CN221085118U - Asphalt storage tank tail gas treatment system - Google Patents
Asphalt storage tank tail gas treatment system Download PDFInfo
- Publication number
- CN221085118U CN221085118U CN202322898898.6U CN202322898898U CN221085118U CN 221085118 U CN221085118 U CN 221085118U CN 202322898898 U CN202322898898 U CN 202322898898U CN 221085118 U CN221085118 U CN 221085118U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- storage tank
- asphalt storage
- asphalt
- valve
- 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.)
- Active
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 85
- 238000003860 storage Methods 0.000 title claims abstract description 77
- 239000007789 gas Substances 0.000 claims abstract description 81
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 75
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 38
- 230000001105 regulatory effect Effects 0.000 claims abstract description 32
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004939 coking Methods 0.000 abstract description 3
- 238000004821 distillation Methods 0.000 abstract description 3
- 239000000779 smoke Substances 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
Abstract
The utility model belongs to the technical field of tail gas treatment of tar distillation devices in coking industry, and particularly relates to a tail gas treatment system of an asphalt storage tank, which is characterized by comprising an asphalt storage tank, a tail gas condenser, a nitrogen self-operated regulating valve, a pressure regulating valve, a single suction valve and a single suction valve, wherein the tail gas condenser is arranged above the asphalt storage tank; the outlet of the pressure regulating valve is connected with the exhaust cleaning tower. The utility model has the advantages that: 1) The single suction valve and the single calling valve are adopted as safety measures, so that accidents of overpressure rupture of the asphalt storage tank are avoided; 2) The tail gas condenser is additionally arranged, so that the tail gas emission of the asphalt storage tank can be reduced, the loss of asphalt products is reduced, the venturi tube of the subsequent exhaust cleaning tower is prevented from being blocked, and the new wash oil consumption of the subsequent exhaust cleaning tower is reduced.
Description
Technical Field
The utility model belongs to the technical field of tail gas treatment of tar distillation devices in coking industry, and particularly relates to a tail gas treatment system of an asphalt storage tank.
Background
At present, a tar distillation device modified asphalt unit comprises an asphalt storage tank, medium-temperature asphalt and a modified asphalt storage tank, wherein asphalt is sent to the temperature of 220 ℃, and the flash point of the asphalt is about 240 ℃, so that the asphalt storage tank belongs to a class-C product storage tank, tail gas of the storage tank is cleaned through an exhaust main pipe and then sent to a gas suction pipeline or a tail gas incinerator for treatment after being cleaned through an exhaust cleaning tower, and because the amount of the tail gas of the asphalt is large, the condition that negative pressure needs to be supplemented is rarely caused, the asphalt storage tank is generally not provided with a nitrogen seal, and is not provided with a pressure control system, and a breather valve and a breather manhole are adopted as safety measures.
After production operation, the asphalt storage tank tail gas treatment system often has the air leakage condition and even has the accident of asphalt storage tank explosion. The accident occurs because the temperature of the asphalt storage tank for feeding asphalt is high, the amount of asphalt smoke tail gas is large, after the tail gas is cleaned by an exhaust cleaning tower, the cleaning oil is saturated very quickly, if the new cleaning oil is not replaced in time, the venturi tube of the sucked equipment is blocked, the tail gas discharge is not smooth, the pressure of the asphalt storage tank is increased, the blocking of a breather valve and a breather manhole is very easy to be caused due to the special property of the asphalt smoke, and the overpressure rupture of the asphalt storage tank is caused, so that the explosion occurs.
To prevent such accidents, the existing asphalt storage tank tail gas treatment system needs to be improved, and the improvement direction is that: firstly, in order to prevent the venturi from being blocked, the feeding amount of asphalt tail gas should be reduced so as to reduce the update frequency of wash oil; second, the occurrence of safety devices such as a clogged breathing valve is avoided; thirdly, because explosion accidents occur, the discharging temperature is controlled unstably, the on-site feeding temperature can exceed 240 ℃, or the methane content of the asphalt smoke tail gas is high, and the asphalt smoke tail gas is treated according to the type B explosive gas.
