CN104610174B - The comprehensive utilization device of gas-phase potential heat in a kind of nigrosine production process - Google Patents
The comprehensive utilization device of gas-phase potential heat in a kind of nigrosine production process Download PDFInfo
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- CN104610174B CN104610174B CN201510016466.5A CN201510016466A CN104610174B CN 104610174 B CN104610174 B CN 104610174B CN 201510016466 A CN201510016466 A CN 201510016466A CN 104610174 B CN104610174 B CN 104610174B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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Abstract
The present invention relates in a kind of nigrosine production process gas-phase potential heat comprehensive utilization device, including rectifying column, condenser and decker, wherein, lithium bromide chiller condenser is connected between described rectifying column and described condenser, described lithium bromide chiller condenser is provided with circulation water inlet and circulating water outlet.The gas-phase potential heat of the aniline steam and water vapour of effectively utilizes rectifying tower top of the present invention, lithium bromide chiller condenser is driven using low-pressure steam, produce 7 DEG C of water to use for each workshop refrigeration, 12 DEG C of water are converted into after each workshop reacting kettle jacketing or heat exchanger heat exchange, 7 DEG C of water circulations are produced after entering back into the condensation of lithium bromide chiller condenser to use, the heat of rectifying column tower top is made to obtain comprehensively effectively utilizing, economic benefit is obvious.Meanwhile, production technology can be returned as the raw material of nigrosine containing the aniline that aniline waste water is reclaimed Jing after rectifying column stripping, the condensation of lithium bromide chiller condenser, condenser condensation and decker layering and be recycled.
Description
Technical field
The present invention relates to technical field of dye, specifically, it is related to a kind of the comprehensive of gas-phase potential heat in nigrosine production process
Conjunction utilizes device.
Background technology
Nigrosine is a kind of chemistry dyestuff, and its strong coloring force, dispersibility are low, light absorptive is good, color steadiness high, therefore
Nigrosine can be used for plastic resin coloring, ink colorant, the coloring of wood decoration technique, leather, cotton, fiber crops dyeing and covering with paint, metal
The field such as color articles and pigment coloration.
The waste water containing aniline can be produced in nigrosine production process, if directly discharging very big to environmental hazard,
But also the wasting of resources can be caused.During aniline being extracted using rectifying column, can produce the benzene of uniform flow at the top of rectifying column
Amine steam and vapor, in terms of per hour, uniformly produce the aniline steam and vapor of 5310kg, the part gaseous mixture per hour
Phase component contains substantial amounts of gas-phase potential heat, and its top gaseous phase latent heat is calculated as follows：
It is known：100 DEG C of water vapour enthalpys are：2677KJ/Kg；The enthalpy of 100 DEG C of water is：417.5KJ/Kg；Aniline enthalpy of vaporization is：
487.335KJ/Kg。
The gas-phase potential heat that rectifying column tower top is produced per hour is：
Q always dive by the latent+Q water of latent=Q aniline
Q water is dived=0.84 × 5310 × (2677-417.5)=10078274KJ
Q aniline is dived=0.16 × 6000 × 487.335=414040KJ
Q always dive=10078274+414040=10492314KJ
That is overhead vapours phase transformation produces latent heat 10492314KJ per hour, converts into 249.8 ten thousand kilocalories.
It can be seen that, it is latent containing substantial amounts of gas phase in the mixing gaseous component of the aniline steam and vapor of rectifying column tower top generation
Heat, needs carry out cooling and process ability aniline recovery.Conventional method is lowered the temperature using circulating water cooling or aerial condenser, such as
Fig. 1 discloses a kind of schematic flow sheet of aniline distillation recovery device, and the waste water in storage tank 1 contains aniline 4% or so, and Jing chargings are pre-
Hot device 2 sends into the tower top of rectifying column 3 after preheating, live steam is directly entered from the bottom of towe of rectifying column 3, to carrying out containing aniline waste water
Stripping, bottom of towe waste water are discharged after feed preheater 2 reclaims preheating, send biochemical processing process.Tower top high concentration aniline steam
The condensed device of mixture 4 condenses to 40 DEG C or so into aniline, the decker 5 of water, and upper strata aqueous phase contains a small amount of aniline, sends back to
To reclaim aniline therein, lower floor's aniline can mutually be recycled for the circulation of storage tank 1 distillation.Substantial amounts of circulation can be not only wasted so
Water, and the partial heat also effectively cannot utilize, and so as to cause the waste of the partial heat, economic loss is larger.
