CN212584967U - High temperature heavy oil vault tank deck gas processing system - Google Patents

Abstract

The utility model discloses a high-temperature heavy oil vault tank top gas treatment system, which comprises at least one high-temperature heavy oil vault tank; the top of each high-temperature heavy oil vault tank is communicated with the respective anti-blocking fire-retardant device; the anti-blocking fire-retardant device comprises a water-washing fire-retardant tank and a water-sealing breathing tank; a washing air inlet pipe is arranged at the top of the high-temperature heavy oil arch-top tank, and a washing exhaust pipe is arranged at the outlet of the top of the washing fire-retarding tank; the tank top of the high-temperature heavy oil vault tank is also provided with a breathing air inlet pipe, and the breathing air inlet pipe is communicated with the tank top of the water-sealed breathing tank; the tail end of the first tank top gas collecting pipe is provided with two fans in parallel; the tail end of the second collecting pipe of the tank top gas is connected with the inlet of the hydrogen production blower through the inlet pipe of the hydrogen production blower; the outlet of the hydrogen production blower is connected with the hydrogen production converter. The utility model adopts the processing technology of water seal anti-blocking fire resistance, hydrogen production blower supercharging and hydrogen production reformer high-temperature oxidation incineration, reduces the quantity of equipment, thereby reducing the investment and the operation cost.

Description

High temperature heavy oil vault tank deck gas processing system

Technical Field

The utility model belongs to the technical field of oil gas treatment, concretely relates to high temperature heavy oil vault tank deck gas processing system.

Background

The high-temperature heavy oil vault tank refers to a storage tank, wherein stored materials are heavy oil which is easy to solidify at ambient temperature such as residual oil, asphalt and the like, and measures such as heat preservation, heating and the like are required to be taken for the storage tank so as to ensure that the stored materials are at a higher temperature relative to the ambient temperature, so that damage caused by material solidification and blockage is avoided. In the process of storing materials, gas volatilized by materials such as residual oil and asphalt is gathered at the top of the storage tank to form tank top gas, and the tank top gas of the high-temperature heavy oil vault tank needs to be treated for production safety and environmental protection.

At present, aiming at the tank top gas in the high-temperature heavy oil vault tank, complex treatment processes such as diesel oil absorption, alkali liquor desulfurization and catalytic oxidation are generally adopted. The above process has the following disadvantages: the method needs equipment such as an absorption tower, a desulfurizing tower and the like, and also needs a large amount of diesel oil as an absorbent, so that the method has the disadvantages of more required equipment, high investment and higher operation cost; the sizes of the absorption tower or the desulfurizing tower are difficult to determine because the components and the content of the volatilized tank top gas are difficult to measure actually; heavy oil accumulation is easy to occur at the pipeline and other parts in the tank top gas treatment process, and particularly, the safety production risk of long-period operation exists when the fire arrestor, the breather valve and other facilities are blocked; a nitrogen sealing scheme is adopted for the tank top gas, and a large amount of nitrogen is mixed in the tank top gas, so that the tank top gas is difficult to efficiently treat through a heating furnace, and the production and the operation are not economical.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing a high-temperature heavy oil vault tank top gas treatment system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high-temperature heavy oil vault tank top gas treatment system comprises at least one high-temperature heavy oil vault tank; the top of each high-temperature heavy oil vault tank is communicated with the respective anti-blocking fire-retardant device;

the anti-blocking fire-retardant device comprises a water-washing fire-retardant tank with fire retardant and filtering functions and a water-sealing breathing tank with a breathing valve function;

a washing air inlet pipe is arranged at the top of the high-temperature heavy oil vault tank, and the end of the washing air inlet pipe is inserted below the liquid level in the washing fire-retardant tank; a tank top outlet of the water-washing fire-resisting tank is provided with a water-washing exhaust pipe, and the water-washing exhaust pipe is connected to a first tank top gas collecting pipe;

the tank top of the high-temperature heavy oil vault tank is also provided with a breathing air inlet pipe, and the breathing air inlet pipe is communicated with the tank top of the water-sealed breathing tank;

