CN109404718A - It reduces oil product storage tank VOCs discharge amount and seals the system and method for nitrogen consumption - Google Patents
It reduces oil product storage tank VOCs discharge amount and seals the system and method for nitrogen consumption Download PDFInfo
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- CN109404718A CN109404718A CN201811525598.0A CN201811525598A CN109404718A CN 109404718 A CN109404718 A CN 109404718A CN 201811525598 A CN201811525598 A CN 201811525598A CN 109404718 A CN109404718 A CN 109404718A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 64
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000000470 constituent Substances 0.000 claims abstract description 14
- 238000004064 recycling Methods 0.000 claims abstract description 13
- 238000012545 processing Methods 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 10
- 230000005494 condensation Effects 0.000 claims description 10
- 230000008901 benefit Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 abstract description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Treating Waste Gases (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses the systems for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, pressure controller is selected including oil product storage tank, pressure calculator, blower, condenser, knockout drum and height, it is provided at the top of oil product storage tank and mends the gentle body outlet of nitrogen entrance, recycling entrance, gas vent is connect by pipeline with fans entrance, fan outlet is connect by pipeline with condenser inlet, and condensed gas is sent into knockout drum by condensator outlet by pipeline；Knockout drum bottom is provided with heavy constituent outlet, and light component escape orifice and emergency power mouth are provided at the top of knockout drum, and light component escape orifice is connect by pipeline with the recycling entrance being arranged at the top of oil product storage tank.Process device is simple, and selection is easy.Using blower and knockout drum, it is equipped with reasonable control pressurer system, the heavy constituent in VOCs can be collected in holding vessel in VOCs and be recycled, and light component is then used as inert gas to replace conventional nitrogen-sealed gas.
Description
Technical field
The present invention relates to oil storage and transportation, environmental protection and chemical process field, especially reduction oil product storage tank VOCs discharge amount with
Seal the system and method for nitrogen consumption.
Background technique
VOCs collection processing is petrochemicals and the generally existing process of raw materials storage system, fill process discharge
VOCs mostly uses the processes such as cryogenic condensation recycling, activated carbon adsorption and heat-accumulation combustion to be handled at present；To prevent discharging process
Caused pressure of storage tank is too low, and nitrogen adjustment valve is usually arranged and carries out ftercompction to storage tank.
The prior art collects the existing main problem of processing to VOCs: first, conventional condensation recovery process needs low temperature
Medium；Second, sealing is big with nitrogen consumption；Third, cryogenic condensation cold source carry out source problem, are easy to appear process frosting；4th,
It is high that VOCs post-processes investment cost.
Summary of the invention
The object of the present invention is to provide reduce oil product storage tank VOCs discharge amount and seal nitrogen consumption system and method,
Solve the indifferent gas of the collection of the VOCs of petrochemical industry (including coal chemical industry, coking of coal) industry oil product storage tank, recycling and storage tank
In body seal process, VOCs post-processes the technical problem that investment cost is high, process flow is complicated, sealing is big with nitrogen consumption.
To achieve the above object, the present invention adopts the following technical scheme: the present invention, which provides, reduces oil product storage tank VOCs discharge
The system of amount and sealing nitrogen consumption, including oil product storage tank, pressure calculator, blower, condenser, knockout drum (i.e. VOCs pressure
Power storage tank) and pressure controller is just selected, it is provided at the top of oil product storage tank and mends the gentle body outlet of nitrogen entrance, recycling entrance, gas
Outlet is connect by pipeline with fans entrance, and fan outlet is connect by pipeline with condenser inlet, and condensator outlet passes through pipe
Condensed gas is sent into knockout drum by road；
Knockout drum bottom is provided with heavy constituent outlet, is provided with light component escape orifice and emergency power mouth at the top of knockout drum, gently
Component escape orifice is connect by pipeline with the recycling entrance being arranged at the top of oil product storage tank；
Additional nitrogen is connect by pipeline with nitrogen entrance is mended.
Further, pressure-control valve is provided on the pipeline between gas vent and fans entrance.
Further, emergency power mouth is connect by pipeline with emergency processing equipment；Emergency processing equipment is to go to compress gas
Or VOVs processing equipment.
Further, it is provided on the pipeline between additional nitrogen and benefit nitrogen entrance and mends nitrogen valve；Gas vent and fans entrance
Between pipeline on be provided with isolating valve；Pipeline between light component escape orifice and the recycling entrance being arranged at the top of oil product storage tank
On be provided with isolating valve.
Further, pressure transmitter is provided on knockout drum and oil product storage tank.
Further, which further includes heat exchanger；Fan outlet is connected to by pipeline with heat exchanger entrance, heat exchanger exit
Gas after cooling is sent into condenser inlet by pipeline；It is provided on pipeline between heat exchanger exit and condenser inlet
Temperature-detecting device.
