CN109294610A - For the Production Process for Modified Pitch and device of high QI and high TI tar stock - Google Patents
For the Production Process for Modified Pitch and device of high QI and high TI tar stock Download PDFInfo
- Publication number
- CN109294610A CN109294610A CN201811326173.7A CN201811326173A CN109294610A CN 109294610 A CN109294610 A CN 109294610A CN 201811326173 A CN201811326173 A CN 201811326173A CN 109294610 A CN109294610 A CN 109294610A
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- China
- Prior art keywords
- tar
- pitch
- stripper
- production process
- stock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
Abstract
The invention discloses a kind of Production Process for Modified Pitch and device for high QI and high TI tar stock, belong to coal tar processing technology field.The present invention is directed to high QI, TI tar stock, provide a kind of Production Process for Modified Pitch, it include: that tar is sent into Tar tube furnace after heating polymerization, flash separation in into coke tar distillation tower, the maltha of coke tar distillation tower extraction enters in stripper, it is passed through superheated steam and carries out distillation separation, stripper bottom produces pitch to get modified coal tar pitch.The present invention is using stripping tower process, directly pitch TI, QI in tar are adjusted using the tubular heater polymerization of tar distillation system, superheated steam is carried out to pitch by stripper again and blows steaming, directly produce the modified coal tar pitch product for meeting GB, system energy consumption and save the cost are greatly reduced, while having stronger adaptability to the tar stock of high QI, TI.
Description
Technical field
The invention belongs to coal tar processing technology fields, and in particular to a kind of with high QI and the production modification of high TI tar stock
The technique and device of pitch.
Background technique
Modified coal tar pitch is the high value added product of production during coal tar processing, is widely used in electrolytic aluminium, carbon
The industries such as material, the Production Process for Modified Pitch of domestic tar production industry mainly use tube furnace or reaction kettle technique, add
Work process are as follows: tar heats under the conditions of normal pressure or decompression operation through Tar tube furnace, is separated in coke tar distillation tower,
It produces mid temperature pitch (maltha), carbolineum, light oil, phenol naphthalene and washes three media such as mixed, the modified pitch of the mid temperature pitch isolated
Reaction kettle or pitch tube furnace carry out heating polymerization, produce the modified coal tar pitch product for meeting GB.
But the polymerization of reaction kettle heating at present or the modes such as pitch diamond heating produce modified coal tar pitch, that there are energy consumptions is high,
The problems such as pipeline easily blocks, comprehensive energy consumption about account for 30% or so of coal tar processing specific energy consumption, and to high QI (quinoline non-soluble
Object), the adaptability of high TI (toluene insolubles) tar stock it is not strong, when tar stock QI, TI are higher, easily there is modified coal tar pitch
The underproof situation of product.
Summary of the invention
The present invention is to solve modified coal tar pitch produces low qualified when tar stock QI, TI are higher at present, energy consumption is high
The technical issues of.
The technical proposal adopted by the invention to solve the above technical problems is that providing a kind of for high QI and high TI tar
The Production Process for Modified Pitch of raw material comprising following steps: raw tar is sent into Tar tube furnace, it is heated to 385~
After 395 DEG C, into coke tar distillation tower in carry out flash separation, the maltha of coke tar distillation tower extraction enters in stripper, to vapour
It is passed through superheated steam in stripper and carries out distillation separation, produces and bends oil into carbolineum system, stripper bottom produces pitch to get changing
Matter pitch.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the tar
QI is that 1~9%, TI is 3~15%.
Further, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the coke
It is 10~15% that the QI of oil, which is 5~9%, TI,.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the maltha
Softening point be 90~100 DEG C, QI is that 8~12%, TI is 20~28%.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the overheat steaming
The water vapour that vapour is 400~550 DEG C.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the overheat steaming
The flow of vapour is 0.5~0.75t/t modified coal tar pitch.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the stripper
Head temperature temperature be 320~350 DEG C, so as to produce bend oil.
Wherein, described above in the Production Process for Modified Pitch of high QI and high TI tar stock, the modification drips
It is 26~34% that green QI, which is 6~15%, TI,.
In conjunction with Production Process for Modified Pitch of the invention, the present invention also provides described above for high QI and high TI coke
Device used by the Production Process for Modified Pitch of oily raw material comprising Tar tube furnace, coke tar distillation tower, stripper, overheat
Steam pipe, pitch extraction pipe and cooler；Wherein, Tar tube furnace connects coke tar distillation tower, and coke tar distillation tower connects stripper,
Stripper bottom connects overheated steam pipe, and stripper bottom connects pitch extraction pipe, and stripper top connects cooler.
