Method of desalinating coal tar

专利摘要:
The invention relates to the processing of tar, in particular to the desalting of coal tar. The goal is to reduce the ash and chlorine content in the target product. Desalting is carried out by pre-mixing with water or with water and toluene, and then with a gas containing CO 2 , followed by heating in an autoclave to 80-150 ° C (under supercritical conditions for CO 2 ) in a CO 2 medium or CO 2 mixture with propane at a pressure of 100-260 bar. Then, the pressure is released (separately from each phase) with separation of the product obtained into the aqueous and hydrocarbon phases by settling and separation of the target product. The method provides complete removal of chlorine and chlorides in the target product by single-stage washing. The zinc and other ash content is reduced by 48.9 - 87.5%. 3 tab.
公开号:SU1512486A3
申请号:SU874203340
申请日:1987-09-23
公开日:1989-09-30
发明作者:Бенеке Херберт；Алшер Арнольд；Оберкобуш Рудольф；ПЕТЕР Зигфрид；Яуманн Вольфганг
申请人:Рютгерсверке Аг (Фирма)；
IPC主号:

专利说明:

The invention relates to methods for the desalting of coal tar and can be used in the coke industry.
The purpose of the invention is to reduce the ash and chlorine content in the target product .;
Example 1. 400 g of coal tar with a softening temperature and an ash content of 2600 ppm, together with 500 g of water, are introduced into a stirred autoclave. ABTo fcrfafi closed and heated to 150 C.
During the pressing of the CO; in the gas form, start mixing of both phases. A pressure of 00 is held at 100 bar until the end of the experiment after
3 hours (critical parameters: temperature 31.3 ° С, pressure 71.5 bar).
The phases are then separated and drained. Water contains less than 1 wt.% Organic components.
Samples of the original and washed tar are burned to ash, and the content of ZnO and Nad is determined. The results are presented in table. one.
Example 2. 400 g of coal tar with a zinc content of 653 ppm and chlorine of 1652 ppm, together with 400 g of water, are introduced into an autoclave, which is then heated to 80 ° C and in which 00.2 is fed. increase the pressure to 100 bar.
 cm
3 - 1512 The mixture is vigorously stirred for 4 hours, then both phases are separated by settling.
Water contains less than 1 wt.% Organic components.
The ash, zinc and chlorine content of the tar is then determined. The results are shown in Table. 2
Example 3. 400 g of coal tar with a softening temperature of 70 ° C and an ash content of 2600 ppm, together with 400 g of water and 400 g of toluene, were introduced into an autoclave with a stir bar.
The autoclave is closed and heated to 150 ° C.
Then propane is fed to achieve a pressure of 160 bar, and then CO is added to achieve a total pressure of 260 bar. The critical propane temperature is 97 ° C and the critical pressure is 42.2 bar. After 3 hours of stirring, the organic and aqueous phases are separated by decanting. In this case, the organic phase precipitates to the bottom, and the aqueous phase remains above the first. Both phases are drained separately and reduce their pressure. Toluene is separated from the organic phase by stepwise pressure reduction, and the tar is analyzed in the same manner as described in Example 1. The results are shown in Table. 3
Water contains 783 mg / l NaCl, 0.15 mg / l Zn and less than 1 wt.% Organic components.
Thus, according to the proposed method, chlorine and chlorides are almost completely removed by single-stage washing. The zinc and other ash content is reduced by 48.9-87.5%.

权利要求:
Claims (1)
[1]
Invention Formula
A method for desalting coal tar, including mixing it with a gas containing carbon dioxide, heating in an autoclave under supercritical conditions for carbon dioxide at elevated temperatures and pressures of 100-260 bar, followed by depressurization and dissociation of the target product, characterized in that reducing the ash and chlorine content in the target product, coal tar is pre-mixed with water or water. and toluene, heated in an autoclave to 80-150 ° C in carbon dioxide or a mixture of carbon dioxide with propane m, - under the specified pressure, then the resulting product is separated into aqueous and hydrocarbon phases by settling and pressure is released separately from each phase.
Table 1
Original tar
3100
table 2
813
1652

900 71

2600 1600 38.5
Editor A. Ogar
Compiled by N. Korolev
Tehred L. Serdyukova Proofreader M. Sharoshi
Order 5915/59
Circulation 446
VNIIPI of the State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab.
42
97.5 Table 3
455
39
91.4
1050
1001
7
Subscription

类似技术:

---

公开号 | 公开日 | 专利标题

---

AU2007307596B2|2012-05-24|Method for production of ashless coal

---

KR100202089B1|1999-06-15|Process of producing gasoline, diesel and carbon black with waste rubbers and/or waste plastics

---

SU1512486A3|1989-09-30|Method of desalinating coal tar

---

US4842715A|1989-06-27|Novel technique for rendering oily sludges environmentally acceptable

---

JP4801867B2|2011-10-26|Degradation of contaminants in petroleum streams by phase transfer catalysts.

