CN102640979B - Method for preparing reconstituted tobacco paper base made from tobacco stems - Google Patents
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Abstract
The invention discloses a method for preparing reconstituted tobacco paper base made from tobacco stems, wherein the reconstituted tobacco paper base is prepared through taking the tobacco stems as a raw material and adopting a papermaking method and the preparing method comprises the steps of impregnation, defibrination, pulping, sheet making and drying of the tobacco stems. According to the invention, a technical scheme capable of optimizing the comprehensive property of the reconstituted tobacco paper base made from the tobacco stems is provided, which comprises treatment conditions of key processes of the impregnation, the defibrination, the pulping and the like; and a technical mean capable of improving the fiber morphology of the tobacco stems and the physical property of paper pulp is obtained. Showed by results, contents of water-soluble sugar, total plant alkaloid, chlorine and total nitrogen in the tobacco stems are decreased to varying degrees and the holocellulose content is relatively increased by 12.4% after the impregnation and extraction in the technical scheme provided by the invention are adopted; the fiber length of the obtained tobacco stem pulp is longest and the bulk of the finished paper is highest through selecting different types of refining plates and different defibrination gaps; and the tensile index, the tear index, the bulk, the air permeability and the burst index of a paper base product are appropriate and the good quality of reconstituted tobacco is guaranteed through combining the design of the beating degree of the tobacco stem pulp and the technical condition of the sheet making.
Description
Technical field
The invention belongs to reconstituted tobacco production technical field, be specifically related to the preparation method of a kind of offal reconstituted tobacco processed.
Background technology
Reconstituted tobacco is to utilize the tobacco waste producing in tobacco processing course to obtain by certain processing technology manufacture.The advantages such as reconstituted tobacco density that paper process is produced is little, filling value large, good mechanical property, tar content are low, reduce harmful substance in reconstituted tobacco and improve the effect of every quality index of reconstituted tobacco better, are the main production technologies of current reconstituted tobacco.Therefore, sucking quality and the physical property of the processing technology of paper process to reconstituted tobacco played crucial effect.
Offal account for tobacco leaf heavy 25～30%, in production of cigarettes process, can produce a large amount of offal, China has the offal resource of few hundred thousand tonnes of to go out of use every year, causes waste and the environmental pollution of resource.It is the important source material of manufacturing reconstituted tobacco through the offal of suitable treatment.
Tobacco stalk fibre, as one of main component of reconstituted tobacco, accounts for 70% left and right of reconstituted tobacco quality, and therefore, the fibre morphology of offal and paper properties have very important impact to the performance of reconstituted tobacco.
" pre-test of papermaking-method reconstituted tobaccos abstraction technique " (Chang Jiheng, Niu Congyang, Zhang Caiyun) utilizes orthogonal design, study respectively the best leaching condition of offal, offal, thereby draw: when single tank batch (-type) leaching, offal is selected temperature 60 C, time 40min, ratio 1:7 is more suitable; " research of papermaking-method reconstituted tobaccos abstraction technique " (Sun Xia, Su Wenqiang) proposes the best extractant condition of offal: 60 ℃ of extraction temperature, and solid-liquid ratio 1:5, extraction time 70min, the extraction yield of offal is 48.52%; Etc..Prior art including above-mentioned document, the research of the pulpability to offal all mainly concentrates on the dipping extraction stage, less on affecting the research of the form of tobacco stalk fibre and other critical processes of paper properties of tobacco stalk fibre in offal reconstituted tobacco preparation process processed, have no correlation technique report.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the preparation method of a kind of offal reconstituted tobacco processed is provided, by researching and analysing the character of tobacco stalk fibre, sum up the relation between critical process and the form of tobacco stalk fibre and the paper properties of tobacco stalk fibre, the optimum process condition that comprises dipping, defibrination, making beating committed step is provided, realize the comprehensive improvement to reconstituted tobacco paper substrate performance, finally provide technical foundation for improving the quality of reconstituted tobacco and the quality of cigarette.
Object of the present invention is achieved by the following technical programs:
The preparation method of a kind of offal reconstituted tobacco paper substrate processed is provided, adopts paper process to prepare take offal as raw material, dipping extracts offal, filters to obtain stem extracting solution and offal slag; Offal slag obtains sheet paper base through defibrination, handsheet, pressing and drying; Return and be coated onto on thin section for tobacco paper substrate extract as coating fluid.Comprise the following steps:
(1) impregnation process of offal;
Described offal adopts single hop dipping to extract, and dipping extraction conditions is: solid-liquid ratio 1:7, and dipping temperature is 60 ℃, dip time is 100 minutes;
Preferably, the present invention adopts three stage countercurrent extraction processes to extract offal, and offal enters subsequent step after first order extraction, second level extraction and the third level are extracted; The third level is extracted and adopts clear water to extract, the third level extract adverse current obtaining enters the second level and floods extraction, second level extract another mistake flows to into the first order to be extracted, last first order extract carries out evaporation and concentration and obtains coating fluid after pretreatment, is coated onto on thin section for tobacco paper substrate in order to last returning; Offal after extraction enters next step for defibrination; Described three stage countercurrent extraction conditions are that liquor ratio is 1 ﹕ 7, temperature: 80 ℃, and time: 40min, in three grades of leaching process, the process conditions of every one-level do not change;
(2) offal after step (1) impregnation process is carried out to defibrination processing;
Refining process of the present invention is from existing by controlling the electric current of fiberizer, to carry out defibrination operation significantly different, and the present invention adopts mill, grinding clearance, defibrination hop count and the refining concentration of controlling defibrination to obtain good tobacco stalk fibre quality; Described defibrination comprises first paragraph and second segment defibrination, and refining concentration is all 20%(mass percent concentration, the solid content concept in can producing with reference to paper process); First paragraph grinding clearance (gap between mill Moving plate and price fixing) is 0.4mm; The second grinding clearance is 0.2mm;
Described first paragraph mill parameter is:
Described second segment mill parameter is:
If (as the final beating degree of needs control) according to actual needs, can also carry out the 3rd section of defibrination, can require to adjust according to concrete making beating the gap of defibrination; Preferred the 3rd segment process condition is:
Refining concentration is 20%; Grinding clearance is 0.15mm; Mill parameter is with reference to the parameter of second segment defibrination mill.
The KRK-2500 II high-density paste mill that the present invention preferably adopts Japanese KRK company to produce carries out defibrination operation and also can adopt other and described high-density paste mill to have the equipment of similar mill performance.If use KRK-2500 II high-density paste mill, first paragraph defibrination preferably adopts the A dish of its equipment, second and the 3rd section of defibrination adopt the D dish of its equipment.
Preferred technical scheme is that first paragraph adopts A dish, and employing grinding clearance is 0.4mm; Second adopts D dish, and grinding clearance is 0.2mm; Refining concentration is all 20%.
More preferred scheme is that first paragraph adopts A dish, and employing grinding clearance is 0.4mm; Second adopts D dish, and grinding clearance is 0.2mm; The 3rd section of defibrination adopts D dish, and grinding clearance is 0.15mm.Refining concentration is all 20%.First paragraph defibrination disposed slurry dewaters with dewaterer, carries out second segment defibrination after equilibrium water conten; Second segment defibrination disposed slurry dewaters with dewaterer, carries out the 3rd section of defibrination after equilibrium water conten;
(3) offal obtaining through step (2) defibrination is starched the processing of pulling an oar; The beating consistency of described making beating is 10%, and beater roll(er) is 0.2 mm with beating gap, chamber, and beating pressure is 3.33 N/mm;
Preferably, the invention provides preferred making beating revolution is 1500～2500, and preferred beating degree is 20～30
0sR.The present invention preferably adopts PFI mill to starch to offal the operation of pulling an oar.