The beneficial effects of the present invention are:
The present invention is polymerize using the tubular heater of tar distillation system directly to pitch in tar using stripping tower process
TI, QI are adjusted, then by stripper to pitch carry out superheated steam blow steaming, do not use pitch tube furnace or reaction kettle into
Row heating polymerization, directly produces the modified coal tar pitch product for meeting GB, saves deasphalting tube furnace and modified coal tar pitch reaction kettle technique,
System energy consumption is greatly reduced, through calculating, about 40 yuan of ton tar production cost can be saved, while to the tar stock of high QI, TI
There is stronger adaptability, in the case where traditional handicraft can not produce qualified products, this production technology can directly produce conjunction
The modified coal tar pitch product of lattice.
Detailed description of the invention
Fig. 1 is the device that the present invention produces modified coal tar pitch with high QI and high TI tar stock；Wherein, 1 is stripper, and 2 are
Cooler, 11 be overheated steam pipe, and 12 be pitch extraction pipe.
Specific embodiment
Specifically, being directed to the Production Process for Modified Pitch of high QI and high TI tar stock, comprising the following steps:
By raw tar be sent into Tar tube furnace in, after being heated to 385~395 DEG C, into coke tar distillation tower in dodged
Separation is steamed, the maltha of coke tar distillation tower extraction enters in stripper, superheated steam is passed through into stripper and carries out distillation separation,
Extraction bends oil and enters carbolineum system, and stripper bottom produces pitch to get modified coal tar pitch.
Traditional reaction kettle technique or pitch tubular type furnace technology are only applicable to the original that QI is 1~5%, TI is 3~10% or so
Easily there is the underproof situation of modified coal tar pitch product as the QI of raw tar and TI higher in material tar；The present invention passes through to work
The optimization of skill and equipment has good adaptability to the raw tar that QI is 1~9%, TI is 3~15%, and especially suitable
For the raw tar that QI is 5~9%, TI is 10~15%.
In present invention process, raw tar is heated to 385~395 DEG C (10 DEG C high compared with traditional handicraft in Tar tube furnace
Left and right), pitch is improved in the response intensity of Tar tube furnace, provides bigger operating flexibility for subsequent stripping tower process, thus
Produce qualified modified coal tar pitch；Tar by Tar tube furnace one-time heating polymerize, into coke tar distillation tower in carry out
Flash separation carries out initial gross separation to tar, is separated into carbolineum, pitch, phenol naphthalene and washes three mixed etc., will produce the centre of modified coal tar pitch
Product maltha is segregated into stripper, and the softening point for controlling maltha is 90~100 DEG C, QI be 8~12%, TI be 20~
28%.
In present invention process, maltha does not use pitch tube furnace or reaction kettle carries out heating polymerization, but to stripping
It is passed through 400~550 DEG C of water vapour in tower, superheated steam is carried out to pitch and blows steaming, system energy consumption can be greatly lowered.Largely
Practice discovery, the flow of the superheated steam are 0.5~0.75t/t modified coal tar pitch；The head temperature temperature of the stripper is
320~350 DEG C, can be to all kinds of tar stocks, especially high QI and TI tar stock has stronger adaptability, in the wrong to produce
Oil.
The present invention is by improving technique, for high QI and high TI tar stock, can also obtain QI be 6~
The modified coal tar pitch that 15%, TI are 26~34%, can at least meet YB/T5194-2015 two-level index.
In conjunction with Production Process for Modified Pitch of the invention, the present invention also provides described above for high QI and high TI coke
Device used by the Production Process for Modified Pitch of oily raw material comprising Tar tube furnace, coke tar distillation tower, stripper, overheat
Steam pipe, pitch extraction pipe and cooler；Wherein, Tar tube furnace connects coke tar distillation tower, and coke tar distillation tower connects stripper,
Stripper bottom connects overheated steam pipe, and stripper bottom connects pitch extraction pipe, and stripper top connects cooler.
In conjunction with above-mentioned apparatus, present invention process specifically: raw tar is sent into Tar tube furnace, it is heated to 385~
After 395 DEG C, into coke tar distillation tower in carry out flash separation, the maltha of coke tar distillation tower extraction enters in stripper 1, passes through
Overheated steam pipe 11 is passed through superheated steam into stripper 1 and carries out distillation separation, produces and bends oil by connecting at the top of stripper 1
After cooler 2 carries out cooling, into carbolineum system, pitch is produced by the pitch of 1 bottom of stripper and produces pipe 12 to get modification
Pitch enters back into subsequent moulding process.
Below by embodiment, invention is further described in detail, but does not therefore limit the scope of the present invention
Among the embodiment described range.