the tail end of the first tank top gas collecting pipe is provided with two fans in parallel; the inlet of the fan is connected with the first tank top gas collecting pipe through a fan inlet pipe, and the outlet of the fan is connected with the second tank top gas collecting pipe through a fan outlet pipe;

the tail end of the second collecting pipe of the tank top gas is connected with the inlet of the hydrogen production blower through the inlet pipe of the hydrogen production blower; the outlet of the hydrogen production blower is connected with the hydrogen production converter through the outlet pipe of the hydrogen production blower;

the outside of washing intake pipe, washing blast pipe, breathing intake pipe, the first header pipe of tank deck gas, fan inlet tube, fan play tuber pipe, tank deck gas second header pipe, hydrogen manufacturing blower inlet tube, hydrogen manufacturing blower outlet pipe all is provided with steam heat tracing pipe.

Preferably, a water washing water inlet pipe is arranged on the upper portion of the side wall of the water washing fire retardation tank and connected to a main water supply pipe.

Preferably, the steam tracing pipes are arranged outside the water inlet pipe and the main water supply pipe.

Preferably, a washing partition plate extending vertically upwards is arranged at the bottom end of the washing fire retardant tank, and the washing partition plate divides the washing fire retardant tank into a washing area and an overflow area; the end part of the water washing air inlet pipe is inserted below the liquid level in the water washing area; the water washing water inlet pipe is communicated to the water washing area;

and a washing overflow pipe is arranged on the lower part of the side wall of the washing fire-retardant tank in the overflow area and communicated with a floor drain on the ground.

Preferably, a first in-situ liquid level meter for detecting the liquid level of the water washing area and a first in-situ thermometer for detecting the temperature of the water washing area are arranged on the side wall of the water washing fire-retarding tank.

Preferably, a horizontal first clapboard is arranged in the water-sealed breathing tank, and the water-sealed breathing tank is divided into an upper inhalation area and a lower exhalation area by the first clapboard;

a vertically extending communicating pipe is arranged in the middle of the first partition plate; the bottom end of the communicating pipe is inserted below the liquid level of the exhalation area;

a breathing water inlet pipe is arranged at the upper part of the tank top of the water-sealed breathing tank and is connected to a main water supply pipe;

an atmospheric inlet pipe is further arranged at the upper part of the top of the water-sealed breathing tank, and the end part of the atmospheric inlet pipe is inserted below the liquid level of the air suction area;

an outlet air pipe is arranged on the side wall of the water-sealed breathing tank of the upper gas phase space in the breathing zone.

Preferably, a second partition board which is vertically upward is arranged on one side of the bottom end of the expiration area; the bottom end of the communicating pipe is inserted below the liquid level of one side of the second partition plate, a breath overflow pipe is arranged on the lower portion of the side wall of the water seal breath tank on the other side of the second partition plate, and the breath overflow pipe is communicated with a floor drain on the ground.

Preferably, a steam tracing pipe is arranged outside the breathing water inlet pipe.

Preferably, a second local liquid level meter for detecting the liquid level of the inhalation area and a second local thermometer for detecting the temperature of the inhalation area are arranged on the side wall of the water-sealed breathing tank of the inhalation area;

and a third local liquid level meter for detecting the liquid level of the expiration area is arranged on the side wall of the water-sealed breathing tank of the expiration area.

Preferably, an inlet pneumatic switch butterfly valve and an inlet local pressure gauge are sequentially arranged on the fan inlet pipe along the medium flowing direction;

and a check valve, an outlet local pressure gauge, an outlet pressure transmitter and an outlet pneumatic switch butterfly valve are sequentially arranged on the outlet pipe of the fan along the medium flowing direction.

And a collecting pipe pressure transmitter is arranged on a tank top gas first collecting pipe at the front end of the fan.

