CN109536204A - Low Temperature Thermal upgrading utilizes catalytic cracking unit - Google Patents
Low Temperature Thermal upgrading utilizes catalytic cracking unit Download PDFInfo
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- CN109536204A CN109536204A CN201811556615.7A CN201811556615A CN109536204A CN 109536204 A CN109536204 A CN 109536204A CN 201811556615 A CN201811556615 A CN 201811556615A CN 109536204 A CN109536204 A CN 109536204A
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- oil
- diesel oil
- diesel
- heat exchanger
- reboiler
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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
- C10G55/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process
- C10G55/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only
- C10G55/06—Treatment of hydrocarbon oils, in the absence of hydrogen, by at least one refining process and at least one cracking process plural serial stages only including at least one catalytic cracking step
-
- 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
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/04—Diesel oil
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (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)
Abstract
The present invention relates to a kind of upgradings of Low Temperature Thermal to utilize catalytic cracking unit, including fractionating column, diesel oil stripper, desorber, oil circulation pipe in one, reactor feedstocks oil preheats service and diesel oil output channel, diesel oil stripper is connect with fractionating column by pipeline and receives diesel oil and slipped point, oil circulation pipe starting point and reflux end are connect with fractionating column in one, it desorbs tower bottom and is equipped with diesel oil reboiler, the diesel oil discharge port of diesel oil stripper connect with diesel oil reboiler by diesel oil output channel and continues to convey after diesel oil heat supply, reactor feedstocks oil preheats service and is equipped with oil-raw material oil heat exchanger in one, oil circulation pipe is back to fractionating column after oil in oil in one-raw material oil heat exchanger and one completes heat exchange with feedstock oil in one.The present invention can sufficiently recycle fractionation unit waste heat and use for desorber tower bottom heat and fractionation unit fuel oil preheating heat, improve energy transformation ratio, and more energy-efficient benefit advantageously reduces cost.
Description
Technical field
The invention belongs to the technical fields of catalytic cracking unit, utilize catalytic cracking more particularly to a kind of upgrading of Low Temperature Thermal
Device.
Background technique
Catalytic cracking unit abbreviation catalytic unit is a kind of device that mink cell focus is processed as to light oil of petrochemical industry.
The device is by anti-unit, fractionation unit and Vapor recovery unit unit form again.
The heat exchange process of the device relates generally to feedstock oil, diesel oil, oil and slurry oil in one.Anti- the charging of unit is raw material again
Oil, feedstock oil need the waste heat in fractionation unit recycling fractionation unit and are heated to 200-240 DEG C to be reacted into reactor.
The main equipment of fractionation unit is fractionating column, and it is that oil is recycled back in one below diesel oil draw out plate that diesel oil is extracted at the middle part of fractionating column, which out,
Stream.About 200 DEG C of diesel oil draw out temperature, heat exchange process is usually to exchange heat first with feedstock oil, then reabsorb oil heat exchange with richness, so
It exchanges heat afterwards with heat medium water.The heat exchange process of oily circulating reflux is usually and exchanges heat first with fcc raw material oil in one, is re-used as desorbing
The heat source of tower finally returns to fractionating column with after heat medium water or cooler heat exchange.Heating agent is arranged in oily circulating reflux heat exchange process in one
The purpose of water- to-water heat exchanger is to need to control diesel quality by the thermic load of adjusting heat exchanger.It recycles slurry service and is located at separation
Tower bottom is to extract slurry oil out from fractionation column bottom, general first to exchange heat with feedstock oil, after steam occurs subsequently into steam generator
Return to fractionating column.
Catalytic cracking unit existing main problem in terms of energy conservation includes: first, Low Temperature Thermal overstock problem, due to oil refining
The Low Temperature Thermal of factory is superfluous, and oil is unable to get effective use using the waste heat that heat medium water takes out in diesel oil and one, needs using circulation
Water or other cooling facilities cool down heat medium water；Second, desorber tower bottom shortage of heat, needs to use steam as heat
Source；Third, the preheating of feedstock oil needs to consume the heat of slurry oil, reduce the yield of circulation slurry oil System steam.
The technology path of traditional low-grade utility is started with from end, carries out heating or power generation using the waste heat of heat medium water
Etc. purposes, there is a problem of capacity usage ratio it is low, investment it is big, of poor benefits.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of upgradings of Low Temperature Thermal to utilize catalytic cracking unit, sufficiently recycles
Using fractionation unit waste heat to provide the supply of desorber tower bottom heat and fractionation unit fuel oil preheating heat of Vapor recovery unit unit
Amount supply, improves energy transformation ratio, and more energy-efficient benefit reduces cost.
