CN103820139B - Method for demulsifying tar - Google Patents
Method for demulsifying tar Download PDFInfo
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- CN103820139B CN103820139B CN201410117122.9A CN201410117122A CN103820139B CN 103820139 B CN103820139 B CN 103820139B CN 201410117122 A CN201410117122 A CN 201410117122A CN 103820139 B CN103820139 B CN 103820139B
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Abstract
The invention discloses a method for demulsifying tar. The method is characterized by comprising the following steps: pressing emulsified tar in a 1# tar tank into a phenol water tank by a liquid level difference; introducing compressed air to stir wind inside the phenol water tank, so that water-tar separation of the emulsified tar is realized under a high-strength mixing effect; then heating, standing and dewatering, and settling the tar and water by virtue of gravity, wherein the tar is at the bottom and the water is at the top; feeding the tar to a 2# tar tank by virtue of a tar delivery pump; finally, dewatering and deslagging by virtue of a super centrifugal machine. The invention aims at providing a tar demulsifying method capable of efficiently and quickly solving the demulsification problem of the emulsified tar without spending a lot of money and additionally arranging the novel equipment, ensuring the smooth production of a tar system and providing tar with relatively low moisture content for production.
Description
Technical field
The present invention relates to a kind of process the method emulsifying tar, this technology belongs to coking production field, and it is right to be mainly used in
The breaking emulsion and dewatering of coking by-productses-coal tar is processed.
Background technology
NeiMenggu BaoGang GangLian Co., Ltd. Coking Factory has 10 coke ovens, more than 4,500,000 tons of annual output coke, has
Three gas cleaning systems, gas treatment 230,000 stand/hour, accordingly the tar production system in 150,000 tons of supporting tar/years in
In May, 2007 formally comes into operation, and mainly carries the processing and refining task of coke-oven plant's byproduct, and major product has light oil, washes
Nearly 10 kinds of products such as oil, carbolineum, carbolic oil, pitch, crude naphthalene, crude phenols, the annual economic benefit high for coke-oven plant's creation.
Pitchy that coal tar is coal to be obtained during destructive distillation and gasification, thick oil-based liquid, its composition and thing
Rationality matter fluctuation range is larger, depends primarily on the process conditions of coking coal composition and coking operation.Coal tar is from raw coke oven gas
In separate, the method for employing is to be sprayed with cyclic ammonia water to be allowed to cool condensation at coke oven collecting main, and in primary cooler
In further condensation cooling reclaimed, therefore contain substantial amounts of water and bits.Coal tar through the clarification of gas purification portion and adds
Heat standing is sent to by-product finish and is processed refining, and the phenol water that standing separation goes out sends back to gas purification portion ammonia steaming system to be carried out
Ammonia still process is processed.
Require in technique, tar is aqueous must to be controlled below 4%, toluene insolubles content more than 3.5%.But in recent years
Come, due to the change of coal for coking proportioning, coal tar also has a very large change in composition, is mainly manifested in tar proportion
The many aspects such as decline, toluene insolubles content reduce, aqueous big, oil-water emulsion, the tar bits content increase of tar, this gives burnt
The production changing the new tar system of factory brings very big impact.Wherein tar emulsification problem solves particularly to be stranded in process of production
Difficult.
Tar emulsification is to the impact producing
1st, tar emulsification directly affects tar preliminary hydro-extraction and ultracentrifuge centrifugal dehydration, causes very to subsequent production
Big difficulty.
2nd, tar emulsification, causes tar with phenol shipwreck to separate, affects ultracentrifuge dehydrating effect and centrifuge dnockout
Amount.
3rd, tar emulsification, causes ultracentrifuge moment of torsion to increase, dehydrating effect is decreased obviously, and boiled tar is aqueous higher,
Tar, water is carried secretly more in tar slag.
By-product finish tar, phenol water storage condition：
Tar tank is four 5000 vertical tar vats（DN23000mm,H=12000mm）, initial design two is Jiao
Oily receiving slit, the tar that primary recipient gas cleaning system is come；One is ultracentrifuge dnockout groove, predominantly ultracentrifuge
Qualified raw material is provided；One is anhydrous tar groove, and tar after the de- slag of ultracentrifuge dehydration for the primary recipient, is that tar steams
Evaporate the raw material that system supplies high-quality.After tar emulsification, water cannot be separated, and after long-play, is often close on more than 3000
The tar of ton emulsifies.
