CN111957165A - Tail gas treatment process and system for kettle type heating modified asphalt reaction kettle - Google Patents
Tail gas treatment process and system for kettle type heating modified asphalt reaction kettle Download PDFInfo
- Publication number
- CN111957165A CN111957165A CN202010919943.XA CN202010919943A CN111957165A CN 111957165 A CN111957165 A CN 111957165A CN 202010919943 A CN202010919943 A CN 202010919943A CN 111957165 A CN111957165 A CN 111957165A
- Authority
- CN
- China
- Prior art keywords
- gas
- tail gas
- pipeline
- chamber
- tail
- 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.)
- Granted
Links
- 239000010426 asphalt Substances 0.000 title claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 65
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 219
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000003595 mist Substances 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 231100000357 carcinogen Toxicity 0.000 description 3
- 239000003183 carcinogenic agent Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000006068 polycondensation reaction Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- 230000000711 cancerogenic effect Effects 0.000 description 2
- 231100000315 carcinogenic Toxicity 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011269 tar Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000011883 electrode binding agent Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a tail gas treatment process and a tail gas treatment system of a kettle type heating modified asphalt reaction kettle, wherein the tail gas of the modified asphalt reaction kettle is pumped from a flash oil tank to a tail gas cooler for cryogenic cooling, the condensable gas component remained in the tail gas is cooled into a liquid state, and the cooled gas-liquid mixture is separated into a liquid component through a gas-liquid separator; the separated non-condensable combustible gas is subjected to pressure boosting by a tail gas fan and then is divided into two paths, and one path of the non-condensable combustible gas is returned to a flash oil tank and used for stabilizing the system pressure at the upstream of the tail gas fan; and the other path is sent to an activated carbon filter to remove fog drops, and the obtained pure non-condensable combustible gas passes through a safe water seal tank and then is mixed into a gas pipeline at the upstream of the tubular furnace, and is sent to the tubular furnace together with the gas for incineration. The invention removes condensable gas components in the tail gas through deep cooling, gas-liquid separation and filtering by an active carbon filter, so that the treated tail gas can meet the requirement of burning by a tubular furnace.
Description
Technical Field
The invention relates to the technical field of industrial tail gas purification treatment, in particular to a tail gas treatment process and a tail gas treatment system of a kettle type heating modified asphalt reaction kettle.
Background
About 50% -60% of asphalt is generally generated in the coal tar processing process, which belongs to a bulk product of tar processing, and the larger the processing scale is, the more the asphalt yield is. The modified asphalt is the main downstream product of the existing asphalt and is mainly used for producing prebaked anodes in the electrolytic aluminum industry to prepare battery rods or electrode binders.
At present, the domestic modified asphalt production process mostly adopts a thermal polycondensation method, which can be divided into a kettle type heating method and a tube furnace heating method according to the heating mode.
The production process of modified asphalt by kettle type heating method uses medium temperature asphalt as raw material, and uses heating furnace to directly heat the external surface of reaction kettle, and the reaction kettle interior can be controlled by means of a certain reaction residence time and proper reaction temperature so as to attain the goal of modifying asphalt. As the heating surface is the outer surface of the reaction kettle, in order to achieve good mass and heat transfer effects, a stirrer needs to be arranged in the reaction kettle, so that the volume in the reaction kettle is limited, and the design production capacity is limited, so that the subsequent tubular furnace heating method is provided.
The production process of modified asphalt by kettle-type heating method is characterized by that it is an old process, and basically adopts normal-pressure operation, and the tail gas of modified asphalt reaction kettle, tail gas of modified asphalt high-level tank and tail gas of asphalt forming are combined, and fed into an exhaust cleaning tower, cleaned by washing oil and discharged into atmosphere.
Because the purification capacity of the exhaust cleaning method is limited, the exhaust gas after the exhaust cleaning tower is directly discharged into the atmosphere, the current environmental protection requirement cannot be met, and the existing exhaust gas system needs to be upgraded and modified. In the existing transformation scheme, the cleaned tail gas basically adopts an incineration mode so as to improve the operation environment of workers and meet the requirement of environmental protection; the tail gas of the tar production device is basically all condensable gas, after being cleaned by an exhaust cleaning method, although the tail gas can not meet the requirement of environmental protection, combustible components are basically absorbed by washing oil, and the main component of the tail gas is air which can be directly sent to a tubular furnace to be burnt; only the tail gas of the modified asphalt reaction kettle is special, and the modified asphalt reaction kettle and the tail gas cannot be sent into a tubular furnace together with other tail gas for incineration treatment.
The tail gas of the modified asphalt reaction kettle in the kettle type heating method has the following characteristics:
1) the main components of the asphalt are micromolecules such as hydrogen, methane, water and the like generated in the thermal polycondensation process of aromatic hydrocarbon molecules in asphalt, and the asphalt contains a large amount of fogdrops such as carbon cyclic hydrocarbon, cyclic hydrocarbon derivatives and the like, wherein a plurality of polycyclic aromatic hydrocarbon substances such as benzopyrene, benzanthracene, carbazole and the like are most carcinogenic and strong carcinogenic substances; the tail gas of the modified asphalt reaction kettle belongs to non-condensable combustible gas containing certain condensable components, and after being mixed with other tail gas containing a large amount of air, the tail gas has the probability of generating explosive mixtures, so the tail gas cannot be mixed with other tail gas for incineration;
2) because the production process of the modified asphalt by the kettle type heating method belongs to normal pressure operation, the flow of tail gas is small, the pressure is low (only about 1 kPa), the direct combustion is unsafe, and the tempering phenomenon is easy to generate;
3) the tail gas of the modified asphalt reaction kettle is accompanied with a large amount of fog drops, and the direct combustion can block a combustion nozzle of the tubular furnace.
In summary, if the tail gas of the modified asphalt reactor in the kettle-type heating method is treated by incineration, the tail gas needs to be pretreated by a specific process so as to reach the incineration condition.
Disclosure of Invention
The invention provides a tail gas treatment process and a tail gas treatment system of a kettle type heating modified asphalt reaction kettle, which remove condensable gas components in the tail gas through deep cooling, gas-liquid separation and filtration of an active carbon filter, so that the treated tail gas can meet the requirement of incineration through a tubular furnace.
In order to achieve the purpose, the invention adopts the following technical scheme:
the tail gas of the modified asphalt reaction kettle is pumped from a flash oil tank to a tail gas cooler for low-temperature cooling, the condensable gas component remained in the tail gas is cooled into liquid, and the cooled gas-liquid mixture is separated into liquid component through a gas-liquid separator; the separated non-condensable combustible gas is subjected to pressure boosting by a tail gas fan and then is divided into two paths, and one path of the non-condensable combustible gas is returned to a flash oil tank and used for stabilizing the system pressure at the upstream of the tail gas fan; and the other path is sent to an activated carbon filter to remove fog drops, and the obtained pure non-condensable combustible gas passes through a safe water seal tank and then is mixed into a gas pipeline at the upstream of the tubular furnace, and is sent to the tubular furnace together with the gas for incineration.
And the tail gas cooler is used for carrying out low-temperature cooling on the tail gas by adopting low-temperature water at the temperature of 16-20 ℃.
The middle part of the gas-liquid separator is provided with a clapboard which divides the inner space of the gas-liquid separator into a first chamber and a second chamber; the gas-liquid mixture of the tail gas after the low-temperature cooling firstly enters a first chamber of a gas-liquid separator for gas-liquid separation, the separated liquid falls to the bottom of the first chamber, the separated gas is sucked out from the gas-liquid separator from the top, and the gas enters a second chamber after fog drops are removed by a mist catcher and a cyclone separator; the separated fog drops are carried downwards into a second chamber of the gas-liquid separator by the gas flow, and gas-liquid separation is carried out again in the second chamber; the separated liquid falls to the bottom of the second chamber, and the separated gas is sent to the tail gas fan through a central pipeline in the cyclone separator.
And a pressure recording and adjusting alarm instrument is arranged on the flash oil tank, and the tail gas quantity entering the flash oil tank is adjusted according to the pressure recording and adjusting alarm instrument.
The tail gas treatment system of the kettle type heating method modified asphalt reaction kettle for realizing the process comprises a flash oil tank, a tail gas cooler, a gas-liquid separator, a mist catcher, a cyclone separator, a tail gas fan, an active carbon filter, a safe water seal tank and a tubular furnace; the flash oil tank is provided with a tail gas outlet which is connected with an inlet of a tail gas cooler; the middle part of the gas-liquid separator is provided with a clapboard which divides the inner space of the gas-liquid separator into a first chamber and a second chamber; the top of the first chamber is provided with a tail gas inlet and a separated gas outlet, and the top of the second chamber is provided with a cyclone separator; a tail gas inlet on the first chamber is connected with an outlet of the tail gas cooler, a separated gas outlet is connected with an inlet of the mist catcher, and an outlet of the mist catcher is connected with an inlet of the cyclone separator; the middle part of the cyclone separator is provided with a central pipeline, the lower end of the central pipeline is communicated with the second chamber of the gas-liquid separator, the upper end of the central pipeline is sequentially connected with a tail gas fan, an activated carbon filter and a safe water seal tank through a tail gas pipeline, the tubular furnace is provided with a gas inlet which is connected with the gas pipeline, and the safe water seal tank is connected with the gas pipeline through a combustible gas pipeline.
The top of the flash oil tank is also provided with a pressure recording and adjusting alarm instrument and a tail gas returning inlet; a tail gas outlet is arranged on a tail gas pipeline between the tail gas fan and the activated carbon filter and is connected with a returned tail gas inlet on the flash evaporation oil tank through a tail gas returning pipeline; the tail gas returning pipeline is sequentially provided with a first diffused gas outlet, a pressure regulating valve, a nitrogen inlet and a second diffused gas outlet along the flow direction of the tail gas, wherein the nitrogen inlet is connected with the nitrogen pipeline, and the nitrogen pipeline is provided with a self-standing regulating valve I; the first diffused air outlet is connected with the high-altitude diffusing device through a first diffused air pipeline, the second diffused air outlet is connected with the high-altitude diffusing device through a second diffused air pipeline, a safety valve is arranged on the first diffused air pipeline, and an electromagnetic valve is arranged on the second diffused air pipeline; and the pressure recording and adjusting alarm instrument on the flash oil tank is controlled by interlocking with the pressure adjusting valve and the electromagnetic valve.
And a self-standing regulating valve II is arranged on the combustible gas pipeline.
Compared with the prior art, the invention has the beneficial effects that:
1) and (3) condensing and cooling steam generated in the thermal polycondensation process of the modified asphalt reaction kettle, and then sending the steam to a flash oil tank for gas-liquid separation, wherein the separated gas is the tail gas of the modified asphalt reaction kettle to be treated. The condensable gas components in the tail gas are removed through deep cooling, gas-liquid separation and filtering by an active carbon filter, and the condensable gas components contain strong carcinogens such as benzopyrene and the like and are decomposed at the temperature of over 1000 ℃, while the hearth temperature of a common tubular furnace is 800 ℃ and can not reach the decomposition temperature, so the strong carcinogens such as benzopyrene and the like must be removed before the tail gas is sent to the common tubular furnace for incineration; the treated tail gas is merged into a gas pipeline and is directly sent to a common tubular furnace for incineration treatment.
2) The tail gas cooler is cooled by low-temperature water, and compared with normal-temperature circulating water cooling, the condensable gas components in the tail gas can be more effectively reduced;
3) the gas-liquid separator with the partition plate is adopted, two-stage gas-liquid separation can be realized through the assistance of the mist catcher and the cyclone separator, and the gas-liquid separation effect is good;
4) the tail gas fan is additionally arranged to provide power, so that smooth realization of a gas-liquid separation process can be ensured, and pressure is provided for the purified tail gas to be finally merged into a gas pipeline;
5) an activated carbon filter is additionally arranged behind the tail gas fan and used for finally removing fog drops in the tail gas and removing strong carcinogens such as benzopyrene and the like to obtain pure non-condensable combustible gas, so that the phenomenon that the gas pipeline and a nozzle are blocked after the tail gas is merged into the gas pipeline is avoided.
6) The tail gas after purification passes through the safe water seal groove before being merged into the gas pipeline, so as to ensure that the gas cannot flow back into the tail gas treatment system, and eliminate potential safety hazards.
7) One part of tail gas after the tail gas fan is boosted returns to the flash oil tank, and a pressure regulating valve is arranged on a corresponding tail gas returning pipeline, so that the stable operation of stabilizing the pressure of the flash oil tank and ensuring a process system can be realized.
8) The return tail gas pipeline leading to the flash oil tank is additionally connected with a nitrogen pipeline, so that nitrogen can be supplemented under the condition of pressure regulation failure, and the effects of protecting and stabilizing the system pressure are achieved.
9) Through setting up solenoid valve and high altitude diffusion equipment, when tail gas fan shut down because of the trouble, can play the guard action to the system.
10) A self-standing regulating valve II is arranged on the tail gas pipeline before the tail gas pipeline is merged into the gas pipeline, so that the system pressure behind the tail gas fan can be stabilized, and the stability of the system pressure in front of the tail gas fan is further ensured; the pressure of the second self-supporting regulating valve is higher than the pressure of the coal gas, so that the coal gas cannot flow back into the tail gas pipeline.
11) By providing a safety valve, overpressure protection can be performed as soon as the self-standing regulating valve is closed due to failure.
Drawings
FIG. 1 is a schematic structural diagram of a tail gas treatment system of a kettle-type heating asphalt-modifying reaction kettle.
In the figure: 1. the flash oil tank 2, the tail gas cooler 3, the gas-liquid separator 4, the mist catcher 5, the cyclone separator 6, the tail gas fan 7, the activated carbon filter 8, the safe water seal tank 9, the tubular furnace 10, the pressure regulating valve 11, the self-standing regulating valve I12, the electromagnetic valve 13, the self-standing regulating valve II 14, the safety valve 15, the clapboard PRCA01, the pressure recording and regulating alarm instrument
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1, in the tail gas treatment process of the kettle-type heating modified asphalt reactor, tail gas of the modified asphalt reactor is pumped from a flash oil tank 1 to a tail gas cooler 2 for cryogenic cooling, condensable gas components remaining in the tail gas are cooled to be liquid, and a cooled gas-liquid mixture is separated into liquid components through a gas-liquid separator 3; the separated non-condensable combustible gas is subjected to pressure boosting through a tail gas fan 6 and then is divided into two paths, wherein one path of the non-condensable combustible gas is returned to a flash oil tank 1 and is used for stabilizing the system pressure at the upstream of the tail gas fan 6; the other path is sent to an active carbon filter 7 to remove fog drops, and the obtained pure non-condensable combustible gas passes through a safe water seal tank 8 and then is mixed into a gas pipeline at the upstream of the tubular furnace 9, and is sent to the tubular furnace 9 together with the gas for incineration.
And the tail gas cooler 2 is used for carrying out low-temperature cooling on the tail gas by adopting low-temperature water at the temperature of 16-20 ℃.
The middle part of the gas-liquid separator 3 is provided with a clapboard 15 which divides the inner space into a first chamber and a second chamber; the gas-liquid mixture of the tail gas after the low-temperature cooling firstly enters a first chamber of a gas-liquid separator 3 for gas-liquid separation, the separated liquid falls to the bottom of the first chamber, the separated gas is sucked out from the gas-liquid separator 3 from the top, and the gas enters a second chamber after fog drops are removed by a mist catcher 4 and a cyclone separator 5; the separated mist droplets are carried down into the second chamber of the gas-liquid separator 3 by the gas flow, and gas-liquid separation is performed again in the second chamber; the separated liquid falls to the bottom of the second chamber and the separated gas is sent to the tail gas fan 6 through a central duct in the cyclone 5.
And a pressure recording and adjusting alarm instrument PRCA01 is arranged on the flash oil tank 1, and the amount of tail gas entering the flash oil tank 1 is adjusted according to the pressure recording and adjusting alarm instrument PRCA01.
The tail gas treatment system of the kettle type heating method modified asphalt reaction kettle for realizing the process comprises a flash oil tank 1, a tail gas cooler 2, a gas-liquid separator 3, a mist catcher 4, a cyclone separator 5, a tail gas fan 6, an activated carbon filter 7, a safe water seal tank 8 and a tube furnace 9; the flash oil tank 1 is provided with a tail gas outlet which is connected with an inlet of the tail gas cooler 2; the middle part of the gas-liquid separator 3 is provided with a clapboard 15 to divide the inner space into a first chamber and a second chamber; the top of the first chamber is provided with a tail gas inlet and a separated gas outlet, and the top of the second chamber is provided with a cyclone separator 5; a tail gas inlet on the first chamber is connected with an outlet of the tail gas cooler 2, a separated gas outlet is connected with an inlet of a mist catcher 4, and an outlet of the mist catcher 4 is connected with an inlet of a cyclone separator 5; the middle part of the cyclone separator 5 is provided with a central pipeline, the lower end of the central pipeline is communicated with the second chamber of the gas-liquid separator 3, the upper end of the central pipeline is sequentially connected with a tail gas fan 6, an active carbon filter 7 and a safe water seal groove 8 through a tail gas pipeline, the tubular furnace 9 is provided with a gas inlet which is connected with the gas pipeline, and the safe water seal groove 8 is connected with the gas pipeline through a combustible gas pipeline.
The top of the flash oil tank 1 is also provided with a pressure recording and adjusting alarm instrument PRCA01 and a tail gas returning inlet; a tail gas outlet is arranged on a tail gas pipeline between the tail gas fan 6 and the activated carbon filter 7 and is connected with a returned tail gas inlet on the flash evaporation oil tank 1 through a tail gas returning pipeline; the tail gas returning pipeline is sequentially provided with a first diffused gas outlet, a pressure regulating valve 10, a nitrogen inlet and a second diffused gas outlet along the flow direction of the tail gas, wherein the nitrogen inlet is connected with the nitrogen pipeline, and the nitrogen pipeline is provided with a self-standing regulating valve I11; the first diffused air outlet is connected with the high-altitude diffusing device through a first diffused air pipeline, the second diffused air outlet is connected with the high-altitude diffusing device through a second diffused air pipeline, a safety valve 14 is arranged on the first diffused air pipeline, and an electromagnetic valve 12 is arranged on the second diffused air pipeline; and the pressure recording and adjusting alarm instrument PRCA01 on the flash oil tank 1 is controlled by interlocking with the pressure adjusting valve 10 and the electromagnetic valve 12.
And a second self-standing regulating valve 13 is arranged on the combustible gas pipeline.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The tail gas treatment process of the kettle type heating modified asphalt reaction kettle is characterized in that the tail gas of the modified asphalt reaction kettle is pumped from a flash oil tank to a tail gas cooler for low-temperature cooling, the condensable gas component remained in the tail gas is cooled into a liquid state, and the cooled gas-liquid mixture is separated into a liquid component through a gas-liquid separator; the separated non-condensable combustible gas is subjected to pressure boosting by a tail gas fan and then is divided into two paths, and one path of the non-condensable combustible gas is returned to a flash oil tank and used for stabilizing the system pressure at the upstream of the tail gas fan; and the other path is sent to an activated carbon filter to remove fog drops, and the obtained pure non-condensable combustible gas passes through a safe water seal tank and then is mixed into a gas pipeline at the upstream of the tubular furnace, and is sent to the tubular furnace together with the gas for incineration.
2. The tail gas treatment process for the kettle-type heating asphalt-modifying reaction kettle according to claim 1, wherein the tail gas cooler is used for carrying out low-temperature cooling on the tail gas by using low-temperature water at 16-20 ℃.
3. The tail gas treatment process for the kettle-type heating asphalt-modifying reaction kettle according to claim 1, wherein a partition plate is arranged in the middle of the gas-liquid separator to divide the inner space of the gas-liquid separator into a first chamber and a second chamber; the gas-liquid mixture of the tail gas after the low-temperature cooling firstly enters a first chamber of a gas-liquid separator for gas-liquid separation, the separated liquid falls to the bottom of the first chamber, the separated gas is sucked out from the gas-liquid separator from the top, and the gas enters a second chamber after fog drops are removed by a mist catcher and a cyclone separator; the separated fog drops are carried downwards into a second chamber of the gas-liquid separator by the gas flow, and gas-liquid separation is carried out again in the second chamber; the separated liquid falls to the bottom of the second chamber, and the separated gas is sent to the tail gas fan through a central pipeline in the cyclone separator.
4. The tail gas treatment process for the kettle-type heating asphalt-modifying reaction kettle according to claim 1, wherein a pressure recording and adjusting alarm instrument is arranged on the flash oil tank, and the tail gas amount entering the flash oil tank is adjusted by the pressure recording and adjusting alarm instrument.
5. The tail gas treatment system of the kettle type heating asphalt-modifying reaction kettle for realizing the process according to any one of claims 1 to 4 is characterized by comprising a flash oil tank, a tail gas cooler, a gas-liquid separator, a mist catcher, a cyclone separator, a tail gas fan, an activated carbon filter, a safe water seal tank and a tubular furnace; the flash oil tank is provided with a tail gas outlet which is connected with an inlet of a tail gas cooler; the middle part of the gas-liquid separator is provided with a clapboard which divides the inner space of the gas-liquid separator into a first chamber and a second chamber; the top of the first chamber is provided with a tail gas inlet and a separated gas outlet, and the top of the second chamber is provided with a cyclone separator; a tail gas inlet on the first chamber is connected with an outlet of the tail gas cooler, a separated gas outlet is connected with an inlet of the mist catcher, and an outlet of the mist catcher is connected with an inlet of the cyclone separator; the middle part of the cyclone separator is provided with a central pipeline, the lower end of the central pipeline is communicated with the second chamber of the gas-liquid separator, the upper end of the central pipeline is sequentially connected with a tail gas fan, an activated carbon filter and a safe water seal tank through a tail gas pipeline, the tubular furnace is provided with a gas inlet which is connected with the gas pipeline, and the safe water seal tank is connected with the gas pipeline through a combustible gas pipeline.
6. The tail gas treatment system of the kettle-type heating asphalt-modifying reaction kettle according to claim 5, wherein the top of the flash oil tank is further provided with a pressure recording and adjusting alarm instrument and a tail gas returning inlet; a tail gas outlet is arranged on a tail gas pipeline between the tail gas fan and the activated carbon filter and is connected with a returned tail gas inlet on the flash evaporation oil tank through a tail gas returning pipeline; the tail gas returning pipeline is sequentially provided with a first diffused gas outlet, a pressure regulating valve, a nitrogen inlet and a second diffused gas outlet along the flow direction of the tail gas, wherein the nitrogen inlet is connected with the nitrogen pipeline, and the nitrogen pipeline is provided with a self-standing regulating valve I; the first diffused air outlet is connected with the high-altitude diffusing device through a first diffused air pipeline, the second diffused air outlet is connected with the high-altitude diffusing device through a second diffused air pipeline, a safety valve is arranged on the first diffused air pipeline, and an electromagnetic valve is arranged on the second diffused air pipeline; and the pressure recording and adjusting alarm instrument on the flash oil tank is controlled by interlocking with the pressure adjusting valve and the electromagnetic valve.
7. The system for treating the tail gas of the kettle-type heating asphalt-modifying reaction kettle according to claim 5, wherein a second self-supporting regulating valve is arranged on the combustible gas pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919943.XA CN111957165B (en) | 2020-09-04 | 2020-09-04 | Tail gas treatment process and system of kettle type heating modified asphalt reaction kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010919943.XA CN111957165B (en) | 2020-09-04 | 2020-09-04 | Tail gas treatment process and system of kettle type heating modified asphalt reaction kettle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111957165A true CN111957165A (en) | 2020-11-20 |
| CN111957165B CN111957165B (en) | 2024-06-11 |
Family
ID=73391945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010919943.XA Active CN111957165B (en) | 2020-09-04 | 2020-09-04 | Tail gas treatment process and system of kettle type heating modified asphalt reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111957165B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484055A (en) * | 2020-12-28 | 2021-03-12 | 四川省环保科技工程有限责任公司 | Boiler incineration treatment method and system for tail gas generated in glue making of artificial boards |
| CN114602266A (en) * | 2022-03-04 | 2022-06-10 | 中冶焦耐(大连)工程技术有限公司 | Temporary direct-discharge treatment system and process for tail gas of tar distillation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007043966A1 (en) * | 2005-10-10 | 2007-04-19 | Ilmeg Products Ab | System and method for cleaning of asphalt gas |