The technical solution adopted by the present invention to solve the technical problems is to provide a kind of upgrading of Low Temperature Thermal and utilizes catalytic cracking
Device, including fractionating column, diesel oil stripper, desorber, oil circulation pipe, reactor feedstocks oil preheating service and bavin in one
Oily output channel, the diesel oil stripper are connect with fractionating column by pipeline and receive diesel oil and slipped point, oil circulating pipe in described one
The starting point and reflux end in road are connect with fractionating column, and the bottom of the desorber is equipped with diesel oil reboiler, the diesel oil vapour
The diesel oil discharge port of stripper is connect and after diesel oil heat supply by diesel oil output channel with diesel oil reboiler by diesel oil output channel
Continue to convey, the reactor feedstocks oil preheating service is equipped with oil-raw material oil heat exchanger in one, oil circulation in described one
Pipeline is back to fractionating column after oil in oil in one-raw material oil heat exchanger and one completes heat exchange with feedstock oil.
Diesel oil output channel between the diesel oil stripper and diesel oil reboiler is equipped with diesel pump.
The diesel oil output channel is successively inhaled by diesel oil-raw material oil heat exchanger, diesel oil-richness again after diesel oil reboiler
It is exported after receiving oil heat exchanger, diesel oil-hot water heat exchanger and air cooler.
The bottom of the desorber is additionally provided in one oily reboiler, and the circulation loop of oil circulation pipe successively passes through in described one
Cross in one oil-raw material oil heat exchanger in oily reboiler and one.
The catalytic cracking unit further includes stabilizer, and the stable tower bottom, which is equipped with, stablizes tower bottom reboiler, in described one
The circulation loop of oil circulation pipe successively oil-raw material oil heat exchanger in oily reboiler and one by stablizing tower bottom reboiler, in one.
Reactor feedstocks oil preheating service successively passes through that diesel oil-raw material oil heat exchanger, oil-feedstock oil changes in one
Hot device and slurry oil-raw material oil heat exchanger preheat feedstock oil.
The bottom of the fractionating column is equipped with circulation slurry oil conveyance conduit, and the circulation slurry oil conveyance conduit successively passes through oil
It is exported after slurry-raw material oil heat exchanger, steam generator and slurry oil cooler, between the steam generator and slurry oil cooler
Circulation slurry oil conveyance conduit is equipped with the return line connecting with fractionating column.
The bottom of the desorber is additionally provided with Steam reboiler.
Beneficial effect
First, the present invention can more efficiently be recycled waste heat oily in the diesel oil of fractionation unit and one,
The output for reducing Low Temperature Thermal, the Low Temperature Thermal surplus for advantageously accounting for or alleviating apparatus system need to consume cooler arrangement
Problem improves energy transformation ratio, reduces equipment cost.
Second, the present invention carries out heat supply to desorber bottom diesel oil reboiler by fractionating diesel, on the one hand improves more than diesel oil
On the other hand thermal transition advantageously reduces dependence of the desorber bottom Steam reboiler to steam, reduce steam consumption, more supernumerary segment
Can, advantageously reduce production cost.
Third, the present invention increase oil-raw material oil heat exchanger in one before slurry oil-raw material oil heat exchanger, are recycled using fractionation
One in oil feedstock oil is heated, on the one hand improve oily waste heat conversion in one, on the other hand advantageously reduce circulation slurry oil
Heat consumption, be conducive to improve steam generator in steam production.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Fig. 2 is the structural schematic diagram of the embodiment of the present invention 2.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
Process before transformation: diesel oil (210 DEG C, 50t/h) enters diesel oil stripper 2 from the extraction of fractionating column 1, subsequently into changing
Thermal flow process.Diesel oil first passes through diesel oil-raw material oil heat exchanger 4, then reabsorbs oil heat exchanger 5, diesel oil-heat medium water through diesel oil-richness
Heat exchanger 6 finally enters air cooler 7 and is cooled to 50 DEG C.Oily (320t/h, 290 DEG C) is extracted out from fractionating column 1 in one, temperature 290
DEG C, stablized tower bottom reboiler 11 first, subsequently into reboiler 10 oily in desorber bottom one, finally and after heat medium water heat exchange
230 DEG C of return fractionating columns.For feedstock oil into 90 DEG C of unit temp, flow 170t/h first passes through diesel oil-raw material oil heat exchanger 4, then
It exchanges heat after slurry oil-raw material oil heat exchanger 13 and enters riser reactor to 220 DEG C.The heat exchange process of slurry oil is from fractionating column
1 bottom flows out through circulation slurry oil conveyance conduit 21 and initially enters slurry oil-raw material oil heat exchanger 13 again through steam generator 14, then
Divide two-way, return to fractionating column 1 all the way, another way exports after slurry oil cooler 15 is cooling.