Further, blower is high-pressure frequency-conversion blower；Condenser uses recirculated water or air setting.
Further, oil product storage tank at least there are three；It is in parallel between oil product storage tank.
Further, heavy constituent is recycled in the form of lime set in VOCs.
Another aspect of the present invention provides above-mentioned reduction oil product storage tank VOCs discharge amount and seals the system of nitrogen consumption
Process includes the following steps:
Step 1 lays pipeline according to design drawing；Pressure-measuring-point is set on oil product storage tank, gas vent and fans entrance it
Between pipeline on pressure-control valve is set；
Step 2 carries out simulation calculating, it is determined whether need to choose other gas according to storage medium and the VOCs being related to composition
Body determines gaseous mediums content as gaseous mediums, calculates room temperature according to selectable high pressure blower outlet pressure and is condensed back to
Big VOCs amount is received, adjusts vector gas type and content when necessary；
Step 3 primarily determines that height selects pressure control according to oil product storage tank design pressure and system space size (containing pipe-line system)
The setting value of device processed, pressure reducing valve and voltage-controlled valve；
Step 4, by the reliability of dynamic analog calcutation verifying setting value.
The beneficial effects of the present invention are embodied in:
1, the system and method provided by the invention for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, using blower
And knockout drum, it is equipped with reasonable control pressurer system, the heavy constituent in VOCs can be collected in holding vessel in VOCs and be recycled, gently
Component is then used as inert gas to replace conventional nitrogen-sealed gas.Process device is simple, and selection is easy, and is VOCs emission reduction consumption reduction
New process.
2, the system and method provided by the invention for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, uses
High pressure blower pressurization, avoids the problem of conventional condensation recovery process needs cryogenic media.Knockout drum is set, both can be used for
VOCs liquid separation also provides store buffer space with gas for oil product storage tank sealing.Reduce sealing to be consumed with nitrogen.It condensed
Cheng Caiyong recirculated water is air-cooled, avoids cryogenic condensation cold source and carrys out source problem, avoids process frosting problem.Reduce process
VOCs discharge amount is recycled back to stocking system as storage tank ftercompction gas for lightweight VOCs as sealing gas, reduces VOCs
Post-process investment cost.
3, control pressurer system and parameter setting, storage tank ftercompction VOCs gas and nitrogen mixing proportion are through dynamic analog calcutation
Verifying guarantees safe operation of the system under various operating conditions.With the accumulation of light component in VOCs in the process, part light component
It is condensed, improves the rate of recovery of VOCs, reduce the investment of subsequent VOCs processing system, in the feelings for having low pressure gas system
Under condition, it can be not provided with VOCs absorption or incineration system, saved investment and material consumption and energy consumption, utilize the technique for having ready conditions
Place, have certain meaning and value.
Other features and advantages of the present invention will be illustrated in the following description, and partly becomes from specification
It is clear that understand through the implementation of the invention.The main object of the present invention and further advantage can be by specifications, power
Specifically noted scheme is achieved and obtained in sharp claim.
Detailed description of the invention
The present invention will be further described in detail with reference to the accompanying drawing.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
Appended drawing reference: 1- oil product storage tank, 2- pressure-control valve, 3- blower, 4- condenser, 5- knockout drum, 6- height choosing pressure
It is standby that force controller, 7- mend nitrogen entrance, 8- recycling entrance, 9- gas vent, 10- heat exchanger, 11- light component escape orifice, 12- emergency
Nitrogen valve, 16- temperature-detecting device, 17- pressure transmitter are mended with mouth, 13- heavy constituent outlet, the additional nitrogen of 14-, 15-.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is only exemplary,
It is only capable of for explanation and illustration technical solution of the present invention, and the limitation to technical solution of the present invention cannot be construed to.
The light component or industrial chemicals that the VOCs of petrochemical system is dissolved in oil product more change in temperature, pressure
When the material composition that volatilizes, be utility originally, but be discharged into atmosphere and become exhaust gas.VOCs is compressed, one
Adiabatic condensation temperature can be improved in aspect, on the other hand the heavy constituent recycled in VOCs at normal temperature improves the light component in VOCs
Pressure, can be used as storage tank ftercompction gas after depressurizing, reduce the consumption of nitrogen.
Embodiment 1, the present invention provides the systems for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, including
Oil product storage tank 1, pressure calculator, blower 3, condenser 4, knockout drum 5 and height select pressure controller 6, set at the top of oil product storage tank 1
It is equipped with and mends nitrogen entrance 7, recycling entrance 8 and gas vent 9, gas vent 9 is connect by pipeline with 3 entrance of blower, gas vent 9
Pressure-control valve 2 is provided on pipeline between 3 entrance of blower.
