CN1268869C - System for feeding volatilizable liquid phase hydrocarbon - Google Patents
System for feeding volatilizable liquid phase hydrocarbon Download PDFInfo
- Publication number
- CN1268869C CN1268869C CN 200310117271 CN200310117271A CN1268869C CN 1268869 C CN1268869 C CN 1268869C CN 200310117271 CN200310117271 CN 200310117271 CN 200310117271 A CN200310117271 A CN 200310117271A CN 1268869 C CN1268869 C CN 1268869C
- Authority
- CN
- China
- Prior art keywords
- hydro carbons
- storage tank
- pipeline
- propylene
- hydrocarbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 70
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 70
- 239000007791 liquid phase Substances 0.000 title claims abstract description 15
- 239000004215 Carbon black (E152) Substances 0.000 title abstract 16
- 239000012071 phase Substances 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 8
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 94
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 81
- 238000007599 discharging Methods 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000006200 vaporizer Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- CESYKOGBSMNBPD-UHFFFAOYSA-N Methyclothiazide Chemical compound ClC1=C(S(N)(=O)=O)C=C2S(=O)(=O)N(C)C(CCl)NC2=C1 CESYKOGBSMNBPD-UHFFFAOYSA-N 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 230000003276 anti-hypertensive effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229960003739 methyclothiazide Drugs 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a feeding system for volatile liquid phase hydrocarbon, which comprises a powder material conveying unit, a gas phase hydrocarbon compressor, a feeding pipeline, a feeding flow control valve, a hydrocarbon storage tank, a hydrocarbon charge pump, a discharge pipeline and a material level detector, wherein the feeding flow control valve is connected with the hydrocarbon storage tank; the feeding flow control valve controls liquid levels of the hydrocarbon storage tank through the material level detector; the hydrocarbon storage tank is connected with the hydrocarbon charge pump through the discharge pipeline. The present invention is characterized in that a gas phase hydrocarbon pipeline is led from an outlet of a hydrocarbon carburetor of the powder material conveying unit, which is provided with a pressure controlling and adjusting valve; a gas phase hydrocarbon pipeline is led from the top of the hydrocarbon storage tank, which is provided with a pressure controlling and adjusting valve; the top of the hydrocarbon storage tank also has a pressure controller. The pressure of the hydrocarbon storage tank in the feeding system for volatile liquid phase hydrocarbon can be controlled effectively to ensure the stability of the pressure.
Description
Technical field
The present invention relates to a kind of feed system, particularly a kind of volatile liquid phase hydro carbons feed system.
Background technique
Existing propylene feed system comprises feeding line, feed rate control valve, propylene tank, propylene charge pump, discharging pipeline and level detector, feeding line links to each other with propylene tank by the feed rate control valve, and propylene enters propylene tank by feeding line and feed rate control valve; The feed rate control valve is by the liquid level of level detector control propylene tank, and propylene tank links to each other with the propylene charge pump by the discharging pipeline.
It is liquid propylene between 1.8～1.9Mpa that extraneous propylene supply system (propylene supply system) provides pressure, is stored in the propylene tank after entering polyplant, is pressurized to 3.5～4.0Mpa by the propylene charge pump afterwards, for each unit use in the polyplant.
Propylene tank need maintain in certain pressure range, so both can guarantee the inlet pressure of propylene charge pump, guarantee the last amount problem of pump, can make the pressure of propylene tank be lower than the pressure of propylene feedstocks tank field, battery limit (BL) again, guarantee the charging of propylene tank, the scope of control propylene tank pressure is between 1.2～1.6Mpa, if the overpressure of propylene tank, then the propylene of battery limit (BL) is not easy to enter in the propylene tank, can't guarantee the liquid level of propylene tank; The hypotony of propylene tank then can't guarantee the amount that goes up of charge pump.But owing to influenced by amblent air temperature, winter temperature is on the low side, and the pressure of propylene tank does not often reach 1.0Mpa, needs propylene tank is boosted; Summer temp is higher, needs propylene tank is carried out step-down.The pressure of the propylene tank in the existing propylene feed system is influenced by ambient temperature, can't remain within the zone of reasonableness, can cause a series of problem in practical operation.
