CN206244735U - Lurgi gasifier ash lock pressure relief system - Google Patents
Lurgi gasifier ash lock pressure relief system Download PDFInfo
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- CN206244735U CN206244735U CN201621230064.1U CN201621230064U CN206244735U CN 206244735 U CN206244735 U CN 206244735U CN 201621230064 U CN201621230064 U CN 201621230064U CN 206244735 U CN206244735 U CN 206244735U
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Abstract
The utility model is related to a kind of Lurgi gasifier ash lock pressure relief system, belong to gasification furnace technical field, there is provided a kind of simple structure, it is easy to operate, improvement cost, ensure continuous production, improve the Lurgi gasifier ash lock pressure relief system of raw gas yield, the technical scheme for being used is provided with main pressure relief pipe for the bottom of expansion condenser, main relief valve is provided with main pressure relief pipe, the bottom of expansion condenser is additionally provided with standby pressure relief pipe, and standby relief valve is provided with standby pressure relief pipe, and main pressure relief pipe and standby pressure relief pipe are connected with slag bath；The utility model is widely used in the pressure release of Lurgi gasifier.
Description
Technical field
The utility model is related to a kind of Lurgi gasifier ash lock pressure relief system, belongs to gasification furnace technical field.
Background technology
At present, in existing Lurgi gasifier running, ash lock blowdown line is mainly the gas of pressure 3.0Mpa
Let out to normal pressure by condensing expander, enter slag runner.Ash locks valve under normal condition, is always maintained at open position, in by ash shape
State.Fire grate is by uninterrupted rotation, it is ensured that gasification hearth layer stabilization, uniform air distribution, every technic index is in normal model
Within enclosing.
But a variety of restrictions are there are during day-to-day operation：Due to filling containing a large amount of fine ash in buck, and for a long time
Operation causes equipment attrition, the reason such as cause expansion condenser central tube umbrella crown and liner plate to come off, and causes ash lock blowdown line frequently
Numerous blocking, so that pressure release is difficult.Gasification furnace fire grate is thereby resulted in for a long time in stop state, must now be taken at load down
Reason, so as to cause system fluctuation, raw gas yield declines.
Utility model content
To solve the technical problem that prior art is present, the utility model provides a kind of simple structure, easy to operate, changes
Cause this, it is ensured that continuous production, improve the Lurgi gasifier ash lock pressure relief system of raw gas yield.
To achieve the above object, the technical scheme that the utility model is used is Lurgi gasifier ash lock pressure relief system, bag
Include：Ash lock and expansion condenser, the bottom of the expansion condenser are provided with main pressure relief pipe, are set on the main pressure relief pipe
The bottom for having main relief valve, the expansion condenser is additionally provided with standby pressure relief pipe, is provided with the standby pressure relief pipe
Standby relief valve, the main pressure relief pipe and standby pressure relief pipe are connected with slag bath.
Preferably, pressure sensor is provided with the ash lock, the main relief valve and standby relief valve are motor-driven valve,
The pressure sensor, main relief valve are connected with the signal input part of microprocessor, the signal output part of the microprocessor
It is connected with standby relief valve by relay, the microprocessor is also connected by triggers circuit with alarm.
Preferably, the alarm is audible-visual annunciator.
Compared with prior art, the utility model has following technique effect：The utility model simple structure, operation side
Just, improvement cost is low, and main pressure relief pipe and standby pressure relief pipe are set using in expansion condenser bottom, it is to avoid with pressure to open and inspect
The potential safety hazard that main relief valve is caused；Simultaneously the gasification furnace caused by expansion condenser central tube umbrella crown and liner plate come off is avoided to stop
Car, influences the yield of raw gas.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is control principle block diagram of the present utility model.
Specific embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, are further elaborated to the utility model.It should be appreciated that specific reality described herein
Apply example to be only used to explain the utility model, be not used to limit the utility model.
