CN103883762A - Low-pressure drop catalytic cracking regeneration flue gas water-sealed tank and method thereof - Google Patents
Low-pressure drop catalytic cracking regeneration flue gas water-sealed tank and method thereof Download PDFInfo
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- CN103883762A CN103883762A CN201410084850.4A CN201410084850A CN103883762A CN 103883762 A CN103883762 A CN 103883762A CN 201410084850 A CN201410084850 A CN 201410084850A CN 103883762 A CN103883762 A CN 103883762A
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- flue gas
- water
- sealed tank
- tank
- water sealed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K33/00—Floats for actuation of valves or other apparatus
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- Engineering & Computer Science (AREA)
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- Exhaust Gas After Treatment (AREA)
Abstract
The invention belongs to the technical field of catalytic cracking units for petroleum processing, and discloses a low-pressure drop catalytic cracking regeneration flue gas water-sealed tank which comprises a regeneration flue gas opening and closing device. The regeneration flue gas opening and closing device is arranged in an inner barrel (2), and the regeneration flue gas opening and closing device is composed of a floating bin 9, guiding sleeves 10, guiding bars 11, a water seal tank 12 and a guiding support 13. The floating bin 9 is integrally connected with the water seal tank 12 through a plurality of guiding sleeves 10, the guiding sleeves 10 are arranged on the vertical guiding bars 11 in the inner barrel (2) in a sleeved mode, the upper ends of the guiding bars 11 penetrate into a guiding hole in the guiding support 13 which is fixedly arranged on the inner wall of a flue gas inlet pipe 4, and the lower ends of the guiding bars 11 are fixedly arranged at the bottom of a water-sealed tank shell 1 and the bottom of the inner barrel 2 respectively. According to the low-pressure drop catalytic cracking regeneration flue gas water-sealed tank, flue gas rotates by 90 degrees after entering the water-sealed tank and can go out, the flue gas pressure drop is reduced by 3/4 than the pressure drop of a traditional water-sealed tank, and compared with a two-position stop valve of an existing water-sealed tank, the low-pressure drop catalytic cracking regeneration flue gas water-sealed tank is low in pressure drop, simple in structure and safe and reliable to use.
Description
Technical field
The invention belongs to the catalytic cracking unit technical field of petroleum processing, especially a kind of related low pressure drop catalytic cracking regenerated flue gas water sealed tank and method in catalytic cracking unit regenerated flue gas utilization system.
Background technique
The solid powder th-1 catalyst using in petroleum processing catalytic cracking unit, complete after a course of reaction, solid powder th-1 catalyst surface can produce carbon distribution, area carbon makes the activity decreased of solid powder th-1 catalyst, in order to recover the activity of solid powder th-1 catalyst, need in the regenerator of catalytic cracking unit, pass into 0.2MPa pressurized air by solid powder th-1 catalyst area carbon burning-off.The burning process of solid powder th-1 catalyst in regenerator makes solid powder th-1 catalyst remove area carbon activity recovery on the one hand, can produce on the other hand the high-temperature flue gas of 700 DEG C of left and right, and also contain a certain amount of CO in regenerated flue gas.
The comprehensive Utilization Ways of regenerated flue gas generally has two: the one, and regenerated flue gas drives flue gas turbine expander, and flue gas turbine expander drives main air blower (be regenerator burn compressed-air actuated compressor is provided).The regenerated flue gas of low pressure is by carbon monoxide incinerator in addition, and further oxygen, fully burns the CO in regenerated flue gas, and high-temperature flue gas produces Steam Recovery heat energy by heating water.In this two-way transducing energy recovery device running, switching is that inevitably water sealed tank is with regard to a suitable switching valve.
The working principle of water sealed tank, described water sealed tank has two kinds of working staties: a kind of is the opening state that regenerated flue gas is passed through; Another is the closed condition that regenerated flue gas is cut off.See Fig. 1:
When water sealed tank is during in opening state: high temperature regeneration flue gas is entered in water sealed tank by smoke inlet pipe 4,180 ° of the annular channel that then form from water sealed tank inner core 2 and smoke inlet pipe 4 are turned back upwards, and are discharged by smoke outlet tube 3.
When water sealed tank is during in closed condition: by water entrance 8, toward water filling in water sealed tank inner core 2, in the time that water sealed tank inner core 2 water levels exceed flow-off pipe 6, water will flow to the young water sealed tank 7 of overflow from flow-off pipe 6.6 times edges of water sealed tank flow-off pipe are highly water seal height to the lower edge of smoke inlet pipe 4, the poor pressure reduction being greater than between smoke inlet 4 and smoke outlet 3 of hydrostatic pressure that water-head produces, and water seals regenerated flue gas, realizes water sealed tank closed condition.
The problem that existing water sealed tank exists, water sealed tank is just as two formula cut-off valves, as water sealed tank after flue gas turbine expander in normal productive process in opening state, flue gas enters inner core 2 by smoke inlet pipe 3, then from entered by smoke inlet pipe 3 annular space that inner core 2 forms upwards 180 ° turn back, rotate from pipe again and discharge, pressure drop is excessive.
Summary of the invention
The technical problem existing about two formula cut-off valves of water sealed tank for solving background technique, the invention provides a kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank and method.
In order to realize foregoing invention object, the present invention adopts following technological scheme:
A kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank, comprise: the opening closure of water sealed tank housing 1, inner core 2, smoke outlet tube 3, flue gas inlet tube 4, flow-off pipe 6, regenerated flue gas, described inner core 2 is provided with the opening closure of regenerated flue gas, the opening closure of described regenerated flue gas forms by floating storehouse 9, guide thimble 10, guide rod 11, seal tank 12, guide support 13, and described floating storehouse 9 connects and composes one by some guide thimbles 10 with seal tank 12; Describedly be nested with on guide rod vertical in inner core 2 11 to sleeve pipe 10, guide rod 11 upper ends are through in the pilot hole on guide support 13 fixing on flue gas inlet tube 4 inwalls; Guide rod 11 lower ends are separately fixed at water sealed tank housing 1 bottom and inner core 2 bottoms;
Wherein, inner core 2 bottoms are provided with the water entrance 8 rising or decline in floating storehouse 9, and inner core 2 middle parts are provided with the flow-off pipe 6 of sealing flue gas inlet tube 4 bottoms; The top corresponding with seal tank 12 is provided with the water intake 14 of sealing flue gas inlet tube 4 bottoms.
A kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank, described floating storehouse 9 by multiple symmetries independently interval cavity form, the top at each interval is provided with vent 7.
A kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank method of work, its step is as follows:
1) flue gas inlet tube in water sealed tank housing 14 is shortened, make its lower along with the upper edge of smoke outlet tube 3 at a height, flue gas turns 90 ° and just can get rid of in water sealed tank like this, makes flue gas in water sealed tank internal drop minimizing 3/4;
2) in water sealed tank, increase a floating storehouse 9 and a seal tank 12, between floating storehouse 9 and seal tank 12, connect with 4 guide thimbles 10, guide thimble 10 can slide up and down in guide rod 11, guide rod 11 bottoms are separately fixed at 1 end of water sealed tank housing and inner core 2 bottoms, and guide rod 11 tops are through the pilot hole of guide support 13;
3), when in water sealed tank, temperature variation guide rod expands, the elongation that guide rod 11 expands can move up and down in the pilot hole of guide support 13; Specific works mode is as follows:
In the time that needs cut off flue gas, by water entrance pipe 8 to 2 water fillings of water sealed tank inner core, when water level reaches buoyancy position height, floating storehouse 9 produces to buoyancy in water, in the time that buoyancy is greater than all component weight linking together, along with supporting seal tank 12 by guide thimble 10 and synchronously float in the floating storehouse 9 of the rising of water level; In the time that height of water level arrives flow-off pipe 6, water level tops out, and at this moment smoke inlet pipe 4 embeds in seal tank 12 annular spaces completely, water intake 14 is opened, to the interior water filling of seal tank 12, when seal tank 12 fills water, when the differential pressure of water level that seal tank forms is greater than flue gas pressures, flue gas is cut off; Now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in closed condition;
In the time that water sealed tank need to be opened, by water entrance pipe 8, water in water sealed tank inner core 2 is bled off, along with the reduction of water level, floating storehouse 9 is supported seal tank 12 by guide thimble 10 and is synchronously declined, fall bottom, by water sealed tank now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in opening state for flue gas always.
Owing to adopting technological scheme as above, the present invention has following superiority:
A kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank and method, adopt and shorten flue gas smoke inlet 4, make its lower upper along concordant along with smoke outlet 3, flue gas enters and turns 90 ° after water sealed tank and just can go out like this, and the traditional water sealed tank pressure drop of flue gas pressure drop ratio is reduced more than 3/4.In water sealed tank, set up floating storehouse 9 and open and close smoke inlet 4 by the seal tank 12 connecting to sleeve pipe 10, when water level raises, floating storehouse 9 is supported seal tank 12 by guide thimble 10 and is synchronously floated, when seal tank 12 fills water, the differential pressure of water level that seal tank forms is greater than inlet flue gas pressure, and flue gas is cut off.Compared with two formula cut-off valves of existing water sealed tank, there is water sealed tank pressure drop low, simple in structure, safe and reliable.
Brief description of the drawings
Fig. 1 is existing water sealed tank structural representation.
Fig. 2 is the structural representation of low pressure drop catalytic cracking regenerated flue gas water sealed tank opening state.
Fig. 3 is the structural representation of low pressure drop catalytic cracking regenerated flue gas water sealed tank closed condition.
In figure: 1-water sealed tank housing; 2-inner core; 3-smoke outlet tube; 4-smoke inlet pipe; 5-insulated lining; 6-flow-off pipe; 7-vent; 8-water entrance pipe; 9-floats storehouse; 10-guide thimble; 11-guide rod; 12-seal tank; 13-guide support; 14-water intake.
Embodiment
As shown in Figure 2,3: a kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank, comprise: the opening closure of water sealed tank housing 1, inner core 2, smoke outlet tube 3, flue gas inlet tube 4, flow-off pipe 6, regenerated flue gas, described inner core 2 is provided with the opening closure of regenerated flue gas, the opening closure of described regenerated flue gas forms by floating storehouse 9, guide thimble 10, guide rod 11, seal tank 12, guide support 13, and described floating storehouse 9 connects and composes one by some guide thimbles 10 with seal tank 12; Describedly be nested with on guide rod vertical in inner core 2 11 to sleeve pipe 10, guide rod 11 upper ends are through in the pilot hole on guide support 13 fixing on flue gas inlet tube 4 inwalls; Guide rod 11 lower ends are separately fixed at water sealed tank housing 1 bottom and inner core 2 bottoms;
Wherein, inner core 2 bottoms are provided with the water entrance 8 rising or decline in floating storehouse 9, and inner core 2 middle parts are provided with the flow-off pipe 6 of sealing flue gas inlet tube 4 bottoms; The top corresponding with seal tank 12 is provided with the water intake 14 of sealing flue gas inlet tube 4 bottoms.Described floating storehouse 9 by multiple symmetries independently interval cavity form, the top at each interval is provided with vent 7.
A kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank method of work, its step is as follows:
1) flue gas inlet tube in water sealed tank housing 14 is shortened, make its lower along with the upper edge of smoke outlet tube 3 at a height, flue gas turns 90 ° and just can get rid of in water sealed tank like this, makes flue gas in water sealed tank internal drop minimizing 3/4;
2) in water sealed tank, increase a floating storehouse 9 and a seal tank 12, between floating storehouse 9 and seal tank 12, connect with 4 guide thimbles 10, guide thimble 10 can slide up and down in guide rod 11, guide rod 11 bottoms are separately fixed at 1 end of water sealed tank housing and inner core 2 bottoms, and guide rod 11 tops are through the pilot hole of guide support 13;
3), when in water sealed tank, temperature variation guide rod expands, the elongation that guide rod 11 expands can move up and down in the pilot hole of guide support 13; Specific works mode is as follows:
In the time that needs cut off flue gas, by water entrance pipe 8 to 2 water fillings of water sealed tank inner core, when water level reaches buoyancy position height, floating storehouse 9 produces to buoyancy in water, in the time that buoyancy is greater than all component weight linking together, along with supporting seal tank 12 by guide thimble 10 and synchronously float in the floating storehouse 9 of the rising of water level; In the time that height of water level arrives flow-off pipe 6, water level tops out, and at this moment smoke inlet pipe 4 embeds in seal tank 12 annular spaces completely, water intake 14 is opened, to the interior water filling of seal tank 12, when seal tank 12 fills water, when the differential pressure of water level that seal tank forms is greater than flue gas pressures, flue gas is cut off; Now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in closed condition; As shown in Figure 3.