1, the pressure of propylene tank is on the low side, amount is bad on the pump, can impact upstream device: the nozzle of (1) catalyzer is washed by the liquid propylene that the charge pump outlet provides, if propylene is immeasurable, at once can plug nozzle, cause the accident of the cleaning of stopping, each cleaning needs about 48 hours, causes the loss more than 3,000,000 yuan at least.(2) propylene does not have amount, and the propylene that device is normally used is under-supply, does not have amount to surpass 20 minutes, can cause the interior no liquid phase propylene of device to use, and causes comprehensive stopping production.
2, the pressure of propylene tank is higher, and the propylene of battery limit (BL) can not be added in the propylene tank, can't normally add in 5 minutes, will cause the propylene tank slack tank, and then cause comprehensive stopping production, causes very big loss.
The technical measures of taking at this problem at present are: adopt summer cooling water that the propylene tank surface is cooled off, every day is the water consumption thousands of tons of at least, causes the waste of water resources, and antihypertensive effect is not desirable especially.
Summary of the invention
The propylene feed system that the purpose of this invention is to provide a kind of propylene tank pressure stability not influenced by ambient temperature.
The objective of the invention is to reach by the following technical programs:
A kind of volatile liquid phase hydro carbons feed system comprises the powder supply unit, gas phase hydro carbons compressor, feeding line, feed rate control valve, hydro carbons storage tank, hydro carbons charge pump, discharging pipeline, level detector; The feed rate control valve links to each other with the hydro carbons storage tank, and hydro carbons enters the hydro carbons storage tank by feeding line and feed rate control valve; The feed rate control valve is by level detector control hydro carbons tank level, the hydro carbons storage tank links to each other with the hydro carbons charge pump by the discharging pipeline, it is characterized in that: from the hydro carbons vaporizer outlet bleed phase hydro carbons pipeline of described powder supply unit, be connected to the top of described hydro carbons storage tank, on described gas phase hydro carbons pipeline, establish a pressure control modulating valve; Draw a gas phase hydro carbons pipeline from the top of described hydro carbons storage tank, be connected to place, described gas phase hydro carbons suction port of compressor, establish a pressure control modulating valve at gas phase hydro carbons pipeline.
The top of described hydro carbons storage tank also has a pressure controller, links to each other with the pressure control modulating valve by the SC sigmal control circuit respectively.
Described pressure control modulating valve is used to control described hydro carbons tank inner pressure, regulates automatically according to setting value, and the pressure of keeping propylene tank is between 1.2～1.6Mpa.
Described gas phase hydro carbons pipeline adopts 1 " carbon steel pipe line.
Described volatile liquid phase hydro carbons can be C
1-C
1Alkane or C
2-C
4Alkene or alkynes, preferred propylene.
The invention will be further described below by drawings and Examples, but do not mean that limitation of the present invention.
Description of drawings
Fig. 1 is the structural representation of former propylene feed system;
Fig. 2 represents the structural representation of propylene feed of the present invention system.
Embodiment
As shown in Figure 1, existing propylene feed system comprises: feeding line 1, feed rate control valve 2, propylene tank 4, propylene charge pump 6, discharging pipeline 5, level detector 3.Feeding line 1 links to each other with propylene tank 4 by feed rate control valve 2, and propylene enters propylene tank 4 by feeding line 1 and feed rate control valve 2; Feed rate control valve 2 is regulated the propylene feed amount by level detector 3, and propylene tank 4 links to each other with propylene charge pump 6 by discharging pipeline 5.
As shown in Figure 2,, be connected to the top of propylene tank 4, on gas-phase propene pipeline 7, establish a pressure control modulating valve 11 from the propylene vaporizer outlet bleed phase propylene pipeline 7 of powder supply unit; Draw a gas-phase propene pipeline 8 from the top of propylene tank 4, be connected to place, gas-phase propene suction port of compressor, establish a pressure control modulating valve 9 and a stop valve 12 on gas-phase propene pipeline 8, stop valve 12 is between pressure control modulating valve 9 and propylene tank 4.
When stop valve 12 can guarantee to go wrong in the system that newly adds, keep the state that disconnects with original system.
Dotted portion is the SC sigmal control circuit of instrument among the figure, establishes a pressure controller 11 at the top of propylene tank 4, and it can link to each other with pressure control modulating valve 11 with pressure control modulating valve 9 respectively by the SC sigmal control circuit.
