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
  • D21C1/00—Pretreatment of the finely-divided materials before digesting
• • 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
  • D21C3/00—Pulping cellulose-containing materials
  • D21C3/22—Other features of pulping processes
  • D21C3/26—Multistage processes

Definitions

• the invention relates to a pulp and paper industry, and in particular to a unified creative concept for a method for producing a fibrous prefabricated material from cellulose-containing materials and a line for its implementation.
• the proposed method and line for its implementation can be used in the pulp and paper industry, namely for the production of fibrous semi-finished products from cellulose-containing materials. Subsequently, the fibrous semi-finished product obtained in this way on the proposed line can be used for the production of paper and other products that contain cellulose.
• FIXED SHEET (RULE 91) the issue of reducing the cost of thermal energy, electricity, chemicals and, accordingly, reducing the cost of the target product.
• a method of producing a fibrous semi-finished product from cellulose-containing material for use as raw materials for the production of paper, cardboard or wood-fiber boards which provides for loading into the processing line of raw materials for its further processing, transportation of the cooking solution, saturation of the feedstock with cooking solution, and other technological operations for obtaining a semi-finished product (Patent of the Russian Federation for the invention N ° 2099456, microliter D21C 9/18, D21C 3/00, D21C 5/02 publ. 12/20/1997 [3]).
• This method allows to a certain extent to increase the efficiency of the process, but it involves the use of a complex stepwise system of increasing pressure and does not allow to avoid the process of mechanical extraction and dehydration of saturated raw materials and to replace mechanical extraction and dehydration with more efficient processes.
• This method also does not allow to achieve during the production process to reduce the cost of energy, electricity, chemicals and, as a result, significantly reduce the cost of the target product.
• a known method for the production of fibrous prefabricated material from cellulose-containing material, which is used at the Hungarian plant (Danube) is the cooking of cellulose-containing material in the form of straw to obtain a fibrous prefabricated material.
• This method involves loading the feedstock into the production line for further processing, saturating the feedstock with a cooking solution, separating the excess (secondary) solution from the saturated feedstock, dewatering, cooking saturated feedstock, unloading the cooked feedstock (Osipov P.S. Pulp and paper production technology St. Russia: Polytechnic Publishing House, 2003 [4]).
• the process takes place using the well-known Pandia-type two-pipe plant, and for dehydration, a screw saturating press is used as a dewatering element, and thus, the feedstock saturated with the cooking liquor enters the cooker in a compressed form.
• a screw saturating press is used as a dewatering element, and thus, the feedstock saturated with the cooking liquor enters the cooker in a compressed form.
• Closest to the proposed solution is a method of manufacturing a fibrous semi-finished product from cellulose-containing material, comprising loading into the processing line the feedstock for its further processing, transportation of the cooking solution to the feedstock, saturation of the feedstock with a cooking solution, separating excess cooking liquor from saturated feedstock, transferring the feedstock saturated with the cooking liquor to the cooking tank with a transport means, transporting hot masses to the cooking tank, heat treatment of the feedstock saturated with the cooking solution in the cooking tank, transporting the pulp from cooking tank.
• This method is a new development, but it is quite complicated in hardware design, expensive ; , provides for a multiple stage of mechanical extraction and dehydration of the raw materials in the process of saturation of the raw materials with a cooking solution and before the process of steaming (cooking) of this raw material.
• the implementation of this method requires significant costs of thermal energy, electricity, chemicals, and it does not allow to avoid the process of mechanical extraction and dehydration of saturated raw materials and replace the mechanical extraction processes with a more efficient process of releasing raw materials from excess cooking liquor and achieve a reduction in costs during production thermal energy, electricity, chemicals and, as a result, significantly reduce the cost of the target product.
• a device for producing a fibrous semi-finished product from cellulose-containing material for use as a raw material for the production of paper, cardboard or fiberboard, which contains structural elements for loading raw materials, saturating the raw materials with cooking liquor, for heat treatment of raw materials, transportation of technological environments Patent of the Russian Federation for the invention JNb 2099456, microliter D21C 9/18, D21C 3 / 0O 5 D21C 5/02, publ. 12/20/1997 [3]).
• This solution allows increase the efficiency of the process, but it contains a complex stepwise system of increasing pressure and does not allow to avoid the process of mechanical extraction and dehydration of saturated raw materials and replace mechanical extraction and dehydration with more efficient processes.
• This method also does not allow to achieve in the production process to reduce the cost of thermal energy, electricity, chemicals and, as a result, significantly reduce the cost of the target product.