| CN205361039U (en) * | 2016-01-30 | 2016-07-06 | 山东大山路桥工程有限公司 | Modified for technology pitch smoke treatment device of pitch |
| CN107281868A (en) * | 2016-04-01 | 2017-10-24 | 中弘环境工程（北京）有限公司 | Bitumen flue gas processing method and equipment |
| CN108273361A (en) * | 2018-02-01 | 2018-07-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of glance coal tail gas safe burning process |
| CN212492204U (en) * | 2020-09-04 | 2021-02-09 | 中冶焦耐(大连)工程技术有限公司 | Tail gas treatment system of kettle type heating method modified asphalt reaction kettle |
-
2020
- 2020-09-04 CN CN202010919943.XA patent/CN111957165B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007043966A1 (en) * | 2005-10-10 | 2007-04-19 | Ilmeg Products Ab | System and method for cleaning of asphalt gas |
| CN205361039U (en) * | 2016-01-30 | 2016-07-06 | 山东大山路桥工程有限公司 | Modified for technology pitch smoke treatment device of pitch |
| CN107281868A (en) * | 2016-04-01 | 2017-10-24 | 中弘环境工程（北京）有限公司 | Bitumen flue gas processing method and equipment |
| CN108273361A (en) * | 2018-02-01 | 2018-07-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of glance coal tail gas safe burning process |
| CN212492204U (en) * | 2020-09-04 | 2021-02-09 | 中冶焦耐(大连)工程技术有限公司 | Tail gas treatment system of kettle type heating method modified asphalt reaction kettle |
Non-Patent Citations (1)
| Title |
|---|
| 关伟;陈忠林;张炜晨;刘能;: "沥青烟治理现状及工艺路径分析", 辽宁大学学报(自然科学版), no. 04, 15 November 2016 (2016-11-15), pages 374 - 380 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484055A (en) * | 2020-12-28 | 2021-03-12 | 四川省环保科技工程有限责任公司 | Boiler incineration treatment method and system for tail gas generated in glue making of artificial boards |
| CN114602266A (en) * | 2022-03-04 | 2022-06-10 | 中冶焦耐(大连)工程技术有限公司 | Temporary direct-discharge treatment system and process for tail gas of tar distillation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111957165B (en) | 2024-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7455828B2 (en) | Process and apparatus for converting hydrogen sulfide into hydrogen and sulfur | |
| CN111957165B (en) | Tail gas treatment process and system of kettle type heating modified asphalt reaction kettle | |
| CN104593037B (en) | A kind of method of combined type coal hydrogenation oil refining reactor and oil refining | |
| CN112938900B (en) | Preparation method and preparation device of hydrobromic acid | |
| CN212492204U (en) | Tail gas treatment system of kettle type heating method modified asphalt reaction kettle | |
| CN108298505A (en) | Processing contains H2The process integration of S sour gas while extracting sulfuric acid and sulphur | |
| CN110872205A (en) | Method for preparing acetylene by partial oxidation of natural gas | |
| US9290384B2 (en) | Process for preparing acetylene and synthesis gas | |
| CN111996049A (en) | Device and method for removing acid gas in natural gas by combining hydrate method and membrane separation method | |
| CN108383139A (en) | The process units and method of ammonium hydrogen carbonate | |
| RU2631431C2 (en) | Method for producing acetylene and synthesis gas | |
| CN109082288B (en) | Biomass tar combustion system and method | |
| CN109319736B (en) | Ammonia tank purge gas recovery device and process thereof | |
| RU2510640C1 (en) | Method for treatment of oil containing hydrogen sulfide and mercaptan | |
| DK174246B1 (en) | Process and apparatus for converting pollutants and waste materials into non-polluting energy and useful products | |
| RU2544993C1 (en) | Method of removing hydrogen sulphide from decomposition gases from apparatus for atmospheric-vacuum or vacuum distillation of oil | |
| GB809888A (en) | Improvements in the purification of cracking gases | |
| RU2637708C2 (en) | Method of producing acetylene and synthesis gas | |
| CN104876190A (en) | Oxygen-enriched combustion-supporting waste acid cracking process | |
| US9580312B2 (en) | Method for producing acetylenes and syngas | |
| CN108261883B (en) | Method for treating silane tail gas containing chlorosilane | |
| RO126941B1 (en) | Process and installation for thermally plasma treating a gaseous mixture | |
| CN102826518B (en) | Concentrated waste acid recovery technology | |
| RU2616919C1 (en) | Unit of complex non-waste gas treatment with methanol production | |
| CN115210382A (en) | Method and apparatus for producing organic substance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |