CN202725146U - Process air fan and instrument air fan complementary standby system - Google Patents
Process air fan and instrument air fan complementary standby system Download PDFInfo
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- CN202725146U CN202725146U CN 201220240473 CN201220240473U CN202725146U CN 202725146 U CN202725146 U CN 202725146U CN 201220240473 CN201220240473 CN 201220240473 CN 201220240473 U CN201220240473 U CN 201220240473U CN 202725146 U CN202725146 U CN 202725146U
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- blower fan
- air blower
- instrument
- valve
- isolating valve
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Abstract
The utility model relates to a process air fan and instrument air fan complementary standby system. A communicating valve is added between an outlet pipeline of a process air fan and an outlet pipeline of an instrument air fan; furthermore, two branch pipes are led out of a 3.5-MPa high-pressure nitrogen main pipe through pressure reduction and are respectively connected to a process air storage tank and an instrument air storage tank; and a corresponding isolation valve is added. When the process air fan and the instrument air fan fail, the corresponding valves are adjusted, so that the system can operate without being stopped; and moreover, time for overhauling a failed fan is earned; and system production is stabilized.
Description
Technical field
The utility model relates to the reaction-regenerative system in fluid catalytic cracking, the fluid bed methanol-to-olefins device.
Background technology
The devices such as fluid catalytic cracking, fluid bed methanol-to-olefins all respond-and regenerative system, cleaning system, absorbing-stabilizing system, product purification system and other accessory system form.Reaction-regenerative system comprises that mainly reactive moieties, regenerating section, catalyst stores and transport portion, main air partly form.Reactive moieties has special purpose reactor (riser), and the abundant haptoreaction of raw material heavy oil, residual oil or methyl alcohol and catalyst generates gasoline, diesel oil or low-carbon alkene, and post catalyst reaction is inactivation partially or completely, and the catalyst of inactivation send regenerative system regeneration; Regenerating section contains regenerator, and the regeneration main air is provided by the regeneration air blower fan, and oxygen combustion in the catalyst of inactivation (carbon distribution) and the air is finished coke combustion, makes the catalyst activity recovery; Catalyst stores and transport portion comprise catalyst storage tank, catalyst adds the agent line, the catalyst discharge line, catalyst is 60-80 micron superfine powdery particle, usually first catalyst is delivered to the regenerator from holding vessel, catalyst after regeneration is made charcoal is transferred to (by pressure reduction in regenerator and the reactor) in the reactor again, the catalyst of reaction inactivation returns regenerator regeneration (carrying with promoting steam) again, catalyst is finished a cyclic process, the catalyst of system consumption by holding vessel fresh catalyst make-up in system, and crucial add agent and replenish the needed air of process and provided by the plant air blower fan; The instrument air of the Self controlling valves such as whole system pressure, flow, Liquid level adjusting valve, stop valve, pressure-reducing valve, atmospheric valve is provided by the instrument air blower fan.Wherein the regeneration air blower fan is low pressure and mass flow (0.35MPa, 1500-3500m
3/ h), and plant air and instrument air blower fan are high pressure low discharge (0.65MPa, 200-450m
3/ h is for the regeneration air blower fan).Three Fans wherein any one break down, all may cause reaction-regenerative system to stop, the then purification of postorder, absorb stable, product purification system and all need to stop comprehensively, the steady and continuous of visible wind turbine is moved most important.
The utility model content
The technical problem that the utility model solves provides a kind of complementary back-up system of plant air blower fan, instrument air blower fan that is applied in the devices such as fluid catalytic cracking, fluid bed methanol-to-olefins, purpose is to make plant air, instrument air blower fan for subsequent use each other, and the rear nitrogen of decompression is done interim replenishing by reference, effectively avoid the urgent temporary parking of device, systems stabilisation is produced, for overhaul of the equipments is raced against time.
A kind of plant air blower fan, the complementary back-up system of instrument air blower fan are set up communicating valve and connecting pipeline at plant air blower fan and instrument air fan outlet pipeline; Draw arm from 3.5MPa high pressure nitrogen house steward, be decompressed to 0.65MPa through pressure-reducing valve and access respectively on process gas air accumulator and the instrument supply gas air accumulator, set up isolating valve, one and isolating valve, two before entering tank; Enter separately at instrument air blower fan, plant air fan outlet and to set up isolating valve, three and isolating valve, four before the air accumulator.
