CN206646067U - A kind of coal tar takes off slag and fraction seperation device - Google Patents

Abstract

A kind of coal tar takes off slag and fraction seperation device, is mixed, extracted with coal tar using solvent in coal tar extractive reaction kettle, then carries out isolated tar slag and solvent extract in solid-liquid separator, further takes off slag by vacuum flasher and filter；Solvent extract enters the first decompression vaporizer and condenses to obtain solvent and de- dross coal tar, and solvent reusable edible through the first condensing unit；De- dross coal tar enters the second decompression vaporizer and condenses to obtain coal tar heavy component and coal tar light components through the second condensing unit.The purpose of this utility model is to provide a kind of coal tar and takes off slag and fraction seperation device, and the device can realize that low effective fractionation of coal tar oil ingredient, process energy consumption, non-wastewater discharge, equipment investment be few, continuous production is easily enlarged production scale.

Description

A kind of coal tar takes off slag and fraction seperation device

Technical field

The utility model belongs to technical field of coal chemical industry, is related to a kind of coal tar and takes off slag and fraction seperation device.

Background technology

With rapid economic development, China has turned into world energy sources consumption big country, market to the demand of oil product increasingly Increase, oil supply deficiency is outstanding day by day, and it is imperative to seek new alternative energy source.China possesses the coal resources of relative abundance With large quantities of coal chemical enterprises, a large amount of coal tar of by-product.The coal tar obtained from the dry distillation of coal and pyrolysis is very valuable industrial chemicals, The almost all of carbazole of in the market and quinoline all derive from coal tar, and most of anthracene, acenaphthene and pyrene are also to be passed through from coal tar Processing, separation, extraction obtain.As can be seen here, coai-tar product world's industrial chemicals this part in occupation of and its it is important Status.

Coal-tar residue is a kind of poisonous and hazardous waste residue, deals with improperly and easily causes environmental pollution, and coal-tar residue is in high temperature It is lower that coking easily occurs, blocks pipeline, have a certain degree of influence on process equipment and catalyst etc., so being pre-processed in coal tar It is vital that slag is taken off in stage.Coal tar takes off slag technology and had at present：Solvent extraction and separation, emchanically centrifugal separation, pyrolysis point From etc..During using emchanically centrifugal separation technology, because the coal-tar residue constituent difference of separate sources is larger, to adapt to centrifuge The performance of machine, generally require and be further processed after coal-tar residue is pre-processed or is centrifuged, have and operated The shortcomings of journey is cumbersome, and cost of equipment is high.Coal Tars separation method is adaptable to coal-tar residue composition, hardly Secondary pollution is caused, but it is higher to consume energy.

Important by-products of the coal tar as Coal dressing, by separated can obtain light oil distillate, carbolic oil cut, Fraction of naphthalene oil, wash oil fraction, carbolineum cut and pitch, neutral component can be obtained by carrying out chemical treatment for first five kind cut (benzene,toluene,xylene, naphthalene, anthracene etc.), acidic components (phenol, cresols, naphthols etc.) and basic component (picoline, naphthylamines, Quinoline etc.).By these components carry out deep processing, obtained product be widely used in plastics, coating, synthetic fibers, synthetic rubber, The fields such as medicine, agricultural chemicals, fine chemistry industry and exotic material.

Describe a kind of coal tar electro-desalting, dehydration, the method for de- slag in Chinese patent CN103102933A, this method from Sodium carbonate liquor is added in pending coal tar, is sufficiently mixed and the heating that exchanges heat, by coal tar after the sodium salt of stabilization to be formed The filtering of mechanical admixture twice is carried out, the coal tar after filtering is continued to heat up, and water filling and demulsifier are carried out on pipeline, warp After static mixer mixing, electro-desalting, dehydration equipment are finally entered, desalination, dehydration are carried out in the presence of high voltage electric field, is taken off Slag.The complex operation, de- slag efficiency is low, and energy consumption is higher, is not easy to expand the scale of production.

A kind of coal tar deep processing preprocess method is described in Chinese patent CN105316018A, the utility model uses Centrifugation, gas back-flushing filtering, distillation, high voltage electric field carry out de- slag, deamination water, dephenolize, desalination to coal tar respectively, fit The pretreatment of low temperature or high temperature coal-tar in conjunction, but process low separation efficiency, complex operation, the high energy consumption.