(4) handsheet and be drying to obtain described offal reconstituted tobacco paper substrate processed.
Preferably, the offal slurry after making beating adopts Austria to produce the quick handshcet former of PTI and copies the quantitative 70g/m of being
2the scraps of paper are also dry.
The invention provides the reconstituted tobacco paper substrate that described preparation method prepares.
The invention has the beneficial effects as follows:
Fibre morphology in paper making raw material mainly refers to the length of fiber, width, the homogeneity of length and width, length and width are non-fibrocyte content etc. when, using the fibre morphology in paper making raw material as the quality that affects reconstituted tobacco and prepare paper substrate raw material, determine one of important evidence of process conditions, constantly carry out the analysis and research of paper making raw material fibre morphology to the Paper Pulp of offal and even other plant fibrous raw material is evaluated, be convenient to utilize more effectively and rationally plant fiber material, this not only plays important technological guidance's meaning for the production application of cigarette, and China's paper industry of producing paper making raw material famine is seemed to particularly important equally.Fibre length directly has influence on tearability, tensile strength, the bursting strength equal strength performance indications of paper, thereby fibre length is to evaluate an important indicator of raw fibre quality; For the impact of objective comprehensive sign fibre length on paper properties, fibre length adopts arithmetic mean of instantaneous value, length weighted average and mass weighted mean value to measure conventionally, and experiment shows, weight average length is the physical length of accurate response fiber more.Fibre coarseness refers to the quality of fiber in 100m fiber total length, with mg or mg (100m)
-1represent.Fiber width or rugosity are subject to the impact of each density of fraction in fibrocyte wall thickness, cell and fiber.Fibre coarseness not only affects the pi of strength of paper, but also can have influence on the indexs such as the water imbibition, air permeability, smoothness of paper.Rugosity is directly proportional to the cross-sectional area of fiber, the fibrocyte wall thickness that rugosity is large, and specific area is less, and fiber pliability is poor, easily conquassation, the fiber contact point that is interweaved is less, is unfavorable for the combination that interweaves between fiber.The rugosity of fiber is less, and the flexibility of fiber is better, and increase in interfibrous crosspoint, and between fiber, relative bonded area increases, and the adhesion between fiber improves, and paper density increases, thereby improves the every intensity index of paper.Visible, fibre coarseness can affect the combination that interweaves between fiber, and then affects the various performance indications of paper.Fiber quality analyzer can be measured fibre length and distribution, fibre coarseness, fines content, softwood pulp/hardwood pulp ratio, fiber crimp (Cur1) index and distribution and fiber kink (Kink) index.Fibre morphology parameter is manufactured paper with pulp with to become the properties influence of paper very large to fiber.
Applicant has carried out creative analysis by great many of experiments in conjunction with production practical situations, from the quality of reconstituted tobacco paper substrate, the technical scheme of optimizing offal reconstituted tobacco paper substrate processed combination property is provided, comprise the Accurate Analysis of the critical process treatment conditions such as dipping, defibrination, making beating, obtain the overall technology means that improve tobacco stalk fibre form and physical property of pulp.Result shows, adopt technical solution of the present invention dipping extract after in offal water-soluble sugar, total alkaloid, chlorine and total nitrogen content have decline in various degree, holocellulose content has improved 12.4% relatively; By selecting the abrasive disc of different model and different grinding clearances, the fibre length that has guaranteed preparation-obtained offal slurry is the longest, become the bulk of paper the highest, in conjunction with the offal slurry design of beating degree and the technical conditions of handsheet, paper-based products tensile index, tear index, bulk, air permeability, burst index are suitable, have guaranteed the better quality of reconstituted tobacco.
Accompanying drawing explanation
Fig. 1 is the shape facility figure on the chassis of the present invention's different model used; Fig. 2 is fibre morphology (gap: the 0.5mm) figure after A mill slurry; Fig. 3 is fibre morphology (gap: the 0.4mm) figure after A mill slurry; Fig. 4 is fibre morphology (gap: the 0.3mm) figure after A mill slurry; Fig. 5 is fibre morphology (gap: the 0.3mm) figure after J mill slurry; Fig. 6 is fibre morphology (gap: the 0.25mm) figure after J mill slurry; Fig. 7 is fibre morphology (gap: the 0.2mm) figure after J mill slurry; Fig. 8 is D dish, the fibre-diagram of grinding clearance 0.2mm; Fig. 9 is J dish, the fibre-diagram of grinding clearance 0.15mm; Figure 10 is J dish, the fibre-diagram of grinding clearance 0.2mm; Figure 11 is K dish, the fibre-diagram of grinding clearance 0.15mm; Figure 12 is K dish, the fibre-diagram of grinding clearance 0.2mm; Figure 13 is D dish, the fibre-diagram of grinding clearance 0.15mm; Figure 14 is the affect figure of making beating revolution on beating degree, tensile index; Figure 15 is the affect figure of beating degree on burst index, tear index; Figure 16 is the affect figure of beating degree on air permeability, bulk; Figure 17 is the SEM of tobacco stalk fibre figure under conditions of beating not; Figure 18 is the SEM figure that offal making beating 1500 turns tobacco stalk fibre under condition; Figure 19 is the SEM figure that offal making beating 3500 turns tobacco stalk fibre under condition; Figure 20 is that three stage countercurrents extract flow chart; Figure 21 extracts the affect figure of progression on yield and recovery rate; Figure 22 extracts the affect figure of progression on total reducing sugar, total alkali, chlorine and total nitrogen recovery rate.
Further describe the present invention below in conjunction with the drawings and specific embodiments.The raw material sources that adopt in the present embodiment only adopt for explanation technological design of the present invention, therefore do not limit technological design thought of the present invention; Unless stated otherwise, the instrument and equipment of employing is all the art routine instrument device.
1, experimental raw: experiment is provided by Guangdong China Tobacco Industry Co.,Ltd with offal refrigerates the offal of gained after conventional beating and double roasting under 4 ℃ of conditions, and pack equilibrium water conten is for subsequent use.Can adopt commercial other offals.
2, dipping extracts: the extraction of offal can be with reference to existing routine.It is in digital display thermostat water bath, (can adopt golden happy HHS type digital display thermostat water bath, also can adopt other similar water-baths) to carry out that the offal single hop dipping of the present embodiment extracts experiment.First offal is packed in polyethylene sealing bag, add the distilled water (liquor ratio 1:7) of certain volume according to experiment condition, and put into oneself and rise to the water-bath of 60 ℃, insulation 100min.During dipping extracts, rub once every 10min, so that reaction evenly.Offal single hop dipping has extracted rear employing dewaterer and has carried out drying dehydration, and equilibrium water conten, for defibrination.
3, defibrination: carry out defibrination in the KRK-2500 II high-density paste mill that the offal after impregnation process produces in Japanese KRK company, it is 20% that refining concentration is set.First paragraph defibrination disposed slurry dewaters with dewaterer, and equilibrium water conten carries out second segment defibrination after 24 hours; Second segment defibrination disposed slurry dewaters with dewaterer, and equilibrium water conten carries out the 3rd section of defibrination after 24 hours.
