CN106433739B - A kind of energy-saving system of delayed coking unit - Google Patents
A kind of energy-saving system of delayed coking unit Download PDFInfo
- Publication number
- CN106433739B CN106433739B CN201610685835.4A CN201610685835A CN106433739B CN 106433739 B CN106433739 B CN 106433739B CN 201610685835 A CN201610685835 A CN 201610685835A CN 106433739 B CN106433739 B CN 106433739B
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- Prior art keywords
- steam
- tower
- steam generator
- energy
- vented
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- 238000004939 coking Methods 0.000 title claims abstract description 21
- 230000003111 delayed effect Effects 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000047 product Substances 0.000 abstract description 15
- 239000000463 material Substances 0.000 abstract description 6
- 239000006227 byproduct Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 241000772415 Neovison vison Species 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- C10G9/005—Coking (in order to produce liquid products mainly)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
-
- 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
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/40—Characteristics of the process deviating from typical ways of processing
- C10G2300/4081—Recycling aspects
Landscapes
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a kind of energy-saving systems of delayed coking unit, including being vented tower, a steam generator is arranged in the tower bottom for being vented tower, heat exchanger tube is equipped in steam generator, the tower bottom oil for being vented tower is connected to heat exchanger tube by column bottoms pump, and steam generator shell is equipped with medium water inlet and steam (vapor) outlet.Steam (vapor) outlet is connect with full factory's steam pipe network.Solve the problems, such as that emptying Tower System consumes energy high in existing apparatus, and the steam of by-product high added value simultaneously.Technically reliable rationally, efficiently, is easily implemented, and steam can not only occur and used for equipment of itself in device and pipeline tracing and other devices, but also cooled material (product), and then achieved the purpose that recycle oil product.
Description
Technical field
The present invention relates to the energy use technology that Tower System is vented in a kind of delayed coking unit more particularly to a kind of delays
The energy-saving system of cracking units.
Background technique
Delayed coking unit is a kind of heat processing technique of mink cell focus, be oil plant light materialization of heavy oil, improve refinery it is light
A kind of main means of oil yield.Delay coking process be usually using heavy oil, residual oil, even pitch as raw material, high temperature (about
500 DEG C) under carry out depth thermal cracking and condensation reaction, production rich gas, raw gasoline, diesel oil, wax oil and coke technology.It is
One of the main method of world's residual oil deep processing, processing capacity account for the one third of residual oil processing capacity.
So-called delay, which refers to, is brought rapidly up coking oil to pyrogenetic reaction temperature by heating stove heating, but in reaction boiler tube
Inside not green coke, but carry out pyrogenetic reaction again into coke drum, therefore have delayed-action, referred to as Delayed Coking Technology.Typically
One furnace (heating furnace), two tower (coking tower) or two furnaces, four tower, heating furnace continuous feed, coking tower alternate operation.
But in middle petroleum, middle petrochemical industry and local refinery, for being vented the energy of Tower System in delayed coking unit
A large amount of thermal energy not high using attention rate all the time, that the tower bottom oil for being vented Tower System carries, are made using recirculated water
For cooling medium, water consumption is big, and thermal energy does not utilize well.
Summary of the invention
A kind of energy saving for the delayed coking unit that the object of the present invention is to provide arts reliably, rationally, efficiently, easily implements
System.
The purpose of the present invention is what is be achieved through the following technical solutions:
The energy-saving system of delayed coking unit of the invention, including emptying tower, the tower bottom setting one of the emptying tower
Platform steam generator, the steam generator is interior to be equipped with heat exchanger tube, and the tower bottom oil of the emptying tower is connected to institute by column bottoms pump
Heat exchanger tube is stated, the steam generator shell is equipped with medium water inlet and steam (vapor) outlet.
As seen from the above technical solution provided by the invention, the section of delayed coking unit provided in an embodiment of the present invention
System can be utilized, solves the problems, such as that emptying Tower System consumes energy high in existing apparatus, and the steam of by-product high added value simultaneously.Skill
Art is reliable, rationally, efficiently, easily implements, and steam can both occur and used for equipment of itself in device and pipeline tracing and other devices,
Material (product) is cooled again, and then achievees the purpose that recycle oil product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the energy-saving system of delayed coking unit provided in an embodiment of the present invention.
In figure:
A1, which steams out, to drop a hint；A2 gets rid of oil；A3 tracing steam；A4 deoxygenated water；B1 steam steam lead net；
B2 is vented tower overhead gas；B3 steam condensate；
1 be emptying tower, 2 be emptying column bottoms pump, 3 be emptying tower bottom steam generator.
Fig. 2 is steam generator nozzle figure in the embodiment of the present invention.
In figure:
N1 is emptying tower tower bottom oil inlet, and N2 is tower bottom oil export, and N3 is deoxidation water inlet, and N4 is steam (vapor) outlet, nozzle
N8-1 and N8-2 is liquidometer connector, and N6, N7 are sewage draining exit, and N5 is relief valve port.
Specific embodiment
The embodiment of the present invention will be described in further detail below.
The energy-saving system of delayed coking unit of the invention, preferable specific embodiment is:
Including being vented tower, the tower bottom of the emptying tower is arranged a steam generator, is equipped with and changes in the steam generator
The tower bottom oil of heat pipe, the emptying tower is connected to the heat exchanger tube by column bottoms pump, and the steam generator shell is equipped with medium
Water inlet and steam (vapor) outlet.
The steam (vapor) outlet is connect with full factory's steam pipe network.
The medium water is deoxygenated water.
Level control is carried out than three choosing, steam flow and feedwater flow parameters using double liquid level.
The energy-saving system of delayed coking unit of the invention, solve in existing apparatus be vented Tower System consume energy it is high
Problem, and the steam of by-product high added value simultaneously.Technically reliable rationally, efficiently, is easily implemented, and steam can both occur in device
Equipment of itself and pipeline tracing and other devices use, and cool material (product), and then achieve the purpose that recycle oil product.
The present invention substitutes the water cooler in prior art design using a kind of steam generator, makes the oil product for being vented tower bottom
The a large amount of thermal energy carried are fully utilized and occur the steam of high added value, in device or other users use, meanwhile, tower
Base oil product are winding is effectively cooled, and a part of oil product is as overhead reflux, material in cooling tower, reach the mesh of preferably recycling oil product
, remaining oil product is sent out outside battery limit (BL).
Steam generator in the present invention, deoxygenated water enter from shell-side bottom N3, are vented tower tower bottom oil as pipe side N1 charging.
Emptying tower bottom oil is cooled and exchanging heat with deoxygenated water, while steam occurs.It is chosen by the double liquid level of steam generator
Or two take one and feed rate that deoxygenated water is controlled after the flow summation of steam, is balanced with reaching deoxygenated water and steam rates
Purpose.
The present invention can be used for being vented the heat tracing and other equipment, the heat tracing of pipeline of tower using the steam after power-saving technology.
Specific embodiment:
As shown in Figure 1 and Figure 2, in certain delayed coking process units, emptying tower tower bottom oil leads to after the emptying discharge of column bottoms pump 2
It crosses N1 nozzle to enter in emptying tower tower bottom steam generator, deoxygenated water enters steam generator, the two from shell-side bottom N3 nozzle
By heat exchange, the emptying tower tower bottom oil to get off that is cooled is gone out by N2 nozzle, is divided into 2 parts: a part returns to emptying tower 1
Tower top is as oil gas in reflux, cooling tower, with the oil product in maximum gas recovery；A part is used as bottom product out-of-bounds
Area.The saturated vapor of a large amount of heat of deoxygenated water water suction and the generation 1.0MPa that gasifies, goes out steam generator by N4 nozzle, is incorporated to complete
Factory's steam pipe network is used for device and user.
Safety valve discharge outlet N5 is set simultaneously on steam generator；Sewage draining exit N6, N7；And double liquid level control instrument mouth
N8-1,N8-2.Steam generator by the numerical value of two liquidometers carry out than choosing, two take one with controlled after the flow summation of steam
The charging of deoxygenated water, to guarantee the balance of deoxygenated water and steam rates.
In delayed coking unit, feed throughput is 125t/h (annual amount for the treatment of is 1,000,000 tons), and emptying Tower System is daily
7 hours are operated continuously, emptying tower bottom flow is 95.33t/h, 249 DEG C of outlet temperature, its condensation point or more is required cool to, this
150 DEG C of project demand, the heat carried is about 5220kW.
The amount of energy saving that can be obtained by using this technology:
One emptying tower bottom steam generator is set, steam 7900Kg/h (1.0MPa, 179 DEG C) can occur, year steams
Vapour 18414.9t/a；Meanwhile recirculated water (32 DEG C of import, export 75 DEG C) consumption 104.7t/h is saved, year saving about 24.4 ×
104t/a converts into about 73.22 ten thousand yuan/year of RMB based on 3 yuan/ton of recirculated water unit price (containing tax)；Steam is generated (to contain by unit price
Tax) 120 yuan/ton of meters, convert into about 220.98 ten thousand yuan/year of RMB.Deoxidation water consumption converts into people based on 8 yuan/ton of unit price (containing tax)
14.73 ten thousand yuan/year of people's coin；Total year saves about 279.47 ten thousand yuan of RMB.
In conclusion the energy saving skill for being exclusively used in delayed coking unit emptying Tower System that of the embodiment of the present invention provides
Art can not only cool down product material, and then as material in reflux cooling tower, achieve the purpose that recycle oil product, and can occur
Steam is device or other user services.The technical matters process is simple, easily implements, heat recovery efficiency height.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (1)
1. a kind of energy-saving system of delayed coking unit, which is characterized in that including being vented tower, the tower bottom of the emptying tower is set
A steam generator is set, heat exchanger tube is equipped in the steam generator, the tower bottom oil of the emptying tower is connected by column bottoms pump
To the heat exchanger tube, the steam generator shell is equipped with medium water inlet and steam (vapor) outlet；
The steam (vapor) outlet is connect with full factory's steam pipe network；
The medium water is deoxygenated water；
Level control is carried out than three choosing, steam flow and feedwater flow parameters using double liquid level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685835.4A CN106433739B (en) | 2016-08-18 | 2016-08-18 | A kind of energy-saving system of delayed coking unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685835.4A CN106433739B (en) | 2016-08-18 | 2016-08-18 | A kind of energy-saving system of delayed coking unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106433739A CN106433739A (en) | 2017-02-22 |
| CN106433739B true CN106433739B (en) | 2019-02-12 |
Family
ID=58181477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610685835.4A Active CN106433739B (en) | 2016-08-18 | 2016-08-18 | A kind of energy-saving system of delayed coking unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106433739B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104419444B (en) * | 2013-09-09 | 2016-06-15 | 中国石化工程建设有限公司 | A kind of method utilizing the moisture sump oil of delayed coking unit freshening |
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2016
- 2016-08-18 CN CN201610685835.4A patent/CN106433739B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106433739A (en) | 2017-02-22 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Energy saving utilization system of delayed coking unit Effective date of registration: 20200729 Granted publication date: 20190212 Pledgee: HUAFENG METEOROLOGICAL MEDIA GROUP Co.,Ltd. Pledgor: BEIJING HUAFU ENGINEERING Co.,Ltd. Registration number: Y2020990000844 |
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