CN206266474U - A kind of coal tar prepares the device of phenolic resin - Google Patents
A kind of coal tar prepares the device of phenolic resin Download PDFInfo
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- CN206266474U CN206266474U CN201621337055.2U CN201621337055U CN206266474U CN 206266474 U CN206266474 U CN 206266474U CN 201621337055 U CN201621337055 U CN 201621337055U CN 206266474 U CN206266474 U CN 206266474U
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Abstract
A kind of technique and device that phenolic resin is prepared based on coal tar, with toluene or benzene as solvent, acid or alkali are catalyst, there is phenolic aldehyde polymerisation under certain condition with formaldehyde, benzaldehyde, paraformaldehyde and furfural in coal tar or its distillation fraction, product is filtrated to get phenolic resin by closed rotary drum vacuum filter, obtain the dephenolize coal tar containing solvent simultaneously, dephenolize oil containing solvent is carried out into rectifying and realizes that water is separated with solvent, and solvent is reclaimed so that solvent can be reused.Phenolic resin prepared and phenolic aldehyde polymerisation using cheap phenol content middle coalite tar higher and aldehyde material in this technique there is, the aldehydes matter in coalite tar in removing can be substantially completely reacted by single step reaction, except phenol step is simple, solvent is recycled simultaneously, it is economic and environment-friendly, it is a kind of process is simple, production run low cost, remarkable in economical benefits, it is easy to industrialized coal tar processing new method.
Description
Technical field
The utility model is related to coal tar processing technology field, and specifically a kind of coal tar prepares the dress of phenolic resin
Put.
Background technology
With gradually decreasing for world petroleum resource, used as a kind of valuable industrial chemicals, it acts on day to coal tar
Benefit is highlighted.The middle coalite tar more for amount containing phenol is mainly produced by Low Temperature Pyrolysis Process in coal, and it is mainly by neutrality
Compound (aliphatic hydrocarbon and aromatic hydrocarbon), acid compound (predominantly phenols content 30%~40%), oxygen-containing and sulfur-containing compound
(content is few) is constituted.Phenolic compound (particularly phenol and cresols) at the aspect such as industry, agricultural, national defence, medical and health all
Extensive application.For constituting sufficiently complex coal tar, current conventional method in coal tar phenolic compound point
It is higher from Transformation Application process complexity, pollution more serious, energy consumption.In order to solve this problem, how by the phenol in coal tar
Class further carries out economical rationality, environment-friendly utilization becomes countries in the world concern and research focus.
Phenolic resin has mechanical strength higher because of it, heat-resist, fire retardant, low toxicity, low smoke, can be with other polies
Thing is blended, realize high performance and be widely used in the national economy such as Aero-Space, automobile, electronics, machinery, communications and transportation each
Field.But as the important industrial chemicals of production phenolic resin, the yield and use direction and price pair higher of phenol
The yield effect of phenolic resin is very big.So finding production application of the cheap phenol source for alleviating phenolic resin will have far-reaching
Meaning
At present for coal tar utilization, occur in that in succession in recent years middle coalite tar hydrogenation of total effluent made fuel oil and
Some demonstrative projects such as delayed coking-hydrogenation made fuel oil, these projects are not carried out for the phenolic compound in coal tar
Removing is utilized, but carries out direct hydrogenation directly as hydrogenating materials, and this allows for the increase of oil product carbon left, taste after hydrogenation
It is smelly, discoloration, it is bad etc. with corrosivity and combustion case.And phenol technique is put forward for the industrialized acid-base method of tradition, due to
Energy consumption is big during it, multi-process handling and numerous and diverse, product each component is separated and utilization ratio is relatively low, especially for senior phenolic acid
Alkaline process can not propose to utilize, and phenol wastewater amount is big, environmental pollution is serious etc., and problems urgently improve.And for production phenolic aldehyde
The aldehydes matter of resin is larger for the production application influence of phenolic resin, so find cheap phenol source being given birth to for phenolic resin
Produce and develop and be particularly significant.
The method of patent CN1693331A, although coal tar is make use of when phenolic resin is prepared, but in preparation process
In only make use of minimal amount of coal tar as production phenol-formaldehyde resin modified raw material, not major part utilize coal tar, to coal
Tar utilization rate is relatively low.
The method of patent CN103289718A, although make use of coal tar and aldehyde material production phenolic resin, but due to
In its course of reaction, coal tar under heated condition still has certain viscosity, along be polymerized with aldehyde material with
Viscosity increases very fast afterwards, can stop reaction because of larger cannot the stirring of viscosity too early, causes the insufficient contact part of reactive material
Reaction conversion ratio it is relatively low and reaction produce phenolic resin it is uneven, increased the later stage phenolic resin separation on difficulty, and
It does not suggest that the specific method for separating phenolic resin.
In sum, prepared currently with aldehydes matter cheap in coal tar and aldehydes reaction the report of phenolic resin compared with
It is few, and at present all in the laboratory research stage, more or less all there are problems that.How to separate in making good use of coal tar
Aldehydes matter, it is particularly significant to coal tar following process.Cheap aldehydes matter prepares phenolic aldehyde tree with aldehydes reaction in coal tar
Fat is coal tar kind material classify the basis for utilizing, while the production to phenolic resin is significant.Therefore need
New method is opened up to realize the efficient utilization and reprocessing of coal tar.
Utility model content
To overcome the problem in currently available technology, the purpose of this utility model is to provide one kind coal tar to prepare phenol
The device of urea formaldehyde, using the method for heterogeneous polymerization, using relatively inexpensive coal tar as raw material, can have using phenolic aldehyde polymerization
What is imitated is converted into widely used phenolic resin by the aldehydes matter in coal tar, enables component classification sub-prime profit in coal tar
With, and for coal tar later use is laid a good foundation, its obvious energy conservation, operating condition are gentle, environmental protection, it is environmentally friendly,
Equipment investment is few, continuously-running and be easily enlarged production scale
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of coal tar prepare the device of phenolic resin, including aldehyde material storage tank, coal tar oil tank, catalyst storage tank with
And solvent tank and coal tar reactor, aldehyde material storage tank, coal tar oil tank, catalyst storage tank and solvent tank bottom
It is connected with coal tar reactor top, coal tar reactor bottom is connected with closed rotary drum vacuum filter entrance, closing
It is connected with phenolic resin storage tank at the rotary drum scraper of formula rotary drum vacuum filter.
The utility model is further improved, and the filtering oil tank top is provided with vavuum pump.
The utility model is further improved, between the coal tar reactor and closed rotary drum vacuum filter
It is provided with reaction effluent exchanger.
The utility model is further improved, and the distribution pipe of the closed rotary drum vacuum filter is stored up with oil strain is crossed
Tank top is connected
The utility model is further improved, and the filtering oil tank bottom is connected with oil strain feed pump entrance is crossed,
Cross the outlet of oil strain feed pump to be connected with oil strain feed exchanger import is crossed, cross the outlet of oil strain feed exchanger with filtering oil rectifier
Charging aperture is connected.
The utility model is further improved, and filtering oil rectifier tower top is connected with overhead condenser entrance, tower top
Condensator outlet separates upper end with gaseous condensate and is connected, gaseous condensate knockout drum bottom and overhead reflux pump intake phase
Even, overhead reflux pump discharge is connected with rectifying column tower top top.
The utility model is further improved, and the filtering oil rectifier bottom of towe discharge pipe is connected with tower top and boils again
Device.
The utility model is further improved, the filtering oil rectifier bottom of towe discharge pipe also with dephenolize oil tank
It is connected.
Compared with prior art, the utility model has the advantage that：The utility model is stored up by setting aldehyde material
Tank, coal tar oil tank, catalyst storage tank and solvent tank and coal tar reactor, aldehyde material storage tank, coal tar oil tank,
Catalyst storage tank and solvent tank bottom with coal tar reactor top be connected, coal tar reactor bottom with closed turn
Drum vacuum filter entrance is connected, and is connected with phenolic resin storage tank at the rotary drum scraper of closed rotary drum vacuum filter；Closing
The distribution pipe of formula rotary drum vacuum filter is connected with filtering oil tank top.The present apparatus is low in using cheap phenol content higher
There is phenolic aldehyde polymerisation in coal tar reactor and prepare phenolic resin in warm coal tar, can by single step reaction with aldehyde material
Substantially completely the aldehydes matter in reaction removing in coalite tar, is a kind of process is simple, production run except phenol step is simple
Low cost, remarkable in economical benefits, it is easy to industrialized coal tar processing new equipment.
Brief description of the drawings
Fig. 1 is process chart prepared by phenolic resin；
The TIC of coalite tar heavy oil in Fig. 2；
Fig. 3 is the TIC (acid catalysis) of middle coalite tar heavy oil removal of phenolic compounds remaining oil；
Fig. 4 is middle coalite tar heavy oil>300 DEG C of TICs of cut；
Fig. 5 is middle coalite tar heavy oil>300 DEG C of TICs (base catalysis) of distillate dephenolizing oil；
Coalite tar in Fig. 6>300 DEG C of cuts and its prepare the FTIR spectrograms (base catalysis) of phenolic resin；
The TIC (acid catalysis) of coalite tar heavy oil dephenolize oil (benzaldehyde) in Fig. 7；
Coalite tar in Fig. 8>Phenolic resin FTIR spectrograms (acid catalysis) prepared by 300 DEG C of cut benzaldehyde reactions
In figure, 1, aldehyde material storage tank, 2, coal tar oil tank, 3, catalyst storage tank, 4, solvent tank, 5, coal tar reaction
Kettle, 6, reaction effluent exchanger, 7, closed rotary drum vacuum filter, 8, phenolic resin storage tank, 9, vavuum pump, 10, cross oil strain
Storage tank, 11, cross oil strain feed pump, 12, cross oil strain feed exchanger, 13, filtering oil rectifier, 14, overhead condenser, 15, gas
Phase condensate liquid knockout drum, 16, overhead reflux pump, 17, tower reactor reboiler, 18, dephenolize coal tar oil tank.
Specific embodiment
The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.
Closed rotary drum vacuum filter 7 is on the basis of existing rotary drum vacuum filter, to enter in the utility model
Row is improved, and makes enclosed construction, and structure of other structures still with rotary drum vacuum filter in the prior art is identical.
Referring to Fig. 1, one kind prepares phenolic resin device based on coal tar to be included：Aldehyde material storage tank 1, coal tar oil tank 2,
Catalyst storage tank 3, solvent tank 4, coal tar reactor 5, reaction effluent exchanger 6, closed rotary drum vacuum filter 7, phenol
Urea formaldehyde storage tank 8, vavuum pump 9, filtering oil tank 10, oil strain feed pump 11, oil strain feed exchanger 12, filtering olein excessively excessively evaporate
Tower 13, overhead condenser 14, gaseous condensate knockout drum 15, overhead reflux pump 16, tower reactor reboiler 17 and dephenolize coal tar
Storage tank 18.
Referring to Fig. 1, the bottom of aldehyde material storage tank 1 is connected with the top of coal tar reactor 5；The bottom of coal tar oil tank 2 and coal
The top of tar reactor 5 is connected；The bottom of catalyst storage tank 3 is connected with the top of coal tar reactor 5；The bottom of solvent tank 4 and coal
The top of tar reactor 5 is connected；The bottom of coal tar reactor 5 is connected with the reaction import of effluent exchanger 6；Reaction effluent exchanger
6 outlets are connected with the entrance of closed rotary drum vacuum filter 7, at the rotary drum scraper of closed rotary drum vacuum filter 7 and phenolic aldehyde
Resin storage tank 8 is connected；The distribution pipe of closed rotary drum vacuum filter 7 is connected with the top of filtering oil tank 10；Filtering oil tank
10 tops are connected with the entrance of vavuum pump 9；The filtering bottom of oil tank 10 is connected with the entrance of oil strain feed pump 11 is crossed, and crosses oil strain feed pump
11 outlets are connected with the import of oil strain feed exchanger 12 is crossed, and cross the outlet of oil strain feed exchanger 12 and are fed with filtering oil rectifier 13
Mouth is connected, and the filtering tower top of oil rectifier 13 is connected with the entrance of overhead condenser 14, and overhead condenser 14 is exported and gaseous condensate
The top of knockout drum 15 is connected；The bottom of gaseous condensate knockout drum 15 is connected with the entrance of overhead reflux pump 16, and overhead reflux pump 16 goes out
Mouth is connected with filtering oil rectifier 13 tower top top；The entrance of tower top reboiler 17 and the filtering bottom of towe discharge pipe phase of oil rectifier 13
Even；Tower top reboiler 17 is exported and is connected with filtering oil rectifier 13 bottom, filter the bottom of towe discharge pipe of oil rectifier 13 also with take off
Carbolic oil storage tank 18 is connected.
