CN207031371U - Synthesis gas soaks washing system - Google Patents
Synthesis gas soaks washing system Download PDFInfo
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- CN207031371U CN207031371U CN201720590602.6U CN201720590602U CN207031371U CN 207031371 U CN207031371 U CN 207031371U CN 201720590602 U CN201720590602 U CN 201720590602U CN 207031371 U CN207031371 U CN 207031371U
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Abstract
The utility model discloses a kind of synthesis gas to soak washing system, including synthesis gas washing tower, Venturi scrubber, Quench water pump and venturi water pump；Synthesis gas washing tower epimere is washing section, includes the catch box with airway tube, gas block panel and washing separation assembly, hypomere is segregation section, includes solid particle separation assembly；Washing section end has clean Heisui River outlet to connect chilling train by Quench water pump；The outlet of segregation section end You Hangu Heisui River connects Venturi scrubber by venturi water pump.The utility model in scrubbing tower by setting the catch box with airway tube, set up the internals for strengthening liquid-solid phase separation, and optimize Heisui River and utilize flow, flow path, the way of contact and residence time in tower containing admittedly wet synthesis gas are on the one hand changed, improves the clean result of synthesis gas；On the other hand the shunting in the high Heisui River of solid content and the low Heisui River of solid content is realized, clean Heisui River is used for synthesis gas Quench, alleviates the obstruction and wear problem of Quench water system.
Description
Technical field
Coal chemical technology is the utility model is related to, more particularly to the synthesis gas wetting for hydrocarbon gasification installation
Washing system.
Background technology
So far, gasification is still the most effective mode of the hydrocarbon fuel such as extensive, efficient, clean utilization coal, and
The leading technology of related chemical process.It is fuel used including the even hydrocarbon combustion of broad sense such as rubbish of coal, petroleum coke, pitch, biomass
Material.Entrained flow bed gasification technology, because production intensity is big, the feature of environmental protection is strong, is the mainstream technology in Coal Gasification Technology.
Entrained flow gasification reacts, and is to be gasified by coal or other hydrocarbons by slurry or Geldart-D particle with oxygen
Partial oxidation reaction occurs in stove, generates synthesis gas.The main component of synthesis gas is hydrogen and carbon monoxide, also a small amount of water
Steam, carbon dioxide, hydrogen sulfide, methane and nitrogen, any traces of carbonyl sulfide (COS) etc., and be grouped by the ash in carbon residue and raw material
Into melt cinder.Therefore, in order to obtain useful being effectively synthesized gas (carbon monoxide and hydrogen), it is necessary to cooling and removing solid.
The high-temperature synthesis gas come out from gasification furnace, adds the combination work of waste heat boiler by Quench or waste heat boiler, or Quench
Skill, after temperature drops to saturation temperature corresponding to synthesis atmospheric pressure, enter back into synthesis gas wetting and washing system.
Typical synthesis gas wetting and washing system are Venturi scrubber, scrubbing tower and Quench water pump.As shown in figure 1,
After the crude synthesis gas come out from shock chamber initially enters Venturi scrubber, and venturi feedwater mixing wetting, washing is entered back into
Tower.In scrubbing tower, synthesis gas is further washed with process water (condensate liquid, high pressure buck and boiler feedwater), to reduce synthesis
Solids content in gas (be expected to be less than 1mg/m by solid content3)。
Typical synthesis gas wetting and washing system, as shown in figure 1, internal be equipped with is used to remove synthesis gas entrained solid
With the internals of drop, such as gas distributor, down-comer/tedge, tower tray and demister etc..Synthesis gas and process water are in tower tray
Locate counter current contacting, the synthesis gas after washing leaves at the top of scrubbing tower.Pressed from both sides in water (Heisui River) after washing containing partially synthetic gas
A large amount of solids of band, most of Heisui River is followed by Quench water pump goes bad back synthesis gas chilling train (gasification furnace and Venturi scrubber)
Further utilize, small part Heisui River is discharged to flash system.
The problem of this scrubbing tower is present be：
(1) substantial amounts of solid is contained in wash tower bottoms Heisui River.Because the turbulence of wash tower bottoms Heisui River is severe, chilling ring is removed
Heisui River inevitably also by entrainment portions solid, so as to cause chilled water plugged filter, Quench waterpipe, valve and
Pump serious wear etc., or even because wearing chilling ring down-comer can be caused to burn.