A kind of dry distillation of coal and coal tar distillation combined technical method, feed coal are described in Chinese patent CN105647554A Powder enters microwave treatment after being sufficiently mixed with the coal tar heavy end that Distallation systm is isolated in the solid mixing apparatus of liquid and reacted Device generation coal gas, semicoke and coal tar；Coal tar is separated into coal tar light fraction, coal tar into Distallation systm after pretreatment Oily heavy end and coal tar asphalt, coal tar heavy end are recycled back to the solid mixing apparatus of liquid and mixed with coal dust.Coal in this method It is low that tar distillation cuts cut efficiency, and separation is not thorough, and the narrower cut of temperature range is not easy to cut.

A kind of efficient fractionating device, including fractionation room, heater, temperature are described in Chinese patent CN205516583U Induction installation, gas outlet, bridge piece, connecting tube, parameter display screen, visual window, fluid reservoir air inlet pipe, fluid reservoir, cooling storehouse Deng.Though the fractionating device can understand the running situation of equipment in time, structure is excessively complicated, cumbersome, is unfavorable for extensive Production.

In summary, not only energy consumption is big for the de- slag of traditional coal tar and fraction seperation technique, various waste water is produced, to environment A certain degree of pollution is caused, and separative efficiency is relatively low, separates not thorough, complex operation, it is time-consuming.So find it is pollution-free, Low energy consumption, a kind of efficient coal tar take off slag and fraction seperation technology tool has very important significance.

Utility model content

In order to overcome problem present in currently available technology, the purpose of this utility model is to provide a kind of coal tar and takes off slag With fraction seperation device, the technique can realize low effective fractionation of coal tar oil ingredient, process energy consumption, non-wastewater discharge, operation letter Singly it is easily enlarged production scale.

To achieve these goals, the technical solution adopted in the utility model is as follows：

A kind of coal tar takes off slag and fraction seperation device, including dehydrated coal tar storage tank, coal tar extractive reaction kettle, solvent Extract storage tank, the first tubular preheater, the first decompression vaporizer, the second tubular preheater and the second decompression vaporizer；

Dehydrated coal tar storage tank is connected with coal tar extractive reaction kettle top entry, and coal tar extractive reaction bottom portion goes out Mouth is connected with solid-liquid separator top entry, and solid-liquid separator outlet at bottom is connected with solvent extract charging pump intake, molten Agent extract feed pump discharge is connected through voltage transformation controller with two filters, each filter with tar slag storage tank and Solvent extract storage tank is connected；

Solvent extract outlet is connected with the first tubular preheater entrance, and the outlet of the first tubular preheater subtracts with first Pressure chamber input is connected, and the first decompression bottom of vaporizing chamber outlet is connected with the second tubular preheater entrance, and the second tubular type is pre- Hot device outlet is connected with the second decompression chamber input, and the second decompression vaporizer top exit is connected with the second condensing unit.

The utility model, which further improves, to be, two filters include first filter, the second filter, become voltage-controlled Device processed is connected with first filter, the second filter top entrance, and the outlet at bottom of first filter is divided into two-way, all the way with Tar slag storage tank is connected, and another way is connected with solvent extract storage tank；The outlet of second filter bottom is divided into two-way, all the way It is connected with tar slag storage tank, another way is connected with solvent extract storage tank.

The utility model, which further improves, to be, first filter porch is provided with the first rotary sprayer, second The second rotary sprayer is provided with filter inlet, the 3rd rotary sprayer second is provided with the first decompression chamber input The 4th rotary sprayer is provided with decompression chamber input.

The utility model further improve is, solid-liquid separator outlet at bottom also with vacuum flasher top entry phase Connect, the condensed device of side outlet is connected with solvent extract charging pump intake on vacuum flasher, and vacuum flashing tower bottom goes out Mouth is connected with tar slag storage tank.

The utility model, which further improves, to be, the first decompression vaporizer top exit and the first condensing unit entrance phase Connection.

The utility model, which further improves, to be, in addition to solvent tank, the outlet of solvent tank are divided into two-way, all the way It is connected with coal tar extractive reaction kettle top entry, another way is connected with voltage transformation controller.

The utility model, which further improves, to be, solvent tank is internally provided with liquid level gauge.

The utility model, which further improves, to be, the first condensing unit outlet at bottom is connected with solvent tank.

The utility model, which further improves, to be, the first decompression bottom of vaporizing chamber outlet is through de- dross coal tar storage tank and the Two tubular preheater entrances are connected；Dehydrated coal tar storage tank, solvent tank, tar slag storage tank, solvent extract storage tank, de- dross coal Tar storage tank, coal tar heavy component storage tank and coal tar light components tank inside are provided with liquid level gauge.

The utility model, which further improves, to be, the second condensing unit outlet at bottom enters with coal tar light components storage tank Mouth is connected；Second decompression bottom of vaporizing chamber outlet is connected with coal tar heavy component reservoir inlet.

Compared with prior art, the utility model has the advantage that：The utility model is by setting coal tar to extract Reactor, extracted in coal tar extractive reaction kettle with dehydrated coal tar using solvent, divided by solid-liquid separator From then further being removed the gred in two filters, remove solvent through the first decompression vaporizer, then depressurize vaporizer through second and enter Row coal tar component fractionation, obtains coal tar heavy component and coal tar light components.Present apparatus occupation of land is small, simple in construction, into This is low, it is easy to accomplish industrialization, solvent can be recycled, not produce waste water and environment be polluted, and can realize coal tar The de- slag of oil and the operation of fraction seperation technique serialization.

Further, by setting vacuum flasher, solvent extract in tar slag can be made further to be separated.

Further, by setting first filter and the second filter, the first mistake is enabled to using voltage transformation controller Filter and the second filter mutually switch automatically, de- slag technique is realized continuous operation.

Further, by setting the first rotary sprayer, the second rotary sprayer, the 3rd rotary sprayer, the 4th rotation Turning sprayer makes coal tar and its mixture be disperseed well.

Dehydrated coal tar, solvent are added in coal tar extractive reaction kettle by the utility model, in coal tar extractive reaction Heated in kettle, after extraction, solvent is separated with dehydrated coal tar mixture through solid-liquid separator, tentatively obtains tar slag and solvent Extract；Tar slag addition vacuum flasher is further obtained into tar slag component and solvent extract, solvent extract is passed through First filter, the second filter are further filtrated to get tar slag component and solvent extract；Gained solvent extract is added Enter to the first tubular preheater after preheating, entering the vaporization of the first decompression vaporizer makes solvent be separated with coal tar, solvent Steam is condensed into the first condensing unit, obtains solvent, and de- dross coal tar is obtained in the first decompression bottom of vaporizing chamber；By de- dross coal After tar is added to the preheating of the second tubular preheater, entering the vaporization of the second decompression vaporizer is separated coal tar oil ingredient, Light components are condensed into the second condensing unit, obtain coal tar light components, and coal tar is obtained in the second decompression bottom of vaporizing chamber Oily heavy component；The utility model can realize that coal tar takes off the continuous operation of slag technique and the continuous separation of cut, obtain coal tar Oily heavy component and coal tar light components.With effective fractionation, process energy consumption is low, non-wastewater discharge, equipment investment are few, continuous The advantages of metaplasia production is easily enlarged production scale, overcomes coal tar in the prior art and take off existing for during slag and fraction seperation Energy consumption is big, multi-process handling and complicated, product each component fractionation, the problem of environmental pollution is serious.The utility model is green point Technique is evaporated, extractant recycles, and the operating condition of technique is gentle, easy, and technique and equipment manufacturing cost are low.

Brief description of the drawings

Fig. 1 is that coal tar of the present utility model takes off slag technological process；

Fig. 2 is coal tar fraction separating technology flow of the present utility model；

Fig. 3 is the total ion chromatogram of light 1 component of middle coalite tar；

Fig. 4 is that the TG of light 1 component of middle coalite tar schemes；

Fig. 5 is the total ion chromatogram that middle coalite tar weighs 1 component；

Fig. 6 is the TG figures that middle coalite tar weighs 1 component；

Fig. 7 is the total ion chromatogram of light 2 component of middle coalite tar；

Fig. 8 is that the TG of light 2 component of middle coalite tar schemes；

Fig. 9 is the total ion chromatogram that middle coalite tar weighs 2 components；

Figure 10 is the TG figures that middle coalite tar weighs 2 components；

In figure, 1, dehydrated coal tar storage tank；2nd, solvent tank；3rd, the first valve；4th, solvent feed pump；5th, the second valve； 6th, coal tar extractive reaction kettle；7th, solid-liquid separator；8th, vacuum flasher；9th, condenser；10th, tar slag storage tank；11st, solvent extracts Take thing feed pump；12nd, the 3rd valve；13rd, voltage transformation controller；14th, the first rotary sprayer；15th, first filter；16th, second Rotary sprayer；17th, the second filter；18th, solvent extract storage tank；19th, the 4th valve；20th, the first tubular preheater；21、 3rd rotary sprayer；22nd, the first decompression vaporizer；23rd, the first condensing unit；24th, dross coal tar storage tank is taken off；25th, dross coal is taken off Tar feed pump；26th, the 5th valve；27th, the second tubular preheater；28th, the 4th rotary sprayer；29th, the second decompression vaporizer； 30th, coal tar heavy component storage tank；31st, the second condensing unit；32nd, coal tar light components storage tank.

Embodiment

The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.

Dehydrated coal tar storage tank 1 in the utility model, solvent tank 2, tar slag storage tank 10, solvent extract storage tank 18, Liquid level is both provided with inside de- dross coal tar storage tank 24, coal tar heavy component storage tank 30 and coal tar light components storage tank 32 Meter；Dehydrated coal tar storage tank 1, solvent tank 2, coal tar extractive reaction kettle 6, vacuum flasher 8, first filter 15, second Filter 17, the first tubular preheater 20, the second tubular preheater 27, first decompression vaporizer 22, second depressurize vaporizer 29 Carry heating mantle, the specific preheating temperature of solvent, can be set according to specific solvent in the utility model.

Dehydrated coal tar storage tank 1, coal tar extractive reaction kettle 6, solid-liquid separator 7, vacuum flasher 8；Solvent extract Storage tank 18, the first tubular preheater 20, first decompression vaporizer 22, the first condensing unit 23；De- dross coal tar 24, the second tubular type Preheater 27, second depressurizes vaporizer 29, the second condensing unit 31 is cascaded structure；The first filter 15 and second filters Device 17 is parallel-connection structure.

Dehydrated coal tar is middle low temperature or high temperature coal-tar dehydration gained in the utility model.

Referring to Fig. 1 and Fig. 2, a kind of coal tar, which takes off slag and fraction seperation device, to be included：Dehydrated coal tar storage tank 1, solvent storage Tank 2, the first valve 3, solvent feed pump 4, the second valve 5, coal tar extractive reaction kettle 6, solid-liquid separator 7, vacuum flasher 8th, condenser 9, tar slag storage tank 10, solvent extract feed pump 11, the 3rd valve 12, voltage transformation controller 13, the first rotation spray Day with fog 14, first filter 15, the second rotary sprayer 16, the second filter 17, solvent extract storage tank 18, the 4th valve 19th, the first tubular preheater 20, the 3rd rotary sprayer 21, first decompression vaporizer 22, the first condensing unit 23, de- dross coal are burnt Oil tank 24, de- dross coal tar feed pump 25, the 5th valve 26, the second tubular preheater 27, the 4th rotary sprayer 28, second Depressurize vaporizer 29, coal tar heavy component storage tank 30, the second condensing unit 31 and coal tar light components storage tank 32.

Referring to Fig. 1, dehydrated coal tar storage tank 1 is connected through the first valve 3 with the top entry of coal tar extractive reaction kettle 6, The outlet at bottom of coal tar extractive reaction kettle 6 is connected with the top entry of solid-liquid separator 7, and the outlet at bottom of solid-liquid separator 7 is divided into Two-way, it is connected all the way with the top entry of vacuum flasher 8, the condensed device 9 of side outlet and solvent extract on vacuum flasher 8 The entrance of feed pump 11 is connected；The outlet at bottom of vacuum flasher 8 is connected with tar slag storage tank 10；Another way and solvent extract The entrance of feed pump 11 is connected, and solvent extract feed pump 11 is exported through the 3rd valve 12, voltage transformation controller 13 and first filter 15th, the top entry of the second filter 17 is connected, and the outlet at bottom of first filter 15 is divided into two-way, all the way with tar slag storage tank 10 are connected, and another way is connected with solvent extract storage tank 18；Likewise, the outlet at bottom of the second filter 17 is divided into two-way, It is connected all the way with tar slag storage tank 10, another way is connected with solvent extract storage tank 18.

Solvent tank 2 outlet is connected with the entrance of solvent feed pump 4, solvent feed pump 4 export is divided into two-way, all the way with coal tar The oily top entry of extractive reaction kettle 6 is connected, and another way is through the second valve 5, voltage transformation controller 13 and first filter 15, second The top entry of filter 17 is connected.

Referring to Fig. 2, solvent extract storage tank 18 exports to be connected through the 4th valve 19 with the entrance of the first tubular preheater 20, the One tubular preheater 20 exports to be connected with the first decompression entrance of vaporizer 22, the first decompression top exit of vaporizer 22 and first The entrance of condensing unit 23 is connected, and the outlet at bottom of the first condensing unit 23 is connected with solvent tank 2；First decompression vaporizer 22 bottom Portion outlet is connected with taking off the entrance of dross coal tar storage tank 24, takes off dross coal tar storage tank 24 and exports through taking off dross coal tar feed pump 25, the Five valves 26 are connected with the entrance of the second tubular preheater 27, the outlet of the second tubular preheater 27 and the second decompression entrance of vaporizer 29 It is connected, the second decompression top exit of vaporizer 29 is connected with the second condensing unit 31, the outlet at bottom of the second condensing unit 31 and coal The entrance of tar light components storage tank 32 is connected；The second decompression outlet at bottom of vaporizer 29 enters with coal tar heavy component storage tank 30 Mouth is connected.

First rotary sprayer 14 is arranged on the porch of first filter 15, and the second rotary sprayer 16 is arranged on the second mistake The porch of filter 17, the 3rd rotary sprayer 21 are arranged on the porch of the first decompression vaporizer 22, and the 4th rotary sprayer 28 is set Put in the second decompression vaporizer 29 porch.

Coal tar of the present utility model takes off slag and fraction seperation technique comprises the following steps：

First, coal tar takes off slag technological process

Referring to Fig. 1, injected after dehydrated coal tar is preheating into 40 DEG C~100 DEG C in coal tar extractive reaction kettle, at the same it is molten Agent (tetrahydrofuran, dichloromethane or toluene) is heated to being forced into through solvent feed pump 4 after 40 DEG C~100 DEG C by solvent tank 2 It is pumped into after 0.2~0.5MPa in coal tar extractive reaction kettle 6；Dehydrated coal tar and solvent volume in coal tar extractive reaction kettle 6 Than for 1：(0.5~2)；

Heated in coal tar extractive reaction kettle 6, after extraction, by solvent and dehydrated coal tar mixture through solid-liquid separator 7 separation, tentatively obtain tar slag and solvent extract, tar slag further obtains tar slag and solvent into vacuum flasher 8 Extract.

Through the isolated solvent extract of the isolated solvent extract of solid-liquid separator 7 and vacuum flasher 8 It is homogeneously added into first filter 15 and is filtered through the first rotating spraying 14, filtrate enters solvent extract storage tank 18； When pressure inside first filter 15 reaches setting value (1kPa~0.09MPa), voltage transformation controller 13 automatically switches to Tow filtrator 17 is filtered, and is passed through solvent (tetrahydrofuran, dichloromethane or toluene) and the filter screen in first filter 15 is entered Row elution, leacheate enter solvent extract storage tank 18, filter screen are overturn, the filter residue being passed through on nitrogen purging filter screen, filter Slag is stored in tar slag storage tank 10, is again overturn filter screen after purging is clean；When the internal pressure of the second vacuum filter 17 reaches During setting value (1kPa~0.09MPa), voltage transformation controller 13 automatically switches to first filter 15 and filtered, to the second vacuum Filter 17 is eluted, is overturn, purged, overturn again；First vacuum filter 15 and second true is made by voltage transformation controller 13 Air filter 17 mutually switches.

2nd, coal tar fraction separating technology flow

Referring to Fig. 2, the internal solvent extract of solvent extract storage tank 18 is added to the preheating of the first tubular type through the 4th valve 19 In device 20, solvent extract (i.e. coal tar mixed liquor) is equably sprayed through the 3rd sprayer 21 after being preheated to 40~100 DEG C In the first decompression vaporizer 22, the first decompression vaporizer 22 top solvent vapo(u)r enters in the first condensing unit 23, condensed Flow into afterwards in solvent tank 2, de- dross coal tar enters in de- dross coal tar storage tank 24 obtained by the first decompression vaporizer 22 bottom, takes off Dross coal tar is pumped into the second tubular preheater 27 after de- dross coal tar feed pump 25 is forced into 0.2~10MPa, is preheated to De- dross coal tar is equably sprayed in the second decompression vaporizer 29 through the 4th sprayer 28 after 100~600 DEG C, the second decompression The top light component of vaporizer 29 enters in coal tar light components storage tank 32 after being condensed into the second condensing unit 31, and second Coal tar heavy component obtained by the bottom of vaporizer 29 is depressurized to enter in coal tar heavy component storage tank 30.

Solvent described in the utility model is tetrahydrofuran, dichloromethane or toluene.

The utility model can realize that coal tar takes off the continuous operation of slag technique and the continuous separation of cut, obtain coal tar heavy duty Matter component and coal tar light components are product.

First filter 15 and the top of the second filter 17 are passed through nitrogen, and the filter residue on filter screen is purged.

The first vacuum filter 15 is set mutually to switch with the second vacuum filter 17 by transformation automatic controller 13.

First rotary sprayer 14, the second rotary sprayer 16, the 3rd rotary sprayer 21 and the 4th rotary sprayer 28 can be such that coal oil mixture uniformly sprays.

The temperature range of first tubular preheater 20 preheating solvent extract is 40~100 DEG C.

First decompression vaporizer 22 internal upper part setting column plate, its number of plates is 5~8 pieces, pressure limit 1kPa~ 0.09MPa。

The temperature range of the de- dross coal tar of second tubular preheater 27 preheating is 100~600 DEG C.

Second decompression vaporizer 29 internal upper part setting column plate, its number of plates is 8~12 pieces, pressure limit 1kPa~ 0.09MPa。

The moulding pressure scope of solvent feed pump 4 is 0.2~0.5MPa.

The moulding pressure scope of solvent extract feed pump 11 is 0.2MPa~0.5MPa.

The de- moulding pressure scope of dross coal tar feed pump 25 is 0.2MPa~10MPa.

First vacuum filter 15 and the pressure limit 1kPa~0.09MPa of the second vacuum filter 17.

Filter screen is acidproof corrosion resistant braid fabric or ceramic filter screen, and aperture is 25~75um；

First rotary sprayer 14, the second rotary sprayer 16, the 3rd rotary sprayer 21 and the 4th rotary sprayer 28 gun slot is 75~100um；The rotating speed of first rotary sprayer 14 and second turn of rotary sprayer 16 is 10~100r/ min；The rotating speed of 3rd rotary sprayer 21 and the 4th turn of rotary sprayer 28 is 10~50r/min.

Condensing agent used in first condensing unit 23 and the second condensing unit 31 is water, methanol, liquefied ammonia or ethanol.

In order to illustrate effect of the present utility model, example 1 below takes off low temperature coal tar during slag technique is carried out using coal tar The de- slag experiment of oil, calculates de- slag rate (relative to dehydrated coal tar amount).During embodiment 2 is carried out using coal tar fraction separating technology Coalite tar fraction seperation is tested, in order to accurate Analyze ＆ separate product, using gas chromatograph-mass spectrometer (GC-MS) and heat point Analyzer is measured to the composition and thermal weight loss process of product.The now coal using experimental raw to be derived from semi-coke factory of northern Shensi Shenmu County Tar (heavy oil) is separated as experimental subjects, and the fundamental property that heavy oil (tar depositing reservoir subsurface layer oil) is determined by national standard is shown in Table 1.

The fundamental property of the coal tar heavy oil of table 1

Note：* minusing

Slag and cut continuous separation technology are taken off using the utility model coal tar, it is extractant to select tetrahydrofuran solvent, Coal tar is fractionated to obtain coal tar heavy component, coal tar light components.

Embodiment 1

It is 1 by volume to take 200g dehydrated coal tars：1 adds tetrahydrofuran solvent, after being stirred with glass bar, through taking out Filter, centrifugation removing tar slag, a small amount of solvent in tar slag in filter paper and centrifuge tube are volatilized clean, are calculated after weighing de- Slag rate (relative to dehydrated coal tar amount) is 0.12%.It is 1 by volume to take 200g dehydrated coal tars and tetrahydrofuran solvent again： 1 is added in the coal tar extractive reaction kettle of the device, is tested according to foregoing schemes, weighs what is stored in tar slag storage tank De- slag rate (relative to dehydrated coal tar amount) is calculated as 0.3% in tar slag.

In summary, it is known that slag is taken off using the device and takes off slag contrast with laboratory, the device coal tar takes off slag more thoroughly, and It will not be caused damage because solvent volatilizees.

Embodiment 2

A certain amount of dehydrated coal tar is taken to be tested according to foregoing schemes, the temperature of the second tubular preheater is set respectively For 200 DEG C, 300 DEG C, after off-test and respectively light by 1 to the middle coalite tar obtained from products pot (>=200 DEG C evaporate Point), weigh 1 (≤200 DEG C of cuts), light by 2 (>=300 DEG C of cuts), weigh 2 (≤300 DEG C of cuts) each 1mL, then two with 2mL Chloromethanes dissolve, then carry out GC-MS and TG analysis, analysis result see Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10 with And table 2, table 3, table 4 and table 5.

Take a certain amount of dehydrated coal tar to enter the device, de- dross coal tar is obtained after de- slag, desolventizing and enters the second pipe Formula preheater is preheated to 200 DEG C, carries out cutting cut under the second decompression vaporizer decompression state, it is light by 1 to obtain middle coalite tar (≤200 DEG C of cuts) and weight 1 (>=200 DEG C of cuts), detected by GC-MS and TG, analysis result such as Fig. 3, Fig. 4, Fig. 5, Shown in Fig. 6 and table 2, table 3.It can be obtained by Fig. 3, Fig. 4 and the combination of table 2, middle coalite tar light 1 is that weight-loss ratio reaches at 200 DEG C 98.27%, illustrate that light 1 is almost detected completely by GC-MS, product is concentrated mainly on before 40min (retention time)；By Fig. 5, Fig. 6 and the combination of table 3 can obtain, and middle coalite tar weighs 1 and reaches 4.17% in 200 DEG C of weight-loss ratios, reaches in 300 DEG C of weight-loss ratios 74.94%, illustrate that weight 1 is only partly detected by GC-MS, product is concentrated mainly on after 40min (retention time).

Take a certain amount of dehydrated coal tar to enter the device, de- dross coal tar is obtained after de- slag, desolventizing and enters the second pipe Formula preheater is preheated to 300 DEG C, carries out cutting cut under the second decompression vaporizer decompression state, it is light by 2 to obtain middle coalite tar (≤300 DEG C of cuts) and weight 2 (>=300 DEG C of cuts), detected by GC-MS and TG, analysis result such as Fig. 7, Fig. 8, Fig. 9, Shown in Figure 10 and table 4, table 5.It can be obtained by Fig. 7, Fig. 8 and the combination of table 4, middle light 2 weight-loss ratio of coalite tar reaches 94.37%, says Bright light 2 are almost detected that retention time has product before 80min by GC-MS completely；By Fig. 9, Figure 10 and the knot of table 5 Conjunction can obtain, and middle coalite tar weighs 2 weight-loss ratios and reaches 4.02%, illustrates that weight 2 can hardly be detected by GC-MS, retain Time product before 80min is seldom.

In summary, it is known that coal tar is fractionated using the device, fractionating effect is preferable.

Light 1 composition of coalite tar in table 2

Coalite tar weighs 1 and formed in table 3

Light 2 composition of coalite tar in table 4

Coalite tar weighs 2 and formed in table 5

From Fig. 4, Fig. 5 and Fig. 6 experimental studies results, slag and fraction seperation are taken off using coal tar of the present utility model Technique and device, it can efficiently separate to obtain heavy component, light components in coal tar, compared with conventional method, this practicality New is a kind of method of the continuous separation coal tar of green, and the relatively conventional separator of device takes up an area small, small investment, is easily achieved Industrialization.The utility model overcomes that existing energy consumption during existing coal tar processing is big, trivial operations, separative efficiency simultaneously It is low, pollution environment the problems such as.