---

EP0029695B1|1983-07-20|Removal of phenols from phenol-containing streams

---

US2393214A|1946-01-15|Processing acid sludge

---

JPS55127489A|1980-10-02|Production of caking agent for blast furnace coke from coal

---

KR890011828A|1989-08-22|Separation method of toluene diisocyanate present in the residue obtained from toluene diisocyanate preparation

---

Ehsani2006|Desulfurization of tabas coals using chemical reagents

---

US4188191A|1980-02-12|Process for reducing the sulfur content of coal and coal char and the ignition temperature of coal char

---

CA2389354A1|2001-06-07|A process for recovering hydrocarbons from a carbon containing material

---

CA2077067C|1997-03-04|Process for regenerating spent bleaching earth

---

US6093311A|2000-07-25|CO2 treatment to remove +2 ionic metal from crude

---

US4277326A|1981-07-07|Oxygen alkylation of phenol-containing hydrocarbonaceous streams

---

US4859212A|1989-08-22|Chemical cleaning of coal by molten caustic leaching after pretreatment by low-temperature devolatilization

---

FR2670771A1|1992-06-26|METHOD FOR FIXING THE WHITE PHOSPHORUS

---

US3799872A|1974-03-26|Oil-water separation

---

US4183730A|1980-01-15|Hydrodesulfurization of coal with hydrogen peroxide in brine solution

---

US335962A|1886-02-09|Eugeist schaal

---

SU563412A1|1977-06-30|Method of producing chloro-derivatives of hydrocarbons

---

SU1337398A1|1987-09-15|Method of extracting mineral oils from used emulsions

---

RU1778140C|1992-11-30|Process for producing binder

---

RU1770272C|1992-10-23|Method of diamond purification

---

SU967947A1|1982-10-23|Process for recovering phosphorus from slurry

同族专利:

---

公开号 | 公开日

---

EP0265598B1|1990-09-19|

---

PL268457A1|1988-11-24|

---

DE3765079D1|1990-10-25|

---

AU8017487A|1988-05-05|

---

AU593399B2|1990-02-08|

---

CA1285897C|1991-07-09|

---

ES2002257B3|1991-04-01|

---

ZA876675B|1988-03-16|

---

EP0265598A1|1988-05-04|

---

US4871443A|1989-10-03|

---

DK561287D0|1987-10-27|

---

ES2002257A4|1988-08-01|

---

JPS63122786A|1988-05-26|

---

DE3636560A1|1988-05-05|

---

US4831101A|1989-05-16|

---

PL151418B1|1990-08-31|

---

DK561287A|1988-04-29|

---

CS264297B2|1989-06-13|

---

CS642487A2|1988-09-16|

---

IN170362B|1992-03-21|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US32120A|1861-04-23|Floor-clamp |

---

US2572583A|1948-12-21|1951-10-23|Phillips Petroleum Co|Improved liquid-liquid contacting process using di-amine|

---

FR1038775A|1950-06-20|1953-10-01|Collin F J Ag|Improvements in tar and tar products purification processes and devices|

---

GB849987A|1957-12-02|1960-09-28|Allied Chem|Process for treating coke oven tar|

---

US3202605A|1962-06-06|1965-08-24|Badger Co|Propane deaspihalting process|

---

GB1482690A|1974-12-19|1977-08-10|Coal Ind|Hydrogenation of coal|

---

US4101416A|1976-06-25|1978-07-18|Occidental Petroleum Corporation|Process for hydrogenation of hydrocarbon tars|

---

JPS6041111B2|1976-11-26|1985-09-13|Shinnitsutetsu Kagaku Kk|

---

US4208267A|1977-07-08|1980-06-17|Exxon Research & Engineering Co.|Forming optically anisotropic pitches|

