CN108277670B - Steam explosion pulping system for salix psammophila pulping - Google Patents
Steam explosion pulping system for salix psammophila pulping Download PDFInfo
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- CN108277670B CN108277670B CN201810201647.9A CN201810201647A CN108277670B CN 108277670 B CN108277670 B CN 108277670B CN 201810201647 A CN201810201647 A CN 201810201647A CN 108277670 B CN108277670 B CN 108277670B
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- 241000112525 Salix psammophila Species 0.000 title claims abstract description 69
- 238000004880 explosion Methods 0.000 title claims abstract description 53
- 238000004537 pulping Methods 0.000 title claims abstract description 48
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 238000002791 soaking Methods 0.000 claims abstract description 19
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 17
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 81
- 238000000034 method Methods 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 241000124033 Salix Species 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/06—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods
- D21B1/061—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods using cutting devices
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/36—Explosive disintegration by sudden pressure reduction
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention relates to a steam explosion pulping system for salix psammophila pulping, which comprises: the feeding unit comprises a feeding conveyor belt; the peeling unit is erected at the discharge end of the feeding conveyor belt; the grass cutter is erected at the discharge end of the peeling unit to form cutting and sectioning of the salix psammophila with the skin removed; the soaking unit is erected at the discharge end of the grass cutter to form soaking of the cut and segmented salix psammophila; the conveying unit is erected at the discharging end of the soaking unit; the steam explosion unit is vertically erected at the discharge end of the conveying unit, the upper end is a feed inlet, the lower end is a discharge outlet, and the soaked salix psammophila is subjected to steam explosion treatment to obtain salix psammophila fibers; the yarn dividing machine is erected at the discharge end of the steam explosion unit to form yarn dividing treatment on the salix psammophila fibers; the grinder is arranged at the discharge end of the wire separator and grinds the salix psammophila fibers subjected to wire separation treatment into paper pulp; the squeezing machine is arranged at the discharge end of the grinding machine and is used for squeezing paper pulp. The pulping system can quickly and environmentally-friendly prepare the salix psammophila into paper pulp through steam explosion equipment.
Description
Technical Field
The invention belongs to the technical field of steam explosion, and particularly relates to a steam explosion pulping system for salix psammophila pulping.
Background
Paper and paperboard are carriers of human culture and information, and are also important materials in industry, agriculture, science, life and the like. The pulp and paper industry has been an important place in the global industry manufacturing industry, and the level of paper and board production and consumption has become an important indicator for the level of economic development and social progress of a country.
Modern papermaking processes can be divided into main steps of pulping, modulating, papermaking, processing and the like. Wherein, pulping is the process of separating fibers from plant fiber raw materials to obtain pulp.
In recent years, raw materials for papermaking and pulping in China are gradually in shortage, and salix psammophila is used as a pulping raw material and gradually enters the sight of people.
Salix psammophila grows rapidly, branches and leaves are dense, root systems are large, and sand fixation and soil conservation are strong; the utilization value is high; salix psammophila is one of the tree species with the largest forestation area in the sandy barren region of China. Salix psammophila can be used as paper board for papermaking. The heat and coal contained in it are almost the same, and it can be developed into green sand-coal field which is cut once every three to six years.
The salix psammophila not only firmly fixes tens of thousands of mu sand dunes which are continuously invaded and diffused, but also forms a plant belt which is formed by salix psammophila in a piece-by-piece manner, thereby conserving the moisture of the sand, cutting off the sand bag and forming a piece of green land without a few years.
For salix psammophila pulping, the following patent documents mainly exist at present:
the Chinese patent with publication number 104711881A discloses a salix psammophila bleaching chemimechanical pulp process, 1) Sha Liuqie is divided into uniform material sections, the uniform material sections are conveyed into a double-drum material washing machine to remove impurities, and the uniform material sections are conveyed into a steaming bin for full impregnation after dehydration and then conveyed into a double-screw thread rolling machine; 2) The first section of thread rolling machine is used for thread rolling and then is sent to a high-concentration reaction bin for standing; 3) Washing and dehydrating the slurry passing through the first-stage reaction bin by a first-stage pulp extruder, rubbing and separating wires in a second stage, and conveying the wires to a high-concentration reaction bin for standing; 4) Performing high-concentration pulping on the slurry after standing by a two-stage pulp extruding machine; 5) The coarse pulp after grinding is subjected to high-speed de-submerging by a hydropulper, deslagging, fine grinding, screening and concentration, and then is conveyed to a pulp blending tank to a papermaking workshop. The salix mongolica bleaching chemical mechanical pulp process provided by the patent is simple and easy to operate aiming at the characteristics of salix mongolica, does not need large complex equipment, is more friendly to the environment than the prior art, and has high performance and low cost. However, the process provided by this patent is slow in pulping speed, long in time and high in energy consumption.
Disclosure of Invention
The invention aims to provide a steam explosion pulping system for salix psammophila pulping, which solves the problem of low pulping speed of the conventional salix psammophila.
In order to achieve the purpose, the steam explosion pulping system for salix psammophila pulping provided by the invention can be used for rapidly and environmentally-friendly pulping salix psammophila through steam explosion equipment.
Specifically, the technical scheme adopted by the invention is as follows:
a steam explosion pulping system for salix psammophila pulping, the system comprising: the feeding unit comprises a feeding conveyor belt for conveying salix psammophila; the peeling unit is used for removing sand Liu Waipi and is erected at the discharge end of the feeding conveyor belt; the grass cutter is erected at the discharge end of the peeling unit to form cutting and sectioning of the salix psammophila with the skin removed; the soaking unit is erected at the discharge end of the grass cutter to form soaking of the cut and segmented salix psammophila; the conveying unit is erected at the discharging end of the soaking unit; the steam explosion unit is vertically arranged at the discharge end of the conveying unit, the upper end is a feed inlet, the lower end is a discharge outlet, and the soaked salix psammophila is subjected to steam explosion treatment to obtain salix psammophila fibers; the yarn dividing machine is arranged at the discharge end of the steam explosion unit to form yarn dividing treatment on salix psammophila fibers; the grinder is arranged at the discharge end of the wire separator and grinds the salix psammophila fibers subjected to wire separation treatment into paper pulp; and the squeezing machine is arranged at the discharge end of the grinder and is used for squeezing the paper pulp.
Further, the discharge end of the peeling unit is used for conveying the salix psammophila with the outer skin removed through a feeding pipeline, and the discharge port of the feeding pipeline corresponds to the feed inlet of the grass cutter.
Further, the peeling unit is a roller wet peeling machine for removing sand Liu Waipi by a roller wet method.
Further, the feeding pipeline is obliquely arranged, the discharge port is provided with an elbow, and the outlet of the elbow corresponds to the feed inlet of the grass cutter.
Further, the conveying unit is a belt feeder and is arranged in a slope from bottom to top, the soaking unit is a tank body which is vertically arranged, the upper end is a feeding end corresponding to a discharge hole of the grass cutter, the lower end is a discharge end, the discharging end of the soaking unit corresponds to the feeding end of the belt feeder, and the discharging end of the belt feeder corresponds to the feeding end of the steam explosion unit.
Further, the number of discharge ends of the steam explosion units is 2, and the steam explosion units are symmetrically arranged.
Further, the bottoms of the two discharging ends of the steam explosion unit are respectively used for conveying salix psammophila fibers to a storage tank through a conveying belt, and the discharging holes at the bottoms of the storage tank are used for conveying the salix psammophila fibers to the wire dividing machine through a conveying belt which is obliquely arranged from bottom to top.
Further, a plurality of grinding discs are arranged in the grinder at intervals.