The outlet of blower 3 is connect by pipeline with 4 entrance of condenser, and the outlet of condenser 4 passes through pipeline for condensed gas
It is sent into knockout drum 5；5 bottom of knockout drum is provided with heavy constituent outlet 13, and light component escape orifice 11 is provided at the top of knockout drum 5
With emergency power mouth 12, emergency power mouth 12 is connect by pipeline with emergency processing equipment；Emergency processing equipment is to go to compress watt
This or VOVs processing equipment.Light component escape orifice 11 is connected by pipeline with the recycling entrance 8 that 1 top of oil product storage tank is arranged in
It connects；Additional nitrogen 14 is connect by pipeline with nitrogen entrance 7 is mended.
It is provided on pipeline between additional nitrogen 14 and benefit nitrogen entrance 7 and mends nitrogen valve 15；Gas vent 9 and 3 entrance of blower
Between pipeline on be provided with isolating valve；Between light component escape orifice 11 and the recycling entrance 8 being arranged at the top of oil product storage tank 1
Isolating valve is provided on pipeline.Pressure transmitter 17 is provided on knockout drum 5 and oil product storage tank 1.
Wherein, blower 3 is high-pressure frequency-conversion blower 3；Condenser 4 uses recirculated water or air setting.
As shown in Figure 1, oil product storage tank 1 at least there are three；It is in parallel between oil product storage tank 1.The quantity of oil product storage tank 1 is according to reality
The setting of border demand, setting branch pipe and general pipeline when piping connection.The light component of volatilization can be used as pressurising medium, follow in systems
Ring, instead of part nitrogen.
The process of above-mentioned reduction oil product storage tank VOCs discharge amount and the system of sealing nitrogen consumption, including walk as follows
It is rapid:
Step 1 lays pipeline according to design drawing；Pressure-measuring-point is set on oil product storage tank 1, and gas vent 9 enters with blower 3
Pressure-control valve 2 is set on the pipeline between mouthful；
Step 2 carries out simulation calculating, it is determined whether need to choose other gas according to storage medium and the VOCs being related to composition
Body determines gaseous mediums content as gaseous mediums, calculates room temperature according to selectable 3 outlet pressure of high pressure blower and is condensed back to
Big VOCs amount is received, adjusts vector gas type and content when necessary.
Step 3 primarily determines that height selects according to 1 design pressure of oil product storage tank and system space size (containing pipe-line system)
The setting value of pressure controller 6, pressure reducing valve and voltage-controlled valve；
Step 4, by the reliability of dynamic analog calcutation verifying setting value.
Embodiment 2 reduces oil product storage tank VOCs discharge amount and seals the system and method for nitrogen consumption, with embodiment 1,
The difference is that further including heat exchanger 10；The outlet of blower 3 is connected to by pipeline with 10 entrance of heat exchanger, and the outlet of heat exchanger 10 will
Gas after cooling is sent into 4 entrance of condenser by pipeline；It is arranged on pipeline between the outlet of heat exchanger 10 and 4 entrance of condenser
There is temperature-detecting device 16.It is shown in Figure 2.
Embodiment 3, there are three 3000 cubic metres of methanol tank (arch-roof tank, design pressure -500Pa- in certain chemical plant
It 2000Pa), is methanol steam and nitrogen envelope nitrogen in the VOCs component of discharge, it is 655Pa that breather valve, which breathes out pressure, and breather valve is inhaled
Entering pressure is 100Pa.
Big breathing maximum emission is 240m when feeding simultaneously3/ h, small breathing consider 10 degree of temperature difference, discharge amount 280
M3/h amounts to 520m3/h；The maximum Inhalation quantity that discharges simultaneously is 2070m3/h。
If not using internal floating roof tank, nitrogen consumption is 2072Nm3/h。
The system and method for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, nitrogen are provided using the present invention
Consumption is 24Nm3/ h(the nitrogen is the nitrogen amount that dissolution is pulled away in methyl alcohol).Circulating air gas flow is 2500m3/h,
3 outlet pressure 200kPa of blower, 3 power 80kW of blower, circulation water consumption are 25m3/ h, 5 Liquid Phase Methanol of knockout drum after condensation
For 580kg/h.
The methanol to volatilize in above-mentioned technique recycles in closed system, not because VOCs discharges bring loss of material, no
It needs to be arranged VOCs reprocessing facility, does not need setting internal floating roof tank, cost can be effectively reduced.
To sum up, the present invention provides the system and method for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, will
The VOCs that oil product storage tank 1 volatilizees is recycled after carrying out appropriate pressurization condensation, and unrecovered gas is circulated back to oil product storage tank 1, as benefit
Means of press seals gas uses.