As shown in Figure 1 and Figure 2, Lurgi gasifier ash lock pressure relief system, including：Ash lock 1 and expansion condenser 2, expansion condensation
The bottom of device 2 is provided with main pressure relief pipe 3, and main relief valve 4 is provided with main pressure relief pipe 3, and the bottom of expansion condenser 2 also sets
Standby pressure relief pipe 5 is equipped with, standby relief valve 6, main pressure relief pipe 3 and the tunnel of standby relief tube 5 are provided with standby pressure relief pipe 5
It is connected with slag bath.
Wherein, pressure sensor 7 is provided with ash lock 1, main relief valve 4 and standby relief valve 6 are motor-driven valve, and pressure is passed
Sensor 7, main relief valve 4 are connected with the signal input part of microprocessor, the signal output part of microprocessor by relay with
Standby relief valve 6 is connected, and microprocessor is also connected by triggers circuit with alarm, and alarm is audible-visual annunciator.
During stable operation, ash lock normal pressure is 3.0Mpa to gasification furnace.During ash lock pressure release after expanding condensation,
After pressure is rapidly decreased into 0.2Mpa, opens main relief valve and drain the buck in expansion condenser, after pressure is let out only, then open
Ash lock lower valve, system carries out ash discharge.After ash discharge terminates, then water will be full of by flashing valve in expansion condenser, close lower valve, filled
It is depressed into after 3.0MPa and opens upper valve again and start by ash.
When blocking occurs in the ash main relief valve of lock, when pressure release is difficult, pressure sensor and main relief valve opening amount signal are sent to
Microprocessor, microprocessor judges whether main relief valve blocks according to preset signals；When main pressure release valve opening is maximum, and ash lock
When pressure is constant or reduces slower, judge that main relief valve is blocked, microprocessor control relay obtains electric, and standby relief valve is beaten
Open, pressure release is carried out by standby pressure relief pipe, effectively prevent because main relief valve is blocked causes system load down disposition
Generation, also eliminate open and inspect potential safety hazard present in main relief valve process in addition.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., all should wrap in the utility model model
In enclosing.
Claims (3)
1. Lurgi gasifier ash locks pressure relief system, including：Ash lock and expansion condenser, it is characterised in that：The expansion condenser
Bottom be provided with main pressure relief pipe, main relief valve is provided with the main pressure relief pipe, the bottom of the expansion condenser is also
Standby pressure relief pipe is provided with, standby relief valve is provided with the standby pressure relief pipe, the main pressure relief pipe and standby let out
Pressure pipe Lu Junyu slag baths are connected.
2. Lurgi gasifier ash according to claim 1 locks pressure relief system, it is characterised in that：Pressure is provided with the ash lock
Force snesor, the main relief valve and standby relief valve are motor-driven valve, the pressure sensor, main relief valve and microprocessor
Signal input part be connected, the signal output part of the microprocessor is connected by relay with standby relief valve, described
Microprocessor is also connected by triggers circuit with alarm.
3. Lurgi gasifier ash according to claim 2 locks pressure relief system, it is characterised in that：The alarm is acousto-optic report
Alert device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621230064.1U CN206244735U (en) | 2016-11-16 | 2016-11-16 | Lurgi gasifier ash lock pressure relief system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621230064.1U CN206244735U (en) | 2016-11-16 | 2016-11-16 | Lurgi gasifier ash lock pressure relief system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206244735U true CN206244735U (en) | 2017-06-13 |
Family
ID=59000348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621230064.1U Active CN206244735U (en) | 2016-11-16 | 2016-11-16 | Lurgi gasifier ash lock pressure relief system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206244735U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440389A (en) * | 2019-08-15 | 2019-11-12 | 重庆众夏科技有限公司 | A kind of fire-fighting emergent evacuation overbottom pressure monitoring method and system |
-
2016
- 2016-11-16 CN CN201621230064.1U patent/CN206244735U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440389A (en) * | 2019-08-15 | 2019-11-12 | 重庆众夏科技有限公司 | A kind of fire-fighting emergent evacuation overbottom pressure monitoring method and system |
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