CN104404804B - A kind of chemical pulp or dissolving pulp preparation method and test-type displacement cooking device thereof - Google Patents
A kind of chemical pulp or dissolving pulp preparation method and test-type displacement cooking device thereof Download PDFInfo
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- CN104404804B CN104404804B CN201410564058.9A CN201410564058A CN104404804B CN 104404804 B CN104404804 B CN 104404804B CN 201410564058 A CN201410564058 A CN 201410564058A CN 104404804 B CN104404804 B CN 104404804B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 63
- 238000010411 cooking Methods 0.000 title claims abstract description 58
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 11
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229920000875 Dissolving pulp Polymers 0.000 title abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 142
- 238000009835 boiling Methods 0.000 claims abstract description 109
- 238000005406 washing Methods 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 8
- 230000007306 turnover Effects 0.000 claims abstract description 4
- 238000010792 warming Methods 0.000 claims description 23
- 238000010025 steaming Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 102100030386 Granzyme A Human genes 0.000 claims description 5
- 101001009599 Homo sapiens Granzyme A Proteins 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004537 pulping Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 238000013022 venting Methods 0.000 description 3
- 108010068370 Glutens Proteins 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 235000021312 gluten Nutrition 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001343274 Dichrostachys spicata Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000166124 Eucalyptus globulus Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005649 metathesis reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C7/00—Digesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C7/00—Digesters
- D21C7/12—Devices for regulating or controlling
Landscapes
- Paper (AREA)
Abstract
The invention discloses a kind of chemical pulp or dissolving pulp preparation method and test-type displacement cooking device thereof, including boiling vessel, hot white liquor groove, hot black liquor groove, temperature black liquor slot, wash liquid bath, circulating pump, spray pump, heating rod, steam generator, effusion meter, DCS operating system.Described hot white liquor groove, hot black liquor groove, temperature black liquor slot and washing liquid bath are connected in parallel in boiling vessel and steam generator, share drawing liquid pipeline, input duct and jet chimney, described heating rod is arranged on the pipeline of boiling vessel medicinal liquid circulation, described effusion meter is arranged on the main pipeline of turnover boiling vessel, and described DCS operating system can show the liquid level of each groove tank, temperature in real time, pressure controlled pharmacy liquid pump, circulating pump and the switch of heating rod.Apparatus of the present invention are rational in infrastructure, easy to use, and preparation technology is simple, and automaticity is high, any pulping raw material can be carried out displacement cooking simulation.
Description
Technical field
The present invention relates to papermaking and experimental provision thereof, particularly relate to a kind of chemical pulp or dissolving pulp
Preparation method and test-type displacement cooking device thereof.
Background technology
Along with constantly expanding of scope of the enterprise extends with the continuous of industrial chain from now on, energy resource consumption and pollutant
Total emission volumn will increased, and traditional enterprises in pulp and paper industry lacks key technology and the core of energy-saving and emission-reduction
Heart competitiveness, propulsion energy-saving reduces discharging and will increasingly be limited by technical bottleneck from now on, wants strictly
Environmental regulation and the fierce market competition in occupy a tiny space, pulp and paper technology has been necessary for state
The target of the energy-saving and emission-reduction of family.China's paper industry comes into low consumption, low stain, low emission at present
Fast traffic lane, but really realize the target of low consumption, low stain, low emission, in addition it is also necessary to promote a large amount of first
The technology and equipment entered.The displacement cooking technology released in recent years, has obtained being widely recognized as of market.