By using blower 3 and knockout drum, it is equipped with reasonable control pressurer system, the heavy constituent in VOCs can be in knockout drum
It is recycled at the heavy constituent outlet 13 of 5 bottoms setting.Light component is then used as inert gas that conventional nitrogen-sealed is replaced to use
Gas.The problem of conventional condensation recovery process needs cryogenic media is avoided, (or cancellation) conventional nitrogen-sealed consumption nitrogen is reduced and asks
Topic, alleviates the load of subsequent VOCs treatment process (activated carbon adsorption or burning process).It can cancel in the case that condition is good
Subsequent VOCs treatment process.
It is to be noted that heavy constituent has difference according to the material difference of storage tank storage, it is in contrast.If it is
Methanol tank is protected with nitrogen, then methanol is exactly heavy constituent.Because it is different to separate pressure tank, coagulating the component got off also can be different.
The foregoing is merely the preferable specific embodiments of the present invention, but scope of protection of the present invention is not limited thereto,
The change or replacement that anyone skilled in the art is expected in the technical scope disclosed by the present invention should all be contained
Lid is within protection scope of the present invention.
Claims (10)
1. the system for reducing oil product storage tank VOCs discharge amount and sealing nitrogen consumption, it is characterised in that: including oil product storage tank
(1), blower (3), condenser (4), knockout drum (5) and height select pressure controller (6), are provided with benefit at the top of oil product storage tank (1)
Nitrogen entrance (7), recycling entrance (8) and gas vent (9), gas vent (9) are connect by pipeline with blower (3) entrance, blower
(3) outlet is connect by pipeline with condenser (4) entrance, and condenser (4) outlet passes through pipeline for condensed gas feeding point
From in tank (5)；
Knockout drum (5) bottom is provided with heavy constituent outlet (13), be provided at the top of knockout drum (5) light component escape orifice (11) and
Emergency power mouth (12), light component escape orifice (11) are connected by pipeline and the recycling entrance (8) being arranged at the top of oil product storage tank (1)
It connects；
Additional nitrogen (14) is connect by pipeline with nitrogen entrance (7) are mended.
2. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In being provided with pressure-control valve (2) on the pipeline between gas vent (9) and blower (3) entrance.
3. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In emergency power mouth (12) is connect by pipeline with emergency processing equipment；Emergency processing equipment is to go to compress gas or VOVs
Processing equipment.
4. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In, additional nitrogen (14) and mends to be provided on pipeline between nitrogen entrance (7) and mend nitrogen valve (15)；Gas vent (9) and blower (3)
Isolating valve is provided on pipeline between entrance；Light component escape orifice (11) and setting being recovered at the top of oil product storage tank (1)
Isolating valve is provided on pipeline between mouth (8).
5. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In being provided with pressure transmitter (17) on, knockout drum (5) and oil product storage tank (1).
6. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In the system further includes heat exchanger (10)；Blower (3) outlet is connected to by pipeline with heat exchanger (10) entrance, heat exchanger (10)
Gas after cooling is sent into condenser (4) entrance by pipeline by outlet；Between heat exchanger (10) outlet and condenser (4) entrance
Pipeline on be provided with temperature-detecting device (16).
7. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In blower (3) is high-pressure frequency-conversion blower (3)；Condenser (4) uses recirculated water or air setting.
8. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In, oil product storage tank (1) at least there are three；It is in parallel between oil product storage tank (1).
9. the system for reducing oil product storage tank VOCs discharge amount as described in claim 1 and sealing nitrogen consumption, feature exist
In heavy constituent is recycled in the form of lime set in VOCs.
10. a kind of disappeared using reduction oil product storage tank VOCs discharge amount as claimed in any one of claims 1-9 wherein and sealing nitrogen
The process of the system of consumption, which comprises the steps of:
Step 1 lays pipeline according to design drawing；Pressure-measuring-point, gas vent (9) and blower are set on oil product storage tank (1)
(3) pressure-control valve (2) are set on the pipeline between entrance；
Step 2 carries out simulation calculating, it is determined whether need to choose other gas according to storage medium and the VOCs being related to composition
Body determines gaseous mediums content as gaseous mediums, calculates room temperature condensation according to selectable high pressure blower (3) outlet pressure
Big VOCs amount is recycled, adjusts vector gas type and content when necessary；
Step 3, according to oil product storage tank (1) design pressure and system space size, primarily determine height select pressure controller (6),
The setting value of pressure reducing valve and pressure-control valve (2)；
Step 4, by the reliability of dynamic analog calcutation verifying setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525598.0A CN109404718B (en) | 2018-12-13 | 2018-12-13 | System and method for reducing VOCs emission and sealed nitrogen consumption of oil storage tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811525598.0A CN109404718B (en) | 2018-12-13 | 2018-12-13 | System and method for reducing VOCs emission and sealed nitrogen consumption of oil storage tank |
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| CN109404718A true CN109404718A (en) | 2019-03-01 |
| CN109404718B CN109404718B (en) | 2023-12-19 |
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