Wherein, the important technological parameters of KRK-2500 II high-density paste mill: liquid contacting part:: SUS-316 stainless steel; Adjustable space: 1/100mm; Mill is pressed chassis: stainless steel, chassis diameter 305mm; The speed of mainshaft: 3000 revs/min; Supply power: 200/220V three-phase alternating current, 22KW/30KW; Feeder: screw type; Feeder power supply: 200/220V three-phase alternating current, 0.2KW infinitely variable speeds.
KRK-2500 II high-density paste mill chassis is made up of two parts: making beating district and fine grinding district, then offal is tentatively smashed and discongested completely and smash in fine grinding district in making beating district.Chassis material is high chromium-stainless steel.An equipment is made up of 6 chassis (mill), and each mill is made up of the abrasive disc of 3 120 °, comprises the surfaces of revolution and stationary plane.
A dish groove thickness shown in accompanying drawing 1A is moderate, be oblique radiation, circumference has plasma resistance ring (ring width 4.5mm) between corase grind district and fracture area, to have an annular slurry gear (2.5～3mm), fracture area tapering is 7 °, the oblique angle of fine grinding district tooth is 130 °, and in this plane, tooth flute profile is the 10834N flute profile that Japanese Xiong Gu Li Ji Co., Ltd. manufactures.Fine grinding district has transverse tooth thickness, tooth is many, ditch is narrow feature, and use result shows: this flute profile is suitable for high consistency refining, is mainly used in defibrating, also has fibrillating effect to a certain degree.Distribute from the number of teeth of accompanying drawing 2A, can be clear that You Sange district, refine district, corase grind district, fracture area.Accompanying drawing 1D is depicted as abrasive disc D dish, and accompanying drawing 1J is depicted as J dish, and accompanying drawing 1K is depicted as K dish, and the tooth type structures size in A, D, J, K dish fluted disc Shang Ge district is shown in Table 1 (or consulting producer).From accompanying drawing 1, the D dish number of teeth is relatively less, and the flank of tooth is wider, and groove width is relatively little, and in this plane, tooth flute profile is the B631AN flute profile that Japanese Xiong Gu Li Ji Co., Ltd. manufactures.J coils D2A507; K coils D46073
Table 1 A, D, J, K coil tooth proportions
The present invention sums up and obtains through great many of experiments, for the refining effect of obtaining, to the tobacco stalk raw material through impregnation process, can not just can realize by a kind of abrasive disc fibrillatable and the fibrillating of height.By continuous experimental summary and analysis, adopt the segmentation defibrination of two sections (or more than two sections) can guarantee fibrillatable and the fibrillating of the height that obtains offal.Concrete implementation method is to adopt same disc mill, reach theory analysis and research approach and target formerly by the mode of changing abrasive disc, first determine and use A to coil take defibrating plate as main, pass through defibrination, the connection of separation or broken fiber, to be dissociated into single fiber; Second segment is changed different abrasive discs on same fiberizer, take the fibrillating of realizing single fiber as main, becomes specific area fubril very, thereby improve interfibrous binding ability by complete pars fibrosa.
4, PFI making beating: the PFI mill (Mark VI NO.621) that the slurry after defibrination adopts HAMJERN MASKJN A/S HAMAR NORWAY company to produce is pulled an oar, and beating consistency is 10%, and beater roll(er) is 0.2mm with beating gap, chamber, and beating pressure is 3.33Nmm
-1.The beating degree of making beating disposed slurry is measured and is adopted Xiao Baier-Rui Gele YQ-Z-13 beating degree analyzer to measure.
5, handsheet: can carry out handsheet with reference to existing routine techniques.The present embodiment is that it is 70g/m that the quick handshcet former of slurry employing Austria product PTI after making beating is copied quantitative
2the scraps of paper are also dry.90 ℃ of baking temperatures, drying time 12min, vacuum 0.09MPa.The scraps of paper, the lower processing of iso standard constant temperature and humidity condition (23 ± 1 ℃ of relative humidity 50 ± 2% and temperature) 24 hours, are then surveyed its physical performance index.
6, detect and analyze: the anti-tensile tester that tensile strength and tensile index adopt L & W company of Sweden to produce is measured.The tearability tester that tear index adopts L & W company of Sweden to produce is measured.The permeating degree tester that air permeability adopts L & W company of Sweden to produce is measured.
7, Kajaani FS300 fibre analysis: accurately take the fiber to be measured that is equivalent to 0.2g oven dry stock amount (accurately to 0.0001g), adding water is uniformly dispersed and is diluted to 5000mL obtains fibrous suspension, accurately measure described fibrous suspension 150mL as test sample, according to ISO16065 testing standard, adopt Kajaani FS300 fiber quality analyzer to measure the fiber properties indexs such as the length of fiber, width, fines content.
8, result and analysis
(1) impact of first paragraph defibrination on tobacco stalk fibre
Offal after first paragraph adopts A dish, different grinding clearance to dipping carries out defibrination, and the present embodiment is chosen and adopted grinding clearance is that 0.5mm, 0.4mm, 0.3mm carry out the tobacco stalk fibre that tobacco stalk fibre form after defibrination is shown in after accompanying drawing 3,4 and 5(defibrination and adopt conventional digital single-lens reflex camera to take).
Adopt different dishes and grinding clearance to obtain different frotation effects.From the defibrination result shown in accompanying drawing 2,3,4, when grinding clearance is 0.5mm, in gained offal slurry, retaining more fibre bundle, do not reach the object of defibrating preferably; In the time that grinding clearance is 0.4mm, although still there is a fraction of fibre bundle in offal slurry, substantially dissociate into fiber, fiber condition is good; In the time that grinding clearance is 0.3mm, offal has all dissociated into fiber, but gained tobacco stalk fibre has had quite a few to be cut off, and fiber properties is as shown in table 2.Adopt said method, constantly test detection analysis and summary according to offal character, finally determine that first paragraph defibrination adopts A dish, grinding clearance is 0.4mm, and now offal has dissociated into fiber substantially, and fiber condition is good.
Table 2 A dish first paragraph defibrination fiber properties
| Abrasive disc model | Grinding clearance/mm | Beating degree/ 0SR | Weight in wet base/g |
| A | 0.5 | 9 | 16.6 |
| A | 0.4 | 9 | 15.1 |
| A | 0.3 | 9 | 13.3 |
(2) second and third section of defibrination impact on tobacco stalk fibre
After the selected A dish of first paragraph defibrination grinding clearance is 0.4mm, change abrasive disc, carry out the experiment of second segment defibrination.In order to determine the gap of second segment defibrination, in conjunction with the performance of fiber after offal characteristic and first paragraph defibrination, the present invention adopts different dishes and grinding clearance to carry out experimental study analysis.Take different grinding clearances as example, accompanying drawing 5,6 and 7 provides and has adopted respectively the grinding clearance of 0.30mm, 0.25mm and 0.20mm to carry out lab scale experiment gained offal slurry form (operation as an example of J dish example), from accompanying drawing, in the time that grinding clearance is 0.3mm and 0.25mm, gained offal slurry is still more coarse, stiff; In the time that grinding clearance is 0.20mm, the offal that obtains slurry is finer and smoother, soft, and fiber had certain wire-dividing broom purification ability, is 0.20mm so select the gap of second segment defibrination.The experimental result of second segment defibrination is as shown in table 3.
Table 3 offal second segment defibrination experimental result (J dish)
| Abrasive disc model | Grinding clearance/mm | Beating degree/ 0SR | Weight in wet base/g |
| J | 0.30 | 18 | 5.5 |
| J | 0.25 | 19 | 4.9 |
| J | 0.20 | 23 | 2.4 |
The gap of selected second segment defibrination is 0.2mm, then under the condition that is 0.2mm in gap respectively, selects different mills to carry out the experiment of second segment defibrination, after second segment defibrination, does not change abrasive disc, carries out the 3rd section of defibrination.Experimental result is as shown in table 4.
The weight in wet base of fiber is secondary indication average fiber length, and more fubril average length is less for weight in wet base, and the larger average fiber length of weight in wet base is longer.Beating degree is reflection making beating degree, weigh the index (drainability) of deckering complexity, concentrated expression fiber be cut off, swollen, wire-dividing broom purification, fibrillating degree.From table 4, second segment defibrination D dish and K dish are all obtained good refining effect, and the beating degree of tobacco stalk fibre is respectively 17
0sR and 26
0sR, weight in wet base is 4.9g and 5.1g; Second segment adopts J mill slurry, and the beating degree of tobacco stalk fibre is 25
0sR, weight in wet base is 2.3g, the average fiber length that J dish gained offal slurry is described is less than the offal slurry of D, two dish gained of K.
The 3rd section of unified 0.15mm grinding clearance that adopts carries out defibrination, D, J, K dish carry out the 3rd section of defibrination experimental result and are shown in Table 4, and tobacco stalk fibre is after the 3rd section of defibrination, and the weight in wet base suppression ratio of fiber is very fast, illustrate that offal is after the 3rd section of defibrination, average fiber length suppression ratio is very fast.After the 3rd section of defibrination, the beating degree of D dish gained offal slurry is minimum, is 28
0sR, the weight in wet base of fiber is 2.0g; The weight in wet base minimum of J dish gained offal slurry, is 0.9 g, illustrates that the 3rd section adopts J dish to carry out defibrination, larger to the cut-out of tobacco stalk fibre; The weight in wet base maximum of K dish gained offal slurry is 3.1g.
Second and third section of defibrination experimental result of table 4 offal
| Defibrination hop count | Abrasive disc model | Grinding clearance/mm | Beating degree/ 0SR | Weight in wet base/g |
| Two | D | 0.2 | 17 | 4.9 |
| Two | J | 0.2 | 25 | 2.3 |
| Two | K | 0.2 | 26 | 5.1 |
| Three | D | 0.15 | 28 | 2.0 |
| Three | J | 0.15 | 45 | 0.9 |
| Three | K | 0.15 | 44 | 3.1 |
* in table 4, second segment grinding clearance: 0.2mm; The 3rd section of grinding clearance: 0.15mm; What second segment defibrination and the 3rd section of defibrination adopted is identical abrasive disc model.
Second and third section of defibrination experimental result of table 5 offal (slurry after sieve)
| Abrasive disc model | Grinding clearance/mm | Screened yield/% | Thick slag rate/% | Beating degree/ 0SR | Weight in wet base/g |
| D | 0.2 | 76.88 | 2.90 | 15 | 6.1 |
| J | 0.2 | 71.43 | 2.44 | 16 | 2.6 |
| K | 0.2 | 70.94 | 3.61 | 15 | 6.8 |
| D | 0.15 | 77.51 | 1.13 | 20 | 2.4 |
| J | 0.15 | 74.88 | 0.26 | 23 | 1.2 |
| K | 0.15 | 87.93 | 0.89 | 28 | 3.0 |
Contrast by analysis, determine that adopting the ZQS5 type pulp screen that sieve plate sieve seam is 0.3mm (being the dull and stereotyped vertical pulp screen of Φ 300mm) to connect slurry technical scheme to the tobacco stalk fibre after second segment and the 3rd section of defibrination screens offal slurry, selected offal slurry adopts 150 object polyester mesh bags to connect slurry, and experimental result is as shown in table 5.From table 5, D, J, K mill slurry, compare with the offal slurry (shown in table 4) of not screening, and after screening, the beating degree of offal slurry has decline in various degree, and weight in wet base increases obvious.Main cause is that screening adopts 150 object polyester mesh bags to connect slurry, in screening process owing to adopting a large amount of dilution water to rinse, causing being less than 150 object components runs off larger, can find out from the situation of screened yield and thick slag rate, the large percentage that the component running off accounts for, second segment defibrination is about 20%～25%, and the component that the component of the 3rd section of defibrination K dish loss accounts for the loss of 12%, D, J dish accounts for 21%～25%.
Adopt fiber quality analyzer to measure to second and third section of offal slurry after screening, measure the length of offal slurry, content and the fibre coarseness of fiber fines, test result is shown in Table 6.From the result of fibre analysis, the fibre length of the offal of second segment defibrination is longer, and the fibre length maximum of D dish gained offal slurry, is secondly K dish, is J dish afterwards, and fibre length all has impact to the various strength characters of paper, but influence degree difference.After the 3rd section of defibrination, the fibre length of offal slurry, than the decline to some extent of second segment defibrination, coils but remain D the fibre length maximum that gained offal is starched, and is secondly K dish, is J dish afterwards.Therefore, second segment and the 3rd section of employing D mill slurry, the fiber quality of gained offal slurry is better.
Table 6 Kajaani FS300 fibre analysis result
Except fibre length, rugosity, tiny constituent content is also to evaluate important indicator of fibrous raw material quality good or not.High-quality fibrous raw material all contains the non-fibrocyte of small amount conventionally, because non-fibrocyte intensity is little, form is short and small, and geometry is irregular, and the power that interweaves is poor, and too high levels can cause that paper pulp yield declines, impact washing.Drainage difficulty in paper-making process, l Water Paper page intensity difference, causes roll banding broken end, impact is produced, and finally causes paper strength to reduce.Second segment defibrination, the fines content of D, J, K dish gained offal slurry is more or less the same; The 3rd section of defibrination, the fines content maximum of K dish gained offal slurry, is that 35.77%, J dish gained offal slurry fines content is minimum, is 21.96%.Accompanying drawing 8～13 is the fiber length distribution of different abrasive disc models, different defibrination hop count and grinding clearance
Figure.
(3) offal slurry physical property
Adopt PFI mill to pull an oar to the second segment offal slurry after screening, control beating degree 20～30
0between SR, the offal slurry of the 3rd section is not pulled an oar, then experimental result is as shown in table 3～6,
Carry out handsheet, detect physical property, experimental result is as shown in table 7.
Experimental result after table 7 PFI making beating
| Abrasive disc model | Grinding clearance/mm | Making beating revolution/turn | Beating degree/ 0SR | Weight in wet base/g |
| D | 0.2 | 100 | 28 | 1.3 |
| J | 0.2 | 100 | 28 | 0.8 |
| K | 0.2 | 100 | 30 | 1.8 |
| A | 0.2 | 800 | 26 | 1.7 |
| A | 0.3 | 600 | 24 | 3.1 |
Note: A dish 0.3 is one section of defibrination.
From the experimental result of table 7, be quantitatively 70g/ m in identical manufacturing paper with pulp
2the offal sheet paper base of manufacturing paper with pulp under condition, offal that different abrasive discs and different mill make slurry sample, the tensile strength of the offal sheet paper base making is better, and tensile strength is all greater than 1kN, joining to copy and create favorable conditions for follow-up offal slurry and offal.From the bulk of gained offal sheet paper base, adopting D dish grinding clearance is the second segment offal slurry of 0.2mm gained, becomes the bulk of paper the highest, is 1.78 cm again
3/ g; Adopting D dish grinding clearance is the 3rd section of offal slurry of 0.15mm gained, and the J of identical defibrination hop count, K coil relatively, and it is 1.60cm that the offal of gained is starched bulk
3/ g, also starches compared with the offal that J, K two coil gained.Compare with J, K two dishes, because the D dish number of teeth is relatively less, the flank of tooth is wider, groove width is relatively little, can effectively strengthen the defibrination effect of the flank of tooth in defibrination process, suppresses cutting action, thereby strengthen wire-dividing broom purification ability, the offal pulp fibres length of gained is longer, and rugosity is better, and the offal sheet paper base physical property of making is better.
