CN110527548A - A kind of delayed coking coke drum conduction oil circulation preheating device and technique - Google Patents
A kind of delayed coking coke drum conduction oil circulation preheating device and technique Download PDFInfo
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- CN110527548A CN110527548A CN201910842360.9A CN201910842360A CN110527548A CN 110527548 A CN110527548 A CN 110527548A CN 201910842360 A CN201910842360 A CN 201910842360A CN 110527548 A CN110527548 A CN 110527548A
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- coke drum
- oil
- heating
- preheating
- conduction oil
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Coke Industry (AREA)
Abstract
The present invention relates to a kind of delayed coking coke drum conduction oil circulation preheating device and techniques, in delayed coking coke drum warm, guide hot oil into coke drum, liquid level is established into oil tank is got rid of, after Heat-transfer Oil Pump conveys conduction oil to heating equipment heating, coke drum top is returned, conduction oil is formed and recycles pre-heating system, the temperature of needs is preheating to coke drum；The present invention compared with the pre- thermal flow process of coke drum compare, using the heat outside delayed coking unit production system the operation temperature for being preheating to needs of coke drum safety, the steady material balance and heat balance of delayed coking unit system, reduce the cyclic swing of device, the liquid for improving device is received, improve the control precision of product quality, reduce the coking rate of furnace tubing, shorten coke drum preheating time, it is formed without oil (oil for preheating new tower generation) is got rid of, optimizes many drawbacks of Coking Tower for Delayed Coking Unit batch production bring.
Description
Technical field
The present invention relates to technical field of petrochemical industry, and in particular to the device and work of the pre- thermal flow process of delayed coking coke drum
Skill.
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 temperature after preheating in coke drum presents the low distribution of relative superiority or inferiority.
The stifled burnt valve coke drum pre-heating technique of this nothing, needs or so 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 environment temperatures, it can not meet required absorption when residual oil thermal cracking
Heat, residual oil heat scission reaction are insufficient；So coke drum is caused to cut the material balance and heat balance of whole system before and after tower
It destroys, causes the cyclic fluctuation of apparatus system, increase the operation difficulty of device, reduce liquid receipts, reduce product quality
Control precision, increase the coke powder carrying amount of system, and cause the unnecessary loss of thermal energy, increase the coking of furnace tubing
Rate.
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 the pre- hot charging of delayed coking coke drum that liquid is received, optimizes apparatus system technological operation
It sets and technique.
To achieve the above object, the present invention includes two coke drums, gets rid of oil tank, Heat-transfer Oil Pump and heating equipment, and feature exists
In in delayed coking coke drum warm, for guidance hot oil into coke preheating tower, then gravity flow enters by filter gets rid of oil
Tank establishes liquid level, and after Heat-transfer Oil Pump conveys conduction oil to heating equipment heating, conduction oil returns to coke preheating top of tower, and formation is led
Hot-oil circulation pre-heating system, the Heat-transfer Oil Pump push conduction oil to recycle in closed-cycle system, and heating equipment is to thermally conductive
Oil heating, the temperature of needs is preheating to coke drum.
The heating equipment can be combustion gas, electric heating multiple heating mode.
For the heating equipment by design, starting heating and stopping heating are convenient and efficient.
Have vaporization phenomenon after heat-conducting oil heating in the close loop, into coke drum after cooling liquid, release vaporization
Latent heat.
In coke drum warm, the ball valve of openable coke preheating top of tower or get rid of oil tank go emptying tower ball valve,
Exhaust the vapor in conduction oil circulation pre-heating system, the pressure in control system.
After coke drum is preheating to the temperature of needs, conduction oil can be stayed in and be got rid of in oil tank and pipeline, can also be sent to point
Evaporate tower.
The present invention compared with the pre- thermal flow process of coke drum compare, using the heat outside delayed coking unit production system burnt
Charcoal tower safety is preheating to suitable operation temperature, so the steady material balance and heat balance of apparatus system, reduces
The cyclic swing of device, the liquid for improving device are received, improve the control precision of product quality, reduce the carrying amount of coke powder, reduces
The coking rate of furnace tubing, shortens coke drum preheating time；It is formed, is optimized without oil (oil for preheating new tower generation) is got rid of
The many drawbacks of Coking Tower for Delayed Coking Unit batch production bring.
