CN1837459A - Environment-friendly complete solution-circulating pulping process flow and method - Google Patents
Environment-friendly complete solution-circulating pulping process flow and method Download PDFInfo
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- CN1837459A CN1837459A CN 200510031369 CN200510031369A CN1837459A CN 1837459 A CN1837459 A CN 1837459A CN 200510031369 CN200510031369 CN 200510031369 CN 200510031369 A CN200510031369 A CN 200510031369A CN 1837459 A CN1837459 A CN 1837459A
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Abstract
This invention discloses an environment-friendly pulping process flow of circulating all liquid, which comprises the following stes: a, processing raw material; b, boiling; c, measuring and proportioning solution; d, spurting material boiled into blowpit; e, pumping wet material into pulp presser with the pump of coarse pulp; f, pressing wet pulp into dry pulp; g, discharging waste water and black liquor into black liquor basin; h, directly pumping some black liquor into blowpit with the pump of black liquor; I, adding fibrous raw material into the residual black liquor; j, adding some Ca(OH)2 solution into black liquor and stirring for reaction; k, separating in desilter; l, pumping clear liquor into the basin of measuring and proportioning solution to use circularly. The invention is suitable for use in unbleached pulp, bleaching pulp of wood, bamboo, grass, reed and so on, producing one ton of pulp can save solution cost of RMB100. And the most important is that, all waste water is used circularly, so it well protects the environment, with little investment, quick response,extensive purposes.
Description
One, technical field: the present invention relates to a kind of technological process of slurrying, especially a kind of environment-friendly complete solution-circulating pulping process flow and method.
Two; background technology: the waste water in the pulping process; black liquor mainly is the black liquor of deviating from after slurry concentrates; the various compositions and the fiber-like solid content that wherein contain stripping in the digestion process; this part pollutant accounts for 70% of whole paper-making pollution amount; these pollutants contain certain Toxic and niff; if do not carry out recycle; directly enter the river; will pollute environment; to the people; the poultry drinking water works the mischief, and by recycle, will turn waste into wealth; not only reduce water consumption and dosage; reduce production cost, the more important thing is and protected environment, prevented contaminated wastewater.Original part slurrying technological process of production just directly enters the river in the blowing pond at spraying pot 4 places, and environment has been caused very big influence.Former paper mill, this county is exactly because waste water pollution problem is forced to stop production.Therefore invent a kind of technological process method of environment-friendly complete solution-circulating slurrying, have wide application prospect.
Three, summary of the invention: environment-friendly complete solution-circulating pulping process flow and method of the present invention mainly comprises following flow process: see Fig. 1.
The whole recycles of waste water, black liquor in the slurrying flow process of the present invention.Adopt above-mentioned part technological process, also can carry out processing and utilizing other waste water.
Operation principle of the present invention is: the particle of plant material being cut or is whittled into necessarily required length or size, send in rotary spherical digester or the steamer by means of transportation, and carry out the soup metering proportion simultaneously, the soup for preparing is entered rotary spherical digester carry out boiling with particle, after the boiling of boiling material is arrived to a certain degree, spurt again in the spraying pot or in the pond, by coarse slurry pump wet slurry is delivered in press master or the hydraulic pressure calender and to be pushed, it is standby that its dry finish carries out papermaking, black liquor enters into the black liquor pond, by the black liquor pump a part of black liquor is directly sent into spraying pot again and carry out the magma dilution, another part enters surplus black liquor pond.Above-mentioned technology claims the one-level circulation.Black liquid consistency by one-level circulation gained is bigger, and residual alkali content height is put into the surplus alkali of surplus black liquor pond absorption portion with the lower living fiber of getting ready of water content then.Concentration according to surplus black liquor adds soup Ca (OH) again
2Carry out stirring reaction, generate regeneration alkali, and, then clear liquid is utilized by being pumped into soup metering pond or bucket again by the sedimentation basin precipitate and separate, but sediment white clay recycled for multiple times again, and these a series of operations are exactly environment-friendly complete solution-circulating pulping process.
The present invention is to the slurrying of raw materials such as wood, bamboo, grass, reed, and natural color pulp and bleached pulp all are suitable for.After testing, produce one ton of slurry and can reduce 100 yuan of soup costs, the more important thing is that slurrying do not have waste water and efflux, make waste water, black liquor all obtain utilizing, environment is played a very good protection.
Four, description of drawings
Fig. 1 is the process chart of environment-friendly complete solution-circulating pulping process flow and method of the present invention.
Five, the specific embodiment
Environment-friendly complete solution-circulating pulping process flow and method of the present invention is as shown in Figure 1: 1, utilize bamboo cutter or chipping machine or chaffcutter that raw material is cut into the particle of certain-length size, be referred to as raw material processing.2, adopt boiling vessels such as rotary spherical digester or steamer to carry out boiling, 3, soup metering proportion bucket or pond carry out the soup preparation and enter the rotary spherical digester boiling.4, well-done slurry is spurted in spraying pot, pond, bucket, the storehouse.5, with coarse slurry pump the wet pulp in the spraying pot is pumped in press master or the hydraulic press.6, that wet pulp is squeezed into dry pulp is standby for press master or hydraulic pressure calender.7, the waste water black liquor enters the black liquor pond.8, with the black liquor pump a part of black liquor being sent into spraying pot dilutes in the pot or the magma in the bucket.Above-mentioned technology claims the one-level circulation.9, the black liquid consistency by one-level circulation gained is bigger, residual alkali content height, thus can put into the surplus alkali of getting ready of living fibrous raw material absorption portion.10, utilize surplus black liquor to add an amount of soup Ca (OH)
2Carry out stirring reaction.11, sedimentation basin separates.12, the clear liquid of clean solution tank utilizes with going in pump suction soup metering proportion pond or the bucket again.
The present invention only increases several ponds on original pulping process basis and small number of devices gets final product.Small investment, instant effect, and one fado use, change slurry, partly change slurry, wood, bamboo, grass, reed pulp, natural color pulp and bleached pulp all are suitable for, and can both governance for reaching standard to the waste water of others, sewage, it is useless, the sewage disposal medication is in dried loess or aluminum sulfate or the alum and stirring, post precipitation discharging or utilize again.Calorific requirement, power consumption are not less to reclaim alkali lye, so the present invention is easy to promotion and implementation.
Claims (3)
1, a kind of technological process method of environment-friendly complete solution-circulating slurrying, it is characterized in that comprising following technological process: (1) bamboo cutter or chipping machine or chaffcutter, the processing of general designation raw material, (2) rotary spherical digester or steamer or boiling vessel, the general designation boiling, (3) soup metering proportion bucket or pond, perhaps the raw material soaking pond or the bucket, (4) spraying pot, the pond, bucket, the storehouse, (5) coarse slurry pump, (6) press master or hydraulic pressure calender, (7) black liquor pond, (8) black liquor pump, (9) surplus black liquor, add the surplus alkali of living fiber absorbs, (10) surplus black liquor adds soup, generates alkali, needs to stir, (11) sedimentation basin, (12) clean solution tank.
2, the technological process method of environment-friendly complete solution-circulating slurrying according to claim 1 is characterized in that: the waste water in the slurrying flow process, the whole recycles of black liquor.
3, the technological process method of environment-friendly complete solution-circulating slurrying according to claim 1 is characterized in that: adopt the part technological process also can carry out processing and utilizing to other waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031369 CN1837459A (en) | 2005-03-24 | 2005-03-24 | Environment-friendly complete solution-circulating pulping process flow and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031369 CN1837459A (en) | 2005-03-24 | 2005-03-24 | Environment-friendly complete solution-circulating pulping process flow and method |
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| Publication Number | Publication Date |
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| CN1837459A true CN1837459A (en) | 2006-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510031369 Pending CN1837459A (en) | 2005-03-24 | 2005-03-24 | Environment-friendly complete solution-circulating pulping process flow and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797177A (en) * | 2018-06-15 | 2018-11-13 | 三明市缘福生物质科技有限公司 | A kind of broken bamboo applied to bamboo pulp preparation stews equipment |
-
2005
- 2005-03-24 CN CN 200510031369 patent/CN1837459A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797177A (en) * | 2018-06-15 | 2018-11-13 | 三明市缘福生物质科技有限公司 | A kind of broken bamboo applied to bamboo pulp preparation stews equipment |
| CN108797177B (en) * | 2018-06-15 | 2023-10-17 | 三明市缘福生物质科技有限公司 | Broken bamboo stewing equipment applied to bamboo pulp preparation |
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