Coal tar of the present utility model prepares the technique of phenolic resin, comprises the following steps：
1) reaction of coal tar and aldehyde material：Respectively by the coal tar from coal tar storage tank 2, aldehyde material storage tank 1
The catalyst of aldehyde material, the solvent of solvent tank 4 and catalyst storage tank 3 be continuously injected into the coal for continuously stirring by a certain percentage
In tar reactor 5, control the reaction temperature of coal tar for 40~180 DEG C, obtain reacted after certain reaction time
Mixture, mixture enters reaction effluent exchanger 6 through coal tar reactor lower pipeline, laggard to 20~40 DEG C by exchanging heat
Enter closed rotary drum vacuum filter 7.Wherein, coal tar and the mass ratio of aldehydes are 1：(0.9~1.2), coal tar and solvent
Mass ratio be 1：(1~10), coal tar is 1 with the mass ratio of catalyst：(0.03~0.2).The coal tar is middle low temperature
The distillation fraction of coal tar or middle coalite tar；The aldehyde material is formaldehyde, furfural, benzaldehyde or paraformaldehyde；It is described
Solvent is toluene or benzene；The catalyst is the mixture of any one or two kinds of sulfuric acid, oxalic acid, benzene sulfonic acid and hydrochloric acid, or
Catalyst is any one in NaOH, potassium hydroxide or two kinds of mixture；
2) separation of phenolic resin：By step 1) the filtrate of mixture reacted effluent exchanger 6 heat exchange enter into envelope
The slurry vessel of enclosed rotary drum vacuum filter 7, is then filtered through the fillter section of rotary drum to feed liquid, and filtrate is passed through on rotary drum
Filter cloth enters filter chamber, and filtering oil tank 10 is entered through filter chamber's distribution pipe, and filter cake is reached to be scraped at scraper and enters phenolic resin
Storage tank 8.In order to maintain closed rotary drum vacuum filter 7 can normal filtration, therefore need maintain filtering oil tank have certain
Vacuum, so being provided with vavuum pump 9 on filtering oil tank 10.
3) in dephenolize coal tar solvent recovery：Due to cross oil strain in containing solvent need to by contained recycled solvent, therefore
Filter oil pump in filtering oil tank 10 was entered into oil strain feed exchanger 12 by used oil strain feed pump 11, through exchanging heat with laggard
Entering to filter oil rectifier 13 carries out rectifying, and it is cold that the solvent that tower top rises enters gas phase after being condensed through overhead condenser 14 with a small amount of water
Lime set knockout drum 15, it is separated after solvent through the part of overhead reflux pump 16 squeeze into filtering oil rectifier 13 in backflow, one
Point it is back to solvent recovery tank, another part solvent is further separated into the Flushing nozzle of closed rotary drum vacuum filter 7 as washing
Liquid is rinsed to filter cake.A dephenolize coal tar part for filtering oil rectifier 13 tower reactor extraction enters tower through the boiling device 17 of tower reactor again
It is interior, it is partly into dephenolize coal tar oil tank 18.Wherein, the pressure for crossing oil strain force (forcing) pump 11 is 0.2~0.5MPa.
The utility model is a kind of based on heterogeneous polymerization method, and phenolic aldehyde tree is prepared using cheap middle coalite tar
Fat, is related to middle coalite tar Reaction Separation and reprocessing technology, and the method can not only produce phenolic resin, and can make
It is the base oil pre-treating technology that coal tar dephenolize is subsequent production pitch and hydrogenated fuel oil.The utility model technique saves numerous
Trivial puies forward phenol process, only by directly the aldehydes matter in coal tar substantially completely can be removed after a step phenol-formaldehyde reaction, while
The addition of solvent causes the reduction of reaction system viscosity, makes reaction evenly more complete, separates follow-up product and more holds
Easily, this technique can substantially reduce the hydrogen consumption in hydrogenated base oil hydrogenation process, while also prevent raw material to equipment
Corrosion, it is to avoid the shortcoming of oil quality difference after non-dephenolize coal tar hydrogenating, and directly given birth to as raw material with middle coalite tar
Phenolic resin is produced, for the production of phenolic resin provides a kind of new method, phenolic resin production is alleviated often by phenol source limit
The pressure of system.The utility model is a kind of process is simple, production run low cost, and the middle coalite tar of remarkable in economical benefits adds
Work new method.
