CN109722269A - A kind of delayed coking coke drum mechanical steam recompression pre-heating technique - Google Patents
A kind of delayed coking coke drum mechanical steam recompression pre-heating technique Download PDFInfo
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- CN109722269A CN109722269A CN201910040957.1A CN201910040957A CN109722269A CN 109722269 A CN109722269 A CN 109722269A CN 201910040957 A CN201910040957 A CN 201910040957A CN 109722269 A CN109722269 A CN 109722269A
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- coke drum
- delayed coking
- heating
- compression machine
- vapour compression
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Abstract
The present invention relates to a kind of delayed coking coke drum mechanical steam recompression pre-heating techniques, including two coke drums, heating equipment, vapour compression machine, automatic control adjustable valve and combustible gas alarming instrument, it is characterized in that, two coke drum tops and automatic control adjustable valve, combustible gas alarming instrument, vapour compression machine and heating equipment are connected to two coke drum lower parts with pipeline, form close loop；Overheated steam is full of in close loop, the mechanical energy of the vapour compression machine will enter heating equipment after the next steam adherence pressure of coke drum top, promotion temperature and reheat, preheats subsequently into coke drum bottom to coke drum；The present invention uses mechanical steam recompression technology, the vapor of conveying process conditions harshness can be stablized as heating meson, it is preheated to coke drum, energy-saving and emission-reduction, the steady material balance and heat balance of apparatus system, reduce the cyclic swing of device, the liquid for improving device is received, product quality is improved, coke drum preheating time is shortened, avoids and gets rid of oily formation.
Description
Technical field
The present invention relates to technical field of petrochemical industry, and in particular to Coking Tower for Delayed Coking Unit mechanical steam recompression
Pre-heating technique.
Background technique
The delayed coking unit of petrochemical industry at present, the process of the preheating of coke drum are to open the ball collar of new column overhead
Valve produces after the high-temperature oil gas of tower flows to tower bottom heat exchange liquefaction from the tower top of new tower, into getting rid of oil tank to give the preheating of new tower tower wall
To 330 DEG C or so.
The stifled burnt valve coke drum pre-heating technique of this nothing, generally needs 6 hours, new tower is preheated with the high-temperature oil gas of production tower
To 330 DEG C or so, and when cutting tower, feeding temperature is 487 DEG C, 150 DEG C of difference variation of moment can STRENGTH ON COKE tower damage, subtract
The service life of few coke drum；Meanwhile new 330 DEG C of tower or so of environment temperature, it can not meet required absorption when residual oil thermal cracking
Heat, residual oil heat scission reaction is insufficient；So the material balance of whole system and heat are flat before and after causing coke drum to cut tower
Weighing apparatus destroys, and causes the cyclic fluctuation of apparatus system, increases the operation difficulty of device, reduces liquid receipts, reduces product matter
The control precision of amount, and cause the unnecessary loss of heat.
Summary of the invention
Present invention aims to overcome that the defect of the prior art, the material balance and heat of a kind of ballast system provided are flat
Weighing apparatus improves product quality, is energy-saving, improving liquid receipts, optimization apparatus system technological operation, shortens coke drum preheating time,
Avoid the delayed coking coke drum pre-heating technique for getting rid of oil formation.
To achieve the above object, the present invention includes two coke drums, heating equipment, vapour compression machine, automatic control adjustable valve and can
Fire gas alarm instrument, which is characterized in that two coke drum tops and automatic control adjustable valve, combustible gas alarming instrument, steam
Compressor and heating equipment are connected to two coke drum lower parts with pipeline, form close loop；Superheated water is full of in close loop
The mechanical energy of steam, the vapour compression machine will enter heating after the next steam adherence pressure of coke drum top, promotion temperature
Equipment reheats, and preheats subsequently into coke drum bottom to coke drum, so recycles, the temperature of coke drum is gradually increased, until
Coke drum is preheating to the temperature of needs.