The utility model has the advantages that:

(1) the high-temperature heavy oil vault tank top gas treatment system of the utility model adopts the treatment technology of water seal anti-blocking fire resistance, hydrogen production blower supercharging and hydrogen production reformer high-temperature oxidation incineration to replace the prior treatment process of diesel oil absorption, alkali liquor desulfurization and catalytic oxidation, so that the equipment such as an absorption tower, a desulfurization tower and the like is not needed, the quantity of the equipment is reduced, and the investment and the operation cost are reduced; meanwhile, most large petroleum refineries are provided with hydrogen production conversion furnaces, so that the treatment system realizes the treatment of the tank top gas of the high-temperature heavy oil vault tank by utilizing the existing equipment, and further reduces the investment and the operation cost.

(2) The tank top gas treatment system of the high-temperature heavy oil vault tank of the utility model replaces a filter and a flame arrester in the prior art through the water-washing flame arrester tank, and replaces a breather valve in the prior art through the water-sealing breather tank, thereby avoiding the problem of safety production risk caused by the accumulation of heavy oil in the flame arrester and the breather valve in the prior art; meanwhile, the water seal technology is adopted to replace the existing nitrogen seal technology, so that the problem of low subsequent treatment efficiency caused by the fact that a large amount of nitrogen is mixed in the tank top gas is solved.

(3) The utility model discloses the circulation pipeline of high temperature heavy oil vault tank top gas all is provided with steam heat tracing pipe outward among the high temperature heavy oil vault tank top gas processing system, realizes the heating to the pipeline, prevents that the heavy oil from gathering appearing in the pipeline, has reduced the heavy oil and has gathered congealing stifled risk.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic flow diagram of a high temperature heavy oil dome tank top gas treatment system of the present invention;

FIG. 2 is a schematic structural view of the fire-retardant washing tank of the present invention;

FIG. 3 is a schematic view of the structure of the middle water-sealed breathing tank of the present invention;

FIG. 4 is a schematic view of the top of the air intake tube of the present invention;

wherein,

1-high temperature heavy oil vault;

2-a water-washing fire-resistant tank, 201-a water-washing air inlet pipe, 202-a water-washing air outlet pipe, 203-a water-washing water inlet pipe, 204-a water-washing clapboard, 205-a water-washing overflow pipe, 206-a first in-situ liquid level meter, 207-a first in-situ thermometer and 208-a first U-shaped water seal;

3-water seal breathing tank, 301-first clapboard, 302-inhalation area, 303-exhalation area, 304-communicating pipe, 305-second clapboard, 306-breathing air inlet pipe, 307-breathing water inlet pipe, 308-atmospheric air inlet pipe, 309-outlet air pipe, 310-breathing overflow pipe, 311-second local liquid level meter, 312-second local thermometer, 313-third local liquid level meter and 314-second U-shaped water seal;

4-a first collecting pipe of tank top gas, 401-a collecting pipe pressure transmitter, 5-a main water supply pipe and 6-a gate valve;

7-blower, 701-blower inlet pipe, 702-blower outlet pipe, 703-inlet pneumatic switch butterfly valve, 704-inlet local pressure gauge, 705-check valve, 706-outlet local pressure gauge, 707-outlet pressure transmitter, 708-outlet pneumatic switch butterfly valve;

8-a second collecting pipe of tank top gas, 801-a valve;

9-hydrogen production blower, 901-hydrogen production blower inlet pipe, 902-hydrogen production blower outlet pipe, 903-hydrogen production blower inlet valve, 904-air suction pipe, 905-conical rain hat, 906-rib and 907-steel wire mesh;

10-hydrogen production converter, 11-floor drain.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, the terms such as "bottom" and "top" are used to indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship between the components or elements of the present invention, and are not specific to any component or element of the present invention, and should not be construed as limiting the present invention.

In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, and may be either fixedly connected or integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.

The present invention will be further explained with reference to the drawings and examples.

Example 1:

as shown in fig. 1, a high-temperature heavy oil dome tank top gas treatment system comprises at least one high-temperature heavy oil dome tank 1; the top of each high-temperature heavy oil vault tank 1 is communicated with a respective anti-blocking fire-retardant device;

the anti-blocking fire-retardant device comprises a water-washing fire-retardant tank 2 with fire retardant and filtering functions and a water-sealing breathing tank 3 with a breathing valve function; the treatment system replaces a filter and a flame arrester in the prior art by the water-washing fire-retarding tank 2, and replaces a breather valve in the prior art by the water-sealing breather tank 3, so that the problem of safety production risk caused by heavy oil accumulation in the flame arrester and the breather valve in the prior art is solved; meanwhile, the water seal technology is adopted to replace the existing nitrogen seal technology, so that the problem of low subsequent treatment efficiency caused by the fact that a large amount of nitrogen is mixed in the tank top gas is solved;

the tank top of the high-temperature heavy oil vault tank 1 is provided with a water washing air inlet pipe 201, and the end part of the water washing air inlet pipe 201 is inserted below the liquid level in the water washing fire-retardant tank 2, so that components such as asphalt which have certain viscosity and are possibly adhered to a pipeline or a fan or a hydrogen production blower in the gas at the tank top are washed, a filtering effect is achieved, the operation safety of the equipment such as the hydrogen production blower is ensured, and water sealing fire retardance is realized through the liquid in the water washing fire-retardant tank 2; a tank top outlet of the water-washing fire-retarding tank 2 is provided with a water-washing exhaust pipe 202, and the water-washing exhaust pipe 202 is connected to a first tank top gas collecting pipe 4; specifically, the water washing air inlet pipe 201 and the water washing air outlet pipe 202 are both provided with a gate valve 6;

the tank top of the high-temperature heavy oil vault tank 1 is also provided with a breathing air inlet pipe 306, and the breathing air inlet pipe 306 is communicated with the tank top of the water-sealed breathing tank 3;

the tail end of the tank top gas first collecting pipe 4 is provided with two fans 7 in parallel; the inlet of the fan 7 is connected with the first tank top gas collecting pipe 4 through a fan inlet pipe 701, and the outlet of the fan 7 is connected with the second tank top gas collecting pipe 8 through a fan outlet pipe 702;

the tail end of the second collecting pipe 8 for the tank top gas is connected with the inlet of the hydrogen production blower 9 through a hydrogen production blower inlet pipe 901; the outlet of the hydrogen production blower 9 is connected with the hydrogen production converter 10 through the outlet pipe 902 of the hydrogen production blower, so that the tank top gas is conveyed into the hydrogen production converter 10 to be burnt; specifically, a valve 801 is arranged on a second collecting pipe 8 of the top gas at the front end of the hydrogen production blower 9, and a hydrogen production blower inlet valve 903 is arranged on a hydrogen production blower inlet pipe 901;

specifically, as shown in fig. 4, an inlet of the hydrogen production blower 9 is provided with an air suction pipe 904, a conical rain hat 905 is arranged at the top of the air suction pipe 904, the inner side of the conical rain hat 905 is connected with the outer wall surface of the air suction pipe 904 through a plurality of ribs 906, a steel wire mesh 907 is arranged between adjacent ribs 906, the other two ends of the steel wire mesh 907 are respectively connected with the inner wall surface of the conical rain hat 905 and the outer side surface of the air suction pipe 904, and the arrangement of the steel wire mesh 907 plays a role in preventing birds from entering the inner side of the conical rain hat 905 for nesting or preventing sundries such as paper sheets from entering the conical rain hat 905; the end of the inlet pipe 901 of the hydrogen production blower is inserted into the steel wire mesh 907 from bottom to top and is communicated with the top end of the air suction pipe 904 in an air flow manner, and the inlet pipe 901 of the hydrogen production blower is simple to mount and dismount in the connecting mode.

