CN101942775A - Medium and high-concentration pulp ozone bleaching device - Google Patents
Medium and high-concentration pulp ozone bleaching device Download PDFInfo
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- CN101942775A CN101942775A CN 201010277209 CN201010277209A CN101942775A CN 101942775 A CN101942775 A CN 101942775A CN 201010277209 CN201010277209 CN 201010277209 CN 201010277209 A CN201010277209 A CN 201010277209A CN 101942775 A CN101942775 A CN 101942775A
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- ozone bleaching
- bleaching
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Abstract
The invention provides a medium and high-concentration pulp ozone bleaching device, which comprises a cylinder (1), a support frame (4) for supporting the cylinder (1) and a driving device for driving the cylinder (1) to rotate, wherein a plurality of racks (15) are arranged inside the cylinder (1); one end of the cylinder (1) is provided with a feeding pipe (10) and an air inlet pipe (11), while the other end is provided with a fixed discharge end (2); and the bottom of the fixed discharge end (2) is provided with a discharge hole (4). The device ensures full contact and mixing of pulp and bleaching gas, and greatly improves the uniformity of solid-gas phase bleaching reaction in the high-concentration pulp bleaching process; and compared with a conventional stirrer, the device with the design has lower energy consumption and more convenient equipment maintenance and cleaning.
Description
Technical field
The invention belongs to machine-building and light industry technical field, relate to a kind of middle and high thickened pulp ozone bleaching device.
Background technology
The a large amount of organic chlorides of content in the conventional chlorine bleach waste water are difficult for degraded, and have biological accumulation, and carcinogenic causes birth defect, and multiple cranial nerve pathology and utmost point toxicity also have certain influence not only to biological being harmful to such as fish, and to health.Therefore, pulp and paper industry needs the discharge capacity of strict control organic chloride.
The effective ways that reduce the discharge capacity of organic chloride are to adopt ECF or TCF bleaching.Ozone bleaching is as a kind of important bleaching technology in the bleaching of TCF in recent years, can remove lignin effectively and improve the whiteness of paper pulp, and can eliminate the pollution of organic chloride up hill and dale, and its development to the paper industry chlorine-free bleaching is significant.But the ozone solution degree is very little, and the water layer of fiber surface has hindered the diffusion of ozone to fibrous inside during the bleaching low-consistency stock, makes that ozone is difficult to touch fiber in a large number, causes bleaching efficiency low.
For improving the utilization rate and the FU volume production capacity of ozone, save bleaching clear water consumption, reduce the middle-stage wastewater discharge capacity, in recent years ozone bleaching towards in dense (10%～20%) and the especially high dense direction of high dense (more than 30%) paper pulp develop, at this moment, main bleaching action belongs to solid-gas-phase reaction, and the uniformity of bleaching is most important.Therefore, it is the key technology of finishing ozone bleaching that employing has the bleaching equipment that efficiently mixes function, but the structure of agitator is set in the middle of at present the ozone production equipment of exploitation or laboratory equipment adopt substantially, the type equipment exist more mix inhomogeneous, energy consumption is big, mixing arm is fragile, complex structure is difficult for shortcomings such as clean and maintenance.
Summary of the invention
Technical problem to be solved by this invention provides a kind of middle and high thickened pulp ozone bleaching device, and energy consumption is low, and is simple in structure, and easy cleaning is safeguarded.
For achieving the above object, the invention provides a kind of middle and high thickened pulp ozone bleaching device, comprise the bracing frame of cylinder, support cylinder body, and the drive unit that drives the cylinder running, described cylinder inside is provided with some tooth bars; Described cylinder one end is provided with feed pipe and air inlet pipe, and the other end is provided with fixedly discharge end, and fixedly the discharge end bottom is provided with discharging opening.
As the preferred embodiments of the present invention, described tooth bar is uniformly distributed in the inwall of cylinder circumference;
As the preferred embodiments of the present invention, described cylinder is horizontal by the angle of 1～15 degree;
As the preferred embodiments of the present invention, the top of described cylinder and fixedly the discharge end position adjacent be provided with dilution water pipe and escape pipe;
As the preferred embodiments of the present invention, described cylinder is fixed on the bracing frame by sealed bearing;
As the preferred embodiments of the present invention, the position of described discharging opening is lower than the bottom surface of cylinder;
As the preferred embodiments of the present invention, the driving gear that described drive unit comprises motor, links to each other with motor by reductor, and with the driven gear of driving gear engagement.
The middle and high thickened pulp ozone bleaching of the present invention device compared with prior art, at least have the following advantages: the present invention has abandoned the mentality of designing that agitator is set in the conventional high density bleaching equipment, has adopted the cylindrical shell rotation and in its inboard stationary rack has been set and assisted to finish the design that high consistency stock mixes with gas.Along with cylinder slowly rotates, tooth bar stirs slurry, and takes up the part slurry and rotate together, to the free landing of higher position slurry, impacts and stirs the bottom slurry; In the whole process, what guaranteed high consistency stock and bleaching gas fully contacts mixings, has improved greatly in the high consistency pulp bleaching process and has consolidated-the gas bleaching reaction uniformity; And the relative conventional whisk energy consumption of this design is lower, and maintenance of equipment and cleaning are more convenient.
Description of drawings
Fig. 1 is the structural representation of the middle and high thickened pulp ozone bleaching of the present invention device;
Fig. 2 is along the cutaway view of A-A line among Fig. 1.
The corresponding relation of number in the figure and element is as follows:
The oval cylindrical shell 2---of 1---is discharge end 3---sealed bearing 4---bracing frame 5---driven gear fixedly
6---driving gear 7---decelerator 8---motor 9---spindle nose 10---feed pipe 11---air inlet pipe
12---dilution water pipe 13---blast pipe 14---discharging opening 15---tooth bar.
The specific embodiment
Below in conjunction with accompanying drawing, the middle and high thickened pulp ozone bleaching of the present invention device is described in detail:
The middle and high thickened pulp ozone bleaching of the present invention device comprises the bracing frame 4 of cylinder 1, support cylinder body 1, and drive unit.
The bus of described cylinder 1 is horizontal by 3～15 ° angle, and the circumference that is parallel to bus in cylinder 1 inboard is welded with some tooth bars 15; Left end and right-hand member at cylinder 1 are separately installed with sealed bearing 3, and by sealed bearing 3, cylinder 1 is fixedly mounted on the bracing frame 4; Spindle nose 9 places of cylinder 1 left end are provided with feed pipe 10 along generatrix direction, with the feed pipe 10 adjacent air inlet pipe 11 that are provided with, and the right-hand member of cylinder 1 and feed pipe 10 relative be provided with fixedly discharge end 2, be provided with discharging opening 14 in the fixing lower end of discharge end 2, at cylinder 1 right-hand member and the top that fixedly discharge end 2 is adjacent be provided with dilution water pipe 12 and blast pipe 13.
Drive unit comprises driven gear 5, driving gear 6, reductor 7, and motor 8, described driving gear 6 is connected with motor 8 by reductor 7, and driving gear 6 is meshing with each other with driven gear 5, so, drive unit drives cylinder 1 running by driving gear 6 and driven gear 5 under the drive of motor 8.
During work, slurry and bleaching gas enter into cylinder 1 inside from the feed pipe 10 and the air inlet pipe 11 of cylinder 1 left end respectively, under the drive of motor 8, cylinder 1 rotates, so, slurry is along with cylinder 1 turns round together, because cylinder 1 inside is provided with 15, therefore, in the process of slurry running, tooth bar 15 stirs slurry, and the drive slurry turns round together, along with the running of cylinder 1, slurry moves towards a lower end gradually from cylinder 1 a higher end, finally enters fixedly discharge end 2, at fixing discharge end 2, after the dilution water dilution of slurry through coming in from dilution water pipe 12, from discharging opening 14 outflows of bottom, residual gas is overflowed from the discharge pipe 13 at top.
The above only is one embodiment of the present invention, it or not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading specification of the present invention is claim of the present invention and contains.
Claims (7)
1. middle and high thickened pulp ozone bleaching device is characterized in that: comprise the bracing frame (4) of cylinder (1), support cylinder body (1), and the drive unit that drives cylinder (1) running, described cylinder (1) inside is provided with some tooth bars (15); Described cylinder (1) one end is provided with feed pipe (10) and air inlet pipe (11), and the other end is provided with fixedly discharge end (2), and fixedly discharge end (2) bottom is provided with discharging opening (14).
2. middle and high thickened pulp ozone bleaching device as claimed in claim 1, it is characterized in that: described tooth bar (15) is uniformly distributed in the circumferential inner wall of cylinder (1).
3. middle and high thickened pulp ozone bleaching device as claimed in claim 1 or 2 is characterized in that: described cylinder (1) is horizontal by the angle of 1～15 degree.
4. middle and high thickened pulp ozone bleaching device as claimed in claim 1 is characterized in that: the top of described cylinder (1) and fixedly discharge end (2) position adjacent be provided with dilution water pipe (12) and escape pipe (13).
5. middle and high thickened pulp ozone bleaching device as claimed in claim 1, it is characterized in that: described cylinder (1) is fixed on the bracing frame (4) by sealed bearing.
6. middle and high thickened pulp ozone bleaching device as claimed in claim 1 is characterized in that: the position of described discharging opening (14) is lower than the bottom surface of cylinder (1).
7. middle and high thickened pulp ozone bleaching device as claimed in claim 1 is characterized in that: the driving gear (6) that described drive unit comprises motor (8), links to each other with motor by reductor (7), and the driven gear (5) that meshes with driving gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102772094A CN101942775B (en) | 2010-09-09 | 2010-09-09 | Medium and high-concentration pulp ozone bleaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102772094A CN101942775B (en) | 2010-09-09 | 2010-09-09 | Medium and high-concentration pulp ozone bleaching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101942775A true CN101942775A (en) | 2011-01-12 |
| CN101942775B CN101942775B (en) | 2012-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102772094A Expired - Fee Related CN101942775B (en) | 2010-09-09 | 2010-09-09 | Medium and high-concentration pulp ozone bleaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101942775B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078006A (en) * | 1990-10-26 | 1993-11-03 | 友联坎普专利控股有限公司 | Pulp bleaching reactor and method thereof |
| US6077396A (en) * | 1997-05-16 | 2000-06-20 | Lariviere; Christopher J. | Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent |
-
2010
- 2010-09-09 CN CN2010102772094A patent/CN101942775B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078006A (en) * | 1990-10-26 | 1993-11-03 | 友联坎普专利控股有限公司 | Pulp bleaching reactor and method thereof |
| US6077396A (en) * | 1997-05-16 | 2000-06-20 | Lariviere; Christopher J. | Apparatus for fluffing and contacting high consistancy wood pulp with a gaseous bleaching reagent |
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| Publication number | Publication date |
|---|---|
| CN101942775B (en) | 2012-05-23 |
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Granted publication date: 20120523 Termination date: 20140909 |
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