The pressure of gas-phase propene is about about 2.6Mpa, satisfies the usage requirement that propylene tank boosts fully, by regulating the aperture of pressure control modulating valve, also can make the pressure of propylene tank be unlikely to too high.After the propylene feed system improved, using effect was good.
The Methyclothiazide of a propylene feed system compressor that reclaims propylene circulating air, compressor is the propylene gas compressor of powder supply unit in former design, pressure is between 1.1～1.5Mpa, so can adapt to the high pressure about the 1.6～1.7Mpa in summer in the propylene tank, can effectively extract the gas-phase propene component in the propylene tank, reduce the pressure in the propylene tank.The gas-phase propene pipeline adopts 1, and " carbon steel pipe line is drawn from the propylene tank top, is connected on the pipeline of suction port of compressor, establishes the pressure control modulating valve, according to the pressure of propylene tank, reconciles automatically, keeps pressure between 1.2～1.6Mpa.
The top of propylene tank is provided with pressure controller, is used for monitoring the pressure of propylene tank, and by the aperture that electric signal is regulated the pressure control modulating valve, guarantees that the interior pressure of propylene tank is in normal range (NR).
No matter in summer or winter, the pressure of the propylene tank in the described propylene feed system can both be controlled effectively, guaranteed pressure steadily; Simultaneously, gas-phase propene unit and compressor are not all had side effects, described propylene feed system operates steadily, and has avoided the stopping production that causes thus and the waste of great lot of water resources.
Claims (7)
1, a kind of volatile liquid phase hydro carbons feed system comprises the powder supply unit, gas phase hydro carbons compressor, feeding line, feed rate control valve, hydro carbons storage tank, hydro carbons charge pump, discharging pipeline, level detector; The feed rate control valve links to each other with the hydro carbons storage tank, and hydro carbons enters the hydro carbons storage tank by feeding line and feed rate control valve; The feed rate control valve is by level detector control hydro carbons tank level, the hydro carbons storage tank links to each other with the hydro carbons charge pump by the discharging pipeline, it is characterized in that: from the hydro carbons vaporizer outlet bleed phase hydro carbons pipeline of described powder supply unit, be connected to the top of described hydro carbons storage tank, on described gas phase hydro carbons pipeline, establish a pressure control modulating valve; Draw a gas phase hydro carbons pipeline from the top of described hydro carbons storage tank, be connected to place, described gas phase hydro carbons suction port of compressor, establish a pressure control modulating valve at gas phase hydro carbons pipeline.
2, volatile liquid phase hydro carbons feed system according to claim 1, it is characterized in that: stop valve is established on the top at described hydro carbons storage tank.
3, volatile liquid phase hydro carbons feed system according to claim 2, it is characterized in that: described hydro carbons is C
1～C
4Alkane.
4, volatile liquid phase hydro carbons feed system according to claim 2, it is characterized in that: described hydro carbons is C
2～C
4Alkene.
5, volatile liquid phase hydro carbons feed system according to claim 2, it is characterized in that: described hydro carbons is C
2～C
4Alkynes.
6, volatile liquid phase hydro carbons feed system according to claim 4, it is characterized in that: described hydro carbons is a propylene.
7, volatile liquid phase hydro carbons feed system according to claim 1 is characterized in that: described gas phase hydro carbons pipeline adopts 1 " carbon steel pipe line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117271 CN1268869C (en) | 2003-12-10 | 2003-12-10 | System for feeding volatilizable liquid phase hydrocarbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310117271 CN1268869C (en) | 2003-12-10 | 2003-12-10 | System for feeding volatilizable liquid phase hydrocarbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1626871A CN1626871A (en) | 2005-06-15 |
| CN1268869C true CN1268869C (en) | 2006-08-09 |
Family
ID=34760957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310117271 Expired - Lifetime CN1268869C (en) | 2003-12-10 | 2003-12-10 | System for feeding volatilizable liquid phase hydrocarbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1268869C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201520951D0 (en) * | 2015-11-27 | 2016-01-13 | Babcock Ip Man Number One Ltd | Method of using VOC as oil tank blanket gas |
-
2003
- 2003-12-10 CN CN 200310117271 patent/CN1268869C/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| CN1626871A (en) | 2005-06-15 |
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Granted publication date: 20060809 |