CN108114578A - A kind of purifier for biomass pyrolysis liquefaction Poly-generation - Google Patents
A kind of purifier for biomass pyrolysis liquefaction Poly-generation Download PDFInfo
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- CN108114578A CN108114578A CN201711383303.6A CN201711383303A CN108114578A CN 108114578 A CN108114578 A CN 108114578A CN 201711383303 A CN201711383303 A CN 201711383303A CN 108114578 A CN108114578 A CN 108114578A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C5/00—Production of pyroligneous acid distillation of wood, dry distillation of organic waste
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to purifier fields, and specifically disclose a kind of purifier for biomass pyrolysis liquefaction Poly-generation, the purifier is used to carry out purified treatment to pyrolysis gas, it includes purifying column, the purifying column is divided into liquid storage section from bottom to up, air inlet section, spray section, demisting section and air outlet section, circulation section is additionally provided with outside it, pending pyrolysis gas enters from air inlet section, after spray section and demisting section spray and demisting, it is discharged from air outlet section, acetic acid steam in pyrolysis gas condenses during spray to be recycled in liquid storage section, the circulation section adjusts the spray liquid of spray section according to the pH value of liquid in liquid storage section, so that the pH value of liquid is between 2.5 3.5 in liquid storage section.The purification of the achievable pyrolysis gas of the present invention, while realize the recycling of acetic acid, have many advantages, such as that simple in structure, operation is convenient.
Description
Technical field
The invention belongs to purifier field, more particularly, to a kind of for the net of biomass pyrolysis liquefaction Poly-generation
Makeup is put.
Background technology
Pyrolysis be biomass efficient conversion a kind of mode, using pyrolytic technique can promptly convert biomass into charcoal,
Gas, oily three kinds of products for having utility value.At present, the technology in relation to biomass pyrolytic more pays close attention to wherein single product
Optimal utilization, and other products are lacked with enough attention, economy is often difficult to ensure that.Development is based on biomass pyrolytic
Charcoal, gas, oily Poly-generation technology produce a variety of high value added products, can effectively realize the economic maximization of entire conversion process, be
The important directions that biomass resource utilizes comprehensively.
The condensed pyrolysis gas of pyrolysis bio-oils also uncooled bio oil also containing substantial amounts of acetic acid steam and partly,
Previous biomass pyrolysis system is to remove this some vapor by exclusion device, but acetic acid steam and uncooled biology
Oil is the important source material for making wood vinegar, directly causes greatly to waste by exclusion device removal.
The content of the invention
It is more for biomass pyrolysis liquefaction the present invention provides one kind for the disadvantages described above or Improvement requirement of the prior art
The purifier of coproduction is specifically a kind of device that spray cleaning is carried out to biomass pyrolysis liquefaction Poly-generation pyrolysis gas, leads to
Crossing will condense, then through spray condensation the acetic acid steam in pyrolysis gas in pyrolysis gas feeder dissolves in spray liquid and gives
Recycling, realizes that the purification of pyrolysis gas is allowed to become thick combustion gas with this, while realizes the recycling of acetic acid to be prepared as follow-up
The stoste of wood vinegar has many advantages, such as that simple in structure, operation is convenient, available in biomass pyrolytic polygenerations systeme.
To achieve the above object, the present invention proposes a kind of purifier for biomass pyrolysis liquefaction Poly-generation, should
Purifier be used for pyrolysis gas carry out purified treatment, including purifying column, the purifying column be divided into from bottom to up liquid storage section,
Air inlet section, spray section, demisting section and air outlet section, outside be additionally provided with circulation section, pending pyrolysis gas enters from air inlet section,
After spray section and demisting section spray and demisting, discharged from air outlet section, the acetic acid steam in pyrolysis gas condenses during spray
It is recycled in liquid storage section, the circulation section adjusts the spray liquid of spray section according to the pH value of liquid in liquid storage section so that liquid storage section
The pH value of middle liquid is between 2.5-3.5.
As it is further preferred that the spray section is to include the two-stage spray list of level-one spray section and two level spray section
The structure of member, level-one spray section and two level spray section identical includes packing layer and the spray assemblies being arranged on above packing layer,
The spray assemblies are connected with circulation section.
As it is further preferred that the circulation section includes circulating pump, pH probes, small pump and liquid reserve tank, the cycling
It pumps for the liquid in liquid storage section to be sent into spray section or liquid reserve tank, the pH probes are used to detect the pH of liquid in liquid storage section
Value, and according to the opening and closing of pH value control small pump.
As it is further preferred that when the pH value that pH probes detect liquid in liquid storage section is less than 2.5, small pump is opened
Tap water is sent into spray section by circulating water pipe, while the liquid in liquid storage section is sent into liquid reserve tank by circulating pump；When pH is visited
When the pH value that stick detects liquid in liquid storage section is higher than 3.5, small pump is closed, and the liquid in liquid storage section is passed through Xun Huan by circulating pump
Water pipe is sent into spray section；When pH probes detect the pH value of liquid in liquid storage section between 2.5~3.5, circulating pump will store up
Liquid in liquid section is sent into liquid reserve tank.
As it is further preferred that the demisting section includes spiral board and baffle plate, the pyrolysis gas after spray first leads to
It crosses spiral board and carries out demisting, then enter back into baffle plate and carry out demisting, the pyrolysis gas after demisting becomes thick combustion gas and enters
Gas section.
As it is further preferred that the spiral board elevation angle is 30 °, the baffle plate dog-ear is 120 °.
As it is further preferred that the air inlet section includes the air inlet being opened in purifying column tower wall and positioned at air inlet
Air distributor between section and spray section.
As it is further preferred that the air distributor is sieve type distributor, by several circular diversion rod phases
Mutual square crossing is made, and the density of diversion rod is gradually reduced from tower wall to center, from close to air inlet one side to separate air inlet
Mouth one side is by sparse gradually intensive.
In general, by the above technical scheme conceived by the present invention compared with prior art, mainly possess following
Technological merit：
1. the present invention passes through circulated sprinkling liquid by spraying recycling of the condensation pyrolysis gas realization to acetic acid in pyrolysis gas
PH controls, realize the preparation of primary wood vinegar, there is simple in structure, operation facility.
2. shower portion of the present invention is sprayed using two level, purification part is formed by stacking by three layers, i.e. the level-one spray of lower floor
Section, the two level spray section in middle level and the demisting end on upper strata, enhance the spray condensation effect to acetic acid steam in pyrolysis gas, improve
The efficiency of purifying column and the upgrading effect to pyrolysis gas.
3. the demisting section of the present invention takes the mode that spiral board demisting and baffle plate demisting are combined, considerably improve
To the removal efficiency of drop in pyrolysis gas, hence it is evident that improve the upgrading effect to pyrolysis gas, reduce the water loss of purifier.
4. present invention employs circulated sprinkling system, the content of the acid of liquid in liquid storage tank is effectively increased, and
It is opened and shut off using pH controls pump and battery valve, effectively controls the pH value of liquid in liquid storage tank, realize to wood vinegar
Recycling.
5. the present apparatus employs sieve type air distributor, the pyrolysis gas into spray column is made more to be uniformly distributed, increased
Strong contact area and the time of contact of pyrolysis gas and spray liquid, spray efficiency is improved, spray column is enhanced and pyrolysis gas is carried
Matter effect.
Description of the drawings
Fig. 1 is that a kind of structure of purifier for biomass pyrolysis liquefaction Poly-generation provided in an embodiment of the present invention is shown
It is intended to；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is B-B sectional views in Fig. 1.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Conflict is not formed each other to can be combined with each other.
As shown in Figure 1, a kind of purifier for biomass pyrolysis liquefaction Poly-generation provided in an embodiment of the present invention, it should
Purifier is used to carry out purified treatment to pyrolysis gas, and including purifying column 1, which is divided into liquid storage from bottom to up
Section, air inlet section, spray section, demisting section and air outlet section, outside be additionally provided with circulation section, pending pyrolysis gas from air inlet section into
Enter, after spray section and demisting section spray and demisting, discharged from air outlet section, the acetic acid steam in pyrolysis gas is cold during spray
Solidifying to be recycled in liquid storage section, the circulation section adjusts the spray liquid of spray section according to the pH value of liquid in liquid storage section so that liquid storage
The pH value of liquid is between 2.5-3.5 in section.
Each active section is described in more detail below.
As shown in Figure 1, liquid storage section is located at purifying column bottom of towe, including liquid storage tank 20, overflow pipe 21 and blow-off pipe 19；Air outlet section
Including the gas outlet 7 being opened in tower wall, flange is used between liquid storage section, air inlet section, spray section, demisting section and each section of air outlet section
Connection；Purifying column is upright cylindrical shape purifying column, and tower height is 7 with tower body diameter ratio:1.
As shown in Figure 1, air inlet section includes the air inlet 2 being opened in purifying column tower wall and positioned at air inlet section and spray section
Between air distributor 3.Specifically, as shown in Fig. 2, air distributor be sieve type distributor, led by several circles
Flow post is mutually perpendicular to intersect and be made, and the density of diversion rod is gradually reduced from tower wall to center, from close to air inlet one side to remote
From air inlet one side by sparse gradually intensive.It has been investigated that pyrolysis gas from pyrolysis gas air inlet enter inside tower body when, air-flow
It is distributed as reducing along tower wall to center flow velocity, while reduces from close to inlet side to away from inlet side flow velocity, therefore utilize this hair
The air distributor of the said structure of bright research and design may be such that some resistance that flow velocity is big in air-flow is big, the small part of flow velocity
Resistance is small, and then optimizes rectification effect, makes air flow method more uniform.
As shown in Figure 1, spray section is to include the two-stage spray unit of level-one spray section and two level spray section, level-one spray section
It is identical with the structure of two level spray section, including packing layer 4 and the spray assemblies being arranged on above packing layer 5, the spray assemblies 5
It is connected with circulation section, is specifically connected with the circulating water pipe of circulation section 11, is also set in the tower wall between packing layer and spray assemblies
There is peep hole 10.Specifically, level-one spray section lower part is located at 3 top of air distributor, two level spray pars infrasegmentalis is sprayed with level-one
Section top connects, and the pyrolysis gas entered from air inlet is successively by level-one, two level spray section, subsequently into demisting section.Preferably,
Spray assemblies include the spray tube being connected with the circulating water pipe of circulation section and the rotarytype injector being arranged on spray tube, the spray
Mouth is evenly distributed on spray tube, and the atomization angle of nozzle is 90 °.
As shown in Figure 1, demisting section 6 is combined by spiral board demisting with baffle plate demisting, demisting pars infrasegmentalis is sprayed with two level
Section top connects, and the pyrolysis gas after two level sprays first passes through spiral board 9 and carries out demisting, then enters back into baffle plate 8 and carries out
Demisting, i.e. spiral board 9 are under, baffle plate 8 is upper, and the pyrolysis gas after demisting enters air outlet section as thick combustion gas, by going out
Gas port 7 discharges purifier.Wherein, 9 blade of spiral board and horizontal direction angle (i.e. the blade elevation angle) are 30 °, and baffle plate 8 is adjacent
Dog-ear between two blades is 120 °.
As shown in Figure 1, circulation section includes circulating pump 18, pH probes 13, small pump 15 and liquid reserve tank, wherein circulating pump is used for
Liquid in liquid storage section to be sent into spray section or liquid reserve tank, pH probes are used to detect the pH value of liquid in liquid storage section, and according to
PH value controls the opening and closing of small pump.Specifically, circulating pump is connected with liquid storage section, and pass through circulating water pipe 11 and spray group
Part is connected, and solenoid valve 1 is provided on the circulating water pipe, which is connected by loop branch pipe with small pump 15, this is followed
Solenoid valve 2 14 is provided on ring branch pipe, circulating pump is also connected by water pipe with liquid reserve tank, and water pipe is equipped with solenoid valve 3 17, electricity
Magnet valve 1, solenoid valve 2 14 and solenoid valve 3 17 are controlled by fluid level controller 12, specific 12 basis of fluid level controller
PH value controls the opening and closing of small pump and associated solenoid valve.
The circulation section concrete operating principle is as follows：When the pH value that pH probes detect liquid in liquid storage section is less than 2.5, mend
Water pump and solenoid valve two are opened is sent into spray section by tap water by circulating water pipe, while solenoid valve one is closed, and solenoid valve three is opened
It opens, the liquid in liquid storage section is sent into liquid reserve tank by circulating pump；When the pH value that pH probes detect liquid in liquid storage section is higher than 3.5
When, small pump and solenoid valve two are closed, while solenoid valve one is opened, and solenoid valve three is closed, and circulating pump is by the liquid in liquid storage section
Spray section is sent by circulating water pipe；When the pH value that pH probes detect liquid in liquid storage section is located at 2.5~3.5 (including both ends
Point value) between when, circulating pump by liquid storage section liquid be sent into liquid reserve tank in, this partially liq can be used as preparing wood vinegar
Stoste realizes the recycling to wood vinegar by way of pH value control.
In actual application, device flow is divided into two parts：That is pyrolysis gas flow and liquid flow.The stream of pyrolysis gas
Cheng Wei：Pyrolysis gas is entered by air inlet in purifying column first, using air distributor pyrolysis gas is made to be evenly distributed；Then into
Enter level-one spray section, the liquid mist in the case where packing layer is sprayed with spray assemblies comes into full contact with, and it (is specially in pyrolysis gas to make pyrolysis gas steam
Acetic acid steam) condensation dissolving collected to liquid storage section, pyrolysis gas goes successively to two level spray section, in this stage with level-one spray section
It is similar；Subsequently into demisting section, demisting is successively carried out by spiral board and baffle plate, the drop in pyrolysis gas is removed, passes through spray
Pyrolysis gas after leaching and demisting becomes thick combustion gas；Last thick combustion gas enters air outlet section, and purifying column is discharged by gas outlet；Liquid flow
Cheng Wei：When the liquid pH in the liquid storage tank of liquid storage section is more than 3.5, solenoid valve one is opened, while solenoid valve two, three and small pump
Close, circulating pump from liquid storage tank suck circulation fluid, spray section is entered by circulating water pipe and is sprayed, spray liquid packing layer with
It after pyrolysis gas comes into full contact with, is then back into liquid storage tank, this causes liquid storage tank liquid pH reductions；When pH drops below 2.5
When, solenoid valve one is closed, and solenoid valve three is opened, and the liquid in liquid storage tank enters liquid reserve tank by circulating pump, meanwhile, small pump and
Solenoid valve two is opened, and tap water is pumped by moisturizing in spray section, such tap water and pyrolysis gases contact, condensation dissolving pyrolysis
Steam in gas, finally flows into liquid storage tank so that liquid pH is raised in liquid storage tank, is so cycled；When pH value is located at 2.5~3.5
Between when, circulating pump by liquid storage section liquid be sent into liquid reserve tank in, this partially liq can be used as preparing the stoste of wood vinegar,
Realize the recycling to wood vinegar.
