CN101792135B - Process for calcining petroleum coke - Google Patents
Process for calcining petroleum coke Download PDFInfo
- Publication number
- CN101792135B CN101792135B CN2010101360237A CN201010136023A CN101792135B CN 101792135 B CN101792135 B CN 101792135B CN 2010101360237 A CN2010101360237 A CN 2010101360237A CN 201010136023 A CN201010136023 A CN 201010136023A CN 101792135 B CN101792135 B CN 101792135B
- Authority
- CN
- China
- Prior art keywords
- calcining
- zone
- temperature
- petroleum coke
- furnace
- 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.)
- Active
Links
Abstract
The invention discloses a process for calcining petroleum coke. The calcination of the petroleum coke is carried out in a tank type calcining furnace, and the tank body of the tank type calcining furnace is provided with a preheating zone and 6-8 calcining zones sequentially from top to bottom, wherein the calcining temperature of the first calcining zone at the uppermost part is controlled in the maximum calcining temperature interval allowed by the petroleum coke; the calcining temperature of the second calcining zone in the downstream position of the first calcining zone is kept in the maximum calcining temperature interval and is not higher than the calcining temperature of the first calcining zone; starting from the third calcining zone, the calcining temperature of each calcining zone gradually reduces relative to the calcining temperature of the adjacent calcining zone in the upstream position; and in the undermost calcining zone, the calcining temperature is reduced to the discharging temperature. In the invention, when the petroleum coke is calcined, the high temperature zone is positioned at the top end of the calcining furnace, thereby relieving the high temperature deformation phenomenon of the furnace body, being more favorable for overflow of combustible gas in the petroleum coke, reducing the corrosion of the combustible gas on wall bricks, and being favorable for prolonging the service life of the tank type furnace.
Description
Technical field
The present invention relates to the coking technology field, relate in particular to a kind of process for calcining of refinery coke.
Background technology
Refinery coke is the petroleum products of crude oil after fractionation by distillation goes out light BO, and the hard solid of outward appearance black in color or lead has metalluster, is granular, column or the acicular charcoal body thing that is formed by small graphite crystallization.The main application of refinery coke is to produce carbon product, like Graphite Electrodes, anode arc, the usefulness of steel-making, non-ferrous metal, aluminium metallurgy is provided, and produces silicon carbide articles, perhaps is used as fuel etc.The refinery coke of being produced from the refinery coke workshop is called green coke again, contains some not inflammable gass of the carbon hydrocarbon compound of carbonization, and green coke can be as the refinery coke of fuel-grade; If during as carbon product, just must carry out high-temperature calcination, the inflammable gas that refinery coke contains is removed to green coke; Make its carbonization; Improve the degree of graphitization of refinery coke, thereby improve the hot strength and the resistance toheat of Graphite Electrodes, and can improve the electric conductivity of Graphite Electrodes.
At present, pot furnace and rotary kiln calcining process are mainly adopted in domestic calcining to refinery coke.Wherein in the pot furnace explained hereafter, the calcining necessary energy is all provided by the gas fuel burning that refinery coke produces, and therefore has less energy-consumption, burning quality is good, the calcining furnace life-span long and the advantage of easy handling, is most widely used a kind of technology.Can-type calcine furnace is generally vertical downflow system calcining furnace, divides several calcining zone controlled temperature to calcine.Because the own characteristic of calcining furnace and take all factors into consideration output and burning quality; At present in the calcining petroleum coke technical field; It is the high-temperature zone that the pot furnace technology controlling and process is third and fourth calcining zone; Cooling gradually downwards, the second calcining zone temperature will be lower than third and fourth high-temperature zone, and the first calcining zone temperature will be lower than the second calcining zone temperature.In recent years; Because silicon mineral amount problem, the erosion resistance of pot furnace wall body brick descends to some extent, directly has influence on the work-ing life of pot furnace; And pot furnace is a disposable apparatus; Therefore invest greatlyyer again, how to prolong the work-ing life of pot furnace be that the calcining petroleum coke technical field reduces investment, the key point of increasing the benefit in research.Just be based on above factor, the inventor's influence factor of traditional pot furnace technology that begin one's study to converter life.The theoretical analysis obtains with the experiment