A kind of gasification furnace Quench tank circulation for coal gasification apparatus
Technical field
This utility model belongs to technical field of coal chemical industry, particularly relates to a kind of gasification furnace Quench tank for coal gasification apparatus and circulates
Water system.
Background technology
Coal is one of main fossil energy of China, occupies considerable status in China's energy production structure, the most each
In level energy consumption structure, coal consumption accounts for the 2/3 of total amount consumed.World petroleum resource is in short supply so that Coal Chemical Industry petroleum replacing
The development trend of chemical industry is the rapidest.Modern New Coal Chemical Industry to produce clean energy resource and the product of alternative petrochemical industry,
The most state-of-the-art gasification furnace represent technology have shell stove, GSP stove, space flight stove, Huaneng Group stove, section's woods stove, Texaco stove, four
Nozzle water-coal slurry furnace etc..
The circulation of gasification furnace Quench tank water system, even if in this technique under whole audience power-off condition, gas is related in these coal gasification apparatus
Changing stove Quench tank Quench water pump can not be out of service, therefore, it is necessary to configuration first order load is powered, in order under blackout condition
Stand-by power supply can be started immediately, it is ensured that gasification furnace Quench tank Quench water pump runs continuously, thus protects gasification furnace Quench tank.One
What stage load was powered involves great expense, and adds the operating cost of whole device, is not suitable for middle-size and small-size chemical enterprise;If one-level
Load is powered and is come into operation the most in time, easily causes gasification furnace Quench tank and damages, causes the generation of security incident, reduce whole
Reliability of technology so that technique does not reaches essential safety.
Utility model content
The purpose of this utility model is: the shortcoming overcoming prior art, it is provided that a kind of economical and practical for coal gasification apparatus,
Cheap, safe and reliable gasification furnace Quench tank circulation.
The purpose of this utility model is realized by following technical proposals:
A kind of gasification furnace Quench tank circulation for coal gasification apparatus, including gasification furnace Quench tank and at least one gasification
Stove Quench tank Quench water pump, gasification furnace Quench tank Quench water pump is additionally provided with at least one buffering accident between gasification furnace Quench tank
Water pot, there is positive differential pressure in buffering accident water pot between gasification furnace Quench tank, this positive differential pressure meets gasification furnace Quench tank chilled water
When pump is shut down, from the unimodal current power of buffering accident water tank to gasification furnace Quench tank.
As selection, between buffering accident water pot to gasification furnace Quench tank, positive differential pressure is 0.01~10MPa.
As selection, it is passed through gas in buffering accident water pot and forms this positive differential pressure.
As selecting further, be passed through in buffering accident water pot gas control operation pressure in buffering accident water pot be 0.01~
10MPa。
As selection, buffering accident water pot position height forms this positive differential pressure higher than gasification furnace Quench tank.
As selection, being passed through gas in buffering accident water pot, simultaneous buffering accident water pot position height is higher than gasification furnace Quench tank,
In order to form this positive differential pressure.
As selection, in parallel between multiple buffering accident water pots.
As selection, in parallel between multiple gasification furnace Quench tank Quench water pumps.
As selection, the aforementioned gas in order to form positive differential pressure is nitrogen or carbon dioxide or synthesis gas.
As selection, between gasification furnace Quench tank and gasification furnace Quench tank Quench water pump, it is additionally provided with the water treatment system of gasification installation.
Aforementioned this utility model main formula case and each further selection scheme thereof can be this with independent assortment to form multiple schemes
Utility model can use and claimed scheme: such as this utility model, each non conflicting gets final product combination in any between selecting, this
Skilled person can understand there is multiple combination according to prior art and common knowledge after understanding the present invention program, is this reality
By novel claimed technical scheme, do not do exhaustive at this.
Workflow of the present utility model:
Being provided with buffering accident water pot between gasification furnace Quench tank and gasification furnace Quench tank Quench water pump, chilled water passes through Quench tank
Quench water pump pressurizes, and after entering buffering accident water pot, when gasification furnace Quench tank Quench water pump shuts down, chilled water relies on slow
Rush the pressure reduction between accident water pot and gasification furnace Quench tank and realize flowing, enter gasification furnace Quench tank and realize the cooling of equipment internals,
Chilled water flows out from gasification furnace Quench pot bottom, to the water treatment system of gasification installation.