Embodiment 1
The raw tar that QI is 7~8%, TI is 10~15% is sent into Tar tube furnace, is heated to 385~395 DEG C
Afterwards, into flash separation is carried out in coke tar distillation tower, isolated softening point is 90~100 DEG C, QI is 8~12%, TI 20
~28% maltha, maltha enter in stripper 1, and 460~500 DEG C are passed through into stripper 1 by overheated steam pipe 11
Water vapour carry out distillation separation, water vapour intake is 0.6t steam/t modified coal tar pitch, produces and bends oil and pass through 1 top of stripper
Cooler 2 carry out it is cooling after, into carbolineum system, the head temperature temperature of stripper is 330~340 DEG C, and extraction pitch is logical
The pitch extraction pipe 12 for crossing 1 bottom of stripper, obtains modified coal tar pitch product, and QI meets up to 11~14%, TI up to 28~34%
Meet YB/T5194-2015 two-level index.
Comparative example 1
The raw tar that QI is 7~8%, TI is 10~15% is sent into Tar tube furnace, is heated to 375~385 DEG C
Afterwards, isolated soft into carrying out flash separation, gas-fired amount and tubular type heater outlet temperature bunch grade adjustment in coke tar distillation tower
Changing point is 85~95 DEG C, the maltha that QI is 8~12%, TI is 20~28%, and maltha is heated in pitch reaction kettle
Polymerization, kettle is interior to use heated by gas, and kettle top extraction flash oil enters carbolineum system, and bottom produces its QI of modified coal tar pitch product up to 16
~19%, TI exceeds national standard range, is not able to satisfy user demand up to 34~38%.
Claims (9)
1. being directed to the Production Process for Modified Pitch of high QI and high TI tar stock, it is characterised in that: the following steps are included: by raw material
Tar be sent into Tar tube furnace in, after being heated to 385~395 DEG C, into coke tar distillation tower in carry out flash separation, tar distillation
The maltha of tower extraction enters in stripper, and superheated steam is passed through into stripper and carries out distillation separation, produces and bends oil into anthracene
Oil system, stripper bottom produce pitch to get modified coal tar pitch.
2. the Production Process for Modified Pitch according to claim 1 for high QI and high TI tar stock, it is characterised in that:
The QI of the tar is that 1~9%, TI is 3~15%.
3. the Production Process for Modified Pitch according to claim 2 for high QI and high TI tar stock, it is characterised in that:
The QI of the tar is that 5~9%, TI is 10~15%.
4. the Production Process for Modified Pitch according to claim 1 for high QI and high TI tar stock, it is characterised in that:
The softening point of the maltha is 90~100 DEG C, and QI is that 8~12%, TI is 20~28%.
5. the Production Process for Modified Pitch according to claim 1 for high QI and high TI tar stock, it is characterised in that:
The water vapour that the superheated steam is 400~550 DEG C.
6. the Production Process for Modified Pitch according to claim 1 for high QI and high TI tar stock, it is characterised in that:
The flow of the superheated steam is 0.5~0.75t/t modified coal tar pitch.
7. the Production Process for Modified Pitch according to claim 1 for high QI and high TI tar stock, it is characterised in that:
The head temperature temperature of the stripper is 320~350 DEG C.
8. described in any item Production Process for Modified Pitch for high QI and high TI tar stock according to claim 1~7,
Be characterized in that: the QI of the modified coal tar pitch is that 6~15%, TI is 26~34%.
9. the Production Process for Modified Pitch according to any one of claims 1 to 8 for high QI and high TI tar stock is used
Device, it is characterised in that: including Tar tube furnace, coke tar distillation tower, stripper, overheated steam pipe and cooler；Wherein, burnt
Oil pipe type furnace connects coke tar distillation tower, and coke tar distillation tower connects stripper, and stripper bottom connection overheated steam pipe and pitch are adopted
Outlet pipe, stripper top connect cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326173.7A CN109294610A (en) | 2018-11-08 | 2018-11-08 | For the Production Process for Modified Pitch and device of high QI and high TI tar stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811326173.7A CN109294610A (en) | 2018-11-08 | 2018-11-08 | For the Production Process for Modified Pitch and device of high QI and high TI tar stock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109294610A true CN109294610A (en) | 2019-02-01 |
Family
ID=65146178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811326173.7A Pending CN109294610A (en) | 2018-11-08 | 2018-11-08 | For the Production Process for Modified Pitch and device of high QI and high TI tar stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109294610A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125412A (en) * | 1975-01-19 | 1976-11-01 | Inst Technologii Nafty | Composite of asphalt |
| CN101775307A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Method for preparing hard asphalt and modified asphalt and device thereof |
-
2018
- 2018-11-08 CN CN201811326173.7A patent/CN109294610A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125412A (en) * | 1975-01-19 | 1976-11-01 | Inst Technologii Nafty | Composite of asphalt |
| CN101775307A (en) * | 2010-02-21 | 2010-07-14 | 河南海星化工科技有限公司 | Method for preparing hard asphalt and modified asphalt and device thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王元顺等: "改质沥青生产工艺的开发与应用", 《山东化工》 * |
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