• This scheme contains a hopper for loading raw materials, a cooking tank, a conveyor for feeding raw materials to the cooking tank, the outlet of which is connected to the cooking tank, a reservoir for saturating the raw materials with a cooking solution, a dewatering unit, a primary cooking solution tank, a secondary cooking solution tank, a pipeline for supplying the primary cooking solution , a pump for supplying a primary cooking solution, a pipeline for supplying a secondary cooking solution, a pump for supplying a secondary cooking solution, pipelines for feeding mountains cell mass to the cooking tank, the unloading device of the cooking tank, the reservoir of the obtained fibrous prefabricated.
• Such installations include installations such as Kamyur, Defibrator, Impko, Escher-Wiss (Nepenin HH Cellulose technology. In 3 tons. Production of sulfite pulp. - T. 1. - M .: Forestry, 1976) [5]; Nepenin HH Cellulose Technology. In 3 tons. Production of sulfite cellulose. - T. 2. - M .: Forest industry, 1990 [6]).
• Scheme of a continuous cooking plant of type Defibrator contains a hopper for loading raw materials, a cooking tank, a conveyor for supplying raw materials to the cooking tank, the outlet of which is connected to the cooking tank, a reservoir for saturating the raw materials with a cooking solution, a dewatering unit, a primary cooking solution tank, a primary cooking solution supply pipe, a pump for supplying the primary cooking solution, pipelines for supplying hot masses to the cooking tank, unloading device of the cooking tank, the reservoir obtained oloknistogo semi.
• mechanical compression of the raw material in the screw feeder to the crust state of the raw material is provided before the cooking process, after the raw material leaves the reservoir for saturation of the raw material with the cooking solution.
• a line for the production of a semi-finished fiber product from cellulose-containing materials containing a hopper for loading raw materials, a cooking tank, a conveyor for feeding raw materials to the cooking tank, the outlet of which is connected to the cooking tank, at least one tank for saturating the raw material with the cooking solution, not less than less than one dewatering unit, a primary cooking solution tank, a secondary cooking solution tank, a primary cooking supply pipe a solution, a pump for supplying a primary cooking solution, a pipe for supplying a secondary cooking solution, a pump for supplying a secondary cooking solution, pipelines for supplying hot masses to the cooking tank, a discharge device for the cooking tank, a reservoir of the obtained fibrous semi-finished product.
• This line is illustrated as a principal technological line for the production of chemical-mechanical pulp from straw of annual grasses (Technical proposal: Letter N ° 84E - 243 dated 03/27/2008, ZAO ,, Petrozavodsk Paper-Making Machine-Building Plant ", Russian Federation, Republic of Karelia, Petrozavodsk, 65 Zaitseva St.
• the invention is based on the task of creating such a method for the production of a semi-finished fibrous product from cellulose-containing materials, which, thanks to new technological steps, their sequence, interconnection, and quantitative process parameters, would allow the process of mechanical extraction and dehydration of saturated raw materials to be avoided and mechanical extraction and dehydration to be replaced by a more efficient process of releasing raw materials from excess cooking solution and to achieve a reduction in energy, electricity, chemicals and, as a result, reduce the cost of the target product, in addition, to expand the range of technologies for the production of semi-finished products from cellulose-containing materials.
• the basis of the invention is also the task of creating such a line for the production of a semi-finished fibrous product from cellulose-containing materials, which would be due to the conveyor feeding the raw materials into the cooking tank, the saturation tank of the cooking solution and the dewatering unit as a single structural element of the line in the form of a conveyor - a dehydrator saturator, at the bottom which is made not less than one section with holes, and the output of which is connected to the cooking tank, the location under the section with holes p a mixed cooking liquor tank with an open top, which is both a secondary cooking liquor reservoir and an excess cooking liquor reservoir, performing a secondary cooking liquor supply pipe as a mixed cooking liquor supply pipe that is connected to a mixed cooking liquor tank, an outlet location of a mixed cooking liquor supply pipeline with the conveyor - saturator - dehydrator directed to the inlet would allow avoiding processes extraction and dehydration of saturated raw materials and replace mechanical extraction and dehydration with a more efficient process of freeing raw materials from excess cooking liquor and reduce the production costs of energy
• the method of manufacturing a fibrous semi-finished product from cellulose-containing materials involves loading the feedstock into the processing line for its further processing, transporting the cooking liquor to the feedstock, saturating the feedstock with a cooking solution, separating the excess cooking solution from saturated feedstock, moving saturated with the cooking solution raw materials into the cooking tank using means for transportation, transportation hot masses to the cooking tank, heat treatment of the raw material saturated in the cooking solution in the cooking tank, transportation of the mass of fibrous prefabricated from the cooking tank.
