CN102643664B - Production process of coking for silting solid bed - Google Patents
Production process of coking for silting solid bed Download PDFInfo
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- CN102643664B CN102643664B CN201210127261.0A CN201210127261A CN102643664B CN 102643664 B CN102643664 B CN 102643664B CN 201210127261 A CN201210127261 A CN 201210127261A CN 102643664 B CN102643664 B CN 102643664B
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Abstract
The invention relates to a coking apparatus for petrochemical enterprises, in particular to a production process of coking for a silting solid bed. The production process is characterized by comprising the following steps: heating a heavy-oil component to 480-550 DEG C through a heating furnace, enabling the heavy-oil component to enter a first reactor, then going through a gas-liquid-solid separator, thereby realizing a fast separation of the oil gas and liquid-solid coking precursors in the gas-solid-liquid separator; cooling high-temperature oil gas by a terminator to terminate reaction, fractionating the separated oil gas by a fractionator to obtain light oil; polymerizing, decomposing and curing the liquid-solid coking precursors to be cokes under high temperature provided by high temperature circulating oil in a second reactor, thereby obtaining petroleum cokes, and finally enabling the reacted oil gas to enter the first reactor. According to the production process provided by the invention, the first reactor, the second reactor and the gas-solid-liquid separator are combined together so that high efficiency, low pressure drop and coking prevention are achieved.
Description
Technical field
The present invention relates to a kind of coker of Petrochemical Enterprises, be specifically related to a kind of solid bed coking production technique of becoming silted up.The solid bed coker of silt that the present invention is applicable to the solid bed coker of newly-built silt and utilizes delayed coking unit to transform.
Background technology
The demand of the current whole world to processed oil is increasing, and crude oil reserve is constantly reduced by exploitation, how can utilize the limited more processed oil of crude oil output, by more and more outstanding for the demand of crude oil finished product to greatest extent.Particularly the amount of residual oil, refinery's sump oil, cracking tail oil, catalytic slurry, low-volatility fuel wet goods delayed coking raw material accounts for crude oil ratio greatly, and improving each refinery of coker light oil yield has more urgent demand.Therefore develop a kind of liquid and receive the solid bed coking production technique of high silt.
Summary of the invention
The invention provides a kind of solid bed coking production technique of becoming silted up,
Another object of the present invention there is provided a kind of solid bed coking production device that becomes silted up.
The concrete technical scheme that the present invention adopts is:
A kind of solid bed coking production technique of becoming silted up, is characterized in that, comprise the steps:
Heavy oil component is heated by process furnace and after 480-550 DEG C, to be entered the first reactor, through gas-liquid-solid separator, the sharp separation of oil gas and liquid-solid body coking precursors is realized in gas-liquid-solid separator, high-temperature oil gas to be lowered the temperature termination reaction through terminator, and the oil gas after separation enters separation column to carry out fractionation and obtain light-end products; Liquid-solid body coking precursors enter the second reactor by high temperature circulation oil provide heat carry out high temperature polymerization decompose solidification coking obtain refinery coke product, reaction oil gas enters the first reactor.
Described heavy oil component is residual oil, sump oil, cracking tail oil, catalytic slurry, the one of heavy fuel oil (HFO) or any mixture.
Described terminator follows oil or light wax oil in being.
Described second reactor is the solid bed bioreactor that becomes silted up.
Wherein, the reaction pressure of gas-liquid-solid separator can adjust arbitrarily between 0.05 to 1.0Mpa according to the change of inlet amount.
Anti-coking reaction oil gas enters separation column to carry out fractionation separates and goes out wax tailings, coker gas oil, coker gasoline, rich tail gas of coking plant.
Coker gasoline and rich tail gas of coking plant enter absorbing-stabilizing system and are separated into coker gasoline, coking liquefied gas, coking dry gas.
A kind of solid bed coking production device that becomes silted up, it is characterized in that, comprise the second reactor, second reactor is arranged the first reactor, gas-liquid-solid separator is provided with in first reactor, first reactor arranges collection chamber, and described collection chamber top is also provided with In Oil-gas Line and quenching oil pipeline, and In Oil-gas Line is connected with separation column; Also comprise process furnace, the feed line of process furnace is connected with the first reactor, and the turning oil pipeline of process furnace is connected with the second reactor.
Described first reactor and the second reactor coaxially arranged and be integrated in one.
Compared with prior art, advantage of the present invention is:
1) the first reactor, the second reactor (the solid bed bioreactor of liquid-solid phase silt) gentle solid-liquid separator are combined by the present invention, efficient, low pressure drop, anti-coking;
2) the first reactor controls the pyroreaction time, prevents reaction product oil gas from producing secondary reaction, and the injection of terminator simultaneously terminates the secondary reaction of reaction product, decreases dry gas, coke yield, improves device liquid yield more than 2%;
3) application of gas-solid-liquid separator decreases coke powder and carries, and decreases fractionating system coking, extends the driving time of fractionating system;
4) application of the second reactor makes coking precursors progressively be polymerized green coke in the second reactor, and coking precursors is the polymerizable crystallizable that liquid solid admixture is more conducive between coking precursors becoming silted up in solid bed bioreactor, and coking quality is high.