(2) due to synthesis gas entrainment portions solid, in the case of water degradation, operation working conditions change, easily cause to moisten
Wet and clean result is deteriorated, so as to cause synthesis gas band grey.Synthesis gas band ash, can bring detrimental effect to downstream units, than
Such as heat exchanger blocks and exchange capability of heat declines, change furnace pressure difference increases and catalyst reaction activity decrease.
(3) gasification furnace is gone to be used for the Quench water-carrying capacity of synthesis gas Quench easily by removing Venturi scrubber all the way in addition
The influence in Heisui River, cause chilled water flowed fluctuation and cause the fluctuation of gasification furnace shock chamber liquid level, serious meeting causes gasification furnace
Scram.
Utility model content
One of the technical problems to be solved in the utility model is to provide a kind of new synthesis gas wetting washing system, and it can
To improve the clean result of synthesis gas, alleviate the obstruction and wear problem of Quench water system, improve the stability of Quench water-carrying capacity.
In order to solve the above technical problems, synthesis gas wetting washing system of the present utility model, including synthesis gas washing tower, text
Washer, Quench water pump and venturi water pump in mound；Wherein：
The synthesis gas washing tower includes upper and lower two sections, and epimere is washing section, includes catch box, gas block panel and washing
Separation assembly, hypomere are segregation section, include solid particle separation assembly；The catch box carries airway tube, the gas block panel
Positioned at the top of the airway tube, the washing separation assembly is located at the top of the catch box and gas block panel；The scrubbing tower
Top is provided with the syngas outlet after washing, and washing section end is provided with clean Heisui River outlet, and segregation section end and bottom are opened respectively
Have and exported containing solid Heisui River；The clean Heisui River outlet connects with the catch box；The washing section of the scrubbing tower is provided with technique and washed
Fluid intake is washed, segregation section is provided with synthesis gas entrance to be washed；
The Venturi scrubber passes through the pipeline outlet with the venturi water pump, the outlet of gasification furnace synthesis gas respectively
And segregation section synthesis gas entrance connection to be washed；The entrance of the venturi water pump passes through pipeline and the scrubbing tower segregation section
End connects containing solid Heisui River outlet；The entrance of the Quench water pump is gone out by pipeline and the clean Heisui River of the washing section end
Mouth connection, outlet are connected by pipeline with chilling train.
The washing separation assembly can use tower tray and demister.The tower tray can use solid valve, or solid valve and
The combination of bubble-cap.The demister can use baffle plate demister, or the combination of spiral board demister and baffle plate demister.
Include liquid conduits in demister.
The solid particle separation assembly can use the combination of down-comer and tedge.Down-comer one end connects scrubbing tower
The synthesis gas entrance to be washed of segregation section, the other end extend downwardly into tedge.Tedge both ends open, top can further be set
Put gas block panel.Preferably, further it can also can be arranged on rising comprising separation grid, grid in solid particle separation assembly
The both sides of pipe, for preventing bulky grain solid from entering venturi water pump and Venturi scrubber.
The solid particle separation assembly can also use built-in cyclonic separation sub-assembly.
The technique wash fluid entrance has more than 2, is opened in respectively in the side wall of scrubbing tower washing section different height.
The segregation section bottom is connected containing solid Heisui River outlet by pipeline with black water treatment system.
The Quench water pump and venturi water pump can use variable frequency pump.
Compared with existing wetting washing system, synthesis gas of the present utility model soaks washing system, have advantages below and
Beneficial effect：
1. by setting the catch box with airway tube in original one-part form scrubbing tower, scrubbing tower is divided into washing section and divided
From section, the shunting in the few clean Heisui River of solid content and the high Heisui River of solid content is realized, the few clean Heisui River of solid content is from washing
The catch box discharge of tower epimere, enters synthesis gas chilling train by pump, for synthesis gas Quench, so as to effectively slow down at present
The Quench water system (pipeline and valve, filter, Quench water pump and chilling ring) of generally existing is easily blocked, fouling and abrasion are asked
Topic, reduces the fault rate, maintenance load and maintenance difficulties of Heisui River system, adds the reliability of system and online rate.
2. strengthening the internals that liquid phase and solid phase separate by setting up, and change flow setting, change containing solid wet synthesis
Flow path of the gas inside scrubbing tower, enhances the way of contact of gas-liquid-solid three-phase, and synthesis gas needs to additionally go through scrubbing tower
The airway tube of catch box and the baffle plate at the top of it carry out being classified washing and are classified foam removal, so improve the washing effect of synthesis gas
Fruit.
3. by setting the single loop of the chilled water from scrubbing tower to gasification furnace, reduce the influence in other loops, keep away
Exempt from interference of the venturi water loop to the Quench water-carrying capacity for chilling ring, improve reliability and the shock chamber of Quench water-carrying capacity
The stability of Liquid level, reduce the parking probability that thus may be brought.
Brief description of the drawings
Fig. 1 is the structural representation of existing synthesis gas wetting washing system.
Fig. 2 is the structural representation of the synthesis gas wetting washing system of the utility model embodiment.
Fig. 3 is one of the present utility model typical cell structure schematic diagram.
Embodiment
More specifically understand to have to technology contents of the present utility model, feature and effect, it is in conjunction with accompanying drawing and specifically real
Example is applied, the technical solution of the utility model is further described in detail.
As shown in Fig. 2 the synthesis gas wetting washing system of the present embodiment, mainly including scrubbing tower, Venturi scrubber, text
Water pump and Quench water pump in mound.
The scrubbing tower is divided into upper and lower two sections, and epimere is washing section, mainly including catch box, the first gas block panel, tower tray and
Demister, and offer first entrance, second entrance, the 3rd entrance, first outlet and second outlet；Hypomere is segregation section, main
To include down-comer, tedge, the second gas block panel and grid, and offer the 4th entrance, the 3rd outlet and the 4th outlet.
The catch box is arranged on the middle part of the scrubbing tower, for separating upper and lower two sections of scrubbing tower, prevents scrubbing tower
The liquid of segregation section enters washing section, while collects the drop to be spun off from synthesis gas.The catch box carries airway tube,
For guiding the gas risen from segregation section to enter washing section.First gas block panel is arranged on the airway tube of the catch box
Top, for changing the flow direction of gas.The tower tray is arranged on the top of catch box and the first gas block panel, is closed for washing
Into gas.The quantity of tower tray is generally 2~10 layers.According to downstream to synthesize gas-solid content requirement, can select one group of tower tray or
Two groups of different types of tower trays of person, what the present embodiment was selected is the combination of solid valve and bubble-cap.The demister is arranged on tower tray
Side, the top of scrubbing tower, for removing the liquid foam carried secretly in synthesis gas., can according to requirement of the downstream to droplet size and content
To set one group or two groups of different types of demisters, for example, baffle plate demister can be selected, or spiral board demister
With the combination of baffle plate demister, what the present embodiment was selected is the combination of spiral board demister and baffle plate demister, wherein rolling over
Flowing plate demister carries seal pot and mozzle.The first entrance, second entrance and the 3rd entrance open up from top to bottom successively
On washing tower side wall between the demister and the first gas block panel, three entrances are communicating together, for being passed through washing
Process fluid (process condensate, boiler feedwater and circulation buck), realizes layering washing.The first outlet is located at scrubbing tower
Top, for discharging the crude synthesis gas after washing.The second outlet is located in the end side wall of scrubbing tower washing section, and with institute
State catch box connection, the clean Heisui River relatively low for discharging solid content.
The down-comer is L-shaped, and the 4th entrance of washing tower side wall is led in one end, and the other end extends downwardly into tedge.Institute
Tedge both ends open is stated, second gas block panel is arranged on the top of the tedge.The grid is arranged on the rising
Pipe both sides, typical cell structure are as shown in Figure 3.3rd outlet is positioned at the end of the segregation section, for discharging containing solid
The higher Heisui River of amount.4th outlet connects black water treatment system positioned at the bottom of scrubbing tower, and by pipeline, for discharging
A small amount of high Heisui River of solid content.
The Venturi scrubber connects the 4th entrance of the scrubbing tower by pipeline, is washed for crude synthesis gas to be imported
Wash the down-comer of tower segregation section.
The venturi water pump connects the 3rd outlet of the scrubbing tower and the Venturi scrubber by pipeline, is used for
The higher Heisui River of the solid content of the outlet of scrubbing tower the 3rd discharge is transported into Venturi scrubber to recycle.
The Quench water pump connects the scrubbing tower second outlet and chilling train by pipeline, for by scrubbing tower second
Export the relatively low clean Heisui River of the solid content discharged and be transported to chilling train.