Improved process: diesel oil enters diesel oil stripper 2 from the extraction of fractionating column 1, by diesel oil output channel 20 through bavin
Oil pump 3 pumps, and diesel oil (210 DEG C, 50t/h) is first passed through to newly-increased desorber bottom diesel oil reboiler 8, using diesel oil-raw material
Then oil heat exchanger 4 reabsorbs oil heat exchanger 5, diesel oil-heating agent water- to-water heat exchanger 6 through diesel oil-richness, it is cooling to finally enter air cooler 7
To 50 DEG C.Circulating reflux oil (320t/h, 290 DEG C) is extracted out from fractionating column 1 in one, and temperature is 290 DEG C, passes through oil circulating pipe in one
Tower bottom reboiler 11 is stablized in road 18 first, subsequently into reboiler 10 oily in desorber bottom one, finally passes through oil-raw material in one
Oil heat exchanger 12 and feedstock oil return to fractionating column 1 after having changed heat.Feedstock oil is into 90 DEG C of unit temp, flow 170t/h, by anti-
It answers device fuel oil preheating service 19 to first pass through diesel oil-raw material oil heat exchanger 4, then passes through oil-raw material oil heat exchanger in one
12, it finally exchanges heat by slurry oil-raw material oil heat exchanger 13 and enters riser reactor to 220 DEG C.
Reforming content has two: first is that increasing a diesel oil reboiler 8 newly at 16 bottom of desorber, diesel oil being drawn from diesel pump 3
The diesel oil reboiler 8 increased newly to 16 bottom of desorber is used as heat source.Second is that oil in one-heating agent water- to-water heat exchanger to be changed in one and recycle
Oil-raw material oil heat exchanger 12.
Correctional effect: 1) using diesel oil as desorber 16 bottom heat source heat removal after, the heat of diesel oil-hot water heat exchanger 6
Load will be reduced, and be equivalent to the steam that the heat of Low Temperature Thermal is carried out to upgrading substitution desorber bottom, have the work for saving steam
With.2) it transform oil-hot water heat exchanger in one as oil in one-raw material oil heat exchanger 12, heat oily in one is transferred to raw material
In oil, reduce slurry oil-raw material oil heat exchanger 13 thermic load, this part heat load of reduction is eventually transferred into steam generator
In 14, be conducive to improve steam production.Since full factory's Low Temperature Thermal is superfluous before transformation, the heat that oil-heat medium water is changed to from one
Amount and the heat changed to of diesel oil-heat medium water require consumption recirculated water 300t/h, desorber Steam reboiler need using
1.0MPa steam 5t/h；The cooling recirculated water 240t/h used of superfluous Low Temperature Thermal is reduced after transformation, reduces desorption tower bottom steam
3t/h, steam generator mostly occur steam 1t/h, and recirculated water price presses 150 yuan/t, Nian Yunhang according to 0.2 yuan/t, steam price
Time according to 8400 hours, 5,440,000 yuan/year of benefit.
Embodiment 2
Process before transformation: diesel oil (210 DEG C, 50t/h) enters diesel oil stripper 2 from the extraction of fractionating column 1, subsequently into changing
Thermal flow process.Diesel oil first passes through diesel oil-raw material oil heat exchanger 4, then reabsorbs oil heat exchanger 5, diesel oil-heat medium water through diesel oil-richness
Heat exchanger 6 finally enters air cooler 7 and is cooled to 50 DEG C.Circulating reflux oily (320t/h, 290 DEG C) is taken out from fractionating column 1 in fractionation one
Out, first through reboiler 10 oily in desorber bottom one, 230 DEG C of return fractionating columns after then exchanging heat with heat medium water.Stabilizer bottom is again
The heat for boiling device 11 passes through circulating reflux oil supply in two.Full factory Low Temperature Thermal is superfluous, needs to be cooled with circulating water device for surplus
Low Temperature Thermal is cooling.Into 90 DEG C of unit temp, flow 170t/h first passes through diesel oil-raw material oil heat exchanger 4, then passes through feedstock oil
It exchanges heat after slurry oil-raw material oil heat exchanger 13 and enters riser reactor to 220 DEG C.The heat exchange process of slurry oil is from 1 bottom of fractionating column
Slurry oil-raw material oil heat exchanger 13 is initially entered again through steam generator 14, is then divided two-way, is returned to fractionating column, another way all the way
Go out device after slurry oil cooler 15 is cooling.