Phenol tank is mainly used in receiving the phenol water that tar groove top is separated, and sends system of gas purification portion back to by phenol water pump
System carries out ammonia still process process.
Process the method for tar emulsification and the problem of presence at present
1）Heating, standing separation：There is no positive effect to the water-oil separating in emulsification tar.
2）Centrifuge break milk separation：To tar demulsification substantially, but during breakdown of emulsion, need to carry out interior circulation, no
But increased energy resource consumption, and to ultracentrifuge well damage during breakdown of emulsion.
3）Demulsifier breakdown of emulsion：Aqueous be more than demulsification when 10% be not it is obvious that and demulsifier price is higher, add broken
Emulsion increased tar production cost to a certain extent.
4）Tar vat mechanical agitation breakdown of emulsion.Existing tar vat is the equipment that reuses, for ensureing safety it is impossible to carry out directly
Machinery stirs wind.
Content of the invention
It is an object of the invention to provide one kind does not need to put into substantial contribution and increase new equipment just can be efficiently quick
Solve the problems, such as to emulsify tar breakdown of emulsion, ensure that tar system produces direct motion, provide the one of the little tar of relative hydration for producing
The method planting tar breakdown of emulsion.
The technical solution adopted for the present invention to solve the technical problems is：
Using existing DN7000mm, the phenol tank of H=6965mm, mainly will be emulsified in tar vat by liquid level difference
In partial tar press-in phenol tank, it is passed through compressed air in phenol tank and carries out stirring wind, so that emulsification tar is stirred in high intensity
The separation of water and tar is realized, then heating, standing dehydration, tar and water pass through gravitational settling, and tar is below, water under effect
Above, now pass through tar delivery pump again and send into tar in tar vat, carry out dehydration finally by ultracentrifuge de-
Slag.
Below technical scheme is further elaborated：
A kind of method of tar breakdown of emulsion, is characterized in that：
The equipment that described breaking method is used is as follows：
Below 1 tar groove 2, closely exterior portion position has pipeline A16 to be connected with phenol tank 6, is respectively equipped with Jiao on pipeline A16
Flume outlet valve 7, phenol tank outlet valve 8, the tar conveyance conduit C18 after phenol water conveyance conduit B17 and breakdown of emulsion also distinguishes
It is connected with pipeline A16, the tar conveyance conduit C18 after phenol water conveyance conduit B17 and breakdown of emulsion is respectively equipped with phenol water delivery pump 11
With tar delivery pump 12 and valve, the top of 1# tar groove 2 is provided with tar groove dewatering outlet 3, has phenol in the lower inside of phenol tank 6
Tank heater 10, phenol sink top installs blowpipe 9, and blowpipe 9 is passed through phenol bottom of gullet always,
And have the distance no less than 500mm with bottom.
Described breaking method is as follows：
（1）Slowly open tar outlet valve 7 and phenol tank outlet valve 8, make emulsification tar pass through pressure differential from pipeline
A16 enters phenol tank 6；Phenol tank 6 liquid level is observed by the remote transmission instrument on phenol tank 6, now requires to enter Jiao of phenol tank
Fluid position keeps its vertical height 500-1000mm away from phenol sink top；
（2）Close tar groove outlet valve 7 and phenol tank outlet valve 8, slowly open the inlet valve of compressed air hose 9
Door, is passed through compressed air to phenol tank 6, pressure, in 0.25～0.4MPa, is sufficiently stirred for 2～4 hours, then opens phenol tank and adds
Hot device is heated to 85～95 DEG C, stands 24～48 hours, so that tar is separated with phenol water；
（3）Open phenol tank outlet valve 8, open the entry and exit valve of tar delivery pump 12, open tar delivery pump
12, the tar separated is sent into 2# tar groove 14；
（4）At any time observe tar delivery pump 12 pressure, pressure stability between 0.5-0.6 Mpa, when pressure exceedes
0.6Mpa or when hearing that tar delivery pump 12 vibrates larger, illustrates that burnt Water in oil is big, now closes tar delivery pump 12, then
Repeat step（2）Operation, makes emulsification tar continue water-oil separating；
（5）Open entrance, the outlet valve of phenol water delivery pump 11, open phenol water delivery pump 11, the phenol water of phenol tank 6 is sent
Toward gas purification portion mechanical settling tank, carry out follow-up ammonia still process operation.