Further, the dephenolize oil containing solvent is carried out into rectifying and realizes that water is separated with solvent, and solvent is returned
Receive so that solvent can be reused.
In order to illustrate effect of the present utility model, content of the present utility model is further elucidated with reference to example.
Experimental raw is to take from the coal tar of semi-coke factory of northern Shensi Fugu County, light oil (coal tar depositing reservoir layer waterborne), weight
The fundamental property that oil (tar depositing reservoir subsurface layer oil) is determined by GB is shown in Table 1.
The fundamental property of the coal tar heavy oil of table 1
Note：﹡ minusings
Embodiment 1-3 is with the heavy oil with component in table 1 in order to illustrate.
Embodiment 1
Phenolic aldehyde polymerization is carried out using the method for heterogeneous polymerization, with benzene or toluene as solvent, middle coalite tar is to supply phenol
Raw material is reacted with aldehyde material under catalyst action, dephenolize oil and phenolic resin is obtained, so as to reach with middle low temperature coal
Tar prepares the purpose of phenolic resin for raw material.In order to illustrate the utility model actual effect, using gas chromatography-mass spectrography
Instrument centering coalite tar and dephenolize oil have carried out compound mensuration.
Coalite tar heavy oil and formalin (37wt%) are reactant in selection, and toluene is solvent, mass fraction
98% concentrated sulfuric acid is catalyst, wherein, middle coalite tar heavy oil is 1 with the mass ratio of formaldehyde:0.97, middle coalite tar
Heavy oil is 1 with the mass ratio of solvent:2, middle coalite tar heavy oil is 1 with the mass ratio of catalyst:0.06, control coal tar is anti-
Answer the interior reaction temperature of kettle 5 for 50~90 DEG C, the reaction time is 2-3h.After above-mentioned flow is finished, using gas chromatography-mass spectrum
Combined instrument carries out composition analysis to product (predominantly dephenolize oil), is shown in Table 2, Fig. 2 and Fig. 3.
Coalite tar heavy oil and its dephenolize oil (acid catalysis) constituent part table in table 2
With reference to Fig. 2, Fig. 3 and Biao 2 result find, in northern Shensi in coalite tar be rich in phenolic compound, by with first
After aldehyde reaction, phenolic compound is not found in dephenolize oil.This is shown, can be removed by so simple phenolic aldehyde polymerisation
Phenolic compound in middle coalite tar simultaneously produces phenolic resin.
Embodiment 2
Coalite tar heavy oil in selection>300 DEG C of distillation part is reactant with formalin (37wt%), and toluene is molten
Agent, NaOH solution (40wt%) is catalyst, wherein, coalite tar heavy oil>300 DEG C distillation part is with the mass ratio of formaldehyde
1:1.15, coalite tar heavy oil>300 DEG C distillation part is 1 with the mass ratio of solvent:5, coalite tar heavy oil>300 DEG C
Distillation part is 1 with the mass ratio of catalyst:0.18, it is 40~90 DEG C, reaction time to control the interior reaction temperature of coal tar reactor 5
1.5-2h.After above-mentioned flow is finished, product (predominantly dephenolize oil) is constituted using gas chromatograph-mass spectrometer (GC-MS)
Analysis, is analyzed using infrared spectrum to phenolic resin, sees Fig. 4, Fig. 5 and Biao 3.
Coalite tar heavy oil in table 3>300 DEG C of cuts and its dephenolize oil (base catalysis) constituent part table
Found with reference to the result of Fig. 4, Fig. 5 and Biao 3, middle coalite tar heavy oil>After 300 DEG C of cuts react with formaldehyde,
Phenolic compound is not found in dephenolize oil.This shows, low temperature coal tar in being removed by so simple phenolic aldehyde polymerisation
Oily heavy oil>Phenolic compound in 300 DEG C of cuts, and can be to heavy oil>300 DEG C of cuts play a part of separation；By Fig. 6 knots
Fruit discovery, middle coalite tar heavy oil>300 DEG C of cuts react with formaldehyde, and possess phenolic aldehyde by the isolated material of solvent
The infrared spectrum characteristic peak of resin.
