CN108003943B - A kind of Straw Gas purification system - Google Patents
A kind of Straw Gas purification system Download PDFInfo
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- CN108003943B CN108003943B CN201710422928.2A CN201710422928A CN108003943B CN 108003943 B CN108003943 B CN 108003943B CN 201710422928 A CN201710422928 A CN 201710422928A CN 108003943 B CN108003943 B CN 108003943B
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- separation tank
- straw gas
- purification system
- settlement separation
- straw
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Industrial Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention discloses a kind of Straw Gas purification system, belongs to the cleaning process technology field of pyrolysis gas.Straw Gas purification system provided by the invention includes injector, for high temperature Straw Gas to be sufficiently mixed with cleaning solution, and is pressurized and then exports；Settlement separation tank, the Straw Gas washing liquid mixture for will export from flow type pump with injection device carry out gas-liquid separation and then export；Spray scrubber, the gas separated for settlement separation tank described in purification and washing；The settlement separation tank is located at the lower section of the injector and the spray scrubber, and the arrival end of the settlement separation tank and outlet end are respectively communicated with the outlet at bottom end of the injector and the bottom inlet end of the spray scrubber.The process flow of stalk purification system of the invention is simple, the straw gas purification being particularly suitable under slight positive pressure state caused by rotary carbide furnace.
Description
Technical field
The present invention relates to the purification process fields of pyrolysis gas, and in particular to a kind of Straw Gas purification system.
Background technique
Currently, utilizing the effective way of biomass resource as scale, biomass carbonization technology is increasingly by society
The attention of meeting.Existing biomass carbonization technology generally comprise pyrolysis oven, cooler, gas-liquid separator, tar absorber and
Gas-holder.But its biomass gas produced, as a large amount of impurity would generally be contained in Straw Gas, such as dust, wood tar, wood
Vinegar liquid and moisture content etc., this heat generated when not only can reduce burning, but also will cause the accidents such as burner blocking, influence device
Stable operation.
For this purpose, Chinese patent literature CN2698791Y discloses a kind of biomass carbonization charing gasification installation, including destructive distillation
Furnace, tar heavy oil separator, cooler, gas-liquid separator, tar absorber and gas holder；Air inlet between gas retort and cooler
Equipped with the water seal arrangement for preventing return-air on pipe, the water seal arrangement is by being equipped with the closed tank body of water, the air inlet pipe of closed tank body upper end
It is formed with escape pipe and the draining faucet of closed tank body lower end；Partition is equipped in tar absorber, on tar absorber
There are air inlet, feed inlet and gas outlet.Although the utility model pass through equipped with prevent the water seal arrangement of return-air can prevent air into
Enter to cause in gas retort return-air accident, while adding partition to reduce the tar content in combustion gas.But it still has following lack
It falls into, firstly, the utility model only considers the filtering of tar and moisture, the filtering without considering gaseous impurity, therefore it is produced
The degree of purity of raw Straw Gas is lower；Secondly, the utility model, which does not account for the Straw Gas obtained after pyrolysis, to be had centainly
Acidity, and this acidity can not only corrode equipment, also will affect the efficiency of combustion of Straw Gas, must neutralize, therefore it is generated
Straw Gas quality it is lower；Again, which does not recycle the tar and moisture that detach from Straw Gas and sets
Standby, resource utilization is lower.
For this purpose, Chinese patent literature CN102206497A discloses a kind of anaerobic pyrolysis purification process, the prior art is first right
Stalk material carries out airtight heating to generate Straw Gas, then by Straw Gas sequentially input tar separator, level-one cooling separator,
Second level cooling separator removes most tar to cool down, and then passes sequentially through No.1 gas-liquid separator, neutralizes separator, two
Number gas-liquid separator enters back into the disengaging again that knockout tower carries out moisture, tar, vinegar liquid, then to remove most moisture
Roots blower group, No.1 pneumatic filter, No. two pneumatic filters are passed sequentially through to filter gaseous impurity, finally enter air storage
Cabinet, and the moisture, tar and vinegar liquid of removing are all inputted into oil-water separation tank.Straw Gas quality caused by the prior art method
Preferably, resource utilization is higher, lower production costs, and production efficiency is higher, safety is stronger.However due to the existing skill
Art purification process is multistage cooling and separation, and through excessive water, separating tar, wood vinegar and filtering etc., process flow is excessively numerous
It is trivial, and the gas for causing it not to be suitable under slight positive pressure state caused by rotary carbide furnace since the more resistances of its equipment are big is net
Change.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming the process flow of stalk purification process in the prior art
It is excessively cumbersome, and cause it not to be suitable under slight positive pressure state caused by rotary carbide furnace since the more resistances of its equipment are big
The defect of gas purification, to provide a kind of Straw Gas purification system.
For this purpose, the invention provides the following technical scheme:
A kind of Straw Gas purification system, comprising:
Injector for high temperature Straw Gas and cleaning solution to be sufficiently mixed, dedusting, cooling, and is pressurized and then exports；
Settlement separation tank, the Straw Gas washing liquid mixture for will export from flow type pump with injection device carry out air-liquid and gas, solid point
From then output；
Spray scrubber, the gas separated for settlement separation tank described in purification and washing；
The settlement separation tank is located at the lower section of the injector and the spray scrubber, the settlement separation tank
Arrival end and outlet end are respectively communicated with the outlet at bottom end of the injector and the bottom inlet end of the spray scrubber.
The settlement separation tank is closed cone cylindrical design, and passes through inclined plate set by centre for the settlement separation tank
It is divided into upper and lower two parts, lower part is divided into inclined isolation ward.
It is fixed at the top of the inclined plate on the side wall of the settlement separation tank, the bottom of the inclined plate and the sedimentation point
It is not contacted from pot bottom, top vent hole is additionally provided at the top of the inclined plate.
The top U-tube liquid sealing pipe of the side wall of the side for being equipped with the fixed inclined plate of the settlement separation tank, and and side
The outlet of set dross is connected on wall；
The middle part of the side wall of one side of the inclined isolation ward is equipped with circulating water outlet, the top of the settlement separation tank
The middle lower section of the side wall divided is equipped with discharge port.
The middle and upper part of the spray scrubber is equipped with nozzle, and the nozzle is four layers, and two layers of nozzle of top sprays downwards,
Two layers of nozzle upward spraying of lower section.
The inside of the spray scrubber is equipped with the ring diversion plate that outer is fixed on the spray inner wall of tower, the annular
Deflector tilts down.
The degree that the ring diversion plate tilts down is 15 degree, and the inner upper of the spray scrubber is equipped with foam removal
Layer.
It in order further include overhead condenser, tower top liquid seal can and Straw Gas air-introduced machine；
The overhead condenser is located at the top of the spray scrubber, and the tower top liquid seal can is respectively communicated with the tower top
The outlet of condenser and the entrance of the Straw Gas air-introduced machine.
It in order further include recirculation cooler, ejection circulation pump, cleaning circulation pump；
The recirculation cooler is connected to the circulating water outlet of the settlement separation tank；The outlet of the cleaning circulation pump
Four layers of nozzle of the spray scrubber and the entrance of the injector.
It further include rotary drum vacuum filter and knockout drum, the entrance of the rotary drum vacuum filter is connected to the precipitating
The discharge port of knockout drum, knockout drum described in the outlet of the rotary drum vacuum filter.
Technical solution of the present invention has the advantages that
1, Straw Gas purification system provided by the invention is particularly suitable for that pressure is relatively low, and temperature is higher than 450 DEG C or more, gas
Relatively small Straw Gas is measured, and uses the scheme of injector dedusting, cooling and scrubbing tower washing that can both solve insufficient pressure
Problem can have both dedusting, cooling and the multiple effect for separating wood tar and wood vinegar in Straw Gas again.
2, Straw Gas purification system provided by the invention uses the combination of injector and spray scrubber and settlement separation tank
Scheme can realize that Straw Gas dedusting, cooling and separating effect, and occupied area is small, it is easy to operate；In addition injector dedusting
The purification process that Straw Gas is enormously simplified with the combination of scrubbing tower, makes package unit brevity and lucidity, has short flow, operation
Simply, the advantages of small investment.
3, Straw Gas purification system provided by the invention uses closed cone bottom settlement separation tank, avoids the outer of smell
It overflows, is conducive to the improvement of operating environment；Settlement separation tank uses upper and lower two parts, produces suspended matter and sediment respectively, can be with
Guarantee device long-term operation；Settling tank uses the isolation ward of intermediate, inclined, and most suspended substances can be made to concentrate extraction, cleaning solution
Middle part extraction is conducive to improve washing effect for recycling washing.
4, Straw Gas purification system provided by the invention uses the settlement separation tank of combination and cellular-type for the simplification of process
And closed operation provides feasibility, while also providing convenience for the extraction of suspended matter and bottom of pond sediment；So as to improve
Execute-in-place environment, ensure that the physical and mental health of site operation personnel.
5, the scrubbing tower spray nozzle of Straw Gas purification system provided by the invention concentrate on middle and upper part arrangement, and have upwards,
Lower spray, design can reduce scrubbing tower resistance drop in this way, while also make the spraying intensity of the cross section of spray column from top to bottom
It is almost the same, be conducive to the raising of spray, washing effect；
6, the spray washing top of tower of Straw Gas purification system provided by the invention sets foam-removing layer and condensate cooler,
It purifies Straw Gas further, while reducing installation area, simplify process.
7, Straw Gas purification system provided by the invention have process flow be simple and convenient to operate, production procedure it is totally-enclosed,
Operating environment is clean and tidy, odorlessness, small investment, and production cost is low and low to manufacturing specification request, easy to promote and utilize.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the process flow chart of the embodiment of the present invention 2；
Fig. 2 is the front view of currently preferred precipitation and separation tank；
Fig. 3 is the left view of currently preferred precipitation and separation tank；
Fig. 4 is the top view of currently preferred precipitation and separation tank；
Fig. 5 is the elevation of currently preferred spray scrubber；
Fig. 6 is the top view of currently preferred spray scrubber；
Appended drawing reference:
1- injector；2- settlement separation tank；3- spray scrubber；4- inclined plate；The inclined isolation ward of 5-；6- top vent
Hole；7-U shape pipe liquid seal trough；The outlet of 8- dross；9- discharge port；10- nozzle 10；11- ring diversion plate；12- foam-removing layer；13- tower
Push up condenser；14- tower top liquid seal can；15- Straw Gas air-introduced machine；16- recirculation cooler；17- ejection circulation pump；18- washing follows
Ring pump；19- rotary drum vacuum filter；20- knockout drum；21- circulating water outlet.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
The present embodiment provides a kind of Straw Gas purification systems, as shown in figures 1 to 6, the Straw Gas purification system, comprising:
Injector 1 for high temperature Straw Gas to be sufficiently mixed with cleaning solution, and is pressurized and then exports；
Settlement separation tank 2, it is then defeated that the Straw Gas washing liquid mixture for will export from injector 1 carries out gas-liquid separation
Out；
Spray scrubber 3, for the gas that settlement separation tank 2 is separated described in purification and washing；
The settlement separation tank 2 is located at the lower section of the injector 1 and the spray scrubber 3, the sedimentation separation
The arrival end of tank 2 and outlet end are respectively communicated with the outlet at bottom end of the injector 1 and the bottom of the spray scrubber 3 and enter
Mouth end.
The settlement separation tank 2 is closed cone cylindrical design, and passes through inclined plate 4 set by centre for the sedimentation separation
Tank 2 is divide into upper part and lower part, and lower part is divided into inclined isolation ward 5.
The top of the inclined plate 4 is fixed on the side wall of the settlement separation tank 2, and the bottom of the inclined plate 4 sinks with described
Drop knockout drum 2 does not contact, and the top of the inclined plate 4 is additionally provided with top vent hole 6.
The top U-tube liquid seal trough 7 of the side wall of the side without the fixation inclined plate 4 of the settlement separation tank 2, and with
Set dross outlet 8 is connected on side wall；
The middle part of the side wall of one side of the inclined isolation ward 5 is equipped with circulating water outlet 21, the settlement separation tank 2
The middle lower section of the side wall of upper part is equipped with discharge port 9.
The middle and upper part of the spray scrubber 3 is equipped with nozzle 10, and the nozzle 10 is four layers, two layers of nozzle 10 of top to
Lower spray, two layers of nozzle, 10 upward spraying of lower section.
The inside of the spray scrubber 3 is equipped with the ring diversion plate 11 that outer is fixed on the spray inner wall of tower, described
Ring diversion plate 11 tilts down.
The degree that the ring diversion plate 11 tilts down is 15 degree, and the inner upper of the spray scrubber 3, which is equipped with, to be removed
Foam layer 12.
It in order further include overhead condenser 13, tower top liquid seal can 14 and Straw Gas air-introduced machine 15；
The overhead condenser 13 is located at the top of the spray scrubber 3, and the tower top liquid seal can 14 is respectively communicated with institute
State outlet and the entrance of the Straw Gas air-introduced machine 15 of overhead condenser 13.
It in order further include recirculation cooler 16, ejection circulation pump 17, cleaning circulation pump 18；
The recirculation cooler is connected to the circulating water outlet of the settlement separation tank；The outlet of the cleaning circulation pump
Four layers of nozzle of the spray scrubber and the entrance of the injector.
It further include rotary drum vacuum filter 19 and knockout drum 20, the entrance of the rotary drum vacuum filter 19 is connected to institute
State the discharge port of precipitation and separation tank 2, knockout drum 20 described in the outlet of the rotary drum vacuum filter 19.
Embodiment 2
High temperature Straw Gas from stalk gasification stove, is sufficiently mixed with cleaning solution under the driving of injector and reduces temperature
Entering settlement separation tank afterwards, gas enters spray scrubber, bottom after this gas-liquid separation, and is discharged through overhead condenser, into
Enter tower top liquid seal can, is sent to stalk coke oven as fuel gas through Straw Gas air-introduced machine；
Liquid after gas-liquid separation stops about 15 minutes or so in settlement separation tank, so that wood tar and the powder of entrainment
The sedimentations such as dirt layering, wood vinegar and water complete miscibility, floating material are discharged by liquid layer top, and sediment is discharged by pot bottom to be turned
The mixture of the drum overanxious machine of vacuum, filtered filter residue, that is, wood tar and dust sends out battery limit (BL) as by-product, and filtrate returns heavy
It drops knockout drum or sends to the raw material as charcoal base composite fertilizer when reaching saturation；
The cleaning solution of clear layer discharge enters recirculation cooler in the middle part of settlement separation tank, pressurizes after cooling through circulation
Injector and spray scrubber is gone to recycle respectively after pump (P-201, P-202) pressurization.Straw Gas its dust-laden after purified
Amount is less than 10mg/Nm3；Dew-point temperature is smaller than 20 DEG C.
1.3 capital equipment process conditions
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (8)
1. a kind of Straw Gas purification system characterized by comprising
Injector, for high temperature Straw Gas to be sufficiently mixed with cleaning solution, cooling, dedusting are simultaneously pressurized then output；
Settlement separation tank, the Straw Gas washing liquid mixture for will be discharged from injector carry out air-liquid separation and then export；
Spray scrubber, the gas separated for settlement separation tank described in purification and washing；
The settlement separation tank is located at the lower section of the injector and the spray scrubber, the entrance of the settlement separation tank
End and outlet end are respectively communicated with the outlet at bottom end of the injector and the bottom inlet end of the spray scrubber；
The settlement separation tank is closed cone cylindrical design, and is divided into the settlement separation tank by inclined plate set by centre
Upper and lower two parts, lower part are divided into inclined isolation ward；It is fixed at the top of the inclined plate on the side wall of the settlement separation tank,
The bottom of the inclined plate is not contacted with the sedimentation separation pot bottom, and top vent hole is additionally provided at the top of the inclined plate.