The utility model is by setting up communicating valve between plant air fan outlet pipeline and instrument air fan outlet pipeline, draw the two-way arm from 3.5MPa high pressure nitrogen house steward through decompression in addition, be connected on respectively on process gas air accumulator and the instrument supply gas air accumulator, and set up corresponding isolating valve,, when above two blower fans broke down, by regulating respective valves, the realization system is shut-down operation not, simultaneously also for the fault maintenance of fan is full of to get the time, systems stabilisation production.
Plant air blower fan of the present utility model, the complementary back-up system of instrument air blower fan, preferred embodiment is: comprise plant air blower fan, instrument air blower fan, regeneration air blower fan; Outlet conduit at described plant air blower fan and instrument air blower fan is provided with communicating valve and connecting pipeline; The outlet conduit of described plant air blower fan connects fore filter one, isolating valve, four and process gas air accumulator successively after communicating valve, another import of process gas air accumulator connects 3.5MPa high pressure nitrogen house steward by isolating valve, two; The outlet conduit of described instrument air blower fan connects fore filter two after communicating valve, after described fore filter two, connect low-grade fever regeneration adsorption dehumifier one in parallel and low-grade fever regeneration adsorption dehumifier two, then connect isolating valve, three and instrument supply gas air accumulator, another import of instrument supply gas air accumulator connects 3.5MPa high pressure nitrogen house steward by isolating valve, one.
Description of drawings
Fig. 1 is the schematic diagram of the utility model system.
The specific embodiment
For further specifying the utility model, specify with the following Examples:
Embodiment:
Former air blower system flow is:
The regeneration air blower fan after the blower fan pressurization, send regenerator for Burning Coke on Catalyst regeneration by unit top air amount.
The instrument air blower fan also is by blower fan top air amount, through pressurization, again through fore filter 26 and low-grade fever regeneration adsorption dehumifier (two covers, for subsequent use each other, a use, another regeneration) advance the instrument supply gas air accumulator, after buffering, send the instrument air house steward for the postorder system.
Plant air advances the process gas air accumulator through fore filter 1 after the blower fan pressurization, send the plant air house steward for the postorder system after buffering.
Wind turbine compressor cooling open the cooling water main valve and separately unit advance, the back-water valve (BWV) realization.
System after the utility model improves is:
Set up communicating valve 4 and connecting pipeline at plant air blower fan 1 and instrument air blower fan 2 outlet conduits; Draw arm from 3.5MPa high pressure nitrogen house steward, be decompressed to 0.65MPa through pressure-reducing valve and access respectively on process gas air accumulator 11 and the instrument supply gas air accumulator 12, set up isolating valve, 1 and isolating valve, 2 14 before entering tank; Enter separately at instrument air blower fan, plant air fan outlet and to set up isolating valve, 3 15 and isolating valve, 4 16 before the air accumulator.
System's concrete structure is (as shown in Figure 1):
Comprise plant air blower fan 1, instrument air blower fan 2, regeneration air blower fan 3; Outlet conduit at plant air blower fan 1 and instrument air blower fan 2 is provided with communicating valve 4 and connecting pipeline; The outlet conduit of plant air blower fan 1 connects fore filter 1, isolating valve, 4 16 and process gas air accumulator 11 successively after communicating valve 4,11 another imports of process gas air accumulator connect 3.5MPa high pressure nitrogen house steward by isolating valve, 2 14; The outlet conduit of instrument air blower fan 2 connects fore filter 26 after communicating valve 4, the low-grade fever regeneration adsorption dehumifier 1 and low-grade fever regeneration adsorption dehumifier two 10(that connect parallel connection after fore filter 26 wherein are provided with oil removal filter 7 before the low-grade fever regeneration adsorption dehumifier 1, after be provided with post-filter 9), then connect isolating valve, 3 15 and instrument supply gas air accumulator 12,12 another imports of instrument supply gas air accumulator connect 3.5MPa high pressure nitrogen house steward by isolating valve, 1.
Use procedure: in the normally driving situation, communicating valve 4 is closed, and isolating valve, 3 15, isolating valve, 4 16 are opened, and isolating valve, 1, isolating valve, 2 14 are closed.
