CN110755919A - System and method for producing precipitated calcium carbonate by using paper machine clear water - Google Patents
System and method for producing precipitated calcium carbonate by using paper machine clear water Download PDFInfo
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- CN110755919A CN110755919A CN201911220064.1A CN201911220064A CN110755919A CN 110755919 A CN110755919 A CN 110755919A CN 201911220064 A CN201911220064 A CN 201911220064A CN 110755919 A CN110755919 A CN 110755919A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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Abstract
The invention relates to a system and a method for producing precipitated calcium carbonate by using paper machine white water. The system comprises a plain water pipeline, a screen filter, a centrifugal pump and a bag filter, wherein the plain water pipeline is used for conveying paper machine plain water to a digestion section, a synthesis section, a flue gas washing section and a pipeline washing section for producing precipitated calcium carbonate, the screen filter, the centrifugal pump and the bag filter are sequentially arranged on the plain water pipeline from upstream to downstream along the conveying direction of the paper machine plain water, the screen filter is used for protecting the centrifugal pump, the centrifugal pump is used for pumping the paper machine plain water, and the bag filter is used for filtering impurities in the paper machine plain water. The invention can achieve the following beneficial technical effects: can reduce the consumption of clear water required by the production of precipitated calcium carbonate.
Description
Technical Field
The invention relates to a system and a method for producing precipitated calcium carbonate by using paper machine white water.
Background
Paper machine systems require large amounts of water to perform paper making operations such as pulp dispersing. Paper machine process waters can be divided into three major categories, depending on the source of the water: clear water, white water and clear water. The fresh water used in paper machine production is, for example, fresh water from natural fresh water, which is subjected to preliminary silt removal and pumped to the fresh water tower of the paper machine for use. Both the white water and the clear water are paper machine circulating water. White water is water dewatered from the wire section in the paper machine production process, passes through the bow screen to the white water tank to form white water, and is pumped to the white water tower of the paper machine for use. The clear water is taken from the fiber and filler recovery system of the paper machine and is pumped to a clear water tower of the paper machine for use.
The Precipitated Calcium Carbonate (PCC) is mainly used for filling paper, improves the ash content of the finished paper, improves the performance of the paper and meets the requirements of subsequent printing and processing. In the prior art, a large amount of clear water (for example, 2000-4000 tons per day, depending on the yield of precipitated calcium carbonate) is required in the production process of precipitated calcium carbonate, and the production process comprises flue gas washing, pipeline flushing, a digestion section and the like.
Accordingly, there is a need for a system and method for producing precipitated calcium carbonate using paper machine white water that reduces the amount of white water used to produce precipitated calcium carbonate.
Disclosure of Invention
An object of the present invention is to provide a system for producing precipitated calcium carbonate using paper machine plain water, which can solve the problems of the prior art and reduce the amount of the plain water used for producing the precipitated calcium carbonate.
The above object of the present invention is achieved by a system for producing precipitated calcium carbonate from paper machine white water, comprising a white water line for conveying paper machine white water to a digestion section, a synthesis section, a flue gas washing section and a line flushing section for producing precipitated calcium carbonate, a screen filter, a centrifugal pump and a bag filter, the screen filter, the centrifugal pump and the bag filter being arranged on the white water line in the order of conveying the paper machine white water from upstream to downstream, the screen filter being used for protecting the centrifugal pump, the centrifugal pump being used for pumping the paper machine white water, the bag filter being used for filtering impurities in the paper machine white water.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can reduce the consumption of clear water required by the production of precipitated calcium carbonate.
Preferably, the system for producing precipitated calcium carbonate from paper machine white water further comprises an antifoam introduction line for introducing antifoam into the white water line before the screen filter.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can effectively eliminate air bubbles in the clear water pipeline, so that the clear water of the paper machine can better replace clear water required for producing precipitated calcium carbonate.
Preferably, the system for producing precipitated calcium carbonate from paper machine clear water further comprises a flow meter for measuring the flow of paper machine clear water after the bag filter.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the flow rate of the white water in the white water pipeline can be effectively monitored, so that the white water of the paper machine can better replace the clear water required for producing the precipitated calcium carbonate.