5) the second reactor avoids coking precursors and a large amount of pyroreaction hydrocarbons contact produces foam, significantly reduces focus layer upper foam layer height, is conducive to device long period and goes into operation.
6) the coaxially arranged and design be integrated in one of first and second reactor reaches Economization on land, reduces investment outlay, and makes first and second reactor share a set of hydraulic decoking system, and technique Jiao of the first reactor can obtain decoking timely.
Accompanying drawing explanation
Fig. 1 is that the present invention is become silted up the structural representation of solid bed coking production device;
In figure, 1-feed line, 2-process furnace, 3-gas-liquid-solid separator, 4-first reactor, 5-second reactor, 6-turning oil pipeline, 7-gas pipeline, 8-quenching oil pipeline, 9-quenching oil pipeline, 10-collection chamber.
Embodiment
As shown in Figure 1, raw material enters process furnace 2 by feed line 1, heat laggard first reactor 4, first reactor 4 reaction product is separated through gas-liquid-solid separator 3 after terminator (terminator enters the first reactor 4 via terminator pipeline 9) termination reaction, oil gas enters top collection chamber 10, enters gas pipeline 7 and enter separation column after quenching oil (quenching oil enters collection chamber 11 via quenching oil pipeline 9) chilling; The isolated liquid-solid body of gas-liquid-solid separator 3 enters the second reactor 5 provides thermal source to continue reaction green coke by turning oil (turning oil enters via turning oil pipeline 6), reaction oil gas rises to top collection chamber 10 and enters fractionating system through gas pipeline 7 and absorbing-stabilizing system isolates liquid product together with the first reactor 4 reaction oil gas, and the isolated liquid-solid body of gas-solid-liquid separator 3 enters the second reactor 5 and provides heat to continue cracking polyreaction by turning oil to generate refinery coke product.
Claims (4)
1. a solid bed coking production technique of becoming silted up, it is characterized in that, comprise the steps: that heavy oil component is heated by process furnace and after 480-550 DEG C, to enter the first reactor, through gas-liquid-solid separator, the sharp separation of oil gas and liquid-solid body coking precursors is realized in gas-solid-liquid separator, high-temperature oil gas to be lowered the temperature termination reaction through terminator, and the oil gas after separation enters separation column to carry out fractionation and obtain light-end products; Liquid-solid body coking precursors enter the second reactor by high temperature circulation oil provide heat carry out high temperature polymerization decompose solidification coking obtain refinery coke product, reaction oil gas enters the first reactor;
Wherein, the second reactor is arranged the first reactor, be provided with gas-liquid-solid separator in the first reactor, the first reactor top is provided with collection chamber, and described collection chamber top is also provided with In Oil-gas Line and quenching oil pipeline, and In Oil-gas Line is connected with separation column; Also comprise process furnace, the feed line of process furnace is connected with the first reactor, and the turning oil pipeline of process furnace is connected with the second reactor;
Described first reactor and the second reactor coaxially arranged and be integrated in one.
2. the solid bed coking production technique of silt according to claim 1, is characterized in that, described heavy oil component is residual oil, sump oil, cracking tail oil, the one of catalytic slurry or any mixture.
3. the solid bed coking production technique of silt according to claim 1, it is characterized in that, described terminator is light wax oil.
4. the solid bed coking production technique of silt according to claim 1, it is characterized in that, the reaction pressure of described gas-solid-liquid separator is 0.05-1.0Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127261.0A CN102643664B (en) | 2012-04-27 | 2012-04-27 | Production process of coking for silting solid bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210127261.0A CN102643664B (en) | 2012-04-27 | 2012-04-27 | Production process of coking for silting solid bed |
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| Publication Number | Publication Date |
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| CN102643664A CN102643664A (en) | 2012-08-22 |
| CN102643664B true CN102643664B (en) | 2015-02-18 |
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| CN201210127261.0A Active CN102643664B (en) | 2012-04-27 | 2012-04-27 | Production process of coking for silting solid bed |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5891325A (en) * | 1998-08-11 | 1999-04-06 | Exxon Research And Engineering Co. | Process for reducing total acid number of crude oil |
| CN1580193A (en) * | 2003-07-31 | 2005-02-16 | 中国石油化工股份有限公司 | High acid value hydrocarbon oil delayed coking method |
| CN102051214A (en) * | 2009-11-02 | 2011-05-11 | 吴雷 | Coked wax oil thermal cracking combined process |
-
2012
- 2012-04-27 CN CN201210127261.0A patent/CN102643664B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5891325A (en) * | 1998-08-11 | 1999-04-06 | Exxon Research And Engineering Co. | Process for reducing total acid number of crude oil |
| CN1580193A (en) * | 2003-07-31 | 2005-02-16 | 中国石油化工股份有限公司 | High acid value hydrocarbon oil delayed coking method |
| CN102051214A (en) * | 2009-11-02 | 2011-05-11 | 吴雷 | Coked wax oil thermal cracking combined process |
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| CN102643664A (en) | 2012-08-22 |
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