The different abrasive disc defibrination of table 8 paper substrate physical property
Note: in table 8 pattern, D, J, K, A are abrasive disc model, 0.3,0.2,0.15 is grinding clearance; Example: D0.2 is the slurry sample that D dish grinding clearance is 0.2mm.
Adopt disc mill to carry out slurrying to offal, preferably take the mode of three sections of defibrinations can obtain good effect, particularly, the grinding clearance of first paragraph and second segment is that 0.4mm and 0.20mm can obtain good refining effect, the 3rd section according to actual needs (as controlled final beating degree) adjust the gap of defibrination.
Carry out fiber quality analysis and offal sheet paper base Analysis of Physical by the prepared offal slurry of the abrasive disc to different (D dish, J dish and K dish), result shows, D dish is more applicable to offal slurrying, and the fibre length of D dish gained offal slurry is the longest, becomes the bulk of paper the highest.
Offal adopts D dish to carry out (first paragraph, second segment grinding clearance are respectively 0.4mm, 0.2mm) after two sections of defibrinations, and the fibre length of gained offal slurry is 1.62mm, and rugosity is 1.077mg/m; The tensile strength of obtained offal sheet paper base is 1.74 kN/m, and bulk is 1.78 cm
3/ g.
The reconstituted tobacoo that obtained offal sheet paper base is prepared in conjunction with existing common process is applied in cigarette, carries out sensory evaluation by 7 professional members of smoking, the softer silk floss of product flue gas, exquisiteness, and flow velocity is slower, and long sense increases to some extent; Fragrance texture is more clear, bright, thoroughly send out, and harmony is better.
Through the 3rd section of defibrination (grinding clearance is 0.15mm) afterwards, the fibre length of obtained offal slurry is 1.30mm to offal, and rugosity is 0.659mg/m; The tensile strength of obtained offal sheet paper base is 1.63 kN/m, and bulk is 1.50 cm
3/ g.
The reconstituted tobacoo that obtained offal sheet paper base is prepared in conjunction with existing common process is applied in cigarette, carries out sensory evaluation by 7 professional members of smoking, the softer silk floss of product flue gas, exquisiteness, and flow velocity is slower, and long sense increases; Fragrance texture is more clear, bright, thoroughly send out, and harmony is better, and assorted gas is less, and flue gas moisture feeling increases, and oral cavity is cleaner, and global comfort gets a promotion.
1, raw material: experiment is provided by Guangdong China Tobacco Industry Co.,Ltd with offal refrigerates after the offal of gained after conventional beating and double roasting is fetched under 4 ℃ of conditions, and pack equilibrium water conten is for subsequent use.
2, experimental technique
(1) dipping extracts: the experiment condition that offal dipping extracts is as follows: liquor ratio 1:7, temperature 60 C, times 100 min.It is to produce in normal experiment electric cooking pot (plain edition) ZT1-00/15L(Xingping City Zhong Tong rig for testing Co., Ltd that offal single hop dipping extracts experiment) in carry out.Offal dress pot amount is 1500 g, first the extraction water calculating by liquor ratio is joined in digester and is preheating to assigned temperature, adds offal, builds pot cover and is rotated extraction, is incubated to official hour.Offal single hop dipping has extracted rear employing dewaterer and has carried out drying dehydration, and equilibrium water conten, for defibrination.
(2) defibrination: carry out two sections of defibrinations in the KRK-2500 II high-density paste mill that the offal after impregnation process produces in Japanese KRK company, refining concentration is 20%.
(3) making beating: the PFI mill (Mark VI NO.621) that the offal slurry after defibrination adopts HAMJERN MASKJN A/S HAMAR NORWAY company to produce is pulled an oar, beating consistency is 10%, beater roll(er) is 0.2 mm with beating gap, chamber, and beating pressure is 3.33 N/mm.Described making beating revolution is 1500～2500, and beating degree is 20～30
0sR.The beating degree of making beating disposed slurry is measured and is adopted Xiao Baier-Rui Gele YQ-Z-13 beating degree analyzer to measure.
(4) handsheet: it is quantitatively the 70g/m2 scraps of paper dry that the offal slurry after making beating adopts Austria's quick handshcet former of product PTI to copy.90 ℃ of baking temperatures, drying times 12 min, vacuum 0.09 MPa.The scraps of paper after 24 hours, are then surveyed its physical performance index in the lower processing of iso standard constant temperature and humidity condition (23 ± 1 ℃ of relative humidity 50 ± 2% and temperature).
(5) Continuous Flow Analysis: the offal after extraction further adopts dewaterer to carry out drying dehydration, natural air drying afterwards, clay into power with plant pulverizer, collect 40～60 object samples and carry out plant fiber material analysis, other samples that grind grind cigarette machine through Cyclotec 1093 again and clay into power, for flow analysis.Continuous Flow Analysis adopts Continuous Flow Analysis instrument AA3(SEAL AutoAnalyzer 3, SEAL Analytical Co., UK) detect.In offal, the mensuration of water-soluble sugar, total alkaloid, total nitrogen and chlorine adopts respectively YC/T 159-2002, YC/T 160-2002, YC/T 161-2002 and YC/T 162-2002 standard to measure.
Fibre analysis and SEM (SEM) are observed: adopt Kajaani FS-300 fibre analysis instrument to analyze fibre morphology; To after handsheet cutting, carry out metal spraying processing, then use SEM (Hitachi S-3700N) to observe.
Analyze and measure: all the other projects analyses are measured and all undertaken by respective country standard.
3, experimental result
(1) dipping extracts: the object that offal dipping extracts is the soluble component in extraction offal as much as possible, and these components are coated onto on thin section for tobacco paper substrate through last returning after the techniques such as evaporation and concentration; And offal after extracting is through defibrination, making beating, the operation such as manufacture paper with pulp is made thin section for tobacco paper substrate, and unless stated otherwise, other operations are with reference to common process.Table 9 is for adopting dipping method of the present invention offal to be extracted to the changes of contents of the main chemical substance in the offal of front and back.
The mutation analysis of chemical substance before and after table 9 offal dipping
| Chemical composition | Tobacco stalk raw material | Offal after extracting |
| Benzene-ol extract/% | 6.79 | 3.67 |
| Acid-insoluble lignin/% | 4.01 | 8.86 |
| Acid soluble lignin/% | 0.35 | 1.29 |
| Holocellulose/% | 36.4 | 48.8 |
| Water-soluble sugar/% | 15.8 | 10.6 |
| Total alkaloid/% | 0.63 | 0.42 |
| Chlorine/% | 2.06 | 1.03 |
| Total nitrogen/% | 1.65 | 1.46 |
| Recovery rate/% | -- | 26.7 |
Offal is through after extracting, in offal, the material of quite a few solubility is soluble in water, benzene-ol extract content has declined 3.12%, but due to offal contained (solubility) material or many after extracting, so the benzene-ol extract content after extracting is still up to 3.67%.Offal water under the condition of 60 ℃ extracts, lignin in offal and holocellulose are almost discord water generation chemical changes, the content of holocellulose and lignin ratio relative increase shared along with the stripping of other solable matter in offal, after particularly extracting, the content of holocellulose is increased to 48.8%, increased by 12.4% than tobacco stalk raw material, manufacturing paper with pulp of defibrination, making beating and the reconstituted tobacoo paper substrate of the increase of holocellulose content to follow-up offal is all very favorable.Water-soluble sugar, total alkaloid, chlorine and total nitrogen are as the important indicator in tobacco, and its content is through after extracting, and the content in offal has decline in various degree.After extracting, the recovery rate of offal is 26.7%.
(2) defibrination: the offal after dipping is extracted carries out defibrination, the process conditions of defibrination are that first paragraph adopts A dish, grinding clearance is 0.4 mm; Second segment adopts D dish, and grinding clearance is 0.2 mm.
Defibrination result is as shown in table 10.Offal is through process conditions impregnation process of the present invention, and tobacco stalk fibre water suction swollen is added the short texture of offal, and the total energy consumption of offal defibrination is lower, is 809 kWh/t slurries.Offal is through first paragraph defibrination, and the lignin in offal is softening, and makes offal dissociate into fiber, makes the further fibrillating of offal after second segment defibrination, and offal is higher through the yield after two sections of defibrinations, is 84.70%.Offal is through two sections of defibrinations, and the beating degree of gained offal slurry is 10
osR, the water filtering performance of offal slurry is very good.
Table 10 offal defibrination result
| Defibrination hop count | Beating degree/ oSR | Defibrination yield/% | Refining energy consumption/kWht Slurry -1 |
| One | 10 | 89.14 | 417 |
| Two | 10 | 84.70 | 392 |
(3) making beating is as shown in table 11 on the form impact of tobacco stalk fibre on the impact making beating of offal pulp fibres form.
Table 11 impact on offal pulp fibres form of pulling an oar
| Making beating revolution/ | 0 | 1500 | 2500 | 3500 | 4500 | 5500 | 6500 | 7500 |
| Beating degree/
o | 10 | 16 | 23 | 31 | 38 | 44 | 47 | 48 |
| Average length L w/mm | 1.62 | 0.88 | 0.77 | 0.75 | 0.74 | 0.65 | 0.48 | 0.36 |
| Fines content/% | 6.90 | 11.37 | 12.53 | 13.32 | 14.09 | 14.10 | 21.05 | 37.17 |
| Rugosity/mgm -1 | 1.370 | 1.356 | 1.256 | 1.209 | 1.077 | 0.902 | 0.883 | 0.870 |
| Fiber crimp index/% | 18.3 | 14.8 | 14.3 | 14.0 | 13.6 | 12.0 | 8.4 | 7.9 |
From table 11, along with the raising of PFI making beating revolution, the fibre length of tobacco stalk fibre declines gradually, and downward trend is very obvious.Not making beating tobacco stalk fibre length be 1.62 mm, making beating revolution be 1500 turn after, fibre length drops to 0.88 mm, this explanation tobacco stalk fibre in pulping process, be easy to be cut off.The content of fiber fines increases gradually along with the increase of making beating revolution, and the offal of making beating slurry fines content is not few, accounts for 6.90%; Making beating turns to 7500 that (beating degree is 48
osR) time, the content of fiber fines has accounted for 37.17%, and in this explanation offal slurry pulping process, fiber is constantly cut off, and has produced more many fibre debris.Initial beating-up period, the rugosity slow decreasing of tobacco stalk fibre, illustrating that making beating destroys the cell membrane of fiber, makes fiber wire-dividing broom purification, little on the rugosity impact of tobacco stalk fibre, but (beating degree is greater than 38 in the later stage of making beating
osR), fiber is cut off and obviously occurs after wire-dividing broom purification, and the rugosity of fiber declines larger.The fiber crimp index of offal is along with the raising of making beating revolution is downward trend gradually, and it is curling that main cause is that the tobacco stalk fibre grown of fibre length easily occurs, and along with fiber is cut off, fibre length declines, and the crimp index of tobacco stalk fibre declines.
(4) impact of making beating on offal slurry physical property
Offal slurry physical property is the result of adhesion between tobacco stalk fibre, fiber intrinsic strength and average fiber length combined influence.Accompanying drawing 15 is the impacts of different making beating revolutions on beating degree and tensile index.The initial beating degree of tobacco stalk fibre is 10
osR, is shown in Table 11, and illustrates that the water filtering performance of tobacco stalk fibre is relatively good after defibrination.From accompanying drawing 14, along with the increase of making beating revolution, initial beating-up period, the beating degree of tobacco stalk fibre rises very fast, making beating revolution is 5500 while turning, the beating degree of tobacco stalk fibre has reached 44
osR; Afterwards, the beating degree of tobacco stalk fibre becomes mild along with the raising of making beating revolution, and when continuation raising making beating revolution to 7500 turns, beating degree is now 48
osR is only 5500 to have increased by 4 while turning than making beating revolution
osR.
It can also be seen that from accompanying drawing 14, the tensile index of offal sheet paper base of making beating is not 13.39 Nm/g, the tensile strength index of offal sheet paper base initial beating-up period rise very fast, through PFI mill pull an oar 1500 turn after, beating degree has only increased by 6
osR, but tensile index has increased more than one times, is 27.81 Nm/g.Illustrate that making beating makes fibre cutting, fibrillating and wire-dividing broom purification, has increased the bonded area between fiber, thereby tensile strength index is increased sharply.Along with the carrying out of making beating, beating degree increases gradually, but the increase of tensile strength index is slow gradually, when beating degree is 35
owhen SR, the tensile strength index of offal sheet paper base reaches maximum, sees shown in accompanying drawing 15, and afterwards, tensile strength index presents decline phenomenon.Producing the reason of this turnover, is mainly the impact that is subject to fibrous binding force and average fiber length variation.For the tensile index of sheet paper base, initial beating-up period, major effect it be fibrous binding force.Fibrous binding force is decided by the degree of hydration of fiber at pulping process.Because the relation of making beating effect, fiber generation swollen, specific area increases, and fiber is in this diffusion into the surface change procedure, has increased the hydration of fiber, and then increased fibrous binding force.Fibrous binding force initial beating-up period increase very fast, it is the Main Factors that improves sheet paper base tensile index, tobacco stalk fibre adhesion growth later lowers gradually, the speed that shortens of contrary average fiber length relatively rises, there is this relativity, naturally made the tension stress of sheet paper base produce turning point.
Offal beating degree on the impact of burst index and tear index as shown in Figure 15.Fibre length is the key factor that affects tearability, and along with the raising of beating degree, the length of tobacco stalk fibre declines very fast, is shown in Table 11, thereby causes the tear index of offal paper substrate also comparatively fast to decline, and sees accompanying drawing 15.The principal element that affects offal paper substrate burst index has two, i.e. adhesion between fibre length and fiber, and the latter is larger on the impact of burst index than the former.Therefore, from accompanying drawing 15, offal slurry beating degree raises, and the wire-dividing broom purification of tobacco stalk fibre is well improved adhesion between the fiber of offal paper substrate, thereby causes the burst index of offal paper substrate to rise rapidly.
