CN102585880A - High-temperature medium-pressure coking drum - Google Patents
High-temperature medium-pressure coking drum Download PDFInfo
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- CN102585880A CN102585880A CN201110462709XA CN201110462709A CN102585880A CN 102585880 A CN102585880 A CN 102585880A CN 201110462709X A CN201110462709X A CN 201110462709XA CN 201110462709 A CN201110462709 A CN 201110462709A CN 102585880 A CN102585880 A CN 102585880A
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Abstract
The invention discloses a high-temperature medium-pressure coking drum, relates to a device for separating coke and oil gas, and solves the technical problems of unreasonable structure, low work temperature and low pressure of the conventional coking drum. The high-temperature medium-pressure coking drum comprises an upper end head, a main body reaction cavity, a lower conical body and temperature and control inspection operation adapter tubes, and is characterized in that: the upper end head is a spherical end head; equipment flanges are arranged between the upper spherical end head and the main body reaction cavity; the semi-apex angle of the lower conical body is 30 degrees; the transition fillet radius of the lower conical body is equal to the radius of the main body reaction cavity; and the spherical end head, the main body reaction cavity and the lower conical body are all made of austenitic stainless steel. The high-temperature medium-pressure coking drum is used for separating the coke and the oil gas, and has the advantages of good equipment manufacturing performance, using performance and long-period operation performance, low equipment corrosion, and simple equipment configuration process; and main products have high yield.
Description
Technical field
The present invention relates to the tripping device that a kind of normality mixture at high temperature is decomposed into the gas-solid phase, refer to that especially a kind of residual oil medium closes under the state in high temperature, middle densification, is decomposed into the tripping device of solid coke and oil gas.
Background technology
In the prior art, along with the change of crude oil heavy with poor qualityization, and market is to the variation of clean cargo demand structure, the residual oil deep processing has developed into most important secondary processing process.The residual oil deep processing is to improve yield of light oil through changing hydrogen-carbon ratio (H/C), and its Basic Ways is taked the way of decarburization or hydrogenation.Along with economic diversification and environmental requirement improve constantly, taking the decarburization mode that residual oil is carried out deep processing becomes main developing direction day by day.Adopt the decarburization mode that residual oil is carried out in many technology of deep processing, the delay coking process range of application is the most extensive, and the coke drum of traditional delay coking process adopts carbon steel material more; The thickness of its tower body is very thick, and design temperature can not be higher than 375 ℃, and the material of the coke drum of design all adopted the Cr-Mo steel in recent years; Stainless steel clad plate is often adopted on coke drum top, and the thickness of composite bed is generally 3mm, and the material of composite bed is 0Cr13Al or 0Cr13; Become fragile easily at life-time service tower body more than 425 ℃; And the design temperature of coke drum is 500 ℃, and working temperature reaches as high as 487 ℃, and pressure is 0.35MPa; Coke drum top end socket is an elipse head, and 45 ° of bottom cone semiapex angles and excessive fillet radius are little.Shortcoming: all there is unfavorable factor in traditional coke drum at aspects such as device structure, manufacturing property, use properties, LP processing property; H
2S stress corrosion and hydrogen-type corrosion are more serious; Output main products yield is lower, and second-rate, and depth of conversion is low.And delay coking process system, complex technical process are joined by institute; Resistance is big, and power consumption is big; Secondary pollution is serious; Because process temperature is relatively low, coking in the process furnace endless tube easily; Need to be equipped with complicated purification process; Thereby comprehensive cost is high.
Summary of the invention
The object of the invention is intended to overcome the shortcoming of prior art, provides in a kind of high temperature and presses coke drum, solves traditional coke drum because unreasonable structure, and working temperature is low, pressure is little, causes device fabrication performance, use properties, LP processing property poor; Equipment corrosion is more serious; The main products yield is lower; The technical problem of equipment configuration complex process.