practice: the traditional technology method is because third and fourth calcining zone is a high-temperature area, and this moment, stove body temperature was the highest, and easy deformation also will be born the refinery coke pressure from one, two layers on top, and fission phenomenon easily therefore deforms.The micro-composition (inflammable gas) that the while refinery coke contains evaporates at third and fourth calcining zone the most easily, and this moment is bigger owing to the degree of depth of refinery coke, and the charge level on its top is blocked up; Causing inflammable gas to overflow is obstructed; The result not only can not let inflammable gas overflow fully as soon as possible and participate in burning provides heat, and untimely because of the discharging of the organism in the inflammable gas, also can burn jointly with refinery coke; Produce the gas expansion phenomenon; And be bonded to piece, and perhaps be bonded on the furnace wall, cause stifled stove phenomenon; And gas moves down in the discharge process with raw material and fires because of ingress of air forms, and equipment and personnel safety are threatened, and directly influences the work-ing life of pot furnace.So further improve pot furnace temperature CONTROL PROCESS, the destruction to body of heater when reaching calcining is minimum, is prolongation pot furnace work-ing life, stablizes industry development, reduces the key point that fund input is increased the benefit.
Summary of the invention
Technical problem to be solved by this invention is: a kind of process for calcining of refinery coke is provided, prolonging the work-ing life of pot furnace, and helps temperature controlled stable and make full use of the inflammable gas energy.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of process for calcining of refinery coke; The calcining of said refinery coke is carried out in can-type calcine furnace; The tank body of said can-type calcine furnace order from top to bottom is set to preheating zone and 6～8 calcining zones, is provided with the inflammable gas passage that is interconnected around said preheating zone and the calcining zone; The petroleum coke particles that obtains after pulverizing and the removal of impurities is at first put into said preheating zone carry out preheating, order obtains after-smithing petroleum coke after calcining through a plurality of calcining zones then; In calcination process, the refinery coke inflammable gas that said petroleum coke particles produces gets into said inflammable gas passage through the preheating zone, respectively the calcining temperature of said each calcining zone is controlled through the combustion position of adjustment refinery coke inflammable gas; The process for calcining of said refinery coke is further comprising the steps of,
The calcining temperature of first calcining zone of topmost is controlled in the highest calcining temperature interval that said refinery coke allows; The calcining temperature that will be positioned at second calcining zone of the said first calcining zone downstream position remains on said the highest calcining temperature interval but is not higher than the calcining temperature of said first calcining zone; Begin from said the 3rd calcining zone; The calcining temperature of each calcining zone descends with respect to the calcining temperature of the calcining zone of adjacent upstream position gradually, and at the calcining zone in downstream calcining temperature is reduced to drop temperature.
Preferably, said can-type calcine furnace comprises preheating zone and 8 calcining zones of order setting from top to bottom.
Preferably, the cooling gradient of said each calcining zone is 30～50 ℃.
Wherein, the calcining temperature interval of said each calcining zone is:
1200～1300 ℃ of first calcining zones
Second calcining zone≤1200～1300 ℃
The 3rd calcining zone＜1150～1250 ℃
950～1050 ℃ of the 8th calcining zones.
Owing to adopted technique scheme; The invention has the beneficial effects as follows: the present invention overcomes the prejudice of those skilled in the art to the calcining temperature regional control; The calcining temperature control method of the can-type calcine furnace that breaks traditions; First and second calcining zone is adjusted into the high-temperature zone, begins to descend from the 3rd calcining zone calcining temperature, the 8th calcining zone temperature is minimum.This pot furnace temperature CONTROL PROCESS has the following advantages:
1, the present invention is adjusted into first and second calcining zone with pot furnace incinerating high-temperature zone; The high-temperature zone of the tank body of corresponding calcining furnace is also at first and second calcining zone; Though this moment, first and second calcining zone tank body brick temperature was the highest, deform the most easily, owing to alleviated suffered gravity and the extruding of high-temperature furnace body; Therefore alleviate the stressed of body of heater greatly, also just alleviated the high temperature deformation phenomenon of body of heater.
