CN1051070C - Two-stage crystallization method for extracting coarse anthracene from anthracene oil - Google Patents
Two-stage crystallization method for extracting coarse anthracene from anthracene oil Download PDFInfo
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- CN1051070C CN1051070C CN96118957A CN96118957A CN1051070C CN 1051070 C CN1051070 C CN 1051070C CN 96118957 A CN96118957 A CN 96118957A CN 96118957 A CN96118957 A CN 96118957A CN 1051070 C CN1051070 C CN 1051070C
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- anthracene
- carbolineum
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Abstract
The present invention relates to a two-stage crystallization method for extracting crude anthracene from anthracene oil. The present invention is characterized in that the goals of improving the crude anthracene product quality and improving the yield are achieved through properly improving the crystallization temperature in the first stage and adopting a method of mixing semi crude anthracene obtained by the process of the present invention back to anthracene oil raw materials for cyclic use; because the crystallization temperature in the first stage is properly improved, and the crystallization temperature in the second stage is low, the quality of the obtained decrystallized anthracene oil conforms to the Chinese wood preserving oil standard; in addition, the technical process has simple technical process and short flow path, so the cost is low, and the large-scale production is easy to realize.
Description
The present invention relates to a kind of processing method of from a carbolineum, extracting crude anthracene with crystallization process.
The most of manufacturer production crude anthracenes of China also prolong one section crystallization process with the Soviet Union always, and the crude anthracene quality product that this method is produced can only reach national grade ii standard, and of poor quality, yield is low, the production cost height, and labor strength is big, severe operational environment.
The invention of the disclosed Jiuquan Iron ﹠ Steel Co. of CN1080276A patent of invention " extracting the method for crude anthracene from carbolineum " is recrystallization method, be to utilize the method that improves carbolineum anthracene content and carbolineum Tc, increase the anthracene content in the crude anthracene product, to improve the quality of crude anthracene product.But the quality of crude anthracene product not only depends on the anthracene content in the crude anthracene, also depends on other index.The crude anthracene product that this method makes, its anthracene content is to have improved, but its oleaginousness and water content are undesirable.Since when first section crystallization, get only half crude anthracene of 25% anthracene content, no crude anthracene product, but the crude anthracene product is just arranged when second section crystallization, just obtain to take off brilliant carbolineum during the 3rd section crystallization.Make complex technical process like this, long flow path should not be realized maximizing.Second section Tc carried De Taigao, improved cost, and centrifugal raffinate anthracene content is increased.
In view of the problems referred to above that exist, the objective of the invention is to develop a kind of two-stage crystallization method that from a carbolineum, extracts crude anthracene, not only can improve the quality of crude anthracene product, and can improve the yield of crude anthracene product, and simplified technology, cost is low, also can guarantee to take off the quality of brilliant carbolineum.
For realizing purpose of the present invention, the technical measures of taking are a kind of two-stage crystallization methods that extract crude anthracene from a carbolineum of design, it is characterized in that being heated to 80～95 ℃, anthracene content is that 5～8% a carbolineum slowly cools under 45～55 ℃ the temperature and carries out one section crystallization, after centrifugation, promptly get anthracene content and be 38～42% crude anthracene product; Raffinate after the separation is heated to 50～60 ℃, slowly cools under 32～36 ℃ the temperature to carry out two sections crystallizations again, and to isolate anthracene content after filtration be 20～22% half crude anthracene and take off brilliant carbolineum, and half crude anthracene is returned is mixed with a carbolineum raw material again recycles.
Introduce the present invention extracts the two-stage crystallization method of crude anthracene from a carbolineum detailed content below in conjunction with drawings and Examples.
Accompanying drawing is the process flow sheet that extracts the two-stage crystallization method of crude anthracene from a carbolineum.
In the accompanying drawing, a carbolineum storage tank (1), one section crystallizer (2), centrifuge (3), two sections crystallizers (4), vacuum Filter (5), scratch board conveyor (6), crude anthracene product library (7), take off brilliant carbolineum groove (8), scratch board conveyor (9), mixed Join groove (10) and link together by pipeline P1, P2, P3, P4, P5, P6, P7, a carbolineum storage tank (1) is by pipe Road P8 links to each other with the carbolineum source of coal tar distillation workshop section.