Accompanying drawing 16 is the impact on offal sheet paper base bulk under different beating degree conditions.The bulk of the offal of making beating slurry is the not highest, is 2.08 cm
3/ g, along with the rising of beating degree, the bulk of offal sheet paper base declines very fast, this is because making beating has destroyed the cell membrane of tobacco stalk fibre, makes fiber wire-dividing broom purification, and making beating later stage fiber shortens, wire-dividing broom purification degree increases, and has increased bonded area, thereby bulk is declined rapidly.Air permeability has very large relation to the combustibility of offal paper substrate, and therefore the air permeability of offal paper substrate is a very important technical indicator.Can find out from accompanying drawing 16, air permeability and bulk all sharply decline along with the rising of beating degree, the air permeability of the sheet paper base of making beating is not higher, be 59.58 μ m/ (Pas), illustrate that the tobacco stalk fibre of making beating is not stiff, combination while laminating paper substrate between fiber and fiber is so not tight, has a large amount of spaces between fiber and fiber, makes air be easy to pass through.Along with beating degree improves, the bulk of sheet paper base declines, and tightness rises, and air permeability declines.
(5) scanning electron microscope analysis of tobacco stalk fibre
Accompanying drawing 17～19 is the SEM figure of tobacco stalk fibre under different beating degree conditions.Wherein accompanying drawing 17,18,19 be respectively that the tobacco stalk fibre of not pulling an oar, offal making beating 1500 turns, the SEM figure of tobacco stalk fibre under the offal making beating 3500 beating degree conditions that turn.
Can find out from accompanying drawing 17, more stiff without the tobacco stalk fibre of making beating, wire-dividing broom purification is fewer, and fiber bonded area is few.And tobacco stalk fibre wire-dividing broom purification in accompanying drawing 18 is obvious, fiber fines obviously increases, between fiber in conjunction with tightr.Continue making beating and turn to 3500 that (beating degree is 31
osR), from accompanying drawing 19, find, it is very soft that tobacco stalk fibre becomes, and fiber fines is more, wire-dividing broom purification phenomenon is very obvious, and the adhesion between tobacco stalk fibre is very strong, and paper properties is better, but tightness increases, air permeability declines very fast, and this is very unfavorable to offal sheet paper base.This explanation tobacco stalk fibre is easily pulled an oar, and easily fibrillating, when tobacco stalk fibre beating degree improves, the loss of tobacco stalk fibre length is more serious, and producing more many fiber fines, so control the making beating of tobacco stalk fibre well, is the key factor of effectively controlling offal paper substrate physical property.Through constantly contrast summary and analysis, the technical scheme of optimum of the present invention is to be 10% by the offal slurry after defibrination according to beating consistency, and beater roll(er) is 0.2 mm with beating gap, chamber, and beating pressure is 3.33 N/mm, described making beating revolution is 1500～2500, and beating degree is 20～30
0the processing of pulling an oar of the condition of SR, can obtain good paper substrate quality.Can adopt PFI mill (Mark VI NO.621) or other intimate equipment that HAMJERN MASKJN A/S HAMAR NORWAY company produces to realize the technical program.
Experimental results demonstrate through the present invention, after offal dipping extracts, in offal, the content of water-soluble sugar, total alkaloid, chlorine and total nitrogen has decline in various degree, in offal, the content of holocellulose has improved 12.4% relatively, reach 48.8%, for advantage has been created in follow-up defibrination and making beating.Offal is through after two sections of defibrinations, and defibrination yield is 84.70%; The total energy consumption of defibrination is lower, is 809 kWh/t slurries.The fibre morphology analysis of offal shows, along with the rising of offal slurry beating degree, the fibre length of offal slurry declines very fast, and the increase of offal slurry fines content is very fast.The paper properties analysis of offal slurry shows, the increase of offal slurry beating degree, and the tensile index of offal paper substrate first increases rear reduction, and bulk, air permeability and tear index are on a declining curve, and burst index rises very fast.
The reconstituted tobacoo that the present embodiment paper substrate is prepared in conjunction with existing common process is applied in cigarette, carries out sensory evaluation by 7 professional members of smoking, the soft silk floss of product flue gas, exquisiteness, and flow velocity is slower, and long sense increases; Fragrance texture is clear, bright, more thoroughly send out, and harmony is better, and assorted gas is little, and flue gas moisture feeling increases, and global comfort promotes.
Three stage countercurrents of offal extract flow chart as shown in Figure 20, and offal enters defibrination workshop section after first order extraction, second level extraction and the third level are extracted.The third level extract adverse current that the third level obtains after extracting and adopting clear water to extract enters the second level and floods extraction, second level extract another mistake flows to into the first order extracts experiment, last first order extract carries out evaporation and concentration after pretreatment, finally returns and is coated onto on thin section for tobacco paper substrate.
Three stage countercurrents extract each experiment offal 200g(over dry), three stage countercurrents extract and move after 5 times, collect the offal after every one-level dipping has extracted, natural air drying, with microphyte grinder mill powdered, collect 40～60 object samples and carry out plant fiber material analysis, other samples that grind grind cigarette machine through Cyclotec 1093 again and clay into power, for flow analysis.Extract according to single hop dipping better experiment condition and the summary that experiment obtains, through production application practice analysis, determine that the process conditions of three stage countercurrents extractions are as follows: liquor ratio is 1 ﹕ 7, temperature: 80 ℃, the time: 40min; In three grades of leaching process, the process conditions of every one-level are not made and are changed.The experimental result that offal three stage countercurrents extract is as shown in table 12.As seen from Table 12, the progression extracting when offal is from the first order to the second level, and the yield of offal is from 73.39% slow decreasing to 65.11%, and offal extracts and proceeds to the third level from the second level, and the yield of offal drops to 59.78% from 65.11%.The yield of the offal first order, the second level and the third level is respectively 54.95%, 49.02% and 45.78%.Accompanying drawing 21 is for extracting the result that affects of the yield of progression on offal and recovery rate, offal first order recovery rate be 26.61% and 45.05%(be shown in Table 13), the recovery rate that three stage countercurrents extract is 40.22% and 54.22%, illustrates that three grades of extractions have higher recovery rate than one-level extraction.It can also be seen that from accompanying drawing 21, extract progression from the first order to the third level, the yield of offal is to be almost line to decline, and recovery rate is linear rising.Three stage countercurrents extract has stronger extractability than single-stage extraction.In accompanying drawing 21, curve 1 represents offal yield, song
Table 12 offal three stage countercurrents extract result
| ? | Water-soluble sugar/% | Total alkaloid/% | Chlorine/% | Total nitrogen/% | Yield/% |
| Raw material | 15.84 | 0.63 | 2.06 | 1.65 | 100 |
| The first order is extracted | 10.61 | 0.42 | 1.03 | 1.46 | 73.39 |
| Extract the second level | 8.09 | 0.32 | 0.72 | 1.45 | 65.11 |
| The third level is extracted | 6.44 | 0.25 | 0.49 | 1.42 | 59.78 |
In tobacco stalk raw material, the content of water-soluble sugar, total alkaloid, chlorine and total nitrogen is respectively 15.84%, 0.63%, 2.06% and 1.65%(be shown in Table 12).In the first order is extracted, the content of water-soluble sugar drops to 10.61% from 15.84%, and the extraction rate reached of water-soluble sugar has arrived 33.02%(and is shown in Table 13).In offal, the content of total alkaloid is lower, but in the first order is extracted, the recovery rate of total alkaloid has also reached 33.33%(and has been shown in Table 13).The chlorine of offal and the recovery rate of total nitrogen are respectively 50% and 11.52%, extract the inside in the first order, and the recovery rate of offal chlorine is the highest, and the recovery rate of total nitrogen is minimum.Offal is in extract the second level, and the content of water-soluble sugar, total alkaloid, chlorine is respectively 8.09%, 0.32% and 0.72%, and corresponding recovery rate rises to 48.93%, 49.21% and 65.05%.But in extract the second level, in offal, the content of total nitrogen is 1.45%, relatively the first order is extracted, and changes very littlely, illustrates that it is more difficult from offal, extracting total nitrogen.