2, because the high-temperature zone of refinery coke when calcining is positioned at first and second calcining zone; The inflammable gas that evaporates relatively easily overflows because the charge level on its top is thinner, and therefore volatilization is more complete; Can be used to greatest extent; Solved in the prior art because of inflammable gas overflows insufficient energy dissipation problem that causes, and because of calcining initial stage inflammable gas just overflows, therefore helped the temperature control of each calcining zone and stable.
3, because inflammable gas overflows fully timely; The refinery coke of having avoided existing in the prior art that causes because of gas fuel burning expands, blocks up phenomenons such as stove at the body of heater middle part; A small amount of undischarged gas is owing to temperature in folding process reduces gradually; Also avoided inflammable gas to fire phenomenon because of what ingress of air took place, and reduced damage and the corrosion of inflammable gas, prolonged the work-ing life of pot furnace wall body brick at discharge gate.
4, because the inflammable gas that refinery coke contains is removed thoroughly, and carbonization is complete, and the calcining temperature control stabilization, the after-smithing petroleum coke purity of production is high, the quality stable homogeneous.
The present invention has overcome those skilled in the art to temperature controlled technological prejudice; Under the prerequisite that does not influence pot furnace calcining output; Calcining temperature is adjusted into the calcining CONTROL PROCESS method that helps pot furnace work-ing life most and help quality product, has effectively alleviated corrosion and high temperature deformation phenomenon that the temperature-controlled process in the traditional technology causes pot furnace.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is the vertical structure sectional view of pot furnace of the present invention.
Among the figure, the A. preheating zone; B1. first calcining zone; B2. second calcining zone; B3. the 3rd calcining zone; B4. the 4th calcining zone; B5. the 5th calcining zone; B6. the 6th calcining zone; B7. the 7th calcining zone; B8. the 8th calcining zone; 1. hopper; 2. volatilization space; 3. inflammable gas passage.
Embodiment
Shown in accompanying drawing, a kind of process for calcining of refinery coke, the calcining of said refinery coke is carried out in can-type calcine furnace, and the tank body of said can-type calcine furnace order from top to bottom is set to preheating zone A and 8 calcining zones: the first calcining zone B1; The second calcining zone B2; The 3rd calcining zone B3; The 4th calcining zone B4; The 5th calcining zone B5; The 6th calcining zone B6; The 7th calcining zone B7 and the 8th calcining zone B8; Above the preheating zone, be provided with hopper 1, leave volatilization space 2 between said hopper 1 and the pot furnace.Be provided with the inflammable gas passage 3 that is interconnected around said preheating zone A and the calcining zone; The petroleum coke particles that obtains after pulverizing and the removal of impurities is at first put into said preheating zone A carry out preheating, order obtains after-smithing petroleum coke through the first calcining zone B1 to the, eight calcining zone B8 after the calcining then; In calcination process, A gets into said inflammable gas passage 3 to the refinery coke inflammable gas that said petroleum coke particles produces through the preheating zone, respectively the calcining temperature of said each calcining zone is controlled through the combustion position of adjustment refinery coke inflammable gas; The calcining temperature of the first calcining zone B1 of topmost is controlled in the highest calcining temperature interval that said refinery coke allows; The calcining temperature that will be positioned at the second calcining zone B2 of the said first calcining zone B1 downstream position remains on said the highest calcining temperature interval but is not higher than the calcining temperature of the said first calcining zone B1; Begin from said the 3rd calcining zone B3; The calcining temperature of each calcining zone descends with respect to the calcining temperature of the calcining zone of adjacent upstream position gradually, and at the 8th calcining zone B8 in downstream calcining temperature is reduced to drop temperature.
Embodiment 1
(1) petroleum coke powder is broken into the petroleum coke particles below the particle diameter 50mm, and removes wherein metal and other foreign material.
