CN208883747U - The ethamine production system of boiler fly ash removal of impurities is provided in a kind of utilization for oneself - Google Patents
The ethamine production system of boiler fly ash removal of impurities is provided in a kind of utilization for oneself Download PDFInfo
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Abstract
The ethamine production system that boiler fly ash removal of impurities is provided in a kind of utilization of the utility model for oneself is made of fixed bed reactors (1), deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol recovery tower (6), extraction tower (7), triethylamine tower (8), mixing and absorption slot (9) and subsider (10).It is produced using the system of the utility model for ethamine.Using the impurity in the Powder ash adsorption waste water for providing boiler for oneself, the flyash after adsorption saturation goes boiler to burn, for having preferable economy with the ethamine manufacturing enterprise for providing boiler for oneself；Waste water after imurity-removal is recycled back to ethamine tower and extraction tower can further remove the impurity in production system, is conducive to the purity for improving product.
Description
Technical field
The invention belongs to low-carbon fatty amine production fields, and in particular to the ethamine of boiler fly ash removal of impurities is provided in a kind of utilization for oneself
Production system.
Background technique
Ethamine product (including ethamine, diethylamine and triethylamine), the wherein maximum component of the triethylamine market demand.Ethamine
Synthetic route has chloroethanes amine-decomposing method, nitrile or nitro compounds reduction method and three synthetic routes of alcohol catalysis amination method, wherein ethyl alcohol
Study on Catalytic Amination of Alcohols method is using widest a kind of, principle: feed ethanol and liquefied ammonia are squeezed into middle pressure by alcohol pump and ammonia pump and are reacted
Furnace is converted into gas by liquid, initial temperature is reacted required for being heated to gas, in the case where facing hydrogen state, by urging
The catalysis of agent, according to the activity difference of molecular structure free radical, ethyl alcohol dehydrogenation first generates acetaldehyde, and the oxygen atom of acetaldehyde is by ammonia
Base replaces, and generates sub- ethamine, sub- ethamine belongs to the intermediate product of labile state, by being hydrogenated to monoethyl amine, monoethyl amine amino
On hydrogen atom substitution reaction is occurred by acetyl group again, generate diethylamine and triethylamine.
The reaction mechanism mechanism of reaction is as follows:
C2H5OH→CH3CHO+H2
CH3CHO+NH3→CH3CHNH+H2O
CH3CHNH+H2→C2H5NH2
CH3CHO +C2H5NH2→C2H5NCHCH3+ H2O
C2H5NCHCH+H2→(C2H5)2NH
CH3CHO +(C2H5)2NH +H2→(C2H5)3N+H2O
Due in alcohol catalysis aminating reaction product between ethamine, diethylamine and triethylamine there are Chemical thermodynamic equilibrium,
Thus the ratio of three kinds of ethamine is fixed in reaction product, and it is triethylamine that the market demand is maximum, usually by part ethamine, diethyl
Amine Returning reactor is balanced again to improve the ratio of triethylamine in product, and process flow is as shown in Fig. 1.Triethylamine production
Use in the process mass fraction for 90 ~ 93% industrial alcohol as raw material can be brought into production system a large amount of water, secondly from
It can be seen that the synthetic water of a certain amount can be generated in the reaction mechanism mechanism of reaction, thus production system can exclude a large amount of water to maintain material
Balance is contained in the final waste water that production system is discharged due to that can generate impurity (mainly N- ethyl acetamide) in reaction process
There is the waste water of about 0.1% N- ethyl acetamide.Since amide is to the toxicity of biology and the associative behavior of amide and water, make
Conventional biochemical treatment and distillating method to handle these waste water more difficult, adverse effect is caused to environment.Furthermore impurity is simultaneously
Production system is not exclusively discharged by waste water, has also taken away a part in ethamine product, this leverages mentioning for product purity
Height, the purity of ethamine product is between 99.2 ~ 99.5% at present, if impurity product purity further can be discharged also from from waste water
It can be further improved.