" alcohol soluble nigrosine produces the recovery of Aniline "【Wang Shouheng, etc. alcohol soluble nigrosine production Aniline
Reclaim [J], 2009,30 (3)：48-50】A kind of improved device is have also been devised, as shown in Fig. 2 useless containing aniline containing 4% or so
Water elevator pump 11 is squeezed in pipe-line mixer, plus in Caustic soda and is adjusted to certain pH value, and Jing manganese sand filters 12 are filtered and removed
The storage tank 1 of neutralizer is entered after ferric chloride, the aniline water in storage tank 1 is boosted with aniline water pump and in the shell of feed preheater 2
Journey is preheating to after 90 DEG C by overhead vapours, sends into the charging of 3 tower top of rectifying column.Enter from 3 tower top of rectifying column steam out with waste water
Material heat exchange, uncooled steam are cooled to after 60 DEG C into air cooler 15, enter cold with the condensation liquid-phase mixing of feed preheater 2
Condenser 4 continues to be cooled to 40 DEG C or so, and the material after process send the decker 5 of aniline, water, and equally, upper strata aqueous phase sends storage back to
To reclaim aniline therein, lower floor's aniline is recycled in reaction process the circulation distillation of tank 1 as raw material.Rectifying column 3
Bottom of towe waste water is first sent to flash tank 14, then carries out vacuum flashing to saturation waste water in flash tank 14 using ejector 13, to return
Heat is received, is discharged after reclaiming preheating again.But tower top aniline steam is not made full use of using air cooler condensation
With the gas-phase potential heat of vapor, substantial amounts of heat is wasted so as to cause.
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 in a kind of nigrosine production process gas-phase potential heat comprehensive utilization device, the device
The gas-phase potential heat of the aniline steam and water vapour on effectively utilizes aniline distillation tower top, drives lithium bromide chiller cold using low-pressure steam
Condenser, produces cold water and uses for other workshop refrigeration, make the heat of aniline distillation tower tower top obtain comprehensively effectively utilizing, economical
Benefit is obvious.
To realize the purpose of the present invention, the present invention is adopted the following technical scheme that：
The comprehensive utilization device of gas-phase potential heat in a kind of nigrosine production process, including rectifying column, condenser and layering dress
Put, wherein, lithium bromide chiller condenser, described lithium bromide machine are connected between described rectifying column and described condenser
Group condenser is provided with circulation water inlet and circulating water outlet.
At present, it is latent containing substantial amounts of gas phase in the mixing gaseous component of the aniline steam and water vapour of rectifying column tower top generation
Heat, needs carry out cooling and process ability aniline recovery.Conventional method is lowered the temperature using circulating water cooling or aerial condenser, this
Sample can not only waste substantial amounts of recirculated water, and the partial heat also effectively cannot be utilized, so as to cause the partial heat
Waste, economic loss is larger.
The gas-phase potential heat of the aniline steam and water vapour of effectively utilizes rectifying tower top of the present invention, drives bromine using low-pressure steam
Change lithium train condenser, produce 7 DEG C of water and use for each workshop refrigeration, after each workshop reacting kettle jacketing or heat exchanger heat exchange
12 DEG C of water are converted into, and 7 DEG C of water circulations are produced after entering back into the condensation of lithium bromide chiller condenser and are used, make the heat of rectifying column tower top
Obtain comprehensively effectively utilizing, economic benefit is obvious.Meanwhile, the rectifying columns of Jing containing aniline waste water stripping, lithium bromide chiller condenser
The aniline reclaimed after condensation, condenser condensation and decker layering can return production technology circulation profit as the raw material of nigrosine
With.
In order to further improve condensation effect, condenser of the present invention includes the first condenser and the second condenser,
The first described condenser and the second condenser are connected in turn between described lithium bromide chiller condenser and decker.
Further, described lithium bromide chiller condenser is provided with aniline steam entry and aniline water out；It is described
Aniline steam entry be connected with the tower top of described rectifying column by pipeline；Described aniline water out by pipeline with
The first described condenser is connected.
It is preferred that, it is also connected with being provided with static mixer on the upside of described rectifying column.
Further, one end of described static mixer is provided with alkali liquor inlet and entrance containing aniline waste water, the other end with
It is connected on the upside of described rectifying column.