This pressure reduction can be formed in several ways, such as, is passed through gas from buffering accident water tank top and keeps buffering accident water
In tank, operation pressure is 0.01~10MPa, and the liquid level of buffering accident water pot is for maintaining gasification furnace Quench tank required when stopping
Cooling water inflow.
The beneficial effects of the utility model:
(1) this utility model utilizes buffering accident water pot gravity flow principle, reduces the configuration that in circulation, first order load is powered,
Decrease the input of equipment, reduce the cost of equipment investment;
(2) this utility model makes this gasification furnace Quench tank circulation safe and reliable feasible;
(3) this utility model fundamentally protects the gasification furnace Quench tank in coal gasification apparatus, eliminates owing to first order load supplies
Electricity breaks down and damages the probability of gasification furnace Quench tank, slow down the damage of gasification furnace Quench tank, reduces running
In maintenance cost.
Accompanying drawing explanation
Fig. 1 is the device schematic flow sheet of this utility model embodiment;
Logistics labelling in flow chart: 1-is from the gas of synergic system or gasification furnace exiting syngas;
Arrow mark in flow chart: chilled water flows to;
Equipment, instrument markings in flow chart: 2-buffering accident water pot, 3-gasification furnace Quench tank, 4-Quench tank Quench water pump,
5-water treatment system.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, this utility model is further described.
With reference to shown in Fig. 1, a kind of gasification furnace Quench tank circulation for coal gasification apparatus, including gasification furnace Quench tank 3
With at least one gasification furnace Quench tank Quench water pump 4, also set between gasification furnace Quench tank Quench water pump 4 to gasification furnace Quench tank 3
There is at least one buffering accident water pot 2, there is positive differential pressure between buffering accident water pot 2 to gasification furnace Quench tank 3, this positive differential pressure
Meet gasification furnace Quench tank Quench water pump 4 when shutting down, move from the unimodal current of buffering accident water tank 2 to gasification furnace Quench tank 3
Power.As preferably, between buffering accident water pot 2 to gasification furnace Quench tank 3, positive differential pressure is 0.01~10MPa.Form this malleation
The mode of difference has multiple, such as, is passed through gas and forms this positive differential pressure in buffering accident water pot 2, logical in buffering accident water pot 2
Entering in gas controls buffering accident water pot 2 to operate pressure is 0.01~10MPa;Or, buffering accident water pot 2 position height is high
This positive differential pressure is formed in gasification furnace Quench tank 3;Or, in buffering accident water pot 2, it is passed through gas, simultaneous buffering accident water pot 2
Position height is higher than gasification furnace Quench tank 3, in order to form this positive differential pressure.As selection, as shown in the present embodiment Fig. 1, buffering
Accident water pot 2 is one, when buffering accident water pot 2 is multiple, in parallel between multiple buffering accident water pots 2;As choosing
Selecting, as shown in the present embodiment Fig. 1, gasification furnace Quench tank Quench water pump 4 is one, when gasification furnace Quench tank Quench water pump 4
For time multiple, in parallel between multiple gasification furnace Quench tank Quench water pumps 4, formation is backed up.
Gasification furnace Quench tank circulation of the present utility model carries out flow process description further:
With reference to shown in Fig. 1, between gasification furnace Quench tank 3 and gasification furnace Quench tank Quench water pump 4, it is provided with buffering accident water pot 2,
Chilled water enters buffering accident water pot 2 by the pressurization of Quench tank Quench water pump 4, is passed through gas 1 from buffering accident water tank 2 top
Operating pressure in keeping buffering accident water pot 2 is 0.01~10MPa, and the liquid level of buffering accident water pot 2 is used for maintaining gasification furnace to swash
The cooling water inflow that cold tank 3 is required when stopping.When gasification furnace Quench tank Quench water pump 4 shuts down, and gasification furnace recirculated water depends on
Realize flowing by the pressure reduction between buffering accident water pot 2 and gasification furnace Quench tank 3, enter gasification furnace Quench tank 3 and realize equipment
The cooling of internals, chilled water flows out bottom gasification furnace Quench tank 3, to the water treatment system 5 of gasification installation.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Any amendment, equivalent and the improvement etc. made within novel spirit and principle, should be included in guarantor of the present utility model
Within the scope of protecting.