The steam explosion unit comprises: the outer wall of the lower opening end of the outer bin is provided with an annular lower connecting part in a protruding mode along the outer circumference of the outer bin, at least one annular first sealing groove is formed in the position, close to the lower opening end, of the two ends of the lower surface of the annular lower connecting part along the circumference of the annular lower connecting part, an air inlet hole is formed in the side wall of one side of the outer bin, and a high-temperature high-pressure air inlet pipe is inserted into the air inlet hole to form high-temperature high-pressure air inlet; the annular cover plate is covered at the upper opening end of the outer bin and is detachably connected with the outer bin, the inner ring of the annular cover plate extends to the inner side of the upper opening end of the outer bin, and the lower surfaces of the two ends of the annular cover plate, which are positioned at the inner side of the upper opening end of the outer bin, are provided with annular second sealing grooves along the circumferential direction of the annular cover plate; the inner bin is in a shape of a tube body and is vertically placed, the upper port of the inner bin is slidably inserted into the inner side of the outer bin from the lower opening end of the outer bin, a gap is reserved between the upper port and the upper opening end of the outer bin, a containing cavity is formed, the lower port of the inner bin is positioned on the inner side of the lower opening end of the outer bin, and a gap is reserved between the side wall of the inner bin and the side wall of the outer bin; the bottom cover is arranged at the lower port of the inner bin, and the upper surface of the bottom cover is provided with a first sealing bulge matched with the first sealing groove along the circumferential direction of the bottom cover; the annular bottom plate is arranged in the accommodating cavity, the annular bottom plate is detachably covered on the upper port of the inner bin, gaps are reserved between the two ends of the annular bottom plate and the inner wall of the outer bin, a second sealing bulge matched with the second sealing groove is convexly arranged on the upper surface of the annular bottom plate along the circumferential direction of the annular bottom plate, and at least one annular third sealing groove is formed in the position, close to the inner ring, of the two ends of the lower surface of the annular bottom plate along the circumferential direction of the annular bottom plate; the inner cover is detachably covered on the lower surface of the annular bottom plate, a third sealing protrusion matched with the third sealing groove is convexly arranged on the upper surface of the inner cover along the circumferential direction of the inner cover, a sealing groove is arranged in the middle of the upper surface, and a sealing strip is embedded in the sealing groove to form sealing; at least one first sealing strip, the cross section of which is in a shape like a Chinese character 'tu', is embedded in the first sealing groove to form sealing connection between the first sealing groove and the first sealing bulge; the second sealing strip is in a convex shape in cross section and is embedded in the second sealing groove to form sealing connection between the second sealing groove and the second sealing bulge; at least one third sealing strip, the cross section shape is "protruding" font, inlays in locating in the third sealing groove, forms the sealing connection between third sealing groove and the third sealed arch.
Further, an annular upper connecting part is convexly arranged on the outer wall of the upper opening end of the outer bin along the outer circumference of the outer bin, an upper connecting hole is respectively formed at two ends of the annular upper connecting part, an upper connecting through hole corresponding to the upper connecting hole is correspondingly formed at two ends of the annular cover plate, and two fixing pieces are inserted into the upper connecting through hole and the upper connecting hole to form detachable connection between the annular cover plate and the outer bin; the inner wall of the upper port of the inner bin is convexly provided with an annular bulge along the horizontal direction, two ends of the upper surface of the annular bulge are respectively provided with an installation blind hole along the vertical direction, correspondingly, two ends of the annular bottom plate are respectively provided with an installation hole matched with the installation blind holes, and a fixing rod is inserted into the installation holes and the installation blind holes to form detachable connection between the annular bottom plate and the inner bin; the side wall of one side of the inner bin is provided with an openable door for introducing steam and discharging materials, and the air inlet hole is formed in the side wall of the outer bin corresponding to the door; one end of the lower connecting part of the outer bin is provided with a guide hole along the vertical direction, correspondingly, the bottom cover is provided with a guide through hole corresponding to the guide hole, and a guide post is inserted into the guide through hole and the guide hole to form a guide for the inner bin to slide along the outer bin; the lower surface of the inner cover is provided with an arc-shaped bulge.
The invention has the following advantages:
removing sand Liu Waipi by adopting a roller wet method;
cutting salix psammophila into sections and presoaking;
taking a steam explosion device as a core, and performing steam explosion processing on salix psammophila;
grinding salix psammophila fibers into paper pulp by adopting a grinding disc with a specific gap;
the whole production process has no raw materials which cause chemical pollution due to the addition of any chemical medicines and the like, so that the pollution to the environment is reduced;
the pretreatment such as peeling, cutting off, soaking and the like is performed in advance, so that the steam explosion processing difficulty and time are reduced, and the processing cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a steam explosion pulping system for salix psammophila pulping.
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic diagram of a part of a steam explosion unit in a steam explosion pulping system for salix psammophila pulping.
Detailed Description
The present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 3, the steam explosion pulping system for salix psammophila pulping provided by the invention comprises: the feeding unit 1 comprises a feeding conveyor belt 11 for conveying salix psammophila; the peeling unit 2 for removing sand Liu Waipi is erected at the discharge end of the feeding conveyor belt 11; the grass cutter 3 is erected at the discharge end of the peeling unit 2 to form cutting and sectioning of the salix psammophila with the skin removed; the soaking unit 4 is erected at the discharge end of the grass cutter 3 to form soaking of the cut and segmented salix psammophila; the conveying unit 5 is erected at the discharge end of the soaking unit 4; the steam explosion unit 6 is vertically arranged at the discharge end of the conveying unit 5, the upper end is a feed inlet, the lower end is a discharge outlet, and the soaked salix psammophila is subjected to steam explosion treatment to obtain salix psammophila fibers; the yarn dividing machine 7 is erected at the discharge end of the steam explosion unit 6 to form yarn dividing treatment on salix psammophila fibers; the grinder 8 is arranged at the discharge end of the wire separator 7 and grinds the salix psammophila fibers subjected to wire separation into paper pulp; and the wringing machine 9 is erected at the discharge end of the grinder 8 and is used for wringing the paper pulp.
Further, the peeling unit 2 is a drum wet peeling machine for removing sand Liu Waipi by a drum wet method.
Further, the conveying unit 5 is a belt feeder and is obliquely arranged from bottom to top, the soaking unit 4 is a tank body which is vertically arranged, the upper end is a feeding end corresponding to a discharge hole of the grass cutter 3, the lower end is a discharging end, the discharging end of the soaking unit 4 corresponds to the feeding end of the belt feeder, and the discharging end of the belt feeder corresponds to the feeding end of the steam explosion unit 6.
Further, the number of discharge ends of the steam explosion units 6 is 2, and the steam explosion units are symmetrically arranged.
Further, a plurality of grinding discs are arranged in the grinder 8 at intervals.
Further, referring to fig. 3, the steam explosion unit includes: the outer bin 1 is in a pipe body shape and is vertically placed, an annular lower connecting part 11 is convexly arranged on the outer wall of the lower opening end of the outer bin 1 along the outer circumference of the outer bin, at least one annular first sealing groove 12 is formed in the position, close to the lower opening end, of the two ends of the lower surface of the annular lower connecting part 11 along the circumference of the annular lower connecting part, an air inlet hole 13 is formed in the side wall of one side of the outer bin 1, and a high-temperature high-pressure air inlet pipe 14 is inserted into the air inlet hole 13 to form high-temperature high-pressure air inlet; the annular cover plate 2 is covered at the upper opening end of the outer bin 1 and is detachably connected with the outer bin 1, the inner ring of the annular cover plate 2 extends to the inner side of the upper opening end of the outer bin 1, and annular second sealing grooves 21 are formed in the lower surfaces of the two ends of the annular cover plate 2, which are positioned at the inner side of the upper opening end of the outer bin 1, along the circumferential direction of the annular cover plate; an inner bin 3, which is in the shape of a tube body and is vertically placed, wherein the upper port of the inner bin 3 is slidably inserted into the inner side of the outer bin 1 from the lower opening end of the outer bin 1, a gap is reserved between the upper port and the upper opening end of the outer bin 1, a containing cavity 31 is formed, the lower port of the inner bin 3 is positioned in the inner side of the lower opening end of the outer bin 1, and a gap is reserved between the side wall of the inner bin 3 and the side wall of the outer bin 1; the bottom cover 4 is arranged at the lower port of the inner bin 3 in a covering manner, and a first sealing protrusion (not shown) matched with the first sealing groove 12 is convexly arranged on the upper surface of the bottom cover 4 along the circumferential direction of the bottom cover; the annular bottom plate 5 is arranged in the accommodating cavity 31, and is detachably covered on the upper port of the inner bin 3, gaps are reserved between the two ends of the annular bottom plate and the inner wall of the outer bin 1, a second sealing protrusion (not shown) matched with the second sealing groove 21 is convexly arranged on the upper surface of the annular bottom plate 5 along the circumferential direction of the annular bottom plate, and at least one annular third sealing groove 51 is formed on the lower surface of the annular bottom plate 5 at the position, close to the inner ring, of the two ends of the lower surface of the annular bottom plate along the circumferential direction of the annular bottom plate; an inner cover 6 detachably covering the lower surface of the annular bottom plate 5, wherein a third sealing protrusion (not shown) matched with the third sealing groove 51 is convexly arranged on the upper surface of the inner cover along the circumferential direction of the inner cover, a sealing groove (not shown) is arranged in the middle of the upper surface of the inner cover, and a sealing strip 52 is embedded in the sealing groove to form a seal; at least one first sealing strip 71, the cross section of which is in a shape of a Chinese character 'tu', is embedded in the first sealing groove 12 to form a sealing connection between the first sealing groove 12 and the first sealing protrusion; the second sealing strip 72 is in a convex shape in cross section and is embedded in the second sealing groove 21 to form sealing connection between the second sealing groove 21 and the second sealing bulge; at least one third sealing strip 73, the cross section of which is in a shape of a Chinese character 'tu', is embedded in the third sealing groove 51 to form a sealing connection between the third sealing groove 51 and the third sealing protrusion.
Further, referring to fig. 3, an annular upper connecting portion 15 is convexly provided on the outer wall of the upper opening end of the outer bin 1 along the outer circumferential direction of the outer bin 1, an upper connecting hole 151 is respectively provided at two ends of the annular upper connecting portion 15, an upper connecting through hole 22 corresponding to the upper connecting hole 151 is respectively provided at two ends of the annular cover plate 2 correspondingly, and two fixing pieces 23 are inserted into the upper connecting through hole 22 and the upper connecting hole 151 to form a detachable connection between the annular cover plate 2 and the outer bin 1; the inner wall of the upper port of the inner bin 3 is provided with an annular bulge 32 in a protruding manner along the horizontal direction, two ends of the upper surface of the annular bulge 32 are respectively provided with a mounting blind hole 321 along the vertical direction, correspondingly, two ends of the annular bottom plate 5 are respectively provided with a mounting hole 521 matched with the mounting blind hole 321, and a fixing rod 53 is inserted into the mounting hole 521 and the mounting blind hole 321 to form detachable connection between the annular bottom plate 5 and the inner bin 3; the side wall of one side of the inner bin 3 is provided with an openable door 33 for introducing steam and discharging materials, and the air inlet hole 13 is arranged on the side wall of the outer bin 1 corresponding to the door 33; one end of the lower connecting part 11 of the outer bin 1 is provided with a guide hole 16 along the vertical direction, correspondingly, the bottom cover 4 is provided with a guide through hole 41 corresponding to the guide hole 16, and a guide post 8 is inserted into the guide through hole 41 and the guide hole 16 to form a guide for the sliding of the inner bin 3 along the outer bin 1; the lower surface of the inner cap 6 is provided with an arc-shaped protrusion 61.
Example 2
The discharge end of the peeling unit 2 is used for conveying the salix psammophila with the outer skin removed through a feeding pipe 21, and the discharge port of the feeding pipe 21 corresponds to the feed port of the grass cutter 3. The procedure is as in example 1.
Example 3
The feeding pipe 21 is obliquely arranged, the discharge port is provided with an elbow 22, and the outlet of the elbow 22 corresponds to the feed inlet of the grass cutter 3. The procedure is as in example 2.
Example 4
The bottoms of the two discharging ends of the steam explosion unit 6 are respectively used for conveying salix psammophila fibers to a storage tank 62 through a conveying belt 61, and the discharging holes at the bottom of the storage tank 62 are used for conveying the salix psammophila fibers to the wire separator 7 through a conveying belt 63, and the conveying belt 61 is obliquely arranged from bottom to top. The procedure is as in example 1.
While the invention has been described in detail in terms of general description and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made or some functional modules can be deleted based on the invention. Accordingly, such modifications or improvements or omissions may be made without departing from the spirit of the inventions.
Claims (9)
1. A steam explosion pulping system for salix psammophila pulping, the system comprising:
the feeding unit comprises a feeding conveyor belt for conveying salix psammophila;
the peeling unit is used for removing sand Liu Waipi and is erected at the discharge end of the feeding conveyor belt;
the grass cutter is erected at the discharge end of the peeling unit to form cutting and sectioning of the salix psammophila with the skin removed;
the soaking unit is erected at the discharge end of the grass cutter to form soaking of the cut and segmented salix psammophila;
the conveying unit is erected at the discharging end of the soaking unit;
the steam explosion unit is vertically arranged at the discharge end of the conveying unit, the upper end is a feed inlet, the lower end is a discharge outlet, and the soaked salix psammophila is subjected to steam explosion treatment to obtain salix psammophila fibers;
the yarn dividing machine is arranged at the discharge end of the steam explosion unit to form yarn dividing treatment on salix psammophila fibers;
the grinder is arranged at the discharge end of the wire separator and grinds the salix psammophila fibers subjected to wire separation treatment into paper pulp;
the squeezing machine is arranged at the discharge end of the grinder and is used for squeezing the paper pulp;
the steam explosion unit comprises:
the outer wall of the lower opening end of the outer bin is provided with an annular lower connecting part in a protruding mode along the outer circumference of the outer bin, at least one annular first sealing groove is formed in the position, close to the lower opening end, of the two ends of the lower surface of the annular lower connecting part along the circumference of the annular lower connecting part, an air inlet hole is formed in the side wall of one side of the outer bin, and a high-temperature high-pressure air inlet pipe is inserted into the air inlet hole to form high-temperature high-pressure air inlet;
the annular cover plate is covered at the upper opening end of the outer bin and is detachably connected with the outer bin, the inner ring of the annular cover plate extends to the inner side of the upper opening end of the outer bin, and the lower surfaces of the two ends of the annular cover plate, which are positioned at the inner side of the upper opening end of the outer bin, are provided with annular second sealing grooves along the circumferential direction of the annular cover plate;
the inner bin is in a shape of a tube body and is vertically placed, the upper port of the inner bin is slidably inserted into the inner side of the outer bin from the lower opening end of the outer bin, a gap is reserved between the upper port and the upper opening end of the outer bin, a containing cavity is formed, the lower port of the inner bin is positioned on the inner side of the lower opening end of the outer bin, and a gap is reserved between the side wall of the inner bin and the side wall of the outer bin;
the bottom cover is arranged at the lower port of the inner bin, and the upper surface of the bottom cover is provided with a first sealing bulge matched with the first sealing groove along the circumferential direction of the bottom cover;
the annular bottom plate is arranged in the accommodating cavity, the annular bottom plate is detachably covered on the upper port of the inner bin, gaps are reserved between the two ends of the annular bottom plate and the inner wall of the outer bin, a second sealing bulge matched with the second sealing groove is convexly arranged on the upper surface of the annular bottom plate along the circumferential direction of the annular bottom plate, and at least one annular third sealing groove is formed in the position, close to the inner ring, of the two ends of the lower surface of the annular bottom plate along the circumferential direction of the annular bottom plate;
the inner cover is detachably covered on the lower surface of the annular bottom plate, a third sealing protrusion matched with the third sealing groove is convexly arranged on the upper surface of the inner cover along the circumferential direction of the inner cover, a sealing groove is arranged in the middle of the upper surface, and a sealing strip is embedded in the sealing groove to form sealing;
at least one first sealing strip, the cross section of which is in a shape like a Chinese character 'tu', is embedded in the first sealing groove to form sealing connection between the first sealing groove and the first sealing bulge;
the second sealing strip is in a convex shape in cross section and is embedded in the second sealing groove to form sealing connection between the second sealing groove and the second sealing bulge;
at least one third sealing strip, the cross section shape is "protruding" font, inlays in locating in the third sealing groove, forms the sealing connection between third sealing groove and the third sealed arch.
2. The steam explosion pulping system for salix psammophila pulping according to claim 1, wherein the discharge end of the peeling unit is used for conveying the salix psammophila with the outer skin removed through a feeding pipeline, and the discharge opening of the feeding pipeline corresponds to the feed inlet of the grass cutter.
3. A steam explosion pulping system for salix psammophila pulping according to claim 1 or 2, wherein the peeling unit is a drum wet peeling machine for removing sand Liu Waipi by a drum wet method.
4. The steam explosion pulping system for salix psammophila pulping according to claim 2, wherein the feeding pipeline is obliquely arranged, the discharge port is provided with an elbow, and the outlet of the elbow corresponds to the feed port of the grass cutter.
5. The steam explosion pulping system for salix psammophila pulping according to claim 1, wherein the conveying unit is a belt feeder and is obliquely arranged from bottom to top, the soaking unit is a vertically arranged tank body, the upper end is a feeding end corresponding to a discharge port of the grass cutter, the lower end is a discharging end, the discharging end of the soaking unit corresponds to a feeding end of the belt feeder, and the discharging end of the belt feeder corresponds to a feeding end of the steam explosion unit.
6. The steam explosion pulping system for salix psammophila pulping according to claim 1, wherein the number of discharge ends of the steam explosion units is 2, and the steam explosion units are symmetrically arranged.
7. The steam explosion pulping system for salix psammophila pulping according to claim 6, wherein the bottoms of the two discharging ends of the steam explosion unit are respectively used for conveying salix psammophila fibers to a storage tank through a conveying belt, and the discharging holes at the bottoms of the storage tanks are used for conveying the salix psammophila fibers to the wire separator through a conveying belt which is obliquely arranged from bottom to top.
8. A steam explosion pulping system for salix psammophila pulping according to claim 1, wherein a plurality of grinding discs are arranged in the grinder at intervals.
9. The steam explosion pulping system for salix psammophila pulping according to claim 1, wherein an annular upper connecting part is convexly arranged on the outer wall of the upper opening end of the outer bin along the outer circumference of the outer bin, an upper connecting hole is respectively formed at two ends of the annular upper connecting part, an upper connecting through hole corresponding to the upper connecting hole is correspondingly formed at two ends of the annular cover plate, and two fixing pieces are inserted into the upper connecting through hole and the upper connecting hole to form detachable connection between the annular cover plate and the outer bin;
the inner wall of the upper port of the inner bin is convexly provided with an annular bulge along the horizontal direction, two ends of the upper surface of the annular bulge are respectively provided with an installation blind hole along the vertical direction, correspondingly, two ends of the annular bottom plate are respectively provided with an installation hole matched with the installation blind holes, and a fixing rod is inserted into the installation holes and the installation blind holes to form detachable connection between the annular bottom plate and the inner bin;
the side wall of one side of the inner bin is provided with an openable door for introducing steam and discharging materials, and the air inlet hole is formed in the side wall of the outer bin corresponding to the door;
one end of the lower connecting part of the outer bin is provided with a guide hole along the vertical direction, correspondingly, the bottom cover is provided with a guide through hole corresponding to the guide hole, and a guide post is inserted into the guide through hole and the guide hole to form a guide for the inner bin to slide along the outer bin;
the lower surface of the inner cover is provided with an arc-shaped bulge.
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| CN201810201647.9A CN108277670B (en) | 2018-03-12 | 2018-03-12 | Steam explosion pulping system for salix psammophila pulping |
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| CN201810201647.9A CN108277670B (en) | 2018-03-12 | 2018-03-12 | Steam explosion pulping system for salix psammophila pulping |
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| CN108277670B true CN108277670B (en) | 2024-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108317252A (en) * | 2018-03-12 | 2018-07-24 | 北京新锐得环保科技有限公司 | Upper and lower ends are all made of the steam explosion device of flat seal between storehouse inside and outside a kind of |
| CN110158342A (en) * | 2019-05-23 | 2019-08-23 | 中国制浆造纸研究院有限公司 | A kind of non-timber CFD pulping process |
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