And steam heat tracing pipes are arranged outside the water washing air inlet pipe 201, the water washing exhaust pipe 202, the breathing air inlet pipe 306, the first tank top gas collecting pipe 4, the fan inlet pipe 701, the fan air outlet pipe 702, the second tank top gas collecting pipe 8, the hydrogen production blower inlet pipe 901 and the hydrogen production blower outlet pipe 902. The circulation pipeline of high temperature heavy oil vault tank deck gas all is provided with steam heat tracing pipe outward promptly in this application, realizes the heating to the pipeline, prevents that the heavy oil from gathering appearing in the pipeline, has reduced the risk that the heavy oil gathers and congeals stifled.

The treatment system adopts the treatment technology of water seal anti-blocking fire resistance, hydrogen production blower pressurization and hydrogen production reformer high-temperature oxidation incineration to replace the existing treatment process of diesel oil absorption, alkali liquor desulfurization and catalytic oxidation, does not need equipment such as an absorption tower and a desulfurization tower, reduces the number of equipment and reduces the investment and the operation cost; meanwhile, most large petroleum refineries are provided with the hydrogen production converter 10, so that the treatment system realizes the treatment of the tank top gas of the high-temperature heavy oil vault tank by utilizing the existing equipment, and further reduces the investment and the operation cost.

Example 2:

on the basis of the embodiment 1, the upper part of the side wall of the water-washing fire-retarding tank 2 is provided with a water-washing water inlet pipe 203, the water-washing water inlet pipe 203 is connected to a main water supply pipe 5, the main water supply pipe 5 is connected with a water supply system, the water supply system can be realized by adopting the prior art, and the specific structure is not repeated herein; specifically, a gate valve 6 is arranged on the water inlet pipe 203.

Preferably, steam tracing pipes are arranged outside the water inlet pipe 203 and the main water supply pipe 5.

Preferably, as shown in fig. 2, a water washing partition plate 204 extending vertically and upwardly is arranged at the bottom end of the water washing fire-retarding tank 2, and the water washing partition plate 204 divides the water washing fire-retarding tank 2 into a water washing area and an overflow area; the end part of the water washing air inlet pipe 201 is inserted below the liquid level in the water washing area; the water washing water inlet pipe 203 is communicated to the water washing area;

and a water washing overflow pipe 205 is arranged on the lower part of the side wall of the water washing fire-resisting tank 2 in the overflow area, and the water washing overflow pipe 205 is communicated with a floor drain 11 on the ground.

Preferably, a first U-shaped water seal 208 is arranged on the water washing overflow pipe 205 close to the side wall of the water washing fire-retarding tank 2, and the first U-shaped water seal 208 prevents the upper gas phase space of the water washing fire-retarding tank 2 from communicating with the water washing overflow pipe 205 behind the first U-shaped water seal 208, so that the top gas can be prevented from being discharged through the water washing overflow pipe 205.

Preferably, a first on-site liquid level meter 206 for detecting the liquid level of the water washing area and a first on-site thermometer 207 for detecting the temperature of the water washing area are arranged on the side wall of the water washing fire-resistant tank 2.

In example 2, water is supplied to the water washing area in the water-washing fire-resisting tank 2 through the main water supply pipe 5 and the water-washing water inlet pipe 203: the water from the water washing water inlet pipe 203 enters a water washing area, and after the liquid level in the water washing area in the water washing fire-resisting tank 2 is flush with the top of the water washing partition plate 204, the redundant liquid overflows to an overflow area and is discharged to the floor drain 11 through the water washing overflow pipe 205; and the first in-situ level gauge 206 detects the level of liquid in the wash zone.

In specific use, keep gate valve 6 on the washing inlet tube 203 open slightly, keep having a small amount of rivers to flow, make washing inlet tube 203 continuously block the interior water supply of cupping jar 2 for washing, because washing inlet tube 203 is provided with the steam heat tracing pipe outward, thereby can guarantee that the washing blocks the temperature of cupping jar 2 interior liquid, reinforcing washing on the one hand blocks the washing filtering action of cupping jar 2 interior liquid, on the other hand guarantees that the space that the tank deck gas is located has certain temperature, thereby prevents the gathering of condensing of tank deck gas.

Example 3:

on the basis of embodiment 1 or embodiment 2, as shown in fig. 3, a horizontal first partition plate 301 is arranged in the water-sealed breathing tank 3, and the water-sealed breathing tank 3 is divided into an upper inhalation area 302 and a lower exhalation area 303 by the first partition plate 301;

a vertically extending communicating pipe 304 is arranged in the middle of the first partition board 301, and the communicating pipe 304 communicates the inhalation area 302 with the exhalation area 303; the bottom end of the communicating pipe 304 is inserted below the liquid level of the exhalation zone 303; specifically, the slope setting that the bottom mouth cross-section of communicating pipe 304 and level are certain angle has increased the area of bottom mouth on the one hand, and on the other hand slope setting can make the bubble discharge gradually, and when making high temperature heavy oil vault jar exhale, the bubble is changeed and is discharged from the bottom mouth of communicating pipe 304, makes high temperature heavy oil vault jar exhale more evenly, more smooth, when preventing that communicating pipe 304 bottom mouth cross-section is level, and gaseous before escaping in the exit gathering form the big bubble, the bubble breaks in the twinkling of an eye and leads to storage tank top pressure fluctuation phenomenon by a wide margin.

A breathing water inlet pipe 307 is arranged at the upper part of the top of the water-sealed breathing tank 3, and the breathing water inlet pipe 307 is connected to a main water supply pipe 5; specifically, a gate valve 6 is arranged on the breathing water inlet pipe 307;

the upper part of the top of the water-sealed breathing tank 3 is also provided with an atmospheric inlet pipe 308, and the end part of the atmospheric inlet pipe 308 is inserted below the liquid level of the inhalation zone 302;

the depth of the atmosphere inlet pipe 308 inserted below the liquid level of the air suction zone 302 and the depth of the communicating pipe 304 inserted below the liquid level of the air exhaust zone 303 are the pressure control range of the high-temperature heavy oil vault tank;

an outlet air pipe 309 is arranged on the side wall of the water-sealed breathing tank 3 in the upper gas phase space in the expiration area 303.

Expiration process of high-temperature heavy oil dome tank 1: the tank top gas enters the upper part of the inspiration area 302 through the breathing gas inlet pipe 306, and then enters the expiration area 303 through the communicating pipe 304, the section of the bottom port of the communicating pipe 304 is obliquely arranged, so that large bubbles are prevented from breathing, the expiration is smoother, and finally the tank top gas is discharged through the outlet gas pipe 309;

and (3) air suction process of the high-temperature heavy oil arch tank 1: at this time, the air intake pipe 306 is at a negative pressure, so that the upper portion of the inhalation zone 302 is also at a negative pressure, and at this time, air is supplemented to the inhalation zone 302 through the atmosphere inlet pipe 308, thereby meeting the requirements of the air intake pipe 306.

Preferably, a second partition plate 305 which is vertically upward is arranged on one side of the bottom end of the expiration area 303; the bottom end of the communicating pipe 304 is inserted below the liquid level of one side of the second partition plate 305, a breath overflow pipe 310 is arranged at the lower part of the side wall of the water-sealed breathing tank 3 at the other side of the second partition plate 305, and the breath overflow pipe 310 is communicated with a floor drain 11 on the ground.

Preferably, a second U-shaped water seal 314 is arranged on the breath overflow pipe 310 close to the side wall of the water seal breath tank 3, and the second U-shaped water seal 314 prevents the upper gas phase space of the breath area 303 from being communicated with the breath overflow pipe 310 behind the second U-shaped water seal 314, so that the gas exhaled by the tank can be prevented from being discharged through the breath overflow pipe 310.

Preferably, a steam tracing pipe is arranged outside the breathing water inlet pipe 307.

Preferably, a second on-site liquid level meter 311 for detecting the liquid level of the inhalation zone 302, a second on-site thermometer 312 for detecting the temperature of the inhalation zone 302 are arranged on the side wall of the water sealed breathing tank 3 of the inhalation zone 302;

and a third in-situ liquid level meter 313 for detecting the liquid level of the expiration area 303 is arranged on the side wall of the water seal breathing tank 3 of the expiration area 303.