Apparatus of the present invention effectively absorb acetic acid steam in pyrolysis gas, using circulated sprinkling and pH value control method effectively
Promote the formation of wood vinegar stoste, and the demisting means being combined using spinning disk and baffle plate improve demisting efficiency, reduce
The water loss of purifier.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of purifier for biomass pyrolysis liquefaction Poly-generation, which is characterized in that the purifier is used for pyrolysis
Gas carries out purified treatment, and including purifying column, which is divided into liquid storage section, air inlet section, spray section, demisting from bottom to up
Section and air outlet section, outside be additionally provided with circulation section, pending pyrolysis gas enters from air inlet section, is sprayed through spray section and demisting section
It after leaching and demisting, is discharged from air outlet section, the condensation during spray of the acetic acid steam in pyrolysis gas is recycled in liquid storage section, described
Circulation section adjusts the spray liquid of spray section according to the pH value of liquid in liquid storage section so that the pH value of liquid is between 2.5- in liquid storage section
Between 3.5.
2. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as described in claim 1, which is characterized in that the spray
Section is the two-stage spray unit for including level-one spray section and two level spray section, and level-one spray section is identical with the structure of two level spray section
Include packing layer and the spray assemblies being arranged on above packing layer, the spray assemblies are connected with circulation section.
3. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as claimed in claim 1 or 2, which is characterized in that described
Circulation section includes circulating pump, pH probes, small pump and liquid reserve tank, and the circulating pump is used to the liquid in liquid storage section being sent into spray
In section or liquid reserve tank, the pH probes are used to detect the pH value of liquid in liquid storage section, and the unlatching of small pump is controlled according to pH value
And closing.
4. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as claimed in claim 3, which is characterized in that when pH probes
When detecting the pH value of liquid in liquid storage section less than 2.5, small pump is opened is sent into spray section by tap water by circulating water pipe, together
When circulating pump liquid in liquid storage section is sent into liquid reserve tank；When the pH value that pH probes detect liquid in liquid storage section is higher than 3.5
When, small pump is closed, and the liquid in liquid storage section is sent into spray section by circulating pump by circulating water pipe；When pH probes detect liquid storage
When the pH value of liquid is between 2.5~3.5 in section, the liquid in liquid storage section is sent into liquid reserve tank by circulating pump.
5. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as described in claim 1, which is characterized in that the demisting
Section includes spiral board and baffle plate, and the pyrolysis gas after spray first passes through spiral board and carries out demisting, then enters back into baffle plate
Demisting is carried out, the pyrolysis gas after demisting enters air outlet section as thick combustion gas.
6. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as claimed in claim 5, which is characterized in that the eddy flow
The plate elevation angle is 30 °, and the baffle plate dog-ear is 120 °.
7. the purifier for biomass pyrolysis liquefaction Poly-generation as described in claim 1-6, which is characterized in that it is described into
Gas section includes being opened in the air inlet in purifying column tower wall and the air distributor between air inlet section and spray section.
8. the purifier of biomass pyrolysis liquefaction Poly-generation to be used for as claimed in claim 7, which is characterized in that the air-flow
Distributor is sieve type distributor, and being mutually perpendicular to intersection by several circular diversion rods is made, and the density of diversion rod is by tower
Wall is gradually reduced to center, from close air inlet one side to separate air inlet one side by sparse gradually intensive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711383303.6A CN108114578A (en) | 2017-12-20 | 2017-12-20 | A kind of purifier for biomass pyrolysis liquefaction Poly-generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711383303.6A CN108114578A (en) | 2017-12-20 | 2017-12-20 | A kind of purifier for biomass pyrolysis liquefaction Poly-generation |
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| CN206372605U (en) * | 2016-12-29 | 2017-08-04 | 临沂圣大环保工程有限公司 | A kind of tower top demister handled for phosphoric acid tail gas |
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Application publication date: 20180605 |