Claims (10)

1. a kind of coal tar takes off slag and fraction seperation device, it is characterised in that extracts including dehydrated coal tar storage tank (1), coal tar Take reactor (6), solvent extract storage tank (18), the first tubular preheater (20), the first decompression vaporizer (22), the second tubular type Preheater (27) and the second decompression vaporizer (29)；

Dehydrated coal tar storage tank (1) is connected with coal tar extractive reaction kettle (6) top entry, coal tar extractive reaction kettle (6) Outlet at bottom is connected with solid-liquid separator (7) top entry, solid-liquid separator (7) outlet at bottom and solvent extract feed pump (11) entrance is connected, and solvent extract feed pump (11) outlet is connected through voltage transformation controller (13) with two filters, each Filter is connected with tar slag storage tank (10) and solvent extract storage tank (18)；

Solvent extract storage tank (18) outlet is connected with the first tubular preheater (20) entrance, the first tubular preheater (20) outlet It is connected with first decompression vaporizer (22) entrance, the first decompression vaporizer (22) outlet at bottom and the second tubular preheater (27) Entrance is connected, and the second tubular preheater (27) outlet is connected with second decompression vaporizer (29) entrance, the second decompression vaporizer (29) top exit is connected with the second condensing unit (31).

2. a kind of coal tar according to claim 1 takes off slag and fraction seperation device, it is characterised in that two filter bags Include first filter (15), the second filter (17), voltage transformation controller (13) and first filter (15), the second filter (17) Top entry is connected, and the outlet at bottom of first filter (15) is divided into two-way, is connected all the way with tar slag storage tank (10), separately It is connected all the way with solvent extract storage tank (18)；Second filter (17) outlet at bottom is divided into two-way, is stored up all the way with tar slag Tank (10) is connected, and another way is connected with solvent extract storage tank (18).

3. a kind of coal tar according to claim 2 takes off slag and fraction seperation device, it is characterised in that first filter (15) porch is provided with the first rotary sprayer (14), and the second filter (17) porch is provided with the second rotary sprayer (16), first decompression vaporizer (22) porch is provided with the 3rd rotary sprayer (21), second decompression vaporizer (29) entrance Place is provided with the 4th rotary sprayer (28).

4. a kind of coal tar according to claim 1 takes off slag and fraction seperation device, it is characterised in that solid-liquid separator (7) outlet at bottom is also connected with vacuum flasher (8) top entry, on vacuum flasher (8) the condensed device of side outlet (9) with Solvent extract feed pump (11) entrance is connected, and vacuum flasher (8) outlet at bottom is connected with tar slag storage tank (10).

5. a kind of coal tar according to claim 1 takes off slag and fraction seperation device, it is characterised in that the first decompression vaporization Room (22) top exit is connected with the first condensing unit (23) entrance.

6. a kind of coal tar according to claim 5 takes off slag and fraction seperation device, it is characterised in that is also stored up including solvent Tank (2), the outlet of solvent tank (2) are divided into two-way, are connected all the way with coal tar extractive reaction kettle (6) top entry, another Road is connected with voltage transformation controller (13).

7. a kind of coal tar according to claim 6 takes off slag and fraction seperation device, it is characterised in that solvent tank (2) It is internally provided with liquid level gauge.

8. a kind of coal tar according to claim 6 takes off slag and fraction seperation device, it is characterised in that the first condensing unit (23) outlet at bottom is connected with solvent tank (2).

9. a kind of coal tar according to claim 1 takes off slag and fraction seperation device, it is characterised in that the first decompression vaporization Room (22) outlet at bottom is connected through de- dross coal tar storage tank (24) with the second tubular preheater (27) entrance；Dehydrated coal tar storage tank (1), tar slag storage tank (10), solvent extract storage tank (18), de- dross coal tar storage tank (24), coal tar heavy component storage tank (30) and inside coal tar light components storage tank (32) it is provided with liquid level gauge.

10. a kind of coal tar according to claim 1 takes off slag and fraction seperation device, it is characterised in that the second condensation dress (31) outlet at bottom is put with coal tar light components storage tank (32) entrance to be connected；Second decompression vaporizer (29) outlet at bottom with Coal tar heavy component storage tank (30) entrance is connected.