Ethamine production plant needs to consume rectifying of a large amount of steam for product, thus is equipped with mostly and provides boiler for oneself, fires
Coal burning boiler can generate a large amount of flue flyash, and flue flyash has preferable characterization of adsorption.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of utilization for the above-mentioned state of the art to provide boiler compound for oneself
The ethamine production system of coal ash removal of impurities utilizes the impurity in the adsorptivity removing production system for the flyash for providing boiler for oneself.
It is that boiler fly ash removal of impurities is provided in a kind of utilization for oneself that the present invention, which solves technical solution used by above-mentioned technical problem,
Ethamine production system is by fixed bed reactors (1), deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol
Recovery tower (6), extraction tower (7), triethylamine tower (8), mixing and absorption slot (9) and subsider (10) are constituted；
The top of fixed bed reactors (1) is vaporizing chamber, lower part is fixed bed reaction section, and vaporizing chamber is equipped with ammonia import, second
Alcohol import and hydrogen inlet；Deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol recovery tower (6) and three
Ethamine tower (8) is rectifying column, is provided with feed inlet, overhead distillate mouth and tower bottoms outlet；Extraction tower (7) is filler extraction
Tower is taken, top is provided with light phase export and heavy phase import, bottom are provided with light phase import and heavy out；Mixing and absorption slot (9)
It is provided with water inlet, flyash import and slurry outlet；Subsider (10) is provided with slurry import, treated water outlet and saturation powder
Coal ash outlet；
The bottom of fixed bed reactors (1) is connected to by pipeline with the feed inlet of deammoniation tower (2)；The tower top of deammoniation tower (2)
The first and second pipelines that distillate mouth is divided into after being connected to by pipeline with the first threeway, the first pipeline are liquefied ammonia inlet tube, the
The ammonia inlet communication of two pipelines and the vaporizing chamber of fixed bed reactors (1)；The tower bottoms outlet of deammoniation tower (2) passes through pipeline and the
It is divided into the third and fourth pipeline after two threeways connection, third pipeline is connected to with the feed inlet of ethamine tower (3), the 4th pipeline and the
Be divided into the 5th and the 6th pipeline after three threeways connection, the heavy phase inlet communication of the 5th pipeline and extraction tower (7), the 6th pipeline and
The the 7th and the 8th pipeline is divided into after 4th threeway connection, the 7th pipeline is purification water discharge pipe, the 8th pipeline and subsider
(10) treated water outlet connection；The overhead distillate mouth of ethamine tower (3) is divided into the after being connected to by pipeline with the 5th threeway
Nine and the tenth pipeline, the 9th pipeline are ethamine discharge pipe, and the tenth pipeline is divided into the 11st and the tenth after being connected to the 6th threeway
Two pipelines, the 11st pipeline are divided into the 13rd and the 14th pipeline after being connected to the 7th threeway, the 13rd pipeline is industrial second
Alcohol inlet pipe, the 14th pipeline and fixed bed reactors (1) vaporizing chamber ethyl alcohol inlet communication, the 12nd pipeline and the eight or three
The the 15th and the 16th pipeline is divided into after leading to, the 15th pipeline is connected to the overhead distillate mouth of alcohol recovery tower (6), the
16 pipelines are divided into the 17th and the 18th pipeline after being connected to the 9th threeway, the 17th pipeline is diethylamine discharge pipe, the
18 pipelines are connected to the overhead distillate mouth of diethylamine tower (4)；The tower bottoms outlet of ethamine tower (3) passes through pipeline and the 13rd
The the 19th and the 20th pipeline is divided into after leading to, the 19th pipeline is connected to the feed inlet of diethylamine tower (4), the 20th pipe
Road is connected to the overhead distillate mouth of triethylamine tower (8)；The tower bottoms outlet of diethylamine tower (4) passes through pipeline and dealcoholysis water tower
(5) feed inlet connection, the overhead distillate mouth of dealcoholysis water tower (5) are connected to the feed inlet of alcohol recovery tower (6) by pipeline, are taken off
The tower bottoms outlet of alcohol water tower (5) passes through the light phase inlet communication of pipeline and extraction tower (7)；The tower bottoms of alcohol recovery tower (6) goes out
Is divided into the 21st and the 22nd pipeline after mouthful being connected to by pipeline with the 11st threeway, the 21st pipeline and with extraction
The heavy out of tower (7) is connected to, and the 22nd pipeline is connected to the water inlet of mixing and absorption slot (9)；The light phase of extraction tower (7) goes out
Mouth is connected to by pipeline with the feed inlet of triethylamine tower (8), and the tower bottoms outlet of triethylamine tower (8) is triethylamine outlet；It is mixed
The flyash import for closing adsorption tank (9) is the feed inlet of boiler fly ash, and the slurry outlet of mixing and absorption slot (9) passes through pipeline
Boiler is removed in saturation flyash outlet with the slurry inlet communication of subsider (10), subsider (10).
As an improvement, the extraction tower (7) is pulse extraction column.
The course of work for carrying out ethamine production using system of the invention is as follows: the liquid conveyed from liquefied ammonia inlet tube
Ammonia enters vaporizing chamber after mixing with the recycling ammonia from deammoniation tower (2), the industrial alcohol conveyed from industrial alcohol inlet pipe
(mass content of ethyl alcohol is 90 ~ 93%) and the circulation ethamine from ethamine tower (3), the circulation diethyl from diethylamine tower (4)
Enter vaporizing chamber after amine, the recycling ethyl alcohol mixing from alcohol recovery tower (6), hydrogen enters vaporizing chamber for adjusting from hydrogen inlet
Fixed bed reactors (1) interior pressure is to 0.8 ~ 1.5 MPa.Reaction temperature in fixed bed reactors (1) is controlled 150 ~ 200
℃；Product is obtained in the bottom of fixed bed reactors (1), the mass content of ethamine is the quality of 15 ~ 20%, diethylamine in product
Content be the mass content of 25 ~ 35%, triethylamine be 20 ~ 25%, the mass content of impurity N- ethyl acetamide is 0.5%, remaining is
Unreacted raw material.Product from fixed bed reactors (1) bottom enter deammoniation tower (2) carry out rectifying, tower top obtain recycling ammonia,
Tower reactor obtains deamination tower bottoms；Recycling ammonia goes the first threeway；Deamination tower bottoms is mixed with the purified water from subsider (10)
Enter ethamine tower (3) afterwards and carry out rectifying, tower top obtains ethamine, tower reactor obtains de- ethamine tower bottoms, and a part of ethamine, which is used as, to be produced
Product, another part successively go the 7th threeway through the 5th and the 6th threeway, take off ethamine tower bottoms and come from the diethyl of triethylamine tower (8)
Enter diethylamine tower (4) after the mixing of the mixed liquor of amine and triethylamine and carry out rectifying, tower top obtains diethylamine, tower reactor obtains de- diethyl
A part of amine tower bottoms, diethylamine successively goes the 7th threeway through the nine, the 8th and the 6th threeway as product, another part；
De- diethylamine tower bottoms enters dealcoholysis water tower (5) and carries out rectifying, and tower top obtains ethanol water mixture, tower reactor obtains dealcoholysis water tower kettle
Liquid；Dealcoholysis water tower kettle liquid enters behind the bottoms of extraction tower (7) to floating；Ethanol water mixture enters alcohol recovery tower (6) and carries out essence
It evaporates, tower top obtains recycling ethyl alcohol, tower reactor obtains waste water, and recycling ethyl alcohol successively goes the 7th threeway after the eight, the 6th threeways；It is useless
Water is mixed to get composite waste with the extraction water from extraction tower (7), and composite waste enters mixing and absorption slot (9)；From providing for oneself
The flyash of boiler also enters mixing and absorption slot (9)；Flyash under the action of stirring in mixing and absorption slot (9) with mix it is useless
Water comes into full contact with and adsorbs the impurity in composite waste, obtains slurry；Slurry enters subsider (10) sedimentation, has adsorbed impurity
Flyash be deposited to that bottom obtains the flyash of adsorption saturation, the clear liquid on subsider (10) top is purified water；Absorption is full
The flyash of sum goes boiler to burn；The purified water is divided into three parts, and first part's import enters after extraction tower (7) down
Heavy, second part enters the second threeway, and Part III goes biochemistry pool to handle；In extraction tower 7, the dealcoholysis water tower kettle liquid of floating and
First part's purified water realization of sinking extracts, the impurity in dealcoholysis water tower kettle liquid is extracted in first part's purified water, tower
Top obtains raffinate, tower reactor obtains extraction water, and raffinate enters triethylamine tower (8) and carries out rectifying, and tower top obtains diethylamine and three
The mixed liquor of ethamine, tower reactor obtain triethylamine product.
