CN206751742U - A kind of heavy oil catalytic pyrolysis, which is stopped work, replaces device for recovering oil and gas - Google Patents
A kind of heavy oil catalytic pyrolysis, which is stopped work, replaces device for recovering oil and gas Download PDFInfo
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- CN206751742U CN206751742U CN201720628752.1U CN201720628752U CN206751742U CN 206751742 U CN206751742 U CN 206751742U CN 201720628752 U CN201720628752 U CN 201720628752U CN 206751742 U CN206751742 U CN 206751742U
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Abstract
The utility model provides a kind of heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas, including：The auxiliary combustion chamber being connected with the displacement oil gas vent of heavy oil catalytic pyrolysis system；The transportation pipeline that displacement oil gas pipeline between heavy oil catalytic pyrolysis system and auxiliary combustion chamber is connected, is provided with the first valve；The ethylbenzene richness propylene transfer pipeline being connected with the transportation pipeline, is provided with the second valve；The reformation sour gas transfer pipeline being connected with the transportation pipeline, is provided with the 3rd valve；First gas outlet of the transportation pipeline is connected with coking press.The oil gas cemented out is passed through transportation pipeline by the utility model, it is delivered to coking press together with ethylbenzene richness propylene and reformation sour gas simultaneously and is reclaimed, is not only simple in structure, without transforming existing equipment, and the torch that need not set fire, the recycling of gaseous substance can be realized.
Description
Technical field
Technical field of petrochemical industry is the utility model is related to, more particularly to a kind of heavy oil catalytic pyrolysis is stopped work and replaces oil gas time
Receiving apparatus.
Background technology
As the worsening shortages of world petroleum resource and the aggravation of crude oil heaviness, heavy oil are total in global resource because of it
Measure huge, it will play an increasingly important role.Mink cell focus comparision contents are high in the crude oil in China, generally 60%~
80%, some is even as high as 80%~100%.In recent years, the exploitation rate of heavy crude is accelerated, and its yield has accounted for national oil
/ 10th or so of annual production, how by these growing heavy oil lightings, turn into the great class of petroleum refining industry of China
Topic.
Heavy oil catalytic pyrolysis technology is to contact heavy oil with catalyst, is the low-carbon alkenes such as ethene, propylene by heavy oil pyrolysis,
And simultaneously and production light aromatics.During heavy oil catalytic pyrolysis, during system is stopped work, when reaction feed is cut off into riser
After reactor, steam turbine disables, and reaction system opens big quantity of steam and oil gas in system is entered into line replacement as early as possible.Rich gas needs in system
Carry out removing pressure by torch line of setting fire, the pressure release line of systems stabilisation will at this time be opened, and remove pressure to torch line, then light master
Torch burns up the gas phase displaced.Contain very more hydrocarbons, these hydrocarbons in the gas phase largely discharged in system
Matter pressure release to flare system burn-up causes energy waste, while contains substantial amounts of oxysulfide, nitrogen oxygen in the flue gas for generation of burning
Compound causes flue gas not reach increasingly serious environment protection emission requirement, causes the pollution of environment.Therefore, how gas phase emission is reduced
Amount, even discharge reach pollution of the reduction to environment simultaneously of energy recovery purpose, the problem of being urgent need to resolve.
Utility model content
The purpose of this utility model is that providing heavy oil catalytic pyrolysis shut-down replaces device for recovering oil and gas, and the utility model carries
The heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas of confession is simple in construction,, can without transforming existing equipment without torch of setting fire
Realize the recycling of gaseous substance.
The utility model provides a kind of heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas, including：
The auxiliary combustion chamber being connected with the displacement oil gas vent of heavy oil catalytic pyrolysis system；
The transportation pipeline that displacement oil gas pipeline between heavy oil catalytic pyrolysis system and auxiliary combustion chamber is connected,
The first valve is provided with the transportation pipeline；
The ethylbenzene richness propylene transfer pipeline being connected with the transportation pipeline, on the ethylbenzene richness propylene transfer pipeline
It is provided with the second valve；
The reformation sour gas transfer pipeline being connected with the transportation pipeline, it is described to reform on sour gas transfer pipeline
It is provided with the 3rd valve；
First gas outlet of the transportation pipeline is connected with coking press.
In one embodiment, in addition to the displacement oil gas pipeline torch pipe road of setting fire being connected, the torch of setting fire
The 4th valve is provided with pipeline.
In one embodiment, the air inlet of the ethylbenzene richness propylene transfer pipeline is connected with ethylbenzene generating means.
In one embodiment, the air inlet for reforming sour gas transfer pipeline is connected with reformer.
In one embodiment, the second gas outlet of the transportation pipeline is connected by the 5th valve with fractionating column.
In one embodiment, in addition to by punching press valve the decompressor being connected with displacement oil gas pipeline.
In one embodiment, the refining plant being connected by refining valve with replacing oil gas pipeline.
Heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas provided by the utility model includes：With heavy oil catalytic pyrolysis system
The auxiliary combustion chamber that the displacement oil gas vent of system is connected；Displacement oil between heavy oil catalytic pyrolysis system and auxiliary combustion chamber
The transportation pipeline that air pipe is connected, the first valve is provided with the transportation pipeline；With the transportation pipe
The ethylbenzene richness propylene transfer pipeline that road is connected, the second valve is provided with the ethylbenzene richness propylene transfer pipeline；With the oil
The reformation sour gas transfer pipeline that letter shoot road is connected, described reform are provided with the 3rd valve on sour gas transfer pipeline；
First gas outlet of the transportation pipeline is connected with coking press.Heavy oil catalytic pyrolysis is stopped work and displaced by the utility model
The oil gas come is delivered to coking press simultaneously and reclaimed by transportation pipeline together with ethylbenzene richness propylene and reformation sour gas
Recycle, be not only simple in structure, without transforming existing equipment, and the torch that need not set fire, the recycling of gaseous substance can be realized.
Brief description of the drawings
Fig. 1 is the structural representation for the heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas that the utility model embodiment provides
Figure.
Embodiment
In order to further illustrate the utility model, with reference to embodiment to heavy oil catalytic pyrolysis provided by the utility model
Displacement device for recovering oil and gas of stopping work is described in detail, but they can not be interpreted as to the limit to scope of protection of the utility model
It is fixed.
The utility model provides a kind of heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas, including：
The auxiliary combustion chamber being connected with the displacement oil gas vent of heavy oil catalytic pyrolysis system；
The transportation pipeline that displacement oil gas pipeline between heavy oil catalytic pyrolysis system and auxiliary combustion chamber is connected,
The first valve is provided with the transportation pipeline；
The ethylbenzene richness propylene transfer pipeline being connected with the transportation pipeline, on the ethylbenzene richness propylene transfer pipeline
It is provided with the second valve；
The reformation sour gas transfer pipeline being connected with the transportation pipeline, it is described to reform on sour gas transfer pipeline
It is provided with the 3rd valve；
First gas outlet of the transportation pipeline is connected with coking press.
Referring to Fig. 1, Fig. 1 is the heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas that the utility model embodiment provides
Structural representation, wherein, 1 is heavy oil catalytic cracking system, and 2 be auxiliary combustion chamber, and 3 be the He of connection heavy oil catalytic pyrolysis system 1
The displacement oil gas pipeline of auxiliary combustion chamber 2,4 be transportation pipeline, and 5 be the first valve, and 6 be ethylbenzene richness propylene transfer pipeline, 7
For the second valve, 8 is reform sour gas transfer pipeline, and 9 be coking press, and 10 be fractionating column, and 11 be torch pipe road of setting fire, and 12 be the
Four valves, 13 be the 5th valve, and 14 be punching press valve, and 15 be refined valve, and 16 be preboiler valve.
Heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas provided by the utility model includes heavy oil catalytic pyrolysis system
1, auxiliary combustion chamber 2 and the displacement oil gas pipeline 3 of connection heavy oil catalytic pyrolysis system 1 and auxiliary combustion chamber 2.The application be
The recycling of oil gas is realized on original heavy oil catalytic pyrolysis device basic by the setting of pipeline and valve, without to original
Equipment is transformed, i.e. heavy oil catalytic pyrolysis system 1, and auxiliary combustion chamber 2 and displacement oil gas pipeline 3 are existing equipment.
The application is provided with transportation pipeline 4 on displacement oil gas pipeline 3, and first is provided with transportation pipeline 4
Valve 5, the first gas outlet of transportation pipeline 4 are connected with coking press 9.The effect of transportation pipeline 4 is to replace
Displacement oil gas in oil gas pipeline 3 introduces coking press 9 so that the oil gas cemented out is able to recycling.
In the application, on transportation pipeline 4 respectively with ethylbenzene richness propylene transfer pipeline 6 and reform sour gas transfer pipeline
8 are connected so that the oil gas that ethylbenzene richness propylene and reformation sour gas cement out with heavy oil catalytic pyrolysis system together enters Jiao
Change the recycling of press 9.The second valve 7 is provided with ethylbenzene richness propylene transfer pipeline 6, is reformed on sour gas transfer pipeline 8
It is provided with the 3rd valve (not marked in figure).
The air inlet of ethylbenzene richness propylene transfer pipeline 6 is connected with ethylbenzene generating means (not marked in figure), by ethylbenzene
Caused ethylbenzene Rich propylene body introduces transportation pipeline 4 in generating means, is mixed with displacement oil gas and acid gas of reforming.
The air inlet for reforming sour gas transfer pipeline 8 is connected with (being not shown), caused by reformer
Acidity reforms gas and introduces transportation pipeline 4, is mixed with displacement oil gas and ethylbenzene Rich propylene body.
In one embodiment, heavy oil catalytic pyrolysis shut-down displacement device for recovering oil and gas also includes and replaced oil gas pipeline 3
The torch pipe road 11 of setting fire being connected, the 4th valve 12 is provided with the torch pipe road of setting fire.Torch pipe of setting fire road 11 is that system is original
Pipeline, it is also dismountable without being transformed.
In one embodiment, the second gas outlet of transportation pipeline 4 is connected by the 5th valve 13 with fractionating column 10,
When heavy oil catalytic pyrolysis device is not stopped work, by fuel gas, ethylbenzene Rich propylene body and acid pneumatic transmission of reforming to fractionating column 10
The three phase separation tank on top.
In one embodiment, heavy oil catalytic pyrolysis stop work displacement device for recovering oil and gas also include by punching press valve 14 with
The decompressor (being not shown) that displacement oil gas pipeline 3 is connected.
In one embodiment, heavy oil catalytic pyrolysis stop work displacement device for recovering oil and gas also include by refined valve 15 with
The refining plant (being not shown) that displacement oil gas pipeline 3 is connected.
In one embodiment, heavy oil catalytic pyrolysis stops work displacement device for recovering oil and gas also including passing through preboiler valve
16 heat recovery boilers (being not shown) being connected with displacement oil gas pipeline 3.
Decompressor, refining plant, heat recovery boiler are heavy oil catalytic pyrolysis system existing equipment, without entering to it
Row transformation.
In the utility model, for ease of the control of oil gas flow, replace on oil-gas pipeline 3 from heavy oil catalytic cracking system 1
To being disposed with valve 17, valve 18 between the first valve 5, valve 17 be arranged on each device of heavy oil catalytic pyrolysis system it
Between, valve 18 is arranged on the pipeline between refining plant and heat recovery boiler.Pipe-line 4 from the first valve 5 to
Valve 19, valve 20, valve 21, valve 22, valve 23, valve 24 and valve 25 are disposed between coking press 9.
The utility model sets pipe-line 4 on displacement oil-gas pipeline 3, and makes its outlet and the phase of coking press 9
Even, the oil gas cemented out is introduced into coking press 9 and recycled；Meanwhile make ethylbenzene richness propylene pipeline 6 and reform acid
Letter shoot road 8 is connected with pipe-line 4, by ethylbenzene richness propylene and reforms sour gas and the oil gas cemented out together
Into the recycling of coking press 9.
Device operating method provided by the utility model is as follows：
1st, stably remove line ball scene flow three-level to confirm and get through, open on oil gas replacement piping 3 and transportation pipeline 4
Valve, such as valve 17, valve 18, valve 5, valve 19, valve 20, valve 21, valve 22, valve 23, valve 24, valve 25
And valve 7 and the acid valve reformed on letter shoot road, close other valves；
2nd, after oil gas is replaced, the oil gas cemented out is successively by valve 17, valve 18, valve 5, valve 19, valve
Door 20, valve 21, valve 22, valve 23, valve 24, valve 25, with the ethylbenzene ethylene-rich gas by valve 7 and through peracidity weight
The acid gas of reforming of valve on whole letter shoot road enters the progress recycling of coking press together.Pass through in operating process
Manually adjust valve 5, control system removes pressure amount ≯ 500NM3/ times, prevents coking press load fluctuation.Steam turbine is reduced simultaneously to turn
Speed, ensure that steam turbine acting is normal.