If emergency appears in the plant air blower fan, method is emergency cut-off plant air fan outlet valve 1., closes isolating valve, four, open isolating valve, two, regulating the high pressure nitrogen pressure-reducing valve is 0.65MPa, enters the process gas air accumulator with post-decompression nitrogen, send the plant air house steward for rear system after the buffering.Method is emergency cut-off plant air fan outlet valve 2., open communicating valve, close fore filter two valve groups and isolating valve, three, open isolating valve, one, after advancing fore filter one, process gas air accumulator, communicating valve fills into the plant air house steward with instrument air blower fan compressed gas, regulating the high pressure nitrogen pressure-reducing valve is 0.65MPa, enters the instrument air air accumulator with post-decompression nitrogen and fills into the instrument air house steward.
If emergency appears in the instrument air blower fan, method is emergency cut-off instrument air fan outlet valve 1., closes isolating valve, three, open isolating valve, one, regulating the high pressure nitrogen pressure-reducing valve is 0.65MPa, enters the instrument supply gas air accumulator with post-decompression nitrogen, send the instrument air house steward for rear system after the buffering.Method is emergency cut-off instrument air fan outlet valve 2., open communicating valve, close fore filter one valve group and isolating valve, four, open isolating valve, two, after advancing fore filter two, low-grade fever regeneration adsorption dehumifier one or two, instrument supply gas air accumulator, communicating valve fills into the instrument air house steward with technique air blower compressed gas, regulating the high pressure nitrogen pressure-reducing valve is 0.65MPa, enters the plant air air accumulator with post-decompression nitrogen and fills into the plant air house steward for rear system.
The employing of said method is accomplished safety, smooth transition to reduce system fluctuation as principle as far as possible, accelerates the repairing work of fault blower fan when process gas, instrument supply gas replace usefulness each other.
Above-described embodiment is described preferred embodiment of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineers and technicians in this area make the technical solution of the utility model all should fall in the definite protection domain of claims of the present utility model.
Claims (2)
1. a plant air blower fan, the complementary back-up system of instrument air blower fan is characterized in that: set up communicating valve (4) and connecting pipeline at plant air blower fan (1) and instrument air blower fan (2) outlet conduit; Draw arm from 3.5MPa high pressure nitrogen house steward, be decompressed to 0.65MPa through pressure-reducing valve and access respectively on process gas air accumulator (11) and the instrument supply gas air accumulator (12), set up isolating valve, one (13) and isolating valve, two (14) before entering tank; Before instrument air blower fan, plant air fan outlet enter separately air accumulator, set up isolating valve, three (15) and isolating valve, four (16).
2. plant air blower fan according to claim 1, the complementary back-up system of instrument air blower fan is characterized in that: comprise plant air blower fan (1), instrument air blower fan (2), regeneration air blower fan (3); Outlet conduit at described plant air blower fan (1) and instrument air blower fan (2) is provided with communicating valve (4) and connecting pipeline; The outlet conduit of described plant air blower fan (1) connects fore filter one (5), isolating valve, four (16) and process gas air accumulator (11) afterwards successively at communicating valve (4), and another import of process gas air accumulator (11) connects 3.5MPa high pressure nitrogen house steward by isolating valve, two (14); The outlet conduit of described instrument air blower fan (2) connects fore filter two (6) afterwards at communicating valve (4), connect afterwards low-grade fever regeneration adsorption dehumifier one (8) in parallel and low-grade fever regeneration adsorption dehumifier two (10) at described fore filter two (6), then connect isolating valve, three (15) and instrument supply gas air accumulator (12), another import of instrument supply gas air accumulator (12) connects 3.5MPa high pressure nitrogen house steward by isolating valve, one (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240473 CN202725146U (en) | 2012-05-25 | 2012-05-25 | Process air fan and instrument air fan complementary standby system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220240473 CN202725146U (en) | 2012-05-25 | 2012-05-25 | Process air fan and instrument air fan complementary standby system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202725146U true CN202725146U (en) | 2013-02-13 |
Family
ID=47650898
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220240473 Expired - Fee Related CN202725146U (en) | 2012-05-25 | 2012-05-25 | Process air fan and instrument air fan complementary standby system |
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| CN (1) | CN202725146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671583A (en) * | 2012-05-25 | 2012-09-19 | 安徽淮化股份有限公司 | Complementary standby system for process air blower and instrument air blower |
-
2012
- 2012-05-25 CN CN 201220240473 patent/CN202725146U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102671583A (en) * | 2012-05-25 | 2012-09-19 | 安徽淮化股份有限公司 | Complementary standby system for process air blower and instrument air blower |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20160525 |