Preferably, the pipeline flushing section comprises a vibrating screen flushing sub-section, a screw conveyor flushing sub-section and a product conveying pump flushing sub-section.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the filtered paper machine clear water can be effectively utilized and conveyed to a sub-section needing to be washed.
Preferably, the mesh filter is a metal mesh filter.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the white water of the paper machine can be better preliminarily filtered, and the centrifugal pump is protected.
The above object of the present invention is also achieved by a method for producing precipitated calcium carbonate using paper machine white water, comprising conveying paper machine white water to a digestion section, a synthesis section, a flue gas washing section and a line flushing section for producing precipitated calcium carbonate using a white water line, wherein a screen filter, a centrifugal pump and a bag filter are disposed on the white water line in this order from upstream to downstream in a conveying direction of the paper machine white water, the screen filter is used for protecting the centrifugal pump, the centrifugal pump is used for pumping the paper machine white water, and the bag filter is used for filtering impurities in the paper machine white water.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can reduce the consumption of clear water required by the production of precipitated calcium carbonate.
Preferably, the method for producing precipitated calcium carbonate using paper machine white water further comprises: an anti-foaming agent is introduced into the plain water line before the screen filter.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can effectively eliminate air bubbles in the clear water pipeline, so that the clear water of the paper machine can better replace clear water required for producing precipitated calcium carbonate.
Preferably, the method for producing precipitated calcium carbonate using paper machine white water further comprises: the flow of paper machine clear water was measured after the bag filter.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the flow rate of the white water in the white water pipeline can be effectively monitored, so that the white water of the paper machine can better replace the clear water required for producing the precipitated calcium carbonate.
Preferably, the pipeline flushing section comprises a vibrating screen flushing sub-section, a screw conveyor flushing sub-section and a product conveying pump flushing sub-section.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the filtered paper machine clear water can be effectively utilized and conveyed to a sub-section needing to be washed.
Preferably, the mesh filter is a metal mesh filter.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the white water of the paper machine can be better preliminarily filtered, and the centrifugal pump is protected.
Drawings
Fig. 1 is a schematic composition diagram of a system for producing precipitated calcium carbonate using paper machine white water according to an embodiment of the present invention.
List of reference numerals
101: plain boiled water pipeline
102: net type filter
103: centrifugal pump
104: bag filter
105: defoaming agent introducing pipeline
106: flow meter
201: digestion section
202: synthesis section
203: flue gas washing section
204: pipeline flushing section
A: conveying direction of clear white water of paper machine
Detailed Description
While specific embodiments of the invention will be described below, it should be noted that in the course of the detailed description of these embodiments, in order to provide a concise and concise description, all features of an actual implementation may not be described in detail. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions are made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another. Moreover, it should be further appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, and thus should not be construed as a complete understanding of this disclosure.
Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "a" or "an," and the like, do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, nor are they restricted to direct or indirect connections.
Fig. 1 is a schematic composition diagram of a system for producing precipitated calcium carbonate using paper machine white water according to an embodiment of the present invention.
As shown in fig. 1, a system for producing precipitated calcium carbonate using paper machine white water according to an embodiment of the present invention includes a white water line 101, a screen filter 102, a centrifugal pump 103, and a bag filter 104, wherein the white water line 101 is used to convey the paper machine white water to a digestion section 201, a synthesis section 202, a flue gas washing section 203, and a line flushing section 204 for producing precipitated calcium carbonate, the screen filter 102, the centrifugal pump 103, and the bag filter 104 are disposed on the white water line 101 in this order from upstream to downstream along a conveying direction a of the paper machine white water, the screen filter 102 is used to protect the centrifugal pump 103, the centrifugal pump 103 is used to pump the paper machine white water, and the bag filter 104 is used to filter impurities in the paper machine white water.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can reduce the consumption of clear water required by the production of precipitated calcium carbonate.
In particular, the inventors have found that the paper machine has about 1500m per day3The clear water of (2) needs to be discharged to waste water for treatment. The part of clear water is subjected to air floatation treatment, and the total suspended particles are less than 40ppm, so that the method has recycling value. Therefore, the inventor designs the system for producing precipitated calcium carbonate by using the paper machine clear water, the system can replace the clear water for producing the precipitated calcium carbonate by using the treated clear water through two-stage filtration (a mesh filter 102 and a bag filter 104) and centrifugal pumping (a centrifugal pump 103), and the paper machine clear water is connected to the production flow of the precipitated calcium carbonate through a clear water pipeline 101 and is used for a digestion section 201, a synthesis section 202, a flue gas washing section 203 and a pipeline washing section 204, so that the use amount of the clear water required for producing the precipitated calcium carbonate can be reduced, and the purposes of energy conservation and emission reduction are achieved.
For example, in the case that the amount of fresh water used in the production process of precipitated calcium carbonate is 2000-4000 tons per day (depending on the yield of precipitated calcium carbonate), the fresh water can be replaced by the treated fresh water for the production of precipitated calcium carbonate, which greatly reduces the amount of fresh water required for the production of precipitated calcium carbonate, for example, the amount of fresh water is only 200 tons per day, and the rest can be replaced by the treated fresh water.
Preferably, the water used in the digestion section 201 mainly includes digestion reaction water, aspirator spray water, mixer shaft seal water, sand-containing impurity screw conveyor flush water, and the like.
The digestion reaction is as follows: the quicklime reacts with water to produce slaked lime.
CaO+H2O＝Ca(OH)2
Preferably, the water used in the synthesis section 202 mainly includes water for synthesis reaction, water for rinsing a synthesized product transfer pump, and the like.
The synthesis reaction is as follows: the slaked lime is reacted with carbon dioxide to produce calcium carbonate.
Ca(OH)2+CO2＝CaCO3
Preferably, the flue gas washing performed in the flue gas washing section 203 means: the method comprises the steps of purifying and dedusting the tail gas containing carbon dioxide from a power plant to obtain clean carbon dioxide for synthesis reaction.
Preferably, as shown in fig. 1, the system for producing precipitated calcium carbonate from paper machine white water according to an embodiment of the invention further comprises an antifoaming agent introduction line 105, the antifoaming agent introduction line 105 being used for introducing an antifoaming agent into the white water line 101 before the screen filter 102.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can effectively eliminate air bubbles in the clear water pipeline, so that the clear water of the paper machine can better replace clear water required for producing precipitated calcium carbonate.
Preferably, the defoaming agent is an ether defoaming agent. Of course, it will be understood by those skilled in the art based on the present disclosure that ether-based defoaming agents are a preferred form of defoaming agent used in the present invention, and the defoaming agent is not limited to ether-based defoaming agents, and other types of defoaming agents (e.g., non-silicon-based defoaming agents, silicone-based defoaming agents, etc.) can be used as long as the defoaming requirement is satisfied without departing from the scope of the present invention. Compared with other types of defoaming agents, the ether defoaming agent has better defoaming effect, thereby better meeting the quality requirement of precipitated calcium carbonate.
Preferably, as shown in fig. 1, the system for producing precipitated calcium carbonate from paper machine clean water according to an embodiment of the present invention further comprises a flow meter 106, the flow meter 106 being used for measuring the flow rate of the paper machine clean water after the bag filter 104.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the flow rate of the white water in the white water pipeline can be effectively monitored, so that the white water of the paper machine can better replace the clear water required for producing the precipitated calcium carbonate.
Preferably, the line wash section 204 includes a shaker wash sub-section, a screw conveyor wash sub-section, and a product transfer pump wash sub-section.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the filtered paper machine clear water can be effectively utilized and conveyed to a sub-section needing to be washed.
The vibrating screen is used for filtering product impurities after the synthesis reaction; the screw conveyer is used for screw conveying of sand-containing impurities in the digestion section; the product conveying pump is used for conveying the synthesized product (precipitated calcium carbonate) in the synthesis section.
Preferably, the mesh filter 102 is a metal mesh filter.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the white water of the paper machine can be better preliminarily filtered, and the centrifugal pump is protected.
Preferably, the mesh number of the mesh filter 102 is 40 mesh.
Preferably, the bag filter 104 is a nylon bag filter.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the paper machine clear water can be better filtered, and impurities in the paper machine clear water can be more effectively filtered.
Preferably, the bag filter 104 has a mesh size of 150.
Of course, those skilled in the art will appreciate, based on the present disclosure, that the mesh filter is not limited to a metal mesh filter, and that the bag filter is not limited to a nylon bag filter, and that other filter materials may be used, as long as the requirements for two-stage filtration are met, without departing from the scope of the present invention.
In addition, those skilled in the art will appreciate, based on the disclosure of the present invention, that the mesh filter is not limited to 40 mesh, and the bag filter is not limited to 150 mesh, and that other mesh filters can be used, as long as the requirement of two-stage filtration is met, without departing from the scope of the present invention.
Preferably, the bag filter 104 has a mesh size 3-5 times that of the mesh filter 102.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can better realize two-stage filtration, more effectively filter impurities in the paper machine clear water and protect the centrifugal pump.
Preferably, as shown in FIG. 1, centrifugal pump 103 is two centrifugal pumps in parallel.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: the paper machine clear water can be well pumped.
Of course, those skilled in the art will appreciate based on the present disclosure that the number of centrifugal pumps is not limited to two, and may be, for example, one, three, etc., without departing from the scope of the present invention.
Preferably, as shown in FIG. 1, the bag filters 104 are four bag filters in parallel.
According to the technical scheme, the system for producing precipitated calcium carbonate by using the paper machine clear water can achieve the following beneficial technical effects: can better filter the impurities in the paper machine clear water.
Of course, those skilled in the art will appreciate based on the disclosure of the present invention that the number of bag filters is not limited to four, and may be, for example, three, five, etc., without departing from the scope of the present invention.
The inventors also conducted comparative tests on the water quality of the paper machine clear water and the clear water after filtration and the characteristics of the produced precipitated calcium carbonate. The test results are shown in the following table.
As can be seen from the test results in the table above, the system of the invention can process (filter) the paper machine clear water into water with quality very close to that of the clear water, and can effectively replace the clear water required by the production of precipitated calcium carbonate; compared with the precipitated calcium carbonate produced by clear water, the precipitated calcium carbonate produced by the system has very similar characteristics, and can effectively meet the quality requirement of the precipitated calcium carbonate.
The method for producing precipitated calcium carbonate by using paper machine clear water according to one embodiment of the invention comprises the steps of conveying the paper machine clear water to a digestion section 201, a synthesis section 202, a flue gas washing section 203 and a pipeline washing section 204 for producing precipitated calcium carbonate by using the clear water pipeline 101, wherein a mesh filter 102, a centrifugal pump 103 and a bag filter 104 are sequentially arranged on the clear water pipeline 101 from upstream to downstream along the conveying direction A of the paper machine clear water, the mesh filter 102 is used for protecting the centrifugal pump 103, the centrifugal pump 103 is used for pumping the paper machine clear water, and the bag filter 104 is used for filtering impurities in the paper machine clear water.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can reduce the consumption of clear water required by the production of precipitated calcium carbonate.
Preferably, the method for producing precipitated calcium carbonate using paper machine white water according to an embodiment of the present invention further comprises: the anti-foaming agent is introduced into the plain water line 101 before the screen filter 102.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can effectively eliminate air bubbles in the clear water pipeline, so that the clear water of the paper machine can better replace clear water required for producing precipitated calcium carbonate.
Preferably, the method for producing precipitated calcium carbonate using paper machine white water according to an embodiment of the present invention further comprises: the flow of paper machine white water was measured after the bag filter 104.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the flow rate of the white water in the white water pipeline can be effectively monitored, so that the white water of the paper machine can better replace the clear water required for producing the precipitated calcium carbonate.
Preferably, the line wash section 204 includes a shaker wash sub-section, a screw conveyor wash sub-section, and a product transfer pump wash sub-section.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the filtered paper machine clear water can be effectively utilized and conveyed to a sub-section needing to be washed.
Preferably, the mesh filter 102 is a metal mesh filter.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the white water of the paper machine can be better preliminarily filtered, and the centrifugal pump is protected.
Preferably, the mesh number of the mesh filter 102 is 40 mesh.
Preferably, the bag filter 104 is a nylon bag filter.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the paper machine clear water can be better filtered, and impurities in the paper machine clear water can be more effectively filtered.
Preferably, the bag filter 104 has a mesh size of 150.
Of course, those skilled in the art will appreciate, based on the present disclosure, that the mesh filter is not limited to a metal mesh filter, and that the bag filter is not limited to a nylon bag filter, and that other filter materials may be used, as long as the requirements for two-stage filtration are met, without departing from the scope of the present invention.
In addition, those skilled in the art will appreciate, based on the disclosure of the present invention, that the mesh filter is not limited to 40 mesh, and the bag filter is not limited to 150 mesh, and that other mesh filters can be used, as long as the requirement of two-stage filtration is met, without departing from the scope of the present invention.
Preferably, the bag filter 104 has a mesh size 3-5 times that of the mesh filter 102.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can better realize two-stage filtration, more effectively filter impurities in the paper machine clear water and protect the centrifugal pump.
Preferably, as shown in FIG. 1, centrifugal pump 103 is two centrifugal pumps in parallel.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: the paper machine clear water can be well pumped.
Of course, those skilled in the art will appreciate based on the present disclosure that the number of centrifugal pumps is not limited to two, and may be, for example, one, three, etc., without departing from the scope of the present invention.
Preferably, as shown in FIG. 1, the bag filters 104 are four bag filters in parallel.
According to the technical scheme, the method for producing precipitated calcium carbonate by using the paper machine clear water has the following beneficial technical effects: can better filter the impurities in the paper machine clear water.
Of course, those skilled in the art will appreciate based on the disclosure of the present invention that the number of bag filters is not limited to four, and may be, for example, three, five, etc., without departing from the scope of the present invention.
While particular embodiments of the present invention have been described above, it will be understood by those skilled in the art that they are not intended to limit the invention, and that various modifications may be made by those skilled in the art based on the above disclosure without departing from the scope of the invention.
Claims (10)
1. A system for producing precipitated calcium carbonate from paper machine white water, characterized in that the system comprises a white water pipeline, a screen filter, a centrifugal pump and a bag filter, wherein the white water pipeline is used for conveying the paper machine white water to a digestion section, a synthesis section, a flue gas washing section and a pipeline flushing section for producing the precipitated calcium carbonate, the screen filter, the centrifugal pump and the bag filter are sequentially arranged on the white water pipeline from upstream to downstream along the conveying direction of the paper machine white water, the screen filter is used for protecting the centrifugal pump, the centrifugal pump is used for pumping the paper machine white water, and the bag filter is used for filtering impurities in the paper machine white water.
2. The system for producing precipitated calcium carbonate from paper machine white water according to claim 1, characterized in that the system further comprises a defoamer introduction line for introducing defoamer into the white water line before the screen filter.
3. The system for producing precipitated calcium carbonate from paper machine white water according to claim 1, characterized in that the system further comprises a flow meter for measuring the flow of paper machine white water after the bag filter.
4. The system for producing precipitated calcium carbonate with paper machine white water according to claim 1, characterized in that said pipeline wash section comprises a vibrating screen wash sub-section, a screw conveyor wash sub-section, and a product transfer pump wash sub-section.
5. The system for producing precipitated calcium carbonate with paper machine white water according to claim 1, characterized in that the screen filter is a metal mesh filter.
6. A method for producing precipitated calcium carbonate from paper machine white water, characterized in that the method comprises conveying the paper machine white water to a digestion section, a synthesis section, a flue gas washing section and a pipeline flushing section for producing precipitated calcium carbonate by means of a white water pipeline, wherein a screen filter, a centrifugal pump and a bag filter are arranged on the white water pipeline in the conveying direction of the paper machine white water in sequence from upstream to downstream, the screen filter is used for protecting the centrifugal pump, the centrifugal pump is used for pumping the paper machine white water, and the bag filter is used for filtering impurities in the paper machine white water.
7. The method for producing precipitated calcium carbonate with paper machine white water according to claim 6, characterized in that the method further comprises: an anti-foaming agent is introduced into the plain water line before the screen filter.
8. The method for producing precipitated calcium carbonate with paper machine white water according to claim 6, characterized in that the method further comprises: the flow of paper machine clear water was measured after the bag filter.
9. The method for producing precipitated calcium carbonate using paper machine white water according to claim 6, characterized in that the line wash section comprises a vibrating screen wash sub-section, a screw conveyor wash sub-section, and a product transfer pump wash sub-section.
10. The method for producing precipitated calcium carbonate using paper machine white water according to claim 6, characterized in that the screen filter is a metal mesh filter.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005248349A (en) * | 2004-03-02 | 2005-09-15 | Somar Corp | Paper machine and defoamer addition system |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-water |
| CN102964030A (en) * | 2012-11-16 | 2013-03-13 | 富阳春江污水回用处理有限公司 | Novel waste paper papermaking waste water comprehensive treatment method and system |
| CN103172196A (en) * | 2013-02-27 | 2013-06-26 | 广东省金叶烟草薄片技术开发有限公司 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
| CN203513392U (en) * | 2013-09-23 | 2014-04-02 | 浙江凯丰纸业有限公司 | Circular treatment device of papermaking white water |
| CN104787931A (en) * | 2015-04-24 | 2015-07-22 | 山东恒安纸业有限公司 | Deep treatment system and process for paper-making wastewater |
| CN204897454U (en) * | 2015-08-11 | 2015-12-23 | 怀宁县天元纸业有限公司 | Be used for papermaking plain boiled water recovery system |
| CN107513879A (en) * | 2017-10-23 | 2017-12-26 | 南京林业大学 | A kind of recycling reuse method of mthod of white water from paper making anionic trash |
| CN208356282U (en) * | 2018-04-20 | 2019-01-11 | 广东理文卫生用纸有限公司 | A kind of toilet paper paper pulp sand-removing and slurry dewatering system |
| CN109574276A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of wastewater treatment method |
| CN109574314A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of water treatment system of papermaking green end |
| CN211706130U (en) * | 2019-12-03 | 2020-10-20 | 芬欧汇川(中国)有限公司 | System for producing precipitated calcium carbonate by using paper machine white water |
-
2019
- 2019-12-03 CN CN201911220064.1A patent/CN110755919A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005248349A (en) * | 2004-03-02 | 2005-09-15 | Somar Corp | Paper machine and defoamer addition system |
| CN1919753A (en) * | 2006-09-08 | 2007-02-28 | 臧立新 | Treatment reuse technique for paper-making white-water |
| CN102964030A (en) * | 2012-11-16 | 2013-03-13 | 富阳春江污水回用处理有限公司 | Novel waste paper papermaking waste water comprehensive treatment method and system |
| CN103172196A (en) * | 2013-02-27 | 2013-06-26 | 广东省金叶烟草薄片技术开发有限公司 | Treatment and recycling technology of white water in production of paper-making reconstituted tobacco |
| CN203513392U (en) * | 2013-09-23 | 2014-04-02 | 浙江凯丰纸业有限公司 | Circular treatment device of papermaking white water |
| CN104787931A (en) * | 2015-04-24 | 2015-07-22 | 山东恒安纸业有限公司 | Deep treatment system and process for paper-making wastewater |
| CN204897454U (en) * | 2015-08-11 | 2015-12-23 | 怀宁县天元纸业有限公司 | Be used for papermaking plain boiled water recovery system |
| CN107513879A (en) * | 2017-10-23 | 2017-12-26 | 南京林业大学 | A kind of recycling reuse method of mthod of white water from paper making anionic trash |
| CN208356282U (en) * | 2018-04-20 | 2019-01-11 | 广东理文卫生用纸有限公司 | A kind of toilet paper paper pulp sand-removing and slurry dewatering system |
| CN109574276A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of wastewater treatment method |
| CN109574314A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of water treatment system of papermaking green end |
| CN211706130U (en) * | 2019-12-03 | 2020-10-20 | 芬欧汇川(中国)有限公司 | System for producing precipitated calcium carbonate by using paper machine white water |
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