The present invention realizes through following technical scheme:
Press coke drum in a kind of high temperature, comprising: top end socket, the main body reaction chamber that is connected with the top end socket; The bottom cone that is connected with the main body reaction chamber; And be arranged on the observing and controlling checked operation adapter on the coke drum, it is characterized in that: said top end socket is a kind of dome head, between said top dome head and the said main body reaction chamber vessel flange is set; The semiapex angle of said bottom cone is 30 °, and cone excessive fillet radius in bottom equals main body reaction chamber radius.
On said dome head, main body reaction chamber, bottom cone, being provided with a plurality of said observing and controlling checked operations takes over.
On said main body reaction chamber, be provided with bearing, hanger, hand hole.
Said dome head, vessel flange, main body reaction chamber, bottom cone adopt austenitic stainless steel to make.
The present invention compared with prior art has the following advantages and beneficial effect:
1, main material of the present invention is selected austenitic stainless steel for use, and device interior need not to add composite bed again; Main material the austenitic stainless steel used carbon steel of the more traditional coke drum of mechanical property or Cr-Mo steel under the condition of high temperature increase, and the design thickness of tower body is thinner relatively, make more easily; The main material austenitic stainless steel has creep rupture strength preferably, and possesses anti-H 2 S stress corrosion and the anti-hydrogen-type corrosion performance of high temperature, solved coke drum at high temperature, face hydrogen, H
2H 2 S stress corrosion and hydrogen-type corrosion problem in the S atmosphere; The main material austenitic stainless steel has the good resistance high temperature creep property, makes coke drum LP processing property get a promotion; Coke drum design temperature of the present invention is brought up to 630 ℃, and pressure is brought up to 2.2MPa, has well solved yield, quality; Depth of conversion also has many defective workmanships, makes the yield of main products increase; And quality improves; It is low well to have solved depth of conversion, complex technical process, many technology difficult problems such as coking in the process furnace endless tube easily.The advantage of the traditional relatively coke drum of the present invention is: device structure, manufacturing property, use properties, LP processing property, etc. the aspect all improve; Solved H
2S stress corrosion and hydrogen-type corrosion problem; Output main products yield improves, and quality gets a promotion, and depth of conversion strengthens.And the institute join the delay coking process system, technological process is simple; Resistance is little, and power consumption is less relatively; Secondary pollution is lighter; Because process temperature is higher relatively, is not easy coking in the process furnace endless tube; Purification process is simple; Comprehensive cost is lower.
2, coke drum top end socket employing dome head of the present invention; Strained condition is better, has increased vessel flange, more helps built-in function and maintenance; The semiapex angle of bottom cone is designed to 30 °; And excessively fillet radius equals the equipment radius, also easy discharging except strained condition is good, and structure optimization design makes use properties improve.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the typical structure synoptic diagram of traditional coke drum.
The present invention is described in detail through preferred embodiment below in conjunction with accompanying drawing.
Embodiment
As shown in Figure 1, press coke drum in a kind of high temperature, comprising: top end socket 1; The main body reaction chamber 3 that is connected with the top end socket, the bottom cone 4 that is connected with the main body reaction chamber, and the observing and controlling checked operation that is arranged on the coke drum takes over 5; Said top end socket 1 is a kind of dome head; Between said top dome head 1 and the said main body reaction chamber 3 vessel flange 2 is set, the semiapex angle of said bottom cone 4 is 30 °, and cone excessive fillet radius in bottom equals main body reaction chamber radius.
On said dome head 1, main body reaction chamber 3, bottom cone 4, be provided with a plurality of said observing and controlling checked operations and take over 5.
On said main body reaction chamber 3, be provided with bearing 3-1, hanger 3-2, hand hole 3-3.
Said dome head 1, vessel flange 2, main body reaction chamber 3, bottom cone 4 adopt austenitic stainless steels to make.
Said coke drum material adopts austenitic stainless steel, and its effect is to improve design temperature and pressure, and the yield of main products and quality thereof are got a promotion; Be provided with vessel flange in main body reaction chamber upper end, be used for built-in function and maintenance, play the sealed inside medium simultaneously; Vessel flange top is dome head, directly docks with vessel flange, and its effect is a part that constitutes the coke drum closed cavities, avoids interior media to leak; In main body reaction chamber lower end a bottom cone is set, bottom cone semiapex angle is 30 °, and cone excessive fillet radius in bottom equals main body reaction chamber radius, and its effect also is a part that constitutes the coke drum closed cavities, plays the effect of supporting interior media simultaneously; Corresponding site on dome head, main body reaction chamber, bottom cone is provided with a plurality of observing and controlling checked operations and takes over, and its effect will be respectively applied for observing and controlling, inspection and the operation of coke drum, guarantee that whole coke drum normally moves.
