CN206204180U - A kind of system that benzene is produced with coal and acetylene - Google Patents
A kind of system that benzene is produced with coal and acetylene Download PDFInfo
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- CN206204180U CN206204180U CN201620794303.XU CN201620794303U CN206204180U CN 206204180 U CN206204180 U CN 206204180U CN 201620794303 U CN201620794303 U CN 201620794303U CN 206204180 U CN206204180 U CN 206204180U
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Abstract
The utility model discloses a kind of system that benzene is produced with coal and acetylene.The system includes revolving bed pyrolysis reactor, acetylene storage device, cooling device and benzene separator；Revolving bed pyrolysis reactor includes feed zone, preheating zone, reaction zone and discharge zone, and feed zone is provided with charging aperture, and reaction zone is provided with acetylene entrance and pyrolysis oil gas vent, and discharge zone is provided with discharging opening；Acetylene storage device is provided with acetylene outlet, and acetylene outlet is connected with acetylene entrance；Cooling device is provided with pyrolysis oil gas entrance and tar outlet, and pyrolysis oil gas entrance is connected with pyrolysis oil gas vent；Benzene separator is provided with tar entrance and benzene outlet, and tar entrance is connected with tar outlet.System provided by the utility model has the advantages that the small, technological process of investment is simple, good in economic efficiency.
Description
Technical field
The utility model belongs to technical field of coal chemical industry, and in particular to a kind of system that benzene is produced with coal and acetylene.
Background technology
Benzene is a kind of important Organic Chemicals, with quite varied industrial use.Benzene is mainly derived from oil
Work and Coal Chemical Industry, wherein petrochemical industry can be straight by catalytic reforming, ethylene production byproduct pyrolysis gasoline hydrogenation, methane
The technology benzene such as switching through.Catalytic reforming and drippolene benzene are all high-temperature reaction process, and technique is relatively complicated, flow
Long, energy consumption is big, and reforming catalyst price is sufficiently expensive；Methane direct conversion is using zeolite catalyst Mo/HZSM-5 in nothing
Catalytic reaction is carried out under the conditions of oxygen, 700 DEG C of reaction temperature, is strong endothermic reaction, under actual operating condition, catalyst life compared with
Short, the technique is so far also in further investigation.Coal Chemical Industry mostlys come from the accessory substance during coking of coal, in the coal tar of generation
Benzene is extracted in oil and gas.
With developing rapidly for China organic chemical industry industry, market increases the demand of benzene, due to domestic petroleum resource
Shortage limit the further raising of petroleum chemical industry benzene yield, therefore have to the research of coal chemical industry benzene extensive
Space.
During pyrolysis of coal, its inside reactor is that the pyrolytic carbon produced after hot environment, and pyrolysis of coal can be as acetylene
The catalyst of reaction generation benzene.Therefore, environment during pyrolysis of coal is especially suitable for acetylene and reacts generation benzene.
The content of the invention
The utility model aims to provide the system that a kind of coal and acetylene produce benzene.
A kind of system that benzene is produced with coal and acetylene, it includes revolving bed pyrolysis reactor, acetylene storage device, cooling dress
Put and benzene separator；
The revolving bed pyrolysis reactor include feed zone, preheating zone, reaction zone and discharge zone, the feed zone be provided with into
Material mouth, the reaction zone is provided with acetylene entrance and pyrolysis oil gas vent, and the discharge zone is provided with discharging opening；
The acetylene storage device is provided with acetylene outlet, and the acetylene outlet is connected with the acetylene entrance；
The cooling device is provided with pyrolysis oil gas entrance and tar outlet, the pyrolysis oil gas entrance and the pyrolysis oil gas
Outlet is connected；
The benzene separator is provided with tar entrance and benzene outlet, and the tar entrance is connected with the tar outlet.
In an embodiment of the present utility model, the acetylene entrance is arranged on the reaction zone bottom surface.
In an embodiment of the present utility model, the pyrolysis oil gas vent is arranged on the side wall of the reaction zone
On, and the heater positioned at the reaction zone lower section.
In an embodiment of the present utility model, the heater of the preheating zone and the reaction zone is heat accumulating type
Radiant tube burner, the regenerative radiant tube burner is arranged on the lateral wall of the revolving bed pyrolysis reactor, and it is high
Degree is more than bed depth, and radiant tube burner surface spraying ceramic coating.
In the embodiment of the present utility model, the system also includes drawing mechanism, and the drawing mechanism enters
Mouth is connected with the discharging opening of the revolving bed pyrolysis reactor.
In an embodiment of the present utility model, the flitch of the reaction zone uses gas distribution grid.
In the embodiment of the present utility model, the system also includes feed arrangement, and the feed arrangement goes out
Mouth is connected with the charging aperture of the revolving bed pyrolysis reactor.
System provided by the utility model, acetylene is passed through in revolving bed pyrolysis reactor, in the first that pyrolysis of coal is produced
In alkane, hydrogen and carbon dioxide atmosphere, and under the catalytic action of the pyrolytic carbon that pyrolysis of coal is produced, acetylene reaction generation benzene.
System provided by the utility model is by pyrolysis of coal together with the reaction bonded of acetylene benzene, and pyrolysis of coal is anti-for acetylene benzene
Required condition should be provided, energy consumption has been saved and has been also saved investment and operating cost, and technological process is also very simple.
Additionally, system provided by the utility model also improves the content of aromatic hydrocarbons in coal tar, make the coal tar of gained
Quality get a promotion, it will be apparent that improve the economic worth of coal tar.
Brief description of the drawings
Fig. 1 is a kind of structural representation of system that benzene is produced with coal and acetylene of the utility model embodiment.
Fig. 2 is a kind of structural representation of revolving bed pyrolysis reactor of the utility model embodiment.
Specific embodiment
Below in conjunction with drawings and Examples, specific embodiment of the present utility model is described in more details, with
Just better understood when the advantage of scheme of the present utility model and its various aspects.However, specific implementations described below side
Formula and embodiment are only descriptive purposes, rather than to limitation of the present utility model.
The utility model provide firstly the system that a kind of coal and acetylene produce benzene, and the system includes feed arrangement, rotation
Rotated bed pyrolysis reactor, acetylene storage device, drawing mechanism, cooling device and benzene separator.
Revolving bed pyrolysis reactor is the core apparatus of the system, is the reactor of pyrolysis of coal, acetylene reaction.Such as Fig. 2 institutes
Show, the profile of revolving bed pyrolysis reactor is circle, and it includes feed zone, preheating zone, reaction zone and discharge zone.Wherein, feed
Area is provided with charging aperture, and reaction zone is provided with acetylene (C2H2) entrance and pyrolysis oil gas vent, discharge zone is provided with discharging opening.
Acetylene entrance can be arranged on any position of reaction zone, and its optimal position is on the bottom surface of reaction zone.In phase
Under same pressure, the density of the density less than air of acetylene, acetylene enters reaction zone from the bottom up, can produce pyrolysis with pyrolysis of coal
Charcoal (C) is sufficiently contacted, and the on-condensible gas (methane (CH produced in pyrolysis of coal4), hydrogen (H2), carbon dioxide (CO2) etc.)
Generation benzene is reacted in atmosphere.
Being pyrolyzed the outlet of oil gas can be arranged on the optional position of reaction zone, and its optimal position is the side wall of reaction zone
On, and the heater positioned at reaction zone lower section.So pyrolysis oil gas is without the high-temperature region where heater, it is to avoid oil
There is second pyrolysis in gas, be conducive to improving pyrolysis oil yield.
The heater of preheating zone and reaction zone need not be particularly limited to, and its optimal selection is burnt for heat accumulation type radiant tube
Device.Regenerative radiant tube burner can produce equally distributed temperature field, make pyrolysis material thermally equivalent, and can realize pyrolysis
Gas produces the isolation of flue gas with heater, simplifies subsequent process flow.Regenerative radiant tube burner is arranged on revolving bed
On the lateral wall of pyrolysis reactor, it is highly more than bed depth, and the surface spraying of regenerative radiant tube burner has pottery
Porcelain coating.The quantity of regenerative radiant tube burner is not limited, it is necessary to the temperature according to required for different zones is configured.
The flitch of reaction zone need not be particularly limited to, and its optimal selection is gas distribution grid.Can from gas distribution grid
It is more uniform to allow acetylene to be distributed in reaction zone, be conducive to improving its reaction effect.
The quantity of reaction zone can set multiple, to control different reaction temperatures.Revolving bed pyrolytic reaction shown in Fig. 2
Device is provided with two reaction zones.
The bottom of revolving bed pyrolysis reactor is provided with rotation machinery, rotates machinery and drives annular bottom surface to rotate, positioned at bottom surface
On material concomitant rotation, be heated by regional and be pyrolyzed.
The acetylene being passed through from acetylene entrance through gas distribution grid into flowing up after revolving bed pyrolysis reactor, with generation
Pyrolytic carbon contact, under the catalytic action of pyrolytic carbon, acetylene reacts, generate benzene.
The reaction of acetylene generation benzene needs just be carried out under conditions of high temperature and catalyst are present, revolving bed pyrolytic reaction
In pyrolyzing coal, the pyrolytic carbon produced after its internal exactly hot environment, and pyrolysis of coal can give birth to device as acetylene reaction
Into the catalyst of benzene.
While benzene is generated, itself can also decompose acetylene reaction：
Above-mentioned reaction is reversible reaction.Contain methane, hydrogen in the on-condensible gas produced after pyrolysis of coal, therefore can be certain
Suppress acetylene in degree to decompose reaction.Additionally, also containing carbon dioxide, titanium dioxide in the on-condensible gas produced after pyrolysis of coal
Carbon can not only adjust the partial pressure of methane, and carbon dioxide also has the function that carbon distribution is eliminated with the charcoal reaction for decomposing generation.
Feed arrangement is provided with entrance and exit, and the outlet of feed arrangement is connected with the charging aperture of revolving bed pyrolysis reactor.
Feed arrangement is used in coal feeding revolving bed pyrolysis reactor.
Acetylene storage device is provided with acetylene outlet, and acetylene outlet is connected with acetylene entrance.Acetylene storage device is used to be rotation
Rotated bed pyrolysis reactor provides acetylene.
Drawing mechanism is provided with entrance and exit, and the entrance of drawing mechanism is connected with the discharging opening of revolving bed pyrolysis reactor.
The pyrolytic carbon that drawing mechanism is used to be produced after pyrolysis of coal sends out revolving bed pyrolysis reactor.
Cooling device is provided with pyrolysis oil gas entrance and tar outlet, and pyrolysis oil gas entrance is connected with pyrolysis oil gas vent.It is cold
But device is used for separating tar and pyrolysis gas.
Benzene separator is provided with tar entrance and benzene outlet, and tar entrance is connected with tar outlet.Benzene separator is used for
Benzene is extracted from tar.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing summary.Method of testing used by following embodiments is
Method of testing commonly used in the industry.
Embodiment 1
The present embodiment provides a kind of system that benzene is produced with coal and acetylene.
As shown in figure 1, the system include feed arrangement, revolving bed pyrolysis reactor, drawing mechanism, acetylene storage device,
Cooling device and benzene separator.
As shown in Fig. 2 the profile of revolving bed pyrolysis reactor is circle, it includes feed zone, preheating zone, reaction zone and goes out
Material area.Wherein, feed zone is provided with charging aperture, and reaction zone is provided with acetylene entrance and pyrolysis oil gas vent, and discharge zone is provided with discharging opening.
Acetylene entrance is arranged on reaction zone bottom surface.Pyrolysis oil gas vent is arranged on the side wall of reaction zone, and positioned at anti-
Answer the lower section of the heater in area.The heater of preheating zone and reaction zone is regenerative radiant tube burner, heat accumulating type radiation
Pipe burner is arranged on the lateral wall of revolving bed pyrolysis reactor, and it is highly more than bed depth, and radiant tube burner
Surface spraying ceramic coating.The flitch of reaction zone uses gas distribution grid.The bottom of revolving bed pyrolysis reactor is provided with rotating machine
Tool.
Feed arrangement is connected with charging aperture, for by coal feeding revolving bed pyrolysis reactor.
Drawing mechanism is connected with discharging opening, and the pyrolytic carbon for will be produced after pyrolysis of coal sends out revolving bed pyrolysis reactor.
Acetylene storage device is provided with acetylene outlet, and acetylene outlet is connected with acetylene entrance.Acetylene storage device is used to store
Acetylene, and by acetylene feeding revolving bed pyrolysis reactor.
Cooling device is provided with pyrolysis oil gas entrance and tar outlet, and pyrolysis oil gas entrance is connected with pyrolysis oil gas vent.It is cold
But device is used for separating tar and pyrolysis gas.
Benzene separator is provided with tar entrance and benzene outlet, and tar entrance is connected with tar outlet.Benzene separator is used for
Extract benzene.
Embodiment 2
The present embodiment produces benzene using the system that embodiment 1 is provided.Coal used is lignite, and the preparation method is specific such as
Under：
Coal is crushed, dried first.It is 10-30mm coals to choose 1 ton of particle diameter, and it is 600 DEG C to control two area's temperature of reaction.Coal
Enter revolving bed pyrolysis reactor through feed arrangement, be evenly distributed on rotary drill reactor bottom surface, it is preheated with the rotation of bottom surface
Area, one area of reaction and 2nd area of reaction are heated to 600 DEG C and carry out pyrolytic reaction, generation pyrolysis oil gas (including on-condensible gas and tar)
And pyrolytic carbon.In the case where acetylene gas is not passed through, the content such as table 1 of pyrolysis gas (on-condensible gas) each component that pyrolysis of coal is obtained
It is shown.The volume of the on-condensible gas of generation is 424.8m3。
Then, acetylene is passed through toward revolving bed pyrolysis reactor, the amount of the acetylene being passed through is 34m3.Acetylene was being flowed up
The pyrolytic carbon contact of Cheng Zhongyu generations, under the catalytic action of pyrolytic carbon, further promotes acetylene reaction generation benzene.Contain benzene
Pyrolysis oil gas self-alignment experiences cooling device and obtains tar, pyrolysis gas afterwards in the pyrolysis oil gas vent discharge for reacting two area side walls.
The pyrolytic carbon that pyrolysis is obtained is discharged through drawing mechanism, and pyrolysis gas collect standby after further processing, and tar is further fed into benzene
In separator, benzene is obtained after separation.The remaining tar without benzene is standby after collecting.
After being passed through acetylene, increased benzene amount is 1.3 times of the benzene that coal pyrolyzing is produced.
Embodiment 3
The present embodiment produces benzene using the system that embodiment 1 is provided.Coal used as the coal used by embodiment 2,
The producing process is specific as follows：
Coal is crushed, dried first.It is 10-30mm coals to choose 1 ton of particle diameter, and it is 700 DEG C to control two area's temperature of reaction.Pressure
The coal for being made type enters revolving bed pyrolysis reactor through feed arrangement, is evenly distributed on rotary drill reactor bottom surface, with bottom surface
Rotate, preheated area, one area of reaction and 2nd area of reaction are heated to 700 DEG C and carry out pyrolytic reaction, generation pyrolysis oil gas (including do not coagulate
Gas and tar) and pyrolytic carbon.In the case where acetylene gas is not passed through, pyrolysis gas (on-condensible gas) each component that pyrolysis of coal is obtained
Content it is as shown in table 1.The volume of the on-condensible gas of generation is 743.6m3。
Then, acetylene is passed through toward revolving bed pyrolysis reactor, the amount of the acetylene being passed through is 74.36m3.Acetylene is to upstream
Pyrolytic carbon during dynamic with generation is contacted, and under the catalytic action of pyrolytic carbon, further promotes acetylene reaction generation benzene.Contain
The pyrolysis oil gas self-alignment of benzene experiences cooling device and obtains tar, heat afterwards in the pyrolysis oil gas vent discharge for reacting two area side walls
Vent one's spleen.The pyrolytic carbon that pyrolysis is obtained is discharged through drawing mechanism, and pyrolysis gas collect standby after further processing, and tar is further sent
Enter in benzene separator, benzene is obtained after separation.The remaining tar without benzene is standby after collecting.
After being passed through acetylene, increased benzene amount is 2 times of the benzene that coal pyrolyzing is produced.
The content of each component in the pyrolysis gas of table 1
To sum up, it is known that system provided by the utility model, acetylene is passed through in revolving bed pyrolysis reactor,
In methane, hydrogen and carbon dioxide atmosphere that pyrolysis of coal is produced, and under the catalytic action of the pyrolytic carbon that pyrolysis of coal is produced, second
Alkyne reaction generates benzene.System provided by the utility model by pyrolysis of coal together with the reaction bonded of acetylene benzene, pyrolysis of coal
Condition for needed for the reaction of acetylene benzene is provided, has saved energy consumption and has also saved investment and operating cost, and technique stream
Journey is also very simple.