Displacement cooking technology is a kind of energy-conservation vertical pot batch cooking pulping process, and it has lot of advantages,
Wherein by the metathesis of digestion process herb liquid, the heat energy of pot and chemicals, steam saving in reuse
Being the great advantage of displacement cooking, energy consumption is about the 1/3 of conventional boil mode.Additionally, displacement cooking more holds
Easily increasing production capacity, production capacity project below 200,000 tons, the investment using displacement cooking is low, increases further
Add production capacity to be easier to；The production capacity of displacement cooking is the most stable, uses the production line that digester arranged side by side forms,
When there being a pot to go wrong, only affect components of system as directed production capacity；Displacement cooking dress pot is simple, only uses belt
Dress pot and stuff level switch can complete to fill pot operation, it is not necessary to the wood chip metering system that supporting degree of accuracy is high；
There is not the obstructing problem of sieve plate in displacement cooking, after displacement cooking completes the operation in each stage, all can
Start circulating pump, on the one hand the fluid passage of change displacement cooking, the temperature of each point in uniform digester,
On the other hand sieve plate is reclaimed in recoil, and reverse cleaning is blocked in " faller gill " reclaimed in sieve plate；Displacement cooking is
The steaming and decocting mode that environmental protection is friendly, the sulphidity of displacement cooking is low, little to equipment corrosion, and foul smell amount is few, even
The sulphidity of continuous steaming and decocting is 25-30%, and the sulphidity of displacement cooking is 18%；Displacement cooking running and comparing
Flexibly, displacement cooking can feed change and slurry kind, displacement cooking can in turn with simultaneously with different digesters
Steaming and decocting needlebush, leaf wood and bamboo, each pot has independent formula table, is not affected by other pots；
The displacement cooking strong adaptability to chip quality, especially adapts to domestic raw materials quality poor, and fluctuation is frequent,
The situation that qualification rate is low, uses raw material classification steaming and decocting, and different types of raw material is placed in different digesters,
Using different digesting technoloy to carry out steaming and decocting simultaneously, play the advantage of various raw material, therefore displacement cooking more can
Adapt to domestic Raw Materials Situation；Displacement cooking system can also be changed the line of production dissolving pulp easily.
Patent CN203307658 discloses a kind of electric heating displacement cooking pot, and this equipment is arranged at bottom of pot body
One entrance connecting medicinal liquid circulating pump, can realize adding by several times cooking liquor in theory, improve the efficiency of heating surface,
Extension device service life, improve cooking effect, but need during displacement cooking to be quantitatively adding quantitatively to take out
Going out medicinal liquid, and need the full fluid level condition of holding in pot, said apparatus is difficult to, and not to substitution line
System is introduced.
Patent CN202482686 discloses a kind of pulping and digesting equipment with inner-outer circulation function, and this sets
Standby predominantly steaming plant, does not introduce exchange system, and when circulating in using plunger displacement pump, medicinal liquid is by upper
Extraction bottom, portion is sent into, and local cutout dry tap phenomenon, heater unprotect measure easily occurs, works as pipeline
Interior there is easy dry combustion method damage during the cutout of local.
The technique of displacement cooking is the key factor realizing through engineering approaches, due to domestic do not have set of for putting
Change the equipment of gluten substitute, it is impossible to by experiment to chemical reaction Changing Pattern in displacement cooking and technique mistake
Journey code is furtherd investigate, and displacement cooking systematic research is mainly based on technology introduction and summary.Existing
Experimental provision is had to be difficult to simulate cooking liquor replacement process, it is difficult to meet the demand of displacement cooking experiment, and
The cost price using displacement cooking device to carry out testing in factory is the highest, it is difficult to realize, accordingly, it would be desirable to
A kind of use for laboratory displacement cooking device of exploitation, to meet the demand carrying out replacing and digesting technoloy experiment.
Summary of the invention
It is an object of the invention to overcome the shortcoming and defect of above-mentioned prior art, it is provided that a kind of chemical pulp or
Dissolving pulp preparation method and test-type displacement cooking device thereof.Solve that prior art is difficult to meet displacement to steam
Boil the demand of experiment, and the cost price using displacement cooking device to carry out testing in factory is the highest, difficult
With the technical problem realized.
The present invention is achieved through the following technical solutions:
A kind of test-type displacement cooking device, including boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature
Black liquor slot 4, washing liquid bath 5, steam generator 10, DCS operating system 11, it is characterised in that:
The top liquid mouth of boiling vessel 1 is connected by main steam range between steam generator 10；Main steam range
With the interface that the interface end of boiling vessel 1 top liquid mouth is provided with valve A, main steam range and steam generator 10
End is provided with valve D；
Hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the respective inlet of washing liquid bath 5 have two
Individual interface, one of them interface connects feed liquor house steward by liquid feed valve 16, and another interface passes through steam valve
18 connection main steam ranges；Feed liquor house steward is by the top liquid mouth of valve B connection boiling vessel 1；
White liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the respective liquid outlet of washing liquid bath 5 all pass through
Liquid valve 19 connects drawing liquid house steward, total interface of drawing liquid house steward pass sequentially through sludge filter device 21, spray pump 7,
Effusion meter 9 connects the bottom liquid mouth of boiling vessel 1；
It is sequentially provided with valve C, heating rod 8 on the top liquid mouth of boiling vessel 1 and the pipeline of bottom liquid mouth, follows
Ring pump 6；
The inner bottom part of boiling vessel 1 is equipped with liquid distribution plate 102, and top is equipped with liquid distributing umbrella 103；
Bottom the bucket 101 of boiling vessel 1 and top is equipped with dismountable seam type sieve plate 104.