2. Straw Gas purification system according to claim 1, which is characterized in that the settlement separation tank is equipped with fixed institute
The top U-tube liquid sealing pipe of the side wall of a side of inclined plate is stated, and is connected with dross outlet set on side wall；
The middle part of the side wall of one side of the inclined isolation ward is equipped with circulating water outlet, the upper part of the settlement separation tank
The middle lower section of side wall is equipped with discharge port.
3. Straw Gas purification system according to claim 1, which is characterized in that the middle and upper part of the spray scrubber is equipped with
Two layers of nozzle of four layers of nozzle, top sprays downwards, two layers of nozzle upward spraying of lower section.
4. Straw Gas purification system according to claim 3, which is characterized in that the inside of the spray scrubber is equipped with outer
Along the ring diversion plate for being fixed on the spray inner wall of tower, the ring diversion plate is tilted down.
5. Straw Gas purification system according to claim 4, which is characterized in that the degree that the ring diversion plate tilts down
Number is 15 degree, and the inner upper of the spray scrubber is equipped with foam-removing layer.
6. -5 any Straw Gas purification system according to claim 1, which is characterized in that in order further include overhead condensation
Device, tower top liquid seal can and Straw Gas air-introduced machine；
The overhead condenser is located at the top of the spray scrubber, and the tower top liquid seal can is respectively communicated with the overhead condensation
The outlet of device and the entrance of the Straw Gas air-introduced machine.
7. Straw Gas purification system according to claim 6, which is characterized in that in order further include recirculation cooler, draw
Penetrate circulating pump, cleaning circulation pump；
The recirculation cooler is connected to the circulating water outlet of the settlement separation tank；Described in the outlet of the cleaning circulation pump
Four layers of nozzle of spray scrubber and the entrance of the injector.
8. Straw Gas purification system according to claim 7, which is characterized in that further include rotary drum vacuum filter and gas-liquid
Knockout drum, the entrance of the rotary drum vacuum filter are connected to the discharge port of the settlement separation tank, the rotary drum vacuum filter
Outlet described in knockout drum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422928.2A CN108003943B (en) | 2017-06-07 | 2017-06-07 | A kind of Straw Gas purification system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710422928.2A CN108003943B (en) | 2017-06-07 | 2017-06-07 | A kind of Straw Gas purification system |
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| Publication Number | Publication Date |
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| CN108003943A CN108003943A (en) | 2018-05-08 |
| CN108003943B true CN108003943B (en) | 2019-11-08 |
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ID=62048773
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200960434Y (en) * | 2006-09-29 | 2007-10-17 | 金川集团有限公司 | Dust-cleaning temperature-lowering washing tower |
| CN101063050A (en) * | 2007-05-14 | 2007-10-31 | 佛山市科达能源机械有限公司 | Coal gas production method |
| CN102849745A (en) * | 2012-09-24 | 2013-01-02 | 华陆工程科技有限责任公司 | Dust removal process and system for trichlorosilane production |
-
2017
- 2017-06-07 CN CN201710422928.2A patent/CN108003943B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200960434Y (en) * | 2006-09-29 | 2007-10-17 | 金川集团有限公司 | Dust-cleaning temperature-lowering washing tower |
| CN101063050A (en) * | 2007-05-14 | 2007-10-31 | 佛山市科达能源机械有限公司 | Coal gas production method |
| CN102849745A (en) * | 2012-09-24 | 2013-01-02 | 华陆工程科技有限责任公司 | Dust removal process and system for trichlorosilane production |
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| CN108003943A (en) | 2018-05-08 |
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