The operating temperature of the vapour compression machine is variation, and range is 80 DEG C -350 DEG C.
The range of the vapour compression machine adherence pressure is 0.03MPa-0.5MPa.
The range that the vapour compression machine promotes temperature is 5 DEG C -150 DEG C.
The range that the heating equipment is heated to steam is 330 DEG C -550 DEG C.
Temperature range after the delayed coking coke drum lower part preheating is 330 DEG C -550 DEG C.
The delayed coking coke drum mechanical steam recompression pre-heating technique operation is intermittent operation mode.
The present invention compared with the pre- thermal flow process of coke drum compare, using mechanical steam recompression technology, can stablize defeated
It send the vapor of process conditions harshness as heating meson, and promotes the pressure and temperature of steam, the preheating of coke drum safety
To suitable operation temperature, energy-saving and emission-reduction, the steady material balance and heat balance of apparatus system reduces the period of device
Fluctuation, the liquid for improving device are received, improve product quality, shorten coke drum preheating time, avoid and get rid of oily formation.
Detailed description of the invention
A kind of delayed coking coke drum mechanical steam recompression pre-heating technique provided in an embodiment of the present invention shown in Fig. 1
Schematic diagram；
Referring to Fig. 1,1 is coke drum；2 be heating equipment；3 be vapour compression machine；4 be flammable gas alarm；5,6,7 be automatic control
Regulating valve；8 be thermocouple.
Specific embodiment
In order to which the objects, technical solutions and advantages of invention are more clearly understood, below in conjunction with attached drawing, the present invention is carried out
It is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit
The present invention.
As shown in Figure 1, as an embodiment, a kind of delayed coking coke drum mechanical steam recompression pre-heating technique, two
A coke drum 1, top and automatic control adjustable valve 5,6,7, flammable gas alarm 4, vapour compression machine 3, heating equipment 2 are connected with pipeline
Two coke drum lower parts are connected to, close loop is formed；In the new tower of coke drum, normally pre- thermal flow process, steam catch up with air, and pressure testing is run
Gas, after being dehydrated link, at this moment the pressure of the new tower of coke drum is 0.2Mpa or so；Automatic control adjustable valve 5 is closed, 6 is opened, 7 open, with coke
Charcoal tower 1, steam perforation flammable gas alarm 4, vapour compression machine 3, heating equipment 2, place's circulation line, steam is from from control
It saves valve 7 to be discharged, allows entire close loop to fill interior full steam, and drain in lower, establish close loop process.Start steam compressed
Steam adherence pressure that machine comes to coke drum top promotes temperature, and heating equipment is entered after both vapor compression and is reheated and closed
It is recycled in loop, to the new tower safe prewarming of coke drum to the temperature needed；It is severe that vapour compression machine can stablize conveying process conditions
For the vapor at quarter as heating meson, the range that heating equipment is heated to steam is 300 DEG C -550 DEG C, is giving the new tower of coke drum
During preheating, controls the steam pressure in close loop and be no more than Coke Drum Design permission pressure, highest preheating temperature is not
Allow temperature more than Coke Drum Design, after the new tower of coke drum is preheating to the temperature of needs, steam run by pressure-control valve 7,
The steam in the new tower of coke drum is exhausted as far as possible according to the temperature change of thermocouple 8, reduces the vapor volume for entering fractionating system, in order to avoid
The unnecessary load of increase system.
The above coke drum of the present invention preheats embodiment, and the quality of the steam meets Pistonless compressor and heating equipment
Technique requirement.
Claims (7)
1. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique, including two coke drums, heating equipment, vapour pressure
Contracting machine, automatic control adjustable valve and flammable gas alarm, which is characterized in that two coke drum tops and automatic control adjustable valve,
Flammable gas alarm, vapour compression machine and heating equipment are connected to two coke drum lower parts with pipeline, form close loop；It is close
The interior steam adherence pressure that full of overheated steam, the mechanical energy of the vapour compression machine carrys out coke drum top of closed-loop,
Enter heating equipment reheating after promoting temperature, gives coke drum to preheat subsequently into coke drum bottom, so recycle, be gradually increased
The temperature of coke drum, the temperature until coke drum being preheating to needs.
2. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the operating temperature of the vapour compression machine is variation, and range is 80 DEG C -350 DEG C.
3. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the range of the vapour compression machine adherence pressure is 0.03MPa-0.5MPa.
4. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the range that the vapour compression machine promotes temperature is 5 DEG C -150 DEG C.
5. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the range that the heating equipment is heated to steam is 330 DEG C -550 DEG C.
6. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the temperature range after the delayed coking coke drum lower part preheating is 330 DEG C -550 DEG C.
7. a kind of delayed coking coke drum mechanical steam recompression pre-heating technique according to claim 1, feature exist
In the technological operation is intermittent operation mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910040957.1A CN109722269A (en) | 2019-01-16 | 2019-01-16 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
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| CN201910040957.1A CN109722269A (en) | 2019-01-16 | 2019-01-16 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527548A (en) * | 2019-09-06 | 2019-12-03 | 林永波 | A kind of delayed coking coke drum conduction oil circulation preheating device and technique |
Citations (7)
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|---|---|---|---|---|
| US4797197A (en) * | 1985-02-07 | 1989-01-10 | Mallari Renato M | Delayed coking process |
| CN104232145A (en) * | 2014-05-28 | 2014-12-24 | 林永波 | Gas circular preheating device and process for delayed coking coke tower |
| CN204111680U (en) * | 2014-07-31 | 2015-01-21 | 天津市瑞德赛恩新材料开发有限公司 | A kind of delayed coking reaction device |
| CN104974782A (en) * | 2015-06-26 | 2015-10-14 | 林永波 | Delayed-coking coke tower outside-system heating and preheating device and technology |
| CN107510949A (en) * | 2017-09-26 | 2017-12-26 | 深圳市蓝石环保科技有限公司 | A kind of MVR vapo(u)rization systems |
| CN108102688A (en) * | 2017-12-28 | 2018-06-01 | 林永波 | A kind of delayed coking coke drum heat control technique |
| CN108159719A (en) * | 2018-01-08 | 2018-06-15 | 南京工业大学 | A kind of energy-efficient MVR evaporation concentration systems |
-
2019
- 2019-01-16 CN CN201910040957.1A patent/CN109722269A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4797197A (en) * | 1985-02-07 | 1989-01-10 | Mallari Renato M | Delayed coking process |
| CN104232145A (en) * | 2014-05-28 | 2014-12-24 | 林永波 | Gas circular preheating device and process for delayed coking coke tower |
| CN204111680U (en) * | 2014-07-31 | 2015-01-21 | 天津市瑞德赛恩新材料开发有限公司 | A kind of delayed coking reaction device |
| CN104974782A (en) * | 2015-06-26 | 2015-10-14 | 林永波 | Delayed-coking coke tower outside-system heating and preheating device and technology |
| CN107510949A (en) * | 2017-09-26 | 2017-12-26 | 深圳市蓝石环保科技有限公司 | A kind of MVR vapo(u)rization systems |
| CN108102688A (en) * | 2017-12-28 | 2018-06-01 | 林永波 | A kind of delayed coking coke drum heat control technique |
| CN108159719A (en) * | 2018-01-08 | 2018-06-15 | 南京工业大学 | A kind of energy-efficient MVR evaporation concentration systems |
Non-Patent Citations (1)
| Title |
|---|
| 赵家荣 等主编: "《十二五重点节能工程研究报告》", vol. 2013, 中国经济出版社, pages: 217 - 219 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527548A (en) * | 2019-09-06 | 2019-12-03 | 林永波 | A kind of delayed coking coke drum conduction oil circulation preheating device and technique |
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