When the synthesis gas wetting washing system operation when, first by the segregation section of scrubbing tower hypomere realize wet synthesis gas and
The separation of solid particle, the solid in wet synthesis gas is removed substantially, then again by the washing section of scrubbing tower epimere, with clean
Process fluid washs synthesis gas, and further washing removes a small amount of solid carried secretly in wet synthesis gas, can be consolidated with significantly more efficient
Content is controlled in 1 milligram/standard cubic meter.Specific wetting and washing process are as follows：
First, crude synthesis gas enters the down-comer of scrubbing tower segregation section, and the liquid in scrubbing tower by Venturi scrubber
Face contacts, and most of solid particle in synthesis gas enters liquid phase, and a small amount of solid particle is stayed in synthesis gas.Carry a small amount of solid
Synthesis gas turn back, the annular space being upwardly between tedge and down-comer, run into the resistance of the second gas block panel at the top of tedge
Gear, is deflected into inside scrubbing tower, continues toward rising, by the airway tube of catch box, through the first gas block panel at the top of catch box
After baffling, into the washing section of scrubbing tower.
Synthesis gas into scrubbing tower washing section continues toward rising, in tower tray lower floor and the recycled process water counter current contacting, so
After rise to tower tray upper strata, and more clean technique washings (process condensate or high pressure boiler water supply) counter current contacting,
Gas passes through the liquid layer of tray surface, mass-and heat-transfer occurs during gas-liquid contact, the solid dust entrained by gas is big absolutely
Part flows into catch box with liquid, and entrained solid is further removed in synthesis gas.Synthesis gas carrying portion after washing
Liquid separation drop rises at the top of tower tray, and into demister, multiple deflecting, the liquid entrained by gas are passed through on the deflection plate of demister
Drop is stopped by the hook on demister deflection plate and deflection plate to be intercepted, and drop collects in demister baffling plate surface and forms liquid stream,
Because the effect of gravity flows into demister seal pot, catch box is flowed into after demister mozzle passes through tower tray.Removing big portion absolutely
Synthesis gas after liquid separation drop leaves from first outlet at the top of scrubbing tower.Relatively low clean (the Heisui River, Heisui River of solid content in catch box
In solid content be less than 100ppmw) from second outlet discharge, synthesis gas chilling train is pumped into by chilled water, for synthesizing
Gas Quench.The higher Heisui River of solid content is most of after separation grid removing bulky grain solid, passes through the of wash tower bottoms
Three outlet discharges, through venturi water pump, are recycled into Venturi scrubber, fraction according to the needs of systematic water balance,
(solid content in Heisui River is about 1- to the black water treatment system being discharged downstream by the 4th outlet gravity flow of wash tower bottoms
3wt%), to prevent the accumulation of solid.
The separation of wet synthesis gas and solid particle is typically touched using the mechanical forces such as gravity, inertia force, centrifugal force and inertia
The mode such as hit, intercept, spreading to realize, therefore, in other embodiments, the down-comer of scrubbing tower segregation section adds the group of riser
Closing internals can also be replaced with cyclonic separation combination internals, i.e., wet synthesis gas entrained solid is separated using the effect of centrifugal force
Particle.Cyclonic separation combination internals mainly include：Outer cylinder body (including cylinder, top end socket and circular cone) and Venturi scrubber
The connected synthesis gas admission line in outlet and the mouth of pipe, the synthesis gas exhaust pipe mouth being connected with catch box airway tube and pipeline, stretch into
The subsurface solid particle discharge pipe of scrubbing tower and the mouth of pipe.In order to which alleviate that solid particle in synthesis gas may bring washes away,
The corresponding site of cyclonic separation combination internals can contemplate installation erosion control baffle plate, butt welding or lining wear-resistant material.
Claims (10)
1. synthesis gas soak washing system, it is characterised in that including synthesis gas washing tower, Venturi scrubber, Quench water pump and
Venturi water pump；Wherein：
The synthesis gas washing tower includes upper and lower two sections, and epimere is washing section, includes catch box, gas block panel and washing separation
Component, hypomere are segregation section, include solid particle separation assembly；The catch box carries airway tube, and the gas block panel is located at
The top of the airway tube, the washing separation assembly are located at the top of the catch box and gas block panel；At the top of the scrubbing tower
The syngas outlet being provided with after washing, washing section end are provided with clean Heisui River outlet, and segregation section end and bottom have and contained
Gu Heisui River exports；The clean Heisui River outlet connects with the catch box；The washing section of the scrubbing tower is provided with technique scrub stream
Body entrance, segregation section are provided with synthesis gas entrance to be washed；
The Venturi scrubber by pipeline respectively the outlet with the venturi water pump, the outlet of gasification furnace synthesis gas and
Segregation section synthesis gas entrance connection to be washed；The entrance of the venturi water pump passes through pipeline and the scrubbing tower segregation section end
Containing solid Heisui River outlet connection；The entrance of the Quench water pump is exported by the clean Heisui River of pipeline and the washing section end to be connected
Connect, outlet is connected by pipeline with chilling train.
