CN107501029A - A kind of toluene recovery device - Google Patents
A kind of toluene recovery device Download PDFInfo
- Publication number
- CN107501029A CN107501029A CN201710667070.6A CN201710667070A CN107501029A CN 107501029 A CN107501029 A CN 107501029A CN 201710667070 A CN201710667070 A CN 201710667070A CN 107501029 A CN107501029 A CN 107501029A
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- condenser
- outlet
- recovery device
- toluene
- liquid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a kind of toluene recovery device, including rectifying column, condenser, liquid separation tank and sewage-treatment plant, the condensate outlet of condenser is connected with the inlet of liquid separation tank, the bottom of liquid separation tank is provided with wastewater outlet, wastewater outlet is connected with toluene recovery device exterior line, the liquid outlet being additionally provided with liquid separation tank above wastewater outlet, liquid outlet are connected with the refluxing opening and sewage-treatment plant of rectifying column respectively.Pass through the toluene recovery device of the present invention, after the condensate liquid of condenser outflow is flowed into liquid separation tank, there is lamination in water and composition containing toluene, the top for being located at water layer into layering containing toluene, then the composition containing toluene is back in rectifying column and carries out rectifying, compared with prior art, the present invention improves the rectification effect of condensate liquid, reduce the content of toluene in Produced Liquid, and then reduce the consumption of toluene and the processing cost of sewage.
Description
Technical field
The present invention relates to a kind of toluene recovery device.
Background technology
As country is to the attention of environmental protection and the enhancing of people's environmental consciousness, the Recovery Purifying treatment technology of toluene waste gas oneself
Because its cost of investment is low, desorption effect is good, is widely used in chemical enterprise for constantly maturation, wherein steam desorption gas treatment technology
Production, but had the following disadvantages during its operation：Toluene level is high in Produced Liquid, causes the increase of toluene consumption, and
Add the processing cost of sewage.
In view of this, it is special to propose the present invention.
The content of the invention
It is an object of the invention to provide a kind of toluene recovery device, and realizing reduces toluene consumption and sewage disposal expense
Purpose.
To realize the purpose, the present invention adopts the following technical scheme that：
A kind of toluene recovery device, including rectifying column, condenser, liquid separation tank and sewage-treatment plant, the condensation of condenser
Liquid outlet is connected with the inlet of liquid separation tank, and the bottom of liquid separation tank is provided with wastewater outlet, wastewater outlet and toluene recovery device
Exterior line is connected, the liquid outlet being additionally provided with liquid separation tank above wastewater outlet, liquid outlet time with rectifying column respectively
Head piece is connected with sewage-treatment plant.
Further, the toluene recovery device also includes PLC and the liquid level gauge for detecting liquid separation pot liquid water level,
PLC controls the opening and closing of wastewater outlet by liquid level gauge.
Further, the sewage-treatment plant includes incinerator, and liquid outlet is connected with incinerator.
Further, the blended benzene surge tank of the liquid outlet is connected with incinerator.
Further, the liquid outlet is connected through aftercooler with benzene mixed surge tank.
Further, the toluene recovery device also includes toluene recovery kettle, the gas outlet of toluene recovery kettle and rectifying column
Air inlet be connected, the gas outlet of rectifying column is connected with the air inlet of condenser, the gas outlet of condenser and external environment condition
It is connected.
Further, the condenser includes first-stage condenser and secondary condenser, and the gas outlet of rectifying column and one-level are cold
The air inlet of condenser is connected, and the gas outlet of first-stage condenser is connected with the air inlet of secondary condenser, secondary condenser
Gas outlet is connected with external environment condition, the condensate outlet of first-stage condenser and the condensate outlet of secondary condenser respectively with
The inlet of liquid separation tank is connected.
Further, inlet of the condensate outlet of the condenser by the road with liquid separation tank is connected, toluene recovery
Device also includes PLC and the flow sensor for fluid flow in signal piping, and PLC controls waste water to go out by flow sensor
The opening and closing of mouth.
Further, the toluene recovery device also includes PLC and for detecting gas temperature at condenser gas outlet
Temperature sensor, PLC control the circulation rate of condenser refrigerant by temperature sensor.
Further, the toluene recovery device also includes PLC and the pressure sensor for detecting air pressure in liquid separation tank,
Liquid separation tank is provided with stomata, and PLC controls the opening and closing of stomata by pressure sensor.
Compared with prior art, the present invention has the advantages that：
By the toluene recovery device of prior art, condenser outflow condensate liquid, which is directly back in rectifying column, carries out essence
Evaporate, and by the toluene recovery device of the present invention, after the condensate liquid of condenser outflow is flowed into liquid separation tank, water and contain toluene
There is lamination in composition, the top for being located at water layer into layering containing toluene, the composition containing toluene then is back into essence
Evaporate and rectifying is carried out in tower, compared with prior art, the present invention improves the rectification effect of condensate liquid, reduces toluene in Produced Liquid
Content, and then reduce the consumption of toluene and the processing cost of sewage.
Brief description of the drawings
A part of the accompanying drawing as the present invention, for providing further understanding of the invention, of the invention is schematic
Embodiment and its illustrate to be used to explain the present invention, but do not form inappropriate limitation of the present invention.Obviously, drawings in the following description
Only some embodiments, to those skilled in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 shows the structural representation of toluene recovery device provided by the present invention；
Wherein each group is as follows into title：
1 --- toluene recovery kettle, 2 --- rectifying column, 3 --- first-stage condenser, 4 --- secondary condenser, 5 --- it is rear cold
Device, 6 --- benzene mixed surge tank, 7 --- incinerator, 8 --- liquid separation tank, 9 --- the first pipeline, 10 --- the second pipeline,
11 --- liquid outlet, 12 --- wastewater outlet.
It should be noted that these accompanying drawings and word description are not intended as the design model limiting the invention in any way
Enclose, but be that those skilled in the art illustrate idea of the invention by reference to specific embodiment.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below to the technical side in embodiment
Case is clearly and completely described, and following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Embodiment one
As shown in figure 1, this embodiment describes a kind of toluene recovery device, including rectifying column 2, condenser, the and of liquid separation tank 8
Sewage-treatment plant, the condensate outlet of condenser are connected with the inlet of liquid separation tank 8, and the bottom of liquid separation tank 8 is provided with waste water
Outlet 12, wastewater outlet 12 is connected with toluene recovery device exterior line, is additionally provided with liquid separation tank 8 on wastewater outlet 12
The liquid outlet 11 of side, liquid outlet 11 are connected with the refluxing opening and sewage-treatment plant of rectifying column 2 respectively.
By the toluene recovery device of prior art, condenser outflow condensate liquid, which is directly back in rectifying column 2, carries out essence
Evaporate, and by the toluene recovery device of the present invention, after the condensate liquid of condenser outflow is flowed into liquid separation tank 8, water and contain toluene
Composition there is lamination, containing toluene into layering positioned at water layer top, then according to reflux ratio carry out reflux-withdrawal,
Composition containing toluene is back in rectifying column 2 and carries out rectifying, compared with prior art, the present invention improves the essence of condensate liquid
Effect is evaporated, reduces the content of toluene in Produced Liquid, and then reduces the consumption of toluene and the processing cost of sewage.
The toluene recovery device also includes toluene recovery kettle 1, the gas outlet of toluene recovery kettle 1 and the air inlet of rectifying column 2
Mouth is connected, and the gas outlet of rectifying column 2 is connected with the air inlet of condenser, and the gas outlet of condenser is connected with external environment condition
It is logical.It is also possible that the gas outlet of the condenser is connected with gas adsorbing device, to avoid polluting environment.
By optimization, the consumption of toluene is significantly reduced, and greatly reduce the processing cost of the three wastes.It is annual to reduce
Toluene consumes 30t, saves nearly 200,000 yuan of cost；It is annual to reduce containing Toluene Wastewater discharge 30t, save cost of sewage disposal nearly 60,000
Member (incinerator 7 burns 2000 yuan/t of expense).
Embodiment two
As shown in figure 1, the present embodiment and the difference of embodiment 1 are, the toluene recovery device also includes PLC and is used for
The liquid level gauge of liquid water level in liquid separation tank 8 is detected, PLC controls the opening and closing of wastewater outlet by liquid level gauge.
Above-mentioned setting realizes the control to liquid water level in liquid separation tank 8, it is achieved thereby that the control of the water level to water, keeps away
Exempted from water water level it is too high when water be back to from liquid outlet 11 in rectifying column 2 and carry out rectifying, influence the rectification effect of condensate liquid.
Embodiment three
As shown in figure 1, the present embodiment and the difference of embodiment one, two are that the sewage-treatment plant includes incinerator
7, liquid outlet 11 is connected with incinerator 7.The processing mode of the present invention is burning disposal.
Preferably, the blended benzene surge tank 6 of the liquid outlet 11 is connected with incinerator 7.
The benzene mixed surge tank 6 of above-mentioned setting has the function that compensator or trimmer pressure fluctuation, makes work more steady.
It is highly preferred that the liquid outlet 11 is connected through aftercooler 5 with benzene mixed surge tank 6.
Example IV
As shown in figure 1, the present embodiment and the difference of embodiment one to three are, the condenser includes first-stage condenser 3
With secondary condenser 4, the gas outlet of rectifying column 2 is connected with the air inlet of first-stage condenser 3, the gas outlet of first-stage condenser 3
It is connected with the air inlet of secondary condenser 4, the gas outlet of secondary condenser 4 is connected with external environment condition, first-stage condenser 3
Inlet of the condensate outlet of condensate outlet and secondary condenser 4 respectively with liquid separation tank 8 is connected.
Multiple condensers of above-mentioned setting improve condensation effect, avoid the gas containing toluene and drain into external environment condition
Pollute environment.
The outer cover of the condenser is provided with chuck, and being flowed in chuck has cooling circulating water, and condenser is cross section in circle
The chamber of shape, its air inlet pipeline are arranged at the top of condenser side, and any tangent line of the pipeline axis along condenser cross section
Set, the top of condenser opposite side is provided with gas outlet, and bottom is provided with condensation-water drain, blower fan is provided with air inlet pipeline.
By above-mentioned setting, air-flow tangentially enters condenser by air inlet pipe, forms the eddy flow rotated along cavity wall,
And condensed through the cooling circulating water in chuck, condensate liquid flows out condenser along cavity wall from condensation-water drain, and gas flows from gas outlet
Go out condenser.
The condenser is that gradually expansion forms centrum from a lateral opposite side, and gas outlet is located at bottom.
The liquid separation tank 8 is located at the lower section of condenser.
Embodiment five
As shown in figure 1, the present embodiment and the difference of embodiment one to four are, the toluene recovery device also includes PLC
With the temperature sensor for detecting gas temperature at condenser gas outlet, PLC controls condenser refrigerant by temperature sensor
Circulation rate.
During toluene recovery, high-temperature gas is constantly passed through in condenser, when the circulation rate of refrigerant can not meet it is cold
Solidifying to require, when influenceing condensation effect, the air outlet temperature of condenser can raise, and the present invention passes through temperature sensor monitors condenser
The temperature of gas outlet, when temperature reaches setting value, PLC accelerates the circulation rate of refrigerant, to ensure condensation effect.
The condenser is condenser of the cooling structure located inside, to improve condensation effect.
Embodiment six
As shown in figure 1, the present embodiment and the difference of embodiment one to five are, the toluene recovery device also includes PLC
With the pressure sensor for detecting air pressure in liquid separation tank 8, liquid separation tank 8 is provided with stomata, and PLC controls gas by pressure sensor
The opening and closing in hole.
During toluene recovery, the higher condensate liquid of temperature is constantly flowed into liquid separation tank 8, causes the pressure in liquid separation tank 8
Power constantly increases, and when pressure reaches certain value, can influence the inflow of condensate liquid, the present invention passes through pressure sensor monitoring liquid separation
Pressure in tank 8, when pressure reaches setting value, PLC opens stomata by control valve, the gas inside and outside balance liquid separation tank 8
Pressure, so as to avoid the generation of the above situation.
The stomata is located at the top of liquid separation tank 8.
Embodiment seven
As shown in figure 1, the present embodiment and the difference of embodiment one to six are that the condensate outlet of the condenser is through pipe
Road is connected with the inlet of liquid separation tank 8, and toluene recovery device also includes PLC and the flow for fluid flow in signal piping
Sensor, PLC control the opening and closing of wastewater outlet 12 by flow sensor.
Specifically, the condensate outlet of first-stage condenser 3 and secondary condenser 4 is respectively through the corresponding He of the first pipeline 9
Second pipeline 10 is connected with the inlet of liquid separation tank 8, and the toluene recovery device includes being respectively used to detect the He of the first pipeline 9
Two flow sensors of fluid flow in second pipeline 10.
The amount of liquid in liquid separation tank 8 can be drawn by the detected value of two flow sensors of above-mentioned setting, so as to control
The opening and closing of wastewater outlet 12.
Described above is only presently preferred embodiments of the present invention, not makees any formal limitation to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any familiar technology people of the invention
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompting make it is a little change or be modified to
The equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit pair according to the present invention
Any simple modification, equivalent change and modification that above example is made, in the range of still falling within the present invention program.
Claims (10)
1. a kind of toluene recovery device, it is characterised in that including rectifying column, condenser, liquid separation tank and sewage-treatment plant, condensation
The condensate outlet of device is connected with the inlet of liquid separation tank, and the bottom of liquid separation tank is provided with wastewater outlet, wastewater outlet and toluene
Retracting device exterior line is connected, the liquid outlet being additionally provided with liquid separation tank above wastewater outlet, liquid outlet respectively with essence
The refluxing opening for evaporating tower is connected with sewage-treatment plant.
2. a kind of toluene recovery device according to claim 1, the toluene recovery device also includes PLC and for detecting
The liquid level gauge of liquid separation pot liquid water level, PLC control the opening and closing of wastewater outlet by liquid level gauge.
3. a kind of toluene recovery device according to claim 1, the sewage-treatment plant includes incinerator, liquid outlet with
Incinerator is connected.
4. a kind of toluene recovery device according to claim 3, the blended benzene surge tank of liquid outlet and incinerator phase
Connection.
5. a kind of toluene recovery device according to claim 4, the liquid outlet is through aftercooler and benzene mixed surge tank phase
Connection.
6. a kind of toluene recovery device according to claim 1, the toluene recovery device also includes toluene recovery kettle, first
The gas outlet of benzene recovery kettle is connected with the air inlet of rectifying column, and the gas outlet of rectifying column is connected with the air inlet of condenser,
The gas outlet of condenser is connected with external environment condition.
7. a kind of toluene recovery device according to claim 1, the condenser includes first-stage condenser and B-grade condensation
Device, the gas outlet of rectifying column are connected with the air inlet of first-stage condenser, the gas outlet of first-stage condenser and secondary condenser
Air inlet is connected, and the gas outlet of secondary condenser is connected with external environment condition, the condensate outlet and two level of first-stage condenser
Inlet of the condensate outlet of condenser respectively with liquid separation tank is connected.
8. a kind of toluene recovery device according to claim 1, the condensate outlet of the condenser by the road with liquid separation
The inlet of tank is connected, and toluene recovery device also includes PLC and the flow sensor for fluid flow in signal piping,
PLC controls the opening and closing of wastewater outlet by flow sensor.
9. a kind of toluene recovery device according to claim 1, the toluene recovery device also includes PLC and for detecting
The temperature sensor of gas temperature at condenser gas outlet, PLC control the circulation rate of condenser refrigerant by temperature sensor.
10. a kind of toluene recovery device according to claim 1, it is characterised in that the toluene recovery device also includes
PLC and the pressure sensor for detecting air pressure in liquid separation tank, liquid separation tank are provided with stomata, and PLC is controlled by pressure sensor
The opening and closing of stomata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667070.6A CN107501029A (en) | 2017-08-07 | 2017-08-07 | A kind of toluene recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710667070.6A CN107501029A (en) | 2017-08-07 | 2017-08-07 | A kind of toluene recovery device |
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| Publication Number | Publication Date |
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| CN107501029A true CN107501029A (en) | 2017-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710667070.6A Pending CN107501029A (en) | 2017-08-07 | 2017-08-07 | A kind of toluene recovery device |
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| CN (1) | CN107501029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117470621A (en) * | 2023-10-31 | 2024-01-30 | 连云港石化有限公司 | Detection device and detection process for organic matters in water |
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|---|---|---|---|---|
| CN1148993A (en) * | 1995-10-24 | 1997-05-07 | 永济电机厂 | Comprehensive purifying apparatus for waste acetone and toluene solvant |
| CN102826702A (en) * | 2012-08-30 | 2012-12-19 | 宁夏宝塔石化集团有限公司 | Method for removing a small amount of benzene or toluene in benzene and methanol alkylation reaction process water |
| CN203400518U (en) * | 2013-07-25 | 2014-01-22 | 浙江科泓化工有限公司 | Toluene recycling and rectifying device |
| CN105693686A (en) * | 2016-03-10 | 2016-06-22 | 天津大学 | Reactive distillation method and device for 4EMD (4-ethyl-2-methyl-1,3-dioxolame) production |
-
2017
- 2017-08-07 CN CN201710667070.6A patent/CN107501029A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1148993A (en) * | 1995-10-24 | 1997-05-07 | 永济电机厂 | Comprehensive purifying apparatus for waste acetone and toluene solvant |
| CN102826702A (en) * | 2012-08-30 | 2012-12-19 | 宁夏宝塔石化集团有限公司 | Method for removing a small amount of benzene or toluene in benzene and methanol alkylation reaction process water |
| CN203400518U (en) * | 2013-07-25 | 2014-01-22 | 浙江科泓化工有限公司 | Toluene recycling and rectifying device |
| CN105693686A (en) * | 2016-03-10 | 2016-06-22 | 天津大学 | Reactive distillation method and device for 4EMD (4-ethyl-2-methyl-1,3-dioxolame) production |
Non-Patent Citations (1)
| Title |
|---|
| 刘金海: "苯酚-水混合物的共沸精馏分离", 《齐鲁石油化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117470621A (en) * | 2023-10-31 | 2024-01-30 | 连云港石化有限公司 | Detection device and detection process for organic matters in water |
| CN117470621B (en) * | 2023-10-31 | 2024-06-04 | 连云港石化有限公司 | Detection device and detection process for organic matters in water |
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Application publication date: 20171222 |