Additionally, system provided by the utility model also improves the content of aromatic hydrocarbons in coal tar, make the coal tar of gained
Quality get a promotion, so as to improve the economic worth of coal tar.
It should be noted that each embodiment above by reference to described by accompanying drawing is only used to illustrate the utility model rather than limit
Scope of the present utility model is made, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out to the utility model on the premise of enclosing or equivalent, all should cover within the scope of the utility model.
Additionally, unless stated otherwise, then all or part of of any embodiment can be with reference to the whole or of any other embodiment
Part uses.
Claims (5)
1. a kind of system that benzene is produced with coal and acetylene, it is characterised in that it includes revolving bed pyrolysis reactor, acetylene storage dress
Put, cooling device and benzene separator；
The revolving bed pyrolysis reactor includes feed zone, preheating zone, reaction zone and discharge zone, and the feed zone is provided with charging
Mouthful, the reaction zone is provided with acetylene entrance and pyrolysis oil gas vent, and the discharge zone is provided with discharging opening；The pyrolysis oil gas vent
Be arranged on the side wall of the reaction zone, and the heater positioned at the reaction zone lower section；
The acetylene storage device is provided with acetylene outlet, and the acetylene outlet is connected with the acetylene entrance；
The cooling device is provided with pyrolysis oil gas entrance and tar outlet, the pyrolysis oil gas entrance and the pyrolysis oil gas vent
It is connected；
The benzene separator is provided with tar entrance and benzene outlet, and the tar entrance is connected with the tar outlet.
2. system according to claim 1, it is characterised in that the acetylene entrance is arranged on the reaction zone bottom surface.
3. system according to claim 1, it is characterised in that the heater of the preheating zone and the reaction zone is to store
Hot type radiant tube burner, the regenerative radiant tube burner is arranged on the lateral wall of the revolving bed pyrolysis reactor,
It is highly more than bed depth, and radiant tube burner surface spraying has ceramic coating.
4. system according to claim 1, it is characterised in that the system also includes drawing mechanism, the drawing mechanism
Entrance be connected with the discharging opening of the revolving bed pyrolysis reactor.
5. system according to claim 1, it is characterised in that the system also includes feed arrangement, the feed arrangement
Outlet be connected with the charging aperture of the revolving bed pyrolysis reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620794303.XU CN206204180U (en) | 2016-07-26 | 2016-07-26 | A kind of system that benzene is produced with coal and acetylene |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620794303.XU CN206204180U (en) | 2016-07-26 | 2016-07-26 | A kind of system that benzene is produced with coal and acetylene |
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| CN206204180U true CN206204180U (en) | 2017-05-31 |
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| CN201620794303.XU Expired - Fee Related CN206204180U (en) | 2016-07-26 | 2016-07-26 | A kind of system that benzene is produced with coal and acetylene |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045807A (en) * | 2016-07-26 | 2016-10-26 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing benzene from biomass and acetylene |
| CN107138100A (en) * | 2017-07-03 | 2017-09-08 | 北京华福工程有限公司 | A kind of apparatus and method that light aromatics is prepared by acetylene |
-
2016
- 2016-07-26 CN CN201620794303.XU patent/CN206204180U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045807A (en) * | 2016-07-26 | 2016-10-26 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing benzene from biomass and acetylene |
| CN107138100A (en) * | 2017-07-03 | 2017-09-08 | 北京华福工程有限公司 | A kind of apparatus and method that light aromatics is prepared by acetylene |
| CN107138100B (en) * | 2017-07-03 | 2020-05-22 | 北京华福工程有限公司 | Device and method for preparing light aromatic hydrocarbon from acetylene |
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Address after: 102200 Beijing City, Changping District science and Technology Park Chang Huai Lu No. 155 Patentee after: Shenwu Technology Group Co.,Ltd. Address before: 102200 Beijing City, Changping District science and Technology Park Chang Huai Lu No. 155 Patentee before: BEIJING SHENWU ENVIRONMENT AND ENERGY TECHNOLOGY Co.,Ltd. |
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