Compared with the prior art, the advantages of the present invention are as follows: (1) using miscellaneous in the Powder ash adsorption waste water of providing boiler
Matter, the flyash after adsorption saturation go boiler to burn, preferable economical for having with the ethamine manufacturing enterprise for providing boiler for oneself
Property；(2) waste water after imurity-removal is recycled back to ethamine tower and extraction tower can further remove impurity in production system, favorably
In the purity for improving product.
Detailed description of the invention
Fig. 1 is the schematic diagram of traditional ethamine production system.
Fig. 2 is the schematic diagram for the ethamine production system that boiler fly ash removal of impurities is provided in a kind of utilization of the invention for oneself.
Wherein: 1 is fixed bed reactors, and 2 be deammoniation tower, and 3 be ethamine tower, and 4 be diethylamine tower, and 5 be dealcoholysis water tower, and 6 are
Alcohol recovery tower, 7 be extraction tower, and 8 be triethylamine tower, and 9 be mixing and absorption slot, and 10 be subsider.
Specific embodiment
With reference to the accompanying drawing 2, by embodiment, present invention is further described in detail.
Embodiment 1
A kind of utilization provide for oneself the ethamine production system of boiler fly ash removal of impurities by fixed bed reactors (1), deammoniation tower (2),
Ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol recovery tower (6), extraction tower (7), triethylamine tower (8), mixing and absorption
Slot (9) and subsider (10) are constituted；The top of fixed bed reactors (1) is vaporizing chamber, lower part is fixed bed reaction section, vaporizing chamber
Equipped with ammonia import, ethyl alcohol import and hydrogen inlet；Deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol
Recovery tower (6) and triethylamine tower (8) are rectifying column, are provided with feed inlet, overhead distillate mouth and tower bottoms outlet；Extraction
Tower (7) is packed extraction tower, and is pulse extraction column, and top is provided with light phase export and heavy phase import, bottom are provided with light phase
Import and heavy out；Mixing and absorption slot (9) is provided with water inlet, flyash import and slurry outlet；Subsider (10) setting
There are slurry import, treated water outlet and the outlet of saturation flyash；The bottom of fixed bed reactors (1) passes through pipeline and deammoniation tower
(2) feed inlet connection；The overhead distillate mouth of deammoniation tower (2) be divided into after being connected to by pipeline with the first threeway first and the
Two pipelines, the first pipeline are liquefied ammonia inlet tube, the ammonia inlet communication of the second pipeline and the vaporizing chamber of fixed bed reactors (1)；It is de-
The tower bottoms outlet of ammonia tower (2) is divided into the third and fourth pipeline, third pipeline and and second after being connected to by pipeline with the second threeway