In embodiment 3, the water supply system delivers water into the water seal breathing tank 3 through the breathing water inlet pipe 307: water from the breathing water inlet pipe 307 firstly enters the inhalation area 302, and when the liquid level reaches the top end of the communicating pipe 304, the water flows to the exhalation area 303 through the communicating pipe 304; after the liquid level in the expiration area 303 of the water-sealed breathing tank 3 is flush with the top of the second partition plate 305, the redundant liquid overflows to the other side and is discharged to the floor drain 11 through the breathing overflow pipe 310.

In the specific use process, the gate valve 4 on the breathing water inlet pipe 307 is kept slightly opened, a small amount of water is kept flowing, the breathing water inlet pipe 307 is enabled to continuously supply water for the water seal breathing tank 3, and the steam tracing pipe is arranged outside the breathing water inlet pipe 307, so that the temperature of liquid in the water seal breathing tank 3 can be guaranteed; consequently, liquid in the water seal breathing tank 3 in this application can guarantee to have certain temperature, and then makes 3 inner space of water seal breathing tank and communicating pipe 304 inside all keep under certain temperature to make breathing in of high temperature heavy oil vault jar, exhale the process all go on under the environment of uniform temperature, heavy oil gathers the emergence of phenomenon when further having prevented breathing, has reduced the heavy oil and has gathered the risk of congealing stifled.

Example 4:

on the basis of the embodiment 1, the embodiment 2 or the embodiment 3, an inlet pneumatic switch butterfly valve 703 and an inlet local pressure gauge 704 are sequentially arranged on the fan inlet pipe 701 along the medium flowing direction;

and a check valve 705, an outlet local pressure gauge 706, an outlet pressure transmitter 707 and an outlet pneumatic switch butterfly valve 708 are sequentially arranged on the fan outlet pipe 702 along the medium flowing direction.

And a collecting pipe pressure transmitter 401 is arranged on the tank top gas first collecting pipe 4 at the front end of the fan 7.

The total manifold pressure detected by the manifold pressure transmitter 401, the inlet local pressure gauge 704 for detecting the pressure at the inlet of the fan 7, and the outlet local pressure gauge 706 for detecting the pressure at the outlet of the fan 7, so that the change of the pressure in the corresponding pipeline can be mastered, the start and stop of the fan and the on and off of each valve can be determined, and the safety protection effect can be realized.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the present invention, and those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without inventive labor are still within the scope of the present invention.

Claims (10)

1. A high-temperature heavy oil vault tank top gas treatment system comprises at least one high-temperature heavy oil vault tank; the device is characterized in that the top of each high-temperature heavy oil vault tank is communicated with a respective anti-blocking fire-retardant device;

the anti-blocking fire-retardant device comprises a water-washing fire-retardant tank with fire retardant and filtering functions and a water-sealing breathing tank with a breathing valve function;

a washing air inlet pipe is arranged at the top of the high-temperature heavy oil vault tank, and the end of the washing air inlet pipe is inserted below the liquid level in the washing fire-retardant tank; a tank top outlet of the water-washing fire-resisting tank is provided with a water-washing exhaust pipe, and the water-washing exhaust pipe is connected to a first tank top gas collecting pipe;

the tank top of the high-temperature heavy oil vault tank is also provided with a breathing air inlet pipe, and the breathing air inlet pipe is communicated with the tank top of the water-sealed breathing tank;

the tail end of the first tank top gas collecting pipe is provided with two fans in parallel; the inlet of the fan is connected with the first tank top gas collecting pipe through a fan inlet pipe, and the outlet of the fan is connected with the second tank top gas collecting pipe through a fan outlet pipe;

the tail end of the second collecting pipe of the tank top gas is connected with the inlet of the hydrogen production blower through the inlet pipe of the hydrogen production blower; the outlet of the hydrogen production blower is connected with the hydrogen production converter through the outlet pipe of the hydrogen production blower;

the outside of washing intake pipe, washing blast pipe, breathing intake pipe, the first header pipe of tank deck gas, fan inlet tube, fan play tuber pipe, tank deck gas second header pipe, hydrogen manufacturing blower inlet tube, hydrogen manufacturing blower outlet pipe all is provided with steam heat tracing pipe.