In the time that water sealed tank need to be opened, by water entrance pipe 8, water in water sealed tank inner core 2 is bled off, along with the reduction of water level, floating storehouse 9 is supported seal tank 12 by guide thimble 10 and is synchronously declined, fall bottom, by water sealed tank now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in opening state for flue gas always; As shown in Figure 2.
By regenerated flue gas water sealed tank and the existing water sealed tank comparison of Fig. 1 of Fig. 2, be traditional water sealed tank to be carried out to local improvement become a kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank.
1. shorten flue gas smoke inlet 4, make its lower upper along concordant along with smoke outlet 3, flue gas enters and turns 90 ° after water sealed tank and just can go out like this, and the traditional water sealed tank pressure drop of flue gas pressure drop ratio is reduced more than 3/4.
2. in water sealed tank, set up floating storehouse 9, establish the unique spacer of multiple symmetries in the middle of floating storehouse, the top at each interval is provided with vent 7, each not intercommunication of interval, even if ensure that like this flooded condition appears in indivedual positions, the floating storehouse 9 of entirety still can be used.A seal tank 12 is established on 9 tops, floating storehouse, between floating storehouse 9 and seal tank 12, connect with 4 guide thimbles 10, guide thimble 10 can slide up and down in guide rod 11, at the bottom of guide rod 11 bottoms are fixed on and are separately fixed at water sealed tank and interior same 2 bottoms, top, through the pilot hole of guide support 13, can move up and down when in water sealed tank, temperature variation guide rod expands in the pilot hole of guide support 13.
3. newly increasing a water intake 14 on water sealed tank top, is seal tank 12 water fillings specially.
4. the length of flue gas smoke inlet 4, the opening high and low position of smoke outlet tube 3, the height of seal tank 12, volume, adjustable height and the water sealed tank overall structure size in floating storehouse are all passed through and are carried out strict calculative determination.
5. the closed condition of water sealed tank: as shown in Figure 3: a kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank (closed condition) is realized by following process: by water entrance pipe 8 to the water filling of water sealed tank inner core, when water level reach a certain height, floating storehouse 9 produces while being greater than its mutually all component weight linking together to buoyancy in water, along with supporting seal tank 12 by guide thimble 10 and synchronously float in the floating storehouse 9 of the rising of water level, in the time that inner core 2 heights of water level arrive flow-off pipe 6, water overflows by flow-off pipe, close water entrance pipe 8, stop to 2 water fillings of water sealed tank inner core, at this moment smoke inlet 4 embeds in seal tank 12 annular spaces completely, open water intake 14 to the interior water filling of seal tank 12, when seal tank 12 fills water, the differential pressure of water level that seal tank forms is greater than inlet flue gas pressure, flue gas is cut off.
Claims (3)
1. a low pressure drop catalytic cracking regenerated flue gas water sealed tank, comprise: water sealed tank housing 1, inner core 2, smoke outlet tube 3, flue gas inlet tube 4, flow-off pipe 6, it is characterized in that: also comprise: the opening closure of regenerated flue gas, described inner core 2 is provided with the opening closure of regenerated flue gas, the opening closure of described regenerated flue gas forms by floating storehouse 9, guide thimble 10, guide rod 11, seal tank 12, guide support 13, and described floating storehouse 9 connects and composes one by some guide thimbles 10 with seal tank 12; Describedly be nested with on guide rod vertical in inner core 2 11 to sleeve pipe 10, guide rod 11 upper ends are through in the pilot hole on guide support 13 fixing on flue gas inlet tube 4 inwalls; Guide rod 11 lower ends are separately fixed at water sealed tank housing 1 bottom and inner core 2 bottoms;
Wherein, inner core 2 bottoms are provided with the water entrance 8 rising or decline in floating storehouse 9, and inner core 2 middle parts are provided with the flow-off pipe 6 of sealing flue gas inlet tube 4 bottoms; The top corresponding with seal tank 12 is provided with the water intake 14 of sealing flue gas inlet tube 4 bottoms.