3rd, after reaction cut-out charging, oil gas continues through steam turbine and delivers to systems stabilisation, steam turbine with it is counter fly line and turn
Speed controls settler pressure, and systems stabilisation is responsible for adjusting valve 5 by above-mentioned flow special messenger, to rich tail gas of coking plant compressor (i.e.
Coking press) remove pressure.
4th, interior behaviour carries out with coking workshop contacts, and controls the rich gas amount and coking press load for being incorporated to coking, notice at any time
Outer behaviour gradually steps up the rich gas amount of being incorporated to, and control system removes pressure amount ≯ 500NM3/ time, reduction systems stabilisation pressure.
5th, when occur system pressure remove pressure it is unhappy when, notify other workshops to reduce the gas phase load for removing coking press in time,
So that off-stream unit removes pressure.
6th, after system pressure no longer reduces, notice coking workshop system is removed pressure and finished, and outer behaviour closes valve 5.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (8)
- The displacement device for recovering oil and gas 1. a kind of heavy oil catalytic pyrolysis is stopped work, it is characterised in that including：The auxiliary combustion chamber being connected with the displacement oil gas vent of heavy oil catalytic pyrolysis system；The transportation pipeline that displacement oil gas pipeline between heavy oil catalytic pyrolysis system and auxiliary combustion chamber is connected, it is described The first valve is provided with transportation pipeline；The ethylbenzene richness propylene transfer pipeline being connected with the transportation pipeline, set on the ethylbenzene richness propylene transfer pipeline There is the second valve；The reformation sour gas transfer pipeline being connected with the transportation pipeline, described reform are set on sour gas transfer pipeline There is the 3rd valve；First gas outlet of the transportation pipeline is connected with coking press.
- The displacement device for recovering oil and gas 2. heavy oil catalytic pyrolysis according to claim 1 is stopped work, it is characterised in that also include with The torch pipe road of setting fire that is connected of displacement oil gas pipeline, the 4th valve is provided with the torch pipe road of setting fire.
- The displacement device for recovering oil and gas 3. heavy oil catalytic pyrolysis according to claim 2 is stopped work, it is characterised in that the ethylbenzene The air inlet of rich propylene transfer pipeline is connected with ethylbenzene generating means.
- The displacement device for recovering oil and gas 4. heavy oil catalytic pyrolysis according to claim 3 is stopped work, it is characterised in that the reformation The air inlet of sour gas transfer pipeline is connected with reformer.
- The displacement device for recovering oil and gas 5. heavy oil catalytic pyrolysis according to claim 4 is stopped work, it is characterised in that the oil gas Second gas outlet of transfer pipeline is connected by the 5th valve with fractionating column.
- The displacement device for recovering oil and gas 6. heavy oil catalytic pyrolysis according to claim 5 is stopped work, it is characterised in that also include logical The decompressor that overshoot pressure valve is connected with replacing oil gas pipeline.
- The displacement device for recovering oil and gas 7. heavy oil catalytic pyrolysis according to claim 5 is stopped work, it is characterised in that by refined The refining plant that valve is connected with displacement oil gas pipeline.
- The displacement device for recovering oil and gas 8. heavy oil catalytic pyrolysis according to claim 5 is stopped work, it is characterised in that pass through preheating The heat recovery boiler that boiler valve is connected with displacement oil gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720628752.1U CN206751742U (en) | 2017-06-01 | 2017-06-01 | A kind of heavy oil catalytic pyrolysis, which is stopped work, replaces device for recovering oil and gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720628752.1U CN206751742U (en) | 2017-06-01 | 2017-06-01 | A kind of heavy oil catalytic pyrolysis, which is stopped work, replaces device for recovering oil and gas |
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| Publication Number | Publication Date |
|---|---|
| CN206751742U true CN206751742U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720628752.1U Active CN206751742U (en) | 2017-06-01 | 2017-06-01 | A kind of heavy oil catalytic pyrolysis, which is stopped work, replaces device for recovering oil and gas |
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| Country | Link |
|---|---|
| CN (1) | CN206751742U (en) |
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2017
- 2017-06-01 CN CN201720628752.1U patent/CN206751742U/en active Active
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