(2) with petroleum coke particles after the preheating of the preheating zone of calcining furnace, get into calcining zone and calcine, by 8 calcining zones control calcining temperatures, said each calcining zone temperature is:
1280～1300 ℃ of first calcining zones
1250～1280 ℃ of second calcining zones
1200～1250 ℃ of the 3rd calcining zones
1180～1200 ℃ of the 4th calcining zones
1150～1200 ℃ of the 5th calcining zones
1100～1150 ℃ of the 6th calcining zones
1050～1100 ℃ of the 7th calcining zones
1000～1050 ℃ of the 8th calcining zones
Calcination time 48 hours.
After-smithing petroleum coke after the discharge port of calcining furnace the 8th calcining zone is discharged, goes to the product warehouse through the shaker conveyer conveying after calcining.
Embodiment 2
(1) petroleum coke powder is broken into the petroleum coke particles below the particle diameter 50mm, and removes wherein metal and other foreign material.
(2) with petroleum coke particles after the preheating of the preheating zone of calcining furnace, get into calcining zone and calcine, by 8 calcining zones control calcining temperatures, said each calcining zone temperature is:
1250～1280 ℃ of first calcining zones
1230～1250 ℃ of second calcining zones
1180～1230 ℃ of the 3rd calcining zones
1150～1180 ℃ of the 4th calcining zones
1100～1150 ℃ of the 5th calcining zones
1050～1100 ℃ of the 6th calcining zones
1000～1050 ℃ of the 7th calcining zones
980～1000 ℃ of the 8th calcining zones
Calcination time 48 hours.
After-smithing petroleum coke after the discharge port of calcining furnace the 8th calcining zone is discharged, goes to the product warehouse through the shaker conveyer conveying after calcining.
Embodiment 3
(1) petroleum coke powder is broken into the petroleum coke particles below the particle diameter 50mm, and removes wherein metal and other foreign material.
(2) with petroleum coke particles after the preheating of the preheating zone of calcining furnace, get into calcining zone and calcine, by 8 calcining zones control calcining temperatures, said each calcining zone temperature is:
1200～1250 ℃ of first calcining zones
1200～1250 ℃ of second calcining zones
1180～1200 ℃ of the 3rd calcining zones
1150～1200 ℃ of the 4th calcining zones
1100～1150 ℃ of the 5th calcining zones
1050～1100 ℃ of the 6th calcining zones
980～1050 ℃ of the 7th calcining zones
950～980 ℃ of the 8th calcining zones
Calcination time 52 hours.
After-smithing petroleum coke after the discharge port of calcining furnace the 8th calcining zone is discharged, goes to the product warehouse through the shaker conveyer conveying after calcining.
Claims (2)
1. the process for calcining of a refinery coke; The calcining of said refinery coke is carried out in can-type calcine furnace; The tank body of said can-type calcine furnace order from top to bottom is set to preheating zone and 6～8 calcining zones, is provided with the inflammable gas passage that is interconnected around said preheating zone and the calcining zone; The petroleum coke particles that obtains after pulverizing and the removal of impurities is at first put into said preheating zone carry out preheating, order obtains after-smithing petroleum coke after calcining through a plurality of calcining zones then; In calcination process, the refinery coke inflammable gas that said petroleum coke particles produces gets into said inflammable gas passage through the preheating zone, respectively the calcining temperature of said each calcining zone is controlled through the combustion position of adjustment refinery coke inflammable gas; It is characterized in that: the process for calcining of said refinery coke is further comprising the steps of,
The calcining temperature of first calcining zone of topmost is controlled in the highest calcining temperature interval that said refinery coke allows; The calcining temperature that will be positioned at second calcining zone of the said first calcining zone downstream position remains on said the highest calcining temperature interval but is not higher than the calcining temperature of said first calcining zone; Begin from said the 3rd calcining zone; The calcining temperature of each calcining zone descends with respect to the calcining temperature of the calcining zone of adjacent upstream position gradually; And calcining temperature is reduced to drop temperature at the calcining zone in downstream, the cooling gradient of said each calcining zone is 30～50 ℃.