It is 5～8% a carbolineum that coal tar distillation workshop section produces anthracene content, sends into a carbolineum through pipeline P8 Storage tank (1) rises to 80～95 ℃ through heating, sends into one section crystallizer (2) by the P1 pipeline, through Slow cooling Carry out one section crystallization during to 45～55 ℃. One section crystallized stock is sent into centrifuge (3) through the P2 pipeline and is carried out solid-liquid Separate, it is 38～42% crude anthracene product that the solid crystal material that obtains is anthracene content, this crude anthracene product warp Scraping transporter (6) is sent into crude anthracene product library (7) and is stored. Because one section crystallization temperature is higher, can greatly improve The quality of crude anthracene product makes wherein anthracene content, oil content, water content all be better than the crude anthracene that other method is produced Product. Though one section crystallization temperature has improved, and is more suitable, so cost is lower. Raffinate after the separation is through adding Heat is sent into two sections crystallizers (4) by pipeline P3 after 50～60 ℃, when slowly cooling to 32～36 ℃, Carry out two sections crystallizations, again two sections crystallized stocks are sent into vacuum filter (5) through the P4 pipeline and filter, separate Go out anthracene content and be 20～22% half crude anthracene, through scratch board conveyor (9) send into the groove that is mixed (10) and pipeline P5 from The carbolineum that one carbolineum storage tank (1) is sent here all closes, and sends into carbolineum storage tank (a 1) conduct by the P6 pipeline after the heating One section crystallization raw material so recycles, and can greatly improve the yield of crude anthracene product. Simultaneously, because with anthracene content being 20～22% half crude anthracene joins in the carbolineum raw material, can increase the nucleus of anthracene crystallization, can accelerate the anthracene crystallization Growth, increase crystalline particle, reach the purpose that improves the crude anthracene quality. The raffinate that isolated by vacuum filtration is come out, namely For taking off brilliant carbolineum, because one section crystallization temperature improves suitably, two sections crystallization temperatures are lower, take off brilliant anthracene under the normal temperature Oil does not have crystal to separate out, thus take off the quality standard that brilliant carbolineum can reach the GB coal-tar creosote solution, through P7 Pipeline is sent into it and is taken off brilliant carbolineum storage tank (8) storage.
Embodiment
Anshan iron and steel plant chemical general factory crude anthracene workshop section has carried out the commerical test of this technology in September, 94, with 10 tons be heated to 90 ℃, anthracene content be 8% a carbolineum as raw material, one section Tc is 50 ℃, 2.13 tons of anthracene contents are 42.18% crude anthracene product; And 7.87 tons of anthracene content are 4.13% raffinate, and raffinate is heated to 55 ℃, and two sections Tcs are 34 ℃, 0.75 ton of anthracene content is that 21.8% half crude anthracene and 7.12 tons take off brilliant carbolineum, anthracene content is 2.27%.
Crude anthracene quality product, productive rate row following table that the explained hereafter of crude anthracene product of producing by above-mentioned processing parameter and former technology and Jiuquan Iron ﹠ Steel Co.'s invention goes out compare:
From last table as seen, the crude anthracene good product quality of explained hereafter of the present invention, yield height.
Claims (1)
- A kind of two-stage crystallization method that from a carbolineum, extracts crude anthracene, it is characterized in that being heated to 80～95 ℃, to be 5～8% a carbolineum carry out one section crystallization slowly cooling under 45～55 ℃ the temperature to anthracene content, after centrifugation, promptly get anthracene content and be 38～42% crude anthracene product; Raffinate after the separation is heated to 50～60 ℃, carries out two sections crystallizations slowly cooling under 32～36 ℃ the temperature, and to isolate anthracene content after filtration be 20～22% half crude anthracene and take off brilliant carbolineum, and half crude anthracene is returned is mixed with a carbolineum raw material again recycles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96118957A CN1051070C (en) | 1996-02-09 | 1996-12-31 | Two-stage crystallization method for extracting coarse anthracene from anthracene oil |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115095 | 1996-02-09 | ||
| CN96115095.5 | 1996-02-09 | ||
| CN96118957A CN1051070C (en) | 1996-02-09 | 1996-12-31 | Two-stage crystallization method for extracting coarse anthracene from anthracene oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1161951A CN1161951A (en) | 1997-10-15 |
| CN1051070C true CN1051070C (en) | 2000-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96118957A Expired - Fee Related CN1051070C (en) | 1996-02-09 | 1996-12-31 | Two-stage crystallization method for extracting coarse anthracene from anthracene oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN1051070C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232318B (en) * | 2013-04-16 | 2016-04-06 | 中冶焦耐工程技术有限公司 | With a carbolineum be raw material production anthracene, the method for smart carbazole and luxuriant and rich with fragrance product and device |
| CN103848716B (en) * | 2014-03-20 | 2015-07-22 | 天津大学 | Emulsion crystallization method of preparing crude anthracene from anthracene oil |
| CN103980085B (en) * | 2014-05-20 | 2015-12-02 | 重庆路洋化工有限公司 | A kind of crude anthracene extraction system and extracting method |
| CN105693459B (en) * | 2016-03-08 | 2018-09-21 | 曲靖众一精细化工股份有限公司 | A kind of technique of rotary drum purification anthracene |
| CN114163289B (en) * | 2021-11-30 | 2022-08-30 | 江西黑猫炭黑股份有限公司 | System and method for extracting crude anthracene by continuous cooling crystallization method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2083068A (en) * | 1980-08-29 | 1982-03-17 | Inst Chemii Przemyslowej | A method for the separation and purification of anthracene from an anthracene oil |
| CN1080276A (en) * | 1992-06-20 | 1994-01-05 | 酒泉钢铁公司 | From carbolineum, extract the method for crude anthracene |
-
1996
- 1996-12-31 CN CN96118957A patent/CN1051070C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2083068A (en) * | 1980-08-29 | 1982-03-17 | Inst Chemii Przemyslowej | A method for the separation and purification of anthracene from an anthracene oil |
| CN1080276A (en) * | 1992-06-20 | 1994-01-05 | 酒泉钢铁公司 | From carbolineum, extract the method for crude anthracene |
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| Publication number | Publication date |
|---|---|
| CN1161951A (en) | 1997-10-15 |
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