Detailed description of the invention
A kind of delayed coking coke drum conduction oil circulation preheating facility schematic diagram provided in an embodiment of the present invention shown in Fig. 1；
Referring to Fig. 1,1 is coke drum；2 be filter；3 be to get rid of oil tank；4 be Heat-transfer Oil Pump；5 be heating equipment；6 be flow
Control valve；7 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 conduction oil circulation preheating device and technique, In
In delayed coking coke drum warm, guidance hot oil is into coke preheating tower 1, and then filter 2 is passed through in gravity flow, into getting rid of oil tank
3 establish liquid level, and after Heat-transfer Oil Pump 4 conveys conduction oil to the heating of heating equipment 5, conduction oil returns to preheating by flow control valve 6
Coke drum top forms conduction oil and recycles pre-heating system, and the Heat-transfer Oil Pump pushes conduction oil to follow in closed-cycle system
Ring, heating equipment are preheating to the temperature of needs to coke drum to heat-conducting oil heating；During being preheated to coke drum, control
The pressure of conduction oil circulation pre-heating system is no more than coke drum and sets and get rid of Oil Tank Design permission pressure, and highest preheating temperature is no more than
Coke drum and get rid of oil tank design allow temperature, the ball valve of openable coke preheating top of tower or get rid of oil tank go emptying tower ball
Valve, exhausts the water vapour in conduction oil circulation pre-heating system, and the pressure in control system is preheating to the temperature of needs in coke drum
Afterwards, conduction oil circulation pre-heating system stops circulation, and conduction oil can be stayed in and be got rid of in oil tank and pipeline, can also be sent to fractionating column.
Claims (5)
1. a kind of delayed coking coke drum conduction oil circulation preheating device and technique, including two coke drums, get rid of oil tank, Heat-transfer Oil Pump
And heating equipment, which is characterized in that in delayed coking coke drum warm, guide hot oil into coke preheating tower, then certainly
Stream establishes liquid level into oil tank is got rid of by filter, and after Heat-transfer Oil Pump conveys conduction oil to heating equipment heating, conduction oil is returned
Coke preheating top of tower forms conduction oil and recycles pre-heating system, and the Heat-transfer Oil Pump pushes conduction oil in closed-cycle system
Interior circulation, heating equipment are preheating to the temperature of needs to coke drum to heat-conducting oil heating.
2. coke drum conduction oil circulation preheating device according to claim 1 and technique, which is characterized in that the heating
Equipment can be combustion gas, electric heating multiple heating mode.
3. coke drum conduction oil circulation preheating device according to claim 1 and technique, which is characterized in that the heating
For equipment by design, starting heating and stopping heating are convenient and efficient.
4. coke drum conduction oil circulation preheating device according to claim 1 and technique, which is characterized in that the closed loop
Have vaporization phenomenon after heat-conducting oil heating in road, into coke drum after cooling liquid, discharge the latent heat of vaporization.
5. in coke drum warm, the ball valve of openable coke preheating top of tower or the ball valve that oil tank removes emptying tower is got rid of, row
Fall the water vapour in conduction oil circulation pre-heating system, the pressure in control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842360.9A CN110527548A (en) | 2019-09-06 | 2019-09-06 | A kind of delayed coking coke drum conduction oil circulation preheating device and technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910842360.9A CN110527548A (en) | 2019-09-06 | 2019-09-06 | A kind of delayed coking coke drum conduction oil circulation preheating device and technique |
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| CN110527548A true CN110527548A (en) | 2019-12-03 |
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| CN201910842360.9A Pending CN110527548A (en) | 2019-09-06 | 2019-09-06 | A kind of delayed coking coke drum conduction oil circulation preheating device and technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817488A (en) * | 2021-09-26 | 2021-12-21 | 辽宁宝来生物能源有限公司 | Steam preheating system adopted in oil-based needle coke production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113817488A (en) * | 2021-09-26 | 2021-12-21 | 辽宁宝来生物能源有限公司 | Steam preheating system adopted in oil-based needle coke production process |
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