2. synthesis gas according to claim 1 soaks washing system, it is characterised in that the washing separation assembly includes tower
Disk and demister.
3. synthesis gas according to claim 2 soaks washing system, it is characterised in that the tower tray uses solid valve, or
Gu the combination of valve and bubble-cap.
4. synthesis gas according to claim 2 soaks washing system, it is characterised in that the demister is deflection plate foam removal
Device, or the combination of spiral board demister and baffle plate demister；Include liquid conduits in the demister.
5. synthesis gas according to claim 1 soaks washing system, it is characterised in that the solid particle separation assembly bag
Include down-comer and tedge；The synthesis gas entrance to be washed of down-comer one end connection scrubbing tower segregation section, the other end are downward
Stretch into the tedge；The tedge both ends open.
6. synthesis gas according to claim 5 soaks washing system, it is characterised in that is provided with the top of the tedge
Gas block panel, the both sides of the tedge are provided with grid.
7. synthesis gas according to claim 1 soaks washing system, it is characterised in that the solid particle separation assembly is
Built-in cyclonic separation sub-assembly.
8. synthesis gas according to claim 1 soaks washing system, it is characterised in that the technique wash fluid entrance has
More than 2, it is opened in respectively in the side wall of scrubbing tower washing section different height.
9. synthesis gas according to claim 1 soaks washing system, it is characterised in that containing for the segregation section bottom is solid black
Water out is connected by pipeline with black water treatment system.
10. synthesis gas according to claim 1 soaks washing system, it is characterised in that the Quench water pump and venturi
Water pump is variable frequency pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720590602.6U CN207031371U (en) | 2017-05-25 | 2017-05-25 | Synthesis gas soaks washing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720590602.6U CN207031371U (en) | 2017-05-25 | 2017-05-25 | Synthesis gas soaks washing system |
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| CN207031371U true CN207031371U (en) | 2018-02-23 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410515A (en) * | 2017-02-09 | 2018-08-17 | 通用电气公司 | Gasify chilling train |
| CN108441266A (en) * | 2018-05-08 | 2018-08-24 | 科林未来能源技术(北京)有限公司 | A kind of the cleaning dust device and its cleaning dust technique of synthesis gas |
| CN110305700A (en) * | 2019-07-12 | 2019-10-08 | 上海化工研究院有限公司 | A kind of high pressure synthesis gas device for deep cleaning and technique |
| CN110591766A (en) * | 2019-10-21 | 2019-12-20 | 空气化工产品神华(上海)气化技术有限公司 | Synthetic gas washing system adaptive to harsh working conditions and working method thereof |
| CN113045088A (en) * | 2021-03-12 | 2021-06-29 | 中国华能集团清洁能源技术研究院有限公司 | Evaporation and concentration system for ash water discharged by coal gasification washing tower |
-
2017
- 2017-05-25 CN CN201720590602.6U patent/CN207031371U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410515A (en) * | 2017-02-09 | 2018-08-17 | 通用电气公司 | Gasify chilling train |
| CN108441266A (en) * | 2018-05-08 | 2018-08-24 | 科林未来能源技术(北京)有限公司 | A kind of the cleaning dust device and its cleaning dust technique of synthesis gas |
| CN110305700A (en) * | 2019-07-12 | 2019-10-08 | 上海化工研究院有限公司 | A kind of high pressure synthesis gas device for deep cleaning and technique |
| CN110591766A (en) * | 2019-10-21 | 2019-12-20 | 空气化工产品神华(上海)气化技术有限公司 | Synthetic gas washing system adaptive to harsh working conditions and working method thereof |
| CN113045088A (en) * | 2021-03-12 | 2021-06-29 | 中国华能集团清洁能源技术研究院有限公司 | Evaporation and concentration system for ash water discharged by coal gasification washing tower |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201203 building 51, No. 1000, zhangheng Road, Pudong New Area, Shanghai Patentee after: Shenhua (Shanghai) gasification technology Co.,Ltd. Address before: 201203 building 51, No. 1000, zhangheng Road, Pudong New Area, Shanghai Patentee before: GE SHENHUA GASIFICATION TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 200000 Room 303, No. 88, Lane 887, Zuchongzhi Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Air chemical products (Shanghai) gasification technology Co.,Ltd. Address before: 201203 building 51, No. 1000, zhangheng Road, Pudong New Area, Shanghai Patentee before: Shenhua (Shanghai) gasification technology Co.,Ltd. |