CN104974782A - Delayed-coking coke tower outside-system heating and preheating device and technology - Google Patents
Delayed-coking coke tower outside-system heating and preheating device and technology Download PDFInfo
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- CN104974782A CN104974782A CN201510362086.7A CN201510362086A CN104974782A CN 104974782 A CN104974782 A CN 104974782A CN 201510362086 A CN201510362086 A CN 201510362086A CN 104974782 A CN104974782 A CN 104974782A
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- coke drum
- coke
- collecting device
- delayed
- process furnace
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- 239000000571 coke Substances 0.000 title claims abstract description 50
- 238000004939 coking Methods 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- 238000005516 engineering process Methods 0.000 title abstract description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000003111 delayed effect Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 4
- 230000035924 thermogenesis Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012802 pre-warming Methods 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
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- Coke Industry (AREA)
Abstract
The invention relates to a delayed-coking coke tower outside-system heating and preheating device and technology. The device comprises two coke towers, a heating furnace, heating equipment, a variable-frequency circulating fan, and a filter; and is characterized in that the upper parts of two coke towers, the filter, the variable-frequency circulating fan, and the heating equipment in the heating furnace are connected to the lower parts of two coke tower through pipelines so as to form an enclosed loop, and circulating thermal-conductive gas can circulate the enclosed loop to preheat the coke towers. The provided device can use the thermal energy out of the delayed-coking device production system to safely preheat the coke towers to a required operation temperature; can reduce the periodic fluctuation of device, prolong the service life of coke towers, increase the liquid yield of device, and improve the product quality, and overcomes the shortages due to the intermittent production mode of delayed-coking device coke tower.
Description
Technical field
The present invention relates to technical field of petrochemical industry, be specifically related to the outer heat supply primary heater unit of a kind of delayed coking coke drum system and technique.
Background technology
The delayed coking unit of current petrochemical industry, the flow process of the preheating of its coke drum opens the ball collar valve of new column overhead, the high-temperature oil gas of producing tower flows to heat exchange post liquefaction at the bottom of tower from the tower top of new tower, enter and get rid of oil tank and be preheating to about 330 DEG C to Xin Tata wall, the temperature after preheating in coke drum is presented height and is bent down distribution.
This nothing blocks up burnt valve coke drum pre-heating technique, generally needs 6 hours, by the high-temperature oil gas of producing tower, new tower is preheating to about 330 DEG C, and when cutting tower, feeding temperature is 487 DEG C, and the difference variation of moment 150 DEG C can cause damage by STRENGTH ON COKE tower, reduces the work-ing life of coke drum; Meanwhile, the envrionment temperature of about 330 DEG C, new tower, can not meet the heat of required absorption during residual oil thermo-cracking, residual oil heat scission reaction is insufficient; So cause coke drum to cut material balance and the heat balance destruction of whole system before and after tower, cause the cyclic fluctuation of apparatus system, add the operation easier of device, reduce liquid to receive, reduce the control accuracy of quality product, add the coke powder carrying amount of system, and cause the unnecessary loss of heat energy, increase the coking rate of furnace tubing.
Summary of the invention
The object of the invention is the defect overcoming prior art, material balance and the heat balance of a kind of ballast system provided, improve the quality of products, save energy and reduce the cost, improve that liquid is received, the operation of optimization device system process, and delayed coking coke drum primary heater unit and the technique in coke drum work-ing life can be extended.
For achieving the above object, the present invention includes two coke drums, process furnace, interior heat collecting device, frequency conversion recirculation blower and strainer, it is characterized in that, two described coke drum tops and strainer, interior heat collecting device pipeline in frequency conversion recirculation blower and process furnace is connected to two coke drum bottoms, form close loop, through circulating heat conduction gas in close loop, in described process furnace, interior heat collecting device is to gas heating, promote gas by frequency conversion recirculation blower or gas by thermogenesis siphon kinetic energy to circulate in close loop, the temperature of needs is preheating to coke drum, the heat supply mode of coke drum preheating is that production system supplies outward.
Interior heat collecting device in described process furnace is furnished with heat insulation and controlling temperature system.
Interior heat collecting device in described process furnace is intermittent operation mode.
Interior heat collecting device in described process furnace can be multiple-type system.
Recycle gas in described close loop comprises various gas.
The present invention compares with existing coke drum preheating flow process, adopt the heat outside delayed coker produces system that coke drum safety is preheating to suitable service temperature, so extend coke drum work-ing life, steadily the material balance of apparatus system and heat balance, reduce the cyclic swing of device; The liquid improving device is received, and improves the control accuracy of quality product, reduces the change of gas speed and the carrying amount of coke powder of system, reduces the coking rate of furnace tubing, shortens coke drum warm up time; Reduce or avoid and get rid of oil (oil that the new tower of preheating produces) formation, save the energy consumption of pump, decrease the generation of system sump oil, optimize many drawbacks that Coking Tower for Delayed Coking Unit batch production brings.
Accompanying drawing explanation
The outer heat supply preheating facility schematic diagram of a kind of delayed coking coke drum system that the embodiment of the present invention shown in Fig. 1 provides;
See Fig. 1,1 is process furnace; 2 is interior heat collecting device; 3 is frequency conversion recirculation blower; 4 is strainer; 5 is pressure controlled valve; 6 is thermopair.