• New in the method is that the saturation of the feedstock with a cooking solution is carried out immediately after loading the feedstock into a transporting agent in the form of a conveyor - a saturator - dehydrator by delivering a primary cooking solution or a mixed cooking solution to the feedstock, which is loaded and located in this conveyor - saturator - dehydrator, while simultaneously with the saturation of raw materials with the help of a conveyor - desiccant - dehydrator carry out transportation of saturated The raw materials from the place of loading to the cooking tank, and the separation of excess cooking solution from saturated raw materials is carried out by transporting this saturated raw material over the section with holes located at the bottom of the conveyor - saturator - dehydrator, and during such transportation of saturated raw material over the section with holes the cooking liquor spontaneously drains from saturated raw materials into the mixed cooking liquor reservoir with open top hour located beneath this section with openings thaw, after which saturated raw materials, freed from excess cooking liquor, are transferred to a cooking tank using a conveyor, a de
• application of the proposed method is additionally characterized by the following features.
• Saturation of the feedstock, both the primary cooking solution and the mixed cooking solution is carried out for at least 5 seconds, at a temperature from I 0 C to 90 0 C.
• the heat treatment of raw materials saturated with a cooking solution is carried out in a combined tank for steaming raw materials formed by interconnected cooking tanks and a closed tank discharge device.
• Transportation of the cooking liquor to the feedstock is carried out from the mixed cooking liquor tank, which is located under the section with the holes of the conveyor-saturator-dehydrator, while the primary cooking solution, which is mixed in this tank with excess cooking liquor, is transported first to such a mixed cooking liquor tank, spontaneously flowing from a mass of saturated raw materials.
• Secondary excess cooking liquor is additionally transported to the mixed cooking solution reservoir from the secondary secondary excess cooking solution reservoir.
• the line for the production of fibrous semi-finished product from cellulose-containing materials contains a hopper for loading raw materials, a cooking tank, a conveyor for supplying raw materials to the cooking tank, the outlet of which is connected to the cooking tank, at least one saturation tank for raw materials with a cooking solution, not less than one dewatering unit, a primary cooking solution tank, a secondary cooking solution tank, a primary cooking solution supply pipe, a first supply pump of the cooking liquor, the secondary cooking liquor supply pipe, the secondary cooking liquor feeding pump, the hot mass supply pipelines to the cooking tank, the cooking tank unloading device, the obtained fibrous prefabricated tank.
• New in the line is that the feed conveyor to the cooking tank, tank saturation of raw materials with a cooking solution and a dewatering unit are made as a single structural element of the line in the form of a conveyor - a dehydrator saturator, the outlet of which is connected to the cooking tank, and at the bottom of such a conveyor - a saturator - dehydrator, at least one section with openings under which the tank is located mixed cooking liquor with an open top, which is simultaneously a reservoir of a secondary cooking liquor and a reservoir of excess cooking liquor, while the secondary cooking liquor supply duct is a mixed cooking liquor supply pipeline and connected to the mixed cooking liquor reservoir, and the output of the mixed cooking liquor supply pipeline is directed to the inlet of the conveyor - saturator - dehydrator.
• the proposed line is additionally characterized by the following features.
• the conveyor - saturator - dehydrator is made inclined so that the inlet of the conveyor - saturator - dehydrator is located lower than the outlet, which is connected to the cooking tank.
• the conveyor - saturator - dehydrator contains in its lower part from 1 to 10 sections with holes.
• the sections with the holes of the conveyor - saturator - dehydrator are made lattice.
• Sites with openings of the conveyor - saturator - dehydrator are made mesh.
• the cooking tank is in the form of a closed vertical tank containing an outlet pipe into the atmosphere.
• the cooking tank is in the form of an open vertical tank.
• the unloading device of the cooking tank is located in a closed tank that is connected to the cooking tank, and the jointly closed tank of the unloading device and the cooking tank form a single tank for steaming raw materials.
• At the bottom of the unloading device of the cooking tank at least one additional section with openings is made, under which there is an additional reservoir of secondary excess cooking solution with an open the upper part, which is tightly connected by the edges of the upper part to the bottom of the unloading device of the cooking tank, the line contains a secondary supply of excess cooking liquor and a pump for supplying a secondary excess cooking solution, and a secondary supply of secondary cooking liquor is connected to the secondary tank again - excess cooking solution and is connected to the reservoir of the mixed cooking solution.
• New features of the proposed method namely, the implementation of the saturation of the feedstock with a cooking solution immediately after loading the feedstock into the tool (line component) for transportation in the form of a conveyor - saturator - dehydrator by delivering the primary cooking solution or mixed cooking solution to the feedstock, which is loaded and is located in this conveyor - saturator dehydrator, the implementation simultaneously with the saturation of raw materials with the help of the conveyor saturator - dehydrator ivatelya saturable transport of raw materials from the place of its loading to the cooking vessel, separation of excess cooking liquor from the rich raw materials by conveying this saturated feed above the area with openings, which is located at the bottom of the conveyor - saturator - dehydrator, ensuring during this transportation of saturated raw materials over the area with openings for spontaneous draining of excess cooking liquor from saturated raw materials into the mixed cooking solution reservoir with open top located below this section with openings, the transfer of saturated raw materials freed from excess cooking liquor, using a conveyor - saturator - dehydrat
• the implementation of the saturation of the feedstock, both the primary cooking solution and the mixed cooking solution is carried out for at least 5 seconds, at a temperature of l ° C to 90 ° C.
• the excess cooking solution which naturally (spontaneously) flows into the cooking solution tank, mixed with the primary cooking solution, which is also fed into the mixed cooking solution tank, is reused repeatedly, and this reduces the cost of chemicals to saturate the raw materials.
• the proposed method for the production of fibrous semi-finished products from cellulose-containing materials allows to obtain a high-quality finished product in the manufacturing process with significant simplicity of design, without the use of complex and high-cost devices and with minimal cost of chemicals, heat and electricity.
• the presence of all the essential features of the method avoids the process of mechanical extraction and dehydration of saturated raw materials and replaces mechanical extraction and dehydration with a more efficient process of releasing raw materials from excess cooking liquor by naturally draining and draining excess cooking liquor from saturated raw materials and in production, to reduce the cost of thermal energy, electricity, reduce the consumption of chemicals and, as a result, significantly reduce the cost of the finished product, in addition - expand the range of methods for the production of fibrous semi-finished products from cellulose-containing materials.
• raw materials saturated with a cooking solution for example, crushed straw of cereal crops
• Saturate the raw material with a cooking solution allows such a new feature as the presence of a mixed cooking solution pipeline, which is connected to the mixed cooking solution tank, while the output of the mixed cooking solution supply pipe is directed to the inlet of the conveyor - saturator - dehydrator: the cooking solution is fed to the inlet of the conveyor - saturator - dehydrator and there is a process of saturation of the raw material with a cooking solution.
• the presence of all the essential features of the line, the relative position of its constituent elements and a certain relationship allow us to avoid the process of mechanical extraction and dehydration of saturated raw materials and replace mechanical extraction and dehydration with a more efficient process of releasing raw materials from excess cooking liquor by naturally draining and draining excess cooking liquor from saturated raw materials and to achieve in the production of reducing the cost of thermal energy, electricity, reducing the consumption of chemical x substances and, as a consequence, significantly reduce the cost of the finished product, in addition - to expand the range of production lines for the pulp of cellulose-containing materials.
• the conveyor - saturator - dehydrator is made inclined so that the inlet of the conveyor - saturator - dehydrator is located lower than the outlet, which is connected to the cooking tank.
• the conveyor - saturator - dehydrator contains in its lower part from 1 to 10 sections with holes.
• the sections with the holes of the conveyor - saturator - dehydrator are made lattice.
• the cooking tank is in the form of a closed vertical tank containing an outlet pipe into the atmosphere.
• the cooking tank is in the form of an open vertical tank.
• the unloading device of the cooking tank is located in a closed tank that is connected to the cooking tank, and the jointly closed tank of the unloading device and the cooking tank form a single tank for steaming raw materials.
• At the bottom of the unloading device at least one additional section with openings is made, under which there is an additional reservoir of secondary excess cooking liquor with an open top, which is tightly connected by the edges of the upper part to the bottom of the unloading device of the cooking tank, while the line contains a supply pipe for the second time - excess cooking solution and a pump for supplying a secondary excess cooking solution, and a pipe for supplying a secondary excess cooking solution is connected to an additional itelnym secondary reservoir excess cooking liquor and is connected to a reservoir mixed cooking liquor.
• Figure 1 is a diagram of the proposed line for the production of fibrous semi-finished products from cellulose-containing materials with its hardware design, also illustrating the industrial implementation of the proposed method for the production of fibrous semi-finished products from cellulose-containing materials according to Example 1 below.
• Figure 2 is a diagram the proposed line for the production of fibrous semi-finished product from cellulose-containing materials with its hardware design, also illustrating the industrial implementation of the proposed method for the production of prefabricated pulp from cellulose-containing materials according to Example 2 below (a diagram of a line for the production of fibrous prefabricated from cellulose-containing materials with an additional reservoir of excess and secondary cooking liquor is a separate example).
• the proposed method for the production of a fibrous semi-finished product from cellulose-containing materials involves loading the feedstock into the production line for its further processing, transporting the cooking liquor to the feedstock, saturating the feedstock with a cooking solution, separating the excess cooking solution from saturated raw materials, transfer of raw material saturated with the cooking solution to the cooking tank using and for transportation, transportation of hot masses to the cooking tank, heat treatment of raw materials saturated with the cooking solution in the cooking tank, transportation of the mass of fibrous prefabricated from the cooking tank.
• the saturation of the feedstock with a cooking liquor is carried out immediately after loading the feedstock in a transport means in the form of a conveyor - saturator - dehydrator 2 (Fig. 1) by delivering the primary cooking solution or mixed cooking solution to the feedstock, which is loaded and located in this conveyor - saturator - dehydrator 2.
• a transport means in the form of a conveyor - saturator - dehydrator 2 (Fig. 1) by delivering the primary cooking solution or mixed cooking solution to the feedstock, which is loaded and located in this conveyor - saturator - dehydrator 2.
• Separation of excess cooking liquor from saturated raw materials is carried out by transporting this saturated raw material over a section with holes 8, which is located at the bottom of the conveyor - saturator - dehydrator 2, and during such transportation of saturated raw material over section with holes 8 excess cooking liquor spontaneously (by gravity) flows from saturated raw materials into the tank 9 mixed under the holes with holes 8 cooking solution with an open top. After this, the saturated raw materials freed from the excess cooking solution, using a conveyor - saturator - dehydrator 2 is transferred to the cooking tank 7 for further heat treatment.
• FIG. 1 shows a diagram of a line for the production of fibrous semi-finished product from cellulose-containing materials with its hardware design for this example 1, in which positions 1-17 indicate: hopper 1 for loading the feedstock; conveyor - saturator - dehydrator 2 (a single structural unit, combining the functions of a conveyor for supplying raw materials to the cooking tank, a saturation tank for raw materials, cooking solution and a dehydrating node); output 3 of the hopper 1.
• a discharge device 16 for example, in the form of a screw conveyor.
• the output of the discharge device 16 is directed to the reservoir 17 of the obtained fibrous prefabricated.
• a mass of cellulose-containing material for example, the mass of chopped straw of cereal crops, from the warehouse is fed into the hopper 1 for loading raw materials.
• the mass of straw enters the inlet 4 of the conveyor - the saturator - dehydrator 2.
• the primary cooking solution prepared on the basis of alkaline chemicals, for example, NaOH solution, via pipeline 11 supply of the primary cooking solution, using the pump 12, is fed into the tank 9 of the mixed cooking solution.
• the primary cooking liquor is fed to the inlet 4 of the conveyor - saturator - dehydrator 2, where the loaded raw material, for example, chopped cereal straw, is saturated with the primary cooking solution.
• the loaded raw material for example, chopped cereal straw
• the conveyor - saturator - dehydrator 2 raw materials for at least 5 seconds, at a temperature of 3O 0 C, a natural spontaneous process of saturation of this raw material with the primary cooking solution occurs without special exposure to additional mechanical factors or means (devices).
• the raw material impregnated with the primary cooking solution is moved through the inner space of the conveyor - saturator - dehydrator 2 in the direction from input 4 to exit 5.
• the formed mixed cooking solution from the mixed cooking solution tank 9 through the mixed cooking solution supply pipe 13, using the mixed cooking solution supply pump 14, is fed to the input 4 of the conveyor - saturator - dehydrator 2, in which the feedstock is located, and in which the natural spontaneous process of saturation of the subsequent volume occurs the feedstock for at least 5 seconds at a temperature of 3O 0 C.
• the above-described processes of saturation of the feedstock first with a primary cooking solution, and then in the process of further technological cycle - with mixed cooking liquor and the natural discharge and outflow of excess cooking liquor are carried out continuously during the operation of the line for the production of semi-finished products from cellulose-containing materials.
• the raw material From the exit 5 of the conveyor - saturator - dehydrator 2, saturated with the primary cooking solution or mixed cooking liquor, and freed from excess cooking liquor, the raw material enters the cooking tank 7.
• the process of steaming (cooking) of the raw material saturated with the cooking liquor can occur at a temperature of 40 ° C and above, which affects the duration of steaming (cooking) and accordingly requires different pressure levels in the cooking tank 7, depending on the temperature.
• a hot mass for example, hot steam or hot air, which has a temperature of 90 ° C to 100 ° C, is supplied to the cooking tank 7, through a pipe 15. Hot mass pressure (steam, air) - standard pressure, which is necessary to ensure such temperature parameters.
• the process of steaming (cooking) of the raw material saturated with the cooking solution is carried out, that is, the saturated raw materials and air masses are heated in the cooking tank 7.
• the cooking process in the cooking tank 7 takes time from 40 to 60 minutes.
• the target product is obtained in the form of a mass of fibrous semi-finished product, which from the lower part of the cooking tank 7 enters the unloading device 16, for example, a screw conveyor, and then, using the unloading device 16, the mass of the fibrous semi-finished product enters the reservoir 17 of the obtained fibrous semi-finished product.
• Example 2 To illustrate the industrial implementation of the proposed method for this example 2 in FIG. 2 shows a diagram of a line for the production of fibrous material from cellulose-containing materials with an additional reservoir of excess and secondary cooking liquor, at which positions 1-17 are the same as in FIG. 1 for the above example I 5 and the positions 18 to 22 in FIG.
• the process according to example 2 is carried out, like the process in the above example 1, but with some of the following differences, which are described below:
• the natural spontaneous process of saturation of the feedstock with a primary cooking solution or mixed cooking solution without special exposure to additional mechanical factors while the raw materials are on the conveyor - saturating - dehydrator 2 is carried out for 180 seconds at a temperature of 2O 0 C.
• the heat treatment of raw materials rich cooking liquor is carried out in bedinennom steaming vessel raw material which is formed by interconnected digester tank 7 and a closed tank 18 in which is disposed a discharge device 16, the digester tank 7 ( Figure 2).
• an additional separation of the excess cooking liquor from the pulp of the semi-finished product is carried out by transportation this mass above the additional section 22 with holes located above the additional reservoir 19 of the secondary excess cooking liquor, which is tightly connected by the edges of the upper part to the bottom of the discharge device 16 and is located in the lower part of the discharge device 16 of the cooking tank 7, while during this transportation of the mass prefabricated fiber over the additional section 22 with holes, which is located above the additional reservoir 19 of the secondary excess cooking solution, secondary redundant cooking solution spontaneously flows down through the bore portion 22 with the pulp mass in an additional reservoir 19 through its open top.
• Transportation of the cooking liquor to the feedstock is carried out from the mixed cooking liquor tank 7, which is located under the section with openings 8 of the conveyor - saturator - dehydrator 2, while the primary cooking solution is transported to the mixed cooking liquor tank 7, which is mixed in this tank for 7 s excess cooking solution, which spontaneously drains from the mass of saturated raw materials.
• Secondary excess cooking liquor is additionally transported to the mixed cooking solution tank 7 through a pipe 20 using a pump 21 from the secondary secondary cooking solution tank 19.
• the target finished product in the form of a fibrous semi-finished product from cellulose-containing materials can be further used for the production of paper, egg trays, pressed boards, household containers (for example, containers for growing plants) and for other products.
• the target product in the form of a fibrous prefabricated material from cellulose-containing materials can be further implemented in the form of, for example, extruded formations for use in the manufacture of products that contain cellulose.
• Table 1 shows the parameters of saturation of raw materials with a cooking solution and steaming of saturated raw materials during the process of implementing the proposed method in comparison with analogues and with the prototype. Table 1
• Fig. L is a diagram of a line for the production of fibrous prefabricated material from cellulose-containing materials.
• FIG. 2 is a diagram of a line for the production of a semi-finished fibrous product from cellulose-containing materials with an additional reservoir of excess and secondary cooking liquor (a separate embodiment).
• the proposed line for the production of fibrous semi-finished product from cellulose-containing materials contains a hopper 1 for loading the feedstock.
• the conveyor feeding the raw materials into the cooking tank, the saturation tank of the raw material with the cooking solution and the dewatering unit are made as a single structural element of the line in the form of a conveyor - a saturator - a dehydrator 2.
• Output 3 of the hopper 1 for loading raw materials is directed to the input 4 of the conveyor - saturator - dehydrator 2.
• Output 5 of the conveyor - saturator - dehydrator 2 is connected to the inlet 6 of the cooking tank 7.
• a section of holes 8 In the lower part of the conveyor - saturator - dehydrator 2, that is, at its bottom, in front of the inlet m 6 of the cooking tank 7 is located a section of holes 8, while the holes of this section in some cases of the invention may be lattice or mesh, or have any other shape, which are additional features of the claims.
• the mixed cooking solution tank 9 has an open upper part - it is this upper part of the tank 9 that is located under the openings section 8 of the conveyor - saturator - dehydrator 2.
• the openings in section 8 are designed for the selection and spontaneous natural discharge of excess cooking solution from saturated raw materials that are in the conveyor - a saturator - dehydrator 2, into the tank 9 of the mixed cooking solution.
• the proposed line for the production of fibrous semi-finished products from cellulose-containing materials contains a primary cooking solution tank 10.
• the primary cooking liquor reservoir 10 is connected to the mixed cooking liquor reservoir 9 by a primary AND cooking liquor supply pipe, and the primary cooking liquor is supplied in a standard manner using the primary cooking liquor pump 12, which is connected to the primary cooking liquor pipe And.
• a pipe is connected to the mixed cooking solution tank 9
• the conveyor - saturator - dehydrator 2 is made inclined, that is, the input 4 of the conveyor - saturator - dehydrator 2 is located lower than the outlet 5, which is connected to the cooking tank 7.
• the conveyor - saturator - dehydrator 2 contains from 1 to 10 sections of holes 8, which can be made lattice or mesh, or another shape. The number of portions of the holes 8 depends on the length of the conveyor - saturator - dehydrator 2, that is, on the necessary technological capacity of the line for the production of fibrous semi-finished product from cellulose-containing materials.
• the cooking tank 7 may have a vertical shape and can be either closed or open type. If the cooking tank 7 is closed, in order to maintain normal pressure in the cooking tank 7 and in order to comply with safety conditions, this cooking tank contains an exhaust pipe into the atmosphere.
• Pipes 15 for supplying hot masses, for example, steam, are connected to the cooking tank 7.
• unloading device 16 for example, in the form of a screw conveyor.
• the output of the discharge device 16 is directed to the reservoir 17 of the obtained fibrous prefabricated.
• the implementation of the line (figure 2) the discharge device 16 of the cooking tank 7 is located in a closed tank 18, which is connected to the cooking tank 7, and together the closed tank 18 and the cooking tank 7 form a single tank for steaming.
• the line includes a pipe 20 for supplying the secondary excess cooking solution and a pump 21 for supplying the secondary excess cooking solution, as well as a pipeline 20 supply secondary excess cooking solution connected to an additional reservoir 19 secondary excess cooking solution and connected to the tank 9 mixed cooking solution ora.
• a mass of cellulose-containing material for example, the mass of chopped straw of cereal crops, from the warehouse is fed into the hopper 1 for loading raw materials.
• the mass of straw enters the inlet 4 of the conveyor - saturator - dehydrator 2.
• the primary cooking solution prepared on the basis of alkaline chemicals, for example, NaOH solution 5 through pipeline 11 supply of the primary cooking solution, using the pump 12, is fed into the tank 9 of the mixed cooking solution.
• the primary cooking liquor is fed to the input 4 of the conveyor - saturator - dehydrator 2, where the loaded raw material, for example, the mass of chopped cereal straw, is saturated with the primary cooking solution.
• the raw material impregnated with the primary cooking solution is moved through the inner space of the conveyor - saturator - dehydrator 2 in the direction from input 4 to exit 5.
• the raw material saturated and saturated with the primary cooking solution in the form of the mass of chopped cereal straw along the conveyor - saturator - dehydrator 2 above the portion of the holes 8, which are located at the bottom of the conveyor - saturator - dehydrator 2 there is a natural, spontaneous discharge and outflow of the cooking solution, which is not in the raw material, that is, the drain and outflow of the excess (secondary) cooking solution, is absorbed: such a discharge, the outflow of the excess (secondary) solution is carried out without any technical and / or technological factors, for example, pressure.
• the formed mixed cooking solution from the mixed cooking solution tank 9 through the mixed cooking solution supply pipe 13, using the mixed cooking solution supply pump 14, is fed to the input 4 of the conveyor - saturator - dehydrator 2, in which the feedstock is located, and in which a natural spontaneous process of impregnation and saturation of the subsequent volume of the feedstock occurs.
• the above-described processes of impregnation and saturation of raw materials first with a primary cooking solution, and then with a mixed cooking solution and the natural drainage and outflow of excess cooking solution occur constantly during the operation of the line for the production of semi-finished products from cellulose-containing materials.
• the raw material From the exit 5 of the conveyor - saturator - dehydrator 2, saturated with the primary cooking solution or mixed cooking liquor, and freed from excess cooking liquor, the raw material enters the cooking tank 7.