Described DCS operating system 11 shows boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature in real time
Black liquor slot 4 and the liquid level of washing liquid bath 5, temperature, pressure also controls spray pump 7, circulating pump 6 and heating
The switch of rod 8.
Described hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the top of washing liquid bath 5 are mounted on
Pressure transducer 15, relief valve 14, exhaust-valve 17.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4 and the side of washing liquid bath 5
While be provided with liquid level sensor 12, temperature sensor 13.
Blowdown is installed in the bottom of described hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4 and washing liquid bath 5
Valve 20.
Described liquid level sensor 12 is magnetic turnover plate type liquid level sensor；Described temperature sensor 13 is platinum electricity
Resistance rustless steel temperature sensor.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, washing liquid bath 5 material
It is two phase stainless steel.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, washs liquid bath 5 outer wall
All it is surrounded by heat-insulation layer.
Described circulating pump 6 is two phase stainless steel magnetic drive pump.
Described effusion meter 9 is ultrasonic flowmeter；Described steam generator 10 is electric heating type steam generation
Device；Described heating rod 8 protects system with anti-dry.
The method that above-mentioned test-type displacement cooking device prepares chemical pulp or dissolving pulp is as follows:
The preparation of chemical pulp
(1) preparatory stage: start steam generator 10, produce steam, then open hot white liquor groove 2,
Hot black liquor groove 3, temperature black liquor slot 4, the steam valve 18 on washing liquid bath 5 top, it is passed through steam, by hot white liquor
Medicinal liquid in groove 2 is warming up to 160 DEG C, and the medicinal liquid of hot black liquor groove 3 is warming up to 160 DEG C, temperature black liquor slot 4
Medicinal liquid is warming up to 120 DEG C, and the medicinal liquid of washing liquid bath 5 is warming up to 70 DEG C；
(2) dress pot: the bucket 101 of boiling vessel 1 is taken out, sieves accordingly according to the feature selection of raw material
Plate 104, adds about 600g over dry raw material and installs top sieve plate 104, will be equipped with the bucket 101 of raw material
Put into boiling vessel 1, and install liquid distributing umbrella 103, then pot cover 105 is installed；
(3) presteaming: open the steam valve on boiling vessel 1 top, be passed through steam, is heated to about 100 DEG C,
Remove the air in raw material；
(4) temperature is filled: pump into about 4L temperature black liquor and boiling vessel 1 is full of, then to steaming and decocting by the hot white liquor of 2L
It is passed through steam in device 1, is heated to 120 DEG C, ON cycle pump 6 and heating rod 8, heating automatically is set to
State, when the temperature in boiling vessel 1 is less than preset value, heating rod 8 can heat automatically, makes boiling vessel 1
Insulation 30min；
(5) heat is filled: pump into about 4L hot black liquor and the hot white liquor of 2L to boiling vessel 1, by former in boiling vessel 1
Some black liquor go out to send into temperature black liquor slot 4 from boiling vessel 1 upper replacement, keep pumping into flow and the stream displaced
Amount is consistent；
(6) heat up: heat is passed through steam and is warming up to 160 DEG C in filling backward digester 1, be incubated 60min,
Or determine reaction terminating, simultaneously ON cycle pump 6 according to the H factor calculated in DCS operating system 11
And heating rod 8, automatic heated condition is set to, when the temperature in digester 1 is less than preset value, heating
Rod can work automatically；
(7) displacement washing: after steaming and decocting terminates, pumps into the cleaning mixture of a certain amount of about 6L to boiling vessel 1, puts
The black liquor of the temperature higher (120-160 DEG C) swapped out initially enters hot black liquor groove 3, and temperature is relatively low
The black liquor of (< 120 DEG C) enters temperature black liquor slot 4；
(8) discharging: remaining gas in boiling vessel 1 is discharged, during until pressure reduces to 0Pa, unloads
The pot cover 105 of boiling vessel 1 takes out the mixture in boiling vessel 1；
The preparation process of dissolving pulp is as follows:
(1) preparatory stage: start steam generator 10, produce steam, then open hot white liquor groove 2,
Hot black liquor groove 3, temperature black liquor slot 4, the steam valve 18 on washing liquid bath 5 top, it is passed through steam, by white liquor groove
Medicinal liquid in 2 is warming up to 160 DEG C, and the medicinal liquid in hot black liquor groove 3 is warming up to 160 DEG C, in temperature black liquor slot 4
Medicinal liquid be warming up to 120 DEG C, washing liquid bath 5 in medicinal liquid be warming up to 70 DEG C；
(2) dress pot: being taken out by the bucket 101 within boiling vessel 1, the feature selection according to raw material is corresponding
Sieve plate 104, add 600g over dry raw material and also install top sieve plate 104, will be equipped with the bucket 101 of raw material
Put into boiling vessel 1, and install liquid distributing umbrella 103, then pot cover 105 is installed；
(3) presteaming: open the steam valve 18 on boiling vessel 1 top, be passed through steam, be heated to about 160 DEG C,
Insulation 1h, or determine reaction terminating according to the P factor calculated in DCS operating system 11；
(4) reaction is neutralized: pump into about 2L hot black liquor and the hot white liquor of 2L to boiling vessel 1, ON cycle pump
6 circulation 10min；
(5) heat is filled: pump into about 4L hot black liquor and the hot white liquor of 2L to boiling vessel 1, by former in boiling vessel 1
Some black liquor go out to send into temperature black liquor slot 4 from boiling vessel 1 upper replacement, keep pumping into flow and the stream displaced
Amount is consistent；
(6) heat up: heat is passed through steam in filling backward digester 1 and is warming up to 160 DEG C, is incubated about 60min,
Or determine reaction terminating, simultaneously ON cycle pump 6 according to the H factor calculated in DCS operating system 11
And heating rod 8, automatic heated condition is set to, when the temperature in pot is less than preset value, heating rod is automatic
Work；
(7) displacement washing: after steaming and decocting terminates, pumps into the cleaning mixture of a certain amount of (about 6L) to boiling vessel 1,
The black liquor of the temperature higher (120-160 DEG C) cemented out initially enters hot black liquor groove 3, and temperature is relatively low
The black liquor of (< 120 DEG C) enters temperature black liquor slot 4；
(8) discharging: remaining gas in boiling vessel 1 is discharged, during until pressure reduces to 0Pa, unloads
Pot cover 105 takes out the mixture in boiling vessel 1.
The present invention, relative to prior art, has such advantages as and effect:
The test-type displacement cooking device of the present invention, forms according to displacement cooking principle design, by four
Displacement tank (hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, washing liquid bath 5), it is achieved different temperatures
The displacement of black liquor, each displacement tank all can be passed through steam and heat medicinal liquid, ultrasonic flowmeter and magnetic
Turning plate type flowmeters can accurate response flow and liquid level at high temperature under high pressure.
Technical measure is simple and easy to do, and it is rational in infrastructure, easy to use, employ liquid distributor and
Being uniformly distributed of sieve plate, beneficially medicinal liquid, can carry out displacement cooking simulation to any raw material.Additionally, also
Can serve as Conventional upright circulation digester to use, also can carry out presteaming, prehydrolysis is tested.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is boiling vessel structural representation.
Fig. 3 is liquid distribution plate structural representation.
Fig. 4 is A-A cross-sectional view in Fig. 3.
Fig. 5 is liquid distributing umbrella structural representation.
Fig. 6 is another view structure schematic diagram of liquid distributing umbrella.
Fig. 7 is sieve-plate structure schematic diagram.
In figure, each numbering is corresponding entitled: 1-boiling vessel；2-hot white liquor groove；3-temperature black liquor slot；4-hot black liquor
Groove；5-washs liquid bath；6-circulating pump；7-spray pump；8-heating rod；9-effusion meter；10-steam generator；
11-DCS operating system；12-liquid level sensor；13-temperature sensor；14-pressure transducer；15-safety
Valve；16-liquid feed valve；17-exhaust-valve；18-steam valve；19-liquid valve；20-blowoff valve；21-screenings mistake
Filter；101-bucket；102-liquid distribution plate；1021-liquid distribution plate hole；103-liquid distributing umbrella；1031-liquid distributing umbrella hole；
1032-screw thread；104-sieve plate；1041-screen slot；105 pot covers.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Fig. 16.One test-type displacement cooking device of the present invention, including boiling vessel 1, heat in vain
Liquid bath 2, hot black liquor groove 3, temperature black liquor slot 4, washing liquid bath 5, steam generator 10, DCS operation
System 11；
The top liquid mouth of boiling vessel 1 is connected by main steam range between steam generator 10；Main steam range
With the interface that the interface end of boiling vessel 1 top liquid mouth is provided with valve A, main steam range and steam generator 10
End is provided with valve D；
Hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the respective inlet of washing liquid bath 5 have two
Individual interface, one of them interface connects feed liquor house steward by liquid feed valve 16, and another interface passes through steam valve
18 connection main steam ranges；Feed liquor house steward is by the top liquid mouth of valve B connection boiling vessel 1；
White liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the respective liquid outlet of washing liquid bath 5 all pass through
Liquid valve 19 connects drawing liquid house steward, total interface of drawing liquid house steward pass sequentially through sludge filter device 21, spray pump 7,
Effusion meter 9 connects the bottom liquid mouth of boiling vessel 1；
It is sequentially provided with valve C, heating rod 8 on the top liquid mouth of boiling vessel 1 and the pipeline of bottom liquid mouth, follows
Ring pump 6；
The inner bottom part of boiling vessel 1 is equipped with liquid distribution plate 102, and top is equipped with liquid distributing umbrella 103；
Bottom the bucket 101 of boiling vessel 1 and top is equipped with dismountable seam type sieve plate 104.
Described DCS operating system 11 shows boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature in real time
Black liquor slot 4 and the liquid level of washing liquid bath 5, temperature, pressure also controls spray pump 7, circulating pump 6 and heating
The switch of rod 8.
Described hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, the top of washing liquid bath 5 are mounted on
Pressure transducer 15, relief valve 14, exhaust-valve 17.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4 and the side of washing liquid bath 5
While be provided with liquid level sensor 12, temperature sensor 13.
Blowdown is installed in the bottom of described hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4 and washing liquid bath 5
Valve 20.
Described liquid level sensor 12 is magnetic turnover plate type liquid level sensor；Described temperature sensor 13 is platinum electricity
Resistance rustless steel temperature sensor.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, washing liquid bath 5 material
It is two phase stainless steel.
Described boiling vessel 1, hot white liquor groove 2, hot black liquor groove 3, temperature black liquor slot 4, washs liquid bath 5 outer wall
All it is surrounded by heat-insulation layer.
Described circulating pump 6 is two phase stainless steel magnetic drive pump.
Described effusion meter 9 is ultrasonic flowmeter；Described steam generator 10 is electric heating type steam generation
Device；Described heating rod 8 protects system with anti-dry.
The method using above-mentioned test-type displacement cooking device to prepare chemical pulp or dissolving pulp can be walked by following
Rapid realization:
Preparation (prepared by the conventional displacement cooking) step of chemical pulp is as follows:
(1) preparatory stage: start steam generator 10, produce steam, then open hot white liquor groove 2,
Hot black liquor groove 3, temperature black liquor slot 4, the steam valve 18 on washing liquid bath 5 top, it is passed through steam, by hot white liquor
Medicinal liquid in groove 2 is warming up to 160 DEG C, and the medicinal liquid of hot black liquor groove 3 is warming up to 160 DEG C, temperature black liquor slot 4
Medicinal liquid is warming up to 120 DEG C, and the medicinal liquid of washing liquid bath 5 is warming up to 70 DEG C；
(2) dress pot: the bucket 101 of boiling vessel 1 is taken out, sieves accordingly according to the feature selection of raw material
Plate 104, adds about 600g over dry raw material (different depending on raw material different quality) and installs top sieve plate 104,
Boiling vessel 1 put into by the bucket 101 that will be equipped with raw material, and installs liquid distributing umbrella 103, then installs pot cover
105；
(3) presteaming: open the steam valve on boiling vessel 1 top, be passed through steam, is heated to about 100 DEG C,
Remove the air in raw material；
(4) temperature is filled: pump into about 4L temperature black liquor and boiling vessel 1 is full of, then to steaming and decocting by the hot white liquor of 2L
It is passed through steam in device 1, is heated to 120 DEG C, ON cycle pump 6 and heating rod 8, heating automatically is set to
State, when the temperature in boiling vessel 1 is less than preset value, heating rod 8 can heat automatically, makes boiling vessel 1
Insulation 30min；
(5) heat is filled: pump into about 4L hot black liquor and the hot white liquor of 2L to boiling vessel 1, by former in boiling vessel 1
Some black liquor go out to send into temperature black liquor slot 4 from boiling vessel 1 upper replacement, keep pumping into flow and the stream displaced
Amount is consistent；
(6) heat up: heat is passed through steam in filling backward digester 1 and is warming up to 160 DEG C, is incubated about 60min,
Or determine reaction terminating, simultaneously ON cycle pump 6 according to the H factor calculated in DCS operating system 11
And heating rod 8, automatic heated condition is set to, when the temperature in digester 1 is less than preset value, heating
Rod can work automatically；Digestion process can be opened the exhaust-valve little venting about 10min on boiling vessel 1 pot cover.
(7) displacement washing: after steaming and decocting terminates, pumps into the cleaning mixture of a certain amount of (about 6L) to boiling vessel 1,
The black liquor of the temperature higher (120-160 DEG C) cemented out initially enters hot black liquor groove 3, and temperature is relatively low
The black liquor of (< 120 DEG C) enters temperature black liquor slot 4；
(8) discharging: remaining gas in boiling vessel 1 is discharged, during until pressure reduces to 0Pa, unloads
The pot cover 105 of boiling vessel 1 takes out the mixture in boiling vessel 1；
Preparation (prehydrolysis displacement cooking) step of dissolving pulp is as follows:
(1) preparatory stage: start steam generator 10, produce steam, then open hot white liquor groove 2,
Hot black liquor groove 3, temperature black liquor slot 4, the steam valve 18 on washing liquid bath 5 top, it is passed through steam, by white liquor groove
Medicinal liquid in 2 is warming up to 160 DEG C, and the medicinal liquid in hot black liquor groove 3 is warming up to 160 DEG C, in temperature black liquor slot 4
Medicinal liquid be warming up to 120 DEG C, washing liquid bath 5 in medicinal liquid be warming up to 70 DEG C；
(2) dress pot: being taken out by the bucket 101 within boiling vessel 1, the feature selection according to raw material is corresponding
Sieve plate 104, add about 600g over dry raw material (different depending on raw material different quality) and install top sieve
Plate 104, the bucket 101 that will be equipped with raw material is put into boiling vessel 1, and is installed liquid distributing umbrella 103, then pacifies
Dress pot cover 105；
(3) presteaming: open the steam valve 18 on boiling vessel 1 top, be passed through steam, be heated to about 160 DEG C,
Insulation 1h；Or determine reaction terminating according to the P factor calculated in DCS operating system 11；
(4) reaction is neutralized: pump into about 2L hot black liquor and the hot white liquor of 2L to boiling vessel 1, ON cycle pump
6 circulation 10min；
(5) heat is filled: pump into about 4L hot black liquor and the hot white liquor of 2L to boiling vessel 1, by former in boiling vessel 1
Some black liquor go out to send into temperature black liquor slot 4 from boiling vessel 1 upper replacement, keep pumping into flow and the stream displaced
Amount is consistent；
(6) heat up: heat is passed through steam in filling backward digester 1 and is warming up to 160 DEG C, is incubated about 60min,
Or determine reaction terminating, simultaneously ON cycle pump 6 according to the H factor calculated in DCS operating system 11
And heating rod 8, automatic heated condition is set to, when the temperature in pot is less than preset value, heating rod is automatic
Work；Digestion process can be opened the exhaust-valve little venting about 10min on boiling vessel 1 pot cover.
(7) displacement washing: after steaming and decocting terminates, pumps into the cleaning mixture of a certain amount of (about 6L) to boiling vessel 1,
The black liquor of the temperature higher (120-160 DEG C) cemented out initially enters hot black liquor groove 3, and temperature is relatively low
The black liquor of (< 120 DEG C) enters temperature black liquor slot 4；
(8) discharging: remaining gas in boiling vessel 1 is discharged, during until pressure reduces to 0Pa, unloads
Pot cover 105 takes out the mixture in boiling vessel 1.
Conventional gluten substitute:
(1) dress pot: being taken out by the bucket 101 within boiling vessel 1, the feature selection according to raw material is corresponding
Sieve plate 104, add about 600g over dry raw material (different depending on raw material different quality) and install top sieve
Plate 104, the bucket 101 that will be equipped with raw material is put into boiling vessel 1, and is installed liquid distributing umbrella 103, then pacifies
Dress pot cover 105.Add required cooking liquor by process requirements simultaneously.
(2) steaming and decocting: ON cycle pump 6 and heating rod 8, arranges intensification in DCS operating system 11
Time, little deflation time, temperature retention time, as with Eucalyptus as raw material, heat up 160 DEG C of 1h, little venting 10min,
160 DEG C of insulation 1.5h.
(3) discharging: after steaming and decocting terminates, discharges the gas in boiling vessel 1, until pressure reduces to 0Pa
Time, unload pot cover 105 and take out the mixture in boiling vessel 1.
As it has been described above, just can preferably realize the present invention.
Embodiments of the present invention are also not restricted to the described embodiments, and other are any without departing from the present invention's
The change made under spirit and principle, modify, substitute, combine, simplify, all should be putting of equivalence
Change mode, within being included in protection scope of the present invention.