Table 13 offal recovery rates at different levels
| ? | Water-soluble sugar/% | Total alkaloid/% | Chlorine/% | Total nitrogen/% | Total recovery rate/% |
| The first order is extracted | 33.02 | 33.33 | 50.00 | 11.52 | 26.61 |
| Extract the second level | 48.93 | 49.21 | 65.05 | 12.12 | 34.89 |
| The third level is extracted | 59.34 | 60.32 | 76.21 | 13.94 | 40.22 |
In three grades of leaching process, in offal, the changes of contents of total nitrogen is smaller, illustrates that the nitrogen compound in offal, particularly protein are more difficult to remove from offal.Accompanying drawing 22 is that the recovery rate of water-soluble sugar in offal, total alkaloid, chlorine and total nitrogen is with the variation diagram of extraction progression.In accompanying drawing 22, curve 1 represents offal water-soluble sugar, and curve 2 represents offal total alkaloid, and curve 3 represents offal chlorine, and curve 4 represents offal total nitrogen, and curve 5 represents offal water-soluble sugar, and curve 6 represents offal total alkaloid, curve
7 represent offal chlorine, and curve 8 represents offal total nitrogen.From accompanying drawing 22, in the middle of four detected class chemical substances, under experiment condition, in three stage countercurrent leaching process, the water-soluble sugar of offal and total alkaloid have identical recovery rate.From recovery rate aspect, three stage countercurrents extract and show more intense extractability, and are conducive to increase the content of water-soluble sugar in extract, total alkaloid, chlorine and total nitrogen, and this is favourable to the follow-up evaporation and concentration of extract.Extract in the process of offal at three stage countercurrents, in offal, the changes of contents of acid-insoluble lignin, holocellulose, benzene-ol extract is as shown in table 14.From table 14, in tobacco stalk raw material, lignin, holocellulose content are respectively 4.01%, 4.80% and 29.39%, 36.42%, and in offal, lignin content and holocellulose content are larger.After extracting through the first order, due to a large amount of strippings of soluble component in offal, and the stripping of lignin and holocellulose is less, cause the content of lignin and holocellulose in offal greatly to improve, in tobacco stalk raw material, lignin, holocellulose content are 50.76%, 48.77%, offal is respectively 26.61% at the recovery rate of the first order, extracts from the first order to the third level, and in offal, lignin content slightly declines along with extracting the increase of progression; The temperature that three stage countercurrents extract is 80 ℃, (pH value is about 4.8～7.2) carried out in extraction under solutions of weak acidity, with this understanding offal is carried out to three stage countercurrent extractions, in offal, the lignin of some is along with extract stripping, and lignin as acid-soluble in low-molecular-weight and holocellulose are hydrolyzed under solutions of weak acidity can stripping.Along with extracting the increase of progression and the increase of recovery rate, extract third level extraction from the first order, in offal, the content of holocellulose is ever-increasing, has arrived the third level, and both content is 56.21%, and the stripping that holocellulose is described is less comparatively speaking.In tobacco stalk raw material, the content of benzene-ol extract is that 6.79%(is shown in Table 14), the content of organic solvent extract is larger, increases when extracting progression, and along with the stripping of soluble component in offal, in offal, the content of benzene-ol extract reduces gradually.After the third level is extracted, in offal, the content of benzene-ol extract is 2.63%, reduces 4.16% than the benzene-ol extract in raw material, illustrates that the stripping of the soluble component of organic solvent in offal is fewer.
Table 14 extracts the impact of progression on lignin, holocellulose and benzene-ol extract
The reconstituted tobacoo that the present embodiment paper substrate is prepared in conjunction with existing common process is applied in cigarette, carries out sensory evaluation by 7 professional members of smoking, the soft silk floss of product flue gas, exquisiteness, and flow velocity is slower, and long sense obviously increases; Fragrance texture is clear, bright, thoroughly send out, and harmony is good, and mint type note feature is more obvious; Assorted gas is little, and flue gas moisture feeling significantly increases, and oral cavity is clean, and global comfort obviously promotes.
Claims (6)
1. a preparation method for offal reconstituted tobacco paper substrate processed, adopts paper process to prepare take offal as raw material, it is characterized in that comprising the following steps:
(1) impregnation process of offal;
Described offal adopts single hop dipping to extract, and dipping extraction conditions is: solid-liquid ratio 1:7, and dipping temperature is 60 ℃, dip time is 100 minutes; Or the dipping of described offal adopts three stage countercurrent extraction processes, offal enters subsequent step after first order extraction, second level extraction and the third level are extracted; The third level is extracted and adopts clear water to extract, the third level extract adverse current obtaining enters the second level and floods extraction, second level extract another mistake flows to into the first order to be extracted, last first order extract carries out evaporation and concentration and obtains coating fluid after pretreatment, is coated onto on thin section for tobacco paper substrate in order to last returning; Offal after three stage countercurrents extract enters next step for defibrination; Described three stage countercurrent extraction conditions are that liquor ratio is 1 ﹕ 7, temperature: 80 ℃, and time: 40min, in three grades of leaching process, the process conditions of every one-level do not change;
(2) the offal defibrination processing after step (1) impregnation process; Described defibrination adopts two sections of refining process, comprises first paragraph defibrination and second segment defibrination, and refining concentration is all 20%; First paragraph grinding clearance is 0.4mm; The second grinding clearance is 0.2mm;
The mill parameter of described first paragraph defibrination is:
The mill parameter of described second segment defibrination is:
(3) offal obtaining through step (2) defibrination is starched the processing of pulling an oar; The beating consistency of described making beating is 10%, and beater roll(er) is 0.2 mm with beating gap, chamber, and beating pressure is 3.33 N/mm; Making beating revolution is 1500～2500, and beating degree is 20～30
0sR;
(4) handsheet and be drying to obtain described offal reconstituted tobacco paper substrate processed.
2. the preparation method of offal reconstituted tobacco paper substrate processed according to claim 1, is characterized in that step (2) also comprises the 3rd section of defibrination, and refining concentration is 20%, and grinding clearance is 0.15mm, adopts the mill parameter of second segment defibrination described in claim 1.
3. according to the preparation method of the reconstituted tobacco paper substrate processed of offal described in claim 1 or 2, it is characterized in that the KRK-2500 II high-density paste mill that the described defibrination of step (2) adopts Japanese KRK company to produce carries out defibrination operation, first paragraph defibrination preferably adopts A dish, and grinding clearance is 0.4mm; The second defibrination adopts D dish, and grinding clearance is 0.2mm.
4. the preparation method of offal reconstituted tobacco paper substrate processed according to claim 1, is characterized in that the described making beating revolution of step (3) is 2500, and beating degree is 23
0sR.
5. the preparation method of offal reconstituted tobacco paper substrate processed according to claim 1, is characterized in that copying of the described handsheet of step (4) is quantitatively 70g/ m
2.
6. the offal reconstituted tobacco paper substrate processed that described in claim 1,2,4 or 5, preparation method prepares.
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| CN103892439B (en) * | 2014-04-17 | 2017-03-15 | 浙江中烟工业有限责任公司 | A kind of unqualified method for producing reconstituted tobacco of below 1mm Nicotiana tabacum Lves and application |
| MX2016016521A (en) | 2014-06-24 | 2017-05-01 | Philip Morris Products Sa | Reconstituted tobacco sheets and related methods. |
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