2. the process for calcining of refinery coke as claimed in claim 1 is characterized in that: said can-type calcine furnace comprises preheating zone and 8 calcining zones that order from top to bottom is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101360237A CN101792135B (en) | 2010-03-31 | 2010-03-31 | Process for calcining petroleum coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101360237A CN101792135B (en) | 2010-03-31 | 2010-03-31 | Process for calcining petroleum coke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101792135A CN101792135A (en) | 2010-08-04 |
| CN101792135B true CN101792135B (en) | 2012-01-04 |
Family
ID=42585091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101360237A Active CN101792135B (en) | 2010-03-31 | 2010-03-31 | Process for calcining petroleum coke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101792135B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2977578B1 (en) * | 2011-07-06 | 2013-07-05 | Produits Refractaires | PROCESS FOR PRODUCING SILICON CARBIDE |
| CN102976306A (en) * | 2012-12-04 | 2013-03-20 | 贵州铝城铝业原材料研究发展有限公司 | Carbon high-temperature calcination method |
| CN104129998B (en) * | 2014-05-29 | 2016-08-24 | 山东宇佳新材料有限公司 | Calcining petroleum coke comprehensive utilization process |
| CN105460914B (en) * | 2014-09-10 | 2017-11-07 | 沈阳铝镁设计研究院有限公司 | A kind of pot type burner cryogenic calcining process |
| CN204111322U (en) * | 2014-09-10 | 2015-01-21 | 沈阳铝镁设计研究院有限公司 | Low temperature calcination petroleum coke can-type stove |
| CN109019551B (en) * | 2018-06-28 | 2023-07-14 | 百色皓海碳素有限公司 | Calcined coke product production process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3325363B2 (en) * | 1993-09-24 | 2002-09-17 | 日本エクスラン工業株式会社 | Orifice and submerged granulator using it |
| CN1227327C (en) * | 2003-05-18 | 2005-11-16 | 鞍山科技大学 | Compressed and calcined petroleum coke and its production process |
| CN101734647A (en) * | 2008-11-07 | 2010-06-16 | 贵阳铝镁设计研究院 | Raw petroleum coke mixed calcination technology and equipment system thereof |
| CN101544364A (en) * | 2009-05-03 | 2009-09-30 | 潍坊联兴炭素有限公司 | Carbon calciner |
-
2010
- 2010-03-31 CN CN2010101360237A patent/CN101792135B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101792135A (en) | 2010-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101792135B (en) | Process for calcining petroleum coke | |
| CN1758005A (en) | Electric calcining furnace of using volatile and electric calcining method | |
| CN102925169B (en) | Coke discharging process of semi-coke | |
| CN105967180B (en) | graphitizing furnace | |
| CN1792952A (en) | Composite silicon brick | |
| CN201314783Y (en) | Tank-type calcining furnace | |
| CN102180604B (en) | Spinning bed equipment and process for producing high-activity lime with spinning bed | |
| CN201555446U (en) | Smelting rotary hearth furnace for directly reducing nickel | |
| CN105509485A (en) | Blow-in method of calcium carbide furnace | |
| CN104593015A (en) | Formcoke refining method and device thereof | |
| CN1924106A (en) | Prebaked-anode baking heating-up technology | |
| CN102070347A (en) | Preparation method for high-alumina bricks | |
| CN2759998Y (en) | Vertical electric incinerator for continuous production of high-purity graphite carbon material | |
| CN108101048A (en) | High temperature graphitization equipment | |
| CN202945167U (en) | Working lining structure of gas-burned lime shaft kiln | |
| CN1928134A (en) | Multiple heat resources-electric warming magnesium smelting apparatus and process | |
| RU2396498C1 (en) | Device for high-temperature treatment of carbon materials (electro-calcinator) | |
| CN203432275U (en) | Magnesia powder light burning shaft kiln | |
| CN200964433Y (en) | Internal heat type-multiple heat source-electric heating method magnesium metal reducing furnace | |
| CN216972587U (en) | Golden tower type furnace bottom gas supply brick masonry structure capable of effectively improving furnace life of converter | |
| CN102923704B (en) | Continuous preparation method of tungsten carbide powder | |
| CN202501743U (en) | Tank type calciner | |
| CN201031204Y (en) | Novel slate flour kiln | |
| CN202403531U (en) | Electric carbon forge furnace | |
| CN202808373U (en) | Calcining furnace for producing crushed synthetic graphite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |