CN104611973A - Processing method of refined cotton black liquor - Google Patents
Processing method of refined cotton black liquor Download PDFInfo
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- CN104611973A CN104611973A CN201310536776.0A CN201310536776A CN104611973A CN 104611973 A CN104611973 A CN 104611973A CN 201310536776 A CN201310536776 A CN 201310536776A CN 104611973 A CN104611973 A CN 104611973A
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- Prior art keywords
- black liquor
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- squeezing
- black
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- 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
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Abstract
The invention discloses a processing method of refined cotton black liquor. According to the processing method, a step of a conventional processing method, wherein clear water is delivered into a spherical boiler pond, and beating is carried out using a stock pump until black wash squeezing is carried out, is changed; the black liquor is delivered into a black liquor squeezing device using a spiral conveyer; first stage squeezing black liquor high in alkali content is recycled; second stage squeezing black liquor, and third stage squeezing black liquor are discharged into a sewage treatment station; concentrated black liquor raffinate is subjected to steam tail gas processing, and then is discharged into the sewage treatment station. Advantages of the processing method are that: recovery of concentrated black liquor high in alkali content can be realized, sewage chromaticity is reduced, sewage discharge quantity is reduced, and sewage processing cost is reduced.
Description
Technical field
The present invention relates to a kind of purified cotton process for treating waste liquor, specifically a kind of purified cotton black liquor treatment technology, belongs to process for treating waste liquor field.
Background technology
Purified cotton (Refined cotton) take cotton linter as raw material, through alkaline cooking, rinsing refine a kind of evenly loose, without the White Flocculus of the impurity such as wood chip, bamboo bits, silt, greasy dirt, metal object.Its main chemical compositions is cellulose, lignin and hemicellulose.It is made up of carbon, hydrogen, oxygen 3 kinds of elements, the mass ratio of its composition: carbon 44.4%%, hydrogen 6.17%, oxygen 49.39%, its density is generally L50-L56g/cm, specific heat capacity L3O-L40kJ/(kg DEG C), dissolve in copper ammon solution, there is good hydrophily and good adsorptivity.Through the purified cotton that subtraction boiling and rinsing are refined, there is lower impurity content, higher bloating tendency and respond, the good degree of polymerization and whiteness.Later ether (ester) change can be scheduled to last and carry out basis.
The ether product of purified cotton is mainly for the production of the thickener in the field such as stuffing, building coating, oil, papermaking of food, medicine, toothpaste.Purified cotton is as raw material, the vast good reputation have " industrial monosodium glutamate " of purposes of ether, esters product.
At present, pond water filling making beating under ball is generally adopted to black wash squeezing, to squeeze the production method of black liquor and washing black liquid dual disposal, the shortcomings such as there is quantity of alkali consumption large, sewage generation is many, and colourity is dark, and processing cost is high in domestic refined cotton production.
Summary of the invention
In order to solve the problem, the present invention devises a kind of purified cotton black liquor treatment technology, pull an oar to the technique of black wash squeezing with stock pump again by after pond injected clear water under ball, change into and be delivered to black wash press apparatus through auger, by high for alkalinity one section of squeezing black liquor recovery recycling, two sections, three sections squeezing black liquor drain into Sewage Disposal, concentrated black liquid raffinate is disposed to Sewage Disposal again after steam tail gas process, the black liquor recycling that alkalinity is high can be reclaimed, decrease quantity of wastewater effluent, reduce processing cost.
Technical scheme of the present invention is:
A kind of purified cotton black liquor treatment technology, first black liquor is delivered to black wash press apparatus through auger, blackly press apparatus is provided with successively the equipment of shakeouing, one section of press apparatus, one section of sprinkling equipment, two sections of press apparatus, two sections of sprinkling equipments, three sections of press apparatus, three sections of sprinkling equipments, again by high for alkalinity one section of squeezing black liquor recovery recycling, two sections, three sections squeezing black liquor drain into Sewage Disposal, and concentrated black liquid raffinate is disposed to Sewage Disposal again after steam tail gas process;
Wherein, the black wash squeezing section produced purified cotton does not need water filling to pull an oar, and direct solid-state wet feed conveying, after segment processing, the black liquor recovery that alkalinity is high recycles after joining alkali, and impure high black liquor utilizes steam tail gas to carry out evaporation preliminary treatment.
Specifically comprise the following steps:
(1) black liquor in rotary spherical digester is depressed into accumulator tank by double-edged fine-toothed comb in ball to reclaim;
(2) material in step (1) rotary spherical digester is delivered to black wash press apparatus through auger, carries out successively shakeouing, one section of squeezing, one section of spray, two sections of squeezings, two sections of sprays, three sections of press apparatus, three sections of sprays;
(3) step (2) sections squeezing black liquor is delivered to accumulator tank to reclaim;
(4) black liquor after step (3) being reclaimed is delivered to join after alkali groove joins alkali and recycles;
(5) the impure high black liquor raffinate after step (3) repeatedly recycling is delivered to evaporator tank, the tail steam of the steam drying workshop section in utilizing purified cotton to produce evaporates the liquid in evaporator tank;
(6) black liquor raffinate step (5) obtained is by filter press, and collect solid waste, solid portion burning disposal, liquid part is delivered to Sewage Disposal process.
The invention has the advantages that: by concentrated black liquid recycling high for alkali content, Colority of Sewage Water can be reduced, decrease quantity of wastewater effluent, reduce cost of sewage disposal.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Except as otherwise noted, the percentage adopted in the present invention is percetage by weight.
Embodiment 1
A kind of purified cotton black liquor treatment technology, first black liquor is delivered to black wash press apparatus through auger, blackly press apparatus is provided with successively the equipment of shakeouing, one section of press apparatus, one section of sprinkling equipment, two sections of press apparatus, two sections of sprinkling equipments, three sections of press apparatus, three sections of sprinkling equipments, again by high for alkalinity one section of squeezing black liquor recovery recycling, two sections, three sections squeezing black liquor drain into Sewage Disposal, and concentrated black liquid raffinate is disposed to Sewage Disposal again after steam tail gas process;
Wherein, the black wash squeezing section produced purified cotton does not need water filling to pull an oar, and direct solid-state wet feed conveying, after segment processing, the black liquor recovery that alkalinity is high recycles after joining alkali, and impure high black liquor utilizes steam tail gas to carry out evaporation preliminary treatment.
Specifically comprise the following steps:
(1) black liquor in rotary spherical digester is depressed into accumulator tank by double-edged fine-toothed comb in ball to reclaim;
(2) material in step (1) rotary spherical digester is delivered to black wash press apparatus through auger, carries out successively shakeouing, one section of squeezing, one section of spray, two sections of squeezings, two sections of sprays, three sections of press apparatus, three sections of sprays;
(3) step (2) sections squeezing black liquor is delivered to accumulator tank to reclaim;
(4) black liquor after step (3) being reclaimed is delivered to join after alkali groove joins alkali and recycles;
(5) the impure high black liquor raffinate after step (3) repeatedly recycling is delivered to evaporator tank, the tail steam of the steam drying workshop section in utilizing purified cotton to produce evaporates the liquid in evaporator tank;
(6) black liquor raffinate step (5) obtained is by filter press, and collect solid waste, solid portion burning disposal, liquid part is delivered to Sewage Disposal process.
In each embodiment of the present invention, raw materials is material used in the production of this area, all can obtain from market, and can not have an impact for production result; The instrument and equipment used in each operation, all adopts conventional equipment used in current production, there is no special feature.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a purified cotton black liquor treatment technology, it is characterized in that: first black liquor is delivered to black wash press apparatus through auger, blackly press apparatus is provided with successively the equipment of shakeouing, one section of press apparatus, one section of sprinkling equipment, two sections of press apparatus, two sections of sprinkling equipments, three sections of press apparatus, three sections of sprinkling equipments, again by high for alkalinity one section of squeezing black liquor recovery recycling, two sections, three sections squeezing black liquor drain into Sewage Disposal, and concentrated black liquid raffinate is disposed to Sewage Disposal again after steam tail gas process;
Wherein, in the direct solid-state wet feed conveying of black wash squeezing section that purified cotton produces, after segment processing, the black liquor recovery that alkalinity is high recycles after joining alkali, and impure high black liquor utilizes steam tail gas to carry out evaporation preliminary treatment.
2. black liquor treatment technology according to claim 1, is characterized in that, specifically comprises the following steps:
(1) black liquor in rotary spherical digester is depressed into accumulator tank by double-edged fine-toothed comb in ball to reclaim;
(2) material in step (1) rotary spherical digester is delivered to black wash press apparatus through auger, carries out successively shakeouing, one section of squeezing, one section of spray, two sections of squeezings, two sections of sprays, three sections of press apparatus, three sections of sprays;
(3) step (2) sections squeezing black liquor is delivered to accumulator tank to reclaim;
(4) black liquor after step (3) being reclaimed is delivered to join after alkali groove joins alkali and recycles;
(5) the impure high black liquor raffinate after step (3) repeatedly recycling is delivered to evaporator tank, the tail steam of the steam drying workshop section in utilizing purified cotton to produce evaporates the liquid in evaporator tank;
(6) black liquor raffinate step (5) obtained is by filter press, and collect solid waste, solid portion burning disposal, liquid part is delivered to Sewage Disposal process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536776.0A CN104611973A (en) | 2013-11-04 | 2013-11-04 | Processing method of refined cotton black liquor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310536776.0A CN104611973A (en) | 2013-11-04 | 2013-11-04 | Processing method of refined cotton black liquor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104611973A true CN104611973A (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310536776.0A Pending CN104611973A (en) | 2013-11-04 | 2013-11-04 | Processing method of refined cotton black liquor |
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| Country | Link |
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| CN (1) | CN104611973A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484085A (en) * | 2015-09-23 | 2016-04-13 | 四川北方硝化棉股份有限公司 | Two-segment continuous squeezing washing method for refined cotton |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458335A (en) * | 2003-05-26 | 2003-11-26 | 梁植林 | Water treating method in pulping industry |
| EP1753908A1 (en) * | 2004-06-02 | 2007-02-21 | Lenzing Aktiengesellschaft | Method for producing a chemical conversion pulp |
| CN101381968A (en) * | 2008-10-08 | 2009-03-11 | 北京捷水科技有限责任公司 | Method for enhancing extraction rate of black liquor |
| CN202895734U (en) * | 2012-12-04 | 2013-04-24 | 新疆光大山河化工科技有限公司 | Squeezing device for producing purified cotton |
| CN103205909A (en) * | 2013-04-17 | 2013-07-17 | 潍坊恒联浆纸有限公司 | Extraction technology of cotton pulp black liquor |
-
2013
- 2013-11-04 CN CN201310536776.0A patent/CN104611973A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458335A (en) * | 2003-05-26 | 2003-11-26 | 梁植林 | Water treating method in pulping industry |
| EP1753908A1 (en) * | 2004-06-02 | 2007-02-21 | Lenzing Aktiengesellschaft | Method for producing a chemical conversion pulp |
| CN101381968A (en) * | 2008-10-08 | 2009-03-11 | 北京捷水科技有限责任公司 | Method for enhancing extraction rate of black liquor |
| CN202895734U (en) * | 2012-12-04 | 2013-04-24 | 新疆光大山河化工科技有限公司 | Squeezing device for producing purified cotton |
| CN103205909A (en) * | 2013-04-17 | 2013-07-17 | 潍坊恒联浆纸有限公司 | Extraction technology of cotton pulp black liquor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484085A (en) * | 2015-09-23 | 2016-04-13 | 四川北方硝化棉股份有限公司 | Two-segment continuous squeezing washing method for refined cotton |
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Application publication date: 20150513 |
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