2. a kind of low pressure drop catalytic cracking regenerated flue gas water sealed tank according to claim 1, is characterized in that: described floating storehouse 9 by multiple symmetries independently interval cavity form, the top at each interval is provided with vent 7.
3. a low pressure drop catalytic cracking regenerated flue gas water sealed tank method of work, is characterized in that: its step is as follows:
1) flue gas inlet tube in water sealed tank housing 14 is shortened, make its lower along with the upper edge of smoke outlet tube 3 at a height, flue gas turns 90 ° and just can get rid of in water sealed tank like this, makes flue gas in water sealed tank internal drop minimizing 3/4;
2) in water sealed tank, increase a floating storehouse 9 and a seal tank 12, between floating storehouse 9 and seal tank 12, connect with 4 guide thimbles 10, guide thimble 10 can slide up and down in guide rod 11, guide rod 11 bottoms are separately fixed at 1 end of water sealed tank housing and inner core 2 bottoms, and guide rod 11 tops are through the pilot hole of guide support 13;
3), when in water sealed tank, temperature variation guide rod expands, the elongation that guide rod 11 expands can move up and down in the pilot hole of guide support 13; Specific works mode is as follows:
In the time that needs cut off flue gas, by water entrance pipe 8 to 2 water fillings of water sealed tank inner core, when water level reaches buoyancy position height, floating storehouse 9 produces to buoyancy in water, in the time that buoyancy is greater than all component weight linking together, along with supporting seal tank 12 by guide thimble 10 and synchronously float in the floating storehouse 9 of the rising of water level; In the time that height of water level arrives flow-off pipe 6, water level tops out, and at this moment smoke inlet pipe 4 embeds in seal tank 12 annular spaces completely, water intake 14 is opened, to the interior water filling of seal tank 12, when seal tank 12 fills water, when the differential pressure of water level that seal tank forms is greater than flue gas pressures, flue gas is cut off; Now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in closed condition;
In the time that water sealed tank need to be opened, by water entrance pipe 8, water in water sealed tank inner core 2 is bled off, along with the reduction of water level, floating storehouse 9 is supported seal tank 12 by guide thimble 10 and is synchronously declined, fall bottom, by water sealed tank now, low pressure drop catalytic cracking regenerated flue gas water sealed tank is in opening state for flue gas always.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084850.4A CN103883762A (en) | 2014-03-10 | 2014-03-10 | Low-pressure drop catalytic cracking regeneration flue gas water-sealed tank and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084850.4A CN103883762A (en) | 2014-03-10 | 2014-03-10 | Low-pressure drop catalytic cracking regeneration flue gas water-sealed tank and method thereof |
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| Publication Number | Publication Date |
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| CN103883762A true CN103883762A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410084850.4A Withdrawn CN103883762A (en) | 2014-03-10 | 2014-03-10 | Low-pressure drop catalytic cracking regeneration flue gas water-sealed tank and method thereof |
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| CN (1) | CN103883762A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482079A (en) * | 2019-01-28 | 2020-08-04 | 中国石油化工股份有限公司 | Catalytic regeneration flue gas denitration, dedusting and desulfurization system and depressurization method |
| CN112795388A (en) * | 2021-03-24 | 2021-05-14 | 冯进才 | Water seal valve and coke oven single carbonization chamber pressure regulating device |
-
2014
- 2014-03-10 CN CN201410084850.4A patent/CN103883762A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482079A (en) * | 2019-01-28 | 2020-08-04 | 中国石油化工股份有限公司 | Catalytic regeneration flue gas denitration, dedusting and desulfurization system and depressurization method |
| CN111482079B (en) * | 2019-01-28 | 2021-12-03 | 中国石油化工股份有限公司 | Catalytic regeneration flue gas denitration, dedusting and desulfurization system and depressurization method |
| CN112795388A (en) * | 2021-03-24 | 2021-05-14 | 冯进才 | Water seal valve and coke oven single carbonization chamber pressure regulating device |
| CN112795388B (en) * | 2021-03-24 | 2022-02-22 | 中企智造(天津)智能科技股份有限公司 | Water seal valve and coke oven single carbonization chamber pressure regulating device |
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Application publication date: 20140625 |