CN203382718U - Delayed coking process test device - Google Patents
Delayed coking process test device Download PDFInfo
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- CN203382718U CN203382718U CN201320283344.9U CN201320283344U CN203382718U CN 203382718 U CN203382718 U CN 203382718U CN 201320283344 U CN201320283344 U CN 201320283344U CN 203382718 U CN203382718 U CN 203382718U
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Abstract
The utility model discloses a delayed coking process test device. The delayed coking process test device comprises a feeding system, a steam injecting system, a heating system, a reacting system, a fractionating system, an oil gas recovering system and a gas distributing pipeline and is characterized by further comprising a coked heavy wax oil circulating system, wherein the inlet of the coked heavy wax oil circulating system is connected with the fractionating system, and the outlet of the coked heavy wax oil circulating system is connected with the feeding system. The delayed coking process test device disclosed by the utility model has the advantages that the test on one operating condition (circulation ratio, furnace outlet temperature, coke tower top pressure, water injection volume and the like) can be completed in one test, and only 3-5 days are required, so that the efficiency is increased by over ten times.
Description
Technical field
The utility model relates to a kind of delayed coking unit, particularly a kind of delayed coking testing apparatus.
Background technology
Therefore delay coking process because de-charcoal is thorough, flow process is simple, technology maturation, plant investment one of important process of heavy oil upgrading that become such as lower, but the heaviness along with crude oil, the character of heavy oil worse and worse, this has brought challenge to delay coking process processing inferior heavy oil, be mainly manifested in: furnace tubing coking aggravation, the cycle of operation shortens; Low value-added gas and coke yield are higher, and the liquid receipts are lower; Easily generate shot coke, thereby cause the vibrations of coke drum, to safety in production, bring hidden danger.Therefore existing delay coking process being improved or develop new inferior heavy oil processing technology is the urgent task that the oil refining worker faces.
Want development delay coking novel process, new technology, will on the delayed coking simulation test device, carry out technological test, but existing delayed coking simulation test device is not with separation column, only can carry out single-pass operation, complete a recycle ratio condition test and need to carry out repeatedly the one way test, so efficiency is lower.In order to improve test efficiency, the refining of petroleum investigator improves the delayed coking simulation test device.
Chinese patent CN00233371.6 and CN200420010712.3 all disclose the coke drum that a kind of delayed coking testing apparatus is convenient to decoking, time saving and energy saving while adopting this two kinds of method decokings, and have reduced dust pollution, have improved Working environment.
Chinese patent CN200420010660.X discloses a kind of holding furnace for the small test device reactor, adopts this technology, can fast cooling after can making the coke drum charging finish, shortened the test period.
The coke drum of above-mentioned patent and holding furnace thereof are only one of them equipment of device, do not relate to coking and generate the ON-LINE SEPARATION of oil gas and online circulation and the required equipment thereof of turning oil, therefore, although adopt this kind equipment to improve test efficiency, test efficiency is still very low on the whole.
The utility model content
In order to overcome the shortcomings such as the low and labour intensity of existing delayed coking testing apparatus test efficiency is large, the utility model provides a kind of testing apparatus of delay coking process, can in 1 test, complete 1 operational condition (recycle ratio, heater outlet temperature, top of coke tower pressure, water injection rate etc.) test, only need 3～5 days, efficiency improves more than 10 times.
The utility model is achieved through the following technical solutions: a kind of testing apparatus of delay coking process comprises feed system, steam injection system, heating system, reactive system, fractionating system, gas recovery system for oil and gas distribution pipeline; The entrance of described heating system is connected with the outlet line of feed system and steam injection system respectively; The outlet of heating system is connected with reactive system; Fractionating system is connected with gas recovery system for oil with the reactive system outlet line respectively; It is characterized in that: also comprise the recycle system of coking wax slop, its entrance is connected with fractionating system, and outlet is connected with feed system.
The testing apparatus of a kind of delay coking process of the utility model, described feed system comprises head tank and feedstock pump, by pipeline, connects.Described feedstock pump includes but not limited to toothed gear pump, ram pump, preferably toothed gear pump.Described feed system also comprises metering outfit, can be measured the raw material input.
The testing apparatus of a kind of delay coking process of the utility model, described steam injection system comprises water pot, waterflood pump and metering outfit and steam injection process furnace.Waterflood pump includes but not limited to ram pump, surge pump, preferably the precision plunger pump.
The testing apparatus of a kind of delay coking process of the utility model, described heating system comprises heavy oil heater and coke drum holding furnace etc.Wherein heavy oil heater adopts upper entering and lower leaving and in the mode of eddy flow, heavy oil is heated, and while carrying out the research and development of needle coke production technology, heavy oil heater also can carry out the operation of multistage alternating temperature; The coke drum holding furnace includes but not limited to as open-close type, adopts open-close type (process furnace is comprised of two fans, and one side is fixed for hinge, and the other side is fixed with hasp).
The testing apparatus of a kind of delay coking process of the utility model, described reactive system comprises the pressure controlled valve of coke drum and coke drum.The feeding manner of coke drum adopt bottom in and top out or enterprising on go out two kinds of forms.
The testing apparatus of a kind of delay coking process of the utility model, described fractionating system comprises charging process furnace, stripping apparatus for feeding and separation column.Wherein the charging process furnace adopts upper entering and lower leaving and in the mode of eddy flow, charging is heated; The stripping apparatus for feeding comprises water pot, waterflood pump and metering outfit and separation column stripping process furnace; Separation column mainly contains the compositions such as stripping stage, rectifying section and tower head internal reflux device.The number of theoretical plate of stripping stage is 2～5, and the number of theoretical plate of rectifying section is 5～10; The reflux ratio of tower head is 1: 1～5.The cut point of its separation column is 200 ℃～500 ℃; Preferably 350 ℃～485 ℃.
The testing apparatus of a kind of delay coking process of the utility model, described gas recovery system for oil comprises from the cooling condensation equipment of fractionation tower top coking oil gas and oil, gas recovery and metering outfit.
The testing apparatus of a kind of delay coking process of the utility model, the recycle system of described coking wax slop comprises heavy oil receiving tank and circulating oil pump.Circulating oil pump is generally toothed gear pump, and a counter with pulse signal is installed on the axle of toothed gear pump, in the process of normal test, and the amount of by the revolution to toothed gear pump, measuring to convert turning oil.Heavy oil from Fractionator Bottom can directly be extracted out and be mixed with fresh feed by circulating oil pump; Also can first by level control valve, be put into the heavy oil receiving tank, and then extract a part out by circulating oil pump and mix with fresh feed.
The testing apparatus of a kind of delay coking process of the utility model, described gas distribution pipeline gas is air, nitrogen or oxygen, nitrogen.After off-test, enter in certain proportion heavy oil heater, separation column charging process furnace and stripping process furnace from the air of gas distribution pipeline and nitrogen heavy oil furnace tubing, separation column and charging process furnace are burnt to processing, can normally carry out in order to next test.
A kind of testing apparatus of delay coking process, feed system is connected with the process furnace entrance of heating system by the outlet line of feedstock pump; Steam injection system is connected with the process furnace entrance of heating system by the outlet line of steam injection process furnace; The heavy oil heater of heating system, its outlet is connected with the coke drum bottom of reactive system; Reactive system is coke drum; Fractionating system is connected with the oil gas vent pipeline of coke drum by separation column charging process furnace, overhead oil gas pipeline by separation column is connected with the cooler condenser of gas recovery system for oil, by heavy oil pipeline at the bottom of the tower of separation column, with the heavy oil receiving tank, with circulating oil pump, is connected respectively; The circulating oil pump outlet is connected with the feedstock pump outlet; Gas distribution pipeline divides three tunnels, connects respectively steam injection process furnace entrance, separation column charging process furnace entrance and separation column stripping process furnace entrance.It is characterized in that: coking is generated to oil gas carry out continuous distillation in separation column, the heavy oil cut out directly mixes with fresh feed after the circulating oil pump pressurization, realizes the on-line continuous cyclical operation of turning oil.
The inlet amount of described delayed coking testing apparatus is 1～50kg/hr, preferably 2～5kg/hr; The heavy oil heater temperature out is 430～510 ℃; The pressure control range of coke drum is 0.1～1.0MPa; Recycle ratio is 0～2 (or the combined cycle ratio is 1～3).
Compare with existing delayed coking testing apparatus, the utlity model has following beneficial effect:
1. the turning oil from Fractionator Bottom directly mixes with fresh feed, simulated the operation of delayed coking full scale plant fully, can make an experiment of process conditions number of times be improved to 1 time by the former test of one way more than 4 times has tested, or the working hour shortened to 5 days by former about 2 months and complete with interior, working efficiency significantly improves;
2. utilize delayed coking testing apparatus of the present utility model, can not only carry out various delayed coking tests; And can carry out the exploitation of needle coke production technology; Also can carry out the distillation test of stock oil, for other test provides test raw material; If the configuration miscellaneous equipment, also can be improved liquid and receive auxiliary agent, prevent the evaluation test of the auxiliary agents such as tube coking auxiliary agent etc.
The accompanying drawing explanation
Fig. 1 is the testing apparatus schematic diagram of a kind of delay coking process of the present utility model.
Reference numeral shown in figure is: 1-head tank, 2-feedstock pump, 3-water pot, 4-water pump, 5-distribution gas, 6-steam injection process furnace, 7-heavy oil heater, 8-coke drum, 9-distribution gas, 10-distribution gas, 11-water pump, the 12-water pot, 13-separation column stripping process furnace, 14-separation column charging process furnace, the 15-circulating oil pump, 16-heavy oil, 17-separation column, 18-heavy oil receiving tank, 19-cooler condenser, 20-oil gas.
Embodiment
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing, but these embodiment do not limit the utility model.
Figure 1 shows that a kind of simulation test device of delay coking process.Extract 7 heating of duplicate removal oil process furnace from the stock oil in head tank 1 out by feedstock pump 2; Go 6 heating of steam injection process furnace from the water in water pot 3 after water pump 4 pressurization, mix with stock oil after being heated into water vapor; And also with stock oil, mix after circulating oil pump 15 pressurizations from the heavy oil 16 at the bottom of separation column 17 towers.Above-mentioned three strands of materials enter coke drum 8 and carry out pyrogenic reaction after heavy oil heater 7 is heated to certain temperature, control the pressure of top of coke tower.The high-temperature oil gas that goes out coke drum 8 enters separation column 17 and is distilled after 14 concurrent heatings of separation column charging process furnace, inject high temperature water stripping steam in the bottom of separation column simultaneously, go 13 heating of separation column stripping process furnace from the water in water pot 12 after water pump 11 pressurizations, then enter separation column 17.Coking oil gas from separation column 17 tower tops goes to reclaim, measure through the cooled oil gas 20 of cooler condenser 19 (gas, gasoline and diesel oil distillate, wax tailings and water); And at the bottom of tower, heavy oil (being turning oil or the wax tailings of weighing) 16 goes to mix with the stock oil of feedstock pump 2 outlets after circulating oil pump 15 pressurizations.
Above-mentioned is the equipment connection method of conventional delayed coking testing apparatus, when carrying out flexible adjustable delay coking process test, first be discharged in heavy oil receiving tank 18 by level control valve from heavy oil at the bottom of the tower of separation column 17, then by circulating oil pump 15 extraction units, divide and circulated.
When carrying out the distillation test of crude oil, entering separation column 17 after going separation column charging process furnace 14 to heat from the stock oil in head tank 1 by feedstock pump 2 extractions is distilled, inject high temperature water stripping steam in the bottom of separation column simultaneously, go 13 heating of separation column stripping process furnace from the water in water pot 12 after water pump 11 pressurizations, then enter separation column 17.Oil gas from separation column 17 tower tops goes downstream recovery, metering through the cooled oil gas 20 of cooler condenser 19; And be discharged in heavy oil receiving tank 18 by level control valve from the heavy oil 16 at the bottom of separation column 17 towers.
Claims (8)
1. the testing apparatus of a delay coking process, comprise feed system, steam injection system, heating system, reactive system, fractionating system, gas recovery system for oil and gas distribution pipeline; The entrance of described heating system is connected with the outlet line of feed system and steam injection system respectively; The outlet of heating system is connected with reactive system; Fractionating system is connected with gas recovery system for oil with the reactive system outlet line respectively; It is characterized in that: also comprise the recycle system of coking wax slop, its entrance is connected with fractionating system, and outlet is connected with feed system.
2. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: described feed system comprises head tank and feedstock pump, by pipeline, connects.
3. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: described steam injection system comprises water pot, waterflood pump and metering outfit and steam injection process furnace.
4. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: described heating system comprises heavy oil heater and coke drum holding furnace.
5. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: described reactive system comprises the pressure controlled valve of coke drum and coke drum.
6. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: described fractionating system comprises charging process furnace, stripping apparatus for feeding and separation column.
7. the testing apparatus of a kind of delay coking process according to claim 1 is characterized in that: described gas recovery system for oil comprises from the cooling condensation equipment of fractionation tower top coking oil gas and oil, gas and reclaiming and metering outfit.
8. the testing apparatus of a kind of delay coking process according to claim 1, it is characterized in that: the recycle system of described coking wax slop comprises heavy oil receiving tank and circulating oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320283344.9U CN203382718U (en) | 2013-05-15 | 2013-05-15 | Delayed coking process test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320283344.9U CN203382718U (en) | 2013-05-15 | 2013-05-15 | Delayed coking process test device |
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| CN203382718U true CN203382718U (en) | 2014-01-08 |
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| CN201320283344.9U Expired - Lifetime CN203382718U (en) | 2013-05-15 | 2013-05-15 | Delayed coking process test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194826A (en) * | 2014-07-31 | 2014-12-10 | 天津市瑞德赛恩新材料开发有限公司 | Technique for reducing dry gas yield in delayed coking reaction |
| WO2019183379A1 (en) * | 2018-03-21 | 2019-09-26 | Honeywell International Inc. | Fog computing for raising delayed coker yields |
-
2013
- 2013-05-15 CN CN201320283344.9U patent/CN203382718U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104194826A (en) * | 2014-07-31 | 2014-12-10 | 天津市瑞德赛恩新材料开发有限公司 | Technique for reducing dry gas yield in delayed coking reaction |
| CN104194826B (en) * | 2014-07-31 | 2015-11-25 | 天津市瑞德赛恩新材料开发有限公司 | A kind of processing method reducing delayed coking reaction dry gas yied |
| WO2019183379A1 (en) * | 2018-03-21 | 2019-09-26 | Honeywell International Inc. | Fog computing for raising delayed coker yields |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |