CN213139974U

CN213139974U - Asphalt storage tank top gas treatment system

Info

Publication number: CN213139974U
Application number: CN202020893571.3U
Authority: CN
Inventors: 张银伟; 李阳; 崔松波; 高敏; 盛亚龙
Original assignee: Luoyang Petrochemical Engineering Design Co ltd
Current assignee: Luoyang Petrochemical Engineering Design Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-05-07
Anticipated expiration: 2030-05-25

Abstract

A top gas treatment system for an asphalt storage tank relates to the technical field of top gas purification of asphalt tanks, and comprises an asphalt storage tank assembly, an asphalt gas water mist purification assembly, a liquid separation tank assembly and an asphalt booster fan assembly, wherein the three asphalt storage tank assemblies are all connected with a 40-PW007 fresh water pipe, asphalt fog particles or oil mist in tail gas is separated through a T4011 asphalt gas water mist purification tower, and part of water-soluble pollutants are removed, the temperature of the tail gas is reduced, the tail gas is sealed through a V4011A water-sealed tank and a V4011B water-sealed tank, so that the sealing effect is achieved, the overpressure safety of the storage tanks is protected, a breather valve and an outlet constant-pressure cut-off valve can be replaced, the blockage is prevented, the operation energy consumption is low, the maintenance amount is small, the system is simple, emission indexes can be effectively controlled, nitrogen protection is arranged on pipelines of the asphalt storage tank, a combustible gas detector is also installed, the combustible gas concentration, to eliminate the explosive conditions of the combustible gas.

Description

Asphalt storage tank top gas treatment system

Technical Field

The utility model belongs to the technical field of the gas purification technique of pitch tank deck and specifically relates to a pitch holding vessel top gas treatment system is related to.

Background

With the deep promotion of industrialization and urbanization in China, the economy rapidly develops and the energy consumption rapidly rises, and the petroleum resource consumption in China increases year by year. A large amount of oil gas volatilization exists in the processes of storage, transportation and production of oil products, great loss is brought to oil gas resources, environmental pollution is caused to a great extent, and the atmosphere pollution prevention pressure is continuously increased. Asphalt is a byproduct of petroleum extraction, has good performances of cohesiveness, insulativity, heat insulation, moisture resistance, seepage resistance, water resistance, corrosion resistance, rust resistance and the like, and is widely applied to various industries such as roads, buildings, agriculture, water conservancy, electricity and the like.

The storage temperature of the asphalt component or the finished asphalt product is about 160 ℃, the odor around the storage tank is large when the asphalt is stored, the environment is polluted, and the volatilized petroleum asphalt smoke and benzopyrene have irritation and carcinogenicity and seriously affect the body health of staff. Because the asphalt flue gas contains a large amount of dust oil drop particles, the dust oil drop particles are easy to adhere to the inner surfaces of pipelines and equipment and are easy to block, the treatment difficulty of the top gas of the asphalt storage tank is higher, at present, no mature collection treatment technology exists at home and abroad, most asphalt storage tanks are open-type storage, great harm is brought to the environment treatment work, and meanwhile, the gas concentration is not controlled, so that danger is easy to occur. Therefore, it is necessary to develop a set of technology for treating the top gas of the asphalt storage tank.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough among the background art, the utility model discloses an asphalt storage tank top gas treatment system, the utility model discloses can collect asphalt storage tank discharge gas effectively, discharge up to standard after handling through the system, avoid the pipeline to block up, easily operation, a large amount of vapor, asphaltene etc. in the in-process absorption asphalt gas, the system sets up nitrogen protection, detects combustible gas content to eliminate the explosion gas forming condition, ensure the normal operating of asphalt storage tank top gas treatment system.

In order to realize the utility model aims at, the utility model adopts the following technical scheme:

an asphalt storage tank top gas treatment system comprises an asphalt storage tank assembly, an asphalt gas water mist purification assembly, a liquid separation tank assembly and an asphalt booster fan assembly, wherein the three asphalt storage tank assemblies are all connected with a 40-PW007 fresh water pipe, the first asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW001 fresh water pipe and a 25-PW002 fresh water pipe, the second asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW003 fresh water pipe and a 25-PW004 fresh water pipe, the third asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW005 fresh water pipe and a 25-PW006 fresh water pipe, the first asphalt storage tank assembly is connected with a 150-P010 asphalt gas pipe through a 150-P003 asphalt gas pipe, the second asphalt storage tank assembly is connected with the 150-P010 asphalt gas pipe through a 150-P006 asphalt gas pipe, the third pitch storage tank assembly passes through 150-P009 pitch trachea and connects 150-P010 pitch trachea, 150-P010 pitch trachea with pitch gas water smoke purifies the assembly and connects, pitch gas water smoke purifies the assembly and connects through 150-P011 knockout drum assembly, pitch gas water smoke purifies the assembly and connects outside fresh water main pipe through 40-PW007 fresh water pipe, the knockout drum assembly passes through 150-P012 and connects pitch booster fan assembly, pitch gas water smoke purifies the assembly with the knockout drum assembly passes through 80-OD008 oily sewage union coupling funnel, pitch booster fan assembly is connected with outside pitch stove air-blower and outside pitch stove respectively.

The asphalt storage tank assembly comprises a T4034/5 asphalt storage tank, a V4011A water-sealed tank and a V4011B water-sealed tank, wherein a bidirectional port of the T4034/5 asphalt storage tank is connected with a bidirectional port above the V4011B water-sealed tank through a 150-P001 asphalt air pipe, a left input port of the V4011B water-sealed tank is connected with the 40-PW007 fresh water pipe through the 25-PW001 fresh water pipe, right and lower output ports of the V4011B water-sealed tank are both connected with a 25-OD001 oily sewage pipe, the 25-001 OD oily sewage pipe is connected with a funnel, the V4011B water-sealed tank is further connected with one end of two DN150 pipes respectively, a PT4015 pressure transmitter, a PG4015 pressure meter and a TE4015 temperature detection element are installed at the bidirectional port of the T4034/5 asphalt storage tank respectively, a DN25 gate valve is installed at the left side of the V564017 water-sealed tank, a DN 35 40 gate valve is installed at the lower side outlet of the V4011 water-sealed tank, the output port of the T4034/5 asphalt storage tank is connected with the upper side input port of the V4011A water-sealed tank through a 150-P002 asphalt air pipe, the 150-P002 asphalt air pipe is connected with a D20 nitrogen gas pipeline, two DN20 gate valves and a DN20 pore plate are respectively installed on the DN20 pipeline, the DN20 pore plate is positioned between the two DN20 gate valves, the left side input port of the V4011A water-sealed tank is connected with the 40-PW007 fresh water pipe through the 25-PW002 fresh water pipe, the lower side output port and the right lower side output port of the V4011A water-sealed tank are both connected with another funnel, the upper right side output port of the V4011A water-sealed tank is connected with one end of a DN150 flame arrester, the other end of the DN150 is connected with a 150-P003 asphalt air pipe, the DN 4011A water-sealed tank at the V4011 inlet is provided with the DN25 gate valve, the lower side output valve at the V401 4011A water-sealed tank is provided with the DN40 gate valve, DN150 gate valves are installed at two ends of the DN150 flame arrester, and two ends of the DN150 flame arrester are connected through the other DN150 gate valves.

Asphalt gas water smoke purification assembly includes T4011 pitch gas water smoke purification tower, install TG4011 thermometer on the T4011 pitch gas water smoke purification tower, T4011 pitch gas water smoke purification tower passes through pipe connection LG4011 liquid level table, the below delivery outlet of T4011 pitch gas water smoke purification tower is connected 80-OD008 oily sewage pipe, T4011 pitch gas water smoke purification tower top delivery outlet is connected respectively 150-P011 pitch trachea with 150-P010 pitch trachea, the right side input port of T4011 pitch gas water smoke purification tower is connected 150-P010 pitch trachea, 40-PW007 fresh water union coupling 40-PW008 fresh water pipe respectively with two left input ports of T4011 pitch gas water smoke purification tower are connected, install DN40 formula valve on the 40-PW 4011 pitch gas water pipe, two left defeated water of T4011 pitch gas water smoke purification tower are defeated and are installed floodgate 40 formula valve, install DN150 floodgate formula valve in the upside delivery outlet department of T4011 asphalt gas water fog purification tower, the downside delivery outlet department of T4011 asphalt gas water fog purification tower installs DN80 floodgate formula valve, install the right side input entry department of T4011 asphalt gas water fog purification tower DN150 floodgate formula valve, install two on the 150-P010 asphalt gas pipe DN150 floodgate formula valve, install TE4012 temperature detecting element and PT4012 pressure transmitter on the 150-P010 asphalt gas pipe.

The liquid separating tank assembly comprises a V4014 liquid separating tank, an LG4014 liquid level meter is mounted on the V4014 liquid separating tank, the V4014 liquid separating tank is connected with an LT4014 liquid level transmitter through a pipeline, the V4014 liquid separating tank is also respectively provided with a PT4014 pressure transmitter, a PG4014 pressure gauge, a TE4014 temperature detecting element and a TG4014 temperature meter, an upper output port of the V4014 liquid separation tank is respectively connected with the 150-P012 asphalt gas pipe and the 150-P011 asphalt gas pipe, the lower output port of the V4014 liquid separation tank is respectively connected with a funnel and the 80-OD008 oily sewage pipe, the input port of the V4014 liquid separation tank is connected with the 150-P011 asphalt gas pipe, a DN150 gate valve is arranged on the 150-P011 asphalt gas pipe, the DN150 gate valve is arranged at the input port of the V4014 liquid separation tank, DN40 gate type valve is installed at the below delivery outlet of V4014 liquid separation jar, V4014 liquid separation jar top still respectively with DN100 gate type valve with DN40 gate type valve is connected.

Pitch booster fan assembly includes C103 pitch booster fan, the one end of DN100 check valve is connected to C103 pitch booster fan's air outlet, the one end of 100-P013 pitch trachea is connected to the other end of DN100 check valve, the one end of spark arrester is connected to the tracheal other end of 100-P013 pitch, the other end of spark arrester is connected respectively outside pitch stove air-blower with outside pitch stove, the one end of basket filter is connected to C103 pitch booster fan's air intake, the other end of basket filter is connected 150-P012 pitch trachea, PT4018 pressure transmitter, TE4018 temperature detecting element, PG4018 pressure table and 401TG 8 thermometer are installed in proper order to C103 pitch booster fan's air outlet department, basket filter with install 401PT 3 pressure transmitter, PG4013 pressure table between the pitch trachea 150-P012 respectively, TG4013 thermometer and TE4013 temperature detect element, the basket filter with install DN150 floodgate formula valve between the pitch trachea of 150-P012, DN100 check valve with install DN100 floodgate formula valve between the pitch trachea of 100-P013, the flame arrester with the one end that 100-P013 pitch trachea is connected is installed DN100 floodgate formula valve, two are installed in proper order to the other end of flame arrester DN150 floodgate formula valve, the both ends of flame arrester are passed through DN100 floodgate formula valve and are connected.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

the utility model discloses an asphalt storage tank top gas treatment system, can deviate from the pitch class fog grain or the oil mist that contains in the tail gas through T4011 asphalt gas water mist purifying tower, and partial water-soluble pollutant, reduce the tail gas temperature simultaneously, can realize the exhalation and the function of breathing in through T4034/5 asphalt storage tank cooperation V4011A water-sealed jar and V4011B water-sealed jar, on the one hand, play sealed effect to the T4034/5 asphalt storage tank that carries out oil gas treatment, on the other hand, the protection storage tank superpressure safety, the tank top gas is carried outside asphalt furnace through C103 pitch gas booster fan after asphalt gas water mist purification assembly adsorbs in advance after being collected by T4034/5 asphalt storage tank and is burnt, the operation energy consumption is low, the maintenance volume is little, the system is simple, can effectual control emission index, adopt V4011A water-sealed jar and V4011B water-sealed jar to replace breather valve and export constant pressure trip valve, prevent to block up, the pipeline of the asphalt storage tank is provided with nitrogen protection, and meanwhile, combustible gas detection instruments are arranged at the outlet and the inlet of the C103 asphalt gas booster fan, so that the concentration of combustible gas in the T4034/5 asphalt storage tank and in an external asphalt furnace is monitored, and the content of the recovery system is controlled in the normal operation process, so that the explosion condition of the combustible gas is eliminated.

Drawings

FIG. 1 is a schematic view of the connection of the whole pipeline of the present invention;

FIG. 2 is a schematic view of the pipeline connection of the asphalt storage tank assembly of the present invention;

FIG. 3 is a schematic view of the pipe connection of the air mist purification assembly for asphalt of the present invention;

FIG. 4 is a schematic view of the pipe connection of the knockout drum assembly of the present invention;

fig. 5 is the pipeline connection schematic diagram of the asphalt booster fan assembly of the utility model.

Detailed Description

The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.

The top gas treatment system for the asphalt storage tank comprises an asphalt storage tank assembly, an asphalt gas water mist purification assembly, a liquid separation tank assembly and an asphalt booster fan assembly, wherein the three asphalt storage tank assemblies are all connected with a 40-PW007 fresh water pipe, the first asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW001 fresh water pipe and a 25-PW002 fresh water pipe, the second asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW003 fresh water pipe and a 25-PW004 fresh water pipe, the third asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW005 fresh water pipe and a 25-PW006 fresh water pipe, the first asphalt storage tank assembly is connected with a 150-P010 asphalt gas pipe through a 150-P003 asphalt gas pipe, the second pitch storage tank assembly passes through 150-P006 pitch trachea and connects 150-P010 pitch trachea, and the third pitch storage tank assembly passes through 150-P009 pitch trachea and connects 150-P010 pitch trachea, 150-P010 pitch trachea with pitch air water mist purifies the assembly and connects, pitch air water mist purifies the assembly and connects through 150-P011 divide the accumulator assembly, pitch air water mist purifies the assembly and connects outside fresh water main pipe through 40-PW007 fresh water pipe, divide the accumulator assembly to connect through 150-P012 pitch booster fan assembly, pitch air water mist purifies the assembly with divide the accumulator assembly to pass through 80-OD008 oily sewage pipe connection funnel, pitch booster fan assembly is connected with outside pitch stove and outside pitch stove respectively.

The liquid separating tank assembly comprises a V4014 liquid separating tank, an LG4014 liquid level meter is installed on the V4014 liquid separating tank, the V4014 liquid separating tank is connected with an LT4014 liquid level transmitter through a pipeline, the V4014 liquid separating tank is also provided with a PT4014 pressure transmitter, a PG4014 pressure meter, a TE4014 temperature detection element and a TG4014 temperature meter, the upper output port of the V4014 liquid separating tank is respectively connected with a 150-P012 asphalt gas pipe and a 150-P011 asphalt gas pipe, the lower output port of the V4014 liquid separating tank is respectively connected with a funnel and an 80-OD008 oily sewage pipe, the input port of the V4014 liquid separating tank is connected with a 150-P011 asphalt gas pipe, the DN150 gate valve is installed on the 150-P011 asphalt gas pipe, the DN150 gate valve is installed at the input port of the V4014 liquid separating tank, the DN40 gate valve is installed at the lower output port of the V4014 liquid separating tank, and the upper part of the V4014 liquid separating tank is also connected with the DN gate valve and the DN 35 40, the sewage liquid drops in the tail gas can be further separated, and the buffer function is achieved.

In the embodiment 1, when the asphalt storage tank top gas treatment system is used, asphalt gas is stored at the upper parts of three T4034/5 asphalt storage tanks, water in an external fresh water main pipe flows into a 40-PW007 fresh water pipe, and enters three V4011A water-sealed tanks through a 25-PW002 fresh water pipe, a 25-PW004 fresh water pipe and a 25-PW006 fresh water pipe respectively, water on the other hand enters three V4011B water-sealed tanks through a 25-PW001 fresh water pipe, a 25-PW003 fresh water pipe and a 25-PW004 fresh water pipe respectively, the V4011A water-sealed tanks and the V4011B water-sealed tanks seal the outlet of the T4034/5 asphalt storage tank, the overpressure safety of the T4034/5 asphalt storage tank is ensured, a DN150 flame arrester is installed in a matching mode, the asphalt storage tank assembly can be operated safely, a PT4015 pressure transmitter, a PG4015 pressure gauge and a TE4015 temperature detection element on the T4034/5 asphalt storage tank can detect the temperature parameters and the asphalt storage tank at the T4034/5 outlet, the asphalt gas in the three T4034/5 asphalt storage tanks is respectively gathered into a 150-P010 asphalt gas pipe through a 150-P003 asphalt gas pipe, a 150-P006 asphalt gas pipe and a 150-P009 asphalt gas pipe, then enters a T4011 asphalt gas water mist purification tower, simultaneously, water in a 40-PW007 fresh water pipe also enters the T4011 asphalt gas water mist purification tower through a 40-PW008 fresh water pipe, gas after being sprayed and cooled enters a V4014 liquid separation tank through a 150-P011 asphalt gas pipe, separating liquid drops in the gas, enabling the separated liquid drops to enter a C103 asphalt gas booster fan through a 150-P011 asphalt gas pipe, detecting the pressure and the temperature of the gas through a PT4013 pressure transmitter, a PG4013 pressure gauge, a TG4013 temperature gauge and a TE4013 temperature detection element in the process, and enabling the separated liquid drops to be discharged into a pipeline between an external asphalt furnace blower and an external asphalt furnace through a 100-P013 asphalt gas pipe after the separated liquid drops pass through the C103 asphalt gas booster fan.

The invention is not described in detail in the prior art, and although the invention has been specifically shown and described in connection with the preferred embodiments, the method and the way of implementing the technical solution are numerous, and only the preferred embodiments of the invention have been described above, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims, which are within the scope of the invention.

Claims

1. The utility model provides an asphalt storage tank headspace gas treatment system, includes asphalt storage tank assembly, asphalt gas water smoke purification assembly, knockout drum assembly and pitch booster fan assembly, its characterized in that: the three asphalt storage tank assemblies are all connected with a 40-PW007 fresh water pipe, the first asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW001 fresh water pipe and a 25-PW002 fresh water pipe, the second asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW003 fresh water pipe and a 25-PW004 fresh water pipe, the third asphalt storage tank assembly is respectively connected with the 40-PW007 fresh water pipe through a 25-PW005 fresh water pipe and a 25-PW006 fresh water pipe, the first asphalt storage tank assembly is connected with a 150-P010 asphalt gas pipe through a 150-P003 asphalt gas pipe, the second asphalt storage tank assembly is connected with the 150-P010 asphalt gas pipe through a 150-P006 asphalt gas pipe, and the third asphalt storage tank assembly is connected with the 150-P009 asphalt gas pipe through a 150-P009 asphalt gas pipe, the 150-P010 pitch trachea with pitch gas water smoke purifies the assembly and connects, pitch gas water smoke purifies the assembly and connects through 150-P011 the knockout drum assembly, pitch gas water smoke purifies the assembly and connects outside fresh water through 40-PW007 fresh water pipe and is responsible for, the knockout drum assembly passes through 150-P012 and connects pitch booster fan assembly, pitch gas water smoke purifies the assembly with the knockout drum assembly passes through 80-OD008 oily sewage union coupling funnel, pitch booster fan assembly is connected with outside pitch stove air-blower and outside pitch stove respectively.

2. The asphalt storage tank cap gas treatment system according to claim 1, characterized in that: the asphalt storage tank assembly comprises a T4034/5 asphalt storage tank, a V4011A water-sealed tank and a V4011B water-sealed tank, wherein a bidirectional port of the T4034/5 asphalt storage tank is connected with a bidirectional port above the V4011B water-sealed tank through a 150-P001 asphalt air pipe, a left input port of the V4011B water-sealed tank is connected with the 40-PW007 fresh water pipe through the 25-PW001 fresh water pipe, right and lower output ports of the V4011B water-sealed tank are both connected with a 25-OD001 oily sewage pipe, the 25-001 OD oily sewage pipe is connected with a funnel, the V4011B water-sealed tank is further connected with one end of two DN150 pipes respectively, a PT4015 pressure transmitter, a PG4015 pressure meter and a TE4015 temperature detection element are installed at the bidirectional port of the T4034/5 asphalt storage tank respectively, a DN25 gate valve is installed at the left side of the V564017 water-sealed tank, a DN 35 40 gate valve is installed at the lower side outlet of the V4011 water-sealed tank, the output port of the T4034/5 asphalt storage tank is connected with the upper side input port of the V4011A water-sealed tank through a 150-P002 asphalt air pipe, the 150-P002 asphalt air pipe is connected with a D20 nitrogen gas pipeline, two DN20 gate valves and a DN20 pore plate are respectively installed on the DN20 pipeline, the DN20 pore plate is positioned between the two DN20 gate valves, the left side input port of the V4011A water-sealed tank is connected with the 40-PW007 fresh water pipe through the 25-PW002 fresh water pipe, the lower side output port and the right lower side output port of the V4011A water-sealed tank are both connected with another funnel, the upper right side output port of the V4011A water-sealed tank is connected with one end of a DN150 flame arrester, the other end of the DN150 is connected with a 150-P003 asphalt air pipe, the DN 4011A water-sealed tank at the V4011 inlet is provided with the DN25 gate valve, the lower side output valve at the V401 4011A water-sealed tank is provided with the DN40 gate valve, DN150 gate valves are installed at two ends of the DN150 flame arrester, and two ends of the DN150 flame arrester are connected through the other DN150 gate valves.