2. The high-temperature heavy oil dome can top gas treatment system of claim 1, wherein a water washing water inlet pipe is arranged at the upper part of the side wall of the water washing fire-resistant can, and the water washing water inlet pipe is connected to a main water supply pipe.

3. The high-temperature heavy oil dome can top gas treatment system as claimed in claim 2, wherein the water washing water inlet pipe and the main water supply pipe are externally provided with steam tracing pipes.

4. The high-temperature heavy oil vault tank top gas treatment system of claim 3, wherein a washing partition plate extending vertically upwards is arranged at the bottom end of the washing fire-retardant tank, and divides the washing fire-retardant tank into a washing area and an overflow area; the end part of the water washing air inlet pipe is inserted below the liquid level in the water washing area; the water washing water inlet pipe is communicated to the water washing area;

and a washing overflow pipe is arranged on the lower part of the side wall of the washing fire-retardant tank in the overflow area and communicated with a floor drain on the ground.

5. The high-temperature heavy oil dome tank top gas treatment system as recited in claim 4, wherein a first in-situ liquid level meter for detecting the liquid level of the water washing area and a first in-situ thermometer for detecting the temperature of the water washing area are arranged on the side wall of the water washing fire-resisting tank.

6. The high-temperature heavy oil dome can top gas treatment system of claim 1, wherein a horizontal first partition plate is arranged in the water seal breathing can, and the first partition plate divides the water seal breathing can into an upper gas suction area and a lower gas expiration area;

a vertically extending communicating pipe is arranged in the middle of the first partition plate; the bottom end of the communicating pipe is inserted below the liquid level of the exhalation area;

a breathing water inlet pipe is arranged at the upper part of the tank top of the water-sealed breathing tank and is connected to a main water supply pipe;

an atmospheric inlet pipe is further arranged at the upper part of the top of the water-sealed breathing tank, and the end part of the atmospheric inlet pipe is inserted below the liquid level of the air suction area;

an outlet air pipe is arranged on the side wall of the water-sealed breathing tank of the upper gas phase space in the breathing zone.

7. The high-temperature heavy oil dome can top gas treatment system of claim 6, wherein a second partition plate is arranged vertically upward on one side of the bottom end of the expiration area; the bottom end of the communicating pipe is inserted below the liquid level of one side of the second partition plate, a breath overflow pipe is arranged on the lower portion of the side wall of the water seal breath tank on the other side of the second partition plate, and the breath overflow pipe is communicated with a floor drain on the ground.

8. The high-temperature heavy oil dome can top gas treatment system of claim 6, wherein a steam tracing pipe is arranged outside the breathing water inlet pipe.

9. The high-temperature heavy oil dome canister top gas treatment system as claimed in claim 6, wherein a second in-situ liquid level meter for detecting the liquid level of the suction area and a second in-situ thermometer for detecting the temperature of the suction area are arranged on the side wall of the water-sealed breathing tank of the suction area;

and a third local liquid level meter for detecting the liquid level of the expiration area is arranged on the side wall of the water-sealed breathing tank of the expiration area.

10. The high-temperature heavy oil dome tank top gas treatment system as claimed in claim 1, wherein an inlet pneumatic switch butterfly valve and an inlet local pressure gauge are sequentially arranged on the fan inlet pipe along the medium flowing direction;

a check valve, an outlet local pressure gauge, an outlet pressure transmitter and an outlet pneumatic switch butterfly valve are sequentially arranged on the outlet pipe of the fan along the medium flowing direction;

and a collecting pipe pressure transmitter is arranged on a tank top gas first collecting pipe at the front end of the fan.

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