• the process of steaming (cooking) of the raw material saturated with the cooking liquor can occur at a temperature of 40 ° C and above, which affects the duration of steaming (cooking) and accordingly requires different pressure levels in the cooking tank 7, depending on the temperature.
• a hot mass for example, hot steam or hot air, which has a temperature of 9O 0 C to 100 0 C, is supplied to the cooking tank 7, through a pipe 15.
• the pressure of the hot mass (steam, air) is the standard pressure that is necessary for providing such temperature parameters.
• the process of steaming (cooking) of the raw material saturated with the cooking solution is carried out: the saturated raw materials and air masses are heated in the cooking tank 7.
• the cooking process in the cooking tank takes time from 40 to 60 minutes.
• the target product is obtained in the form of a mass of fibrous semi-finished product, which from the lower part of the cooking tank 7 enters the unloading device 16, for example, a screw conveyor, and then, using the unloading device 16, the mass of the fibrous semi-finished product enters the reservoir 17 of the obtained fibrous semi-finished product.
• the implementation (execution) of the proposed invention (figure 2) steamed raw materials while moving through the unloading device 16 of the cooking tank 7 moves over not less than one, section 22 with holes, which is made in the bottom of the unloading device 16 of the cooking tank 7.
• a natural, spontaneous discharge and outflow of the cooking solution is carried out, which did not incorporate the steamed raw material, that is, the discharge and outflow is secondary from ytochnogo cooking liquor: a drain and a second outflow-excess cooking liquor is carried out without special effects any technical and / or technological factors yli means, e.g., pressure.
• Spontaneous discharge of the secondary excess cooking liquor occurs in an additional reservoir 19 of the secondary excess cooking liquor, which has an open upper part and which is tightly connected by the edges of the upper part to the bottom of the discharge device 16 of the cooking tank 7 just under the additional section 22 with holes.
• the resulting secondary excess cooking liquor using the secondary excess cooking liquor supply pipe 20, which combines the secondary secondary cooking liquor tank 19 and the mixed cooking liquor tank 9, and using the pump 21 for supplying the secondary excess cooking liquor, is transported from additional reservoir 19 of the secondary excess cooking liquor into the reservoir 9 of the mixed cooking liquor.
• a mixed cooking solution is prepared from the primary cooking solution and from secondary excess cooking solutions, which are obtained by spontaneous discharge after saturation of the raw materials during transportation to the cooking tank 7 and by draining after steaming the raw materials during transportation from the cooking tank 7.
• At the output of the line for the production of fibrous prefabricated from cellulose-containing materials receive a mass of fibrous prefabricated.
• the fiber prefabricated tank 17 can be a conventional open or closed tank or pulper, or mills for grinding highly concentrated mass, while the type of the fiber prefabricated tank 17 is not an essential sign of the invention and the fiber prefabricated tank 17 can be used in the form that is needed for the production process.
• the target finished product in the form of a fibrous semi-finished product from cellulose-containing materials can be further used for the production of paper, egg trays, pressed building boards, household containers (for example, containers for growing plants) and for other products.
• target product in the form of a fibrous prefabricated cellulose-containing materials can be further implemented in the form of, for example, extruded formations for use in the manufacture of products that contain cellulose.
• Table 2 also, as in table 1, shows the parameters of saturation of raw materials with a cooking solution and steaming of saturated raw materials during the process of implementing the proposed invention, but in comparison of the proposed line with analogs and with the prototype.
• the invention is a proposed method for the production of fibrous semi-finished product from cellulose-containing materials and the line for its implementation can be implemented in the pulp and paper industry and is widely used for its intended purpose. Examples of its specific industrial implementation, use are given above - example 1, example 2.
• the proposed method and line for its implementation were tested in a production environment.
• cereal straw was used as the primary cellulose-containing raw material
• the invention allows the use of other materials as primary cellulose-containing raw materials, for example, annual plants, cane, reeds, rice straw and other cellulose-containing materials.
• the claimed invention in actual use, it was shown that the combination of all the features of the proposed technical solution, its new features can achieve a positive effect.

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• 2008
  • 2008-10-14 UA UAA200812163A patent/UA96288C2/uk unknown
• 2009
  • 2009-10-12 CN CN200980149890.XA patent/CN102245830B/zh not_active Expired - Fee Related
  • 2009-10-12 WO PCT/UA2009/000049 patent/WO2010053464A1/ru active Application Filing
  • 2009-10-12 EA EA201100484A patent/EA201100484A1/ru unknown

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