Claims (10)
1. a test-type displacement cooking device, including boiling vessel (1), hot white liquor groove (2), hot black liquor
Groove (3), temperature black liquor slot (4), washing liquid bath (5), steam generator (10), DCS operating system
(11), it is characterised in that:
The top liquid mouth of boiling vessel (1) is connected by main steam range between steam generator (10)；Steam
Vapour house steward is provided with valve A, main steam range and steam generator with the interface end of boiling vessel (1) top liquid mouth
(10) interface end is provided with valve D；
Hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4), washing each the entering of liquid bath (5)
Liquid mouth has two interfaces, and one of them interface connects feed liquor house steward by liquid feed valve (16), another
Interface connects main steam range by steam valve (18)；Feed liquor house steward is by valve B connection boiling vessel (1)
Top liquid mouth；
Hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4), washing each the going out of liquid bath (5)
Liquid mouth all connects drawing liquid house steward by liquid valve (19), and total interface of drawing liquid house steward passes sequentially through screenings mistake
The bottom liquid mouth of filter (21), spray pump (7), effusion meter (9) connection boiling vessel (1)；
Be sequentially provided with on the top liquid mouth of boiling vessel (1) and the pipeline of bottom liquid mouth valve C, heating rod (8),
Circulating pump (6)；
The inner bottom part of boiling vessel (1) is equipped with liquid distribution plate (102), and top is equipped with liquid distributing umbrella (103)；
Bucket (101) bottom of boiling vessel (1) and top are equipped with dismountable seam type sieve plate (104)；
Described DCS operating system (11) shows boiling vessel (1), hot white liquor groove (2), hot black liquor in real time
Groove (3), temperature black liquor slot (4) and the liquid level of washing liquid bath (5), temperature, pressure also controls spray pump
(7), circulating pump (6) and the switch of heating rod (8).
Test-type displacement cooking device the most according to claim 1, it is characterised in that: described hot white liquor
Groove (2), hot black liquor groove (3), temperature black liquor slot (4), the top of washing liquid bath (5) are mounted on pressure
Sensor (15), relief valve (14), exhaust-valve (17).
Test-type displacement cooking device the most according to claim 1, it is characterised in that: described boiling vessel
(1), hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4) and the side of washing liquid bath (5)
While be provided with liquid level sensor (12), temperature sensor (13).
4. according to test-type displacement cooking device according to any one of claims 1 to 3, it is characterised in that:
Described hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4) and the bottom of washing liquid bath (5)
Blowoff valve (20) is installed.
Test-type displacement cooking device the most according to claim 3, it is characterised in that: described liquid level passes
Sensor (12) is magnetic turnover plate type liquid level sensor；Described temperature sensor (13) is platinum resistance rustless steel
Temperature sensor.
Test-type displacement cooking device the most according to claim 4, it is characterised in that: described boiling vessel
(1), hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4), washing liquid bath (5) material equal
For two phase stainless steel.
Test-type displacement cooking device the most according to claim 4, it is characterised in that: described boiling vessel
(1), hot white liquor groove (2), hot black liquor groove (3), temperature black liquor slot (4), washing liquid bath (5) outer wall is all
It is surrounded by heat-insulation layer.
Test-type displacement cooking device the most according to claim 4, it is characterised in that: described circulating pump
(6) it is two phase stainless steel magnetic drive pump.
Test-type displacement cooking device the most according to claim 4, it is characterised in that: described effusion meter
(9) it is ultrasonic flowmeter；Described steam generator (10) is electric heating type steam generator；Institute
State heating rod (8) and protect system with anti-dry.
10. use test-type displacement cooking device according to any one of claim 1 to 9 to prepare chemical pulp
Method, it is characterised in that following steps:
The preparation process of chemical pulp is as follows:
(1) preparatory stage: start steam generator (10), produce steam, then open hot white liquor groove
(2), hot black liquor groove (3), temperature black liquor slot (4), the steam valve (18) on washing liquid bath (5) top,
It is passed through steam, the medicinal liquid in hot white liquor groove (2) is warming up to 160 DEG C, the medicinal liquid liter of hot black liquor groove (3)
Temperature is to 160 DEG C, and the medicinal liquid of temperature black liquor slot (4) is warming up to 120 DEG C, and the medicinal liquid of washing liquid bath (5) heats up
To 70 DEG C；
(2) dress pot: the bucket (101) of boiling vessel (1) is taken out, according to the feature selection phase of raw material
The sieve plate (104) answered, adds 600g over dry raw material and installs top sieve plate (104), will be equipped with raw material
Boiling vessel (1) put into by bucket (101), and installs liquid distributing umbrella (103), then installs pot cover (105)；
(3) presteaming: open the steam valve on boiling vessel (1) top, be passed through steam, be heated to 100 DEG C,
Remove the air in raw material；
(4) temperature is filled: pumps into 4L temperature black liquor and 2L hot white liquor and boiling vessel (1) is full of, then to steaming
Boiler is passed through steam in (1), is heated to 120 DEG C, ON cycle pump (6) and heating rod (8), arranges
To automatic heated condition, when the temperature in boiling vessel (1) is less than preset value, heating rod (8) can be certainly
Dynamic heating, makes boiling vessel (1) be incubated 30min；
(5) heat is filled: pump into 4L hot black liquor and the hot white liquor of 2L to boiling vessel (1), by boiling vessel (1)
In original black liquor from boiling vessel (1) upper replacement go out send into temperature black liquor slot (4), keep pump into flow with
The flow displaced is consistent；
(6) heat up: heat is passed through steam and is warming up to 160 DEG C in filling backward boiling vessel (1), be incubated 60min,
Or determine reaction terminating, simultaneously ON cycle pump according to the upper H factor calculated of DCS operating system (11)
And heating rod (8) (6), automatic heated condition is set to, when the temperature in boiling vessel (1) is less than pre-
If during value, heating rod can work automatically；
(7) displacement washing: after steaming and decocting terminates, pumps into the cleaning mixture of 6L to boiling vessel (1), displaces
The black liquor that temperature is 120-160 DEG C initially enters hot black liquor groove (3), and temperature is that <black liquor of 120 DEG C enters
Enter temperature black liquor slot (4)；
(8) discharging: remaining gas in boiling vessel (1) is discharged, during until pressure reduces to 0Pa,
The pot cover 105 unloading boiling vessel (1) takes out the mixture in boiling vessel (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410564058.9A CN104404804B (en) | 2014-10-21 | 2014-10-21 | A kind of chemical pulp or dissolving pulp preparation method and test-type displacement cooking device thereof |
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|---|---|---|---|
| CN201410564058.9A CN104404804B (en) | 2014-10-21 | 2014-10-21 | A kind of chemical pulp or dissolving pulp preparation method and test-type displacement cooking device thereof |
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| CN104404804B true CN104404804B (en) | 2016-10-05 |
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| CN106032655B (en) * | 2015-03-20 | 2020-07-21 | 山东泉林纸业有限责任公司 | Continuous boiling method for grass raw materials |
| CN105256633B (en) * | 2015-10-30 | 2017-08-04 | 海南金海浆纸业有限公司 | One kind steams solution kettle sieve plate and blocks online recoil process method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067080A (en) * | 1992-04-15 | 1992-12-16 | 汪仲熙 | The low-loss and energy-saving recovery and steam-boiling technology for chemically making non-wooden pulp |
| CN1566521A (en) * | 2003-06-23 | 2005-01-19 | 王广维 | Non-wood fibre displacement, continuous boiling method and apparatus therefor |
| CN101748635A (en) * | 2010-03-18 | 2010-06-23 | 白雪刚 | Method for preparing slurry by replacement cooking |
| CN102154874A (en) * | 2011-04-29 | 2011-08-17 | 白福安 | Replacement cooking pulping method |
| CN102936862A (en) * | 2012-11-26 | 2013-02-20 | 天津市恒脉机电科技有限公司 | System for producing pulp through intermittent replacement and stewing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20090079A (en) * | 2009-03-05 | 2010-09-06 | Andritz Inc | Heat recovery from waste cooking liquor at a pulp mill digester |
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2014
- 2014-10-21 CN CN201410564058.9A patent/CN104404804B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067080A (en) * | 1992-04-15 | 1992-12-16 | 汪仲熙 | The low-loss and energy-saving recovery and steam-boiling technology for chemically making non-wooden pulp |
| CN1566521A (en) * | 2003-06-23 | 2005-01-19 | 王广维 | Non-wood fibre displacement, continuous boiling method and apparatus therefor |
| CN101748635A (en) * | 2010-03-18 | 2010-06-23 | 白雪刚 | Method for preparing slurry by replacement cooking |
| CN102154874A (en) * | 2011-04-29 | 2011-08-17 | 白福安 | Replacement cooking pulping method |
| CN102936862A (en) * | 2012-11-26 | 2013-02-20 | 天津市恒脉机电科技有限公司 | System for producing pulp through intermittent replacement and stewing |
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