The Chinese patent application No. 2016610908242. X discloses a treatment system and system for VOCs industrial waste gas, which thoroughly decomposes VOCs by adopting an absorbent washing and burning process, and the decomposed sulfur and nitrogen oxides have no treatment mode and are only suitable for the application of VOCs treatment with low sulfur and nitrogen content. The Chinese patent application number 201420056120.9 discloses a treatment device for the exhaust gas in a coking gas purification zone, which is used for pickling the exhaust gas, washing the exhaust gas with water and discharging the cleaned exhaust gas, is only suitable for purifying the reduction state gas, and is not suitable for purifying the exhaust gas of an oil depot and the like.
Disclosure of utility model
The utility model aims to provide an asphalt storage tank tail gas treatment system, which overcomes the defects of the prior art, manages asphalt storage tanks according to class B storage tanks, seals one tank by one nitrogen, and cools the tail gas exhaust of each asphalt storage tank so as to recover a large amount of condensable gas, avoid the blockage of a venturi tube and change a breather valve into a single-suction valve and a single-breathing valve as safety measures.
In order to achieve the above purpose, the present utility model is realized by the following technical scheme:
The tail gas treatment system for the asphalt storage tank is characterized by comprising an asphalt storage tank, a tail gas condenser, a nitrogen self-operated regulating valve, a pressure regulating valve, a single suction valve and a single suction valve, wherein the tail gas condenser is arranged above the asphalt storage tank; the outlet of the pressure regulating valve is connected with an exhaust cleaning tower, and the asphalt storage tanks are lifted and managed according to the type B storage tanks, and one tank is sealed with nitrogen.
Furthermore, a nitrogen protection pipeline is arranged at the inlet of the single call valve, and a rotameter is arranged on the nitrogen protection pipeline.
Further, a cooling water loop is arranged on the tail gas condenser.
Further, the number of the asphalt storage tanks is not limited to one, and the tail gas outlets of the asphalt storage tanks are all connected with an exhaust cleaning tower.
Further, the liquid outlet of the tail gas condenser is connected to the asphalt storage tank in a self-flowing manner.
Further, a gas outlet of the tail gas condenser is connected with a flame arrester.
Further, a nitrogen protection pipe is arranged in front of the single call valve.
Compared with the prior art, the utility model has the beneficial effects that:
1) The traditional process adopts the breather valve to be easy to block, and adopts the single suction valve and the single calling valve as safety measures, so that the single suction valve and the single calling valve are prevented from being blocked, the single suction valve is arranged on a nitrogen pipeline, the single calling valve is arranged on a cooled exhaust pipeline, and nitrogen protection is arranged in front of the single calling valve, thereby avoiding the occurrence of accidents of overpressure rupture of an asphalt storage tank; 2) The utility model is additionally provided with the tail gas condenser, so that the tail gas emission of the asphalt storage tank can be reduced, the loss of asphalt products is reduced, the venturi tube of the subsequent exhaust cleaning tower is prevented from being blocked, and the new wash oil consumption of the subsequent exhaust cleaning tower is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
In the figure: the device comprises a 1-asphalt storage tank, a 2-tail gas condenser, a 3-nitrogen self-operated regulating valve, a 4-pressure regulating valve, a 5-single suction valve, a 6-single suction valve, a 7-rotameter, an 8-flame arrester, a 9-second asphalt storage tank, a 10-second tail gas condenser, a 11-second nitrogen self-operated regulating valve, a 12-second pressure regulating valve, a 13-second single suction valve, a 14-second single suction valve, a 15-second rotameter, a 16-second flame arrester and a PRC-pressure recording regulating instrument.
Detailed Description
The technical solutions of the present utility model will be clearly and fully described below with reference to specific embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments.
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following description will briefly explain the embodiments that are needed in the embodiments or the prior art descriptions, and it is obvious that the embodiments in the following description are some embodiments of the present utility model and that other embodiments may be obtained according to these embodiments without inventive effort for a person skilled in the art.
The components of the embodiments of the present utility model generally described and illustrated in the specific embodiments herein can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as provided in the specific embodiments, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.
