction separation and recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410853683.5A CN104524804B (en) | 2014-12-26 | 2014-12-26 | A kind of industrial tail gas liquefaction separation and recovery system |
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| Publication Number | Publication Date |
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| CN104524804A CN104524804A (en) | 2015-04-22 |
| CN104524804B true CN104524804B (en) | 2017-01-04 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919503A (en) * | 1982-07-23 | 1984-02-01 | Mitsubishi Heavy Ind Ltd | Apparatus for recovering volatile substance |
| CN202105454U (en) * | 2011-06-02 | 2012-01-11 | 长兴化学材料(珠海)有限公司 | Waste gas deep-cooling system |
| CN103836833B (en) * | 2013-11-26 | 2017-01-18 | 上海森鑫新能源科技有限公司 | VOCs refrigeration recycling system capable of continuously running |
| CN204411759U (en) * | 2014-12-26 | 2015-06-24 | 渡润环境科技(上海)有限公司 | A kind of industrial tail gas liquefaction separation and recovery system |
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