Embodiment 3
Low temperature coal tar heavy oil in selection>300 DEG C of cuts are reactant with benzaldehyde, and toluene is solvent, and p-methyl benzenesulfonic acid is
Catalyst, wherein, middle low temperature coal tar heavy oil>300 DEG C of cuts are 1 with the mass ratio of benzaldehyde:1.2, middle low temperature coal tar heavy oil>
300 DEG C of cuts are 1 with the mass ratio of solvent:10, middle low temperature coal tar heavy oil>300 DEG C of cuts are 1 with the mass ratio of catalyst:
0.1, at 140~180 DEG C, the reaction time is 4~6h for reaction temperature control.After above-mentioned flow is finished, using gas-chromatography-
GC-MS carries out composition analysis to product (predominantly dephenolize oil), sees Fig. 4, Fig. 7, table 2 and table 4.
Coalite tar heavy oil in table 4>300 DEG C of distillate dephenolizing oil (benzaldehyde, acid catalysis) constituent part tables
Found with reference to the result of Fig. 4 and Fig. 7, table 3 and table 4, middle coalite tar heavy oil>300 DEG C of cuts are anti-with benzaldehyde
Ying Hou, phenolic compound is not had found in dephenolize oil.This shows, low in being removed by so simple phenolic aldehyde polymerisation
Warm coal tar heavy oil>Phenolic compound in 300 DEG C of cuts, and can be to heavy oil>300 DEG C of cuts play a part of separation；
Found by Fig. 8 results, middle coalite tar heavy oil reacts with benzaldehyde, and possesses phenolic aldehyde tree by the isolated material of solvent
The infrared spectrum characteristic peak of fat.
Embodiment 4
1) reaction of coal tar and aldehyde material：Coal tar, aldehyde material, solvent and catalyst are continuously injected into and are continuously stirred
In the coal tar reactor 5 mixed, 6h is reacted at 40~80 DEG C, obtain mixture, the reacted effluent exchanger 6 of mixture exchanges heat
To temperature be 40 DEG C after enter closed rotary drum vacuum filter 7；Wherein, the coal tar and the mass ratio of aldehydes are 1：0.9,
Coal tar is 1 with the mass ratio of solvent：1, coal tar is 1 with the mass ratio of catalyst：0.2.
The coal tar is middle coalite tar.
The aldehyde material is furfural；
The solvent is toluene.
The catalyst is the mixture of benzene sulfonic acid and hydrochloric acid.
2) separation of phenolic resin：Filtrate and filter residue are respectively obtained through the continuous filtering of closed rotary drum vacuum filter 7,
Gained filtrate is stored in filtering oil tank 10, obtains oil strain；Gained filter cake is stored in phenolic resin storage tank 8, phenolic aldehyde is obtained
Resin.
3) in dephenolize coal tar solvent recovery：Oil strain will be crossed by oil strain feed exchanger 12 in filtering oil tank 10
Rectifying is carried out into filtering oil rectifier 13 after heat exchange, the solvent that tower top rises enters after being condensed through overhead condenser 14 with water
Gaseous condensate knockout drum 15, separated rear solvent flows into backflow in filtering oil rectifier 13 through the part of overhead reflux pump 16,
A part is back to solvent recovery tank 4, and another part solvent to filter cake into rushing in closed rotary drum vacuum filter 7
Wash.A dephenolize coal tar part for filtering oil rectifier 13 tower reactor extraction enters filtering oil rectifier 13 through the boiling device 17 of tower reactor again
Interior, another part enters dephenolize coal tar oil tank 18.
Embodiment 5
1) reaction of coal tar and aldehyde material：Coal tar, aldehyde material, solvent and catalyst are continuously injected into and are continuously stirred
In the coal tar reactor 5 mixed, 1.5h is reacted at 100~180 DEG C, obtain mixture, the reacted effluent exchanger 6 of mixture
Exchange heat to temperature to enter closed rotary drum vacuum filter 7 after 20 DEG C；Wherein, the coal tar and the mass ratio of aldehydes are 1：
1.1, coal tar is 1 with the mass ratio of solvent：3, coal tar is 1 with the mass ratio of catalyst：0.03.
The coal tar is the distillation fraction of middle coalite tar.
The aldehyde material is paraformaldehyde；
The solvent is toluene.