Principle of work of the present invention:
Residual oil is got into the main body reaction chamber 3 of coke drum by the import of bottom cone 4 lower ends; Cracking and condensation reaction take place under the condition of suitable pressure, temperature and the residence time in coke drum; Scission reaction produces gas, lightweight and middle matter oil product and arrives the coke drum air outlet through vessel flange 2 and top dome head 1, gets into follow-up system.Condensation reaction generates coke and rests on the position of interior main body reaction chamber 3 bottoms of tower and bottom cone 4, is removed by subsequent technique.
Claims (4)
1. press coke drum in a high temperature; Comprise: top end socket (1); The main body reaction chamber (3) that is connected with the top end socket, the bottom cone (4) that is connected with the main body reaction chamber, and the observing and controlling checked operation that is arranged on the coke drum is taken over (5); It is characterized in that: said top end socket (1) is a kind of dome head; Between said top dome head (1) and the said main body reaction chamber (3) vessel flange (2) is set, the semiapex angle of said bottom cone (4) is 30 °, and cone excessive fillet radius in bottom equals main body reaction chamber radius.
2. coke drum according to claim 1 is characterized in that: on said dome head (1), main body reaction chamber (3), bottom cone (4), be provided with a plurality of said observing and controlling checked operations and take over (5).
3. coke drum according to claim 1 is characterized in that: on said main body reaction chamber (3), be provided with bearing (3-1), hanger (3-2), hand hole (3-3).
4. coke drum according to claim 1 is characterized in that: said dome head (1), vessel flange (2), main body reaction chamber (3), bottom cone (4) adopt austenitic stainless steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110462709XA CN102585880A (en) | 2011-12-31 | 2011-12-31 | High-temperature medium-pressure coking drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110462709XA CN102585880A (en) | 2011-12-31 | 2011-12-31 | High-temperature medium-pressure coking drum |
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| CN102585880A true CN102585880A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110462709XA Pending CN102585880A (en) | 2011-12-31 | 2011-12-31 | High-temperature medium-pressure coking drum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733650A (en) * | 2014-12-06 | 2016-07-06 | 中国石油化工股份有限公司 | Novel coke tower and needle coke production method |
| CN109233886A (en) * | 2018-10-26 | 2019-01-18 | 重庆润科新材料技术有限公司 | Coalite tar prepares the production method of coal-based needle coke in a kind of utilization |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343553A (en) * | 2007-07-13 | 2009-01-14 | 中国石油化工集团公司 | Apparatus and method for preventing coking drum oil gas vent from coking |
-
2011
- 2011-12-31 CN CN201110462709XA patent/CN102585880A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343553A (en) * | 2007-07-13 | 2009-01-14 | 中国石油化工集团公司 | Apparatus and method for preventing coking drum oil gas vent from coking |
Non-Patent Citations (3)
| Title |
|---|
| 中国石油化工集团公司人事部: "《延迟焦化装置操作工》", 31 March 2008 * |
| 张峰斌: "140万t/a延迟焦化装置焦炭塔的制造及质量控制", 《河南化工》 * |
| 李文祥: "《铆工》", 30 November 1989, 中国建筑工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105733650A (en) * | 2014-12-06 | 2016-07-06 | 中国石油化工股份有限公司 | Novel coke tower and needle coke production method |
| CN105733650B (en) * | 2014-12-06 | 2017-04-12 | 中国石油化工股份有限公司 | Novel coke tower and needle coke production method |
| CN109233886A (en) * | 2018-10-26 | 2019-01-18 | 重庆润科新材料技术有限公司 | Coalite tar prepares the production method of coal-based needle coke in a kind of utilization |
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Application publication date: 20120718 |