---

DE2810332C2|1978-03-10|1982-08-05|Rütgerswerke AG, 6000 Frankfurt|Process for the separation of quinoline-insoluble constituents from coal tar pitch|

---

US4219404A|1979-06-14|1980-08-26|Exxon Research & Engineering Co.|Vacuum or steam stripping aromatic oils from petroleum pitch|

---

DE3017876C2|1980-05-09|1988-09-22|Peter, Siegfried, Prof. Dr., 8520 Erlangen, De|

---

US4402824A|1981-03-25|1983-09-06|Sumitomo Metal Industries, Limited|Process for refining coal-based heavy oils|

---

USRE32120E|1981-04-01|1986-04-22|Phillips Petroleum Company|Hydrotreating supercritical solvent extracts in the presence of alkane extractants|

---

US4604184A|1983-11-16|1986-08-05|Domtar Inc.|Modified coal-tar pitch|

---

DE3135368A1|1981-09-07|1983-03-31|Siemens AG, 1000 Berlin und 8000 München|METHOD AND ARRANGEMENT FOR FUNCTIONAL TESTING OF A PROGRAMMABLE LOGIC ARRANGEMENT|

---

US4482453A|1982-08-17|1984-11-13|Phillips Petroleum Company|Supercritical extraction process|

---

JPH0150354B2|1982-08-30|1989-10-30|Osaka Gas Co Ltd|

---

US4503026A|1983-03-14|1985-03-05|E. I. Du Pont De Nemours And Company|Spinnable precursors from petroleum pitch, fibers spun therefrom and method of preparation thereof|

---

US4502943A|1983-03-28|1985-03-05|E. I. Du Pont De Nemours And Company|Post-treatment of spinnable precursors from petroleum pitch|

---

US4447598A|1983-04-07|1984-05-08|The Dow Chemical Company|Method of preparing epoxy resins having low hydrolyzable chloride contents|

---

DE3335316A1|1983-09-29|1985-04-11|Rütgerswerke AG, 6000 Frankfurt|METHOD FOR SEPARATING RESINY MATERIALS FROM CARBONATE HEAVY OILS AND USE OF THE FRACTION RECOVERED|

---

US4485221A|1983-11-03|1984-11-27|Ciba-Geigy Corporation|Process for making epoxy novolac resins with low hydrolyzable chlorine and low ionic chloride content|

---

JPH0361604B2|1984-03-26|1991-09-20|Kawasaki Steel Co|

---

US4578177A|1984-08-28|1986-03-25|Kawasaki Steel Corporation|Method for producing a precursor pitch for carbon fiber|

---

US4575412A|1984-08-28|1986-03-11|Kawasaki Steel Corporation|Method for producing a precursor pitch for carbon fiber|

---

DE3539432C2|1984-11-09|1989-06-01|Instytut Chemii Przemyslowej, Warschau/Warszawa, Pl|US5194637A|1991-08-22|1993-03-16|Syracuse University|Method and apparatus for synthesis of highly isomerically pure stereoisomers of glycidol derivatives|

---

US5274160A|1991-08-22|1993-12-28|Syracuse University|Method and apparatus for synthesis of highly isomerically pure stereoisomers of glycidol derivatives|

---

US5576362A|1992-04-20|1996-11-19|Denki Kagaku Kogyo Kabushiki Kaisha|Insulating material and a circuit substrate in use thereof|

---

US5578740A|1994-12-23|1996-11-26|The Dow Chemical Company|Process for preparation of epoxy compounds essentially free of organic halides|

---

MY122050A|1998-05-29|2006-03-31|Sumitomo Chemical Co|Highly purified epoxy resin|

---

JP5245274B2|2007-04-02|2013-07-24|三菱化学株式会社|Method for removing water from tar or tar emulsion, method for tarting tar emulsion, and method for reducing moisture content in tar|

---

CN104910944B|2015-06-10|2018-03-20|山东宝塔新能源有限公司|Coal tar desalinating process|

---

CN106701157B|2015-11-12|2018-04-10|中国石油化工股份有限公司|A kind of high temperature coal-tar process for demetalizating|

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

DE19863636560|DE3636560A1|1986-10-28|1986-10-28|METHOD FOR THE DESALINATION OF CARBON TARES AND PITCHES|

---