CN206173245U - Purification and solvent recovery unit of toluene and organic tail gas of acetone - Google Patents
Purification and solvent recovery unit of toluene and organic tail gas of acetone Download PDFInfo
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- CN206173245U CN206173245U CN201621126058.1U CN201621126058U CN206173245U CN 206173245 U CN206173245 U CN 206173245U CN 201621126058 U CN201621126058 U CN 201621126058U CN 206173245 U CN206173245 U CN 206173245U
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- tail gas
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- toluene
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Abstract
The utility model discloses a purification and solvent recovery unit of toluene and organic tail gas of acetone, include the pretreating waste gas system, adsorption system, recovery system and the automatic control system that connect gradually through sealed pipeline, this recovery unit is during horizontal adsorption tanks are introduced to the organic tail gas of exhaust in with the production process, adsorbs through the two -stage and handles the back and discharge after up to standard, letting in the low pressure water vapour after the adsorption process and carrying out the desorption, organic matter that the desorption came out and vapour mixture be through the condenser cooling, then retrieve water insoluble toluene through the layering of stewing, again then retrieve water -soluble acetone through rectification, at last will last left water addition to the steam formation device in cyclic utilization, and because the adsorption system includes a plurality ofly by the horizontal adsorption tanks of automatic control system control, and different adsorption tanks can be with being in different operating condition at one time, the assurance system can long continuous time and the not high -efficient work of mutual interference.
Description
Technical field
This utility model is related to a kind of emission-control equipment, and in particular to the purification of a kind of toluene and acetone organic tail gas with
Solvent recovery unit.
Background technology
Organic solution can be all used in the enterprise production process such as many chemical industry, pharmacy, synthesis, coating, because major part has
Solvent volatility in machine solution is stronger, causes inevitably to contain certain density organic solvent in production tail gas, both
The loss of organic solvent is caused, the pollution of environment can be caused again.Chinese patent CN203061024U discloses a kind of organic waste
Aspiration is attached and steam is desorbed recycling and processing device, for the waste gas produced by entrucking, the big breathing of storage tank, the breathing of the storage tank temperature difference, leads to
Cross and allow high-concentration waste gas to mix when most short and in the space of minimum with air, and cause the concentration after processing to drop to blast
Less than the 25% of limit lower limit, prevents waste gas from directly the danger such as blast occurring with air contact, then using adsorbent bed by waste gas
In Adsorption of Organic out, then by high-temperature steam heat adsorbent bed in activated carbon, by the organic of activated carbon internal adsorption
Thing is desorbed out, then condenses the steam with Organic substance by condenser, and coolant enters cooling liquid bath and reclaims, incoagulability
Gas is discharged Jing after processing.
But the condensed coolant of above-mentioned device is the mixture of Organic substance and water, if water-fast Organic substance
Liquid can be directly divided to reclaim, if water-fast Organic substance then needs to be separated from the water Organic substance through other processing means
Out, but the major part production process that can produce organic exhaust gas seldom comprises only a kind of organic solvent, it is typically all various to have
The production process of the mixture of machine thing, such as insulant coating, can produce the substantial amounts of organic tail gas containing toluene and acetone,
In water, acetone is then dissolved in water to toluene insoluble, toluene and acetone is carried out according to above-mentioned device recycle its clean-up effect
It is not good and organic efficiency is low.
Utility model content
In order to solve that above-mentioned existing organic waste gas treatment device adsorption rate is low, organic efficiency is low, cannot be to various mixing
Organic solvent the problems such as reclaimed, this utility model provides a kind of toluene and the purification of acetone organic tail gas is returned with solvent
Receiving apparatus, concrete scheme is as follows：
The purification of a kind of toluene and acetone organic tail gas and solvent recovery unit, including by sealing what pipeline was sequentially connected
Waste gas pretreatment system, adsorption system, recovery system and automatic control system, the adsorption system include respectively with the waste gas
Pretreatment system and some horizontal adsorption tanks of recovery system connection, are provided with gas handling system, draw in the horizontal adsorption tanks
Stream device, adsorbent equipment, gas extraction system and steam desorption system, the steam desorption system includes some steam inlets, drying
Gas entrance and drenching sprayer, the steam inlet is connected with low-pressure steam generator by sealing pipeline, described to be dried gas entrance
It is connected with by sealing pipeline and is dried air pump, the drenching sprayer is connected by sealing pipeline with water source；The recovery system bag
Condenser, standing retracting device and the distillation recovery device being sequentially connected is included, the standing retracting device includes layering groove, toluene
Recovery pipe and sewage transport pump, the distillation recovery device includes rectification pump, rectifying column, Acetone Retrieving Unit and draining dress
Put.
Further, the adsorbent equipment includes the first activated carbon granule adsorber and the second activated carbon granule adsorber,
It is respectively used to carry out primary adsorption and secondary absorption to organic tail gas, it is ensured that the toluene and acetone in tail gas is fully inhaled by activated carbon
It is attached.
Further, the first recovered liquid cache slot, institute are provided between the standing retracting device and the horizontal adsorption tanks
State and be provided with the second recovered liquid cache slot between standing retracting device and the distillation recovery device, for interim storage recovered liquid.
Further, the distillation recovery device also includes mole sieve drier, for doing to the acetone after recovery
Dry processed, it is ensured that the concentration for reclaiming acetone meets production requirement.
Further, the drainage arrangement is connected by closed conduit with the low-pressure steam generator, the draining dress
Put and the 3rd activated carbon granule adsorber is provided between the low-pressure steam generator, remaining in the water that will be discharged from drainage arrangement
Acetone adsorb, then will meet production standard water send into low-pressure steam generator in recycle.
Further, the retracting device also includes dump passage, when there is emergency in device, organic tail gas
Can discharge from accident discharge-channel in the case where normal production is not affected.
Further, the drainage system is vacuum pump, for by pending tail gas introducing device each different be
System.
The beneficial effects of the utility model are：The utility model proposes a kind of toluene and acetone organic tail gas purification
With solvent recovery unit, the organic tail gas discharged in production process are incorporated in horizontal adsorption tanks, through two-stage adsorption treatment
Discharged after up to standard afterwards；Adsorption process is passed through Low pressure steam and is desorbed after terminating, and is desorbed Organic substance out and steam
Mixture is lowered the temperature through condenser, then reclaims water-fast toluene by stratification, subsequently reclaims molten by rectification
In the acetone of water, finally last left water is added in generation device of steam and is recycled；And due to adsorption system
Horizontal adsorption tanks are controlled by automatic control system including some, different adsorption tanks can be in different work shapes the same time
State, it is ensured that system can long-time be continuous and the efficient operation that do not interfere with each other.
Description of the drawings
Fig. 1. the process flow diagram of this utility model embodiment 1,
Fig. 2. the adsorbent equipment internal structure schematic diagram of this utility model embodiment 1,
Fig. 3. the process flow diagram of this utility model embodiment 2.
Figure number and title：1st, dump passage, 2, gas extraction system, 3, steam inlet, 4, horizontal adsorption tanks, 41,
First activated carbon granule adsorber, the 42, second activated carbon granule adsorber, 5, recovery system, 6, condensing units, 7, stand and reclaim
Device, 8, distillation recovery device, 9, be dried gas entrance, 10, gas handling system.
Specific embodiment
To describe technology contents, structural features, institute's reached purpose and effect of this utility model in detail, reality is hereby enumerated below
Apply example and coordinate accompanying drawing to be explained in detail.
Embodiment 1
Refer to shown in Fig. 1-2, this utility model provides purification and the solvent recovery of a kind of toluene and acetone organic tail gas
Device, including by sealing the waste gas pretreatment system, adsorption system, recovery system and automatically control and be that pipeline is sequentially connected
System, adsorption system includes the four horizontal adsorption tanks altogether being connected with waste gas pretreatment system and recovery system respectively, horizontal suction
It is provided with gas handling system 10, drainage system, adsorbent equipment, gas extraction system 2 and steam desorption system in attached tank, adsorbent equipment includes the
One activated carbon granule adsorber 41 and the second activated carbon granule adsorber 42, be respectively used to carry out organic tail gas primary adsorption and
Secondary absorption, it is ensured that the toluene and acetone in tail gas is fully adsorbed by activated carbon；Steam desorption system includes some steam inlets
3rd, gas entrance 9 and drenching sprayer are dried, steam inlet 3 is connected with low-pressure steam generator, is dried gas entrance 9 by sealing pipeline
It is connected with by sealing pipeline and is dried air pump, drenching sprayer is connected by sealing pipeline with water source；Within the same working time, two
Individual adsorption tanks are in primary adsorption state, and an adsorption tanks are in secondary absorption state, and an adsorption tanks are desorbed shape in steam
State.
Recovery system includes the condensing units 6 being sequentially connected, stands retracting device 7 and distillation recovery device 8, stands and reclaims
Device 7 includes layering groove, toluene recovery pipeline and sewage transport pump, and distillation recovery device 8 includes rectification pump, rectifying column, acetone
Retracting device and drainage arrangement.Stand and be provided with the first recovered liquid cache slot between retracting device 7 and horizontal adsorption tanks 4, stand back
The second recovered liquid cache slot is provided between receiving apparatus 7 and distillation recovery device 8, for interim storage recovered liquid.Distillation recovery is filled
Putting 8 also includes mole sieve drier, for being dried processed to the acetone after recovery, it is ensured that reclaim the concentration symbol of acetone
Close production requirement.
Retracting device also includes dump passage 1, and when device occurs emergency, organic tail gas can not affect
Discharge from accident discharge-channel in the case of normal production.
Embodiment 2
Refer to shown in Fig. 3, embodiment 2 is with the difference of embodiment 1：Drainage arrangement is steamed by closed conduit with low pressure
Vapour generator connects, and the 3rd activated carbon granule adsorber is provided between drainage arrangement and low-pressure steam generator, will fill from draining
The acetone for putting remaining in the water of discharge is adsorbed, and is then sent in the water for meeting production standard sharp again in low-pressure steam generator
With.
In sum, the only preferred embodiment of this utility model, does not limit protection domain of the present utility model with this, all
The equivalence changes made according to this utility model the scope of the claims and description and modification, are all what this utility model patent covered
Within the scope of.
Claims (7)
1. the purification of a kind of toluene and acetone organic tail gas and solvent recovery unit, useless including what is be sequentially connected by sealing pipeline
Gas pretreating system, adsorption system, recovery system and automatic control system, it is characterised in that：The adsorption system includes difference
The some horizontal adsorption tanks (4) being connected with the waste gas pretreatment system and the recovery system, set in the horizontal adsorption tanks
There are gas handling system (10), drainage system, adsorbent equipment, gas extraction system (2) and steam desorption system, the steam desorption system bag
Include some steam inlets (3), be dried gas entrance (9) and drenching sprayer, the steam inlet (3) is connected with low by sealing pipeline
Pressure steam generator, described to be dried gas entrance (9) and be connected with and be dried air pump by sealing pipeline, the drenching sprayer is by sealing
Pipeline is connected with water source；The recovery system includes the condenser (6) being sequentially connected, stands retracting device (7) and Distillation recovery
Device (8), standing retracting device (7) includes layering groove, toluene recovery pipeline and sewage transport pump, the Distillation recovery dress
(8) are put including rectification pump, rectifying column, Acetone Retrieving Unit and drainage arrangement.
2. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The adsorbent equipment includes the first activated carbon granule adsorber (41) and the second activated carbon granule adsorber (42).
3. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The first recovered liquid cache slot is provided between standing retracting device (7) and the horizontal adsorption tanks (4), the standing is returned
The second recovered liquid cache slot is provided between receiving apparatus (7) and the distillation recovery device (8).
4. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The rectification retracting device (8) also includes mole sieve drier.
5. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The drainage arrangement is connected by closed conduit with the low-pressure steam generator, and the drainage arrangement steams with the low pressure
The 3rd activated carbon granule adsorber is provided between vapour generator.
6. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The retracting device also includes dump passage (1).
7. purification and the solvent recovery unit of a kind of toluene according to claim 1 and acetone organic tail gas, its feature exists
In：The drainage system is vacuum pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126058.1U CN206173245U (en) | 2016-10-14 | 2016-10-14 | Purification and solvent recovery unit of toluene and organic tail gas of acetone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621126058.1U CN206173245U (en) | 2016-10-14 | 2016-10-14 | Purification and solvent recovery unit of toluene and organic tail gas of acetone |
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| CN206173245U true CN206173245U (en) | 2017-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876595A (en) * | 2019-03-26 | 2019-06-14 | 北京科技大学 | A kind of auxiliary bed backheat temperature swing adsorption system and technique |
-
2016
- 2016-10-14 CN CN201621126058.1U patent/CN206173245U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876595A (en) * | 2019-03-26 | 2019-06-14 | 北京科技大学 | A kind of auxiliary bed backheat temperature swing adsorption system and technique |
| CN109876595B (en) * | 2019-03-26 | 2024-01-26 | 北京科技大学 | Auxiliary bed backheating temperature swing adsorption system and technology |
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