The original ph of the mother solution containing aniline waste water for acidity, aniline in the form of hydrochlorate, by rectifying column
One static mixer of upside connect setting, make the mother solution containing aniline waste water mixed into static mixer from entrance containing aniline waste water
Close, while add liquid caustic soda mixing to be neutralized by alkali liquor inlet in static mixer, after neutralization, aniline is by anilinechloride
Form be converted into aniline, consequently facilitating rectification.
In the present invention, steam inlet and condensation-water drain on the downside of described rectifying column, are provided with.
Steam inlet of the live steam from the downside of rectifying column is directly entered, to stripping containing aniline waste water, stripping heat exchange
The steam condensate for producing afterwards is flowed out from described condensation-water drain.
In the present invention, on described lithium bromide chiller condenser, the first described condenser and the second condenser respectively
It is connected with cooling water supply pipe and CWR.
Used as a preferred embodiment of the present invention, the bottom of towe of rectifying column of the present invention is connected with heat exchanger.
Contain heat from the waste water out of rectifying tower bottom, if directly sending sewage treatment plant to process, this part will be caused
The waste of heat.The present invention is collected by heat exchanger heat exchange in one heat exchanger of rectifying tower bottom connect setting, such bottom of towe waste water
Sewage treatment plant's process is entered back into after heat, so as to avoid the waste of bottom of towe waste water heat.
Comprehensive utilization device economic benefit using gas-phase potential heat in nigrosine production process provided by the present invention is obvious,
5310Kg low-pressure steams are produced per hour by rectifying tower top, replace 0.6MPa steam drives lithium bromide chiller to produce 7 DEG C of cool water quantities
For 500m3/ h, supply workshop refrigeration need.Steam expense per ton is calculated by 200 yuan, and whole year can steam saving expense about 7,650,000.
Compared with prior art, the invention has the advantages that：
(1) in nigrosine production process provided by the present invention, the comprehensive utilization device of gas-phase potential heat can effective process aniline
Black waste water from dyestuff, realizes the clean manufacturing of the resource and nigrosine of pollutant, and the removal of aniline can be reduced at biochemical sewage
For sewage farm, the murder by poisoning of reason, realizes that qualified discharge provides premise；Meanwhile, the aniline of recovery can be used as nigrosine
Raw material returns production technology and recycles；
(2) in nigrosine production process provided by the present invention gas-phase potential heat comprehensive utilization device effectively utilizes rectifying column
The aniline steam and the gas-phase potential heat of vapor on top, drives lithium bromide chiller condenser using low-pressure steam, produces 7 DEG C of water for each
Workshop refrigeration is used, and is converted into 12 DEG C of water, then Jing low-pressure steams drive after each workshop reacting kettle jacketing or heat exchanger heat exchange
Produce 7 DEG C of water circulations to use after dynamic lithium bromide chiller, make the heat of rectifying column tower top obtain comprehensively effectively utilizing, economic benefit
Substantially.
Description of the drawings
Structural representations of the Fig. 1 for the aniline distillation recovery device of prior art；
Structural representations of the Fig. 2 for the improved aniline distillation recovery device of prior art；
Fig. 3 is the comprehensive utilization device schematic diagram of gas-phase potential heat in nigrosine production process provided by the present invention；
Wherein, in accompanying drawing, each component names are as follows：
1 --- storage tank, 2 --- feed preheater, 3 --- rectifying column, 4 --- condenser, 41 --- the first condenser,
42 --- the second condenser, 5 --- decker, 6 --- lithium bromide chiller condenser, 7 --- static mixer, 8 --- change
Hot device, 9 --- cooling water supply pipe, 10 --- CWR, 11 --- elevator pump, 12 --- manganese sand filter,
13 --- ejector, 14 --- flash tank, 15 --- air cooler.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment one
As shown in figure 3, the present embodiment provides a kind of comprehensive utilization device of gas-phase potential heat in nigrosine production process, including
Rectifying column 3, condenser 4 and decker 5, wherein, bromination is connected between described rectifying column 3 and described condenser 4
Lithium train condenser 6, described lithium bromide chiller condenser 6 are provided with circulation water inlet and circulating water outlet.It is of the invention effective
Using the gas-phase potential heat of the aniline steam and water vapour of 3 tower top of rectifying column, lithium bromide chiller condenser is driven using low-pressure steam
6, produce 7 DEG C of water and use for each workshop refrigeration, 12 DEG C of water are converted into after each workshop reacting kettle jacketing or heat exchanger heat exchange,
Enter back into and after lithium bromide chiller condenser 6 is condensed, produce 7 DEG C of water circulations uses, making the heat of 3 tower top of rectifying column obtain synthesis has
Effect ground is utilized, and economic benefit is obvious.Meanwhile, the rectifying columns of Jing containing aniline waste water 3 are stripped, lithium bromide chiller condenser 6 is condensed, condensed
The aniline reclaimed after device 4 is condensed and decker 5 is layered can return production technology as the raw material of nigrosine and recycle.
In order to further improve condensation effect, condenser of the present invention 4 includes the first condenser 41 and the second condensation
Device 42, the first described condenser 41 and the second condenser 42 are connected to described lithium bromide chiller condenser 6 and layering in turn
Between device 5.
Described lithium bromide chiller condenser 6 is provided with aniline steam entry and aniline water out；Described aniline water
Steam inlet is connected with the tower top of described rectifying column 3 by pipeline；Described aniline water out by pipeline with it is described
First condenser 41 is connected.
The upside of described rectifying column 3 is connected with static mixer 7.
One end of described static mixer 7 is provided with alkali liquor inlet and entrance containing aniline waste water, the other end and described essence
The upside for evaporating tower 3 is connected.
The original ph of the mother solution containing aniline waste water for acidity, aniline in the form of hydrochlorate, by rectifying column 3
One static mixer 7 of upside connect setting, make the mother solution containing aniline waste water from entrance containing aniline waste water enter static mixer 7
Mixing, while add liquid caustic soda mixing to be neutralized by alkali liquor inlet in static mixer 7, after neutralization, aniline is by aniline hydrochloric acid
The form of salt is converted into aniline, consequently facilitating rectification.
The downside of described rectifying column 3 is provided with steam inlet and condensation-water drain.
Steam inlet of the live steam from the downside of rectifying column 3 is directly entered, to stripping containing aniline waste water, stripping heat exchange
The steam condensate for producing afterwards is flowed out from described condensation-water drain.
Respectively connect on described lithium bromide chiller condenser 6, the first described condenser 41 and the second condenser 42
It is provided with cooling water supply pipe 9 and CWR 10.
The course of work of the comprehensive utilization device of gas-phase potential heat in a kind of nigrosine production process that the present embodiment is provided
Comprise the steps：
(1) static mixing is entered from entrance containing aniline waste water and alkali liquor inlet by pipeline respectively containing aniline waste water and alkali liquor
Mix in device 7, after mixing, send into 3 tower top of rectifying column, while steam inlet of the steam from the downside of rectifying column 3 is directly entered, to containing
Aniline waste water is stripped, the waste water decontaminated water factory and office reason that 3 bottom of towe of rectifying column is produced after stripping；
(2) it is cold that the aniline and the gas phase mixture of water that 3 tower top of rectifying column is produced after stripping enters lithium bromide chiller condenser 6
It is solidifying；Be simultaneously from 12 DEG C of recirculated waters in other workshops and enter lithium bromide chiller condenser 6 by circulating water inlet, by aniline and
The gas-phase potential heat that the gas phase mixture of water is produced drives lithium bromide chiller condenser 6 to form 7 DEG C of recirculated waters from circulating water outlet stream
Go out and use for other workshop refrigeration, 12 DEG C of recirculated waters are converted into after each workshop reacting kettle jacketing or heat exchanger heat exchange and are led to again
Cross circulation water inlet to recycle into lithium bromide chiller condenser 6；
(3) gas phase mixture of the condensation of Jing lithium bromide chillers condenser 6 becomes liquid phase mixture, passes sequentially through the first condensation
Device 41 and the second condenser 42 are condensed, and are layered into decker 5 after condensation, and upper strata aqueous phase contains a small amount of aniline,
Static mixer 7 circulation is sent from entrance containing aniline waste water by pipeline carries out the operation of step (1)；Lower floor's aniline is mutually as conjunction
Raw material return production technology into nigrosine is recycled.
Embodiment two
The present embodiment is the further improvement to embodiment one, is the heat for reclaiming 3 bottom of towe of rectifying column waste water out,
One heat exchanger 8 of bottom of towe connect setting of described rectifying column 3.Contain heat from 3 bottom of towe of rectifying column waste water out, if directly
Send sewage treatment plant to process, the waste of this partial heat will be caused.The present invention in 3 bottom of towe connect setting of rectifying column, one heat exchanger 8,
So bottom of towe waste water is first passed through after heat is collected in the heat exchange of heat exchanger 8 and enters back into sewage treatment plant's process, is given up so as to avoid bottom of towe
The waste of hydro-thermal amount.
Comparative example
The device of the device and prior art of the present invention is contrasted, wherein old device is the device of Fig. 1, it is improved
Device is the device of Fig. 2.As a result see the table below shown in 1：
The new and old device of table 1, prior art is contrasted with the major economic indicators of the device of the present invention
The gas-phase potential heat of the aniline steam and vapor of device one side effectively utilizes rectifying tower top provided by the present invention,
Lithium bromide chiller condenser is driven using low-pressure steam, 7 degree of cold water is produced and is used for each other workshop refrigeration, it is anti-through each workshop
12 degree of water is converted into after answering kettle chuck or heat exchanger heat exchange, then 7 degree is produced Jing after low-pressure steam drives lithium bromide chiller
Water circulation is used, and makes the heat of rectifying column tower top obtain comprehensively effectively utilizing, and economic benefit is obvious.By rectifying tower top per hour
5310Kg low-pressure steams are produced, it is 500m to replace 0.6MPa steam drives lithium bromide chiller to produce 7 DEG C of cool water quantities3/ h, supplies car
Between refrigeration need.Steam expense per ton is calculated by 200 yuan, and whole year can steam saving expense about 7,650,000.On the other hand, with old dress
Put and compare with improved device, the consumption of recirculated water is greatly reduced using the comprehensive utilization device of the present invention.
As described above, combining the plan content given by accompanying drawing, similar technical scheme can be derived.In every case it is not de-
From the content of technical solution of the present invention, any simple modification above example made according to the technical spirit of the present invention, etc.
With change and modification, still fall within the range of technical solution of the present invention.
Claims (8)
1. in a kind of nigrosine production process gas-phase potential heat comprehensive utilization device, including rectifying column (3), condenser (4) and point
Layer device (5), it is characterised in that be connected with lithium bromide chiller between described rectifying column (3) and described condenser (4) cold
Condenser (6), described lithium bromide chiller condenser (6) are provided with circulation water inlet and circulating water outlet.
2. comprehensive utilization device according to claim 1, it is characterised in that described condenser (4) includes the first condensation
Device (41) and the second condenser (42), described the first condenser (41) and the second condenser (42) are connected to described bromine in turn
Change between lithium train condenser (6) and decker (5).
3. comprehensive utilization device according to claim 2, it is characterised in that on described lithium bromide chiller condenser (6)
It is provided with aniline steam entry and aniline water out；Described aniline steam entry passes through pipeline and described rectifying column (3)
Tower top be connected；Described aniline water out is connected with described the first condenser (41) by pipeline.
4. comprehensive utilization device according to claim 3, it is characterised in that the upside connection of described rectifying column (3) sets
There is static mixer (7).
5. comprehensive utilization device according to claim 4, it is characterised in that one end of described static mixer (7) sets
There are alkali liquor inlet and entrance containing aniline waste water, the other end is connected with the upside of described rectifying column (3).
6. comprehensive utilization device according to claim 5, it is characterised in that be provided with steaming on the downside of described rectifying column (3)
Vapour entrance and condensation-water drain.
7. comprehensive utilization device according to claim 6, it is characterised in that described lithium bromide chiller condenser (6), institute
The first condenser (41) stated and cooling water supply pipe (9) and cooling water backwater are respectively connected with the second condenser (42)
Pipe (10).
8. the comprehensive utilization device according to claim 1-7 any one, the bottom of towe of described rectifying column (3) are connected with
Heat exchanger (8).
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| DE10143818A1 (en) * | 2001-09-06 | 2003-03-27 | Basf Ag | Polyamide based thermoplastic molding materials containing an impact modifier and a copper compound useful for production of fibers, films (claimed), for synthetic plastic hollow bodies, especially siphons and Venturi tubes |
| CN101845235A (en) * | 2009-12-15 | 2010-09-29 | 西北农林科技大学 | Method for preparing aniline black in dye industry |
| CN103896864B (en) * | 2014-04-23 | 2015-12-09 | 青岛双桃精细化工（集团）有限公司 | A kind of preparation method of nigrosine |
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