Embodiment
In order to make the object of invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, as an embodiment, the outer heat supply primary heater unit of a kind of delayed coking coke drum system and technique, two coke drum top are connected with pipeline with the interior heat collecting device 2 in process furnace, frequency conversion recirculation blower 3, strainer 4 with bottom, form close loop; Steam for the recycle gas in close loop: in the normal preheating flow process of the new tower of coke drum, steam catches up with air, after pressure testing link, does not become flat, dehydration link, at this moment the pressure of the new tower of coke drum is about 0.3Mpa; With the interior heat collecting device 2 in the through process furnace of the steam of coke drum Xin Tanei, frequency conversion recirculation blower 3, strainer 4 place circulation line, steam is discharged from pressure controlled valve 5, allows whole close loop fill interior full steam, and in lower draining, sets up close loop flow process.The heat insulation and controlling temperature system opening interior heat collecting device in process furnace, to the heating of close loop inner vapor, promotes steam by frequency conversion recirculation blower and circulates in close loop, to the new tower safe prewarming of coke drum to the temperature needed; The heat insulation and controlling temperature system of interior heat collecting device in process furnace, controlled interior heat collecting device temperature out processed is within positive and negative 15 DEG C.In the process of giving the new tower preheating of coke drum, the vapor pressure controlled in close loop is no more than Coke Drum Design authorized pressure 0.35MPa.The highest preheating temperature is no more than Coke Drum Design allowable temperature.After the new tower of coke drum is preheating to the temperature of needs, run steam by pressure controlled valve 5, to drain the steam in the new tower of coke drum according to the temperature variation of thermopair 6 as far as possible, reduce the vapor volume entering fractionating system, in order to avoid increase the unnecessary load of system.
The present invention's above coke drum preheating embodiment, the temperature after preheating in coke drum presents low high distribution.
Claims (3)
1. the outer heat supply primary heater unit of delayed coking coke drum system and technique, comprise two coke drums, process furnace, interior heat collecting device, frequency conversion recirculation blower and strainer, it is characterized in that, two described coke drum tops and strainer, interior heat collecting device pipeline in frequency conversion recirculation blower and process furnace is connected to two coke drum bottoms, form close loop, through circulating heat conduction gas in close loop, in described process furnace, interior heat collecting device is to gas heating, promote gas by frequency conversion recirculation blower or gas by thermogenesis siphon kinetic energy to circulate in close loop, to the temperature that coke drum preheating needs, the heat supply mode of coke drum preheating is that production system supplies outward.
2. the outer heat supply primary heater unit of a kind of delayed coking coke drum system according to claim 1 and technique, it is characterized in that, the interior heat collecting device in described process furnace is furnished with heat insulation and controlling temperature system.
3. the outer heat supply primary heater unit of a kind of delayed coking coke drum system according to claim 1 and technique, it is characterized in that, the interior heat collecting device in described process furnace is intermittent operation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362086.7A CN104974782A (en) | 2015-06-26 | 2015-06-26 | Delayed-coking coke tower outside-system heating and preheating device and technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510362086.7A CN104974782A (en) | 2015-06-26 | 2015-06-26 | Delayed-coking coke tower outside-system heating and preheating device and technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104974782A true CN104974782A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510362086.7A Pending CN104974782A (en) | 2015-06-26 | 2015-06-26 | Delayed-coking coke tower outside-system heating and preheating device and technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104974782A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102688A (en) * | 2017-12-28 | 2018-06-01 | 林永波 | A kind of delayed coking coke drum heat control technique |
| CN109722269A (en) * | 2019-01-16 | 2019-05-07 | 林永波 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
| 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 |
| WO2021135802A1 (en) * | 2019-12-31 | 2021-07-08 | 中国石油化工股份有限公司 | System and method for producing needle coke |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487100U (en) * | 2013-06-26 | 2014-03-19 | 林永波 | Coke tower preheating device |
| CN104232145A (en) * | 2014-05-28 | 2014-12-24 | 林永波 | Gas circular preheating device and process for delayed coking coke tower |
| CN204251558U (en) * | 2014-05-28 | 2015-04-08 | 林永波 | A kind of delayed coking coke drum gas circulation primary heater unit |
-
2015
- 2015-06-26 CN CN201510362086.7A patent/CN104974782A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203487100U (en) * | 2013-06-26 | 2014-03-19 | 林永波 | Coke tower preheating device |
| CN104232145A (en) * | 2014-05-28 | 2014-12-24 | 林永波 | Gas circular preheating device and process for delayed coking coke tower |
| CN204251558U (en) * | 2014-05-28 | 2015-04-08 | 林永波 | A kind of delayed coking coke drum gas circulation primary heater unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108102688A (en) * | 2017-12-28 | 2018-06-01 | 林永波 | A kind of delayed coking coke drum heat control technique |
| CN109722269A (en) * | 2019-01-16 | 2019-05-07 | 林永波 | A kind of delayed coking coke drum mechanical steam recompression pre-heating technique |
| 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 |
| WO2021135802A1 (en) * | 2019-12-31 | 2021-07-08 | 中国石油化工股份有限公司 | System and method for producing needle coke |
| US11946003B2 (en) | 2019-12-31 | 2024-04-02 | China Petroleum & Chemical Corporation | System and method for producing needle coke |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151014 |