The invention has the beneficial effects as follows：
1st, eliminate the impact to Tar production for the tar emulsification.NeiMenggu BaoGang GangLian Co., Ltd. Coking Factory is initial
Nearly 3000 tons of emulsification tar in tar vat, because tar is aqueous higher, ultracentrifuge cannot be processed at all.Implement this
After bright method, after stirring wind breakdown of emulsion, this part tar water is reduced to less than 4%, can directly be carried out with ultracentrifuge
The de- slag of dehydration, is then fed into tar distillation system and is processed refined it is achieved that continuous produce.
2nd, by carrying out stirring wind to tar, improve the mixed matter of tar, significantly reduce the tar slag of tar vat
Deposition velocity, decreases the deposition of the tar slag of tar vat.
3rd, according to measuring and calculating, process 1 ton of tar, more than 200 yuan of economic benefit can be created more, calculate like this, annual hypothesis is processed
3000 tons of the emulsification tar of aqueous 30-50%, then will create 20 to 30 ten thousand yuan of economic benefit for 1 year more.
Brief description
Fig. 1 is emulsion breaking device schematic diagram of the present invention；
Wherein：1-1# Jiao's oil tank heater, 2-1# tar groove, 3-1# tar groove dewatering outlet, 4- phenol waterpipe, 5-2# tar
Groove dewatering outlet, 6- phenol tank, 7-1# tar groove valve, 8- phenol tank outlet valve, 9- compressed air hose, 10- phenol tank heats
Device, 11- phenol water delivery pump, 12- tar delivery pump, 13- tar inlet tube, 14-2# tar groove, 15-2# Jiao's oil tank heater,
16- pipeline A, 17- pipeline B, 18- pipeline C.
Specific embodiments：
Embodiment 1：
A kind of method of tar breakdown of emulsion, is characterized in that：
The equipment that described breaking method is used is as follows：
Below 1 tar groove 2, closely exterior portion position has pipeline A16 to be connected with phenol tank 6, is respectively equipped with Jiao on pipeline A16
Oil groove valve 7, phenol water tank valve 8, the tar conveyance conduit C18 after phenol water conveyance conduit B17 and breakdown of emulsion is also respectively with pipeline A even
Connect, the tar conveyance conduit C18 after phenol water conveyance conduit B17 and breakdown of emulsion is respectively equipped with phenol water delivery pump 11 and tar delivery pump
12 and valve, the top of 1# tar groove 2 is provided with tar groove dewatering outlet 3, has phenol tank heater in the lower inside of phenol tank 6
10, phenol sink top installs blowpipe 9, and blowpipe 9 is passed through phenol bottom of gullet always, and has with bottom
Distance no less than 500mm.
The step of described breaking method is as follows：
（a）Slowly open tar outlet valve 7 and phenol tank outlet valve 8, make emulsification tar pass through pressure differential from pipeline
A16 enters phenol tank 6；Phenol tank 6 liquid level is observed by the remote transmission instrument on phenol tank 6, now requires to enter Jiao of phenol tank
Fluid position keeps its vertical height 500-1000mm away from phenol sink top；
（b）Close tar groove outlet valve 7 and phenol tank outlet valve 8, slowly open the inlet valve of compressed air hose 9
Door, is passed through compressed air to phenol tank 6, pressure, in 0.25～0.4MPa, is sufficiently stirred for 2～4 hours, then opens phenol tank and adds
Hot device is heated to 85～95 DEG C, stands 24～48 hours, so that tar is separated with phenol water；
（c）Open phenol tank outlet valve 8, open the entry and exit valve of tar delivery pump 12, open tar delivery pump
12, the tar separated is sent into 2# tar groove 14；
（d）At any time observe tar delivery pump 12 pressure, pressure stability between 0.5-0.6 Mpa, when pressure exceedes
0.6Mpa or when hearing that tar delivery pump 12 vibrates larger, illustrates that burnt Water in oil is big, now closes tar delivery pump 12, then
Repeat step（2）Operation, makes emulsification tar continue water-oil separating；
（e）Open entrance, the outlet valve of phenol water delivery pump 11, open phenol water delivery pump 11, the phenol water of phenol tank 6 is sent
Toward gas purification portion mechanical settling tank, carry out follow-up ammonia still process operation.
The tar of 2# tar groove 14 carries out being dehydrated de- slag by ultracentrifuge, after emulsification tar is fully processed, phenol
Tank 6 continues to the phenol water in each tar groove, and from 1# tar groove dewatering outlet 3, entering phenol tank 6 through phenol waterpipe 4 does not affect
Any production.