Improved process: diesel oil from fractionating column 1 extraction enter diesel oil stripper 2, through diesel pump 3 by diesel oil (210 DEG C,
Newly-increased desorber bottom diesel oil reboiler 8 50t/h) is first passed through, using diesel oil-raw material oil heat exchanger 4, then through diesel oil-richness
Oil heat exchanger 5, diesel oil-heating agent water- to-water heat exchanger 6 are reabsorbed, air cooler 7 is finally entered and is cooled to 50 DEG C.Circulating reflux oil in one
(320t/h, 290 DEG C) is extracted out from fractionating column 1, first through reboiler 10 oily in desorber bottom one, after then having changed heat with feedstock oil
Return to fractionating column.The heat for stablizing tower bottom reboiler 11 passes through circulating reflux oil supply in two.Full factory Low Temperature Thermal is superfluous, needs to use
Water recirculator is cooling by superfluous Low Temperature Thermal.For feedstock oil into 90 DEG C of unit temp, flow 170t/h first passes through diesel oil-original
Expect oil heat exchanger 4, then pass through oil-raw material oil heat exchanger 12 in one, finally extremely by slurry oil-heat exchange of raw material oil heat exchanger 13
220 DEG C enter riser reactor.
Reforming content has two: first is that increasing a diesel oil reboiler 8 newly at 16 bottom of desorber, diesel oil being drawn from diesel pump 3
The diesel oil reboiler 8 increased newly to 16 bottom of desorber is used as heat source.Second is that oil in one-heating agent water- to-water heat exchanger to be changed in one and recycle
Oil-raw material oil heat exchanger 12.
After transformation, the cooling recirculated water 240t/h used of superfluous Low Temperature Thermal is reduced, oil slurry steam generator is recycled
3.5MPa steam production is improved by the 22t/h before optimizing to 26t/h, saves steam 4t/h, recirculated water price according to 0.2 yuan/t,
Steam price presses 150 yuan/t, year runing time according to 8400 hours, 5,440,000 yuan/year of benefit.
Claims (8)
1. a kind of upgrading of Low Temperature Thermal utilizes catalytic cracking unit, including fractionating column (1), diesel oil stripper (2), desorber (16),
Oil circulation pipe (18), reactor feedstocks oil preheating service (19) and diesel oil output channel (20), the diesel oil vapour in one
Stripper (2) is connect with fractionating column (1) by pipeline and receives diesel oil and slipped point, in described one the starting point of oil circulation pipe (18) with
Reflux end is connect with fractionating column (1), it is characterised in that: the bottom of the desorber (16) is equipped with diesel oil reboiler (8), institute
The diesel oil discharge port for stating diesel oil stripper (2) is connect by diesel oil output channel (20) with diesel oil reboiler (8) and diesel oil heat supply
Continue to convey by diesel oil output channel (20) afterwards, reactor feedstocks oil preheating service (19) is equipped with oil-in one
Raw material oil heat exchanger (12), in described one oil circulation pipe (18) by oil in oil-raw material oil heat exchanger (12) and one in one with
Feedstock oil is back to fractionating column (1) after completing heat exchange.
2. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the diesel oil vapour
Diesel oil output channel (20) between stripper (2) and diesel oil reboiler (8) is equipped with diesel pump (3).
3. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the diesel oil is defeated
Pipeline (20) successively reabsorbs oil heat exchange by diesel oil-raw material oil heat exchanger (4), diesel oil-richness after diesel oil reboiler (8) out
Device (5), diesel oil-hot water heat exchanger (6) and air cooler (7) export afterwards.
4. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the desorber
(16) bottom is additionally provided in one oily reboiler (10), and the circulation loop of oil circulation pipe (18) successively passes through in one in described one
Oil-raw material oil heat exchanger (12) in oily reboiler (10) and one.
5. a kind of Low Temperature Thermal upgrading according to claim 4 utilizes catalytic cracking unit, it is characterised in that: the catalytic cracking
Device further includes stabilizer (17), and stabilizer (17) bottom, which is equipped with, stablizes tower bottom reboiler (11), oil circulation in described one
The circulation loop of pipeline (18) successively oil-feedstock oil in oily reboiler (10) and one by stablizing tower bottom reboiler (11), in one
Heat exchanger (12).
6. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the reactor
Fuel oil preheating service (19) successively by diesel oil-raw material oil heat exchanger (4), in one oil-raw material oil heat exchanger (12) and
Slurry oil-raw material oil heat exchanger (13) preheats feedstock oil.
7. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the fractionating column
(1) bottom is equipped with circulation slurry oil conveyance conduit (21), and the circulation slurry oil conveyance conduit (21) successively passes through slurry oil-feedstock oil
Heat exchanger (13), steam generator (14) and slurry oil cooler (15) export afterwards, and the steam generator (14) and slurry oil are cooling
Circulation slurry oil conveyance conduit (21) between device (15) is equipped with the return line connecting with fractionating column (1).
8. a kind of Low Temperature Thermal upgrading according to claim 1 utilizes catalytic cracking unit, it is characterised in that: the desorber
(16) bottom is additionally provided with Steam reboiler (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556615.7A CN109536204B (en) | 2018-12-19 | 2018-12-19 | Catalytic cracker for low-temp. heat upgrading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811556615.7A CN109536204B (en) | 2018-12-19 | 2018-12-19 | Catalytic cracker for low-temp. heat upgrading |
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| Publication Number | Publication Date |
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| CN109536204A true CN109536204A (en) | 2019-03-29 |
| CN109536204B CN109536204B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811556615.7A Active CN109536204B (en) | 2018-12-19 | 2018-12-19 | Catalytic cracker for low-temp. heat upgrading |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876193A (en) * | 2020-07-29 | 2020-11-03 | 宁波科元精化有限公司 | Processing method for reducing energy consumption of catalytic device |
| CN112442389A (en) * | 2019-09-04 | 2021-03-05 | 中国石油天然气股份有限公司 | Wax oil hydrocracking device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418235A (en) * | 2007-10-25 | 2009-04-29 | 中国石油化工股份有限公司 | Catalytic cracking oil and gas separation method |
| CN203095986U (en) * | 2013-03-26 | 2013-07-31 | 大庆中蓝石化有限公司 | Oil slurry heat reutilization system of catalytic fractionating tower |
| CN105623722A (en) * | 2016-01-21 | 2016-06-01 | 上海优华系统集成技术股份有限公司 | Catalytic cracker primary midsection oil heat utilization system and heat utilization method |
| CN209602463U (en) * | 2018-12-19 | 2019-11-08 | 上海慧得节能科技有限公司 | Low Temperature Thermal upgrading utilizes catalytic cracking unit |
-
2018
- 2018-12-19 CN CN201811556615.7A patent/CN109536204B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418235A (en) * | 2007-10-25 | 2009-04-29 | 中国石油化工股份有限公司 | Catalytic cracking oil and gas separation method |
| CN203095986U (en) * | 2013-03-26 | 2013-07-31 | 大庆中蓝石化有限公司 | Oil slurry heat reutilization system of catalytic fractionating tower |
| CN105623722A (en) * | 2016-01-21 | 2016-06-01 | 上海优华系统集成技术股份有限公司 | Catalytic cracker primary midsection oil heat utilization system and heat utilization method |
| CN209602463U (en) * | 2018-12-19 | 2019-11-08 | 上海慧得节能科技有限公司 | Low Temperature Thermal upgrading utilizes catalytic cracking unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112442389A (en) * | 2019-09-04 | 2021-03-05 | 中国石油天然气股份有限公司 | Wax oil hydrocracking device |
| CN112442389B (en) * | 2019-09-04 | 2022-10-04 | 中国石油天然气股份有限公司 | Wax oil hydrocracking device |
| CN111876193A (en) * | 2020-07-29 | 2020-11-03 | 宁波科元精化有限公司 | Processing method for reducing energy consumption of catalytic device |
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| Publication number | Publication date |
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| CN109536204B (en) | 2023-09-19 |
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