The feed inlet of amine tower (3) is connected to, and the 4th pipeline is divided into the 5th and the 6th pipeline, the 5th pipeline and extraction after being connected to third threeway
The heavy phase inlet communication of tower (7) is taken, the 6th pipeline is divided into the 7th and the 8th pipeline after being connected to the 4th threeway, the 7th pipeline is
Water discharge pipe is purified, the 8th pipeline is connected to the treated water outlet of subsider (10)；The overhead distillate mouth of ethamine tower (3) passes through
Pipeline is divided into the 9th and the tenth pipeline after being connected to the 5th threeway, the 9th pipeline is ethamine discharge pipe, the tenth pipeline and the 6th
The the 11st and the 12nd pipeline is divided into after threeway connection, and the 11st pipeline is divided into the 13rd and the after being connected to the 7th threeway
14 pipelines, the 13rd pipeline be industrial alcohol inlet pipe, the 14th pipeline and fixed bed reactors (1) vaporizing chamber ethyl alcohol
Inlet communication, the 12nd pipeline are divided into the 15th and the 16th pipeline after being connected to the 8th threeway, the 15th pipeline and alcohol return
The overhead distillate mouth connection of tower (6) is received, the 16th pipeline is divided into the 17th and the 18th pipeline after being connected to the 9th threeway,
17th pipeline is diethylamine discharge pipe, and the 18th pipeline is connected to the overhead distillate mouth of diethylamine tower (4)；Ethamine tower (3)
Tower bottoms outlet by pipeline be connected to the tenth threeway after be divided into the 19th and the 20th pipeline, the 19th pipeline and diethyl
The feed inlet of amine tower (4) is connected to, and the 20th pipeline is connected to the overhead distillate mouth of triethylamine tower (8)；The tower of diethylamine tower (4)
Kettle liquid outlet be connected to by pipeline with the feed inlet of dealcoholysis water tower (5), the overhead distillate mouth of dealcoholysis water tower (5) pass through pipeline and
The feed inlet of alcohol recovery tower (6) is connected to, and the tower bottoms outlet of dealcoholysis water tower (5) passes through the light phase import of pipeline and extraction tower (7)
Connection；The tower bottoms outlet of alcohol recovery tower (6) is divided into the 21st and the 20th after being connected to by pipeline with the 11st threeway
Two pipelines, the 21st pipeline are connected to with the heavy out of extraction tower (7), the 22nd pipeline and mixing and absorption slot (9)
Water inlet connection；The light phase export of extraction tower (7) is connected to by pipeline with the feed inlet of triethylamine tower (8), triethylamine tower (8)
Tower bottoms outlet is triethylamine outlet；The flyash import of mixing and absorption slot (9) is the feed inlet of boiler fly ash, mixing
The slurry outlet of adsorption tank (9) passes through the slurry inlet communication of pipeline and subsider (10), the saturation flyash of subsider (10)
Boiler is removed in outlet.
Claims (2)
1. the ethamine production system that boiler fly ash removal of impurities is provided in a kind of utilization for oneself, it is characterised in that: the system is by fixed bed
Reactor (1), deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol recovery tower (6), extraction tower (7),
Triethylamine tower (8), mixing and absorption slot (9) and subsider (10) are constituted；
The top of the fixed bed reactors (1) is vaporizing chamber, lower part is fixed bed reaction section, and the vaporizing chamber is equipped with ammonia
Import, ethyl alcohol import and hydrogen inlet；The deammoniation tower (2), ethamine tower (3), diethylamine tower (4), dealcoholysis water tower (5), alcohol
Recovery tower (6) and triethylamine tower (8) are rectifying column, are provided with feed inlet, overhead distillate mouth and tower bottoms outlet；It is described
Extraction tower (7) be packed extraction tower, top is provided with light phase export and heavy phase import, bottom are provided with light phase import and heavy phase
Outlet；The mixing and absorption slot (9) is provided with water inlet, flyash import and slurry outlet；The subsider (10) is set
It is equipped with slurry import, treated water outlet and the outlet of saturation flyash；
The bottom of the fixed bed reactors (1) is connected to by pipeline with the feed inlet of deammoniation tower (2)；The deammoniation tower
(2) the first and second pipelines that overhead distillate mouth is divided into after being connected to by pipeline with the first threeway, first pipeline
For liquefied ammonia inlet tube, the ammonia inlet communication of the vaporizing chamber of second pipeline and fixed bed reactors (1)；The deammoniation tower
(2) tower bottoms outlet is divided into the third and fourth pipeline after being connected to by pipeline with the second threeway, the third pipeline and with
The feed inlet of ethamine tower (3) is connected to, and the 4th pipeline is divided into the 5th and the 6th pipeline after being connected to third threeway, described
The 5th pipeline and extraction tower (7) heavy phase inlet communication, the 6th pipeline is divided into the 7th after being connected to the 4th threeway
With the 8th pipeline, the 7th pipeline is purification water discharge pipe, and the purified water of the 8th pipeline and subsider (10) goes out
Mouth connection；The overhead distillate mouth of the ethamine tower (3) is divided into the 9th and the tenth after being connected to by pipeline with the 5th threeway
Pipeline, the 9th pipeline be ethamine discharge pipe, the tenth pipeline be divided into after being connected to the 6th threeway the 11st and
12nd pipeline, the 11st pipeline are divided into the 13rd and the 14th pipeline after being connected to the 7th threeway, and described
13 pipelines be industrial alcohol inlet pipe, the 14th pipeline and fixed bed reactors (1) vaporizing chamber ethyl alcohol import
Connection, the 12nd pipeline are divided into the 15th and the 16th pipeline, the 15th pipe after being connected to the 8th threeway
Road is connected to the overhead distillate mouth of alcohol recovery tower (6), and the 16th pipeline is divided into the tenth after being connected to the 9th threeway
Seven and the 18th pipeline, the 17th pipeline is diethylamine discharge pipe, the 18th pipeline and diethylamine tower (4)
The connection of overhead distillate mouth；The tower bottoms outlet of the ethamine tower (3) is divided into the after being connected to by pipeline with the tenth threeway
19 and the 20th pipeline, the 19th pipeline are connected to the feed inlet of diethylamine tower (4), the 20th pipeline with
The overhead distillate mouth of triethylamine tower (8) is connected to；The tower bottoms outlet of the diethylamine tower (4) passes through pipeline and dealcoholysis water tower
(5) feed inlet connection, the overhead distillate mouth of the dealcoholysis water tower (5) pass through the feed inlet of pipeline and alcohol recovery tower (6)
Connection, the tower bottoms outlet of the dealcoholysis water tower (5) pass through the light phase inlet communication of pipeline and extraction tower (7)；The alcohol
The tower bottoms outlet of recovery tower (6) is divided into the 21st and the 22nd pipeline after being connected to by pipeline with the 11st threeway,
21st pipeline is connected to the heavy out of extraction tower (7), the 22nd pipeline and mixing and absorption slot (9)
Water inlet connection；The light phase export of the extraction tower (7) is connected to by pipeline with the feed inlet of triethylamine tower (8), described
Triethylamine tower (8) tower bottoms outlet be triethylamine outlet；The flyash import of the mixing and absorption slot (9) is pot
The feed inlet of furnace flyash, the slurry outlet of the mixing and absorption slot (9) pass through the slurry import of pipeline and subsider (10)
Boiler is removed in the saturation flyash outlet of connection, the subsider (10).
2. system according to claim 1, it is characterised in that: the extraction tower (7) is pulse extraction column.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437079A (en) * | 2019-08-26 | 2019-11-12 | 山东齐鲁石化工程有限公司 | The process system of diethylamine and triethylamine is recycled from waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437079A (en) * | 2019-08-26 | 2019-11-12 | 山东齐鲁石化工程有限公司 | The process system of diethylamine and triethylamine is recycled from waste water |
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