2# tar groove is as 1# tar slot structure.
Claims (1)
1. a kind of method of tar breakdown of emulsion, is characterized in that：
The equipment that described breaking method is used is as follows：
1 tar groove（2）Closely there is pipeline A exterior portion position for lower section（16）With phenol tank（6）Connect, in pipeline A（16）Upper set respectively
There is tar groove valve（7）, phenol tank outlet valve（8）, phenol water conveyance conduit B (17）With the tar conveyance conduit C after breakdown of emulsion
（18）Also respectively with pipeline A（16）Connect, phenol water conveyance conduit B（17）With the tar conveyance conduit C after breakdown of emulsion（18）Upper difference
It is provided with phenol water delivery pump（11）With tar delivery pump（12）And valve, 1# tar groove（2）Top be provided with tar groove dewatering outlet
（3）, in phenol tank（6）Lower inside have phenol tank heater（10）, phenol tank（6）Blowpipe is installed at top
（9）, blowpipe（9）It is passed through phenol tank always（6）Bottom, and have the distance no less than 500mm with bottom；
The step of described breaking method is as follows：
（a）, slowly open tar outlet valve（7）With phenol tank outlet valve（8）, make emulsification tar pass through pressure differential from pipeline
A（16）Enter phenol tank（6）；By phenol tank（6）On remote transmission instrument observe phenol tank（6）Liquid level, now requires to enter phenol
The tar liquid level of tank keeps its vertical height 500-1000mm away from phenol sink top；
（b）, close tar groove outlet valve（7）With phenol tank outlet valve（8）, slowly open compressed air hose（9）Entrance
Valve, to phenol tank（6）It is passed through compressed air, pressure, in 0.25～0.4MPa, is sufficiently stirred for 2～4 hours, then opens phenol water
The heater of groove (6) is heated to 85～95 DEG C, stands 24～48 hours, so that tar is separated with phenol water；
（c）, open phenol tank outlet valve（8）, open tar delivery pump（12）Entry and exit valve, open tar delivery pump
（12）, the tar separated is sent into 2# tar groove（14）；
（d）, at any time observe tar delivery pump（12）Pressure, pressure stability between 0.5-0.6 Mpa, when pressure exceedes
0.6Mpa or hear tar delivery pump（12）When vibrating larger, illustrate that burnt Water in oil is big, now close tar delivery pump
（12）, repeat step（b）Operation, makes emulsification tar continue water-oil separating；
（e）, open phenol water delivery pump（11）Entrance, outlet valve, open phenol water delivery pump（11）, by phenol tank（6）Phenol
Water is sent to gas purification portion mechanical settling tank, carries out follow-up ammonia still process operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117122.9A CN103820139B (en) | 2014-03-27 | 2014-03-27 | Method for demulsifying tar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410117122.9A CN103820139B (en) | 2014-03-27 | 2014-03-27 | Method for demulsifying tar |
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| CN103820139A CN103820139A (en) | 2014-05-28 |
| CN103820139B true CN103820139B (en) | 2017-02-15 |
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| CN201410117122.9A Active CN103820139B (en) | 2014-03-27 | 2014-03-27 | Method for demulsifying tar |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105295989A (en) * | 2015-11-27 | 2016-02-03 | 煤炭科学技术研究院有限公司 | Dehydrating and desalinizing method of high-temperature coal tar |
| CN112410062A (en) * | 2020-10-29 | 2021-02-26 | 中国林业科学研究院林产化学工业研究所 | Method for continuously removing moisture from biomass pyrolysis tar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818076A (en) * | 2010-05-07 | 2010-09-01 | 杨东平 | Processing technology for water/ash-containing tar |
| CN202453222U (en) * | 2012-02-15 | 2012-09-26 | 内蒙古包钢钢联股份有限公司 | Experimental device capable of skimming oil automatically after tar demulsification |
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2014
- 2014-03-27 CN CN201410117122.9A patent/CN103820139B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818076A (en) * | 2010-05-07 | 2010-09-01 | 杨东平 | Processing technology for water/ash-containing tar |
| CN202453222U (en) * | 2012-02-15 | 2012-09-26 | 内蒙古包钢钢联股份有限公司 | Experimental device capable of skimming oil automatically after tar demulsification |
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| CN103820139A (en) | 2014-05-28 |
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