The catalyst is the mixture of NaOH and potassium hydroxide.
2) separation of phenolic resin：Filtrate and filter residue are respectively obtained through the continuous filtering of closed rotary drum vacuum filter 7,
Gained filtrate is stored in filtering oil tank 10, obtains oil strain；Gained filter cake is stored in phenolic resin storage tank 8, phenolic aldehyde is obtained
Resin.
3) in dephenolize coal tar solvent recovery：Oil strain will be crossed by oil strain feed exchanger 12 in filtering oil tank 10
Rectifying is carried out into filtering oil rectifier 13 after heat exchange, the solvent that tower top rises enters after being condensed through overhead condenser 14 with water
Gaseous condensate knockout drum 15, separated rear solvent flows into backflow in filtering oil rectifier 13 through the part of overhead reflux pump 16,
A part is back to solvent recovery tank 4, and another part solvent to filter cake into rushing in closed rotary drum vacuum filter 7
Wash.A dephenolize coal tar part for filtering oil rectifier 13 tower reactor extraction enters filtering oil rectifier 13 through the boiling device 17 of tower reactor again
Interior, another part enters dephenolize coal tar oil tank 18.
Claims (8)
1. a kind of coal tar prepares the device of phenolic resin, it is characterised in that including aldehyde material storage tank (1), coal tar oil tank
(2), catalyst storage tank (3) and solvent tank (4) and coal tar reactor (5), aldehyde material storage tank (1), coal tar storage
Tank (2), catalyst storage tank (3) and solvent tank (4) bottom are connected with coal tar reactor (5) top, coal tar reaction
Kettle (5) bottom is connected with closed rotary drum vacuum filter (7) entrance, the rotary drum scraper of closed rotary drum vacuum filter (7)
Place is connected with phenolic resin storage tank (8).
2. coal tar prepares the device of phenolic resin according to claim 1, it is characterised in that the filtering oil tank (10)
Top is provided with vavuum pump (9).
3. coal tar prepares the device of phenolic resin according to claim 1, it is characterised in that the coal tar reactor
(5) reaction effluent exchanger (6) is provided between closed rotary drum vacuum filter (7).
4. coal tar prepares the device of phenolic resin according to claim 3, it is characterised in that the closed rotary-drum vacuum
The distribution pipe of filter (7) is connected with filtering oil tank (10) top.
5. coal tar prepares the device of phenolic resin according to claim 4, it is characterised in that the filtering oil tank (10)
Bottom is connected with oil strain feed pump (11) entrance is crossed, and crosses oil strain feed pump (11) outlet and crosses oil strain feed exchanger (12) import
It is connected, crosses oil strain feed exchanger (12) outlet and be connected with filtering oil rectifier (13) charging aperture.
6. coal tar prepares the device of phenolic resin according to claim 5, it is characterised in that the filtering oil rectifier
(13) tower top is connected with overhead condenser (14) entrance, and overhead condenser (14) is exported and gaseous condensate knockout drum (15) top
It is connected, gaseous condensate knockout drum (15) bottom is connected with overhead reflux pump (16) entrance, overhead reflux pump (16) is exported and essence
Tower (13) tower top top is evaporated to be connected.
7. coal tar prepares the device of phenolic resin according to claim 5, it is characterised in that the filtering oil rectifier
(13) bottom of towe discharge pipe is connected with tower top reboiler (17).
8. the coal tar according to claim 5 or 7 prepares the device of phenolic resin, it is characterised in that the filtering olein evaporates
Tower (13) bottom of towe discharge pipe is also connected with dephenolize oil tank (18).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543389A (en) * | 2016-12-07 | 2017-03-29 | 西北大学 | A kind of coal tar prepares the technique and device of phenolic resin |
| CN112791680A (en) * | 2020-12-24 | 2021-05-14 | 华阳新材料科技集团有限公司 | A nickel phosphorus complex synthesis system for adiponitrile production |
-
2016
- 2016-12-07 CN CN201621337055.2U patent/CN206266474U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106543389A (en) * | 2016-12-07 | 2017-03-29 | 西北大学 | A kind of coal tar prepares the technique and device of phenolic resin |
| CN112791680A (en) * | 2020-12-24 | 2021-05-14 | 华阳新材料科技集团有限公司 | A nickel phosphorus complex synthesis system for adiponitrile production |
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