3. The asphalt storage tank cap gas treatment system according to claim 1, characterized in that: asphalt gas water smoke purification assembly includes T4011 pitch gas water smoke purification tower, install TG4011 thermometer on the T4011 pitch gas water smoke purification tower, T4011 pitch gas water smoke purification tower passes through pipe connection LG4011 liquid level table, the below delivery outlet of T4011 pitch gas water smoke purification tower is connected 80-OD008 oily sewage pipe, T4011 pitch gas water smoke purification tower top delivery outlet is connected respectively 150-P011 pitch trachea with 150-P010 pitch trachea, the right side input port of T4011 pitch gas water smoke purification tower is connected 150-P010 pitch trachea, 40-PW007 fresh water union coupling 40-PW008 fresh water pipe respectively with two left input ports of T4011 pitch gas water smoke purification tower are connected, install DN40 formula valve on the 40-PW 4011 pitch gas water pipe, two left defeated water of T4011 pitch gas water smoke purification tower are defeated and are installed floodgate 40 formula valve, install DN150 floodgate formula valve in the upside delivery outlet department of T4011 asphalt gas water fog purification tower, the downside delivery outlet department of T4011 asphalt gas water fog purification tower installs DN80 floodgate formula valve, install the right side input entry department of T4011 asphalt gas water fog purification tower DN150 floodgate formula valve, install two on the 150-P010 asphalt gas pipe DN150 floodgate formula valve, install TE4012 temperature detecting element and PT4012 pressure transmitter on the 150-P010 asphalt gas pipe.

4. The asphalt storage tank cap gas treatment system according to claim 1, characterized in that: the liquid separating tank assembly comprises a V4014 liquid separating tank, an LG4014 liquid level meter is mounted on the V4014 liquid separating tank, the V4014 liquid separating tank is connected with an LT4014 liquid level transmitter through a pipeline, the V4014 liquid separating tank is also respectively provided with a PT4014 pressure transmitter, a PG4014 pressure gauge, a TE4014 temperature detecting element and a TG4014 temperature meter, an upper output port of the V4014 liquid separation tank is respectively connected with the 150-P012 asphalt gas pipe and the 150-P011 asphalt gas pipe, the lower output port of the V4014 liquid separation tank is respectively connected with a funnel and the 80-OD008 oily sewage pipe, the input port of the V4014 liquid separation tank is connected with the 150-P011 asphalt gas pipe, a DN150 gate valve is arranged on the 150-P011 asphalt gas pipe, the DN150 gate valve is arranged at the input port of the V4014 liquid separation tank, DN40 gate type valve is installed at the below delivery outlet of V4014 liquid separation jar, V4014 liquid separation jar top still respectively with DN100 gate type valve with DN40 gate type valve is connected.

5. The asphalt storage tank cap gas treatment system according to claim 1, characterized in that: pitch booster fan assembly includes C103 pitch booster fan, the one end of DN100 check valve is connected to C103 pitch booster fan's air outlet, the one end of 100-P013 pitch trachea is connected to the other end of DN100 check valve, the one end of spark arrester is connected to the tracheal other end of 100-P013 pitch, the other end of spark arrester is connected respectively outside pitch stove air-blower with outside pitch stove, the one end of basket filter is connected to C103 pitch booster fan's air intake, the other end of basket filter is connected 150-P012 pitch trachea, PT4018 pressure transmitter, TE4018 temperature detecting element, PG4018 pressure table and 401TG 8 thermometer are installed in proper order to C103 pitch booster fan's air outlet department, basket filter with install 401PT 3 pressure transmitter, PG4013 pressure table between the pitch trachea 150-P012 respectively, TG4013 thermometer and TE4013 temperature detect element, the basket filter with install DN150 floodgate formula valve between the pitch trachea of 150-P012, DN100 check valve with install DN100 floodgate formula valve between the pitch trachea of 100-P013, the flame arrester with the one end that 100-P013 pitch trachea is connected is installed DN100 floodgate formula valve, two are installed in proper order to the other end of flame arrester DN150 floodgate formula valve, the both ends of flame arrester are passed through DN100 floodgate formula valve and are connected.