Referring to fig. 1, the structure schematic diagram of an embodiment of an asphalt storage tank tail gas treatment system of the utility model comprises an asphalt storage tank 1, a tail gas condenser 2, a nitrogen self-operated regulating valve 3, a pressure regulating valve 4, a single suction valve 5 and a single call valve 6, wherein the tail gas condenser 2 is arranged above the asphalt storage tank 1, the top opening of the tail gas condenser 2 is respectively connected with the single call valve 6 and the pressure regulating valve 4, a nitrogen inlet pipe is communicated with the asphalt storage tank 1, the nitrogen inlet pipe is provided with the nitrogen self-operated regulating valve 3 and the single suction valve 5, and the single suction valve 5 is arranged on the nitrogen inlet pipe to prevent blockage; the outlet of the pressure regulating valve 4 is connected with an exhaust cleaning tower. And (3) lifting asphalt storage tanks, managing according to the type B storage tanks, and sealing one tank with nitrogen.
A nitrogen protection pipe is arranged in front of the single calling valve 6, and a rotameter 7 is arranged on the nitrogen protection pipe. A rotameter 7 is located at the inlet of the single call valve 6. The tail gas condenser 2 is provided with a cooling water loop for cooling the condensable gas in the asphalt tail gas to be re-condensed into liquid, and the liquid flows back into the asphalt storage tank 1. When the asphalt storage tank is lifted and treated according to the class B storage tank, the gas outlet of the tail gas condenser 2 is required to be connected with a flame arrester 8.
In the embodiment, the number of the asphalt storage tanks 1 is two, and the asphalt storage tank further comprises a second asphalt storage tank 9, and tail gas outlets of the asphalt storage tanks are all connected with an exhaust cleaning tower. The system in which the second asphalt storage tank 9 is arranged comprises the second asphalt storage tank 9, a second tail gas condenser 10, a second nitrogen self-operated regulating valve 11, a second pressure regulating valve 12, a second single suction valve 13 and a second single suction valve 14, wherein the second tail gas condenser 10 is arranged above the second asphalt storage tank 9, the top opening of the second tail gas condenser 101 is respectively connected with the second single suction valve 14 and the second pressure regulating valve 12, a nitrogen inlet pipe is communicated with the second asphalt storage tank 9, and the nitrogen inlet pipe is provided with the second nitrogen self-operated regulating valve 11 and the second single suction valve 13; the outlet of the second pressure regulating valve 12 is connected to the exhaust gas cleaning tower.
A nitrogen protection pipe is arranged in front of the second single calling valve 14, and a second rotameter 15 is arranged on the nitrogen protection pipe. A second rotameter 15 is located at the inlet of the second single call valve 14. The second tail gas condenser 10 is provided with a cooling water loop for cooling the condensable gas in the asphalt tail gas to be re-condensed into liquid and automatically flows back into the second asphalt storage tank 9. A second flame arrester 16 is connected to the gas outlet of the tail gas condenser 10.
The operation of the asphalt storage tank tail gas treatment system provided by the utility model comprises the following steps:
1) The pressure control range of the asphalt storage tank 1 is-0.3 to 1.35kPa, when the pressure is lower than 0.3kPa, the nitrogen supplement is controlled through the nitrogen self-operated regulating valve 3, if the nitrogen self-operated regulating valve 3 fails, air is sucked through the single suction valve 5 when the pressure is lower than-0.3 kPa, when the PRC01 is higher than 0.9kPa, the asphalt storage tank 1 discharges redundant tail gas through the pressure regulating valve 4, the asphalt storage tank is sent to an exhaust cleaning tower, if the pressure regulating valve 4 fails, the tail gas is discharged through the single suction valve 6 when the PRC01 is higher than 1.35 kPa;
2) In order to reduce the exhaust emission of the asphalt storage tank 1, an exhaust condenser 2 is arranged at the upper part of the asphalt storage tank 1, the exhaust discharged by the asphalt storage tank 1 firstly enters the exhaust condenser 2, after being condensed and cooled by the exhaust condenser 2, condensate automatically flows back to the asphalt storage tank 1 from the lower part of the exhaust condenser 2, and gas is discharged from the upper part of the asphalt storage tank 1, passes through a flame arrester 8, and the discharge is regulated by a pressure regulating valve 4 and is sent to an exhaust cleaning tower;
3) To prevent the single suction valve 5 from being blocked, the single suction valve is arranged on the nitrogen pipeline;
4) And a single-call valve 6 is arranged between the back of the flame arrester 8 and the pressure regulating valve 4, and in order to prevent the blocking phenomenon of the single-call valve 6, nitrogen protection is arranged in front of the single-call valve, namely, nitrogen is continuously introduced into the single-call valve in a small flow way, and the introduced nitrogen quantity is regulated through a rotameter 7 so as to ensure the smoothness of a single-call valve pipeline.
The working process of the second asphalt storage tank is the same as the above, and no description is given.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The tail gas treatment system for the asphalt storage tank is characterized by comprising an asphalt storage tank, a tail gas condenser, a nitrogen self-operated regulating valve, a pressure regulating valve, a single suction valve and a single suction valve, wherein the tail gas condenser is arranged above the asphalt storage tank; the outlet of the pressure regulating valve is connected with the exhaust cleaning tower; and (3) lifting asphalt storage tanks, managing according to the type B storage tanks, and sealing one tank with nitrogen.
2. The asphalt storage tank tail gas treatment system according to claim 1, wherein a nitrogen protection pipe is arranged at the inlet of the single-calling valve, and a rotameter is arranged on the nitrogen protection pipe.
3. The asphalt storage tank tail gas treatment system according to claim 1, wherein a cooling water loop is arranged on the tail gas condenser.
4. The asphalt storage tank tail gas treatment system according to claim 1, wherein the number of asphalt storage tanks is not limited to one, and the tail gas outlets of the asphalt storage tanks are all connected with an exhaust cleaning tower.
5. An asphalt storage tank tail gas treatment system according to claim 1, wherein the liquid outlet of said tail gas condenser is self-flowing connected to an asphalt storage tank.
6. The asphalt storage tank tail gas treatment system of claim 1, wherein a gas outlet of said tail gas condenser is connected to a flame arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322898898.6U CN221085118U (en) | 2023-10-27 | 2023-10-27 | Asphalt storage tank tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322898898.6U CN221085118U (en) | 2023-10-27 | 2023-10-27 | Asphalt storage tank tail gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221085118U true CN221085118U (en) | 2024-06-07 |
Family
ID=91326064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322898898.6U Active CN221085118U (en) | 2023-10-27 | 2023-10-27 | Asphalt storage tank tail gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221085118U (en) |
-
2023
- 2023-10-27 CN CN202322898898.6U patent/CN221085118U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215086121U (en) | Coke oven gas ammonia process desulfurization regeneration tail gas processing system | |
| CN204051368U (en) | carbon five tail gas recycling and treating device | |
| CN221085118U (en) | Asphalt storage tank tail gas treatment system | |
| CN117547921A (en) | Asphalt storage tank tail gas treatment system | |
| CN208449017U (en) | A kind of VOC recycling reprocessing device | |
| CN220345374U (en) | Spray tower for white treatment of incinerator flue gas emission | |
| CN104960809A (en) | Oil product storage tank protection method | |
| CN218209601U (en) | Tail gas optimizing treatment device | |
| CN220779647U (en) | Polypropylene SPG production tail gas recovery device | |
| CN214809778U (en) | Full-automatic medicine adding and liquid discharging waste gas treatment system | |
| CN206276219U (en) | A kind of acid fog absorption tower tail gas clean-up tapping equipment | |
| CN220744171U (en) | Collecting and recycling device for volatile materials | |
| CN213567765U (en) | Sulfur-containing waste gas treatment device for top of liquid sulfur tank | |
| CN221385880U (en) | Hydrogen sulfide desorption and pest removal device | |
| CN220779640U (en) | Tail gas purification and accident hydrogen chloride treatment system in electronic grade hydrogen chloride production process | |
| CN113893639A (en) | Tail gas recovery device for reboiler rectification column of triethylene glycol dehydration device | |
| CN204726957U (en) | Storage Tanks Combustible Liquid fender guard | |
| CN220194399U (en) | Waste gas treatment system | |
| CN212799639U (en) | A water stable system for sulphuric acid production | |
| CN216653449U (en) | Heavy oil gas treatment device with high condensation point | |
| CN212492302U (en) | Carbon disulfide tail gas treatment device | |
| CN220622849U (en) | External water seal device of pipeline | |
| CN216259897U (en) | Intermediate tank area tail gas treatment device of styrene device | |
| CN212594870U (en) | Acid water tank top gas treatment system | |
| CN218901341U (en) | Tail gas treatment equipment for monoammonium glycyrrhizinate drying process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |